US 12,440,394 B2
Double-sided directional weighted and quantified wet state sensor and related products and methods
Sun Hoi Wong, Hong Kong (CN); Zhen Chen, Hong Kong (CN); and Fei Xu, Hong Kong (CN)
Appl. No. 17/770,278
Filed by Shenzhen Ediaper Technology Limited, Shenzhen (CN); and Sanwa Corporation, Tokyo (JP)
PCT Filed Oct. 20, 2020, PCT No. PCT/CN2020/122250
§ 371(c)(1), (2) Date Apr. 19, 2022,
PCT Pub. No. WO2021/078124, PCT Pub. Date Apr. 29, 2021.
Claims priority of application No. 19131232.1 (HK), filed on Oct. 20, 2019; and application No. 19131837.7 (HK), filed on Nov. 4, 2019.
Prior Publication US 2022/0287888 A1, Sep. 15, 2022
Int. Cl. G01N 27/22 (2006.01); A61F 13/15 (2006.01); A61F 13/42 (2006.01); A61F 13/53 (2006.01)
CPC A61F 13/42 (2013.01) [A61F 13/15739 (2013.01); A61F 2013/5307 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A sensor for realizing double-sided directional weighted and quantified wet state detection, comprising a sensing strip, which comprises an upper sensing surface and a lower sensing surface, adapted to realize the quantified wet state detection for the upper and lower sides respectively, and the wet state of the upper and lower surfaces can be weighted and output according to a preset specific gravity, thereby a weighted and quantified wet state information related to a specific layer and a specific direction of a specific detection object is provided, wherein the sensing strip comprises an upper waterproof film corresponding to the upper sensing surface and a lower waterproof film corresponding to the lower sensing surface, a sensing layer is comprised between the upper and lower waterproof films, and the sensing layer is covered by the upper and lower waterproof films, and the sensing strip comprises a first detection electrode and a second detection electrode, and the first and second detection electrodes are disposed in the sensing layer,
wherein the first detection electrode is completely covered by the upper and lower waterproof films and has no contact with liquid to be detected during operation, and at least a part of the second detection electrode is exposed to the outside through an interlayer edge of the upper and lower waterproof films or incision or slit provided on the waterproof film and contacts the liquid to be detected containing electrolyte, the liquid to be detected is made equipotential with it to form a liquid electrode.