Automatic decision for self-diagnosis triggering in safety relevant sensors

A pressure sensor module includes a pressure sensor configured to periodically measure an internal air pressure within an enclosure and generate a sensor signal having plurality of sensor values; a signal processing chain for conditioning the sensor signal to generate a plurality of conditioned sens...

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Bibliographische Detailangaben
Hauptverfasser:	Mihaescu, Radu, Mocanu, Dan-Alexandru, Cristea, Ilie-Ionut
Format:	Patent
Sprache:	eng
Schlagworte:	DEVICES OR ARRANGEMENTS RELATED TO TYRES MEASURING MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE PERFORMING OPERATIONS PHYSICS REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL TESTING TRANSPORTING TYRE CHANGING OR REPAIRING TYRE INFLATION VEHICLE TYRES VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	A pressure sensor module includes a pressure sensor configured to periodically measure an internal air pressure within an enclosure and generate a sensor signal having plurality of sensor values; a signal processing chain for conditioning the sensor signal to generate a plurality of conditioned sensor values; a memory configured to store each of the plurality of conditioned sensor values; and a processing circuit coupled to the pressure sensor via the signal processing chain for receiving a current conditioned sensor value and coupled to the memory for receiving a previous conditioned sensor value. The processing circuit is configured monitor for a fault, including calculating a delta pressure value between the current and previous conditioned sensor values, comparing the delta pressure value to a pressure threshold value, and triggering a diagnostic of the signal processing chain if the delta pressure value is greater than the pressure threshold value.