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Programmable thermostat including a feature for providing a running total for the cost of energy consumed during a given period for heating and/or cooling a conditioned space

  • US 6,786,421 B2
  • Filed: 09/03/2003
  • Issued: 09/07/2004
  • Est. Priority Date: 01/30/2002
  • Status: Expired due to Term
First Claim
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1. A programmable thermostat system for controlling space conditioning equipment comprising:

  • A) at least one environmental condition sensor providing an electrical signal indicative of the ambient temperature of a conditioned space in which said environmental condition sensor is situated;

    B) a transparent touch pad juxtaposed with a liquid crystal display to constitute a touch screen for interactive interface with a user;

    C) a processor, said processor including;

    1) a central processing unit;

    2) a real time clock;

    3) a memory coupled to said central processing unit for storing program and data information; and

    4) an input/output unit coupled between said processor and said touch screen for carrying out information transfer therebetween, said input/output unit further including;

    a) a sensor input coupled to each said environmental condition sensors for receiving said electrical signal therefrom; and

    b) a control output coupled to the space conditioning equipment for issuing control signals thereto; and

    D) a control program stored in said memory for causing said central processing unit to communicate through said input/output unit to selectively;

    1) establish on said touch screen;

    a) a representation of a first virtual button; and

    b) a first legend indicative of said first virtual button, if touched, invoking a first setup function of said thermostat, which first setup function is for entering;

    i) power consumption ratings for each space conditioning equipment component; and

    ii) the cost rate for each type of energy used by the space conditioning equipment;

    2) read the touch screen to determine if the representation of said first virtual button has been touched;

    3) if the first virtual button has been touched, displaying a menu of cost determination information entry virtual buttons on said touch screen, each cost determination information entry virtual button representing a type of cost information;

    4) read the positions on the touch screen of said cost determination information entry virtual buttons; and

    5) for each cost determination information entry virtual button touched, store in said memory an incremental cost information amount of the type represented thereby.

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