The document provides an overview of inertia movement sensors, particularly focusing on inertial measurement units (IMUs) that comprise accelerometers, gyroscopes, and magnetometers. It explains the functions of each component: accelerometers measure acceleration, gyroscopes track orientation and angular velocity, and magnetometers ascertain direction. IMUs are essential in various applications including aerial robotics and fitness tracking by assisting in measuring motion, speed, and position.

1. INERTIA
MOVEMENT
SENSORS
Prepared by Atheena Pandian
WEARABLE SYSTEM

2. Presentation
Outline
Keytopicsfordiscussion
What is Inertia movement
sensors?
Accelerometers
Gyroscopes
Magnetometers
IMU Axis
Uses
Application
1.
2.
3.
4.
5.
6.
7.

3. What is Inertia
movement
sensors?
Inertial sensors for aerial
robotics typically come in
the form of
an Inertial Measurement Unit
(IMU) which consists of
accelerometers, gyroscopes
and sometimes also
magnetometers.

4. What is
Accelerometer?
An accelerometer is an electromechanical
device used to measure acceleration forces.
Acceleration is the measurement of the
change in velocity, or speed divided by time.

5. What is
Gyroscopes?
Gyroscopes is a device used for measuring or
maintaining orientation and angular velocity.
The gyroscope, or gyro for short, adds an
additional dimension to the information
supplied by the accelerometer by tracking
rotation or twist.

6. What is
Magnetometers?
A magnetometer is a device that measures
magnetism—the direction, strength, or
relative change of a magnetic field at a
particular location.

7. Accelerometer - measures velocity and
Gyroscope - measures rotation and rotational
Magnetometer - establishes cardinal direction
1.
acceleration.
1.
rate.
1.
(directional heading)
Each tool in an IMU is used to
capture different data types:-

8. Didyouknow?
What is the use of IMU Sensor?
An inertial measurement unit (IMU) is
an electronic device that measures and
reports a body's specific force, angular
rate, and sometimes the orientation of
the body, using a combination of
accelerometers, gyroscopes, and
sometimes magnetometers.

9. An inertial measurement unit (IMU2) works by
detecting the current rate of acceleration, as
well as changes in rotational attributes.
This data is then fed into a controller, which
calculates the current speed and position, given
a known initial speed and position, by
integrating the accelerations.
Working of
IMU

10. Axis IMU
IMUs are composed of a 3-axis
accelerometer and a 3-axis gyroscope,
which would be considered a 6-axis IMU.
They can also include an additional 3-
axis magnetometer, which would be
considered a 9-axis IMU.

11. attitude
angular rates
linear velocity and
position relative to a global reference
frame.
IMUs are often incorporated
into Inertial Navigation Systems which
utilize the raw IMU measurements to
calculate
1.
2.
3.
4.
Fitness trackers and other wearables
may also include IMUs
to measure motion, such as running.
Applicatios of IMU Sensor

12. AtheenaPandian
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