Design And Implementation Of Reliable Transmission In Distributed Monitoring System Of Seismic Hydrogen

Distributed Monitoring and Analysis System of Seismic Hydrogen analysis andprocess the data measured by the hydrogen measurement sensors located in differentplaces, then the data is uploaded to the central data server of Seismological Bureau tomake unified backup and management. The data transmission requirements of the systemis not a smooth process, which has intermittent and randomness. And the networkconnection needs to adapt to different network environments (Wired access network,Radio base station and Satellite link). The system needs to maintain a long connection. Forthe system’s special needs of data transmission and network connection, this thesis achievea simple, fast, reliable, credible transmission module.The reliable communication that achieve in this thesis mainly study the followingfunctions. Achieve data transceiver module, which provide additional assurance of reliabletransmission above the transport layer, and ensure reliable data transmission. Even if thereis an error, it should be able to react to the user the exact type of error and the cause of theerror timely. Monitor network status with heartbeat mechanism, so we can always knowwhether the network is connected. Base on the P2P mechanisms achieve the HTTPStrategy. The network condition changes soon, and there are a variety of destabilizingfactors and unpredictable impact affect the quality of the network transmission. With theHTTP strategy of P2P, not only we can greatly improve network utilization, but also wecould save the user’s time. Achieve file integrity check and user authentication function.According to the transmission rate of the last N packets, uses multiple threads to adjust thedata transmission rate, and ultimately achieve the purpose of the network flow control.Before and after the file transfer, need to complete two additional work--userauthentication and file integrity check, which can increase file transfer process safety andreliability.After testing reliable transmission meticulously in normal and abnormal network, weprove the design meets the design requirements, and it completes the undertaken tasks inthe overall system.