Title:
TEMPERATURE DETECTION FUNCTION DIAGNOSTIC DEVICE
Document Type and Number:
Japanese Patent JP2016206040
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a temperature detection function diagnostic device that allows diagnosis of a temperature detection function of an excess temperature detection circuit or a temperature sensor, as well as detection of abnormalities of the temperature detection function due to degradation with time.SOLUTION: The temperature detection function diagnostic device includes: a temperature sensor outputting temperature information; an excess temperature detection circuit outputting an excess temperature detection signal when a temperature is higher than a predetermined threshold temperature; threshold value changing means changing a threshold value of the excess temperature detection circuit; and temperature detection function determination means determining the presence of abnormalities in at least one of the excess temperature detection circuit and the temperature sensor based on the correspondence between an output of the excess temperature detection circuit when the threshold value thereof has been changed by the threshold value changing means and an output of the temperature sensor.SELECTED DRAWING: Figure 1
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Inventors:
KAWADA TAKAHIRO
ARATA SUMIYUKI
ARATA SUMIYUKI
Application Number:
JP2015088888A
Publication Date:
December 08, 2016
Filing Date:
April 24, 2015
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD
International Classes:
G01K15/00; G01K7/00; G05B9/02
Domestic Patent References:
| JP2003344177A | 2003-12-03 | |||
| JPH10334360A | 1998-12-18 | |||
| JPH0988708A | 1997-03-31 |
Attorney, Agent or Firm:
Manabu Inoue
Yuji Toda
Shigemi Iwasaki
Yuji Toda
Shigemi Iwasaki