The PVDF heart sounds impulse measuring circuit

Published:2011/8/14 22:19:00 Author:qqtang | Keyword: PVDF, heart sounds, impulse measuring circuit | From:SeekIC

In the figure is the PVD heart sounds impulse measuring circuit. The circuit consists of the single steady oscillator(4538), frequency distributor (4024), pulse generator(ICM7555), counter (4040), storage(ROM), 7-stage lock storage drive(7511),7-stage digital LED and so on. In figure (a) is the PVDF heart sounds impulse sensor structure circuit. For figure (a), PVDF film is a dome shell and it sticks out, so it can contact the earth well. As the PVDF material is soft, which can cling to the skin, its impedance can couple with the skin.



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