High-speed-train dynamic-stress-test real-time data monitoring system based on GPRS data transmission

A real-time data monitoring, high-speed train technology, applied in the field of train data transmission system, can solve the problems of downloading the collected data, affecting the test quality, and changing the service performance, so as to reduce the number of test repetitions, improve the test success rate, and reduce the test cost. Effect

Inactive Publication Date: 2017-08-04

CRRC IND INST CO LTD

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AI-Extracted Technical Summary

Problems solved by technology

[0008] (1) The automatic collection device itself can store a large amount of data. Due to road traffic or train scheduling, testers may not be able to download the collected data for several days or even weeks. During this period, the failure of the sensor will not be able to get feedback in time , which will directly affect the quality of the test

If the signal quality of the test does not meet the requ...

Abstract

A high-speed-train dynamic-stress-test real-time data monitoring system based on GPRS data transmission comprises a data acquisition device, a vehicle-mounted computer, terminal equipment and a GPRS data transmission unit. The data acquisition device is used for collecting train dynamic stress test experiment data. An internal portion of the vehicle-mounted computer is provided with data pre-processing and analysis software used for preprocessing collected data signals so as to acquire a parameter and data to be transmitted. The terminal equipment is provided with monitoring and early warning software used for data recording and abnormal early warning, and generating an instruction. The GPRS data transmission unit is used for transmitting the parameter and the data to be transmitted to the terminal equipment, and simultaneously transmitting the instruction of the terminal equipment to the vehicle-mounted computer, wherein the parameter and the data to be transmitted are processed and acquired in the vehicle-mounted computer.

Application Domain

Transmission systemsRailway vehicle testing

Technology Topic

Data transmissionData recording +13

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Examples

Experimental program(1)

Example Embodiment

[0040] The real-time data monitoring system for train dynamic stress test and test applied by the present invention is mainly composed of four parts: data acquisition equipment, on-board computer, GPRS data transmission unit and terminal equipment, such as figure 2 Shown. Among them, the on-board computer is equipped with data preprocessing software, which is used to preprocess the signal to obtain the parameters to be transmitted; the terminal equipment is equipped with monitoring and early warning software, which mainly realizes data recording and abnormal early warning functions. The data transmission part adopts the commercial GPRS transmission network of China Mobile Communications Company. The system has the advantages of wide network information coverage, low communication cost, strong anti-interference ability and easy programming.

[0041] (1) Data collection equipment

[0042] According to the characteristics of dynamic stress data acquisition, commonly used data acquisition equipment includes IMC, Agilent, eDAQ and other equipment.

[0043] (2) On-board computer

[0044] In the process of collecting data, the data acquisition device transmits sample data to the onboard computer in time periods. The supporting data processing and analysis software in the on-board computer automatically completes the data preprocessing according to the corresponding parameters set by the terminal equipment, and obtains the corresponding monitoring parameters and sample data to be transmitted.

[0045] (3) GPRS data transmission unit (DTU)

[0046] The ZH7000 GPRS data transmission unit (DTU) is an independent module that uses the GSM mobile phone network to send data to remote devices. The DTU can work completely independently. The DTU itself completes the maintenance and detection of the connection link, through RS232/RS485/ TTL level interface can realize data exchange with Internet and remote equipment. The DTU is connected to the vehicle-mounted computer through the RS232 serial port and remains online in the GSM network. Through this transmission unit, the parameters and data in the on-board computer are transmitted to the terminal device, and the instructions of the terminal device can also be transmitted to the on-board computer.

[0047] (4) Terminal equipment

[0048] The terminal equipment is equipped with monitoring and early warning software. The software adopts a modular design concept and can be roughly divided into the following 6 modules, such as image 3 Shown.

[0049] Equipment debugging module: used to test the various functions of the selected GPRS module to ensure that the program can communicate with the module correctly and reliably.

[0050] Data transceiver module: used to send messages in the message queue to the GPRS module through the serial port, and at the same time, write the received information into the monitoring database.

[0051] Early warning module: This module is the core of system data monitoring. The man-machine interface provides settings for custom monitoring lists (including monitoring trigger conditions, alarm information, etc.), as well as setting of system parameters such as monitoring detection cycles and dead pixel detection times. After the monitoring function is turned on, the corresponding data record table in the monitoring database is regularly queried according to the conditions set in the monitoring list. Once the data meets the trigger conditions, the current alarm will be highlighted and recorded.

[0052] Data playback module: For alarm information, it can transmit data samples within the early warning time to the ground monitoring center, and use visualization technology to graphically display the data. The module has functions such as waveform operations and frequency domain analysis, which is convenient The user judges the equipment and train operation from many aspects;

[0053] Data processing module: Data preprocessing is only automatically processed according to the parameters set by the user. After an early warning occurs, the user needs to observe and process the data again to determine the operation of the equipment and train.

[0054] Monitoring database management module: Record real-time monitoring data, and write the monitoring data transmitted by the on-board computer by the monitoring object control software or the third-party data acquisition program. Users can quickly perform storage, query, and data analysis and comparison operations. The alarm module only needs to continuously query whether the data in the corresponding record table of the monitoring database is abnormal according to the set conditions and perform corresponding processing.

[0055] Attached Figure 4 Is attached figure 2 The operation flow chart of the real-time data monitoring system for train dynamic stress test of the present invention is shown. First, debug the system communication module on the terminal device and complete the data preprocessing parameter setting.

[0056] (1) After the system is powered on, the data acquisition device starts to collect data and store it in its own storage medium, and at the same time send sample data to the on-board computer at a certain time interval.

[0057] (2) The supporting software running on the on-board computer will decode the data samples stored in the computer and perform data preprocessing to obtain the key monitoring data needed in fatigue analysis.

[0058] (3) The data obtained by preprocessing is transmitted to the terminal device through the GPRS communication module and stored in the monitoring database.

[0059] (4) The early warning system queries the monitoring database according to the set conditions, and alarms when the trigger conditions are met. Users can process and analyze alarm information and real-time data, determine the equipment and train operation conditions, and take corresponding measures.

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Classification and recommendation of technical efficacy words

Improve test success rate

High-speed-train dynamic-stress-test real-time data monitoring system based on GPRS data transmission

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Image

Examples

Example Embodiment

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Description & Claims & Application Information

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