| 摘要 |
An improved area earthquake warning system based on distributed decision making method, which makes such a system affordable in the region where wired and wireless mobile communication infrastructures are too expensive to build. The present invention can provide seconds, even tens of seconds for users to seek shelter to reduce injuries and lives lost. An exemplary embodiment of the invention described herein comprises a network of earthquake detection sites covering a geographic region with four types of earthquake detection sites. Instead of sending all raw ground motion signals to a remote central processing site, these detection sites send processed earthquake parameters to a nearby alarm site to decide if an earthquake alarm broadcasting should be triggered. This method shortens the response time, decreases the false alarm rate, and provides unlimited scalability. Further more, this invention provides self-check mechanism to eliminate system malfunction time.
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