Cảm Biến Gyro

 - 

Gyro sensors

Gyro sensors, also known as angular rate sensors or angular velođô thị sensors, are devices that sense angular velocity.

Bạn đang xem: Cảm biến gyro


*
Sensing devices that effectively augment human motion " width="445" height="190">


Angular velocity
*
In simple terms, angular velocity is the change in rotational angle per unit of time.Angular velođô thị is generally expressed in deg/s (degrees per second).

EPSON Gyro products Gyro automotive Gyro standard Video: XV7000 series for RVC、AGV

Gyro Sensor Types

Gyro sensors come in a variety of types. Here, different types are plotted by size & performance.

*
*

In recent years vibration gyro sensors have found their way into camera-shake detection systems for compact Clip and still cameras, motion sensing for video games, và vehicle electronic stability control (anti-skid) systems, amuốn other things.


*

Moving forward, dem& for vibration gyros is expected to lớn grow in areas such as vehicle driver safety và support systems, and in robot motion control.


EPSON Gyro productsGyro automotive sầu Gyro standard

Vibration Gyro Sensors

Vibration gyro sensors sense angular velothành phố from the Coriolis force applied to lớn 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


Vibration gyro sensor manufacturers are using a variety of materials and structures in an effort khổng lồ devise compact, high-accuracy gyro sensors that have good characteristics, including: • scale factor • temperature-frequency coefficient • compact kích cỡ • shock resistance • stability • noise characteristics

Material Sample Structure
Piezoelectric transducer
*
*
*
*
Ceramic
*
*
Silibé transducer Silicon Si MEMSNOTE: Every company uses a different structure.

Xem thêm:


EPSON Gyro products Gyro automotive sầu Gyro standard

How Angular Velođô thị Sensing Works (in Vibration Gyro Sensors)

Vibration gyro sensors sense angular velođô thị from the Coriolis force applied lớn a vibrating object. Here, we explain how this works, using as an example Epson "s double-T structure crystal element.

*
*
*
*
1. Normally, a drive sầu 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 velothành phố is sensed. The angular velocity is converted to, and output as, an electrical signal. 4. The stationary part bends due to lớn vertical drive sầu arm vibration, producing a sensing motion in the sensing arms.

EPSON Gyro productsGyro automotive sầu Gyro standard

Gyro Sensor Applications

There are three main applications for gyro sensors.


Angular velocity sensing
Sense the amount of angular velocity produced. Used in measuring the amount of motion itself. Ex.) Checking athletic movement

Angle sensing
Senses angular velothành phố produced by the sensor"s own movement. Angles are detected via integration operations by a CPU. The angle moved is fed lớn và reflected in an application. Ex.) Car navigation systemsGame controllersCellular

Control mechanisms
Senses vibration produced by external factors, và transmits vibration data as electrical signals lớn a CPU. Used in correcting the orientation or balance of an object. Ex.) Camera-shake correctionVehicle control

*

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