[특허]Electronic depth control system

Electronic depth control system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A01B-063/114
출원번호	US-0556531 (1975-03-10)
발명자 / 주소	Haney Robert M. (Rockford IL)
출원인 / 주소	J. I. Case Company (Racine WI 02)
인용정보	피인용 횟수 : 30 인용 특허 : 0

초록 ▼

An electronic control system for controlling the depth of a vehicle drawn implement as a function of a plurality of sensed variables including a plurality of transducers one for sensing the value of each of the variables, and an electronic control circuit for initially generating a pulsating signal having a characteristic which varies in accordance with and is representative of the value of each variable, for converting that variable to a variable amplitude signal, for algebraically adding the various signals and for producing a control signal to operate an electrically operated valve in response to the polarity and amplitude of the signal to selectively raise and lower the implement to the desired depth.

대표청구항 ▼

An electrical control system for controlling the depth of a vehicle drawn implement of the type having means connecting the implement to the vehicle, hydraulic motor means operable to raise and lower the implement to change the depth thereof, electrically operated valve means for effecting operation of said hydraulic motor means, and means for indicating the values of selected ones of a plurality of variables including a desired depth of the implement, the actual depth of the implement, and the draft load, said control system generating control signals for operating said valve means as a function of the relationship between values of the variables, said control system comprising: transducer means responsive to said indicating means for sensing the value of each of the selected variables; first circuit means responsive to each of said transducer means for generating pulsating signals each having a pulse repetition rate which varies as a function of and is representative of the value of one of the selected variables; second circuit means responsive to each of said representative pulsating signals for generating electrical signals each having an amplitude indicative of the value of one of the selected variables and varying in accordance with the pulse repetition rate of one of said representative pulsating signals; third circuit means for algebraically combining said variable amplitude signals for producing a combined signal having a polarity and amplitude determined by the algebraic sum of said variable amplitude signals; fourth circuit means responsive to said combined signal for generating valve control signals in response to said combined signal exceeding a selected amplitude and for applying said control signal to said valve means to effect operation of said hydraulic motor means to selectively raise or lower said implement as a function of the polarity of said combined signal.

이 특허를 인용한 특허 (30)

Martin,Howard D., Apparatus for planter depth monitoring.
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Robinson ; Jr. Edward L. (Naperville IL) Fardal Randolph G. (Chicago IL) Anderson David (Country Club Hills IL), Automatic alternating marker system.
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Suganami Takashi (Fujisawa JPX) Manzeki Teruo (Fujisawa JPX) Takeda Tashiro (Hiratsuka JPX) Nakayama Tetsuya (Fujisawa JPX) Shimizu Koh (Hiratsuka JPX) Kurihara Keishiro (Fujisawa JPX) Fukumura Tohru, Automatic control systems for the working tool of a civil machine.
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Rock Merlin A. (Bettendorf IA), Automatic header height control.
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Katayama Yoshiyuki (Osaka JPX) Hasegawa Shigekazu (Sakai JPX) Okuyama Shigeaki (Kawachinagano JPX) Nakamura Norimi (Sakai JPX), Automatic position control apparatus for ground working vehicle.
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Gramm Richard, Combine header height control.
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Arnold Winfried (Vaihingen/Enz DEX), Control system for a pulled load, particularly agricultural tractor-and-plough control system.
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Sakundiak James M. (Sedley CAX), Control system for controlling the displacement of a working portion of an implement.
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Dennis Duello, Dynamic controller of excess downpressure for surface engaging implement.
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Noonan James Thomas ; Payne David Alan ; Parker Paul David, Electrohydraulic control of implement lift cylinders.
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Schlipf, Robert, Header height control system and method.
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Gramm, Richard, Height sensor arrangement for agricultural applications.
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Haugen Larry R., Hitch assembly for a work vehicle.
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Bergene Mark A. (Cedar Falls IA) Boe Thomas E. (Cedar Falls IA), Hitch control system.
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Bellanger Regis (Beauvias FRX) Graaskamp William J. (Guelph CAX), Implement control system.
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Stoller, Jason; Levy, Kent; Swanson, Todd, Integrated implement downforce control systems, methods, and apparatus.
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Schneider, Walter, Method and system for regulating the operating depth of towed agricultural machinery, for example tractor-borne plows.
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Middleton Christopher O. (1925 46th Ave. ; #141 Capitola CA 95010) Robson Colin L. (6124 Corte De La Reina San Jose CA 95120), Method for automatic depth control for earth moving and grading.
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Middleton Christopher O. (Capitola CA) Robson Colin L. (San Jose CA), Method for automatic depth control for earth moving and grading.
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Martin,Howard D., Method for planter depth monitoring.
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Matthews John D. (Simi Valley CA) Williams Donald E. (Oxnard CA), Mine clearing apparatus.
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Strunk Richard D. (East Moline IL) Kasten Robert E. (Moline IL) Monopoli ; deceased Richard V. (late of Hadley MA by Eileen F. Monopoli ; executrix), Model reference adaptive implement control.
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van der Lely Cornelis (7 Brschenrain Zug CHX), Motor vehicle with driving speed responsive to change in attachment load.
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Jennings Marvin D. (Hendersonville NC), Position and draft control system for plows.
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Gervais, Joel; Henry, James W, Seed implement incorporating a down pressure sensing and adjustment system.
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Sauder, Derek A.; Sauder, Tim A.; Koch, Justin L.; Baurer, Phil D., System and method for determining proper downforce for a planter row unit.
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Dwyer Robert M. (Livonia MI) Skiba Edwin J. (Sterling Heights MI), Tractor draft sensing apparatus.
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Mortonson Robert M. (Park Ridge IL) Holloway Gale A. (Joliet IL), Tractor hitch control system having safety features.
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Wiegardt Gordon K. (Cedar Falls IA) Hanks Thomas W. (Cedar Falls IA) Kittle Carl E. (Cedar Falls IA), Vehicle with control system for raising and lowering implement.
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Wiegardt Gordon K. (Cedar Falls IA) Hanks Thomas W. (Cedar Falls IA) Murphy Kenneth E. (Reinbeck IA), Vehicle with control system having operator-actuable switch for storing parameter signal value to control vehicle-connec.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Electronic depth control system 원문보기

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