WO2004047045A1 - Accident prevention system - Google Patents

Accident prevention system Download PDF

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Publication number
WO2004047045A1
WO2004047045A1 PCT/CH2003/000711 CH0300711W WO2004047045A1 WO 2004047045 A1 WO2004047045 A1 WO 2004047045A1 CH 0300711 W CH0300711 W CH 0300711W WO 2004047045 A1 WO2004047045 A1 WO 2004047045A1
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WO
WIPO (PCT)
Prior art keywords
vehicle
information
danger
devices
received
Prior art date
Application number
PCT/CH2003/000711
Other languages
French (fr)
Inventor
Thierry Racine
Original Assignee
Thierry Racine
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 Thierry Racine filed Critical Thierry Racine
Priority to AU2003271506A priority Critical patent/AU2003271506A1/en
Publication of WO2004047045A1 publication Critical patent/WO2004047045A1/en

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
    • G08G1/096708—Systems involving transmission of highway information, e.g. weather, speed limits where the received information might be used to generate an automatic action on the vehicle control
    • G08G1/096716—Systems involving transmission of highway information, e.g. weather, speed limits where the received information might be used to generate an automatic action on the vehicle control where the received information does not generate an automatic action on the vehicle control
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
    • G08G1/096733—Systems involving transmission of highway information, e.g. weather, speed limits where a selection of the information might take place
    • G08G1/09675—Systems involving transmission of highway information, e.g. weather, speed limits where a selection of the information might take place where a selection from the received information takes place in the vehicle
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
    • G08G1/096766—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission
    • G08G1/096783—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission where the origin of the information is a roadside individual element
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
    • G08G1/096766—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission
    • G08G1/096791—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission where the origin of the information is another vehicle
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/16—Anti-collision systems
    • G08G1/164—Centralised systems, e.g. external to vehicles

Definitions

  • the present invention relates to traffic accident prevention systems. It relates, more particularly, to a system making it possible to inform the driver of a vehicle of dangers, obstacles, anomalies, etc. of which he is likely to be a victim.
  • the object of the present invention is precisely to provide a system free from the drawbacks reducing the advantage of the devices mentioned above.
  • the invention relates to an accident prevention system consisting of a plurality of devices, fixed or placed in a vehicle, capable of communicating with each other and each comprising a memory and a microprocessor programmed to control the following operations :
  • the information contained in the memory of the fixed device includes the nature of the danger, its position and the attitude to adopt.
  • this information includes, in addition, the date and time when the danger is actually present. They are issued only if they correspond to a danger actually existing at the present moment.
  • the information sent contained in the memory of the device placed in a vehicle includes, essentially, the nature of the danger, for each type of danger, its identification and, for each identified danger, the safety rules to be observed.
  • the information from the vehicle itself includes the indication that it is in difficulty but also, preferably, the indication that a very serious fault has been committed by its driver.
  • Information from the vehicle itself also includes its position, direction and speed.
  • the transmission of information by the device placed in a vehicle is stopped when it goes from stop to walk.
  • the display of certain information by the device placed in a vehicle can be disabled by its driver.
  • the operation of verifying the information received by the device placed in a vehicle consists in determining whether it is actually approaching the danger signaled.
  • the operation of verifying the information received by the device placed in a vehicle also consists in determining whether it respects the speed limit in force.
  • FIG. 1 is a schematic representation of the system according to the invention.
  • FIG. 2 split into two parts 2a and 2b, shows the structure of the program driving the system devices, whether fixed or embedded in a vehicle.
  • the system according to the invention consists of devices, such as that shown in FIG. 1, capable of communicating with one another. They can be either fixed and placed, for example, near a school, a public place, a dangerous bend, the place of an accident, ... or mobile and installed, for example, in a automobile, a slow vehicle, an ambulance, a police car, a fire engine, ... or carried by a pedestrian, a cyclist, ... which, to facilitate the description, will be qualified as a vehicle.
  • the device represented in FIG. 1 essentially comprises, inside a housing 10, a GPS system 11, a transceiver 12, a microprocessor 13 coupled to these two bodies and associated with a memory 14.
  • An antenna 15 connects outside the GPS 11 and the transceiver 12.
  • the microprocessor 13 can receive, from the outside, on an input 16, information coming from the vehicle in which the device is installed. It is also connected, outside the housing, to a display 17 and to an alarm sound 18. Finally, an input 19 is used to connect a keyboard allowing data and commands to be entered into the device.
  • FIG. 1 The configuration shown in Figure 1 is that of a device installed in a vehicle. When it is a fixed device, some of these elements are not necessary, as will appear in the following description. For example, a fixed terminal signaling a school does not need a GPS or a receiver.
  • FIG. 2 represents the structure of the program animating the microprocessor 13, whether the device is fixed or mobile.
  • the first operation 30 is, on the basis of the data previously entered in the memory 14, to determine whether it is fixed or mobile.
  • the following operations are the reading 31, in the internal clock of the microprocessor 13, of the date and the time, then the verification 32 of whether, at the present moment, the memory 14 contains information regarding specific traffic restrictions in effect at this location.
  • the device When, for example, the device is near a school, it will determine whether, to date and at this time, schoolchildren are around.
  • the system generates, at 33, a message containing, typically, the following information:
  • the message is then transmitted, at 34, typically at the rate of 4 packets per second distributed randomly in a 250 ms window, after which the system returns to the starting point to start a new cycle. If, on the contrary, the day and the hour do not correspond to the presence of a danger, the system emits nothing and returns directly to its starting point.
  • the first operation is, at 35, the detection of an anomaly which can either be signaled by the vehicle electronics on input 16, for example, by case of strong deceleration, sudden change of direction, ignition of fog lights or distress, ... is received by the receiver 12 to which an external terminal has indicated, for example, that the vehicle takes the highway against sense, ...
  • the following operation 36 consists in determining whether a danger has been detected.
  • the system elaborates, at 37, a message containing, typically, the following three levels of information, describing the risks presented by the vehicle:
  • emergency vehicle police vehicle, fire engine, ambulance, ...;
  • the message developed in 37 may still contain the following information:
  • the message thus prepared is then sent at 38, in the same way as at 34, as long as the anomaly remains.
  • the transmission can also be stopped after a few seconds if the driver of the vehicle deactivates the device using the keypad or, automatically, when after a stop, the vehicle restarts.
  • the device then passes to the reception program, the first operation of which consists in checking whether a message has been received.
  • the system When no anomaly has been detected at 36, the system immediately proceeds to operation 39. If a message has been received, the system checks, at 40, that the message relates to the vehicle because its direction risks making it meet the danger. The verification is made on the basis of the position and direction information which it has received and which is specific to it. It is useless, in fact, to alert the driver of a vehicle to a danger which, of course, is close to him but which he is not likely to encounter.
  • check 40 When check 40 is negative, the system returns to the starting point to start a new cycle.
  • the verification 40 confirms that the message indeed relates to the vehicle
  • the next operation is, at 41, the determination of its position and that of the source which transmits the message followed by the calculation of the variation of the distance which separates them.
  • This position determination can be done either using the information provided by the vehicle GPS or by measuring the reception level of the received signal.
  • the system must then, at 42, from the calculation of variation of distance carried out at 41, determine whether the vehicle is approaching the danger and / or if the danger is approaching it.
  • the system If the vehicle is moving away from the danger concerned, since there is no need to alert its driver, the system returns to the starting point to start a new cycle. If, on the contrary, the vehicle is approaching danger, the system alerts its driver, at 43, by making appear on display 17 a message corresponding to the information received and, possibly, by activating the acoustic alarm 18. The next operation consists in checking, at 44, whether the message received indicates a speed limit.
  • the system determines, at 45, the speed of the vehicle using its GPS or its tachometer then, at 46, determines if the speed imposed is respected.

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  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Traffic Control Systems (AREA)

Abstract

The invention concerns an accident prevention system consisting of a plurality of devices, fixed or placed in a vehicle, capable of communicating with one another and comprising each a storage unit and a microprocessor programmed to control the following operations: if it is fixed, transmission of data contained in its storage unit, concerning the presence of a danger; if it is placed in a vehicle: reception of data transmitted by other devices, verifying that the received data actually concern the vehicle, signalling said data to its driver, detecting anomalies signaled by the vehicle itself, detecting anomalies received from other devices, and transmitting data concerning the danger which the vehicle represents and including data contained in the storage unit, data concerning self-indicated anomalies and data concerning anomalies received from other devices.

Description

SYSTEME DE PREVENTION D'ACCIDENTS ACCIDENT PREVENTION SYSTEM
La présente invention se rapporte aux systèmes de prévention d'accidents de la circulation. Elle concerne, plus particulièrement, un système permettant d'informer le conducteur d'un véhicule de dangers, entraves, anomalies,.... dont il risque d'être victime.The present invention relates to traffic accident prevention systems. It relates, more particularly, to a system making it possible to inform the driver of a vehicle of dangers, obstacles, anomalies, etc. of which he is likely to be a victim.
De tels systèmes ont déjà été proposés. Généralement, le conducteur du véhicule reçoit sur un écran, à sa demande ou automatiquement, avec ou sans l'aide d'un système GPS permettant de déterminer sa position, des informations concernant les problèmes de trafic dans une région donnée, la manière d'éviter les embouteillages, les zones à vitesse limitée, les stations service proches,...Such systems have already been proposed. Generally, the driver of the vehicle receives on a screen, at his request or automatically, with or without the help of a GPS system making it possible to determine his position, information concerning the traffic problems in a given region, the manner of avoid traffic jams, limited speed zones, nearby service stations, ...
On remarquera toutefois que ces systèmes fournissent des informations très générales sur ce qui se passe dans un rayon donné, sans tenir compte, par exemple, de la direction du véhicule, de sa vitesse, des dangers présentés par d'autres véhicules arrêtés devant lui ou venant en sens inverse. En d'autre termes, les informations reçues ne sont pas ciblées sur la sécurité immédiate du véhicule en tenant compte de sa direction. Il est donc inutile, voire dangereux, de lui signaler un problème de circulation proche mais ne le concernant pas.Note, however, that these systems provide very general information about what is happening within a given radius, without taking into account, for example, the direction of the vehicle, its speed, the dangers presented by other vehicles stopped in front of it or oncoming. In other words, the information received is not targeted to the immediate safety of the vehicle, taking into account its direction. It is therefore useless, even dangerous, to report a problem with nearby traffic that does not concern him.
La présente invention a justement pour but de fournir un système exempt des inconvénients réduisant l'intérêt des dispositifs mentionnés ci-dessus.The object of the present invention is precisely to provide a system free from the drawbacks reducing the advantage of the devices mentioned above.
De façon plus précise, l'invention concerne un système de prévention d'accidents constitué d'une pluralité de dispositifs, fixes ou placés dans un véhicule, capables de communiquer entre eux et comportant chacun une mémoire et un microprocesseur programmé pour commander les opérations suivantes :More specifically, the invention relates to an accident prevention system consisting of a plurality of devices, fixed or placed in a vehicle, capable of communicating with each other and each comprising a memory and a microprocessor programmed to control the following operations :
- s'il est fixe, émission d'informations, contenues dans sa mémoire, relatives à la présence d'un danger, - s'il est placé dans un véhicule : . réception des informations émises par d'autres dispositifs, . vérification que les informations reçues concernent bien le véhicule,- if it is fixed, emission of information, contained in its memory, relating to the presence of a danger, - if it is placed in a vehicle: . reception of information sent by other devices,. verification that the information received relates to the vehicle,
. signalisation de ces informations à son conducteur, . détection d'anomalies signalées par le véhicule lui-même,. signaling of this information to its driver,. detection of anomalies reported by the vehicle itself,
. détection d'anomalies reçues d'autres dispositifs, et . émission d'informations relatives au danger que présente le véhicule et comprenant des informations contenues dans sa mémoire, des informations relatives aux anomalies signalées par lui-même et des informations relatives aux anomalies reçues d'autres dispositifs.. detection of anomalies received from other devices, and. emission of information relating to the danger presented by the vehicle and comprising information contained in its memory, information relating to the anomalies reported by itself and information relating to the anomalies received from other devices.
Le système selon l'invention présente encore les principales caractéristiques suivantes :The system according to the invention also has the following main characteristics:
- Les informations contenues dans la mémoire du dispositif fixe comprennent la nature du danger, sa position et l'attitude à adopter.- The information contained in the memory of the fixed device includes the nature of the danger, its position and the attitude to adopt.
- De préférence, ces informations comprennent, en plus, la date et l'heure auxquelles le danger est effectivement présent . Elles sont émises seulement si elles correspondent a un danger existant effectivement à l'instant présent. - Les informations émises contenues dans la mémoire du dispositif placé dans un véhicule comprennent, essentiellement, la nature du danger, pour chaque type de danger, son identification et, pour chaque danger identifié, les règles de sécurité à observer.- Preferably, this information includes, in addition, the date and time when the danger is actually present. They are issued only if they correspond to a danger actually existing at the present moment. - The information sent contained in the memory of the device placed in a vehicle includes, essentially, the nature of the danger, for each type of danger, its identification and, for each identified danger, the safety rules to be observed.
- Les informations provenant du véhicule lui-même comprennent l'indication qu'il est en difficulté mais aussi, de préférence, l'indication qu'une faute très grave a été commise par son conducteur.- The information from the vehicle itself includes the indication that it is in difficulty but also, preferably, the indication that a very serious fault has been committed by its driver.
- Les informations provenant du véhicule lui-même comprennent, en plus, sa position, sa direction et sa vitesse. - L'émission d'informations par le dispositif placé dans un véhicule est stoppée lorsque celui-ci passe de l'arrêt à la marche. - L'affichage de certaines informations par le dispositif placé dans un véhicule peut être désactivé par son conducteur.- Information from the vehicle itself also includes its position, direction and speed. - The transmission of information by the device placed in a vehicle is stopped when it goes from stop to walk. - The display of certain information by the device placed in a vehicle can be disabled by its driver.
- L'opération de vérification des informations reçues par le dispositif placé dans un véhicule consiste à déterminer s'il s'approche effectivement du danger signalé.- The operation of verifying the information received by the device placed in a vehicle consists in determining whether it is actually approaching the danger signaled.
- L'opération de vérification des informations reçues par le dispositif placé dans un véhicule consiste aussi à déterminer s'il respecte la limitation de vitesse en vigueur.- The operation of verifying the information received by the device placed in a vehicle also consists in determining whether it respects the speed limit in force.
D'autres caractéristiques de l'invention apparaîtront plus clairement à la lecture de la description qui va suivre, faite en regard du dessin annexé, dans lequel :Other characteristics of the invention will appear more clearly on reading the description which follows, made with reference to the appended drawing, in which:
- la figure 1 est une représentation schématique du système selon l'invention ; et- Figure 1 is a schematic representation of the system according to the invention; and
- la figure 2, scindée en deux parties 2a et 2b, montre la structure du programme animant les dispositifs du système, qu'ils soient fixes ou embarqués dans un véhicule.- Figure 2, split into two parts 2a and 2b, shows the structure of the program driving the system devices, whether fixed or embedded in a vehicle.
Le système selon l'invention est constitué de dispositifs, tels que celui représenté à la figure 1 , capables de communiquer entre eux. Ils peuvent être soit fixes et disposés, par exemple, à proximité d'une école, d'un lieu public, d'un virage dangereux, du lieu d'un accident,... soit mobiles et installés, par exemple, dans une automobile, un véhicule lent, une ambulance, une voiture de police, un véhicule de pompiers,... ou portés par un piéton, un cycliste, ... qui, pour faciliter la description, sera qualifié de véhicule.The system according to the invention consists of devices, such as that shown in FIG. 1, capable of communicating with one another. They can be either fixed and placed, for example, near a school, a public place, a dangerous bend, the place of an accident, ... or mobile and installed, for example, in a automobile, a slow vehicle, an ambulance, a police car, a fire engine, ... or carried by a pedestrian, a cyclist, ... which, to facilitate the description, will be qualified as a vehicle.
Le dispositif représenté à la figure 1 comporte essentiellement, à l'intérieur d'un boîtier 10, un système GPS 11 , un émetteur-récepteur 12, un microprocesseur 13 couplé à ces deux organes et associé à une mémoire 14. Une antenne 15 relie à l'extérieur le GPS 11 et l'émetteur-récepteur 12. Le microprocesseur 13 peut recevoir, de l'extérieur, sur une entrée 16, des informations provenant du véhicule dans lequel le dispositif est installé. Il est également relié, à l'extérieur du boîtier, à un affichage 17 et à une alarme sonore 18. Enfin, une entrée 19 sert à connecter un clavier permettant d'introduire des données et des ordres dans le dispositif.The device represented in FIG. 1 essentially comprises, inside a housing 10, a GPS system 11, a transceiver 12, a microprocessor 13 coupled to these two bodies and associated with a memory 14. An antenna 15 connects outside the GPS 11 and the transceiver 12. The microprocessor 13 can receive, from the outside, on an input 16, information coming from the vehicle in which the device is installed. It is also connected, outside the housing, to a display 17 and to an alarm sound 18. Finally, an input 19 is used to connect a keyboard allowing data and commands to be entered into the device.
La configuration représentée sur la figure 1 est celle d'un dispositif installé dans un véhicule. Lorsqu'il s'agit d'un dispositif fixe, certains de ces éléments ne sont pas nécessaires, ainsi que cela apparaîtra dans la suite de la description. Par exemple, une borne fixe signalant une école n'a pas besoin de GPS ni de récepteur.The configuration shown in Figure 1 is that of a device installed in a vehicle. When it is a fixed device, some of these elements are not necessary, as will appear in the following description. For example, a fixed terminal signaling a school does not need a GPS or a receiver.
On se référera maintenant à la figure 2 qui représente la structure du programme animant le microprocesseur 13, que le dispositif soit fixe ou mobile.Reference will now be made to FIG. 2 which represents the structure of the program animating the microprocessor 13, whether the device is fixed or mobile.
Lorsque le dispositif est enclenché, la première opération 30 est, sur la base des données préalablement introduites dans la mémoire 14, de déterminer s'il est fixe ou mobile.When the device is switched on, the first operation 30 is, on the basis of the data previously entered in the memory 14, to determine whether it is fixed or mobile.
Dans le cas d'une installation fixe, les opérations suivantes sont la lecture 31 , dans l'horloge interne du microprocesseur 13, de la date et de l'heure, puis la vérification 32 de si, à l'instant présent, la mémoire 14 contient des informations concernant des restrictions particulières de trafic en vigueur à cet endroit. Lorsque, par exemple, le dispositif est à proximité d'une école, il déterminera si, à ce jour et à cette heure, des écoliers se trouvent dans les parages.In the case of a fixed installation, the following operations are the reading 31, in the internal clock of the microprocessor 13, of the date and the time, then the verification 32 of whether, at the present moment, the memory 14 contains information regarding specific traffic restrictions in effect at this location. When, for example, the device is near a school, it will determine whether, to date and at this time, schoolchildren are around.
Si tel est le cas, le système élabore, en 33, un message contenant, typiquement, les informations suivantes :If this is the case, the system generates, at 33, a message containing, typically, the following information:
- nature du danger : école, travaux, accident, virage dangereux, carrefour modifié, verglas, brouillard, manifestation, ... ; - attitude à adopter : ralentir, serrer à droite, ... ;- nature of the danger: school, work, accident, dangerous turn, modified crossroads, ice, fog, demonstration, ...; - attitude to adopt: slow down, tighten to the right, ...;
- sa position : longitude et latitude ;- its position: longitude and latitude;
- éventuellement, le côté de la route où se trouve le danger.- possibly, the side of the road where the danger is.
Le message est alors émis, en 34, typiquement à raison de 4 paquets par seconde répartis de façon aléatoire dans une fenêtre de 250 ms, après quoi le système revient au point de départ pour entamer un nouveau cycle. Si, au contraire, le jour et l'heure ne correspondent pas à la présence d'un danger, le système n'émet rien et retourne directement à son point de départ.The message is then transmitted, at 34, typically at the rate of 4 packets per second distributed randomly in a 250 ms window, after which the system returns to the starting point to start a new cycle. If, on the contrary, the day and the hour do not correspond to the presence of a danger, the system emits nothing and returns directly to its starting point.
Lorsque le dispositif a déterminé, en 30, qu'il était mobile, la première opération est, en 35, la détection d'une anomalie qui peut être soit signalée par l'électronique du véhicule sur l'entrée 16, par exemple, en cas de forte décélération, de changement brusque de direction, d'allumage des feux de brouillard ou de détresse, ... soit captée par le récepteur 12 auquel une borne extérieure a indiqué, par exemple, que le véhicule emprunte l'autoroute à contre sens, ... L'opération suivante 36 consiste à déterminer si un danger a été détecté .When the device has determined, at 30, that it is mobile, the first operation is, at 35, the detection of an anomaly which can either be signaled by the vehicle electronics on input 16, for example, by case of strong deceleration, sudden change of direction, ignition of fog lights or distress, ... is received by the receiver 12 to which an external terminal has indicated, for example, that the vehicle takes the highway against sense, ... The following operation 36 consists in determining whether a danger has been detected.
Si tel est le cas, le système élabore, en 37, un message contenant, typiquement, les trois niveaux d'informations suivantes, décrivant les risques présentés par le véhicule :If this is the case, the system elaborates, at 37, a message containing, typically, the following three levels of information, describing the risks presented by the vehicle:
- nature du danger: véhicule d'urgence, véhicule en faute grave, véhicule en difficulté ;- nature of the danger: emergency vehicle, vehicle at serious fault, vehicle in difficulty;
- pour chaque type de danger ci-dessus, identification du danger :- for each type of danger above, identification of the danger:
. si véhicule d'urgence : véhicule de police, véhicule de pompiers, ambulance, ... ;. if emergency vehicle: police vehicle, fire engine, ambulance, ...;
. si véhicule en faute très grave : véhicule à contre sens, ... ; . si véhicule en difficulté : accident, freinage d'urgence, feux de brouillard, feux de détresse, véhicule au ralenti, ... ;. if vehicle in very serious fault: vehicle against direction, ...; . if vehicle in difficulty: accident, emergency braking, fog lights, hazard lights, idling vehicle, ...;
- pour chaque danger identifié, instructions à suivre : laisser passer, stop, go, ralentir, serrer à droite ou à gauche, ... .- for each identified danger, instructions to follow: pass, stop, go, slow down, tighten to the right or left, ....
Pour des véhicules dotés d'équipements plus sophistiqués, le message élaboré en 37 peut encore contenir les informations suivantes :For vehicles with more sophisticated equipment, the message developed in 37 may still contain the following information:
- direction du véhicule calculée par son GPS ou sa boussole électronique ;- direction of the vehicle calculated by its GPS or its electronic compass;
- vitesse du véhicule calculée par son GPS ou son tachymètre ;- vehicle speed calculated by its GPS or tachometer;
- position du véhicule calculée par son GPS. Le message ainsi préparé est alors émis en 38, de la même manière qu'en 34, tant que l'anomalie subsiste. L'émission peut aussi être arrêtée après quelques secondes si le conducteur du véhicule désactive le dispositif à l'aide du clavier ou, de manière automatique, lorsqu'après un arrêt, le véhicule redémarre.- position of the vehicle calculated by its GPS. The message thus prepared is then sent at 38, in the same way as at 34, as long as the anomaly remains. The transmission can also be stopped after a few seconds if the driver of the vehicle deactivates the device using the keypad or, automatically, when after a stop, the vehicle restarts.
Le dispositif passe ensuite au programme de réception dont la première opération 39 consiste à vérifier si un message a été reçu.The device then passes to the reception program, the first operation of which consists in checking whether a message has been received.
Lorsqu'aucune anomalie n'a été détectée en 36, le système passe immédiatement à l'opération 39. Si un message a été reçu, le système vérifie, en 40, que le message concerne bien le véhicule car sa direction risque de lui faire rencontrer le danger signalé. La vérification est faite sur la base des informations de position et de direction qu'il a reçues et qui lui sont propres. Il est inutile, en effet, d'alerter le conducteur d'un véhicule sur un danger qui, certes, est proche de lui mais qu'il ne risque pas de rencontrer.When no anomaly has been detected at 36, the system immediately proceeds to operation 39. If a message has been received, the system checks, at 40, that the message relates to the vehicle because its direction risks making it meet the danger. The verification is made on the basis of the position and direction information which it has received and which is specific to it. It is useless, in fact, to alert the driver of a vehicle to a danger which, of course, is close to him but which he is not likely to encounter.
Lorsque la vérification 40 est négative, le système revient au point de départ pour entamer un nouveau cycle.When check 40 is negative, the system returns to the starting point to start a new cycle.
Lorsqu'au contraire, la vérification 40 confirme que le message concerne bien le véhicule, l'opération suivante est, en 41 , la détermination de sa position et celle de la source qui émet le message suivie du calcul de la variation de la distance qui les sépare. Cette détermination de position peut se faire soit à l'aide des informations fournies par le GPS du véhicule soit par la mesure du niveau de réception du signal reçu.When, on the contrary, the verification 40 confirms that the message indeed relates to the vehicle, the next operation is, at 41, the determination of its position and that of the source which transmits the message followed by the calculation of the variation of the distance which separates them. This position determination can be done either using the information provided by the vehicle GPS or by measuring the reception level of the received signal.
Le système doit alors, en 42, à partir du calcul de variation de distance effectué en 41 , déterminer si le véhicule s'approche du danger et/ou si le danger s'approche de lui.The system must then, at 42, from the calculation of variation of distance carried out at 41, determine whether the vehicle is approaching the danger and / or if the danger is approaching it.
Si le véhicule est en train de s'éloigner du danger concerné, vu qu'il est inutile d'alerter son conducteur, le système revient au point de départ pour entamer un nouveau cycle. Si, au contraire, le véhicule est en train de s'approcher du danger, le système alerte son conducteur, en 43, en faisant apparaître sur l'affichage 17 un message correspondant aux informations reçues et, éventuellement, en actionnant l'alarme acoustique 18. L'opération suivante consiste à vérifier, en 44, si le message reçu signale une limitation de vitesse.If the vehicle is moving away from the danger concerned, since there is no need to alert its driver, the system returns to the starting point to start a new cycle. If, on the contrary, the vehicle is approaching danger, the system alerts its driver, at 43, by making appear on display 17 a message corresponding to the information received and, possibly, by activating the acoustic alarm 18. The next operation consists in checking, at 44, whether the message received indicates a speed limit.
Si ce n'est pas le cas, le système retourne à son point de départ.If not, the system returns to its starting point.
Si, en revanche, le véhicule arrive dans une zone à vitesse limitée, le système détermine, en 45, la vitesse du véhicule à l'aide de son GPS ou de son tachymètre puis, en 46, détermine si la vitesse imposée est respectée.If, on the other hand, the vehicle arrives in a limited speed zone, the system determines, at 45, the speed of the vehicle using its GPS or its tachometer then, at 46, determines if the speed imposed is respected.
Dans le cas où le véhicule respecte la vitesse imposée, le système retourne à son point de départ. Mais s'il y a excès de vitesse, un message d'avertissement est fourni, en 47, sur l'affichage 17 et/ou l'alarme acoustique 18, après quoi le système retourne à son point de départ. II peut être intéressant, pour un conducteur habitué à un trajet, de lui laisser la possibilité d'introduire dans le dispositif de son véhicule, par le clavier branché sur l'entrée 19, les instructions de désactivation nécessaires pour ne plus être importuné par certains messages émanant de dispositifs fixes signalant, par exemple, un virage ou un carrefour dangereux. Ainsi est proposé un système de prévention d'accidents, mais non répressif, permettant d'établir, entre deux dispositifs mobiles ou entre un dispositif mobile et un dispositif fixe, une communication filtrée et bien adaptée à la situation de chacun. Le système selon l'invention :In case the vehicle respects the imposed speed, the system returns to its starting point. But if there is speeding, a warning message is provided, at 47, on the display 17 and / or the acoustic alarm 18, after which the system returns to its starting point. It may be advantageous, for a driver accustomed to a journey, to allow him the possibility of introducing into the device of his vehicle, by the keyboard connected to the input 19, the deactivation instructions necessary so as to no longer be annoyed by certain messages from fixed devices indicating, for example, a dangerous turn or crossroads. Thus, an accident prevention system is proposed, but not repressive, making it possible to establish, between two mobile devices or between a mobile device and a fixed device, a filtered communication well suited to the situation of each. The system according to the invention:
- signale seulement les vrais dangers et élimine donc les messages relatifs à des dangers proches mais dont on est en train de s'éloigner ou qu'on ne rencontrera pas ;- signals only the real dangers and therefore eliminates messages relating to dangers which are close but which we are moving away from or which we will not encounter;
- fournit une information bien ciblée, c'est-à-dire sans bruit de fond, sur la nature de ce qui est " devant " et les mesures de sécurité à prendre. La sécurité des usagers de la route est, de ce fait, assurée de manière optimale. - provides well-targeted information, that is to say without background noise, on the nature of what is "in front" and the security measures to be taken. The safety of road users is therefore optimally ensured.

Claims

REVENDICATIONS
1. Système de prévention d'accidents, caractérisé en ce qu'il est constitué d'une pluralité de dispositifs, fixes ou placés dans un véhicule, capables de communiquer entre eux et comportant chacun une mémoire et un microprocesseur programmé pour commander les opérations suivantes :1. Accident prevention system, characterized in that it consists of a plurality of devices, fixed or placed in a vehicle, capable of communicating with each other and each comprising a memory and a microprocessor programmed to control the following operations :
- s'il est fixe, émission d'informations contenues dans sa mémoire, relatives à la présence d'un danger,- if it is fixed, transmission of information contained in its memory, relating to the presence of a danger,
- s'il est placé dans un véhicule :- if it is placed in a vehicle:
. réception des informations émises par d'autres dispositifs, . vérification que les informations reçues concernent bien le véhicule,. reception of information sent by other devices,. verification that the information received relates to the vehicle,
. signalisation de ces informations à son conducteur, . détection d'anomalies signalées par le véhicule lui-même, . détection d'anomalies reçues d'autres dispositifs, et . émission d'informations relatives au danger que présente le véhicule et comprenant des informations contenues dans sa mémoire, des informations relatives aux anomalies signalées par lui-même et des informations relatives aux anomalies reçues d'autres dispositifs. . signaling of this information to its driver,. detection of anomalies reported by the vehicle itself,. detection of anomalies received from other devices, and. emission of information relating to the danger presented by the vehicle and comprising information contained in its memory, information relating to the anomalies reported by itself and information relating to the anomalies received from other devices.
2. Système selon la revendication 1 , caractérisé en ce que les informations contenues dans la mémoire du dispositif fixe comprennent la nature du danger, sa position et l'attitude à adopter.2. System according to claim 1, characterized in that the information contained in the memory of the fixed device includes the nature of the danger, its position and the attitude to be adopted.
3. Système selon la revendication 2, caractérisé en ce que les informations contenues dans la mémoire du dispositif fixe comprennent, en plus, la date et l'heure auxquelles le danger est effectivement présent.3. System according to claim 2, characterized in that the information contained in the memory of the fixed device further comprises the date and time at which the danger is actually present.
4. Système selon la revendication 3, caractérisé en ce que lesdites informations sont émises seulement si elles correspondent à un danger existant effectivement à l'instant présent.4. System according to claim 3, characterized in that said information is transmitted only if it corresponds to a danger actually existing at the present time.
5. Système selon la revendication 1 , caractérisé en ce que les informations émises par le dispositif placé dans un véhicule comprennent : - la nature du danger,5. System according to claim 1, characterized in that the information emitted by the device placed in a vehicle includes: - the nature of the danger,
- pour chaque type de danger, son identification, et- for each type of danger, its identification, and
- pour chaque danger identifié, les règles de sécurité à observer.- for each identified hazard, the safety rules to be observed.
6. Système selon la revendication 5, caractérisé en ce que les informations émises par le dispositif placé dans un véhicule comprennent l'indication qu'il est en difficulté.6. System according to claim 5, characterized in that the information emitted by the device placed in a vehicle includes the indication that it is in difficulty.
7. Système selon la revendication 6, caractérisé en ce que les informations émises par le dispositif placé dans un véhicule comprennent, en plus, l'indication qu'une faute très grave a été commise par son conducteur. 7. System according to claim 6, characterized in that the information emitted by the device placed in a vehicle includes, in addition, the indication that a very serious fault has been committed by its driver.
8. Système selon l'une des revendications 6 et 7, caractérisé en ce que les informations émises par le dispositif placé dans un véhicule comprennent, en plus, sa position, sa direction et sa vitesse.8. System according to one of claims 6 and 7, characterized in that the information transmitted by the device placed in a vehicle further comprises its position, its direction and its speed.
9. Système selon la revendication 1 , caractérisé en ce que l'émission d'informations par le dispositif placé dans un véhicule est stoppée lorsque celui-ci passe de l'arrêt à la marche.9. System according to claim 1, characterized in that the transmission of information by the device placed in a vehicle is stopped when it passes from stopping to walking.
10. Système selon la revendication 1 , caractérisé en ce que l'affichage de certaines informations par le dispositif placé dans un véhicule peut être désactivé par son conducteur.10. System according to claim 1, characterized in that the display of certain information by the device placed in a vehicle can be deactivated by its driver.
11. Système selon la revendication 1, caractérisé en ce que l'opération de vérification des informations reçues par le dispositif placé dans un véhicule consiste à déterminer qu'il s'approche effectivement du danger signalé.11. System according to claim 1, characterized in that the operation of verifying the information received by the device placed in a vehicle consists in determining that it is effectively approaching the danger signaled.
12. Système selon la revendication 11 , caractérisé en ce que l'opération de vérification des informations reçues par le dispositif placé dans un véhicule consiste à déterminer s'il respecte la limitation de vitesse en vigueur. 12. System according to claim 11, characterized in that the operation of verifying the information received by the device placed in a vehicle consists in determining whether it respects the speed limit in force.
PCT/CH2003/000711 2002-11-19 2003-10-30 Accident prevention system WO2004047045A1 (en)

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