I|||||||||||||||||||||ll||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||l|l|
`
`US 200401 8t3387A1
`
`(19; United States
`(12) Patent AppIIC3tI0fl PllbIIC3lZIOIl
`Kosuda et al.
`
`(10) Pub. No.: US 2004/0136387 A1
`(43) Pub. Date:
`Sep. 23, 2004
`
`(54) PULSE METER, METHOD FOR
`CONTROLLING PULSE METER,
`WRISTWATCH-TYPE INFORMATION
`DEVICE, CONTROL PROGRAM, STORAGE
`MEDIUM, BLOOD VESSEL SIMULATION
`SENSOR, AND LIVING ORGANISM
`lNl"()RM/\'l‘ION MIC/\SUREMItlN'I‘ l)l'£VlCl'*l
`
`Mar. 19, 2003
`Sep. 2, 2003
`
`2003075840
`(JP)
`(JP) .................................... .. 2003-3106241
`
`Publication Classification
`
`Int. CL?
`(51)
`(52) U.S. CI.
`
`.. A6113 5'02
`............................................................ .. 600/302
`
`(75)
`
`Inventors: Tsukasn Kosudn, Matsumoto—shi (JP);
`Maknto Zakoji, Shiojiri-shi (JP);
`Ichim Aoshima, Nagano-ken (JP);
`Yutakn Kawafune, Matsumoto-shi (JP);
`Nurimitsu liuha, Shiojiri-shi (JP)
`
`Correspondence Address:
`SHIN.lYU GLOBAL IP COUNSELORS, LLP
`1233 20TH STREET, NW, SUITE 700
`WASHINGTON, DC 20036-2680 (US)
`
`(73)
`
`Assignee: Seiko Epson Corporation, Tokyo (JP)
`
`(21)
`
`Appl. No;
`
`l0,t"793,4l9
`
`(32)
`
`1'-‘iled:
`
`Mar. 5, 2004
`
`(30)
`
`Foreign Application Priority Data
`
`Mar. 19, 2003
`
`(JP)
`
`2003-(175839
`
`(5?)
`
`ABSTRACT
`
`The present invention realizes calculating a pulse rate accu-
`rately, even when a body movement component has no
`periodical characteristics, by surely removing the body
`movement cornponenl 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
`motion that alTet:ts the behavior of venous blood to the
`
`MPU. As El result, to the MPU removes the body motion
`Component from the pulse wave detection signal based on
`the body motion detection signal. A pulse rate calculating
`section calculates the pulse rate based on the pulse wave
`detection signal from which the body motion eomponent has
`been removed. The pulse rate is displayed on a liquid crystal
`display device.
`
`001
`
`Apple Inc.
`APL1027
`
`U.S. Patent No. 8,923,941
`
`Apple Inc.
`APL1027
`U.S. Patent No. 8,923,941
`
`001
`
`

`
`Patent Application Publication Sep. 23, 2004 Sheet 1 of 117
`
`US 2004/0186387 A1
`
`
`
`ACCELERATION[f(I<y2+I<z2)]
`
`ANIOUNT OF CHANGE IN HEIGHT vs. ACCELERATION [f(I<y2 + I<z2)]
`(OPERATIONAL FREQUENCY 2 Hz)
`
`4000
`
`3500
`
`3000
`2500
`mo’—
`
`1000
`
`500
`
`0
`
`5
`
`10
`
`I5
`
`20
`
`AMOUNT OF CHANGE IN HEIGHT [cm]
`
`002
`
`002
`
`

`
`Patent Application Publication Sep. 23, 2004 Sheet 2 of 117
`
`US 2004/0186387 A1
`
`003
`
`003
`
`

`
`004
`
`

`
`Patent Application Publication Sep. 23, 2004 Sheet 4 of 117
`
`US 2004/0186387 A1
`
`mmwmFm.1
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`
`Patent Application Publication Sep. 23, 2004 Sheet 5 of 117
`
`US 2004/0186387 A1
`
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`

`
`Patent Application Publication Scp. 23, 2004 Sheet 6 of 117
`
`US 2004/0186387 A1
`
`ACCELERATION SENSOR
`(X-AXIS) OUTPUT
`
`[mV]
`AMPLITUDE
`
`O07
`
`007
`
`

`
`Patent Application Publication Sep. 23, 2004 Sheet 7 of 117
`
`US 2004/0186387 A1
`
`
`
`s5E.om_%Egon
`
`fiE_>E_
`
`FREQUENCY [Hz]
`
`Fig.7
`
`008
`
`
`

`
`Patent Application Publication Scp. 23, 2004 Sheet 3 of 117
`
`US 2004/0186387 A1
`
`Y—AXlS ACCELERATION DATA (Ky)
`
`
`
`AMPLITUDE[mV]
`
`TIME [5]
`
`009
`
`009
`
`

`
`Patent Application Publication Sep. 23, 2004 Sheet 9 of 117
`
`US 2004/0186387 A1
`
`
`
`
`
`POWERSPECTRUM[Mvrms]
`
`
`
`III—
`IflII|'|I
`flllllllflfll
`l|lfll|lHlII|ll|llll1ljIlFZ
`aliliilflHiifflliiiilfllllfliiifimunulnfifiifi
`MMMMHMMIHIHfllfllllIflllllllfllflllllllllllllHHINIIIIIIJIllflllfllllllfllllllllflfllflfl
`
`
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`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`3
`
`FREQUENCY [Hz]
`
`Fig.9
`
`O10
`
`010
`
`

`
`Patent Application Publication Scp. 23, 2004 Sheet 10 of 11’?
`
`US 2004/0186387 A1
`
`Z-AXIS ACCELERATION DATA (K2)
`
`
`
`AMPLITUDE[mV]
`
`TIME [5]
`
`Fig.10
`
`011
`
`011
`
`

`
`Patent Application Publication Sep. 23, 2004 Sheet 11 of 117
`
`US 2004/0186387 A1
`
`
`
`_>_:E.om_%meson.
`
`WE.2):
`
`FREQUENCY [Hz]
`
`Fig.11
`
`012
`
`
`

`
`Patent Application Publication Scp. 23, 2004 Sheet 12 of 11’?
`
`US 2004/0186387 A1
`
`ACCELERATION SENSOR
`(Y,Z COMBINED) OUTPUT
`
`0
`
`8
`
`1 6
`
`24
`
`32
`
`TIME [5]
`
`5'
`§.
`l.IJ
`:1
`
`D '
`
`:...I
`D.
`
`E<
`
`£ ‘
`
`Fig.12
`
`O13
`
`013
`
`

`
`Patent Application Publication Sep. 23, 2004 Sheet 13 of 11’?
`
`US 2004/0186387 A1
`
`
`
`s5Eom%mmaoa
`
`FREQUENCY (Hz)
`
`Fig.13
`
`014
`
`
`

`
`Patent Application Publication Scp. 23, 2004 Sheet 14 of 11’?
`
`US 2004/0186387 A1
`
`SIMULATED LOW—FREQUENCY SIGNAL
`
`0
`
`8
`
`16
`
`24
`
`32
`
`TIME [3]
`
`5 .
`
`5
`LU
`
`Q:
`
`3
`':.....J
`CL
`
`2<
`
`1:
`
`Fig.14
`
`O15
`
`015
`
`

`
`Patent Application Publication Sep. 23, 2004 Sheet 15 of 11’?
`
`US 2004/0186387 A1
`
`SPECTRUM[mVrms]
`POWER
`
`FREQUENCY [Hz]
`
`Fig.15
`
`O16
`
`016
`
`

`
`Patent Application Publication Scp. 23, 2004 Sheet 16 of 11’?
`
`US 2004/0186387 A1
`
`PULSE SENSOR OUTPUT
`
`0
`
`8
`
`16
`
`24
`
`32
`
`TIME [s]
`
`S‘
`
`EL
`
`U
`CD
`I)
`*2_.I
`EL
`
`§<
`
`11
`
`Fig.16
`
`O17
`
`017
`
`

`
`Patent Application Publication Sep. 23, 2004 Sheet 17 of 11’?
`
`US 2004/0186387 A1
`
`TE.2:.
`
`s5E8%$38
`
`FREQUENCY [Hz]
`
`Fig.1?
`
`O18
`
`018
`
`
`

`
`Patent Application Publication Sep. 23, 2004 Sheet 18 of 11’?
`
`US 2004/0186387 A1
`
`OUTPUT AFTER SIGNAL PROCESSING (e(n))
`
`[mV]
`AMPLITUDE
`
`TIME [5]
`
`Fig.18
`
`O19
`
`019
`
`

`
`Patent Application Publication Sep. 23, 2004 Sheet 19 of 11’?
`
`US 2004/0186387 A1
`
`7::>E_
`
`s5Eom%meson.
`
`FREQUENCY [Hz]
`
`F
`
`ig.19
`
`020
`
`020
`
`
`

`
`Patent Application Publication Sep. 23, 2004 Sheet 20 of 11’?
`
`US 2004/0186387 A1
`
`LOW FREQUENCY NOT REMOVED
`
`[mV]
`AMPLITUDE
`
`Fig. 20
`
`021
`
`021
`
`

`
`Patent Application Publication Sep. 23, 2004 Sheet 21 of 11’?
`
`US 2004/0186387 A1
`
`RE.25
`
`s5Eom%Egon.
`
`Ilnlululli
`lllllll
`
`|.Iil.|lI.I|:II.I...I
`
`FREQUENCY [Hz]
`
`Fig. 21
`
`022
`
`022
`
`
`
`

`
`Patent Application Publication Sep. 23, 2004
`
`Um22
`
`US 2004/0186387 A1
`
`
`
`zo_Bm_m__ow_§..x_
`
`3:@_.
`
`m_v%E._.....--_........--._
`
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`
`O23
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`
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`
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`
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`
`

`
`Patent Application Publication Scp. 23, 2004 Sheet 23 of 11’?
`
`US 2004/0186387 A1
`
`X—AX|S ACCELERATION DATA (K11)
`
`[mV]
`AMPLITUDE
`
`TIME [s]
`
`Fig. 23
`
`024
`
`024
`
`

`
`Patent Application Publication Sep. 23, 2004 Sheet 24 of 11’?
`
`US 2004/0186387 A1
`
`TE.25
`
`
`
`_%Eom_%Egon.
`
`FREQUENCY [Hz]
`
`Fig.24
`
`O25
`
`025
`
`
`

`
`Patent Application Publication Sep. 23, 2004 Sheet 25 of 11’?
`
`US 2004/0186387 A1
`
`Y—AX|S ACCELERATION DATA (Ky)
`
`0
`
`8
`
`15
`
`24
`
`32
`
`TIME {3}
`
`S‘
`E.
`LIJ
`C)
`:3
`tr‘._J
`CL
`
`E<
`
`1:
`
`Fig.25
`
`O26
`
`026
`
`

`
`Patent Application Publication
`
`Sep. 23, 2004 Sheet 26 of 11’?
`
`US 2004/0186387 A1
`
`_m.E>E_
`
`_.,5Eom%Ego;
`
`.l.I1u
`
`I
`
`.H_1WV:CNEUQERF
`
`Fig. 26
`
`027
`
`
`

`
`Patent Application Publication Sep. 23, 2004 Sheet 27 of 11’?
`
`US 2004/0186387 A1
`
`Z-AXIS ACCELERATION DATA(Kz)
`
`
`
`AMPLITUDE[mV]
`
`TIME [3]
`
`Fig.2?
`
`O28
`
`028
`
`

`
`Patent Application Publication Sep. 23, 2004 Sheet 28 of 11’?
`
`US 2004/0186387 A1
`
`“u|.......l
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`
`FREQUENCY[H4
`
`Fig. 28
`
`029
`
`029
`
`
`

`
`Patent Application Publication Scp. 23, 2004 Sheet 29 of 11’?
`
`US 2004/0186387 A1
`
`ACCELERATION DATA [f(Kx2 + Ky2+ Kz?)]
`
`
`
`AMPLITUDE[mv]
`
`TIME [5]
`
`Fig. 29
`
`030
`
`030
`
`

`
`Patent Application Publication Sep. 23, 2004 Sheet 30 of 11’?
`
`US 2004/0186387 A1
`
`M..|:...||.|I.
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`
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`
`Fig. 30
`
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`
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`
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`

`
`Patent Application Publication Sep. 23, 2004 Sheet 31 of 11’?
`
`US 2004/0186387 A1
`
`DETECTED PULSE WAVE DATA
`
`
`
`AMPLITUDE[mV]
`
`TIME [s]
`
`Fig. 31
`
`032
`
`032
`
`

`
`Patent Application Publication Sep. 23, 2004 Sheet 32 of 11’?
`
`US 2004/0186387 A1
`
`we.25
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`
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`
`Fig. 32
`
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`
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`
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`

`
`Patent Application Publication Sep. 23, 2004 Sheet 33 of 11’?
`
`US 2004/0186387 A1
`
`OUTPUT AFTER SIGNAL PROCESSING (e(n))
`
`9 E
`
`.
`LU
`
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`
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`
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`
`Fig. 33
`
`034
`
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`
`

`
`Patent Application Publication Sep. 23, 2004 Sheet 34 of 11’?
`
`US 2004/0186387 A1
`
`
`
`
`
`llII|lIlI—1l _llMMfll|||M|lllMl Ml|| I nnnmnmmm
`
`
`[mVrms]
`
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`
`POWERSPECTRUM
`
`FREQUENCY [Hz]
`
`Fig. 34
`
`035
`
`035
`
`

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`mmP.
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`w
`
`mu
`
`US 2004/0186387 A1
`
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`
`Patent Application Publication Sep. 23, 2004 Sheet 36 of 11’?
`
`US 2004/0186387 A1
`
`DETECTED PULSE WAVE DATA
`
`
`
`AMPLITUDE[mV]
`
`we [3]
`
`Fig. 36
`
`037
`
`037
`
`

`
`Patent Application Publication Sep. 23, 2004 Sheet 37 of 11’?
`
`US 2004/0186387 A1
`
`WE.>E_
`
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`
`s5Eomn_wmm=son_
`
`FREQUENCY [Hz]
`
`Fig. 37
`
`038
`
`038
`
`
`

`
`Patent Application Publication Sep. 23, 2004 Sheet 38 of 11’?
`
`US 2004/0186387 A1
`
`OUTPUTAFTER SIGNAL PROCESSING (e(n))
`
`
`
`AMPLITUDE[mV]
`
`TIME [5]
`
`Fig. 38
`
`039
`
`039
`
`

`
`Patent Application Publication Sep. 23, 2004 Sheet 39 of 11’?
`
`US 2004/0186387 A1
`
`SPECTRUM [mvrrns]
`POWER
`
`0
`
`T
`
`2
`
`3
`
`4
`
`FREQUENCY [Hz]
`
`Fig. 39
`
`040
`
`040
`
`

`
`Patent Application Publication Sep. 23, 2004
`
`Sheet 40 of 11’?
`
`US 2004/0186387 A1
`
`
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`
`Patent Application Publication Sep. 23, 2004
`
`S
`
`heat 41 of 11’?
`
`US 2004/0186387 A1
`
`3..®.....--
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`
`Patent Application Publication Sep. 23, 2004 Sheet 42 of 11’?
`
`US 2004/0186387 A1
`
`COMPONENTS[mVrms]
`STROKE
`
`0
`
`1000
`
`2000
`
`3000
`
`- 4000
`
`AMOUNT OF PRESSURE CHANGE [mV]
`
`Fig.42
`
`O43
`
`043
`
`

`
`Patent Application Publication Sep. 23, 2004 Sheet 43 of 11’?
`
`US 2004/0186387 A1
`
`Fig. 43
`
`044
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`
`Patent Application Publication Scp. 23, 2004 Sheet 44 of 117
`
`US 2004/0186387 A1
`
`.81
`
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`
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`
`Fig. 44
`
`045
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`
`Patent Application Publication Sep. 23, 2004 Sheet 45 of 11’?
`
`US 2004/0186387 A1
`
`m_o_>m_o
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`
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`Patent Application Publication Scp. 23, 2004 Sheet 62 of 117
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`Patent Application Publication Sep. 23, 2004 Sheet 63 of 11’?
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`Patent Application Publication Sep. 23, 2004 Sheet 64 of 11’?
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`US 2004/0186387 A1
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`Patent Application Publication Sep. 23, 2004 Sheet 65 of 11’?
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`US 2004/0186387 A1
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`Patent Application Publication Sep. 23, 2004 Sheet 66 of 11’?
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`Patent Application Publication Sep. 23, 2004 Sheet 69 of 11’?
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`Patent Application Publication Scp. 23, 2004 Sheet 70 of 117
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`Patent Application Publication Scp. 23, 2004 Sheet 71 of 117
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`Patent Application Publication Sep. 23, 2004 Sheet 74 of 11’?
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`Patent Application Publication Sep. 23, 2004 Sheet 75 of 11’?
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`Patent Application Publication Sep. 23, 2004 Sheet 76 of 11’?
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`Patent Application Publication Sep. 23, 2004 Sheet 78 of 11’?
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`Patent Application Publication Sep. 23, 2004 Sheet 80 of 11’?
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`Patent Application Publication Sep. 23, 2004 Sheet 81 of 11’?
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`Patent Application Publication Sep. 23, 2004 Sheet 82 of 11’?
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`Patent Application Publication Sep. 23, 2004 Sheet 84 of 11’?
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`Patent Application Publication Sep. 23, 2004 Sheet 89 of 11’?
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`Patent Application Publication Sep. 23, 2004 Sheet 90 of 11’?
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`Patent Application Publication Sep. 23, 2004 Sheet 91 of 11’?
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`US 2004/0186387 A1
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`Sep. 23, 2004 Sheet 117 of 117
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`118
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`US 2004/0186387 A1
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`Sep. 23, 2004
`
`PULSE METER, METHOD FOR CONTROLLING
`PULSE METER, WRISTWATCH-TYPE
`INFORMATION DEVICE, CONTROL PROGRAM,
`STORAGE MEDIUM, BLOOD VESSEL
`SIMULATION SENSOR, AND LIVING ORGANISM
`lNl*”ORMA'l'lON 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,
`at 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 wristwatch-type 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.
`
`["003]
`
`2. Background Information
`
`[0004] Pulse meters mounted on part of the body and
`designed for measuring pulse during walking or running are
`conventionally known.
`
`[0005] For example. a wristwatch-type pulse meter is
`disclosed in Japanese Patent No. 2816944. The pulse meter
`(lisclosed in this literature employs a configuration wherein
`the frequency components corresponding to all the harmonic
`components 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-
`plete.
`
`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.
`
`SU M MARY 011'
`
`'I'I-IE IN \I'EN'l‘lON
`
`[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 above—mentioned 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 rncasuring 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.
`
`[0011] 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 pulse 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.
`
`[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 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
`
`119
`
`119
`
`

`
`US 2004/0186387 A1
`
`Sep. 23, 2004
`
`a pulse wave detection signal. The body motion component
`removing section is configured and arranged to remove a
`body motion component contained in the pulse wave detec-
`tion signal based on a relative positional dilTerence in a
`vertical direction between a position of a heart of the human
`body and a position where the pulse meter is attached. 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.
`
`[0013] According to another aspect of the present inven-
`tion, a blood vessel simulation sensor adapted to be attached
`to a human body to simulate a behavior of blood in vein of
`the human body is provided that comprises a casing, a
`simulation blood and a behavior detection sensor. The
`
`simulation blood is disposed inside the casing and has a
`viscosity substantially equal to a viscosity of the blood in
`vein. The behavior detection sensor
`is configured and
`arranged to detect a behavior of the simulation blood.
`
`[0014] These and other objects, features and advantages of
`the present invention will become apparent to those skilled
`in the art from the following detailed description, which,
`taken in conjunction with the annexed drawings, discloses
`preferred embodiments of the present invention.
`
`BRIEF I)l_-‘.S(_‘RIP'l‘l()1\l OF Till.’ DRAWINGS
`
`[0015] Referring now to the attached drawings which form
`a part of this original disclosure:
`
`[0016] FIG. 1 is an explanatory diagram of the relation-
`ship between the amount of change in a combined vector of
`acceleration vectors along two axes and the amount of body
`motion
`components
`(amount of
`stroke
`components)
`included in the output of a puls