Gyro sensors, also known as angular rate sensors or angular velocity sensors, are devices that sense angular velocity.Gyro sensors
In simple terms, angular velocity is the change in rotational angle per unit of time. Angular velocity is generally expressed in deg/s (degrees per second). |
EPSON Gyro products
Gyro automotive
Gyro standard
Video: What is a Gyro?
Video: Motion of an object & Difference from accelerometer
Video: Epson Gyro Sensors Resistance to Impact
Video: XV7000 series for RVC、AGV
Gyro Sensor Types
Gyro sensors come in a variety of types. Here, different types are plotted by size and performance.
In recent years vibration gyro sensors have found their way into camera-shake detection systems for compact video and still cameras, motion sensing for video games, and vehicle electronic stability control (anti-skid) systems, among other things.
Moving forward, demand for vibration gyros is expected to grow in areas such as vehicle driver safety and support systems, and in robot motion control.
EPSON Gyro products
Gyro automotive
Gyro standard
Vibration Gyro Sensors
Vibration gyro sensors sense angular velocity from the Coriolis force applied to a vibrating element. For this reason, the accuracy with which angular velocity is measured differs significantly depending on element material and structural differences. Here, we briefly describe the main types of elements used in vibration gyro sensors.
Types of elements used in vibration gyro sensors
EPSON Gyro products
Gyro automotive
Gyro standard
How Angular Velocity Sensing Works (in Vibration Gyro Sensors)
Vibration gyro sensors sense angular velocity
from the Coriolis force applied to a vibrating object.
Here, we explain how this works, using as an example Epson 's double-T structure crystal element.
| 1. Normally, a drive arm vibrates in a certain direction. | 2. Direction of rotation | 3. When the gyro is rotated, the Coriolis force acts on the drive arms, producing vertical vibration. | |||
| 5. The motion of a pair of sensing arms produces a potential difference from which angular velocity is sensed. The angular velocity is converted to, and output as, an electrical signal. | 4. The stationary part bends due to vertical drive arm vibration, producing a sensing motion in the sensing arms. |
EPSON Gyro products
Gyro automotive
Gyro standard
Gyro Sensor Applications
There are three main applications for gyro sensors.
Interesting facts
Examples of angular velocity in applications:
• Car navigation systems: ~10 deg/s
• Vehicle control: ~30 deg/s
• Camera-shake correction: ~100 deg/s
• Game controllers: ~300 deg/s
• Sensing the swing of golf's top players: ~3,000 deg/s
EPSON Gyro products
Gyro automotive
Gyro standard
Sample applications
Gyro sensors are used in products all around us.
EPSON Gyro products
Gyro automotive
Gyro standard
Video: What is a Gyro？
Video: XV7000 series for RVC、AGV