| Microseismic monitoring technology plays an important role in safety monitoring and assessment of buildings or engineering projects,production activities of mines,fracture location monitoring during shale gas or oil exploitation,and reservoir-induced earthquake monitoring.In general,a certain number of microseismic data acquisition nodes are arranged in the area to be monitored.The acquisition nodes transmit the collected data to the host server of the microseismic monitoring center through the microseismic data transmission system for data interpretation and visualization.For different using environment using a different way of data transmission,generally USES optical fiber or cable under mine transport,in the field of vision is open,ravines deep place,such as river on both sides of the dam monitoring,the cliffs geological activity monitoring,optical fiber and cable transmission there are wiring difficulties,maintain the high cost problem.However,the use of WLAN,4G,Zigbee and other wireless transmission modes has the problems of limited transmission distance,dependence on base station facilities and insufficient transmission rate.In view of the above situation,this paper designs a microseismic data transmission system based on mesh network.The routing protocol used in Mesh network is BATMAN.Adv.In the case of reduced wired transmission,the acquisition node is usually battery-powered.Due to the characteristics of mesh network relay forwarding and multi-hop transmission,some key nodes will exit the network early because of the fast energy consumption,resulting in incomplete or even paralysis of the network.To solve this problem,an improved scheme of energy regulation based on batbat.adv routing protocol is designed in this paper.The paper mainly from the following aspects to elaborate the work content.1.The routing discovery and decision mechanism of batbat.adv routing protocol,the format of packets,the calculation process of protocol measurement,and the design idea of the existing energy regulation strategy are studied.Provide theoretical basis for protocol improvement.2.the operating principle of the microseismic monitoring system is analyzed in detail,and the overall scheme of the microseismic monitoring system based on mesh network,the battery metering module that provides energy index for energy regulation,and the Ethernet communication module that communicates between the acquisition node and the mesh network node are designed.3.In view of the existing network simulation platform does not support the BATMAN.Adv protocol simulation,BATMAN.Adv work in data link layer,using soft routing idea to set up the simulation platform,simulation platform of running mechanism is analyzed in detail,in chain topology and formats in the topology,respectively for the routing protocol used energy regulation scheme with routing protocol should not be used energy regulation scheme of comparative experiments,respectively,and the data receiving node in different topology position has carried on the contrast experiment,the results show that the feasibility of energy control solutions,The experimental reference of the location of the microseismic data receiving node(central server access point)in the topology is given.4.Build mesh network node on WNDR4300 router.It is used to test the performance of mesh network networking,multi-hop bandwidth and microseismic data transmission,and the results show that the improved scheme of mesh network and batman.adv energy regulation is feasible for microseismic data transmission system. |
PDF Full Text Request