公开(公告)号：US20160084871A1

公开(公告)日：2016-03-24

申请号：US14698392

申请日：2015-04-28

Applicant: SAGATEK CO.,LTD.

Inventor： Kuei Ann WEN ,  Chia Feng CHANG

IPC: G01P15/105

CPC classification number: G01P15/097 ,  G01P15/125 ,  G01P2015/0814 ,  G01R33/0286

Abstract: Disclosed is a dual-functional resonant based magnetic field sensor that functions as magnetic field sensor and accelerometer, respectively, comprising a sensor structure including a mass block and motion sensor electrodes, capacitance to voltage converter and amplifier to convert sensing signals of the sensor electrodes into voltage, as output signals of the magnetic field sensor, a driving circuit to provide the output signals to the mass block in the form of current, to drive the mass block to vibrate, and a selection circuit to select measurement of magnetic field or acceleration. The driving circuit may be a comparator. The selection circuit may be replaced by a filter to select frequency bands of the output signals of the converter, for simultaneously providing signals representing magnetic field and acceleration, respectively.

Abstract translation: 公开了一种基于双功能谐振的磁场传感器，其分别用作磁场传感器和加速度计，其包括传感器结构，其包括质量块和运动传感器电极，电容到电压转换器和放大器，以将传感器电极的感测信号转换成 电压作为磁场传感器的输出信号，以电流形式向质量块提供输出信号的驱动电路，以驱动质量块振动，以及选择电路以选择磁场或加速度的测量。 驱动电路可以是比较器。 选择电路可以由滤波器代替以选择转换器的输出信号的频带，以分别同时提供表示磁场和加速度的信号。