Intelligent Alarm Technology Study

With the fast development of residence industry, intelligent architectural extend into house constantly. Among the intelligent system, the system which link with resident's living security is intelligent alarm system. It is built up for guarantee the security. It include finding the invading behavior, making sonic and phonic alarm to scare the thief, memorize the field image and voice for proof, reminding the watch. Intelligent alarm system is based on the computer technology, communication technology and network technology. The alarm processor can link with PSTN and web by the telephone line and wide band interface in house. Then, the alarm system may implement guard against theft, inspect, alarm, and be managed through network.According to the degree of complicacy and intelligence, the deployment and constitute of security system is very different. The simple way is to make up of the security system with subsystems independently. Certainly, the result is not good. The better way is make up of security system by some aims. For example, the system is constituted by network and intelligent way. On the other hand, the ability of system which can remote control and watch TV image through internet by PC, server, and workstation is a important criterion to scale the grade of security system. But, the current security system not only contain just single equipment usually, but also don't link with computer and network. The concern of system is dim. Because of the development of communication, it is affirm that security system will use network and computer more and more. The functions will enhance quickly. And the system shouldkeep up with the development of network technology, integration technology, video technology and intelligent technology.This paper has analyzed the defect of present alarm system, and designed a kind of improved alarm system. The system conclude user's alarm host and alarm center. The user's alarm host link with the alarm center by Public Switched Telephone Network(PSTN). The alarm center consists of a center host and a personal computer. The center host link PC by RS232 serial bus. The paper will introduce the alarm center simply, while describes the user's alarm host in detail. The user's alarm host consists of 10 modules. The program that is embedded in AT89C52 singlechip can control the work status of the host. The program made by C language. The alarm host has made many measure for anti-interfering. So the host can work stably.At last, the paper looks forward the alarm system prospect. For example, the alarm system could use expert system. The expert system includes many experience and knowledge just as an alarm expert, so the alarm system can accomplish a very difficult task. Then, the intelligence of the alarm system enhances.