Title:
DRONE FOR MEASURING WATER DEPTH OF FIELD
Document Type and Number:
WIPO Patent Application WO/2018/168564
Kind Code:
A1
Abstract:
[Problem] To provide a simple method and a simple device capable of accurately measuring the water depth of a field, in particular, the entirety of a rice field. [Solution] By flying, in the air above a field, a drone (unmanned flying body) provided with an ultrasonic wave transmission/reception device, and an infrared transmission/reception device or a microwave transmission/reception device, the water depth at a point immediately below the drone is measured on the basis of a difference in distance measured by water surface reflection of ultrasonic waves and ground reflection of microwaves or infrared. By flying the drone all over the air above a field, the water depth of the entirety of the field can be accurately measured. Measurement is preferably performed only when the drone is in flight at no less than a predetermined speed.
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Inventors:
YANAGISHITA HIROSHI (JP)
Application Number:
PCT/JP2018/008490
Publication Date:
September 20, 2018
Filing Date:
March 06, 2018
Export Citation:
Assignee:
NILEWORKS INC (JP)
International Classes:
B64C39/02; G01C13/00; B64D47/00
Domestic Patent References:
| WO2016082219A1 | 2016-06-02 | |||
| WO2017000304A1 | 2017-01-05 |
Foreign References:
| JPH07181255A | 1995-07-21 | |||
| JP2016015628A | 2016-01-28 | |||
| JP2000105281A | 2000-04-11 | |||
| JPS629284A | 1987-01-17 | |||
| JPH102779A | 1998-01-06 | |||
| JPH05293036A | 1993-11-09 | |||
| JP2001116550A | 2001-04-27 | |||
| JPH06201435A | 1994-07-19 | |||
| JP2008089583A | 2008-04-17 | |||
| US20110271752A1 | 2011-11-10 |
Attorney, Agent or Firm:
KURIHARA Kiyoshi (JP)
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