GB2249182B - Irrigation sensor device - Google Patents

Irrigation sensor device

Info

Publication number
GB2249182B
GB2249182B GB9118990A GB9118990A GB2249182B GB 2249182 B GB2249182 B GB 2249182B GB 9118990 A GB9118990 A GB 9118990A GB 9118990 A GB9118990 A GB 9118990A GB 2249182 B GB2249182 B GB 2249182B
Authority
GB
United Kingdom
Prior art keywords
sensor device
irrigation sensor
irrigation
sensor
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.)
Expired - Fee Related
Application number
GB9118990A
Other versions
GB9118990D0 (en
GB2249182A (en
Inventor
Daniel Rabindrana Hettiaratchi
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.)
BTG International Ltd
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
British Technology Group Ltd
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 National Research Development Corp UK, British Technology Group Ltd filed Critical National Research Development Corp UK
Publication of GB9118990D0 publication Critical patent/GB9118990D0/en
Publication of GB2249182A publication Critical patent/GB2249182A/en
Application granted granted Critical
Publication of GB2249182B publication Critical patent/GB2249182B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/24—Earth materials
    • G01N33/246—Earth materials for water content
GB9118990A 1990-09-05 1991-09-04 Irrigation sensor device Expired - Fee Related GB2249182B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB909019377A GB9019377D0 (en) 1990-09-05 1990-09-05 Irrigation sensor device

Publications (3)

Publication Number Publication Date
GB9118990D0 GB9118990D0 (en) 1991-10-23
GB2249182A GB2249182A (en) 1992-04-29
GB2249182B true GB2249182B (en) 1994-02-09

Family

ID=10681704

Family Applications (2)

Application Number Title Priority Date Filing Date
GB909019377A Pending GB9019377D0 (en) 1990-09-05 1990-09-05 Irrigation sensor device
GB9118990A Expired - Fee Related GB2249182B (en) 1990-09-05 1991-09-04 Irrigation sensor device

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB909019377A Pending GB9019377D0 (en) 1990-09-05 1990-09-05 Irrigation sensor device

Country Status (3)

Country Link
EP (1) EP0547122A1 (en)
GB (2) GB9019377D0 (en)
WO (1) WO1992003916A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU4163997A (en) * 1996-07-26 1998-02-20 Soil Sensors, Inc. Soil moisture sensor
DE69824406T2 (en) * 1997-02-28 2005-06-16 Commonwealth Scientific And Industrial Research Organisation MOISTURE PROOF
AU728070B2 (en) * 1997-02-28 2001-01-04 Commonwealth Scientific And Industrial Research Organisation Moisture detection
US7311011B2 (en) 2002-10-31 2007-12-25 Battelle Energy Alliance, Llc Apparatuses for interaction with a subterranean formation, and methods of use thereof
US6976386B1 (en) * 2002-10-31 2005-12-20 Battelle Energy Alliance, Llc Tensiometer methods
CN101292621B (en) * 2007-04-29 2011-12-07 杨庆理 Long water device, long water device irrlgation system and application of the same in alkaline land improvement
CN104285760A (en) * 2014-09-30 2015-01-21 张家港市沙洲绿农业科技发展有限公司 Agricultural water injector

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3117442A (en) * 1960-05-20 1964-01-14 Jerry R Brooks Moisture indicating device
GB1158573A (en) * 1966-02-16 1969-07-16 Lambert S Lancaster Ltd Improvements in or relating to Moisture Determining Devices
GB1556577A (en) * 1976-11-24 1979-11-28 Slepak B Moisture indicator
US4184445A (en) * 1978-01-16 1980-01-22 Compac Industries, Inc. Soil moisture signaling device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2946512A (en) * 1954-05-17 1960-07-26 Lorenzo A Richards Means for automatic irrigation control
CH535004A (en) * 1971-03-09 1973-03-31 Martin Elisabeth Automatic sprinkler system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3117442A (en) * 1960-05-20 1964-01-14 Jerry R Brooks Moisture indicating device
GB1158573A (en) * 1966-02-16 1969-07-16 Lambert S Lancaster Ltd Improvements in or relating to Moisture Determining Devices
GB1556577A (en) * 1976-11-24 1979-11-28 Slepak B Moisture indicator
US4184445A (en) * 1978-01-16 1980-01-22 Compac Industries, Inc. Soil moisture signaling device

Also Published As

Publication number Publication date
GB9118990D0 (en) 1991-10-23
WO1992003916A1 (en) 1992-03-19
GB9019377D0 (en) 1990-10-17
GB2249182A (en) 1992-04-29
EP0547122A1 (en) 1993-06-23

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19950904