DE4237072C1 - Resistive film pressure or force sensor for indicating occupation of vehicle seat - has conductive paths for providing series of meandering interdigitated local area transducer electrodes on polymer and semiconductor substrate. - Google Patents

Resistive film pressure or force sensor for indicating occupation of vehicle seat - has conductive paths for providing series of meandering interdigitated local area transducer electrodes on polymer and semiconductor substrate.

Info

Publication number
DE4237072C1
DE4237072C1 DE19924237072 DE4237072A DE4237072C1 DE 4237072 C1 DE4237072 C1 DE 4237072C1 DE 19924237072 DE19924237072 DE 19924237072 DE 4237072 A DE4237072 A DE 4237072A DE 4237072 C1 DE4237072 C1 DE 4237072C1
Authority
DE
Germany
Prior art keywords
sensor
electrodes
film pressure
seat
resistive film
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE19924237072
Other languages
German (de)
Inventor
Reinhold Dipl Ing Mickeler
Volker Dipl Ing Petri
Guido Dipl Ing Wetzel
Bogdan Dipl Ing Serban
Michel Dipl Ing Witte
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mercedes Benz Group AG
Interlink Electronics Europe SA
Original Assignee
Daimler Benz AG
Mercedes Benz AG
Interlink Electronics Europe SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daimler Benz AG, Mercedes Benz AG, Interlink Electronics Europe SA filed Critical Daimler Benz AG
Priority to DE19924237072 priority Critical patent/DE4237072C1/en
Application granted granted Critical
Publication of DE4237072C1 publication Critical patent/DE4237072C1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/78—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by the contacts or the contact sites
    • H01H13/785—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by the contacts or the contact sites characterised by the material of the contacts, e.g. conductive polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/002—Seats provided with an occupancy detection means mounted therein or thereon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/015—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
    • B60R21/01512—Passenger detection systems
    • B60R21/01516—Passenger detection systems using force or pressure sensing means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
    • G01L1/205—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using distributed sensing elements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/22—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers
    • G01L5/226—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers to manipulators, e.g. the force due to gripping
    • G01L5/228—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers to manipulators, e.g. the force due to gripping using tactile array force sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R2021/01122—Prevention of malfunction
    • B60R2021/01129—Problems or faults
    • B60R2021/01136—Cut lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R2021/01122—Prevention of malfunction
    • B60R2021/01129—Problems or faults
    • B60R2021/01143—Short circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2201/00—Contacts
    • H01H2201/022—Material
    • H01H2201/032—Conductive polymer; Rubber
    • H01H2201/036—Variable resistance
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2239/00—Miscellaneous
    • H01H2239/002—Conductive track to monitor integrity
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/14—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for operation by a part of the human body other than the hand, e.g. by foot
    • H01H3/141—Cushion or mat switches

Abstract

The pressure sensor exhibits an electrical characteristic which decreases when the applied normal force increases. It comprises two laminated polymer layers respectively incorporating a semiconductor material and two conductor paths providing a pair of interdigitated meander-formed electrodes and associated electrical leads. Pref. a number of pressure sensor elements (1.1-1.4) are connected in series, so that the pressure sensitive resistances provided between their interdigitated electrodes are connected in parallel. ADVANTAGE - Allows self-testing using resistance measurement to detect short-circuit or conductor path breakage points in vehicle having air bag actuators.

Description

Die Erfindung bezieht sich auf einen resistiven Foliendruck­ sensor gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a resistive film printing Sensor according to the preamble of claim 1.

Es ist bereits ein gattungsgemäßer druckempfindlicher Wider­ stand in Form eines Foliendrucksensors bekannt, der serienmäßig gefertigt und in verschiedenen Varianten in vielen Bereichen, insbesondere auch in der Automobilindustrie eingesetzt wird. Dieser Foliendrucksensor ist auch unter dem eingetragenen Warenzeichen FSR bekannt, was die Abkürzung für "Force Sensing Resistor" ist.It is already a generic pressure sensitive counter was known in the form of a film pressure sensor, which is standard manufactured and in different variants in many areas, is also used in particular in the automotive industry. This film pressure sensor is also under the registered Trademark FSR known for the abbreviation for "Force Sensing Resistor ".

Ein solcher Foliendrucksensor besteht aus zwei Polymerlagen, die zusammenlaminiert wurden, wobei die eine Lage mit einem Halbleitermaterial und die andere mit zwei interdigitierenden kammartigen Elektroden beschichtet ist. Die kammartige Struktur der Elektroden wird durch dünne Leiterbahnen realisiert, die als Stichleitungen von einem Hauptstrang abzweigen, der über eine Verbindungsleitung mit einem Anschlußpunkt verbunden ist. Wird der Foliendrucksensor mit Druck belastet, schaltet das Halbleitermaterial die Kontaktfinger der Elektroden mehr oder weniger parallel, worauf der elektrische Widerstand zwischen den Elektroden abnimmt. Zwischen den beiden Anschlußpunkten liegt damit ein Widerstand (FSR) an, der mit zunehmender Druck­ kraft abnimmt und abhängig davon in einem Bereich von ungefähr drei Zehnerpotenzen variiert. Such a film pressure sensor consists of two polymer layers, which were laminated together, the one layer with a Semiconductor material and the other with two interdigitating comb-like electrodes is coated. The comb-like structure the electrodes are realized by thin conductor tracks, which branch off as branch lines from a main line, which via a connecting line is connected to a connection point. If the film pressure sensor is loaded with pressure, it switches Semiconductor material the contact fingers of the electrodes more or less parallel, whereupon the electrical resistance between the electrodes decreases. Between the two connection points there is a resistance (FSR) which increases with increasing pressure force decreases and depending on it in a range of approximately three powers of ten varied.  

Ein ähnlicher druckabhängiger Analogwandler oder Schalter, welcher ebenfalls eine Halbleitergemisch-Schicht und kammartige Elektroden verwendet, ist auch aus der DE 30 44 384 A1 bekannt und wird dort in einer Anwendung auf elektronische Musikinstru­ mente beschrieben. Weiterhin ist aus der US 5 010 774 ein Drucksensor bekannt, der sich aus einer Vielzahl von Sensor­ elementen zusammensetzt und auch zur Sitzbelegungserkennung angewendet wird. Auch hier weisen die einzelnen Sensorelemente eine kammartige Elektrodenstruktur auf.A similar pressure-dependent analog converter or switch, which is also a semiconductor mixture layer and comb-like Electrodes used are also known from DE 30 44 384 A1 and is there in an application on electronic music instru ment described. Furthermore, from US 5 010 774 Pressure sensor known, which consists of a variety of sensor elements and also for seat occupancy detection is applied. The individual sensor elements also point here a comb-like electrode structure.

Für sicherheitskritische Anwendung, wie zum Beispiel der Air­ bagauslösung in Kraftfahrzeugen, müssen die beteiligten Sen­ soren regelmäßig auf ihre Funktion überprüft werden. Das geschieht automatisch, beispielsweise in einem Selbsttest nach jedem Einschalten des Bordnetzes des Fahrzeugs.For safety-critical applications such as the Air bag release in motor vehicles, the participating sen function are checked regularly. The  happens automatically, for example in a self-test each time the vehicle electrical system is switched on.

Bei den bisher bekannten Foliendrucksensoren ergeben sich Nachteile dahingehend, daß deren Funktionsfähigkeit nur unge­ nügend oder nur unter großem Aufwand überprüft werden kann. So kann zwar durch Messung des Widerstandes zwischen den beiden Anschlußkontakten des Foliendrucksensors ein Kurzschluß oder eine Unterbrechung in einer Verbindungsleitung leicht erkannt werden, eine Leitungsunterbrechung im Bereich der interdigi­ tierenden Elektroden beeinflußt aber lediglich die Drucksen­ sitivität und könnte nur unter großem Aufwand mit Kenntnis der eingeprägten äußeren Kraft aus einer Abweichung vom Kennli­ nienverhalten ermittelt werden. Andererseits kann eine Einbuße an Drucksensitivität bei sicherheitskritischen Anwendungen nicht toleriert werden.The film pressure sensors known to date result Disadvantages in that their functionality is only unsafe sufficient or can only be checked with great effort. So can be done by measuring the resistance between the two Connection contacts of the film pressure sensor a short circuit or an interruption in a connecting line is easily recognized become a line break in the field of interdigi However, electrodes only affect the pressure sensors sitivity and could only be done with great effort with knowledge of impressed external force from a deviation from the characteristic behavior can be determined. On the other hand, a loss pressure sensitivity in safety-critical applications not be tolerated.

Aufgabe der Erfindung ist es, einen gattungsgemäßen Folien­ drucksensor so auszubilden, daß eine einfache und zuverlässige Überprüfung der Leiterbahnen sowohl der Verbindungsleitungen als auch der kammartig ausgebildeten Elektroden ermöglicht wird.The object of the invention is a generic film design the pressure sensor so that it is simple and reliable Checking the conductor tracks and the connecting lines as well as the comb-like electrodes becomes.

Diese Aufgabe wird mit den kennzeichnenden Merkmalen des Pa­ tentanspruchs 1 gelöst.This task is carried out with the characteristic features of Pa claim 1 solved.

In vorteilhafter Weise gestattet der erfindungsgemäße Folien­ drucksensor, daß durch Widerstandsmessung zwischen zwei von den insgesamt vier Anschlußkontakten die Leiterbahnen auf ihrer gesamten Länge, wobei der Bereich der Elektroden eingeschlossen ist, auf eine Leitungsunterbrechung bzw. Kurzschluß hin über­ prüft werden können. Aufgrund der verzweigungsfreien Ausführung der Kammstruktur der Elektroden wird eine Unterbrechung an be­ liebiger Stelle bei einem Selbsttest erkannt. The film according to the invention advantageously allows pressure sensor that by measuring the resistance between two of the a total of four connecting contacts the conductor tracks on your entire length, including the area of the electrodes is due to an open circuit or short circuit can be checked. Because of the branch-free design the comb structure of the electrodes will be interrupted anywhere recognized in a self-test.  

Besondere vorteilhafte Aus- und Weiterbildungen sind durch die Merkmale der Unteransprüche gekennzeichnet.Particularly advantageous training and further education are through the Characteristics of the subclaims marked.

Mehrere Ausführungsbeispiele der Erfindung sind in der Zeich­ nung dargestellt und werden im folgenden näher beschrieben. Es zeigen:Several embodiments of the invention are in the drawing voltage and are described in more detail below. It demonstrate:

Fig. 1 ein erstes Ausführungsbeispiel eines erfindungsgemäßen Foliendrucksensors, Fig. 1 shows a first embodiment of a film-type pressure sensor according to the invention,

Fig. 2 ein zweites Ausführungsbeispiel eines erfindungsgemäßen Foliendrucksensors, Fig. 2 shows a second embodiment of a film-type pressure sensor according to the invention,

Fig. 3 eine Beschaltung des erfindungsgemäßen Foliendrucksensors zwecks einer vereinfachten Funktionsprüfung, Fig. 3 is a circuitry of the film pressure sensor according to the invention for the purpose of a simplified functional test,

Fig. 4a eine Ausführung eines erfindungsgemäßen Foliendruck­ sensors als Sensormatte für einen Fahrzeugsitz, FIG. 4a an embodiment of a film-type pressure sensor according to the invention as a sensor mat for a vehicle seat,

Fig. 4b einen Fahrzeugsitz. FIG. 4b shows a vehicle seat.

Die Darstellung der Foliendrucksensoren in den Fig. 1 bis 4a beschränkt sich auf die Leitungsführung der Leiterbahnen, unter Verzicht auf eine Wiedergabe der das Trägersubstrat bildenden Polymerlage und der Halbleiterschicht im Bereich der inter­ digitierenden Elektroden.The representation of the film pressure sensors in FIGS . 1 to 4a is limited to the routing of the conductor tracks, without the reproduction of the polymer layer forming the carrier substrate and the semiconductor layer in the region of the inter-digitizing electrodes.

In Fig. 1 ist ein erstes Ausführungsbeispiel eines erfindungs­ gemäßen Foliendrucksensor dargestellt, bestehend aus einem einzigen Sensorelement 1 mit vier Anschlußpunkten A, B, C, D. Von dem Anschlußpunkt A erstreckt sich eine durchgehende Lei­ terbahn 2 zum Anschlußpunkt C, ebenso eine Leiterbahn 3 von B nach D. Im drucksensitiven Bereich des Sensorelementes 1 nehmen die Leiterbahnen 2, 3 einen mäandrierenden Verlauf, wobei die so gebildeten kammartigen Strukturen der beiden Leiterbahnen 2, 3 ineinandergreifen, was den interdigitierenden Elektroden der bekannten Ausführungsformen entspricht.In Fig. 1, a first embodiment of a film pressure sensor according to the Invention is shown, consisting of a single sensor element 1 with four connection points A, B, C, D. From the connection point A extends a continuous Lei terbahn 2 to the connection point C, as well as a conductor 3rd from B to D. In the pressure-sensitive area of the sensor element 1 , the conductor tracks 2 , 3 take a meandering course, the comb-like structures of the two conductor tracks 2 , 3 thus formed interlocking, which corresponds to the interdigitating electrodes of the known embodiments.

In diesem wie in den folgenden Ausführungsbeispielen füllt der drucksensitive Bereich eines Sensorelementes 1 eine kreisför­ mige Grundfläche aus, im Vorgriff auf die Verwendung beim Auf­ bau einer Sensormatte zur Sitzbelegungserkennung. Ohne weiteres sind jedoch auch andere geometrische Formen für die Grundfläche des drucksensitiven Bereiches denkbar.In this and in the following exemplary embodiments, the pressure-sensitive area of a sensor element 1 fills a circular base, in anticipation of the use when building a sensor mat for seat occupancy detection. However, other geometric shapes for the base of the pressure-sensitive area are also conceivable without further ado.

In Bezug auf die bekannten Foliendrucksensoren ist der erfin­ dungsgemäße voll abwärtskompatibel, da die Anschlußpunkte A, B des erfindungsgemäßen Foliendrucksensors in Fig. 1 den beiden Anschlüssen der bekannten Ausführungen entsprechen.With respect to the known film pressure sensors, the invention is fully downward compatible, since the connection points A, B of the film pressure sensor according to the invention in FIG. 1 correspond to the two connections of the known designs.

Die Funktionsprüfung des Foliendrucksensors geschieht wie folgt: Bei einer Prüfung auf Kurzschluß zwischen den beiden Leiterbahnen 2, 3 wird mit einer Widerstandsmessung zwischen den Anschlußpunkten A und B oder C und D der druckabhängige Widerstand (FSR) zwischen den Leiterbahnen 2 und 3 gemessen. Wie bisher weist eine Unterschreitung einer bestimmten unteren Schranke auf einen Kurzschluß zwischen den Leiterbahnen 2 und 3 hin. Da die Leiterbahnen 2 und 3 einen definierten Widerstand besitzen, deutet ein abweichendes Ergebnis einer Widerstands­ messung zwischen den Anschlußpunkten A und C bzw. B und D auf eine Störung hin. Wird ein deutlich erhöhter Widerstandswert gemessen, so ist dies ein Hinweis auf eine Leitungsunterbre­ chung, während eine Erniedrigung auf einen Kurzschluß zwischen verschiedenen Abschnitten einer Leiterbahn schließen läßt.The functional test of the film pressure sensor is carried out as follows: When testing for a short circuit between the two conductor tracks 2 , 3 , the pressure-dependent resistance (FSR) between the conductor tracks 2 and 3 is measured with a resistance measurement between the connection points A and B or C and D. As before, falling below a certain lower limit indicates a short circuit between the conductor tracks 2 and 3 . Since the conductor tracks 2 and 3 have a defined resistance, a different result of a resistance measurement between the connection points A and C or B and D indicates a fault. If a significantly increased resistance value is measured, this is an indication of a line interruption, while a decrease indicates a short circuit between different sections of a conductor track.

Die Fig. 2 zeigt ein zweites Ausführungsbeispiel, welches in einer Aneinanderreihung von einzelnen Sensorelementen des Typs des vorangehenden Ausführungsbeispiels besteht. Zwei aufeinan­ derfolgende Sensorelemente 1, wie sie in Fig. 1 dargestellt sind, werden in der Weise vernetzt, daß die Anschlußkontakte C und D des einen Sensorelementes mit den Anschlüssen A und B eines nachfolgenden Sensorelementes verbunden sind. Damit er­ geben sich in Fig. 2 zwei durchgehende, verzweigungsfreie Lei­ terbahnen 4 und 5, bei denen die elektronischen kammartigen Leiterbahnabschnitte der einzelnen Sensorelemente in Reihe ge­ schaltet sind, während die jeweils zwischen zwei gegenüberlie­ genden elektronischen Leiterbahnabschnitten anliegenden druck­ sensitiven Widerstände (FSR) parallel geschaltet sind. FIG. 2 shows a second exemplary embodiment, which consists of a series of individual sensor elements of the type of the preceding exemplary embodiment. Two successive sensor elements 1 , as shown in Fig. 1, are networked in such a way that the connection contacts C and D of one sensor element are connected to the connections A and B of a subsequent sensor element. So that there are in Fig. 2 two continuous, branch-free Lei terbahnen 4 and 5 , in which the electronic comb-like conductor track sections of the individual sensor elements are connected in series ge, while the pressure sensitive resistors (FSR) applied in each case between two opposing electronic conductor track sections in parallel are switched.

In gleicher Weise wie bei dem ersten Ausführungsbeispiel kann durch Messung des Widerstandes zwischen zwei der vier Anschluß­ punkte A, B, C, D der Foliendrucksensor in Fig. 2 überprüft werden. Darüberhinaus ist es möglich, aus den gemessenen Wi­ derstandswerten, eine Leitungsunterbrechung ungefähr zu loka­ lisieren, sofern die Einzelwiderstände der Sensorelemente 1.1 bis 1.4 unter gleichen äußeren Bedingungen bekannt sind. Wenn beispielsweise die eine Leitungsbahn 4 zwischen den Sensorele­ menten 1.3 und 1.4 unterbrochen ist, ergibt sich der gemessene Widerstand zwischen den Anschlußpunkten A und B aus der Paral­ lelschaltung der drei Widerstände der Sensorelemente 1.1, 1.2, 1.3 und der gemessene Widerstand zwischen den Anschlußpunkten C und D allein aus dem Widerstand des Sensorelementes 1.4. Umge­ kehrt kann auch zu jedem gemessenen Widerstand zwischen den An­ schlußpunkten A und B sowie C und D die entsprechende Fehler­ diagnose gestellt werden.In the same way as in the first embodiment, the film pressure sensor in Fig. 2 can be checked by measuring the resistance between two of the four connection points A, B, C, D. In addition, it is possible to approximately locate a line break from the measured resistance values, provided the individual resistances of the sensor elements 1.1 to 1.4 are known under the same external conditions. If, for example, a conductor path 4 between the sensor elements 1.3 and 1.4 is interrupted, the measured resistance between the connection points A and B results from the parallel connection of the three resistances of the sensor elements 1.1 , 1.2 , 1.3 and the measured resistance between the connection points C and D solely from the resistance of the sensor element 1.4 . Conversely, the corresponding error diagnosis can be made for each measured resistance between the connection points A and B as well as C and D.

Fig. 3 zeigt einen Foliendrucksensor, bei dem die Anschluß­ punkte C und D über einer Diode 8 für eine Stromrichtung lei­ tend verbunden sind. Mit einer umpolbaren Prüfspannung (< 0.7 V) an den Anschlußpunkten A und B kann unter einer Polarität, bei der die Diode 8 leitet, der Gesamtleitungswiderstand der Leiterbahnen 6 und 7 gemessen werden und auf eventuelle Stö­ rungen analysiert werden. Ist durch die Polung der Prüfspannung die Diode 8 gesperrt, so erfolgt die Messung der parallelge­ schalteten drucksensitiven FSR-Widerstände. In vorteilhafter Weise kann die Diode 8 auf dem nicht dargestellten Folienträger integriert werden, wodurch zwei Anschlußleitungen eingespart werden. Fig. 3 shows a film pressure sensor in which the connection points C and D are connected via a diode 8 for a current direction lei tend. With a polarity-reversible test voltage (<0.7 V) at the connection points A and B, the total line resistance of the conductor tracks 6 and 7 can be measured under a polarity at which the diode 8 conducts and analyzed for possible faults. Is the diode 8 blocked by the polarity of the test voltage, then the measurement of the parallel-connected pressure-sensitive FSR resistors takes place. Advantageously, the diode 8 can be integrated on the film carrier, not shown, whereby two connecting lines are saved.

In Fig. 4a ist ein Foliendrucksensor dargestellt, welcher als Sensormatte 9 zur Sitzbelegungserkennung für einen Fahrzeugsitz ausgestaltet ist. Innerhalb der Sitzkontur 10 befinden sich auf einem gemeinsamen Folienträger 11 eine Reihe von Sensorele­ menten 12 vom gleichen Typ wie das Sensorelement 1 in Fig. 1, wobei die Sensorelemente 12 nach dem Prinzip des Ausführungs­ beispiels in Fig. 2 vernetzt sind.In Fig. 4a, a film-type pressure sensor is shown, which is designed as a sensor mat for detecting seat occupancy 9 for a vehicle seat. Within the seat contour 10 are on a common film carrier 11 a number of Sensorele elements 12 of the same type as the sensor element 1 in Fig. 1, wherein the sensor elements 12 are networked according to the principle of execution example in Fig. 2.

Um eine durchgehende, verzweigungsfreie Leitungsführung zu er­ halten, bei einer möglichst gleichmäßigen Verteilung der Sen­ sorelemente 12 über die gesamte Sitzfläche, sind die Sensor­ elemente 12 entlang einer in Schleifen geführten Doppelring­ leitung 13 angeordnet, wobei jeweils mehrere Sensorelemente 12 in Form von stegartig in die Sitzfläche hineinragenden Sensor­ gruppen zusammengefaßt sind.In order to maintain a continuous, branch-free cable routing, with the most uniform possible distribution of the sensor elements 12 over the entire seat surface, the sensor elements 12 are arranged along a looped double ring line 13 , with several sensor elements 12 in the form of web-like in each Seat protruding sensor groups are summarized.

Im mittleren Sitzbereich 11 muß der Einsatz von Kindersitzen mit einer sehr kleinen spezifischen Flächenbelastung berück­ sichtigt werden, weshalb die Sensorelemente 12 in kürzeren Ab­ ständen zueinander angeordnet sind als in dem vorderen Sitzbe­ reich IV und dem Bereich der Seitenbacken I und III.In the middle seat area 11 , the use of child seats with a very small specific surface load must be taken into account, which is why the sensor elements 12 are arranged in shorter distances from each other than in the front seat area IV and the area of the side bolsters I and III.

Aufgrund der nach oben gewölbten Struktur der Seitenbacken I und III treten durch das Bespannen Torsionskräfte auf. Da diese nicht auf das Sensorelement übertragen werden dürfen, wäre das Sensorelement 12 idealerweise punktförmig zu gestalten. Due to the upward-arching structure of the side jaws I and III, torsional forces occur as a result of the covering. Since these must not be transferred to the sensor element, the sensor element 12 would ideally be designed in a punctiform manner.

Andererseits müssen die Sensorelemente 12 auch so groß sein, daß eine ausreichende Empfindlichkeit in normaler Richtung bei Sitzbelegung sichergestellt ist. In der Praxis hat sich ein kreisförmiges Sensorelement 12 mit einem Durchmesser von unge­ fähr 10 mm bewährt.On the other hand, the sensor elements 12 must also be large enough to ensure sufficient sensitivity in the normal direction when the seat is occupied. In practice, a circular sensor element 12 with a diameter of approximately 10 mm has proven itself.

Anfang und Ende der Doppelringleitung 13 sind mit Anschlußkon­ takten 14 verbunden, welche von oben nach unten betrachtet den Anschlußpunkten A, B, C, D des Ausführungsbeispiels der Fig. 2 entsprechen,.The beginning and end of the double ring line 13 are connected to Kontaktkon contacts 14 , which, viewed from the top down, correspond to the connection points A, B, C, D of the exemplary embodiment in FIG. 2.

Eine Widerstandsmessung zwischen den Anschlußpunkten A und B bzw. 3 und 4 ergibt die Aussage "Sitz belegt" oder "Sitz unbelegt", wobei der Dynamikumfang der Sensormatte zwischen 500 Ohm und 30 MOhm liegt. Widerstände unterhalb von ca. 500 Ohm deuten auf einen Kurzschluß zwischen zwei gegenüberliegenden Elektroden oder zwischen zwei Verbindungsleitungen hin und lassen sich somit als Fehler diagnostizieren. Daneben können auch Fehler, die auf eine Unterbrechung der Leiterbahnen beru­ hen, wie in den vorhergehenden Ausführungsbeispielen durch Wi­ derstandsmessungen zwischen den Kontakten A und C sowie B und D aufgespürt werden. Damit ist die Sensormatte 9 auf alle Fehler­ zustände eindeutig prüfbar. Bei einer Fehlermeldung können von einem übergeordneten Steuergerät Maßnahmen getroffen werden, das Sicherheitssystem in einen sicheren Betriebszustand zu­ schalten, z. B. eine von der Sitzbelegung unabhängige Auslösung eines Beifahrer-Airbags.A resistance measurement between the connection points A and B or 3 and 4 yields the statement "seat occupied" or "seat unoccupied", the dynamic range of the sensor mat being between 500 ohms and 30 MOhms. Resistors below approx. 500 ohms indicate a short circuit between two opposite electrodes or between two connecting lines and can therefore be diagnosed as a fault. In addition, errors that are based on an interruption of the conductor tracks, as in the previous exemplary embodiments, can be detected by resistance measurements between contacts A and C as well as B and D. The sensor mat 9 can thus be clearly checked for all error states. In the event of an error message, measures can be taken by a higher-level control unit to switch the safety system into a safe operating state, e.g. B. independent of the seat occupancy triggering a passenger airbag.

Die vom Folienträger 11 nicht ausgefüllten großen Freiflächen lassen einen ausreichenden Luft- und Feuchtigkeitsaustausch zwischen der Sitzoberfläche und der Sitzunterseite zu und er­ möglichen dadurch ein angenehmes Sitzklima. The large open spaces not filled by the film carrier 11 allow sufficient air and moisture to be exchanged between the seat surface and the underside of the seat, thereby enabling a comfortable seating climate.

Die Fig. 4b zeigt einen Querschnitt durch das Sitzpolster des Fahrzeugsitzes. Die Sensormatte kann a) zwischen dem Bezug 15 und der Gummihaarmatte 16, b) innerhalb der Gummihaarmatte 16, c) zwischen der Gummihaarmatte 16 und dem Federrahmen 17 oder d) unmittelbar oberhalb der Sitzschale 18 angeordnet werden. FIG. 4b shows a cross section through the seat cushion of the vehicle seat. The sensor mat can be arranged a) between the cover 15 and the rubber hair mat 16 , b) inside the rubber hair mat 16 , c) between the rubber hair mat 16 and the spring frame 17 or d) directly above the seat shell 18 .

Aufgrund ihrer hohen Empfindlichkeit kann die Sensormatte 9 innerhalb des Sitzes deutlich unterhalb der Sitzoberfläche und somit unterhalb einer eventuell vorgesehenen Sitzheizung ange­ ordnet werden. Dies ermöglicht, die Sitzheizung möglichst weit oben an der Sitzoberfläche anzuordnen, um den Insassen schnell erwärmen zu können.Due to their high sensitivity, the sensor mat 9 can be arranged within the seat significantly below the seat surface and thus below a possibly provided seat heating. This makes it possible to arrange the seat heating as high as possible on the seat surface in order to be able to heat the occupant quickly.

Claims (4)

1. Resistiver Foliendrucksensor, insbesondere zur Sitzbele­ gungserkennung bei einem Fahrzeugsitz, dessen elektrischer Wi­ derstand mit zunehmender Normalkraft auf die Folienoberfläche abnimmt, bestehend aus zwei zusammenlaminierten Polymerlagen, wobei die eine Polymerlage mit einem Halbleitermaterial und die andere mit zwei Leiterbahnen beschichtet ist, welche von An­ schlußpunkten ausgehend Verbindungsleitungen bilden zu einem räumlich abgegrenzten drucksensitiven Sensorelement, wo die Leiterbahnen zu kammartigen, interdigitierend angeordneten Elektroden ausgebildet sind, dadurch gekennzeichnet, daß die Verbindungsleitungen und die Elektroden als durchgehende, verzweigungsfreie Leiterbahnen (2, 3) ausgeführt sind, wobei die kammartige Struktur der Elektroden durch eine mäandrierende Leitungsführung der Leiterbahnen (2, 3) erreicht wird, mit einem Anschlußpunkt am Anfang (A; B) und Ende (C; D) jeder Leiterbahn für einen beidseitigen Anschluß der Elektroden.1. Resistive film pressure sensor, in particular for seat occupancy detection in a vehicle seat, the electrical resistance of which decreases with increasing normal force on the film surface, consisting of two polymer layers laminated together, one polymer layer being coated with a semiconductor material and the other with two conductor tracks which are coated by An End points starting from connecting lines form a spatially delimited pressure-sensitive sensor element, where the conductor tracks are designed to form comb-like, interdigitating electrodes, characterized in that the connecting lines and the electrodes are designed as continuous, branch-free conductor tracks ( 2 , 3 ), the comb-like structure of the Electrodes are reached through a meandering routing of the conductor tracks ( 2 , 3 ), with a connection point at the beginning (A; B) and end (C; D) of each conductor track for connecting the electrodes on both sides. 2. Resistiver Foliendrucksensor nach Anspruch 1, dadurch ge­ kennzeichnet, daß mehrere Sensorelemente (1.1-1.4) in der Weise vernetzt sind, daß das Leiterbahnenpaar eines Sensorele­ mentes mit dem Leiterbahnenpaar eines folgenden Sensorelementes in Reihe geschaltet ist, wodurch die zwischen den interdigi­ tierenden Elektroden eines Sensorelementes anliegenden druck­ sensitiven Widerstände parallel geschaltet sind. 2. Resistive film pressure sensor according to claim 1, characterized in that a plurality of sensor elements ( 1.1-1.4 ) are networked in such a way that the pair of conductor elements of a sensor element is connected in series with the pair of conductor elements of a subsequent sensor element, as a result of which the electrodes interdigitating a pressure sensitive resistors connected to a sensor element are connected in parallel. 3. Resistiver Foliendrucksensor nach Anspruch 2, dadurch ge­ kennzeichnet, daß der Foliendrucksensor als Sensormatte (9) zur Sitzbelegungserkennung, insbesondere bei Fahrzeugsitzen, aus­ gebildet ist, wobei
  • - die einzelnen Sensorelemente (12) kreisförmig, mit einem Durchmesser von ungefähr 10 mm ausgeführt sind,
  • - die Sensorelemente (12) mit den Verbindungsleitungen eine mäandrierende Doppelringleitung (13) bilden, zur flächen­ deckenden Verteilung der Sensorelemente (12) auf der Sensormatte (9),
  • - im mittleren Sitzbereich (11) die Sensorelemente (12) in stegförmig in den Sitzbereich hineinragende Sensorgruppen zusammengefaßt sind, mit kleineren gegenseitigen Abständen der Sensorelemente (12) zueinander als in den anderen Sitz­ bereichen, zur Erzielung einer größeren Empfindlichkeit.
3. Resistive film pressure sensor according to claim 2, characterized in that the film pressure sensor is formed as a sensor mat ( 9 ) for seat occupancy detection, in particular in vehicle seats, from
  • - The individual sensor elements ( 12 ) are circular, with a diameter of approximately 10 mm,
  • - The sensor elements ( 12 ) form a meandering double ring line ( 13 ) with the connecting lines for the area-wide distribution of the sensor elements ( 12 ) on the sensor mat ( 9 ),
  • - In the middle seat area ( 11 ) the sensor elements ( 12 ) are combined in web-like protruding sensor groups in the seat areas, with smaller mutual distances of the sensor elements ( 12 ) from each other than in the other seat areas, to achieve greater sensitivity.
4. Resistiver Foliendrucksensor nach Anspruch 1, dadurch ge­ kennzeichnet, daß die Enden (C, D) der beiden Leiterbahnen (6, 7) über eine Diode (8) miteinander verbunden sind.4. Resistive film pressure sensor according to claim 1, characterized in that the ends (C, D) of the two conductor tracks ( 6 , 7 ) are connected to one another via a diode ( 8 ).
DE19924237072 1992-11-03 1992-11-03 Resistive film pressure or force sensor for indicating occupation of vehicle seat - has conductive paths for providing series of meandering interdigitated local area transducer electrodes on polymer and semiconductor substrate. Expired - Lifetime DE4237072C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19924237072 DE4237072C1 (en) 1992-11-03 1992-11-03 Resistive film pressure or force sensor for indicating occupation of vehicle seat - has conductive paths for providing series of meandering interdigitated local area transducer electrodes on polymer and semiconductor substrate.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19924237072 DE4237072C1 (en) 1992-11-03 1992-11-03 Resistive film pressure or force sensor for indicating occupation of vehicle seat - has conductive paths for providing series of meandering interdigitated local area transducer electrodes on polymer and semiconductor substrate.

Publications (1)

Publication Number Publication Date
DE4237072C1 true DE4237072C1 (en) 1993-12-02

Family

ID=6471982

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19924237072 Expired - Lifetime DE4237072C1 (en) 1992-11-03 1992-11-03 Resistive film pressure or force sensor for indicating occupation of vehicle seat - has conductive paths for providing series of meandering interdigitated local area transducer electrodes on polymer and semiconductor substrate.

Country Status (1)

Country Link
DE (1) DE4237072C1 (en)

Cited By (95)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4406897C1 (en) * 1994-03-03 1995-05-24 Daimler Benz Ag Arrangement for detecting occupation of motor vehicle seats
DE4409971A1 (en) * 1994-03-23 1995-09-28 Daimler Benz Ag Device for recognizing a child seat strapped to the front passenger seat of a motor vehicle
WO1997004984A1 (en) * 1995-07-29 1997-02-13 Robert Bosch Gmbh Arrangement for recognising the type of occupation of a vehicle seat
DE19530092A1 (en) * 1995-08-16 1997-02-20 Daimler Benz Ag Checkable film pressure sensor
DE19600346A1 (en) * 1996-01-08 1997-07-10 Fritz Hetzer Magnetic seat switch operated automatically by vehicle seat occupant
DE19601969A1 (en) * 1996-01-20 1997-07-24 Daimler Benz Ag Functional mat that can be contacted electrically, in particular sensor mat or heating mat
DE19602089A1 (en) * 1996-01-20 1997-07-24 Bayerische Motoren Werke Ag Safety system sensor for motor vehicle seat
EP0791834A2 (en) 1996-02-22 1997-08-27 TEMIC TELEFUNKEN microelectronic GmbH Method of determining the resistance value of a resistive device
WO1998014096A1 (en) 1996-10-04 1998-04-09 Matsushita Electric Industrial Co., Ltd. Human body sensor for seat
DE19644376A1 (en) * 1996-10-25 1998-04-30 Bayerische Motoren Werke Ag Adjustment device for a vehicle seat
DE19646480A1 (en) * 1996-11-11 1998-05-14 Karl Schweizer Automobile seat squab with seat occupation sensor
DE19752976A1 (en) * 1996-11-29 1998-06-04 Aisin Seiki Vehicle seat occupancy detector
DE19717273C1 (en) * 1997-04-24 1998-07-30 Volkswagen Ag Foil pressure sensor for seat occupancy determination in motor vehicle
WO1998050255A2 (en) * 1997-05-07 1998-11-12 Siemens Aktiengesellschaft Sensor circuit, specially for an automobiles
WO1998050249A2 (en) 1997-05-07 1998-11-12 Siemens Aktiengesellschaft Detection circuit and corresponding carrier
WO1999000651A1 (en) * 1997-06-26 1999-01-07 Robert Bosch Gmbh Signal processing circuit for status signals of a resistive-film pressure sensor
EP0895091A2 (en) * 1997-07-30 1999-02-03 I.E.E. International Electronics &amp; Engineering S.à.r.l. Method and circuit for monitoring the integrity of conductors in an arrangement of circuits connected in a matrix
DE19752822A1 (en) * 1997-11-28 1999-06-10 Telefunken Microelectron Arrangement and method for seat occupancy detection in a vehicle seat
WO1999030934A1 (en) * 1997-12-17 1999-06-24 Siemens Aktiengesellschaft Controller for a vehicle passenger protection means
LU90209B1 (en) * 1998-01-30 1999-08-02 Iee Sarl Pressure sensitive area sensor
EP0893300A3 (en) * 1997-07-24 1999-08-11 Bridgestone Corporation Seat with seat sensor
EP0964234A2 (en) * 1998-06-13 1999-12-15 Volkswagen Aktiengesellschaft Procedure and device for sensing pressure or force applied to a surface layer of an object
DE19826484A1 (en) * 1998-06-13 1999-12-16 Volkswagen Ag Sensor for location and / or time-resolving force or pressure measurement
WO2000000370A1 (en) * 1998-06-29 2000-01-06 Lear Corporation A vehicular seat assembly having a flexible air bag suppression sensor apparatus and method of installing the flexible air bag suppression sensor apparatus
LU90278B1 (en) * 1998-08-20 2000-02-21 Iee Sarl Flat electrode for incorporating into a vehicle seat as a recognition system comprises a flat textile material made of a metallized non-woven, woven or knitted fabric
WO2000011443A1 (en) * 1998-08-20 2000-03-02 I.E.E. International Electronics & Engineering S.A.R.L. Flat electrode for capacitive recognition systems
DE19905363C1 (en) * 1999-02-10 2000-05-04 Daimler Chrysler Ag Foldable vehicle seat with sensor which recognizes, whether back rest element is in folded or planar position
LU90309B1 (en) 1998-11-04 2000-05-05 Iee Sarl Passenger detector
EP1000797A2 (en) 1998-11-12 2000-05-17 Volkswagen Aktiengesellschaft Device and method for recognising the type of occupation of a vehicle seat
LU90321B1 (en) * 1998-11-18 2000-07-19 Iee Sarl Flat electrode for incorporating into a vehicle seat as a recognition system comprises a flat textile material made of a metallized non-woven, woven or knitted fabric
DE19752279C2 (en) * 1997-11-26 2000-09-28 Daimler Chrysler Ag Sensor arrangement and operating method therefor
WO2000069672A1 (en) * 1999-05-15 2000-11-23 Johnson Controls Automotive (U.K.) Ltd. Device for reclining vehicle seat
WO2001002823A1 (en) * 1999-07-01 2001-01-11 Emfitech Oy Method for the manufacture of a sensor element, and a sensor element
DE19734508C2 (en) * 1997-08-08 2001-05-17 Siemens Ag Control device for a passenger protection device of a motor vehicle
DE19910194C2 (en) * 1999-03-09 2001-06-28 Bosch Gmbh Robert Circuit arrangement for measuring the resistances of a pressure-sensitive resistance mat
DE19947733A1 (en) * 1999-10-05 2001-08-09 Deutsch Zentr Luft & Raumfahrt Device for accurately measuring and determining vehicle seat occupant data, such as weight and size, using force and moment sensors placed on or near the seat
US6289747B1 (en) 1998-01-21 2001-09-18 I.E.E. International Electronics & Engineering S.A.R.L. Pressure-sensitive area sensor
WO2001085509A1 (en) * 2000-05-11 2001-11-15 Nicola Betti Emergency brake automatic controlled device for motor vehicles or the like
DE10039774C1 (en) * 2000-08-16 2002-01-24 Bosch Gmbh Robert Measuring seat mat for automobile passenger seat, uses application of pressure loading by providing reduced pressure in seat mat
EP1067012A3 (en) * 1999-07-07 2002-02-06 HBM Wägetechnik GmbH Seat element, particularly an automotive vehicle seat with passenger detection
LU90771B1 (en) * 2001-05-08 2002-11-11 Iee Sarl Automotive seat detection device
DE19606527C2 (en) * 1996-02-22 2003-02-27 Conti Temic Microelectronic Method and circuit arrangement for seat occupancy detection using a two-zone sensor mat in a motor vehicle seat
NL1019607C2 (en) * 2001-12-19 2003-06-20 Dutch Space B V Sensor mat for registering a pressure profile.
WO2003053750A1 (en) 2001-12-07 2003-07-03 Siemens Aktiengesellschaft Sensor arrangement
DE10206673C1 (en) * 2002-02-18 2003-07-24 Siemens Restraint Systems Gmbh Automobile passenger seat occupation verification method using evaluation of contour and loading of seat occupation detection mat in riased and lowered positions of seat
DE10256538A1 (en) * 2002-12-04 2004-06-24 Adam Opel Ag Function mat for automobile passenger seat used for heating or detection of seat occupation and attached to seat via double-sided adhesive tape
WO2004069608A1 (en) * 2003-02-05 2004-08-19 Volskswagen Aktiengesellschaft Driver's seat comprising a weight-sensing mechanism
DE19944243B4 (en) * 1998-09-16 2005-02-10 Toyota Jidosha K.K., Toyota Side air bag device
US6865960B2 (en) 2001-03-30 2005-03-15 Siemens Aktiengesellschaft Capacitive microsystem for recording mechanical deformations, use and operating method
EP1580080A1 (en) * 2004-03-25 2005-09-28 Denso Corporation Seating sensor having film switch and resistor element
EP1588905A1 (en) 2004-04-22 2005-10-26 IEE INTERNATIONAL ELECTRONICS &amp; ENGINEERING S.A. Seat sensor system
US6964205B2 (en) 2003-12-30 2005-11-15 Tekscan Incorporated Sensor with plurality of sensor elements arranged with respect to a substrate
FR2870488A1 (en) * 2004-05-21 2005-11-25 Faurecia Sieges Automobile Motor vehicle seat, has seat cushion with longitudinal grooves having length and width adapted for receiving and maintaining connection bands inserted by flexion in grooves and retained at bottom of grooves
FR2870798A1 (en) * 2004-05-27 2005-12-02 Faurecia Sieges Automobile Motor vehicle seat, has flexible layer with two sides placed in respective baize packets for being maintained against seat cushion surface, where one packet allows sliding of one side at its interior, parallel to surface
EP1621411A1 (en) 2004-07-29 2006-02-01 IEE INTERNATIONAL ELECTRONICS &amp; ENGINEERING S.A. Seat sensor system
WO2006010702A1 (en) * 2004-07-29 2006-02-02 Iee International Electronics & Engineering S.A. Seat sensor system
DE102004037913A1 (en) * 2004-08-05 2006-03-16 Recaro Aircraft Seating Gmbh & Co. Kg Sensor for aircraft passenger seat head or backrest, position adjustment controlling system, has sensor units formed by foil sensors, which are arranged on flat substrates that are fixed on component by hook and loop fasteners
WO2006058573A1 (en) * 2004-11-29 2006-06-08 Bayerische Motoren Werke Aktiengesellschaft Seat occupation pressure sensor
DE4426677B4 (en) * 1993-08-20 2006-07-20 Volkswagen Ag Occupant protection device for a vehicle
EP1683684A1 (en) * 2005-01-21 2006-07-26 IEE INTERNATIONAL ELECTRONICS &amp; ENGINEERING S.A. Checkable seat occupancy sensor
DE102005003882A1 (en) * 2005-01-24 2006-07-27 Volkswagen Ag Detection and/or transmission unit arrangement for motor vehicle seat, has detection and/or transmission unit arranged in region of seat part, in which person seated down on seat forms uniform and laminar support on seat part
DE102005016648A1 (en) * 2005-04-12 2006-10-19 Bayerische Motoren Werke Ag Function e.g. safety function, controlling device for motor vehicle, has sensor component, and electrical control connected to control unit and applied based on output of analysis of electrical current generated in connecting cable
US7138907B2 (en) 2003-06-26 2006-11-21 Lear Corporation Spring sensor retention assembly for sensor apparatus mounted in a vehicle seat cushion
DE102005053744B3 (en) * 2005-11-10 2006-12-28 Lear Corp., Southfield Seat sensor method for determining an equivalent output value for a failed sensor in a vehicle seat with an occupancy sensor system uses an array of sensors to detect a body's presence
WO2007107523A1 (en) * 2006-03-17 2007-09-27 Iee International Electronics & Engineering S.A. Pressure sensor for measuring a characteristic of a pressure applied to the sensor
DE102006023466A1 (en) * 2006-05-18 2007-11-22 Siemens Ag Switch arrangement, sensor arrangement, method and apparatus for distinguishing a seat occupancy of a vehicle seat
DE102006056920A1 (en) * 2006-12-02 2008-06-05 GM Global Technology Operations, Inc., Detroit Sensor e.g. force sensor, device for seat of e.g. car, has sensors detecting force acting on surface of seat and connected with each other such that device outputs signal with respect to allocation of seat when sensors detect weight loading
US7424355B2 (en) 2005-05-04 2008-09-09 Daimlerchrysler Ag Method for operating and electrically adjustable vehicle seat
EP2100779A1 (en) * 2008-03-10 2009-09-16 IEE INTERNATIONAL ELECTRONICS &amp; ENGINEERING S.A. Seat sensor assembly
US7639125B2 (en) 2004-04-22 2009-12-29 Iee International Electronics & Engineering S.A. Seat belt warning system
DE102008006139B4 (en) * 2007-01-29 2010-02-04 Kabushiki Kaisha Toyota Jidoshokki, Kariya vehicle seat
DE202009012350U1 (en) 2009-09-14 2010-04-22 I.G. Bauerhin Gmbh Pressure sensor unit
US20110022357A1 (en) * 1994-11-21 2011-01-27 Nike, Inc. Location determining system
US8115648B2 (en) 2003-06-23 2012-02-14 Iee International Electronics & Engineering S.A. Seat occupancy sensor
DE102010043416A1 (en) * 2010-11-04 2012-05-10 Mayser Gmbh & Co. Kg vehicle seat
DE202011003186U1 (en) 2011-02-24 2012-05-25 I.G. Bauerhin Gmbh Pressure sensor unit for detecting the occupancy state of a seat
DE202011005145U1 (en) 2011-02-24 2012-06-29 I.G. Bauerhin Gmbh Occupancy detection device for detecting the occupancy state of a motor vehicle seat
DE102011012368A1 (en) 2011-02-24 2012-08-30 I.G. Bauerhin Gmbh Pressure sensor unit for detecting occupancy state of motor car seat for passenger, has sensor elements, where distance between edge of one of elements and other element corresponds to half of extension of element in transverse direction
DE102011012367A1 (en) 2011-02-24 2012-08-30 I.G. Bauerhin Gmbh Occupancy sensing device for detecting occupancy state of motor vehicle seat, has intermediate layer formed between bottom surface of recess and pressure sensor, which comprises reversibly deformable and homogeneous plastic material
DE202012005666U1 (en) 2012-06-12 2013-09-13 I.G. Bauerhin Gmbh Pressure sensor module for detecting the occupancy state of a seat
DE102013206069B3 (en) * 2013-04-05 2014-05-22 Lear Corp. Method for manufacturing seat sensor arrangement in vehicle, involves placing connector and conductor tracks on conductors by insulation unit to electrically connect flat electrical cables and film contact sensor
US8849606B2 (en) 1994-11-21 2014-09-30 Nike, Inc. Movement monitoring systems and associated methods
EP2829434A1 (en) 2013-07-24 2015-01-28 Comatel Casuel Improved seating element for a seat
EP1833702B2 (en) † 2005-01-03 2016-08-17 Iee International Electronics & Engineering S.A. Sensor mat comprising two switching levels
DE102015007106A1 (en) 2015-06-01 2016-12-01 NWTN-Berlin GmbH Shoe sole and shoe insole for measuring body weight
WO2016193014A1 (en) 2015-06-05 2016-12-08 Iee International Electronics & Engineering S.A. Wireless vehicle seat sensor unit adapted for removable vehicle seats
DE102016007964A1 (en) * 2016-07-03 2018-01-04 Holger Redtel Force measurement of an object by means of switchable and variable sensors
EP3290887A1 (en) * 2016-08-30 2018-03-07 Ergon International GmbH Device and method for determining a bicycle saddle size
WO2018167077A1 (en) 2017-03-13 2018-09-20 Holger Redtel Apparatus and method for measuring the cardiac pulse of a living being
DE202018004433U1 (en) 2017-09-27 2018-10-19 DB Kommunikationstechnik GmbH Device for remote monitoring of seats
US10473539B2 (en) 2016-06-30 2019-11-12 Tekscan, Inc. Stretchable force sensor having undulating patterned electrodes
US10654435B2 (en) * 2017-02-22 2020-05-19 Bgm Engineering, Inc. Sensor module for use in low-cost weight measurement and sensing system
CN112849071A (en) * 2019-11-26 2021-05-28 深圳市诚信恒佳科技有限公司 Seat belt monitoring method and seat belt sensor fault detection method
FR3126668A1 (en) * 2021-09-09 2023-03-10 Faurecia Sièges d'Automobile Heating and detection mat, method of manufacturing such a mat and vehicle seat
DE102022121752A1 (en) 2022-08-29 2024-02-29 Krall + Roth Sensor UG (haftungsbeschränkt) Device for transferring loads and method for its operation

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3044384A1 (en) * 1979-11-26 1981-08-27 Franklin Neal Eventoff PRESSURE SENSITIVE ELECTRONIC DEVICE
US5010774A (en) * 1987-11-05 1991-04-30 The Yokohama Rubber Co., Ltd. Distribution type tactile sensor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3044384A1 (en) * 1979-11-26 1981-08-27 Franklin Neal Eventoff PRESSURE SENSITIVE ELECTRONIC DEVICE
US5010774A (en) * 1987-11-05 1991-04-30 The Yokohama Rubber Co., Ltd. Distribution type tactile sensor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DE-Prospekt: Firma Interlink Electronics Europe 7/90 *

Cited By (147)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4426677B4 (en) * 1993-08-20 2006-07-20 Volkswagen Ag Occupant protection device for a vehicle
DE4426677C5 (en) * 1993-08-20 2013-11-14 Volkswagen Ag Occupant protection device for a vehicle
JP2753968B2 (en) 1994-03-03 1998-05-20 メルセデス−ベンツ・アクチエンゲゼルシヤフト Automotive seat use detection device
DE4406897C1 (en) * 1994-03-03 1995-05-24 Daimler Benz Ag Arrangement for detecting occupation of motor vehicle seats
DE4409971A1 (en) * 1994-03-23 1995-09-28 Daimler Benz Ag Device for recognizing a child seat strapped to the front passenger seat of a motor vehicle
US20110022357A1 (en) * 1994-11-21 2011-01-27 Nike, Inc. Location determining system
US8762092B2 (en) * 1994-11-21 2014-06-24 Nike, Inc. Location determining system
US8849606B2 (en) 1994-11-21 2014-09-30 Nike, Inc. Movement monitoring systems and associated methods
WO1997004984A1 (en) * 1995-07-29 1997-02-13 Robert Bosch Gmbh Arrangement for recognising the type of occupation of a vehicle seat
DE19530092A1 (en) * 1995-08-16 1997-02-20 Daimler Benz Ag Checkable film pressure sensor
DE19600346A1 (en) * 1996-01-08 1997-07-10 Fritz Hetzer Magnetic seat switch operated automatically by vehicle seat occupant
DE19601969A1 (en) * 1996-01-20 1997-07-24 Daimler Benz Ag Functional mat that can be contacted electrically, in particular sensor mat or heating mat
DE19602089C2 (en) * 1996-01-20 2000-09-21 Bayerische Motoren Werke Ag Device for seat occupancy detection
EP0785101A3 (en) * 1996-01-20 1998-04-01 Daimler-Benz Aktiengesellschaft Conductive mat, in particular sensitive mat or heating mat
DE19602089A1 (en) * 1996-01-20 1997-07-24 Bayerische Motoren Werke Ag Safety system sensor for motor vehicle seat
DE19606527C2 (en) * 1996-02-22 2003-02-27 Conti Temic Microelectronic Method and circuit arrangement for seat occupancy detection using a two-zone sensor mat in a motor vehicle seat
DE19606526B4 (en) * 1996-02-22 2004-11-11 Conti Temic Microelectronic Gmbh Method for determining the resistance value of a resistor arrangement
DE19606526A1 (en) * 1996-02-22 1997-08-28 Telefunken Microelectron Method for determining the resistance value of a resistor arrangement
EP0791834A2 (en) 1996-02-22 1997-08-27 TEMIC TELEFUNKEN microelectronic GmbH Method of determining the resistance value of a resistive device
EP0791834A3 (en) * 1996-02-22 1999-03-24 TEMIC TELEFUNKEN microelectronic GmbH Method of determining the resistance value of a resistive device
WO1998014096A1 (en) 1996-10-04 1998-04-09 Matsushita Electric Industrial Co., Ltd. Human body sensor for seat
DE19644376A1 (en) * 1996-10-25 1998-04-30 Bayerische Motoren Werke Ag Adjustment device for a vehicle seat
DE19646480A1 (en) * 1996-11-11 1998-05-14 Karl Schweizer Automobile seat squab with seat occupation sensor
DE19752976A1 (en) * 1996-11-29 1998-06-04 Aisin Seiki Vehicle seat occupancy detector
DE19752976C2 (en) * 1996-11-29 2000-05-31 Aisin Seiki Seat detection device
DE19717273C1 (en) * 1997-04-24 1998-07-30 Volkswagen Ag Foil pressure sensor for seat occupancy determination in motor vehicle
EP0873903A2 (en) 1997-04-24 1998-10-28 Volkswagen Aktiengesellschaft Sheet pressure sensor device for detecting vehicle seat occupancy
EP0873903A3 (en) * 1997-04-24 1999-03-03 Volkswagen Aktiengesellschaft Sheet pressure sensor device for detecting vehicle seat occupancy
WO1998050255A3 (en) * 1997-05-07 1999-02-04 Siemens Ag Sensor circuit, specially for an automobiles
DE19719455C2 (en) * 1997-05-07 1999-03-18 Siemens Ag Sensor circuit, especially for motor vehicles
WO1998050249A3 (en) * 1997-05-07 1999-02-04 Siemens Ag Detection circuit and corresponding carrier
WO1998050255A2 (en) * 1997-05-07 1998-11-12 Siemens Aktiengesellschaft Sensor circuit, specially for an automobiles
WO1998050249A2 (en) 1997-05-07 1998-11-12 Siemens Aktiengesellschaft Detection circuit and corresponding carrier
WO1999000651A1 (en) * 1997-06-26 1999-01-07 Robert Bosch Gmbh Signal processing circuit for status signals of a resistive-film pressure sensor
EP0893300A3 (en) * 1997-07-24 1999-08-11 Bridgestone Corporation Seat with seat sensor
EP0895091A3 (en) * 1997-07-30 2000-05-03 I.E.E. International Electronics &amp; Engineering S.à.r.l. Method and circuit for monitoring the integrity of conductors in an arrangement of circuits connected in a matrix
EP0895091A2 (en) * 1997-07-30 1999-02-03 I.E.E. International Electronics &amp; Engineering S.à.r.l. Method and circuit for monitoring the integrity of conductors in an arrangement of circuits connected in a matrix
US6254126B1 (en) 1997-08-08 2001-07-03 Siemens Aktiengesellscaft Device and method for detecting the weight of an object and/or an occupant on a vehicle seat
DE19734508C2 (en) * 1997-08-08 2001-05-17 Siemens Ag Control device for a passenger protection device of a motor vehicle
DE19752279C2 (en) * 1997-11-26 2000-09-28 Daimler Chrysler Ag Sensor arrangement and operating method therefor
DE19752822A1 (en) * 1997-11-28 1999-06-10 Telefunken Microelectron Arrangement and method for seat occupancy detection in a vehicle seat
DE19752822C2 (en) * 1997-11-28 1999-12-16 Telefunken Microelectron Arrangement and method for seat occupancy detection in a vehicle seat
WO1999030934A1 (en) * 1997-12-17 1999-06-24 Siemens Aktiengesellschaft Controller for a vehicle passenger protection means
US6289747B1 (en) 1998-01-21 2001-09-18 I.E.E. International Electronics & Engineering S.A.R.L. Pressure-sensitive area sensor
WO1999039168A1 (en) * 1998-01-30 1999-08-05 I.E.E. International Electronics & Engineering S.A.R.L. Pressure sensitive surface sensor
LU90209B1 (en) * 1998-01-30 1999-08-02 Iee Sarl Pressure sensitive area sensor
EP0964234A3 (en) * 1998-06-13 2000-06-14 Volkswagen Aktiengesellschaft Procedure and device for sensing pressure or force applied to a surface layer of an object
EP0964234A2 (en) * 1998-06-13 1999-12-15 Volkswagen Aktiengesellschaft Procedure and device for sensing pressure or force applied to a surface layer of an object
DE19826484A1 (en) * 1998-06-13 1999-12-16 Volkswagen Ag Sensor for location and / or time-resolving force or pressure measurement
WO2000000370A1 (en) * 1998-06-29 2000-01-06 Lear Corporation A vehicular seat assembly having a flexible air bag suppression sensor apparatus and method of installing the flexible air bag suppression sensor apparatus
LU90278B1 (en) * 1998-08-20 2000-02-21 Iee Sarl Flat electrode for incorporating into a vehicle seat as a recognition system comprises a flat textile material made of a metallized non-woven, woven or knitted fabric
WO2000011443A1 (en) * 1998-08-20 2000-03-02 I.E.E. International Electronics & Engineering S.A.R.L. Flat electrode for capacitive recognition systems
DE19944243B4 (en) * 1998-09-16 2005-02-10 Toyota Jidosha K.K., Toyota Side air bag device
LU90309B1 (en) 1998-11-04 2000-05-05 Iee Sarl Passenger detector
US6737953B2 (en) 1998-11-04 2004-05-18 I.E.E. International Electronics & Engineering S.A.R.L. Passenger detector
WO2000026626A1 (en) * 1998-11-04 2000-05-11 I.E.E. International Electronics & Engineering S.A.R.L. Passenger detector
EP1000797A2 (en) 1998-11-12 2000-05-17 Volkswagen Aktiengesellschaft Device and method for recognising the type of occupation of a vehicle seat
LU90321B1 (en) * 1998-11-18 2000-07-19 Iee Sarl Flat electrode for incorporating into a vehicle seat as a recognition system comprises a flat textile material made of a metallized non-woven, woven or knitted fabric
DE19905363C1 (en) * 1999-02-10 2000-05-04 Daimler Chrysler Ag Foldable vehicle seat with sensor which recognizes, whether back rest element is in folded or planar position
DE19910194C2 (en) * 1999-03-09 2001-06-28 Bosch Gmbh Robert Circuit arrangement for measuring the resistances of a pressure-sensitive resistance mat
WO2000069672A1 (en) * 1999-05-15 2000-11-23 Johnson Controls Automotive (U.K.) Ltd. Device for reclining vehicle seat
WO2001002823A1 (en) * 1999-07-01 2001-01-11 Emfitech Oy Method for the manufacture of a sensor element, and a sensor element
US7954385B2 (en) 1999-07-01 2011-06-07 Emfitech Oy Method and system for using a sensor element for identifying an object
US7685696B2 (en) 1999-07-01 2010-03-30 Emfitech Oy Method of manufacturing an electromechanical sensor element
EP1067012A3 (en) * 1999-07-07 2002-02-06 HBM Wägetechnik GmbH Seat element, particularly an automotive vehicle seat with passenger detection
DE19947733A1 (en) * 1999-10-05 2001-08-09 Deutsch Zentr Luft & Raumfahrt Device for accurately measuring and determining vehicle seat occupant data, such as weight and size, using force and moment sensors placed on or near the seat
DE19947733B4 (en) * 1999-10-05 2004-04-29 3Dconnexion Gmbh Device for acquiring and evaluating characteristic data on a vehicle seat and related evaluation method
WO2001085509A1 (en) * 2000-05-11 2001-11-15 Nicola Betti Emergency brake automatic controlled device for motor vehicles or the like
DE10039774C1 (en) * 2000-08-16 2002-01-24 Bosch Gmbh Robert Measuring seat mat for automobile passenger seat, uses application of pressure loading by providing reduced pressure in seat mat
US6865960B2 (en) 2001-03-30 2005-03-15 Siemens Aktiengesellschaft Capacitive microsystem for recording mechanical deformations, use and operating method
WO2002090901A1 (en) * 2001-05-08 2002-11-14 Iee International Electronics & Engineering S.A. Device for detecting passengers of a vehicle
LU90771B1 (en) * 2001-05-08 2002-11-11 Iee Sarl Automotive seat detection device
WO2003053750A1 (en) 2001-12-07 2003-07-03 Siemens Aktiengesellschaft Sensor arrangement
US7391224B2 (en) 2001-12-07 2008-06-24 Siemens Aktiengesellschaft Sensor arrangement
NL1019607C2 (en) * 2001-12-19 2003-06-20 Dutch Space B V Sensor mat for registering a pressure profile.
WO2003052368A1 (en) * 2001-12-19 2003-06-26 Dutch Space B.V. Sensor mat for registering a pressure profile
DE10206673C1 (en) * 2002-02-18 2003-07-24 Siemens Restraint Systems Gmbh Automobile passenger seat occupation verification method using evaluation of contour and loading of seat occupation detection mat in riased and lowered positions of seat
DE10256538A1 (en) * 2002-12-04 2004-06-24 Adam Opel Ag Function mat for automobile passenger seat used for heating or detection of seat occupation and attached to seat via double-sided adhesive tape
WO2004069608A1 (en) * 2003-02-05 2004-08-19 Volskswagen Aktiengesellschaft Driver's seat comprising a weight-sensing mechanism
US8115648B2 (en) 2003-06-23 2012-02-14 Iee International Electronics & Engineering S.A. Seat occupancy sensor
US7138907B2 (en) 2003-06-26 2006-11-21 Lear Corporation Spring sensor retention assembly for sensor apparatus mounted in a vehicle seat cushion
US6964205B2 (en) 2003-12-30 2005-11-15 Tekscan Incorporated Sensor with plurality of sensor elements arranged with respect to a substrate
EP1580080A1 (en) * 2004-03-25 2005-09-28 Denso Corporation Seating sensor having film switch and resistor element
CN100431879C (en) * 2004-03-25 2008-11-12 株式会社电装 Seating sensor having film switch and resistor element
EP1588905A1 (en) 2004-04-22 2005-10-26 IEE INTERNATIONAL ELECTRONICS &amp; ENGINEERING S.A. Seat sensor system
WO2005102787A1 (en) 2004-04-22 2005-11-03 Iee International Electronics & Engineering S.A. Seat sensor system
US7762583B2 (en) 2004-04-22 2010-07-27 Iee International Electronics & Engineering S.A. Seat sensor system
DE112005000787B4 (en) 2004-04-22 2017-03-30 Iee International Electronics & Engineering S.A. Seat sensor system
US7639125B2 (en) 2004-04-22 2009-12-29 Iee International Electronics & Engineering S.A. Seat belt warning system
FR2870488A1 (en) * 2004-05-21 2005-11-25 Faurecia Sieges Automobile Motor vehicle seat, has seat cushion with longitudinal grooves having length and width adapted for receiving and maintaining connection bands inserted by flexion in grooves and retained at bottom of grooves
FR2870798A1 (en) * 2004-05-27 2005-12-02 Faurecia Sieges Automobile Motor vehicle seat, has flexible layer with two sides placed in respective baize packets for being maintained against seat cushion surface, where one packet allows sliding of one side at its interior, parallel to surface
WO2006010702A1 (en) * 2004-07-29 2006-02-02 Iee International Electronics & Engineering S.A. Seat sensor system
EP1621411A1 (en) 2004-07-29 2006-02-01 IEE INTERNATIONAL ELECTRONICS &amp; ENGINEERING S.A. Seat sensor system
DE102004037913B4 (en) * 2004-08-05 2006-08-31 Recaro Aircraft Seating Gmbh & Co. Kg Sensor device and associated control system
DE102004037913A1 (en) * 2004-08-05 2006-03-16 Recaro Aircraft Seating Gmbh & Co. Kg Sensor for aircraft passenger seat head or backrest, position adjustment controlling system, has sensor units formed by foil sensors, which are arranged on flat substrates that are fixed on component by hook and loop fasteners
WO2006058573A1 (en) * 2004-11-29 2006-06-08 Bayerische Motoren Werke Aktiengesellschaft Seat occupation pressure sensor
US7595735B2 (en) 2004-11-29 2009-09-29 Bayerische Motoren Werke Aktiengesellschaft Seat occupancy sensor
CN101052550B (en) * 2004-11-29 2012-11-07 宝马股份公司 Seat occupy pressure sensor
EP1833702B2 (en) † 2005-01-03 2016-08-17 Iee International Electronics & Engineering S.A. Sensor mat comprising two switching levels
EP1683684A1 (en) * 2005-01-21 2006-07-26 IEE INTERNATIONAL ELECTRONICS &amp; ENGINEERING S.A. Checkable seat occupancy sensor
WO2006077002A1 (en) * 2005-01-21 2006-07-27 Iee International Electronics & Engineering S.A. Checkable seat occupancy sensor
JP2008528952A (en) * 2005-01-21 2008-07-31 アイイーイー インターナショナル エレクトロニクス アンド エンジニアリング エス．エイ． Checkable seat occupancy sensor
DE102005003882A1 (en) * 2005-01-24 2006-07-27 Volkswagen Ag Detection and/or transmission unit arrangement for motor vehicle seat, has detection and/or transmission unit arranged in region of seat part, in which person seated down on seat forms uniform and laminar support on seat part
DE102005003882B4 (en) * 2005-01-24 2015-03-05 Volkswagen Ag Arrangement of a device for seat occupancy detection in a motor vehicle seat
DE102005016648A1 (en) * 2005-04-12 2006-10-19 Bayerische Motoren Werke Ag Function e.g. safety function, controlling device for motor vehicle, has sensor component, and electrical control connected to control unit and applied based on output of analysis of electrical current generated in connecting cable
US7424355B2 (en) 2005-05-04 2008-09-09 Daimlerchrysler Ag Method for operating and electrically adjustable vehicle seat
DE102005053744B3 (en) * 2005-11-10 2006-12-28 Lear Corp., Southfield Seat sensor method for determining an equivalent output value for a failed sensor in a vehicle seat with an occupancy sensor system uses an array of sensors to detect a body's presence
WO2007107523A1 (en) * 2006-03-17 2007-09-27 Iee International Electronics & Engineering S.A. Pressure sensor for measuring a characteristic of a pressure applied to the sensor
DE102006023466A1 (en) * 2006-05-18 2007-11-22 Siemens Ag Switch arrangement, sensor arrangement, method and apparatus for distinguishing a seat occupancy of a vehicle seat
DE102006056920A1 (en) * 2006-12-02 2008-06-05 GM Global Technology Operations, Inc., Detroit Sensor e.g. force sensor, device for seat of e.g. car, has sensors detecting force acting on surface of seat and connected with each other such that device outputs signal with respect to allocation of seat when sensors detect weight loading
DE102006056920B4 (en) * 2006-12-02 2019-07-04 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Sensor device for the seat of a means of transport
US7953522B2 (en) 2007-01-29 2011-05-31 Toyoto Boshoku Kabushiki Kaisha Vehicle seats
DE102008006139B4 (en) * 2007-01-29 2010-02-04 Kabushiki Kaisha Toyota Jidoshokki, Kariya vehicle seat
EP2100779A1 (en) * 2008-03-10 2009-09-16 IEE INTERNATIONAL ELECTRONICS &amp; ENGINEERING S.A. Seat sensor assembly
WO2009112366A1 (en) * 2008-03-10 2009-09-17 Iee International Electronics & Engineering S.A. Seat sensor assembly
DE202009012350U1 (en) 2009-09-14 2010-04-22 I.G. Bauerhin Gmbh Pressure sensor unit
DE202010003563U1 (en) 2009-09-14 2010-07-22 I.G. Bauerhin Gmbh Pressure sensor unit
WO2011029491A1 (en) 2009-09-14 2011-03-17 I.G. Bauerhin Gmbh Pressure sensor unit
DE102010043416A1 (en) * 2010-11-04 2012-05-10 Mayser Gmbh & Co. Kg vehicle seat
DE102012003243A1 (en) 2011-02-24 2012-08-30 I.G. Bauerhin Gmbh Occupancy detection device for detecting an occupancy state of a motor vehicle seat
DE202011005145U1 (en) 2011-02-24 2012-06-29 I.G. Bauerhin Gmbh Occupancy detection device for detecting the occupancy state of a motor vehicle seat
DE102011012368B4 (en) * 2011-02-24 2013-11-14 I.G. Bauerhin Gmbh Pressure sensor unit for detecting the occupancy state of a seat
DE202011003186U1 (en) 2011-02-24 2012-05-25 I.G. Bauerhin Gmbh Pressure sensor unit for detecting the occupancy state of a seat
DE102012003243B4 (en) * 2011-02-24 2020-09-17 I.G. Bauerhin Gmbh Occupancy detection device for detecting an occupancy of a motor vehicle seat
EP2492652A2 (en) 2011-02-24 2012-08-29 I.G. Bauerhin GmbH Pressure sensor unit for detecting whether a seat is occupied
DE102011012367A1 (en) 2011-02-24 2012-08-30 I.G. Bauerhin Gmbh Occupancy sensing device for detecting occupancy state of motor vehicle seat, has intermediate layer formed between bottom surface of recess and pressure sensor, which comprises reversibly deformable and homogeneous plastic material
DE102011012368A1 (en) 2011-02-24 2012-08-30 I.G. Bauerhin Gmbh Pressure sensor unit for detecting occupancy state of motor car seat for passenger, has sensor elements, where distance between edge of one of elements and other element corresponds to half of extension of element in transverse direction
DE102011012367C5 (en) 2011-02-24 2019-04-04 I.G. Bauerhin Gmbh Occupancy detection device for detecting the occupancy state of a motor vehicle seat
EP2674321A2 (en) 2012-06-12 2013-12-18 I.G. Bauerhin GmbH Pressure sensor module unit for detecting whether a seat is occupied
DE202012005666U1 (en) 2012-06-12 2013-09-13 I.G. Bauerhin Gmbh Pressure sensor module for detecting the occupancy state of a seat
DE102013206069B3 (en) * 2013-04-05 2014-05-22 Lear Corp. Method for manufacturing seat sensor arrangement in vehicle, involves placing connector and conductor tracks on conductors by insulation unit to electrically connect flat electrical cables and film contact sensor
EP2829434A1 (en) 2013-07-24 2015-01-28 Comatel Casuel Improved seating element for a seat
FR3008874A1 (en) * 2013-07-24 2015-01-30 Comatel Casuel IMPROVED SEAT ELEMENT FOR SEAT
DE102015007106A1 (en) 2015-06-01 2016-12-01 NWTN-Berlin GmbH Shoe sole and shoe insole for measuring body weight
DE102015007106B4 (en) * 2015-06-01 2017-07-06 NWTN-Berlin GmbH Shoe sole and shoe insole for measuring body weight
WO2016193328A2 (en) 2015-06-01 2016-12-08 NWTN-Berlin GmbH Shoe sole and shoe insole for measuring body weight
US10252695B2 (en) 2015-06-05 2019-04-09 Iee International Electronics & Engineering S.A. Wireless vehicle seat sensor unit adapted for removable vehicle seats
WO2016193014A1 (en) 2015-06-05 2016-12-08 Iee International Electronics & Engineering S.A. Wireless vehicle seat sensor unit adapted for removable vehicle seats
US10473539B2 (en) 2016-06-30 2019-11-12 Tekscan, Inc. Stretchable force sensor having undulating patterned electrodes
DE102016007964A1 (en) * 2016-07-03 2018-01-04 Holger Redtel Force measurement of an object by means of switchable and variable sensors
EP3290887A1 (en) * 2016-08-30 2018-03-07 Ergon International GmbH Device and method for determining a bicycle saddle size
US10654435B2 (en) * 2017-02-22 2020-05-19 Bgm Engineering, Inc. Sensor module for use in low-cost weight measurement and sensing system
WO2018167077A1 (en) 2017-03-13 2018-09-20 Holger Redtel Apparatus and method for measuring the cardiac pulse of a living being
DE202018004433U1 (en) 2017-09-27 2018-10-19 DB Kommunikationstechnik GmbH Device for remote monitoring of seats
CN112849071A (en) * 2019-11-26 2021-05-28 深圳市诚信恒佳科技有限公司 Seat belt monitoring method and seat belt sensor fault detection method
FR3126668A1 (en) * 2021-09-09 2023-03-10 Faurecia Sièges d'Automobile Heating and detection mat, method of manufacturing such a mat and vehicle seat
DE102022121752A1 (en) 2022-08-29 2024-02-29 Krall + Roth Sensor UG (haftungsbeschränkt) Device for transferring loads and method for its operation

Similar Documents

Publication Publication Date Title
DE4237072C1 (en) Resistive film pressure or force sensor for indicating occupation of vehicle seat - has conductive paths for providing series of meandering interdigitated local area transducer electrodes on polymer and semiconductor substrate.
DE4406897C1 (en) Arrangement for detecting occupation of motor vehicle seats
EP1704074B1 (en) Circuit arrangement for recognising the occupancy of a seat and seatbelt warning in a motor vehicle
DE19910194C2 (en) Circuit arrangement for measuring the resistances of a pressure-sensitive resistance mat
DE102006002919B4 (en) Capacitive sensor and occupant detection system
EP0891898B1 (en) Method and apparatus for recording various parameters of a person seat on a support
WO2005001864A1 (en) Pressure sensor in the form of a film
EP0758741B1 (en) Sheet pressure sensor
EP2127957B1 (en) Seatbelt warning system
DE10212023A1 (en) Sensor cell, especially for use in the sensor mat of a motor vehicle seat, has a piezoelectric resistance element with at least one additional contact so that two resistance measurements are made
DE10203148B4 (en) Error detection method and device for a sensor network
DE19717273C1 (en) Foil pressure sensor for seat occupancy determination in motor vehicle
DE19532764A1 (en) Semiconductor acceleration detection system for motor vehicle ABS brake and air bag deployment systems
EP1379849B1 (en) Circuit arrangement with several sensor elements in matrix circuit design
WO1999039168A1 (en) Pressure sensitive surface sensor
DE2213977C3 (en) Circuit for testing several switching elements connected in parallel between two terminals
EP1491408A1 (en) Seat occupant sensor
WO2006053880A1 (en) Sensor with a deformation-dependent value of resistance
EP1474669B1 (en) Method for determining the electrical resistance of an electrical supply lead to sensor elements, and a sensor arrangement
DE102016005837B4 (en) Pressure sensitive sensor system
DE19606527C2 (en) Method and circuit arrangement for seat occupancy detection using a two-zone sensor mat in a motor vehicle seat
DE112015001310T5 (en) Seat occupancy sensor
DE19701808C2 (en) Device for triggering a security system in a vehicle
DE19806754A1 (en) Sensor element
WO2001069234A1 (en) Electronic device for detecting the conductance

Legal Events

Date Code Title Description
8100 Publication of the examined application without publication of unexamined application
D1 Grant (no unexamined application published) patent law 81
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: DAIMLER-BENZ AKTIENGESELLSCHAFT, 70567 STUTTGART,

8327 Change in the person/name/address of the patent owner

Owner name: DAIMLERCHRYSLER AG, 70567 STUTTGART, DE INTERLINK

8327 Change in the person/name/address of the patent owner

Owner name: DAIMLERCHRYSLER AG, 70327 STUTTGART, DE

Owner name: INTERLINK ELECTRONICS EUROPE, ECHTERNACH, LU

8327 Change in the person/name/address of the patent owner

Owner name: DAIMLER AG, 70327 STUTTGART, DE

Owner name: INTERLINK ELECTRONICS EUROPE, ECHTERNACH, LU

8330 Complete disclaimer