(12) United States Patent
`US 7,130,719 B2
`(10) Patent N0.:
`
` Ehlers et al. (45) Date of Patent: Oct. 31, 2006
`
`
`US007130719B2
`
`(54) SYSTEM AND METHOD OF CONTROLLING
`AN HVAC SYSTEM
`
`(75)
`
`Inventors: Gregory A. Ehlers, Bradenton, FL
`(US); Joseph Beaudet, Prince Georges
`VA (Us)
`(73) Assignee: Robertshaw Controls Company,
`Richmond, VA (US)
`.
`.
`.
`.
`Subject to any d1scla1mer, the term of th15
`patent is extended or adjusted under 35
`U.S.C. 154(b) by 0 days.
`(21) APP1~ N05 10523518
`
`.
`( * ) Notlce:
`
`3,181,791 A *
`4,075,699 A
`4174517 A
`4’2 17646 A
`4,218,737 A
`4,245,319 A
`4391375 A
`4,324,987 A
`4,336,462 A
`4 338 791 A
`
`5/1965 Axelrod .................... 236/44 C
`2/1978 Schneider et al.
`11/1979 M d1
`8/1980 Caélrtlagrone et al
`8/1980 Buscher et al.
`1/1981 Hedges
`9/1981 W01f
`4/1982 Sullivan, 11 et al.
`6/1982 Hedges et al.
`7/1982 Stamp Jr. et a1.
`
`(Continued)
`FOREIGN PATENT DOCUMENTS
`
`(22)
`
`Filed:
`
`Jul. 28, 2003
`
`CA
`
`2121124 A1
`
`7/1993
`
`(65)
`
`Prior Publication Data
`US 2004/0133314 A1
`Jul. 8, 2004
`
`Related U-S- Application Data
`(63) Continuation of application No. 10/402,370, filed on
`Mar. 28, 2003, now abandoned.
`
`(60) Provisional application No. 60/383,027, filed on May
`24, 2002, provisional application No. 60/368,963,
`filed on Mar. 28’ 2002‘
`
`(Continued)
`OTHER PUBLICATIONS
`
`“50 Successful DSM Programs”, The Results Center,
`1994'
`
`lists Mar.
`
`(Continued)
`
`Primary ExamineriLeo Picard
`Assistant Examinerisean Shechtman
`(74) Attorney, Agent, or FirmiAndrus, Sceales, Starke &
`S
`11 LLP
`awa ’
`(57)
`
`ABSTRACT
`
`A system and method manage delivery of energy from a
`d' t 'b t'
`tw kt
`'t
`E h 't h
`t
`161:5?033;V111; Setup]:(10:1:1101: $3213:tilosii nzgosrlke TE: :1
`least one device controllably consumes energy. The system
`includes a node and a control system. The node is coupled
`to the at least one device for sensing and controlling energy
`delivered to the device. A control system is coupled to the
`node and distribution network for delivery to the node at
`least one characteristic of the distribution network. The node
`
`controls the supply of energy to the device as a function of
`the at least one characteristic.
`
`(51)
`
`Int. Cl.
`G05D 23/00
`G06F 17/00
`G06F 19/00
`
`(
`
`)
`
`(2006.01)
`(2006.01)
`2006.01
`(
`)
`G06F 15/00
`(2006.01)
`(52) US. Cl.
`...................... 700/276; 700/299; 700/300;
`58
`F'
`ld f Cl
`'fi 70'5/41S2; 701/60; 702/130; 703(43):?
`1e
`0
`70382176217071] 2T8lr286291295296 299’
`700/500. 305/4112. 3702/60 61 62, 130’
`’
`7’02/132 1’80 3187 188
`f
`1
`3h h',
`’
`e or comp ete searc
`1story.
`
`S
`
`.
`1,
`ee app 1catlon
`
`fil
`
`(56)
`
`References Cited
`US. PATENT DOCUMENTS
`
`1,547,242 A
`
`7/1925 Strieby
`
`29 Claims, 18 Drawing Sheets
`
`ECONOMIC AND COMFORTMANAGEMENT 9 CONTROL EXAMPLE
`
`
`8 — — — MAXIMUM SAVINGS
`
`
`BALANCED SAVINGS/COMFORT
`7
`— — — MAXIMUM COMFORT
`
`, /
`
`//
`
`’
`
`14:.
`
`
`
`ALLOWEDOFFSET
`
`0
`
`4
`
`8
`
`12
`
`20
`
`24
`
`28
`
`32
`
`COST OF ENERGYIN CENTS PER KWH
`
`1
`
`NEST 1004
`
`1
`
`NEST 1004
`
`

`

`US 7,130,719 B2
`
`Page 2
`
`U.S. PATENT DOCUMENTS
`
`4,367,414
`4382544
`4466074
`4,475,193
`4,503,288
`4,511,979
`4,513,189
`4,514,594
`4,520,576
`4,521,645
`4,523,307
`4,539,562
`4,549,274
`4,567,557
`4,630,218
`4,663,775
`4,665,544
`4,697,182
`4,701,698
`4,728,949
`4,771,185
`4,772,870
`4,819,180
`4 847 554
`4:847:780
`4,847,781
`4,847,782
`4,855,922
`4 884 021
`4,888,495
`4,899,129
`4,899,217
`4,971,136
`4,977,515
`4,987,513
`4,998,097
`5,033,112
`5,045,823
`5,086,385
`5,090,024
`5,101,191
`5,109,222
`
`2:32:32:
`5,168,170
`5,170,360
`5,196,982
`5,218,552
`5 220 311
`5,263,046
`5,274,571
`5,278,862
`5,289,362
`5,301,122
`5,315,499
`5,323,307
`5,347,167
`5,414,640
`5,436,510
`5,462,225
`5,469,365
`5,475,371
`5,501,267
`5,572,438
`5,598,349
`5,675,503
`5,684,710
`5,696,695
`5,924,486
`6,070,110
`6,181,985
`
`w>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
`
`“1983 Miller 6t 31
`5/1983 Stewart
`8/1984 Jindfick 6t 31
`““984 Brown
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`$133; Eilglljzgg‘gi
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`“/1993 Vander Mey
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`1/1997
`Elliason et al.
`10/1997
`Moe et al.
`.................. 700/296
`11/1997
`Ehlers et al.
`12/1997
`Ehlers et al.
`7/1999
`Ehlers et al.
`................. 700/278
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`Shah et a1.
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`
`10/2001 Budike, Jr.
`6,311,105 B1
`6,816,757 B1* 11/2004 De La Ree et a1.
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`
`........ 700/286
`
`FOREIGN PATENT DOCUMENTS
`
`DE
`EP
`EP
`EP
`EP
`EP
`EP
`FR
`FR
`W0
`W0
`W0
`W0
`
`27 43 212
`0 163 572 A1
`0 288 413 A1
`0 534 839 A1
`0 577 532 A1
`0 580 217 A1
`0 688 085 A1
`2 645 968
`2 660 511
`W0 93/08653
`W0 94/00824
`WO 94/03989
`W0 94/09572
`
`3/1979
`12/1985
`10/1988
`3/1993
`1/1994
`1/1994
`12/1995
`10/1990
`10/1991
`4/1993
`1/1994
`2/1994
`4/1994
`
`OTHER PUBLICATIONS
`.
`“A-147DMS 350A Programm1ng Reference”, Jul. 1998, 1 page.
`“Bell of Pennyslvannia’s automatic meter reading coult mean
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`“Boosting Your Home’s IQ: Manufacturers agree on standards for
`.
`,,
`creat1ng the smart house , Technology, p. 70 (not dated).
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`“Commonwealth Edison installs Metricom’s communication net-
`”
`_
`_
`.
`work 13mm?“ erea Marx“, 1993
`“Demonstratlng smarts; br1ght home; a demonstratlon home that
`utilizes consumer electronics .
`.
`. ” Popular Science, Jul. 1991.
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`1'33
`“DMS Facilities Management System FMS2-3SSX”, Robertshaw
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`controlled load manage .
`.
`. ” PR Newswire Assoc., Jan. 19, 1994.
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`. PR Newswire Assoc., Aug. 26, 1993.
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`energy management project in Laredo, TX”, Business Wire, Mar.
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`_
`_
`_
`_
`_
`_
`“Home automatlon: what’s 1n 1t for ut111t1es?”, EPRI, Apr. 1990.
`“Honeywell, Oracle Corp. unveil joint technology and marketing
`alliance”, Electric Utility Week’s Demand-Side Report, Mar. 3,
`1994.
`“Is DSM having an impact on electric-utility credit ratings?” ,
`Electrical World, Aug. 1993.
`“Itron signs $27M contract with Baltimore Gas and Electric”, PR
`Newswire, Apr. 4, 1994.
`Johnson Controls makes entry into home energy automation market
`.
`.
`.
`, PR Newswire, Mar. 29, 1994.
`“Leading companies demonstrate home automation based on Ech-
`elon’s technology”, Business Wire, Apr. 14, 1994.
`“Lon Worksithe choice in home automation”, Motorola, Mar.
`1994.
`“MicroSmaIt Control Network (Features and Benefits)”, Siebe
`Environmental Controls, 1993, 10 Pages.
`“MicroSmaIt Control Network System Overview”, Siebe Environ-
`mental Controls, Nov. 1993, pp. 1-12.
`“MicroSmaIt MSC-NC/NCM (Network Communications Module)
`Installation Guidelines”, Siebe Environmental Controls, Jun. 1993,
`pp. 1-9.
`“PGW to begin automatic meter reader installations in 500,000
`homes in Jun.”, PR Newswire Assoc., Apr. 2, 1993.
`
`.
`
`2
`
`

`

`US 7,130,719 B2
`Page 3
`
`“PLC features & specifications”, Regency Electronics, Inc. date
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`Transmission & Distribution, Apr. 1994.
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`1992.
`“Scientific-Atlanta, Bell Atlantic to Offer Cost-Effective Informa-
`tion”, PR Newswire, Sep. 23, 1991 (Mary Nagelhout).
`“Section 2 Standard Program Functions (DMS 350A Programming
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`“Section 6: User Defined Programming (DMS 350A Programming
`Reference)”, Apr. 1989, pp. 6-11 to 6-12 (double-sided).
`“Using the line sharing switch in power utility load stufy applica-
`tion”, Teltone Telesolutions, 1993.
`“Variable electric rates”, Transtext.
`Cain, Charles J., “Metering gets real”, Fortnightly, Apr. 1, 1994, pp.
`39-40.
`Coleman, Andrew et al., “Competitive edge-Power View: A DSM-
`focused technology”, Fortnightly.
`Dawson, Fred, “Energy saver can support voice and data”,
`Multichannel News, Oct. 21, 1991.
`Eaton Corporation, Cutler-HammeriWestinghouse Products,
`Power Distribution Components Division, “IMPACC System Com-
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`page, contents listing and pp. E-1 through E-4).
`Home Automation Laboratories, Fall 1994 Catalog.
`Jones, DavidA., “Cutting edge; three houses that break the rules and
`break new ground .
`.
`. ”, Builder Info Access, Nov. 1993.
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`
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`.
`.
`, The Electricity Journal, Nov. 1993.
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`
`* cited by examiner
`
`3
`
`

`

`U.S. Patent
`
`Oct. 31, 2006
`
`Sheet 1 0f 18
`
`US 7,130,719 B2
`
`1.06
`
`1.16 K!
`
`1.12
`
`——_————_—______———_——_—_—__—._—_.—.._—_
`
`1.10D
`
`.5”
`
`MM
`
`NODE
`
`.
`EISM.
`
`1.18-f'
`
`METERHVG
`NODE
`
`comm
`NODE
`
`LOAD
`
`CONTROL
`
`NODE
`
`{1
`
`1 08A
`
`MEIER”)
`DEVICE
`
`1.103
`
`1 08B
`CONTROLLED '
`DEVICE
`
`CONTROLLED
`
`ANDMETERED
`
`DEVICE
`
`USER
`
`INTERFACE
`1.14
`
`1.10C
`
`1.08C
`
`'1
`
`1.04
`
`1 32
`
`DURING A IST 'HME PERIOD
`
` CUT OFF ENERGY TO THE DEVICE
`
`4
`
`

`

`U.S. Patent
`
`Oct. 31, 2006
`
`Sheet 2 of 18
`
`US 7,130,719 132
`
`EOHmBU E.“8.“a.“
`
`<1
`3
`
`Imgpm.E.
`
`5
`
`

`

`U.S. Patent
`
`Oct. 31, 2006
`
`Sheet 3 0f 18
`
`US 7,130,719 B2
`
`
`
`
`
`
`I TWO WAY
`
`NODE
`COMMUNICATIONS
`
`PROCESSOR
`I CHANNEL
`
`
`
`CONTROL POINT
`CONFIGURATION
`
`
`INTERFACE
`
`
`
`
`
`OTHER NODES OR
`PROGRAMMING DEVICE
`
`2 08
`'
`
`Figure 2A
`
`1.10
`
`1.08A
`
`
`
`
`MM
`
`
`
`
`
`I
`
`INODE
`TWOWAY I
`COMMUNICATIONS - '
`METERING
`C
`L
`PROCESSOR
`MODULE
`
` CONTROL POINT
`CONFIGURATION
`
`INTERFACE
`
`6
`
`

`

`U.S. Patent
`
`Oct. 31, 2006
`
`Sheet 4 0f 18
`
`US 7,130,719 B2
`
`1.083
`2.14
`
`
`CONTROLLED
`
`
`
`CONTROL POINT
`
`CONFIGURATION
`
`INTERFACE
`
`
`
`
`2.08
`
`jigure 2C
`
`2.14
`
`MAINS
`
`COUPLER
`
`2.1
`
`2
`
`1.10
`
`\‘
`
`I
`
`INTERFACE
`
`
`
`TWO WAY rCOMMUNICATIONS
`
` CONTROL POINT
`
`CONHGURATTON
`
`
`1.08C
`
`
`AND CONTROLLED
`
`
`
`DEVICE
`
`NUDE
`PROCESSOR
`
`METERING
`
`MODULE
`
`_Eigure 2D
`
`7
`
`

`

`U.S. Patent
`
`Oct. 31, 2006
`
`Sheet 5 0f 18
`
`US 7,130,719 B2
`
`GATEWAYNODE
`
`224
`
`2'20
`{J
`
`2.2011 Eff
`
`2'22
`{J
`
`LOAD METERING NUDE
`
`2.203
`
`2.20C
`
`2.20D
`
`2.20}:
`
`2.22A
`
`2.2213
`
`2.22c
`
`2.22D
`
`2.2213
`
`2201-"
`
`2.221?
`
`WWW 2.225:
`220G 1100;010me
`PHOTOVOL‘IIAC
`
`2.2aH
`
`SYSTEM
`
`212E
`
`fiigure 2E
`
`3.02
`
`3.04
`
`
`
`8
`
`

`

`U.S. Patent
`
`Oct. 31, 2006
`
`Sheet 6 0f 18
`
`US 7,130,719 B2
`
`340
`
`1.30D
`
`3.10
`
`/
`
`INDOOR THERMOSTAT
`
`3.10A
`
`
`
`
`
`
`
`
` 3.10B
`3.10C
`
`IHERMOSTAT
`
`HUNIIDITY SENSOR
`
`OTHER SENSORS
`
`
`
`GATEWAY
`
`NODE
`
`1.101)
`
`figure 33
`
`OTHER NODES
`
`
`
`
`
`AND DEVICES
`
`1.08, 1.10
`
`ECONOMIC AND COMPORTMANAGEMENT 8‘ CONTROL EXAMPLE
`
`
` — — — MAXIMLUVI SAVINGS
`
`
`BALANCED SAVINGS / COMFORT
`— - — MAXIMUM COMFORT
`
`Ink
`
` ALLOWED
`OFFSET
`
`0
`
`4
`
`8
`
`12
`
`16
`
`20
`
`24
`
`28
`
`32
`
`COST OF ENERGYIN CENTS PER KWH
`
`iigure 3C
`
`9
`
`9
`
`

`

`U.S. Patent
`
`Oct. 31, 2006
`
`Sheet 7 0f 18
`
`US 7,130,719 B2
`
`ECONOMIC AND COMFORTMANAGEMENT 8 CONTROL EXAMPLE
`
`3.12A
`
`3.14A-1 ”’/
`
`3.16
`
`7”:/ '
`’/'/ ,,,,,,,,, L3.143
`/ ”””””””
`,/;’:Z/"’:——————————————
`L3 14C
`3.123
`
`3.120
`
`"/‘7
`
`’
`
`80
`
`79
`
`78
`
`76
`
`75
`
`74
`
`73
`
`72
`
`
`
`INDOORSETPOINT
`
`16
`
`32
`
`48
`
`64
`
`80
`
`96
`
`112
`
`128
`
`INTERVALS OF TIME - 4 MINUTES PER INTERVAL
`
`_E_igure 3D
`
`ECONOMICAND COMFORTMANAGEMENT 8 CONTROL EXAMPLE
`
`
`
`——-THERMAL GAINRATE
`
`—HVACRUN%
`
`
`
`HVACRHNTIME%
`
`
`
`Ix)OJ
`
`H
`
`
`
`THERMALGAIN
`
`RATEPERHOUR
`
`3
`
`6
`
`9
`
`12
`
`15
`
`18
`
`21
`
`24
`
`INTERVALS OF TIME - HOLHQ INTERVALS
`
`iigure 3E
`
`10
`
`10
`
`

`

`U.S. Patent
`
`Oct. 31, 2006
`
`Sheet 8 0f 18
`
`US 7,130,719 B2
`
`ECONOMIC AND COMFORTMANAGEMENT 8 CONTROL EXAMPLE
`
`70
`
`78
`
`MAXIMLUVI ECONOMY — — —
`
`
`77 MAXIMUM COMFORT
`
`
`
`0
`
`16
`
`32
`
`48
`
`64
`
`80
`
`96
`
`112
`
`128
`
`INTERVALS OF TIME - 4 MINUTES PER INTERVAL
`
`figure 3P
`
`ECONOMIC AND COMFORT MANAGEMENT 61' CONTROL EXAMPLE
`
`E
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`jigure 3G
`
`11
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`11
`
`

`

`U.S. Patent
`
`Oct. 31, 2006
`
`Sheet 9 0f 18
`
`US 7,130,719 B2
`
`4.06A 4.063
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`

`

`U.S. Patent
`
`Oct. 31, 2006
`
`Sheet 10 0f 18
`
`US 7,130,719 B2
`
`4.24
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`13
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`
`

`

`U.S. Patent
`
`Oct. 31, 2006
`
`Sheet 11 0f 18
`
`US 7,130,719 B2
`
`Thermostat Scheduling
`
`fly
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`f' 9
`Weekend
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`4.36
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`
`
`
`14
`
`

`

`U.S. Patent
`
`Oct. 31, 2006
`
`Sheet 12 0f 18
`
`US 7,130,719 B2
`
`Configure Alert
`
`4.52
`
`4.54
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`4.56
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`Note: You may add the secondary email as another channel by updating personal data, Click here to update account personal data
`
`Reports
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`

`

`U.S. Patent
`
`Oct. 31, 2006
`
`Sheet 13 of 18
`
`US 7,130,719 B2
`
`'
`
`I . y Temperature Report
`
`Tampa-alum Data for Tuudny, Much 15, 2‘33
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`Tunperahu'e Data
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`'Total Cost : $157 Total Usage 211.54 kWh
`’Couu u'e estimate- of the actual can of may um don nut Include hm or otha surcharges
`
`Energy Consumption and Cost for Tuesday, March 18, 2003
`
`40 76
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`200
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`
`16
`
`16
`
`

`

`U.S. Patent
`
`Oct. 31, 2006
`
`Sheet 14 of 18
`
`US 7,130,719 B2
`
`4.86
`
`4.883
`
`4.88C
`
`Configuration Data
`Personal Data
`
`Thermostat Data
`
`Your personal account settings
`
`Your thermostat data
`
`Information about your home
`
`4.88A
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`
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`
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`4' 92
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`fig Cooling
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`jigure 40
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`Apply
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`
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`
`jigure 4Q
`
`17
`
`

`

`U.S. Patent
`
`Oct. 31, 2006
`
`Sheet 15 of 18
`
`US 7,130,719 B2
`
`Program Participation
`
`<1
`
`Supply Type
`Participate Product Name
`On Demand
`Emergency AC Curtailment
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`:12
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`18
`
`18
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`

`

`U.S. Patent
`
`Oct. 31, 2006
`
`Sheet 16 0f 18
`
`US 7,130,719 B2
`
`3 ecu-la! Dish-lhulion Network for an
`m mm
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`19
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`

`

`.
`
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`
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`0'.
`
`U.S. Patent
`
`Oct. 31, 2006
`
`Sheet 17 0f 18
`
`US 7,130,719 B2
`
`5| ecu-ital Distribution Network fut dual
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`

`

`U.S. Patent
`
`Oct. 31, 2006
`
`Sheet 18 of 18
`
`US 7,130,719 B2
`
`Pro am Definitions
`5’
`
`5.58
`
`Supply Type: © OnDemand 0 Scheduled “’5. 62
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`Total Usage : 647.32 kWh
`
`Enexgy Consumption for Tuesday , March 18 ,2003
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`5.76
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` _P_igure 51
`
`21
`
`

`

`US 7,130,719 B2
`
`1
`SYSTEM AND METHOD OF CONTROLLING
`AN HVAC SYSTEM
`
`RELATED APPLICATIONS
`
`The present application is a continuation of and claims
`priority to US. patent application Ser. No. 10/402,370 filed
`Mar. 28, 2003, now abandoned which claims priority to US.
`Provisional Patent Application Ser. No. 60/368,963 filed
`Mar. 28, 2002 and to US. Provisional Patent Application
`Ser. No. 60/383,027 filed on May 24, 2002, all of which are
`hereby incorporated by reference.
`
`FIELD OF THE INVENTION
`
`The present invention relates generally to the delivery of
`a commodity, and more particularly, to a system and method
`for managing the delivery and usage of a commodity such as
`electricity, natural gas, steam, water, chilled or heated water,
`or potable or recycled water.
`
`BACKGROUND OF THE INVENTION
`
`Traditionally, utilities have done an excellent job of
`providing a reliable source of power to their customers.
`Utilities do this by accurately predicting consumer demand
`and then ensuring that
`they have adequate generation
`resources available to meet
`that demand. Historically,
`demand for power increases each year during peak heating
`and cooling months, resulting in a need for ever increasing
`amounts of generation capacity. A review of the peak period
`demand clearly show that the need for a substantial amount
`of new generation assets could be eliminated if there was a
`way to shift some of the demand from peak to off peak times.
`The deregulation of the electric industry has heightened
`concerns over power outages, price volatility and how the
`eventual outcome will impact the economy and our way of
`life.
`
`For example, recent events in California have captured the
`headlines and amplify these concerns. California suffers
`from 10 years of load growth with no new generation
`facilities being built
`to meet
`the demand. Internet data
`centers like the one in San Jose represent unanticipated new
`demands for power 24 hours a day equal to that of 60,000
`homes. State mandated deregulation activities forced the
`major utilities to sell off their generation assets resulting in
`them having to buy the power they used to self generate
`from others.
`
`Demand reduction programs and more advanced controls
`have been proposed to assist in reducing demand during
`peak times.
`Currently, utilities do offer demand reduction programs to
`their customers. These programs are designed to shift loads
`out of peak periods by providing a financial incentive for
`consumers to move loads to a time when it is less expensive
`for the utility to produce or obtain power. Time of day rate
`is an example of such a program.
`Another type of program offered by utilities is the tradi-
`tional Demand Side Management (DSM) program. This
`type of program provides the customer a monthly credit for
`allowing the utility to interrupt power to major loads in their
`home during peaks or emergencies.
`While both of these programs have been shown to work,
`they each have their problems. Time of day rate programs
`may be difficult for customers to understand. Therefore these
`programs have a very low participation rate among the
`customer base. DSM programs, on the other hand, have a
`
`2
`
`much higher participation rate. However, DSM load sheds
`are seldom exercised by the utility. And, when the utility
`does exercise a load shed, the resulting interruption of power
`tends to affect customer comfort,
`thereby causing large
`numbers of customers to drop out of the program.
`In
`addition,
`current DSM programs
`cannot differentiate
`between those consumers that contribute to a load control,
`and those that don’t, while providing incentive credits to all
`who sign up.
`While both time of day rates and DSM programs can be
`effective, each have challenges in the area of customer
`satisfaction that erode their usefulness. In addition, utilities
`earn little revenue from these types of offerings and there-
`fore look to new generation as a more economically viable
`option.
`Thermostats, thermostatic control devices and environ-
`mental control systems have been designed, manufactured
`and placed in use for many years. These devices are prima-
`rily designed to sense the temperature inside a site and based
`on occupant designated setting, activate the heating and/or
`air conditioning system or systems to maintain a comfort
`level based on the occupants designated level of comfort.
`There are two main types of design for these devices: a
`standard single control device or a dual control system.
`The standard single control device can be set to activate
`a heating or cooling system based upon a manual switch to
`select either system and a degree setting mechanism to select
`the desired temperature to heat or cool to if the temperature
`falls or rises below or above the occupant designated set
`point. A dual control system is attached to both a heating and
`cooling system which has two set points, one for the heating
`system activation and one for the cooling system activation.
`With this type of a control, the user sets a desired minimum
`temperature, below which the heating system will be acti-
`vated to raise the temperature during winter seasons, and a
`maximum temperature, above which the cooling system will
`be activated to drop the temperature during summer seasons.
`This type of temperature control device provides the
`occupant the convenience of not having to manually select
`either the heating or cooling system, as is the case of the
`standard single control device, and allows the occupant to
`define a temperature range between which they are com-
`fortable. Using these two main types of design as a base line,
`there are many variations, which have been developed over
`time. Over the years, these sensing and control devices have
`moved from traditional bi-metal contractors to more sophis-
`ticated electronic devices over the years, and have incorpo-
`rated the ability to be programmed with multiple set points
`for both heating and cooling as well as having the ability to
`activate these different set points based on time of day, day
`of week, and/or externally generated control signals from
`utility companies indicating a fixed cost tier that is in effect,
`e.g., low, medium, high & critical, and to interface with an
`infra-red motion sensor that automatically sets back the
`temperature to a predetermined point based on the presence
`of a person in the area. However, most end use consumers
`do not have the time, experience, and/or access to data to
`monitor, track, and use these devices.
`The present invention is aimed at one or more of the
`problems set forth above.
`
`SUMMARY OF THE INVENTION
`
`10
`
`15
`
`20
`
`25
`
`30
`
`35
`
`40
`
`45
`
`50
`
`55
`
`60
`
`65
`
`invention, a system and
`In one aspect of the present
`method manage delivery of energy from a distribution
`network to one or more sites. Each site has at least one
`
`device coupled to the distribution network. The at least one
`22
`
`22
`
`

`

`US 7,130,719 B2
`
`3
`device controllably consumes energy. The system includes a
`node and a control system. The node is coupled to the at least
`one device for sensing and controlling energy delivered to
`the device. A control system is coupled to the node and
`distribution network for delivering to the node at least one
`characteristic of the distribution network. The node for
`
`controls the supply of energy to the device as a function of
`the at least one characteristic.
`
`In another aspect of the present invention, a method of
`shifting energy requirements from a first period of time is
`provided. The method includes the steps of measuring
`energy usage of a controlled device operated by a customer,
`cutting of energy to the controlled device during the first
`time period, and providing a rebate to the customer based on
`actual energy savings as a function of the first time period,
`the measured energy usage, and known power requirements.
`In still another aspect of the present invention, a thermo-
`stat device for controlling a heating and/or cooling system
`through interaction with a user is provided. The heating
`and/or cooling system are supplied with energy through a
`power distribution network. The thermostat includes a con-
`trol panel for receiving input from the user and a display
`coupled to the control panel for visually presenting infor-
`mation to the user. The thermostat device is adapted to
`receive a characteristic of the energy being supplied and for
`displaying the characteristic on the display.
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`Other advantages of the present invention will be readily
`appreciated as the same becomes better understood by
`reference to the following detailed description when con-
`sidered in connection with the accompanying drawings
`wherein:
`
`FIG. 1A is a block diagram of an energy management
`system, according to an embodiment of the present inven-
`tion;
`FIG. 1B is a diagrammatic illustration of one implemen-
`tation of the energy management system of FIG. 1A;
`FIG. 1C is a flow diagram of a process for managing
`energy delivery according to an embodiment of the present
`invention;
`FIG. 2A is a block diagram of a gateway node used in the
`energy management system of FIG. 1A;
`FIG. 2B is a block diagram of a metering node used in the
`energy management system of FIG. 1A;
`FIG. 2C is a block diagram of a control node used in the
`energy management system of FIG. 1A;
`FIG. 2D is a block diagram ofa load control node used in
`the energy management system of FIG. 1A;
`FIG. 2E is a block diagram of an implementation of the
`energy system of FIG. 1A at a customer site;
`FIG. 3A is an illustration of an advanced thermostat
`
`device, according to an embodiment of the present inven-
`tion;
`FIG. 3B is a block diagram of the advanced thermostat
`device of FIG. 3A;
`FIGS. 3C73G are graphs illustrating an exemplary eco-
`nomic and comfort management control strategy, according
`to an embodiment of the present invention;
`FIG. 4A is a graphical illustration of a customer GUI,
`according to an embodiment of the present invention;
`FIG. 4B is a graphical illustration of a control panel of the
`GUI of FIG. 4A;
`FIG. 4C is a graphical illustration of a virtual thermostat
`of the GUI of FIG. 4A;
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`10
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`15
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`20
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`25
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`30
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`35
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`40
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`45
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`50
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`55
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`60
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`65
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`4
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`FIG. 4D is a graphical illustration of an occupancy mode
`screen of the G