基于FPGA的高精度电流实时监测系统设计  

Design of High-precision Current Real-time Monitoring System Based on FPGA

作　　者：杨鸥宁 岳凤英[1] 岳妮 

机构地区：[1]中北大学计算机与控制学院,太原030051 [2]内蒙古蒙东能源鄂温克电厂,呼伦贝尔021000

出　　处：《自动化与仪表》2016年第2期69-72,共4页Automation & Instrumentation

基　　金：山西省青年基金项目(2012021013-6)

摘　　要：针对多个传感器同时工作时普通仪器仪表监测工作电流和传感器输出信号繁琐不便的问题,设计了一种基于FPGA的高精度电流实时监测系统。以MAX9918为核心的测流转换模块将传感器工作电流信号转换放大为电压信号。以FPGA作为数据采集转发的核心控制器实现A/D转换、模拟开关切换、数据编帧及监测数据实时上传的功能等。经验证,该系统工作稳定可靠、实时性好、监测精度高。A high-precision current monitoring system which was designed to solve the cumbersome problem of using common instruments to monitor the sensor working current and output signal based on FPGA. The MAX9918 was used as the core device of current conversion module to convert and amplify sensor working current to voltage signal. The FPGA was used as the core device of conversion device to achieve the following functions,the A/D conversion, analog plexers switch,data coding and the transmission control of real-time monitoring data and so on. The system has been proved to work stably with good instantaneity and high monitoring precision.

关 键 词：MAX9918 FPGA 电流监测 数据采集 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]