Abstract:
With the development of science and technology, people begin to pay less and less attention on the PC、server、switchboard and so on; Nowdays people come to realize the problem, that is how to use the new technology in the peoples’ daily life since the function of hardware are strengthened and its low price. In recent years, the household electrical appliances net catch the eyes of people, especially some enterprises. Since the market of household electrical appliances have no space to widen, the “net” becomes theirs new motive. It has many characteristics, such as the net function、digitalized、stabilized and so on.
There are several ways which can realize the HEA net and automation of live, such as CAN、PROFIBUS and so on. But the Lonworks which put forwarded by ECHELON is the most successful. Different kind of HEAs gathered by it, being a LAN, then connected with internet by means of gateway.
The motive of my design is how to use Lon technology to build a HEAs net. I realized that the connect unit is the base of how to build a HEAs controlnet after I knew the structure and characteristics of Lonworks. The connect unit system based on the nerve chip of Lonworks, assisted with MCU P89C662 to deal with all kinds of signals. Usually, the signals processed by MCU, then transmitted to PC to be monitored. At last, the HEAs will be controlled by a switch which has been defined by people.
Key words:
Lonworks、nerve chip、Lontalk agreement、MCU P89C662