基于LabVIEW的智能轮速传感器测试系统设计

针对传统的电机驱动机械齿轮来测试轮速传感器的方法存在精度低、重复性差和测试的局限性大等问题，设计了一种基于LabVIEW的智能轮速传感器测试系统。系统采用非机械部件的静态电磁激励传感器的测试方法并创新性地设计了一种旋转磁场发生器模块，可以模拟任意齿轮旋转的转速和方向，实现极低和极高转速下轮速传感器的测试。试验研究表明，设计的测试系统可以实现对智能轮速传感器输出信号的高中低电流值、频率和占空比等功能参数的测试和解析传感器的协议信息，测试的传感器输出频率范围可以达到1~3KHz，提高了测试系统的精度。系统的硬件平台由模块化搭建而成，推广性强；软件采用LabVIEW，简洁的图形化操作界面，方便测试人员对传感器的输出特性监控与分析，适应现代化轮速传感器生产要求。

Design of smart wheel speed sensor test system based on LabVIEW

In view of the problems of low accuracy, poor repeatability and large testing limitations in traditional motor-driven mechanical gear testing methods for smart wheel speed sensors, a smart wheel speed sensor test system based on LabVIEW is designed. The system adopts the static electromagnetic excitation sensor test method of non-mechanical components and innovatively designs a rotating magnetic field generator module, which can simulate the rotation speed and direction of any gear rotation, and realize the test of the wheel speed sensor at extremely low and extremely high speeds. Experimental research shows that the designed test system can test the functional parameters such as the high, medium and low current value, frequency and duty cycle of the output signal of the smart wheel speed sensor and analyze the sensor protocol information. The output frequency range of the tested sensor can reach 1~3 KHz, which improves the accuracy of the test system. The hardware platform of the system is built by modularization and has strong generalizability; the software adopts LabVIEW, simple graphical operation and display interface, which is convenient for testers to monitor and analyze the sensor output characteristics and adapt to the production requirements of modern wheel speed sensors.