Research to Household Sub-Network Development Based on Bluetooth Control Technology

Abstract

With the development of household appliances, the short of communication among them is more and more becoming a problem. At present there is no central point of control among the traditional home appliances, and we cannot access them through Internet. To solve these issues, home network is proposed to connect all the appliances, home PC and portable devices together using network technology. Controlling all the appliances through one single node ( the home network gateway), home network makes life much simpler and convenient. There are several local area network technologies applicable to home network. Bluetooth technology is chosen in this paper as the home networking technology due to its many advantages over others. The implementation scheme of home control sub-network based on Bluetooth serial part profile ( SPP) and the standards of Home Network Platform in China is proposed. According to actual application fields, the communication protocol architecture for this scheme is established by using appliance control protocol promoted by the manufacturers and universal device control protocol ( UDCP) over SPP. Many management functions of appliance terminals are realized such as appending, login, operation, logout and alarming. Implementation methods of appliance terminal based on an entirely embedded single-chip manner and mobile control terminal which is realized by computer simulation are proposed. Analysis and solution of baud rate error brought by inaccurate crystal frequencies are presented. Further discussion about applying ad hoc technology to home control sub-network is carried out.