Diagnostic system and method for a thermistor amplifier circuit
A diagnostic system (40) and a diagnostic method for a thermistor amplifier circuit (30) are provided. The system includes a transistor (100) electrically coupled to a controllable variable resistor (102) having a predetermined resistance. The transistor (100) applies a test voltage signal to the ci...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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Zusammenfassung: | A diagnostic system (40) and a diagnostic method for a thermistor amplifier circuit (30) are provided. The system includes a transistor (100) electrically coupled to a controllable variable resistor (102) having a predetermined resistance. The transistor (100) applies a test voltage signal to the circuit indicative of a first temperature value. An amplitude of the test voltage value is indicative of a simulated thermistor temperature value. The microprocessor (190) determines a test temperature value based on the amplitude of an output voltage of the circuit (30). The microprocessor (190) also determines an inaccuracy value based on the test temperature value and the simulated thermistor temperature value. |
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