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`US 20040186387A1
`
`(19} United States
`{12) Patent Application Publication no) Pub. No.: US 2004/0186387 A1
`
`Kosuda et a].
`(43) Pub. Date:
`Sep. 23, 2004
`
`Mar. 19, 2003
`Sep. 2, 2003
`
`20034175840
`2003—3113624
`
`Publication Classification
`
`1m. CIR ..................................................... .. A611; sun
`(51)
`(52) U.S.CI.
`rrrrrrrrrrrr
`....
`...................................... “worse:
`
`(57)
`
`ABSTRACT
`
`(54) PULSE METER, METHOD FOR
`CONTROLLING PULSE METER,
`WRISTWATCH-TYPF. INFORMATION
`DEVICE, CONTROL PROGRAM, STORAGE
`MEDIUM, BLOOD VESSEL SIMULATION
`SENSOR, AND LIVING ORGANISM
`INFORMATION MEASUREMENT DEVICE
`
`Inventors: Tsukasn Kosudn, Malsumoloishi (JP);
`Mokoto Zakoji, Shiojiri-shi (JP);
`Iehim Aoshima, Nagano-ken (JP);
`Yutakn Kawafune, Matsumoto-shi (J P);
`Nurimitsu Balm, Shiojiri-shi (JP)
`
`Correspondence Address:
`SHINJYU GLOBAL 1P COUNSELORS, LLP
`[233 20TH STREET, NW, SUITE 700
`WASHINGTON, DC 20036-2680 (US)
`
`(73)
`
`Assignee: Seiko Epson Corporation, Tokyo (JP)
`
`(21)
`
`Appl. No.:
`
`101793319
`
`(22
`
`l-‘iled:
`
`Mar. 5, 2004
`
`(30)
`
`Foreign Application Priority Data
`
`Mar. 19, 2003
`
`2003-075839
`
`The present invention realizes calculating a pulse rate accu—
`rately, even when a body movement component has no
`periodical eharaeterislies. by surety removing the body
`movement component generated in a living organism from
`a pulse wave component A pulse wave detecting section
`includes a pulse wave sensor and outputs a pulse wave
`detection signal to an MPU functioning as a body motion
`component removing section. A body motion sensor outputs
`a body motion detection signal corresponding to a body
`molion that affects the behavior of Venous blood to the
`MPU. As a result, to the MPU removes the body motion
`enmponenl from the pulse wave detection signal based on
`the body motion detection signal. A pulse rate calculaling
`section calculates the pulse rate based on the pulse wave
`detection signal from which the body motion component has
`been removed. The pulse rate is displayed on a liquid crystal
`display device.
`
`US. Patent No. 8,923,941
`
`
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`t
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`1‘3
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`13
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`Apple Inc.
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`
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`Patent Application Publication Sep. 23, 2004 Sheet 1 Of 117
`
`US 2004/0186387 A1
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`US 2004/0186387A1
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`US 2004/0186387 A1
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`FFTRESULTDAEA[mVrms]
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`Patent Application Publication Sep. 23, 2004 Sheet 49 of 117
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`
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`
`

`

`US 2004/0186387 A1
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`
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`Patent Application Publication Sep. 23, 2004 Sheet 50 of 117
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`Patent Application Publication Sep. 23, 2004 Sheet 52 of 117
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`US 2004/0186387 A1
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`Patent Application Publication Sep. 23, 2004 Sheet 54 of 117
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`US 2004/0186387 A1
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`Patent Application Publication Sep. 23, 2004 Sheet 57 of 117
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`Patent Application Publication Sep. 23, 2004 Sheet 58 of 117
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`US 2004/0186387 A1
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`Patent Application Publication Sep. 23, 2004 Sheet 59 of 117
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`Patent Application Publication Sep. 23, 2004 Sheet 60 of 117
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`Patent Application Publication Sep. 23, 2004 Sheet 61 of 117
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`Patent Application Publication Sep. 23, 2004 Sheet 62 of 117
`
`US 2004/0186387 A1
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`3 SLANTED UP
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`Patent Application Publication Sep. 23, 2004 Sheet 63 of 117
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`US 2004/0186387 A1
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`Patent Application Publication Sep. 23, 2004 Sheet 64 of 117
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`US 2004/0186387 A1
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`Patent Application Publication Sep. 23, 2004 Sheet 65 of 117
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`US 2004/0186387 A1
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`FITBIT, Ex. 1027
`
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`Patent Application Publication Sep. 23, 2004 Sheet 66 of 117
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`Patent Application Publication Sep. 23, 2004 Sheet 69 of 117
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`US 2004/0186387A1
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`Patent Application Publication Sep. 23, 2004 Sheet 70 of 117
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`
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`DIRECTION OF
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`Patent Application Publication Sep. 23, 2004 Sheet 71 of 117
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`US 2004/0186387A1
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`US 2004/0186387 A1
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`Patent Application Publication Sep. 23, 2004 Sheet 73 of 117
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`US 2004/0186387A1
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`Patent Application Publication Sep. 23, 2004 Sheet 76 of 117
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`ADAPTIVE FILTER OUTPUT
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`Patent Application Publication Sep. 23, 2004 Sheet 78 of 117
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`Patent Application Publication Sep. 23, 2004 Sheet 30 of 117
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`Patent Application Publication Sep. 23, 2004 Sheet 81 of 117
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`US 2004/0186387 A1
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`US 2004/0186387 A1
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`Patent Application Publication Sep. 23, 2004 Sheet 82 of 117
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`Patent Application Publication Sep. 23, 2004 Sheet 83 of 117
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`US 2004/0186387 A1
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`US 2004/0186387 A1
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`Patent Application Publication Sep. 23, 2004 Sheet 34 of 117
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`US 2004/0186387 A1
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`Patent Application Publication Sep. 23, 2004 Sheet 36 of 117
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`US 2004/0186387 A1
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`US 2004/0186387 A1
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`Patent Application Publication Sep. 23, 2004 Sheet 88 of 117
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`US 2004/0186387 A1
`
`1400
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`Patent Application Publication Sep. 23, 2004 Sheet 89 of 117
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`Fig. 87
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`US 2004/0186387 A1
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`1400
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`Patent Application Publication Sep. 23, 2004 Sheet 90 of 117
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`Patent Application Publication Sep. 23, 2004 Sheet 91 of 117
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`US 2004/0186387 A1
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`Patent Application Publication Sep. 23, 2004 Sheet 92 of 117
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`Patent Application Publication Sep. 23, 2004 Sheet 96 of 117
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`Patent Application Publication Sep. 23, 2004 Sheet 97 of 117
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`US 2004/0186387A1
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`Patent Application Publication Sep. 23, 2004 Sheet 98 of 117
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`US 2004/0186387 A1
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`Patent Application Publication Sep. 23, 2004 Sheet 99 of 117
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`US 2004/0186387A1
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`Patent Application Publication Sep. 23, 2004 Sheet 100 of 117 US 2004/0186387A1
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`Patent Application Publication Sep. 23, 2004 Sheet 103 of 117 US 2004/0186387A1
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`DATAAMPLITUDE
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`Patent Application Publication Sep. 23, 2004 Sheet 104 of 117 US 2004/0186387A1
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`FITBIT, Ex. 1027
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`Patent Application Publication Sep. 23, 2004 Sheet 105 of 117 US 2004/0186387A1
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`FITBIT, Ex. 1027
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`170 = BLOOD VESSEL SIMULATION SENSOR
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`Patent Application Publication Sep. 23, 2004 Sheet 106 of 117 US 2004/0186387 A1
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`Patent Application Publication Sep. 23, 2004 Sheet 108 of 117 US 2004/0186387A1
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`ARTERY
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`109
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`Patent Application Publication Sep. 23, 2004 Sheet 110 of 117
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`US 2004/0186387A1
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`Patent Application Publication Sep. 23, 2004 Sheet 111 of 117
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`US 2004/0186387A1
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`OPERATION IN Y—AXIS DIRECTION
`
`Fig. 107
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`112
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`FITBIT, Ex. 1027
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`

`

`Patent Application Publication Sep. 23, 2004 Sheet 112 of 117
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`US 2004/0186387A1
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`OPERATION IN Z-AXIS DIRECTION
`
`STROKECOMPONENTS[mVrms)
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`FITBIT, Ex. 1027
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`Patent Application Publication Sep. 23, 2004 Sheet 113 of 117
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`114
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`FITBIT, Ex. 1027
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`Patent Application Publication Sep. 23, 2004 Sheet 114 of 117
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`US 2004/0186387A1
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`115
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`FITBIT, Ex. 1027
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`

`

`ARTERY
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`US 2004/0186387 A1
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`Patent Application Publication Sep. 23, 2004 Sheet 115 of 117
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`FITBIT, Ex. 1027
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`Patent Application Publication Sep. 23, 2004 Sheet 116 of 117
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`US 2004/0186387A1
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`117
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`FITBIT, Ex. 1027
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`

`Publication
`
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`US 2004f0186387 Al
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`Patent Application
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`118
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`FITBIT, Ex. 1027
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`US 2004/0186387 A1
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`Sep. 23, 2004
`
`119
`
`[001.1] According to another aspect of the present inven—
`tion, a pulse meter adapted to be attached to a human body
`to measure a pulse of the human body is provided that
`comprises a pulse wave detecting section, a body motion
`detecting section, a body motion component removing sec-
`tion. and a pulse rate calculating section. The pulse wave
`detecting section is configured and arranged to detect a pulse
`wave based on a signal from a pulse wave sensor and output
`a pulse wave detection signal. The body motion detecting
`section is configured and arranged to detect accelerations
`corresponding to body motions that affect a vein behavior
`based on a signal from an acceleration sensor and output a
`body motion detection signal. The body motion component
`removing section is configured and arranged to remove a
`body motion component contained in the pu lse wave detec-
`tion signal based on the body motion detection signal. The
`pulse rate calculating section is configured and arranged to
`calculate a pulse rate based on the pulse wave detection
`signal from which the body motion component has been
`removed.
`
`PULSE METER, METHOD FOR CONTROLLING
`PULSE METER, WRISTWATCflnTYPE
`INFORMATION DEVICE, CONTROL PROGRAM,
`STORAGE MEDIUM, BLOOD VESSEL
`SIMULATION SENSOR, AND LIVING ORGANISM
`INFORMATION MEASUREMENT DEVICE
`
`BACKGROUND OF THE INVENTION
`
`[0001]
`
`1. Field of the Invention
`
`[0002] The present invention relates to a pulse meter, a
`method for controlling a pulse meter, a wristwatch-type
`information device, a control program, a storage medium, a
`blood vessel simulation sensor, and a living organism infor-
`mation measurement device. The present invention particu-
`larly relates to a pulse meter, a method for controlling a
`pulse meter, a wristwatchwtype information device, a control
`program, a storage medium, a blood vessel simulation
`sensor, and a living organism information measurement
`device that are suitable for being mounted on a person‘s arm
`and measuring pulse during walking or running.
`
`[0003]
`
`2. Background Information
`
`Pulse meters mounted on part of the body and
`[0004]
`designed for measuring pulse during walking or running are
`conventionally known.
`
`a wristwatch-type pulse meter is
`For example,
`[0005]
`disclosed in Japanese Patent No. 2816944. The pulse meter
`disclosed in this literature employs a configuration wherein
`the frequency components corresponding to all the harmonic
`componean of a body motion signal detected by an accel-
`eration sensor are removed from the frequency analysis
`results of a pulse wave signal based on the frequency
`analysis results of the body motion signal, the frequency
`components having the maximum power are extracted from
`among the frequency analysis results of the pulse wave
`signal from which the harmonic components of the body
`motion signal have been removed, and the pulse rate is
`calculated based on the extracted frequency components.
`
`In the above-mentioned conventional pulse meter,
`[0006]
`not all the body motion components generated in the body
`and included in the pulse sensor signal are necessarily
`registered because the body motion components are detected
`by the acceleration sensor, and it has been possible that the
`removal of the body motion components may not be com-
`pletc.
`
`In conventional practice, the body motion compo—
`[0007]
`nents cannot be registered completely, so the body motion
`signal is identified using the characteristics of the harmonic
`components from the frequency analysis results in order to
`remove the body motion components contained in the pulse
`sensor signal, and because the identified body motion signal
`is removed and the pulse wave signal extracted, there have
`been problems in that the body motion components cannot
`be removed and, consequently, the pulse cannot be correctly
`determined when the body motion does not have cyclic
`characteristics.
`
`In view of the above, it will be apparent to those
`[0008]
`skilled in the art from this disclosure that there exists a need
`for an improved pulse meter, method for controlling a pulse
`meter, wristwatch-type information device, control program,
`storage medium, blood vessel simulation sensor, and living
`
`organism information measurement device. This invention
`addresses this need in the art as well as other needs, which
`will become apparent to those skilled in the art from this
`disclosure.
`
`SUMMARY OF THE INVEN'I‘ION
`
`[0009] An object of the present invention is to provide a
`pulse meter,
`a method for controlling a pulse meter, a
`wristwatch-type information device. a control program, a
`storage medium, a blood vessel simulation Sensor, and a
`living organism information measurement device that can
`accurately remove the body motion components generated
`in the body from the pulse components and calculate the
`pulse rate even when the body motion components do not
`have cyclic characteristics by more accurately registering
`the body motion components contained in the pulse sensor
`signal.
`
`In order to achieve the abovementioned and other
`[0010]
`objectives, a living organism information measurement
`device adapted to be attached to a human body to measure
`living organism information is provided that comprises a
`pulse wave detecting section, a body motion component
`removing section and a living organism information mea—
`suring section. The pulse wave detecting section is config—
`ured and arranged to output a pulse wave detection signal by
`using a pulse wave sensor. The body motion component
`removing section is configured and arranged to detect a body
`motion component resulting from vein movements of the
`human body that is contained in the pulse wave detection
`signal and remove said body motion component contained in
`the pulse wave detection signal, The Living organism infor—
`mation measuring section is configured and arranged to
`measure living organism information based on the pulse
`wave detection signal from which the body motion compo-
`nent has been removed.
`
`[0012] According to another aspect of the present inven—
`tion, a pulse meter adapted to be attached to a human body
`to measure a pulse is provided that comprises a pulse wave
`detecting section, a body motion component removing sees
`tion and a pulse rate calculating section. The pulse wave
`detecting section is configured and arranged to detect a pulse
`wave based on a signal from a pulse wave sensor and output
`
`119
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`FITBIT, Ex. 1027
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`

`

`US 2004/0186387 A1
`
`Sep. 23, 2004
`
`a Z—axis acceleration detection signal outputted from a
`Z-axis acceleration sensor 122;
`
`[0026] FIG. 11 shows the frequency analysis results
`obtained by subjecting the detected Z—axis acceleration data
`K2 in FIG. 10 to FFT;
`
`[0027] FIG. 12 is a graph obtained by treating the Y—axis
`acceleration data Ky corresponding to the Y-axis accelera-
`tion detection signal outputted from the Y-axis acceleration
`sensor IZY, and the Z~axis acceleration data K2 correspond-
`ing to the Z-axis acceleration detection signal outputted
`from the Z-axis acceleration sensor 122 as vectors, and
`chronologically arranging combinch acceleration vector
`data obtained as a combined vector thereof;
`
`[0028] FIG. 13 shows the frequency analysis results
`obtained by subjecting the combined acceleration vector
`data [=\/(Ky;+Kz3}} in FIG. 12 to FF'I‘;
`[0029] FIG. 14 is a graph showing a chronological
`arrangement of a preset simulated low-frequency signal
`(using a triangular wave);
`
`[0030] FIG. 15 shows the frequency analysis results
`obtained by subjecting the simulated low-frequency signal
`in FIG. 14 to FFF;
`
`[0031] FIG. 16 is a graph of a chronological arrangement
`of one example of the detected pulse data;
`
`[0032] FIG. 17 shows the frequency analysis results
`obtained by subjecting the detected pulse data in FIG. 16 to
`FFT;
`
`[0033] FIG. 18 is a graph plotted as a result of a chrono-
`logical arrangement of residual data obtained by combining
`the signals obtained by applying an adaptive filter to the
`amplified X-axis acceleration detection signal in FIG. 6, the
`combined acceleration vector signal
`in FIG. 12, and the
`simulated low-frequency signal in FIG. 14 for the pulse
`wave detection signal in FIG. 16;
`
`[0034] FIG. 19 shows the frequency analysis results
`obtained by subjecting the residual data in FIG. 18 to FFI';
`
`[0038] FIG. 23 is a graph of a chronological arrangement
`of detected X-axis acceleration data Kx;
`
`[0039] FIG. 24 shows the frequency analysis results
`obtained by subjecting the detected X—axis acceleration data
`Kit in FIG. 23 to FFI';
`
`120
`
`[0035] MG. 20 is a graph plotted