The Study Of Family Security And Health Care Based On Power Line Communication

Power line carrier communication technology refers to a technology which signal transfers in power line by applying carrier modulation/demodulation technology. In recent years, with the development of Internet of Things, smart home and intelligent building as well as the breakthrough in power line in which data is transferred with high-speed development, power line carrier communication technology has been used in communication field more than ever combined with the perfect powerline network in a certain extent.This paper comes up with a new network routing scheme which is more suitable for low voltage power line carrier communication network on the basis of power line carrier module, and the software design scheme which is applied to the hardware platform was tested, and proved that it can play a great role on family security and health care in smart home.The system can be applied to intelligent residential buildings within the scope of the project to meet the needs of the project can be adapted to more applications.The paper is divided into the following sections. In the network part,according to characteristics of the power line carrier communication, the networking part is based on the tree structure, and an improved network routing scheme is proposed. Adopt the way of one leader with multi-followers, the network completes by subarea nodes respond to the major node by turns and the module that the following network respond to the upper one in random. Also, a simulation is tested on network simulator version 2 by simulating network structure of home in order to improve the reliability of power line communication. Applying STM32 on the system as the basic control module by using serial communication as control mode,connects with the power line carrier module so as to achieve the function that connect all the power line carrier. Adopting android system as the control interface, the mobile phone achieves monitoring of all the nodes by connecting with hardware. All the physical connection relies on the power line, and do not need the extra line so as to save the cost of communication. The function of wireless control is achieved by remote monitoring. Through the smart home system, it can not only monitor the family's temperature and humidity, but also can realize the automatic remind of home security monitoring.