I3M

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i3m
The Inertial Measurement & Magnetometer Module (I3M) is one of the smallest, most accurate microelectromechanical systems (MEMS) in the world and is Cybernet’s continued development of miniaturization of MEMS-based Inertial measurement instrumentation.

The Inertial Measurement & Magnetometer Module (I3M) is a product of Cybernet’s continued development and miniaturization of Micro-Electro Mechanical System (MEMS) based inertial measurement instrumentation. It is among the smallest and most accurate MEMS inertial measurement units in the world, providing fast dynamic response and drift-free, absolute pointing data to better than 0.1 milliradian in pitch, roll and yaw — both in and outdoors.

Improvements to the I3M product line are ongoing as part of an effort to provide the Army with a field-proven way of training non-line-of-sight weapon systems, such as the M109A6 SP Paladin, M119A2 105 mm Towed Howitzer, and MK-19 Grenade Machine Gun, in the live training environment.  The current training system, Multiple Integrated Laser Engagement System (MILES), uses lasers which cannot be used to train non-line-of-sight weapons.

Cybernet is exploring using a dynamic calibration routine that utilizes the spherical relationship between the accelerometers and magnetometers to improve the heading accuracy, as well as creating virtual sensors from the one data stream and using probability theory to reduce the error of the output data.  The goal is to produce a design for a position orientation sensor which is low power, can be attached to a Soldier’s weapon, and is capable of determining absolute heading.

I3M Features Include:

  • Full 6 Degrees of Freedom measurements plus 3 Axis magnetic sensing.
  • Better than 1 milliradian pointing accuracy (+/- 1m error at 1000 meters) when using Cybernet-supplied calibration C++ software API.
  • 16-bit analog to digital conversion of 3 Axis of Acceleration, Rotation, and Earth’s Magnetic Field sensing.
  • RS232 interface (115 kbaud) and digital control inputs for maximum flexibility
  • Sampling rates and sensor selection of up to 100 sps.
  • On board temperature sensing for calibration over temperature.
  • Packaged and OEM versions.
  • Current draw of only 186mA.
  • Dimensions:
    • 3.0 in. Length (plug +.25 in.)
    • 1.25 in. Width - 0.6875 in. Height
    • 1.3 oz. Weight

Applications:

  • Attitude Estimation
  • Ground Vehicle Navigation
  • Military
  • Marine
  • Industrial

 

I3M RESOURCES