中英文外文翻譯--基于單片機(jī)的汽車防盜報(bào)警系統(tǒng)設(shè)計(jì)

1、Based on monolithic integrated circuit automobile security alarm system designAbstract: Decodes the automobile security system using them on litchis integrated circuit interior resources realization jump code, it each ti

2、me uses the remote control password all is changing, both enhanced the system security, and greatly reduced the cost.Keyword: Monolithic integrated circuit, Automobile security system , Code/decodeIntroductionIs unceasin

3、gly progressive along with the social economy and the high tech rapid development, in the routine work and the life, the automobile has become the people ideal transportation vehicle. But the following motor vehicle the

4、case which robbed gradually is also in creased has created the pilot economical property loss. In order tore duce the automobile to rob the event the formation rate, for has the automobile the user to provide the safety

5、control, simply develops one kind to be reliable, the ease of operation, can send out in the discovery normal condition to the pilot reports to the police the reminder and the security warning safety system has the pract

6、ical significance. This article based on to the existing automobile security alarm system generalized analysis, develops one kind of brand-new security alarm system. This system has mainly used the jump code code/decodin

7、g principle, causes the overall system to be safer, greatly reduces password explaining rate.1. System principle of workThe automobile security alarm system the remote control which carries by the driver and installs in

8、the automobile the controller two parts composes. The remote control and the controller all use eight CMOS which American AT-MEL Corporation produces the AVR monolithic integrated circuit, this series monolithic integrat

9、ed circuit based on new simplifies instruction R the ISC structure, includes the service life most to be few is 1,000 time writes/scratches the circulation the Flash program memory, as well as the service life at least i

10、s 100,000time writes/scratches the circulation E the EPROM data-carrier storage, some 2 only have when the entire piece usesVD5026/27, PT2262/72, HT12E/D and so on the general code/decodes the electric circuit, its passw

11、ord decided by the component address, each set of security systems use a fixed invariable password. Along with the micro processing technology development, through the receiver emote control transmitting message, may int

12、ercept this fixed password, moreover general arranges the decoding address to lose the person to carry the component size limit, its quantity is impossible too much, can obtain not repeatedly codes very is also limited,

13、also can very quickly explain the password with the automatic scanner. Therefore, this kind of password fixed invariable automobile security system has received the serious threat. Decodes the automobile security system

14、using the monolithic integrated circuit interior resources realization jump code, it each time uses the remote control password all is changing, with the password no longer duplicates uses, causes the interception passwo

15、rd also is makes a futile effort, in addition, it may increase the enough many passwords figure, enhances the system resistance illegal scanning the ability. The remote control coding altogether has 12 bytes, separately

16、by 3 bytes codes channels code, 3 bytes codes forewords number, 5 bytes jumps codes, 1 byte pressed key operation code is composed. Encoded front adds on logic in each byte 0 to take the outset position, encoded behind a

17、dds on a logical 1 achievement in each byte to stop the position, and in most front adds on several logic 1 to take the guidance signal, this constituted the serial coded signal which uses in to transmit. The code channe

18、l code uses in to express the remote control status; each set of systems use a fixed channel code. The code foreword number uses in to record the encoded order, its starting value is 0, the monolithic integrated circuit

19、every time codes a time, the code foreword number upwardly counts time. The code channel code and the code foreword number deposits in monolithic integrated circuit EEPROM, guarantees them power cut the influence. The ju

20、mp code is the systematic true password, it passes through the complex special algorithm by the code channel code and the code foreword number to extract, this special algorithm foreign security. The pressed key operatio

21、n code by the pressed key which presses was decided, when “the hypothesis“ the key is pressed down, its code decides as 0 1H; When “relieves“ the key presses down, its code decides as 00H. Whether is the decoding confirm

22、s receive the code legitimate a series of operating process. Was confirmed the legitimate code needs to satisfy three conditions; (1) codes the channel code and the decoding channel code is same; (2) coded the foreword n