外文文献资料Development and design of electronic remote control anti-theft lockAlthough the peoples living standards improve and enhance safety awareness, wide variety of password locking into peoples lives and work. Electronic combination lock largest market share, because its relatively low cost, safe, simple operation, but its safety is not high. In order to solve much current electronic lock insecurity, we introduce the remote control technology; infrared remote control technology appeared earlier, low cost, fast response, the price advantage. Because infrared can not pass through the wall brick masonry cement, which often use in daily inconvenience. This paper presents the design living in remote control lock system. AT89S52 micro-controller as the core system, using wireless remote control technology and combined with electronic locks, electronic locks to further enhance the safety, reliability and availability, lower hardware costs.1. Introduction1.1 The development at home and abroadLock on the market today is the following categories:(1) Mechanical lock. It has a low cost, the advantages of anti-interference ability, but also has a password less, operating frequency, enter the password is not easy, poor security, the key disadvantage of easily copied and there is no automatic alarm function, can not refuse illegal user tries the password.(2)A fixed electronic keyboard password lock. Using a fixed keyboard lock password. Users can set the number of passwords, it has a lower cost, passwords large and difficult to decipher the pros and automatic alarm, self-locking function of the wrong code, but these electronic lock systems use a fixed keyboard, that is, will be fixed in the safe operation of the keyboard or the door panel, which makes the user in operation without a hidden and can easily be seen and photographed and makes the password secure, so safe operation is not high.(3) Infrared remote control electronic locks. Have the infrared remote control technology has been used in our daily life, the emergence of an infrared remote control technology and encryption technology combines electronic locks. Infrared and laser do not have the diffraction capability, users can not operate in hidden places, so also make the user feel inconvenient to use.(4) Other locks. Also on the market like a cell phone remote control lock, magnetic card-safe, smart card IC card of safe lock, fingerprint safe locks. Safe lock and smart card-type IC card in the safe lock, although all have easy to replace, the advantages of easy operation, but because of its simple structure, magnetic card, magnetic stripe (magnetic) exposed, and storage capacity is small, no internal security measures, easy to decipher, poor security. At the same time as magnetic cards and IC card itself on the use of the environment with high requirements, its stability and reliability was correspondingly reduced. Although fingerprint safe lock style is simple, password, unique, safe, easy to decipher, the advantages of easy to carry, but its high cost, and if the fingerprint population are scratched, can not effectively identify legitimate users, will bring great inconvenience to use, it can not be widely accepted. After investigation, the higher the security requirements of the occasion, electronic locks better market prospects. Its relatively low cost, a great amount of passwords, safe, simple operation, and the needs of most users. However, there are many current electronic lock insecurity, which is the electronic code lock has not been widely used as a reason for.1.2 Design BackgroundAs society and peoples growing material wealth increasing security awareness, people demand more and more of the lock, it is necessary to safe and reliable, but also easy to use. Traditional mechanical lock for the lack of fixed electronic code lock keyboard and infrared remote control is not hidden electronic code lock restrictive direction, in order to solve the locks of many security problems there, to further enhance the security of electronic locks of the system, reliability and practicality, so I lock the remote control anti-theft design issues for the design, coding, and wireless remote control technology, design of wireless remote control anti-theft lock system. Completely solve the mechanical lock and the fixed keyboard lock deficiencies, allowing users to a certain location can be within the safe operation of any electronic code lock. This wireless remote control anti-theft lock can fill gaps in the current market has good prospects.1.3 Design of the main contentThis design introduces a wireless remote control anti-theft lock; the design consists of system hardware design and system software design into two blocks. In the design of the first part of the development status of the lock was understood that the needs and design a systematic analysis, comparison of the number of programs to determine the overall program design, and modu