無線環(huán)境監(jiān)測模擬裝置設計方案完版畢業(yè)論文(已修改)
2025-05-27 02:52 本頁面
【正文】 目錄摘 要 1Abstract 11方案設計 1 2 2 2 2 3 3 顯示器件的選擇 3 42各模塊的硬件設計與核心電路 5 5 5 無線接收電路 5 73 DS18B20無線收發(fā)模塊程序流程圖 8參考文獻： 10附錄1 完整電路圖 11附錄2實物圖照片 12附錄3 軟件程序源代碼 122009年全國大學生電子設計競賽試題無線環(huán)境監(jiān)測裝置 摘要： 本系統(tǒng)是由單片機AT89C52作為主控芯片，選用DS18B20作為環(huán)境的溫度采集芯片，以及用光電傳感器對周圍環(huán)境的光照進行探測。把DS18B20采集回的當前環(huán)境下的溫度數(shù)據(jù)和光電傳感器采集回來的光照情況的數(shù)據(jù)傳送給探測點的AT89C52,進行相關(guān)的數(shù)據(jù)處理。然后把信息通過無線發(fā)射模塊傳送給控制終端的無線接收模塊。在控制終端把接收回來的數(shù)據(jù)經(jīng)過主控芯片AT89C52進行處理。然后傳送給LCD12864，對探測點的溫度和光照情況進行實時顯示。經(jīng)過測試，自制的無線收發(fā)模塊，其無線傳輸載波頻率為27MHZ完全符合要求，探測時延在2s以內(nèi)，天線與探測點的距離在50厘米以上，有比較好的數(shù)據(jù)傳輸功能。溫度數(shù)據(jù)經(jīng)過編碼后通過無線傳輸?shù)木瓤刂圃?攝氏度以內(nèi)。整個系統(tǒng)基本上達到了設計要求。關(guān)鍵字：單片機AT89C51,無線發(fā)射，無線接收，DS18B20，LCD12864。Abstact:This system uses the AT89C52 microcontroller as the master chip, chosing DS18B20 as the environmental temperature collecting chips and using the photoelectric sensors to detect the ambient light. The temperature data from DS18B20 and the data from the optical sensors, about the current environment, are transmitted to the the associated data is processed. And the processed data is transmited to the control terminal of the wireless receiver module through the wireless transmitter the control terminal, the received data is processed by the master chip AT89C52 and then send it to LCD12864. Lastly the detection point temperature and light conditions in is realtime displayed. Test proves that the selfproduce wireless transceiver module is accurate, the wireless carrier frequency of 27MHZ fully ply with the requirement and the detect delay is 2 s or less. The distance between the antenna and the detection point is 50 cm or proves that transmission capability is fine. The precision of temperature data encoded through wireless transmission is 1 degrees. All prove that the system meets the design requirements fully. Keywords: SCM AT89C51, wireless transmitters,
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