FEEDBACK PHOTOPLETHYSMOGRAPHY MEASURING DEVICE AND MEASURING METHOD THEREOF
First Claim
1. A feedback photoplethysmography measuring device, comprising:
- a measuring device, comprising;
a light emitter that emits light with a particular wavelength to a human body; and
a light receiver that receives the light with a particular wavelength transmitted through the human body or reflected by the human body, and converts the light to a photoplethysmography signal which is an electrical signal;
an analog/digital conversion unit that converts the photoplethysmography signal converted by the light receiver which is an analog signal to a photoplethysmography value which is a digital value;
a variation-degree calculation unit that calculates a photoplethysmography variation value according to the photoplethysmography value converted by the analog/digital conversion unit; and
a feedback emitted light amplitude adjustment unit that controls brightness of the light emitted by the light emitter according to a plurality of preset control values or the adjusted photoplethysmography variation value calculated by the variation-degree calculation unit, and adjusts the photoplethysmography variation value to a minimum variation value, to control the brightness of the light emitted by the light emitter to be optimal.
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Accused Products
Abstract
A feedback photoplethysmography measuring device is provided, including: a measuring device that measures a human body to obtain a photoplethysmography signal; an analog/digital conversion unit that converts the photoplethysmography signal measured by the measuring device to a photoplethysmography value which is a digital value; a variation-degree calculation unit that calculates a photoplethysmography variation value according to the photoplethysmography value converted by the analog/digital conversion unit; and a feedback emitted light amplitude adjustment unit that controls the measuring device according to a plurality of preset control values or the adjusted photoplethysmography variation value calculated by the variation-degree calculation unit, and adjusts the photoplethysmography variation value to a minimum variation value.
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Citations
34 Claims
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1. A feedback photoplethysmography measuring device, comprising:
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a measuring device, comprising; a light emitter that emits light with a particular wavelength to a human body; and a light receiver that receives the light with a particular wavelength transmitted through the human body or reflected by the human body, and converts the light to a photoplethysmography signal which is an electrical signal; an analog/digital conversion unit that converts the photoplethysmography signal converted by the light receiver which is an analog signal to a photoplethysmography value which is a digital value; a variation-degree calculation unit that calculates a photoplethysmography variation value according to the photoplethysmography value converted by the analog/digital conversion unit; and a feedback emitted light amplitude adjustment unit that controls brightness of the light emitted by the light emitter according to a plurality of preset control values or the adjusted photoplethysmography variation value calculated by the variation-degree calculation unit, and adjusts the photoplethysmography variation value to a minimum variation value, to control the brightness of the light emitted by the light emitter to be optimal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A feedback photoplethysmography measuring device, comprising:
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a measuring device, comprising; a plurality of light emitters that emit light with a particular wavelength but in different sequences to a human body respectively; and a light receiver that receives the light with a particular wavelength but in different sequences transmitted through the human body or reflected by the human body, and converts the light to a plurality of photoplethysmography signals which are electrical signals; a light emission sequence control unit that sends each of a plurality of emitted light sequence signals to each of the light emitters through phase, pulse or sine-wave control, to control time and frequency of the light emitted by each of the light emitters; an analog/digital conversion unit that converts the photoplethysmography signals converted by the light receiver which are analog signals to a photoplethysmography value which is a digital value respectively; a variation-degree calculation unit that calculates a plurality of photoplethysmography variation values according to the photoplethysmography values converted by the analog/digital conversion unit; and a feedback emitted light amplitude adjustment unit that controls brightness of the light emitted by each of the light emitters according to a plurality of preset control values or the adjusted photoplethysmography variation values calculated by the variation-degree calculation unit, and adjusts at least one of the photoplethysmography variation values to a minimum variation value, to control the brightness of the light emitted by the light emitter corresponding to the minimum variation value to be optimal. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. A measuring method of a feedback photoplethysmography measuring device, comprising:
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emitting, by a light emitter, light with a particular wavelength to a human body; receiving, by a light receiver, the light with a particular wavelength transmitted through the human body or reflected by the human body, and converting the light to a photoplethysmography signal which is an electrical signal; converting, by an analog/digital conversion unit, the photoplethysmography signal converted by the light receiver which is an analog signal to a photoplethysmography value which is a digital value; calculating, by a variation-degree calculation unit, a photoplethysmography variation value according to the photoplethysmography value converted by the analog/digital conversion unit; and adjusting, by a feedback emitted light amplitude adjustment unit, the photoplethysmography variation value, and controlling brightness of the light emitted by the light emitter according to a plurality of preset control values or the adjusted photoplethysmography variation value calculated by the variation-degree calculation unit; wherein the feedback emitted light amplitude adjustment unit judges whether the adjusted photoplethysmography variation value is the minimum variation value. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
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26. A measuring method of a feedback photoplethysmography measuring device, comprising:
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emitting, by a plurality of light emitters, light with a particular wavelength but in different sequences to a human body; receiving, by a light receiver, the light with a particular wavelength but in different sequences transmitted through the human body or reflected by the human body, and converting the light to a plurality of photoplethysmography signals which are electrical signals; sending, by a light emission sequence control unit, each of a plurality of emitted light sequence signals to each of the light emitters through phase, pulse or sine-wave control, to control time and frequency of the light emitted by each of the light emitters; converting, by an analog/digital conversion unit, the photoplethysmography signals converted by the light receiver which are analog signals to a plurality of a photoplethysmography value which is a digital value; calculating, by a variation-degree calculation unit, a plurality of photoplethysmography variation values according to the photoplethysmography values converted by the analog/digital conversion unit; and adjusting, by a feedback emitted light amplitude adjustment unit, the photoplethysmography variation values, and controlling brightness of the light emitted by each of the light emitters according to a plurality of preset control values or the adjusted photoplethysmography variation values calculated by the variation-degree calculation unit respectively; wherein the feedback emitted light amplitude adjustment unit judges whether at least one of the adjusted photoplethysmography variation values is the minimum variation value. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34)
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Specification