Wireless Assistive Sensor Networks for the Deaf 學生 :KJ 老師 : 劉宏煥老師
Reference <ul><li>Hongliang Ren, Meng, M.Q.H. and Xijun Chen,&quot;Wireless Assistive Sensor Networks for the Deaf,&quot; ...
Outline <ul><li>Introduction and motivations </li></ul><ul><li>Existing assistive device </li></ul><ul><ul><li>External, i...
Introduction and motivations <ul><li>Existing assistive devices for deaf : ex.hearing aids </li></ul><ul><ul><li>Independe...
Application of WASN
Existing assistive device <ul><li>External assistive devices </li></ul><ul><ul><li>Hearing aid, assistive listening device...
cochlear implant 1.  聲音處理器透過麥克風接收聲音 2.  聲音處理器內部的換能器將聲振動傳送到內固定裝置  3.  聲音處理器內部的振動換能器直接將聲音透過頭骨傳遞至耳蝸
Proposed system architecture <ul><li>Two scenarios :  </li></ul><ul><ul><li>Smart home, smart school playground </li></ul>...
Sensor node platform <ul><li>MPU :  TI  MSP430F1611 </li></ul><ul><ul><li>Power consumption : ultra-law </li></ul></ul><ul...
Network protocol design <ul><li>802.15.4 </li></ul><ul><li>AODV </li></ul>
Simulations and evaluations <ul><li>Simulator : NS2 </li></ul><ul><li>Protocol of network layer : AODV </li></ul><ul><li>P...
Smart home CBR
Simulation results of Smart home  <ul><li>Avg. packet loss rate : 0.1 %  (4/3663) </li></ul><ul><li>End to end delay : 0.0...
Smart school playground <ul><li>Random waypoint mobility pattern </li></ul><ul><li>50 X 50 square-meter </li></ul><ul><li>...
Conclusions <ul><li>Potentially useful for the deaf </li></ul><ul><li>Be a supportive auxiliary </li></ul>
Upcoming SlideShare
Loading in …5
×

20080325kjmeeting

401 views
333 views

Published on

0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
401
On SlideShare
0
From Embeds
0
Number of Embeds
13
Actions
Shares
0
Downloads
4
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

20080325kjmeeting

  1. 1. Wireless Assistive Sensor Networks for the Deaf 學生 :KJ 老師 : 劉宏煥老師
  2. 2. Reference <ul><li>Hongliang Ren, Meng, M.Q.H. and Xijun Chen,&quot;Wireless Assistive Sensor Networks for the Deaf,&quot; in 2006 IEEE/RSJ International Intelligent Robots and Systems(IROS) Conference, 2006, pp.4804-4808. </li></ul>
  3. 3. Outline <ul><li>Introduction and motivations </li></ul><ul><li>Existing assistive device </li></ul><ul><ul><li>External, implanted </li></ul></ul><ul><li>Proposed system architecture </li></ul><ul><ul><li>Sensor nodes, network protocols design </li></ul></ul><ul><li>Simulations and evaluations </li></ul><ul><ul><li>Smart home, smart school playground </li></ul></ul><ul><li>Conclusions </li></ul>
  4. 4. Introduction and motivations <ul><li>Existing assistive devices for deaf : ex.hearing aids </li></ul><ul><ul><li>Independent, non-interaction </li></ul></ul><ul><li>Take advantage of WSN to be a wireless assistive sensor network (WASN) </li></ul><ul><ul><li>Various device + event driver + WSN-based </li></ul></ul><ul><ul><li>Provide info. of their environment </li></ul></ul>
  5. 5. Application of WASN
  6. 6. Existing assistive device <ul><li>External assistive devices </li></ul><ul><ul><li>Hearing aid, assistive listening device </li></ul></ul><ul><ul><li>Amplification instruments : make sounds louder </li></ul></ul><ul><li>Implantable device </li></ul><ul><ul><li>External ear implantable devices </li></ul></ul><ul><ul><ul><li>Semi- implantable hearing aid </li></ul></ul></ul><ul><ul><li>Middle ear implantable devicess </li></ul></ul><ul><ul><ul><li>cochlear implant, BAHA </li></ul></ul></ul><ul><ul><li>Defect : the risk of infection, pain in surgery </li></ul></ul>
  7. 7. cochlear implant 1. 聲音處理器透過麥克風接收聲音 2. 聲音處理器內部的換能器將聲振動傳送到內固定裝置 3. 聲音處理器內部的振動換能器直接將聲音透過頭骨傳遞至耳蝸
  8. 8. Proposed system architecture <ul><li>Two scenarios : </li></ul><ul><ul><li>Smart home, smart school playground </li></ul></ul><ul><li>Sensor node platform </li></ul><ul><ul><li>Medical oriented node platform : “MediMesh” </li></ul></ul><ul><li>Network protocol design </li></ul><ul><ul><li>Response time, reliability, changing topology </li></ul></ul>
  9. 9. Sensor node platform <ul><li>MPU : TI MSP430F1611 </li></ul><ul><ul><li>Power consumption : ultra-law </li></ul></ul><ul><ul><li>Full set of analog and digital processors </li></ul></ul><ul><ul><li>Has embedded </li></ul></ul><ul><ul><li>In system flash programming </li></ul></ul><ul><li>Transceiver : Chipcon CC2420 (802.15.4) </li></ul><ul><ul><li>802.15.4 </li></ul></ul><ul><ul><li>30 levels power contral </li></ul></ul><ul><ul><li>DSSS </li></ul></ul><ul><li>SF Memory : M25P40 4 Mb </li></ul>
  10. 10. Network protocol design <ul><li>802.15.4 </li></ul><ul><li>AODV </li></ul>
  11. 11. Simulations and evaluations <ul><li>Simulator : NS2 </li></ul><ul><li>Protocol of network layer : AODV </li></ul><ul><li>Protocol of MAC and physical layer: compatible with IEEE 802.15.4 standard </li></ul><ul><li>Operate band : 2.4GHz </li></ul><ul><li>Max data rate : 250 kbps </li></ul>
  12. 12. Smart home CBR
  13. 13. Simulation results of Smart home <ul><li>Avg. packet loss rate : 0.1 % (4/3663) </li></ul><ul><li>End to end delay : 0.008s </li></ul>
  14. 14. Smart school playground <ul><li>Random waypoint mobility pattern </li></ul><ul><li>50 X 50 square-meter </li></ul><ul><li>50 nodes </li></ul>
  15. 15. Conclusions <ul><li>Potentially useful for the deaf </li></ul><ul><li>Be a supportive auxiliary </li></ul>

×