智能型断路器的多路高速数据采集系统的设计  

Design of Multi-Channel High Speed Data Acquisition System in Intelligent Circuit Breaker

作　　者：杨洋[1] 李钟慎[1] 

机构地区：[1]华侨大学机电及自动化学院,福建厦门361021

出　　处：《低压电器》2013年第24期16-19,共4页Low Voltage Apparatus

基　　金：福建省自然科学基金(2011J01350);福建省厦门市科技计划项目(3502Z20123031);福建省厦门市集美区科技计划项目(20117C02)

摘　　要：为了满足智能型断路器数据采集准确性和快速性的要求,提出一种利用VisualBasic(VB)设计的高速数据采集系统。上位机采用VB高精度性能定时器进行数据采集的设计,利用多路继电器控制电路以及PA90功率放大电路实现多路高速数据信号的采集。多路继电器控制系统可以快速准确实现数据通道的选择,用来控制外界信号源的切换,功率运算放大器电路避免了信号的失真和漂移。试验结果表明,数据采集的速度可达100μs,通过信号调理电路输出电压的纹波较小,使电压信号的误差在允许的范围内,系统具有较高的准确性和快速性,满足数据采集的要求。In order to satify the data acquisition accuracy and rapidity demands of intelligent circuit breaker, this paper introduced a high speed data acquisition system based on VisualBasic. The high precision performance timer and multiple relays control circuit and PA90 power amplifier circuit were introduced in the system to realize the collection of multi-channel high speed data signals. The data channel can be selected to control the external signal source by multiple relays control system fast and accurately. The signal distortion and drift can be avoided by power operational amplifier circuit. The test results show that the speed of the data acquisition can reach 100 μs. The output voltage ripple is small to make the error of the voltage signal be in the allowable range and the system has high accuracy and rapidity to satisfy the requirement of data acquisition precision.

关 键 词：智能型断路器 高速数据采集系统 滤波 失真 漂移 

分 类 号：TM561[电气工程—电器] TP274.2[自动化与计算机技术—检测技术与自动化装置]