Denna rapport beskriver ett examensarbete för högskoleingenjörsexamen i datorteknik vid Växjö universitet, utfört av Philip Albertson. Vid företaget BSR i Växjö pågår utvecklingen av en ny teknik benämnd Web Based Diagnostics. Målet med projektet är att göra fordonsdiagnostik tillgängligt för bilägare till ett bra pris. Systemet består av tre delar; en modul som sätts i bilen, en server som hanterar informationen och en klient för att kunden ska kunna nå informationen. Min del i detta projekt var att identifiera hur sökta parametrar nås på CAN-bussen i bilar från VAG (Volkswagen Auto Group) och Saab. Företagets representanter var nöjda med resultatet då det utgör en bra grund för vidareutvecklingen av den prototyp för modulen som utvecklats av EDAB (Elektronik Design AB) i Sundsvall. / This abstract describes the bachelor degree thesis in computer technology at Växjö University written by Philip Albertson during the spring term of 2007. At the company BSR in Växjö, Sweden there is a new project under development called WBD – Web based diagnostics. The aim of the project is to make car diagnostics available to ordinary people at a decent cost. The system consists of three parts; a module to plug in the car, a server to handle the information and a client to allow the customers to reach the information about their car. My part in this project was to specify how to reach certain parameters on the CAN-bus in cars from VAG (Volkswagen Auto Group) and Saab. The company was satisfied with the results since they provided a good basis to further develop the module prototype built by the company EDAB (Elektronik Design AB) in Sundsvall, Sweden.

Jorge Hernando Pedraza. Abogado de la Universidad Externado de Colombia con postgrado en Gestión de Entidades Territoriales y estudios de Diplomacia y Relaciones internacionales. Actualmente Secretario General de la Comunidad Andina / Hoy la Comunidad Andina, integrada por Bolivia, Colombia, Ecuador y Perú, se ha convertido en el organismo más sólido de integración del continente, con una zona de libre comercio, normas supranacionales en diversos ámbitos de acción, derechos ciudadanos como el que permite viajar sin visa ni pasaporte por los cuatro países y otras recientemente aprobadas como la norma que elimina los costos de roaming internacional, el Estatuto Migratorio Andino, la Carta Ambiental Andina, el Observatorio del Mercurio, la decisión que promueve el empoderamiento de la mujer.

This master thesis focuses on design of steering wheel and clutch controller module for Formula Student car, The first part of this thesis is focused on communication protocol CAN and continues with explanation of reasons for development of this solution. Requirements for individual components of system are introduced in next part. At the end of the thesis the final electrical and hardware design is introduced as well as software design. The last part of this thesis is focused on simulation of system in race condition and evaluation of results.

This thesis is focused on obtaining data from a car via the OBDII interface. A successive analysis of the measured values, car sensors, control systems and communication principles between them is done. Basic principles for creating Android mobile applications have been also summarized here. However, the main focus is on designing an application which uses a microcontroller ELM327 to communicate with the electronic systems of a real car. The application shows the obtained data in a form that enables the driver to improve his/her driving habits in terms of fuel economy. The application also demonstrates communication with a car outside of the OBDII standard, in this scenario, by controlling a built-in radio in the car.

Since the mid 90's computer communication has become more and more common in cars and other auto mobiles. CAN based networks with sensors transmitting small data packets are utilized in the automotive industry to operate and supervise vehicles' functionality. To ease communication several higher layer protocols for CAN based networks have been developed. In some applications it is necessary to exchange information between networks using different protocols, and by connecting the two networks to a gateway, the information is translated and forwarded and intercommunication is enabled. This master thesis is conducted at Torqeedo GmbH, Munich. Theme of the thesis was “Designing and Development of a Data Logging and Monitoring Tool”. Term “data logging” refers to the gathering or collection of specific data over a period of time. Monitoring means evaluate the data we are logging. Tools for data logging and monitoring are used in variant application these days. In medical, in-vehicle data logging and environment monitoring. This data could be voltage, current temperature, Time stump, heartbeat of the patient, vehicle fuel level etc. To capture and log data various communication channels used. Such channel varies from simple data cable to satellite link. There are variant protocols used for different communication channels. For our DBHS logging and monitoring tool we are using CANopen protocol. Main goal of this thesis is to develop a tool which can make debugging easy and log connection box data so we can use logged data later on for offline data analysis and simulation purposes.

During some operations the brake system on a truck is exposed to severe stress and hightemperatures. To ensure function and safety during these operations, Scania test thebrake system both test rigs and in actual trucks around the world. There are tests thatare regulated by law that the truck manufacture must pass to be allowed to sell its vehicleand there are Scania internal tests to validate performance and quality. One of thoseinternal Scania tests is a severe test with extreme temperatures, called the Rossfeld-test,performed at the Rossfeld slope in the German Alps. The idea is that the truck rolls downthe slope only accelerated by the downhill force where the wheel brakes will be appliedwhen the vehicle speed passes 35 km/h and released when going slower than 25 km/h,this is repeated until the end of the slope. No auxiliary brakes are used. The objective of this thesis is to investigate the possibility of using a Scania truck as a testbench to perform a simulation of a truck rolling down a descent. And by this investigatethe possibility of recreating a wheel brake test as the Rossfeld-test on a horizontal roadby using the engine as the source of acceleration instead of the gravity. In this thesis a model was developed in Matlab/Simulink which through the CAN-busnetwork in the truck could request engine torque and brake pressure. Given the roadtopography of the actual German slope, the corresponding downhill force was calculatedand requested of the engine and brake pressure was applied when the truck passed 35km/h and released again when reaching 25 km/h. The model was verified against roll-tests performed in known slopes with three, eightand sixteen percent gradient. Results from simulations with the truck showed a biggerinconsistency with respect to acceleration and gear selection when requesting a low torqueas with the simulation of a 3% slope. This was not the case when requesting a highertorque as when simulating a 8% or 16% slope. The results showed that at a highertorque request the acceleration was more consistent but the truck was still acceleratingslower than the corresponding roll-test and an extra twelve percent of torque was addedto mimic the acceleration of the roll-test. The first 3000 m of the Rossfeld-slope wassimulated by driving in a circle and the temperature measurements catches the differencesin temperature build up as in the result from a real Rossfeld-test performed in the Germanalp. This shows there is a potential in this type of simulation.

No description available.

Inspired by the idea of vision zero, there is a lot of work that needs to be done in the field of advance driver assistance systems to develop more safer systems. Driver intention detection with a prediction of upcoming behavior of the driver is one possible solution to reduce the fatalities in road traffic. Driver intention detection provides an early warning of the driver's behavior to an Advanced Driver Assistance Systems (ADAS) and at the same time reduces the risk of non-essential warnings. This will significantly reduce the problem of warning dilemma and the system will become more safer. A driving maneuver prediction can be regarded as an implementation of driver's behavior. So the aim of this thesis is to determine the driver's intention by early prediction of a driving maneuver using Controller Area Network (CAN) bus data. The focus of this thesis is to optimize and further develop an algorithm for driver intention detection with fuzzy logic and edit distance method. At first the basics concerning driver's intention detection are described as there exists different ways to determine it. This work basically uses CAN bus data to determine a driver's intention. The algorithm overview with the design parameters are described next to have an idea about the functioning of the algorithm. Then different implementation tasks are explained for optimization and further development of the algorithm. The main aim to execute these implementation tasks is to improve the overall performance of the algorithm concerning True Positive Rate (TPR), False Positive Rate (FPR) and earliness values. At the end, the results are validated to check the algorithm performance with different possibilities and a test drive is performed to evaluate the real time capability of the algorithm. Lastly the use of driver intention detection algorithm for an ADAS to make it more safer is described in details. The early warning information can be feed to an ADAS, for example, an automatic collision avoidance or a lane change assistance ADAS to further improve safety for these systems.

Construction equipment such as wheel loaders and dumpers are constantly getting updated with new technology when it comes to performance and fuel consumption. But the interior in the cockpit has not been exposed to any dramatic changes for decades. A modernized cockpit gives the driver a more modern feel of driving a highly technological machine, while at the same time enables for personalization. This thesis work presents a new way of improving the look and feel for displaying relevant information and also relaying information to both the driver of the machine and spectators outside. It includes a way of rerouting CAN-bus signals from a construction machine and displaying it on a tablet. The core idea with the solution is to make it as modular as possible to further improve and be able to use it in any machine available at Volvo's disposal. With this in mind, any machine could use the same software, the same hardware and still be able to fully utilize all the features that have been implemented from the thesis work. The idea and implementational results are designed as partly embedded and partly towards user interface.

Les systèmes embarqués complexes (avions, satellites, drones...) contiennent de plus en plus de calculateurs. Désormais ce sont des dizaines voire des centaines de calculateurs qui communiquent à travers un réseau partagé. Une fonction est réalisée par la collaboration d'un ensemble de calculateurs qui s'échangent un nombre croissant d'informations. Dans un contexte de temps réel embarqué, il faut non seulement garantir que ces informations échangées sont correctes mais il faut aussi garantir qu'elles vérifient leurs contraintes temporelles. Du point de vue du réseau cela signifie qu'une information doit être échangée en respectant les délais qui lui sont imposés. Ceci implique de pouvoir borner le temps de traversée du réseau de chaque message afin de vérifier qu'il arrive dans les temps. Or les systèmes embarqués étant de plus en plus complexes et le nombre d'informations échangées étant en constante augmentation, cette borne est de plus en plus difficile à calculer. De plus il est important que cette borne soit le moins pessimiste possible afin d'éviter que le système soit surdimensionné. L'objectif de ce travail est de mettre en place un modèle capable de calculer ces bornes.Afin d'y parvenir nous nous sommes basés sur la méthode d'analyse du Calcul Réseau.Ce travail s'est en particulier attardé sur la modélisation des interactions qui existent entre les messages synchrones et les messages asynchrones. Les modèles présentés dans ce manuscrit prennent en compte les dates d'émission sur le réseau des messages synchrones lors du calcul des bornes supérieures de temps de traversée des messages asynchrones.Les principales contributions apportées par ce manuscrit sont :1. la présentation d'une nouvelle façon d'envisager l'utilisation des dates d'émission sur le bus CAN : la synchronisation faible.Ainsi que la modélisation complète d'un tel système et enfin l'évaluation du gain apporté par cette solution.2. une modélisation complète du réseau TTEthernet permettant d'évaluer finement l'impact des flux synchrones sur le tempsde traversée des flux asynchrones.3. une présentation de l'utilisation de la synchronisation dans le réseau TSN ainsi qu'un modèlecomplet permettant d'analyser cette nouvelle technologie. / Complex embedded systems (planes, satellites, drones ...) contain more and more calculators. From now on, these are tens or even hundreds of calculators that communicate through a shared network. A function is achieved by the collaboration of a set of devices that exchange a growing number of information. In an embedded real-time context, it must be ensured that these informations exchanged are correct but it must also be ensured that they verify their temporal constraints. From the network point of view, this means that informations must be exchanged respecting their deadlines. This implies being able to upper bound the traversal time of the network of each message in order to verify that it arrives in time. However, as embedded systems are more and more complex and as the amount of information exchanged is constantly increasing, this bound is increasingly difficult to compute. Furthermore, it is important that this upper bound to be the least pessimistic possible to avoid an oversized system.The goal of this work is to develop new methods of analysis in order to be able to compute these bounds.In order to achieve this, we used the Network Calculus method of analysis.This work focuses on the modeling of interactions between synchronous messages and asynchronous messages.The models presented in this work take into account the transmission dates on the network of synchronous messageswhen calculating the upper bounds of traversal time of the asynchronous messages.The main contributions are:1. the presentation of a new way of considering the use of the dates of emission on the CAN bus: the weak synchronization.As well as the complete modeling of such a system and finally the evaluation of the gain provided by this solution.2. a complete modeling of the TTEthernet network allowing to evaluate the impact of the synchronous flows on the traversal time of the asynchronous flows.3. a presentation of the use of synchronization in the TSN network and a complete model for analyzing this new technology.