Title:
CAPACITIVE SENSING FILM, RELATED INTELLIGENT PAPER DIAPER, AND DETECTION SYSTEM DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/169606
Kind Code:
A1
Abstract:
A capacitive sensing film (20), an intelligent paper diaper based on the sensing film (20), and a wetness detection system apparatus. The sensing film (20) comprises metal thin film electrodes (21, 22), a flexible substrate (25), and a waterproof protection layer (26); the metal thin film electrodes (21, 22) are deposited on the flexible substrate (25), and the waterproof protection layer (26) covers the metal thin film electrodes (21, 22) and together with the flexible substrate (25) forms a waterproof interlayer, which is used for protecting the metal thin film electrodes (21, 22); the metal thin film electrodes (21, 22) have a smooth surface and a nanoscale thickness, and are used for reducing the surface area in contact with a liquid (16) by means of an interlayer gap of the metal thin film electrodes (21, 22) at a damaged area or an edge of the sensing film (20), and thereby inhibiting the generation of electric double layer capacitance at a liquid-solid interface; when the sensing film (20) is soaked in a liquid (16) containing electrolytes, the electric double layer capacitance generated between the metal thin film electrodes (21, 22) and the liquid (16) is less than electrolytic capacitance generated between the metal thin film electrodes (21, 22) and the liquid (16), and consequently electrical double layer capacitance interference is weakened, and a wetness detection function based on electrolytic capacitance is realized.
Inventors:
WONG SUN HOI (CN)
XU FEI (CN)
CHEN ZHEN (CN)
XU FEI (CN)
CHEN ZHEN (CN)
Application Number:
PCT/CN2023/093022
Publication Date:
September 14, 2023
Filing Date:
May 09, 2023
Export Citation:
Assignee:
WONG SUN HOI (CN)
International Classes:
G01N27/22; A61F13/42; A61F13/496
Foreign References:
| CN114324502A | 2022-04-12 | |||
| CN111077192A | 2020-04-28 | |||
| CN112315667A | 2021-02-05 | |||
| CN113967130A | 2022-01-25 | |||
| US20130324955A1 | 2013-12-05 |
Attorney, Agent or Firm:
BEIJING ZHONGPU HONGRU INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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