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在应急救援中,强震发生后的余震、泥石流和滑坡等次生地质灾害将造成进一步的破坏、人员伤亡和财产损失,因此相关的实时灾情信息传递极为重要。针对实时灾情速报中的大地震动分布式测量需求,采用无线网络技术,提出了一种基于置信传播的分布式震动测量机制,设计出了大地震动分布式测量系统。通过仿真对基于信号强度差的置信传播信息融合算法进行了分析验证,结果表明所提算法有效提高了系统性能。
In emergency rescue, secondary earthquakes such as aftershocks, debris flows and landslides after strong earthquakes will cause further damage, casualties and property losses. Therefore, it is very important to transmit relevant real-time disaster information. In order to meet the demand of distributed measurement of earthquakes in real-time disaster alert, a distributed vibration measurement system based on belief propagation is proposed by using wireless network technology. A distributed earth vibration measurement system is designed. Simulation and verification of confidence-propagation information fusion algorithm based on signal strength difference show that the proposed algorithm can effectively improve the system performance.