alps the acoustic location processing system patrick lazik, niranjini rajagopal, oliver shih, bruno...
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ALPSThe Acoustic Location
Processing SystemPatrick Lazik, Niranjini Rajagopal,
Oliver Shih, Bruno Sinopoli and Anthony Rowe
Electrical and Computer Engineering DepartmentCarnegie Mellon University
Use near-ultrasound communication Decodable using existing mobile hardware Provide accurate indoor localization
Sub-room level (sub meter) Pulse compression
Highly-scalable Easy to deploy
Overview
System Architecture
Beacon Ultrasound
BLE Data
Beacon
PhoneNetwork Master
802.
15.4
Syn
c
Hardware Revisions
Generation 1 (SenSys ‘12)
Generation 2
Generation 3 (IPSN ‘14 Loc. Comp.)
Generation 4 (RTAS ‘15)
Generation 5
Ultrasound Transmitter PCB
Ultrasound Transmitter PCB with BLE
Receiver
From TDOA to TOF
Underspecified Ranging
Obstacles
?Time Synchronization
ALPS in Action
Coming Soon…• Auto floor-plan mapping/setup• IMU based tracking
THANK YOU!QUESTIONS?
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