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FR2653911B1 - Dispositif hygrostatique de commande. - Google Patents

Dispositif hygrostatique de commande.

Info

Publication number
FR2653911B1
FR2653911B1 FR8914622A FR8914622A FR2653911B1 FR 2653911 B1 FR2653911 B1 FR 2653911B1 FR 8914622 A FR8914622 A FR 8914622A FR 8914622 A FR8914622 A FR 8914622A FR 2653911 B1 FR2653911 B1 FR 2653911B1
Authority
FR
France
Prior art keywords
control device
hygrostatic
hygrostatic control
control
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 - Lifetime
Application number
FR8914622A
Other languages
English (en)
Other versions
FR2653911A1 (fr
Inventor
Gervais Christian
Chevallier Jacques
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 FR8914622A priority Critical patent/FR2653911B1/fr
Priority to PCT/FR1990/000786 priority patent/WO1991006902A1/fr
Publication of FR2653911A1 publication Critical patent/FR2653911A1/fr
Application granted granted Critical
Publication of FR2653911B1 publication Critical patent/FR2653911B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D22/00—Control of humidity

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Soil Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Environmental Sciences (AREA)
  • Nozzles (AREA)
  • Catching Or Destruction (AREA)
FR8914622A 1989-10-31 1989-10-31 Dispositif hygrostatique de commande. Expired - Lifetime FR2653911B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR8914622A FR2653911B1 (fr) 1989-10-31 1989-10-31 Dispositif hygrostatique de commande.
PCT/FR1990/000786 WO1991006902A1 (fr) 1989-10-31 1990-10-31 Dispositif hygrostatique de commande

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8914622A FR2653911B1 (fr) 1989-10-31 1989-10-31 Dispositif hygrostatique de commande.

Publications (2)

Publication Number Publication Date
FR2653911A1 FR2653911A1 (fr) 1991-05-03
FR2653911B1 true FR2653911B1 (fr) 1992-05-07

Family

ID=9387184

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8914622A Expired - Lifetime FR2653911B1 (fr) 1989-10-31 1989-10-31 Dispositif hygrostatique de commande.

Country Status (2)

Country Link
FR (1) FR2653911B1 (fr)
WO (1) WO1991006902A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0910238A4 (fr) * 1996-07-09 2000-05-31 Clive Lindsay Ragless Systeme reagissant a l'humidite du sol
CN103026949B (zh) * 2013-01-17 2014-03-26 中国农业大学 一种调压性能稳定的毛管压力调节器
CN103026948B (zh) * 2013-01-17 2014-03-26 中国农业大学 一种毛管压力调节器

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2318659A1 (de) * 1973-04-13 1974-10-31 Feddern Paul Verfahren und einrichtung zur regelung des befeuchtungsgrades von koernigem material, insbesondere von formsanden
DE2513600A1 (de) * 1975-03-27 1976-10-07 Rainer Ing Grad Schwemmle Feuchtigkeitsgeregeltes ventil
CH607128A5 (fr) * 1976-03-25 1978-11-30 Elektrowatt Ag
FR2380588A1 (fr) * 1977-02-09 1978-09-08 Levadoux Gilbert Vanne hygrostatique pour horticulture notamment
DE3607101A1 (de) * 1986-03-05 1987-09-10 Harald Dipl Ing Vetter Ventil zur feuchteabhaengigen regelung eines massenstroms

Also Published As

Publication number Publication date
WO1991006902A1 (fr) 1991-05-16
FR2653911A1 (fr) 1991-05-03

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Legal Events

Date Code Title Description
ST Notification of lapse