Apparatus and method for measuring pulse wave
First Claim
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1. A pulse wave measuring apparatus comprising:
- a receiver configured to receive pulse wave signals sensed at at least two points of an object, the receiver comprising at least two sensors configured to sense the pulse wave signals, respectively;
an analog signal processor configured to amplify a voltage difference between two pulse wave signals from among the received pulse wave signals and integrate the amplified voltage difference; and
a digital signal processor configured to analog to digital (AD) convert a value of the integrated amplified voltage difference and obtain, from the converted value, a pulse transit time (PTT) between the at least two points corresponding to the two pulse wave signals,wherein the digital signal processor is configured to output the obtained PTT,wherein the receiver comprises a first sensor configured to sense a first pulse wave signal at a first point and a second sensor configured to sense a second pulse wave signal at a second point, the first point having a first distance from a heart of the object and the second point having a second distance from the heart of the object, the first distance and the second distance being different from each other,wherein the analog signal processor comprises a rectifier configured to rectify a signal of the amplified voltage difference.
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Abstract
There are provided an apparatus and a method for measuring pulse waves. The pulse wave measuring apparatus includes a receiver configured to receive pulse wave signals sensed at at least two points of an object; an analog signal processor configured to amplify a voltage difference between two pulse wave signals from among the received pulse wave signals and integrate the amplified voltage difference; and a digital signal processor configured to analog to digital convert a value of the integrated amplified voltage difference and obtain, from the converted value, a pulse transit time between the two points corresponding to the two pulse wave signals.
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Citations
18 Claims
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1. A pulse wave measuring apparatus comprising:
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a receiver configured to receive pulse wave signals sensed at at least two points of an object, the receiver comprising at least two sensors configured to sense the pulse wave signals, respectively; an analog signal processor configured to amplify a voltage difference between two pulse wave signals from among the received pulse wave signals and integrate the amplified voltage difference; and a digital signal processor configured to analog to digital (AD) convert a value of the integrated amplified voltage difference and obtain, from the converted value, a pulse transit time (PTT) between the at least two points corresponding to the two pulse wave signals, wherein the digital signal processor is configured to output the obtained PTT, wherein the receiver comprises a first sensor configured to sense a first pulse wave signal at a first point and a second sensor configured to sense a second pulse wave signal at a second point, the first point having a first distance from a heart of the object and the second point having a second distance from the heart of the object, the first distance and the second distance being different from each other, wherein the analog signal processor comprises a rectifier configured to rectify a signal of the amplified voltage difference. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A pulse wave measuring method performed by a pulse wave measuring apparatus, the pulse wave measuring method comprising:
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receiving, by a receiver of the pulse wave measuring apparatus, pulse wave signals sensed at at least two points of an object, the receiver comprising at least two sensors configured to sense the pulse wave signals, respectively; amplifying, by an analog signal processor of the pulse wave measuring apparatus, a voltage difference between two pulse wave signals from among the received pulse wave signals; rectifying, by a rectifier of the pulse wave measuring apparatus, a signal of the amplified voltage difference; integrating, by the analog signal processor of the pulse wave measuring apparatus, the rectified signal of the amplified voltage difference; analog-to-digital (AD) converting, by a digital signal processor of the pulse wave measuring apparatus, a value of the integrated amplified voltage difference; obtaining, by the digital signal processor of the pulse wave measuring apparatus, from the converted value, a pulse transit time (PTT) between the at least two points corresponding to the two pulse wave signals and outputting the obtained PTT, wherein the receiver comprises a first sensor configured to sense a first pulse wave signal at a first point and a second sensor configured to sense a second pulse wave signal at a second point, the first point having a first distance from a heart of the object and the second point having a second distance from the heart of the object, the first distance and the second distance being different from each other. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification