Gyro Sensors

Notes for using technical information
Zoom
Compact Gyro Sensors which adopted MEMS tuning fork type element and bare chip ASIC.
High reliability by SMD type hermetic sealing package.
A self-diagnostic function is built in and it is adapted for the fail-safe of a system.

Topics

Principle of Gyro Sensors ①

  • What is the angular rate?
    What is the angular rate?
  • Output characteristics of gyro sensors
    Output characteristics of gyro sensors

Principle of Gyro Sensors ②

Utilizes the Coriolis force acting in a direction perpendicular to the vibration when the angular rate ω is added to mass m vibrating at a speed of V.

Coriolis force

The Coriolis force is perpendicular to the direction of the reciprocating movement of the pendulum, and is maximized at the maximum speed point.

The Coriolis force is perpendicular to the direction of the reciprocating movement of the pendulum, and is maximized at the maximum speed point.

Principle of operation (tuning fork)

The gyro sensor is achieved if two perpendicular vibration modes can be driven and detected in an electrically independent manner.
下向き矢印
Thepiezoelectric effectis used as a drive/detection method.

The gyro sensor is achieved if two perpendicular vibration modes can be driven and detected in an electrically independent manner. image4image5

↑Page top

Application of Gyro Sensors

Electronic Stability Control (ESC)


Electronic Stability Control (ESC)2
Electronic Stability Control (ESC)3

A system that significantly enhances safety while traveling by detecting the turning speed of the vehicle with the gyro sensor to prevent spinning (sideways slip) of the vehicle

Rollover air bag

The gyro sensor detects the overturn speed of the vehicle.
The computer then determines the state and deploys the curtain airbag.

Rollover air bag
Rollover air bagRollover air bag

↑Page top