WO2008125284A2

WO2008125284A2 - System for object tracking and for controlling the state of the object

Info

Publication number: WO2008125284A2
Application number: PCT/EP2008/002868
Authority: WO
Inventors: Iakov E. Miller; Kirill A. Korolev; Dmitri A. Maksimov; Radik G. Ismagilov
Original assignee: Academy Mbf
Priority date: 2007-04-12
Filing date: 2008-04-11
Publication date: 2008-10-23
Also published as: RU2319215C1; WO2008125284A3

Abstract

The invention relates to a system for object tracking and for controlling the state of the object. For this purpose the invention provides that said system is equipped with a unit for receiving and transmitting data signals, a memory unit, an internal clock, a unit for receiving sender signals, a unit for controlling the control equipment, a decision unit, a unit for zone classification and comparing the processes, and a tuning unit, wherein the memory unit is connected to the unit for zone classification and comparing the processes and to the tuning unit, the internal clock is connected to the unit for zone classification and comparing the processes, to the unit for receiving the sender signals and to the tuning unit, the unit for receiving the sender signals is connected to the unit for zone classification and comparing the processes and to the tuning unit, the decision unit is connected to the unit for controlling the control equipment, to the unit for zone classification and comparing the processes and to the tuning unit, and the unit for receiving and transmitting the data signals, the unit for receiving the sender signals, the decision unit, and the unit for controlling the control equipment are configured with the possibility of direct connection to the units interacting with the system. In this manner a quick and autonomous control of the state of the object, on which the system is disposed, can be carried out without waiting for the receipt of the information from an external source of the commands and of the control data.

Description

System for object tracking and control of the object state

The invention relates to a system for object tracking and for controlling the state of the object. The system concerns the tracking technique which tracks mobile and stationary objects and serves to remotely control their condition. This system can e.g. be used to track vehicles and gas station status control.

The known tracking systems are integrated into the tracking objects and include:

1 transmitter,

2 systems for receiving and transmitting the signals and commands,

3 means of analysis and data processing,

BESTAETIGUNGSKOPIE 4 control organs, which make it possible to determine the coordinates of the objects to be tracked. For example, the information of the navigation signals, which are received by the satellites of the global system of radio navigation (GPS), and / or the image of the mobile radio field are needed. The controllers also allow the generation of a data packet and the processing of this information according to the default program.

In this case, the structural structures of the known tracking systems differ from each other by the common composition of the functional electronic assemblies.

The tracking system known from the application US 2002/0156576 A, G01C 21/00, 24.10.2002 contains a cylindrical body with a removable cap. The discs are provided with an antenna, feed and electronic assembly and are mounted within the body on the insulating base by means of supports.

As the closest prior art to the pending invention, the known from the application GB 24 17 118 A, G08G 1/123, 15.02.2006 tracking system is considered. Within the body with a removable cap, a frame with antennas and a rechargeable battery, as well as a printed circuit board with the electronic components and a plug-in base element are installed. In addition, a vertical level is provided in the body of this tracking system, which moves over a slide rail.

The shortcomings of the known methods of object tracking and the control of the object state and the tracking systems are that it is not possible: 1 to record the events with different complexity levels. This necessitates the inefficient consumption of the own energy information resources of the tracking systems located on the tracking objects;

2 quickly and autonomously / independently to control the state of the object on which the tracking system is located;

3 to make a multi-stage and the current object state adaptation of the tracking system, including independently;

4 reduce the amount of information transmitted over the transmission channel while preserving information security and reducing the exchange traffic overhead.

In addition, the disadvantages of the known tracking systems are related to insufficient vibration resistance, impact resistance and ease of repair of the designs. Another shortcoming of these tracking systems is their essential operating unfriendliness.

It is an object of the invention to provide a system of the type mentioned above, which allows a timely, fast and autonomous control of the state of the object on which the system is as a tracking system, and an ongoing adaptation of the system to the object state designed the information transmitted via the transmission channels and the consumption of own energy information resources is reduced.

The object of the invention is solved by the features of claim 1.

With this structure, the object tracking system for controlling the state of the object ensures certain technical results.

This system includes as a tracking system: - functional electronic assemblies:

a unit for receiving and transmitting the data signals,

a storage unit,

- an indoor clock,

an assembly for receiving encoder signals,

a control unit for the control devices,

- a decision-making unit,

a unit for zoning and comparison of processes and

- a voting unit.

The system is improved according to developments according to the subclaims. This increases the tracking system efficiency by increasing vibration resistance, impact resistance, and ease of repair, as well as reducing the time required for system operation. In particular, this amount of time includes changing the system configuration according to the algorithm of the problem to be solved, the repair and diagnostic work, and reinstalling the system on the tracking object, taking into account the best possible rational variant of its arrangement.

The following exists:

- a housing with end covers;

- a motherboard with electronic sub-assemblies;

- Arrestierungen, which are arranged at least on one side of the motherboard and designed as components of the electrical connector;

additional detents (at least two pieces) which are arranged normal to the motherboard, at least on one side of said board, and which correspond to the shape of the printed circuit boards with the counterparts of the electrical connectors have bonds. These counterparts of the electrical connectors are located on one of the longitudinal end faces. They are coordinated with the corresponding elements of the electrical connectors on the motherboard;

- All sides of the housing inner surface contain the long grooves on the entire length on each side. One of the end covers of the housing is designed with the circumferentially arranged paragraphs. The end cover on the other side of the case is smooth;

- The motherboard is designed so that it can interact with the end faces, with the smooth surfaces of the end covers of the housing, with the heels of one of the end covers and with the grooves of the housing inner surface;

- The additional locks are designed so that their longitudinal end faces with the housing grooves and with the transverse end faces -. can cooperate with the smooth surface of a housing end cover and the smooth surface and the heels of the other housing end cover;

- The motherboard is installed in such a way that it can be installed by rotating it around the mutually normal axes. These axes run through the geometric center of the motherboard. The end covers of the housing are also executed with the possibility of re-installation;

- The above-mentioned functional electronic assemblies are installed on the side surfaces of the additional detents.

The invention will be explained in more detail with reference to an embodiment shown in the drawings. Show it:

Fig. 1 is the functional diagram of the system for object tracking and for controlling the object state; Fig. 2 is an overall view of the system and Fig. 3 shows the variants of the system in the housing.

The system according to the invention contains the following functional electronic assemblies: unit 1 (FIG. 1) for receiving and transmitting the data signals, memory unit 2, internal clock 3, unit 4 for receiving encoder signals, unit 5 for controlling the control units, decision unit 6, unit 7 for zone classification and for comparison of the processes and voting unit 8. In an emergency, all electronic units 1 to 8 of the tracking system can be connected to the internal power supply 9.

The system also includes:

1 housing 10 (Figure 2) with end caps 11 and 12,

2 motherboard 13 with electronic sub-assemblies,

3 detents, which are installed at least on one side of the motherboard 13 and have the shape of the elements 14 of the electrical connector,

4, the additional detents 15 (at least two pieces), which are arranged perpendicular to the motherboard 13 and that at least on one side of this board and which have the shape of the boards with the counterparts 16 of the electrical connector. In this case, the counterparts 16 of the electrical connectors 14 are located on one of the longitudinal end faces 17, and their coordinates are adapted to the coordinates of the corresponding elements of the electrical connectors 14 on the motherboard 13.

The electronic units 1 to 8 are arranged on the side surfaces of the additional detents 15. All sides of the housing inner surface 10 include the longitudinal grooves 18 (Figure 3) over the entire length of each side. The end cover 11 is formed on one side with the circumferentially arranged shoulders 19, and the other end cover 12 is smooth. The motherboard 13 is installed with the possibility of re-installation. The end covers 11 and 12 are executed uminstallierbar. At least two additional detents 15 are arranged perpendicular to the motherboard 13 and that at least on one side of this board. The end surfaces of the motherboard 13 cooperate with the smooth surfaces of the end caps 11 and 12, with the paragraphs 19 of the end cover 11 and the grooves 18 of the housing inner surface 10. The longitudinal end faces of the additional detents 15 cooperate with the grooves 18 of the housing 10. The transverse end faces of the additional latches 15 cooperate with the smooth surface of the end cover 12 and with the smooth surface and shoulders 19 of the end cover 11. The coordinates of the arrangement of the elements of the electrical connectors 14 are located on the front and the back of the motherboard 13. They are adapted to the coordinates of the arrangement of the counterparts 16 of the electrical connectors 14, which are located on the additional latches 15. In this case, these additional locks on the front and back sides of the motherboard 13 are arranged. The end covers 11 and 12 contain the procedural holes 20 and 21. These holes allow the connection of the tracking system to the devices cooperating with this system. Such devices include encoders, radiators and radiation receivers, connectors, microphone, speakers, a display, actuators, and other devices.

During the tracking of the objects and the control of their condition, the mapping of the surfaces of the possible arrangement or the repositioning of the tracking objects as well as the division of these surfaces into the zones is undertaken. The zoning is done by the operator by means of the choice of coordinates active and / or passive zones according to the totality of the simple and complicated events predicted in these zones.

The zones are formed as the entirety of the circles with the variable or constant coordinates of their centers and / or as rings with the variable or constant coordinates of their centers and the variable or constant inside and outside radiuses and / or as polygons with any number of sides.

Then one or the other zone is assigned to each tracked object to be monitored. The operator and / or the tracking system chooses the set of informative features that characterize the possible event for each of the tracking objects. In the course of the vote, the minimum value of the successive confirmations of the crossing of the outer boundaries of the zones by the object is determined. The zones have the shape of the rings and / or the polygons. For each object, comparison models of the processes (scenarios) of its possible movements or states are determined. At least three is selected as the minimum value of the above-mentioned successive confirmations of the crossing of the outer boundaries of the zones by the object within a specified period of time.

During the tracking of the object, the encoder signals and the time parameters for the specified functional operation of the tracking system are registered and processed by means of the transmission paths of the tracking system.

The multi-stage and the current object state corresponding adjustment of the tracking system is made by means of the fast vielparametrischen vote. The multi-stage adaptation of the tracking system is carried out independently by means of the tracking system or the external sources of the commands and / or the control data. Then, the control commands are formed and the transmission and / or reception of the data signals is performed. The transmission and / or reception of the data signals via the transmission channel between the command and / or the control data source and the tracking system and between the tracking system and the monitoring console are carried out by means of the emitter and / or the radiation receiver and / or by means of a telecommunication line.

Then the processes of the registered movements of the objects and their states are compared with the basic processes. If the zones of the mapped areas having the shape of rings and polygons are present, the number of registered successive confirmations of zone boundary crossings by the object is also compared to its selected minimum value. Based on the results of the comparison, the final decision will be taken to send the respective message. The message concerns the crossing of the zone boundaries by the object; and / or the change of the basic flow of object movements or their state (this information is passed to the outside information receivers); and / or changing the tuning parameters of the tracking system. In addition, the decision is made on the transfer of the tax messages to the tracking object. The control messages then block the functional operation of the object.

Depending on the results of the tracking and if the situation develops after a non-preprogrammed process (eg if the number of registered consecutive confirmations of the crossing of the zone boundaries by the object exceeds the norm), operational or technical measures will be taken exclude the further development of the unprogrammed process. The tracking system performs the zone classification and compares the processes of the object movements and the object state. When the tracking system executes the cartographic zone classification algorithms, the zone classification unit 7 and the operations comparison unit 7 receive the current coordinates of the tracking object location and process these coordinates. The unit 7 also checks whether these current coordinates of the object are located in each of the active zones of this tracking system (for each object). It stores the registered crossings of the zone boundaries through the object within several periods of registration of its current coordinates. Thereafter, the above-mentioned unit 7 forms the message about the safe crossing of the boundaries of the active zones by the tracking object. When the tracking system compares the operations of the state change of the tracking objects, the zone dividing unit 7 and the comparison of the processes receive the indications from the transmitter 4 receiving unit 4. It compares the actual procedure of the state change of the object on which the tracking system is located with the active comparison models of the sequences. The unit 7 also processes the entirety of the characteristics corresponding to the registered actual operations. With simultaneous zoning and comparison of the processes of the tracking system takes the unit 7 for zoning and to compare the processes before the receipt and the processing of the current coordinates of the object location. It checks whether these running coordinates of the object are in each of the active zones of this tracking system (for each object) and stores the registered crossings of the zone boundaries of the object within several periods of registration of its current coordinates. Then, the above-mentioned unit 7 forms the message about the safe crossing of the boundaries of the active zones by the object and receives the information from the unit 4 for receiving transmitter signals. It compares the actual course of the state change of the object on which the tracking system is located with the active comparison models of the sequences, and also processes the totality of the characteristics which correspond to the registered actual position. corresponding processes. The reference tracks (pattern trajectories), reference runs (patterns), zone parameters and thresholds of the encoders 32 are specified by the internal settings of the tracking system or by external control commands.

During the function of the tracking system, the voltages are supplied from the outputs of the encoders to the unit 4 for receiving encoder signals. If necessary, in this unit 4, the analog-to-digital conversion and the comparison with the thresholds takes place. Thereafter, the necessary processing of the signals received from the encoders is made. The values of the function arguments of the processing of the encoder display values in the unit 4 can be changed.

The unit 7 receives the data from the unit 1 for receiving and transmitting the data signals. At the same time, the unit 7 for zone classification and for the comparison of the sequences exchanges the data with the memory unit 2 in order to record, change or delete the zone parameters and the run-off parameters. In response to the special commands from the command source or / and the control data, the tracking system allows the reading of the already preset parameters.

The radiation receiver or the connector (s) send the commands and / or control data in one of the particular formats to the unit 1 for receiving and transmitting the data signals. The radiator (s) and the radiation receiver and / or the connector (s) of the external connection of the tracking system are used to operate the tracking system in various modes, including commissioning and adjustment, maintenance and diagnostics. The unit 1 generates the data coding sequences for the transmission of this data by the radiator (the radiator) or the connector (s) to the Outdoor receiver (s) of the information. In the unit 1 for receiving and transmitting the data signals, the format of the data and command coding sequences and the protocol of the information exchange are defined. A variety of the encoding sequence and information exchange protocol format may be determined by the tracking system's interior settings or the outer-order coding sequences. The unit 1 for receiving and transmitting the data signals recognizes the commands which are intended for the setting devices of the tracking object. It transmits these commands to the control unit 5. The unit 1 also recognizes the commands for the unit 4 for receiving transmitter signals and transmits these commands to the unit 4. The unit 1 for receiving and transmitting the data signals contains a speech communication module, which to the radiator and the radiation receiver, to the connector ( the connectors), the microphone and the speaker are connected.

The decision unit 6 receives the signals from the zone classification unit 7 and for comparison of the sequences and from the unit 1 for receiving and transmitting the data signals. It transmits these signals to the actuator control unit 5 and to the display according to the predetermined operating configuration of the tracking system. In addition, the unit 6 forms the information in accordance with which the tracking system transmits the messages to the monitoring console (the consoles). The module for setting the operating modes of the tracking system in the unit 8 to vote receives from the unit 1 for receiving and transmitting the data signals the command on the implementation of the tracking system in the predetermined mode. These modes include: "Standard Tuning", "Energy Saver", "Remote Tuning", "Navigation Mode", "Stationary Object", etc. The Tuning Unit 8 registers, changes or clears the tuning parameters, the zone parameters and the flow parameters by reading the data from the Unit 1 for receiving and / or for Transmission of data signals receives. The voting unit 8 transmits the tuning parameters, the zone and sequence parameters to the transmitter signal receiving unit 4, to the zone classification unit 7 and to the comparison of the operations, to the decision unit 6 and to the unit 1 for receiving and transmitting the data signals.

The voting unit 8 also receives the data from the unit 1 for receiving and transmitting the data signals and reads the tuning parameters, the necessary zone and sequence parameters via the memory unit 2 of the tracking system. In response to the special commands, the voting unit 8 ensures the reading of the parameters already present therein. The tuning is done by means of the internal settings of the tracking system independently or via the outer coding sequences. The following reconciliation types are executed:

1 tuning the operating mode of the entire tracking system;

2 tuning of unit 4 to receive encoder signals;

3 coordination of unit 7 for zone classification and comparison of the procedures;

4 Tuning of the unit 1 for receiving and transmitting the data signals.

The memory unit 2 ensures the processing, the inclusion in the internal memory of the tracking system, the reading and erasing from the memory of the respective data. These data include both the data which characterize the function of the object equipped with the tracking system and the data necessary for the zone classification and the run-time comparison. The inner clock 3 is readjusted by the external control signals. The inside clock 3 ensures the transmission of the date and times to the interface board for receiving and transmitting the data of the unit 1 for receiving and transmitting the data signals. For periodic readjustment of the inner clock 3 by means of the external signals, signals are generated which are transmitted via the connection. line of the internal clock 3 and the unit 1 for receiving and / or transmitting the data signals are transmitted. The encoder signal receiving unit 4 transmits the display values of the encoders disposed on the tracking object to the data receiving and transmitting interface assembly in the unit 1. The data flows are formed by synthesizing the data. In this case, these data come from the radiation receiver, the unit 4 for receiving transmitter signals, the inside clock 3, the interface assembly for receiving and transmitting the data in the unit 1. The memory unit 2 processes the above-mentioned data flows, takes them into the storage unit of the tracking system on, reads the data from the storage unit or transmits it by means of the radiator or the plug-in (the connectors).

The information formed in a predetermined manner, received from the inputs of the radiation receiver or the connector (s), is transmitted to the zone classification unit 7 and for comparison of the operations of the interface unit to receive and transmit the data of the unit 1.

The decision unit 6 also sends the signals to the module for generating the output messages. These signals control the transmission of the short messages to the outside receivers. The zone dividing unit 7 and the comparison of the sequences receive the data from the unit 1 for receiving and transmitting the data signals and from the unit 4 for receiving encoder signals. It performs the zoning and the comparison of the processes in accordance with the tuning signals sent from the voting unit 8. The zone classification unit 7 and the comparison of the sequences receive the parameter values of the active cartographic zones and the active sequences of the object state from the memory unit 2. The tracking system sets the reading of the predefined zone and parame- ter parameters in response to the special commands of the command source.

The decision unit 6 receives the signals from the zone classification unit 7 and for comparison of the sequences and from the unit 1 for receiving and transmitting the data signals. According to these data signals, the signals are transmitted to the actuator control unit 5 and to the display. The decision unit 6 also forms the data according to which the tracking system transmits the messages to the outside receivers (eg to the monitoring console). In the module for event evaluation of the decision unit 6, the results of the zone classification and the comparison of the processes are processed. In this case, the values of the function arguments of the processing are sent by the voting unit 8. According to the requirements of the selected setting, the results of this editing can be displayed.

In the course of repair and diagnostic work, as well as changing the configuration of the systems in accordance with the algorithm of the problem to be solved, the operator performs the following operations:

The additional electronic units are built on the motherboard 13. These components are the necessary components for any configuration of the tracking system. Thereafter, depending on the particular variant of the selected tracking algorithm, the specific entirety of the electronic units 1 to 8 is determined. This ensemble ensures execution of the chosen algorithm. The electronic units 1 to 8 are, as already mentioned, arranged on the side surfaces of the additional detents 15. These locks have the shape of the motherboard. Depending on the tracking algorithm to be performed, the number of additional detents 15 with the electronic units 1 to 8 arranged thereon may be different, but it must be minimized. at least two pieces. They can be arranged both on one side of the motherboard 13 and on its two sides. The additional detents 15 are installed on the motherboard 13 by means of the assembly of the elements 14 of the electrical connectors of the motherboard 13 and the counterparts 16 of the electrical connectors located on one of the longitudinal end faces 17 of the additional detents 15. An incorrect installation of each of the additional detents 15 on the motherboard 13 is excluded because the coordinates of the installation of the elements 14 of the electrical connector located at the front and back of the motherboard 13, with the coordinates of the counterparts 16 of the connector, the are on the additional latches 15 are linked, ie these coordinates are adapted to each other.

Thereafter, the motherboard 13 is mounted with the mounted thereon additional detents 15 in the housing 10. The housing 10 is closed with the end covers 11 and 12. The accuracy of installation and attachment of the motherboard 13 in the housing 10 is achieved in that the end faces of the motherboard 13 with the smooth surfaces of the end covers 11 and 12, the paragraphs 19 of one of the end covers and with the grooves 18 of the inner surface of the housing 10 cooperate. The longitudinal end faces of the additional detents 15 cooperate with the grooves 18 of the housing 10. The transverse end surfaces of the additional detents 15 cooperate with the smooth surfaces of the end caps 11 and 12 and with the shoulders 19 of the end cap 11.

When constructing the housing 10 of the tracking system on the tracking object, the optimum variant of the arrangement is selected. The following factors are considered in the selection: the convenience of the arrangement and the operation, the free space, the accessibility and the possibility of concealed installation or repositioning of the tracking system. Provided that the optimal variable Given the arrangement and mounting of the housing 10 on the tracking object, it is possible to reposition the motherboard 13 in the housing 10 by means of its rotation about the mutually normal axes. In this case, these axes pass through the geometric center of the motherboard 13. Then the end covers 11 and 12 are reinstalled.

The connection of the tracking system to the cooperating devices is made on the basis of the connecting elements and the manufacturing grooves 20 and 21. The grooves 20 and 21 are formed in the end caps 11 and 12. The cooperating devices include the transmitter, the radiator and the radiation receiver, the connector, the microphone, the speaker, the display, the actuators and other devices.

The use of the filed invention enables the following:

Fig. 1 shows the fast and autonomous control of the state of the object on which the tracking system is located (without expectation of receiving the information from the outside source of the commands and the control data). This includes inter alia the comparison of the actual distance of the object movement and / or its state with the predetermined distance and / or with its nominal state. It also allows a quick transfer of information about the possible deviations;

2 the processing of the information of various complexity levels. Due to the a priori information, the list of active events that have to be processed and analyzed can be specified. This causes (but only when the simplest events are processed) the saving of the tracker's own energy information resources that is on the tracking object is located;

3 the adjustment of the tracking system corresponding to the multi-level and the current state of the object, including the independent adaptation;

4 the reduction of the amount of information sent over the transmission channels in accordance with the settings selected by the user and the optimal operating mode of the tracking system with simultaneously high security of the transmitted information as well as the reduction of the effort in connection with the exchange traffic.

In addition, the new system has high vibration resistance and impact resistance. This involves increasing the efficiency of tracking system operation on different objects and solving tasks that execute the tracking algorithms and control the state of the objects. Operating the tracking system, changing its configuration according to the algorithm of the problem to be solved, performing repair and diagnostic work, and repositioning the tracking system on the tracking object, taking into account the best possible rational arrangement, substantially reduces the operator's working time.

Claims

A system for object tracking and control of the object state, characterized in that it comprises a unit (1) for receiving and transmitting data signals, a memory unit (2), an indoor clock (3), a unit (4) for Reception of transmitter signals, a unit (5) for controlling the control devices, a decision unit (6), a unit (7) for zone classification and for comparing the processes and a tuning unit is provided that are connected to each other:

a) the storage unit (2) with the unit (7) for zone classification and comparison of the processes and with the tuning unit (8), b) the inner clock (3) with the unit (7) for zone classification and for comparison with the Unit (4) for receiving the encoder signals and the tuning unit

(8), c) the unit (4) for receiving the encoder signals with the unit (7) for zone classification and for comparing the sequences and with the tuning unit (8), d) the decision unit (6) with the unit (5) Control of the adjusting devices, with the unit (7) for zone classification and for comparing the sequences and with the tuning unit (8),

and that the unit (1) for receiving and transmitting the data signals, the unit (4) for receiving the encoder signals, the decision unit (6) and the unit (5) for controlling the adjusting devices with the possibility of connection directly to the with System cooperating devices are executed.

2. System according to claim 1, characterized in that the above-mentioned devices include transmitter, emitter and a radiation receiver, plug, microphone, speakers, a display, adjusting devices and a separate power supply.

3. System according to claim 1 and 2, characterized in that a housing (10) with end covers (11, 12) is provided which receives a motherboard (13) with electronic auxiliary modules that at least on one side of the motherboard (13) detents (15) are arranged, which are formed as components (14) of the electrical connectors, and that additional detents (15) (at least two) are arranged perpendicular to the motherboard (13) on at least one side of the motherboard (13) and the Contain counterparts (16) of the connectors.

4. System according to claim 3, characterized in that the counterparts (16) of the electrical connectors (14) on one of the longitudinal end faces (17) of the motherboard (13) are mounted and that the coordinates of these counterparts (16) with the coordinates of the corresponding Match elements (14) of the electrical connectors (14).

5. System according to any one of claims 1 to 4, characterized in that all sides of the housing inner surface (10) over the entire length with longitudinal grooves (18) are provided that an end cover (11) of the housing (10) with circumferentially arranged paragraphs (19) is provided and the other housing end cover (12) is smooth and that the motherboard (13) is so off is formed so that it cooperates with the end faces, the smooth surfaces of the end covers (11, 12) of the housing (10) with the shoulders (19) of the end covers (11, 12) and with the grooves (18) of the housing inner surface (10)

A system according to any one of claims 3 to 5, characterized in that the detents (15) are formed so as to engage with their longitudinal end faces (17) with the housing grooves (18) and with the transverse end faces, i. with the smooth surface of a housing end cover (11) and the smooth surface and the other housing end cover (12) cooperate.

7. System according to one of claims 3 to 6, characterized in that the motherboard (13) is formed so that it can be re-installed by rotation about the mutually perpendicular axes, said axes passing through the geometric center of the motherboard (13) ,

8. System according to one of claims 3 to 7, characterized in that the end covers of the housing (10) are uminstallierbar.