A charging pile wireless communication system and communication method

Abstract

The invention relates to a charging pile wireless communication system, which includes a charging pile, a wireless module and a server. The wireless module includes a main control unit and a 2G wireless chip connected to the main control unit, an SD card unit, and a 485 chip. The wireless modules pass through the 485 chip respectively. And the 2G wireless chip performs data transmission with the charging pile and the server; the main control unit includes a sequentially connected FAT file system unit, a message queue processing unit, a data upload and delivery unit, and a link detection unit. The message queue processing unit is connected with a logic The timing processing unit and the main control unit are connected to the SD card through the FAT file system unit, and connected to the 2G wireless chip through the link detection unit. The invention can ensure the integrity of the data interaction between the charging pile and the remote server, guarantee the operation of the operator, and at the same time, the data transmission is smoother, and the processing difficulty of the server application layer is small.

Description

technical field [0001] The invention relates to the field of background data interaction between a charging pile and a server, in particular to a wireless communication system and a communication method for a charging pile. Background technique [0002] At present, once the TCP link of the wireless module is disconnected during data interaction with the background server using the wireless module of the existing charging pile, the data uploaded to the server by the charging pile will be temporarily stored in the built-in cache of the wireless module chip. When the link is disconnected When the network signal is not good, and no new link is established for a long time, the cache space of the chip will gradually fill up, and the previously cached data will have to be cleared to store the current data, so that the charging pile cannot be guaranteed. Upload the complete charging bill data to the server, resulting in incomplete bills and affecting profitability. And when the wir...

AI Technical Summary

Problems solved by technology

[0002] At present, once the TCP link of the wireless module is disconnected during data interaction with the background server using the wireless module of the existing charging pile, the data uploaded to the server by the charging pile will be temporarily stored in the built-in cache of the wireless module chip. When the link is disconnected When the network signal is not good, and no new link is established for a long time, the cache space of the chip will gradually fill up, and the previously cached data will have to be cleared to store the current data, so that the charging pile cannot be guaranteed. Upload the complete charging bill data to the server, resulting in incomplete bills and affecting profitability

And when the wireless link is restored, the traditional wireless module will pack the entire cache into a data packet and send it to the server. After the server application layer receives the packet, it needs to unpack and unpack, and remove incomplete frames from the packet, increasing the The processing difficulty of the server application layer

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