Embodiments relate to a speed sensor device including a sensor element to provide a sensor signal, a status module to provide status information of the speed sensor device; and a processing module to generate an output signal. The output signal is derived from the sensor signal, if the status information is indicative of a non-critical state of the speed sensor device, and the output signal is a safety message signal having signal edges such that time intervals between subsequent congeneric signal edges are equal to or shorter than a preselected threshold, if the status in-formation is indicative of a critical state of the speed sensor device. An Electronic Control Unit (ECU) includes an interface for receiving a signal having signal edges from a speed sensor device and a processing unit to analyze time intervals between subsequent congeneric signal edges. The processing unit is configured to determine a non-critical state of the speed sensor device, if the time intervals are higher than a preselected thresh-old, and to determine a critical state of the speed sensor device, if the time intervals between two subsequent congeneric signal edges are equal to or shorter than the preselected threshold.
SPEED SENSOR DEVICE, SPEED SENSOR METHOD, ELECTRONIC CONTROL UNIT AND CONTROL METHOD
2015-09-24
Patent
Elektronische Ressource
Englisch
IPC: | G01P MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION OR SHOCK , Messen der Linear- oder Winkelgeschwindigkeit, der Beschleunigung, der Verzögerung oder des Stoßes / B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF / G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen |
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