Low-Power Gyro Sensor

Sept. 16, 2004
The 3DM-GX1 temperature-compensated gyro combines the outputs from three angular rate gyros with three orthogonal dc accelerometers and three orthogonal magnetometers.

The embedded microprocessor contains a unique programmable, complimentary filtering algorithm, which blends the static and dynamic outputs of the sensors to provide stabilized pitch, roll, and yaw measurements under dynamic and static conditions. Operating over the full 360 of angular motion on all three axes, the sensor provides orientation in matrix, quaternion and Euler angle formats. The digital serial output can also provide temperature-compensated, calibrated data from all nine orthogonal sensors at update rates of up to 350 Hz. Output modes and software filters are user programmable. Programmed parameters and calibration data are stored in nonvolatile memory. Embedded microcontrollers relieve the host system from the burden of orientation calculations, enabling networks of 3DM-GX1 nodes to be deployed by using a built-in RS-485 network protocol. There is full temperature compensation for bias and sensitivity of all nine sensors. Typical applications include: navigation and control of unmanned vehicles, platform stabilization, robotics, dynamic antenna pointing, and biomedical research.

MicroStrain Inc., 310 Hurricane Lane, Unit 4, Williston, VT 05495,
(802) 862-6629, www.microstrain.com

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