Perception SoC based on an ultrasonic array of sensors: efficient DSP core implementation and subsequent experimental results

Authors:
A. Kassem;M. Sawan;M. Boukadoum;A. Haidar
Affiliations:
PolySTIM Neurotechnology Laboratory, Department of Electrical Engineering, école Polytechnique de Montréal, Montréal, QC, Canada;PolySTIM Neurotechnology Laboratory, Department of Electrical Engineering, école Polytechnique de Montréal, Montréal, QC, Canada;Department of Computer Sciences, Université du Québec à Montréal, Montrèal, QC, Canada;Department of Computer Engineering and Informatics, Beirut Arab University, Beirut, Lebanon
Venue:
EURASIP Journal on Applied Signal Processing
Year:
2005

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Abstract

We are concerned with the design, implementation, and validation of a perception SoC based on an ultrasonic array of sensors. The proposed SoC is dedicated to ultrasonic echography applications. A rapid prototyping platform is used to implement and validate the new architecture of the digital signal processing (DSP) core. The proposed DSP core efficiently integrates all of the necessary ultrasonic B-mode processing modules. It includes digital beamforming, quadrature demodulation of RF signals, digital filtering, and envelope detection of the received signals. This system handles 128 scan lines and 6400 samples per scan line with a 90° angle of view span. The design uses a minimum size lookup memory to store the initial scan information. Rapid prototyping using an ARM/FPGA combination is used to validate the operation of the described system. This system offers significant advantages of portability and a rapid time to market.