3DM-GX1 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-GX1™ combines three angular rate gyros with three orthogonal DC accelerometers, three orthogonal magnetometers, multiplexer, 16 bit A/D converter, and embedded microcontroller, to output its orientation in dynamic and static environments.

Operating over the full 360 degrees of angular motion on all three axes, 3DM-GX1™ provides orientation in matrix, quaternion and Euler formats. The digital serial output can also provide temperature compensated, calibrated data from all nine orthogonal sensors at update rates of 350 Hz.

Networks of 3DM-GX1™ nodes can be deployed by using the built-in RS-485 network protocol. Embedded microcontrollers relieve the host system from the burden of orientation calculations, allowing deployment of dozens of 3DM-GX1™ nodes with no significant decrease in system throughput.

Output modes and software filter parameters are user programmable. Programmed parameters and calibration data are stored in nonvolatile memory.

How It Works
3DM-GX1™ utilizes the triaxial gyros to track dynamic orientation and the triaxial DC accelerometers along with the triaxial magnetometers to track static orientation. The embedded microprocessor contains a unique programmable filter algorithm, which blends these static and dynamic responses in real-time.

This provides a fast response in the face of vibration and quick movements, while eliminating drift. The stabilized output is provided in an easy to use digital format. Analog output voltages proportional to the Euler angles can be ordered as an option.

Full temperature compensation is provided for all nine orthogonal sensors to insure performance over a wide operating temperature range.
 

Applications
Unmanned Aerial/Underwater Vehicles
navigation, artificial horizon

Computer Science, Biomedical
animation, linkage free tracking/control

Mobile Cameras, Sonar Scanners
image reconstruction

Mobile Radio Antennas
aiming optimization, dynamic correction, antenna shaping

Manufacturing
container handling, hydraulic lift systems, machine tools

Comprehensive Calibration

• Robotic Calibration Performed on all Modules
• Software Compensation for Bias and Sensitivity for all 9 Sensors over the Full Temperature Range
• Software Correction for Sensor Misalignment
• Software Correction for Gyro G-sensitivity
• Hard and Soft Iron Field Calibration
• Complete Calibration Document Shipped with Every Order

Features and Benefits

• On-board processing/filtering of accelerometer, gyro and magnetometer outputs
• Fully temperature compensated
• Calibrated for sensor misalignment and gyro G-sensitivity
• Supports hard iron field calibration
• Outputs Euler angles, quaternions and orientation matrix
• RS-232, RS-485 and analog output options
• Small, lightweight and low power

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