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Programmable electronic real-time load controller

  • US 4,293,915 A
  • Filed: 04/16/1979
  • Issued: 10/06/1981
  • Est. Priority Date: 04/16/1979
  • Status: Expired due to Term
First Claim
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1. An electronic controller for controlling the energization states of each of a plurality of electrical loads in real-time, said controller comprising:

  • a plurality of load control circuits, each said load control circuit being adapted to be interconnected with a load, and having a load-on state when its load is to be on, and a load-off state when its load is to be off;

    clock means for accumulating real-time information; and

    ,a data processor, including;

    an event memory for storing a plurality of load groups of information, each said load group being uniquely associated with one of the plurality of electrical loads and comprising one or more control events and an event time corresponding to each said control event, said control events in each said load group representing;

    an on control function in which the associated load is to be on for the entirety of each predetermined control interval successive to the corresponding event time;

    an off control function in which the associated load is to be off for the entirety of each predetermined control interval successive to the corresponding event time; and

    , a duty-cycle control function in which the associated load is to be on for a predetermined portion of each predetermined control interval successive to the corresponding event time;

    a program memory storing a set of program instructions; and

    ,a processing means operative in response to said set of program instructions stored in said program memory, said processing means including;

    means operative to enter said control events and corresponding event times for each load into the associated load group in said event memory;

    means for obtaining said real-time information from said clock means;

    means for addressing and searching the associated load group for each load in said event memory to effect comparison of said event times therein with said real-time information obtained from said clock means; and

    , means for placing said load control circuit for each load in said load-on state or said load-off state in accordance with that one of said control events in said associated load group whose corresponding event time is at or immediately procedes the time represented by said real-time information obtained from said clock means.

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