Urban rail train braking performance testing system
A technology for urban rail trains and detection systems, applied in railway vehicle testing and other directions, can solve problems such as inability to integrate, errors, and inability to use independent
Active Publication Date: 2017-02-22
CRRC QINGDAO SIFANG ROLLING STOCK RES INST
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Problems solved by technology
[0017] (1) There are defects in speed detection by relying on the speed sensor installed on the axle, and the calculated instantaneous speed, braking distance, average deceleration and other results of the train have large errors from the actual values.
[0018] (2) Relying on manual operation is time-consuming and labor-intensive and introduces errors, resulting in large errors and poor consistency
[0019] (3) Various performance parameters are measured separately, which cannot be integrated on a time axis, and the data curves cannot be observed in real time, which is inconvenient for analysis and research, and it is impossible to store data and playback curves
[0020] (4) The test is mainly carried out by the brake system supplier, which basically relies on the train's own uncalibrated sensors to obtain data, and cannot be carried out by an independent third party using independent equipment
Method used
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Embodiment Construction
[0047] Such as figure 1 As shown, the braking performance detection system of urban rail trains includes data acquisition equipment, detection host and upper computer,
[0048] The data acquisition equipment includes a Doppler radar sensor installed on the train to collect instantaneous speed and mileage data; a pressure sensor installed at the train brake cylinder is used to collect the pressure value of the train brake cylinder. There are three pressure sensors. , Respectively installed at the train brake control device, bogie 1 and bogie 2, which can collect the brake cylinder pressure values of the train brake control device, bogie 1 and bogie 2 at the same time; acceleration sensor fixed in the carriage , Used to collect the instantaneous acceleration value of the vehicle.
[0049] Such as figure 2 As shown, the detection host includes a switch value acquisition module, which is connected to the train master controller command line to collect commands from the master contro...
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A detection system for city railway train braking performance comprises a data collecting system, a detection host and an upper computer. The data collecting system comprises a Doppler radar sensor, pressure sensors and an acceleration sensor. The detection host comprises a switching value collecting module, an analog quantity collecting module, a data processing and communication module and a power module. The switching value collecting module comprises a switching value input channel and a PWM signal input channel, the analog quantity collecting module comprises a current input channel and a voltage input channel, and the data processing and communication module comprises an RS485 interface, a USB interface, an RS232 interface and a CPU. The detection system, independent of a train system, for the city railway train braking performance is designed, train braking parameters are automatically calculated, the invention further relates to upper computer monitoring software, various performance indexes obtained through calculation are integrated into a timer shaft, graphical and text displaying of the braking performance can be achieved at the same time, and the detection system is visual and convenient and rapid to use, and can store and replay experimental data for convenient analysis.
Description
Technical field [0001] The invention belongs to the technical field of train braking detection, and relates to an automatic detection system for the braking performance of urban rail trains. Background technique [0002] In recent years, the domestic urban rail transit has developed rapidly, and major domestic rail vehicle manufacturing companies are building urban rail vehicles in large quantities for many cities in the country. With the emergence of many new models, it is necessary to carry out a large number of loading and operation tests on trains, and the train braking performance test is one of the most critical tests. [0003] The train braking performance test mainly tests the braking distance, average deceleration, brake cylinder pressure, braking response time, and longitudinal impact rate of the train under different braking levels. The current measurement methods and shortcomings of various indicators are as follows: [0004] 1. Measurement of the instantaneous speed of...
Claims
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IPC IPC(8): G01M17/08
Inventor 赵欣杨乐胡波王令军马春浩
Owner CRRC QINGDAO SIFANG ROLLING STOCK RES INST