Title:
異常判定装置
Document Type and Number:
Japanese Patent JP3753122
Kind Code:
B2
Abstract:
A fault detection system for detecting a fault in a sensor based on a resistance of a sensor element includes a detector that detects the resistance of the sensor element, and a heating device that heats the sensor element. A controller of the system calculates an accumulated value of energization time of the heating device or an accumulated value of a characteristic value corresponding to the energization time of the heating device, and detects a fault in the sensor based on the resistance of the sensor element and the accumulated value.
Inventors:
Yusuke Suzuki
Application Number:
JP2002329744A
Publication Date:
March 08, 2006
Filing Date:
November 13, 2002
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
G01N27/26; G01N27/419; F02D41/22; F02D45/00; G01D3/08; G01D21/00; G01M99/00; G01N27/407; G01N27/416; G01N27/417
Domestic Patent References:
| JP4501613A |
Attorney, Agent or Firm:
Hideki Takahashi
Mamoru Takada
Atsushi Hirayama
Mamoru Takada
Atsushi Hirayama