Ellipse2-A: Miniature AHRS
Ellipse2-A is a small-sized high performance Attitude and Heading Reference System (AHRS). It provides Roll, Pitch, Heading, and Heave data.
This light-weight sensor (45 grams) includes a MEMS-based Inertial Measurement Unit (IMU) integrating three gyroscopes, three magnetometers, and three accelerometers. Running an extended Kalman filter (EKF), the Ellipse-A provides accurate orientation data in both static and dynamic conditions.
High Accuracy for Such a Small Sensor:
- 0.1° Roll and Pitch over 360°
- 1° Heading (Internal Magnetometers)
- 5 cm Real-time Heave, adjusted to the wave period
- Very Low Noise Gyroscopes
- IP 68 Enclosure
- 200 Hz Output Rate
- RS-232, RS-422, and CAN Interfaces
- Binary, NMEA, ASCII, and TSS Protocols
- 2 years warranty
Highly Rugged to Vibrations and Magnetic Disturbances
Vibrations: Internal FIR filters coupled with Coning & Sculling integrals to provide efficient vibration rejection.
Calibration: Intensively tested and calibrated from -40 to 85°C for consistent data in all conditions (the Calibration Report is shipped with the sensor).
Iron Disturbances: Ellipse sensors are highly rugged to magnetic disturbances. To go even further, a magnetic calibration tool is embedded in the inertial sensor. It allows quick in-field soft and hard magnetic disturbances compensation.