SYSTEMS AND METHODS TO DETECT BUS NETWORK FAULT AND TOPOLOGY

摘要

Systems for helping identify faults on a bus, as well as to determine the topology of a bus network, are disclosed. A system according to one embodiment includes a bus interface for connecting to a bus and a switch coupled to the bus interface, the switch configured to alternate between an open state and a closed state. The system is connected to the bus via the bus interface when the switch is in the closed state, and the system is disconnected from the bus via the bus interface when the switch is in the open state.

主权项

1. A device comprising:
a bus interface to connect the device to a bus; a transceiver to transmit and receive data via the bus over the bus interface; and a fault isolation switch connected to the bus interface, where the fault isolation switch has an open state and a closed state, such that when the fault isolation switch is in the open state, the bus interface is disconnected from the bus and the transceiver is unable to transmit or receive data via the bus, and when the fault isolation switch is in the closed state, the bus interface is connected to the bus and the transceiver is able to transmit and receive data via the bus, wherein the fault isolation switch further comprises a fault detection circuit, wherein the fault detection circuit is configured to identify a fault associated with the bus, to alternate the fault isolation switch to the open state in response to identifying the fault; wherein the transceiver is configured to transmit data via the bus upon the fault isolation switch changing from the open state to the closed state to indicate a location of the device on the bus.