| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a heart rate detection device precisely obtaining signal components including the heart rate waveform of a human body from an output signal of a piezoelectric sensor. <P>SOLUTION: This heart rate detection device 10 is provided with a signal processing means 15 performing a frequency analysis on the output signal of the piezoelectric sensor 1 provided in a seat 2, and a determination means 16, when the amplitude of the signal components within a first set frequency included in the output signal is within a set amplitude range, determining that the signal components include a human body seating waveform indicating the seating of a person on the seat 2. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
