Pulse wave detecting apparatus
First Claim
1. A pulse wave detecting apparatus, comprising:
- a pulse wave sensor having a press surface on which a plurality of pressure sensing elements are provided in an array, said pulse wave sensor being adapted to be pressed at said press surface against a body surface of a subject such that the array of pressure sensing elements crosses over a blood vessel underlying said body surface, each of said pressure sensing elements generating an electric signal representative of a pulse wave transmitted thereto from said blood vessel via said body surface;
a main device receiving said electric signal from said each of said pressure sensing elements;
determining means for determining a correlation between a distribution of magnitudes of the electric signals as taken along said array of the pressure sensing elements, and each of a plurality of predetermined reference distributions which is indicative of a corresponding one of a plurality of different relative positions of said array of pressure sensing elements with respect to said blood vessel;
selecting means for selecting one of said reference distributions which provides the greatest correlation of all the correlations determined by said determining means; and
transmitting means for transmitting to said main device the electric signals generated from the pressure sensing elements in a portion of said array of pressure sensing elements which portion corresponds to the relative position indicated by the reference distribution selected by said selecting means.
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Accused Products
Abstract
A pulse wave detecting apparatus, including a pulse wave sensor having a press surface on which a plurality of pressure sensing elements are provided in an array, a main device receiving an electric signal from each of the pressure sensing elements, a determining device determining a correlation between a distribution of magnitudes of the electric signals as taken along the array of pressure sensing elements, and each of a plurality of predetermined reference distributions which is indicative of a corresponding one of a plurality of different relative positions of the array of pressure sensing elements with respect to the blood vessel, a selecting device selecting one of the reference distributions which provides the greatest correlation of all the correlations determined by the determined device, and a transmitting device transmitting to the main device the electric signals generated from the pressure sensing elements in a portion of the array of pressure sensing elements which portion corresponds to the relative position indicated by the reference distribution selected by the selecting device.
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Citations
9 Claims
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1. A pulse wave detecting apparatus, comprising:
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a pulse wave sensor having a press surface on which a plurality of pressure sensing elements are provided in an array, said pulse wave sensor being adapted to be pressed at said press surface against a body surface of a subject such that the array of pressure sensing elements crosses over a blood vessel underlying said body surface, each of said pressure sensing elements generating an electric signal representative of a pulse wave transmitted thereto from said blood vessel via said body surface; a main device receiving said electric signal from said each of said pressure sensing elements; determining means for determining a correlation between a distribution of magnitudes of the electric signals as taken along said array of the pressure sensing elements, and each of a plurality of predetermined reference distributions which is indicative of a corresponding one of a plurality of different relative positions of said array of pressure sensing elements with respect to said blood vessel; selecting means for selecting one of said reference distributions which provides the greatest correlation of all the correlations determined by said determining means; and transmitting means for transmitting to said main device the electric signals generated from the pressure sensing elements in a portion of said array of pressure sensing elements which portion corresponds to the relative position indicated by the reference distribution selected by said selecting means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification