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  1. Inclination sensors
  2. Dynamic inclination sensors

Dynamic inclination sensors

The solution for sudden and fast movements

Acceleration-compensated inclination sensors are particularly suited for moving machines and vehicles subjected to sudden movements, shock and vibration, and which rely on a fast response and high signal quality. This type of inclination sensor combines the familiar 3D MEMS accelerometer with a 3D gyroscope. The accelerometer indirectly measures the inclination (like a static inclination sensor), while the gyroscope determines the rate of rotation. The result is uncompromising accuracy.

As mentioned under “Limitations of static inclination sensors”, unintentionally detected external accelerations have a huge impact on the accelerator, but a limited effect on the measured rotation rates of the gyroscope. Innovative, smart algorithms combine the signals from both measuring principles so that the above-mentioned effects are fully compensated and output without delay.

Dynamic inclination sensors with ‘6 degrees of freedom’

The dynamic inclination sensors set new standards with regard to signal quality and response characteristics. They use a 3D gyro sensor as well as a 3D acceleration sensor.
A 6-axes IMU (Inertial Measurement Unit) with intelligent sensor fusion filters determines the precise inclination values on this basis. Interference, as may for example occur in mobile applications due to vibrations, impact or starting and braking behaviour, do not falsify the measured values.

Use cases – What does a dynamic inclination sensor compensate for?

Vibration compensation/suppression

  • Process vibrations (cutting, digging)
  • General machine vibrations (diesel engine, hydraulic unit)
  1. Reference curve
  2. JBC (sensor fusion)
  3. Low-pass filter
  4. Unfiltered value

Shock compensation

  • Vehicle drives over a pothole
  • Vehicle hits object (crash)
  1. Reference curve
  2. JBC (sensor fusion)
  3. Low-pass filter
  4. Unfiltered value

Centrifugal compensation

  • Rotation of an excavator boom
  • Vehicle driving into/through a bend
  1. Reference curve
  2. JBC (sensor fusion)
  3. Low-pass filter
  4. Unfiltered value

Additional functions of dynamic inclination sensors

The main purpose of dynamic inclination sensors is to provide stabilised (acceleration compensated) data for tilt angles without the need for configuring any sensor parameters. However, for dynamic inclination sensors, it is also possible to output the acceleration forces (accelerometer) and rotation speed (gyroscope) separately for each of the three axes.

  • Monitoring the acceleration force along one or more axes can be used to implement additional functions or safety features on the controller side. The controller can stop the machine when a certain acceleration threshold is exceeded.
  • With the additional information about the rotation speed in z axis, it is, for example, possible to measure the horizontal (yaw-) rotation of the machine and detect the direction of travel of the respective vehicle.