EPICS环境下数字超声流量计网络接口设计与应用  

Digital ultrasonic flowmeter network interface design and application in EPICS

作　　者：官龙腾 尹聪聪[1,2] 张宁[1,3] 张福春[1,3] 刘婷[1,2] 李勇平[1,3] 

机构地区：[1]中国科学院上海应用物理研究所嘉定园区,上海201800 [2]中国科学院大学,北京100049 [3]中国科学院核辐射与核能技术重点实验室,上海201800

出　　处：《核技术》2015年第8期31-39,共9页Nuclear Techniques

基　　金：中国科学院战略先导科技专项(No.XDA02010300)资助

摘　　要：针对钍基熔盐堆分布控制系统(Distributed Control System,DCS)中数字超声流量计的实验物理和工业控制系统(Experimental Physics and Industrial Control System,EPICS)网络接入需求,本文提出了一种数字以太网接口设计方案,实现上位机操作员接口(Operator Interface,OPI)层面的流量数据实时监测。硬件使用DM9000以太网芯片,扩展连接到TMS320F28335为控制器的数字化超声流量计平台上。DCS软件设计以超声流量计作为客户端,与运行EPICS服务器程序的上位机构成客户端/服务器结构,自检结果表明,二者之间可进行可靠的传输控制协议(Transmission Control Protocol,TCP)通信。在流量标定平台上的实际测试进一步验证了超声流量计与上位机实时数据通信的可靠性,实现了EPICS环境下超声流量计的网络化功能。Background： Networking technique is more and more widely integrated into digital instruments that connected with distributed digital control system （DCS）. Purpose： This study aims to achieve direct network connection of a digital ultrasonic flowmeter to Experimental Physics and Industrial Control System （EPICS）. An Ethemet interface for the TMS320F28335-based ultrasonic flowmeter was designed and implemented to realize real-time network communication with EPICS. Methods： The Ethemet chip, DM9000 was employed and extended to the ultrasonic flowmeter platform which was controlled by TMS320F28335. EPICS was configured to client/server architecture where the digital ultrasonic flowmeter was working as client and the uIP TCP/IP stack was integrated for data communication with the Input/Output Controller （IOC） server. The measured real-time flow rate data was dynamically displayed on the Operator Interface （OPI） console by EPICS Camonitor and Control System Studio. Results： Self-checking results showed reliable TCP communication between client and server was performed on the calibration platform. It was further verified by actual measurements on the flow calibration platform that the digital ultrasonic flowmeter realized real-time and reliable communication, which made the ultrasonic flowmeter equipped with networking functionality. Conclusion： This article presents a new digital communication method between the digital ultrasonic flowmeter and EPICS. It accelerates the digital and networking process of the measuring instrument in nuclear reactor.

关 键 词：分布式数控系统 网络接口 TMS320F28335 超声流量计 DM9000 

分 类 号：TL332[核科学技术—核技术及应用]