Avionics system of an aircraft comprising line replaceable units that can exchange messages between them and device for monitoring such an avionics system

摘要

An aircraft avionics system comprising rack mounted line replaceable units that exchange messages between them via a bus. The avionics system comprises a monitoring device arranged in the rack comprising a connector electrically linked to the bus and into which a rack mounted line replaceable unit is plugged, to be electrically linked to the bus. The monitoring device also monitors the messages exchanged, via the bus, between the line replaceable unit plugged into its connector and other units of the avionics system. The monitoring device comprises an acquisition unit to acquire signals transmitted or received by the line replaceable unit plugged into the connector during the exchange of messages with at least one other unit of the avionics system, for converting the signals into storable digital data and for assigning clock data to the data, and a storage unit for storing the storable digital data and the clock data.

主权项

1. An avionics system of an aircraft comprising line replaceable units that can exchange messages between them via a bus, said replaceable units being mounted in a rack, said avionics system comprising:
a monitoring device arranged in said rack comprising a connector electrically linked to said bus and into which a line replaceable unit mounted in said rack is plugged to be electrically linked to said bus, said monitoring device being configured to monitor the messages exchanged, via said bus, between said line replaceable unit plugged into its connector and other units of the avionics system, wherein said monitoring device comprises: an acquisition unit for acquiring the signals transmitted or received by said line replaceable unit plugged into said connector during the exchange of messages with at least one other unit of said avionics system, for converting said signals into storable digital data and for assigning clock data to said data, a storage unit for storing the storable digital data and the corresponding clock data, and a communication unit for transmitting to a remote analysis apparatus said data stored by said storage unit.