Method and apparatus for acquiring bioinformation and apparatus for testing bioinformation
First Claim
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1. An apparatus for acquiring bioinformation, the apparatus comprising:
- a laser irradiator configured to irradiate a laser beam onto a region of interest including blood vessels;
a sensor configured to detect a change in a laser speckle pattern generated by the laser beam reflected from the region of interest;
a displacement measurer configured to determine a distance between the laser irradiator and the region of interest; and
a processor configured to acquire a biosignal indicating a change in blood flow within the blood vessels based on the detected change in the laser speckle pattern, and to acquire the bioinformation based on the biosignal and the determined distance,wherein the laser beam emitted from the laser irradiator is incident at an angle to the region of interest,wherein an irradiation direction of the laser beam is adjusted according to the distance, andwherein the sensor comprises a plurality of sensor devices,wherein the plurality of sensor devices comprises a first sensor device spaced apart from a second sensor device, andwherein the displacement measurer is further configured to determine the distance to be a first distance in response to the laser beam being detected by the first sensor device, and to determine the distance to be a second distance in response to the laser beam being detected by the second sensor device.
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Abstract
An apparatus for acquiring bioinformation, including a laser irradiator configured to irradiate a laser beam onto a region of interest including blood vessels; a sensor configured to detect a first change in a laser speckle pattern generated by the laser beam reflected from the region of interest; and a processor configured to acquire a biosignal indicating a second change in blood flow within the blood vessels based on the detected first change in the laser speckle pattern, and to acquire the bioinformation by using the biosignal, wherein the laser beam emitted from the laser irradiator is incident at an angle to the region of interest.
132 Citations
12 Claims
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1. An apparatus for acquiring bioinformation, the apparatus comprising:
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a laser irradiator configured to irradiate a laser beam onto a region of interest including blood vessels; a sensor configured to detect a change in a laser speckle pattern generated by the laser beam reflected from the region of interest; a displacement measurer configured to determine a distance between the laser irradiator and the region of interest; and a processor configured to acquire a biosignal indicating a change in blood flow within the blood vessels based on the detected change in the laser speckle pattern, and to acquire the bioinformation based on the biosignal and the determined distance, wherein the laser beam emitted from the laser irradiator is incident at an angle to the region of interest, wherein an irradiation direction of the laser beam is adjusted according to the distance, and wherein the sensor comprises a plurality of sensor devices, wherein the plurality of sensor devices comprises a first sensor device spaced apart from a second sensor device, and wherein the displacement measurer is further configured to determine the distance to be a first distance in response to the laser beam being detected by the first sensor device, and to determine the distance to be a second distance in response to the laser beam being detected by the second sensor device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A bioinformation testing apparatus, the bioinformation testing apparatus comprising:
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a main body; straps connected to the main body; and an apparatus for acquiring bioinformation arranged on at least one from among an inner surface of the main body or an inner surface of the straps, wherein the apparatus for acquiring the bioinformation comprises; a laser irradiator configured to irradiate a laser beam onto a region of interest including blood vessels; a sensor configured to detect a change in a laser speckle pattern generated by the laser beam reflected from the region of interest; a displacement measurer configured to determine a distance between the laser irradiator and the region of interest; and a processor configured to acquire a biosignal indicating a change in blood flow within the blood vessels based on the detected change in the laser speckle pattern, and to acquire the bioinformation based on the biosignal and the determined distance, wherein the laser beam emitted from the laser irradiator is incident at an angle to the region of interest, wherein an irradiation direction of the laser beam is adjusted according to the distance, and wherein the sensor comprises a plurality of sensor devices, wherein the plurality of sensor devices comprises a first sensor device spaced apart from a second sensor device, and wherein the displacement measurer is further configured to determine the distance to be a first distance in response to the laser beam being detected by the first sensor device, and to determine the distance to be a second distance in response to the laser beam being detected by the second sensor device. - View Dependent Claims (10, 11)
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12. A method of acquiring bioinformation, the method comprising:
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irradiating, using a laser irradiator, a laser beam onto a region of interest including blood vessels; determining, using a displacement measurer, a distance between the laser irradiator and a skin surface corresponding to the region of interest; detecting, using a sensor, a change in a laser speckle pattern from the region of interest; acquiring, using a processor, a biosignal indicating a change in blood flow within the blood vessels using the detected change in the laser speckle pattern; and acquiring, using the processor, the bioinformation based on the biosignal and the determined distance, wherein an irradiation direction of the laser beam is adjusted according to the distance, wherein the sensor comprises a plurality of sensor devices, and wherein the plurality of sensor devices comprises a first sensor device spaced apart from a second sensor device, and wherein the determining further comprises determining the distance to be a first distance in response to the laser beam being detected by the first sensor device, and determining the distance to be a second distance in response to the laser beam being detected by the second sensor device.
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Specification