紅外搖控收發(fā)系統(tǒng)
頁數(shù) 36 字?jǐn)?shù) 19905
摘 要
本系統(tǒng)的設(shè)計(jì)目的是用紅外線作為傳輸媒質(zhì)來傳輸用戶的操作信息并由接收電路解調(diào)出原始信號(hào)，主要用到編碼芯片和解碼芯片對(duì)信號(hào)進(jìn)行調(diào)制與解調(diào)，其中編碼芯片用的是臺(tái)灣生產(chǎn)的PT2262，解碼芯片是PT2272。主要工作原理是：利用編碼鍵盤可以為PT2262提供輸入信息，PT2262對(duì)輸入的信息進(jìn)行編碼并加載到38KHZ的載波上并調(diào)制紅外發(fā)射二極管并輻射到空間，然后再由接收系統(tǒng)接收到發(fā)射的信號(hào)并解調(diào)出原始信息，由PT2272對(duì)原信號(hào)進(jìn)行解碼以驅(qū)動(dòng)相應(yīng)的電路完成用戶的操作要求。

關(guān)鍵詞：紅外技術(shù),遙控技術(shù),編碼,解碼
Abstract
The purpose that design this system is transmit customer’s operation information with infrared rays for transmit media, then demodulate original signal with receive circuit. It use coding chip to modulate signal and use decoding chip to demodulate signal. The coding chip is PT2262 and decoding chip is PT2272. Both chips are made in Taiwan. Main work principle is that we provide to input the information for the PT2262 with coding keyboard. The input information was coded by PT2262 and loading to high frequent load wave whose frequent is 38 kHz, then modulate infrared transmit dioxide and radiate space outside when it attain enough power. The receive circuit receive the signal and demodulate original information. The original signal was decoded by PT2272, so as to drive some circuit to accomplish customer’s operation demand.

Key word: infrared remotes technique; Control from a distance the technique; Code; Decoding

目 錄
第1章 概 述 1
第2章 遙控技術(shù) 3
2.1微波傳輸 3
2.2用無線電波傳輸 7
2.3用光束傳輸 9
第3章 紅外搖控收發(fā)系統(tǒng) 11
3.1 遙控系統(tǒng)的一般原理 11
3.2 工作原理 13
3.3 遙控發(fā)射器及其編碼 14
第4章 紅外線及其應(yīng)用范圍 21
4.1 紅外線的發(fā)現(xiàn)和在軍事上的應(yīng)用 21
4.2 紅外攝影 26
4.3 紅外線中的遠(yuǎn)紅外的應(yīng)用 31
致謝 33
參考文獻(xiàn) 34

參考文獻(xiàn)
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[2] 童詩(shī)白主編：《模擬電子技術(shù)基礎(chǔ)》第二版，高等教育出版社，1988年。
[3] lixiaowen.strahler.a.fridel,M.A conceptual model for effective directional emissive from non-isothermal surface. IEEE Tran s.on GARS,1999,37(5):2508.
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[5] 胡斌主編：《家用電器集成電路大全》機(jī)械工業(yè)出版社，1978年。