Abstract: Using ZigBee technology, the network of internal control node was achieved in smart home system. On this basis, a smart home security system was designed. The infrared hydroelectric sensor was used to detect whether there is a human intrusion. The smoke and gas sensor was used to detect the indoor environment, such as smoke, carbon monoxide and other parameters. Through the ZigBee wireless network, the signals of each sensor in this system were gathered into the main controller. According to the control strategy, the control decision was made by main controller, such as whether to activate the phone alarm, opening and closing windows and other actions. In this way, the anti-theft and fire prevention functions of smart home were achieved.

Key words: ZigBee, smart home, security