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Method and device for obtaining angular velocity of gyro sensor

A technology for obtaining device and angular velocity, which is applied in the direction of gyro effect for velocity measurement, gyroscope/steering sensing equipment, instruments, etc., which can solve problems such as increased power consumption

Active Publication Date: 2019-09-20
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, in conventional gyro sensors, forced vibration is continuously applied to the movable body
Therefore, there is a problem that power consumption becomes large

Method used

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  • Method and device for obtaining angular velocity of gyro sensor
  • Method and device for obtaining angular velocity of gyro sensor
  • Method and device for obtaining angular velocity of gyro sensor

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Embodiment Construction

[0037] According to one embodiment, it is a method of acquiring an angular velocity of a gyro sensor, comprising the step of detecting a vibration in a second direction based on a Coriolis force acting on a movable body vibrating in a first direction. A predetermined physical quantity of amplitude; the angular velocity of the movable body is calculated based on the detected predetermined physical quantity detected when the vibration in the second direction by the Coriolis force is in an unsteady state.

[0038] Embodiments will be described below with reference to the drawings.

[0039] Figure 1A is a plan view schematically showing the structure of the gyro sensor according to the embodiment. The gyro sensor is formed using MEMS technology.

[0040] Figure 1A The shown gyro sensor 10 includes a y-direction movable part 11y and an x-direction movable part 11x as a movable body (movable part) 11 . The y-direction movable portion 11y constitutes a y-direction mass of the mov...

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PUM

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Abstract

According to one embodiment, a method of acquiring rotational information of a gyro sensor includes sensing a predetermined physical quantity which depends upon an amplitude of a vibration in a second direction, the vibration in the second direction being based on Coriolis force that is applied to a movable body which is vibrating in a first direction, calculating rotational information of the movable body based on the sensed predetermined physical quantity, and stopping a vibration in the first direction of the movable body after the predetermined physical quantity is sensed.

Description

[0001] Cross References to Related Applications [0002] This application claims priority based on Japanese Patent Application No. 2015-081227 filed on April 10, 2015, the entire content of which is incorporated herein. technical field [0003] Embodiments of the present invention relate to an acquisition method and an acquisition device of an angular velocity of a gyro sensor. Background technique [0004] In a gyro sensor formed using MEMS (micro electro-mechanical systems) technology, based on the amplitude of the vibration based on the Coriolis force (Coriolis force) acting on the movable body in vibration, the angular velocity. [0005] However, in conventional gyro sensors, forced vibration is continuously applied to the movable body. Therefore, there is a problem that power consumption becomes large. Contents of the invention [0006] Embodiments relate to an acquisition method and an acquisition device of an angular velocity of a gyro sensor capable of reliable ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C19/5621
Inventor 池桥民雄
Owner KK TOSHIBA