picoRing mouse: 超低電力な指輪型無線マウス

Youtube: https://www.youtube.com/watch?v=7RazVNMx0Ms
Paper: https://arxiv.org/abs/2504.03253 (accepted at ACM UIST 2025)

Transcript

1. 
   ௒௿ిྗͳࢦྠܕແઢϚ΢ε
   ߴڮ྄ʢ౦ژେֶɹ઒ݪݚڀࣨɹಛ೚ॿڭʣ
   -J
   :JGBOʢ౦ژେֶʣ෱ຊ
   խ࿕ʢ.JDSPTPGUʣ.PIBNFE
   ,BSJʢ1SJODFUPOʣ
   ࢁຊ
   ӳ߉ʢ౦ژେֶʣ໺ా
   ૱ਓʢߴ஌޻Պେֶʣੴా
   ൟາʢެཱ͸ͩͯ͜ະདྷେֶʣ
   ԣా
   ஌೭ʢ౦ژେֶʣછ୩
   ོ෉ʢ౦ژେֶʣ઒ݪ
   ܓതʢ౦ژେֶʣ
2.  M = k Lreader Lsensor %BJMZ"3ΠϯλϑΣʔε   "3άϥεͷొ৔ʹΑΓɺ೔ৗੜ׆ͷதͰ"3ΠϯλϥΫγϣϯ͕Ͱ͖ΔΑ͏ʹͳ͖ͬͯͨɻ
   ˠ
   ԰಺Ͱͷήʔϛϯάར༻͔Βɺ԰֎Ͱͷ൚༻తͳར༻͕ظ଴Ͱ͖Δɻ IUUQTSFOUBMLJLJUPEPDPNPOFKQQPSUBMBSUJDMFT
3.  M = k Lreader Lsensor ΢ΣΞϥϒϧʹͱͬͯͷʮϚ΢εʯ͸ʁ   
   DN
   ఔ౓ͷखͷಈ͖ɺָͳ࢟੎ 
   
   DN
   ఔ౓ͷखͷಈ͖ɺखΛු͔ͤΔ "3άϥε͸σΟεϓϨΠͷ୅ΘΓͱͳΔ͚ͩɻ
   ˠ
   ϙΠϯλͷ୅ΘΓͱͳΔ͸ͣͷϦετόϯυ͸ɺϚ΢εͷΑ͏ʹඍখͳδΣενϟΛೝࣝͰ͖ͳ͍ɻ
   ˠ
   
   NNͷखͷಈ͖Ͱ
   NNఔ౓ͷϙΠϯλҠಈ͕Ͱ͖ΔϚ΢εͱ͸ਅٯɻ .FUB
   0SJPO
4.  M = k Lreader Lsensor εϚʔτϦϯά   .PVTF3JOH
   [X. Shen et al., ACM CHI (2024)] &MFDUSP3JOH
   [W. Kienzle et al., ACM CHI (2021)] "VSB3JOH
   [E. Whitmire et al., ACM IMWUT (2020)] ࢦͷۙ͘ʹ͋ΔࢦྠΛ࢖͑͹ɺࢦઌͷඍখͳಈ͖Λ؆୯ʹηϯγϯάͰ͖Δɻ
   ˠ
   ௕࣌ؒͷ࢖༻Ͱ΋ർΕʹ͘͘ɺपғͷ໨΋ؾʹͤͣ࢖͑Δɻ
5.  M = k Lreader Lsensor   ࢦྠʹ౥ࡌͨ͠খܕి஑Ͱ͸ɺʮ࿈ଓͨ͠ແઢ௨৴ʯ͕਺͔࣌ؒ͠Ͱ͖ͳ͍ɻ 
   N" ೖྗδΣενϟͷσʔλΛ్੾ΕΔ͜ͱͳ͘ૹ৴͍͕ͨ͠ #-& 
   N"I খܕి஑ ࣌ؒ ϔϧεέΞ༻εϚʔτϦϯά͸ɺ਺෼ʹҰ౓͔͠௨৴͠ͳ͍ʮؒܽ௨৴ʯʹΑΔ௕࣋ͪͤ͞Δɻ
6. picoRing mouse ɾిྲྀɿ
   N"
   ɾಈ࡞ɿ
   ࣌ؒ
7.  M = k Lreader Lsensor ௿ిྗແઢ௨৴ɿ3'όοΫεΩϟλ   ֎෦͔Βͷແઢ৴߸ʢి࣓೾ʣ΁ɺλάͷσʔλΛ૬৐Γͤ͞Δɻ
   ˠ
   ిྗফඅͷେ͖ͳ৴߸૿෯ɾ෮ௐث͕ඞཁͳ͘ͳΓɺ௿ిྗ௨৴ʢN8ʣ͕Ͱ͖Δɻ ૹ৴ث ड৴ث ৴߸ੜ੒ثͷ୅ΘΓʹ3'εΠον΁ όοΫεΩϟλλά lz lz lz lz
8.  M = k Lreader Lsensor ௿ిྗແઢ௨৴ɿ3'όοΫεΩϟλ   ి೾ͷ૿෯Λ͠ͳ͍όοΫεΩϟλ͸ɺۙڑ཭ݶఆͰར༻͞Ε͍ͯΔɻ
   ಛʹɺ௿͍प೾਺Ͱͷ࣓քόοΫεΩϟλ͸ɺి೾Λٵऩ͠΍͍͢ώτͱͷׯবΛճආͰ͖Δɻ 
   .)[
   3'*%λά 
   .)[
   /'$λά Ұ౓ʹଟ͘ͷλάΛಡΈऔΓՄೳɻ
   ి࣓೾͕ώτͱׯবɾ௨৴Τϥʔͷ૿େɻ ۙڑ཭Ͱ͔͠࢖༻Ͱ͖ͳ͍ɻ
   ࣓քΛ࢖͏ͨΊɺώτͷۙ͘Ͱ΋҆ఆ௨৴ɻ ϢχΫϩ
9.  M = k Lreader Lsensor ࢦྠ͔Β࠷΋͍ۙϦετόϯυ΁όοΫεΩϟλͰ͖ͳ͍͔ʁ   ৴߸Λ૿෯͠ͳ͍࣓քόοΫεΩϟλͰ͸ɺۙ઀ͨ͠ঢ়گԼʢ
   DNʣͰ͔͠࢖༻Ͱ͖ͳ͍ɻ
   ˠ
   Ϧετόϯυ͔Β཭ΕͨࢦྠܕλάίΠϧͰ͸ɺ࣓քͷ൓ࣹ͕খ͗͢͞ΔͨΊ௨৴Ͱ͖ͳ͍ɻ ࣓քόοΫεΩϟλ ࢦྠܕ
   όοΫεΩϟλλά ϦετόϯυܕϦʔμ ཧ૝ ݱ࣮
10.  M = k Lreader Lsensor ՝୊ɿ௿ײ౓ɾۙڑ཭ͷ࣓քόοΫεΩϟλ   ՝୊
    
    ࣓քόοΫεΩϟλͰࢦྠʔϦετόϯυؒͷ௿ిྗ௨৴͕Ͱ͖ͳ͍ɻ
    ՝୊
    
    ࢦྠίΠϧ͕Ұ౓ͷॆిͰҰϲ݄Ҏ্΋ͭΑ͏ʹͰ͖ͳ͍ɻ ࢦྠίΠϧͷফඅిྲྀ͸ɺ௨৴ɾηϯαΛؚΊɺ
    
    
    Ж"
    ΛԼճΓ͍ͨɻ
    ࣓քόοΫεΩϟλͰ
    
    DNఔ౓ͷ௨৴ڑ཭Λ͔͍ͤ͗ͨɻ
    ࢦྠ Ϧετόϯυ
11.  M = k Lreader Lsensor ఏҊɿ௨৴ಛԽͷߴײ౓/'$   ߴײ౓ͳίΠϧΛ։ൃ͠ɺऑ͍࣓քͰ΋҆ఆ࣓ͯ͠քόοΫεΩϟλͰ͖ΔΑ͏ʹ͢Δɻ Ұൠతͳ/'$ɿ
    த్൒୺ͳίΠϧʢ௿ײ౓ɾڱଳҬʣΛ࢖͍ɺ
    ۙڑ཭Ͱɺແઢ௨৴ͱແઢڅిΛ྆ํ͢Δɻ ఏҊ͢Δ/'$ʢ4FNJ1*5ʣɿ
    ߴײ౓ɾ޿ଳҬͷίΠϧΛ࢖͍ɺ
    தڑ཭Ͱɺ௨৴͚ͩ͢Δɻ ௨৴ײ౓ څిޮ཰ ௨৴ײ౓ څిޮ཰
12.  M = k Lreader Lsensor ఏҊɿߴײ౓ͳίΠϧ   ίΠϧͷ௨৴ײ౓͸ɺ
    w k 
    ݁߹܎਺ʢڑ཭ɾେ͖͞ʣ
    w L
    
    ίΠϧͷΠϯμΫλϯε
    w ω = 2πf
    
    ʢ֯ʣप೾਺
    Ͱܾ·Δɻ ω2k2Lring Lwrist ௨ৗͷίΠϧ
    ۙڑ཭
    d
    DN High Low k L ײ౓ L C k and f are fi xed. f: ~27 MHz
13.  M = k Lreader Lsensor ఏҊɿߴײ౓ͳίΠϧ   ୯७ʹר͖਺Λ૿΍͢ͱɺු༡༰ྔʹͳΔ NL >0.1λ C N C N High Low k L ײ౓ f: ~27 MHz λ: 11 m ෼ࢄίϯσϯα෇͖ߴײ౓ίΠϧ d
    DN High Low k L ײ౓ ෼ࢄίϯσϯα <3
    5BLBIBTIJ
    FU
    BM
    .FBOEFS
    $PJM
    "$.
    $)*
     > L L L C C C NL C N <0.1λ
14.  M = k Lreader Lsensor 5 7 9 10 13 15 Distance (cm) 6 8 11 14 12 SNR 10 15 20 25 30 35 40 45 ఏҊɿ෼ࢄίϯσϯαʹΑΔ௨৴ײ౓ͷ޲্   ࢦྠʔϦετόϯυίΠϧ͕ؒ
    DN཭Εͯ΋ɺߴ͍4/ൺʢʣΛࣔ͢ɻ ഒͷ௨৴ڑ཭ ैདྷ ఏҊ
15.  M = k Lreader Lsensor ࣮ࡍ͸ଞʹ΋͍Ζ͍Ζߴײ౓Խٕज़Λར༻͍ͯ͠Δ   Lwrist Cwrist Lring Rring Rwrist k, M Vin Vin Vout, Pout Zload Ramp Wristband coil Ring coil Zref (=Zwrist) Vector network analyzer (VNA) and PC Peak 28 Freq. (MHz) 30 f0 0 Pout (dB) 28 Freq. (MHz) 30 f0 Raw signal (w/ ring) Baseline 0 ∆Pout (dB) 1.0 Readout board (balanced bridge circuit) Cring MCU Cvaractor Battery Mouse module Trackball Apply voltage ෼ࢄίϯσϯαͰɺ4/ൺΛ
    E#૿΍͠ɺ
    ϒϦοδճ࿏Ͱɺ4/ൺΛ͞Βʹ
    E#૿΍͠ɺ
    ඍখϐʔΫΞϧΰϦζϜͰɺి࣓ϊΠζʹؤڧͳϐʔΫݕग़Λߦ͏ɻ <3
    5BLBIBTIJ
    FU
    BM
    QJDP3JOH
    "$.
    6*45
     >
17. ఏҊ̎ɿप೾਺ଟॏԽϕʔεͷ࣓քόοΫεΩϟλ   प೾਺ଟॏԽ
     ࢦྠ͸ɺڞৼप೾਺ΛมԽͤ͞Δ
    fring ɻ
     Ϧετόϯυ͸ɺ࣓৔ʹΑΓfring Λݕ஌ɻ  ࢦྠ͸ηϯαΛՄมίϯσϯαʹ͢Δɻ
     Ϧετόϯυ͸ऑ͍࣓৔Λͭ͘Δɻ Vwrist प೾਺ fring ϦετόϯυίΠϧ 0'' 0/ ࢦྠ
    ίΠϧ fring = 1 2π LC ࢦྠͷڞৼप೾਺ ࣓৔ <3
    5BLBIBTIJ
    FU
    BM
    5FMFNFU3JOH
    "$.
    6*45
     >
18.  M = k Lreader Lsensor ఏҊ̎ɿ࣓ؾτϥοΫϘʔϧͱόϥΫλμΠΦʔυ   ҹՃిѹʹΑΓΩϟύγλϯε͕มΘΔɺόϥΫλμΠΦʔυʢόϥΫλʣΛ࢖͏ɻ
    ˠ
    τϥοΫϘʔϧͷೖྗʹԠͯ͡ϚΠίϯͰҹՃిѹΛม͑ɺόϥΫλʹΑΓɺࢦྠͷڞৼप೾਺Λม͑Δɻ Magnetic switch x 4 Tactile switch Scroll Press Micro trackball Microcontroller (MCU) Voltage-controlled variable capacitor Ring coil Varactor diode Digital potentiometer 1.8 V Change resistance
20. ϦετόϯυܕίΠϧ
    ૹ৴৴߸
    
    N8
    प೾਺ଳҬ
    
    .)[ ௨৴ճ࿏ ෮ௐϞδϡʔϧ
21. ࢦྠܕίΠϧ
    ॏ͞
    
    
    HSBN
    ి஑༰ྔ
    
    
    N"I
    ফඅిྗ
    
    Ж8
    ʢ࠷খʣಈ࡞࣌ؒ
    
    ࣌ؒ
    ೖྗδΣενϟɿΫϦοΫɾεΫϩʔϧ
22. "$5*7&
    
    ϚΠίϯ 
    Ж" Ϛ΢ε 
    Ж" ߹ܭ 
    Ж" #-& 
    Ж" Ϛ΢ε
    ʢ࣓ؾࣜτϥοΫϘʔϧʣ ϚΠίϯ ෛՙมௐճ࿏ "$5*7&࣌͸ɺ#-&ʢ#MVFUPPUI
    -PX
    &OFSHZʣͷͷফඅిྲྀͰ௨৴Ͱ͖Δɻ
23.  M = k Lreader Lsensor ఏҊ̎ɿΞΫςΟϒɾεϦʔϓϞʔυ   4-&&1 
    Ж" 
    Ж" 
    Ж" 
    Ж" "$5*7&
    
    ϚΠίϯ 
    Ж" Ϛ΢ε 
    Ж" ߹ܭ 
    Ж" #-&Λ
    ར༻ 
    Ж" 
    ࣌ؒ
    ʢ"$5*7&ͷΈʣ
    
    ࣌ؒ
    ʢ4-&&1΋ؚΉʣ Ϛ΢εೖྗ͕ͳ͍৔߹͸ɺ*$ΛεϦʔϓϞʔυ΁ɻ
    ˠ
    Ұ౓ͷॆిͰɺ೔ར༻Ͱ͖Δɻ ೔͚࣌ؒͩ࢖༻͢Δ৔߹
26.  M = k Lreader Lsensor ධՁ̍ɿϚ΢εೖྗʹର͢Δ4/ൺ   प೾਺ଟॏԽʹΑΓɺϚ΢εͷσʔλΛόοΫεΩϟλ͢Δɻ
    ˠৗʹߴ͍4/ൺʢʣͰϚ΢εͷσʔλΛݕग़Ͱ͖Δɻ /P
    JOQVU 4DSPMM
    EPXO 4DSPMM
    VQ 4DSPMM
    MFGU 4DSPMM
    SJHIU $MJDL प೾਺
    ʢ.)[ʣ 4/ൺ
    ʢBVʣ       4/ൺɿ 4/ൺɿ 4/ൺɿ 4/ൺɿ 4/ൺɿ 4/ൺɿ
27.  M = k Lreader Lsensor ධՁ̎ɿి࣓ϊΠζʹର͢Δ4/3   4/ൺ͕ߴ͍࣓քόοΫεΩϟλʹՃ͑ɺϚ΢εͷσʔλ͸
    CQTఔ౓ͱ௿଎ɻ
    ˠ
    ฏۉϑΟϧλϦϯάΛ࢖͏͜ͱͰɺి࣓ϊΠζͷӨڹΛআڈͰ͖Δɻ 4/ൺ
    ʢBVʣ    प೾਺
    ʢ.)[ʣ    4/ൺɿ 4/ൺɿ 4/ൺɿ
28.  M = k Lreader Lsensor ·ͱΊ   ߩݙ
    
    ߴײ౓ɾ৴པੑͷ͋Δ࣓քόοΫεΩϟλʹΑΓɺࢦྠʔϦετόϯυؒͰ௿ిྗ௨৴ɻ
    ߩݙ
    
    ࢦྠܕແઢϚ΢ε͕Ұ౓ͷॆిͰҰϲ݄Ҏ্΋ͭΑ͏ʹɻ ࢦྠίΠϧͷফඅిྲྀ͸ɺ௨৴ɾηϯαΛؚΊɺ
    
    ࠷େ 
    Ж"
    ͰࡁΉɻ
    ߴײ౓ͳ࣓քόοΫεΩϟλΛ։ൃ͠ɺ
    ໿
    DNͷ Ж8ڃ௨৴Λ࣮ݱɻ
    picoRing mouse ɾ
    N"
    ɾ
    ࣌ؒ