外文翻译(红外线遥控系统)(编辑修改稿)

外文翻译(红外线遥控系统)(编辑修改稿)内容摘要：

en briefed the infrared data munications technology features and applications, and infrared transceiver product characteristics, domestic and international situation and development trend of the last under infrared remote transceiver system in practical application to establish a task of design orientation. Infrared Remote Control Transceiver System Infrared remote control system is divided into singlechannel and multichannel remote control. Only a mand signal transmission channel, called singlechannel remote control system。 with more than two instructions signal transmission channel known as a multichannel remote control system. Relatively simple singlechannel remote control, in general, only a launcher directive Key receivers and only one circuit implementation. While in the receiving circuit to add more stable memory circuits that can be activated mands to launch a number of key, so that the receiver circuit multistable memory circuit repeatedly to change the state, to realize many of the functional control, But such a state of change is the order. If we are to achieve an arbitrary control, resort to the use of multichannel remote control system. Multichannel remote control can be realized by the object of arbitrary multifunction remote control. As for the choice of several routes and what control methods, according to the actual situation (such as object, operational requirements and cost accounting, etc.) to decide. General infrared remote transceiver system by infrared remote control transmitter signal coding, infrared remote control signal receivers and decoders (or decoder chip MCU) and the external circuit consisting of three parts. Signal transmitter remote control code used to generate pulses of infrared emissiondriven output infrared remote control signal, receiver pletion of the remote control signal amplification and detection, plastic and demodulation encoding pulse. Infrared remote control coded pulse is going to obtain a continuous serial binary code, and for most of the infrared transceiver system, This serial code as microcontroller of the remote control input signals from the internal CPU pletion of the remote control instruction decoder, on the other infrared remote control transceivers, the designers of electronic products, The internal microcontroller of the remote control decoder directive is not accessible. Therefore, people are using infrared encoder / decoder chip and microcontroller developed various generic infrared remote transceiver system, In various equipment infrared signals between the transceiver. Remote transceiver system generally transmitters and receivers is posed of two parts. Launchers from the general direction keys, coded instructions circuit modulation circuit, driving circuit, firing circuit of several parts. When pressed a key, the directive coding circuit, in the corresponding instructions encoded signal, the encoder signal to the carrier modulation, Driven by the power amplifier circuit after circuit fired from the field after firing instructions coded modulation signals. General receiver by the receiving circuit, the amplifier circuit, demodulation circuits, instruction decoder circuit, driving circuit, circuit implementation of several parts. Receiving Circuit will launch vehicles have been coded modulation signal receiving instructions from, and to enlarge evacuation demodulation circuit. Demodulation circuit will have the coding modulation signal demodulation, namely, reduction of signal coding. The instruction decoder to the encoder signal decoding, Driven by the final circuit to drive the implementation of various instructions circuit to control the operation. infrared remote control transceiver product profiles infrared remote control transceiver product structure and type Currently infrared transceiver in accordance with the mode of transmission rate and can be divided into four categories : Serial mode, the highest rate of Kbps。 mediumspeed model : the highest rate of Mbps and。 Highspeed mode : The maximum rate of 16 Mbps. Also according to the size chip power consumption can be divided into lowpower consumption and standard two categories, lowpower type normally used 3 V power supply, transmission distance closer to about 0 30cm, which is monly used standard 5V power supply, transmission distance away at least 1m above. infrared remote control transmitters of the status quo at home and abroad Infrared munication technology in the development stage and there are several infrared munication standards, between different standards for infrared equipment can not infrared munication. To have all the infrared equipment to interoperability in 1993 by more than 20 large manufacturers initiated the establishment of an Infrared Data Association (IRDA) unified the infrared munication standards , which is currently widely used in infrared data munication protocols and standards, also known as the IRDA standard. Since 1993 IRDA since the establishment of the Infrared Data Association members have developed to more than 150. IRDA standards of the industry has been widely recognized and supported. Has been developed with the infrared munications equipment have been as many as 100 species. IR module, installed capacity has reached 150 million sets. Although there is also a short distance wireless Bluetooth technology, But in infrared munication technology low cost and broad patibility advantages, Infrared data munication in the future will still be a very long time inherent shortrange wireless data munications fields play an important role. Infrared Transceiver product development trend In various infrared transceiver products, although the transmission rate, transmission distance and other characteristics, But infrared transceiver products has been towards improving the transm。