Method and apparatus for diagnosing and isolating faulty sensors in a redundant sensor system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 19, 1998
Grant Date -
N/A
app pub date -
Jul 30, 1996
filing date -
Jul 30, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A sensor failure and detection apparatus and method for use in a redundant sensor system are disclosed. A control circuit disconnects reference power supplied to a sensor and then monitors the voltage decay output by the sensor. The monitored rate of voltage decay of the sensor is compared to the expected natural voltage decay of the sensor to detect failures caused by short or open circuits. An error counter keeps track of the number of failures. After a threshold number of times in which the monitored voltage decay does not compare to a predicted rate of decay, power to the sensor is removed and the sensor is isolated from the system.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully