TIPPERS Presence Sensing

Motivation

GPS is incapable of pinpointing the location of user within a building GPS is incapable of pinpointing the location of user within a building. To determine a person’s presence, we need help from other sensors. 4/5/2019

Other sensing technologies Infrastructure Mobile Phone (participants 2 → 50) Raspberry-PI (probe request sniffer, 2→50) PC Temperature (216) [UCI facilities] GPS Motion CPU Beacon (16 → ~50) Accelerometer Temperature Memory HVAC (116) [UCI Facilities] Light Gas Idleness Pressure Gyroscope Humidity Process Wi-Fi AP (64) [UCI OIT] Proximity ... Power Outlet (10 – in meeting room) .. Energy meters* (1 / circuit breaker, approx. 500) Camera (20 covering all public areas) 4/5/2019

Beacon is on the rise for sensing nearby objects. 4/5/2019

Presence Sensing

Presence Application Examples Concierge welcomes the visitor to Bren Hall and introduces them with useful information. (e.g. building information such as restrooms, water faucets, meeting rooms, and location of individuals in the contact list, events in calendar) Noodle a smart meeting organization tool which enables the organizer and participants to track each other in real-time (e.g., “Claire has arrived at the meeting, Sarah is 5 minutes away”). Also, enables organizer to record meetings if meeting in appropriately instrumented space. 4/5/2019

Energy meters @ circuit breakers Presence Data Id confidence Location Person Activity timestamp 56abe584a4caa171fc8c9681 0.85 2099 559efcb1a11a2b6faff39d25 Enter 2016-01-29-14:20:10 56abef30b4cdc315ae69819a 0.8 2085 2016-01-29-08:20:10 … Transformation from raw sensor data to presence information Transformation/ semantic interpretation Wifi Access point Probe-sniffer Video cameras Mobile phone beacon PC based sensor Power outlet meters Energy meters @ circuit breakers HVAC data Physical Sensors 4/5/2019

Design and Implementation

Qualcomm GIMBAL beacons Android 6.0 Mobile phones 4/5/2019

From one office to multiple From one mobile to multiple How to scale From one office to multiple From one mobile to multiple Other form factors Wearables IPhone Privacy-aware technologies Inference via event detection Trajectory discovery from Wi-Fi sensing … 4/5/2019

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