Inertial unit employs Colibrys MEMS, with inbuilt Kalman filtering

April 10, 2015 // By Graham Prophet
OxTS (Oxford, UK) and Colibrys (Yverdon-les-Bains, Switzerland) have collaborated to produce the xOEMcore IMU/INS (inertial measurement unit/inertial navigation system), integrating high-grade MEMS sensors in a small board set package.

“The inertial sensors we selected from Colibrys were ideal for us because of their long term bias stability and high reliability... to build a compact IMU without sacrificing the performance that OxTS is known for” said Mr. Iain Clarke, Product Manager.

The xOEMcore is the first standalone IMU on offer from OxTS, although custom built systems have been a major part of existing products such as the xNAV series. The xOEMcore is no ordinary IMU, the companies assert; in addition to containing 6-axis gyros and accelerometers on a miniature OEM board set, the small IMU block also houses an on-board processor running the Kalman filter. This means users can get the raw IMU measurements as with a standard IMU, or they can pair it with an external aiding device such as GNSS receivers and the xOEMcore will take care of the sensor fusion.

Colibrys precision MEMS inertial sensors are suitable solutions for Inertial Measurement Unit (IMU) and Attitude and Heading Reference Systems (AHRS) in the air, on land, on the sea and undersea, offering the specifications such as short term and long term stability, the reliability and the capability to work within specification under harsh environments. “Successful qualification of Colibrys ME MS accelerometer (M9000.D product family) by OxTS reinforces once again our recognition as a world leading of cost effective and high performance accelerometer supplier for inertial applications” said Mr. Patrick Gougeon, Colibrys CEO.

Colibrys is a supplier of standard and semi-custom MEMS based motion sensors to the harsh-environments (Military, Aerospace and Energy) and safety critical (Industrial and Instrumentation)

applications. Colibrys’ family of motion sensors include extremely low noise, shock resistant seismic sensors, high stability shock tolerant inertial and shock accelerometers tilt sensors as well as DC coupled capacitive vibration sensors;

OxTS designs and manufactures products combining Inertial Navigation and GPS/GNSS, focussing on on low-cost INS using MEMS gyros and precision accelerometers, with Kalman filtering to extract the maximum