Browse Topic: Communication systems

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SIMULATION FOR VEHICLE-TO-VEHICLE AND VEHICLE-TO-GRID RESOURCE SHARING ANALYSIS2024-01-344411/15/2024
ABSTRACT A simulation capable of modeling grid-tied electrical systems, vehicle-to-grid (V2G) and vehicle-to-vehicle(V2V) resource sharing was developed within the MATLAB/Simulink environment. Using the steady state admittance matrix approach, the unknown currents and voltages within the network are determined at each time step. This eliminates the need for states associated with the distributed system. Each vehicle has two dynamic states: (1) stored energy and (2) fuel consumed while the generators have only a single fuel consumed state. One of its potential uses is to assess the sensitivity of fuel consumption with respect to the control system parameters used to maintain a vehicle-centric bus voltage under dynamic loading conditions.
Jane, Robert S., Parker, Gordon G., Weaver, Wayne W., Goldsmith, Steven Y.
Vehicle diagnostics and Vehicle to Infrastructure Communication through Visible Light Communication2024-26-008201/16/2024
High Fidelity Communication has become a necessity in various sectors. Different wireless data transfer methods play a vital role in various far field and near-field communications. Wireless communication for transferring data through radio spectrum has been a continuous evolving trend, especially in Automotive Sector, with fleet monitoring, platooning and even connected vehicles. Some important parameters considered in selecting a wireless platform would be bandwidth, data transfer, speed, and security. Some interesting advantages of communication over the visible spectrum has led to the evolution of Light Fidelity. Implementation of Visible Light Communication (VLC) in the automotive field might enable safer driving conditions through vehicle-to-vehicle (V2V) and vehicle to Infrastructure (V2I) communication with high data transmission rates and efficient-bandwidth usage. The principle of VLC is based on “line of sight” data transmission through modulation of the light source. Highly
Ali, Rifat, N, Prem, Natarajan, Akshay, Kashi, Anitha
Cyber Threats and its Mitigation to Intelligent Transportation System2024-26-018401/16/2024
With the revolutionary advancements in modern transportation, offering advanced connectivity, automation, and data-driven decision-making has put the intelligent transportation systems (ITS) to a high risk from being exposed to cyber threats. Development of modern transportation infrastructure, connected vehicle technology and its dependency over the cloud with an aim to enhance safety, efficiency, reliability and sustainability of ITS comes with a lot more opportunities to protect the system from black hats. This abstract explores the landscape of cyber threats targeting Intelligent Transportation Systems, focusing on their potential impacts, vulnerabilities, and mitigation strategies. The cyber-attacks in ITS are not just limited to Unauthorized Access, Malware and Ransomware Attacks, Data Breaches, Denial of Service but also to Physical Infrastructure Attacks. These attacks may result in potentially disrupting critical transportation infrastructure, compromise user safety, and can
Dewangan, Kheelesh Kumar, Panda, Vibek, Ojha, Sunil, Shahapure, Anjali, Jahagirdar, Shweta Rajesh
Bluetooth Profile Testing Using Packet Tracing in Automotive Domain2024-26-034901/16/2024
With the advancement of automotive industries, the need for wireless connectivity between vehicle and smartphone is increasing. To meet the demand for wireless connectivity, Bluetooth plays a vital role. Testing Bluetooth systems is challenging and complex when development cycles of the system involve multiple partners. The system under test must fulfil consumers expectation of Bluetooth functionality paired with their personal devices. Despite many advances and existence of a few reliable systems, hardware limitation, and lack of standardization in Bluetooth test system are some of the prolonged issues. Throughout the course, various capabilities and existing traditional Bluetooth testing system practice were researched, which majorly at a system level (Black box). The gap of such testing is the escape of defect which involves the interoperability of multiple profiles like AVRCP, HFP, and A2DP. This paper focuses on reliable testing approach which is based on packet level testing
Selokar, Ashish Kishor, Iqbal, MD, Tavhare, Sarika, Anilkumar, Sandhya
Automated Charging Methodology for Fleet Operated EV Buses to Reduce Down Time and Increase Safety at Charging Station2024-26-011201/16/2024
Prime concern for electric vehicle where the application of the vehicle is public transport, is the charging of vehicle and operation of its infrastructure. Such an example of operating the EV buses is under the GCC (gross cost contract) model, with high operation time and comparatively lesser time for charging. It is challenging to meet these requirements. To counter this situation in fleet operated busses it is proposed to adapt an automated charging method which involves minimum man power intervention and automated mechanism to connect & disconnect the charging connectors. This paper proposes an automated pantograph mechanism based method of charging EV buses, meeting requirements as per SAE J3105 & ISO 15118 standards, which would be an ideal way to resolve the current situation. In the above mentioned pantograph type charging, the charging station or depot will have an infrastructure including charger whose input will be from grid, and the charging dispenser will be pantographs
gullyal, Avinash, Ahmed, Yasir, Amancharla, Naga Chaithanya, kinjalkar, Milind
Safety Spacing Control of Truck Platoon Based on Emergency Braking under Different Road Conditions10-07-01-000510/13/2022
Vehicle platooning reduces fuel consumption, improves traffic throughput, and achieves smaller intervehicle spacing which increases the probability of danger during platoon braking. This article presents a sliding mode control based on the safety spacing policy for longitudinal control of a connected truck platoon with a focus on the predecessor following interactions. In particular, the modified safety spacing policy considering the intervehicle braking information communication delay, the sluggish nature of the brake actuator, the road conditions on each vehicle as well as the vehicle motion state is proposed. On this basis, an acceleration sliding mode controller is proposed, which takes into consideration the spacing error and speed error of the intervehicle, and the control error is zero, so as to obtain the expected acceleration of each vehicle in the platoon. Simulation results of truck platooning with six trucks using TurckSim have demonstrated the effectiveness of the proposed
Zhao, Qian, Zheng, Hongyu, Kaku, Chuyo, Cheng, Feihao, Zong, Changfu
Design and Development of a Virtual Autonomous System2022-01-507210/03/2022
An autonomous vehicle or a driverless vehicle is a ground vehicle that is capable of sensing its environment and moving safely with little to no human input. The present study aims to validate existing literature on vehicle following, emergency braking, lane changing, overtaking, and jerk trajectory with regard to autonomous vehicles. By using the jerk trajectory equation, we are able to optimize it by implementing a complete overtaking procedure. We are also able to compare the variation in both the dynamic and kinematic bicycle model for the same vehicle and traveling the same distance. A new kinematic bicycle model is built, which is more simple to construct. This project is performed using MATLAB and Simulink for creating and modifying the system blocks. There has also been an integration of 3D visualization software such as VR sink and Unreal Engine. We construct the vehicles by simple transfer functions, ACC and PID as the main system blocks for vehicles 1, 2, and 3, respectively
Narain, C.M., Patil, Sharanbassapa S.
Internet Protocol Suite (IPS) SubcommitteeWC-0060508/17/2022
The IPS Subcommittee is leading the development of industry standards for the Internet Protocol Suite for aeronautical safety services. This includes airborne, ground-based, and space-based communication systems. This activity coordinates ATN/IPS development activities among international Standards Development Organizations (SDOs) namely ICAO, EUROCAE, and RTCA.
Airlines Electronic Engineering Committee
Wireless Security in Vehicular Ad Hoc Networks: A Survey12-06-02-001108/17/2022
Vehicular communications face unique security issues in wireless communications. While new vehicles are equipped with a large set of communication technologies, product life cycles are long and software updates are not widespread. The result is a host of outdated and unpatched technologies being used on the street. This has especially severe security impacts because autonomous vehicles are pushing into the market, which will rely, at least partly, on the integrity of the provided information.We provide an overview of the currently deployed communication systems and their security weaknesses and features to collect and compare widely used security mechanisms. In this survey, we focus on technologies that work in an ad hoc manner. This includes Long-Term Evolution mode 4 (LTE-PC5), Wireless Access in Vehicular Environments (WAVE), Intelligent Transportation Systems at 5 Gigahertz (ITS-G5), and Bluetooth. First, we detail the underlying protocols and their architectural components. Then
Blazek, Thomas, Ademaj, Fjolla, Marksteiner, Stefan, Priller, Peter, Bernhard, Hans-Peter
Impact of Positioning Uncertainty on Connected and Automated Vehicle Applications12-06-02-001008/05/2022
Many Connected and Automated Vehicle (CAV) applications assume that highly accurate positioning is always available. However, this is not the case in many real-life situations (e.g., when a satellite-based navigation system is used for positioning in urban canyons). Furthermore, very little research has been conducted to evaluate the impacts of position accuracy on CAV applications at the traffic level. The objective of this article is to investigate the positioning errors that could be tolerated by a sample of CAV applications. Toward this end, we (1) perform a general analysis of the positioning requirements of selected safety-, mobility- and environmental-focused applications and (2) examine in greater detail the effect of positioning errors on two representative CAV applications, Eco-Approach and Departure at Signalized Intersections (EAD) and High-Speed Differential Warning (HSDW). The results of (1) indicate that lane-level positioning accuracy is sufficient to enable most CAV
Williams, Nigel, Darian, Parisa Borhani, Wu, Guoyuan, Closas, Pau, Barth, Matthew
Toward an Automated Scenario-Based X-in-the-Loop Testing Framework for Connected and Automated Vehicles12-05-04-003006/27/2022
Emerging technologies for connected and automated vehicles (CAVs) are rapidly advancing, and there is an incremental adoption of partial automation systems in existing vehicles. Nevertheless, there are still significant barriers before fully or highly automated vehicles can enter mass production and appear on public roads. These are not only associated with the need to ensure their safe and efficient operation but also with cost and delivery time constraints. A key challenge lies in the testing and validation (T&V) requirements of CAVs, which are expected to be significantly higher than those of traditional and partially automated vehicles. Promising methodologies that can be used toward this goal are scenario-based (SBT) and X-in-the-Loop (XiL) testing. At the same time, complex techniques such as co-simulation and mixed-reality simulation could also provide significant benefits. Nevertheless, the benefits of individual solutions are likely to be significantly smaller, if considered
Kyriakopoulos, Ioannis, Jaworski, Pawel, Edwards, Tim
Real-Sim Interface: Enabling Multi-resolution Simulation and X-in-the-Loop Development for Connected and Automated Vehicles12-05-04-002606/27/2022
Connected and automated vehicles (CAVs) can bring safety, mobility, and energy benefits to transportation systems. Ideally, CAV applications would be fully evaluated and validated prior to real-world implementation. However, many technical challenges in both software and hardware hinder the process. To comprehensively evaluate all aspects of CAV applications, an integrated evaluation environment is needed with various simulation tools from different domains. In the current literature, there lacks a well-developed interface to enable multi-resolution simulation of vehicle, traffic, virtual environment, and hardware-in-the-loop (HIL) simulation. In this work, a modular and flexible interface is developed to enable multi-resolution vehicle and traffic co-simulation for CAV applications. This interface is built upon Oak Ridge National Laboratory’s (ORNL’s) Real-Sim approach, can support various simulation tools and real-time X-in-the-loop (XIL) simulations, and is based on network
Shao, Yunli, Deter, Dean, Cook, Adian, Wang, Chieh (Ross), Thompson, Bradley, Perry, Nolan
A hybrid sensor-fusion system to locate the Electric gridlines by UAV for range extension in Urban areas2022-26-114905/26/2022
This paper explores the efficacy and efficiency of a system for the effective location of electric gridlines during daytime and night-time by the onboard and offboard transceivers of UAV through vehicle to infrastructure communication. The usage of electric gridlines in urban areas helps to extend the range of the UAVs by charging the onboard battery using an extended arm. The same arm can also be used for direct propulsion of the motors onboard UAV, thereby minimizing the reliance on battery. UAVs with advanced Image processing algorithms are utilized in the inspection of the electric grid lines themselves in the Power industry. The camera based algorithms are not effective during night-time when the gridlines are near invisible. This can be mitigated by evaluating light in other spectral ranges, but this would add to the load of the UAV. We propose a system which combines multiple information sources and helps locate the gridlines for range extension, specifically for the delivery of
Pappala, Lokendra Pavan Kumar, Enagandula, Srujan, Manoharan, Sandeepkumar
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SintzUSER, Jeneane
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Rickard, Christopher, SintzUSER, Jeneane
Wireless Smart Contact Lenses Detect DiseaseTBMG-4554204/01/2022
Having diabetes means a lifelong obligation of insulin shots and monitoring of blood glucose levels. But a team of researchers has developed a way to control the secretion of insulin just by wearing contact lenses.
Quantifying System Level Impact of Connected and Automated Vehicles in an Urban Corridor2022-01-017303/29/2022
Numerous studies have demonstrated significant energy reduction for an ego vehicle by up to 20% leveraging Vehicle-to-Everything (V2X) technologies [1, 2, 3, 4]. Some studies have also analyzed the impact of such vehicles on the energy consumption of other vehicles in a suburban or a highway corridor [5, 6]. Southwest Research Institute (SwRI), in collaboration with Continental and Hyundai, is currently working on a Department of Energy funded project that is focused on quantifying the impact of multiple ego vehicles (smart vehicles) on the total energy consumption of the corridor under various traffic conditions, vehicle electrification level, vehicle-to-vehicle (V2V) technology penetration, and the number of smart (ego) vehicles in an urban setting. A six-kilometer-long urban corridor from Columbus, Ohio was modeled and calibrated via real-world data in PTV Vissim traffic microsimulation software. Five forward-looking powertrain models, consisting of two battery electric vehicles
Bhagdikar, Piyush, Gankov, Stanislav, Rengarajan, Sankar, Sarlashkar, Jayant, Hotz, Scott, Bakshi, Kaivalya
A Novel Vehicle-to-Vehicle Fast Charging Control System Utilizing Motor and Inverter in EV2022-01-019403/29/2022
As electric vehicles become more widespread, such vehicles may be subject to “range anxiety” due to the risk of discharging during driving or the discharging when left unused for a long period. Accordingly, a vehicle equipped with a mobile charger that can provide a charge in an emergency. The vehicle with the mobile charger is usually composed of a large capacity battery, a power converter in a small truck. However, the large capacity battery and the power converter are disadvantageous in that they are large in size and expensive and should be produced as a special vehicle. In this paper, we propose a method to solve the problem using an internal EV system without requiring an additional power generation, battery and a charging-and-discharging device. The method is a novel Vehicle-to-Vehicle fast charging control system utilizing motor and inverter in EV.
Choi, Jaehyuk, Song, ByeongSeob, Kim, SungKyu, Kim, Hyunsup, Kim, Talchol, Kim, SeokJoon, Cho, InYoung, Choi, YoungGon
Demonstration of energy consumption reduction in class 8 trucks using eco-driving algorithm based on on-road testing2022-01-015703/29/2022
Vehicle to Everything (V2X) communication has enabled on-board access to the information from other vehicles and infrastructure. This information, traditionally used for safety applications, is increasingly being used for improving fuel economy of the vehicles [1, 2, 3, 4, 5]. This work aims at demonstrating energy consumption reduction in heavy/medium duty vehicles using the eco-driving algorithm. The algorithm is enabled by V2X communication and uses data contained in basic safety messages (BSMs) and signal phase and timing (SPaT) to generate an energy-efficient velocity trajectory for the vehicle to follow. A ~25.7 km (16-mi) urban corridor in Bexar County, Texas, was modeled in a microscopic traffic simulation package and calibrated to match real-world conditions. For the trucks using this algorithm, a nominal reduction of 7% in energy consumption and 6% in trip time was observed in simulation. This was validated by on-track testing of a pair of velocity profiles. The track testing
Bhagdikar, Piyush, Gankov, Stanislav, Frazier, Cole, Rengarajan, Sankar, Warden, Rebecca, Brown, Michael, Sarlashkar, Jayant
Computer Vision-Based V2X Collaborative Perception2022-01-008203/29/2022
In this paper, we present the computer vision-based V2X collaborative perception. Our system uses a forward-looking camera in the Host Vehicle. The camera detects road users such as pedestrians, vehicles, and motorcycles. Such information includes object type, relative location, direction, and speed. This information is used to compose proxy Basic Safety Messages on behalf of the detected objects. Early adopters of the V2X technology can experience the benefits of enhanced V2X market penetration. The outcome of adopting our concept will result in an inflated V2X market penetration rate leading to earlier safety, mobility, and situational awareness improvements. The ultimate goal is for all road participants to be fully aware of each other. The novelty of our work is the integration of computer vision-based detection and LTE-V V2X communications, in addition to implementing the concept for pedestrians and bicyclists. A similar concept will work for other sensors such as radar and LiDARs
Miucic, Radovan, Rajab, Samer
The Effects of Measurement Uncertainty and Error on Operational Safety Assessment (OSA) Metrics2022-01-098503/29/2022
As the deployment of automated vehicles (AVs) on public roadways expands, there is a growing need to establish metrics that can be used to evaluate vehicle operational safety. The set of Operational Safety Assessment (OSA) metrics previously proposed by the Institute of Automated Mobility (IAM) are a step towards achieving this goal. The safety envelope OSA metrics can be computed using kinematics derived from video data captured by infrastructure-based cameras and thus do not require vehicle-to-infrastructure (V2I) connectivity, though connectivity could enhance kinematic data accuracy. However, the calculation of some metrics includes certain vehicle-specific parameters that must be assumed or estimated if they are not communicated directly by the vehicle. Uncertainty and errors in kinematic measurements and assumed parameters can affect the accuracy and ultimately the utility of the safety envelope OSA metrics. This paper investigates how uncertainties and errors in measured and
Kidambi, Narayanan, Wishart, Jeffrey, Elli, Maria, Como, Steven
Electromagnetic test setup best practices.2022-01-015103/29/2022
Abstract The automotive industry has increased reliance on electronics technology and wireless communication systems and the demand for these systems are still increasing. With this demand there is a need to ensure these systems do not interfere with each other which may cause system performance degradation or even failure. Electromagnetic compatibility (EMC) is a discipline that deals with interaction between electronic and wireless systems. During the EMC testing of an electronic component the environment of the component is represented to isolate the device under test (DUT) to determine the component’s EMC characteristics. Geometric aspects of an EMC test setup may impact test results without the knowledge of the test engineer. In this paper, electromagnetic simulation and measurement results will show the impact of one of the least obvious but most often experienced issues in an EMC setup – grounding. Grounding issues will be illustrated for low frequency magnetic field, radio
Sims, Douglas Andrew, Piper, Scott
Evaluating Cybersecurity Vulnerabilities in V2X Communications 2022-01-013003/29/2022
Over the years there has been an enormous interest in V2X communications that enable an array of benefits such as road safety, traffic efficiency and to pave the way for fully automated driving through its non-line of sight sensing. Hence, there is a need for these V2X communications to be secured and reliable by ensuring that the cybersecurity properties like Confidentiality, Integrity, and Availability (CIA) are not compromised. This paper evaluates the potential cybersecurity use-cases developed, focusing on vulnerabilities like black hole attack, sybil attack and timing attack in V2X communications. The proposed cybersecurity vulnerabilities were tested and evaluated on FEV’s Smart Vehicle Demonstrator. Furthermore, the best practice countermeasure methods to avoid and overcome the risks identified based on the results were also discussed.
Nagavelli, Sai Krishnanand, Yedida, Siddhartha, Alzu'bi, Hamzeh, Tasky, Tom
Mechanism to Identify a Legitimate Vehicle User in Remote Keyless Entry System2022-01-013703/29/2022
The advancements of the automotive system in all the aspects from safety to user experience brings never ending list of electronics components into the system. One of the pure critical components in providing the vehicle safety is the digital key or wireless vehicle entry systems. This component is responsible for protecting all the other components of the vehicle and the vehicle itself from thieves and illegal usage of the vehicle. The compromisation of this critical component is equivalent to a compromisation of the entire vehicle along with some legal implications on the vehicle owner. There are numerous additional systems in the automotive electronics enhances the security of this critical digital key/wireless vehicle entry system in protecting the vehicles from attackers. However, there is no component available in the market which does user/owner authentication considering its impact and criticality on both the vehicle and its owner. Either the lost key or the stolen key in the
Ansari, Asadullah, P.C., Karthik, D H, Sharath, Aziz, Mohammad, Mukherjee, Sourik
The Digital Foundation Platform - A Multi-layered SOA Architecture for Intelligent Connected Vehicle Operating System2022-01-011603/29/2022
The advancement of E/E architecture has made modern EV a sophisticated and high performance computing system. High level AD/ADAS functions and applications require real time and accurate perception, localization, fusion, planning and control using computer vision or deep learning based AI algorithms to ensure functional safety and comfort user experiences. Legacy AD/ADAS development from OEMs centers around developing functions on ECUs using services provided by Autosar CP to meet automobile grade and mass production requirements. Additionally, Autosar AP has been maturing and provide richer services and function abstractions. Still the applications development and supporting system software and closely coupled together, this makes application development and enhancement less scalable or flexible, resulting in longer development cycle and slower time to market. This paper presents a multi-layered, service-oriented autonomous driving operating system foundation (we called it Digital
yu, david
Functional verification and validation of secure controller area network (CAN) communication2022-01-011803/29/2022
In agriculture industry, increasing use of Vehicle Internet of Things (IoT), telematics and emerging technologies are resulting in smarter machines with connected solutions. Inter and Intra Communication with vehicle to vehicle and inside vehicle - Electronic Control Unit (ECU) to ECU or ECU to sensor, requirement for flow of data increased in-turn resulting in increased need for secure communication. In this paper, we focus on functional verification and validation of secure Controller Area Network (CAN) for intra vehicular communication to establish confidentiality, integrity, authenticity, and freshness of data, supporting safety, advanced automation, protection of sensitive data and IP (Intellectual Property) protection. Network security algorithms and software security processes are the layers supporting to achieve our cause. Test environment setup with secured hardware and simulated models, test scenarios and test data created to achieve our objective. For validation, we relied
Khatik, Gourab, Katragadda, Praveen, Labade, Chetan
Mobile control-measuring system for determination and providing vehicles brake performance2022-01-110003/29/2022
The approach on the example of vehicles brake performance determination and provision, based on using of mobile measurement complex with software is developed. Requirements for mobile registration and measurement system to evaluate and ensure performance of wheeled vehicles with regard to modern tools and approaches are developed: based on a modern elemental base taking into account the further development of microprocessor technology; low cost in manufacture; comply with the modular construction principle; high degree of mobility, small dimensions and weight characteristics, a power source independent of the wheeled vehicle network; to connect additional sensors (accelerometers, angles, etc.) and photo-video capture devices; ability to provide wireless communication with the database on the server in the presence of a stable signal of the mobile network; an open operating system for further improvement of principles and algorithms on the basis of modern high-level programming language
Kholodov, Mykhailo, Schmoe, Joe
Mobile Safety Application for Pedestrians Utilizing P2V Communication Over Bluetooth2022-01-017603/29/2022
Vulnerable Road User (VRU) safety has been an important issue throughout the years as corresponding fatality numbers in traffic have been increasing each year. With the developments in connected vehicle technology, there are new and easier ways of implementing Vehicle to Everything (V2X) communication which can be utilized to provide safety and early warning benefits for VRUs. Mobile phones are one important point of interest with their sensors being increased in quantity and quality and improved in terms of accuracy. Bluetooth and extended Bluetooth technology in mobile phones has enhanced support to carry larger chunks of information to longer distances. The work we discuss in this paper is related to a mobile application that utilizes the mobile phone sensors and Bluetooth communication to implement Personal Safety Message (PSM) broadcast using the SAE J2735 standard to create a Pedestrian to Vehicle (P2V) based safety warning structure. This implementation allows the drivers to
Gelbal, Sukru Yaren, Cantas, Mustafa Ridvan, Aksun Guvenc, Bilin, Guvenc, Levent, Surnilla, Gopichandra, Zhang, Hao
Key Fob Relay Attack Prevention With Pattern Matching2022-01-013203/29/2022
Key FOB relay attack is new form of cybersecurity attack which was demonstrated by hacker on many vehicles from different manufacturers. In this type of attack the hacker works in pair. 1 hacker will be near the vehicle and other is positioned near the user who has keys. Hacker initiates the communication between key fob and vehicle by catching signals with RF receiver and retransmitting signals through the Signal generator. This way hacker creates a RF bridge between vehicle and key fob. Since both ECU’s are communicating with each other they assume that user is near car. After security handshake car is unlocked and engine can also be started This paper is a new solution which will provide some degree of defense for this attack. This logic is built around the power level of received signal between the vehicle and key fob. Both vehicle ECU and key fob will have capability to evaluate the power level of received RF signal. Vehicle ECU and KeyFob Ecu’s will evaluate the power level of
Kulkarni, Ashwin
Green Light Optimized Speed Advisory with Traffic Preview2022-01-017403/29/2022
By utilizing the vehicle to infrastructure communication, the conventional Green Light Optimized Speed Advisory (GLOSA) applications give speed advisory range for drivers to travel to pass at the green light. However, these systems do not consider the traffic between the ego vehicle and the traffic light location, resulting in inaccurate speed advisories. Therefore, the driver needs to intuitively adjust the vehicle's speed to pass at the green light and avoid traffic in these scenarios. Furthermore, inaccurate speed advisories may result in unnecessary acceleration and deceleration, resulting in poor fuel efficiency and comfort. To address these shortcomings of conventional GLOSA, in this study, we proposed the utilization of collaborative perception messages shared by smart infrastructures to create an enhanced speed advisory for the connected vehicle drivers and automated vehicles. Two different algorithms were designed by utilizing the available traffic preview (Signal Phase and
Cantas, Mustafa Ridvan, Surnilla, Gopichandra
High-Fidelity Heavy-Duty Vehicle Modeling Using Sparse Telematics Data 2022-01-063503/29/2022
Heavy-duty commercial vehicles tend to have poor energy efficiency due to relatively high mass, poor aerodynamic characteristics, and high auxiliary power loads. These factors lead directly to high fuel cost per mile, perpetuate domestic dependence on imported oil, and contribute to climate change and environmental damage in the form of air pollution. The optimization of energy efficiency in these vehicles presents a way to reduce industry expenses while also taking action on the growing issue of climate change. Vehicle modeling provides a path for energy efficiency improvement by allowing rapid experimentation of different vehicle characteristics on fuel consumption. This research focused on creating higher fidelity models using real-world, sparsely collected telematics data from a large fleet of heavy-duty vehicles. The largest challenge encountered in this research was the use of sparse data, where samples are sporadically collected, leading to infrequent sampling rate and
Carow, Kyle, Cantwell, Nathaniel, Ivanco, Andrej, Holden, Jacob, Baker, Chad, Miller, Eric, Asher, Zachary
2.0.105 - Piston Sealing System Structure Design for Automobile's Lightweight Auto-TransmissionSAE-PP-0043509/24/2021
Current automobile's auto-transmission has problems of defects and cost reduction because of welding process and very complicated assembly process due to individualized transmission piston and sealing components. Also, size and heavy weight of transmission piston components are the source of low mileage because they are made of aluminum, steel material. In this study, therefore, we perform structure design for piston sealing system which integrates piston and sealing material for automobile's lightweight auto-transmission. Also performed stress analysis through finite element analysis to secure required suitable strength when internal pressure is applied after assemble.
Mutagaana, Festo
EXPLORATION OF THE REAL TIME BEHAVIOR OF EVENT CHAINS BY SIMULATION AND MEASUREMENT OF "IN VEHICLE NETWORKS"2021-26-049009/22/2021
Recent years, transformation in automotive industry have a huge technology growth. Flexray, Control Area Network (CAN), Local Interconnect Network (LIN), CAN-FD, Automotive Ethernet are the principal automotive communication protocols in industry exercise. CAN protocol is primely used among the automotive communication protocols. But such predominantly used CAN protocol doesn‘t have clear appropriateness of overhead, latency and deterministic performance behavior. In order to analyze these complex uncertainty behavior, Electronic Control Unit’s (ECU) dynamic architecture of communication system and the CAN bus load behavior should be identified. Here, we used AUTOSAR based communication stack. This abstract deals with deterministic timing analysis of CAN protocol by which we can optimize it for having potential End-to-End (E2E) runtime communication for a dedicated event chain. The analysis was targeted by two approaches – (a) Timing Simulation and (b) prove of simulation results
Kalirajan, Vignesh, Mader, Ralph, Kastner, Stefan
0071 - Testing DownloadSAE-PP-0042009/13/2021
The combustion occurring in an internal combustion engine subsequently emits high-intensity acoustic pulse along with exhaust gas flow. Formula SAE competition is imposing restrictions on acoustic emissions from an engine, which necessitates the activity of design and optimization of a high-performance muffler. The muffler has to be designed with the objectives of satisfying acoustic emission norms imposed and as well strategically designed to have less obstruction to exhaust flow and being lightweight to maintain the integrity of a Formula Student car. A novel approach of combining the effect of adsorptive and resonating muffler design has been inculcated in this work after the estimation of muffler size and resonance. The acoustic pressure analysis and exhaust flow efficiency are carried out using Ricardo WAVE. These simulation results are validated with the developed prototype. The developed prototype is ascertained to fulfil the requirement of acoustic emission norms (103 dB[C
SintzADMIN, Jeneane, SintzUSER, Jeneane, Anthony, Lindsay, Mutagaana, Festo, Mutz, Jennifer
Facing 5G New Radio (NR) Test ChallengesTBMG-3986909/01/2021
It has been nearly five years since the International Telecommunication Union (ITU) released ITU-R M.2083-0, with a roadmap to release IMT-2020 to address the anticipated future of 5G performance that would greatly eclipse that of IMT-Advanced and then-planned 4G technology.
Atom-Based Radio CommunicationsTBMG-3979709/01/2021
Researchers demonstrated an atom-based sensor that can determine the direction of an incoming radio signal, another key part for a potential atomic communications system that could be smaller and work better in noisy environments than conventional technology.
Communicating Via Long-Distance LasersTBMG-3986009/01/2021
Visible light has been used to communicate for centuries. Lanterns on ships and Morse code flashes allowed information to be conveyed at a distance. But now there’s a better way to use light to communicate over even further distances and with far more accuracy: lasers.
Secure Wireless Communication SystemTBMG-3987009/01/2021
pureLiFi Edinburgh, UK +44 (0) 131 516 1816
Ka-Band Front-End Monolithic Microwave Integrated Circuits (MMICs) and Transmit/Receive (T/R) Modules Testing21AERP08_0908/01/2021
Gallium nitride monolithic microwave integrated circuit (MMIC) technology has superior performance in power amplifier applications, as well as for low-noise amplifiers with high dynamic range and the ability to survive large, potentially damaging input power levels without the need for additional limiters at the system level. Army Research Laboratory, Adelphi, Maryland The US Army Combat Capabilities Development Command Army Research Laboratory (ARL) has been evaluating and designing efficient broadband high-power amplifiers for use in sensors, communications, networking, and electronic warfare (EW). ARL submitted designs of Ka-band low-noise amplifiers (LNAs), power amplifiers (PAs), and transmit/receive (T/R) switches using Qorvo Inc.'s high-performance 0.15-μm gallium nitride (GaN) fabrication process. These amplifiers were fabricated as one- and two-stage designs, as well as integrated T/R modules for bidirectional transceivers as part of a recent ARL Qorvo Prototype Wafer Option
Connections for Control: Communications Interfaces for Position and Motion SensorsTBMG-3958608/01/2021
Taxonomy and Definitions for Terms Related to Driving Automation Systems for On-Road Motor VehiclesJ3016_202104 (Current)04/30/2021
This document describes [motor] vehicle driving automation systems that perform part or all of the dynamic driving task (DDT) on a sustained basis. It provides a taxonomy with detailed definitions for six levels of driving automation, ranging from no driving automation (Level 0) to full driving automation (Level 5), in the context of [motor] vehicles (hereafter also referred to as “vehicle” or “vehicles”) and their operation on roadways: Level 0: No Driving Automation Level 1: Driver Assistance Level 2: Partial Driving Automation Level 3: Conditional Driving Automation Level 4: High Driving Automation Level 5: Full Driving Automation These level definitions, along with additional supporting terms and definitions provided herein, can be used to describe the full range of driving automation features equipped on [motor] vehicles in a functionally consistent and coherent manner. “On-road” refers to publicly accessible roadways (including parking areas and private campuses that permit
On-Road Automated Driving (ORAD) committee
Taxonomy and Definitions for Terms Related to Driving Automation Systems for On-Road Motor VehiclesJ3016_202104-TEST-REC (Historical)04/30/2021
This document describes [motor] vehicle driving automation systems that perform part or all of the dynamic driving task (DDT) on a sustained basis. It provides a taxonomy with detailed definitions for six levels of driving automation, ranging from no driving automation (Level 0) to full driving automation (Level 5), in the context of [motor] vehicles (hereafter also referred to as “vehicle” or “vehicles”) and their operation on roadways: Level 0: No Driving Automation Level 1: Driver Assistance Level 2: Partial Driving Automation Level 3: Conditional Driving Automation Level 4: High Driving Automation Level 5: Full Driving Automation These level definitions, along with additional supporting terms and definitions provided herein, can be used to describe the full range of driving automation features equipped on [motor] vehicles in a functionally consistent and coherent manner. “On-road” refers to publicly accessible roadways (including parking areas and private campuses that permit
On-Road Automated Driving (ORAD) committee
Motion Estimation of Connected and Automated Vehicles under Communication Delay and Packet Loss of V2X Communications2021-01-010704/06/2021
The emergence of the connected and automated vehicle (CAV) technology enables numerous advanced applications in our transportation system, benefiting our daily travels in terms of safety, mobility, and sustainability. However, vehicular communication technologies such as Dedicated Short-Range Communications (DSRC) or Cellular-Based Vehicle-to-Everything (C-V2X) communications unavoidably introduce issues like communication delay and packet loss, which will downgrade the performances of any CAV applications. In this study, we propose a consensus-based motion estimation methodology to estimate the vehicle motion when the vehicular communication environment is not ideal. This methodology is developed based on the consensus-based feedforward/feedback motion control algorithm, estimating the position and speed of a CAV in the presence of communication delay and packet loss. The simulation study is conducted in a traffic scenario of unsignalized intersections, where CAVs coordinate with each
Wang, Ziran
V2X Connectivity with ROS for AD Applications2021-01-006004/06/2021
Increased levels of autonomy requires an increasing amount of sensory data for the vehicle to make appropriate decisions. Sensors like camera, Lidar and Radar will help to perceive the surroundings, exposing nearby objects and blind spots within the line of sight. With V2X connectivity, vehicles communicate to other vehicles and infrastructure using wireless communications even in non-line of sight conditions. This paper presents an approach to utilize a V2X system to develop Automated Driving (AD) features in a Robot Operating System (ROS) environment. This was achieved by developing ROS drivers and creating custom messages to enable the communication between the V2X system and vehicle sensors. The developed algorithms were tested on FEV’s Smart Vehicle Demonstrator. The test results show that the proposed V2X automated driving approach has increased reliability compared to that of camera, Radar and Lidar based autonomous driving.
Yedida, Siddhartha, Paudyal, Ajay, Matta, Sherif, Tasky, Tom
Customized Co-Simulation Environment for Autonomous Driving Algorithm Development and Evaluation2021-01-011104/06/2021
Deployment of autonomous vehicles requires an extensive evaluation of developed control, perception, and localization algorithms. Therefore, increasing the implemented SAE level of autonomy in road vehicles requires extensive simulations and verifications in a realistic simulation environment before proving ground and public road testing. The level of detail in the simulation environment helps ensure the safety of a real-world implementation and reduces algorithm development cost by allowing developers to complete most of the validation in the simulation environment. Considering sensors like camera, LiDAR, radar, and V2X used in autonomous vehicles, it is essential to create a simulation environment that can provide these sensor simulations as realistically as possible. While sensor simulations are of crucial importance for perception algorithm development, the simulation environment will be incomplete for the simulation of holistic AV operation without being complemented by a
Cantas, Mustafa Ridvan, Guvenc, Levent
Deep Learning Based Real Time Vulnerability Fixes Verification Mechanism for Automotive Firmware/Software2021-01-018304/06/2021
Software vulnerability management is one of the most critical and crucial security techniques, which analyzes the automotive software/firmware across the digital cockpit, ADAS, V2X, etc. domains for vulnerabilities, and provides security patches for the concerned Common Vulnerabilities and Exposures (CVE). The process of automotive SW/FW vulnerability management system between the OEMs and vendors happen through a channel of fixing a certain number of vulnerabilities by 1st tier supplier which needs to be verified in front of OEMs for the fixed number and type of patches in there deliverable SW/FW. The gap of verification between for the fixed patches between the OEMs and 1st tier supplier requires a reliable human independent intelligent technique to have a trustworthiness of verification. Hence, in this regard, a novel machine learning based intelligent verification technique is proposed which is free from human intervention to verify the certain number and type of vulnerabilities
Ansari, Asadullah, Ameen Alimohideen, Mohamed, P.C., Karthik
Analysis of Vehicle GPS and Derived Speed Data from Ford SYNC Generation 3, Version 2 Systems Acquired with Berla iVe2021-01-090304/06/2021
Data acquired from vehicle infotainment systems has continued its growth as key evidence in vehicle-related investigations. The accident reconstruction community continues to actively pursue digital data from vehicles to be used alongside traditional forms of physical and electronic evidence. Some of the vehicle infotainment systems that have provided valuable evidence for several years are now being updated by their manufacturers. One such system is the Ford SYNC Generation 3 (SG3) system. In 2019, Ford began installing an updated version of this system that included changes to the SYNC module. The new system, referred to as SYNC Generation 3, version 2 (SG3v2) is outwardly identical to the original SG3 system until the module is physically removed from the vehicle. Ford has released the new module globally and it has been observed in North America, Australia, the United Kingdom, and several European countries. Testing of instrumented Ford vehicles manufactured with the SG3v2 system
Vandiver, Wesley, Anderson, Robert
Drivers’ Responses to Lead Vehicles: Thresholds for Triggering an Emergency Response, Age Differences, Crash Risks, and Influence of Secondary Task Engagement2021-01-089804/06/2021
Analyses of driver response time studies and fatal crash statistics were examined to determine: 1. whether all rear-end crash types can be analyzed as one crash type, 2. average braking thresholds for drivers, and 3. the influence cell phone usage has on drivers’ response times when responding to a lead vehicle. The goal of this research is to recommend protocols for investigating LV crashes that is supported by the literature. Two distinct lead vehicle [LV] response time events emerged: LV platoon (two vehicles traveling together in close proximity) and LV looming (a vehicle approaching a stopped or much slower LV). In normal driving, platoon LV events were very common but resulted in very few crashes per exposure. Young drivers were over-represented when they did occur. Onset of the hazardous event was when the LV decelerated, and drivers began braking roughly 3 to 5 seconds before impact. These results were consistent with the braking thresholds by naturalistic drivers in congested
Muttart, Jeffrey, Dinakar, Swaroop, Edewaard, Darlene
Correlation between Sensor Performance, Autonomy Performance and Fuel-Efficiency in Semi-Truck Platoons2021-01-006404/06/2021
Semi-trucks, specifically class-8 trucks, have recently become a platform of interest for autonomy systems. Platooning involves multiple trucks following each other in close proximity, with only the lead truck being manually driven and the rest being controlled autonomously. This approach to semi-truck autonomy is easily integrated on existing platforms, reduces delivery times, and reduces greenhouse gas emissions via fuel economy benefits. Level 1 SAE fuel studies were performed on class-8 trucks operating with the Auburn Cooperative Adaptive Cruise Control (CACC) system, and fuel savings up to 10-12% were seen. Enabling platooning autonomy required the use of radar, global positioning systems (GPS), and wireless vehicle-to-vehicle (V2V) communication. Poor measurements and state estimates can lead to incorrect or missing positioning data, which can lead to unnecessary dynamics and finally wasted fuel. This is especially an issue if deceleration is applied in response to a bad
Adam, Cristian, Lakshmanan, Sridhar, Richardson, Paul, Stegner, Evan, Ward, Jacob, Hoffman, Mark, Bevly, David M.
Engine On/Off Optimization for an xHEV during Charge Sustaining Operation on Real World Driving Routes Using Connectivity Data2021-01-043304/06/2021
This paper presents a methodology that optimizes the periods of engine operation on a selected route for a Plug-in Hybrid Electric Vehicle (PHEV) or Hybrid Electric Vehicle (HEV) using Connected Vehicle data to minimize energy consumption. The study was conducted using a Reduced-Order Powertrain model of second-generation Chevrolet Volt. The method utilizes the Backward Induction Dynamic Programming algorithm to come up with an optimal control mode matrix of engine operation along the selected route for various battery states of charge. The objective of this method is to make use of Vehicle Connectivity to minimize the energy utilization of an HEV by using the speed and elevation profile of a selected route transmitted to the vehicle via V2X communication systems. The study focuses on reducing the energy consumption of an xHEV (mostly calibrated for EPA Drive Cycles), on real world driving routes having undulating road profiles with varying speeds for which the vehicles have not been
Santhosh, Pruthwiraj, Robinette, Darrell
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