The existence of high load and latency in the CAN bus network would indeed lead to a situation where a given message crosses its deadline; this situation would disturb the continuity of the required service as well as activating fault codes due to delay of message delivery, which might lead to system failure. The outcome and goal of this thesis is to research and formulate methods to determine and model busload and latencies, by determining parameters such as alpha and breakdown utilization, which are considered as indications to the start of network breakdown when a given message in a dataset start to introduce latency by crossing its deadline which are totally prohibited in critical real time communications. The final goal of this master thesis is to develop a TOOL for calculating, modeling, determining and visualizing worst case busload, throughput, networks’ breakdown points and worst case latency in Scania CAN bus networks which is based on the J1939 protocol. SCANLA (The developed CAN busload analyzer tool in this thesis) is running as an executable application and uses a Graphical User Interface as a human-computer interface (i.e., a way for humans to interact with the tool) that useswindows,icons and menus and which can be manipulated by a mouse.

Can Themba, unlike most of the other Drum writers, e. g. Todd Matshikiza, Es’kia Mphahlele, Bloke Modisane and Lewis Nkosi, did not write an autobiography, probably because he died at the young age of forty-three after prolonged, acute alcohol abuse. The aim of this dissertation is to trace his life and career as a journalist and short story writer during the 1950s, popularly known as the ‘Drum decade’, through (sometimes autobiographical) interpretation of his work, through interviews with and information from the autobiographies of his contemporaries, as well as through a close examination of material on Sophiatown. The dominant genre in the 1950s for black writers was the short story. Environmental circumstances seemed to have created a kind of live-for-today attitude, which suited the immediate, concentrated form. Admittedly, Themba’s short stories seem escapist, even melodramatic and sensational, but they do have a distinctive South African flavour, mirroring the plight of the township black in the 1950s. There are also hard-hitting journalistic pieces, emphasizing the day-to-day struggle of blacks living in a world controlled by a minority group of whites. Themba’s realistic, mostly autobiographical, sketches, seemed to fill the need for politically relevant journalism, although his contemporaries did not necessarily agree with this view. By examining what he wrote about himself, directly as well as indirectly, as well as what others have to say about him, an attempt will be made to create a biography of this informal cult figure, popularly known as an intellectual tsotsi, a shebeen intellectual, of the 1950s. This study will show that he was a versatile writer of popular short stories and hard-hitting sketches, as well as an astute social witness of his world. Although lately there has been a revival of interest in the period, very few critical works have become available. In fact, the interest seems almost superficial, highlighting the romantic notion of the 1950s as a devil-may-care period, in which the live-for-today attitude of its people was characterized by gangsterism, swanky cars and the so-called nice-time girls. This dissertation will attempt to highlight the overwhelming ambience of sadness, of wasted time and lives, of what could have been. Can Themba may be the ultimate example of writer-intellectual trapped in the ambiguous reality that was Sophiatown. His life and work illustrate how the boundaries between fantasy and reality can fade in such a way that a new kind of reality, an inter-racial bohemia, comes into existence. He not only captures African speech and the rhythm of tsotsitaal, but also uses the sharp wit and intricate phrases which illustrate his affinity with writers like Oscar Wilde. In this way his African roots and European education are fused. This phenomenon, which seems to be a unique characteristic of the 1950s, will be explored. Ultimately, though, an attempt will be made to demonstrate Can Themba’s relevance as a writer to a contemporary audience by illustrating that through his unique style he manages to recreate his original context, and therefore speaks to us today.

This master thesis report is a part of the thesis project conducted by Jakob Uhlin at Syntronic R R and D, Stockholm Sweden. The objective of this thesis is to develop a way to process the signal being sent on a CAN-bus and subsequently analyse its quality and its source in the network. A process of gathering appropriate theories and data has been done, parallel with the development of the analyzer module. The intelligence is implemented in an FPGA through the hardware description language VHDL. In this way, the algorithms can process the data in a real-time domain. The central findings and conclusions have been that is possible to analyze the signal quality of a CAN message properly on a FPGA.

Thèse de doctorat : Automatique et traitement du signal : INPL : 2008. / Titre provenant de l'écran-titre.

No description available.

Sistemas de controle precisam trabalhar com restrições temporais rigorosas para garantir seu correto funcionamento, sendo por isso considerados sistemas de tempo-real. Quando tais sistemas são distribuídos, as redes de sensores, atuadores e controladores estão interligados em geral, por redes de campo. Nesse contexto, as redes de campo desempenham um papel extremamente importante no comportamento global do sistema. O presente trabalho de pesquisa apresenta a descrição do processo de desenvolvimento de um system on-chip (SoC) para um sistema de controle. Diferentemente das abordagens clássicas, o trabalho está focado em implementar o sistema baseado em um paradigma diferenciado, baseado em lógica reprogramável. Apresenta-se o projeto e construção dos IP cores necessários para controlar um motor DC, utilizando o barramento control area network (CAN) para obter uma plataforma distribuída. A arquitetura on chip utilizada está baseada na especificação CoreConnect da IBM. São expostos, ainda, trabalhos de simulação tanto dos componentes isolados, como do sistema integrado, de forma a realizar uma comparação qualitativa do processo de desenvolvimento / Control systems require strict time constraints to work properly, being therefore considered real-time systems. When such systems are distributed, controllers, sensors, and actuators are generally interconnected by fieldbuses. In this context the fieldbuses play an important role in the system global behavior. This research presents the description of the development process of a system-on-chip SoC. Differentiated from the classical approaches, this work focus the implementation of a reprogrammable logic based system. This work explain the necessary IP cores implementation, allowing a DC motor control, using a control area network (CAN) bus to reach a distributed platform. The on-chip architecture used is based on the IBM CoreConnect specification. Moreover it shows isolated components and integral system simulations, in such a way to obtain a qualitative comparison of development processes

In the automotive industry today, embedded systems have reached a level of complexity which is not maintainable with the traditional approach of design- ing automotive embedded systems. For this purpose, many of the worlds leading automotive manufacturers have formed an alliance to apprehend this problem. This has resulted in AUTOSAR, an open standardized architecture for automotive embedded systems, which strives for increased flexibility and safety regulations. This thesis will explore the possibilities of implementing a CAN Communication stack using the AUTOSAR architecture and its corresponding methodology. As a result of this thesis, a complete AUTOSAR CAN communication stack has been implemented, as well has a simulator application with the purpose of testing its functionality.

The diploma thesis deals with CAN syndrome. The main goal of the thesis is to compare the knowledge of elementary school pupils, students of secondary schools and the general public about CAN syndrome. Another objective is to analyze the radiodiagnostic methods used to prove the effects of the syndrome. The last aim is to identify the position of the police for CAN syndrome. Within the main objective, two hypotheses were set. These hypotheses compared whether there is a statistically significant difference between the knowledge of primary school pupils and secondary school students, and secondary school students and the general public. To verify the hypotheses, a questionnaire survey was carried out and then descriptive and mathematical statistics were performed. The benefit of the diploma thesis is in gaining an overview about the knowledge of elementary school pupils, secondary school students and the general public of the CAN syndrome.

Sistemas de controle precisam trabalhar com restrições temporais rigorosas para garantir seu correto funcionamento, sendo por isso considerados sistemas de tempo-real. Quando tais sistemas são distribuídos, as redes de sensores, atuadores e controladores estão interligados em geral, por redes de campo. Nesse contexto, as redes de campo desempenham um papel extremamente importante no comportamento global do sistema. O presente trabalho de pesquisa apresenta a descrição do processo de desenvolvimento de um system on-chip (SoC) para um sistema de controle. Diferentemente das abordagens clássicas, o trabalho está focado em implementar o sistema baseado em um paradigma diferenciado, baseado em lógica reprogramável. Apresenta-se o projeto e construção dos IP cores necessários para controlar um motor DC, utilizando o barramento control area network (CAN) para obter uma plataforma distribuída. A arquitetura on chip utilizada está baseada na especificação CoreConnect da IBM. São expostos, ainda, trabalhos de simulação tanto dos componentes isolados, como do sistema integrado, de forma a realizar uma comparação qualitativa do processo de desenvolvimento / Control systems require strict time constraints to work properly, being therefore considered real-time systems. When such systems are distributed, controllers, sensors, and actuators are generally interconnected by fieldbuses. In this context the fieldbuses play an important role in the system global behavior. This research presents the description of the development process of a system-on-chip SoC. Differentiated from the classical approaches, this work focus the implementation of a reprogrammable logic based system. This work explain the necessary IP cores implementation, allowing a DC motor control, using a control area network (CAN) bus to reach a distributed platform. The on-chip architecture used is based on the IBM CoreConnect specification. Moreover it shows isolated components and integral system simulations, in such a way to obtain a qualitative comparison of development processes

This thesis describes the concept and  realization  of embedded system and cloud application, which is designed  for remote monitoring of car subsystems over CAN bus.    There are written several ways of getting information from car subsystems  and process of decoding messages sent over internal car bus.   Data gathering is realised by device based on ESP32, which is sending them to cloud application using wireless networks. Application UI is adapted for mobile devices and serves views containg current and historical gathered data.