Development Of Smart Home System Based On Power Line Carrier

Smart home technology is based on the Internet of Things concrete realization. Such as embedded technology, communications technology, sensor technology and digital signal processing technology Dengjun in intelligent home system, a variety of intelligent devices can be composed of a smart home network. Thus, the user will be able to experience the warm and secure home life. In the context of rapid technological progress of things, smart home has become an area of rapid development.There are currently two of the more common form of home internal network by:a by a twisted pair, coaxial cable, telephone lines and cable transmission power line constructed; two by the wireless transmission WIFI, Bluetooth, GSM and Zigbee, etc. composition. But traditional wired, re-wiring must be used to transmit control signals, wiring cumbersome and complex work of engineering, the cost will substantially increase; although wirelessly without re-wiring and itself has a strong flexibility and mobility, but the home various facilities and buildings obstruct the entire signal transmission; in addition, all signals within the radio wave range of the broadcast itself is actually very easy to listen to, it will bring the disclosure of user communication information.For the above problems, this paper designs combine embedded technology and power line carrier-based Smart Home System Power Line Carrier, and system technology. Thesis describes several different power line carrier technology, such as frequency-hopping technology, chaos technology, spread spectrum technology and orthogonal frequency division multiplexing, etc., from the perspective of the principle was introduced, and the characteristics of the multi-selective fading Jin carrier channel, in both directions and more fresh FIR filter attenuation model and the model simulation; then design a smart home system based low voltage power line carrier communication, to S3C2400 chip as the main processor, the completion of the main control circuit and communication circuit It designed to achieve the main operating system migration, and the preparation of the relevant functions of the program. System to complete the internal domestic intelligence operation, to achieve access management and security functions; set up household internal energy threshold and triggered power monitoring and alarm circuits; home interior lights intelligent switching operation; household windows rain threshold setup and operation of the motor to change the window status; completion of the external user through the mobile phone network to achieve the intelligent home monitoring and operation.