JPS6474912A - Apparatus for controlling plowing depth of tractor - Google Patents
Apparatus for controlling plowing depth of tractorInfo
- Publication number
- JPS6474912A JPS6474912A JP23064887A JP23064887A JPS6474912A JP S6474912 A JPS6474912 A JP S6474912A JP 23064887 A JP23064887 A JP 23064887A JP 23064887 A JP23064887 A JP 23064887A JP S6474912 A JPS6474912 A JP S6474912A
- Authority
- JP
- Japan
- Prior art keywords
- soil
- hardness
- tractor
- height
- ultrasonic wave
- 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.)
- Pending
Links
- 239000002689 soil Substances 0.000 abstract 5
- 238000001514 detection method Methods 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 abstract 1
Abstract
PURPOSE:To automatically set a threshold level corresponding to the hardness of soil and to enable accurate and stable control of plowing depth, by preliminarily emitting an ultrasonic wave against soil prior to the detection of the height with an ultrasonic sensor, thereby detecting the hardness of the soil. CONSTITUTION:An ultrasonic sensor 12 having a transmission microphone 12a and a reception microphone 12b is connected to a counter and the period from the emissions of ultrasonic wave to the reception is counted to detect the height of the tractor. Ultrasonic wave is preliminarily emitted to detect the hardness of the soil prior to the detection of the height and the threshold level is automatically adjusted according to the soil hardness.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23064887A JPS6474912A (en) | 1987-09-14 | 1987-09-14 | Apparatus for controlling plowing depth of tractor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23064887A JPS6474912A (en) | 1987-09-14 | 1987-09-14 | Apparatus for controlling plowing depth of tractor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6474912A true JPS6474912A (en) | 1989-03-20 |
Family
ID=16911086
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23064887A Pending JPS6474912A (en) | 1987-09-14 | 1987-09-14 | Apparatus for controlling plowing depth of tractor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6474912A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5543788A (en) * | 1991-07-12 | 1996-08-06 | Fujitsu Limited | Map management system in geographic information management system |
US7464749B2 (en) | 2003-11-06 | 2008-12-16 | Denso Corporation | Air-conditioning unit |
WO2015164802A1 (en) * | 2014-04-25 | 2015-10-29 | Cnh Industrial America Llc | System for mounting an agricultural soil analyzer to agricultural implement |
JP2020054317A (en) * | 2018-10-04 | 2020-04-09 | 株式会社クボタ | Work vehicle |
CN114916259A (en) * | 2022-05-27 | 2022-08-19 | 黑龙江省农业科学院土壤肥料与环境资源研究所 | Subsoiling device capable of continuously measuring mechanical resistance of soil |
-
1987
- 1987-09-14 JP JP23064887A patent/JPS6474912A/en active Pending
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5543788A (en) * | 1991-07-12 | 1996-08-06 | Fujitsu Limited | Map management system in geographic information management system |
US7464749B2 (en) | 2003-11-06 | 2008-12-16 | Denso Corporation | Air-conditioning unit |
WO2015164802A1 (en) * | 2014-04-25 | 2015-10-29 | Cnh Industrial America Llc | System for mounting an agricultural soil analyzer to agricultural implement |
US9516802B2 (en) | 2014-04-25 | 2016-12-13 | Cnh Industrial America Llc | System and method for controlling an agricultural system based on soil analysis |
US10028424B2 (en) | 2014-04-25 | 2018-07-24 | Cnh Industrial America Llc | System for mounting an agricultural soil analyzer to agricultural implement |
US10765056B2 (en) | 2014-04-25 | 2020-09-08 | Cnh Industrial America Llc | System and method for controlling an agricultural system based on soil analysis |
JP2020054317A (en) * | 2018-10-04 | 2020-04-09 | 株式会社クボタ | Work vehicle |
CN114916259A (en) * | 2022-05-27 | 2022-08-19 | 黑龙江省农业科学院土壤肥料与环境资源研究所 | Subsoiling device capable of continuously measuring mechanical resistance of soil |
CN114916259B (en) * | 2022-05-27 | 2023-01-31 | 黑龙江省黑土保护利用研究院 | Subsoiling device capable of continuously measuring mechanical resistance of soil |
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