新型地感线圈测速仪检定装置关键技术研究

摘要

介绍了地感线圈测速仪的测速原理,提出了一种利用电流信号作为干扰信号来模拟标准车速的方法.利用ARM9控制板作为主控单元,集成信号处理、电流调节、雷莫接口等各个子模块,最终实现整个检定装置系统.实际试验结果表明,该装置能准确高效地检定各种型号的地感线圈测速仪,值得推广使用.%The speed measuring principle of inductive coil speedometer is introduced, and the method of using current signal as interference signal to simulate standard vehicle speed is proposed. By adopting ARM9 control board as the main control unit to integrate the sub-modules such as signal processing, current regulating, and Lemo interface, etc. , for implementing the calibrating device. The results of practical test indicate that the device can be used to calibrate various types of inductive coil speedometers accurately and efficiently; it is worth to be promoted.