基于电磁感应原理的定位跟踪系统电路设计

Circuit Design of Location Tracking System Based on Electromagnetic Induction Principle

目的针对包装机器人在工程应用中遇到的定位跟踪方面的问题,设计一种新型定位跟踪系统。方法基于电磁感应原理,从硬件电路设计着手设计系统。该系统的激励信号源通过功率放大电路激励发射线圈产生交变磁场,在接收线圈上产生感应信号。通过前级放大、带通滤波和程控放大等电路,实现对感应信号调理。将感应信号的幅值带入磁偶极子模型,计算出传感器的位置信息。结果经实验表明,电磁定位系统的相对定位精度可达1.47 mm。结论基于电磁感应原理的定位跟踪系统可满足包装机器人在定位跟踪方面的要求。

The work aims to design a new location tracking system with respect to the location tracking problems encountered in the application of packaging robot in the engineering. Based on electromagnetic induction principle, the system was designed starting with hardware circuit design. The excitation signal source stimulated transmitting coil to generate an alternating magnetic field through the power amplifier circuit and a corresponding induction signal was generated in the receiving coil. A preamplifier, a band-pass filter and a programmable amplification were also adopted to achieve the induction signal conditioning. According to the amplitude values of the induction signal put into the magnetic dipole model, the position information of the sensor could be calculated. Experiments showed that the relative positioning accuracy of the electromagnetic positioning system was 1.47 mm. Location tracking system based on electromagnetic induction principle can meet packaging robot＇s requirements of location tracking.