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(1)情報処理学会研究報告 IPSJ SIG Technical Report. Vol.2013-HCI-155 No.12 Vol.2013-UBI-40 No.12 2013/11/6. ΢ΣΞϥϒϧՃ଎౓ηϯαΛར༻ͨ࢟͠੎ධՁͷ‫ݕ‬౼ ৿ɹ༞അ1,a). ӿງɹ༏1,b). ؒ੉ɹ݈ೋ1,c). ֓ཁɿෆྑ࢟੎Ͱͷੜ‫׆‬͸ɼ‫ڽݞ‬Γ΍‫ے‬೑ͷ௧ΈͳͲͷ਎ମతѱӨ‫ڹ‬Λൃੜͤ͞Δɽͦ͜Ͱզʑ͸ɼҰ೔Λ ௨ͯ͡ෛՙͷແ͍࢟੎Ͱੜ‫ͯ͠׆‬ɼ‫͜ݞ‬ΓͳͲͷෆշͳ঱ঢ়Λ‫͡ײ‬Δ͜ͱແ͘Ұ೔Λऴ͑ΒΕΔΑ͏ʹα ϙʔτ͢ΔγεςϜΛ։ൃ͍ͯ͠ΔɽຊγεςϜ͸ɼෆྑ࢟੎Λͱͬͨ࣌ʹ‫ࠂܯ‬Λൃ͠ɼѱԽ౓߹͍ʹैͬ ͯ‫ࠂܯ‬ͷ‫౓ڧ‬ΛมԽͤ͞Δ͜ͱͰɼར༻ऀ͕Α͍࢟੎ʹ͍ۙͮͨ͜ͱΛཧղ͠ɼࣗ਎Ͱྑ͍࢟੎ʹमਖ਼Ͱ ͖ΔΑ͏ʹαϙʔτ͢ΔɽຊߘͰ͸ɼ࢟੎ධՁ෦෼ʹ͍ͭͯ‫͢ٴݴ‬Δɽਓͷ࢟੎͸಄෦ɼഎ෦ɼࠊ෦ͷ܏ ͖ͷ૊Έ߹ΘͤͰද‫͖Ͱݱ‬ΔͱԾఆ͠ɼ֤෦ͷ܏͖ͷ૊Έ߹Θ͔ͤΒ࢟੎Λ఺਺Խͨ͠ɽट͕ਨΕͨ࢟੎ɼ લ܏࢟੎ɼ൓Γࠊͷࡾͭͷෆྑ࢟੎Λର৅ͱ͠ɼྑ͍࢟੎ʹۙͮ͘΄ͲධՁ͕ྑ͘ͳΔ͜ͱΛ֬ೝͨ͠ɽ Ωʔϫʔυɿ΢ΣΞϥϒϧՃ଎౓ηϯα, ࢟੎ධՁ. Human Posture Evaluation with Wearable Accelerometer Mori Yuma1,a). Enokibori Yu1,b). Mase Kenji1,c). Abstract: Bad postures yield abnormal load for muscles, and then the load become causes of various pains, such as stiff shoulder. To prevent occurrences of such pains, we are developing a wearable system to assist people in keeping good posture. In this paper, we focus into the sensing and scoring functions of the system. Our prototype uses the head, back, and waist leans measured with three wearable accelerometers to generate posture scores. The scores showed improvements and good correlations in almost cases when subjects changed their posture from bad ones to good ones, in our evaluations. Keywords: wearable accelerometer, posture evaluation. 1. ͸͡Ίʹ ෆྑ࢟੎͸‫ڽݞ‬Γ΍‫ے‬೑ͷ௧ΈͳͲͷ਎ମతѱӨ‫ڹ‬Λൃ. ΔͨΊɼར༻ऀ͸਎ମಈ࡞ʹෆࣗ༝Λ‫͏·ͯ͠͡ײ‬ɽ ‫۩ث‬Λ࢖Θͣɼ਎ମಈ࡞ͷ੍‫ݶ‬Λड͚ͳ͍࢟੎վળํ๏ ͱͯ͠ɼྑ࢟੎ΛऔΔ͜ͱΛৗʹҙࣝ͠ଓ͚Δͱ͍͏ํ๏. ੜͤ͞Δ. ಄෦͕લ܏͢Δͱɼૐ๧‫*ے‬1 ʹෛՙ͕͔͔Γɼ‫ݞ‬. ͕͋Δɽ͔͠͠ɼৗʹྑ࢟੎Λҙࣝ͢Δ͜ͱ͸ࠔ೉Ͱ͋Δɽ. ‫ڽ‬Γʹൃల͢Δɽഎ෦͕લ܏͠ɼॴҦೣഎʹͳΔͱɼ੸ப. ྫ͑͹ɼεϚʔτϑΥϯͷը໘Λ‫͍ͯݟ‬Δͱ͖͸ͦͷ಺༰. ‫*ےཱى‬2 ʹෛՙ͕͔͔Γɼࠊ௧ʹൃల͢Δɽ. ʹҙ͕ࣝूத͠΍͘͢ɼ࢟੎ʹରͯ͠ͷҙ͕ࣝബΕΔɽ. ͜ͷ໰୊Λղܾ͢Δํ๏ͱͯ͠ɼ‫ڲ‬ਖ਼ԼணͳͲͷ‫ڲ‬ਖ਼ࢧ. ͦ͜Ͱզʑ͸ɼ࢟੎͕ѱԽͨ͠ࡍʹྑ࢟੎Λҙࣝͤ͞ɼ. ԉ‫۩ث‬Λ༻͍ͯෆྑ࢟੎Λվળ͢Δํ๏͕ී‫͍ͯ͠ٴ‬Δ.. ࣗ਎Ͱ࢟੎Λमਖ਼͢ΔͨΊͷαϙʔτγεςϜΛఏҊ͢. ͔͠͠‫ڲ‬ਖ਼Լண͸਎ମಈ࡞Λ੍‫͢ݶ‬Δ͜ͱͰ࢟੎Λվળ͢. ΔɽຊγεςϜͰ͸ɼ΢ΣΞϥϒϧՃ଎౓ηϯαΛར༻͢. 1. Δɽ΢ΣΞϥϒϧՃ଎౓ηϯαΛ಄෦ɼഎ෦ɼࠊ෦ʹઃஔ. a) b) c) *1 *2. ໊‫ݹ‬԰େֶɹେֶӃ৘ใՊֶ‫ڀݚ‬Պ Nagoya University, Graduate School of Information Science [email protected] [email protected] [email protected] टɼ‫ݞ‬ɼഎ෦্෦ͷಈ࡞Λ͢Δ‫ے‬೑ɽ಄෦Λࢧ͑Δ‫ػ‬ೳΛ࣋ͭɽ എ෦͔Βࠊ෦ʹ͔͚ͯଘࡏ͍ͯ͠Δ‫ے‬೑ɽ਎ମશମΛࢧ͑Δ‫ػ‬ೳ Λ࣋ͭɽ. ⓒ 2013 Information Processing Society of Japan. ͢Δ͜ͱʹΑͬͯɼར༻ऀͷ֤෦ͷ܏͖Λऔಘ͠ɼྑ࢟੎ ͔ΒͷѱԽ౓߹͍Λਪఆɾ఺਺Խ͢ΔɽຊγεςϜ͸ෆྑ ࢟੎Λͱͬͨ࣌ʹ‫ࠂܯ‬Λൃ͠ɼѱԽ౓߹͍ʹैͬͯ‫ࠂܯ‬ͷ ‫౓ڧ‬ΛมԽͤ͞Δ͜ͱͰɼར༻ऀ͸ྑ࢟੎ʹ͍ۙͮͨ͜ͱ Λཧղ͠ɼࣗ਎Ͱྑ࢟੎ʹमਖ਼Ͱ͖ΔΑ͏ʹαϙʔτ͢Δ.. 1.

(2) 情報処理学会研究報告 IPSJ SIG Technical Report. Vol.2013-HCI-155 No.12 Vol.2013-UBI-40 No.12 2013/11/6. ͜ΕʹΑΓຊγεςϜ͸ར༻ऀΛҰ೔Λ௨ͯ͡༨෼ͳෛՙ ͕͔͔Δ͜ͱͳ͘ੜ‫͠׆‬ɼ‫ڽݞ‬ΓͳͲͷෆշͳ঱ঢ়Λ‫͡ײ‬ Δ͜ͱແ̍͘೔Λऴ͑ΒΕΔΑ͏ʹࢧԉ͢Δɽ ຊߘͰ͸ɺఏҊγεςϜͷ࢟੎ධՁ෦෼ʹ͍ͭͯ‫͢ٴݴ‬ Δ. 2 ষͰ͸͜Ε·ͰʹߦΘΕ͖ͯͨ࢟੎ʹؔ͢Δ‫ڀݚ‬Λ. . ɹ. औΓ͋͛Δ. 4 ষͰ͸ຊߘͰѻ͏ෆྑ࢟੎ʹ͍ͭͯઆ໌͢. ਤ 1. Δ. 3 ষͰ͸ຊγεςϜͷ࢟੎ධՁํ๏ʹ͍ͭͯ‫͢ٴݴ‬Δ..  

(3) . ਖ਼ৗ࢟੎ͱෆྑ࢟੎. Fig. 1 Good and bad postures (ମ಺ͷ੺ઢ͸੸பͷ‫ܗ‬ঢ়). 5 ষͰ͸ຊγεςϜͷ࣮૷ʹ͍ͭͯઆ໌͢Δ. 6 ষͰ͸࢟ ੎ධՁ࣮‫͍ͯͭʹݧ‬આ໌͢Δ. 7 ষͰຊߘͷ·ͱΊͱࠓ‫ޙ‬ ͷ՝୊ʹ͍ͭͯड़΂Δ. ɹɹ. 2. ؔ࿈‫ڀݚ‬ ࢟੎ʹؔ͢Δ‫ڀݚ‬͸௕೥͞Ε͍ͯΔ. ࢟੎ΛσʔλԽ͢ Δखஈͱͯ͠͸ը૾ॲཧ΍΢ΣΞϥϒϧՃ଎౓ηϯαΛར ༻͢Δख๏͕ଘࡏ͢Δɽ. τϨε͕ՃΘΓർΕ΍͍͢ɽർΕΔͱόϥϯε͕͞Βʹ͘ ͣΕɼ࢟੎͸ͳ͓Ұ૚ѱ͘ͳΔͱ͍͏ѱ॥‫ͳʹ؀‬ΔɽർΕ ͸શ਎ʹ͘Δ͚ͩͰͳ͘ɼಈ͖΍ετϨεͷଟ͍ܱ௣΍ࠊ ௣ͷ෦෼ʹಛʹ‫͘ڧ‬ಇ͘ͷͰɼ‫͜ݞ‬Γͱ͔ࠊ௧ͷେ͖͍‫ݪ‬ ҼʹͳΔʯͱड़΂͍ͯΔ [6]ɽ ຊߘͰ͸ෆྑ࢟੎ͱͯ͠લ܏࢟੎ɼ൓ΓࠊɼटਨΕ࢟੎. ը૾ॲཧΛར༻ͨ͠ํ๏ͱͯ͠ɼNooritawati Βͷ‫ڀݚ‬. ͷ 3 ࢟੎Λѻ͏ (ਤ 1). લ܏࢟੎͸ࠎ൫ɼ‫ڳ‬௣͕લ܏ͨ͠. ΍ Soumitry Βͷ‫͛ڍ͕ڀݚ‬ΒΕΔɽNooritawati Β͸ओ. ࢟੎Ͱ͋Δɽଆํ͔Β‫ݟ‬Δͱ਎ମ͕શମతʹલ܏͍ͯ͠Δ. ੒෼෼ੳ๏Λ༻͍ͯਓؒͷ਎ମγϧΤοτ͔Βಛ௃Λநग़. Α͏ʹ‫͑ݟ‬Δɽ಄෦Λࢧ͑ΔͨΊʹटपΓͷ‫ے‬೑ʹෛՙ͕. ͠ɼଟ૚஌֮Λ༻͍ͯɼ‫ݻ‬༗ۭؒมԽͷଟ༷ͳ૊߹ͤʹ‫ج‬. ͔͔Δɽલ܏࢟੎͸ೣഎ࣌ʹΑ͘ൃੜ͢Δ.. ͍ͮͯ࢟੎Λ෼ྨͨ͠ [1]. Soumitry Β͸࢟੎ղੳ༻ͷϨ. ൓Γࠊ࢟੎͸ࠎ൫͕લ܏͠ɼࠊ௣ɼ‫ڳ‬௣͕‫࢟ͨ͠܏ޙ‬੎. ϯδΧϝϥΛ༻͍ͯɼ࢓ࣄதͷཱҐঢ়ଶɼ࠲Ґঢ়ଶɼ্൒. Ͱ͋Δ. ಛʹࠊ௣͕େ͖͘‫͓ͯ͠܏ޙ‬Γɼ੸ப‫ʹےཱى‬ෛ. ਎͕‫͍͕ͯͬۂ‬Δঢ়ଶɼഝ͍ͬͯΔঢ়ଶͷ 4 ঢ়ଶͷࣝผΛ. ՙ͕͔͔Δɽ൓Γࠊ࢟੎͸உੑΑΓ΋ঁੑͷํ͕൓Γࠊʹ. ͨ͠ [2].. ͳΓ΍͍͢ɽ͜Ε͸‫ڳ‬෦΍ώʔϧͳͲͷཤ෺ʹΑͬͯॏ৺. Ճ଎౓ηϯαΛར༻ͨ͠ํ๏ͱͯ͠ɼChang Βͷ‫ڀݚ‬΍ ֽ‫ݪ‬Βͷ‫ڀݚ‬ɼ૔୔Βͷ‫͛ڍ͕ڀݚ‬ΒΕΔɽChang Β͸Ճ. Ґஔ͕લํʹͳΓ΍͍͔͢ΒͰ͋Δ. टਨΕ࢟੎͸ܱ௣ͷΈ͕લ܏͍ͯ͠Δ࢟੎Ͱ͋Δ. ಄෦. ଎౓ηϯαΛࠊ෦ʹऔΓ෇͚Δ͜ͱͰෆྑ࢟੎Λ‫ײ‬஌͠ɼ. Λࢧ͑ΔͨΊʹૐ๧‫ʹے‬େ͖ͳෛՙ͕͔͔ΔɽεϚʔτ. Ճ଎౓ηϯαͷৼಈΛར༻ͯ͠ɼར༻ऀʹ࢟੎΁ͷҙࣝΛ. ϑΥϯར༻ͷ૿Ճʹ൐͍ɼटਨΕ࢟੎ʹͳΔਓ͕૿Ճͯ͠. ଅ͢γεςϜΛ։ൃͨ͠ [3]. ֽ‫ݪ‬Β͸าߦ࣌ʹ࢟੎͕ͣ͘. ͍Δ.. Ε΍͍͢͜ͱʹண໨͠ɼ‫ܞ‬ଳ୺຤ʹ಺ଂ͞Ε͍ͯΔՃ଎౓ ηϯαΛར༻ͯ͠าߦ෼ੳΛ͢Δ͜ͱͰɼྑ࢟੎ͰาߦͰ ͖ΔΑ͏ࢧԉ͢ΔγεςϜΛ։ൃͨ͠ [4]. ૔୔Β͸Ճ଎౓. 4. ࢟੎ධՁํ๏ͷ‫ݕ‬౼ 4.1 ηϯαઃஔՕॴ‫ݕ‬౼. ηϯαͷ૷ண৔ॴΛࣗಈతʹ൑ผ͠ɼͦΕʹԠͯ͡Ξϧΰ. ηϯαͷઃஔՕॴΛ਎ମͷ಄෦ɼഎ෦ɼࠊ෦ͷ 3 Օॴͱ. ϦζϜΛಈతʹมԽͤ͞Δ͜ͱʹΑΓՃ଎౓ηϯα 1 ‫ݸ‬ͷ. ͨ͠ɽҰൠʹਓؒͷ਎ମʹ͓͍ͯɼܱ௣΍ࠊ௣͸۶‫͠ۂ‬΍. ΈͰ࢟੎ਪఆΛͨ͠ [5].. ͘͢ɼ‫ڳ‬௣্෦΍ઋ௣͸۶‫ݴͱ͍͘ʹ͠ۂ‬ΘΕ͍ͯΔ [7]ɽ. ը૾ॲཧΛར༻ͨ͠ํ๏͸ɼਓ͕ؒҰఆۭؒ಺ʹཹ·Δ. ۶‫͍͘ʹ͠ۂ‬ՕॴΛ߶ମͱͯ͠ଊ͑Δͱɼਓؒͷ਎ମ͸߶. ͱ͖͸༗ޮͰ͋Δɽ͔͠͠೔ৗੜ‫׆‬தͷߦಈΛऔಘ͢Δͷ. ମͷ࿈݁ͱΈͳͤΔɽ಄֖ࠎɼ‫ڳ‬௣ɼઋ௣͸߶ମͱΈͳͤ. ͸ࠔ೉Ͱ͋Δɽެ‫ڞ‬ͷ৔ॴͰར༻͢Δʹ͸ϓϥΠόγʔͷ. ΔͷͰɼͦΕͧΕͷ܏͖Λଌఆ͠૊߹ͤΔ͜ͱʹΑͬͯɼ. ໰୊΋ൃੜ͢ΔɽՃ଎౓ηϯαΛར༻ͨ͠ํ๏͸ɼ೔ৗੜ. ࢟੎Λද‫͖Ͱݱ‬ΔɼͱԾఆͨ͠ɽ߶ମ͸Ұ෦ͷ܏͖Λಋग़. ‫׆‬தͷ࢟੎ͷऔಘʹ༗ޮͰ͋Δɽ͔͠͠‫ط‬ଘ‫Ͱڀݚ‬͸࢟੎. ͢Ε͹શମͷ܏͖Λಋग़Ͱ͖Δɽ͕ͨͬͯ͠಄෦ɼഎ෦ɼ. Λਖ਼ͨ͢Ίʹ֤෦ҐΛͲͷΑ͏ʹमਖ਼͢Ε͹Α͍͔·Ͱ͸. ࠊ෦ͷ 3 ՕॴʹηϯαΛઃஔ͢Δɽ. ར༻ऀʹ௨஌͍ͯ͠ͳ͍ɽ. 3. ෆྑ࢟੎. 4.2 ࢟੎ͷ఺਺Խ ‫ج‬ຊ࢟੎࣌ͷ֤෦ͷ܏͖ͱɼର৅࢟੎࣌ͷ֤෦ͷ܏͖Λ. ຊઅͰ͸ɼఏҊख๏ͱ࣮૷ͷઆ໌ʹઌཱͪɼຊߘͰѻ͏. ൺֱ͠ɼ܏͖ͷࠩ෼Λ఺਺ͱͨ͠ɽηϯα಺ͷ x ࣠ͷਖ਼ํ. ෆྑ࢟੎ʹ͍ͭͯઆ໌͢Δɽෆྑ࢟੎ͱ͸ɼ‫ے‬೑ʹෛՙ͕. ޲Λ਎ମͷਖ਼໘ํ޲ɼy ࣠ͷਖ਼ํ޲Λ਎ମͷӈ޲͖ɺz ࣠. ͔͔͍ͬͯΔ࢟੎Ͱ͋Δɽ௕࣌ؒෆྑ࢟੎Ͱ͍Δͱ‫ڽݞ‬Γ. ͷਖ਼ํ޲ΛԖ௚্޲͖ʹͦΕͧΕऔΔ. ηϯα͕֯౓ θ ͩ. ΍ࠊ௧ͳͲʹൃల͢Δɽ໼໺͸ෆྑ࢟੎ʹ͍ͭͯɺʮࠎ֨. ͚ y ࣠Λத৺ͱͯ͠ӈͶ͡ͷํ޲ʹճసͨ͠ɼ͢ͳΘͪ਎. ͱ‫ے‬೑ͷόϥϯε͕ͣ͘Ε͍ͯΔͷͰɼ਎ମͷ֤෦෼ʹε. ମ͕֯౓ θ ͚ͩલ܏ͨ͠ͱ͢Δ (ਤ 2). θ ͸Ճ଎౓σʔλ. ⓒ 2013 Information Processing Society of Japan. 2.

(4) 情報処理学会研究報告 IPSJ SIG Technical Report. Vol.2013-HCI-155 No.12 Vol.2013-UBI-40 No.12 2013/11/6.  !  !

(5)  !. ਤ 4 ਤ 2. ηϯαऔ෇͚༻‫۩ث‬ͷ૷ண. Fig. 4 Sensors installation overview. ॏྗՃ଎౓ํ޲͔Β܏͖ͷಋग़. Fig. 2 lean calculated from gravity (G ͸ॏྗՃ଎౓). 6. ධՁ࣮‫ݧ‬ 6.1 ࣮‫֓ݧ‬ཁ 4 ষͰड़΂ͨ࢟੎ධՁํ๏͕ଥ౰Ͱ͋Δ͔Ͳ͏͔‫͠ূݕ‬ ͨɽ࢟੎͕‫ج‬ຊ࢟੎ʹۙͮ͘ʹͭΕͯɼείΞ͕ 0 ʹۙͮ ͚͹ଥ౰Ͱ͋Δͱ‫͑ݴ‬Δɽ ΢ΣΞϥϒϧՃ଎౓ηϯα͸Ճ଎౓Ϩϯδʶ 4Gɼαϯ ਤ 3. ϓϦϯάप೾਺ 50Hzɼαϯϓϧฏ‫ۉ‬ճ਺ 1 ճʹͦΕͧΕ. ηϯαऔ෇͚‫۩ث‬. Fig. 3 Equipments to attach sensors. Λ༻͍ͯɼࣜ 1 Ͱද͞ΕΔ.  ′ x1 θ = arctan z1′. ઃఆͨ͠ɽඃ‫ऀݧ‬͸உੑ 5 ໊ (ฏ‫ۉ‬೥ྸ 21.2 ʶ 0.8 ࡀɼ਎ ௕ 171cm ʶ 4cm) Ͱ͋Γɼ௨ৗੜ‫࣌׆‬ͷ࢟੎͸ଟগͷલ܏ ࢟੎Ͱ͋ͬͨɽ. (1). ‫ج‬ຊ࢟੎ͷ֤෦ͷՃ଎౓Λ‫ܭ‬ଌͨ͠‫ޙ‬ɼ֤ෆྑ࢟੎ͷ֤ ෦ͷՃ଎౓Λ‫ܭ‬ଌ͠ɼࣜ 2 ʹΑͬͯ఺਺Խͨ͠ɽ‫ج‬ຊ࢟੎. x′1 ɼz1′ ͸ͦΕͧΕऔಘͨ͠Ճ଎౓σʔλͷ x ࣠ɼz ࣠ͷ஋. ͷ֤෦ͷՃ଎౓͸ɼඃ‫ࠊʹऀݧ‬෦എ໘ɼ‫ڳ‬෦എ໘ɼ‫ޙ‬಄෦. Λද͢ɽ఺਺෇͚͸‫ج‬ຊͱͳΔ࢟੎ͱ‫ࡏݱ‬ͷ࢟੎ͷ֯౓ͷ. Λนʹ෇͘Α͏ʹཱͨͤͯ‫ܭ‬ଌͨ͠ɽ֎Ε஋Λআͨ͘Ίऔ. ࠩ෼ͱͨ͠ (ࣜ 2)ɽ. ಘͨ͠Ճ଎౓σʔλͷ͏্ͪҐԼҐ 10%ͷσʔλΛআ֎. 2 score = (θcur − θbase ) ∗ ∗ 100 π. (2). ͠ɼͦͷฏ‫ۉ‬Λ‫ج‬ຊ࢟੎ͷՃ଎౓σʔλͱͨ͠. ෆྑ࢟੎ ͸ 3 ষͰઆ໌ͨ͠ 3 ࢟੎Λର৅ͱͨ͠ɽඃ‫֤ʹऀݧ‬ෆྑ࢟. θcur ͸‫ࡏݱ‬ͷ࢟੎ͷ܏͖Λɼθbase ͸‫ج‬ຊͱͳΔ࢟੎ͷ܏. ੎͔Βঃʑʹ‫ج‬ຊ࢟੎ʹۙͮ͘Α͏ʹࢦࣔ͠ɼ֤෦ͷՃ଎. ͖ΛͦΕͧΕද͢ɽscore ͷൣғ͸-100 ͔Β 100 ͱͨ͠ɽ. ౓σʔλΛऔಘͨ͠ɽ. score ͷූ߸͔Β֤෦ͷ܏͖ํ޲͕൑அͰ͖Δɽ஋͕ਖ਼Ͱ ͋Δ৔߹͸લ܏ɼෛͰ͋Δ৔߹͸‫܏ޙ‬Λද͓ͯ͠Γɼ0 ʹ ͍ۙ΄Ͳ‫ج‬ຊͱͳΔ࢟੎ʹۙͮ͘ɽ. 5. ࣮૷ զʑ͸΢ΣΞϥϒϧՃ଎౓ηϯα TSND121 Λ༻͍࣮ͯ ૷ͨ͠ɽར༻खஈΛ΢ΣΞϥϒϧՃ଎౓ηϯαͱͨ͠ͷ. 6.2 ࣮‫݁ݧ‬Ռ ɹਤ 5 ͸֤ෆྑ࢟੎͔Β‫ج‬ຊ࢟੎΁ͷมԽʹର͢Δεί ΞͷάϥϑͰ͋Δ. ԣ࣠͸࢟੎Λද͓ͯ͠Γɼࠨʹ͍͘΄ Ͳෆྑ࢟੎ʹ͖ۙͮɼӈʹ͍͘΄Ͳ‫ج‬ຊ࢟੎ʹۙ͘ͳΔ. ॎ࣠͸είΞΛද͓ͯ͠Γɼ0 ʹ͍ۙ΄Ͳ‫ج‬ຊ࢟੎ʹ͍ۙ ͱ͍͑Δ.. ͸ɼ௕࣌ؒͷಈ࡞͕ՄೳͰ͋Γɼ೔ৗੜ‫׆‬தͰ‫ܧ‬ଓͯ͠ར. લ܏࢟੎͔Β‫ج‬ຊ࢟੎΁มԽͨ͠ࡍɼ‫ج‬ຊ࢟੎ʹۙͮ͘. ༻ՄೳͰ͋Δ͔ΒͰ͋Δɽ͕ͨͬͯ͠ਓͷ࢟੎Λ̍೔தऔ. ʹै͍ͬͯͣΕͷඃ‫͍͓ͯʹऀݧ‬΋಄෦ɼഎ෦ͷείΞ͕. ಘ͢Δͷʹ࠷దͰ͋Δͱ‫͑ݴ‬Δɽ. ྑ͘ͳͬͨ. ࠊ෦ͷείΞʹ͓͍ͯ͸ඃ‫ ऀݧ‬1ɼඃ‫ ऀݧ‬2. ಄෦ɼഎ෦ɼࠊ෦ʹ΢ΣΞϥϒϧՃ଎౓ηϯαΛऔ෇͚ ΔͨΊʹɼऔ෇͚༻ͷ‫۩ث‬Λར༻ͨ͠ (ਤ 3)ɽऔ෇͚༻ͷ. Ͱ͸ྑ͘ͳ͕ͬͨɼඃ‫ ऀݧ‬3ɼ4 Ͱ͸͋·ΓมԽ͕‫ݟ‬ΒΕ ͳ͔ͬͨ.. ‫ͯ͠ͱ۩ث‬ɼ಄෦ʹ͸๧ࢠɼഎ෦ʹ͸࠯ࠎαϙʔλɼࠊ෦. ൓Γࠊ࢟੎͔Β‫ج‬ຊ࢟੎΁มԽͰ͸ɼഎ෦ͷείΞ͕. ʹ͸ηϯαϗϧμΛͦΕͧΕར༻ͨ͠ɽηϯαऔ෇͚༻‫ث‬. Α͘ͳΔ܏޲͕‫ݟ‬ΒΕͨ. ࠊ෦ͷείΞʹ͍ͭͯ͸͋·Γ. ۩ʹ͸৳ॖੑΛ࣋ͨͤɼ૷ணͨ͠ਓͷ਎ମͷಈ͖Λ๦͛Δ. มԽ͕‫ݟ‬ΒΕͳ͔ͬͨ. ಄෦ͷείΞʹ͍ͭͯ͸ඃ‫ʹऀݧ‬. ͜ͱ͕ͳ͍Α͏ʹͨ͠ (ਤ 4)ɽ. ΑͬͯҟͳΔ݁Ռͱͳͬͨ. टਨΕ࢟੎͔Β‫ج‬ຊ࢟੎΁มԽͨ͠ࡍɼ͍ͣΕͷඃ‫ऀݧ‬. ⓒ 2013 Information Processing Society of Japan. 3.

(6) 情報処理学会研究報告 IPSJ SIG Technical Report. Vol.2013-HCI-155 No.12 Vol.2013-UBI-40 No.12 2013/11/6. . 2. 3. 4. 5. .  . ਤ 5.

(7) . .  .  . ֤ෆྑ࢟੎͔Β‫ج‬ຊ࢟੎΁ͷείΞͷมԽ. Fig. 5 Score overview during posture changes from bad posture to good posture. ʹ͓͍ͯ΋಄෦ͷείΞ͕ྑ͘ͳΓɼഎ෦ͷείΞ͕ྑ͘ ͳΔ܏޲͕‫ݟ‬ΒΕͨ. ࠊ෦ͷείΞʹ͍ͭͯ͸͋·ΓมԽ ͕‫ݟ‬ΒΕͳ͔ͬͨ.. ද 1. લ܏࢟੎͔Β‫ج‬ຊ࢟੎΁ͷมԽʹ͓͚Δ࢟੎ͷྑ͞ͱείΞ ͷ૬ؔ܎਺. Table 1 Correlations between posture changes and scores, from bending back posture to good posture ಄෦. എ෦. ඃ‫ ऀݧ‬1. 0.699. 0.786. 0.793. ඃ‫ ऀݧ‬2. 0.653. 0.866. -0.746. ඃ‫ ऀݧ‬3. 0.755. 0.860. 0.747. ඃ‫ ऀݧ‬4. 0.828. 0.879. -0.041. ඃ‫ ऀݧ‬5. 0.829. 0.849. 0.790. 6.3 ݁Ռߟ࡯ ࢟੎ͷྑ͞ͱείΞͷؔ࿈ੑΛௐ΂ΔͨΊʹ૬ؔ෼ੳΛ ͨ͠. ࢟੎ͷྑ͞Λऔಘ͢Δ͜ͱ͸ࠔ೉Ͱ͋Δ͕ɼඃ‫ऀݧ‬ ʹෆྑ࢟੎͔Βঃʑʹ‫ج‬ຊ࢟੎ʹ͚ۙͮΔΑ͏ࢦ͍ࣔͯ͠ ΔͷͰɼ࢟੎ͷྑ͞Λ࣌‫ྻܥ‬σʔλͰ୅༻ͨ͠ɽείΞʹ. ࠊ෦. ͍ͭͯ͸‫ٻ‬ΊͨείΞͷઈର஋Λར༻ͨ͠ɽ૬ؔ܎਺ʹ͸ εϐΞϚϯͷॱҐ૬ؔ܎਺Λར༻ͨ͠.. είΞͷ૬ؔ܎਺͸ਖ਼ͷ૬͕ؔೝΊΒΕͨ. ҰํͰࠊ෦ͷ. ද 1 ͸લ܏࢟੎͔Β‫ج‬ຊ࢟੎΁ͷมԽʹ͓͚Δ࢟੎ͷྑ. ࢟੎ͷྑ͞ͱείΞͷ૬ؔ܎਺͸ਖ਼ͷ૬͕ؔೝΊΒΕΔ৔. ͞ͱείΞͷ૬ؔ܎਺Ͱ͋Δ. ಄෦ɼഎ෦ͷ࢟੎ͷྑ͞ͱ. ߹ͱෛͷ૬͕ؔೝΊΒΕΔ৔߹͕͋ͬͨ. p ஋͸ɼඃ‫ऀݧ‬. 4 ͷલ܏࢟੎ʹ͓͚Δࠊ෦Ͱ 0.241 Ͱ͕͋ͬͨɼͦΕҎ֎ ⓒ 2013 Information Processing Society of Japan. 4.

(8) 情報処理学会研究報告 IPSJ SIG Technical Report ද 2. Vol.2013-HCI-155 No.12 Vol.2013-UBI-40 No.12 2013/11/6. ൓Γࠊ࢟੎͔Β‫ج‬ຊ࢟੎΁ͷมԽʹ͓͚Δ࢟੎ͷྑ͞ͱεί Ξͷ૬ؔ܎਺. ද 5. ൓Γࠊ࢟੎͔Β‫ج‬ຊ࢟੎΁มԽͨ͠ࡍͷείΞͷมԽྔ. Table 5 Amount of score changes from anterior pelvic tilt pos-. Table 2 Correlations between posture changes and scores,. ture to good posture. from anterior pelvic tilt posture to good posture. ද 3. ಄෦. എ෦. ಄෦. എ෦. ࠊ෦. ඃ‫ ऀݧ‬1. -3.595. 9.048. 4.17. ඃ‫ ऀݧ‬1. -0.786. 0.796. 0.785. ඃ‫ ऀݧ‬2. -0.840. -3.429. 7.908. ඃ‫ ऀݧ‬2. -0.475. -0.576. 0.751. ඃ‫ ऀݧ‬3. 0.269. -2.740. 3.972. ඃ‫ ऀݧ‬3. 0.735. -0.772. 0.781. ඃ‫ ऀݧ‬4. -11.036. -0.906. 1.664. ඃ‫ ऀݧ‬4. -0.899. -0.329. 0.335. ඃ‫ ऀݧ‬5. 35.007. 20.486. -1.571. ඃ‫ ऀݧ‬5. 0.888. 0.831. -0.572. टਨΕ࢟੎͔Β‫ج‬ຊ࢟੎΁ͷมԽʹ͓͚Δ࢟੎ͷྑ͞ͱεί Ξͷ૬ؔ܎਺. Table 3 Correlations between posture changes and scores,. ද 6. टਨΕ࢟੎͔Β‫ج‬ຊ࢟੎΁มԽͨ͠ࡍͷείΞͷมԽྔ. Table 6 Amount of score changes from hanging head posture to good posture ಄෦. എ෦. ࠊ෦. ඃ‫ ऀݧ‬1. 42.170. 3.033. 2.306. ඃ‫ ऀݧ‬2. 47.127. 4.664. -4.412. ඃ‫ ऀݧ‬3. 42.544. 1.216. 1.085. ඃ‫ ऀݧ‬4. 30.559. 11.218. -0.480. ඃ‫ ऀݧ‬5. 38.308. 6.966. -2.399. from hanging head posture to good posture ಄෦. എ෦. ࠊ෦. ඃ‫ ऀݧ‬1. 0.752. 0.448. 0.771. ඃ‫ ऀݧ‬2. 0.916. 0.851. -0.842. ඃ‫ ऀݧ‬3. 0.872. 0.765. 0.641. ඃ‫ ऀݧ‬4. 0.834. 0.865. 0.596. ඃ‫ ऀݧ‬5. 0.811. 0.824. -0.566. ࠊ෦. ҰํͰද 5 Ͱ͸ɼෛͷ૬ؔͱͳ͍ͬͯΔࢼߦͷείΞม ද 4 લ܏࢟੎͔Β‫ج‬ຊ࢟੎΁มԽͨ͠ࡍͷείΞͷมԽྔ. Խྔ͸ଞͷࢼߦͱൺֱͯ͠໌Β͔ʹ਺஋͕খ͍͞ͱ͸‫͑ݴ‬. Table 4 Amount of score changes from bending back posture. ͳ͍ɽ͜Ε͸‫ج‬ຊ࢟੎ͱͨ͠ීஈͷ࢟੎͕ͦ΋ͦ΋൓Γࠊ. to good posture. Ͱ͋ͬͨՄೳੑ͕ߟ͑ΒΕΔɽྫ͑͹ඃ‫ ऀݧ‬1ɼ4 ͸ද 5. ಄෦. എ෦. ࠊ෦. ͷ௨Γɼ൓Γࠊ࢟੎ͷঢ়ଶͰ΋‫ج‬ຊ࢟੎ͷঢ়ଶͰ΋΄΅ಉ. ඃ‫ ऀݧ‬1. 21.574. ඃ‫ ऀݧ‬2. 28.728. 28.363. 10.808. 21.104. ֯͡౓Λ͍ࣔͯ͠Δɽ·ͨಉ༷ͷ܏޲͸ඃ‫ ऀݧ‬2ɼ3 Ͱ΋. -1.889. ඃ‫ ऀݧ‬3. 4.217. 11.597. 3.064. ඃ‫ ऀݧ‬4. 16.627. 20.043. -1.261. Ξ͕΄΅ 0 Λ͓ࣔͯ͠Γɼ൓Γࠊͷ࢟੎ΛऔΕ͍ͯͳ͔ͬ. ඃ‫ ऀݧ‬5. 40.254. 23.181. 2.953. ͨՄೳੑ΋͋Δɽඃ‫ ऀݧ‬5 Ͱ͸ద੾ʹ஋͕औΕ͍ͯΔΑ͏. ೝΊΒΕΔ͕ɼ൴Βͷ৔߹͸൓Γࠊͷ࢟੎Ͱ΋֤෦ͷεί. ʹ‫͑ݟ‬Δɽ͔͠͠ͳ͕ΒηϯαͷઃஔՕॴ΍είΞͷࢉग़ Ͱ͸͍ͣΕ΋ 0.05 ະຬͰ͋ͬͨɽ ද 2 ͸൓Γࠊ࢟੎͔Β‫ج‬ຊ࢟੎΁ͷมԽʹ͓͚Δ࢟੎ͷ. ํ๏͕ద੾Ͱͳ͔ͬͨՄೳੑ΋࢒ΔͨΊɼຊ݅ͷ‫ݕ‬౼͸ࠓ ‫ޙ‬ͷ՝୊ͱ͢Δɽ. ྑ͞ͱείΞͷ૬ؔ܎਺Ͱ͋Δ. ֤෦ͷ૬ؔ܎਺͸ਖ਼ͷ૬. ଞͷࡉ͔ͳߟ࡯ͱͯ͠ɼҎԼͷ΋ͷΛ‫͓ͯ͘͠ࡌه‬ɽ಄. ͕ؔೝΊΒΕΔ৔߹ͱෛͷ૬͕ؔೝΊΒΕΔ৔߹͕͋ͬͨ.. ෦ͷείΞ͸Ұ౓‫ج‬४஋Λ௒͔͑ͯΒऩଋ͍ͯ͠Δɽ͜Ε. p ஋͸͢΂ͯ 0.05 ະຬͰ͋ͬͨɽ. ͸ෆྑ࢟੎Λ‫ج‬ຊ࢟੎ʹ͚͍ۙͮͯ͘ࡍʹɼഎ෦ɼࠊ෦ͱ. ද 3 ͸टਨΕ࢟੎͔Β‫ج‬ຊ࢟੎΁ͷมԽʹ͓͚Δ࢟੎ͷ. ͷόϥϯεΛऔΔͨΊʹ಄෦ͷҐஔΛௐ੔͍ͯ͠Δͱߟ͑. ྑ͞ͱείΞͷ૬ؔ܎਺Ͱ͋Δ. ಄෦ɼഎ෦ͷ࢟੎ͷྑ͞. ΒΕΔɽ‫ج‬ຊ࢟੎ʹ͓͍֤ͯ෦ͷείΞ͕ 0 ͱͳ͍ͬͯͳ. ͱείΞͷ૬ؔ܎਺͸ਖ਼ͷ૬͕ؔೝΊΒΕͨ. ҰํͰࠊ෦. ͍ɽ‫ج‬ຊ࢟੎Λҙࣝ͢ΔΑ͏ࢦ͕ࣔͨ͠ɼඃ‫ऀݧ‬ͷ೔ৗੜ. ͷ࢟੎ͷྑ͞ͱείΞͷ૬ؔ܎਺͸ਖ਼ͷ૬͕ؔೝΊΒΕΔ. ‫࣌׆‬ͷ࢟੎͕Ө‫ͨ͠ڹ‬΋ͷͱߟ͑ΒΕΔɽ. ৔߹ͱෛͷ૬͕ؔೝΊΒΕΔ৔߹͕͋ͬͨ. p ஋͸͢΂ͯ. 0.05 ະຬͰ͋ͬͨɽ ͜ΕΒΛείΞͷมԽྔͰ·ͱΊΔͱද 4ɼද 5ɼද 6. 7. ͓ΘΓʹ զʑ͸࢟੎͕ѱԽͨ͠ࡍʹྑ࢟੎Λҙࣝͤ͞ɼࣗ਎Ͱ࢟. ͱͳΔɽ ෛͷ૬͕ؔೝΊΒΕͨࢼߦΛࣼମͰද‫ͨ͠ه‬ɽ. ੎Λमਖ਼Ͱ͖ΔΑ͏ʹ͢ΔͨΊͷαϙʔτγεςϜΛఏҊ. ද 4ɼද 6 ͔Βલ܏࢟੎ͱटਨΕ࢟੎͔Β‫ج‬ຊ࢟੎ʹมԽ. ͠ɼͦͷ࢟੎ධՁ෦෼ʹ͍ͭͯઆ໌ͨ͠. ར༻ऀͷ಄෦ɼ. ͨ͠৔߹ʹ͸ɼෛͷ૬ؔͱͳ͍ͬͯͨࢼߦͷείΞมԽྔ. എ෦ɼࠊ෦ͷ 3 ՕॴͷՃ଎౓͔Β֤෦ͷ܏͖Λಋग़͠ɼ࢟. ͕ଞͷมԽྔͱൺ΂ͯൺֱతখ͍͞ɽΑͬͯόϥϯεΛऔ. ੎ͷѱԽ౓߹͍Λ఺਺Խͨ͠. ධՁ࣮‫ݧ‬Λߦ͍ɼલ܏࢟੎ɼ. ΔͳͲͷߦҝʹΑ֤ͬͯ෦ͷ֯౓͕গྔ͚ͩมԽͨ͠΋ͷ. टਨΕ࢟੎ʹ͓͍ͯ‫ج‬ຊ࢟੎ʹۙͮ͘ͱ͖ͷείΞͷৼ෣. ͩͱߟ͑ΒΕΔɽ͕ͨͬͯ͠ෛͷ૬ؔͱͳ͍ͬͯΔ͕ɼӨ. ͍Λ֬ೝͨ͠ɽલ܏࢟੎ͱटਨΕ࢟੎͔Βͷ࢟੎มԽʹؔ. ‫ڹ‬͸গͳ͍ͱߟ͑ΒΕΔɽ. ͯ͠͸ɼ͢΂ͯͷࢼߦʹ͓͍ͯ‫ج‬ຊ࢟੎ʹۙͮ͘΄Ͳεί. ⓒ 2013 Information Processing Society of Japan. 5.

(9) 情報処理学会研究報告 IPSJ SIG Technical Report. Vol.2013-HCI-155 No.12 Vol.2013-UBI-40 No.12 2013/11/6. Ξ͕ྑ͘ͳΔ͜ͱΛ֬ೝͨ͠ɽҰํͰ൓Γࠊ࢟੎͔Βͷม ԽͰ͸ 1 ໊ͷΈͰ໌֬ͳείΞͷվળ͕֬ೝͰ͖͕ͨɼଞ ͷ 4 ໊Ͱ͸໌֬ʹείΞ͕վળͨ͠ͷ͸֬ೝͰ͖ͳ͔ͬ ͨɽͦͷ‫ݪ‬Ҽ͸ඃ‫͕ऀݧ‬ద੾ͳ࢟੎ΛऔΕͳ͔ͬͨ͜ͱɼ ηϯαͷઃஔՕॴ΍είΞͷࢉग़ํ๏͕ෆద੾Ͱ͋ͬͨ͜ ͱͳͲ͕ߟ͑ΒΕΔɽຊ݅͸ࠓ‫ޙ‬ͷ՝୊ͱ͢Δɽ ·ͨɼධՁ࣮‫Ͱݧ‬͸ඃ‫ऀݧ‬ͷ೔ৗੜ‫࣌׆‬ͷ࢟੎͕લ܏࢟ ੎ΑΓͰ͋ͬͨ͜ͱ͔Βɼ೔ৗੜ‫࣌׆‬ͷ࢟੎͕ྑ࢟੎Ͱ͋ Δ৔߹΍ͦͷଞͷෆྑ࢟੎Ͱ͋Δ৔߹ʹ͍ͭͯ΋࣮‫͢ݧ‬Δ ඞཁ͕͋Δɽ ँࣙ ຊ‫ڀݚ‬͸ʮ஌ͷ‫͍ͪ͋఺ڌ‬ʯॏ఺‫ڀݚ‬ϓϩδΣΫ τͷࢧԉʹΑΔɽ ࢀߟจ‫ݙ‬ [1]. [2]. [3]. [4]. [5]. [6] [7]. Nooritawati Md Tahir, Aini Hussain, Salina Abdul Samad, and Hafizah Husain. Pca-based human posture classification. Jurnal Teknologi, 2007. Soumitry J. Ray and Jochen Teizer. Real-time construction worker posture analysis for ergonomics training. Advanced Engineering Informatics, Vol. 26, No. 2, pp. 439– 455, 2012. Chang Andrew Robert (US) and et al. System and method of biomechanical posture detection and feedback, January 2013. ֽ‫ݪ‬༟େ, ਗ਼ਫ༟‫ج‬, ࡾ޷݈จ, ٢Ӭ౒, ೖߐӳ࢚. εϚʔτ ϑΥϯΛ༻͍ͨาߦಈ࡞վળπʔϧͷ։ൃ. ৘ใॲཧֶձ ‫ڀݚ‬ใࠂ. UBI, [ϢϏΩλείϯϐϡʔςΟϯάγεςϜ], Vol. 2011, No. 7, pp. 1–8, nov 2011. ૔୔ԝ, ઒‫ܓݪ‬ത, ৿઒ത೭, ੨ࢁ༑‫ل‬. ηϯα૷ண৔ॴΛ ߟྀͨ͠ 3 ࣠Ճ଎౓ηϯαΛ༻͍ͨ࢟੎ਪఆख๏ (σʔλ ղੳɾ‫)ࡧݕ‬. ৘ใॲཧֶձ‫ڀݚ‬ใࠂ. UBI, [ϢϏΩλεί ϯϐϡʔςΟϯάγεςϜ], Vol. 2006, No. 54, pp. 15–22, may 2006. ໼໺Ұ࿠ʢฤʣ. ࢟੎ͱ݈߁ : ͔Βͩͷߏ͑ͱ৺ͷ΋ͪํ. ࢟੎‫ॴڀݚ‬, 1996. ‫ڮ‬ຊ༗ࢠ, ਫଜ (‫ٱ‬೮) ਅ༝ඒ. ‫ڳ‬௣͓Αͼࠊ௣ՄಈੑͷՃ ྸมԽ. ମҭֶ‫ڀݚ‬, Vol. 55, No. 2, pp. 333–342, dec 2010.. ⓒ 2013 Information Processing Society of Japan. 6.

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Fig. 1 Good and bad postures ( ମ಺ͷ੺ઢ͸੸பͷܗঢ় ) τϨε͕ՃΘΓർΕ΍͍͢ɽർΕΔͱόϥϯε͕͞Βʹ͘ ͣΕɼ࢟੎͸ͳ͓Ұ૚ѱ͘ͳΔͱ͍͏ѱ॥؀ʹͳΔɽർΕ ͸શ਎ʹ͘Δ͚ͩͰͳ͘ɼಈ͖΍ετϨεͷଟ͍ܱ௣΍ࠊ ௣ͷ෦෼ʹಛʹڧ͘ಇ͘ͷͰɼݞ͜Γͱ͔ࠊ௧ͷେ͖͍ݪ ҼʹͳΔʯͱड़΂͍ͯΔ [6] ɽ ຊߘͰ͸ෆྑ࢟੎ͱͯ͠લ܏࢟੎ɼ൓ΓࠊɼटਨΕ࢟੎ ͷ 3 ࢟੎Λѻ͏ ( ਤ 1 )
Fig. 3 Equipments to attach sensors Λ༻͍ͯɼࣜ 1 Ͱද͞ΕΔ . θ = arctan  x ′ 1 z ′ 1  (1) x ′ 1 ɼ z ′ 1 ͸ͦΕͧΕऔಘͨ͠Ճ଎౓σʔλͷ x ࣠ɼ z ࣠ͷ஋ Λද͢ɽ఺਺෇͚͸جຊͱͳΔ࢟੎ͱݱࡏͷ࢟੎ͷ֯౓ͷ ࠩ෼ͱͨ͠ ( ࣜ 2) ɽ
Fig. 5 Score overview during posture changes from bad posture to good posture
Table 2 Correlations between posture changes and scores, from anterior pelvic tilt posture to good posture

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