Earthquake Resumption Control via Seismic Convergence
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Solution Overview
Problem
Existing earthquake disaster prevention systems face inefficiencies in judging the appropriate timing for resuming operation device motion after an earthquake, leading to potential defective operations due to premature resumption before seismic activity has fully converged.
Innovation Solution
An earthquake disaster prevention system that includes an estimation section for determining earthquake size from P-waves, a stopping control section to halt operation device motion when the earthquake exceeds a stopping reference value, a calculation section for assessing S-wave activity, and a convergence judgment section to ensure motion resumption only when seismic activity meets predetermined convergence conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If operation devices are manually recovered after stopping at earthquake detection, then operational control can be adjusted, but judgment of appropriate resumption timing becomes difficult and operation efficiency decreases
Solution Approach 1:
The system enables automatic resumption of operation devices by using the earthquake detector and convergence judgment section to autonomously determine when seismic activity has converged, eliminating the need for manual judgment and recovery operations while maintaining reliable earthquake response
2Ease of operation
If operation is resumed automatically after a predetermined period of time, then recovery process is simplified, but resumption may occur before earthquake convergence resulting in defective operation
Solution Approach 1:
The convergence judgment section continuously monitors earthquake parameters and compares them against convergence criteria, providing feedback-based control that automatically adjusts resumption timing based on real-time seismic conditions rather than fixed time intervals, ensuring both ease of operation and safety
3Productivity
If uniform automatic resumption is implemented, then operational simplicity is improved, but premature resumption before earthquake convergence causes defective operation
Solution Approach 1:
The system transitions from static uniform resumption timing to dynamic adaptive timing by using the convergence judgment section to evaluate real-time earthquake parameters and determine optimal resumption moments, achieving both high productivity through automation and high precision in timing based on actual seismic convergence
Data Source
AI summary
An earthquake disaster prevention system having: an estimation section to estimate a size of an earthquake from a P-wave of the earthquake detected by the earthquake detector; a stopping control section to control to stop the motion of the operation device when the size of the earthquake estimated by the estimation section exceeds a stopping reference value; a calculation section to calculate at any time the size of the earthquake from the S-wave of the earthquake detected by the earthquake detector; a convergence judgment section to judge convergence of the earthquake by judging whether a predetermined earthquake convergence condition is satisfied from the size of the earthquake calculated by the calculation section; and a resumption control section to resume a predetermined motion of the operation device stopped by the stopping control section when the earthquake is judged to have converged by the convergence judgment section.