【正文】 郵電與信息工程學(xué)院 現(xiàn)代測(cè)控技術(shù) 課程設(shè)計(jì)說(shuō)明書 課題名稱： 無(wú)限溫度采集系統(tǒng) 學(xué)生學(xué)號(hào) ： 0941050212 專業(yè)班級(jí) ： 09 測(cè)控技術(shù)及儀器 2 班 學(xué)生姓名 ： 劉奎 學(xué)生成績(jī) ： 指導(dǎo)教師 ： 李 國(guó) 平 課題工作時(shí)間： 2021620 至 202174 I 摘要 無(wú)線溫度采集系統(tǒng)是一種基于射頻技術(shù)的無(wú)線溫度檢測(cè)裝置。本系統(tǒng)由傳感器和接收機(jī)，以及顯示芯片組成。傳感器部分由數(shù)字溫度傳感器芯片 18B20，單片機(jī) 89C52，低功耗射頻傳輸單元 NRF905 和天線等組成，傳感器采用電源供電；接收機(jī)無(wú)線接收來(lái)自傳感器的溫度數(shù)據(jù)，經(jīng)過(guò)處理、保存后在 LCD1602 上顯示，所存儲(chǔ)的溫度數(shù)據(jù)可以通過(guò)串行口連接射頻裝置與接收端 進(jìn)行交換。 數(shù)字單總線溫度傳感器是目前最新的測(cè)溫 器件，它集溫度測(cè)量， A/D轉(zhuǎn)換于一體，具有單總線結(jié)構(gòu)，數(shù)字量輸出，直接與微機(jī)接口等優(yōu)點(diǎn)。既可用它組成單路溫度測(cè)量裝置，也可用它組成多路溫度測(cè)量裝置，文章介紹的單路溫度測(cè)量裝置已研制成產(chǎn)品 ,產(chǎn)品經(jīng)測(cè)試在 10℃ 70℃間測(cè)得誤差為 ℃ ,80℃≤ T≤ 105℃時(shí)誤差為 ℃ ,T105℃誤差為增大到 1℃左右。 關(guān)鍵詞：溫度采集系統(tǒng)；無(wú)線收發(fā)；溫度傳感器； 89C52單片機(jī) ； II Abstract Wireless temperature acquisition system based on RF technology is a kind of wireless temperature detecting device. The system consists of the sensor and receiver, and display chip. The sensor consists of digital temperature sensor18B20 chip, chip 89C52, low power RF transmission unit NRF905 and antenna ponents, sensors using wireless power supply。 the receiver receives from the temperature data, processed, preserved in the LCD1602 display, the stored temperature data can be through the serial port connected to the RF device and the receiving terminal exchange. The digital single bus temperature sensor is the current measuring device, it sets the temperature measurement, A/D conversion in one, with a single bus structure, digital output, the advantages of direct interface with microputer. Not only can it consists of single channel temperature measuring device, it is also available to form a multichannel temperature measuring device, this paper introduces single temperature measurement device has been developed into products, products tested in 10℃ 70 ℃ measured between the error is ℃ ,80 ℃≤ T ≤105 ℃ error is ℃ , T105 ℃ error in order to increase to about 1 ℃ . Key words: temperature acquisition system。 wireless transmission。 temperature sensor。 SCM 89C52 目錄 摘要 .............................................................................................................................................. I Abstract ....................................................................................................................................... II 一．設(shè)計(jì)要求 .............................................................................................................................. 1 二．設(shè)計(jì)原理 .............................................................................................................................. 1 ． LabVIEW 介紹 ...................................................................................................................... 1 . 采集系統(tǒng)的組成結(jié)構(gòu) ............................................................................................................ 1 數(shù)字溫度傳感器 DS18B20 ................................................................................................ 1 . 射頻傳輸單元 NRF905 .................................................................................................. 2 .1602 液晶顯示 芯片 ........................................................................................................ 2 三、系統(tǒng)工作原理及詳細(xì)流程 .................................................................................................... 3 ． DS18B02 主要特性 ............................................................................................................... 3 . AT89S52 單片機(jī)介紹 .......................................................................................................... 6 NRF905 工作原理 .............................................................................................................. 9 ． nRF905 工作模式 ....................................................................................................... 9 ． nRF905 工作流程 ...........................................