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Título del libro: Acm International Conference Proceeding Series
Título del capítulo: Design of a Pulsed-Wave Doppler ultrasound blood flow detector based on a Programmable System-on-Chip (PSoC)

Autores UNAM:
DEMETRIO FABIAN GARCIA NOCETTI; MARTIN FUENTES CRUZ;
Autores externos:

Idioma:

Año de publicación:
2023
Palabras clave:

Analog to digital conversion; Application specific integrated circuits; Blood; Diagnosis; Digital to analog conversion; Hemodynamics; Integrated circuit design; Optical variables measurement; Personal computers; System-on-chip; Ultrasonics; Blood flow; Blood flow measurement; Doppler; Doppler ultrasound; Doppler ultrasound systems; Programmable system on chips; Programmable system-on chip module; Pulse wave dopple; Pulse-wave; Pulsed-wave Doppler; Demodulation


Resumen:

Doppler ultrasound systems are medical diagnostic equipment that measure blood flow in veins and arteries. These systems are widely used because they are considered non-invasive. This paper describes the design of a Pulsed Wave (PW) Doppler ultrasound blood flow detector for a bi-directional system, implemented in a Programmable System-on-Chip (PSoC-5LP) device that operates at 8MHz. In the PSoC-5LP, control signals, amplification, filtering, analog to digital conversion are implemented, and the digitized blood flow Doppler signals are transferred to a Personal Computer via an USB data communication port, for further processing in order to generate the Doppler spectra waveform. The transmission driver, the RF amplifier and the mixers for quadrature demodulation are implemented using external components. The implemented Doppler detector is reconfigurable; parameters of the system can be programmed, such as: operation frequency of the transducer, quadrature signals for demodulation, repetition frequency, number of pulses of the transmission burst and receiver enable pulse, which allows measuring a vessel at a certain depth. © 2023 ACM.


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