Li Wei, Yu Shuang, Zhang Hongpeng, Zhang Xingming, Bai Chenzhao, Shi Haotian, Xie Yucai, Wang Chengjie, Xu Zhiwei, Zeng Lin, Sun Yuqing
School of Marine Engineering, Dalian Maritime University, Dalian 116026, China.
School of Naval Architecture and Ocean Engineering, Harbin Institute of Technology, Weihai 264209, China.
Sensors (Basel). 2022 Apr 29;22(9):3406. doi: 10.3390/s22093406.
A method for analyzing the influence of velocity changes on metal signals of different materials in oil detection technology is proposed. The flow rate of metal contaminants in the oil will have a certain impact on the sensitivity of the output particle signal in terms of electromagnetic fields and circuits. The detection velocity is not only related to the sensitivity of the output particle signal, but also to the adaptability of high-speed and high-throughput in oil online monitoring. In this paper, based on a high-sensitivity inductive bridge, the eddy current effect of velocity in a time-harmonic magnetic field is theoretically analyzed and experimentally verified, the phenomenon of particle signal variation with velocity for different materials is analyzed and discussed, and finally the effect of velocity on the output signal of the processing circuit is also elaborated and experimentally verified. Experiments show that under the influence of the time-harmonic magnetic field, the increase of the velocity enhances the detection sensitivity of non-ferromagnetic metal particles and weakens the detection sensitivity of non-ferromagnetic particles. Under the influence of the processing circuit, different velocities will produce different signal gains, which will affect the stability of the signal at different velocities.
提出了一种在石油检测技术中分析速度变化对不同材料金属信号影响的方法。石油中金属污染物的流速在电磁场和电路方面会对输出粒子信号的灵敏度产生一定影响。检测速度不仅与输出粒子信号的灵敏度有关，还与石油在线监测中的高速和高通量适应性有关。本文基于高灵敏度感应电桥，从理论上分析并通过实验验证了时谐磁场中速度的涡流效应，分析并讨论了不同材料粒子信号随速度变化的现象，最后阐述并通过实验验证了速度对处理电路输出信号的影响。实验表明，在时谐磁场的影响下，速度的增加提高了非铁磁性金属粒子的检测灵敏度，降低了非铁磁性粒子的检测灵敏度。在处理电路的影响下，不同速度会产生不同的信号增益，这会影响不同速度下信号的稳定性。
