摘要
为解决水下自动机运动参数测量过程中现有测速传感器内部铁心线圈产生涡流影响测量精度的问题,提出一种基于电磁感应原理的永磁型感应测速传感器的结构优化方法。以环氧树脂板代替传统传感器的金属铁芯,在其上用漆包线紧密缠绕一层线圈作为速度线圈,在速度线圈表面利用丝包线等间距正反多圈间绕而成位移线圈,并且在速度线圈与环氧树脂板之间加入一层坡莫合金片,保证线圈铁芯的高导磁率,提高传感器的灵敏度;同时设计了信号调理电路,并将其封装在传感器内部。经过试验验证:改进后的传感器灵敏度更高,动态特性更好,测试信号更精确,能更真实地反映自动机的运动规律。
In order to solve problem that during measurement of motion parameters of automata underwater,core coil will affect measurement precision by generating eddy currents,propose a new method to improve structure of permanent-magnet induction velocity measurement sensor based on electromagnetic induction. The iron core is replaced by epoxy resin board,this sensor is tightly wrapped a layer of coil as speed coil,multi-turn winded with equal interval between positive and negative by silk envelope wire is taken as displacement coil on the surface of the speed coil; besides permalloy stands between speed coil and epoxy resin board to ensure the high-permeability of coil core,and increase sensitivity of the sensor; signal conditioning circuit is designed and encapsulated within the sensor. After experimental verification,the sensitivity of the improved sensor is higher and dynamic characteristics is better,the test signal is more accurate,reflect movement rule of automata more truly.
出处
《传感器与微系统》
CSCD
2015年第11期72-74,81,共4页
Transducer and Microsystem Technologies
关键词
自动机
运动参数
电磁感应
灵敏度
automata
motion parameters
electromagnetic induction
sensitivity
