US 11,913,892 B2
Condensation detection element
Jin Kawakita, Ibaraki (JP)
Assigned to NATIONAL INSTITUTE FOR MATERIALS SCIENCE, Ibaraki (JP)
Appl. No. 17/292,947
Filed by NATIONAL INSTITUTE FOR MATERIALS SCIENCE, Ibaraki (JP)
PCT Filed Nov. 11, 2019, PCT No. PCT/JP2019/044040
§ 371(c)(1), (2) Date May 11, 2021,
PCT Pub. No. WO2020/100778, PCT Pub. Date May 22, 2020.
Claims priority of application No. 2018-212358 (JP), filed on Nov. 12, 2018.
Prior Publication US 2022/0003701 A1, Jan. 6, 2022
Int. Cl. G01N 25/66 (2006.01); G01N 25/56 (2006.01); G01N 27/04 (2006.01); G01N 27/30 (2006.01); G01N 27/403 (2006.01)
CPC G01N 25/66 (2013.01) [G01N 25/56 (2013.01); G01N 27/048 (2013.01); G01N 27/30 (2013.01); G01N 27/403 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A condensation detection element comprising
a condensation detection unit, the condensation detection unit being formed on a first substrate unit, and
a peripheral circuit unit, the peripheral circuit unit being formed on a second substrate unit,
wherein the condensation detection unit comprises a thin wire electrode of a first metal and a thin wire electrode of a second metal, the second metal being different from the first metal,
wherein the thin wire electrode of the first metal and the thin wire electrode of the second metal are disposed in juxtaposition with each other,
wherein the condensation detection unit is configured to detect the presence or absence of water droplet that comes into contact with the thin wire electrode of the first metal and the thin wire electrode of the second metal by a current flowing between the thin wire electrode of the first metal and the thin wire electrode of the second metal,
wherein the peripheral circuit unit comprises at least an output unit that outputs an electrical signal when condensation due to the water droplet is detected, and
wherein the first substrate unit has a higher thermal conductivity and a lower heat capacity than the second substrate unit.