Abstract: A method for performing a maintenance function of a system under diagnosis includes a step for hierarchical decomposition of the system under diagnosis into sub-systems based on the model of the system and, for each sub-system, steps for determination of a model of the sub-system starting from the model of the system, and allocation of a diagnostic method depending on the processing and memory resources of said sub-system. The method allocated is a first diagnostic method based on the model of the system or a second diagnostic method based on predefined logical relationships. The method further includes calculation of the logical relationships for the sub-systems implementing the second diagnostic method, and the transfer of the logical relationships to the sub-systems implementing the second method and the transfer of the model to the sub-systems implementing the first method.

Abstract: A system and device is provided for formulating alerts of the items of equipment of an aircraft. The device includes a database of virtual objects representing the items of equipment for constructing a virtual model representative on the one hand of the topological configuration of the network of items of equipment and on the other hand of the configuration of the chain of functional applications implemented by the items of equipment, means for each virtual object to formulate a request for consulting the status of the functional application carried out by the item of equipment associated with the object and means for detecting alerts for formulating requests for consulting the status of each of the objects of the virtual model so as to detect anomalies of configuration of the topology of the network of items of equipment and of the chain of functional applications of the virtual model and to transmit the alerts associated with the anomalies. The device detects and manages the alerts of an aircraft.

Abstract: The invention relates to a device for system diagnosis of an aircraft. The device includes: means for the monitoring of equipment of the system, the means for emitting messages of observations on the basis of effects produced by equipment; means for the determination of a set of observations on the basis of the messages of observations arising from the monitoring of a log of the messages of observations and of a model representing a current state of the system; means for the determination of indictments on the basis of observations of the set of observations and of a behavioral model of the system, the indictments being logical relations between operating modes of equipment having produced effects; and means for the determination of maintenance operations on the basis of the indictments.

Abstract: A system and device is provided for formulating alerts of the items of equipment of an aircraft. The device includes a database of virtual objects representing the items of equipment for constructing a virtual model representative on the one hand of the topological configuration of the network of items of equipment and on the other hand of the configuration of the chain of functional applications implemented by the items of equipment, means for each virtual object to formulate a request for consulting the status of the functional application carried out by the item of equipment associated with the object and means for detecting alerts for formulating requests for consulting the status of each of the objects of the virtual model so as to detect anomalies of configuration of the topology of the network of items of equipment and of the chain of functional applications of the virtual model and to transmit the alerts associated with the anomalies. The device detects and manages the alerts of an aircraft.

Abstract: A method for performing a maintenance function of a system under diagnosis includes a step for hierarchical decomposition of the system under diagnosis into sub-systems based on the model of the system and, for each sub-system, steps for determination of a model of the sub-system starting from the model of the system, and allocation of a diagnostic method depending on the processing and memory resources of said sub-system. The method allocated is a first diagnostic method based on the model of the system or a second diagnostic method based on predefined logical relationships. The method further includes calculation of the logical relationships for the sub-systems implementing the second diagnostic method, and the transfer of the logical relationships to the sub-systems implementing the second method and the transfer of the model to the sub-systems implementing the first method.

Abstract: The invention relates to a device for system diagnosis of an aircraft. The device includes: means for the monitoring of equipment of the system, the means for emitting messages of observations on the basis of effects produced by equipment; means for the determination of a set of observations on the basis of the messages of observations arising from the monitoring of a log of the messages of observations and of a model representing a current state of the system; means for the determination of indictments on the basis of observations of the set of observations and of a behavioural model of the system, the indictments being logical relations between operating modes of equipment having produced effects; and means for the determination of maintenance operations on the basis of the indictments.