本文選題：回轉(zhuǎn)窯　切入點(diǎn)：熱電偶　出處：《湖南大學(xué)》2015年碩士論文

【摘要】：回轉(zhuǎn)窯設(shè)備結(jié)構(gòu)復(fù)雜、在工作過程中要不停旋轉(zhuǎn)，因此對(duì)回轉(zhuǎn)窯內(nèi)部溫度的測(cè)量就存在一定難度。由于數(shù)據(jù)采集系統(tǒng)的應(yīng)用范圍越來越寬，所涉及到的測(cè)量信號(hào)和信號(hào)源的類型越來越多，對(duì)測(cè)量的要求也越來越高，國(guó)內(nèi)現(xiàn)在已有不少數(shù)據(jù)測(cè)量和采集的系統(tǒng)，但很多系統(tǒng)存在功能單一、采集通道少、采集速率低、操作復(fù)雜，并且對(duì)測(cè)試環(huán)境要求較高等問題。本文在分析當(dāng)前各種回轉(zhuǎn)窯溫度測(cè)量方法后，設(shè)計(jì)了一種基于AVR單片機(jī)和無線發(fā)射模塊的8通道無線多點(diǎn)溫度數(shù)據(jù)采集器。該設(shè)備采集溫度方便靈活，測(cè)溫精度高、抗干擾能力強(qiáng)，能進(jìn)行8個(gè)溫度信號(hào)的采集。 本設(shè)備主要用于測(cè)量回轉(zhuǎn)窯內(nèi)各生產(chǎn)工藝帶的溫度，，并與上位機(jī)配合完成窯內(nèi)多點(diǎn)溫度的監(jiān)控。本文分別闡述了溫度信號(hào)采集發(fā)送器和溫度信號(hào)接收器的總體設(shè)計(jì)思路和實(shí)現(xiàn)方法并分析了各部分電路的組成原理，詳細(xì)介紹了系統(tǒng)各模塊的設(shè)計(jì)過程。溫度信號(hào)采集發(fā)送器用熱電偶測(cè)量窯內(nèi)的溫度，將電壓信號(hào)放大后送入微處理器經(jīng)處理轉(zhuǎn)換后變?yōu)閿?shù)字信號(hào)，然后再對(duì)其進(jìn)行抗干擾處理后發(fā)送給溫度接收器；溫度信號(hào)接收器接收數(shù)字信號(hào)后對(duì)其進(jìn)行CRC校驗(yàn)，再對(duì)處理完成的數(shù)據(jù)用折半查找法和線性插值法查詢S型熱電偶分度表，來查找到一個(gè)合適的值進(jìn)行精確輸出。 論文最后對(duì)設(shè)備進(jìn)行了調(diào)試，包括各個(gè)通道放大倍數(shù)的確定和用實(shí)際的熱電偶分度表來代替理論的熱電偶分度表。 本設(shè)備具有很強(qiáng)的擴(kuò)展性，采用不同功能的傳感器及相應(yīng)的信號(hào)調(diào)理電路模塊即可實(shí)現(xiàn)各種功能的無線數(shù)據(jù)采集裝置，可以廣泛的應(yīng)用于小型無線數(shù)據(jù)采集終端、防火報(bào)警監(jiān)控等領(lǐng)域，使系統(tǒng)具有更廣闊的應(yīng)用前景。
[Abstract]:The structure of rotary kiln is complex and it is difficult to measure the internal temperature of rotary kiln.As the application of data acquisition system is becoming wider and wider, more and more types of measurement signals and signal sources are involved, and the requirements for measurement are becoming higher and higher. There are many data measurement and acquisition systems in China.However, many systems have some problems, such as single function, few acquisition channels, low acquisition rate, complex operation, and high requirement of test environment.After analyzing the current temperature measurement methods of rotary kiln, an 8-channel wireless multi-point temperature data acquisition device based on AVR single chip computer and wireless emitter module is designed in this paper.The equipment is convenient and flexible in collecting temperature, high precision in measuring temperature, strong ability of anti-interference, and can collect 8 temperature signals.The equipment is mainly used to measure the temperature of each production belt in rotary kiln, and cooperate with the upper computer to complete the monitoring of multi-point temperature in kiln.In this paper, the general design idea and realization method of temperature signal acquisition transmitter and temperature signal receiver are described respectively, and the principle of each part circuit is analyzed, and the design process of each module of the system is introduced in detail.The temperature signal acquisition transmitter uses a thermocouple to measure the temperature in the kiln, then amplifies the voltage signal and sends it to the microprocessor after processing and converting into a digital signal, and then sends it to the temperature receiver after anti-interference processing.After receiving the digital signal, the temperature signal receiver verifies the digital signal by CRC, and then searches the S thermocouple index table with the half-fold lookup method and the linear interpolation method to find a suitable value for accurate output.At the end of the paper, the equipment is debugged, including the determination of the magnification of each channel and the replacement of the theoretical thermocouple indexing table with the actual thermocouple indexing table.The device has very strong expansibility, using different sensors and corresponding signal conditioning circuit modules can realize various functions of wireless data acquisition device, can be widely used in small wireless data acquisition terminal,Fire-proof alarm monitoring and other fields, make the system has a broader application prospects.
【學(xué)位授予單位】：湖南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TQ054.7;TP274.2

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