智能體溫測量儀設計與總結報告

全文38頁 約20000字 講述詳細 圖文并茂

一．摘要
本次設計的智能體溫儀主要硬件部分由溫度傳感器、信號放大電路、A/D轉換電路、CPU控制電路、存儲器電路、液晶顯示模塊構成。溫度傳感器（PT100）每隔1秒鐘便將測得的溫度變化轉化成電壓信號后,經(jīng)弱信號檢測放大器進行放大，由A/D轉換器轉換成數(shù)字信號.，然后由單片機讀取數(shù)字信號再進行溫度數(shù)值轉換,并轉換為字符信號(ASCΙΙ碼)送到LCD進行溫度顯示。當所測溫度超出人體正常體溫時便會發(fā)出報警信號，報警溫度在程序內(nèi)設置,并且可以通過單片機編程進行時間顯示（該儀器附帶時鐘功能）。此外，電源的供電為常用的5V，±12V。
關鍵字：鉑電阻，四線式接法，單片機，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

• 數(shù)字電子技術基礎（第四版）　　　　閻　石主編　　高等教育出版社
• 電子技術基礎模擬部分（第四版）　　康華光主編　　高等教育出版社
• 電子電路設計與實驗　　　　　　　　吳　均編著
• 新型集成電路及其應用實例 何希才編著 科學出版社