Design And Implementation Of Application Layer Of Broadband Micropower Communication Module

The rapid development of the ubiquitous power Internet of Things has brought more application scenarios and a larger application space.As a part of the ubiquitous power Internet of Things,the electricity information collection system is also developing and generating new application requirements.However,the current application protocol can no longer meet the increasing demands of electricity information collection services,nor can they meet the new demands of the ubiquitous power Internet of Things.Therefore,based on the existing protocol,this thesis designs and implements the application layer of the broadband micropower communication module for broadband micropower communication technology and new application requirements.Application functions include meter reading,upgrade,broadcast time correction,communication test,event reporting,etc.Aiming at the problems of single,long period and low efficiency meter reading method in current electricity information collection system,an efficient meter reading method is applied.Firstly,the meter reading method extracts key information of meter reading messages,constructs meter reading beacon entries,and uses the beacon frames broadcasting periodically in the network to send meter reading information.It's unnecessary for master node to send complete meter reading commands to child nodes in sequence,which reduces signaling cost,as well as shortens meter reading time.Secondly,the method utilizes an edge computing solution and uses proxy nodes to control the meter reading of child nodes,which reduces the data flow of the master node and avoids communication congestion when a large amount of data is sent to the master node.Finally,the laboratory hardware environment is used to build a 2-layer network of 6 nodes.After the network was completed,300 meter readings were performed.The results shows that the success rate of meter reading is close to 100%.Used the efficient meter reading method,the average time required by the second-level node is about 40.5% shorter than the traditional meter reading method.Aiming at the problems of low efficiency and incomplete upgrade schemes in current electricity information collection system,this thesis proposes an efficient and complete upgrade mechanism.Through this mechanism,the master node can broadcast and upgrade modules from different manufacturers in different batches.In the solution,by introducing edge computing,the efficiency of upgrade file transmission and upgrade package reissue is improved.In addition,it also improves the handling of abnormal situations.Finally,test cases are designed,unit testing verifies the consistency of the code implementation and the protocol.System integration test results show that the upgrade success rate of this solution is 100%.Compared with the traditional upgrade method,the time of the first level node is reduced by about 48.4%,and the time of the second level node is shortened by about 54.4%.