51單片機紅外收發器設計

電子機電論文編號:JD1090  論文字數:11472,頁數:41

目  錄

 摘  要 I
 ABSTRACT II
 1 緒論 1
 1.1研究背景 1
 1.2研究目的 1
 1.3研究意義 1
 2 系統分析 3
 2.1設計要求 3
 2.1.1整個控制系統的設計要求 3
 2.1.2紅外載波、編碼電路設計要求 3
 2.1.3 紅外解碼電路設計要求 3
 2.1.4 設備擴展模塊設計要求 3
 2.2總體設計方案 4
 2.2.1 方案論證 4
 2.2.2 總體設計框圖 6
 2.3 方案的可行性論證 7
 2.3.1 實用性 7
 2.3.2 經濟可行性 7
 2.3.3 技術可行性 7
 2.4小結 7
 3 硬件設計 8
 3.1單片機及其硬件電路設計 8
 3.1.1 單片機的介紹 8
 3.1.2 時鐘電路及RC復位電路 9
 3.2 單片機紅外發射器的電路設計 11
 3.2.1  矩陣鍵盤電路 11
 3.2.2  紅外發射電路 12
 3.3 單片機紅外接收器的電路設計 15
 3.3.1  紅外接收電路 15
 3.3.2 電源電路的設計 17
 3.3.3 八路LED開關電路 18
 3.3.4電磁式繼電器 18
 3.3.5 LCD1602液晶顯示電路 19
 3.4小結 20
 4 程序設計 21
 4.1紅外發射模塊 21
 4.1.1 發射電路主程序流程圖 21
 4.1.2紅外發射子程序流程圖 22
 4.2紅外接收模塊 22
 4.2.1紅外接收電路主程序流程圖 22
 4.2.2紅外接收電路子程序流程圖 23
 4.3小結 24
 5 系統測試 25
 5.1系統功能測試 25
 5.2小結 26
 參考文獻 27
 附  錄1 28
 附  錄2 32
 附  錄3 33
 謝  辭 34

摘  要

 隨著科學技術的發展，單片機因其高可靠性和高性價比，在智能化家用電器、儀器儀表等諸多領域內得到了極為廣泛的應用。當前單片機對家用電器控制呈現出外型簡單化、功能多樣化、性能優越化的發展趨向。紅外遙控器具用使用方便、功耗低、抗干擾能力強的特點，因此它的應用前景是不可估量。
 本課題以延伸紅外無線遙控技術為目的，提出了一種紅外遙控器集中控制的方案，核心是設計出一個無線紅外多路遙控發射/接收系統。本設計以紅外線作為傳遞信息的載體，可對8個受控對象的工作狀態進行短距離無線控制，適用于工業、醫療、家用電器等設備的開啟或關閉遙控，也可以對一種設備的八種工作狀態同步進行控制，或對2種設備的4種工作狀態同時控制。
 該系統可實現的具體參數如下：
1. 遙控距離不小于5m，即紅外遙控發射機與紅外接收機之間的距離不小于5m； 2. 遙控路數為8路，即可對8個受控設備同時進行開關控制； 
3. 工作頻率為38KHz，即紅外發射和接收的載頻為38KHz；
4. 接收端可顯示受控狀態。
 
 關鍵詞： 單片機 紅外數據發送與接收 八路LED開關電路 鍵盤控制

51 MCU-based infrared encoder and decoder

ABSTRACT
 With the development of science and technology, SCM because of its high reliability and cost-effective, in the intelligent home appliances, instrumentation and many other areas has been very widely used. Control of the current SCM appliances shown on the simplistic appearance, diversification of function, the development trend of superior performance. Infrared remote control apparatus with easy to use, low power consumption, anti-jamming features, so its prospects are immeasurable.
 The topics to extend the infrared wireless remote control technology for the purpose, a centralized control infrared remote control program, the core is to design a wireless infrared remote control multiple transmit / receive system. The design of an infrared transmission of information as a carrier of controlled object can work 8 state short-range wireless control for industrial, medical, home appliances and other equipment on or off remotely, it can be a device eight kind of working state synchronization control, or two kinds of equipment working state of simultaneous control of 4.
The system can achieve the specific parameters are as follows:
1. Remote control distance is not less than 5m, the infrared remote control transmitter and the distance between the infrared receiver is not less than 5m;
2. Remote control for the 8 large ones, can be controlled on the eight switch control device at the same time;3. Working frequency is 38KHz, the infrared transmission and reception of the carrier frequency of 38KHz;4. Receiver to display control.

 Key words:  MCU  Send and receive IR data  Octal LED switching circuit  
 Keyboard control