| 高压电缆悬垂差动互感式非接触位移检测系统 |
| High-voltage cable suspension differential mutual sensing non-contact displacement detection system |
| 投稿时间：2024-11-29 修订日期：2024-12-18 |
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| 中文摘要: |
| 为解决电缆传统接触式传感器存在的精度低、可靠性差等问题，运用电磁感应原理，采用差动互感测量技术，通过发射电路和接收电路的协同工作，研制了一种高压电缆悬垂差动互感式非接触位移检测系统，实现电缆线芯位置的高精度检测。发射电路通过增强85 kHz的正弦信号驱动发射线圈，接收电路将接收到的信号转换为±5 VDC电压信号和(4~20) mA电流信号。为了有效抑制主要集中在接收线圈及其传输路径上的辐射干扰，采用了屏蔽传输线与带通滤波器相结合的方式来减小噪声影响。实验结果表明，在±30 mm位移范围内的传感器线性度和灵敏度性能最佳，线性度高达97.49%，灵敏度达到35.93 mV/mm。该系统显著提高了高压电缆的位移检测精度，克服了传统检测方法的局限性，展现出良好的稳定性和可靠性。 |
| 英文摘要: |
| To solve the problems of low precision and poor reliability of traditional contact sensors in the detection of high-voltage cable suspension, a non-contact displacement detection system of high-voltage cable suspension differential mutual inductance has been developed by applying the principle of electromagnetic induction and adopting the differential mutual inductance measurement technology through the coordinated work of the transmitting and receiving circuits, which realizes the high-precision detection of the position of the cable core. The transmitting circuit drives the transmitting coil by enhancing the 85 kHz sinusoidal signal, and the receiving circuit converts the received signal into ±5 VDC voltage signal and (4~20) mA current signal. To effectively suppress the radiated interference, which is mainly concentrated in the receiving coil and its transmission path, a combination of shielded transmission line and band-pass filter is used to minimize the noise effect. The experimental results show that the best performance of sensor linearity and sensitivity is achieved in the displacement range of ±30 mm, with linearity up to 97.49% and sensitivity up to 35.93 mV/mm. The system significantly improves the detection accuracy of high-voltage cables, overcomes the limitations of the traditional detection methods, and demonstrates good stability and reliability. |
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| 中文关键词: 传感器设计 非接触位移检测 差动互感技术 抗干扰 静态标定 |
| 英文关键词:sensor design non-contact displacement detection differential mutual sensing technology anti-interference static calibration |
| 基金项目:国家自然科学基金项目（青年项目） |
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