Title:
OXYGEN MEASUREMENT DEVICE AND OXYGEN MEASUREMENT METHOD
Document Type and Number:
Japanese Patent JP2020125928
Kind Code:
A
Abstract:
To provide an oxygen measurement device and an oxygen measurement method for reducing the influence of a low oxygen atmosphere.SOLUTION: An oxygen measurement device according to one aspect includes a solid electrolyte, first and second electrodes, a cover, a power source, an ammeter, and a controller. The solid electrolyte has first and second surfaces and conducts oxygen ions. The first and second electrodes are arranged on the first and second surfaces, respectively. The cover has an internal space that covers the first surface and that is arranged above the first electrode, and a hole that connects the internal space and the outside. The power source applies a voltage between the first and second electrodes. The ammeter measures a current flowing between the first and second electrodes. The control unit obtains an oxygen concentration based on the current, and, if the oxygen concentration is smaller than a reference value, controls the power source so that (1) a voltage waveform including a period in which the first electrode side is positive and the second electrode side is negative is applied to the first and second electrodes or (2) a connection between the first and second electrodes is short-circuited.SELECTED DRAWING: Figure 1
Inventors:
OKAZAKI YUKIMOTO
YAGYU MOTOSHIGE
OSADA NORIKAZU
TAKAHASHI MANAMI
HANYU HIROHITO
YAGYU MOTOSHIGE
OSADA NORIKAZU
TAKAHASHI MANAMI
HANYU HIROHITO
Application Number:
JP2019017304A
Publication Date:
August 20, 2020
Filing Date:
February 01, 2019
Export Citation:
Assignee:
TOSHIBA CORP
TOSHIBA ENERGY SYSTEM & SOLUTION CORP
TOSHIBA ENERGY SYSTEM & SOLUTION CORP
International Classes:
G01N27/41
Domestic Patent References:
| JPS62231156A | 1987-10-09 | |||
| JP2001013106A | 2001-01-19 | |||
| JPH10142191A | 1998-05-29 | |||
| JPH0221259A | 1990-01-24 | |||
| JPH11304758A | 1999-11-05 | |||
| JPS6338155A | 1988-02-18 |
Attorney, Agent or Firm:
Patent Business Corporation Sakura International Patent Office