Research On Family Intelligent Theft-proof And Fireproof Alarm System

With the rapid development of social-economic and the day-by-day increment of people's living standards, people give more requirements on their residence, such as they hope their houses not only cozy,comfortable but also more safe and intelligent. On the other hand, the rapid development of modern electronic information and communication technology provides strong technical support for the research of intelligent safe residence.This paper designs an intelligent wireless alarm system which is easy and reliable to operate. It has theft-proof and fireproof functions and also can realize automatic signal detection and telephone alarm. Automatic detection is to realize automatic inspection of various analog signals (infrared signals issued by the human body, temperature, smoke concentration) within the house by various combined type detector or sensor. The application of combined type detector enhances the reliability of the system. Automatic telephone alarm means the system dials the household or related department automatically by telephone line and sends help voice. When the intelligent detector detects any off normal signals it just outputs the switch quantity of the alarm signal, sent to the MCU by wireless transfer mode, and the MCU will control the interface module of telephone automatically and accomplish off hook. According the kind of danger, the dialing module will voluntarily dial the right number such as the phone number of the residential area center or the host. Besides, this system also sets a password to verify, through the keyboard the user can input the code or modify the password. In order to build up the system security and stability, the system is equipped with standby power and has the function of self-diagnosis of outage and power-break.Wireless monitoring system is that the data transmission between front-end detector and the host microprocessor uses wireless mode which overcomes many defects such as, it is difficult and troublesome to route the circuit through cable alarm system and impact the room's aesthetics. Wireless transmit / receive module is used to solve the problem of mutual interference between wireless signals, the user just need to distinguish the bit address of different signals. Automatic dial alarm is low-cost because the system dials the user-setting phone number spontaneously by popular phone net and voice-prompting for warning and alarm. Modulation design makes the system easy to expand.This system owns strong anti-jamming ability because both software and hardware are considered. This system is practical, and the function is flexible, and the operation is convenient with high reliability, which can be used extensive in banks, stores and family, and other places.