基于Modbus/TCP的电容式扭矩传感器数据采集系统设计  

Design of Data Acquisition System of Capacitive Torque Sensor Based on Modbus/TCP

作　　者：蒲明辉[1,2] 赵仁东 黄学创 艾振军[1] PU Minghui;ZHAO Rendong;HUANG Xuechuang;AI Zhenjun(School of Mechanical Engineering,Guangxi University;Guangxi Key Laboratory of Manufacturing System&Advanced Manufacturing Technology)

机构地区：[1]广西大学机械工程学院 [2]广西制造系统与先进制造技术重点实验室

出　　处：《仪表技术与传感器》2024年第1期46-51,共6页Instrument Technique and Sensor

基　　金：广西制造系统与先进制造技术重点实验室基金项目(20-065-40S001)。

摘　　要：扭矩传感器通常安装于机械设备的旋转关节处,用于扭矩的测量。电容式扭矩传感器需要配备专门的数据采集系统才能使用,且数据采集系统的性能直接影响传感器的精确测量。针对实验室自主研制的电容式扭矩传感器的应用需求,设计了一种基于Modbus/TCP协议的数据采集系统。系统以STM32为主控芯片,通过控制电容数字转换芯片AD7147实现电容信号采集与转换,然后由W5500以太网芯片将数据上传到自主开发的上位机软件中进行处理、显示与存储。实验测试表明:系统最大测量误差为1.47%,数据输出频率为1000 Hz。Torque sensors are usually mounted on rotating joints of mechanical equipment to measure the torque.Capacitive torque sensor requires a special data collection system to be used,and the performance of the data collection system directly affects whether the sensor can achieve accurate measurement.A data acquisition system based on Modbus/TCP protocol was designed to meet the application requirements of capacitive torque sensor developed independently by the laboratory.The system took STM32 as the main control chip and controlled the capacitance digital conversion chip AD7147 to collect and convert capacitance signals.Then the data was uploaded by W5500 Ethernet chip to the self-developed upper computer software for processing,display and storage.The test results show that the maximum measurement error of the system is 1.47%,and the data output frequency is 1000 Hz.

关 键 词：数据采集系统 电容式扭矩传感器 MODBUS/TCP STM32 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]