一种新型线性位置感测器的研制
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摘要
为准确检测移动物体的线性位置,采用新型数字式、非接触电感传感器LDC1000,前端有分布不均匀的矩形自制电感线圈,形成LC振荡电路。当金属物沿着矩形线圈移动时,由于互感作用产生电涡流,涡流对自制线圈的振荡产生反作用,引起自制电感线圈振荡频率变化,LDC1000将其转换为高达28位的数字量输出。由于线圈不对称,在不同的位置将会产生不同的输出,以此来测试金属物的线性位移。实验结果表明:该设计可准确地测量金属物体的直线位移,精度高达0. 3 mm。
In order to accurately detect the linear position of the target,a new non-contact inductance sensor LDC1000 was adopted. The front end had a rectangular self-made inductor coil with uneven distribution to form LC oscillation circuit. When the metal objects moved along the rectangular coil,eddy current was generated due to mutual inductance,and the eddy current reacted on the oscillation of the homemade coil,causing the variation of oscillation frequency of the homemade inductor coil. The LDC1000 converted it to 28 bits digital output code. Because the coil was not symmetric,different outputs can be generated at different locations to test the linear displacement of metal objects. The test results show that the design can accurately measure the linear position of the metal target. The measurement accurately can reach up to 0. 03 mm.
In order to accurately detect the linear position of the target,a new non-contact inductance sensor LDC1000 was adopted. The front end had a rectangular self-made inductor coil with uneven distribution to form LC oscillation circuit. When the metal objects moved along the rectangular coil,eddy current was generated due to mutual inductance,and the eddy current reacted on the oscillation of the homemade coil,causing the variation of oscillation frequency of the homemade inductor coil. The LDC1000 converted it to 28 bits digital output code. Because the coil was not symmetric,different outputs can be generated at different locations to test the linear displacement of metal objects. The test results show that the design can accurately measure the linear position of the metal target. The measurement accurately can reach up to 0. 03 mm.
引文
[1]黄健.一种新型数字电感传感器的设计与应用[J].计算机测量与控制,2015,23(7):2597-2599
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[3]黄健,张善文.基于LDC1614的精密刻度盘设计[J].深圳大学学报(理工版),2017,34(2):188-194
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[15]郭玉,李彦梅,王鹏.基于电涡流传感器的硬币辨伪系统的设计[J].传感技术学报,2012,25(4):557-560.
[2]黄健.基于ARM的数字电感传感器设计[J].宇航计测技术,2015,35(5):57-60
[3]黄健,张善文.基于LDC1614的精密刻度盘设计[J].深圳大学学报(理工版),2017,34(2):188-194
[4]司开波,黄健,吕林涛.多通道数字电感传感器设计[J].宇航计测技术,2016,36(1):62-68
[5]陈治,朱洪程,胡晓东,等.基于相位相关技术的MEMS旋转角度高分辨力测量[J].光学精密工程,2009,17(8):1884-1888
[6]周武,胡跃明,刘屿.基于投影和重采样技术的目标旋转角度测量方法[J].光学技术,2010,36(6):860-865.
[7]陈玉娇,王晓蕊,于硕.旋转角度装配误差对成像质量影响的定量分析[J].西安电子科技大学学报(自然科学版),2014,41(3):145-151.
[8]胡晓东,李晓俊,孙彬,等. MEMS微结构旋转角度的快速测量方法[J].纳米技术与精密工程,2009,7(4):328-332.
[9]钟金钢,梁智强,李仕萍.激光自混合干涉角度测量参数优化及旋转方向判别[J].光学精密工程,2016,24(5):1001-1008.
[10]罗元,聂俊齐,张毅.基于Fourier-Mellin变换和相位相关的MEMS旋转角度的测量[J].半导体光电,2013,34(2):346-350.
[11]宋永献,马娟丽,贺乃宝,等.基于TMS320F2812的智能循迹小车控制系统设计[J].计算机测量与控制,2011,19(9):2128-2130.
[12]李艳红,李自成,孙仕琪.基于STM32单片机的金属物体探测定位器系统的设计与实现[J].仪表技术与传感器,2016(4):63-66.
[13]王丽君,马龙升,钟皇平,等.可自主移动的金属物体探测定位仪设计及开发[J].实验技术与管理,2015,32(5):107-110.
[14] Texas Instruments. LDC1612 Multi-Channel 28-Bit Inductance to Digital Converter(LDC)for Inductive Sensing[M].上海,2014,12.
[15]郭玉,李彦梅,王鹏.基于电涡流传感器的硬币辨伪系统的设计[J].传感技术学报,2012,25(4):557-560.