Research And Design Of Monitoring Platform For Wireless Seismograph Based On Multi-hop Network

With the rapid development of modern society,the demand for resources has also grown rapidly,and challenges have also been raised for various deep Earth exploration equipment systems.Seismic exploration has become one of the mainstream approaches in many physical detection methods and has been widely applied to the regional Geological analysis,oil and gas extraction and other fields.Before the seismic exploration,it is necessary to arrange the survey line and obtain the station information of each acquisition node.During the work,it is also necessary to send commands to the acquisition station and control the work behavior of each station.These functions need to be in the appropriate network communication mode and the specified monitoring platform software.At present,,the mainstream domestic and untethered system is employed to deploy relay AP,many nodes collected in a centralized network topology with the AP Wi-Fi connection,the communication distance is limited this communication mode,and The data transmission rate and network throughput are also difficult to apply to high-precision,large-scale exploration operations;Lack of information sharing system module,can not obtain exploration progress in real time.Therefore,how to make the communication mode of the acquisition node unrestricted in distance,improve the data transmission efficiency of the network and develop a multi-functional monitoring platform software is a problem to be solved.In view of the above problems,based on the self-developed wireless self-positioning seismograph,which is developed by Jilin University,the paper designed a monitoring platform for wireless seismographs based on multi-hop self-organizing networks.Based on actual applications,the acquisition nodes communicate with each other through multi-hop self-organizing network,eliminating the need for relay equipment and overcoming the problem of limited communication distances;and correspondingly developed master control center software with monitoring and information sharing capabilities,extending the platform Functional diversity.The specific research contents are as follows: 1.Topology structure of multi-hop self-organizing network in seismic exploration and data multi-hop implementation.Separately discuss the network access authentication,reliability guarantee,data transfer congestion control,indexing and fault tolerance control to improve the overall network communication quality.2.Design the monitoring module server software.Using MFC design framework,multi-threaded asynchronous socket based network communication is used to serve the connection of multi-client aggregation nodes,and the communication flow of accessing network nodes,recovery of status information and sending of related control commands is designed and implemented;3.Design the information release module.Based on the MVC development framework,hierarchical design concepts are used to design the performance,control,and data layers,the acquired work status information of the collection stations is finally published via the web server for browsing by various terminal devices.This paper tests the network quality of 50 nodes in a multi-hop ad hoc network,the average transmission rate and network throughput between hops are 2.1~3.2 Mpbs and 35.8~46.3 Mpbs,respectively,which are higher than the corresponding indicators of centralized network mode,Validated the advantages of multi-hop self-organizing networks for seismic exploration.Moreover,both the monitoring module and the information sharing module realize preset functions and achieve the effect of monitoring and information sharing of multi-hop networks.