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    • 6. 发明申请
    • X-Y AXIS DUAL-MASS TUNING FORK GYROSCOPE WITH VERTICALLY INTEGRATED ELECTRONICS AND WAFER-SCALE HERMETIC PACKAGING
    • X-Y AXIS双质量调音枪具有垂直集成电子和水平放大包装
    • WO2005043079A3
    • 2005-08-11
    • PCT/US2004034431
    • 2004-10-12
    • INVENSENSE INC
    • NASIRI STEVEN SSEEGER JOSEPH
    • G01C19/00G01P9/04
    • G01C19/5712G01C19/5719H03H2009/02354
    • An angular velocity sensor has two masses (22,24) which are laterally disposed in an X-Y plane and indirectly connected to a frame (34). The two masses (22,24) are linked together by a linkage (28,56,58) such that they necessarily move in opposite directions along Z. Angular velocity of the sensor about the Y axis can be sensed by driving the two masses (22,24) into Z-directed antiphase oscillation and measuring the angular oscillation amplitude thereby imparted to the frame (34). In a preferred embodiment, the angular velocity sensor is fabricated from a bulk MEMS gyroscope wafer (20), a cap wafer (42) and a reference wafer (44). In a further preferred embodiment, this assembly of wafers provides a hermetic barrier between the masses (22,24) and an ambient environment.
    • 角速度传感器具有横向设置在X-Y平面中并间接连接到框架(34)的两个质量(22,24)。 两个质量块(22,24)通过连杆(28,56,58)连接在一起,使得它们必须沿着相反的方向移动。传感器绕Y轴的角速度可以通过驱动两个质量 22,24)转换成Z向反相振荡并测量由此赋予框架(34)的角振荡幅度。 在优选实施例中,角速度传感器由体MEMS陀螺仪晶片(20),盖晶片(42)和参考晶片(44)制成。 在另一优选实施例中,晶片组件提供了质量(22,24)和环境环境之间的密封屏障。