发明名称 PULSE WAVE DETECTING APPARATUS AND FOURIER TRANSFORM PROCESS APPARATUS
摘要 A pulse wave detecting apparatus is provided which is capable of accurately measuring a pulse rate, even with a calculation unit having low calculating capability. An A-D conversion circuit samples a pulse wave detected by a pulse wave sensor at 16 Hz to perform A-D conversion of the same and sequentially outputs resultant signals to a modified moving average process circuit. The modified moving average process circuit sequentially averages two of the signals from the A-D conversion circuit without duplication and outputs signals at 8 Hz, and an FFT circuit performs Fourier transform on signals obtained through the averaging. Another A-D conversion circuit samples kinetic noises detected by an acceleration sensor at 8 Hz to perform A-D conversion of the same and sequentially outputs resultant signals to another FFT circuit, and the FFT circuit performs Fourier transform on the input signals. A pulse rate calculation circuit obtains differences between the signals output by the FFT circuits to calculate a pulse rate. The pulse rate is displayed by a display section.
申请公布号 CA2444149(A1) 申请公布日期 2004.04.04
申请号 CA20032444149 申请日期 2003.10.03
申请人 SEIKO INSTRUMENTS INC. 发明人 TSUBATA, KEISUKE
分类号 A61B5/0245;A61B5/02;A61B5/024;A61B5/11;A61B8/02;G06F3/05;G06F17/14;H03K9/00;(IPC1-7):G06F17/14 主分类号 A61B5/0245
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