METHOD AND APPARATUS TO MONITOR A TEMPERATURE SENSING DEVICE
12 Assignments
0 Petitions
Accused Products
Abstract
A method and an article of manufacture are provided to monitor a temperature sensing circuit and detect a fault therein. The method comprises monitoring sensor readings output from a plurality of temperature sensing circuits. An average sensor reading is determined, calculated from the sensor readings output from a subset of the temperature sensing circuits. Each of the sensor readings is compared to the average sensor reading. A fault is identified when one of the sensor readings deviates from the average sensor reading by an amount greater than a threshold, more particularly when one of the sensor readings deviates from the average sensor reading by an amount greater than the threshold at least a quantity of X times out of Y sensor readings.
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Citations
20 Claims
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1. (canceled)
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5. Method to detect a fault in a temperature sensing circuit, comprising:
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monitoring sensor readings output from a plurality of temperature sensing circuits operative to monitor an electrical machine and machine control circuits, calculating an average sensor reading from the sensor readings output from a subset consisting of the temperature sensing circuits operative to monitor the machine control circuits; comparing each of the sensor readings to the average sensor reading; and determining when one of the sensor readings deviates from the average sensor reading by an amount greater than a threshold. - View Dependent Claims (2, 3, 4, 6, 7)
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8. Method for monitoring temperatures of an electrical machine and a machine control circuit, comprising:
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monitoring sensor readings output from a plurality of temperature sensors operative to monitor the electrical machine and the machine control circuit; determining an average sensor reading calculated from the sensor readings output from a subset consisting of less than all of the temperature sensors; identifying a fault in one of the temperature sensors when one of the sensor readings deviates from the average sensor reading by an amount greater than a threshold. - View Dependent Claims (9, 10, 11, 12, 13)
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14. Article of manufacture, comprising a storage medium having machine-executable code encoded therein for effecting a method to monitor a plurality of temperature sensing circuits operative to monitor temperature of electrical power control circuits and an electrical machine, the code comprising:
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code to monitor sensor readings output from the temperature sensing circuits; code to determine an average sensor reading calculated from a subset consisting of less than all of the monitored sensor readings; code to identify a fault in one of the temperature sensing circuits when one of the monitored sensor readings deviates from the average sensor reading by an amount greater than a threshold. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification