Sensor fault detection
AssigneeBritish Gas Corporation
InventorDavid M. Sutton
Life of this patent
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Abstract
Apparatus is provided for detecting faults in a sensor providing an output voltage representative of aeration of a combustible mixture. The apparatus comprises a control box which checks whether the value of a reference voltage with which the output voltage is compared to control the aeration is suitable for causing an intended value of the aeration to be maintained.
Claims7
Apparatus for compensating for faults in a sensor providing an output signal representative of the aeration of a combustible mixture, the apparatus comprising means for checking whether a current value of a stored reference signal with which the output signal is compared to control the aeration is suitable for causing an intended value of aeration to be maintained, means for estimating a corrected value of the stored reference signal in the event that a current value of the stored reference signal is found on checking not to be suitable for causing an intended value of aeration to be maintained and means for storing the corrected value of the reference signal with which the output signal is then compared.
Dependencies are inferred from the claim text.