Smart Structure Sensor Positioning for Real-Time Vibration Control
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Solution Overview
Problem
Existing structural health monitoring systems face challenges in efficiently determining optimal sensor positions and accurately evaluating structural safety in real-time, especially for large and complex constructional structures, due to high computational demands and the need for extensive data processing.
Innovation Solution
A structural state evaluation system using multi-sensing that employs an optimal sensor position determining algorithm and a finite element (FE) model improving algorithm to efficiently position sensors and derive numerical models, enabling real-time measurement and analysis of structural safety through a wireless network, with a controlling unit for vibration control and power supply units like solar batteries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of sensors is increased to improve measurement accuracy and coverage, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent applies preliminary action by performing finite element model improving algorithms and optimal sensor position determining algorithms before the actual monitoring process. These preprocessing steps establish an optimized sensor configuration that maximizes measurement accuracy while minimizing the number of sensors required, thereby resolving the contradiction between measurement precision and device complexity
Solution Approach 2:
The patent changes the parameter of sensor positions from arbitrary or uniform distribution to optimally determined positions based on structural characteristics and vibration modes. This parameter optimization allows fewer sensors to achieve the same or better measurement accuracy, resolving the contradiction between measurement precision and device complexity
2Reliability
If real-time monitoring and vibration control are implemented, then structural safety evaluation is improved, but energy consumption increases
Solution Approach 1:
The patent performs baseline structural identification and optimal sensor position determination before real-time monitoring begins. This preliminary action creates a reference model that enables more efficient real-time analysis, reducing the computational energy required during continuous operation while maintaining high reliability in structural safety evaluation
Solution Approach 2:
The patent implements feedback mechanisms where measured vibration data is continuously compared against the baseline model, and control actions are taken based on deviations. This feedback approach enables real-time safety evaluation with optimized energy consumption by only processing significant deviations rather than continuously analyzing all data points
Data Source
AI summary
Provided is a structural state evaluation system for a smart structure using multi-sensing capable of coping with and controlling vibrations in real time by reasonably and efficiently determining positions of sensors included in a constructional structure using an optimal position determining algorithm and defining a baseline structure using a finite element (FE) model improving algorithm to measure and acquire various information on the smart structure through multi-sensing and evaluate and analyze structural safety.