1. 報告者 : 陳威伸 曾梓瑄

2.  Introduction › Why we need campus tour system(CTS) ? › Where can CTS be used ?  Related work  System Architectures  System Implementations › Outdoor › Indoor  The rules of indoor positioning  Demo  Conclusion

3.  Get lost in campus  Go to the destination directly  Save time for finding a path  …

4.  CTS can be used in the whole campus even inside the building

5.  RSS(Received Signal Strength) algorithm

8.  With GPS signal, the phone will obtain the latitude and longitude.

9. BSSID

10.  Our cell phone will receive the information about access points. › Use WLAN Scanning module.  BSSID : MAC address of the access point.  Rx_Level : Reception level in dBm.

11.  Rule 1: Find out the five strongest Access Point to compare with the first database (DB1).  Rule 2: Use a heavy-weighted method.

13. Part of DB1

14. Access pointsFloor numbers 00:13:C3:65:B7:501 and 2 00:13:C3:65:BE:801 and 2 00:04:E2:D6:AC:391 and 2 00:13:46:9A:8F:8C1 00:16:B6:94:12:EB1 Floor 1

15. Part of DB2 signal strength

16. Access points user101103 00:13:C3:65:B7:50 4760.543 00:13:C3:65:BE:80 576853.5 00:04:E2:D6:AC:39 79.570.5X 00:13:46:9A:8F:8C 8276.586 00:16:B6:94:12:EB 80X82 103

17.  Hardware  Software

21.  Provide a positioning system to tourists or people who are not familiar with YZU.  Combine indoor and outdoor positioning.