improved and standard user interface for power management bruce nordman lawrence berkeley national...
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Improved and Standard User Interface for
Power Management
Bruce NordmanLawrence Berkeley National Laboratory
[email protected]://eetd.LBL.gov/Controls
May, 2000
sponsor: California Energy Commission
Power Management Controls and Indicators
Overview
• Energy Implications• Facts and Assumptions• Non-Office Eqt. Controls• Office Equipment Controls• Project Elements
Power Management Controls and Indicators
Office Equipment Energy UseAnnual Electricity (TWh/year)
No Power Management
Now (ENERGY STAR)
Potential(100% Enabling) 48.8
65.5
92.6
0 20 40 60 80 100
Power Management Controls and Indicators
Energy Savings TWh/year $billion/year
Existing 27.1 2.2Potential 16.7 1.3
Current Power Mgmt. Enabling Rates:PCs: 25% Monitors: 60%Printers: 80% Copiers: 70%
Power Management Controls and Indicators
Facts• PC power management enabling rates are
low; other devices could be higher
• PM Controls and Indicators are inconsistent and often confusing or ambiguous
• Potential PC PM savings are increasing
Power Management Controls and Indicators
Assumptions• More understanding of existence and operation
of power management will lead to it being used better and more often.
• Improved and Standard User Interface elements will improve understanding.
• Existence of Standard and advocates for it will lead to adoption of it for new products.
Power Management Controls and Indicators
Our Project• Goal: Save extra energy by getting more use out of
already existing power management capability in office equipment.
• Means: Over a few years achieve a broad similarity of user experience of power management across all office equipment. Do this via a voluntary standard.
Power Management Controls and Indicators
Standard Controls
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Power Management Controls and Indicators
Cars: Gearshifts
Power Management Controls and Indicators
Phones: Number Layout
Power Management Controls and Indicators
Traffic Signs, Indicators
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Power Management Controls and Indicators
Standard International Symbols for Electronics
Power Management Controls and Indicators
Non-standard Controls: Blenders
Power Management Controls and Indicators
Non-Standard ControlsCell Phones
Power Management Controls and Indicators
Office Equipment Power Management Terms
On, Ready, Active, Idle, Standby*, Doze,
Suspend, Sleep, Deep Sleep, Low-Power,
Energy-Saver, Power-Saver, Hibernate,
Energy Star Mode, Weekly Timer, Delay
Timer, Idle Timer, Activity, Inactivity,
Auto-off, Soft-off, Off.
Power Management Controls and Indicators
Office Equipment: What Works
Power Management Controls and Indicators
• Suspend mode is known as standby mode under the Microsoft Windows 98 operating system. For systems with ACPI compliance, suspend mode is known as sleep mode” (Dell)
• stand-by mode” — Fully ready to copy but not copying. (ASTM Copier Test Procedure)• “Stand-By — … an optional operating state of minimal power reduction …” (VESA Standard)
• “Standby power — The lowest power mode in which the appliance is plugged in …” (LBNL-Leaking/Standby Electricity)
• “Standby is … the lowest power state where the system is responsive to interrupts …” (PowerPC Reference Platform)
• "Suspend is currently ignored under Windows 95/98 and Windows 2000 because the terminology is ill-defined. “ (Microsoft)
• There is no distinction between Suspend and Standby in OnNow as there was previously under APM definitions" (Microsoft)
Office Equipment:The “Standby” Problem
Power Management Controls and Indicators
What Doesn’t Work:PC Indicators
Sleep mode Awake
Power Management Controls and Indicators
PM-RelevantIEC Symbols
Save; economize Stand-by
Note: The percentage of economizing may be indicated in the figure.
Power Management Controls and Indicators
Standard PM Interface Elements
• Terms• Symbols/Icons • Indicators• Operating Metaphors
Power Management Controls and Indicators
Project Elements• Scope: Office Equipment -> All Electronics
Initial Phase:• Device Review /
Inventory of Existing Interface Elements
• Institutional Review• Literature Review• Field Research• Summary Reports
Later Phases:• Draft Standard• Industry Review /
Field Research• Revised Standard• Implementation
Power Management Controls and Indicators
Next Steps / NeedsYou provide:• Industry / Organization
Contacts• Advice, Guidance• Review of Results
We do:• Initial Research —
Results to be Published on Web
• Scope out full project plan
http://eetd.LBL.gov/Controls
Power Management Controls and Indicators
Cell Phones