Research on intelligent alarm system for residential area
Abstract
With the rapid development of communication technique and improvement of standard of people's living day by day,the need of living environment has been improved, not only more conveninent but also safe.
A kind of intelligent alarm for system for residential area is introduced. It includes the functions of thief-proof and fireproof, performing automatic detection and automatic dial. Pyroelectric infrared sensor and Microwave sensor combined are used for theft-proof so as to realize automatic detection. Temperature sensor、Photoelectric smoke sensor and CO sensor are integrated to a compound detector for fireproof. Automatic dial means that it can send help voice through Public telephone switch network to the bureau.
The system discerns the master by the secret code. Only imputed correct secret code,could system be closed. Each module is controlled by a microcomputer and they communicate with each other by profibus-DP in order to achieve credible transmission. The computer in surveillant center will display the information as soon as it inquires the alarm signal. Definite functions such as alarm information query, user-info management and operator's info management can be realized. The system is designed by considering the anti-interference in the side of the hardware and software. It can work with high reliability.
Key words: microcomputer;thief-proof and fire-proof;automatic dial; phonetic alarm;data traffic