Aurora HD
magnetometer
- Aurora HD is an AHRS unit that provides true heading under certain conditions. It is built to perform under the most demanding conditions. It combines temperature compensated accelerometers, gyroscopes and magnetometers. Aurora HD is a new generation in the Motion Sensors Industry, which combines FPGA & DSP Processor, an advanced distributed parallel calculation algorithm delivers the maximum performance of the unit and it is available in both OEM and enclosed packages.
IMEMS Technology
Lenola, IT
Description
The developed AHRS Unit is the second generation of a motion sensor that provides true heading under certain conditions. This IMU has these specific tasks:
- Measure Euler angles. roll, pitch, yaw, which is three angles that describe the orientation of a rigid body in the space with respect to a fixed coordinate system;
- Linear velocities and the linear accelerations;
- True Heading for outdoor use.
- The AHRS unit contains a 3-axis magnetometer. The magnetometer measures the magnetic field at the sensor location. The sensor can be used to find the true magnetic north reference when influenced by the earth magnetic field. Any external magnetic signature has to be estimated and compensated, in order to obtain the best possible heading reference accuracy. The heading estimation is done by integrating the measurement from the magnetometer and the Yaw Gyroscope. The integration algorithm guarantees high accuracy heading measurement.
The motion sensor is capable of reading standard format messages from external sources such as GNSS signals or compass messages. The Motion sensor uses some of the information to Optimize the heading calculation. The AHRS sensors are being used mostly in aerospace applications, such as:
The company is now expanding globally and is looking for resellers with the competence to sell the device.
Advantages and Innovations
The device offers low cost, high accuracy IMU solutions, achieved by the FPGA & DSP (Digital Signal Processor) integration in the electronic design.
FPGA offers a whole new level of real-time performance and filtering excellence. The platform is taking advantage of real hardware circuitry, allowing extremely low latency measurements and estimation. In addition, in the AHRS Unit, the magnetometer is used to compensate for the low-frequency drift of the yaw gyroscope.
With focusing on data processing and noise filtering and not extremely high-cost gyroscopes and accelerometers the device has achieved high performance at low cost and small size. An advanced distributed parallel calculation algorithm delivers the maximum performance of the unit.
Specifications
-
Environment
-
Non-operating shock tolerance [g]
100
Operating shock tolerance [g]
10
Min. operating temperature [C]
-10
Max. operating temperature [C]
70
Splashproof casting
Y
Water resistant casting
Y
-
Power Supply
-
Min. Voltage (DC)
7
Max. Voltage (DC)
36
Power consumption [W]
3
-
Accelerometers
-
Num. of Accelerometers
3
Range [max g]
2
Bandwidth [ Hz ]
50
Alignment Error [ ± ° ]
0.1
Resolution [mg]
0.1
Noise
1
-
Operational
-
Interface types
Digital
Interfaces
RS-322, RS-422
Other interfaces and additional information
Ethernet
Output data formats
NMEA
Output frequency [ Hz ]
100
Max. rotation speed [deg/s]
100
Start up time [s]
10
-
Gyroscopes
-
Num. of Gyroscopes
3
Range [± ° / sec]
100
In-Run Bias Stability [ °/ hr]
1
Bandwidth [ Hz ]
50
Alignment Error [ ± ° ]
0.1
Resolution [ ° / s ]
0.01
-
General
-
Year of last update
2019
Year of initial development
2019
System components
Accelerometer(s), Gyroscope(s), Magnetometer(s), Temperature sensor
Height [mm]
47
Width [mm]
65
Length [mm]
65
Weight [gr]
225
-
Magnetometers
-
Num. of Magnetometers
3
Range [ ± Gauss ]
4
-
Accuracy
-
Heading dynamic accuracy [ ° ]
0.25
Pitch and Roll dynamic accuracy [ ° ]
0.25
Heading static accuracy [ ° ]
0.1
Pitch and Roll static accuracy [ ° ]
0.1
