Bi-point detection type heart-rate monitor and its heart-rate monitoring method
First Claim
1. A bi-point detection type heart-rate monitor comprising:
- two electrically conductive contact terminals for the touching of the two hands or feet of a person;
an amplifier-filter circuit adapted to sample impedance signal between said contact terminals, to amplify the impulse of the sampled impedance signal, and to remove noises from the sampled impedance signal;
a waveform converter adapted to rectify outputted waveform from said amplifier-filter circuit into a square wave; and
a processing and output circuit adapted to receive and process the square wave signal outputted by said wave form converter, to obtain the mean frequency of peaks of the received square wave signal by means of a computing process, and to output the frequency value thus obtained to a display unit for display.
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Accused Products
Abstract
A bi-point detection type heart-rate monitor is constructed to include two electrically conductive contact terminals for the touching of the two hands or feet of a person, an amplifier-filter circuit adapted to sample impedance signal between the contact terminals, to amplify the impulse of the sampled impedance signal, and to remove noises from the sampled impedance signal, a waveform converter adapted to rectify outputted waveform from the amplifier-filter circuit into a square wave, and a processing and output circuit adapted to receive and process the square wave signal outputted by the wave form converter, to obtain the mean frequency of peaks of the received square wave signal by means of a computing process, and to output the frequency value thus obtained to a display unit for display.
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Citations
12 Claims
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1. A bi-point detection type heart-rate monitor comprising:
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two electrically conductive contact terminals for the touching of the two hands or feet of a person;
an amplifier-filter circuit adapted to sample impedance signal between said contact terminals, to amplify the impulse of the sampled impedance signal, and to remove noises from the sampled impedance signal;
a waveform converter adapted to rectify outputted waveform from said amplifier-filter circuit into a square wave; and
a processing and output circuit adapted to receive and process the square wave signal outputted by said wave form converter, to obtain the mean frequency of peaks of the received square wave signal by means of a computing process, and to output the frequency value thus obtained to a display unit for display. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 10, 11, 12)
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9. A bi-point detection type heart-rate monitoring method comprising the steps of:
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(a) letting the hands (legs) of the person to be examined hold a respective contact terminal;
(b) using a circuit to apply a predetermined voltage to the two contact terminals in contact the hands (legs) of the person to be examined, and then measuring the impedance signal between the two contact terminals;
(c) driving an amplifier-filter circuit to amplify the impedance signal thus measured and to remove noises from the signal;
(d) driving a waveform converter to rectify outputted waveform from the amplifier-filter circuit into a square wave;
(e) driving a processing and output circuit to receive and process the square wave signal outputted by said wave form converter, to obtain the mean frequency of peaks of the received square wave signal by means of a computing process, and to output the frequency value thus obtained to a display unit for display.
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Specification