MTx 3DOF Orientation Tracker
The MTx is a small and accurate 3DOF Orientation Tracker. It provides drift-free 3D orientation as well as kinematic data: 3D acceleration, 3D rate of turn (rate gyro) and 3D earth-magnetic field. The MTx is an excellent measurement unit for orientation measurement of human body segments and other applications requiring very low profile and light-weight sensor units.
The standard version MTx has a full scale acceleration of 5g for human applications. Full scale of 1.7g is still available as well. Customers may chose a 1.7g range if they are sure that it will not be exceeded as it gives a higher resolution and slightly less noise.
Features
- accurate full 360 degrees 3D orientation output
- highly dynamic response combined with long-term stability (no drift)
- 3D acceleration, 3D rate of turn and 3D earth-magnetic field data
- all solid state miniature MEMS inertial sensors inside
- compact design
- high update rate
- accepts or generates synchronization pulses
- individually calibrated for temperature, 3D misalignment and sensor cross-sensitivity
Fields of use
- biomechanics
- exercise and sports
- virtual reality
- animation
The MTx uses 3 rate gyros to track rapidly changing orientations in 3D and it measures the directions of gravity and magnetic north to provide a stable reference. The systems real-time algorithm fuses the sensor information to calculate accurate 3D orientation, with a highly dynamic response and stable over time.
With the MTx Development Kit, the MTx can easily be integrated in any system or (OEM) application. Also available in Xbus Version, of which multiple units can be daisy-chained to the portable Xbus Master.
Specifications
Output
- 3D orientation (Quaternions/Matrix/Euler angles)
- 3D acceleration
- 3D rate-of-turn
- 3D earth-magnetic field (normalized)
- Temperature
Orientation performance
Dynamic Range: all angles in 3D
Angular Resolution ¹: 0.05 deg
Static Accuracy (Roll/Pitch): <0.5 deg
Static Accuracy ² (Heading): <1 deg
Dynamic Accuracy ³: 2 deg RMS
Sensor performance
|
rate of turn |
acceleration |
magnetic field |
temperature |
| Dimensions |
3 axes |
3 axes |
3 axes |
- |
| Full Scale (standard) |
± 1200 deg/s |
± 17 m/s² |
± 750 mGauss |
-55...+125 °C |
| Linearity |
0.1% of FS |
0.2% of FS |
0.2% of FS |
<1% of FS |
| Bias stability 4 (1σ) |
5 deg/s |
0.02 m/s² |
0.5 mGauss |
0.5 °C accuracy |
Scale Factor
stability 4 (1σ) |
- |
0.05% |
0.5% |
- |
| Noise density |
0.1 deg/s/√Hz |
0.001 m/s2/√Hz |
0.5 mGauss (1σ) |
- |
| Alignment error |
0.1 deg |
0.1 deg |
0.1 deg |
- |
| Bandwidth (standard) |
40 Hz |
30 Hz |
10 Hz |
- |
Interfacing
Max update rate: 512 Hz (calibrated sensor data),
120 Hz (orientation data)
Digital interface: RS-232 and USB (external converter) or "Xbus"
Operating voltage: 4.5 - 15V
Power consumption: 360 mW (orientation output)
Housing
Dimensions: 38x53x21 mm (WxLxH)
Weight: 30 g
Ambient temperature operating range: 0 - 55 ° Celsius
Options and Product Codes
(1) 1σ standard deviation of zero-mean angular random walk
(2) in homogenous magnetic environment
(3) may depend on type of motion
(4) deviation over operating temperature range (1σ)
Specifications subject to change without notice. |
