公开(公告)号：US20150176992A1

公开(公告)日：2015-06-25

申请号：US14552891

申请日：2014-11-25

Applicant: EM Microelectronic-Marin SA

Inventor： Christophe ENTRINGER ,  Alexandre DESCHILDRE ,  Sylvain GROSJEAN

IPC: G01C19/567

CPC classification number: G01C19/567 ,  G01C19/5776

Abstract: The electronic circuit measures angular speed in a gyroscope, which includes a mass connected to a spring and a damping element, an actuation capacitor for actuating the mass and a detection capacitor for detecting motion of the mass. The electronic circuit includes a measurement resistor, which is connected to the moving mass and has a variation in resistive value equal to the oscillation frequency of the mass. The resistor is polarized to supply a measurement signal, which includes a carrier signal in phase with the oscillation of the mass and an angular speed signal phase shifted by π/2 relative to the carrier signal The measurement signal is supplied to an integration unit clocked by a clocking signal phase shifted by π/2 relative to the carrier signal and originating from the drive circuit. The angular speed signal is demodulated at the integration unit output.

Abstract translation: 电子电路测量陀螺仪中的角速度，其包括连接到弹簧和阻尼元件的质量，用于致动质量的致动电容器和用于检测质量块的运动的检测电容器。 电子电路包括测量电阻，其连接到移动质量块，并具有等于质量的振荡频率的电阻值的变化。 电阻器被极化以提供测量信号，其包括与质量的振荡同相的载波信号和相对于载波信号移位＆pgr / / 2的角速度信号相位。测量信号被提供给具有时钟 通过相对于载波信号移位并且来自驱动电路的时钟信号相位移位＆pgr; / 2。 角速度信号在积分单元输出处被解调。