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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
61

Säkerhet i CAN-bussen : Riskerna som medföljer Internet of Vehicles

Lindmark, Anton, Hall, Fredrik January 2017 (has links)
I denna rapport undersöks säkerheten i de inbyggda systemen i ett fordon. Är CAN-bussen och enheterna som kommunicerar med den verkligen säkra? Vilka svagheter finns det inom säkerheten när ny teknik implementeras i fordon och ansluts till CAN-bussen?Om ett fordon blir angripet så är riskerna att angriparen lyckas med attacken ganska stora. Speciellt så finns det flera risker och säkerhetshål med ny teknik t.ex. inbyggda mediasystem i fordon.Vi har forskat i hur lätt det är att hämta information ur fordonet, samt vad som kan göras med denna information, detta med hjälp av både andra vetenskapliga rapporter samt en fysisk undersökning med hjälp av en applikation som utvecklades.Genom avläsning med hjälp av Bluetooth från OBD2 kontakten så kan information såsom signaler för att låsa upp fordonet eller trycka på gasen läsas av från fordonet. Viss information är dold för den normala användaren, såsom ett tryck på gaspedalen. Denna information måste erhållas genom exempelvis avläsning av dolda paket. Detta kan göras genom att spåra paket med hjälp av diverse program, t.ex. Wireshark. Hade denna information varit enkel att tillgå så kan den användas på ett skadligt sätt. Skulle exempelvis kommandot för att trycka på gasen kunna styras trådlöst så skulle detta kunna skapa stora och farliga problem. Detta är något som undersöks i rapporten, hur man kan gå tillväga och vilka sätt ett fordon kan angripas på.En applikation utvecklades för att undersöka vilken information som kan relativt enkelt extraheras. Parametrar som t.ex. hastighet eller varvtal på motorn är exempel på denna information. Med hjälp av en OBD2 enhet så kommunicerar applikationen med fordonet. Applikationen hämtar ut informationen om en bilresa från start till stopp för att sedan kunna redovisa denna information. Information visas till användaren i applikationen både under tiden fordonet färdas och sedan en sammanfattning av hela resan. Applikationen kan användas för att spara sina resor om man till exempel vill redovisa tjänsteresor för sin arbetsgivare. Resorna sparas både i databas och lokalt på din telefon med möjlighet för uppladdning till en webbserver eller liknande.iiApplikationen sparar all information du valt om din resa och kan även skräddarsys med mer eller mindre parametrar beroende på behov.Den har även ett användningsområde för att övervaka sitt körande, om man till exempel någon gång under resans gång uppnår onormala värden, som t.ex. alldeles för höga varvtal eller liknande. / In this report, the security in integrated systems within vehicles is evaluated. Is the CAN bus and the devices that communicate with it secure? What are the weaknesses in security when modern technologies are implemented in vehicles and connected to the CAN bus?If a vehicle is attacked, the risk of the attacker's success with the attack is quite large. There are several risks and security holes with modern technology, for example. built-in media system in vehicles.We have researched how easy it is to retrieve information from the vehicle and what can be done with this information, using both other scientific reports and a physical examination using an application that were developed.By reading using Bluetooth from the OBD2 connector, information such as signals to unlock the vehicle or press the gas pedal can be read from the vehicle. Certain information is hidden for the normal user, such as a press of the gas pedal. This information must be obtained by for example, reading hidden packages. This can be done by tracing packages through various applications, such as Wireshark. Had this information been easy to access, it could be used in a malicious way. Should the command to press the gas be controlled wirelessly, this could create major and dangerous problems. This is something that is being investigated in the report, how to proceed and what ways a vehicle can be attacked.An application was developed to investigate what information that can be relatively easily extracted. Parameters such as speed or rounds per minute on the engine are examples of this information. Using an OBD2 device, the application communicates with the vehicle. The application retrieves information about a trip from start to stop and then it’s able to report this information. Information is displayed to the user in the application both while the vehicle is traveling and then a summary of the entire trip. The application can be used to save one’s journey, if for example, you want to report your trips to your employer. The trips are stored both in a database and locally on your phone with the possibility of uploading to a web server.ivThe application saves all information you selected about your trip and can also be customized with parameters depending on your needs. It also has a field of use for monitoring your driving, for example if you at some time during the trip reach abnormal values, such as far too high rounds per minute or something similar.
62

The Eco-Smart Can

Nanto, Darack B 12 April 2019 (has links)
I noticed that the workers had the same itinerary when emptying trashcans, meanwhile trashcans needed urgently to be emptied. Traditionally, ETSU maintenance operate on daily routes to pick trash on designated time, regardless the level of the containers. This leads to overflown trashcan in busy areas or during rush hours in certain areas. This overflown trashcan result in an unclean environment for the community and an unpleasant look of our beautiful campus. The time, resources and labor invested in collecting the trash could be saved. Therefore, I decided to use the Internet of Things (IoT) to create a device that will optimize trash collection, to reduce costs and pollution. The Eco-Smart Can will contain a renewable source of energy such as the solar panel. Furthermore, it will have a compactor as well to decrease the trash volume. The system in the Eco-Smart can will give prior information of the trash level to maintenance facility so that they can empty the trash in a timely manner and preserve the environment.
63

Polohová regulace motoru pomocí 8bit uP / Positional Motion Control by means of 8bit uP

Janda, Petr January 2010 (has links)
This thesis deals with positional control of DC motor Icla D065 of company SIG Positec Automation GmbH with aid of CAN-Bus and CANopen protocol. Individual parts describe general principle and standards of CAN-Bus and international normalized higher-level protocol CANopen for systems control. For control this motor was used microcontroller PIC18F4685 from company Microchip and developmental environment MPLAB® IDE. With used C language was made program for MCU control communication with a motor by support of CANopen protocol and its motion control. The result of this thesis will be used in solution of research project Intelligent Systems in Automation.
64

Design av testmiljö för verifiering av elektroniska styrenheter

Hellquist, Markus, Hagblom, Sebastian January 2020 (has links)
Examensarbetet syftar till att undersöka möjligheten att expandera befintlig testprocess av elektroniska styrenheter. Hos Volvo Construction Equipment sker verifiering av styrenheter till stor del i riggar som består av större CAN-nätverk och innehåller många komponenter. Antalet riggar begränsas av att de är kostsamma, vilket i sin tur leder till att antalet tester som kan genomföras är begränsat. Målet med arbetet är att undersöka om det är möjligt att skapa en testmiljö som verifierar funktionalitet i en styrenhet, separerad från övriga delar av nätverket. Planen är att testmiljön ska kunna användas som komplement till de befintliga riggarna. Arbetet visar att det är möjligt genom att implementera en testmiljö som kan verifiera funktionalitet hos en separerad styrenhet. Testmiljön ger Volvo möjlighet att utföra fler tester och därmed expandera deras testprocess av elektroniska styrenheter. / The thesis aims to examine the possibility of expanding the existing test process of Electronic Control Units. At Volvo Construction Equipment, verification of control units is mostly done in rigs that include large CAN-networks and contains multiple components. The number of rigs available is limited by their cost, which leads to a limited number of tests that can be made. The thesis is investigating whether it is possible to create a test environment that verifies functionality of an Electronic Control Unit, separated from the network. The purpose of the test environment is to be used as a complement to the existing rigs. The thesis shows that it is possible by implementing a test environment that can verify functionality of a separated control unit. This test environment allows Volvo to perform more tests and thereby expand their test process of Electronic Control Units.
65

The Eco-Smart Can

Nanto, Darack B 12 April 2019 (has links)
I noticed that the workers had the same itinerary when emptying trashcans, meanwhile trashcans needed urgently to be emptied. Traditionally, ETSU maintenance operate on daily routes to pick trash on designated time, regardless the level of the containers. This leads to overflown trashcan in busy areas or during rush hours in certain areas. This overflown trashcan result in an unclean environment for the community and an unpleasant look of our beautiful campus. The time, resources and labor invested in collecting the trash could be saved. Therefore, I decided to use the Internet of Things (IoT) to create a device that will optimize trash collection, to reduce costs and pollution. The Eco-Smart Can will contain a renewable source of energy such as the solar panel. Furthermore, it will have a compactor as well to decrease the trash volume. The system in the Eco-Smart can will give prior information of the trash level to maintenance facility so that they can empty the trash in a timely manner and preserve the environment.
66

CRC-kódy / CRC-codes

Lorenc, Filip January 2021 (has links)
This thesis deals with description of CRC codes, which is a type of polynomial error correction codes, and description of CAN and CAN FD protocols used in automobiles for data transmission between sensors. One of the security elements is usage of the CRC codes with the Hamming distance 6. Unfortunately, both protocols contain a design vulnerability which causes that some received messages with one wrong bit do not have to be detected by the protocol. The aim of the thesis was to describe this vulnerability and found out, if it was possible to eliminate it by using different CRC code. It managed to characterize all messages, which are not during this vulnerability detected by CRC code and based on that it was possible to prove, that the probability of error does not depend on a CRC code choice of a fixed length. 1
67

DESIGN OF A CAN-TO-USB CONVERTER WITHARM-CORTEX STM32MICROCONTROLLER / Design av en CAN-till-USB konverterare med ARM-Cortex STM32 Mikrokontroller

Eriksson, Jonathan January 2023 (has links)
This thesis presents the development of a prototype that enables conversion between the CAN J1939 and USB interfaces, encompassing both hardware and software targeted for the STM32F412ZG embedded microcontroller. The software development process involves using the HAL API and implementing the interfaces with code partially generated by the initialization code generator STM32CubeMX. The prototype collects data from messages exchanged from a connected CAN slave, transmitting converted data over USB in the form of Human Interface Device (HID) reports. The microcontroller and its interfaces are used to map data received to their respective data structures and establish connectivity for both data buses. The data structure for HID devices is described by the HID report descriptor, a hard-coded array of bytes describing data packets exchanged between the device and host. The connected CAN device is the Safety Cabin Module connected to a physical controller and features a total of 8 analog and 32 digital inputs. When connected to a USB host, CAN data received on the microcontroller is converted to the data structure defined by the report descriptor and sent to the host as HID reports. The USB Device operates as a multi-axis joystick with 32 digital buttons on a connected Windows PC. / I detta arbete utvecklas en prototyp för att konvertera data som skickas mellan gränssnitten CANJ1939 och USB. Prototypen består av fysisk hårdvara samt mjukvara skriven för mikrokontrollern STM32F412ZG, med delvis generad kod och åtkomst till HAL API med hjälp av programmet STM32CubeMX. Prototypen agerar som en USB-enhet som konvererar CAN J1939 meddelanden och överför dem via USB i form av Human Interface Device (HID) reports, genom användning av mikrokontrollern omvandlas de olika databussarna till dess motsvarande datastruktur. Den datastrukturen för HID reports har benämningen report descriptor, vilket är en hårdkodad array som beskriver de data-paket som skickas mellan en enhet och host. Det använda gränssnittet för CAN produkten är Safety Cabin Module (SCM) vilket har konfigurerats till en fysisk handkontroll med 8 analoga och 32 digitala ingångar, den data som skickasfrån handkontrollen konverteras om till en datastruktur i enlighet med en utvald report descriptor. Efter anslutning till en dator kan handkontrollen användas som en joystick med flertal axlar och 32 knappar.
68

Telemetry System Architecture for a Solar Car

Walter, Eric, Glover, Nicholas, Cureton, Jesse, Kosbar, Kurt 10 1900 (has links)
ITC/USA 2015 Conference Proceedings / The Fifty-First Annual International Telemetering Conference and Technical Exhibition / October 26-29, 2015 / Bally's Hotel & Convention Center, Las Vegas, NV / This paper discusses the telemetry system used to monitor the performance of a solar-powered vehicle during testing and competitions. Car-side systems collect and transmit data onboard over an ISO 11898 / CAN bus. A bridge then converts this data into TCP/IP packets, which are transmitted via Ethernet to a Wi-Fi access point. The data is distributed through an IEEE 802.11N 5GHz mesh network to provide real time data to remote computers running telemetry software. This software displays and logs data from the car, allowing team members to monitor the vehicle.
69

Garbage Can Decision-Making in a Matrix Structure : A Case Study of Linköping University

Delgoshaei, Bahareh, Fatahi, Masoud January 2013 (has links)
Background: A university is characterized as organized anarchy. According to Cohen, et al. (1972) decision-making occurs in form of A Garbage Can Model (GCM) in such organizations. This model is influenced by some factors such as organizational structure. The influences of some types of organizational structure have been studied based on a computer simulation by Cohen and his colleagues in 1972. However, the study was based on numerical statistics and excluded the influence of genuine characteristics of an organizational structure. Aim: This thesis aims to understand the influence of the dynamic and real characteristics of an organizational structure on a university’s decision-making process. Therefore, this research is conducted to explore how matrix structure influences on decision-making process in Linköping University by reducing uncertainty characteristics of decision-making process. Definitions: A Garbage Can Model: provides a theory framework in order to understand how decisions are made in organizations under condition of organized anarchy. This Model has four heterogeneous streams include decision, solution, decision maker, and choice opportunity. All these streams are moving around within the organization and need to match up in the choice opportunities to make decisions. Matrix Structure: is a structure with focus on multiple dimensions through multiple lines of authority and lateral communication. Results: The Matrix structure reduces the uncertainty of decision-making in Linköping University by managing the information process through the lateral communication. More specifically, the lateral communication occurs based on different approaches such as informal meetings, network of people, management group, and external information. However, the authority aspect in Linköping University has certain tendency towards the single unity of command (centralization), which is in contrast with matrix structure characteristics.
70

Comunicação de tempo-real em barramentos CAN baseados no controlador SJA1000 : análise e implementação de uma solução para o escalonamento de mensagens

Pires, António Júlio Morais January 2005 (has links)
Tese de mestrado. Engenharia Electrotécnica e de Computadores. 2005. Faculdade de Engenharia. Universidade do Porto

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