SENSOR COMMUNICATION DISCRETE CONTROL CONSIDERING EMC COMPLIANCE FOR RESTRAINT CONTROL MODULE

An electronic control unit for a restraint control module comprises a PSI5 communications interface configured to communicate with a remote sensor using a current-modulated signal with PSI5 compliance upon a two-wire interconnection. The PSI5 communications interface includes a signal driver configu...

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Bibliographische Detailangaben
Hauptverfasser:	KOCH, Stuart, HUNT, Nick, CAMPBELL, Michael, SCOTT, Grant, COLAROSSI, Vincent
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY PERFORMING OPERATIONS TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION TRANSPORTING VEHICLES IN GENERAL VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR
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Beschreibung
Zusammenfassung:	An electronic control unit for a restraint control module comprises a PSI5 communications interface configured to communicate with a remote sensor using a current-modulated signal with PSI5 compliance upon a two-wire interconnection. The PSI5 communications interface includes a signal driver configured to apply a signal voltage to a first signal terminal for driving current to the remote sensor via the two-wire interconnection. The PSI5 communications interface also includes a second signal terminal providing a return path for the current; and a resistor within the return path of the PSI5 communications interface. Several different alternative impedance balancing and damping circuits are provided to provide the resistor. The alternative impedance balancing and damping circuits include passive and active resistors. The impedance balancing and damping circuit may also provide current protection against damage due to fault currents. A method for operating a PSI5 communications interface of a restraint control module is also provided.