文档介绍：Based on infrared alarm technology security systems
1 the introduction
the research significance of this topic research situation at home
and abroad .
With the development of society and science and technology unceasing
development, people's living standards been improved greatly, and to the
private property protection means in the unceasing enhancement, the
intelligent facilities for anti-theft puts forward new requirements. This
design is to meet the need of modern residential anti-theft designed family
electronic alarm system. It in previous devices based on improved greatly,
because use the single-chip processor signal, not only can used for single
residential area, also can be used in a large-scale residential security
systems. It's the job of the performance is good, do not appear to report
and misstatement phenomenon, safe and reliable.
In our country, the present market condition alarm basically has triggered
alarm system pressure switch electron and alarm system and pressure shading
triggered alarm system, etc. Various kinds of alarm, but this several
common alarm there are some ings. This system USES a human
pyroelectric infrared sensor in the human body detector in the field,
passive pyroelectric infrared detectors because of its low cost, easy
fabrication, low cost, installation is more convenient, anti-theft
performance is stable and high s