| View of the current status and characteristics of China's Power Line Communication, combined with the network structure of power line remote meter reading system, then a proper project is proposed, which is data transmission device based on automatic routing in power line-carrier. Then hardware and software of data acquisition device are designed and accomplished based on the PL3105C, after analyzed the protocols of PLC at present, a basic frame of the automatic routing protocol is put forward and a routing model is also given. When the point-to-point communication failed, this model can automatically search the relay path and can adapt to the time-changing characteristics of power line channel, the algorithm also can ensure the validity of the data transmission. Finally, the installation of communications performance has been tested, the results showed that the developed data transmission device has met the anticipated requirements. |
