as) United States
`a2) Patent Application Publication (0) Pub. No.: US 2004/0186387 Al
`(43) Pub. Date: Sep. 23, 2004
`
`Kosudaet al.
`
`US 20040186387A1
`
`(54) PULSE METER, METHOD FOR
`CONTROLLING PULSE METER,
`WRISTWATCH-TYPE INFORMATION
`DEVICE, CONTROL PROGRAM, STORAGE
`MEDIUM, BLOOD VESSEL SIMULATION
`SENSOR, AND LIVING ORGANISM
`INFORMATION MEASUREMENTDEVICE
`
`Mar. 19, 2003
`Sep. 2, 2003
`
`2003-075840
`2003-3 10624
`
`Publication Classification
`
`Ente C17 ccsscsssnsetseressetenivernevanseveeneee AGIB 5/02
`(SL)
`(52) US. Ch coccccscan cesssnssuasnuiunsnsoanisasnaeveseeee 600/502
`
`(75)
`
`Inventors: Tsukasa Kosuda, Matsumoto-shi(JP);
`Makoto Zakoji, Shiojiri-shi (JP);
`Ichiro Aoshima, Nagano-ken (JP);
`Yutaka Kawafune, Matsumoto-shi (JP);
`Norimitsu Baba, Shiojiri-shi (JP)
`
`Correspondence Address:
`SHINJYU GLOBAL IP COUNSELORS, LLP
`1233 20TH STREET, NW, SUITE700
`WASHINGTON, DC 20036-2680 (US)
`
`(73) Assignee: Seiko Epson Corporation, Tokyo (JP)
`
`(21) Appl. No.:
`
`10/793,419
`
`(22)
`
`Filed:
`
`Mar. 5, 2004
`
`(30)
`
`Foreign Application Priority Data
`
`Mar. 19, 2003
`
`(JP) veces2003-075839
`
`(57)
`
`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 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
`motion that affects the behavior of venous blood to the
`MPU. As a 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 component has
`been removed. The pulse rate is displayed on a liquid crystal
`display device.
`
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`Patent Application Publication Sep. 23, 2004 Sheet 1 of 117
`
`US 2004/0186387 Al
`
`AMOUNT OF CHANGE IN HEIGHT VS. ACCELERATION[¥(Ky? + Kz2)]
`(OPERATIONAL FREQUENCY2Hz)
`
` ACCELERATION[/(Ky?+Kz?)] oaS8
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`AMOUNT OF CHANGE IN HEIGHT[cm]
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`Patent Application Publication Sep. 23, 2004 Sheet 2 of 117
`
`US 2004/0186387 Al
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`Sep. 23, 2004 Sheet 3
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`Patent Application Publication Sep. 23,2004 Sheet 4 of 117
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`Patent Application Publication Sep. 23,2004 Sheet 5 of 117
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`US 2004/0186387 Al
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`Patent Application Publication Sep. 23, 2004 Sheet 6 of 117
`
`US 2004/0186387 Al
`
`ACCELERATION SENSOR
`(X-AXIS) OUTPUT
`
`[mV]
`AMPLITUDE
`
`TIME[s]
`
`007
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`Patent Application Publication Sep. 23,2004 Sheet 7 of 117
`
`US 2004/0186387 Al
`
` POWERSPECTRUM{mVrms]
`
`
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`eeel —
`——
`|ey=
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`Patent Application Publication Sep. 23, 2004 Sheet 8 of 117
`
`US 2004/0186387 Al
`
`Y-AXIS ACCELERATIONDATA(Ky)
`
`
`
`AMPLITUDE[mV}
`
`0
`
`8
`
`16
`
`TIME{s]
`
`24
`
`:
`
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`
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`Patent Application Publication Sep. 23, 2004 Sheet 9 of 117
`
`US 2004/0186387 Al
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`POWERSPECTRUM[Mvrms]
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`Fig. 9
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`Patent Application Publication Sep. 23,2004 Sheet 10 of 117
`
`US 2004/0186387 Al
`
`Z-AXIS ACCELERATION DATA (Kz)
`
`
`
`AMPLITUDE[mV]
`
`0
`
`8
`
`16
`TIMEfs}
`
`24
`
`32
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`Patent Application Publication
`
`Sep. 23, 2004 Sheet 11 of 117
`
`US 2004/0186387 Al
`
`
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`WNYLOsAdSY3MOd
`
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`
`FREQUENCY[Hz]
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`Fig. 11
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`Patent Application Publication Sep. 23,2004 Sheet 12 of 117
`
`US 2004/0186387 Al
`
`ACCELERATION SENSOR
`(Y,Z COMBINED) OUTPUT
`
`SS
`
`=L
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`Fig. 12
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`Patent Application Publication Sep. 23,2004 Sheet 13 of 117
`
`US 2004/0186387 Al
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`WNYLOAdSYAMOd
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`FREQUENCY(Hz)
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`Fig. 13
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`Patent Application Publication Sep. 23,2004 Sheet 14 of 117
`
`US 2004/0186387 Al
`
`SIMULATED LOW-FREQUENCY SIGNAL
`
`0
`
`8
`
`16
`
`TIME [s]
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`Patent Application Publication Sep. 23,2004 Sheet 15 of 117
`
`US 2004/0186387 Al
`
` POWER
`A
`SPECTRUM{mVrms]
`
`FREQUENCY[Hz]
`
`Fig. 15
`
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`Patent Application Publication Sep. 23,2004 Sheet 16 of 117
`
`US 2004/0186387 Al
`
`PULSE SENSOR OUTPUT
`
`SEL
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`a)
`
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`Fig. 16
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`

`Patent Application Publication Sep. 23,2004 Sheet 17 of 117
`
`US 2004/0186387 Al
`
`
`
`
`
`POWERSPECTRUM[mVrms]
`
`coke||i]o_o
`ftedaea roffE——_|= |
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`im= SS =
`|id
`==—— =Ht——|
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`
`FREQUENCY [Hz]
`
`Fig. 17
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`

`Patent Application Publication Sep. 23,2004 Sheet 18 of 117
`
`US 2004/0186387 Al
`
`OUTPUT AFTER SIGNAL PROCESSING(e(n))
`
`[mV]
`AMPLITUDE
`
`TIME [s]
`
`Fig. 18
`
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`Patent Application Publication Sep. 23,2004 Sheet 19 of 117
`
`US 2004/0186387 Al
`
`
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`Patent Application Publication Sep. 23, 2004 Sheet 20 of 117
`
`US 2004/0186387 Al
`
`LOW FREQUENCY NOT REMOVED
`
`[mV]
`AMPLITUDE
`
`Fig. 20
`
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`Patent Application Publication Sep. 23,2004 Sheet 21 of 117
`
`US 2004/0186387 Al
`
`
`
`WNYLOSdSYSMOd
`
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`
`FREQUENCY[Hz]
`
`Fig. 21
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`Patent Application Publication Sep. 23,2004 Sheet 22 of 117
`
`US 2004/0186387 Al
`
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`Patent Application Publication Sep. 23, 2004 Sheet 23 of 117
`
`US 2004/0186387 Al
`
`X-AXIS ACCELERATION DATA (Kx)
`
`[mV]
`AMPLITUDE
`
`0
`
`8
`
`16
`
`TIME{s]
`
`24
`
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`
`Fig. 23
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`Patent Application Publication Sep. 23,2004 Sheet 24 of 117
`
`US 2004/0186387 Al
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`
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`Fig. 24
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`Patent Application Publication Sep. 23,2004 Sheet 25 of 117
`
`US 2004/0186387 Al
`
`Y-AXIS ACCELERATION DATA(Ky)
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`Patent Application Publication Sep. 23, 2004 Sheet 26 of 117
`
`US 2004/0186387 Al
`
`
`
`POWERSPECTRUM
`
`[mVrms]
`
` |
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`Fig. 26
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`Patent Application Publication Sep. 23,2004 Sheet 27 of 117
`
`US 2004/0186387 Al
`
`Z-AXIS ACCELERATION DATA(Kz)
`
`
`
`AMPLITUDE[mV]
`
`TIME {s]
`
`Fig. 27
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`Patent Application Publication Sep. 23, 2004 Sheet 28 of 117
`
`US 2004/0186387 Al
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`Patent Application Publication Sep. 23,2004 Sheet 29 of 117
`
`US 2004/0186387 Al
`
`ACCELERATION DATA [V" (Kx? + Ky2+ Kz2)]
`
`
`
`AMPLITUDE[mV]
`
`o
`
`8
`
`16
`
`24
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`
`TIME [s]
`
`Fig. 29
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`Patent Application Publication Sep. 23,2004 Sheet 30 of 117
`
`US 2004/0186387 Al
`
`
`
`WNYLO3dSYAMOd
`
`[SwAW]
`
`FREQUENCY[Hz]
`
`Fig. 30
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`

`Patent Application Publication Sep. 23,2004 Sheet 31 of 117
`
`US 2004/0186387 Al
`
`DETECTED PULSE WAVE DATA
`
`
`
`AMPLITUDE[mV]
`
`0
`
`8
`
`16
`
`24
`
`32
`
`TIME [s]
`
`Fig. 31
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`

`Patent Application Publication Sep. 23,2004 Sheet 32 of 117
`
`US 2004/0186387 Al
`
`
`
`WNYLOAdSYAMOd
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`[StuAW]
`
`
`
`FREQUENCY[Hz]
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`Fig. 32
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`

`Patent Application Publication Sep. 23, 2004 Sheet 33 of 117
`
`US 2004/0186387 Al
`
`OUTPUT AFTER SIGNAL PROCESSING (e(n))
`
`
`
`AMPLITUDE[mV]
`
`0
`
`8
`
`16
`
`24
`
`a2
`
`TIME[s]
`
`Fig. 33
`
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`
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`
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`

`Patent Application Publication Sep. 23, 2004 Sheet 34 of 117
`
`US 2004/0186387 Al
`
`SPECTRUM[mVrms]
`POWER
`
`FREQUENCY[Hz]
`
`Fig. 34
`
`035
`
`FITBIT, Ex. 1027
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`
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`

`Patent Application Publication Sep. 23,2004 Sheet 35 of 117
`
`US 2004/0186387 Al
`
`SIXWA
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`

`Patent Application Publication Sep. 23, 2004 Sheet 36 of 117
`
`US 2004/0186387 Al
`
`DETECTED PULSE WAVE DATA
`
`
`
`AMPLITUDE[mVJ
`
`0
`
`8
`
`16
`
`24
`
`32
`
`TIME{s]
`
`Fig. 36
`
`037
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`FITBIT, Ex. 1027
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`

`Patent Application Publication Sep. 23,2004 Sheet 37 of 117
`
`US 2004/0186387 Al
`
`
`
`
`
`POWERSPECTRUM[mVrms]
`
`|
`ETT
`WUtl
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`—
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`FREQUENCY[Hz]
`
`Fig. 37
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`FITBIT, Ex. 1027
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`

`Patent Application Publication Sep. 23, 2004 Sheet 38 of 117
`
`US 2004/0186387 Al
`
`OUTPUT AFTER SIGNAL PROCESSING (e(n))
`
`
`
`AMPLITUDE[mV]
`
`0
`
`8
`
`16
`
`24
`
`32
`
`TIME[s]
`
`Fig. 38
`
`039
`
`FITBIT, Ex. 1027
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`039
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`FITBIT, Ex. 1027
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`

`

`Patent Application Publication Sep. 23,2004 Sheet 39 of 117
`
`US 2004/0186387 Al
`
`SPECTRUM[mVrms]
` POWER
`
`FREQUENCY[Hz]
`
`Fig. 39
`
`040
`
`FITBIT, Ex. 1027
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`
`FITBIT, Ex. 1027
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`

`

`Patent Application Publication Sep. 23
`
`’
`
`2004 Sheet 40 of 117
`
`US 2004/0186387 Al
`
`
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`
`

`

`Patent Application Publication Sep. 23
`
`’
`
`2004
`
`Sh
`
`eet 41 of 117
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`Patent Application Publication Sep. 23, 2004 Sheet 42 of 117
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`US 2004/0186387 Al
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`Patent Application Publication Sep. 23, 2004 Sheet 43 of 117
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`Patent Application Publication Sep. 23, 2004 Sheet 44 of 117
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`Patent Application Publication Sep. 23, 2004 Sheet 46 of 117
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`Patent Application Publication Sep. 23, 2004 Sheet 47 of 117
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`Patent Application Publication Sep. 23, 2004 Sheet 48 of 117
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`Patent Application Publication Sep. 23, 2004 Sheet 49 of 117
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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 51 of 117
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`US 2004/0186387 Al
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`Patent Application Publication Sep. 23,2004 Sheet 52 of 117
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`Patent Application Publication Sep. 23,2004 Sheet 53 of 117
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`Patent Application Publication Sep. 23,2004 Sheet 54 of 117
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`Patent Application Publication Sep. 23,2004 Sheet 55 of 117
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`Patent Application Publication Sep. 23, 2004 Sheet 56 of 117
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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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`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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`US 2004/0186387 Al
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`Patent Application Publication Sep. 23, 2004 Sheet 62 of 117
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`US 2004/0186387 Al
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`Patent Application Publication Sep. 23, 2004 Sheet 63 of 117
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`Patent Application Publication Sep. 23, 2004 Sheet 64 of 117
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`US 2004/0186387 Al
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`Patent Application Publication Sep. 23,2004 Sheet 65 of 117
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`US 2004/0186387 Al
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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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`Patent Application Publication Sep. 23,2004 Sheet 70 of 117
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`US 2004/0186387 Al
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`Patent Application Publication Sep. 23,2004 Sheet 71 of 117
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`US 2004/0186387 Al
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`Patent Application Publication Sep. 23,2004 Sheet 72 of 117
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`Patent Application Publication Sep. 23,2004 Sheet 73 of 117
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`US 2004/0186387 Al
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`Patent Application Publication Sep. 23,2004 Sheet 74 of 117
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`US 2004/0186387 Al
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`Patent Application Publication Sep. 23, 2004 Sheet 75 of 117
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`Patent Application Publication Sep. 23, 2004 Sheet 76 of 117
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`US 2004/0186387 Al
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`Patent Application Publication Sep. 23,2004 Sheet 77 of 117
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`US 2004/0186387 Al
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`Patent Application Publication Sep. 23, 2004 Sheet 78 of 117
`
`US 2004/0186387 Al
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`Patent Application Publication Sep. 23,2004 Sheet 79 of 117
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`US 2004/0186387 Al
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`Patent Application Publication Sep. 23, 2004 Sheet 80 of 117
`
`US 2004/0186387 Al
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`Patent Application Publication Sep. 23,2004 Sheet 81 of 117
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`US 2004/0186387 Al
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`Patent Application Publication Sep. 23, 2004 Sheet 82 of 117
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`US 2004/0186387 Al
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`Patent Application Publication Sep. 23, 2004 Sheet 83 of 117
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`US 2004/0186387 Al
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`Patent Application Publication Sep. 23, 2004 Sheet 84 of 117
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`US 2004/0186387 Al
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`Patent Application Publication Sep. 23,2004 Sheet 85 of 117
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`Patent Application Publication Sep. 23, 2004 Sheet 86 of 117
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`Patent Application Publication Sep. 23,2004 Sheet 87 of 117
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`Patent Application Publication Sep. 23, 2004 Sheet 88 of 117
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`Patent Application Publication Sep. 23,2004 Sheet 89 of 117
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`US 2004/0186387 Al
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`Patent Application Publication Sep. 23, 2004 Sheet 91 of 117
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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 98 of 117
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`Patent Application Publication Sep. 23,2004 Sheet 99 of 117
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`Patent Application Publication Sep. 23, 2004 Sheet 104 of 117 US 2004/0186387 Al
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`Patent Application Publication Sep. 23, 2004 Sheet 106 of 117 US 2004/0186387 Al
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`Patent Application Publication Sep. 23, 2004 Sheet 110 of 117
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`US 2004/0186387 Al
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`Patent Application Publication Sep. 23,2004 Sheet 111 of 117
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`Patent Application Publication Sep. 23, 2004 Sheet 112 of 117
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`Patent Application Publication Sep. 23, 2004 Sheet 113 of 117
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`Patent Application
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`Sep. 23, 2004 Sheet 117 of 117
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`US 2004/0186387 Al
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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
`INFORMATION MEASUREMENTDEVICE
`
`BACKGROUNDOF 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 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.
`
`[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 correspondingto 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 powerare 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 componentsare 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.
`
`SUMMARY OF THE INVENTION
`
`[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 removesaid body motion component contained in
`the pulse wave detection signal. The living organism infor-
`mation measuring section is configu