公开(公告)号：US20160363462A1

公开(公告)日：2016-12-15

申请号：US14737403

申请日：2015-06-11

Applicant: Analog Devices Global

Inventor： Eoin E. ENGLISH ,  Javier CALPE MARAVILLA ,  Robert GUYOL ,  Alan J. O'DONNELL ,  Maria Jose MARTINEZ ,  Jan KUBIK ,  Krystian BALICKI

IPC: G01D5/20 ,  G01D5/26

CPC classification number: G01D5/20 ,  G01D5/145

Abstract: An embodiment of a position sensing system includes a signal generation circuit to generate an excitation signal according to a selected characteristic signal, a drive circuit to drive an excitation source with the excitation signal, an input circuit to receive a sensor output while driving the excitation source, a signal detection circuit to identify a component of the sensor output corresponding to the characteristic signal, and a control circuit to determine the position of the movable object as a function of the identified component of the sensor output. The positioning system may be included an electronic camera, where the movable object may be a lens. The excitation source may be a conductive coil, the excitation a magnetic field, and the sensor a magneto resistive sensor. Alternatively, the excitation source may be an optical excitation source, the excitation an optical excitation, and the sensor an optical sensor.

Abstract translation: 位置检测系统的一个实施例包括：信号产生电路，用于根据所选择的特征信号产生激励信号;驱动电路，用激励信号驱动激励源;输入电路，用于在驱动激励源时接收传感器输出; 信号检测电路，用于识别对应于特征信号的传感器输出的分量;以及控制电路，用于根据所识别的传感器输出的分量确定可移动物体的位置。 定位系统可以包括电子照相机，其中可移动物体可以是透镜。 励磁源可以是导电线圈，激励磁场，并且传感器是磁阻传感器。 或者，激发源可以是光学激发源，激发光学激发，并且传感器是光学传感器。