Title:
LIQUID LEVEL MEASUREMENT DEVICE, PESTICIDE TANK DEVICE AND LIQUID FILLING DEVICE OF UNMANNED AERIAL VEHICLE, AND UNMANNED AERIAL VEHICLE
Document Type and Number:
WIPO Patent Application WO/2020/051876
Kind Code:
A1
Abstract:
Disclosed are a liquid level measurement device (20), a pesticide tank device and a liquid filling device for an unmanned aerial vehicle, and an unmanned aerial vehicle (60, 60'). The liquid level measurement device (20) is provided with a buoy assembly (21) inside a water tank (10) and is provided with a non-contact measurement assembly (22) outside the water tank (10). The buoy assembly (21) comprises a buoy member (211) capable of moving as the liquid level changes. The non-contact measurement assembly (22) is arranged spaced apart from the buoy assembly (21). The position of the buoy member (211) can be sensed so as to determine the liquid level in the water tank (10). The present invention can realize accurate measurement of the liquid level in the water tank (10), simplify the structure of the liquid level measurement device (20) and facilitate rapid removal of the water tank (10).
Inventors:
ZHOU WANREN (CN)
ZHOU LE (CN)
ZHOU LE (CN)
Application Number:
PCT/CN2018/105724
Publication Date:
March 19, 2020
Filing Date:
September 14, 2018
Export Citation:
Assignee:
SZ DJI TECHNOLOGY CO LTD (CN)
International Classes:
G01F23/72; B64C27/08; B64D1/18; G01F23/76
Foreign References:
| CN107421606A | 2017-12-01 | |||
| CN107421606A | 2017-12-01 | |||
| CN207191411U | 2018-04-06 | |||
| CN102121844A | 2011-07-13 | |||
| CN2371544Y | 2000-03-29 | |||
| US5874899A | 1999-02-23 | |||
| US4447743A | 1984-05-08 |
Attorney, Agent or Firm:
LEADER PATENT & TRADEMARK FIRM (CN)
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