a brief information about accelerometer & gyroscope

2. What ?
Where ?
Application?
Types?
How ?

8. Simple Application to
Gaming:
• Aim: To control paddle via
accelerometer
• Accelerometer serves as a
wireless joystick

12. GYROSCOPE

13. Topics to be discussed
• What ?
• Uses ?
• Application ?
• Types?

14. 14
What is a Gyroscope?
• Device used to measure or maintain orientation
• Works on the principals of angular momentum
• Initial axis of rotation is conserved
• Consists of a spinning mass on an axel

15. 15
Common Uses
Gyrocompass
• Used by ships to find true north
• Seeks minimum potential energy
Stability Assistance
• Hubble Space Telescope
• Bicycles
Inertial Guidance System
• Guided Missiles
• Measure angular velocity in inertial reference frame
• Detect changes to orientation
• Combined with accelerometer for 6 axis sensor

16. Practical application
• A gyroscope is a device
that contain a disc
rotating on an axis that
can turn freely in any
direction ,so that the
disc maintain the same
position .
• This device can greatly
improve the stability of
the helicopter

17. Types of Gyroscopes
• Rotary gyroscope
– Rotor suspended in a gambol spins independently in
order to conserve angular momentum
– Mostly unused in modern systems
• Fiber optic gyroscope (FOG)
– Fiber optic coil determines changes in orientation by
path of light in the coil
– Beam traveling against rotation has slightly shorter
path
• Microelectromechanical systems (MEMS)
– Uses very small vibrating mechanism to detect changes

18. • Consumer Electronics
• Wii Remote
• Tilt, yaw, pitch
• Rate of angular movement
• Smart Phones
• Gaming Input
• Screen Orientation
• Laptops
• Free fall detection
18

19. Gyro Sensor Applications
Used in measuring the
amount of motion itself.
Ex.) Checking athletic
movement
Sense the amount of
angular velocity
produced.
Senses angular
velocity produced by
the sensor's own
movement. Angles are
detected via integration
operations by a CPU.
The angle moved is fed to and
reflected in an application.
Ex.) Car navigation systems
Game controllers
Cellular