An inertial measurement unit also known as imu is an electronic device that measures and reports acceleration orientation angular rates and other gravitational forces. Honeywell is a leading producer of precision inertial measurement units imus which are currently used by many of the leading aerospace companies globally.
Jmu Feature Free Activity Classification Of Inertial Sensor
Inertial measurement units body. Imus are typically used to maneuver aircraft an attitude and heading reference system including unmanned aerial vehicles uavs among many others and spacecraft including satellites and landers. Lets take for example cars autonomous vehicles smartwatches mobile phones etc. An inertial measurement unit imu is an electronic device that measures and reports a bodys specific force angular rate and sometimes the orientation of the body using a combination of accelerometers gyroscopes and sometimes magnetometers. It is composed of 3 accelerometers 3 gyroscopes and depending on the heading requirement 3 magnetometers. Inertial measurement units imu analog devices inertial measurement unit imu sensors are based on multiaxis combinations of precision gyroscopes accelerometers magnetometers and pressure sensors. Our technology reliably senses and processes multiple degrees of freedom even in highly complex applications and under dynamic conditions.
When a body is free to rotate around an axis torque must be applied to change its angular momentumthe amount of torque needed to cause any given angular acceleration the rate of change in angular velocity is proportional to the moment of inertia of the bodymoment of inertia may be expressed in units of kilogram metre squared kgm 2 in si units and pound foot second. In particular inertial measurement units imu showed an increasing role in human movement assessment allowing the measurement of a number of movement related parameters outside of instrumented laboratories. Ln 200s inertial measurement unit the ln 200s is a small lightweight highly reliable state of the art fiber optic inertial measurement unit imu. Inertial motion capture uses imus inertial measurement units with built in sensors to detect position and movement. We use cookies to improve website performance facilitate information sharing on social media and offer advertising tailored to your interests. These typically include gyroscopes accelerometers and sometimes magnetometers.
The purpose of this study was to validate a commercially available inertial measurement unit imu system against a standard lab based motion capture system for the measurement of shoulder elevation elbow flexion trunk flexionextension and neck flexionextension kinematics. One common utility present in the above mentioned ones is the global positioning system gps which. Therefore the more cameras the better since body parts can block or shadow other markers during movement. The ln 200s inertial fiber optic gyro for space applications offers outstanding accelgyro bias and random walk performance.
Gallery of Inertial Measurement Units Body
