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Design of the Smart Home based on embedded system

Smart home is a house that uses information technology to monitor the environment, control the electric appliance and communicates with the outer world. Smart home is a complex technology, at the same time it is developing. A sample house environment monitor and control system that is one branch of the Smart home is addressed in this paper. The system is based on the embedded system and can act as a security guard of the home. The system can monitor the temperature, humidity, gas density, water immersion of the house and have infrared sensor to guarantees the family security. The system also has network and telephone connection to receive the owner's command and send the alert to the owner. The whole system includes a main control unit and input/output unit. The main chip of the main control unit is the S3C44B0X that is a 16/32 bits RISC processor and based on ARM7 core. In the main control unit, the use of 5 inch LCD and the touch screen provide a well user interface for handlers, the LAN/telephone interface provide the tools to communication. The muC/OS-II software core manages the whole unit work as a whole system. The input unit includes many sensors and its circuit, the information form the input unit is a base of the main control unit. The output is the action part of the main control unit it drives the alert and the switch of the electric appliance