Universal Real-Time Navigational Assistance (URNA): An Urban Bluetooth Beacon for the Blind Presenter:  徐欣佑
References  <ul><li>S. Bohonos, A. Lee, A. Malik, C. Thai, and R. Manduchi “Universal Real-Time Navigational Assistance (U...
Introduction  <ul><li>Blind people cannot use techniques sighted people use for safe ambulation  </li></ul><ul><ul><li>Str...
Bluetooth beacon <ul><li>Due to its limited range </li></ul><ul><ul><li>Ideal solution for location-aware information broa...
Previous work <ul><li>GPS combines with geographic information system (GIS)  </li></ul><ul><ul><li>Environments with tall ...
Previous work (cont’) <ul><li>The Talking Signs system </li></ul><ul><ul><li>Uses an infrared (IR) beacon </li></ul></ul><...
System description  <ul><li>Universal Real-Time Navigational Assistance (URNA) </li></ul><ul><ul><li>Field Programmable Ga...
The layout of the URNA architecture in a traffic intersection
System description (cont’) <ul><li>Navigation Controller (NavCon) </li></ul><ul><li>FPGA-based board that interfaces with ...
System description (cont’) <ul><li>Pedestrian Navigator (PedNav) </li></ul><ul><ul><li>Written for mobile devices </li></u...
System description (cont’) <ul><li>Text-To-Speech (TTS) </li></ul><ul><ul><li>built-in the Symbian S60 devices </li></ul><...
Bluetooth modules <ul><li>Via RS-422 and RS-232 serial protocol </li></ul><ul><ul><li>cable length of 50 ft to 350 ft </li...
User interface usability
Mobile phone <ul><li>Test equipment  </li></ul><ul><ul><li>Nokia N70, Nokia N91 </li></ul></ul><ul><li>PedNav software </l...
Conclusion and future work <ul><li>The risk of radio range overlap between different transmitters </li></ul><ul><li>Improv...
工作指引觀察紀錄 : 快樂商店
田野調查時間與地點 <ul><li>北投國軍醫院”快樂商店” </li></ul><ul><li>時間: 11/29( 四 ) 09:00  ~  12:00 </li></ul><ul><li>就輔員:黃昭蓉 </li></ul><ul><l...
工作項目 <ul><li>店面整理、清潔 </li></ul><ul><li>院區外賣、代購服務 </li></ul><ul><li>收銀機操作與點貨 </li></ul>
工作指引觀察與評估 <ul><li>店面點貨工作提醒 </li></ul><ul><li>外賣、代購外送路線指引 </li></ul><ul><li>收銀機操作 </li></ul>
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Universal Real Time Navigational Assistance (Urna)

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Universal Real Time Navigational Assistance (Urna)

  1. 1. Universal Real-Time Navigational Assistance (URNA): An Urban Bluetooth Beacon for the Blind Presenter: 徐欣佑
  2. 2. References <ul><li>S. Bohonos, A. Lee, A. Malik, C. Thai, and R. Manduchi “Universal Real-Time Navigational Assistance (URNA): An Urban Bluetooth Beacon for the Blind.” 1st International Workshop on Systems and Networking Support for Healthcare and Assisted Living Environments (HealthNet 2007) , June 2007. </li></ul>
  3. 3. Introduction <ul><li>Blind people cannot use techniques sighted people use for safe ambulation </li></ul><ul><ul><li>Street signals or traffic lights </li></ul></ul><ul><ul><li>Information of an approaching bus </li></ul></ul><ul><li>Location-aware information </li></ul><ul><ul><li>Bluetooth-enabled system </li></ul></ul>
  4. 4. Bluetooth beacon <ul><li>Due to its limited range </li></ul><ul><ul><li>Ideal solution for location-aware information broadcasting </li></ul></ul><ul><li>Transmit the schedule of the bus stop </li></ul><ul><li>Description of an urban intersection </li></ul>
  5. 5. Previous work <ul><li>GPS combines with geographic information system (GIS) </li></ul><ul><ul><li>Environments with tall buildings </li></ul></ul><ul><li>Pedestrian traffic lights provide alternative information </li></ul><ul><ul><li>The acoustic signals are often confusing </li></ul></ul>
  6. 6. Previous work (cont’) <ul><li>The Talking Signs system </li></ul><ul><ul><li>Uses an infrared (IR) beacon </li></ul></ul><ul><ul><li>Decoded by a hand-held receiver </li></ul></ul><ul><ul><li>Only when the user points the receiver </li></ul></ul>
  7. 7. System description <ul><li>Universal Real-Time Navigational Assistance (URNA) </li></ul><ul><ul><li>Field Programmable Gate Array (FPGA) </li></ul></ul><ul><ul><li>Accessible Pedestrian Signals </li></ul></ul><ul><ul><li>Bluetooth modules </li></ul></ul><ul><ul><li>Text-To-Speech (TTS) </li></ul></ul>
  8. 8. The layout of the URNA architecture in a traffic intersection
  9. 9. System description (cont’) <ul><li>Navigation Controller (NavCon) </li></ul><ul><li>FPGA-based board that interfaces with the traffic controller </li></ul><ul><ul><li>Via Ethernet </li></ul></ul><ul><li>Bluetooth modules are located at the intersection </li></ul>
  10. 10. System description (cont’) <ul><li>Pedestrian Navigator (PedNav) </li></ul><ul><ul><li>Written for mobile devices </li></ul></ul><ul><ul><li>A J2ME application </li></ul></ul><ul><ul><li>Mobile Information Device Profile (MIDP) </li></ul></ul><ul><li>The role of PedNav </li></ul><ul><ul><li>Accept incoming connections from nearby NavCon beacons </li></ul></ul><ul><ul><li>Relay useful information to the user. </li></ul></ul>
  11. 11. System description (cont’) <ul><li>Text-To-Speech (TTS) </li></ul><ul><ul><li>built-in the Symbian S60 devices </li></ul></ul><ul><ul><li>Include pre-recorded voice </li></ul></ul><ul><ul><li>Audio streaming </li></ul></ul>
  12. 12. Bluetooth modules <ul><li>Via RS-422 and RS-232 serial protocol </li></ul><ul><ul><li>cable length of 50 ft to 350 ft </li></ul></ul><ul><ul><li>Power wiring would still be required </li></ul></ul><ul><li>Power control </li></ul><ul><ul><li>Different communication range </li></ul></ul>
  13. 13. User interface usability
  14. 14. Mobile phone <ul><li>Test equipment </li></ul><ul><ul><li>Nokia N70, Nokia N91 </li></ul></ul><ul><li>PedNav software </li></ul><ul><ul><li>Java-based </li></ul></ul><ul><ul><li>Voice-guided user interface </li></ul></ul>
  15. 15. Conclusion and future work <ul><li>The risk of radio range overlap between different transmitters </li></ul><ul><li>Improve multiple-connection support in PedNav </li></ul><ul><li>Traffic intersection mode </li></ul><ul><li>Store directory mode </li></ul>
  16. 16. 工作指引觀察紀錄 : 快樂商店
  17. 17. 田野調查時間與地點 <ul><li>北投國軍醫院”快樂商店” </li></ul><ul><li>時間: 11/29( 四 ) 09:00 ~ 12:00 </li></ul><ul><li>就輔員:黃昭蓉 </li></ul><ul><li>田調人員:廖瑞華、徐欣佑 </li></ul>
  18. 18. 工作項目 <ul><li>店面整理、清潔 </li></ul><ul><li>院區外賣、代購服務 </li></ul><ul><li>收銀機操作與點貨 </li></ul>
  19. 19. 工作指引觀察與評估 <ul><li>店面點貨工作提醒 </li></ul><ul><li>外賣、代購外送路線指引 </li></ul><ul><li>收銀機操作 </li></ul>

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