Based on monolithic integrated circuit automobile security alarm
system design
Abstract: Decodes the automobile security system using them on litchis integrated
circuit interior resources realization jump code, it each time 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/decode
Introduction
Is unceasingly 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 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 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 practical
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/decoding principle, causes the overall
system to be safer, greatly reduces password explaining rate.
1. System principle of work
The automobile security alarm system the remote control which carries by the
driver and installs in 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 integrated
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 is 100,000time writes/scratches the
circulation E the EPROM data-carrier storage, some 2 only have when the entire piece