Rife和Quinn算法在多通道数据采集系统中的应用研究  

Applying Rife and Quinn Algorithm to Multi-channel Data Acquisition System

作　　者：李翔 袁仲云 桑胜波 Li Xiang;Yuan Zhongyun;Sang Shengbo(College of Information and Computer Engineering, Taiyuan University of Technology, Taiyuan 030006, China)

机构地区：[1]太原理工大学信息与计算机学院

出　　处：《机械科学与技术》2019年第6期930-935,共6页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家自然科学基金项目(51622507)资助

摘　　要：针对传统振弦式传感器采集系统精度低,通道数少,实时性差的缺点设计了一种基于ARM和AD9833多通道数据采集系统。该系统将采集调理电路、数据存储、电源供电集成化,具备精度高,实时性强等特点。系统以ARM处理器为核心,结合改进的Rife和Quinn算法对经过FFT变换后的信号得到精确频率,并根据输出信号频率与待测量之间关系进行计算,系统将计算处理后的数据通过无线或有线传输方式将监测数据传输至监测后台,实现实时在线监控监测点的相关信息,上位机解析显示数据并存入数据库。分析实验数据可知,该采集系统与传统采集系统相比精确度更高,采集速度更快,能够提高振弦式传感器的实用性。To improve the poor real-time performance of the data acquisition system of a traditional vibrating string sensor and increase the number of its channels, a multi-channel data acquisition system was designed based on ARM and AD9833;then it can integrate, collect and adjust the circuit, data storage and power supply of the acquisition system. Centering on the ARM, the system uses the Rife and Quinn algorithm to figure out the frequency according to the relationship between the value to be measured and the output signal frequency to be calculated. The acquisition system realizes the real-time online monitoring of performance information and uses the GPRS or cables to complete data transmission. The data was displayed on PC visual and deposited in the database. The data analysis results show that the acquisition system, compared with the traditional acquisition systems, has a higher accuracy and improves the practicability of the vibrating string sensor.

关 键 词：ARM 振弦式传感器 Rife-Quinn算法 数据采集分析 

分 类 号：TN710[电子电信—电路与系统]