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Patent Searching and Data


Title:
GAS COMPONENT MEASURING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/187530
Kind Code:
A1
Abstract:
An exhalation gas component measuring device 100 of the present invention is provided with: a cell for trapping a first gas to be measured; gas sensors 1a to 1c that react to one or more types of component gases inside the cell 2; a humidifier 6 and a pump 4 that adjust the humidity inside the cell 2; a humidity sensor 1d that detects the humidity inside the cell 2; and an integrated circuit. Before the first gas is trapped inside the cell 2 or after the first gas is discharged from the cell 2, the integrated circuit controls the humidifier 6 and the pump 4 so that the humidity inside the cell 2 is within a predetermined range, acquires first response values of the gas sensors 1a to 1c when the humidity has been adjusted, acquires second response values of the gas sensors 1a to 1c when the first gas has been trapped inside the cell 2, and determines the concentration of one or more types of component gases included in the first gas from the first response values and the second response values.

Inventors:
NAKAMURA KUNIHIKO
Application Number:
PCT/JP2019/001599
Publication Date:
October 03, 2019
Filing Date:
January 21, 2019
Export Citation:
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Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
G01N27/12; G01N1/02; G01N1/28
Foreign References:
US20010027678A12001-10-11
JPH0599868A1993-04-23
Other References:
NAKAMURA, K. ET AL.: "Determination of low concentration of multi-target gas species exhaled with the breath", ECS TRANSACTIONS, vol. 75, no. 16, 2016, pages 83 - 90, XP055640952
Attorney, Agent or Firm:
KAMATA Kenji et al. (JP)
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