基于PLC的汽车电子燃油泵性能检测系统

Testing system of automobile fuel pump performance based on PLC

针对目前无刷电机式汽车电子燃油泵性能检测系统的缺失以及生产过程中燃油泵驱动控制器的质量检验问题,分析了燃油泵运行环境及目前测试方法的不足,以西门子S7-200系列PLC、触摸屏、各种传感器及测试治具为核心部件,运用VB6.0进行了上位机测试软件以及梯形图PLC软件的编写,构建了基于PLC的燃油泵性能在线自动检测系统;在现有已知参数燃油泵的基础上对测试系统进行了验证,得出了系统测试精度以及测试过程中发现的一些常见燃油泵质量问题。研究结果表明,设计的基于PLC的燃油泵自动检测测试系统具有成本较低、测试可靠、使用寿命长、操作方便等特点,对无刷式燃油泵的设计有一定的指导作用。

In order to solve the problems of the weakness of current designed brushless fuel pump detection system and the detection of quali- ty in production process, the test system was investigated. After the analysis of the working principle and test method of fuel pump, the sys- tem was established, which was based on Siemens PLC, touch win, pressure sensor, flow sensor and so on, and the VB6.0 was used to de- sign the computer software,ladder diagram to PLC program. The known parameters fuel pump was evaluated on the test system, the precision and test error of system were determined. The experimental results show that the designed test system has the advantages of high precision, long life, easy to operate, conduce to the design of brushless fuel pump.