Title:
DRYNESS SENSOR
Document Type and Number:
WIPO Patent Application WO/2018/155289
Kind Code:
A1
Abstract:
A dryness sensor (1) is provided with the following: a first bandpass filter (32) that extracts a first wavelength range of light the amount of which that is absorbed by water being large; a second bandpass filter (42) that extracts a second wavelength range of light the amount of which that is absorbed by water being less than that of the first wavelength range of light; a first light-receiving unit (33) that converts the first wavelength range of light, which was reflected by an object (2) and passed through the first bandpass filter (32), to a first electrical signal; a second light-receiving unit (43) that converts the second wavelength range of light, which was reflected by the object (2) and passed through the second bandpass filter (42), to a second electrical signal; and a calculation processing unit (56) that detects the dryness of the object (2) on the basis of the first electrical signal and the second electrical signal. The center wavelength of the first wavelength region and the center wavelength of the second wavelength region are a combination selected from 1400-1600nm wavelengths and are a combination by which a signal ratio change according to each of a plurality of material candidates constituting the object (2) can be obtained.
More Like This:
| JP2017194348 | DRYNESS MEASUREMENT DEVICE AND WET STEAM INSPECTION DEVICE |
| JP5359832 | Gas analyzer |
| JP6664926 | Dryness measuring device |
Inventors:
WATABE YOSHIFUMI
MATSUNAMI HIROTAKA
BABA TORU
MATSUNAMI HIROTAKA
BABA TORU
Application Number:
PCT/JP2018/005161
Publication Date:
August 30, 2018
Filing Date:
February 15, 2018
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
G01N21/3554; G01N21/27; H01L31/0232; H01L31/10
Domestic Patent References:
| WO2016015765A1 | 2016-02-04 |
Foreign References:
| JPH10232200A | 1998-09-02 | |||
| JPS61500931A | 1986-05-08 | |||
| JPH06123700A | 1994-05-06 |
Other References:
NITTA, MITSUYOSHI ET AL.: "Near infrared spectrum of fabric", LECTURE ABSTRACTS OF THE 2003 MOLECULAR STRUCTURE GENERAL DISCUSSION MEETING, 20 September 2003 (2003-09-20)
Attorney, Agent or Firm:
KAMATA Kenji et al. (JP)
Download PDF:
Previous Patent: POROUS FILM, SEPARATOR FOR SECONDARY BATTERIES, AND SECONDARY BATTERY
Next Patent: OPTICAL TYPE COMPONENT SENSOR
Next Patent: OPTICAL TYPE COMPONENT SENSOR