摘要
文中介绍了一种基于STM32微控制器的多圈绝对角度传感器,首先分析了磁敏感芯片MLX90316的角度采集原理及输出信号接口,设计了RS485输出型角度传感器的信号采集电路、电源电路、数据通信电路等模块;在硬件系统的基础上开发了传感器的智能化软件,具有单圈14位角度分辨率,测量总圈数不受限制,具有掉电位置记忆功能。搭建了传感器性能测试实验系统,实验结果表明:多圈角度传感器的独立线性精度达到0.039%,测量精度达到0.02°,可以满足工业角位置测量的需求。
A design of multi-circle absolute angular displacement sensor based on microcontroller STM32 was proposed. The angle collecting principle and output signal interface of susceptibility chip MLX90316 were analyzed. The signal acquisition circuit, the power supply circuit and the data communication circuit of output angular sensor RS485 were designed. The intelligent software was developed based on the hardware system. The sensor had advantages such as 14-bit single-loop angle resolution, unlimited measuring range and power-off position memory. The performance experiment of the sensor was carried out. The experimental results indicate that the independent linearity accuracy of the multi-circle absolute angular sensor is 0.039%, and the measurement accu- racy is 0.02 °. The multi-circle absolute angular sensor is very suitable for industrial angle testing application.
出处
《仪表技术与传感器》
CSCD
北大核心
2014年第12期13-14,28,共3页
Instrument Technique and Sensor
