Multi-triggering Earthquake Detection via Spatial Separation
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Solution Overview
Problem
Earthquake detectors are frequently triggered falsely by human-induced vibrations, leading to unnecessary alerts and reducing the reliability of earthquake warning systems.
Innovation Solution
A method involving the deployment of multiple earthquake detectors at specific distances, calculated based on sampling frequency and propagation velocity, to detect vertical accelerations and confirm earthquake occurrences, thereby distinguishing between human-induced and seismic vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single earthquake detector is used, then the device complexity is low, but the reliability of earthquake detection is reduced due to false triggering from human-induced vibrations
Solution Approach 1:
The patent divides the detection system into multiple independent earthquake detectors deployed at different locations. Each detector operates independently, and their results are combined through a logical operation to determine whether an earthquake has occurred. This segmentation allows the system to distinguish between localized human-induced vibrations and widespread seismic events, thereby improving detection reliability while maintaining manageable complexity through modular deployment.
2Measurement precision
If multiple earthquake detectors are deployed, then the accuracy of earthquake detection is improved, but the device complexity increases
Solution Approach 1:
The patent combines the output signals from multiple earthquake detectors through a logical operation (such as AND operation) to determine whether an earthquake has occurred. By merging the detection results in a systematic way, the patent achieves higher measurement precision through cross-validation while controlling device complexity through a unified decision-making framework that processes multiple inputs efficiently.
3Speed
If earthquake detectors are deployed close to each other, then the system responds quickly to local vibrations, but human-induced vibrations are more likely to trigger false alarms
Solution Approach 1:
The patent applies local quality by deploying detectors at specific locations with carefully considered spacing. The spacing is optimized to be close enough to maintain rapid response to seismic events but far enough to reduce the probability that localized human-induced vibrations will simultaneously trigger multiple detectors. This spatial optimization creates different local detection characteristics that collectively improve both response speed and reliability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach significantly reduces false triggering by ensuring that only synchronized and matched vertical acceleration readings from multiple detectors, deployed at different locations, trigger an earthquake alert, enhancing the accuracy of earthquake detection and reducing false alarms.
Implementation Method 1
the plurality of earthquake detectors are utilized for detecting a vertical acceleration of an earth surface vibration
Data Source
AI summary
A method of multi-triggering includes calculating a specific distance according to a plurality of parameters, deploying a plurality of earthquake detectors used for detecting a vertical acceleration of a surface vibration of the earth, and determining whether an earthquake happens or not according to the plurality of earthquake detectors.