Heartbeat detecting apparatus

Details Heartbeat detecting apparatus Heartbeat detecting apparatus

2007-09-05

2011-12-20

Evanisko, George (Department: 3762)

Surgery

Diagnostic testing

Cardiovascular

C340S576000

Reexamination Certificate

active

08082026

ABSTRACT:
A heart beat sensor (10) comprises signal processing means (15) for performing frequency analysis of the output signal of a piezoelectric sensor (1) installed in a seat (2) and judging means (16) judges on the basis of the results of the frequency analysis that if the amplitude of the signal component in a first preset frequency range included in the output signal is in a preset amplitude range, the signal component includes a human body seating waveform indicating a person is seated in the seat (2).

REFERENCES:
patent: 5404128 (1995-04-01), Ogino et al.
patent: 6271760 (2001-08-01), Watanabe et al.
patent: 7219923 (2007-05-01), Fujita et al.
patent: 2006/0258915 (2006-11-01), Ueda et al.
patent: 2010/0018327 (2010-01-01), Kogure et al.
patent: 07-204167 (1995-08-01), None
patent: 2004-345617 (2004-12-01), None
patent: 2005-110910 (2005-04-01), None

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