Bluetooth PositioningVAHID SHOKRISAEID BORHANIEHSAN HAMZEI

Introduction

open platform specification for a radio frequency communication protocol for wireless devices.

2400 - 2483.5 MHz frequency range There are three classes of Bluetooth devices:

Class 1 :33 m Class 2 :10 m Class 3 :3 m

Architectures

Architectures

Architectures

Architectures

Challenges – distance calculation from rssi Theoretical Relation Between Distance and RSSI:

1-

2-

Challenges – distance calculation from rssi

Depends on device… Unstable for 1 device… Better result after pairing…

1 2 3 4 5 6 7 8 9 10

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

Bluetooth Distance/RSSI

Xperia TXNokia6270

Challenges – Platform & Language

1- Windows Platform Problem (HCI layer) 2- Linux need to install bluz package using

command: Sudo apt-get install bluz

Language Test (.Net (32feet), Java (bluecove), android)

We choose android!!!

Component diagram

Class diagram

References

Atlantis: Location Based Services with Bluetooth, Jason Yipin Ye , Department of Computer Science, Brown University

The Official Bluetooth Membership site: https://www.Bluetooth.org

http://www.stackoverflow.com/questions/13705647/finding-distance-from-rssi-value-of-bluetooth-low-energy-enabled-device

http://www.codeproject.com/Articles/783073/A-Simple-Android-SQLite-Example

http://www.mkyong.com/android/android-activity-from-one-screen-to-another-screen/

thanks…