JPS644601B2 - - Google Patents
Info
- Publication number
- JPS644601B2 JPS644601B2 JP3566982A JP3566982A JPS644601B2 JP S644601 B2 JPS644601 B2 JP S644601B2 JP 3566982 A JP3566982 A JP 3566982A JP 3566982 A JP3566982 A JP 3566982A JP S644601 B2 JPS644601 B2 JP S644601B2
- Authority
- JP
- Japan
- Prior art keywords
- transmitter
- ground
- ultrasonic
- receiver
- reflected
- 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
Links
- 238000001514 detection method Methods 0.000 claims description 30
- 238000002604 ultrasonography Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000007257 malfunction Effects 0.000 description 5
- 238000009333 weeding Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
Landscapes
- Agricultural Machines (AREA)
- Lifting Devices For Agricultural Implements (AREA)
- Harvester Elements (AREA)
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3566982A JPS58152410A (ja) | 1982-03-04 | 1982-03-04 | 作業部の対地レベル検出装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3566982A JPS58152410A (ja) | 1982-03-04 | 1982-03-04 | 作業部の対地レベル検出装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS58152410A JPS58152410A (ja) | 1983-09-10 |
JPS644601B2 true JPS644601B2 (fr) | 1989-01-26 |
Family
ID=12448274
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3566982A Granted JPS58152410A (ja) | 1982-03-04 | 1982-03-04 | 作業部の対地レベル検出装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58152410A (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6412284A (en) * | 1987-07-06 | 1989-01-17 | Kurita Water Ind Ltd | Ultrasonic range finder |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5216325A (en) * | 1975-07-30 | 1977-02-07 | Yanmar Agricult Equip | Cutterrbar adjusting device for combine |
JPS5828554B2 (ja) * | 1978-11-22 | 1983-06-16 | 松下電器産業株式会社 | 超音波距離計 |
JPS56153267A (en) * | 1980-04-30 | 1981-11-27 | Diesel Kiki Co Ltd | Distance measuring device using ultrasonic wave |
-
1982
- 1982-03-04 JP JP3566982A patent/JPS58152410A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS58152410A (ja) | 1983-09-10 |
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