Transcript NewIntroSlides - Boston University

Smart Lighting
Summer Challenge Course
Thomas Little
Overview
 Structure of the course
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 The Smart Lighting Engineering Research Center
 The Vision of the Center
 Visual Light Communications (VLC)
 The Lab Kits
Structure of the Course
 Goal: iteratively build up skills and knowledge to
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create a point to point visible light communications
system
 Use Mobile Studio and the Rhett Board to investigate
LEDs, modulation, and data communications
 A set of lab modules that will be completed in class
 Lab log books
 Final summary and presentation by the class of the
work done in lab
The Smart Lighting Center
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Fundamental advancements in LEDs –
that
enable a wide range of new
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applications in
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Exploit strength in
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Bio-imaging
Communications
Display technologies
Novel materials
Devices
Downstream systems
Strong commitment to education,
supporting underrepresented groups
10 years > $18M from National Science
Foundation
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> $50M via supplementary university, state,
industry
 Boston University role
 Communications and networking
THE 20TH CENTURY: BATHED IN ELECTRIC LIGHT
Bulbs, Tubes and Fixtures
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• Easy off and easy on
• Light Quality: White
• Hot Filaments
• Plasmas
Controls: On/Off/Dim – Human Operator
Sensors: Limited or not used
Everyone is a Lighting User
Controls
Sensors
ANOTHER REVOLUTION IN LIGHTING IS COMING
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First Wave
Philips L-Prize Bulb
• Globally, over 3000 companies making LED bulbs
• Much more efficient, even than CFLs
• Adequate white light, but that is about it
BUT LIGHT CAN DO SO MUCH MORE…
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• Color
• High Speed Switching
• Spatial Control
• Polarization Selectivity
Electric Lighting barely taps the full power of Photons
THE SECOND WAVE: SMART LIGHTING
Electric Lighting
Electronic Lighting
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Luminaires
with Components
Novel Integrated Systems
Bulbs, Sockets, Ballasts (commodity)
Semi-permanent (Durable Goods)
Limited control: on/off/dim
Fully Integrated Sensors, Controls
Different Shades of White
Any Color, any time
Complete New Capabilities and Features with Smart Lighting Systems
Data with Illumination
Illumination with Video Content
Visible Light Communications
Biochemical Sensing and Mitigation
Circadian Corrected Lighting
Self Commissioning Lighting Systems
SMART LIGHTING ERC VISION
Synthesizing Light for the Benefit of Humanity
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Engineered light for energy efficiency, health, productivity
Immersive Lighting
SMART LIGHTING SOCIETAL BENEFITS
Center Goals
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Center Goal 1
Energy Savings at 2X the current DOE
roadmap for Solid-State Lighting
Center Goal 2
Reduce Health Care Costs by 20% with
Smart Lighting
Center Goal 3
Use Smart Lighting to improve
workplace productivity by 10%
Societal Benefits
Energy Sustainability
Health, Safety and Well-Being
Productivity
ENERGY SAVINGS: EFFICIENT SOURCES, CONTROLS
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Energy Efficiency Gains in Lighting
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Energy Savings Goals
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•RGBY Lighting
•Controls
•Sensors provide
key information
1 Quad ~ 172 M barrels of oil equivalent
Adapted from the DOE SSL Report, February 2010
Quantification of solid-state lighting benefits
Energy benefits
 22% of electricity used for lighting
 LED
lighting
canSlideshow
be 20Title
and
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more efficient than incandescent and
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fluorescent lighting, respectively
 Reduction in energy consumption > 1020J (*)
 Barrels of crude oil not needed: 0.96 109 (*)
 Power plants not needed: 280 (*)
Environmental benefits
 Global warming: Reduction of CO2 emissions > 10 Gt (*)
 Acid rain: Reduction of SO2 emissions
 Mercury, Hg: Reduction of toxic Hg emissions / Hg in homes
Financial and economic benefits
 Reduction in electrical energy cost > 1012 $ (*)
(*) over 10 years, worldwide, see Schubert et al. Reports on Progress in Physics 69, 3069 (2006)
Cause: CO2
Antarctica
Cause: SO2
Czech Republic
CO2 ,SO2, NOx, Hg, U
Switzerland
Cause: Waste heat
and acid rain
United States
Lighting Impacts Health
Intensity
Spectrum
Distribution
Timing
Duration
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Visual System
Performance,
Well-being,
Satisfaction, and
HEALTH
IESNA
Circadian Disruption:
•Cancer
•Heart Disease
•Diabetes
•Obesity
What Else?
• Cognition
• Memory
• Recovery
Circadian System
Intensity
Spectrum
Distribution
Timing
Duration
15
Biochemical Sensing and Mitigation
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• Distributed Biochemical Sensing
• UVC Germicidal Mitigation
• UVA Photocatalytic Purification
Lighting – Changes are Coming
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The Right Light, Where and When You Need It
Visible Light Communications: what it is
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Boston
Synopsis
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Modulated light
Visible spectrum (you can see it)
A la ship to ship Morse code
Point to point in simplest form
Illumination + communication in the dominant scenarios
Source
Intensity
Observer
Time
Use Cases Drive the “Systems Pull”
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 Increasing safety in
transportation with
active braking
 Reducing total cost of
ownership in indoor
illumination and
industrial automation
by wire elimination
Use Cases Cont.
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3. Enabling densely-packed
indoor wireless video
streaming (e.g., in airplane)
4. Providing ubiquitous
network access where there
is human-created light
(light=smarts
[network/control/communicat
ions])
Leveraging Lighting for Communications
Indoor Wireless Access
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Visible Light Communications (VLC)
Qualities:
• Ubiquitous
• RF-free zone
• Privacy
• Localization
Why VLC? Realize the goals
Reduced Health Care Costs
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1. Enable lighting that is responsive to human needs:
quality, timing, characteristic
2. Indoor localization for assisted living, asset mgmt.
3. Enabling safety messaging, remediation protocols
Color control
From NXP
Communications & Networking is essential for
these benefits
Indoor Navigation
Why VLC? Realize the goals
Energy Efficiency & Sustainability
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1. Control of lighting for exactly
meeting human needs
2. Load management, building
management
3. Feedback for individual or
aggregations of devices
Internet &
Grid
Lighting tightly integrated into
energy management systems
Communications & Networking is essential
for these benefits
Why VLC? Realize the goals
Increased Productivity
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Immersive Lighting
1. Reconcile proliferation of
devices in ‘the internet of things’
2. Responsive low-latency
interaction as data consumption
skyrockets
3. Localized, high-data-rate
communications, and adapting to
the limitations of the medium
4. Opportunity to decrease costs
via interoperability and
reduction in TCO
Need responsiveness, speed, and ubiquity of access in the immersive
lighting field. Leverage lighting for communications.
How VLC Helps (Cooperative)
Augmenting indoor spaces with VLC access can
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significantly
improve performance of existing wireless
(WiFi) channels
Luminaires
Wired Interconnect
AP1
AP2
AP3
Network
5 Mb/s
5 Mb/s
Router and
WiFi Access Point
15 Mb/s
Strategy: Use WiFi, but offload traffic to VLC luminaires
for the downlink only
Hand-off for Mobility
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Fusion in Lighting and Display
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Diversity
MIMO
2011
Nano-plasmonics
Reference Model
Fixture
Input
Power
Power
Conversion
Color/
intensity Modulation
control
Network
Media
Signal
Conversion
Processing
(Bridging)
Enclosure
LED
Drivers
Receivers
Optical
Channel
2018
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