JPS6119459B2 - - Google Patents

Description

[Detailed description of the invention]

The invention has a sensor for monitoring the operating state of the vehicle and is operatively connected to a display device via an evaluation device, and a multiplexer for periodically detecting the sensor, in which case a fault signal is displayed on the display device. The present invention relates to a device for monitoring a vehicle. Modern vehicles are equipped with several monitoring sensors to ensure their safety and operational readiness. Recent trends require continuous monitoring of rapidly worn and worn parts at relatively large inspection intervals. Furthermore, the hitherto dominant mechanically constructed devices, such as fuel injection systems, ignition systems, automatic transmissions and anti-lock devices, are increasingly being replaced by electrical systems. Its electrical configuration has the advantage of simplifying testing. Unlike factory inspections, vehicle monitoring reports important operating data to the driver, provides timely warnings before a dangerous situation occurs, especially when various failures appear at the same time, and helps the driver make decisions on appropriate measures. It should be done as follows. It is important here that the information is transmitted to the driver in an ergonomically convenient manner: That is, the driver should be distracted from the traffic situation to a minimum and avoid confusion from additional burdens, such as information overload. Up to now known devices for the monitoring of vehicles or vehicle parts and operating conditions mostly use luminescent panels for the indication of occurring faults, in the case of which panels many partial surfaces contain symbols or texts. is displayed. The driver of the vehicle must then make an appropriate decision based on the easily confusing surface of the panel, and is often confused, especially in the case of simultaneous notifications, which has an adverse effect on the traffic situation. The problem underlying the invention is to develop a device for the monitoring of vehicles, which avoids the above-mentioned drawbacks and which provides the driver of the vehicle with reliable information about the road safety and operational safety of the vehicle. The objective is to provide drivers with information so that they are not confused by a variety of information. The device should furthermore be able to operate as safely and reliably as possible under severe vehicle operation, and should also be simple and inexpensive in construction;
As a result, it can be installed even in low-priced vehicles. This problem is solved by the present invention as follows. That is, the fault signals evaluated according to their priorities are outputted at the output of the output storage connected downstream of the multiplexer, the most severe fault signal being evaluated first among the fault signals evaluated according to their priorities. It has a confirmation switch that clears the display of the most serious fault signal, and when the confirmation switch is activated, the display of the fault signal is cleared and the periodic detection of subsequent sensors is cleared. This is done for the remaining sensors excluding the sensor associated with the fault signal. Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a system of devices for monitoring vehicles. The different sensors 10, 11, only two of which are shown for clarity, provide fault signals that are prioritized according to the order of their terminals, the sensors 10, 11 being multiplexed by a multiplexer 12. Detected at the timing of The multiplexer 12 is a fault signal processing device 13
The display device 14 is connected to a display device 14, which issues a warning about each fault according to the degree of risk of the detected fault and displays each fault, for example, as text. In order to avoid placing undue demands on the vehicle driver in the event of a large number of malfunctions, thereby unfavorably affecting the traffic situation, the display only indicates the most serious malfunction at any given time. do. This means that the multiplexer calls the sensors 10, 11, etc. until the multiplexer finds one fault. In FIG. 1, it is assumed that this serious failure occurs, for example, at the connection terminal of the rotary selection switch in the illustrated position. Thereafter, the detection cycle does not proceed to sensors or measurement positions that have a lower significance than the detected fault signal, and multiplexer 12 to the sensors with higher priority, which have a higher significance than the already detected fault signal. Alternatively, the measurement position is detected according to the detection cycle shown at 15. When the driver of the vehicle sees the malfunction on the display device, the driver can operate the confirmation switch 16;
This allows the driver to signal that the fault has been confirmed. Upon actuation of the confirmation switch 16, the display on the display 14 disappears and the detection cycle of the multiplexer 12 is put back into operation, ignoring the detected fault. For example, if a second fault signal is present at the lateral fixed position 17, the multiplexer 12
moves to this measuring position 17 and indicates this fault on the display. At the same time, the detection cycle does not detect faults of lower priority than the detected fault signal, and multiplexer 12 operates in the detection cycle indicated at 18. By operating the confirmation switch 16 again, the display on the display device is erased again, and the above process is repeated until the entire detection cycle has completed one cycle. The most serious fault will then automatically appear again on the display. FIG. 2 shows a block diagram of a monitoring device, hereinafter referred to as a monitoring computer. Sensors 10 and 11, only two of which are shown for reasons of clarity, are connected to a multiplexer 12 via a decoupling device 19 with a limit trigger and a fault simulation circuit arrangement 20, for example. A decoupling device 19 is used to insulate the monitoring computer from interference signals. Multiplexer 12 is counter 2
1, the counter controls the confirmation storage 22 and the output storage 23. The fault simulation circuit arrangement 20, the multiplexer 12, the counter 21, the output memory 23 and the verification memory 22 are then controlled by a controller 24, which forces a synchronous operation. The monitoring calculator of FIG. 2 operates as follows. Sensors 10 and 11 supply signals to multiplexer 12 via a decoupling device 19 and a fault simulation circuit arrangement 20. These signals or sensors 10 and 11 are connected to multiplexer 12
Detected periodically by The multiplexer 12 is controlled by a counter 21, which is operated by a counting clock supplied by a controller 24. The multiplexer 12 is the sensor 10,
11, the detection cycle of multiplexer 12 does not detect faults of lower priority than the detected fault signal.
The detected faults are fed via the controller 24 to the output store 23 . The output storage 23 is connected in accordance with FIG. 1 with a display device, on which the fault message appears in the form of clear text. Therefore, only faults with a higher priority than this fault can be detected by multiplexer 12. In this case, when one such high-priority fault is detected, the display device 14 is automatically erased and the high-priority fault is displayed. If the confirmation switch 16 of FIG. 1 is actuated when a fault is indicated, a confirmation signal is stored in the confirmation memory 22 via the controller 24, with the counter 21 determining the storage location. After storing the confirmation signal, the display on the display is cleared and the sensing cycle of multiplexer 12 continues as described above. "Confirmation" as used herein means that the confirmation switch 16 is operated, and as a result, a confirmation signal is generated, and by this confirmation signal, the fault indication previously displayed on the display device 14 is erased. This shows that. Therefore, confirmation means confirming and erasing the previously displayed failure notification. For example, if a sensor for the engine temperature of a motor vehicle sequentially issues a fault signal at repeated intervals due to temperature fluctuations, this fault is first indicated via the display device 14. Then, confirm switch 16
If is operated, this display will be cleared. If no sensor failure signal occurs in the meantime, the output of the monitoring device is switched back to the good state. If a new fault signal occurs in the sensor due to an increase in engine temperature, the previously occurring confirmation signal (which erased the fault notification) is immediately erased in the confirmation memory 22. In this case, a new failure notification for engine temperature is displayed. However, if another fault with a higher priority occurs at the same time or earlier, this fault will be displayed. Counter 21 has two final counts. The first final count value is then used for limiting the detection cycle during operation of the vehicle, while the second final count value extends the detection cycle to detect further sensors or measurement positions. If the detection cycle is extended, sensors 25, 26 are provided,
These can give warning signals to the driver. These warning signals are, for example, notification signals about the condition of the brake linings of the vehicle brakes or of the oil in the engine. The signals in this case do not signify limit values; in the case of brake lining signals, a warning signal is emitted, for example, if the brake lining is less than 40% of its initial state. As a result, the vehicle driver is warned, for example before the start of a relatively long journey, of the possibility of a breakdown occurring during the journey. The longer sensing cycle involving sensors 25 and 26 is therefore used before the start of the trip. When the vehicle is started, the detection cycle is automatically switched to a short detection cycle, for example, by an electrical signal indicating the driving state of the vehicle. If there is no fault signal during the longer detection cycle and before the start of operation, a "normal" signal appears on the display 14 as a result of the action of the controller 24. This notification signal simultaneously indicates to the driver the normal operation of the monitoring computer. Via the fault simulation device 20, a fault signal for each measurement position triggered by the controller 24 can be simulated. A plurality of sensing cycles 15 and 18 are shown in FIG. 1 for multiplexer 12. In FIG.
At that time, the detection cycle of the multiplexer 12 is
It is limited by the fault signal of the sensor on or connected to the measuring position. sensor 1
0 is connected to a first measuring position of multiplexer 12, sensor 11 is connected to a second measuring position of multiplexer 12, and subsequent sensors are connected to subsequent measuring positions of multiplexer 12. Sensor 10 is then assigned the highest priority and sensor 26 is assigned the lowest priority. A fault simulation is initiated by device 20 (FIG. 2). Initially, a fault signal is applied via device 20 to all inputs of multiplexer 12 . However, the sensing cycle is initially limited to only the first measuring position, and a corresponding fault message appears on the display 14. Only when the confirmation switch 16 is actuated does this display disappear and the sensing cycle is extended to the second measuring position. The display device 14 includes
A fault signal now appears at the second measuring position.
When the confirmation switch 16 is operated anew, the display disappears and the detection cycle is extended to the next measurement position.
In this way, all measurement positions can be displayed sequentially. This type of test cycle allows the normal operation of the monitoring computer of FIG. 2 to be verified. In order to create a predetermined state inside the monitoring computer, a signal is activated from the controller 24 in accordance with the test cycle of the monitoring computer by means of the ignition switch-on of the vehicle, which signal is also applied to the confirmation memory 22. , erases the memory in the output memory 23, and resets the counter 21 to its initial position. FIG. 3 shows a detailed block diagram of the controller 24 according to FIG. The confirmation signal for erasing the display is the third one.
According to the figure, it is generated either from the confirmation switch 16 (FIG. 1) via terminal 45 or by a clock generator 46. This clock generator 46 is advantageous in the fault simulation described above. This is because the confirmation signal, which is formed as a clock pulse, makes it possible to avoid repeatedly operating the confirmation switch 16. For example, in the case of a fault simulation before the start of a trip, if the clock time of the clock generator 46 is of the order of a few seconds, a complete cycle of all measuring positions in the so-called display cycle is required by an additional actuation of the confirmation switch 16. You can speed it up. In FIG. 3, the input and output terminals correspond to the input and output terminals of the controller 24 of FIG. 2 and are designated by the same numbers. When the vehicle is switched on, a signal appears at the input terminal 27 of the controller 24. By switching on the corresponding ignition switch, the pulse generator 28 generates pulses which are fed via an OR gate 29 to a further OR gate 30 . The output side of the OR gate 30 is connected to the counter 2 via a terminal 31.
1 to the 0 position. Similarly, input terminal 32
If the test signal is supplied via the counter 21
will be reset. In this case, a pulse is generated in the pulse generator 33 at the rising and falling edges of the pulse, which pulse is transmitted to the counter 21 via the OR gate 29 and the OR gate 30 and the output terminal 31 connected to the output side of the OR gate 30. and reset this counter. The test signal is sent to the controller 24
, the switching device 35 is further operated via the OR gate 34. In a test cycle before the start of a trip, all sensors are tested. On the other hand, while the vehicle is running, the sensors 25 and 26, which are relatively less important, are not monitored.
Since the counter 21 controls the sensing cycle of the multiplexer 12, the counter must be configured to increase to a higher final count value in the pre-trip test cycle than during the trip. For this purpose, a switching device 35 (FIG. 3) is provided. As soon as the counter 21 reaches a predetermined higher final count value, the switching device 35 receives a pulse 1 signal from the counter 21 at its input in the upper part of the figure. When the counter 21 reaches a predetermined smaller final count value, a pulse 1 signal is applied to the lower input of the switching device 35 in the figure. The changeover to the larger final counter value is effected by the switching on of the ignition device and by the signal inputted from the input terminal 27 of the controller 24.
Via the pulse generator 28, this signal is fed as a pulse via the gate 34 to a switching device 35, which is controlled into the upper switching position in FIG. At the same time, this signal starts counter 21 and multiplexer 12 via gates 29 and 30 (FIG. 3). As soon as the counter 21 reaches the larger final count value, which is taken out of the counter 21, for example by a logic circuit known per se, a pulse, which is a signal, is applied to the upper input of the switching device 35. Ru. This 1 signal, via gates 29 and 30, resets counter 21 again via terminal 31. The control device 24 also has a further switching device 36 . The switching device 36 is used to erase the memory of the confirmation memory 22 in its one switching position. This is done by control via OR gate 29. In the switching position of the switching device 36 shown in FIG. is connected to the data input side of the input terminal 38 via an input terminal 38. The pulse, which is the signal sent to the output of the switching device 35 when the set final count value is reached, simultaneously switches the switching device 36 towards the output terminal 37. The output memory 23 is likewise reset by the switching device 35 via the OR gate 39 and the output terminal 40 of the controller 24. The signal from the input terminal 27 of the controller is sent to the output memory 2 via the inverter 41, the OR gate 39, and the output terminal 40 of the controller 24.
3, the output memory 23 is reset even when the vehicle's ignition is turned on. As mentioned above, after the ignition is turned on and connected, when a signal indicating the running operation of the vehicle appears at the input terminal 42 of the controller 24, the signal reaches the switching device 35.
switches so that counter 21, which was activated during the longer sensing cycle up to sensors 25 and 26, is activated during the shorter sensing cycle while the vehicle is running. The controller 24 has a confirmation signal readiness adjustment device 43. This device 43 is controlled via an input terminal 45 by a confirmation switch 16 via an OR gate 44 . When the activation signal for the clock generator for generation of the confirmation signal is supplied via the input terminal 47, the confirmation signal preparation device 43 is triggered by the clock generator 46 via the OR gate 44. The confirmation signal preparation and adjustment device 43 is the logic device 4
8, the logic device is further connected via a terminal 38 to the input side of the confirmation store 22 and via a terminal 49 to the data output side of the confirmation store 22. Logic unit 48 operates according to the truth table shown below.

【table】

[Table] According to the first row of the above truth table, i.e. upon any signal at the input terminal 45, the confirmation memory 22
output terminal 3 which is operatively connected to the data input side of
8 and the O signal at the output terminal 49 corresponding to the data output side of the verification memory 22.
In the case of a signal, counter 21 continues counting and multiplexer 12 is activated. A corresponding signal is supplied to the counter 21 via an output terminal 50. Corresponding to the second row of the truth table, at any position of the confirmation signal from 43, when the data input of the confirmation memory 22 is a logic O and the data output of the confirmation memory 22 is a logic 1, i.e. In the case of a confirmed confirmation signal, a command is issued for erasing the memory of the confirmation memory. This is because although one fault signal has been confirmed, there is no longer a fault. The signal for erasing the confirmation memory 22 is supplied on the one hand from the logic device 48 to the confirmation signal preparation device 43 via an OR gate 51 . That is, logical device 48
A signal or command outputted to the middle output side (terminal 52) of is fed to one input side of the device 43 via a gate 51. This device 43 constitutes a pulse shaping stage for the confirmation signal. By means of this signal, the device 43 for preparing the confirmation signal is ready for operation. Furthermore, the erase signal is supplied to the verification store 22 via the output terminal 52. According to the third row of the truth table, when there is a confirmation signal, when the data input of the confirmation memory is a 1 signal, and when the data output of the confirmation memory is an O signal, the confirmation signal is stored in the confirmation memory 22. be done. According to the fourth line of the truth table, for any confirmation signal, if the data input of the confirmation store is a 1 signal and if the data output of the check store is an O signal, a start signal is supplied to the clock generator 46. When a trigger signal is applied to terminal 47, the clock generator can be activated. Furthermore, a transfer of the fault signal to the output storage takes place. Transfer to this output memory is performed at output terminal 5.
At the same time, the counter 21 is reset to zero via the OR gate 30 and the output terminal 31. According to the fifth row of the truth table, any signal from the confirmation signal switch 16, the data input of the confirmation memory 22 is a 1 signal, and the data output of the confirmation memory 22 is 1.
In the case of a signal, the command to continue counting is sent to the output terminal 50.
via the counter 21, at the same time giving a signal that the most serious fault already identified should be ignored and the detection cycle of the multiplexer should be extended. The controller 24 has a switching device 54 and a sensor 25
When the switching device 35 is switched to one switching position by actuation of the switching device 35 for a detection cycle including 26 and 26, the switching device indicates a “normal” signal on the display device 14 via the output terminal 55. , the illustrated switching contacts of the switching device 54 assume a lower switching position. If, on the other hand, a signal is applied to the data output of the confirmation memory 22, ie at the terminal 49, indicating the presence of an already confirmed fault, the switching device 5
4 is switched to the upper switching position shown and the "normal" signal is suppressed. The controller 24 also includes two oscillators 56 and 57.
is provided and connected to the controller 24 via terminals 58 and 59. At that time, the oscillator 56
generates a high clock frequency, which clock frequency is used as the operating frequency for multiplexing operation of multiplexer 12. Oscillator 57 generates a low output frequency therefor, which output frequency is used for controlling the clock generator. The readiness device 43, the clock generator 46 and the switching devices 35, 36 and 54 can be constructed by known flip-flop modules. The preparation device 43 can be constructed as a monoflop whose two inputs are connected via an OR gate. clock generator 4
6 can be configured as an astable multivibrator with two inputs coupled via an AND gate, switching devices 35, 36 and 54
can be constructed as an RS flip-flop followed by a transfer switch. An embodiment of a display device connectable to the output storage 23 according to FIG. 2 is shown in FIG. From the output memory of the 5-bit memory as shown in FIG. 2, a corresponding number of conductors are connected to a logic connection 56 of the glow lamp and to a device 57 for equivalence testing. The fault indication is made on a drum, which has a correspondingly exposed film or processed metal tape on its circumference, which is translucently illuminated from within, and the fault is indicated in the form of a record. and are arranged in a distributed manner according to their priority, the drums being drivable by means of a motor 58. FIG. 4 shows a drum segment 59 which indicates, for example, that wiper water is below a predetermined limit. Selection of the appropriate drum segment 59 corresponding to the fault that has occurred is made at 60 by comparison with a photoelectrically scanned five-digit tape coding mounted on the drum segment 59 for end position determination and Fixing is carried out by a separate two-digit tape coding 61, which has a very slight overlap on the circumference of the drum, and a three-digit tape coding 62 which divides faults into three priority classes. As shown, glow lamps 63, 64, and 65 are provided correspondingly to the three priority classes. Does each glow lamp have a high or medium severity failure?
Or tell us whether it's small or not. For example, the first failure priority class requires the vehicle to be stopped immediately when the greatest danger to the vehicle and driver arises, for example when the brake fluid falls below a predetermined limit level. should indicate the failure. The second fault priority class means that the vehicle should be stopped immediately and the fault should be removed immediately, otherwise damage to the engine or vehicle may occur. This type of failure is, for example, a lack of cooling water. The third fault priority class includes faults whose fault exclusion is necessary at the next opportunity, but which means there is no direct danger for the vehicle or the driver, for example for wipers. There is a water shortage. It is also possible to indicate a fourth fault priority class, which is only necessary for advance warning and requires the removal of faults possibly before the start of a relatively long journey. Such a failure may occur, for example, in sensors 25 and 2.
6 and can be detected before the start of operation, for example, if the brake lining of the vehicle is in the initial state of 40
It is possible to indicate that the battery has been consumed below a limit value of % or below. Drive motor 58 rotates the drum with drum segment 59 until the signal at the output terminal of output memory 23 matches the tape coding 60 on drum segment 59. The agreement between the two is confirmed by a device 57 for equivalence testing. Since the detection driving indicator lamp remains dark,
No signals from the vehicle driver that would interfere with the rotation of the drum will be accepted. When the tape coding 60 to be searched for is detected on the drum segment 59, the tape coding 61 acts on the logic device 66 such that a narrow overlapping area of the tape coding 61 arrives and the motor 58 can be shut off. The motor 58 is controlled to rotate accurately in the forward direction or in the reverse direction if necessary. If there is no failure alarm or information alarm, the output memory 2
All five binary positions on the output side of 3 are zero and the bulbs for tape codings 60, 61 and 62, symbolized by bulb 67, are extinguished. It is of course possible to use any other display device instead of the display device shown in FIG. 4, such as an electronic display device, a mechanical display device, etc. Extensively and flexibly modified in order to be able to carry out monitoring using monitoring devices according to FIGS. 1 to 4 in various different modes of operation, such as manual reception of faults and periodic reception of faults, etc. can do. Further, in the above-described embodiment, the number and classification of failure notifications can be freely selected by the user, that is, the manufacturer of the vehicle, and in this case, the user can also select the enlargement and form of the display. . The circuit arrangement can advantageously be constructed by LSI (Large Scale Integration) circuits. Disturbance peaks that can occur in the supply line via the on-board power supply of the vehicle, for example due to load shedding or ignition peaks, are limited to permissible voltage values by means of a resistor-diode circuit external to the integrated circuit. By upstreaming a suitable limit value circuit, for example a Schmitt trigger on the signal input side, it is possible to increase the signal-to-noise ratio to a fault voltage of approximately 2/3 of the supply voltage. Despite all fault protection devices, a one-time electrical fault is in any case hardly noticeable during the very short time of a single reading cycle. By means of circuit technology and logical processing of the voltages, a fault signal can be provided in the event of a short-circuit or interruption of the conductors, and at the same time it is possible to increase the reliability of the monitoring computer. The functionality of the monitoring computer can be tested by testing the device via the test terminal with the simultaneous occurrence of all fault signals. In this case, the controller 24 erases all information in the confirmation memory 22 which may no longer be needed when the ignition of the vehicle is switched on. Furthermore, it is particularly advantageous for the vehicle driver to be shown only the most serious faults on the display so that his vehicle characteristics are not disturbed by the information flood of simultaneous faults. By indicating what kind of failure it is, it is possible to notify the driver of the type of failure.

[Brief explanation of the drawing]

Figure 1 is a schematic diagram of the device for monitoring vehicles, Figure 2 is a block diagram of the device for monitoring vehicles, Figure 3 is a detailed block diagram of the controller, and Figure 4 is a failure notification display. 1 is a schematic diagram of an embodiment of the device; 10, 11, 25, 26...sensor, 12...
Multiplexer, 14... Display device, 21... Counter, 22... Confirmation storage device, 23... Output storage device.

Claims (1)

Claims: 1. It has a sensor for monitoring the operating state of the vehicle and is operatively connected to the display device 14 via an evaluation device, and has a multiplexer for periodically detecting said sensor, in which case a failure occurs. In a device for monitoring a vehicle, the signals are displayed on a display device 14, in which an output storage device 23 is connected downstream of the multiplexer 12, in which fault signals are evaluated according to priority.
from the output side of the fault signal, in which case only the most serious fault signal among the plurality of fault signals evaluated according to the priority is displayed,
a confirmation switch 16, 46 for erasing the display of the most serious fault signal; actuation of the confirmation switch erases the display of the fault signal and prevents subsequent periodic calling of the sensor; A device for monitoring a vehicle, characterized in that the device is configured to perform monitoring on the remaining sensors excluding the sensor related to the failure signal. 2 Multiplexer 12 when a fault signal is detected
2. The apparatus according to claim 1, wherein the detection cycle is limited to only fault signals having a higher priority than the detected fault signal. 3 Confirmation switches 16, 46 are provided to confirm the displayed failure, and after the confirmation switch is operated, the limit on the detection cycle of the multiplexer 12 is released, and at this time the multiplexer 12
3. A device according to claim 1, wherein upon detection of other existing fault signals, the detection cycle is extended to these faults without taking into account the detected faults of higher priority. 4 Confirmation switch 16, 46 and multiplexer 1
4. The device as claimed in claim 3, wherein a confirmation memory 22 operatively connected to 2 is provided for storing confirmation signals corresponding to individual faults. 5. The device according to claim 3 or 4, wherein the confirmation switch 16 is manually operated. 6. Apparatus according to claim 3 or 4, in which the confirmation switch is operated by a clock generator 46 with a predetermined clock frequency. 7. Device according to one of claims 1 to 6, in which the sensors 10, 22, 25, 26 are operatively connected to the multiplexer 12 via a decoupling device 19. 8. Device according to one of the claims 1 to 7, characterized in that a fault simulation circuit arrangement 20 is connected upstream of the multiplexer 12. 9. Claim in which the multiplexer 12 is controlled by a counter 21, the counter 21 being switchable between two final count values and thereby determining the number of sensors 10, 11 to 25, 26 detected. The device according to any one of the ranges 1 to 8. 10 Sensors 10, 11, 25, 26 detected by multiplexer 12 before vehicle travel
The number of sensors 10, 11, 25, 26 is detected before the start of driving by increasing the number of sensors 10, 11, 25, and 26 than when the vehicle is in operation,
The sensors 10, 11, 2 are detected depending on the signal 42, which provides a warning signal regarding a predetermined component or a predetermined operating state and is indicative of the operating state of the vehicle.
10. Device according to claim 1, characterized in that the numbers 5, 26 are changed by a switching device (35). 11. A fault simulation circuit arrangement 20, a multiplexer 12, a counter 21, an output memory 23 and a confirmation memory 22 connected to the output of the counter are controlled by a controller 24 and supply operating clock pulses for the synchronous operation of the device. The device according to any one of claims 8 to 10, wherein the device is configured to: 12 The controller 24 transfers the confirmation signal to the confirmation memory 22, transfers the fault signal from the multiplexer 12 to the output memory 23, erases the memory of the confirmation memory 22 in accordance with the detection cycle, and outputs the memory. 12. The device according to claim 11, wherein erasing of the memory of the device is controlled. 13 The controller 24 controls the counter 21 depending on the signal indicating the operation operation of the vehicle, and the sensor 1 detected by the controller 24
Device according to any one of claims 9 to 12, for switching for expansion or restriction of 0, 11, 25, 26. 14 Output storage device 23 and display devices 63, 64,
14. A device according to claim 1, wherein 65 is operatively connected for displaying a failure priority class. 15 From claim 1, in which a display device 59 together with the output storage 23 is provided for an optical indication or "normal" indication of the most serious fault, so as to indicate the fault in clear text. Apparatus according to any one of clauses up to clause 14. 16. Device according to claim 15, in which the display device is constructed as an internally illuminated drum, the translucent drum segment 59 of which has a fault indicator.