In modern integrated modular avionic systems, applications share hardware resources on a common avionic platform. Such an architecture necessitates strict requirements on the spatial and temporal p ...

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An optimisation approach for pre-runtime scheduling of tasks and communication in an integrated modular avionic system

Systems and methods for interference cognizant network scheduling are provided. In certain embodiments, a method of scheduling communications in a network comprises identifying a bin of a global timeline for scheduling an unscheduled virtual link, wherein a bin is a segment of the timeline; identifying a pre-scheduled virtual link in the bin; and determining if the pre-scheduled and unscheduled virtual links share a port. In certain embodiments, if the unscheduled and pre-scheduled virtual links don't share a port, scheduling transmission of the unscheduled virtual link to overlap with the scheduled transmission of the pre-scheduled virtual link; and if the unscheduled and pre-scheduled virtual links share a port:determining a start time delay for the unscheduled virtual link based on the port; and scheduling transmission of the unscheduled virtual link in the bin based on the start time delay to overlap part of the scheduled transmission of the pre-scheduled virtual link.

https://ntrs.nasa.gov/api/citations/20170009530/downloads/20170009530.pdf

Inteference cognizant network scheduling

The invention pertains to a display method, a computer program for performing steps of the display method and a display system. The display system (1) comprising: display means (2) comprising: a physical display unit (13)operable to display flight data,a display processing device (11), a graphics driver and a graphics processing device, fault detection means arranged to detect at least one fault condition associated to the display means (2). The display processing device is arranged to process a first task set associated to a normal operation mode and in parallel process a second task set associated to an emergency operation mode, wherein said display processing device is arranged to transmit information provided from the second task set to the graphics processing device in response to the detected at least one fault condition.

Flight data display

The invention pertains to display method, a computer program for performing the steps of the display method and a display system (1), the display system having for example: at least one display unit (13, 16) arranged to present at least one display image, at least one memory unit (12, 15) comprising information related to for example descriptions of a set of default graphics display objects (W1-W3) and configuration data.The configuration data is arranged to define:at least one transparent display layer (L1-L3), at least one transparent display container (CO0-CO2) associated to the at least one transparent display layer and at least one display mode. Each of said at least one display mode comprising a predetermined selection of one or more of said at least one transparent display container of one or more of said at least one display layer.

Flexible display system

A data transmission switch configured to be carried onboard an aircraft comprises: at least one input configured to receive data from a flight management computer on a first transmission channel, the channel functioning in multidirectional mode; at least one output configured to transmit the data to at least one avionic equipment on a second transmission channel, the switch further comprising a transducer configured to generate instructions for synchronization of the second transmission channel. The invention enables retrofitting to aircraft with an old avionic system under very economic conditions.

Switch for transmission of data between heterogeneous networks for aircraft

An avionics switched Ethernet network (1), for communication of data, the network comprising: a plurality of synchronized interconnected system nodes (N1-N3) each comprising: an avionics module (Al -A3) arranged to periodically provide a set of data messages, each comprising a set of data variables related to avionics functions, a network module (E1-E3) coupling the avionics module (Al -A3) to the network (1), said network module (E1-E3) comprising a network interface unit (15A- 15C) arranged to provide means for transmissions of data packets comprising a number of said set of data messages from said avionics module (Al -A3). According to the invention the network module (E1-E3) of each system node (N1-N3) comprise a transmission control unit arranged to control the network interface unit (15A- 15C) to perform scheduled transmissions of said data packets, wherein said transmission control unit is provided with access to memory means comprising scheduling information relating to a timing table comprising a plurality of time-slots (S1-S8) of predetermined duration within at least one periodically repeating communication time frame (125-128), wherein each of said plurality of time-slots (S1-S8) is statically allocated a predetermined number of data packets, each comprising a predetermined subset of data messages from said set of data messages.

Ethernet for avionics

A vehicular control system (1), the system comprising: display means (2, 3) each comprising a physical display unit (13, 16) and memory means (12, 15) comprising information related to descriptions of a plurality of displayable entities and first configuration data, associated to a first control module (C1-CN), said first configuration data comprising information on configuration of the displayable entities, based on references to the descriptions of the plurality of displayable entities. According to the invention the system comprises a plurality of display means (2, 3), the memory means (12, 15) of each display means (2, 3) is provided with a copy of the first configuration data, the first control module (C1-CN) is arranged to transmit data based on point-to-multipoint communication to each of the plurality of display means (2, 3), the plurality of display means (2, 3) each comprises processing means (11, 14) operatively coupled to said memory means (12, 15), said processing means (11, 14) arranged to process the entities based on received data from the first control module (C1-CN), and to present the result of the processing on the physical display unit (13, 16) of each of the display means (2, 3).

Hakegard Jan

Papers

Ethernet for avionics

Flight data display

A vehicular display system and a method for controlling the display system