Title:
MEASUREMENT APPARATUS, MEASUREMENT SYSTEM, AND METHOD
Document Type and Number:
WIPO Patent Application WO/2024/047754
Kind Code:
A1
Abstract:
[Problem] To improve accuracy in measuring water levels. [Solution] A measurement apparatus 1 according to one embodiment of the present disclosure comprises: a cable 2 which is equipped with an oscillation circuit 9 and a plurality of conductor wires 21-27 that are connected to the oscillation circuit 9; and a control device 100 which outputs measurement information relating to electrostatic capacitance between the conductor wires on the basis of frequency information relating to the oscillation circuit 9. The conductor wires 21-27 have: a first mode that is composed of at least a first conductor wire group and a second conductor wire group; and a second mode that is composed of a third conductor wire group and a fourth conductor wire group. The first conductor wire group and the second conductor wire group are provided so as not to be in a relation of enclosing one by the other. The phase of signals differs between the first conductor wire group and the second conductor wire group. The third conductor wire group is provided so as to be enclosed by the fourth conductor wire group. The phase of signals differs between the third conductor wire group and the fourth conductor wire group. The control device 100 is provided so as to be capable of switching between the first mode and the second mode.
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Inventors:
HIGUCHI TETSUYA (JP)
KOYAMA YUKI (JP)
KASAI YUJI (JP)
KOYAMA YUKI (JP)
KASAI YUJI (JP)
Application Number:
PCT/JP2022/032602
Publication Date:
March 07, 2024
Filing Date:
August 30, 2022
Export Citation:
Assignee:
JAPAN INFRASTRUCTURE MEASUREMENT INC (JP)
International Classes:
G01F23/263
Foreign References:
| JPH1151745A | 1999-02-26 | |||
| JPS5685395A | 1981-07-11 | |||
| US20140290343A1 | 2014-10-02 | |||
| US20090301190A1 | 2009-12-10 | |||
| JPS5685395A | 1981-07-11 |
Attorney, Agent or Firm:
ONE IP PATENT FIRM (JP)
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