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Al, Hayani Musab. "Modeling Bus Load on CAN." Thesis, Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-19140.
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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.
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Yang, Yang. "CAN bus Data Stream Wrapper." Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-321608.
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A data stream management system (DSMS) is similar to a database system with the difference that a DSMS can search data directly in on-line streams as well as querying stored data, while a DBMS can search only stored data. Stream queries are called continuous queries because they run all the time until they are terminated. SCSQ is an extensible DSMS allowing different kinds of data sources to be integrated and queried. A SCSQ interface to a data stream system is called a datastream wrapper. A datastream wrapper allows continuous queries to be specified over an external datastream producing system. The Controller Area Network bus (CAN bus), is astandard for interfacing data streams from different kinds of equipment and engines,such as wheel loaders and other vehicles. The objective of the project is to developan interface, called a CAN bus data stream wrapper, to enable SCSQ to access to streams of sensor readings from industrial equipment through CAN bus standard interfaces. It enables the SCSQ user to specify continuous queries over equipmentdata streams.
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Pettersson, Marcus. "CAN bus diagnostic tool for PocketPC." Thesis, University West, Department of Technology, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-340.
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Arapantonis, Elpidoforos. "Data tampering in Vehicle CAN Bus networks." Thesis, Luleå tekniska universitet, Institutionen för system- och rymdteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-76776.
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The paradigm of the automotive industry has changed, over the course of the last10-15 years. Electronics and software, have introduced in many dierents parts ofa vehicle and the drive-by-wire it is taking over the vehicle functions. Connectivityfunctionalities are increasing in the context of the automotive industry as well. Allthe aforementioned parts have more than one common link. This thesis project willfocus on one of these links, which is the security. The focus will be the CAN busprotocol and specically, on investigating the implications of an adversary havingphysical access in a vehicle. An experiment will be contucted as part of this thesiswork, by using open source hardware (Arduino and Raspberry Pi) and a Man-inthe-middle (MITM) attack scenario, will be implemented. The application, whichwill perform the MITM attack (small scale CAN bus fuzzer) will be developedduring this project and it will be distributed as an open source software afterwards.
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Sun, Bo, and Shih-Ting Huang. "AUTOSAR Acceptance Test of Communication on CAN bus." Thesis, Linköpings universitet, Institutionen för datavetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-143297.
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The aim of this thesis is to build a framework based on the CAN bus and to create the auto-run scripts followed by the AUTOSAR Acceptance Test for Arctic Core and Arctic Studio, the products from ARCCORE AB. Subsequent to this, the UART driver between the test bench and the application layer has been implemented. In total, 11 test cases are configured with the application layer, the run time environment (RTE) layer and the basic software (BSW) layer. Thus, the test bench of each test case is also implemented. The result shows that 82.7% test cases are passed and the CANTP module and the LDCOM module are found not supported in the Arctic studio.
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Uhlin, Jakob. "CAN signal quality analysis and development of the signal processing on a FPGA." Thesis, Linköpings universitet, Fysik och elektroteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-108366.
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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.
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Wörn, Michael. "Spezifikation einer Steuerungssoftware für eine CAN-Bus gesteuerte Kraftfahrzeugtüre in SDL." [S.l.] : Universität Stuttgart , Fakultät Informatik, 1998. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB6783611.
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Olsson, Patrik, and Erik Blomberg. "Programmering, dokumentering och driftsättning av CAN-bus baserat styrsystem." Thesis, University of Gävle, Department of Technology and Built Environment, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-216.
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<p>SRG Carrier Systems AB har tagit fram en ny maskin MPM 160 där MPM står för Multi Purpose Machine. Den är en typ av redskapsbärare i storleken av en skogmaskin som beroende på vad den utrustas med kan fungera som i princip vad som helst. Hytten på denna maskin skall om så önskas alltid kunna stå horisontellt. Detta skall kunna ske automatiskt eller manuellt och tiltningen sker med hjälp av sex stycken hydraulcylindrar.</p><p>Arbetet i denna rapport avser skapandet av det automatiska systemet. Styrsystemet har skapats i mjukvaran CANmaster från Hydratronics AB. För att veta hur mycket hytten lutar har en inklinometer, vilket är en lutningsgivare, valts och för att veta när maxlägen för lutningkompenseringen nåtts har induktiva givare valts. Styrsystemet implementerades sedan på maskinen.</p><br><p>SRG Carrier Systems AB has developed a new machine MPM 160, MPM is short for Multi Purpose Machine. It is a kind of toolcarrier with the size of a forrestmachine that depending on what it is equipped with can be used as allmost anything. The cabin on this machine can always remain in horizontal position, if so is preferred. This can be done either automatically or manually and the nivellation is made by six hydaulic cylinders.</p><p>The work in this report concerns the creation of the automatic system. The control system has been created in the software CANmaster developed by Hydratronics AB. To know the degree of tilt of the cabin an inclinometer has been chosen and to detect when the compensation of tilt has reached a maximum inductive sensors has been chosen. The control system is then applied on the machine.</p>
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Patel, Chitvan Kirit. "Intrusion Detection using Bit Timing Characteristics for CAN Bus." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/91902.
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In today's world, most automobiles use Controller Area Network (CAN) bus for communication between various Electronic Control Units (ECUs), also called nodes on the CAN bus. Each ECU on the CAN bus is a microcontroller that sends a unique identifier used for node identification. It is possible to spoof node A by sending the same identifier through node B and thereby control node A. Thus, a hacker can control the steering using the car's internal lights and render it ineffective or misuse them. In order to combat this, we try to fingerprint each node by identifying its identifier's unique bit timing characteristics. To that extent, bit timing characteristics used are the Time of Flight (TOF) intervals between successive rising edges of identifier bits, for an ECU. Similarly, other characteristics such as TOF between successive falling edges of the CAN bus node identifier can also be used for node classification.
In order to measure these TOFs, we use a device called Time-to-Digital Convertor, which essentially triggers a ring oscillator to measure time values between rising/falling edges of a signal, to the order of picosecond accuracy. These timing values are used as features into the K-nearest neighbors (KNN) classifier algorithm. Once the classifier is trained, it can be used to predict a new timing value into a particular node category, which if different from the expected category is a sign of compromise or intrusion. It is seen that we achieve 95% accuracy of correctly predicting the compromised node under simulation tests. Thereafter, the thesis deals with experimentally predicting an intrusion in the CAN bus system utilizing EPOS Studio CAN bus position controller for Maxon motors. The clock timings being extremely accurate leads to the conclusion that employment of better statistical techniques for node characterization is needed for intrusion detection, which is outside the scope of this work.<br>Master of Science<br>In today’s world, most automobiles use Controller Area Network (CAN) bus for communication between various Electronic Control Units (ECUs), also called nodes on the CAN bus. These nodes can range from car headlights, radio, doors, internal lights to brakes, steering, throttle and much more. Each node on the CAN bus is a microcontroller which controls its proper operation. This also means that if a node is compromised using external hardware or a piece of software, it could be quite risky. Thus, a hacker can control the steering using the car’s internal lights and render it ineffective or misuse them. In order to combat this, we try to fingerprint each node by identifying its unique time domain characteristics. These characteristics can be the Time of Flight (TOF) measurement values between successive rising or falling edges of a node’s unique identifier, using an instrument called a Time-to-Digital convertor. Furthermore, these TOF values are used as features for the K-nearest neighbor (KNN) classifier machine learning algorithm, which uniquely identifies signals coming from any of the fingerprinted nodes, thereby raising a flag if a message comes from an unidentified node. In addition, experimental data is obtained for node identifiers on the CAN bus, in digital form, and passed into a neural network (NN) for training the classifier. We achieve an 95% and 70% prediction accuracy for the KNN and NN classifiers respectively.
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Viklander, Johan. "Simulation of a TCU Node on a Virtual CAN Bus." Thesis, Umeå universitet, Institutionen för fysik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-119477.
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Electrical Control Units (ECUs) communicating on Controller Area Networks (CAN buses) are widely used in vehicle electrical systems. Being able to simulate these circuits and buses in a computer environment is beneficial during the development phase when access to test benches is limited and expensive. Simulations can also give a very detailed view of the entire system which in an ordinary lab setup would be practically impossible. BAE Systems Örnsköldsvik SIL Lab department works in the simulation environment CANoe supplied by Vector Informatik GmbH. BAE Systems have a simulation model of their central communication circuit. Unlike the less complicated circuits on the bus it cannot be integrated in the CANoe simulation environment. The less complicated nodes are modelled to usable extent but this is not possible with the central communication circuit. This report presents a possible solution to facilitate communication between the simulated ECU and the CANoe simulation environment under certain real-time constraints. A solution was achieved with a combination of an external program which handled shared memory with callback functions and Vector's Fast Data eXchange protocol (FDX).
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Andersson, Gustav. "Translation of CAN Bus XML Messages to C Source Code." Thesis, Linnéuniversitetet, Institutionen för datavetenskap och medieteknik (DM), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-96424.
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The concept of translating source code into other target programming languages is extensively used in a wide area of applications. Danfoss Power Solutions AB, a company located in Älmhult, strives to streamline their way of software development for microcontrollers by implementing this idea. Their proprietary software tool PLUS+1 GUIDE is based on the CAN bus communication network, which allows electronic control units to share data represented in the XML format. Due to compatibility problems, the application in the electronic control units requires this data to be translated into the source code in the low-level C programming language. This thesis project proposes an approach for facilitating this task by implementing a source-to-source compiler that performs the translation with a reduced level of manual user involvement. A literature review was conducted in order to find the existing solutions relevant to our project task. An analysis of the provided XML input files was thereafter performed to clarify a software design suitable for the problem. By using a general XML parser, a solution was then constructed. The implementation resulted in a fully functional source-to-source compiler, producing the generated C code within a time range of 73–85 milliseconds for the input test files of typical size. The feedback received from the domain experts at Danfoss confirms the usability of the proposed solution.
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Nolte, Marco. "Entwicklung eines CAN-Bus-Adapters für spezielle Anforderungen zur Fahrzeuganbindung." Bremen Europ. Hochsch.-Verl, 2009. http://d-nb.info/996363149/04.
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Drahovský, Peter. "Vzdálené monitorování vybraných subsystémů vozidla." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2021. http://www.nusl.cz/ntk/nusl-445548.
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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.
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Papoušek, Marek. "Systém domácí automatizace." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-221023.
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The work deals with a design and realization of the comprehensive system of home automation. Individual elements of the system communicate utilizing CAN bus. Home automation system should provide lighting, heating and security management. The system should be controlled by tablets with android operating system utilizing developed control software. Microcomputer Raspberry Pi is used to control the automation system.
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Sanchez, Juan Sebastiam. "Connected Vehicles: from CAN bus to IP-based In-Vehicle Networks." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/20415/.
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Il settore automotive, negli ultimi vent’anni, è stato oggetto di importanti sviluppi tecnologici, caratterizzati principalmente dall’evoluzione dei settori dell’elettronica e delle telecomunicazioni.
Questo elaborato si pone come obiettivo lo studio delle tecnologie che hanno permesso l’introduzione di sistemi elettronici avanzati all’interno dei veicoli, e di come queste si siano evolute negli anni.
Vengono quindi presentate le moderne idee di Connected Vehicle e di In-Vehicle Networks (IVN), nonché i principali protocolli di comunicazione che ne hanno caratterizzato l’evoluzione. Si procede poi analizzando il Controller Area Network (CAN bus), le reti veicolari IP-based ed infine il dispositivo che permette l’implementazione di reti eterogenee, l’Automotive Gateway.
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Hedröd, Fredrik. "Interfacemodul för kommunikation mellan CAN-bus och USB/PS2 eller RS232." Thesis, University West, Department of Technology, Mathematics and Computer Science, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-373.
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<p>På uppdrag av innovationsföretaget EmpirBus AB skulle en produkt utvecklas. Projektet innefattade utvecklingsprocessen ända ifrån ide till slutprodukt. Syftet var att utveckla ett gränssnitt för kommunikation mellan CAN-bus och USB/PS2 eller RS232. Gränssnittet sammankopplas med ett CAN-bussbaserat elsystem för marina installationer. Produktens uppgift var att utföra bildskärmsväxlingar på informationsskärmar ombord på fartyg. Genom att sända ett kommando till en bildskärmsväxel innehållande information om till vilken bild som skall växlas fram. Projektet gick enligt plan och en färdig produkt blev slutresultatet, benämnd UPS-B Ver. 1.0.</p>
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Wolfram, Ted. "Bridging two CAN-bus segments using radio communication with the IEEE 802.15.4 protocol." Thesis, Jönköping University, JTH, Computer and Electrical Engineering, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-622.
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<p>This thesis will investigate the possibilities to wireless communicate within time critical applications with the radio protocol IEEE 802.15.4.</p><p>IEEE 802.15.4 is a very quick protocol so the delays and jitter can be ignored in a small network.</p><p>The thesis handles the question: Is it possible to split a CAN-bus and send the data via radio to the other side of the CAN-bus?</p><p>The big problems with this are:</p><p>• Will it be treated like a transparent link and not disturb the original functionality?</p><p>• How does a system which is split up by radio treat new nodes on the bus?</p><p>• What will be the maximum speed and the maximum utilization factor for the split up bus?</p><p>• What new suitable protocols can be implemented on a higher level to get the split bus to work?</p><p>This is modeled and discussed, real measurement from a radio link is used in the model to see if it’s possible.</p><p>The radio communication will satisfy the demands from the company regarding their application. With an efficient error handling and a smart transmission protocol the application can be a very smart way of sending CAN-data via radio.</p><br><p>Denna rapport undersöker möjligheterna med att kommunicera trådlöst i</p><p>tidskritiska applikationer med hjälp av radioprotokollet IEEE 802.15.4.</p><p>IEEE 802.15.4 är ett väldigt snabbt protokoll så jitter och fördröjningen i sändningarna kan försummas för så små nätverk som tas upp i denna uppsats.</p><p>Går det att bryta en CAN-buss och koppla in denna radiolänk så att den</p><p>uppfattas som transparent?</p><p>Många problem kommer att dyka upp om detta görs, några av dem är dessa:</p><p>• Hur behandlar ett system nya noder som kopplas in om CAN-bussen är uppdelad?</p><p>• Vilken är den maximala hastigheten och utnyttjandefaktor som kan uppnås av den delade CAN-bussen?</p><p>• Måste ett överliggande protokoll användas för att sköta om datatrafiken mellan bussarna?</p><p>Detta modelleras och diskuteras efter det att de uppmätta mätvärdena har samlats in och analyserats.</p><p>Det som framkom var att det fungerar väldigt bra, data kommer fram i tid och felen i radiosändningarna är väldigt små. Med en väl genomtänkt felhantering och ett likaså genomtänkt omsändningsprotokoll kommer detta att fungera väldigt bra beroende på avstånd och antennval.</p>
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Rockström, Ivar. "Simulation of road slope with brake applications on horizontal ground." Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-79867.
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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.
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Kabelka, Michal. "Aplikace pro sběr a vyhodnocení dat z rozhraní OBDII pro Android." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2015. http://www.nusl.cz/ntk/nusl-264944.
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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.
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Hegde, Bharatkumar. "Modeling of Vehicle Controller Area Network for Control Systems Simulation." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1406113558.
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Del, Zozzo Dario. "Realizzazione di una applicazione Android di comunicazione tra smartphone e CAN-bus." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/14893/.
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La tesi tratta il funzionamento e l'implementazione dell'applicazione OBD Assistente Auto realizzata per instaurare una comunicazione con la centralina (ECU) dell'auto tramite porta OBD-II.
Attraverso questa comunicazione è possibile ricevere dati diagnostici dalla ECU ed effettuare stime su consumi, diagnosi del motore e controllo degli errori cruscotto della spia "MIL".
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Shivam, Satyesh. "Development of a Calibration Tool using CCP and XCP on CAN Bus." Master's thesis, Universitätsbibliothek Chemnitz, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-216041.
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Testing of the Electronic Control Unit is a very important step before delivering the software to customer. Due to increasing complexity in the requirements and the timing constraints, it is needed that the testing should be proper and on time. To meet the timing constraints it is needed to automate the entire process of testing. Although the current testing tool support the automation process, it is very slow. In this thesis a new tool has been developed which will support calibration using CCP and XCP on CAN bus. Secondly, the tool will also provide the feature of automation, where user can write their own script to test the ECU. This will make the entire process of testing very fast. Finally both the solutions will be compared with respect to time for deducing the final conclusion.
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Hedman, Pontus, and Vasilios Skepetzis. "Intrångsdetektering på CAN bus data : En studie för likvärdig jämförelse av metoder." Thesis, Högskolan i Halmstad, Akademin för informationsteknologi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-42354.
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Utförda hacker-attacker på moderna fordon belyser ett behov av snabb detektering av hot inom denna miljö, särskilt när det förekommer en trend inom denna industri där moderna fordon idag kan klassas som IoT-enheter. Det förekommer kända fall av attacker där en angripare förmår stoppa fordon i drift, eller ta bromsar ur funktion, och detta har påvisats ske fjärrstyrt. Denna studie undersöker detektion av utförda attacker, på en riktig bil, genom studie av CAN bus meddelanden. De två modellerna CUSUM, från området Change Point Detection, och Random Forests, från området maskininlärning, tillämpas på riktig datamängd, för att sedan jämföras på simulerad data sinsemellan. En ny hypotesdefinition introduceras vilket möjliggör att evalueringsmetoden Conditional expected delay kan nyttjas för fallet Random Forests, där resultat förmås jämföras med evalueringsresultat från CUSUM. Conditional expected delay har inte tidigare studerats för metod av maskininlärning. De båda metoderna evalueras också genom ROC-kurva. Sammantaget förmås de båda metoderna jämföras sinsemellan, med varandras etablerade evalueringsmetoder. Denna studie påvisar metod och hypotes för att brygga de två områdena change point detection och maskininlärning, för att evaluera de två enligt gemensamt motiverade parametervärden.<br>There are known hacker attacks which have been conducted on modern vehicles. These attacks illustrates a need for early threat detection in this environment. Development of security systems in this environment is of special interest due to the increasing interconnection of vehicles and their newfound classification as IoT devices. Known attacks, that have even been carried out remotely on modern vehicles, include attacks which allow a perpetrator to stop vehicles, or to disable brake mechanisms. This study examines the detection of attacks carried out on a real vehicle, by studying CAN bus messages. The two methods CUSUM, from the field of Change Point Detection, and Random Forests, from the field of Machine Learning, are both applied to real data, and then later comparably evaluated on simulated data. A new hypothesis defintion is introduced which allows for the evaluation method Conditional expected delay to be used in the case of Random Forests, where results may be compared to evaluation results from CUSUM. Conditional expected delay has not been studied in the machinelarning case before. Both methods are also evaluated by method of ROC curve. The combined hypothesis definition for the two separate fields, allow for a comparison between the two models, in regard to each other's established evaluation methods. This study present a method and hypothesis to bridge the two separate fields of study, change point detection, and machinelearning, to achieve a comparable evaluation between the two.
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Månsson, Andreas. "CAN-bus system for vehicle actuation and data logging with Arrowhead Framework." Thesis, Luleå tekniska universitet, Institutionen för system- och rymdteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-74967.
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The use of micro controllers in automotive application have exploded during the last half century. What was initially a set of mechanical systems that formed a vehicle have now become a collection of computers on wheels. The reason is quite obvious: micro controllers use several inputs to optimize the performance of systems; for example an engine control or an active safety system.The different inputs and outputs to these electronic units (electronic control unit, ECU) are of interest to other such units thereby justifying the need of inter-ECU communications. The Controller Area Network (CAN) bus has been developed to facilitate this communication. It is a message based protocol and is very resilient. It is however relatively slow and limited in terms of security. Security is assured only by trying to keep the message identification tags confidential and the bus physically separated to other network. A couple of decades ago our society embraced the Information Technology (IT) revolution. It allowed people to have extensive access to information. From a technology point of view, IT is based on the use of the Internet, which has been initially designed by the US military for robust applications. It is fast and its security is sufficiently high that we use it to communicate with our banks where we keep all our life savings.The aim of this thesis has been to combine these technologies such that a vehicle with a CAN bus could offer services (just like a bank does) over the Internet. The goal then is to transform a CAN bus to become a service provider over the Internet. The services are the broadcasted CAN messages made available to authorized interested parties and can post information and actuations to the ECUs connected to the CAN bus. A vehicle in that case becomes a cyber physical system. To make this transformation possible, we use the open source Arrowhead Framework, which is based on a Service Oriented Architecture (SOA). The available services are made known via a Service Registry and Orchestration service prosumers. Concretely, the work in this thesis project has been to develop (i.e., to design and implement) a CAN service prosumer that is Arrowhead Framework compliant. It has been successfully tested with another service prosumer, which is an Arrowhead Framework compliant data logger. The driving motivation for the thesis project are construction equipment machines, such as wheel loaders and excavators, which are vehicles with booms or arms. The aspiration is that they not only drive autonomously but also dig autonomously. This ambition shall require large amount of data to be exchanged, something that a CAN bus cannot handle.
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Kohnheiser, Jan. "Synchronní řízení servomotorů po sběrnici CAN." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-220576.
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This master's thesis is focused to engine control by CAN bus. Theoretical part describes industrial control buses, servo-traction engines and their application. There are mentioned principal and basic parameters of common control buses and their comparison. Each engine type is described in side of construction and control requirements. Practical part of of this paper works on servo-engines in metal cutting machine applications.
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Lindmark, Anton, and Fredrik Hall. "Säkerhet i CAN-bussen : Riskerna som medföljer Internet of Vehicles." Thesis, Linnéuniversitetet, Institutionen för datavetenskap (DV), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-68723.
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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.<br>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.
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Rehman, Habib Ur. "Designing and Development of a Data Logging and Monitoring Tool." Master's thesis, Universitätsbibliothek Chemnitz, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-212633.
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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.
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Mangan, S. J. "Development of an intelligent road gradient estimation method using vehicle CAN bus data." Thesis, University of Liverpool, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.406640.
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Johnson, Bruce, and John Smith. "CAN BUS USED FOR DATA ACQUISITION SYSTEM CONTROLS (AUTOMOTIVE SOLUTION FOR AIRCRAFT PROBLEM)." International Foundation for Telemetering, 2005. http://hdl.handle.net/10150/604882.
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ITC/USA 2005 Conference Proceedings / The Forty-First Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2005 / Riviera Hotel & Convention Center, Las Vegas, Nevada<br>This paper discusses using the CAN (Control Area Network) Bus protocol for control and
status of flight test data acquisition systems. The application of the CAN (Control Area
Network) on an F/A-18 aircraft will be discussed in detail.
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Linder, Rickard, and Lars Lagerholm. "Embedded Instrument Panel for Construction Equipment." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-14820.
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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.
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Gebretsadik, Rahel Hadgu. "Statistical Analysis of Driver Behaviour and Eco-Driving model based on CAN bus Data." Thesis, Högskolan i Halmstad, Akademin för informationsteknologi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-28091.
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The objective of this thesis is to analyse driving behaviour and to characterize the effectsof an efficient way of driving, termed eco-driving, that enables the driver to reduce fuelconsumption and CO2emissions.The approach used to assess driving style is a collection of data from a CAN bus of acar equipped with OBD-II (on-board diagnostic) system. The driving experiment wasperformed for nine drivers who drove in a normal way or regular driving style and onedriver was an eco-driver who drove in an economical driving style. The driving routewas approximately 18.7 kms (which took between 25 to 30 minutes) in Halmstad city,Sweden.The drivers are compared using a statistical analysis of the driving parameters such as,speed, accelerator (gas pedal) and brake pressure, which are obtained from CAN busdata. A hierarchical clustering algorithm also used to classify the drivers based on theaverage result of the signals.In the results, a driving difference between the eco-driver and the normal drivers is visi-ble, most of the normal drivers have more or less similar behaviour. The average speed ofthe eco-driver lower than the normal drivers and the accelerator (gas pedal) result is alsoshown less usage by the eco-driver than the normal drivers. On the other hand, the eco-driver has braked more often than the normal drivers, but gently. Nevertheless, differenttraffic conditions during the experiment obstructs comparisons between the drivers.
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"Tutorial del bus CAN." Tesis, Universidad de las Américas Puebla, 2003. http://catarina.udlap.mx/u_dl_a/tales/documentos/lep/cortes_r_ce/.
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Almeida, Pedro Miguel Marinho. "Wireless CAN bus bridge." Master's thesis, 2019. https://hdl.handle.net/10216/121299.
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The CAN Bus network is of extreme importance in electrical mobility, minimizing
cabling and improving reliability in data transfer.
In some specific cases, the driver's cabin and CAN network of interest may be detachable
(e.g. in a trailer). It may be then necessary to connect wirelessly to the CAN traffic
(via Bluetooth or other technology).
It is this dissertation's purpose to design and implement a transceiver pair that can
connect wirelessly two or more physically separated can networks. It is expected the
development of the firmware and possibly hardware that augments the existing AddVolt's
local CAN network to be compatible with said wireless CAN bridge.
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Almeida, Pedro Miguel Marinho. "Wireless CAN bus bridge." Dissertação, 2019. https://hdl.handle.net/10216/121299.
Full textAbstract:
The CAN Bus network is of extreme importance in electrical mobility, minimizing
cabling and improving reliability in data transfer.
In some specific cases, the driver's cabin and CAN network of interest may be detachable
(e.g. in a trailer). It may be then necessary to connect wirelessly to the CAN traffic
(via Bluetooth or other technology).
It is this dissertation's purpose to design and implement a transceiver pair that can
connect wirelessly two or more physically separated can networks. It is expected the
development of the firmware and possibly hardware that augments the existing AddVolt's
local CAN network to be compatible with said wireless CAN bridge.
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Santos, João Francisco Sá. "Can and Ethernet bus sniffer." Master's thesis, 2020. https://hdl.handle.net/10216/132771.
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Santos, João Francisco Sá. "Can and Ethernet bus sniffer." Dissertação, 2020. https://hdl.handle.net/10216/132771.
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Hung, Chuan-Chia, and 洪傳家. "CAN BUS with AES Encrypt." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/2cv754.
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碩士<br>中原大學<br>電子工程研究所<br>106<br>Automobile manufacturers provide more and more advanced driver assistance systems (ADAS) to improve the safety and comfort for driving in recent years. The ADAS is composed of the electronic control units and needs to exchange the information with other devices in the vehicle. Considering the speed and importance of the vehicular data, the manufacturers need to segment several different in-vehicle network systems to use. Controller Area Network (CAN) is the mainstream of in-vehicle network because of its low cost, good instantaneity, and the transmitted speed can meet the most requirements of cars. However, the CAN network is closed, there is no consideration of information security. The cars recently access internets through some wireless network methods. The closed CAN network is easy to break through with some network ports. In this dissertation, we encrypt data and protect the communication channels with CAN.
NUC140 evaluation board from Nuvoton™ is used to build the information security by the Advanced Encryption Standard (AES). We design a random number generator to get one of multiple keys and generate the encryption data. It can work and improve the security information. Then ciphertext has been split into 8 bytes and broadcasts via CAN bus network. If we do not know the generation rules and recode full data in the transmitted channel, it is not easy hacked. AES functions are implemented on the board. The users can adopt the random generated rules to determine the keys and encrypt data on the developed board.
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Martins, João Luís Carvalho. "User Interface Display with CAN bus communication." Master's thesis, 2022. https://hdl.handle.net/10216/140655.
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Chen, Hou-Hsuan, and 陳厚亘. "Study of CAN Bus Application for Electric Vehicles." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/tfm8yc.
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碩士<br>國立臺北科技大學<br>車輛工程系所<br>100<br>The purpose of this study is to establish a communicate control system for electric vehicles based on two control systems. In order to reduce the hardware complexity and costs, the main control system connect directly to other hardware devices. For example, lights, brushless DC motor and temperature sensor. Only a few devices such as battery management system is connected through Controller Area Network Bus protocol to the main control system. In this way, other hardware devices can be connect easily through CAN Bus protocol, and the important information in the vehicle system can be shown through special detection equipment in the future, which will take advantages of the inspectors for inspection or maintenance. In the system experimental platform, Microchip’s microcontroller dsPIC30F4011 is utilized for both control systems to complete the system integrated, and utilize the UART module with RS-232 protocol to transmit data to the Human-Machine Interface in order to facilitate supervisory or diagnosis. In the Human-Machine Interface, Microsoft Visual Basic 6.0 is utilized for a display interface in this study, which can detect battery voltage, temperature, wheel speed and some important information in real-time displaying including light signal control or motor cruise control to achieve the purposes of system integration. Finally, the Human-Machine Interface will generate a table in Microsoft Excel, including driving distance, driving time, chart of speed and battery status which can determine the battery life and the vehicle information easily in the future.
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Ku, Yun-Sheng, and 古昀生. "CAN Bus Implementation of Active Noise Control System." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/63732819313591762452.
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碩士<br>大葉大學<br>機電自動化研究所碩士班<br>92<br>This report describes the design of a vehicular controller area network (CAN) bus system with an application in active noise control for engine exhaust system. The work includes two parts: the first part is design with implementation of a CAN bus platform system; the second is an application of active noise control (ANC) in an engine exhaust system that is setting on the proposed CAN bus platform. The proposed ANC is based on the adaptive control algorithm with engine revolution reference. Most of the conventional methods for ANC are based primarily on an adaptive filter with the least-mean-square (LMS) error algorithm. Unfortunately, convergence speed is often limited when a sound source or a filtering plant is varied, because the learning process of the adaptive algorithm fails to respond quickly to the changing operational conditions. In this study, a variable step-size affine-projection algorithm (VSS-APA) is proposed. The proposed VSS-APA filtering algorithm is a combination of the variable step-size convergence algorithm and affine-projection algorithm (APA). The controller is implemented on the proposed CAN bus system. Experiments are carried out to evaluate the noise attenuation performance in various engine speeds. The experimental results indicated that the ANC system achieved the noise attenuation in an engine exhaust system by using the proposed CAN bus system.
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Zhang, Zhao-Lun, and 張肇倫. "An Automotive Entertainment System Based on CAN Bus." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/18502505401559688946.
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碩士<br>清雲科技大學<br>電子工程系所<br>97<br>The main point of this thesis is to introduce a multiple-function Embedded Automotive Entertainment System that uses the Controller Area Network Bus, CAN bus, a
Communication-Protocol as a basis.
The system includes the functions of Audio-Visual Entertainment, Variety Automotive Data Communications, Traffic GPS and GSM Service, and etc…
In addition to the Intel PXA 255 chips and the WinCE 5.0 as a developing environment, the system also uses the CAN bus and the present Automotive Electronic Instruments as the basis.
To reach the goal of high efficiency and to lower the cost on time and money, this system is equipped with the International Standard Communication-Protocol and the free of charged system-development platform. Compare the proposed system with the system of the others, the proposed system is superior to the others in function integration.
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Wu, Yu-Hsien, and 吳育賢. "RTOS for CAN Bus and Ethernet Protocol Transform." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/30830143126810768109.
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碩士<br>義守大學<br>電子工程學系碩士班<br>94<br>ABSTRACT
In the area of bus transmission, CAN Bus with two signal wires (CAN_H and CAN_L) can reach the goal of lowering the cost, having high effectiveness, high speed of data transmission and self-test. With its characteristic of high-noise-immunity, it is used to avoid peripheral influences. Besides, CAN Bus have been widely utilized in the application of automobile, industrial control and medical network etc.
With the rapid development of the Internet recently, Internet application is also widely embedded in lots of portable and consuming products. Ethernet is well defined protocol. If it becomes transmission medium with other devices, proper transfer is needed. As a result, the transfer of Ethernet to other devices has become a popular research topics recently.
This research aims at how to use uClinux based micro controller with the function of Real-Time to control the transfer between CAN Bus and Ethernet Protocol. In this research uClinux is used to schedule the task and allocate the order of priority. The focus of this research is as followed: 1. How can ROTS create a task to handle the CAN signal, how propriety is defined, how to schedule the task and transmit data from CAN Bus through Internet. 2. How can RTOS schedule a task when receiving signals from Ethernet, how propriety is defined, how to schedule tasks and transmit data from Ethernet through CAN Bus. Besides, when Error occurs in Bus, how can RTOS deal with Error to lower the Error Rate and run the programs much smoother.
This research use two MCUs to control CAN bus and embedded web server. CAN Node is developed by using PIC16F819 (MCU), MCP2515 (CAN Controller), MCP2551 (CAN Transceiver). Embedded web server use S3C4510B micro processor developed by SAMSUNG. The software structure mainly use uClinux with TCP/IP stack in operation system in order to fulfill the function of Internet.
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Kotlas, Jan. "Využití signálů ze sítě CAN - BUS vozidla v provozních podmínkách." Master's thesis, 2012. http://www.nusl.cz/ntk/nusl-166681.
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Pivoňka, Pavel. "Sběrnice CAN - aplikace datových výstupů pro analýzu výsledků měření na válcovém dynamometru." Master's thesis, 2007. http://www.nusl.cz/ntk/nusl-92811.
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SIE, MING-LUN, and 謝名倫. "The Development on CAN BUS Platform for Automotive Applications." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/jrz47e.
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碩士<br>中華科技大學<br>電子工程研究所碩士班<br>102<br>With the feature of automotive HMI (human-machine interface) toward safety and convenience, the control interface is more complex and the overall system wiring complexity difficult to construct configuration. Embedded systems are vastly applied into automotive electronics to achieve the convenience of human-machine interface, CAN (Controller Area Network) bus interface can effectively achieve the correct information transfer purposes. To accomplish desired goal, the vehicle control system simulation of the CAN bus is accomplished by ARM_6410 embedded platform. Main function of the vehicle control simulation system is through ARM_6410 platform designed car control simulation application (APP), vehicle interface control information is transmitted via CAN bus carry information exchange, simulation models controlled side of the car with the remote control system.
This study actually host platform with a controlled end ARM_6410 simulation verification, design control and analog interface for transmission of information can indeed reach analog transmission and vehicle control functions, so in this study car control simulation prototype for actual future car control skills to continue in-depth study.
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Fan, Yuan-Fu, and 范原福. "Aircraft Circuit Breaker Status Monitoring Based on CAN Bus." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/24351116545318122754.
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碩士<br>國立成功大學<br>航空太空工程學系碩博士班<br>96<br>The development of electrical and electronic techniques leads the avionic systems to move forward speedily. In many of the controlling and monitoring applications, the microcontroller functions as the core unit of importance continuously. The digital data bus is the backbone of digital avionics; the different data buses have particular characteristics and applicable scope. The close combination of microcontrollers and digital data buses will be able to improve further developments and more widespread applications upon the technology of avionics.
This thesis proposes a practice used on the commercial airplane, namely the circuit breaker status monitoring; seeking a appropriate manner that integrates microcontroller with digital data bus, established the distributed monitoring system by means of the C8051F040 microcontroller with Controller Area Network bus connectivity; amend the complex wiring routing in the original architecture, to reduce the amount of wiring routed in the aircraft. The analysis of results conforms that the implementation is a satisfyingly feasible way; and these achievements will be helpful for the microcontrollers provide more instantaneous and effective applications in avionic systems.
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Wu, Ching-Min, and 吳靜旻. "Battery pack power monitoring system based on CAN Bus." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/r433m8.
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碩士<br>國立彰化師範大學<br>車輛科技研究所<br>106<br>This research presented battery pack power monitoring system based on CAN Bus, which delivered battery data to power monitoring system with CAN BUS. Controller Area Network can simplify the traditional complex lines with simple series interface, and the feature of the interface can easily construct the connection of every node on the bus bar. Controller Area Network has reliable error detection and error handling. It can reduce the quantity of wire and the time spent on maintenance and checking. Controller Area Network can be used in vehicles and battery system in the factory.
The research designed the battery pack power monitoring system with microcontroller NuMicroTM NUC140, which takes the role of battery pack power monitoring and the master of control system. Using Visual C# for designing the interface of battery pack power monitoring system to monitor all the status of battery pack on the CAN BUS.
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LI, GUAN-YI, and 李冠毅. "Development of CAN Bus Driving Data Recorder for Vehicles." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/w44uvq.
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碩士<br>國立臺北科技大學<br>車輛工程系<br>107<br>The flight recorder has been installed on the aircraft for many years. The original purpose of the design was because it was difficult to have survivor when the air crash happened, and there were almost no witnesses, so it was hard to clarify the cause of the incident. With the information recorded in the flight data recorder and the cockpit voice recorder, the personnel can gradually restore the situation at the time of the incident to understand the real cause of the incident. This concept is transferred to the general vehicle, hoping to assist the vehicle accident identification, and to clarify the cause of the accident and responsibility, so this paper aims to build a CANBus recorder for general vehicles, recording all transmitted data on the bus when the vehicle starting. And the stored data can be transferred to the card through the SD card interface when needed.
The system hardware architecture takes STM32F429 as the core, and the MCP2562 receives CAN Bus data and records it in large-capacity NAND flash memory. The firmware part is based on FreeRTOS as the control core, manages the required tasks, and develops with the underlying layer of the HAL function library.
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Xiao, Bo-Wen, and 蕭博文. "Device Selection on CAN bus for Temporal Data Alignment." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/9b282r.
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碩士<br>國立臺灣大學<br>資訊工程學研究所<br>106<br>Big data is the foundation of Industry 4.0. To catch up the trend of Industry 4.0, the smart factory installs multiple supplementary sensors on production machinery and production line to collect sensed data. With the use of these sensed data, the factory server optimizes the production process. However, adding multiple supplementary sensors affects the operation in controller area network. For example, most of the data cannot be real-time transmitted. The factory does not know the correct time order of data because it has no time-stamp.
In this thesis, we use optimal priority assignment algorithm and maximal schedulable sensors selection algorithm to select the maximal schedulable set. The selection method is based on the importance and property of sensors. Without influencing the operation of sensing machine system, these data can be transmitted real-time before their deadlines through controller area network. In the end, we use data alignment protocol to arrange these sensed data in the order in which they are actually sampled.
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Wu, Chien-Nan, and 吳建男. "The development of a CAN-Bus based Digital meter." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/e2p333.
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碩士<br>國立虎尾科技大學<br>機械與機電工程研究所<br>97<br>In recent years, controller area network（CAN）bus gradually to replace the traditional cable control, such as: brake-by-wire systems, steer-by-wire systems, etc., have applied to the high-level vehicles. Therefore, the CAN technique has a dramatic development in the automotive electronics industry.
In this paper, the vehicle meter with CAN-Bus capability we developed. The CAN-Bus application layer, referred to SAE J1939 protocols or customer’s CAN application layer protocols, respectively to set the message PGN code, information transmission repetitions rate, data resolution, etc. The Microchip dsPIC 4011/5011 was selected as a microcontroller, the NXP PCA 82C251 (general) / PCA82C252 (fault-tolerant) as the transceiver, and using Swatch stepper motors with Powertip LCD/VBEST LCD display modules. Consequently, a CAN-Bus based digital meter was completed.