US: 3D Analysis of Ultrasound Systems

3D analysis of ultrasound emitting sources and time delay response simulation

The US module is a powerful simulation tool that computes several parameters of systems that use ultrasound waves by applying the Geometrical Theory of Diffraction (GTD).

The US module is very useful for the automotive industry, one of its main applications being the analysis of self-parking systems.

More specifically, the US module can be used for:

  • The computation of the sound pressure field at any given point by adding the contributions of the paths the ultrasound waves take from their source to each point. These paths are computed by taking into account the effects the sound waves make during their propagation, i.e: reflection, diffraction and transmission.
  • The time-domain simulation of the delay process at a given point. This allows the user to visualize the observed sound pressure at a given point as a result of the propagation of the sound waves from the ultrasound sources to that point.
  • The computation of the coupling between an ultrasound source and an ultrasound receiver, that is, the measurement of the energy emitted by the receiver that is absorbed by the receiver.
  • The analysis of the Doppler effect when the ultrasound source, objects and/or observation points are moving with respect to each other.

The US module also provides the user with a powerful tool to design the ultrasound pattern — this is, the strength of the signal along each direction in a sphere centered at the source. These ultrasound patterns can be saved as DUS files and be used in simulations as many times the user wants.

In addition, the US module facilitates the integration with external tools thanks to its closed loop simulation support. Closed loop simulations are run by using the command line, so the graphical user interface is not needed. These type of simulations have all of their parameters defined in text files, which allows running multiple simulations in quick succession changing the parameters before each simulation.

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