Multi-Sensor Earthquake Detection to Prevent False Alarms
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Solution Overview
Problem
Existing earthquake detection systems are prone to false alarms due to misjudgment caused by ground vibrations from human activities, and lack effective backup systems to ensure accurate detection in high-value areas like administrative agencies and financial institutions.
Innovation Solution
A combined configuration of free field sensors, structural sensors, deep well seismographs, and remote signal sources is employed, with multiple sensors at different locations agreeing on earthquake detection to minimize interference from unnatural factors, and a remote signal source providing backup verification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single earthquake detector is deployed, then the cost of deployment is reduced and the scope of blind spots is narrowed, but the system is prone to false alarms due to ground vibrations from human activities
Solution Approach 1:
The system divides the detection function into multiple independent sensors deployed at different locations (free field, deep well, structural positions). Each sensor segment independently monitors for earthquake signals, and their combined output provides robust detection that eliminates false alarms from local ground vibrations while maintaining manageable individual sensor complexity
Solution Approach 2:
The system merges signals from multiple sensors located in different environments (free field sensor, deep well seismograph, structural sensor, remote signal source) into a unified detection system. The host integrates these diverse sensor inputs to make a combined judgment, merging their complementary strengths to achieve high reliability without excessive overall complexity
2Reliability
If multiple sensors are deployed in different environments, then false alarms from ground vibrations are reduced, but the system complexity and deployment cost increase
Solution Approach 1:
The detection system is segmented into four distinct sensor types deployed in different environments, each contributing uniquely to false alarm reduction. The segmentation allows the system to achieve high reliability through environmental diversity while keeping each individual sensor component relatively simple and well-understood
Solution Approach 2:
The host serves as a universal integration platform that processes inputs from multiple different sensor types (free field, deep well, structural, remote). This multi-functional host consolidates the complexity of managing diverse sensors into a single coordinating unit, reducing overall system complexity while maintaining the benefits of multiple sensor deployments
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 configuration significantly reduces the rate of false alarms and improves detection accuracy, minimizing economic losses and inconvenience from unnecessary evacuations in high-value areas.
Implementation Method 1
at least one of which is disposed below a ground surface at a depth greater than or equal to 20 meters as a deep well seismograph
Implementation Method 2
at least another one of which is disposed on a structure as a structural sensor
Data Source
AI summary
An earthquake detection system is disclosed. The earthquake detection system includes a main sensor, a first backup sensor, a second backup sensor and a third backup sensor. The main sensor is disposed on a free field. The first backup sensor is disposed on a structure. The second backup sensor is disposed below a ground surface at a depth of at least 20 meters. The third backup sensor is disposed at a remote end relative to the main sensor, and outputs a remote signal through a network so as to avoid misjudging the occurrence of earthquakes because of unnatural factors, and prevent the vibration caused by human activities from interfering with the detector. The earthquake detection system achieves the effect of verification through a plurality of sensors installed in different positions. Only when all the sensors confirm that there is an earthquake, an earthquake warning will be issued to the protected place.