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Infra-red comfort sensor

  • US 5,400,964 A
  • Filed: 11/29/1993
  • Issued: 03/28/1995
  • Est. Priority Date: 11/29/1993
  • Status: Expired due to Fees
First Claim
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1. An automotive climate control system for establishing and maintaining a passenger compartment thermal level according to a preset level comprising in combination:

  • infra-red sensing means for viewing a predetermined portion of the passenger compartment for radiant heat therein, said infra-red sensing means comprising an infra-red sensor characterized by an output proportional to the thermal level of said viewed portion and amplification means characterized by low input offset voltage for amplifying said output signal to produce said control signal;

    a control signal produced by said infra-red sensing means substantially representative of passenger compartment thermal level; and

    control means responsive to said control signal for controlling an HVAC system to establish and maintain the passenger compartment thermal level according to the preset level.

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