传感技术学报2025，Vol.38Issue(4)：756-764,9.DOI:10.3969/j.issn.1004-1699.2025.04.026
基于无线无源电容传感的蜂窝夹层结构渗水检测技术研究
Water Intrusion Evaluation Technique for Honeycomb Sandwich Structure Using Wireless Passive Capacitive Sensor
摘要
Abstract
A honeycomb sandwich structure water intrusion detection technology based on wireless passive forked capacitor sensor is pro-posed to address the problem that the honeycomb sandwich structure is susceptible to external influences during use,resulting in minor defects on the surface of the panel,which can cause water intrusion in the interior and affect its normal use.the technique is based on the principle of capacitive detection,combined with wireless power transmission,information is transferred by means of electromagnetic coupling,which enables better in-situ detection of water intrusion in honeycomb sandwich structures without contacting the target to be measured.Based on the equivalent circuit and impedance characteristics,detection mechanism of the sensor is analyzed,the method for measuring water intrusion using the half-resonance impedance point of the first resonant peak is also proposed.A signal conditioning module for the sensor is designed and a detection system is built to implement the technique.Experimental results show that the pro-posed wireless passive water intrusion detection technique is effective for the in-situ detection of water intrusion in honeycomb sandwich structures,there is a significant change of approximately 300 mV in the amplitude of the system output signal as the water intrusion of the honeycomb sandwich structure varies from 0％to 100％,and the relative fitting error is less than 2.5％,proving that the test tech-nique is able to achieve a comprehensive assessment of the water penetration status of the honeycomb sandwich structure.关键词
无线无源/叉指电容传感器/蜂窝夹层/渗水/电磁耦合Key words
wireless and passive/interdigital capacitance sensors/honeycomb sandwich/water intrusion/electromagnetic coupling分类
机械工程引用本文复制引用
韩庆,殷晓康..基于无线无源电容传感的蜂窝夹层结构渗水检测技术研究[J].传感技术学报,2025,38(4):756-764,9.基金项目
国家自然科学基金项目(52075549) （52075549）
"泰山学者"青年专家计划项目(tsqn202312136) （tsqn202312136）
