Energy utilization controller and control system and method

• US 5,640,153 A
• Filed: 07/12/1996
• Issued: 06/17/1997
• Est. Priority Date: 12/02/1994
• Status: Expired due to Term

• Current Assignee: Siemens Industry Incorporated (Siemens AG)
• Original Assignee: Excel Energy Technologies, Ltd. (Simens, Inc.)
• Inventors: Hildebrand, Carlton R., Hildebrand, Paul N., Knight, T. Frank, Lawrence, Kelley A.
• Primary Examiner(s): Holloway, III, Edwin C.
• Application Number:
  US08/679,157
• Time in Patent Office: 340 Days
• Field of Search: 340/825.06, 340/825.44, 340/825.07, 340/825.47, 340/825.69, 379/57, 379/102, 379/56
• US Class Current: 340/7.1
• CPC Class Codes: F24F 11/30 for purposes related to the operation of the system, e.g. for safety or monitoring
• CPC Class Codes: F24F 11/57 using telephone networks
• CPC Class Codes: F24F 11/62 characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
• CPC Class Codes: G05D 23/1905 associated with tele control

Abstract

Control data to change any of various parameters in energy management systems that control energy consumption devices, such as heating and air conditioning equipment, is transmitted from a remote location, through a paging network, to a plurality of paging data receivers connected to respective energy management systems. The paging data receivers respond to a common call and pass the accompanying control data to their respective energy management systems, which individually react depending on whether one or more predetermined addresses is/are within the control data. A response to the remote site can be provided by an energy management system through the commercial telephone network.

Claims

1. A method of controlling energy utilization at a plurality of buildings having respective heating, ventilating and air conditioning equipment, said method comprising steps of:

(a) using, through a selected one of a plurality of control signal generation locations, a pre-existing communication infrastructure to communicate with a plurality of pagers respectively connected to a plurality of energy management systems respectively located at a plurality of buildings and respectively connected to heating, ventilating and air conditioning equipment thereat, for controlling temperature setpoints in the energy management systems, wherein the pre-existing communication infrastructure includes a paging network which transmits data in response to data input into the paging network through the selected control signal generation location, wherein said step of using a pre-existing communication infrastructure includes transmitting through the paging network one pager addressing code and a stream of data, the stream of data including both energy management system address data and energy management system control data, said transmitting including inputting into the energy management system control data information defining a temperature setpoint change and whether the change is an incremental increase or decrease of, or a replacement of, a pre-existing temperature setpoint;

(b) receiving the transmitted pager addressing code and the stream of data with the plurality of pagers, wherein each pager is programmed to respond to the same pager addressing code and each energy management system includes data storage memory;

(c) receiving the stream of data through a respective one of the pagers and storing the stream of data in the data storage memory of the respective energy management system in response to the pager connected to the respective energy management system receiving the pager addressing code for which the pager is programmed;

(d) determining within each respective energy management system having the stream of data stored in the data storage memory thereof whether that respective energy management system is addressed by the energy management system address data of the stored stream of data; and

(e) with each energy management system that determines it is addressed by the energy management system address data, automatically changing temperature setpoints in the respective energy management system in response to the energy management system control data of the stored stream of data so that the respective energy management system causes incremental temperature changes to occur in the respective building in response to the stored data.

2. A method as defined in claim 1, further comprising automatically transmitting, through a commercial telephone network from the energy management system to at least one of the control signal generation locations, responsive data from each energy management system determined to be addressed in said step (d).

3. A method as defined in claim 1, wherein said step (a) includes transmitting from a computer, through a modem to a commercial telephone network, and from the commercial telephone network through a commercial paging network.

4. A method as defined in claim 1, wherein said step (a) includes transmitting from a hardwired telephone set, through a commercial telephone network, and from the commercial telephone network through a commercial paging network.

5. A method as defined in claim 1, wherein said step (a) includes transmitting through a cellular telephone network to a commercial telephone network, and from the commercial telephone network through a commercial paging network.

6. A method as defined in claim 1, wherein said step (a) includes transmitting through a private paging network.

7. A method as defined in claim 1, wherein:

the energy management system address data includes at least one of a plurality of hierarchical addresses, each of which hierarchical addresses designates different groups of energy management systems which are to respond to the received data, which different groups range from a single energy management system to all the energy management systems within a predetermined region of communication; and

said step (e) is performed by an energy management system included in a group designated by a hierarchical address received by the energy management system.

8. A method as defined in claim 7, wherein the hierarchical addresses include six message codewords defining a power utility region address, a transmission line address, a substation address, a major distribution feeder address, a minor distribution feeder address, and an individual pager address.

9. A method as defined in claim 1, wherein said step (a) includes inputting a single predetermined pager telephone number and the stream of data into a commercial telephone network.

10. A method of controlling energy utilization at a plurality of buildings having respective heating, ventilating and air conditioning equipment, said method comprising steps of:

(a) using, through a selected one of a plurality of control signal generation locations, a pre-existing communication infrastructure to communicate with a plurality of pagers respectively connected to a plurality of energy management systems respectively located at a plurality of buildings and respectively connected to heating, ventilating and air conditioning equipment thereat, for changing temperature setpoints used in the energy management systems, wherein the pre-existing communication infrastructure includes a paging network which generates a predetermined capcode and which transmits data with the predetermined capcode in response to data input into the paging network, wherein said step of using a pre-existing communication infrastructure includes transmitting through the paging network a frame synchronization code, one capcode and a stream of data, the stream of data including both energy management system address data and energy management system control data, said transmitting including inputting into the energy management system control data information defining a temperature setpoint change and whether the change is an incremental increase or decrease of, or a replacement of, a pre-existing temperature setpoint;

(b) receiving the transmitted predetermined capcode and the stream of data with the plurality of pagers, wherein each pager is programmed to respond to the same predetermined capcode and each energy management system includes a respective microprocessor and respective data storage memory;

(c) receiving the stream of data from a serial data port of a respective one of the pagers through an asynchronous data port of the microprocessor of the respective energy management system and storing the stream of data in the data storage memory of the respective energy management system in response to the pager connected to the respective energy management system receiving the predetermined capcode for which the pager is programmed, wherein the microprocessor operates at a faster speed than the transmission speed of the stream of data such that the microprocessor stores the data byte by byte in the data storage memory;

(d) determining within each respective energy management system having the stream of data stored in the data storage memory thereof whether that respective energy management system is addressed by the energy management system address data of the stored stream of data; and

(e) with each energy management system that determines it is addressed by the energy management system address data, automatically changing temperature setpoints in the respective energy management system in response to the energy management system control data of the stored stream of data so that the respective energy management system causes incremental temperature changes to occur in the respective building in response to the stored data.

11. A method as defined in claim 10, further comprising automatically transmitting, through a commercial telephone network from the energy management system to at least one of the control signal generation locations, responsive data from each energy management system determined to be addressed in said step (d).

12. A method as defined in claim 10 wherein said step (a) includes transmitting from a computer, through a modem to a commercial telephone network, and from the commercial telephone network through a commercial paging network.

13. A method as defined in claim 10, wherein said step (a) includes transmitting from a hardwired telephone set, through a commercial telephone network, and from the commercial telephone network through a commercial paging network.

14. A method as defined in claim 10, wherein said step (a) includes transmitting through a cellular telephone network to a commercial telephone network, and from the commercial telephone network through a commercial paging network.

15. A method as defined in claim 10, wherein said step (a) includes transmitting through a private paging network.

16. A method as defined in claim 10, wherein:

the energy management system address data includes at least one of a plurality of hierarchical addresses, each of which hierarchical addresses designates different groups of energy management systems which are to respond to the received data, which different groups range from a single energy management system to all the energy management systems within a predetermined region of communication; and

said step (e) is performed by an energy management system included in a group designated by a hierarchical address received by the energy management system.

17. A method as defined in claim 16, wherein the energy management system address data includes six message codewords defining a power utility region address, a transmission line address, a substation address, a major distribution feeder address, a minor distribution feeder address, and an individual pager address.

18. A method as defined in claim 10, wherein said step (a) includes inputting a single predetermined pager telephone number and the stream of data into a commercial telephone network.