Ultrasonic Doppler effect (Ultrasound Experimental Set 6)

The ultrasonic Doppler effect is used in a multitude of measuring devices in industry as well as in medicine. These include devices for measuring flow, characterising blood flow and the foetal Doppler for measuring heart sounds of foetuses.The set includes the necessary components for building a flow circuit with adjustable flow rates, an ultrasound pulse Doppler with probes of different frequency as a measuring device and software for signal recording and signal processing.With this one can investigate the essential dependences of the shift in Doppler frequency upon transmission frequency, incidence angle and flow velocity.The flow pipes of different diameters and the standpipes contained in the circuit allow experiments on fluid mechanics. These include the continuity equation and the Hagen-Poiseuille equation. The flow speed velocity is here measured by means of the Doppler device and the pressure drops with the standpipes.By supplementing the set with the Doppler probe and the arm phantom, experiments can be carried out on Doppler sonography (application of the ultrasonic Doppler effect in medicine).