GB8828195D0 - Control of irrigation water supply - Google Patents

Control of irrigation water supply

Info

Publication number
GB8828195D0
GB8828195D0 GB888828195A GB8828195A GB8828195D0 GB 8828195 D0 GB8828195 D0 GB 8828195D0 GB 888828195 A GB888828195 A GB 888828195A GB 8828195 A GB8828195 A GB 8828195A GB 8828195 D0 GB8828195 D0 GB 8828195D0
Authority
GB
United Kingdom
Prior art keywords
control
water supply
irrigation water
irrigation
supply
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB888828195A
Other versions
GB2225520A (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB8828195A priority Critical patent/GB2225520A/en
Publication of GB8828195D0 publication Critical patent/GB8828195D0/en
Publication of GB2225520A publication Critical patent/GB2225520A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G25/00—Watering gardens, fields, sports grounds or the like
    • A01G25/16—Control of watering
    • A01G25/167—Control by humidity of the soil itself or of devices simulating soil or of the atmosphere; Soil humidity sensors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
    • G01N27/121—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid for determining moisture content, e.g. humidity, of the fluid

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Environmental Sciences (AREA)
  • Hydroponics (AREA)
GB8828195A 1988-12-02 1988-12-02 Control of irrigation water supply Withdrawn GB2225520A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8828195A GB2225520A (en) 1988-12-02 1988-12-02 Control of irrigation water supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8828195A GB2225520A (en) 1988-12-02 1988-12-02 Control of irrigation water supply

Publications (2)

Publication Number Publication Date
GB8828195D0 true GB8828195D0 (en) 1989-01-05
GB2225520A GB2225520A (en) 1990-06-06

Family

ID=10647868

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8828195A Withdrawn GB2225520A (en) 1988-12-02 1988-12-02 Control of irrigation water supply

Country Status (1)

Country Link
GB (1) GB2225520A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105409724A (en) * 2015-12-31 2016-03-23 江苏汇智知识产权服务有限公司 Intelligent drip irrigation system
WO2017124525A1 (en) * 2016-01-24 2017-07-27 罗剑锋 Method for automatically watering flowers according to soil humidity threshold, and sprinkler

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3553481A (en) * 1968-07-24 1971-01-05 Harold W Hasenbeck Automatic soil watering system
CH540004A (en) * 1970-04-28 1973-08-15 Caltagirone Nicolas Device for humidifying an earthy mass
US3777976A (en) * 1973-03-29 1973-12-11 S Milovancevic Electronically controlled watering
US4216789A (en) * 1977-01-17 1980-08-12 Hasenbeck Harold W Conduction type soil matric potential sensor
DE2836415A1 (en) * 1977-08-22 1979-03-08 Solar Product Promotions Pty L WATER FLOW REGULATING DEVICE
US4214701A (en) * 1977-09-02 1980-07-29 Gerhard Beckmann Irrigation valve device
US4197866A (en) * 1977-09-19 1980-04-15 Neal Jerry D Soil moisture sampler and controller
US4693419A (en) * 1981-11-02 1987-09-15 Water Sentry, Inc. Automatic control apparatus and method for sprinkling water over a predetermined area
US4657039A (en) * 1984-08-30 1987-04-14 Ranya L. Alexander Moisture sensor
US4718446A (en) * 1986-04-15 1988-01-12 Simpson Bobby R Time and moisture-responsive sprinkler control system

Also Published As

Publication number Publication date
GB2225520A (en) 1990-06-06

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)