【摘要】：在煉鋼工業(yè)中,鋼水溫度控制直接體現(xiàn)煉鋼流程控制的發(fā)展水平,而中間包鋼水溫度的測(cè)量和控制不容忽視。它直接影響連鑄坯的質(zhì)量和連鑄板坯凝固位置,有效降低成本,保證煉鋼流程的順利進(jìn)行。在現(xiàn)場(chǎng)條件下,鋼包散熱、鋼液表面渣層、包內(nèi)吹氬氣等均會(huì)對(duì)中間包的溫度產(chǎn)生影響。為實(shí)時(shí)了解連鑄過(guò)程中中間包的溫度變化,需要?jiǎng)討B(tài)的對(duì)鋼水的溫度進(jìn)行精確監(jiān)測(cè)。依據(jù)裝置測(cè)得的精確的鋼水溫度,最終通過(guò)等離子加熱的措施保證中間包鋼水溫度的穩(wěn)定。本課題的鋼水信號(hào)處理器是基于中間包溫度的檢測(cè)而設(shè)計(jì)的,主要的研究?jī)?nèi)容為：研究紅外理論,設(shè)計(jì)系統(tǒng)軟件和硬件,提出測(cè)量方法并驗(yàn)證,采集數(shù)據(jù)并作分析處理。本系統(tǒng)基于雙處理器設(shè)計(jì),主要包括兩部分,一部分為信號(hào)采集部分。該部分分為電源板和信號(hào)采集板,可實(shí)現(xiàn)電源供電、弱電流信號(hào)采集以及環(huán)境溫度檢測(cè)等,具有體積小,與測(cè)溫探頭實(shí)現(xiàn)一體化,有效減少干擾的優(yōu)點(diǎn)；另一部分為主控制部分,實(shí)現(xiàn)數(shù)據(jù)的實(shí)時(shí)接收、LCD顯示、存儲(chǔ)以及GPRS遠(yuǎn)程網(wǎng)絡(luò)傳輸?shù)�。在測(cè)量方法上利用間接切換電路方法并以數(shù)據(jù)擬合和軟件補(bǔ)償?shù)姆绞竭M(jìn)行鋼水溫度檢測(cè)。通過(guò)總體的電路設(shè)計(jì)和系統(tǒng)的調(diào)試運(yùn)行,完成了各部分主要的功能；最后經(jīng)過(guò)大量的數(shù)據(jù)處理和分析,完成了信號(hào)采集部分的弱電流精度為≤2‰(1400～1600℃高溫段)；≤5‰(1000～1400℃低溫段)的指標(biāo)。同時(shí),解決了信號(hào)處理器和上位機(jī)的動(dòng)態(tài)IP地址連接的問(wèn)題。該信號(hào)處理器的設(shè)計(jì)最終實(shí)現(xiàn)穩(wěn)定運(yùn)行,功能相對(duì)完善,基本能夠滿足現(xiàn)實(shí)的需要,能夠?qū)崟r(shí)監(jiān)測(cè)鋼水溫度。
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[Abstract]:In steelmaking industry, molten steel temperature control directly reflects the development level of steelmaking process control, but the measurement and control of tundish molten steel temperature can not be ignored. It directly affects the quality of continuous casting billet and the solidification position of continuous casting slab, effectively reduces the cost and ensures the smooth progress of steelmaking process. Under field conditions, the heat dissipation of ladle, slag layer on molten steel surface and argon blowing in ladle will affect the temperature of tundish. In order to understand the temperature change of tundish in continuous casting process in real time, it is necessary to monitor the temperature of molten steel dynamically. According to the accurate molten steel temperature measured by the device, the temperature of molten steel in tundish can be guaranteed by plasma heating. The molten steel signal processor is designed based on the detection of tundish temperature. The main research contents are as follows: studying infrared theory, designing system software and hardware, putting forward measurement method and verification, collecting data and analyzing and processing. The system is based on dual-processor design, including two parts, one of which is signal acquisition. This part is divided into power supply board and signal acquisition board, which can realize power supply, weak current signal acquisition and environmental temperature detection, which has the advantages of small volume, integration with temperature measurement probe and effectively reducing interference. The other part is the main control part, which realizes real-time data reception, LCD display, storage and GPRS remote network transmission. In the measurement method, the indirect switching circuit method is used to detect the temperature of molten steel by data fitting and software compensation. Through the overall circuit design and the debugging operation of the system, the main functions of each part are completed. Finally, through a large number of data processing and analysis, the weak current accuracy of the signal acquisition part is 鈮，

本文編號(hào)：2511816