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The design of fire alarm system based on single chip
microcomputer
Major: ElecElectronic information science and Technology ( teachers'
professional class 1) Author: Chen Yuanlong Supervisor: Deng Yu
Abstract: with the advent of "information times", as a means of accessing i
nformation -- sensor technology has been significant progress, its application field
is more and more extensive, the requirement is more and more high, more and
more urgent need. The sensor technology has become a national science and te
chnology development level of one of the important symbols. Therefore, understa
nding and mastering of sensor's structure, working principle and characteristic is
very important.
In this paper, a MQ-2 type semiconductor resistor type smoke sensor and S
TC89C52RC single chip as the core technology and electronic technology, design
s a technology better smoke alarm. The selection of MQ-2 type semiconductor g
as sensitive element smoke sensor smoke detection, which has high sensitivity, si
mple structure, quick response, strong anti-interference ability, stable performance,
intelligent, practical value is high, and the price is low, long service life.
Key word: Smog, alarm apparatus,STC89C52RC, sensor