【正文】 摘 要 在傳統(tǒng)的溫室控制系統(tǒng)中 ,溫室環(huán)境檢測器與相應(yīng)執(zhí)行機構(gòu)之間通過有線電纜進行通信。有線傳輸系統(tǒng)的可靠性和抗干擾性能差，限制了農(nóng)業(yè)機器人等移動作業(yè)設(shè)施的使用以及溫室設(shè)施的更新。 作物在生命周期中的一切生物化學(xué)作用，都必須在一定的溫度條件下進行 ，也就是說， 溫度是影響作物生長發(fā)育最重要的因素。 nRF905是單片射頻收發(fā)芯片 ， 將 射頻 技術(shù)應(yīng)用于溫室環(huán)境參數(shù) 測控 系統(tǒng)中， 以無線方式取代溫室環(huán)境參數(shù)檢測器和相應(yīng)執(zhí)行機構(gòu)之間的有線電纜連接，避免了溫室內(nèi)大量電纜的鋪設(shè)，以達到便捷地對溫室 溫度 自動監(jiān)測，靈活地對溫室執(zhí)行機 構(gòu)的自動控制，為作物 生長提供適宜的溫度 。 本論文 研究 了 基于 nRF905 的溫室溫度測控系統(tǒng)的硬件和軟件設(shè)計。 系統(tǒng)通用性強 ,可用于果蔬儲藏保鮮、畜舍、冷庫、糧庫、生產(chǎn)車間等環(huán)境 控制領(lǐng)域。 關(guān)鍵詞 ： 數(shù)據(jù)采集； 射頻模塊 nRF905 ABSTRACT In the tradition of the greenhouse control system, The greenhouse environment detector and the corresponding actuator municate through cable. The reliability of cable transmission system and poor antiinterference performance. Agricultural robotics and Mobile operation facilities and Mobile operation facilities has been limited. Crops in the life cycle of all biochemical effect,must be in a certain temperature conditions. that is to say,influence of temperature on crop growth and development of the most important factors. nRF905 is a single chip RF transceiver, the application of RF technology in environmental parameters monitoring and control system of greenhouse. Connected wirelessly to replace the cable between the greenhouse environment parameters detector and the corresponding execution mechanism. To avoid the large number of cable laying in the greenhouse. Convenient to the greenhouse temperature automatic monitoring. Flexible automatic control of greenhouse actuator. Provide the suitable temperature. This paper studies the design of hardware and software of the greenhouse temperature control system based on nRF905 The system versatility, can be used for fruit and vegetable storage, cold storage, livestock, grain depot, workshop and other environmental control field. Keyword : data acquisition 。 radio frequency module nRF905 目錄 第一章 緒論 .......................................................................................................................... 5 選題的目的與意義 ......................................................................................................... 5 國內(nèi)外溫室溫度研究現(xiàn)狀 ............................................................................................. 5 短距離無線通信技術(shù)比較 ............................................................................................. 6 WLAN ............................................................................................ 6 藍牙 (Bluetooth)技術(shù) ............................................................................................ 6 紅外 (IrDA)技術(shù) ................................................................................................. 7 HomeRF 家用無線局域網(wǎng)技術(shù) .......................................................................... 7 低功率短距離無線通信技術(shù) ............................................................................. 7 主要研究內(nèi)容 ................................................................................................................ 8 第二章 基于 nRF905 的溫室溫度測控系統(tǒng)的硬件實現(xiàn) ......................................................... 9 系統(tǒng)簡介 ........................................................................................................................ 9 系統(tǒng)主要構(gòu)成器件介紹 ................................................................................................ 9 溫度傳感器 DS18B20 ........................................................................................ 9 微控制器 STC89C52 ...................................................................................... 11 無線射頻模塊 ................................................................................................. 12 硬件電路設(shè)計 .............................................................................................................. 13 電源電路設(shè)計 ................................................................................................... 13 溫度采集電路 ................................................................................................. 13 射頻模塊 nRF905 外圍電路 ............................................................................. 14 本章小結(jié) ...................................................................................................................... 14 第三章 基于 nRF905 的溫室溫度測控系統(tǒng)的軟件實現(xiàn) ...................................................... 15 溫度采集模塊程序設(shè)計 .............................................................................................. 15 無線傳輸模塊的程序設(shè)計 ........................................................................................... 17 nRF905 發(fā)送流程程序設(shè)計 .............................................................................. 17 nRF905 接收流程程序設(shè)計 .............................................................................. 19 本章小結(jié) .................................................................................................................... 21 第四章 系統(tǒng)測試、結(jié)論及展望 ............................................................................................... 21 系統(tǒng)測試 ...................................................................................................................... 21 測試中注意問題以及測試方法 .................................................................................. 22 結(jié)論及展 望 .................................................................................................................. 22 參考文獻 ..................................................................................................................................... 23 附錄 1：溫度信號采集程序清單 .............................................................................................. 25 附錄 2： nRF905 接收和發(fā)送程序清單 ..................................................................................... 29 附錄 3：主程序 .......................................................................................................................... 36 致 謝 .......................................