ULTRASONIC SPECTROMETER Russian patent published in 2020 - IPC G01N29/02 G01N29/36 

FIELD: medicine.

SUBSTANCE: invention refers to medical equipment, namely to ultrasonic interferometry, and is intended for ultrasonic spectrometry when examining biological fluids. Ultrasonic spectrometer comprises housing, heating element, temperature sensor, measuring chamber with two resonators installed in it, represented by ultrasonic vibrations transducers and thermostatically controlled cells, each of the resonators is configured to be connected to an independent measurement channel, represented by a phase-sensitive circuit, and a control module configured to be connected to the heating element and the temperature sensor. Phase-sensitive circuit includes a direct digital synthesis (DDS) signal generator and an analogue-to-digital converter comprising a first input and a second input. DDS signal generator is configured to be connected to the resonator input and the first input of the analogue-to-digital converter. Resonator output is configured to be connected to the second input of the analogue-to-digital converter, the control module is configured to be connected to the DDS signal generator.

EFFECT: high accuracy of measuring resonant frequency and width of the resonance peak of the sample of the analyzed biological fluid.

1 cl, 3 dwg