Browse Topic: Communication systems

Items (1,447)

SIMULATION FOR VEHICLE-TO-VEHICLE AND VEHICLE-TO-GRID RESOURCE SHARING ANALYSIS

2024-01-3444

11/15/2024

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 Communication

2024-26-008201/16/2024

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 System

2024-26-018401/16/2024

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 Domain

2024-26-034901/16/2024

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 Station

2024-26-011201/16/2024

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 Conditions

10-07-01-000510/13/2022

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 System

2022-01-507210/03/2022

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) Subcommittee

WC-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 Survey

12-06-02-001108/17/2022

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 Applications

12-06-02-001008/05/2022

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

Real-Sim Interface: Enabling Multi-resolution Simulation and X-in-the-Loop Development for Connected and Automated Vehicles

12-05-04-002606/27/2022

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

Toward an Automated Scenario-Based X-in-the-Loop Testing Framework for Connected and Automated Vehicles

12-05-04-003006/27/2022

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

A hybrid sensor-fusion system to locate the Electric gridlines by UAV for range extension in Urban areas

2022-26-114905/26/2022

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

jsintz e2e test 5/9

SAE-PP-0131805/09/2022

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SintzUSER, Jeneane

e2e test 5/9

SAE-PP-0131605/09/2022

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Rickard, Christopher, SintzUSER, Jeneane

Wireless Smart Contact Lenses Detect Disease

TBMG-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.

A Novel Vehicle-to-Vehicle Fast Charging Control System Utilizing Motor and Inverter in EV

2022-01-019403/29/2022

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

The Effects of Measurement Uncertainty and Error on Operational Safety Assessment (OSA) Metrics

2022-01-098503/29/2022

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

Functional verification and validation of secure controller area network (CAN) communication

2022-01-011803/29/2022

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 Safety Application for Pedestrians Utilizing P2V Communication Over Bluetooth

2022-01-017603/29/2022

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 Matching

2022-01-013203/29/2022

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

Demonstration of energy consumption reduction in class 8 trucks using eco-driving algorithm based on on-road testing

2022-01-015703/29/2022

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

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

Green Light Optimized Speed Advisory with Traffic Preview

2022-01-017403/29/2022

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

Computer Vision-Based V2X Collaborative Perception

2022-01-008203/29/2022

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

Quantifying System Level Impact of Connected and Automated Vehicles in an Urban Corridor

2022-01-017303/29/2022

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

Mechanism to Identify a Legitimate Vehicle User in Remote Keyless Entry System

2022-01-013703/29/2022

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 System

2022-01-011603/29/2022

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

Mobile control-measuring system for determination and providing vehicles brake performance

2022-01-110003/29/2022

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

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-Transmission

SAE-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 Download

SAE-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 Challenges

TBMG-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 Communications

TBMG-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 Lasers

TBMG-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 System

TBMG-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 Testing

21AERP08_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 Sensors

TBMG-3958608/01/2021

Taxonomy and Definitions for Terms Related to Driving Automation Systems for On-Road Motor Vehicles

J3016_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 Vehicles

J3016_202104-TEST-REC (Historical)04/30/2021

On-Road Automated Driving (ORAD) committee

Arrangement and Control Method of Cooperative Vehicle Platoon

2021-01-0113

04/06/2021

With the development of cellular communication technology and for the sake of reducing drag resistance, the multi-lane platoon technology will be more prosperous in the future. In this article, the cooperative vehicle platoon method on the public road is represented. The method’s architecture is mainly composed of the following parts: decision-making, path planning and control command generation. The decision-making uses the finite state machine to make decision and judgment on the cooperative lane change of vehicles, and starts to execute the lane change step when the lane change requirements are met. In terms of path planning, with the goal of ensuring comfort, the continuity of the vehicle state and no collision between vehicles, a fifth-order polynomial is used to fit every vehicle trajectory. In terms of control command generation module, a model predictive control algorithm is used to solve the multi-vehicle centralized optimization control problem. We use the two DOF vehicle