具有高速远程通信功能的工业ERT系统设计  

Design of industrial ERT system with high-speed remote communication function

作　　者：张金雨[1] 谭超[1] 董峰[1] 

机构地区：[1]天津大学天津市过程检测与控制重点实验室,天津300072

出　　处：《传感器与微系统》2016年第10期93-96,共4页Transducer and Microsystem Technologies

基　　金：国家自然科学基金资助项目(61571321;61227006);天津市科技创新体系及平台建设计划资助项目(13TXSYJC40200)

摘　　要：针对多相流远距离可视化测试问题,提出一种具有高速远程通信功能的工业电阻层析成像(ERT)系统。该系统采用现场单元和主控单元异地光纤高速通信方案,通过光纤收发电路与高速传输协议逻辑设计,实现系统高速远程通信功能。通过现场单元串行采集方案电路设计,使系统结构更加紧凑、可靠性更高。通过现场可编程门阵列(FPGA)数字化信号处理和异步缓存逻辑设计,使系统远程数据采集更为精确完整。通过测试实验和图像重建,验证所建立系统的性能,系统光纤传输线速率达625 Mbps,误码率低于10^(-12),测量重复性和成像速率指标满足工业应用需求,系统具备远程可视化测量能力。Aiming at remote visualization measurement problem of multiphase flow,an industrial electrical resistance tomography（ ERT） system with remote high-speed communication function is designed. The system uses optical fiber high-speed transmission to connect field unit and main control unit,by designing fiber-optic transceiver circuit and high-speed transmission protocol logic,high-speed remote communication function is realized. Through circuit design of serial acquisition scheme in field unit,structure of system is more compact and reliable. Through FPGA digital signal processing and logic design of asynchronous cache,remote data acquisition of system is more complete and accurate. System performance is verified through test experiment and image reconstruction,transmission rate of optical fiber is 625 Mbps and bit error rate is lower than 10^-12,measurement repeatability and imaging rate of system meets industrial application requirement,and the system has remote visualization measurement function.

关 键 词：电阻层析成像系统 异地连接 远程高速传输 结构设计 图像重建 

分 类 号：TP216[自动化与计算机技术—检测技术与自动化装置]