Abnormality detecting device for gas sensor

Details Abnormality detecting device for gas sensor Abnormality detecting device for gas sensor

2006-02-07

2006-02-07

Bui, Bryan (Department: 2863)

Data processing: measuring, calibrating, or testing

Measurement system

Performance or efficiency evaluation

C702S183000, C204S401000

Reexamination Certificate

active

06996499

ABSTRACT:
In a device for detecting an abnormality of a gas sensor having a detected cell in which a pair of electrodes are provided on a solid electrolyte material, a microcomputer temporarily inputs a test signal including an alternating current component to a signal line connected to the electrode and detects a response signal developing in response to the test signal. If there is no disconnection in the cell, a current corresponding to the alternating current component flows between the electrodes due to a parasitic capacity of the cell to produce the response signal. If there is a disconnection therein, the magnitude of the response signal becomes zero. Therefore, if a detection value of the response signal falls below a reference value, a decision is made that a disconnection abnormality occurs in the cell. This enables a disconnection in the gas sensor to be detected with accuracy.

REFERENCES:
patent: 5558752 (1996-09-01), Wang et al.
patent: 5709198 (1998-01-01), Sagisaka et al.
patent: 6096186 (2000-08-01), Warburton
patent: 6164125 (2000-12-01), Kawase et al.
patent: 8-271475 (1996-10-01), None
patent: 11-6812 (1999-01-01), None
patent: 2002-202285 (2002-07-01), None

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