北斗抄表系统中通信规约的处理机制

Processing Mechanism of Communication Protocol in Beidou Meter Reading System

为解决北斗抄表系统中采集层和通信层通讯规约不一致的问题,提出了一种规约的处理机制。对采集层的DL/T 645数据包先进行拆包,将拆分后的子数据包嵌入北斗规约的数据格式中进行透传,在接收端对所有子数据包进行重新组包,完成电能量数据的传输;采用长报文重传机制来保证数据传输的可靠性。通过规约处理,能够将无公网信号覆盖地区的采集终端电能量数据上传至系统主站,并满足实时、安全、可靠的需求。

In order to solve the problem of inconsistent communication protocol between the acquisition layer and communication layer of electric power acquisition system based on Beidou communication technology,a protocol processing mechanism is proposed.Dismantle the DL/T 645 data packages of the acquisition layer at first,transmit the split subpackage is embedded in the data format of Beidou protocol.Then regroup all the subpackages at the receiving end,so that to complete the transmission of electrical energy data.In order to ensure reliability of data transmission,a long message retransmission is used in the paper.It is possible to upload the electric energy data of the area without public network to the main station by using the processing mechanism,and meet the real-time,safe,reliable demand.