智能體溫測(cè)量?jī)x設(shè)計(jì)與總結(jié)報(bào)告

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一．摘要
本次設(shè)計(jì)的智能體溫儀主要硬件部分由溫度傳感器、信號(hào)放大電路、A/D轉(zhuǎn)換電路、CPU控制電路、存儲(chǔ)器電路、液晶顯示模塊構(gòu)成。溫度傳感器（PT100）每隔1秒鐘便將測(cè)得的溫度變化轉(zhuǎn)化成電壓信號(hào)后,經(jīng)弱信號(hào)檢測(cè)放大器進(jìn)行放大，由A/D轉(zhuǎn)換器轉(zhuǎn)換成數(shù)字信號(hào).，然后由單片機(jī)讀取數(shù)字信號(hào)再進(jìn)行溫度數(shù)值轉(zhuǎn)換,并轉(zhuǎn)換為字符信號(hào)(ASCΙΙ碼)送到LCD進(jìn)行溫度顯示。當(dāng)所測(cè)溫度超出人體正常體溫時(shí)便會(huì)發(fā)出報(bào)警信號(hào)，報(bào)警溫度在程序內(nèi)設(shè)置,并且可以通過(guò)單片機(jī)編程進(jìn)行時(shí)間顯示（該儀器附帶時(shí)鐘功能）。此外，電源的供電為常用的5V，±12V。
關(guān)鍵字：鉑電阻，四線式接法，單片機(jī)，LCD顯示器。
Abstract:
The hardware of this intellectualized thermometer of this design are as follows: the temperature transducer, signal magnifying circuit, A/D transition circuit, CPU controlling circuit, memorizer circuit and LCD module. The temperature transducer (PT100) measures the changes of temperature every second and transforms it into a voltage, after being it has been magnified by the signal magnifier, it will be transformed into digital signals by the A/D transition circuit. The SCM will read the digital signals and transform them back into a temperature in the form of character signal (ASCΙΙ code), and then shown it on the LCD screen. When the measured temperature is above the ordinary one of a human body, it will send out the alarming message. The alarming temperature is set within the program, and the time of it can be shown by the SCM through a certain program (this device contains a time function). And plus, the power supply should be the normal 5V, ±12V.

Keywords: PT-Transducer Four-wire-connection
SCM(Single Chip Micyoco) Liquid Crystal Display

部分參考文獻(xiàn)

• 數(shù)字電子技術(shù)基礎(chǔ)（第四版）　　　　閻　石主編　　高等教育出版社
• 電子技術(shù)基礎(chǔ)模擬部分（第四版）　　康華光主編　　高等教育出版社
• 電子電路設(shè)計(jì)與實(shí)驗(yàn)　　　　　　　　吳　均編著
• 新型集成電路及其應(yīng)用實(shí)例 何希才編著 科學(xué)出版社