Study And Design Of The Security System On Smarthome

With great improvement of the standard of people's living, as well as the rapid development and abroad application of microelectronics, automation and computer ability, the residential security to people is been more and more important. The security keeping away system of Smarthome is emerged as the times required.In this text, the development survey of security keeping away technology of Smarthome in the world is debated. According to the developmental direction of the technology overseas and the situations of our countries, we have researched and designed a kind of intelligent alarm system for Smarthome. It includes the functions of theft-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, Phoroelectric smoke sensor and CO sensor are integrated to a compound detector for fireproof. The multi-sensors make the least fail to alarm and false alarm and enhance the reliability of the system. When detectors have detected any abnormality signals, an interrupt request will be sent to the MCU. Next the MCU control the interface circuit of telephone to accomplish simulated off-hook, then auto-dial by dial-up circuit of DTMF, and play the phonetic information which has been recorded beforehand by phonetic circuit, to tell the user and the surveillant center of the section which circs has occurred, so that they can take corresponding step on time. In addition, the code validation has been intercalated in the system. Users can input and modify the code by keyboard. In order to buildup the systemic security and stability, the system has standby power supply and can inspect whether the wire and the power break or not.The system is based on a great deal of correlative experiments. It has been validated in hardware and software's emulation, so it has some definite practicability. As far as research and exploitation later, this has some definite referenced meaning.