【正文】 技術(shù)等方面大量知識。溫度傳感器的發(fā)展趨勢：進(jìn)入 21世紀(jì)后，溫度傳感器正朝著高精度、多功能、總線標(biāo)準(zhǔn)化、高可靠性及安全性、開發(fā)虛擬傳感器和網(wǎng)絡(luò)傳感器、研制單片機(jī)測溫系統(tǒng)等高科技的方向迅速發(fā)展。溫度對于 工業(yè)的重要性推動了溫度傳感器的發(fā)展。所以使用無線傳輸?shù)母呔葴y溫系統(tǒng)可以對生產(chǎn)環(huán)境的溫度進(jìn)行無線傳輸并且能夠進(jìn)行使操作員可以遠(yuǎn)距離實(shí)時了解被測現(xiàn)場的溫度變化情況保證生產(chǎn)的自動化、智能化能夠順利、安全進(jìn)行，從而提高企業(yè)的生產(chǎn)效率。無線數(shù)據(jù)傳輸與有線數(shù)據(jù)傳輸相比，有諸多優(yōu)點(diǎn) ：一是成本低，省去大量布線；二是建網(wǎng)快捷，只需在每個終端連接無線數(shù)據(jù)傳輸模塊和架設(shè)適當(dāng)高度天線；三是適應(yīng)性好，可應(yīng)用于某些特殊環(huán)境；四是擴(kuò)展性好，只需將設(shè)備與無線數(shù)據(jù)傳輸模塊相連接。在許多測控現(xiàn)場，傳統(tǒng)數(shù)據(jù)傳輸都是通過有線電纜實(shí)現(xiàn)的。溫度作為一項(xiàng)工業(yè)常用測量對象，在工業(yè)現(xiàn)場和過程控制中具有至關(guān)重要的作用。溫度控制失誤就可能引起生產(chǎn)安全、產(chǎn)品質(zhì)量、產(chǎn)品產(chǎn)量等一系列問題，因此對溫度的檢測的意義就越來越大。 關(guān)鍵詞 ： DS18B20 溫度傳感器； NRF905 無線芯片 Ⅱ The Design of Two Temperature Detection and Wireless Transmission System Based on NRF905 Abstract:Temperature as industry, agriculture, national defense and scientific research departments such as the most mon measuring project. In modern industrial and agricultural production, scientific research in the process of the high and new technology development , it is also a very mon and very important design starting from the practical application of NRF905 wireless transmission module, the ambient temperature data collection, transmission and processing are studied, this paper proposes a temperature detection based on STC89C52 and the overall design scheme of wireless transmission system. This paper introduces the features and working principle of each module, and gives the principle diagram of the hardware and software design scheme of system. System uses the STC89C52 singlechip microputer as the main chip to NRF905 as wireless data transceiver module, using the SPI mouth realize twoway munication, SPI support highspeed data transmission, so as to satisfy the requirement of the radio frequency bandwidth. Through two DS18B20 temperature acquisition of onsite, and their respective data processing temperature data into the single chip microputer from machine, by the NRF905 wireless transmission module is sent to the host, the host end use as a monitor, LCD display LCD1602 for display. When the temperature more than set time limit, to plete the alarm buzzer and dc motor and the simulation of the cooling process. Key words： DS18B20 Temperature Sensor。 通過 兩個 DS18B20 進(jìn)行現(xiàn)場的溫度采集，然后 各自 將溫度數(shù)據(jù)送入從機(jī) 單片機(jī)進(jìn)行數(shù)據(jù)處理， 由 NRF905 無線傳輸模塊發(fā)送至主機(jī)，在主機(jī)端 利用液晶顯示器 LCD1602 作為顯示器進(jìn)行顯示。本文分別介紹了各個模塊的特性和工作原理，并給出了系統(tǒng)的硬件原理圖和軟件設(shè)計方案。 本 科 畢 業(yè) 論 文 基于 NRF905 的兩路溫度檢測 與無線傳輸系統(tǒng)設(shè)計 The Design of Two Temperature Detection and Wireless Transmission System Based on NRF905 目 錄 摘 要 ................................................................................................................................Ⅰ Abstract ............................................................................................................................Ⅱ 引 言 ..................................................................................................................................1 第一章 系統(tǒng)設(shè)計理論基礎(chǔ) ........................................................................................3 硬件基礎(chǔ) ............................................................................................................... 3 STC89C52 單片機(jī) .............................................................................................. 3 DS18B20 溫度傳感器 ......................................................................................... 4 NRF905 無線芯片 ............................................................................................... 6 LCD1602 液晶顯示器 ........................................................................................ 7 軟件基礎(chǔ) ............................................................................................................... 8 Keil C51 仿真軟件 .............................................................................................. 8 STCISP 編譯下載 .............................................................................................. 9 第二章 系統(tǒng)硬件 設(shè)計 .................... ..............................................................................13 系統(tǒng)總體 設(shè)計 ..................................................................................................... 13 系統(tǒng)各部分電路 設(shè)計 ......................................................................................... 14 主控電路 設(shè)計 .................................................................................................. 14 電源電路設(shè)計 .................................................................................................. 14 ISP 接口電路設(shè)計 ............................................................................................. 15 LCD 驅(qū)動 電路 設(shè)計 .......................................................................................... 15 DS18B20 電路 設(shè)計 ........................................................................................... 15 NRF905 接口電路設(shè)計 ..................................................................................... 16 第三章 系統(tǒng)軟件設(shè)計 ................................................................................................17 系統(tǒng)主模塊軟件設(shè)計流程 ................................................................................. 17 各主要模塊軟件設(shè)計流程 ..................................................................................18 第四章 系統(tǒng)測試結(jié)果 ............................................................................................... 25 結(jié) 論 ................................................................................................................................ 28 致 謝 ................................................................................................................................ 29 參考文獻(xiàn) ......................................................................................................................... 30 附 錄 ................................................................................................................................ 31 Ⅰ 基于 NRF905 的兩路溫度檢測與無線傳輸系統(tǒng)設(shè)計 摘要 ： 溫度作為工業(yè)、農(nóng)業(yè)、國防和科研