论文部分内容阅读
在两只同轴电磁耦合线圈之间插入一只无源谐振线圈,可利用谐振耦合显著提高能量传输效率。为探索这种谐振增强效应在传感器领域的应用可能性,制作了一只与测量电路无任何引线连接的、由电感线圈及电容串联组成的无源LC谐振器,放置于电涡流位移传感器探测线圈与金属目标靶间的测量通道中。实验结果表明:当传感器工作在该谐振器的谐振频率点附近时,有效探测距离和灵敏度会得到显著增强。进一步针对发射-接收式双线圈位移检测系统进行了实验,结果同样证实了无源LC谐振器介入后的谐振增强作用。该结论对于其他带有电感耦合线圈的传感系统同样具有参考价值。
By inserting a passive resonant coil between two coaxial electromagnetic coupling coils, resonance coupling can be used to significantly improve energy transfer efficiency. In order to explore the application possibility of this resonance enhancement effect in the field of sensors, a passive LC resonator composed of an inductor coil and a capacitor in series with no lead connected to the measurement circuit was fabricated, and placed in an eddy current displacement sensor detection coil And the metal target in the measurement channel between the target. Experimental results show that when the sensor operates near the resonance frequency of the resonator, the effective detection range and sensitivity will be significantly enhanced. Further experiments were carried out on the transmitting-receiving dual coil displacement detection system. The results also confirmed the resonance enhancement effect of the passive LC resonator after the intervention. This conclusion is equally valuable for other sensing systems with inductively coupled coils.