Title:
MATERIAL DETECTING MECHANISM OF SOWING MACHINE, SOWING MACHINE, AND UNMANNED AERIAL VEHICLE FOR PROTECTING PLANTS
Document Type and Number:
WIPO Patent Application WO/2019/084903
Kind Code:
A1
Abstract:
Provided is a material detecting mechanism of a sowing machine for cooperating with a stirring mechanism (100) of a sowing machine (2), the stirring mechanism comprising a rotating shaft (111). The material detecting mechanism comprises a driven member (10) for cooperating with the rotating shaft (111), a magnet (20) for cooperating with the driven member (10), and a Hall element (30) for cooperating with the magnet (20). When the driven member is not stopped by a material, the driven member is driven, by the rotating shaft, to rotate so as to drive the magnet to rotate, and a signal of the magnet detected by the Hall element is a first signal; and when the driven member is stopped by a material, the driven member stops rotating under the resistance of the material, and a signal of the magnet detected by the Hall element is a second signal, with the first signal being different from the second signal, so as to determine whether there is a material in the stirring mechanism. The material detecting mechanism can automatically detect whether there is a material and is very convenient. A sowing machine and an unmanned aerial vehicle for protecting plants are further disclosed.
Inventors:
HUANG XIDI (CN)
ZHANG CHI (CN)
ZHANG CHI (CN)
Application Number:
PCT/CN2017/109272
Publication Date:
May 09, 2019
Filing Date:
November 03, 2017
Export Citation:
Assignee:
SZ DJI TECHNOLOGY CO LTD (CN)
International Classes:
A01C7/08; A01C15/00; B64D1/02; G01F23/00
Foreign References:
| CN106714545A | 2017-05-24 | |||
| US9031424B2 | 2015-05-12 | |||
| US7969319B2 | 2011-06-28 | |||
| KR101668981B1 | 2016-10-25 | |||
| CN205066879U | 2016-03-02 | |||
| CN107084773A | 2017-08-22 |
Attorney, Agent or Firm:
BEIJING BESTIPR INTELLECTUAL PROPERTY LAW CORPORATION (CN)
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