The Research Of Remote Test And Control Technology Based On Internet & Its Application In The Intelligent Home

As various kinds of technology including Internet, bottom network and control developing quickly, and the demands for informationization, intelligent and networked becoming more and more important in all trades and professions, the technology of remote test and control became a focus investigated further by the experts in the control field and IT trade.In this paper, two main components of the remote test and control system are probed into deeply, including the bottom test and control network, the methods of the bottom network or embedded equipment accessing Internet, at the same time the merit, shortcoming and suitable situation of these methods are summarized. To construct low-grade embedded gateway, the TCP/IP lean software used on the Single Chip is developed. Aimed at the problem that the embedded Web server can not be satisfied with the dynamic requirements of the test and control system because of the limited MCU resource, the EGI (embedded gateway interface) based on form and variable replace is put forward. Then the bottom control network of the intelligent home based on LonWorks is constructed. The nodes of the bottom control network are designed, such as intelligent home control node, temperature and humidity gather node, temperature and humidity control node, meter reading node, lighting node, security node and so on. Depending on the flexible construct and communication mode of LonWorks, several kinds of communication ways on the control network are realized. On the basis of above research, a kind of embedded gateway based on low-grade MCU is developed, which can offer Web services while connecting Lonworks to Internet, so the whole intelligent home network system turns into a remote test and control network system based on Internet, which can remotely monitor and control the Family environment and equipments with the B/S (browser/server) mode.The intelligent home network systems based on Internet designed in this paper break the traditional method of LonWorks accessing Internet, save some hardware and software, lower the cost, so it is more suitable for our country conditions. The results of simulation and experiments show the validity and practical value of this kind of method.