Structural State Evaluation System for Smart Structure Using Multi-Sensing

• US 20150241300A1
• Filed: 02/25/2015
• Published: 08/27/2015
• Est. Priority Date: 02/25/2014
• Status: Active Grant

• Current Assignee: Industry Foundation Of Konyang University
• Original Assignee: Industry Foundation Of Konyang University
• Inventors: Heo, Gwang Hee, Jeon, Joon Ryong
• Granted Patent: US 10,612,996 B2
• Time in Patent Office: Days
• CPC Class Codes: G01M 5/0066 by exciting or detecting vibration or acceleration vibration testing of structures G01M7/00
• CPC Class Codes: G01M 7/00 Vibration-testing of structures; Shock-testing of structures G01M9/00 takes precedence

Abstract

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.

Claims

1. A structural state evaluation system for a smart structure using multi-sensing that evaluates a structural state of the smart structure in real time through an optimal sensor position determining algorithm and a finite element (FE) model improving algorithm, comprising:

a measuring unit deriving a numerical value model of the smart structure by a minimal number of calculations through the FE model improving algorithm; and

a multi-sensing unit connected to the measuring unit through a wireless network and including a plurality of sensors positioned at optimal measuring positions determined by the measuring unit and detecting signals for evaluating the structural state from the smart structure,

wherein the optimal measuring positions of the plurality of sensors for detecting the signals for evaluating the structural state from the smart structure are determined through the optimal sensor position determining algorithm, and

wherein the measuring unit receives measured values by the plurality of sensors of the multi-sensing unit in real time and diagnoses and evaluates the structural state of the smart structure.

2. The structural state evaluation system for a smart structure using multi-sensing of claim 1, wherein the multi-sensing unit includes:

an analog to digital converter (ADC) converting analog signals detected by the plurality of sensors into digital signals; and

a wireless transmitting and receiving device transmitting the digital signals and receiving a vibration control signal from the measuring unit.

3. The structural state evaluation system for a smart structure using multi-sensing of claim 1, further comprising a controlling unit including a damper and receiving a vibration control signal from the measuring unit depending on the measured values by the plurality of sensors of the multi-sensing unit to control an operation of the damper in real time,

wherein the measuring unit diagnoses the structural state of the smart structure depending on the measured values by the plurality of sensors of the multi-sensing unit and generates and transfers the vibration control signal corresponding to the diagnosed structural state, through a preset vibration control algorithm.

4. The structural state evaluation system for a smart structure using multi-sensing of claim 1, further comprising a controlling unit including a plurality of dampers and receiving a vibration control signal from the multi-sensing unit depending on the measured values by the plurality of sensors of the multi-sensing unit to control operations of the plurality of damper in real time,

wherein the multi-sensing unit generates and transfers the vibration control signal corresponding to the structural state of the smart structure diagnosed and evaluated by the measuring unit through a preset vibration control algorithm.

5. The structural state evaluation system for a smart structure using multi-sensing of claim 1, further comprising a power supply unit supplying power,

wherein a main power supply of the power supply unit is at least any one of a solar battery, a wind energy source, and a wave energy source, and an auxiliary power thereof is a lithium (Li) ion battery.

6. The structural state evaluation system for a smart structure using multi-sensing of claim 1, further comprising a storing unit storing and managing at least any one of information on measured signals, information on the optimal measuring positions of the sensors, information on the numerical value model of the smart structure, and information on the structural state of the smart structure.