3DM-GX2 gyro enhanced orientation sensor

MicroStrain's inertial, orientation and inclinometer product line includes simple inclinometers, commonly referred to as tiltmeters or clinometers, inertial measurement units (IMU) and attitude heading reference systems (AHRS) - With or without GPS-Receiver. These products can provide single axis or dual axis inclination, linear acceleration and angular rate, or orientation in the form of pitch, roll and heading (yaw or azimuth) Quaternion or orientation matrix.

UPDATE:

There is a typo in the 3DM-GX-series data sheets regarding the Gyro Bias stability. 

It should read: Gyro Bias Instability: +/-0.01°/sec

3DM-GX2® is a high-performance gyro enhanced orientation sensor which utilizes miniature MEMS sensor technology. It combines a triaxial accelerometer, triaxial gyro, triaxial magnetometer, temperature sensors, and an on-board processor running a sophisticated sensor fusion algorithm.

3DM-GX2® offers a range of output data quantities from fully calibrated inertial measurements (acceleration, angular rate and magnetic field or deltaAngle & deltaVelocity vectors) to computed orientation estimates (pitch & roll or rotation matrix). All quantities are fully temperature compensated and corrected for sensor misalignment. The angular rate quantities are further corrected for G-sensitivity and scale factor non-linearity to third order.

3DM-GX2®'s communications interface hardware is contained in a separable module, and can therefore be easily customized. Currently available interface modules include a wireless transceiver, USB 2.0, RS232 and RS422. An OEM version is available without the communications interface enabling the sensor to be integrated directly into a host system's circuitboard, providing a very compact sensing solution.

The system architecture has been carefully designed to substantially eliminate common sources of error such as hysteresis induced by temperature changes and sensitivity to supply voltage variations. The use of six independent Delta-Sigma A/D converters (one for each sensor) ensures that all sensors are sampled simultaneously, and that the best possible time integration results are achieved. On-board coning and sculling compensation allows for use of lower data output rates while maintaining performance of a fast internal sampling rate. 3DM-GX2® incorporates an integral triaxial magnetometer; optionally, the magnetometer can be located remotely to reduce hard and soft iron interference.

Applications

Inertial aiding INS and GPS, location tracking

Unmanned vehicles, robotics - navigation, artificial horizon

Computer science, biomedical - animation, linkage free tracking/control

Platform stabilization

Antenna and camera pointing
 

Features and Benefits

• Small, light-weight, low-power design ideal for size-sensitive applications including wearable devices
• Fully temperature compensated over entire operational range
• Calibrated for sensor misalignment, gyro G-sensitivity, and gyro scale factor non-linearity
• Simultaneous sampling for improved time integration performance
• Available with wireless and USB communication interfaces
• User adjustable data rate (1 to 250Hz) and sensor bandwith(1 to 100Hz)
• Outputs include Euler angles, rotation matrix, deltaAngle & deltaVelocity, acceleration and angular rate vectors