| 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, With the need of house has been changed from only the living space to multiform needs of quality,function,service and so on。the residential security to people is been more and more important. The security keeping away system of Smart home is emerged as the times required。This text systematically elaborates the design of brainpower safe protection warning controller. In this text, the development survey of security keeping away technology of Smart home in the world is debated at first. Then according to the developmental direction of the technology overseas and the situation of my country studies and designs a automatic alarm system for home safety.In fact, during these yeas, the market has cherished the hope to guarding against theft-warning production. Videlicet, starve for a kind of product. It is better function, simple installation, trusty pursuit, low rate of mistake reply. Whereas the requirement, this design can gather a system of burglarproofing, fire proofing, harmful gas leak proofing .This design includes two sides, hardware design and software design.In hardware part, CPU adopts 89C52 and expanding one 2864 data storage device and one 8155 to increase systematical connects. The head detection part adopts currently popular sensor, SCM serves as control element in the system. Adoptively location gated means nicety realizes know clearly versus at all point real time circular detection, which accurately realize the detection to all points at every moment. There into automatic detection includes : infrared sensor detect stolen conditions,temperature sensor, hydronium smoke sensor completed Fire detection,CO Sensor harmful gas leakage detection。When the sensor detects any off normal signal in case,an IRO is sent to MCU,Then MCU control meeting circle to start up sound and light alarm circuit .at the same time utilize liquid crystal CMOS chip.MDLS1602 to show time .It brings very great convenience .To the question ,adopt alarm and corresponding Emergency measures. For instance: turning on aeration aerator, extinguishing a fire aerator, closing the door and the window.What the software of this system is written and adopted is an assembler language , the train of thought of the whole procedure is clear, it is overall to consider. Can revise the warning critical value, has increased the region and field to use in beginning and course of carrying out ; Can point out which unit coal gas let out and send out the music while reporting to the police, have strengthened humanization. When alarming, it can emanatory differ colorful ray and sound versus alarm type, thereby gathers head humanistic.The textual feature consists: the complex fire sensor made of temperature sensor, smoke sensor, CO Sensor can realize Fire detection. The applications of So many sense technologies debase systemic leak reply, misinformation rate and gather head systemic reliability. The system has configured standby power supply along with lost line and open circuit self-diagnoses, gather head systemic security and stability. |
