| Presentation | 2015-06-19 BLE beacons' application to guidance systems for the visually impaired Kazushi Sasaki, Toru Nakano, Daisuke Wakatsuki, Makoto Kobayashi, Kentaro Nishimori, Hideo Makino, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The present work examines an indoor, BLE beacon-based guidance systems that, when completed, holds the promise of truly accurate geographical positioning. At first, RSSI (Received Signal Strength Indication) is measured in smartphones, and the distance between the beacon and smartphone is estimated, based on its strength. Regarding signal strength, the degree of positioning error depends on the circumstances resulting from microwave reflection, or scattering. To prevent such interferences, we place the BLE beacon in a micro wave absorbing material to form a directional transmitter. In our experiments, we first measured signal strength in an anechoic chamber, to prevent interference; this according to the distance between the beacon and the smartphone; (1m~ 5 m). We then, repeated the measurements in a laboratory setting. Results were compared with a mathematical estimation formula. As a result, the measured values ware matched with the formula from up to 3m. Moreover, when using the absorbent material, the decrease in signal strength was greater than 12.5dBm, when the beacons were placed 2 meters apart. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Guidance systems / BLE / RSSI / Reflection |
| Paper # | PRMU2015-59,SP2015-28,WIT2015-28 |
| Date of Issue | 2015-06-11 (PRMU, SP, WIT) |
| Conference Information | |
| Committee | WIT / SP / ASJ-H / PRMU |
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| Conference Date | 2015/6/18(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Kiyohiko Nunokawa(Tokyo International Univ.) / Kazunori Mano(Shibaura Inst. of Tech.) / Masato Akagi(北陸先端大) / Eisaku Maeda(NTT) |
| Vice Chair | Chikamune Wada(Kyushu Inst. of Tech.) / Norihide Kitaoka(Tokushima Univ.) / Shigeto Furukawa(NTT) / Shuji Senda(NEC) / Seiichi Uchida(Kyushu Univ.) |
| Secretary | Chikamune Wada(Nagoya Inst. of Tech.) / Norihide Kitaoka(AIST) / Shigeto Furukawa(Tsukuba Univ. of Tech.) / Shuji Senda(Tokyo City Univ.) / Seiichi Uchida(Kobe Univ.) |
| Assistant | Tomohiro Amemiya(NTT) / Takeaki Shionome(Tsukuba Univ. of Tech.) / Manabi Miyagi(Tsukuba Univ. of Tech.) / Takashi Nose(Tohoku Univ.) / Taichi Asami(NTT) / / Kazuaki Kondo(Kyoto Univ.) / Akisato Kimura(NTT) |
| Paper Information | |
| Registration To | Technical Committee on Well-being Information Technology / Technical Committee on Speech / * / Technical Committee on Pattern Recognition and Media Understanding |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | BLE beacons' application to guidance systems for the visually impaired |
| Sub Title (in English) | |
| Keyword(1) | Guidance systems |
| Keyword(2) | BLE |
| Keyword(3) | RSSI |
| Keyword(4) | Reflection |
| 1st Author's Name | Kazushi Sasaki |
| 1st Author's Affiliation | Niigata University(Niigata Univ.) |
| 2nd Author's Name | Toru Nakano |
| 2nd Author's Affiliation | Niigata University(Niigata Univ.) |
| 3rd Author's Name | Daisuke Wakatsuki |
| 3rd Author's Affiliation | Tsukuba University of Technology(Tsukuba Univ. of Tech.) |
| 4th Author's Name | Makoto Kobayashi |
| 4th Author's Affiliation | Tsukuba University of Technology(Tsukuba Univ. of Tech.) |
| 5th Author's Name | Kentaro Nishimori |
| 5th Author's Affiliation | Niigata University(Niigata Univ.) |
| 6th Author's Name | Hideo Makino |
| 6th Author's Affiliation | Niigata University(Niigata Univ.) |
| Date | 2015-06-19 |
| Paper # | PRMU2015-59,SP2015-28,WIT2015-28 |
| Volume (vol) | vol.115 |
| Number (no) | PRMU-98,SP-99,WIT-100 |
| Page | pp.pp.157-162(PRMU), pp.157-162(SP), pp.157-162(WIT), |
| #Pages | 6 |
| Date of Issue | 2015-06-11 (PRMU, SP, WIT) |