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GODOY, E. P. Development of a Performance Analysis Tool of CAN-Based Networks for Application in Agricultural Systems. 2007. 93f. Dissertation (Master of Science) – School Engineering of Sao Carlos, University de Sao Paulo, Sao Carlos, 2007. This work has base in the demand of research and development of data communication networks (fieldbus) to support the integration of control and automation devices for applications in agricultural systems. Agricultural systems related with the Precision Agriculture practices, with the embedded systems in agricultural machinery and with the greenhouses control and livestock systems. It is also guided by the efforts on the implementation of ISO11783 standard. The ISO11783 (also called ISOBUS) standard communication link is a common tendency to integrated different devices on agricultural machinery through an embedded control network. The ISOBUS use the Controller Area Network (CAN) as a data link protocol to perform the data communication. The correct definition of the data link configuration parameters represents one of the main challenges related to the design of CAN-based networks. The definition of these parameters has influence in the performance of the analyzed network. This work presents the research and the development of a performance analysis tool of CAN-based networks for applications in agricultural systems. This development consists of the systematization and validation of a CAN mathematical model. An analysis methodology is proposed to use the mathematical model. A simulation software was built and implements the methodology. It is expected that the implemented methodology facilitates the analysis tasks of the configuration parameters of the applications. The result obtained may assist in the performance evaluation and in the definition of an optimized configuration for the network based on CAN protocol and ISO11783 standard.

Desenvolvimento de uma ferramenta de análise de desempenho de redes CAN (Controller Area Network) para aplicações em sistemas agrícolas