The Research And Realization Of The Measurement And Control System Of The Water Resistance Test System For Diesel Locomotive

Water, resistance test of diesel locomotives is used to process load test after it has been manufactured, overhauled or repaired. The water resistance test is to simulate various working condition of the locomotive with water resistance as load and to check the assembled locomotive for meeting the design requirement according to the results,and to check the parameter of the diesel and the running-in condition of the mechanical wear resestance,and to adjustment relevant parameters of the locomotive and to make sure correct assembly, reliable movement as well as operating safety.This thesis makes meticulous analysis and discussion to the project "The Design of the diesel locomotive water resistance testing system" of the WuHan railway bureau on the basis of on-the-spot investigation and information analysis technical parameter of the diesel locomotive in detail. Directed against the backward state of the original testing equipment, propose and adopt advanced microcomputer control technique, and control technology and test detection technique for the testbed go on technological scheme. On this base, the hardware design and software design of the measurement and control system of the water resistance test system are completed.The hardware of the test system consists of operating platform, data-collection and COM interface communication. Among them, data-collection is the most important part as well as the interface between the system and the tested object (locomotive). Data-collection system mainly consists of sensors, digitals, and industrial control computer (IPC). Its main task is to measure all status parameters of various working conditions. So its quality determines the system's precision and success or failure. In this thesis, the selection rules of parts are analyzed and stated. The working principle of hardware and design idea are introduced.The system's software is programed by C++ Builder 5,it contains 4 main menus such as TEST, PRINT and SCAN. The software has functions of selecting different locomotive types, selecting different test, data collection and processing and printing of test result etc.The study makes a system which has characters such as comprehensive functions, simple operation, safe, reliable, easy and handy. It improves the automation-degree of water resistance test, reduces personal influence, raises the precision of parameters, makes full use of test results and relieves hard manual labor. It achieves obvious technological effects and beneficial result, makes a comprehensive application value and generalizing value. To a certain extent, this system represents the development direction of water resistance of diesel locomotive.