公开(公告)号：US20160334244A1

公开(公告)日：2016-11-17

申请号：US15110167

申请日：2015-01-20

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuma HARAGUCHI ,  Yoshihiko SUGIMOTO ,  Masahisa NIWA

IPC: G01D5/22

CPC classification number: G01D5/22 ,  G01D5/2258

Abstract: A position sensor includes a first transmission coil, a second transmission coil having a different shape from the first transmission coil, a receiver coil for receiving electromagnetic waves transmitted from the first and second transmission coils, a transmission waveform generator that inputs first and second input waves to the first and second transmission coils having frequencies identical to each other and having phases different from each other, and a position detector that detects a position of a target provided movably with respect to the first transmission coil, the second transmission coil, and the receiver coil based on a first output signal obtained from the receiver coil in response to the first and second input waves input from the transmission waveform generator to the first and second transmission coils, respectively. The position detector is configured to detect the position of the target based on values obtained by sampling the first output signal obtained from the receiver coil at least two times at a sampling period different from an integer multiple of a half of a period of the first input wave and the second input wave. This position sensor can simplify circuitry.

Abstract translation: 位置传感器包括第一传输线圈，具有与第一传输线圈不同形状的第二传输线圈，用于接收从第一和第二传输线圈传输的电磁波的接收线圈，输入第一和第二输入波的传输波形发生器 涉及具有彼此相同且相位不同的频率的第一和第二传输线圈，以及位置检测器，其检测相对于第一传输线圈，第二传输线圈和接收器可移动地设置的目标的位置 基于从接收器线圈获得的响应于从发送波形发生器输入到第一和第二发送线圈的第一和第二输入波的第一输出信号的线圈。 位置检测器被配置为基于通过对从接收器线圈获得的第一输​​出信号进行采样获得的值来检测目标的位置，所述值在与第一输入的周期的一半的整数倍不同的采样周期下至少两次 波和第二输入波。 该位置传感器可以简化电路。