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Electronic temperature control system

  • US 4,276,925 A
  • Filed: 09/19/1979
  • Issued: 07/07/1981
  • Est. Priority Date: 09/19/1979
  • Status: Expired due to Term
First Claim
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1. A temperature control system for controlling the ambient temperature at a plurality of locations, respectively, each of which locations is provided with a thermostat, comprising:

  • (a) data entry means;

    (b) means for polling each of said thermostats to determine the temperature at each said location at a preselected point in real time and to thereby produce polled temperature data;

    (c) first memory storage means for storing digital data corresponding to the desired temperature limits for said locations;

    (d) second memory storage means for storing said polled temperature data;

    (e) first comparator means for comparing said polled temperature data which said desired temperature limits data and operative to selectively produce over-limit, under-limit and equal limit occurs corresponding to the difference between said polled temperature data and said desired temperature limits data;

    (f) third memory storage means for storing said overlimit, underlimit and equal limit counts;

    (g) central calculator means operative to alternately, selectively produce temperature changing, and no operation command signals in accordance with said overlimit, underlimit and equal limit counts, and(h) means for applying said temperature changing signals to a temperature changing source.

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