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AU563491B2 - Depth control system - Google Patents

Depth control system

Info

Publication number
AU563491B2
AU563491B2 AU30289/84A AU3028984A AU563491B2 AU 563491 B2 AU563491 B2 AU 563491B2 AU 30289/84 A AU30289/84 A AU 30289/84A AU 3028984 A AU3028984 A AU 3028984A AU 563491 B2 AU563491 B2 AU 563491B2
Authority
AU
Australia
Prior art keywords
control system
depth control
depth
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.)
Ceased
Application number
AU30289/84A
Other versions
AU3028984A (en
Inventor
Michael WORTHINGTON
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.)
Da Ultrasonics Ltd
Original Assignee
DA ULTRASONICS 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 DA ULTRASONICS Ltd filed Critical DA ULTRASONICS Ltd
Priority to AU30289/84A priority Critical patent/AU563491B2/en
Publication of AU3028984A publication Critical patent/AU3028984A/en
Priority to AU39108/85A priority patent/AU3910885A/en
Priority to AU40447/85A priority patent/AU546993B2/en
Application granted granted Critical
Publication of AU563491B2 publication Critical patent/AU563491B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B63/00—Lifting or adjusting devices or arrangements for agricultural machines or implements
    • A01B63/02—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors
    • A01B63/10—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means
    • A01B63/111—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements
    • A01B63/1112—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements using a non-tactile ground distance measurement, e.g. using reflection of waves
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00—Control of position or direction
    • G05D3/12—Control of position or direction using feedback
    • G05D3/20—Control of position or direction using feedback using a digital comparing device

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
AU30289/84A 1983-07-06 1983-10-07 Depth control system Ceased AU563491B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU30289/84A AU563491B2 (en) 1983-07-06 1983-10-07 Depth control system
AU39108/85A AU3910885A (en) 1983-10-07 1985-02-22 A depth control system
AU40447/85A AU546993B2 (en) 1983-10-07 1985-03-27 A height control system

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AUPG0141 1983-07-06
AUPG1737 1983-10-07
AU30289/84A AU563491B2 (en) 1983-07-06 1983-10-07 Depth control system

Related Child Applications (2)

Application Number Title Priority Date Filing Date
AU39108/85A Division AU3910885A (en) 1983-10-07 1985-02-22 A depth control system
AU40447/85A Division AU546993B2 (en) 1983-10-07 1985-03-27 A height control system

Publications (2)

Publication Number Publication Date
AU3028984A AU3028984A (en) 1985-01-31
AU563491B2 true AU563491B2 (en) 1987-07-09

Family

ID=3718258

Family Applications (2)

Application Number Title Priority Date Filing Date
AU30289/84A Ceased AU563491B2 (en) 1983-07-06 1983-10-07 Depth control system
AU39108/85A Pending AU3910885A (en) 1983-10-07 1985-02-22 A depth control system

Family Applications After (1)

Application Number Title Priority Date Filing Date
AU39108/85A Pending AU3910885A (en) 1983-10-07 1985-02-22 A depth control system

Country Status (1)

Country Link
AU (2) AU563491B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU614486B2 (en) * 1983-11-21 1991-09-05 Ezra C. Lundahl, Inc. Automatic sonar activated height control for a header
ITUA20161821A1 (en) * 2016-03-18 2017-09-18 Cnh Ind Italia Spa ULTRASONIC SENSORS TO MEASURE THE IRREGULARITY OF THE SOIL

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0196292A1 (en) * 1984-09-18 1986-10-08 Agtronics Pty. Ltd. Means for determining distance between two points
FR2666911B1 (en) * 1990-09-19 1992-12-18 Huard Sa ELECTRONIC DEVICE FOR CONTROLLING THE DEPTH AND LIFTING OF A SEMI-REACHED PLOW.
FR2681500B1 (en) * 1991-09-24 1998-09-11 Sagem METHOD AND DEVICE FOR THE VERTICAL REGULATION, RELATIVE TO THE SURFACE OF THE GROUND, OF A TOOL MOUNTED AT THE BACK OF A VEHICLE AND AGRICULTURAL TRACTOR EQUIPPED WITH IT.

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU614486B2 (en) * 1983-11-21 1991-09-05 Ezra C. Lundahl, Inc. Automatic sonar activated height control for a header
ITUA20161821A1 (en) * 2016-03-18 2017-09-18 Cnh Ind Italia Spa ULTRASONIC SENSORS TO MEASURE THE IRREGULARITY OF THE SOIL
WO2017158006A3 (en) * 2016-03-18 2018-06-28 Cnh Industrial Italia S.P.A. Method and system for measuring the roughness of a ground surface
CN109068575A (en) * 2016-03-18 2018-12-21 凯斯纽荷兰(中国)管理有限公司 For measuring the method and system of the roughness of floor surface
CN109068575B (en) * 2016-03-18 2021-12-07 凯斯纽荷兰(中国)管理有限公司 Method and system for measuring roughness of a ground surface
US11197408B2 (en) 2016-03-18 2021-12-14 Cnh Industrial America Llc Ultrasonic sensors for field roughness measurement

Also Published As

Publication number Publication date
AU3028984A (en) 1985-01-31
AU3910885A (en) 1985-03-21

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