Military Communications and Information Technology: A Trusted ...

100 Military Communications and Information Technology...
The maximum bus utilization by asynchronous messages occurs at the low
bit rate and at very frequent transmission of asynchronous messages.
The CANaerospace specification according to Michael Stock [5] recommends
bus utilization by synchronous messages from 80% to be prepared sufficient bus
capacity for eventual transmission of CANaerospace asynchronous messages. Great
bus utilization for asynchronous messages remains at long period of synchronous
transmitted message and at low bus bit rate. Conversely when the bit rate is maximal
and very small period of synchronous transmitted message, low bus utilization for
asynchronous messages remains, so these parameters must be chosen with respect
of CANaerospace specification recommendations
V. Conclusion
This hardware solution can gives us a unique instrument set able to communicate
thought CAN, able to detect their own faults with the same accuracy as prestigious
instrument for price of only few hundreds of euro (dollars). Since only one hardware
block is different at each instrument it is also cheap to maintain it in perfect shape.
Also the program running inside can be easily modified to fulfill any possible needs.
Application of the bus CAN with CANaerospace protocol to the avionic systems
is relatively new area. The bus CAN seem to be suitable for the implementation
because of its simple way of communication and high quality of diagnostic tools.
According to the mathematical analysis is evidenced, that the bus enables to provide
high number of messages, which is important for aircraft electronic systems.
Acknowledgment
The work presented in this paper has been supported by the Ministry of Defence
of the Czech Republic (K206 Department development program “Complex
aviation electronic system for unmanned aerial systems”).
References
[1] J. Cizmar, R. Jalovecky, “Development of a Digital Fuel Quantity Indicating System
for Aircraft.”, In: Proceeding of the International Conference on Military Technologies
„ICMT 2007“, Brno: Univerzita obrany, Brno, 2007, ISBN 978-80-7231-238-2.
[2] R. Bystricky, “Dynamic system mathematical model of UAV helicopter.”, Brno,
29.03.2010, Disertation thesis, University of Defence, Supervisor prof. Ing. Rudolf
Jalovecky, CSc (in Czech).
[3] R. Bystricky, J. Bajer, P. Janu, “Proposal of low cost flight data recorder for ultralight
aircraft.”, In: Modern Safety Technologies In Transportation, Košice, Slovensko:
Suprema Ltd., 2011, p. 54-59, ISSN 1338-5232, ISBN 978-80-970772-0-4.