Versatile Signal Acquisition System for Ultrasound Equipment Frequency Domain Parameters Estimation

نویسندگان

  • Linas SVILAINIS
  • Vytautas DUMBRAVA
  • Andrius CHAZIACHMETOVAS
چکیده

Versatile system for ultrasound equipment parameters measurement is presented. The system is based on single direct digital synthesis (DDS) generator which is used for excitation and dual simultaneous sampling analog-to-digit (ADC) conversion channels. System is dedicated for ultrasound equipment frequency domain parameters measurement: transduction AC response, insertion loss AC response, harmonic distortion, noise and electrical impedance can be estimated. Since primary application of the system is the ultrasonic equipment performance evaluation, operating frequencies range corresponds to most common ultrasound frequencies. Frequency range 20 kHz to 30 MHz was targeted. Despite being aimed for parameters comparison and estimation, system is universal: several measurements can be arranged using one excitation and two reception channels. System structure and setups for the aforementioned measurements are presented. Modular PC104 form-factor construction allows operating the system in both local and remote PC connectivity mode. Setup for most common tasks and examples of measurement results obtained are presented. Copyright © 2013 IFSA.

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تاریخ انتشار 2013