| 王贤,高尚,杨尚可,马立军,江剑,雷一菲.基于开口谐振环的小型化无线无源应变传感器阵列设计[J].电子测量与仪器学报,2025,39(5):40-50 |
| 基于开口谐振环的小型化无线无源应变传感器阵列设计 |
| Design of miniaturized wireless passive strain sensor arraybased on split ring resonator |
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| DOI： |
| 中文关键词: 射频识别；开口谐振环；谐振频率偏移量；无线应变测量 传感器阵列 |
| 英文关键词:radio frequency identification split ring resonator resonant frequency shift wireless strain measurement sensor array |
| 基金项目:国家重点研发项目基金、中央高校基础研究基金(309181A8804,30919011263)、江苏省自然科学基金（BK20190464）项目资助 |
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| Author | Institution |
| Wang Xian | School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China |
| Gao Shang | School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China |
| Yang Shangke | School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China |
| Ma Lijun | School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China |
| Jiang Jian | School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China |
| Lei Yifei | School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China |
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| 中文摘要: |
| 现有无线无源应变传感器存在检测方向单一、灵敏度低、尺寸大等问题，难以满足复杂受力条件下飞机机翼等大型金属结构应变状态评估的需求。针对这一问题，利用开口谐振环高辐射能力、低损耗以及高品质因数等优点，基于三角函数与矢量分解原理设计了一种基于开口谐振环的小型化无线无源应变传感器阵列。该传感器阵列由3个夹角120°的传感器构成，通过提取各传感器谐振频率偏移量实现金属结构件上应变大小和方向的反演。通过ADS软件得到传感器的阻抗参数，以传感器谐振频率为优化目标采用HFSS软件完成了传感器结构小型化和阻抗匹配优化设计，并利用COMSOL软件进行“力-磁”耦合分析验证了传感器的应变检测性能，随后完成传感器制备。实验结果表明，传感器在电长度方向和电宽度方向的灵敏度分别为-1.517和-0.732 kHz/με，所提出的传感器阵列应变大小的检测精度在8.5%以内，应变方向检测误差在10°以内。该传感器阵列能够实现对金属结构表面应变大小和方向的检测，具有灵敏度高、尺寸小以及成本低等优点。 |
| 英文摘要: |
| Existing wireless passive strain sensors suffer from limitations such as single-direction measurement, low sensitivity and large size, making them unsuitable for strain state evaluation of large metallic structures including aircraft wings, under complex loading conditions. To address these issues, a miniaturized wireless passive strain sensor array is proposed based on split ring resonator(SRR) with the advantages of high radiation capability, low loss, and high quality factor and the principle of trigonometric functions and vector decomposition. The proposed sensor array consisting of three sensors arranged at 120° angles can reconstruct the magnitude and direction of strain field by extracting the resonant frequency shift. After the impedance parameters of the sensor are acquired by ADS software, the sensor structure miniaturization and impedance matching optimization design are carried out by HFSS software, aiming at the target of resonant frequency optimization. In addition, “force magnetic” coupling analysis in COMSOL software verifies the performance of sensor’s strain detection. Furthermore, the fabrication of the sensor is implemented based on the above analysis and optimization. Experimental results show that the sensitivity of proposed sensor in the electrical length and width directions is -1.517 and -0.732 kHz/με, respectively. The proposed sensor array achieves a strain magnitude detection accuracy within 8.5% and a direction detection error within 10°. The sensor array can achieve strain magnitude and direction detection on metallic surface with the ability of high sensitivity, compact size, and low cost. |
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