1. TIPPERS Presence Sensing

2. Motivation

3. 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.
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4. 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)
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5. Beacon is on the rise for sensing nearby objects.
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6. Presence Sensing

7. 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

8. Energy meters @ circuit breakers
Presence Data Id
confidence
Location
Person
Activity
timestamp
56abe584a4caa171fc8c9681
0.85
2099
559efcb1a11a2b6faff39d25
Enter
:20:10
56abef30b4cdc315ae69819a
0.8
2085
: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 circuit breakers
HVAC data
Physical Sensors
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9. Design and Implementation

10. Qualcomm GIMBAL beacons Android 6.0 Mobile phones
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11. 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

12. Thank You