【正文】 定的指令編碼信號。工業(yè)設(shè)備中，在高壓、輻射、有毒氣體、粉塵等環(huán)境下，采用紅外線遙控不僅完全可靠而且能有效地隔離電氣干擾，且價格便宜，市場上非常容易買到。紅外線遙控是利用近紅外光傳送遙控指令的，波長為 ~。 紅外線又稱紅外光波，在電磁波譜中，光波的波長范圍為 ~1000um。t meet the demand of the market. People hope electric fan in the small volume, convenient, etc, and on the basis of to have more features, and the wide application of infrared remote control and single chip microputer technology maturity, it makes the infrared remote control system bee the trend of the development of electric fans. This design scheme based on the demand of the market, bined with infrared remote control design is simple, convenient, low cost and other characteristics, the use of a special radio transmission HS0038 receiver chips, and based on this, designs a simple system of infrared remote control electric fan. System including receiving and launch of two parts, this paper designed the basic functions of the electric fan: switch function, category five speed adjustments. After many tests and circuit adjustment, the system can realize the functions are normal. Key words： Infrared remote control, Signal modulation, Encoding, Decoding 紅外遙控風(fēng)扇 1 目 錄 摘 要 ................................................................................................................................. I Abstract .................................................................................................................................II 第 1章 緒論 ........................................................................................................................... 1 選題背景及意義 ...................................................................................................... 1 紅外遙控的設(shè)計思路 ............................................................................................... 2 第 2章 硬件設(shè)計 ................................................................................................................... 4 ........................................................................................................... 4 ............................................................................................................... 5 AT89C51芯片 ............................................................................................... 5 TC9012紅外發(fā)射芯片 ................................................................................... 9 HS0038紅外接收頭 .................................................................................... 12 ............................................................................................................. 14 .............................................................................................. 14 .............................................................................................. 15 第 3章 軟件設(shè)計 ................................................................................................................. 17 ............................................................................................................. 17 ............................................................................................................. 19 結(jié) 論 .............................................................................................................................. 24 參 考 文 獻 ......................................................................................................................... 25 致 謝 .............................................................................................................................. 26 紅外遙控風(fēng)扇 1 第 1章 緒論 選題背景及意義 單片機自 20 世紀 70 年代問世以來，以其極高的性價比，受到人們的重視和關(guān)注，應(yīng)用很廣，發(fā)展很快。 本設(shè)計方案基于市場的需求，結(jié)合紅外遙控設(shè)計簡單、方便、成本低廉等特點，采用專用的遙控發(fā)射接收芯片 HS0038，在此基礎(chǔ)上設(shè)計了一個簡易的紅外遙控電風(fēng)扇系統(tǒng)。人們希望電風(fēng)扇在體積小、 使用 方便等的基礎(chǔ)上 ， 能夠擁有更多的功能，而紅外遙控的廣泛應(yīng)用及單片機技術(shù)的成熟，則使得紅外遙控系統(tǒng)成為了電風(fēng)扇的發(fā)展趨勢。 關(guān)鍵詞： 紅外遙控 ， 信號調(diào)制 ， 編碼 ， 解碼 紅外遙控風(fēng)扇 II Abstract As a traditional household appliance, along with the popularity of air conditioning, electric fan market position by the huge impact and the traditional switch, speed adjustment can39。 這些都離不開單片機 ， 更不用說自動控制領(lǐng)域的機器人、智能儀表、醫(yī)療器械了 ， 因此 ，單片機的學(xué)習(xí)、開發(fā)與應(yīng)用極其重要 。紅外光按波長范圍分為近紅外、中紅外、遠紅外、極紅外 4 類。由于紅外線遙控裝置具有體積小、功耗低、 功能強、成本低等特點，因而，繼彩電、錄像機之后，在錄音機、音響設(shè)備、空調(diào)機以及玩具等其它小型電器裝置上也紛紛采用紅外線遙控。 發(fā)射機 一般由指令鍵 (或操作桿 )、指令編碼系統(tǒng)、調(diào)制電路、驅(qū)動電路、發(fā)射 紅外遙控風(fēng)扇 2 電路等幾部分組成。指令譯碼器將編碼指令信號進行 譯碼，最后由驅(qū)動電路來驅(qū)動執(zhí)行電路實現(xiàn)各種指令的操作控制（機構(gòu)）。 紅