Title:
TEMPERATURE ALARM SYSTEM, TEMPERATURE ALARM METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2020/044679
Kind Code:
A1
Abstract:
This temperature alarm system is provided with: a temperature control unit (40) that causes a current to flow through an electric heating wire (20x) of an electric resistance heater (20) so as to increase the temperature of a to-be-heated object (90) to a predetermined target temperature, the electric heating wire (20x) being formed of a nickelchromium wire of which the against-temperature resistance characteristics have a maximum and a minimum; a resistance calculation unit (44) that measures, as a temperature-increase-time resistance value, a resistance value exhibited by the electric heating wire (20x) moment by moment during the increase in the temperature of the to-be-heated object (90) by the temperature control unit (40); a maximum/minimum determination unit (46) that determines whether or not the temperature-increase-time resistance value shows the maximum or minimum during the increase in the temperature of the to-be-heated object (90); and an alarm signal creation unit (47) that creates an alarm signal corresponding to the maximum or minimum when the temperature-increase-time resistance value shows the maximum or minimum.
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Inventors:
YAMADA TAKAAKI (JP)
WAKABAYASHI TAKESHI (JP)
NISHIDE MIHO (JP)
WAKABAYASHI TAKESHI (JP)
NISHIDE MIHO (JP)
Application Number:
PCT/JP2019/020614
Publication Date:
March 05, 2020
Filing Date:
May 24, 2019
Export Citation:
Assignee:
OMRON TATEISI ELECTRONICS CO (JP)
International Classes:
H05B3/00
Foreign References:
| JP2006266512A | 2006-10-05 | |||
| US20170359857A1 | 2017-12-14 | |||
| JP2004278905A | 2004-10-07 | |||
| JP2005181946A | 2005-07-07 |
Attorney, Agent or Firm:
YAMAO, Norihito et al. (JP)
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