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Study on Doppler-type Microwave Alarm System

Author: SongXiaoZhong
Tutor: DongTianLin
School: Huazhong University of Science and Technology
Course: Electromagnetic Field and Microwave Technology
Keywords: Microwave alarm system Doppler effect Auto Dial Voice Alarm
CLC: TP277
Type: Master's thesis
Year: 2007
Downloads: 164
Quote: 0
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Abstract


With the rapid development of information technology, as well as people 's living standards greatly improved, people 's demand for residential living space from the simple pursuit toward the pursuit of quality , functionality , service requirements , such as multiple transition . Anti-theft alarm system designed for the protection of life and property safety of residents has practical significance . This article describes the Doppler -type microwave burglar alarm system. Article microwave detectors designed according to the Doppler effect , is proposed based on the characteristics of the transistor radio frequency oscillator application design methods, design principles based on positive feedback preamplifier , using SCM and other peripheral chips can automatically dial alarm . When the microwave detector detects danger , when an interrupt request to the microcontroller , then controlled by the microcontroller telephone interface circuit for analog hook, automatically dial the user according to the danger pre-set telephone numbers. Articles divided according to the functions of the system microwave detectors , alarm host, automatic dialing circuit , voice circuit , man-machine interface circuits, telephone interface circuit , police intelligence acquisition circuit and power supply circuit, and each of the above functional circuit hardware design in detail elaborate , detailing core chip selection, peripheral circuit connected between the chip and the chip connection circuit , gives the main alarm system and automatic dialing alarm subroutine software design diagram . According to project requirements and design of microwave alarm system, basically meet the needs of users. This paper points out the development direction of security alarm systems .

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Monitoring, alarm,fault diagnosis system
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