JP2022181293A - Power testing device of vehicle, abnormality detection method of power testing device of vehicle, and program - Google Patents

Abstract

To provide a power testing device of a vehicle which can accurately detect an abnormality of the power testing device of the vehicle regardless of a length of the testing time for each test.SOLUTION: A power testing device of a vehicle detects an abnormality of a vehicle speed which is recognized by an electronic control device of a test vehicle C on the basis of an actual measurement vehicle speed being a vehicle speed obtained by measuring the rotation of a wheel of the test vehicle C and a control vehicle speed being a vehicle speed acquired from the electronic control device mounted on the test vehicle C. The power testing device records a fluctuation tendency of a difference between the actual measurement vehicle speed and the control vehicle speed when the rotation can be normally measured, and notifies of the abnormality of the power testing device in a case where the newly acquired difference is outside the normal range determined on the basis of the recorded fluctuation tendency.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to a vehicle power test device, an abnormality detection method for a vehicle power test device, and a program.

With respect to a vehicle power test apparatus, Patent Literature 1 describes a power measurement system that tests a test object by repeatedly performing power driving according to an automatic driving pattern a specified number of times. The dynamometer system described in Patent Document 1 includes a first abnormality detection means for determining an abnormality when the measured value of the test piece exceeds a preset range during the test, and the operation of one operation pattern. The presence or absence of an abnormality in the dynamometric system is determined based on whether or not the time deviation is within the allowable deviation set value.

Japanese Patent Application Laid-Open No. 2006-170741

However, when the operator operates the vehicle to inspect the vehicle, or when the automatic driving pattern is not repetitive, the driving time varies. Therefore, in the abnormality determination of the power testing device based on the length of operation time (test time) as in the technique described in Patent Document 1, there is a possibility that the accuracy of detecting the abnormality of the power testing device is lowered.

The present disclosure has been made in order to solve such problems, and the purpose thereof is to make it possible to accurately detect an abnormality in a vehicle power test device regardless of the difference in test time length for each test. It is another object of the present invention to provide a vehicle power test device, an abnormality detection method for the vehicle power test device, and a program.

A vehicle power test apparatus according to a first aspect of the present disclosure includes a measured vehicle speed, which is a vehicle speed obtained by measuring the rotation of a wheel of a test vehicle, and a vehicle speed obtained from an electronic control device provided in the test vehicle. and an abnormality in the vehicle speed recognized by the electronic control unit of the test vehicle is detected. The power testing device records the variation tendency of the difference between the measured vehicle speed and the controlled vehicle speed when the measurement is normally performed, and the newly acquired difference is determined based on the recorded variation tendency. If it is out of the normal range, an abnormality of the power test equipment is notified. With such a configuration, the power test apparatus can accurately detect an abnormality of the power test apparatus regardless of the difference in the length of test time for each test.

The normal range may be defined as a narrower range than the range for determining abnormality of the test vehicle. As a result, it is possible to detect and report an abnormality in the power testing device before an abnormality in the test vehicle is detected due to the abnormality in the power testing device.

In a vehicle power testing device abnormality detection method according to a second aspect of the present disclosure, a vehicle power testing device measures a measured vehicle speed, which is a vehicle speed obtained by measuring rotation of a wheel of a test vehicle, and A control vehicle speed, which is a vehicle speed acquired from the provided electronic control device, is input, and the power test device recognizes the electronic control device of the test vehicle based on the measured vehicle speed and the control vehicle speed. Detect vehicle speed anomalies. Further, in the abnormality detection method, when the power test device is able to measure normally, the fluctuation trend of the difference between the actually measured vehicle speed and the controlled vehicle speed is recorded, and the power test device is newly acquired. If the difference is outside the normal range determined based on the recorded fluctuation trend, an abnormality of the power testing device is reported. With such a configuration, the abnormality detection method can accurately detect an abnormality in the power testing device regardless of the difference in the length of test time for each test.

The normal range may be defined as a narrower range than the range for determining abnormality of the test vehicle. As a result, it is possible to detect and report an abnormality in the power testing device before an abnormality in the test vehicle is detected due to the abnormality in the power testing device.

A program according to a third aspect of the present disclosure is a program for causing a computer that performs a power test of a vehicle to execute processing. In the above process, the measured vehicle speed, which is the vehicle speed obtained by measuring the rotation of the wheels of the test vehicle, and the controlled vehicle speed, which is the vehicle speed obtained from the electronic control unit provided in the test vehicle, are inputted, Abnormal vehicle speed recognized by the electronic control unit of the test vehicle is detected based on the vehicle speed and the controlled vehicle speed. Further, the process records the fluctuation tendency of the difference between the measured vehicle speed and the controlled vehicle speed when the measurement is normally performed, and the newly acquired difference is determined based on the recorded fluctuation tendency. If it is outside the normal range, an anomaly in the power test is reported. With such a configuration, the program can accurately detect an abnormality in the power test regardless of the length of test time for each test.

The normal range may be defined as a narrower range than the range for determining abnormality of the test vehicle. As a result, it is possible to detect and report an abnormality in the power test before an abnormality in the test vehicle is detected due to the abnormality in the power test.

According to the present disclosure, a vehicle power testing device capable of accurately detecting an abnormality in the vehicle power testing device regardless of the difference in test time length for each test, an abnormality detection method for a vehicle power testing device, and program can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic explanatory diagram showing one configuration example of a vehicle power testing apparatus and one example of a test vehicle according to an embodiment; FIG. 2 is a flowchart for explaining an example of processing in the power testing apparatus of FIG. 1; 2 is a graph showing an example of test results by the power testing apparatus of FIG. 1; FIG. 2 is a schematic diagram for explaining an example of a normal range determined by the power testing apparatus of FIG. 1;

Hereinafter, the present invention will be described through embodiments of the invention, but the invention according to the scope of claims is not limited to the following embodiments. Moreover, not all the configurations described in the embodiments are essential as means for solving the problem.

(Embodiment)
With reference to FIG. 1, one configuration example of a vehicle power test apparatus (hereinafter referred to as the main test apparatus) according to the present embodiment will be described. FIG. 1 is a schematic explanatory diagram showing one configuration example of this test apparatus and one example of a test vehicle.

This testing device is a device for detecting abnormalities such as vehicle speed recognized by the ECU of the test vehicle C. As illustrated in FIG. An information receiver 14 and a determiner 15 may be provided. ECU is an abbreviation for Electronic Control Unit, and is an example of an electronic control unit mounted on a vehicle. An electronic control device mounted on a vehicle is sometimes called an ECM (Engine Control Module).

The inspection device 11 includes a rotating drum (rotating roller) arranged so as to be positioned on the tire of the test vehicle C during the test, and rotation detection means such as a tachometer or an encoder for detecting the number of revolutions (rotational speed) of the drum (rotating roller). be able to. The inspector 11 detects the rotation speed at that time in a state in which the inspector U gets on the test vehicle C and rotates the tire by running operation. It should be noted that the unit of rotation speed may be rpm, for example. Moreover, the tester 11 can also be called a drum tester.

Thus, the tester 11 can read (measure) the rotational speed of the tire of the test vehicle C. FIG. The rotation speed to be read can also be referred to as the measuring instrument speed, the inspection instrument vehicle speed, etc. Hereinafter, in order to distinguish it from other speeds, it will be referred to as the measuring instrument speed. The inspection device 11 is connected to the facility control panel 12 and outputs the detected measuring instrument speed to the facility control panel 12 .

The facility control panel 12 outputs the measuring instrument speed input from the inspection device 11 as it is or the running speed calculated from the measuring instrument speed to the determination device 15 . The speed output from the equipment control panel 12 is the speed used as the actually measured vehicle speed for comparison by the determiner 15, and is hereinafter referred to as the tester vehicle speed. The inspection device 11 and the facility control panel 12 can employ known configurations, and detailed description thereof will be omitted.

The ECU information transmitter 13 is a device that reads a signal (vehicle signal) of information (ECU information) handled by an ECU built in the test vehicle C from the ECU and transmits the signal by radio. Here, the ECU information may include at least information indicating the vehicle speed recognized by the ECU when the equipment control panel 12 outputs the tester vehicle speed, and hereinafter, the ECU information will be referred to as the ECU vehicle speed.

The ECU information receiver 14 receives the ECU vehicle speed transmitted from the ECU information transmitter 13 . Of course, the ECU information transmitter 13 may actively transmit the ECU vehicle speed sequentially, or the ECU information transmitter 13 may sequentially transmit the ECU vehicle speed in response to a request from the ECU information receiver 14 side. good.

The ECU information transmitter 13 can be connected by wire to the ECU installed in the test vehicle C, or can use the one originally installed in the ECU installed in the test vehicle C. FIG. Although the ECU information transmitter 13 and the ECU information receiver 14 are described on the assumption that they are connected wirelessly, it is possible to adopt a configuration in which the ECU information transmitter 13 and the ECU information receiver 14 are connected by wire and the ECU vehicle speed is transmitted and received by wire communication. can also

The determiner 15 determines the measured vehicle speed (tester vehicle speed) obtained by measuring the rotation of the wheels of the test vehicle C, and the control vehicle speed (ECU vehicle speed), which is the vehicle speed obtained from the ECU provided in the test vehicle C. Based on this, an abnormality in the vehicle speed (ECU vehicle speed) recognized by the ECU of the test vehicle C is detected.

Vehicle speed abnormality detection can be executed based on various calculations, but as a simple example, it is determined whether or not the difference between the tester vehicle speed and the ECU vehicle speed is greater than a predetermined threshold. is detected as abnormal. Therefore, the determiner 15 can be called a comparison determiner.

The detection result can be notified by being output by a display device or an audio output device (not shown) or by being notified to a specified destination.

This test apparatus not only performs such comparison and judgment, but also stores and manages the trends of the comparison results and judgment results in a built-in or externally connected storage device. Management will also be described with an example executed by the determination device 15 .

The judging device 15 records, in the storage device, the fluctuation trend of the difference between the tester vehicle speed and the ECU vehicle speed when the measurement is normally performed. Then, if the newly obtained difference is outside the normal range determined based on the recorded fluctuation trend, the determiner 15 detects an abnormality of the test apparatus.

Here, normal measurement means normal operation without any abnormality such as no output of measurement results or judgment results. This includes the state in which anomalies in can be correctly detected. In addition, when the measurement is normally performed, when the abnormality detection of ECU vehicle speed is performed for many test vehicles C from the above state, the time when this test device stops operating normally, and when this test device stops operating normally It can refer to until at least one of the time points at which an abnormality is detected is satisfied.

In addition, when an abnormality of the test apparatus is detected, the determination device 15 can be notified by outputting it on a display device or an audio output device (not shown) or by notifying a designated destination. . The notification destination at this time may be the same as or different from the notification destination when the ECU vehicle speed abnormality occurs.

In this way, in this test device, the ECU vehicle speed, which is the speed recognized by the vehicle, and the tester vehicle speed, which is the speed measured by this test device, are compared in consideration of their histories. In other words, it has a configuration for determining normality/abnormality of the inspection equipment side).

Note that the determiner 15 can function as a control unit that controls the entire test apparatus. This control unit is, for example, a CPU (Central Processing Unit), a working memory, and a non-volatile storage device that stores programs such as judgment processing and notification processing for judging ECU vehicle speed and abnormality of this test device. It can be realized by computer. Also, this control unit can be realized by including an integrated circuit, for example.

Next, a processing example of this testing apparatus will be described with reference to FIG. FIG. 2 is a flowchart for explaining an example of processing in the present testing apparatus of FIG.

As shown in FIG. 2, the abnormality detection method (abnormality notification method) in the test apparatus of FIG. 1 executes the following abnormality detection processing. That is, first, the test vehicle C is run on the inspection device 11 (step S1).

Next, the ECU information transmitter 13 transmits ECU information (ECU vehicle speed) to the ECU information receiver 14 (step S2), the ECU information receiver 14 receives it and transmits it to the determiner 15, and the determiner 15 Record it (step S3). Also, the tester 11 and the facility control panel 12 detect the tester vehicle speed (step S4), transmit the detected tester vehicle speed to the determiner 15, and the determiner 15 records it (step S5).

It is desirable that the processing of steps S2 and S3 and the processing of steps S4 and S5 are executed in parallel. You can go back and forth. In both cases of concurrent processing and non-simultaneous processing, the tester vehicle speed and the ECU vehicle speed corresponding to the measurement time of the vehicle speed are associated with each other by time information and recorded in the determination device 15. .

After the processing of steps S3 and S5, the determiner 15 compares the latest ECU vehicle speed with the tester vehicle speed, determines whether the ECU vehicle speed is normal/abnormal, and notifies the determination result (step S6). The judgment result may be notified only when there is an abnormality.

Here, the test result by this test apparatus is demonstrated, referring FIG. FIG. 3 is a graph showing an example of test results by this test device, and is a graph comparing actual vehicle speed readings in time series. In FIG. 3, the camera vehicle speed refers to the vehicle speed obtained by imaging the speedometer of the test vehicle C with a camera and performing image processing.

As shown in FIG. 3, the tester vehicle speed, the camera vehicle speed, and the ECU vehicle speed can all be converted into speed (km/h) for comparison. In the test results shown in FIG. 3, the ECU vehicle speed was almost the same as the camera vehicle speed, and the tester vehicle speed showed lower values during some running times. As in this example, even if the ECU vehicle speed is correct, there may be a difference from the tester vehicle speed. judgment is also required.

Therefore, after the processing of steps S3 and S5, after or before the processing of step S6, or as a parallel processing, the determination device 15 determines the present value based on the history of the latest ECU vehicle speed and the tester vehicle speed, taking into account the fluctuation tendency thereof. The normality/abnormality of the test equipment is judged, and the judgment result is notified (step S7). It should be noted that the notification of the determination result can be made only when there is an abnormality at least in the test equipment.

In step S7, the judging device 15 judges whether the test apparatus is normal or abnormal by referring to the information recording the trend of variation in the difference between the tester vehicle speed and the ECU vehicle speed when the measurement is normally performed. That is, the determiner 15 refers to the recorded information, and if the newly acquired difference is outside the normal range determined based on the trend of variation of the recorded difference, the test device is abnormal. to be notified. Note that the determination in step S7 can also be performed, for example, by taking a moving average for one day and adopting the moving average value for the past one day as the newly acquired difference.

For example, the determiner 15 determines that the newly acquired difference is normal when the variation follows the past transition (same as the past transition), and determines that it is abnormal when the difference deviates from the past transition. It is determined that it is suspected and requires a detailed investigation, and is notified as a target for detailed investigation. Further, the determiner 15 determines that there is an abnormality (suspension of production) when it deviates from the control values defined by the upper control limit and the lower control limit, and notifies it as an abnormality (for example, subject to maintenance including calibration).

The abnormality detection process ends when the processes of steps S6 and S7 are completed. It will be implemented every time. Moreover, although this test apparatus can be configured as a power test apparatus exclusively for the same type of vehicle, it is not excluded that it is used for vehicles of different types.

Next, referring to FIG. 4, the normal range determined by this testing device will be described. FIG. 4 is a schematic diagram for explaining an example of the normal range determined by this testing device.

In FIG. 4, the horizontal axis represents the number of days elapsed since the day the initial calibration or maintenance was completed, and the vertical axis represents the difference between the tester vehicle speed and the ECU vehicle speed. shows the results. The results are statistical values (maximum, minimum and average values in this example) obtained by statistically processing the difference values in tests conducted on a plurality of test vehicles C of the same model type on a daily basis.

The normal range is desirably set to a range narrower than the range for judging abnormality of the test vehicle C (the allowable range of the difference value defined by the control upper limit value and the control lower limit value in FIG. 4). For example, although not shown, the normal range can be set as 70% of the allowable range. As a result, it is possible to detect and report an abnormality in the testing apparatus before an abnormality in the test vehicle C is detected due to the abnormality in the testing apparatus.

In addition, the normal range is determined based on the variation trend of the recorded difference, but the variation trend used to determine the normal range is an example of a case where the measurement can be performed normally. Alternatively, only the fluctuation trend from the time when the maintenance is completed to the time after the elapse of a predetermined period of time can be used. As a result, the normal range is maintained in the same range after the lapse of the predetermined period of time, making it easier to determine whether the test apparatus is abnormal.

As described above, the present testing apparatus can accurately detect an abnormality of the present testing apparatus regardless of the difference in the length of test time for each test. More specifically, first, the difference measured by this testing device gradually fluctuates within a permissible level after the calibration of this testing device. Therefore, it is possible to record the fluctuation tendency of the difference when this test apparatus is operating in a normal state.

Then, after recording the variation trend with this test device, if the test device is calibrated again and measurement is started, it is expected that the variation trend of the recorded difference will change in the same way as long as it operates normally. . In other words, if the newly obtained difference is out of the range expected from the fluctuation tendency of the recorded difference, it can be estimated that there is some abnormality in the testing device such as the inspection device 11 . According to such a method, even if the test time per test changes, the tendency of the difference does not change. Therefore, the abnormality of the test apparatus can be detected with high accuracy regardless of the length of the test time.

In order to further explain such effects, a comparative example will be given.
As Comparative Example 1, an inspector visually adjusts the speedometer to a constant vehicle speed, maintains that state or gives an inspection trigger by external input, and compares the vehicle speed of the inspection device at that time with the display of the vehicle speedometer. There is a test method for checking correctness. However, in the inspection method according to Comparative Example 1, if the inspector makes a mistake in adjusting the vehicle speed at the time of inspection, there is a risk that the inspection will be performed at the wrong vehicle speed and defective products will be released to the market. Another issue is the number of man-hours required for training to maintain skills.

As another comparative example 2, a camera was attached so as to photograph the speedometer and tachometer on the instrument panel of the test vehicle, and the image captured by the camera was subjected to image processing to determine the operating state of the speedometer and tachometer. may be detected and inspected for normality/abnormality. Compared to Comparative Example 1, Comparative Example 2 reduces the risk of defective products being distributed to the market because it does not rely on human work. Therefore, productivity deteriorates.

In addition, in both cases of Comparative Examples 1 and 2, the correctness of the tester is guaranteed by regular inspections, such as once a month. Even if a deviation occurs in measurement, a large deviation can be detected by inspection NG, but a small deviation is difficult to notice. As a result, there is a risk that the pass/fail judgment is made in the inspection while the discrepancy occurs, and the defective vehicle is erroneously distributed to the market. In other words, in both Comparative Examples 1 and 2, periodic inspections can be considered as a method of guaranteeing the correctness of the vehicle speed detected by the tester, but the accuracy of the tester during that period cannot be guaranteed. do not have.

On the other hand, in this embodiment, in this test device, the trend of vehicle speed recognized by the vehicle (ECU vehicle speed) and the vehicle speed of the inspection device is managed to constantly check whether there is any deviation from the timing of the regular inspection. It becomes possible to inspect the vehicle while monitoring the side. Therefore, in this test apparatus, the inspection accuracy of the ECU vehicle speed can be guaranteed as compared with the comparative examples 1 and 2.

(others)
A part of the processing in this test apparatus described above can be implemented as a computer program, as illustrated by the control computer that can execute the program for the determiner 15 . This program is a program for causing a computer that performs a power test of a vehicle to execute processing. In the above process, the measured vehicle speed, which is the vehicle speed obtained by measuring the rotation of the wheels of the test vehicle, and the controlled vehicle speed, which is the vehicle speed obtained from the electronic control unit provided in the test vehicle, are inputted, Abnormal vehicle speed recognized by the electronic control unit of the test vehicle is detected based on the vehicle speed and the controlled vehicle speed. Further, the process records the fluctuation tendency of the difference between the measured vehicle speed and the controlled vehicle speed when the measurement is normally performed, and the newly acquired difference is determined based on the recorded fluctuation tendency. If it is outside the normal range, an anomaly in the power test is reported. With such a configuration, the program can accurately detect an abnormality in the power test regardless of the difference in the length of test time for each test.

This program includes instructions (or software code) that, when read into a computer, cause the computer to perform one or more of the functions described in the embodiments. The program may be stored in a non-transitory computer-readable medium or tangible storage medium. By way of example, and not limitation, computer readable media or tangible storage media may include random-access memory (RAM), read-only memory (ROM), flash memory, solid-state drives (SSD) or other memory technology, CDs -ROM, digital versatile disc (DVD), Blu-ray disc or other optical disc storage, magnetic cassette, magnetic tape, magnetic disc storage or other magnetic storage device. The program may be transmitted on a transitory computer-readable medium or communication medium. By way of example, and not limitation, transitory computer readable media or communication media include electrical, optical, acoustic, or other forms of propagated signals.

It should be noted that the present invention is not limited to the above embodiments, and can be modified as appropriate without departing from the scope of the invention.

For example, this test apparatus is not limited to the illustrated example, and for example, the facility control panel 12, the ECU information receiver 14, and the determination device 15 may be physically configured as a single apparatus, or may function in a manner other than the illustrated example. can also be configured with a plurality of distributed devices.

Moreover, the configuration of this test apparatus is not limited to the one shown in the example, and it is sufficient if the function can be achieved. Also, the inspector U may be a robot instead of a person, and even if the test vehicle C is an automatically driven vehicle that does not require the inspector U, it can be inspected in the same way.

Also, by connecting the front and rear drum shafts of the inspection device 11 and attaching tachometers to both of them to monitor the difference in the number of rotations between the front and rear drums, the abnormality of the tachometer can be detected.

In addition, in this test device, by comparing the ECU vehicle speed, which is the speed recognized by the vehicle, and the tester vehicle speed, which is the speed measured by this test device, taking into account the history, the test device (that is, the inspection equipment side) is provided with a configuration for determining normality/abnormality. However, the vehicle power test device is configured not to make such a determination, that is, the speed meter is inspected (normal/abnormal determination) by directly comparing the speed recognized by the vehicle and the speed measured by the power test device. can also be configured to perform Also in this case, it is preferable to configure the power testing apparatus so as to be able to set a criterion for judging whether the speedometer is normal or abnormal.

With this configuration, keeping the vehicle speed of the test vehicle constant depends on the work (skill) of the inspector, but the vehicle speed recognized by the vehicle (ECU vehicle speed) and the vehicle speed of the tester (tester vehicle speed) are compared. By doing so, it is possible to perform reliable and accurate inspections without causing variations in human work. In addition, since the ECU vehicle speed is not limited to the constant vehicle speed maintained by the inspector as described above, information can be obtained over the entire vehicle speed range during driving, so it is possible to inspect the vehicle speed over the entire vehicle speed range. The inspection that reads the vehicle speed at the speed of the vehicle eliminates the need for inspector training.

C test vehicle U inspector 11 inspector 12 facility control panel 13 ECU information transmitter 14 ECU information receiver 15 determiner

Claims (6)

Based on the measured vehicle speed, which is the vehicle speed obtained by measuring the rotation of the wheels of the test vehicle, and the controlled vehicle speed, which is the vehicle speed obtained from the electronic control device provided in the test vehicle, the electronic A vehicle power test device that detects vehicle speed abnormalities recognized by a control device,
recording the fluctuation trend of the difference between the measured vehicle speed and the controlled vehicle speed when the measurement is normal;
If the newly acquired difference is outside the normal range determined based on the recorded variation trend, an abnormality of the power testing device is reported.
Vehicle power test equipment. The normal range is defined as a range narrower than the range for judging abnormality of the test vehicle,
The vehicle power test apparatus according to claim 1 . A vehicle power test device inputs a measured vehicle speed, which is a vehicle speed obtained by measuring the rotation of the wheels of the test vehicle, and a controlled vehicle speed, which is a vehicle speed obtained from an electronic control device provided in the test vehicle. ,
The power testing device detects an abnormality in the vehicle speed recognized by the electronic control device of the test vehicle based on the measured vehicle speed and the controlled vehicle speed;
The power testing device records the fluctuation trend of the difference between the measured vehicle speed and the controlled vehicle speed when it can be measured normally,
If the newly acquired difference is outside the normal range determined based on the recorded variation trend, the power testing device notifies an abnormality of the power testing device;
An abnormality detection method for a vehicle power test device. The normal range is defined as a range narrower than the range for judging abnormality of the test vehicle,
4. The abnormality detection method for a vehicle power testing device according to claim 3. In the computer that performs the dynamic test of the vehicle,
Input the measured vehicle speed, which is the vehicle speed obtained by measuring the rotation of the wheels of the test vehicle, and the controlled vehicle speed, which is the vehicle speed obtained from the electronic control device provided in the test vehicle,
detecting a vehicle speed abnormality recognized by the electronic control unit of the test vehicle based on the measured vehicle speed and the controlled vehicle speed;
recording the fluctuation trend of the difference between the measured vehicle speed and the controlled vehicle speed when the measurement is normal;
If the newly acquired difference is outside the normal range determined based on the recorded variation trend, an abnormality in the power test is reported.
A program for executing a process. The normal range is defined as a range narrower than the range for judging abnormality of the test vehicle,
6. A program according to claim 5.

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