【摘要】：高爐爐壁冷卻系統(tǒng)是現(xiàn)代高爐爐體不可或缺的工藝單元,通過對微小水溫差的監(jiān)測實現(xiàn)對高爐冷卻壁熱負荷狀態(tài)的實時分析,從而判斷高爐爐內(nèi)生產(chǎn)狀況,最終延長高爐使用壽命。本文以某煉鐵廠高爐軟水密閉循環(huán)冷卻系統(tǒng)為研究對象,將嵌入式技術(shù)與無線通信技術(shù)的最新研究成果引入到高爐冷卻水溫差監(jiān)測系統(tǒng),在惡劣環(huán)境下高爐安全生產(chǎn)運行中取得了良好的效果,具有廣泛的工程應(yīng)用前景。本文主要研究內(nèi)容和成果如下:一、無線微小水溫差高精度檢測裝置的設(shè)計開發(fā)。裝置包括以CC1110為CPU的無線測溫節(jié)點與數(shù)據(jù)采集終端,采用SimpliciTI網(wǎng)絡(luò)通信協(xié)議解決了現(xiàn)有檢測裝置存在的高溫電纜消耗大、維護難度大等缺點;采用穿透能力較強的433M通信頻段解決了高爐現(xiàn)場的障礙物阻隔問題,實現(xiàn)無線網(wǎng)絡(luò)穩(wěn)定;通過軟件設(shè)計實現(xiàn)了無線測溫節(jié)點的低功耗;結(jié)合AD7799與Pt1000的工作特性設(shè)計了比率雙電橋溫度采集電路和自適應(yīng)漸消Kalman濾波,保證裝置最大誤差不高于0.02℃,為目前國內(nèi)同系統(tǒng)中較高水平,滿足高爐現(xiàn)場生產(chǎn)需求。二、無線測溫節(jié)點的狀態(tài)分析設(shè)計。本文設(shè)計了可安裝在現(xiàn)場的ARM協(xié)調(diào)器,協(xié)調(diào)器通過RS485通信方式采集無線測溫節(jié)點數(shù)據(jù),其內(nèi)置實時曲線顯示、節(jié)點電量檢測及節(jié)點通信質(zhì)量評估等功能,方便現(xiàn)場工人查看無線節(jié)點工作狀態(tài),進而提高工作效率,對于取代傳統(tǒng)的高爐冷卻水檢測裝置具有重要意義。三、對無線微小水溫差監(jiān)測系統(tǒng)進行了實驗及現(xiàn)場測試。結(jié)果表明,該系統(tǒng)測量精度高、無線通信質(zhì)量穩(wěn)定可靠、節(jié)點功耗低及協(xié)調(diào)器界面友好,滿足高爐現(xiàn)場生產(chǎn)需求,在工業(yè)控制領(lǐng)域具有廣闊的應(yīng)用前景。
[Abstract]:The blast furnace wall cooling system is an indispensable process unit of modern blast furnace body. By monitoring the tiny water temperature difference, the real time analysis of the heat load state of the blast furnace cooling stave is realized, so as to judge the production status of the furnace. Finally, the service life of blast furnace is extended. In this paper, the latest research results of embedded technology and wireless communication technology are introduced into the temperature difference monitoring system of blast furnace cooling water, taking the closed cycle cooling system of blast furnace soft water in a certain ironmaking plant as the research object. The blast furnace has achieved good results in the safe operation of blast furnace under the bad environment, and has wide engineering application prospect. The main contents and achievements of this paper are as follows: first, the design and development of wireless micro water temperature difference high precision detection device. The device consists of wireless temperature measurement node and data acquisition terminal with CC1110 as CPU, and SimpliciTI network communication protocol is used to solve the shortcomings of the existing detection devices such as high temperature cable consumption and difficult maintenance. The 433m communication frequency band with strong penetration ability is used to solve the barrier problem in blast furnace field, and the wireless network stability is realized, and the low power consumption of wireless temperature measurement node is realized by software design. Combined with the working characteristics of AD7799 and Pt1000, the temperature acquisition circuit of ratio double bridge and adaptive fading Kalman filter are designed. The maximum error of the device is not higher than 0.02 鈩，

本文編號：2257059