Locating faults in a network

摘要

A network power fault detection method comprises instructing at least one first network device to temporarily disconnect from a power supply path of a network, and measuring, at a second network device connected to the network, at least one characteristic of the power supply path of the network while the first network device is temporarily disconnected from the network. The measured characteristic may be voltage and/or current from which impedance may be determined. The network device may comprise a receiver 210 coupled to a bus 202 to receive an instruction to disconnect. A switch 220 activates to disconnect the device and a measurement unit 230 measures a property. Impedance is calculated by unit 240 and may be communicated via the bus to another network device. Network topology can be used to determine fault location. The network may be on a vehicle and may be an electrical or optical network.