【正文】 畢業(yè)設(shè)計(jì) 外文翻譯 多 紅外遙控及芯片介紹 學(xué) 院： 電氣與電子工程學(xué)院 專 業(yè)： 電子信息工程 學(xué)生姓名 ： 學(xué) 號(hào)： 指導(dǎo)教師 ： 2021 年 6 月Infrared Remote And Chips Are Introduced 1 Infrared Remote And Chips Are Introduced People39。s eyes can see the visible wavelength from long to short according to the arrangement, in order to red, orange, yellow, green, green, blue, violet. One of the red wavelengths for ~ muon m, Purple is wavelength range ~ muon m. Purple is shorter than the wavelength of light called ultraviolet ray, red wavelengths of light is longer than that of infrared light. Infrared remote control is to use wavelength for ~ muon m between the near infrared to transfer control signal. Commonly used infrared remote control system of general points transmit and receive two parts. The main ponent part for the launch of infrared light emitting diode. It is actually a special light emitting diode, due to its internal material differs from ordinary light emitting diode, resulting in its ends on certain voltage, it is a rather infrared light. Use of infrared light emitting diode the infrared wavelengths, for 940nm appearance and ordinary, just the same light emitting diode five different colors. Infrared light emitting diode generally have black and blue, transparent three colors. Judgement of infrared light emitting diode and judgment method, using a multimeter to ordinary diode electric block measure of infrared light emitting diode, reverse resistance. The infrared light emitting diode luminescence efficiency to use special instrument to measure precise, and use only spare conditions to pull away from roughly judgement. Receiving part of infrared receiving tube is a photosensitive diode. In actual application of ir receiving diode to reverse bias, it can work normally, ., the infrared receiving circuit application in diode is used to reverse, higher sensitivity. Infrared receiving diode usually have two round and rectangular. Due to the power of infrared light emitting diode (or less monly 100mW), so ir receiving diode received signals is weak, so will increase highgain amplifier circuit. In mon CX20216A, etc PC1373H muon infrared receiving special amplifier circuit. In recent years both amateur or formal products, mostly using infrared receiving head finished. The head of infrared receiving product packages generally has two kinds: one kind USES sheet shielding, A kind of plastic packaging. There are three pin, namely the power is (VDD), power negative (GND) and data output (VO or OUT). Infrared receiving head foot arrangement for types varied, manufacturer39。s instructions. Finished the advantages of infrared receiving head is not in need of sophisticated debugging and shell screen, use rise as a transistor, very convenient. But Infrared Remote And Chips Are Introduced 2 when used in the infrared receiving attention finished first carrier frequency. Infrared remote mon carrier frequency for 38kHz, this is transmitted by using 455kHz TaoZhen to decide. At the launch of crystals were integer frequency, frequency coefficients, so monly 12, so 455kHz 247。 12 hundredth kHz 38kHz hundredth 379,000. Some remote control system adopts 36kHz, 56kHz, etc, general 40kHz launched by the crystals of oscillation frequency to decide. Infrared remote characteristic is not influence the surrounding environment and does not interfere with other electric equipment. Due to its cannot perate walls, so the room can use mon household appliance of remote control without mutual interference, Circuit testing is simple, as long as given circuit connection, generally does not need any missioning can work, Decoding easily, can undertake multiple remote control. Because each manufacturer produces a great deal of infrared remote applicationspecific integrated circuit, when need press diagram suo ji. Therefore, the infrared remote now in household appliances, indoor close (less than 10 meters) in the remote control is widely used. Multiple infrared remote control system of infrared emission control buttons, there are many parts general representative of different control function. When pressed a button, correspondingly in the receiver with different output. Receiving the output state can be roughly divided into pulse, level, selflocking and interlock, data five forms. The pulse ou