Designs of Eddy Current Sensor Probes Based on Multilayer Printed Circuit Board Technology

摘要：

　　Probe characteristics are important for eddy current displacement sensors.Probes made by multilayer printed circuit board (PCB) are good at maintaining quality consistency and their axial length was short.As design principles for wired probes were not suitable for PCB probes, an analysis and design method for them was developed.In this paper, PCB probe characteristics were first analyzed with 3D eddy current field FEM software.The process was time-consuming.To increase analysis efficiency, a simplified 2D axial symmetry model was used to replace the 3D model.The analysis results were compared and their difference was small.The probe resister and inductance were compared with measurement result of a test PCB probe and they agreed well.Based on 2D model, a series of analysis was performed and basic design principles for PCB probes were obtained.Based on the principles, a new PCB probe with better performance was designed.

关键词： Eddy current sensor FEM PCB

作者: Zhang Kai Dai Xing-jian Zhang Xiao-zhang

作者单位: Department of Engineering Physics,Tsinghua University,Beijing 100084,China

会议类型: 国际会议

会议名称: the 3nd International Conference on Digital Manufacturing & Automation (第三届数字制造与自动化国际会议(ICDMA 2012))

会议地点: 桂林

会议语种:英文

页码: 801-805

在线出版日期: 2012-08-01（万方平台首次上网日期，不代表论文的发表时间）