成都信息工程学院通信工程学院英文翻译————————————————————————————————作者：————————————————————————————————日期：2成都信息工程学院通信工程学院本科毕业论文设计英文→中文翻译论文题目红外光通信系统设计姓名邓谋专业通信工程班级2010级一班学号2010101039指导教师赵建日期2014年02 月27 日英文原件内容：IntroductionInfrared remote control system is mainly composed by the remote control transmitter, integrated receiver head, microcontroller, interface circuit shown in Figure 1. The remote control is used to generate the remote encoder pulse drive infrared emission control output of the infrared remote control signal, the remote control receiver on the remote control signal amplification, detection, shaping, demodulation remote encoder pulse. The remote control encoder pulse is a serial binary code for the infrared remote control system, the serial code input to the microcontroller, its internal CPU instruction decode on the remote control, and perform remote control functions. Using the remote control as the input of the control system, we need to address the following key questions: how to receive the infrared remote control signal; how to identify the infrared remote control signal, and decoding software design, design of control procedures.SCM historySCM was born in 1971, has gone through three major phases of the SCM, the MCU SoC.It consists of computing device, controller, memory, input output devices.Its full name is a single-chip microcomputer, is typical of embeddedmicro-controller (Microcontroller Unit), the commonly used letters of the abbreviation MCU single-chip, and it was first used in the field of industrial control.Master microcontroller technology to enable more people in the industry, students, enthusiasts, product developers, the question arose due to the extensive application of SCM in the field of industrial control, microcontroller development board, the more famous such as e-DZR-01A microcontroller developmentboard.Microcontroller chip dedicated processor developed from the CPU.The first design concept by a large number of peripherals and CPU integrated in a single chip, the computer system is smaller, more easily integrated into complex and require strict control equipment on the volume.Single-chip, also known as single-chip microcontroller, it is not the completion of a logical function of the chip, but a computer system integrated onto one chip.Equivalent to a mini-computer and computer, microcontroller only the lack of I / O devices.SCM rely on the program isrunning, and can be modified.Different functions through different programs, especially the special unique function, which is the other devices require much effort to do, while others make great efforts it is difficult to do.A not very complex functions using pure hardware to get the words of the 1950s developed 74 series, or 60 during the CD4000 series, the circuit must be a big PCB board!If successful on the market in the United States in the 1970s series of microcontrollers, the result will be different!Just because a program written by the MCU through you can achieve high intelligence, high efficiency and high reliability!Microcontroller for cost sensitive, so accounting for the dominance of the software or the lowest level assembly language, which is the lowest level than binary machine code language, since such low-level why use it?A lot of high-level language has reached a level of visual programming, why not?The reason is simple, is the microcontroller does not have a home computer as the CPU, also not as hard as mass storage devices.A visual high-level language to write small programs inside even if there is only one button, will reach tens of K of size!Nothing in terms of home PC's hard drive, but for SCM in terms of is not acceptable.SCM in the utilization of hardware resources must be high, so the compilation of the original while still in heavy use.The same reason, if the computer giant's operating system and application software to get home PC run up to the home PC can not afford.It can be said that the twentieth century across the three "power" era of the electrical era, the electronic age and has now entered the computer age.However, such a computer, usually refers to a personal computer, or PC.It is by the host, keyboard, monitor, and so on.Another type of computer, not how most people are familiar with.This computer is smart to give a variety of mechanical microcontroller (also known as micro-controller).The name suggests, the smallest of this computer system using only one IC to make a simple calculation and control.Because of its small, usually hidden in a controlled mechanical "stomach".Throughout the device, it plays like the role of the human mind, it is wrong, the entire device was paralyzed.Now, this single chip field of use has a very wide, such as smart meters, real-time industrial control, communications equipment, navigation systems, home appliances and so on.A variety of products using the SCM, you can play the effect of product upgrades,often preceded by an adjective in front of the product name - "smart", such as smart washing machines.Some factories or other amateur electronics developers to engage in out of certain products, not the circuit is too complicated, too simple and can easily be imitation.The reason may be stuck in the product does not use a microcontroller or other programmable logic devices.Microcontroller applicationsMCU to infiltrate all areas of life, almost difficult to find which areas of the microcontroller trail.Navigation device of the missile, aircraft, various instrument control, computer network communications and data transmission, industrial automation and process real-time control and data processing, widely used smart card IC, civil luxury car security system, VCR,cameras, the control of automatic washing machines, and program-controlled toys, electronic pets, etc., which are inseparable from the microcontroller.Not to mention the field of automatic control, robotics, intelligent instruments, medical equipment.Therefore, the learning, development and application of the SCM will create a number of computer applications and intelligent control of the scientists, engineers.The microcontroller is widely used in the field of instrumentation, home appliances, medical equipment, aerospace, equipment for the intelligent management and process control, generally can be divided into the following categories:1. On smart instrumentationThe microcontroller has a small size, low power consumption, and control functions, and expansion of the advantages of flexibility, miniaturization and easy to use, widely used in instrumentation, combined with different types of sensors can be realized such as voltage, power, frequency, humidity, temperature,flow, speed, thickness, angle, length, hardness, elements, pressure and other physical measurement.SCM makes the digital instrumentation, intelligent, miniaturization and more powerful function than the use of electronic or digital circuits.Such as precision measuring equipment (power meter, oscilloscope, analyzer).2.In industrial control applicationsMCU can constitute various forms of control systems, data acquisition systems.Such as factory assembly line of intelligent pipe3.in Household AppliancesIt can be said of home appliances is basically using the MCU control, electric rice praise, washing machines, refrigerators, air conditioners, color TVs, and other audio video equipment, then the electronic weighing equipment, varied, omnipresent.4.in the field of computer networks and communicationModern microcontroller with universal communication interface can be easily and computer data communications, provides excellent material for use in computer networks and communication devices, communication equipment basically to the MCU intelligent control from themobile phones, telephones, smallprogram-controlled switchboards, building automated communications call systems, train radio communications, and then to the ubiquitous mobile phones in their daily work, trunking mobile communication radios.5.Chip in the field of medical equipmentThe microcontroller uses in medical devices is also quite extensive, such as medical ventilator, a variety of analyzers, monitors, ultrasound diagnostic equipment and hospital beds call system and so on.6.Modular applications in a variety of large appliancesSome dedicated microcontroller designed for specific functions, modular applications in a variety of circuit, without requiring the use of personnel to understand its internal structure.Integrated single-chip, such as music, seemingly simple function, miniature pure electronic chip (as opposed to the principle of the tape drive), you need a complex similar to the principle of the computer.Such as: the music signal in digital form in memory (similar to the ROM), read by the microcontroller into analog music signal (similar to the sound card).In large circuits, this modular application greatly reduce the size, simplifying the circuit, reducing the damage, error rate, is also convenient to replace.7.Chip in the field of automotive equipmentThe microcontroller is widely used in automotive electronics, such as automotive engine controllers, intelligent electronic controller based on CAN bus automotive engine, GPS navigation system, abs anti-lock systems, braking systems, etc..In addition, the microcontroller business, finance, scientific research, education, defense, aerospace and other fields has a very wide range of applications, microcontroller development prospects are very objective.Speaking in general terms: the MCU's small size, light weight, inexpensive, and provide favorable conditions for learning, application and development.At the same time, learning to use the microcontroller is the best choice for the understanding of computer theory and structure.SCM is the best choice for people to study and application of related technologies.Master chip AT89S51The AT89S51 ATMEL Corporation in the United States low-power,high-performance CMOS8 bit microcontroller, on-chip containing 4k bytes of system programming of flash read-only program memory, the device using ATMEL high density nonvolatile memory technology to produce compatiblestandard 8051 instruction set and pin.It combines the Flash program memory can Programming (ISP) can also be used the traditional method of programming and general-purpose 8-bit microprocessor on a single chip.Features OverviewAT89S51 provides the following standard features: 4k bytes of Flash flashmemory, 128 bytes of internal RAM, 32 I / O port lines, Watchdog Timer (WDT), two data pointers, two 16-bit timer / counters, a fivetwo vector interrupt structure, a full duplex serial port, on-chip oscillator and clock circuitry., AT89S51 can be reduced to the 0Hz static logic operation, and supports two software selectable power saving modes.Free way to stop the CPU, but allows the RAM, timer / counters, serial communication port and interrupt system to continue to work.The power down mode to save the contents of RAM, but the oscillator is stopped and prohibited all other parts of the work until the next hardware reset.对应的中文翻译：介绍红外遥控系统主要由遥控发射器、一体化接收头、单片机、接口电路组成，如图一所示。