Weighted setback reporting thermostat

• US 6,549,870 B2
• Filed: 12/20/2000
• Issued: 04/15/2003
• Est. Priority Date: 12/20/2000
• Status: Active Grant

• Current Assignee: Carrier Corporation (Carrier Global Corporation)
• Original Assignee: Carrier Corporation (Carrier Global Corporation)
• Inventors: Proffitt, Jerry L., Archacki, Raymond J. Jr.
• Primary Examiner(s): Barlow, John
• Assistant Examiner(s): Bhat, Aditya S
• Application Number:
  US09/740,654
• Publication Number:
  US 20020077774A1
• Time in Patent Office: 846 Days
• Field of Search: 702/130, 702/178, 364/138, 364/505, 236/46, 236/47, 236/78, 236/51, 340/825.31, 621/80
• US Class Current: 702/130
• CPC Class Codes: G04F 1/005 using electronic timing, e.g. counting means pulse time delay arrangements H03K5/13; modifications of electronic switches for introducing a time delay before switching H03K17/28
• CPC Class Codes: G05D 23/1904 variable in time

Abstract

A thermostat receives requests to enter into setback modes of operation whereby at least one setpoint normally used by the thermostat is changed. The thermostat is operative to compute the integral of change in setpoint temperature over time during each setback mode of operation. The thermostat is also operative to maintain a running total of such computed integrals of change in setpoint temperature over time in order to respond to any request for such computed integrals. The thermostat is furthermore operative to set the total of such computed integrals of change in setpoint temperature over time equal to zero in response to a request to clear the total of such computed integrals of change in setpoint temperature over time. The thermostat will furthermore compute the integral of temperature offset occurring over any time left in any present setback mode of operation after implementing a requested clearing so as to thereby initiate the computation of a new running total of computed integrals of temperature offset occurring over time spent in setback modes of operation that are implemented after the clearing.

Claims

1. A process executable by a programmed processor within a thermostat for tracking and reporting the participation by the thermostat in requested setbacks of the setpoint temperature for the thermostat, said process comprising the steps of:

responding to a request from a requesting entity to enter into a setback mode of operation whereby at least one setpoint used in a normal mode of operation is changed;

tracking the amount of time that elapses during the setback mode of operation; and

responding to a request from the requesting entity for an indication as to the amount of change in setpoint temperature that has occurred over time, said step of responding comprising the steps of;

computing the integral of change in setpoint temperature over time, and

transmitting the computed integral of change in setpoint temperature over time to the requesting entity.

2. The process of claim 1 further comprising the steps of:

monitoring any termination of the requested setback mode of operation; and

computing the integral of the change in setpoint temperature over the time that has elapsed in the setback mode of operation before termination of the setback mode of operation.

3. The process of claim 2 further comprising the steps of:

noting a request from the requesting entity for an indication as to the amount of change in setpoint temperature that has occurred over time; and

transmitting the computed integral of the change in setpoint temperature over the time that elapsed in the setback mode of operation before termination of the setback mode of operation to the requesting entity.

4. The process of claim 1 wherein said change in setpoint temperature is a constant offset in setpoint temperature and wherein said step of computing the integral of change in setpoint temperature over time comprises the steps of:

noting the elapsed period of time in the setback mode of operation; and

multiplying the elapsed period of time by the constant offset in setpoint temperature so as to thereby define a time weighted temperature offset.

5. The process of claim 1 further comprising the steps of:

noting whether a request has been received to clear the computed integral of change in setpoint temperature over time; and

clearing the computed integral of change in setpoint temperature over time in response to receiving the clearing request.

6. A process executable by a programmed processor within a thermostat for tracking and reporting the participation by the thermostat in requested setbacks of the setpoint temperature for the thermostat, said process comprising the steps of:

noting a request for an indication as to the amount of change in setpoint temperature that has occurred over time during any present and past setback modes of operation;

computing the integral of change in setpoint temperature over time in any presently occurring setback mode of operation;

combining the computed integral of change in setpoint temperature with computed integrals of change in setpoint temperature that have occurred over time during past setback modes of operation; and

transmitting the combined computed integrals of change in setpoint temperature to the requesting entity.

7. The process of claim 6 wherein the change in setpoint temperature during the presently occurring setback mode of operation is a constant offset in setpoint temperature and wherein said step of computing the integral of change in setpoint temperature over time during any presently entered setback mode of operation comprises the steps of:

noting the elapsed period of time in the presently entered setback mode of operation; and

multiplying the elapsed period of time by the constant offset in setpoint temperature so as to thereby define a time weighted temperature offset.

8. The process of claim 6 further comprising the steps of:

noting whether a request has been received to clear an indication as to the amount of change in setpoint temperature that has occurred over time during any present and past setback modes of operation; and

clearing the combined computed integrals of change in setpoint temperature in response to receiving the clearing request.

9. A thermostat having the capability to track and report the participation by the thermostat in requested setbacks of the setpoint temperature for the thermostat, said thermostat comprising:

a memory for storing information;

a processor operative to receive at least one communication requesting that the thermostat enter into a setback mode of operation whereby at least one setpoint used in a normal mode of operation is changed, said processor being operative to respond to a request from the requesting entity for an indication as to the amount of change in setpoint temperature that has occurred over time by computing the integral of change in setpoint temperature over time and transmitting the computed integral of change in setpoint temperature over time to the requesting entity.

10. The thermostat of claim 9 wherein said processor is furthermore operative, in response to a request from the requesting entity for an indication as to the amount of change in setpoint temperature that has occurred over time, to combine the computed integral of change in setpoint temperature with computed integrals of change in setpoint temperature that have occurred over time during past setback modes of operation and transmit the combined computed integrals of change in setpoint temperature to the requesting entity.

11. The thermostat of claim 9 wherein said processor is furthermore operative to monitor any termination of a requested setback mode of operation and to note the time that has elapsed in such a terminated setback mode of operation so as to thereafter compute the integral of the change in setpoint temperature over the time that has elapsed in the setback mode of operation before termination of the setback mode of operation.

12. The thermostat of claim 9 wherein the change in setpoint temperature during the entered setback mode of operation is a constant offset in setpoint temperature and wherein said processor is operative to compute the integral of change in setpoint temperature over time during the presently entered setback mode of operation by noting the elapsed period of time in the presently entered setback mode of operation and multiplying the elapsed period of time by the constant offset in setpoint temperature in the setback mode of operation.

13. The thermostat of claim 9 wherein said processor is furthermore operative to respond to a communication requesting that the indication as to the amount of change in setpoint temperature that has occurred over time be cleared whereby the indication as to the amount of change in setpoint temperature that has occurred over time is set to zero.

14. The thermostat of claim 13 wherein said processor is furthermore operative to compute any remaining period of time that elapses in the setback mode of operation occurring when the indication as to the amount of change in setpoint temperature that has occurred over time is set equal to zero and wherein said processor is still furthermore operative to compute the integral of change in setpoint temperature over any time remaining in the entered setback mode of operation so as to define a new indication as to the amount of change in setpoint temperature that has occurred over time following the clearing of the previous indication as to the amount of change in setpoint temperature that has occurred over time to zero.