Intelligent Residential Safe Alarm System

With the rapid development of modernization and great improvement of people's living, the need of house has been changed from only the living space to multiform needs of high-quality, multi-function, safety, intelligence and so on. On the other hand, the rapid development of electronics and communication technology have provided the chance to excogitate the intelligent houses.A kind of easy to use, reliable intelligent safe-proof alarm system for residential area is introduced. It has the functions of theft-proof and fire-proof, noxious gas-proof, water flood, performing automatic detection and automatic dial. The Wireless Infrared sensor and Door-magnetism sensor combined are used for theft-proof so as to realize automatic detection. Temperature sensor, Photoelectric smoke -thickness sensor and CO thickness sensor are integrated to a compound detector for fireproof. Multi-sensors make the least false alarm and enhance the reliability of system. The wireless sensors have data acquire, A/D transform, compare functions that output alarm signal. When the sensors detect any off normal signal, an interrupt request is sent to the MCU. Immediately the MCU control the interface module of telephone to accomplish off hook. According the kind of danger, the dialing module will automatically dial the right phone number such as the phone number of residential area center or the host number. Automatic dial means that it can send help voice in public telephone network to the interrelated bureau.The system adopt wireless mode for transmission alarm signals from the sensors to MCU so as to free the user from the tiring work of distribute wire. When use this system ,the users have to lay the sensors in the detecting area and lay MCU in indefectible area, then set the sensor's address and data bits, after that, the users have to turn on the system by its pin number. This system is particularly easy to expand and reliable. The system is very cheap because the alarm data is transmitted on telephone networks. The system is designed by considering the anti-interference in the side of the hardware arid software. It can work with high reliability.