Automatic Networking Research On Distribution Line Carrier Communication

Based on the analysis of the domestic and foreign development status, channel characteristics, modulation technologies and the requirements of the modulation technology about distribution line carrier communication, LonWorks technology is transplanted into distribution line carrier communication. It designed a LonWorks intelligent node of dual-processor architecture based on PL3150 power line smart transceiver and 32-bit microcontroller MCF52259, which can reduce the external events expenses and play on the superiority of PL3150 and can meet the real-time repuirements of monitoring system depend on the quickly exchange of information between LonWorks intelligent nodes and field equipments based on MCF52259. It discussed hierarchically the required technology theory of LonWorks intelligent node designed, mainly relating to LonTalk protocol, Neuron C, the hardware and software resources of PL3150 and MCF52259. It also designed the interface circuits of PL3150 and MCF52259, power supply, crystal oscillators, clock, reset and Service circuit of PL3150 and the crystal oscillators, reset, and other auxiliary circuits of MCF5259, and completed the programming of PL3150 and MCF52259 with own programming language.At present, the research of power line carrier communication networking method focuses on the way to improve communication distance and reliability by increasing the relay, which is involved mainly the selection of relayes. On the basis of the research of predictive P-persistent CSMA algorithm, it used the ant colony routing algorithm to realize the automatic routing of distribution line carrier communication based on the LonWorks platform, which can adapt to the dynamic changes of the network topology and solve the reliability of distribution line carrier communication.