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Solar controlled irrigation system

  • US 4,396,150 A
  • Filed: 11/04/1981
  • Issued: 08/02/1983
  • Est. Priority Date: 11/04/1981
  • Status: Expired due to Fees
First Claim
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1. A solar controlled irrigation system comprising:

  • an inlet for supply of irrigation water;

    a reservoir, said inlet being connected to said reservoir to supply water to said reservoir;

    an outlet for the delivery of irrigation water, said outlet being an outlet line connected to said reservoir to receive water from said reservoir;

    a flow control valve connected between said reservoir and said outlet to control outflow from said reservoir into said outlet line;

    solar sensing means connected to said flow control valve for controlling the flow of irrigation water through said flow control valve substantially as a function of solar radiation onto said solar sensing means, said sensing means comprising an enclosure formed of a material which substantially passes solar radiation and is substantially opaque to infrared radiation and a temperature sensor within said enclosure so that the temperature sensed by said temperature sensor is substantially a function of solar radiation, said temperature sensor providing mechanical motion upon the sensing of solar radiation, said temperature sensor being connected to said flow control valve so that the mechanical motion of said temperature sensor physically moves said valve to control outflow of water from said reservoir into said outlet to control the delivery of irrigation water.

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