Wi-Fi RTTによる屋内測位アプリを作ろう

1. 8J'J
   355ʹΑΔ԰಺ଌҐΞϓϦ Λ࡞Ζ͏ !OBQQMFDPNQVUFS 1
2. ࣗݾ঺հ • ͳͬͽʔ
   • !OBQQMFDPNQVUFS
   • גࣜձࣾσΟʔɾΤψɾΤʔॴଐ
   • .07ͷϢʔβʔΞϓϦ։ൃ 2
3. ໨࣍ 3 ͖͔͚ͬ 8J'J
   355ͷ࢓༷ ࡞ͬͯΈͨ   ਫ਼౓Λ্͛ΔͨΊͷΞΠσΟΞ  
4. ͖͔͚ͬ 4
5. 5 )PX
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6. 8J'J
   355ͷ࢓༷ 6
7. "OESPJEͷҐஔ৘ใऔಘํ๏ 7
8. 'VTFE
   -PDBUJPO 8
9. 'VTFE
   -PDBUJPOͳ͠ 9 ΞϓϦ ηϯαʔ" ΞϓϦ ηϯαʔ$ ηϯαʔ#
10. 'VTFE
    -PDBUJPO͋Γ 10 ΞϓϦ ηϯαʔ" ΞϓϦ ηϯαʔ$ ηϯαʔ# (PPHMF
    1MBZ
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11. 'VTFE
    -PDBUJPO 11 (14 8J'J
    344* ΩϟϦΞج஍ہ ਫ਼౓ ϝʔτϧ ϝʔτϧ ϝʔτϧʁ ԰಺ ! " " ҐஔଌҐ༻ " ! ʁ
12. 'VTFE
    -PDBUJPO 12 (14 8J'J
    344* ΩϟϦΞج஍ہ 8J'J
    355 ਫ਼౓ ϝʔτϧ ϝʔτϧ ϝʔτϧʁ ϝʔτϧ ԰಺ ! " " " ҐஔଌҐ༻ " ! ʁ "
13. 'VTFE
    -PDBUJPO 13 (14 8J'J
    344* ΩϟϦΞج஍ہ 8J'J
    355 ਫ਼౓ ϝʔτϧ ϝʔτϧ ϝʔτϧʁ ϝʔτϧ ԰಺ ! " " " ҐஔଌҐ༻ " ! ʁ " /&8
14. 8J'J
    355ͷ࢓༷ 14
15. 8J'J
    355 • 355͸3PVOE
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    NDͰఆٛ
    • *&&&
    NDʹରԠ͍ͯ͠ΔΞΫηεϙΠϯτͱɺ *&&&
    NDʹରԠ͍ͯ͠Δ୺຤͕ඞཁ
    • ௨৴͔࣌ؒΒڑ཭Λܭଌ͢Δ 15
16. ڑ཭ܭଌ 16 ΞΫηεϙΠϯτ ୺຤ ڑ཭
    
    τʔλϧ࣌ؒ
    ʷ
    ޫͷ଎͞ D
    
    ̎
17. ڑ཭ܭଌ΋ͬͱৄ͘͠ 17 ΞΫηεϙΠϯτ ୺຤ '5.
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18. ୺຤ͷҐஔΛܭࢉ͢Δ 18
19. ୺຤ͷҐஔΛࢉग़͢Δ • 355ͰऔΕΔͷ͸ΞΫηεϙΠϯτ·Ͱͷڑ཭͚ͩ
    • ୺຤ͷҐஔ৘ใͷࢉग़͸355ͷൣғ֎
    • ࣗ෼Ͱܭࢉ͢Δ
    • ΞΫηεϙΠϯτͷҐஔ৘ใ΋355ͷൣғ֎
    • ΞΫηεϙΠϯτ͕ͭ͋Ε͹Ґஔͷಛఆ͕Մೳ
    • ਫ਼౓Λग़͢ͳΒͭ΄͍͠ 19
20. ΞΫηεϙΠϯτ͕ͭͷ৔߹ 20
21. ΞΫηεϙΠϯτ͕ͭͷ৔߹ 21
22. ΞΫηεϙΠϯτ͕ͭͷ৔߹ 22
23. ࣮ࡍʹ͸׬ᘳͳ஋͸
    औಘͰ͖ͳ͍ 23
24. ݱ࣮ 24
26. (PPHMF
    *0Ͱ঺հ͞Ε͍ͯͨํ๏ • ࣍ݩ௚ަ࠲ඪʹ୺຤ͱΞΫηεϙΠϯτΛஔ͘
    • ϐλΰϥεͷఆཧΛ࢖ͬͯํఔࣜͰදݱ͢Δ
    • ͭͷ࣍ํఔࣜΛͭͷ࿈ཱํఔࣜʹͯ͠ղ͘
    • ͭͷ࣍ํఔࣜʹͳΔ
    • ͭͷ࣍ํఔࣜͷ઀఺Ͱଟ֯ܗΛ࡞Γɺͦͷଟ֯ܗͷ த৺Λ୺຤ͷҐஔͱ͢Δ 26
27. ࣍ݩ௚ަ࠲ඪʹ୺຤ͱΞΫηεϙΠϯτΛஔ͘ 27
28. 28 x1 y1 r1 x, y (x − x1 )2 + (y − y1 )2 = r2 1 ϐλΰϥεͷఆཧΛ࢖ͬͯํఔࣜͰදݱ͢Δ
29. ϐλΰϥεͷఆཧΛ࢖ͬͯํఔࣜͰදݱ͢Δ 29 (x − x1 )2 + (y − y1 )2 = r2 1 (x − x3 )2 + (y − y3 )2 = r2 3 (x − x2 )2 + (y − y2 )2 = r2 2 (x − x4 )2 + (y − y4 )2 = r2 4
30. ࣍ํఔࣜΛඳը͢Δ 30 (x − x1 )2 + (y − y1 )2 = r2 1 (x − x3 )2 + (y − y3 )2 = r2 3 (x − x2 )2 + (y − y2 )2 = r2 2 (x − x4 )2 + (y − y4 )2 = r2 4
31. ଟ֯ܗͷਅΜதΛ୺຤ͷ৔ॴͱ͢Δ 31 (x − x1 )2 + (y − y1 )2 = r2 1 (x − x3 )2 + (y − y3 )2 = r2 3 (x − x2 )2 + (y − y2 )2 = r2 2 (x − x4 )2 + (y − y4 )2 = r2 4
32. "OESPJEͷ8J'J
    355
    "1* 32
33. "OESPJEͰͷ8J'J
    355 • 04ͱͯ͠͸"OESPJE
     "1*
    -FWFM
     ͔ΒରԠ
    • ୺຤ͱͯ͠͸1JYFM
     9-ؚΉ ͕ରԠ͍ͯ͠Δ
    • *0Ͱ͸1JYFMTͱݴͬͯͨͷͰ1JYFM΍1JYFM΋ର Ԡͯ͠Δ͔΋ 33
34. ಛ௃ • ΞΫηεϙΠϯτʹ8J'Jͱͯ͠઀ଓ͠ͳͯ͘΋࢖͑Δ
    • ଞͷΞΫηεϙΠϯτʹ8J'Jͱͯ͠઀ଓதͰ΋࢖͑Δ
    • ̍౓ͷ"1*ͷ࣮ߦͰ'5.Λෳ਺ճ౤͛ͯɺฏۉɺඪ४ ภࠩ΍Τϥʔ཰Λฦͯ͘͠ΕΔ
    • كʹϚΠφεͷڑ཭͕ฦͬͯ͘Δʜ
    • ߴස౓ NT͘Β͍ʣͰ࢖͏ͱࢮ͵ 34
35. ΍Δ͜ͱ • 8J'JΞΫηεϙΠϯτΛεΩϟϯ͢Δ
    • εΩϟϯͯ͠ಘΒΕͨΞΫηεϙΠϯτͷதʹ8J'J
    355ରԠ͍ͯ͠ΔΞΫηεϙΠϯτ͕͋Δ͔֬ೝ͢Δ
    • 8J'J
    355ରԠΞΫηεϙΠϯτͱ8J'J
    355ͷ΍ ΓͱΓΛͯ݁͠ՌΛಘΔ 35
36. ඞཁͳ1FSNJTTJPO <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/> <uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/> <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/> 36
37. 8J'JΞΫηεϙΠϯτΛεΩϟϯ val receiver = object: BroadcastReceiver() { override fun onReceive(context: Context, intent: Intent) { when(intent.action) { WifiManager.SCAN_RESULTS_AVAILABLE_ACTION -> { // Wi-FiͷεΩϟϯ͕׬ྃͨ͠ } } } } val filter = IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION) registerReceiver(receiver, filter) 37
38. 8J'JΞΫηεϙΠϯτΛεΩϟϯ val wifiManager = getSystemService(Context.WIFI_SERVICE) as WifiManager wifiManager.startScan() 38
39. 8J'JΞΫηεϙΠϯτΛεΩϟϯ val scanResults = wifiManager.scanResults.filter { it.is80211mcResponder } 39
40. ΞΫηεϙΠϯτ·Ͱͷڑ཭Λऔಘ val rangingRequest = RangingRequest.Builder() .addAccessPoints(scanResults) .build() val rttManager = getSystemService(Context.WIFI_RTT_RANGING_SERVICE) as WifiRttManager val resultCallback = object : RangingResultCallback() { override fun onRangingResults(results: MutableList<RangingResult>) { val ragingResults = results.filter { it.status == STATUS_SUCCESS } } override fun onRangingFailure(code: Int) { } } rttManager.startRanging(rangingRequest, executor, resultCallback) 40
41. TUBSU4DBOͷ࢓༷มߋ • 8JGJ.BOBHFSTUBSU4DBO ͕"1*
    -FWFM
    ͔ Β৭ʑมߋ
    • ಥવͷEFQSFDBUFE
    • ͔͠΋୅ସखஈ͸ࠓͷͱ͜Ζͳͦ͞͏
    • όοΫάϥ΢ϯυΞϓϦͰ͸෼ʹճ͔͠ݺ΂ͳ͍
    • ϑΥΞάϥ΢ϯυΞϓϦͰ΋෼ʹճ͔͠ݺ΂ͳ͍ 41
42. 8J'J
    "XBSFʹΑΔ355 42
43. 8J'J
    "XBSFʹΑΔ355 • 8J'J
    "XBSFΛ࢖͏ͱ"OESPJE୺຤ಉ࢜Ͱ355Λ ߦ͑Δ
    • "1*
    -FWFM
    ͔Β
    • 8J'J
    "XBSF͸͢Ε͕͍ͪ௨৴ͷΑ͏ͳػೳΛ࣮ݱ Ͱ͖Δ
    • 8J'J
    "XBSFͰ઀ଓޙɺ355༻ͷϝιουΛݺͿ 43
44. ࡞ͬͯΈͨ 44
45. ࡞Δࡍʹ΍Δ͜ͱ • ΞΫηεϙΠϯτͷબఆ
    • ৔ॴͷબఆ
    • ஍ਤͷೖख
    • ΞΫηεϙΠϯτͷઃஔ
    • ΞΫηεϙΠϯτͷҢ౓ܦ౓ͷऔಘ
    • ΞϓϦͷ࡞੒ 45
46. ΞΫηεϙΠϯτͷબఆ 46
47. ΞΫηεϙΠϯτͷબఆ • *&&&
    NDʹରԠͨ͠8J'JΞΫηεϙΠϯτ
    • 8J'J
    "XBSF
    • ͭ·Γ1JYFM
     47
48. *&&&
    NDରԠΛ
    ᨳ͍ͬͯΔΞΫηεϙΠϯτ 48
49. ແ͍
    49
50. ແ͍
    ˞ͳͬͽʔௐ΂ 50
51. 51 (PPHMF
    8J'J
52. (PPHMF
    8J'J • (PPHMF
    *0
    Ͱ͸(PPHMF
    8J'J͕XJMM
    TPPO ͰରԠ͢Δͱݴ͍ͬͯͨ
    • (PPHMF
    8J'JͷϦϦʔεϊʔτΛ൒೥Ҏ্؂ࢹ͠ଓ͚ ͕ͨ*&&&
    NDͷ͜ͱ͸Ұ੾ॻ͔Ε͍ͯͳ͍
    • XJMM
    TPPOͱ͸Կͩͬͨͷ͔ 52
53. (PPHMF
    8J'J • %SPJE,BJHJͷొஃ΋ܾ·ͬͨͷͰɺ(PPHMF
    8J'J ͕͍ͭߋ৽͞Εͯ΋͍͍Α͏ʹങ݄ͬͯʹηοςΟϯ άͨ͠
    • ՈͰ8J'J
    355ͷ"OESPJE
    "1*Λࢼͨ͠Β8J'J
    355ରԠ͍ͯ͠ΔΞΫηεϙΠϯτ͕ݟ͔ͭͬͨ
    • (PPHMF
    8J'J͕͠ΕͬͱରԠ͍ͯͨ͠ 53
54. (PPHMF
    8J'J • ରԠ͍ͯ͠Δ΋ͷͷ(PPHMF
    8J'Jͷઃఆ߲໨ʹ8J'J
    355͸ͳ͍
    • (PPHMF
    *0Ͱ͸8J'J
    355͸σϑΥϧτͰΦϯͱݴͬ ͍͕ͯͨΦϑʹͰ͖ͳ͍
    • օ͞Μ͕͓࢖͍ͷ(PPHMF
    8J'J΋'5.
    SFRVFTUΛ ૹΔͱ'5.ฦͯ͘͠Ε·͢ 54
55. ৔ॴͷબఆ 55
56. ৔ॴͷબఆ • ී௨͸ܭଌ͍ͨ͠৔ॴ͕͋Δͱ͜Ζ͔Β࢝·ΔͷͰ৔ ॴ͕ܾ·ͬͨঢ়ଶͰ࢝·Δʢ͸ͣʣ
    • ࠓճ͸ܭଌ͢Δ͜ͱ͕໨తͳͷͰɺ৔ॴͷબఆ͕ඞཁ 56
57. ৔ॴͷ৚݅ • ޿͍৔ॴ
    • ڱ͍৔ॴ͸ਫ਼౓తʹແཧ
    • ݐ෺಺ͷେ͖͕͞ਖ਼֬ͳ஍ਤ͕͋Δ
    • ݐ෺಺ͷҢ౓ܦ౓ΛʢϝδϟʔͰଌΔͳͲͷํ๏Ͱʣ ஌Δ͜ͱ͕Ͱ͖Δ
    • ΞΫηεϙΠϯτͷҢ౓ܦ౓ʹਖ਼֬ͳ஋͕ඞཁ 57
58. ࠓճͷ৔ॴ • ࠓճ͸ࣗ෼ͷՈʹͨ͠
    • ͋ͱ͔ΒݟΔͱ͜Ε͸ࣦഊ
    • ڱ͍
    • σϞಈըͰΞϓϦͷը໘ͱ৔ॴΛऩΊ͔͕ͨͬͨɺ ՈͷதΛ%SPJE,BJHJͰࡽ͢༐ؾ͸ͳ͔ͬͨ 58
59. ஍ਤͷೖख 59
60. ஍ਤͷೖख • ϢʔβʔʹݟͤΔͱ͖ͱΞΫηεϙΠϯτͷઃஔʹ࢖ ༻͢Δ
    • ԰಺ͷ஍ਤ͕ͳ͍ͳΒ԰಺ଌҐ͢Δҙຯ͸͋·Γͳ͍
    • ਖ਼֬ͳ஍ਤͰͳ͚Ε͹ਖ਼֬ͳଌҐ͸Ͱ͖ͳ͍
    • ࠓճ͸ؒऔΓਤΛ࢖༻ 60
61. ΞΫηεϙΠϯτͷઃஔ 61
62. ΞΫηεϙΠϯτͷઃஔ • ձ৔ͷେ͖͞ʹ߹Θͤͯ·Μ΂Μͳ͘ઃஔ͢Δ
    • ΞΫηεϙΠϯτʹғ·Ε͍ͯΔΑ͏ͳঢ়ଶʹ͢Δ
    • ௚ઢͰ݁΂ΔΑ͏ͳ഑ஔ͸Ͱ͸ਫ਼౓͕ग़ͳ͍
    • ࢛͍֯෦԰ͳΒ࢛۱ͱਅΜத͕ྑͦ͞͏
    • ࠓճ͸ׂͱࡶ 62
63. ΞΫηεϙΠϯτͷҢ౓ܦ౓ 63
64. ΞΫηεϙΠϯτͷҢ౓ܦ౓ͷऔಘ • ஍ਤͳͲΛ࢖ͬͯΞΫηεϙΠϯτͷҢ౓ܦ౓Λؤுͬ ׂͯΓग़͢
    • ௒େม 64
65. ΞϓϦͷ࡞੒ 65
66. ΞϓϦͷ࡞੒ • (PPHMF
    .BQ
    4%,Λ࢖͏͔࢖Θͳ͍͔ΛܾΊΔ
    • ࢖Θͳ͍৔߹ɺ஍ਤతͳૢ࡞͸ࣗલ࣮૷͕ඞཁ
    • ࢖Θͳ͍৔߹ɺҢ౓ܦ౓͸ͳͯ͘΋͍͍
    • Ψοͱؾ߹Ͱ࣮૷͢Δ
    • ਫ਼౓Λؾʹ͠ͳ͚Ε͹؆୯ʹ࣮૷Ͱ͖Δ
    • ਫ਼౓Λؾʹ͢Δͱແݶʹ͕͔͔࣌ؒΔ 66
67. ਫ਼౓Λ্͛ΔΞΠσΟΞ 67
68. ਫ਼౓Λ্͛Δ
     • ߴ͞Λ࢖͏
    • ΞΫηεϙΠϯτ͕ఱҪʹ͋Δ৔߹ͳͲ͸ߟྀͨ͠ ΄͏͕ྑͦ͞͏
    • ΞΫηεϙΠϯτͷઃஔ৔ॴΛݟ௚͢
    • ڑ཭͔ΒҐஔ৘ใΛࢉग़͢Δํ๏Λมߋ͢Δ
    • લճऔಘͨ͠஋ͳͲΛ࢖ͬͯҟৗ஋Λແࢹ͢Δ 68
69. ਫ਼౓Λ্͛Δ
     • ΞΫηεϙΠϯτͷ਺Λ૿΍͢
    • ඪ४ภࠩͷେ͖ͳΞΫηεϙΠϯτΛແࢹ͢ΔͳͲ
    • ֤छηϯαʔΛ࢖͏
    • Ճ଎౓ηϯαʔ
    • ίϯύε 69
70. ·ͱΊ 70
71. ·ͱΊ • ΞΫηεϙΠϯτ͸(PPHMF
    8J'J
    • ஍ਤ΍ΞΫηεϙΠϯτͷҢ౓ܦ౓ͳͲͷਖ਼͕֬͞ॏཁ
    • ͋Δఔ౓޻෉Λ͠ͳ͍ͱਫ਼౓͸ग़ͳ͍
    • ਫ਼౓͕ѱ͍৔߹Ͳ͜ʹ໰୊͕͋Δͷ͔ಛఆ͠ʹ͍͘ 71
72. ΋͜͠ͷ৔ͰσϞ͢ΔͳΒ 72
73. ͜ͷ৔ͰσϞ͢Δʹ͸ • ձ৔ͷ8J'JʹӨڹΛ༩͑ΔՄೳੑ͕͋ΔͷͰӡӦʹ֬ ೝ
    • 8J'J
    "XBSFΛ࢖͏
    • ઃஔָ͕ 73
74. ͜ͷ৔ͰσϞ͢Δʹ͸ • ਖ਼֬ͳ஍ਤͷೖख͸ఘΊΔ
    • (PPHMF
    .BQΛͦͷ··࢖͍͍ͬͯͳΒਖ਼֬ͳ஍ ਤ͸ͳͯ͘΋͍͍
    • ৄࡉͳ஍ਤ͕͋ͬͨ΄͏͕໘ന͍͕ɺσϞͳͷͰ໨ ͷલͰಈ͔͚ͩ͢Ͱ΋े෼ 74
75. ͜ͷ৔ͰσϞ͢Δʹ͸ • ઃஔ৔ॴ͸࢛۱ʴձ৔ͷେ͖͞ʹԠͯ͡ਅΜதʹ
    • Ң౓ܦ౓͸ؤுͬͯ༧૝͢Δ
    • લ೔ͳͲʹਤΒͤͯ΋Β͑ͳ͍͔ަব͢Δ
    • 8J'J
    "XBSFͳΒ୺຤ஔ͚ͩ͘ͳͷͰɺΈͳ͞Μ ʹ࣋ͬͯ΋Β͏ͷ΋͋Γ 75