JP4483353B2 - In-vehicle electrical component test system and test method - Google Patents

Description

  The present invention relates to a test system for in-vehicle electrical components, and more particularly to a technique for performing a test including the influence of a fluctuation in power supply voltage or an instantaneous stop.

  In recent years, as the functionality of automobiles has increased, the number of electrical components mounted on automobiles has increased, and the quality of electrical components has had a great influence on the quality of automobiles. For this reason, rapidity and accuracy are required for testing of in-vehicle electrical components.

  However, since the number of signal points used in in-vehicle electrical components reaches several hundreds, it takes a very long time to perform a test manually. In addition, in human testing, human errors increase in proportion to the increase in the number of test points, making it difficult to perform highly accurate testing of in-vehicle electrical components.

In order to solve such a problem, an in-vehicle electrical component automatic test apparatus that automatically evaluates various electrical components has been proposed, and is described in, for example, Japanese Patent Application Laid-Open No. 2003-252129 (Patent Document 1). Things are known. In Patent Document 1, an operation command signal is output to the in-vehicle device side, a response signal to the operation command signal is acquired, and the response signal is analyzed to check whether the electrical component is operating normally. Like to do.
Japanese Patent Laid-Open No. 2003-252129

  Here, malfunctions that occur in actual in-vehicle electrical components are not necessarily caused only by the operation signals of the in-vehicle electrical components, but are largely affected by fluctuations in the power supply voltage of the vehicle and the timing of the ignition key (IGN-Key). Giving. Therefore, in an actual test for in-vehicle electrical components, it is necessary to perform not only an operation signal for the in-vehicle electrical components but also a test for fluctuations in power supply voltage (decrease and instantaneous interruption). However, in the past, the inspection of electrical components in consideration of fluctuations in the power supply voltage has not been performed.

  The present invention has been made to solve such a conventional problem, and an object of the present invention is to provide an in-vehicle electrical component that can be tested for an in-vehicle electrical component that also considers fluctuations in power supply voltage. It is to provide a test system and a test method.

In order to achieve the above object, the present invention provides an electrical component operation signal for testing a driving state of an electrical component mounted on a vehicle in a test system for testing the operational state of the electrical component mounted on the vehicle. Based on the power supply voltage command signal output from the command signal output means, and the command signal output means for outputting the power supply voltage command signal or the instantaneous interruption command signal for the power supply mounted on the vehicle , A test power supply means for supplying a desired voltage fluctuation pattern to the electrical component, and an instantaneous interruption for supplying a desired voltage interruption pattern to the electrical component based on the instantaneous interruption command signal output from the command signal output means Means, a manual operation switch for manually operating the in-vehicle device, a response of the electrical component when the electrical component operation signal is given, and a power supply voltage command signal or an instantaneous interruption finger The response of the electrical component when a signal is given is monitored, and further, the fluctuation pattern or instantaneous interruption of the output voltage of the power supply actually mounted on the vehicle when the in-vehicle device is operated with the manual operation switch When the on- vehicle equipment is operated with the manual operation switch and the output voltage fluctuation pattern or instantaneous interruption pattern is monitored by the monitoring means, the fluctuation pattern or instantaneous interruption is monitored. Monitor data storage means for storing and saving a pattern , wherein the command signal output means uses the output voltage fluctuation pattern or the output voltage instantaneous interruption pattern stored and saved in the monitor data storage means to perform the test. The power supply voltage command signal or the instantaneous interruption command signal is output to the power supply means .

  In the in-vehicle electrical component testing system according to the present invention, when the power supply voltage corresponding to the command signal of the power supply voltage output from the command signal output means is output from the test power supply device, and this power supply voltage is supplied to the electrical component Since the response signal is monitored by the monitoring means, the operation of the electrical component when the fluctuation of the power supply voltage occurs can be confirmed by looking at the monitoring result. Thereby, the test with respect to a voltage fluctuation can be easily performed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a test system for in-vehicle electrical components according to the first embodiment of the present invention. As shown in the figure, a test system for in-vehicle electrical components according to the present embodiment includes a command signal output device (command signal output means) 2, a power supply device (test power supply means) 3, and an instantaneous interruption device (instantaneous interruption). Means) 4 and a response signal monitor device (monitor means) 5.

  The command signal output device 2 generates and outputs an electrical component operation signal for testing the driving state with respect to various electrical components 1 (1a, 1b,...) Mounted on the vehicle. A power supply voltage command signal for setting an output voltage value is generated and output to the power supply, and further, an instantaneous interruption command signal for instantaneously interrupting the power supply voltage to the instantaneous interruption device 4, for example, when an ignition key is operated Outputs a signal that simulates the instantaneous interruption of the generated battery voltage.

  The power supply device 3 outputs a voltage at a predetermined level in response to an electrical component operation signal given from the command signal output device 2, and uses a bipolar power source that is asymmetrical with positive and negative voltages in order to improve responsiveness. In addition, a large-capacity power supply that can simulate a battery mounted on a vehicle is used.

  The instantaneous interruption device 4 performs an operation of instantaneously stopping the voltage output from the power supply device 3 based on the instantaneous interruption command signal for instantaneously interrupting the power supply voltage output from the command signal output device 2.

  The response signal monitoring device 5 monitors the response signal of each electrical component 1 (1a, 1b,...) With respect to the operation command signal output from the command signal output device 2.

  Next, the operation of the test system for in-vehicle electrical components according to the first embodiment will be described with reference to the flowchart shown in FIG.

  First, a process for creating a command signal corresponding to the test purpose of the electrical component 1 (1a, 1b,...) Is performed (step S1). Here, whether to perform a test based on the operation waveform of the electrical component 1 (1a, 1b,...) (Step S2), whether to perform a power supply voltage interruption test when the ignition key is operated (step S4), or a vehicle power supply voltage It is selected whether or not the instantaneous drop test is to be performed (step S6).

  And when the test by the operation | movement waveform of electrical component 1 (1a, 1b ...) is implemented (it is YES at step S2), the command signal output device 2 produces an electrical component operation signal (step S3). In addition, when the instantaneous stop of the voltage caused by the operation of the ignition key, that is, the voltage interruption test is performed (YES in step S4), the command signal output device 2 simulates the operation of the ignition key. The instantaneous interruption command signal is generated (step S5). When the vehicle power supply voltage instantaneous drop test is performed (YES in step S6), the command signal output device 2 creates a power supply voltage command signal having a desired variation pattern (step S7).

  Thereafter, a test of the electrical component 1 (1a, 1b,...) Corresponding to each purpose is started (step S8). When the vehicle power supply voltage drop test is performed (YES in step S9), the power supply voltage command signal created in the process of step S7 is output from the command signal output device 2 (step S10). Based on the power supply voltage command signal, the power supply device 3 outputs a voltage having a magnitude proportional to the power supply voltage command signal to the electrical component 1 (1a, 1b,...) Side (step S11). As a result, for example, a voltage that fluctuates with time change as shown in FIG. 3 is output to the electrical component 1 (1a, 1b,.

  Thereafter, the response signal of each electrical component 1 (1a, 1b,...) With respect to the voltage fluctuation is monitored by the response signal monitor device 5 (step S17). Then, it is possible to confirm whether or not the electrical component 1 (1a, 1b,...) To be tested is operating normally based on the result of this monitor.

  Further, when the instantaneous interruption test of the voltage caused by the operation of the ignition key is performed (YES in step S12), the instantaneous interruption command signal created in the above-described step S5 is output from the instruction signal output device 2. In step S13, the instantaneous interruption device 4 performs an on / off operation on the output voltage of the power supply device 3 in response to the instantaneous interruption command signal (step S14). Thereby, for example, a voltage that is momentarily interrupted for a predetermined time as shown in FIG. 4 is output to the electrical component 1 (1a, 1b,...).

  There are various patterns of instantaneous voltage interruption. In the present embodiment, three types of voltage instantaneous interruption patterns (patterns simulating an instantaneous stop of the battery voltage) as shown in FIGS. Are used to test the operation of each electrical component 1 (1a, 1b,...). Then, the response signal from each electrical component 1 (1a, 1b,...) With respect to the supply of the voltage having the instantaneous interruption pattern is monitored by the response signal monitor device 5, and the electrical component 1 (1a, 1b,. ) Is operating normally (step S17).

  Furthermore, when the test using the operation waveform of the electrical component is performed (YES in step S15), the electrical component operation signal generated in the process of step S3 described above is transmitted to each electrical component 1 (1a, 1b,...). Is output. FIG. 5 is a timing chart showing an electrical component operation signal when driving a washer as an example of an in-vehicle electrical component. FIG. 5A is an accessory switch on / off state, and FIG. 5B is an ignition switch. (C) shows the on / off state of the washer operation signal. FIG. 4D shows the driving state of the washer, FIG. 5E shows the driving state of the wiper, and FIG. 5F shows the wiper stop signal.

  As shown in the figure, when the accessory switch and the ignition switch are turned on at time t0, and then the washer operation signal is turned on at time t1, the washer is driven at time t2 slightly later than time t1, and the wiper is simultaneously driven. To do. When the washer operation signal is turned off at time t3, the washer is stopped at time t4, which is slightly delayed, and then a wiper stop signal is output at time t5, and the wiper is stopped at time t6.

  Then, the response signal monitoring device 5 monitors the washer and the wiper response signal for the series of operation inputs, and can confirm whether or not the washer and the wiper are operating normally (step S17).

  In this way, in the in-vehicle electrical component test system according to the first embodiment, by supplying the electrical component operation signal to each electrical component 1 (1a, 1b,...), Each electrical component 1 (1a, 1b,. .) Can be confirmed, so that the operational states of a large number of electrical components 1 (1a, 1b,...) Mounted on the vehicle can be tested in a short time, and the labor required for manpower is significantly reduced. can do.

  Further, a power supply device 3 is mounted on the subsequent stage of the command signal output device 2, and the voltage supplied to each electrical component 1 (1a, 1b,...) Based on the power supply voltage command signal output from the command signal output device 2 Since the value is changed, it is possible to test the operation state of each electrical component 1 (1a, 1b,...) When the power supply voltage changes.

  That is, the power supply voltage corresponding to the command signal of the power supply voltage output from the command signal output means is output from the test power supply device, and the response signal when the power supply voltage is supplied to the electrical component is monitored by the monitor means. Therefore, based on the monitoring result, it is possible to confirm the operation of the electrical component when the fluctuation of the power supply voltage occurs.

  Further, the instantaneous interruption device 4 is mounted in the subsequent stage of the power supply device 3, and the voltage simulating the instantaneous power stop that occurs when the ignition switch is turned on in the instantaneous interruption device 4 is set to each electrical component 1 (1a, 1b,...). Therefore, it is possible to test the operating state of each electrical component 1 (1a, 1b,...) When an instantaneous interruption of the power supply voltage occurs.

  That is, since the power supply voltage having an instantaneous voltage stop can be supplied to the electrical equipment by the instantaneous interruption means, the response signal when the instantaneous interruption voltage is supplied to the electrical equipment is monitored by the monitoring means. It is possible to check the operation of electrical components when a power interruption occurs.

  Also, by using the pattern when the ignition switch is turned on as an instantaneous voltage stop pattern, the response signal of the electrical component to the voltage interruption pattern at the time of turning on the ignition switch that can occur frequently when driving the vehicle equipment is monitored. be able to.

  In addition, since the command signal output device 2 and the power supply device 3 are separated, the amount of heat generated in the command signal output device 2 is extremely small, and it is not necessary to take measures to improve heat resistance, and the size and the size of the device can be reduced. Cost can be reduced.

  Next, a second embodiment of the present invention will be described. FIG. 6 is a block diagram illustrating a configuration of the test system for in-vehicle electrical components according to the second embodiment. As shown in the figure, the in-vehicle electrical component testing system according to the second embodiment is different from the first embodiment shown in FIG. 1 described above in that a monitor data storage unit (monitor data storage means) 6, And a manual operation switch 7 is provided. Therefore, the description of the configuration of other configuration requirements, that is, the command signal output device 2, the power supply device 3, the instantaneous interruption device 4, and the response signal monitor device 5 is omitted.

  The manual operation switch 7 is a switch for manually operating the vehicle electrical equipment 1 (1a, 1b,...) To be tested and other in-vehicle devices.

Monitor data storage unit 6, a manual operation switch 7 to operate the vehicle equipment by using, when the variation or interruption of the power supply voltage of the vehicle battery is monitored by the response signal monitoring unit 5, this voltage variation Data of a pattern or a voltage interruption pattern is stored. For example, when the on-board air conditioner is operated with the manual operation switch 7, if the battery voltage changes as shown in the characteristic diagram of FIG. 3 described above, this data is stored, and the ignition is also stored. When a battery voltage instantaneous interruption occurs as shown in the characteristic diagram of FIG. 4A when the switch is turned on, the voltage instantaneous interruption pattern is stored.

  Next, the operation of the in-vehicle electrical component testing system according to the second embodiment will be described with reference to the flowcharts shown in FIGS.

  First, a process for creating a command signal corresponding to the test purpose of the electrical component 1 (1a, 1b,...) Is performed (step S21). The operator operates the in-vehicle device by operating the manual operation switch 7 (step S22), and the response signal monitor device 5 monitors the fluctuation of the voltage value of the vehicle battery at that time. Further, the monitored data Is stored in the monitor data storage unit 6 (step S23). Next, the voltage fluctuation pattern data stored in the monitor data storage unit 6 is output to the command signal output device 2 (step S24).

  Then, whether to perform a test based on the operation waveform of the electrical component 1 (1a, 1b,...) (Step S25), whether to perform a power supply voltage interruption test when the ignition key is operated (step S27), or the vehicle power supply voltage It is selected whether or not the voltage drop test is to be performed (step S29).

  And when the test by the operation | movement waveform of electrical equipment 1 (1a, 1b ...) is implemented (it is YES at step S25), the command signal output device 2 produces an electrical equipment operation signal (step S26).

  Further, in the case of performing an instantaneous voltage interruption test caused by the operation of the ignition key (YES in step S27), the command signal output device 2 outputs the pattern data of the voltage fluctuation output from the monitor data storage unit 6. Based on the above, an instantaneous interruption command signal (ignition key operation command signal) is set (step S28). Thus, the instantaneous interruption command signal becomes a voltage signal that simulates the voltage fluctuation of the battery actually mounted on the vehicle.

  When the vehicle power supply voltage instantaneous drop test is performed (YES in step S29), the command signal output device 2 uses the power supply voltage command signal based on the voltage fluctuation data output from the monitor data storage unit 6. Is set (step S30).

  Thereafter, the test of the electrical component 1 (1a, 1b,...) Corresponding to each purpose is started (step S31 in FIG. 8). When the vehicle power supply voltage instantaneous drop test is executed (YES in step ST32), the command signal output device 2 outputs the power supply voltage command signal set in the process of step S30 described above (step S33). Based on the power supply voltage command signal, the power supply device 3 outputs a voltage having a magnitude proportional to the power supply voltage command signal to the electrical component 1 (1a, 1b,...) Side (step S34).

  Thereby, the fluctuation voltage which simulated the voltage fluctuation of the actual battery by manual operation is output to each electrical component 1 (1a, 1b ...), and the response of each electrical component 1 (1a, 1b ...) to the voltage fluctuation The signal is monitored by the response signal monitor device 5 (step S40). Then, it is possible to confirm whether or not the electrical component 1 (1a, 1b,...) To be tested is operating normally based on the result of the monitor.

  Further, when performing the instantaneous interruption test of the voltage generated due to the operation of the ignition key (YES in step S35), the instantaneous interruption command signal set in the process of step S28 from the command signal output device 2 (Ignition key operation command signal) is output (step S36), and when this instantaneous interruption command signal is given, the output voltage of the power supply device 3 is turned on and off (step S37). Thereby, the power supply voltage accompanied by a momentary interruption is output to the electrical equipment 1 (1a, 1b...).

  Then, the response signal from each electrical component 1 (1a, 1b,...) With respect to the supply of the voltage having the instantaneous interruption pattern is monitored by the response signal monitoring device 5 (step S40), and the electrical component 1 (1a) to be tested. , 1b) can be confirmed.

  Furthermore, when the test using the operation waveform of the electrical component is performed (YES in step S38), the electrical component operation signal generated by the processing in step S26 described above is output to each electrical component 1 (1a, 1b,...). Is done. Then, the response signal of each electrical component 1 (1a, 1b,...) With respect to this electrical component operation signal is monitored by the response signal monitor device 5 (step S40), and each electrical component 1 (1a, 1b,. You can check if it is working properly.

  In this way, in the in-vehicle electrical component test system according to the second embodiment, by supplying the electrical component operation signal to each electrical component 1 (1a, 1b,...), Each electrical component 1 (1a, 1b,. .) Can be confirmed, so that the operational states of a large number of electrical components 1 (1a, 1b,...) Mounted on the vehicle can be tested in a short time, and the labor required for manpower is significantly reduced. can do.

  Further, a power supply device 3 is mounted on the subsequent stage of the command signal output device 2, and the voltage supplied to each electrical component 1 (1a, 1b,...) Based on the power supply voltage command signal output from the command signal output device 2 Since the value is changed, it is possible to test the operation state of each electrical component 1 (1a, 1b,...) When the power supply voltage changes.

  Further, the instantaneous interruption device 4 is mounted in the subsequent stage of the power supply device 3, and the voltage simulating the instantaneous power stop that occurs when the ignition switch is turned on in the instantaneous interruption device 4 is set to each electrical component 1 (1a, 1b,...). Therefore, it is possible to test the operating state of each electrical component 1 (1a, 1b,...) When an instantaneous interruption of the power supply voltage occurs.

  In addition, the vehicle equipment is actually operated by manual operation, and the battery voltage fluctuation at this time is monitored. Using this monitoring result, the instantaneous interruption command signal at the instantaneous interruption test or the power supply voltage instruction at the instantaneous voltage drop test Since the signal is generated, it is possible to set a command signal that closely simulates the voltage fluctuation of the battery mounted on the vehicle, and the test system for the electrical equipment 1 (1a, 1b,...) Can be improved.

  In other words, the vehicle equipment is actually operated, and the battery voltage fluctuation pattern or the battery voltage instantaneous interruption pattern generated at this time is stored, and the voltage of each electrical component is stored using the voltage fluctuation pattern or the voltage instantaneous interruption pattern. Since the variation test is performed, it is possible to perform a test with a voltage that matches the actual operation.

  Further, since the command signal output device 2 and the power supply device 3 are separated, the amount of heat generated in the command signal output device 2 is extremely small, and it is not necessary to take measures to improve heat resistance, and the size and the size of the device can be reduced. Cost can be reduced.

  This is extremely useful for testing on-vehicle electrical components including fluctuations in power supply voltage or instantaneous interruption.

It is a block diagram which shows the structure of the test system of the vehicle-mounted electrical equipment which concerns on the 1st Embodiment of this invention. It is a flowchart which shows operation | movement of the test system of the vehicle-mounted electrical equipment which concerns on 1st Embodiment. It is a characteristic view which shows the fluctuation pattern of the voltage output from a power supply device. It is a characteristic view which shows the instantaneous interruption pattern of the voltage output from an instantaneous interruption device. It is a characteristic view which shows the operation signal at the time of performing the operation | movement test of the washer motor as an electrical component, and a wiper. It is a block diagram which shows the structure of the test system of the vehicle-mounted electrical equipment which concerns on the 2nd Embodiment of this invention. It is the 1st partial view of the flowchart which shows operation | movement of the test system of the vehicle-mounted electrical equipment which concerns on 2nd Embodiment. It is the 2nd partial view of the flowchart which shows operation | movement of the test system of the vehicle-mounted electrical equipment which concerns on 2nd Embodiment.

Explanation of symbols

1 (1a, 1b ...) Electrical equipment 2 Command signal output device (command signal output means)
3 Power supply (Test power supply means)
4 Momentary interruption device (Measuring means)
5. Response signal monitoring device (monitoring means)
6 Monitor data storage (monitor data storage means)
7 Manual operation switch

Claims (2)

In a test system for testing the operating state of electrical components mounted on a vehicle,
A command to output an electrical component operation signal for testing a driving state to an electrical component mounted on the vehicle, and to output a power supply voltage command signal or an instantaneous interruption command signal for the power source mounted on the vehicle. Signal output means;
Based on a power supply voltage command signal output from the command signal output means, a test power supply means for supplying a desired voltage variation pattern to the electrical component,
Based on the instantaneous interruption command signal output from the command signal output means, instantaneous interruption means for supplying a desired voltage interruption pattern to the electrical component;
A manual operation switch for manually operating the in-vehicle device
Monitoring the response of the electrical component when the electrical component operation signal is given, and monitoring the response of the electrical component when the power supply voltage command signal or the instantaneous interruption command signal is given, Monitor means for monitoring the fluctuation pattern or instantaneous interruption pattern of the output voltage of the power supply actually mounted on the vehicle when the in-vehicle device is operated with the manual operation switch ;
Monitor data storage that stores and saves the fluctuation pattern or instantaneous interruption pattern when the output voltage fluctuation pattern or instantaneous interruption pattern is monitored by the monitoring means when the in-vehicle device is operated by the manual operation switch. Means, and
The command signal output means uses the output voltage fluctuation pattern or the output voltage instantaneous interruption pattern stored in the monitor data storage means to output the power supply voltage command signal or the instantaneous interruption instruction to the test power supply means. A test system for in-vehicle electrical components characterized by outputting a signal . In a test method for testing the operating state of electrical components mounted on a vehicle,
A step of monitoring the actual fluctuation pattern or instantaneous interruption pattern of the output voltage of the power source mounted on the vehicle and storing it in the monitor data storage means when the in-vehicle device is operated by the manual operation switch mounted on the vehicle; ,
A step of monitoring a response of the electrical component when an electrical component operation signal for testing a driving state is output from the command signal output means to the electrical component mounted on the vehicle;
When the power supply voltage command signal or the instantaneous interruption command signal is output from the command signal output means, the power supply voltage based on the fluctuation pattern of the output voltage stored in the monitor data storage means or the instantaneous interruption pattern of the output voltage Outputting a command signal or an instantaneous interruption command signal to an electrical component mounted on the vehicle, and monitoring a response of the electrical component;
A test method for on-vehicle electrical components, comprising:

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