Vehicle communication component and process having active overvoltage protection

摘要

An active overvoltage protection process and device is disclosed to protect vehicle communication components. The overvoltage protection process and device includes determining an allowed low and high voltage threshold range for a communication interface, monitoring the communication interface, and disconnecting the communication interface when a voltage of the communication outside a threshold range.

主权项

1. An active overvoltage protection device to protect a vehicle communication component comprising:
a voltage determination circuit configured to determine an allowed low and high communication voltage threshold range for a communication interface; a voltage monitoring circuit configured to monitor a communication voltage of the communication interface; and a disconnection circuit configured to disconnect pins of the communication interface when the communication voltage of the communication interface is outside the voltage threshold range and prevent a connection of the pins of the communication interface when the connection has not been previously made and when the communication voltage of the communication interface is outside the voltage threshold range, wherein the disconnection circuit includes a multiplexer positioned between communication protocol drivers and a vehicle cable connector.