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Along with the development of national economy, it is taking a larger and larger proportion in the railroad freight to use the tank car for transportation, and various valves have been installed in the tank car to ensure the safety in the transportation. At present the manual experimental method is mainly adopted in the performance test for various valves in the railroad tank car in our country;only a few units fabricated the experimental facility, but the experiment on the valves is separate, has no microcomputer control function and less stability and reliability. The experiment quality on the valves has direct relation with the working ability and the technical level of the operator, and is not convenient for the control of the experiment quality after the overhaul of valves. Therefore, in order to make the control of quality easier, to enhance the quality of overhauling, to ensure the safe movement of the tank car and reduce the worker’s labor intensity, we need to develop "the microcomputer-controlled valves test platform in railroad tanker " that can have the automatic and microcomputer control of the performance test for the railroad tank car reed valve, under unload the valve, the respiration styles safety valve (light oil tanker) and the respiration styles safety valve (cooking oil, sticks oil truck) strictly according to the railroad freight cart yard section, regulations, and the actual situation of the field overhaul.This article introduces overall plan for the system, the hardware design, the control operation, the software design as well as the entire installment and debugging process. Adopting the front and backstage operate mode, the system can complete the control test independently and the test process automatically or manually according to the given work flow.With the preliminary utilization, this system proves to avoid any mistake in discomposing and overhauling in the test process of the railroad tank car, and at the same time it enhances the accuracy for the valves experiment considerably, reduces the nonessential overhaul and replacement, and thus has considerable economic efficiency and social efficiency.The test platform has the integrated system self-checking function, which guarantees the reliability of each component before the work, the high overallThe test platform has the integrated system self-checking function, which guarantees the reliability of each component before the work, the high overall performance, ensures the accuracy and reliable of the valves experiment, and realizes the transformation from the human control to the machine control. It also guarantees the accuracy of experimental data of railroad tank car valves, improves the overhaul quality, and thus ensures the traffic safety and reduces worker’s labor intensity. Moreover, this test platform has the perfect data access facility, the data report printing function, and reserves the HMIS connection to realize the long range data inquiry and management, and help the field management and quality control, thus it guarantees the safe vehicle movement helps the field management and quality control.
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