JPH0247797B2 - BUNSANGATAJIDOSHIKENSOCHI - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in automatic test equipment, and particularly to automatic test equipment suitable for testing vehicles equipped with a plurality of identical devices.

In addition to testing the insulation resistance of each electrical circuit, automatic testing equipment for railway vehicles can also be used to measure the insulation resistance of each electrical circuit, as well as test the running drive control device (e.g. chip control device), brake device, automatic train control device (ATC) or automatic train operation device (ATO), etc. This is a performance confirmation test. As for this automatic test equipment, so-called distributed type automatic test equipment with functions distributed in contrast to the conventional one using a single computer is used.
This is proposed in Publication No. 126842. That is, a large number of dedicated test execution terminals each having a microcomputer or the like are provided, and test execution commands are given to these terminals from a central processing unit. This distributed automatic test equipment not only reduces the number of wires, but also
Excellent expandability.

By the way, if there are multiple control devices of the same type in one train set, such as the Chiyotsupa control device of the Chiyotsupa train, and there are devices that should be controlled in the same way, it is possible to perform an automatic test. , it is necessary to carry out tests at the same time according to the same directive. In this case, the system configuration between the central processing unit and multiple test execution terminals becomes complicated, and
This has the disadvantage of increasing the burden on the central processing unit and transmission line.

An object of the present invention is to provide an automatic test device that can simplify the system configuration and reduce the burden on the central processing unit and transmission lines.

The present invention is characterized by comprising a central processing unit, a plurality of distributed test terminals, and a loop transmission line connecting these central processing units and each terminal. The present invention includes a switching means for switching and connecting the test execution section and the management section and execution section to the loop transmission path.

With this configuration, when testing multiple devices of the same type at the same time, the management section of one terminal device and the test execution section of multiple terminal devices execute the automatic test and check the test results. can be collectively transmitted from the management section to the central processing unit, and the system configuration can be significantly simplified. In this case, the terminal device is preferably configured with a stored program type computer.

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows an overall configuration diagram of a decentralized automatic test device for vehicles, which is an embodiment of the present invention. Vehicles 1a-1
Equipment installed in d (not shown)
Distributed test terminals 3a to 3d are connected via cables 2a to 2d for the purpose of measuring the performance of .
These distributed test terminals 3a to 3d are connected to the cable 4
a to 4d, data transmission devices 5a to 5d, data transmission line 6, data transmission device 5e, and cable 7, are connected to central processing unit 8, and are under the control of central processing unit 8. Reference numeral 9 denotes a console input/output device, which is essential for an operator to execute a test while interacting with the central processing unit 8. As shown in FIG. 2, the distributed test terminals 3 (3a to 3d) are composed of a data transmission device 31, a digital processing device 32, a test execution device 33, and a connector 34.

As shown in the overall configuration diagram of the book, each distributed test terminal 3a to 3d and each data transmission device 5a to
5e has exactly the same hardware structure and is designed for extensibility and maintainability. When transmitting data, the transmitting terminal 3 (including the central processing unit 8) adds its own code and the code of the receiving terminal (including the central processing unit) to the beginning of the general data. The data is transmitted to all data transmission devices 5a to 5e, but only the relevant data transmission device can take in the data and erase the data from the loop transmission path as appropriate.

FIG. 3 is a diagram illustrating the flow of execution of a single test. That is, the command from the test execution commander 91 is transmitted to the test start processing section 81 in the central processing unit 8,
The test start processing unit 81 gives a test start command to the corresponding distributed test terminal device 3. Test execution processing section 321 in the digital processing device 32 of the terminal device 3
executes the test instructed by the test execution item number storage film 322, and transmits the result to the test start processing section 82 in the central processing unit 8. The results are then stored in the test result storage file 83.

The above illustrates the hardware configuration and the simplicity of a single test method. If only one device is mounted on a vehicle per train, this is sufficient, but in reality, vehicles are often equipped with multiple pieces of the same device. For example, a plurality of chopper control devices are installed in one train set, and they operate simultaneously based on the same command (for example, a notch command for power running or control). If an automatic test is executed based on the conventional concept, the flow will be as shown in FIG. 4. That is, the digital processing devices 32a to 32 in the plurality of distributed test terminals 3a to 3d corresponding to the onboard equipment
Test execution processing units 321a to 321 provided in d
d independently issues the same command to the vehicle, captures the responses of the on-vehicle equipment, and independently transmits the test results to the test result processing unit 82 in the central processing unit 8. This method has a congested data flow, is complex and unreliable. For example, the fourth
Comparing the figure and Figure 3, we can see that the test result processing section 8
2 is a function to receive data sent from the terminal side, but in FIG. It is also necessary to process functions that should be processed as lower-level functions than the original functions, such as processing when information cannot be received. In addition, the function to give commands to the vehicle is
In Fig. 3, processing is performed at one location, whereas
In the figure, each test execution processing unit 321a to
It can be seen that 321d gives the same command, making it unnecessarily complicated.

FIG. 5 is proposed by the present invention and is an improved version of FIG. 4 described above. That is, the conventional test execution processing units 321a to 321d are divided into test execution management units 323a to 323d (323b to 323d are not shown) and test execution units 324a to 324d, and only the test execution management unit 323a is The test execution units 324a to 324
The data of d is transmitted to the test result processing section 82. Therefore, on the central processing unit 8 side, the processing method in FIG. 3 and FIG. 5 may be completely the same. In the figure, the flow of information labeled 6 indicates a portion via the loop transmission line 6.

Figure 6 summarizes these concepts. By dividing and positioning the overall functions in a hierarchical structure at levels _l1 to _l3 , the entire system is organically connected and simplified. be. That is, the distributed test terminals 3a to 3d maintain simplicity by arranging the hardware with exactly the same structure at the same level, and in terms of software, the functions are constructed in a hierarchical structure. The entire system can be summarized in a concise manner.

Furthermore, semi-automatic processing by the distributed test terminal 3 becomes easy. That is, the distributed test terminals 3a to 3d
It is necessary to separate it from the entire system and operate it semi-automatically on its own.

In FIG. 7, the inside of the digital processing device 32 is divided into a test execution management section 323 and a test execution section 324, and a digital processing device in a so-called master terminal device 3a corresponding to the test execution management section 323a in FIG. 32a makes use of the test execution management section 323a,
On the other hand, the digital processing device 32b in the so-called child terminal 3b which is not compatible is switched not to use 323b. When operating independently and semi-automatically, both 323 and 324 are used. Figure 8 shows a more detailed illustration of these relationships.
It is shown in FIG. FIG. 8 shows an example in which a digital processing device 32a is used as a parent terminal. That is, the switching means 325a is switched to connect the data transmission device 5a and the test execution management section 323a. In addition, a digital processing device 3 is used as a child terminal device.
2b is used. For this reason, the data transmission device 5b and the test execution unit 324 in the digital processing device 32b
Switch to connect b. FIG. 9 shows an example in which the device is used alone as a semi-automatic terminal device. 10c
This is a semi-automatic operation console and the test execution management section 323
The switching means 325c is switched to connect the terminal k.

Here, as shown in FIGS. 8 and 9, the flow of the test execution shown in FIG. 5 with the switching means in each terminal device being switched is shown in general flow as shown in FIG. 10. It becomes like this. In step 101, the operator instructs the testing of a plurality of devices of the same type through the operation console 9 shown in FIG. As shown in FIG. 8, the terminal device 3a
Assuming that the switching means 325a has been switched, and the first code of the information indicates this terminal device 3a, this terminal device 3a, as a parent terminal device, receives instructions from the center in step 103. .
That is, the test execution management section 32 in the parent terminal 3a
3a receives the test start command, and in step 104,
A command is given to the on-board device and the test execution unit 324b of the slave terminal 3b. The command to the on-board device is such as to generate a notch command for powering or braking the vehicle, and is transmitted from the management section 323a in the digital processing device 32a of the parent terminal device 3a to the on-board device via the connector 34a. . In addition, for the test execution unit 324b in the digital processing device 32b of the slave terminal 3b, the loop transmission line 6 in FIG.
It is transmitted via the switching means 325b in b.

As a result, in step 105, each test execution unit 3
24a, 324b, etc., and collect measurement data. In step 106, it is determined whether the measurement is completed or not, and if it is not completed, the process returns to step 104 and the measurement is repeated. When the measurement is completed, in step 107, each test execution section 324a, 3
24b, etc., via the loop transmission path 6 as necessary, to the test execution management unit 323a of the parent terminal 3a.
Send test (measurement) results to. Next, in step 108, the test execution management section 32 of the parent terminal 3a
3a summarizes the test results and transmits them to the central processing unit 8, and the test ends.

The above describes the switching means 325a, 325b...
Although the description has been made assuming that each distributed test terminal device 3a to 3d has a stored program type microcomputer, it is preferable to use a stored program type microcomputer. Only the terminal device starts the test execution management program, and the other terminal devices jump this program and start only the test execution program, thereby forming a switching means. However, in this case, hardware such as a jack is required as a switching means for performing semi-automatic testing independently from an external console.

According to the present invention, the system configuration of an automatic test device can be simplified, and the burden on the central processing unit and transmission path can be reduced.

[Brief explanation of drawings]

Fig. 1 is an overall configuration diagram of a vehicle automatic testing device that is an embodiment of the present invention, Fig. 2 is an example of the configuration of its test execution terminal, and Figs. 3 to 5 are for explaining the principle of the present invention. FIGS. 6 to 9 are explanatory diagrams of the system configuration of the present invention, and FIG. 10 is a general flowchart of an automatic test in an embodiment of the present invention. 1, 1a to 1d...vehicle (device under test), 3,
3a to 3d...distributed test terminal, 5, 5a to 5e
...Data transmission device, 6...Loop transmission line, 8...
...Central processing unit, 9, 10a-10c...Console input/output device (operation console), 32, 32a-32
d... Digital processing device (microcomputer etc.), 323, 323a-323d... Test execution management section, 324, 324a-324d... Test execution section, 325, 325a-325d... Switching means.

Claims (1)

[Claims] 1. A central processing unit, a plurality of distributed test terminals,
It consists of a loop transmission line connecting the central processing unit and each distributed test terminal, and each distributed test terminal has a test execution management section, a test execution section, and a loop transmission path between the management section and the execution section. Distributed automatic test equipment comprising switching means for switching connection to the network. 2. In claim 1, the test execution management unit connected to the loop transmission line sends and receives information between the central processing unit and each test execution unit via the loop transmission line, and A distributed automatic test device configured to transmit a test start command received from a processing device to a plurality of test execution units and a device under test, and to transmit test result information received from the plurality of test execution units to a central processing unit. 3. In claim 1, the switching means includes means for switching and connecting the test execution management section to an operator console that directly issues commands to the distributed test terminal without going through the loop transmission path. Distributed automatic test equipment. 4. In claim 1, each of the distributed test terminals constitutes the test execution management section, the test execution section, and the switching means using a stored program computer, and operates according to information received from the central processing unit. Distributed automatic testing equipment comprising a parent terminal that controls the test execution management section or a child terminal that controls only the test execution section.