超聲流量計數(shù)字化網(wǎng)絡(luò)通信系統(tǒng)設(shè)計與實現(xiàn)
發(fā)布時間：2018-08-31 17:27
【摘要】：隨著Internet技術(shù)和計算機技術(shù)的快速發(fā)展，網(wǎng)絡(luò)化儀表日益顯示出有別于傳統(tǒng)儀表的優(yōu)越性和便易性，成為現(xiàn)代智能儀表的發(fā)展趨勢。為提高TMSR的安全性，該技術(shù)逐步應(yīng)用于現(xiàn)在反應(yīng)堆中的數(shù)字化分布式儀控系統(tǒng)（DCS）中。 在TMSR的熔鹽回路流量測量時，數(shù)字化的超聲流量計獲得的流量數(shù)據(jù)需要先經(jīng)數(shù)模轉(zhuǎn)換（DAC）成4-20mA模擬量，再經(jīng)PLC的模數(shù)轉(zhuǎn)換（ADC）后才能上傳至DCS網(wǎng)絡(luò)。本文在研制的數(shù)字化時差法超聲流量計樣機的基礎(chǔ)上擴展了以太網(wǎng)接口，將超聲流量計通過該以太網(wǎng)接口直接接入DCS系統(tǒng)網(wǎng)絡(luò)中。由于到TMSR的回路控制系統(tǒng)采用EPICS（Experimental Physics and IndustrialControl System）開發(fā)，，在系統(tǒng)的上位機中設(shè)計采用了相應(yīng)的EPICS數(shù)據(jù)接口，確保數(shù)字超聲流量計與上位機之間按照服務(wù)器/客戶端（Client/Server）結(jié)構(gòu)模式進行有效通信。 在超聲流量計網(wǎng)絡(luò)接口設(shè)計中，采用了DM9000網(wǎng)卡芯片搭建網(wǎng)絡(luò)通信模塊，并使用超聲流量計本身的數(shù)字信號控制器（DSC）TMS320F28335作為網(wǎng)絡(luò)通信的控制器。在DSC上開發(fā)了DM9000的驅(qū)動程序，并移植了用于嵌入式通信的uIP協(xié)議棧，開發(fā)了實現(xiàn)數(shù)據(jù)發(fā)送功能的客戶端程序。在上位機EPICS端，開發(fā)了用于數(shù)據(jù)接收的服務(wù)器程序，并在OPI層設(shè)計了實時流量顯示的界面窗口。另外，在超聲流量計的超聲信號處理時，增加了“Hamming”窗技術(shù)，有效地濾除了超聲信號中的干擾信號。 本文設(shè)計的網(wǎng)絡(luò)通信接口為熔鹽實驗回路中的流量監(jiān)控提供了一個可靠的解決方案，在精簡系統(tǒng)結(jié)構(gòu)的同時實現(xiàn)了穩(wěn)定可靠的測量數(shù)據(jù)傳輸，達到了預(yù)期的設(shè)計目標。
[Abstract]:With the rapid development of Internet technology and computer technology, networked instruments are increasingly showing the superiority and convenience, which is different from the traditional instruments, and has become the development trend of modern intelligent instruments. In order to improve the safety of TMSR, the technology is gradually applied to the digital distributed instrument control system (DCS) in the reactor. In the flux measurement of molten salt loop of TMSR, the flow data obtained by digital ultrasonic Flowmeter need to be converted into 4-20mA analog quantity by digital-analog conversion (DAC), and then transferred to DCS network by PLC analog-to-digital conversion (ADC). In this paper, the Ethernet interface is extended on the basis of the digital moveout ultrasonic Flowmeter prototype, and the ultrasonic Flowmeter is directly connected to the DCS system network through the Ethernet interface. Because the loop control system to TMSR is developed by EPICS (Experimental Physics and IndustrialControl System), the corresponding EPICS data interface is designed in the upper computer of the system. Ensure effective communication between digital ultrasonic Flowmeter and host computer according to server / client (Client/Server) structure. In the design of the network interface of ultrasonic Flowmeter, the DM9000 network card chip is used to build the network communication module, and the digital signal controller (DSC) TMS320F28335 of the ultrasonic Flowmeter itself is used as the controller of network communication. The driver of DM9000 is developed on DSC, the uIP protocol stack for embedded communication is transplanted, and the client program is developed to realize the function of data transmission. The server program for data receiving is developed in the upper computer EPICS, and the interface window for real-time flow display is designed in the OPI layer. In addition, the "Hamming" window technique is added to the ultrasonic signal processing of ultrasonic Flowmeter, which can effectively filter the interference signal from the ultrasonic signal. The network communication interface designed in this paper provides a reliable solution for flux monitoring in molten salt experimental circuit. It can realize stable and reliable measurement data transmission while simplifying the system structure and achieve the expected design goal.
【學(xué)位授予單位】：中國科學(xué)院研究生院（上海應(yīng)用物理研究所）
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TH814
本文編號：2215669
[Abstract]:With the rapid development of Internet technology and computer technology, networked instruments are increasingly showing the superiority and convenience, which is different from the traditional instruments, and has become the development trend of modern intelligent instruments. In order to improve the safety of TMSR, the technology is gradually applied to the digital distributed instrument control system (DCS) in the reactor. In the flux measurement of molten salt loop of TMSR, the flow data obtained by digital ultrasonic Flowmeter need to be converted into 4-20mA analog quantity by digital-analog conversion (DAC), and then transferred to DCS network by PLC analog-to-digital conversion (ADC). In this paper, the Ethernet interface is extended on the basis of the digital moveout ultrasonic Flowmeter prototype, and the ultrasonic Flowmeter is directly connected to the DCS system network through the Ethernet interface. Because the loop control system to TMSR is developed by EPICS (Experimental Physics and IndustrialControl System), the corresponding EPICS data interface is designed in the upper computer of the system. Ensure effective communication between digital ultrasonic Flowmeter and host computer according to server / client (Client/Server) structure. In the design of the network interface of ultrasonic Flowmeter, the DM9000 network card chip is used to build the network communication module, and the digital signal controller (DSC) TMS320F28335 of the ultrasonic Flowmeter itself is used as the controller of network communication. The driver of DM9000 is developed on DSC, the uIP protocol stack for embedded communication is transplanted, and the client program is developed to realize the function of data transmission. The server program for data receiving is developed in the upper computer EPICS, and the interface window for real-time flow display is designed in the OPI layer. In addition, the "Hamming" window technique is added to the ultrasonic signal processing of ultrasonic Flowmeter, which can effectively filter the interference signal from the ultrasonic signal. The network communication interface designed in this paper provides a reliable solution for flux monitoring in molten salt experimental circuit. It can realize stable and reliable measurement data transmission while simplifying the system structure and achieve the expected design goal.
【學(xué)位授予單位】：中國科學(xué)院研究生院（上海應(yīng)用物理研究所）
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TH814
【參考文獻】
相關(guān)期刊論文 前10條
1 劉偉明;杜林;;基于DM9000A和LPC2214的嵌入式以太網(wǎng)接口設(shè)計[J];電子測量技術(shù);2008年06期
2 孟輝;安魯陵;;基于DSP外部擴展總線接口的鍵盤實現(xiàn)方法[J];儀器儀表用戶;2008年01期
3 沈美華;石斌;;高溫超聲波流量計測量可靠性研究[J];化學(xué)工程與裝備;2011年05期
4 雷曉瑜;曹廣忠;;TMS320F28335及其最小應(yīng)用系統(tǒng)設(shè)計[J];電子設(shè)計工程;2009年01期
5 韓超;王可人;;基于DM9000的嵌入式系統(tǒng)的網(wǎng)絡(luò)接口設(shè)計與實現(xiàn)[J];工業(yè)控制計算機;2007年04期
6 丁建國;劉松強;;EPICS系統(tǒng)中的網(wǎng)絡(luò)技術(shù)[J];核技術(shù);2006年05期
7 米清茹;鄭麗芳;劉松強;;EPICS控制系統(tǒng)軟件開發(fā)環(huán)境[J];核技術(shù);2008年01期
8 王力生;梅巖;曹南洋;;輕量級嵌入式TCP/IP協(xié)議棧的設(shè)計[J];計算機工程;2007年02期
9 陳晗鳴;羅威;;嵌入式μCLinux中DM9000設(shè)備驅(qū)動研究與實現(xiàn)[J];計算機工程與科學(xué);2009年05期
10 呂清華;唐慧強;;基于小波的信號到達時間定位方法[J];武漢理工大學(xué)學(xué)報(交通科學(xué)與工程版);2006年05期
本文編號：2215669
本文鏈接：http://sikaile.net/kejilunwen/yiqiyibiao/2215669.html
