信号轮传感器测试台测控系统开发

Development of the Measurement and Control System for a Signal Wheel Sensor Test-bench

为了检验曲轴信号轮、凸轮轴信号轮与不同传感器组成的整套系统的匹配情况,分析不同安装位置对传感器输出信号的影响,研制了信号轮传感器测试台的测控系统。测控系统由基于16位微控制器的前台控制器和带有高速同步数据采集卡的工控机组成,同步采集磁电式曲轴位置传感器和霍尔式凸轮轴位置传感器的原始信号,以及用于检测齿边缘的两路光电传感器信号和整形后的曲轴位置传感器信号,借助以太网通信接口控制测试台变频电机的运行、停止和实现转速调节。实际测试结果表明,测控系统完全能够满足信号轮与传感器匹配试验的高速、高精度信号采集要求。

In order to examine the matching of a complete sets of system consisting of crankshaft signal wheel, camshaft signal wheel and different sensors, and to analyze the influence of different installation position on sensors signal output, a measurement and control system for the signal wheel sensor test - bench was developed. The system was composed of the foreground controller based on a 16 bit mierocontroller and IPC with a high speed synchronous data acquisition card. The original sig- nals of an inductive crankshaft position sensor and a hall - effect camshaft position sensor, signals of two photoelectric sensors to detect the edge of teeth and shaped crankshaft position sensor signal were acquired synchronously. The running and stopping control and speed regulation of the frequency conversion motor on the test -bed were implemented by means of an Ethernet network communica- tion interface. The practical testing results show that the signal acquisition requirements with high speed and high precision can be fully satisfied for matching tests between signal wheels and sensors.