JP2001278051A - Automatic test device for railway rolling stock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic test device easily installed and removed, synchronously and automatically providing measurement data of good quality, measuring without enlarging the device, even if the number of measurement target signals is increased, and facilitating the handling of the measurement data. SOLUTION: A speed terminal 11a for counting the number and frequency of pulses is connected to a speed generator provided in the front rolling stock, terminals 12a-12f converting the sensor signals into digital ones and recording them are connected to respective sensors detecting the current and voltage fed to the devices of the respective rolling stocks, the speed terminal 11a and the respective terminals 12a-12f are connected to a test device 20 by one bus line 25a and 25b respectively so that a preset measurement section is detected by the signal obtained from the speed terminal 11a and the start and the end of the data recording are commanded to the respective terminals 12a-12f.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic test apparatus for a railway vehicle, and more particularly to a test apparatus for checking the performance of a railway vehicle after manufacturing or remodeling.

[0002]

2. Description of the Related Art After a railway vehicle is manufactured, various measuring instruments are arranged in the vehicle, and running characteristics, main motor current, overhead wire voltage,
Car tests for vibration and noise. In the conventional vehicle test, a sensor and a measuring device are arranged on a device to be measured of each formed vehicle, and measurement start and end are signaled to a measurer of each vehicle by an in-vehicle broadcast to obtain measurement data. This method
Although very simple, it requires not only a measurer for each vehicle, but also difficulty in synchronizing the measurement data of each vehicle.

Therefore, as shown in FIG. 4, a testing machine 2 is provided at one place (for example, the leading car) of a train, and each vehicle 1
The signal lines 5 are individually wired from the sensors at the measurement points a and 1b, recording start / end signals are given from the testing machine 2 to obtain data, and a test is performed by one measurer 3. I have. In addition, the signal line 5 has shown the state connected to the sensor which measures the electric current of the main motor, and the signal line 4 has shown the state connected to the sensor which measures overhead wire voltage.

[0004]

However, in such a conventional vehicle test apparatus, it is easy to synchronize measurement data of each vehicle, but a large number of signal lines are connected to sensors arranged in each vehicle. It takes a lot of time to prepare for the test and remove it after the test. In addition, there is a problem that the signal is unavoidably transmitted over a long distance, and the quality of the test data is impaired due to the entry of noise or the like.

If the target signal such as vibration requires high-speed processing, the number of signals increases and the demand for the processing capability of the testing machine increases dramatically, resulting in an increase in the size of the testing machine and cost. However, there is a problem that not only is the bulk increased, but also it takes time to install and remove. In addition, when a device to be measured is added or changed, a signal line is also added to each vehicle for wiring, which is complicated and requires a lot of time.

In order to cope with this, it is conceivable to arrange a tester for every two or three vehicles, but in this case, there is a drawback that it is difficult to synchronize measurement data. Furthermore, it takes a lot of time to organize the collected measurement data, and especially when a specific point or a measurement part is desired to be viewed, it cannot be easily extracted, and improvement is desired.

Accordingly, the present invention provides a simple and easy to install and remove, high-quality measurement data is automatically obtained in synchronization, and even if the number of signals to be measured increases, the measurement can be performed without increasing the size of the apparatus. It is an object of the present invention to provide an automatic test apparatus which can perform measurement data easily.

[0008]

In order to achieve the above object, the present invention employs the following means. That is, a speed terminal that counts the number of pulses and a period is connected to a speed generator provided in the leading vehicle, and a sensor signal is digitally converted into each of the current and voltage sensors attached to the equipment of each vehicle. A terminal to be recorded is connected, the speed terminal and each terminal are connected to a testing machine by one bus line, and a preset measurement section is detected by a signal obtained from the speed terminal to each terminal. It is characterized in that data recording start and end are instructed.

This automatic test apparatus inputs a section for taking pre-planned measurement data to a test machine, and automatically records data in each terminal at the same time based on current position information periodically obtained from a speed terminal. A start command is issued, an end command is issued after traveling in a predetermined section, and thereafter, the measurement data recorded in each terminal device is sequentially transmitted to the test device via a bus line.

The speed terminal may be one which counts the number and period (time between pulses) of the pulses of the speed generator and transmits them to the tester. An operator is provided to determine the current position from the wheel diameter and the reduction ratio. You may make it calculate and transmit it to a test machine. In addition, the terminal provided corresponding to each sensor can convert analog data such as current, voltage, frequency, and the like into digital data and record it, and may have a small recording capacity. It is desirable that the terminal is provided as close as possible to the sensor so that noise does not enter the terminal.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment shown in the drawings. As shown in FIG. 1, the trains are composed of leading cars 10 a, 10 f and intermediate cars 10 b, 10 c, 1.
The test machine 20 is provided on an intermediate vehicle 10d, which is composed of 0d and 10e, and is substantially intermediate between the trains. Then, the terminals 12a, 12a are located near the sensors provided on the measurement target of each vehicle.
b, 12c, 12d, 12e and 12f, and speed terminals 11a and 11b on the leading cars 10a and 10f. These terminals are connected to one bus line 25a, 25b connected to the tester 20, respectively.

In FIG. 1, the terminals 12a to 12f are provided for measuring the current of the main motor as an example. Although not shown, eddy current brake current, overhead wire voltage, vibration acceleration, Terminals such as noise will be installed for each target. That is, one terminal is provided for one of the sensors to be measured and connected to the bus lines 25a and 25b.

As shown in FIG. 2, each of the speed terminals 11a and 11b comprises a waveform shaping circuit 13, a pulse counter 14a, a period counter 14b, an operator 15, and an input / output unit 16, and is used as an axle or a final reduction gear. A speed pulse signal is input from an attached speed generator, the signal is counted, the time between pulses is measured, and the operator 15 calculates the traveling distance from the starting point based on the wheel diameter and the gear reduction ratio. Bus lines 25a, 25b based on a read command from
Output to Note that one of the speed terminals 11a and 11b is used.

As shown in FIG. 3, each of the terminals 12a to 12f is a simple one comprising a digital converter 17 for converting an analog signal into a digital signal, an input / output unit 18, and a buffer 19 for storing measured data. The storage capacity used is as small as about 2M.

The test machine 20 comprises a test execution device 21 and a data processing device 22. The test execution device 21 periodically obtains current position information from the speed terminals 11a and 11b,
In addition, it has a function of issuing a command to start and end data recording to each of the terminals 12a to 12f, and issuing a command to read out measurement data recorded in each of the terminals 12a to 12f. In the meantime, a test plan such as which device is to be measured can be set.

The data processing device 22 includes terminals 12a to 12a.
In addition to recording the measurement data collected from 12f, software for processing the data is incorporated, and it is possible to determine whether the data is a normal value and to arrange and record the data in a predetermined format. Has functions.

With this configuration, when conducting a vehicle test, a test plan is input to the tester 20 in advance, and the speed terminal 11a at the leading side in the traveling direction of the train is cleared and the vehicle runs. Then, the speed terminal 11a is made to periodically report the current position, and when reaching the section to be measured, a command to start recording is issued to each of the terminals 12a to 12f.

In each of the terminals 12a to 12f,
The recording of the measurement data input from the corresponding sensor and converted into digital data is started in the buffer 19. Recording starts are simultaneously performed in the terminals 12a to 12f at the same time.
When reaching the end point of the section, the tester 20 issues an end command. Each of the terminals 12a to 12 receiving this command
f stops recording in the buffer 19 all at once.

Thereafter, the tester 20 is connected to each of the terminals 12a-1
An instruction to read the recorded measurement data is issued to 2f. Each of the terminals 12a to 12f sequentially outputs the measurement data recorded in the buffer 19 to the bus lines 25a and 25b. The collected data is recorded in the data processing device 22 and processed by analysis software or processing software to determine whether each device is normal and to record the data in a predetermined format.

Further, necessary information such as the state and vibration state of each device in a predetermined section can be easily displayed or printed. In the case where a department to be measured is added, it is only necessary to prepare a terminal for performing the measurement and modify the test plan software incorporated in the testing machine 20.

After the vehicle test is completed, the tester 20, the terminals 12a to 12f, the speed terminals 11a and 11b, and the bus lines 25a and 25b are withdrawn. Only, so it is simple and quick.

[0022]

As described above, the automatic testing apparatus for a railway vehicle according to the present invention connects a speed terminal and a terminal for digitally converting and recording sensor signals to each of the sensors, and connects this to one bus line. Connected to the test equipment, and the preset measurement section was detected by the signal obtained from the speed terminal, and the start and end of data recording were instructed to each terminal at the same time. Measurement can be performed in a section in each vehicle synchronously, and installation and withdrawal of the device are simple.
In addition, since the terminal can be installed near the sensor, signal deterioration before the signal is incorporated into the terminal is small. further,
The terminal may be a simple one and can be easily replaced, so that it is possible to quickly add a measurement point or respond to a failure.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an overall configuration of a railway vehicle test apparatus as one embodiment of the present invention.

FIG. 2 is a block diagram illustrating a configuration of the speed terminal.

FIG. 3 is a block diagram illustrating a configuration of a terminal.

FIG. 4 is a block diagram showing a configuration of a conventional railway vehicle test apparatus.

[Explanation of symbols]

1a, 1b Vehicle 2 Test machine 3 Measurer 4 Signal line (for overhead line voltage) 5 Signal line (for main motor current) 10a, 10b, 10c, 10d, 10e, 10f Vehicle 11a, 11b Speed Terminals 12a, 12b, 12c, 12d, 12e, 12f Terminal 13 Waveform shaping circuit 14a Pulse counter 14b Period counter 15 Operator 16 I / O unit 17 Digital converter 18 I / O unit 19 Buffer 20: Test machine 21: Test execution device 22: Data processing device 25a, 25b: Bus line

Claims (1)

[Claims] 1. A speed terminal for counting the number of pulses and a period is connected to a speed generator provided in a leading vehicle, and a sensor signal is supplied to each of a sensor for detecting a current and a voltage attached to a device of each vehicle. A terminal for digital conversion and recording is connected, the speed terminal and each terminal are connected to a tester via a single bus line, and a preset measurement section is detected by a signal obtained from the speed terminal, and each terminal is detected. An automatic test apparatus for railway vehicles, wherein a command to start and end data recording is issued to a terminal.