Vibration Analysis Mode Switching for Earthquake Disaster Assessment
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Solution Overview
Problem
Current building monitoring systems cannot quickly determine the disaster situation of residents during an earthquake, as they often incorrectly assess confined individuals as not being in distress due to movement within a confined space.
Innovation Solution
A vibration analyzing system with a vibration detecting unit, an earthquake-vibration determining unit, and a control unit that switches between analysis modes to differentiate between resident activity and earthquake-induced vibrations, allowing for rapid analysis of both resident and building conditions during an earthquake.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the life monitoring system analyzes vibration to detect resident activities, then it can monitor resident behavior, but it cannot distinguish between normal activity and earthquake-induced vibration, leading to false assessments of resident safety
Solution Approach 1:
The system dynamically switches between two analysis modes based on earthquake detection: a first analysis mode for normal resident activity monitoring and a second analysis mode for earthquake disaster assessment. This dynamic adaptation allows the system to optimize its analysis approach according to the current situation, resolving the contradiction between monitoring accuracy and disaster detection reliability.
Solution Approach 2:
The system changes the analysis parameters and conditions based on the detected situation. In normal conditions, it uses parameters suitable for detecting resident activities, while during earthquakes, it switches to parameters optimized for detecting building deformation and disaster situations, thereby achieving both accurate activity monitoring and reliable disaster detection.
2Measurement precision
If the building monitoring system focuses on structural deformation analysis, then it can detect building damage, but it cannot quickly determine the disaster situation of residents confined in the building
Solution Approach 1:
The system segments the analysis into two distinct modes: one focused on building structural deformation and another focused on resident activity patterns. By separating these analysis functions, the system can simultaneously monitor both building safety and resident conditions, quickly determining disaster situations without compromising structural assessment accuracy.
Solution Approach 2:
The monitoring system is designed with multi-functionality to perform both building structural monitoring and resident activity analysis using the same vibration detection infrastructure. This universal approach allows the system to quickly assess both building damage and resident disaster situations simultaneously, reducing response time while maintaining detection accuracy.
3Device complexity
If the system uses a single analysis mode for vibration detection, then the device complexity is reduced, but it cannot quickly adapt to differentiate between resident activity and earthquake conditions
Solution Approach 1:
The control unit dynamically selects and switches between analysis modes based on earthquake detection, allowing the system to adapt its complexity to the situation. During normal conditions, it uses a simpler activity monitoring mode, while during earthquakes, it activates a more sophisticated disaster assessment mode, achieving high adaptability without permanently increasing device complexity.
Data Source
AI summary
A vibration analyzing apparatus includes a vibration detecting unit set in a building where a person can reside and configured to detect vibration and output a detection signal based on the detected vibration, a mode determining unit configured to determine presence or absence of vibration of the building caused by an earthquake, and a control unit including a vibration analyzing unit configured to analyze the vibration on the basis of the detection signal, the control unit setting an analysis mode of the vibration analyzing unit. The control unit sets one of a normal time analysis mode for causing the vibration analyzing unit to analyze a vibration waveform indicated by the detection signal on the basis of a first condition and obtaining information concerning residence of the person and an earthquake analysis mode for obtaining information concerning deformation of the building.