基于复合压电效应的PVDF传感器测量性能调控

谢林; 刘迎彬; 范志强; 胡晓艳

doi:10.11858/gywlxb.20230645

基于复合压电效应的PVDF传感器测量性能调控

doi: 10.11858/gywlxb.20230645

谢林^1,,
刘迎彬^1,*, ,,
范志强²,
胡晓艳¹

1.
中北大学环境与安全工程学院，山西太原　030051
2.
中北大学航空宇航学院，山西太原　030051

基金项目: 国家自然科学基金（12072326，12002319）；省部共建动态测试技术国家重点实验室开放基金（2022-SYSJJ-06）

详细信息

作者简介:
谢　林（1998－），男，硕士研究生，主要从事爆炸冲击波测试研究. E-mail：1562176547@qq.com

通讯作者:
刘迎彬（1985－），男，博士，副教授，主要从事弹药毁伤与安全防护研究. E-mail：ybliu@nuc.edu.cn

中图分类号: O347.4
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出版历程
- 收稿日期: 2023-04-20
- 修回日期: 2023-06-13
- 网络出版日期: 2023-08-08
- 刊出日期: 2023-09-01

Measurement Performance Regulation of PVDF Sensor Based on Composite Piezoelectricity

XIE Lin^1
,,
LIU Yingbin^{1,*
, ,},
FAN Zhiqiang²,
HU Xiaoyan¹

1.
School of Environment and Safety Engineering, North University of China, Taiyuan 030051, Shanxi, China
2.
School of Aerospace Engineering, North University of China, Taiyuan 030051, Shanxi, China

摘要

摘要: 为探索低强度冲击波下的柔性测量技术，基于8 mm孔径柔性基底，对聚偏二氟乙烯（polyvinylidene difluoride，PVDF）传感器开展激波管标定实验，根据实验结果，采用不同粘贴方式为PVDF传感器增加不同厚度的阻尼层，加载不同强度的冲击波后，从信号脉宽、灵敏度系数、过冲信号幅值等方面评估传感器的可靠性。然后加载窄脉宽冲击波验证设计的传感器能适应不同脉宽冲击波的测量。实验结果表明：添加阻尼层能够大幅降低过冲信号幅值，提高传感器测量信号脉宽，提升传感器的频响。STS-400（single-side thickened sensor-400）型传感器在两种脉宽信号加载下均得到较好的测试结果，相对测量误差不大于±12%。对比两种脉宽冲击波加载下的信号发现，PVDF薄膜传感器更适合测试脉宽在10 ms以内的信号。设计的新型PVDF传感器可为测量爆炸冲击波信号提供思路。
- PVDF传感器 /
- 激波管 /
- 复合压电效应 /
- 冲击波 /
- 柔性测量
Abstract: To explore the flexible measurement technology under low-intensity shock wave, the shock tube calibration experiment was carried out for the polyvinylidene difluoride (PVDF) sensor based on the flexible substrate with an aperture of 8 mm. According to the experimental results, different bonding modes are used to add different thicknesses of damping layer for the PVDF sensor, and the reliability of the sensor was evaluated in terms of the signal pulse width, the sensitivity coefficient and the amplitude of overshoot signal after loading shock waves with different intensities. Then the narrow pulse width shock wave was loaded to verify that the designed sensor can adapt to the measurement of different pulse width shock waves. The experimental results show that adding damping layer can greatly reduce the amplitude of overshot signal and improve the pulse width and frequency response of sensor measurement. STS-400 (single-side thickened sensor-400) under two types of pulse width signal loading obtained better test results, and the relative measurement error is not greater than ±12%. At the same time, it is concluded that PVDF film sensor is more suitable for testing signals with a pulse width of 10 ms or less. The new PVDF sensor designed can provide ideas for measuring explosive shock wave signals.
- PVDF sensor /
- shock tube /
- composite piezoelectric effect /
- shock wave /
- flexible measurement

HTML全文

图 1 PVDF压电传感器工作示意图

Figure 1. Schematic diagram of PVDF sensor working principle

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图 2 标定实验设备

Figure 2. Calibration of experimental equipment

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图 3 加厚传感器结构

Figure 3. Structure of thickening sensor and each sensor

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图 4 PVDF传感器标定结果

Figure 4. Calibration results of PVDF sensor

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图 5 STS-100传感器标定结果

Figure 5. Calibration results of STS-100 sensor

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图 6 DATS-300传感器标定结果

Figure 6. Calibration results of DATS-300 sensor

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图 7 STS-400型传感器标定结果

Figure 7. Calibration results of STS-400 sensor

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图 8 DAST-300型传感器窄脉宽信号标定结果

Figure 8. Calibration results of DAST-300 sensor with narrow pulse width signal

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图 9 STS-400型传感器窄脉宽信号标定结果

Figure 9. Calibration results of DAST-400 sensor with narrow pulse width signal

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