校園手機導覽系統 campus tour system for cell phone

報告者 : 陳威伸 曾梓瑄

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

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

CTS can be used in the whole campus even inside the building

RSS(Received Signal Strength) algorithm

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

BSSID

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 .

Rule 1: Find out the five strongest Access Point to compare with the first database (DB1).

Rule 2: Use a heavy-weighted method.

Part of DB1

Access points Floor numbers

00:13:C3:65:B7:50 1 and 2

00:13:C3:65:BE:80 1 and 2

00:04:E2:D6:AC:39 1 and 2

00:13:46:9A:8F:8C 1

00:16:B6:94:12:EB 1

Floor 1

Part of DB2signal strength

Access points user 101 103

00:13:C3:65:B7:50 47 60.5 43

00:13:C3:65:BE:80 57 68 53.5

00:04:E2:D6:AC:39 79.5 70.5 X

00:13:46:9A:8F:8C 82 76.5 86

00:16:B6:94:12:EB 80 X 82

103

Hardware

Software

Provide a positioning system to tourists or people who are not familiar with YZU.

Combine indoor and outdoor positioning.