Ellipse 2-A Inertial Sensor (IMU)

Ellipse 2-A Inertial Sensor: IMU + AHRS

The Ellipse 2-A Inertial Sensor is part of the SBG Systems Ellipse 2 series. The tiny module is less than 5 cm long and includes:

• High-performance, very low-noise 3-axis MEMS gyroscopes
• 3-axis accelerometers equipped with internal FIR anti-vibration filters
• 3-axis magnetometers and temperature sensors
• An integrated AHRS for calculating pitch, roll, heading and heave
• All connected to a processor for data calibration, coning and sculling

The serial CAN interface allows easy inclusion in automation applications using RS-232, RS-422 and CAN 2.0 protocols.

A variety of uses thanks to the Ellipse 2 Development Kit

Your sensor comes with an SBG Systems Development Kit, which will provide inventors, developers of automated solutions and researchers with a complete set of solutions for autonomous robot navigation on land, air and water:

• Material: quick start and user guides, calibration report, USB cable, USB stick with software and tools
• Software: free access to the sbgCenter software to set up and program your inertial sensor and analyse the collected data
• Technical: technical support, unlimited updates, dedicated support platform, customised training on demand, etc.

Technical specifications of the Ellipse 2-A Inertial Sensor

• RMS accuracy:
  • Pitch/roll: 0.1°
  • Heading: 0.8° (magnetometers)
  • Heave accuracy: 5 cm or 5%
  • Heave period: up to 15 s
• Interfaces:
  • Available data: Euler angles, quaternions, velocity, position, heave, delta angles, barometric data, status, etc.
  • Output rate: 200 Hz, 1,000 Hz
  • Main serial interface: RS-232, RS-422, USB (up to 921,600 bps)
  • Serial protocols: binary eCom protocol, NMEA, ASCII, TSS
  • CAN interface: CAN 2.0 A/B (up to 1 Mbit/s)
  • Input pulses: Events, PPS, DMI (direction or quadrature)
  • Output pulses: PPS synchronisation, virtual DMI
  • 2 inputs, 1 output
• Accelerometers:
  • Range: +/- 16 g
  • Gain stability: 1000 ppm
  • Non-linearity: 1500 ppm
  • Bias stability: +/- 5 mg
  • Random walk / noise density: 57 µg/√Hz
  • Bias in-run instability: 14 µg
  • VRE: 50 µg/g² RMS
  • Alignment error: < 0.05°
  • Bandwidth: 390 Hz
• Gyroscopes:
  • Range: +/- 450 °/s
  • Gain stability: 500 ppm
  • Non-linearity: 50 ppm
  • Bias stability: +/- 0.2 °/s
  • Random walk / noise density: 0.15°/√hr
  • Bias in-run instability: 7°/h
  • VRE: 1°/h/g² RMS
  • Alignment error: < 0.05°
  • Bandwidth: 133 Hz
• Magnetometers:
  • Range: +/- 50 Gauss
  • Gain stability: < 0.5%
  • Non-linearity: < 0.1% FS
  • Bias stability: +/- 1 mGauss
  • Random walk / noise density: 3 mGauss
  • Bias in-run instability: 1.5 mGauss
  • Alignment error: < 0.1°
  • Bandwidth: 22 Hz
• Input voltage: 5-36 V
• Consumption: < 460 mW
• Operating temperature: -40 to 85 °C
• Shock limit: 2,000 g
• Operating vibration: 8 g RMS (20 Hz to 2 kHz per MIL-STD 810G)
• Mean time between failures: 50,000 h
• Dimensions: 46 x 45 x 24 mm
• Weight: 45 g
• IP rating: IP68

Resources for the 2-A Inertial Sensor

Check out our resources to invest in your Ellipse 2-A inertial system with full knowledge of the facts:

• Ellipse 2-A Inertial Sensor brochure (en)
• Ellipse 2-A inertial sensor marine/bathymetry test results (en)