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AR projection for driver assistance in autonomous vehicles

Automotive Accessories-Nalinikanth Yerram, Balasubramanian Achuthan
Embedded Systems Software & Security-Srinivas Chandupatla
  • Technical Paper
  • 2020-01-1035
To be published on 2020-04-14 by SAE International in United States
Augmented Reality (AR), which involves the integration of digital information with our physical environment in real-time, has been steadily growing over the past few years, finding its way into multiple areas of our lives. Augmented Reality (AR) in automotive vehicles has contributed to revolutionizing the way passengers and drivers access information, acquire knowledge and integrate into the physical spaces and destinations visited. The studies produced concerning this field are still limited, particularly in the perception of how users adopt technology and what use they make of it. On the other hand, even more limited are the studies that consider the role of stakeholders in the implementation of AR technology. In this paper, we discuss and propose solutions for following ADAS applications using projection unit mounted on board projecting on the windshield. • 5G in your route (signal strength - android applications on HU to detect the signal strength and display it on projection unit)). 5G connectivity help to realize the future of connected cars through higher speeds (up to 10 Gbps), better coverage (capacity expansion…
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Comparison of EVSE Charge Management Systems for Limited Electrical Infrastructure

Sacramento Municipal Utility District-Dwight MacCurdy, Carol D. Kay, Karun Kumar, Deepak J. Aswani
  • Technical Paper
  • 2020-01-0532
To be published on 2020-04-14 by SAE International in United States
The installed cost of EV charging stations can vary widely depending on site specific conditions and the number and type of EV charging stations (EVSE) to be installed. The cost can exceed $10,000 per EVSE if panel or switch gear upgrades are needed or if trenching is required. These infrastructure costs can pose a significant barrier to EV adoption for fleet operators or for employers who wish to provide EV charging for employees. Smart EVSE can play a role in managing the infrastructure and installation cost of EVSE. Such products can enable charging when there are limitations in electrical capacity. Three types of smart EVSE are tested and compared: 1) fully autonomous/local control, 2) networked/cloud managed control, and 3) a hybrid of local and cloud managed control.
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Electric Vehicle Power Transfer System Using Conductive Automated Connection Devices

Hybrid - EV Committee
  • Ground Vehicle Standard
  • J3105_202001
  • Current
Published 2020-01-20 by SAE International in United States
This document covers the general physical, electrical, functional, testing, and performance requirements for conductive power transfer, primarily for vehicles using a conductive ACD connection capable of transferring DC power. It defines conductive power transfer methods, including the infrastructure electrical contact interface, the vehicle connection interface, the electrical characteristics of the DC supply, and the communication system. It also covers the functional and dimensional requirements for the vehicle connection interface and supply equipment interface. There are also sub-documents which are identified by a SAE J3105/1, SAE J3105/2, and SAE J3105/3. These will be specific requirements for a specific interface defined in the sub-document. SAE J3105: Main document, including most requirements. ○ SAE J3105/1: Infrastructure-Mounted Cross Rail Connection ○ SAE J3105/2: Vehicle-Mounted Pantograph Connection ○ SAE J3105/3: Enclosed Pin and Socket Connection
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Innovative Fluid Allowing a New and Efficient Battery Thermal Management

TOTAL Marketing Services-Jonathan RAISIN, Nicolas CHAMPAGNE
  • Technical Paper
  • 2019-01-2259
Published 2019-12-19 by SAE International in United States
With the increasing availability of fast charging stations across the globe, tighter and tighter constraints are placed on electric vehicles batteries. In order to handle the thermal stresses induced during fast charging, the improvement of the existing battery thermal management systems has become key. This article presents an innovative thermal management system for batteries. The system consists of circulating a newly developed highly advanced dielectric fluid in direct contact with the electrochemical cells of the battery pack. Experiments on our dedicated bench test and numerical simulations are reported here demonstrating the performance of this system with fluids, i.e. its ability to efficiently regulate the temperature of the battery cells even under fast charging conditions and low flow rates. Consequently, this thermal management strategy could be implemented within the next generation of battery electric vehicle (BEV) using conventional pumping systems and lead to an improved battery lifetime and therefore a lower total cost of BEV ownership.
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Narrower focus, BIGGER PAYOFF

SAE Truck & Off-Highway Engineering: December 2019

Terry Costlow
  • Magazine Article
  • 19TOFHP12_03
Published 2019-12-01 by SAE International in United States

Design teams are targeting focused markets for their commercial electric-vehicle programs to combat challenges like range and infrastructure.

Government regulations are prompting a changeover to electric powertrains, with early growth coming in commercial vehicle applications where range and recharging are more easily managed. Greater expansion will require revisions in maintenance and broader availability of charging stations as well as improved driving ranges.

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GM underway with plan to build U.S. electric-vehicle charging infrastructure

Automotive Engineering: September 2019

Bill Visnic
  • Magazine Article
  • 19AUTP09_10
Published 2019-09-01 by SAE International in United States

Tesla has its coveted Supercharger network of high-voltage fast chargers, but despite a widely-discussed goal of contributing to a future with zero vehicle emissions, Mike Abelson, General Motors' vice president of EV infrastructure, admitted at the 2019 CAR Management Briefing Seminars conference that his company doesn't “wish to spend our capital to build (DC) fast chargers-we wish to spend our capital to build more electric vehicles.”

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Use Cases for Communication Between Plug-in Vehicles and the Utility Grid

Hybrid - EV Committee
  • Ground Vehicle Standard
  • J2836/1_201907
  • Current
Published 2019-07-15 by SAE International in United States
This SAE Information Report establishes Use Cases for communication between plug-in electric vehicles (PEVs) and the electric power grid, for energy transfer and other applications.
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Connectivity Solutions for AVs

Autonomous Vehicle Engineering: July 2019

Chris Borroni-Bird
  • Magazine Article
  • 19AVEP07_04
Published 2019-07-01 by SAE International in United States

The promises of fully connected autonomous vehicles are great, but so are the challenges.

The synergies between electrification, connectivity and automation in future vehicles are creating new business models and causing developments in each to be accelerated. EVs, for example, need connectivity to assist with finding charging stations and autonomous vehicles (AVs) require significant levels of electric power to support their compute demands. But perhaps the greatest synergy lies between connectivity and autonomy.

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Robot-Based Fast Charging of Electric Vehicles

Graz University of Technology-Bernhard Walzel, Mario Hirz, Helmut Brunner
representing BMW Group-Nico Kreutzer
Published 2019-04-02 by SAE International in United States
Automated, conductive charging systems enable both, the transmission of high charging power for long electric driving distances as well as comfortable and safe charging processes. Especially by the use of heavy and unhandy cables for fast charging, these systems offer user friendly vehicle charging - in particularly in combination with autonomously driving and parking vehicles. This paper deals with the definition of requirements for automated conductive charging stations with standard charging connectors and vehicle inlets and the development of a fully-automated charging robot for electric and plug-in hybrid vehicles.In cooperation with the project partners BMW AG, MAGNA Steyr Engineering, KEBA AG and the Institute of Automotive Engineering at Graz University of Technology, the development and implementation of the prototype took place in the course of a governmental funded research project titled “Comfortable Mobility by Technology Integration (KoMoT)”. The charging system basic design and experiments on sensor technologies were carried out as part of contract research commissioned by the Austrian Society of Automotive Engineers (ÖVK).In the present approach, the entire docking and undocking process of the…
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Design of a Grid-Friendly DC Fast Charge Station with Second Life Batteries

Ohio State University-Matilde D'Arpino, Massimo Cancian
Published 2019-04-02 by SAE International in United States
DC-fast charge (DCFC) may be amenable for widespread EV adoption. However, there are potential challenges associated with implementation and operation of the DCFC infrastructures. The integration of energy storage systems can limit the scale of grid installation required for DCFC and enable more efficient grid energy usage. In addition, second-life batteries (SLBs) can find application in DCFC, significantly reducing installation cost when compared to solutions based on new battery packs. However, both system architecture and control strategy require optimization to ensure an optimal use of SLBs, including degradation and thermal aspects. This study proposes an application of automotive SLBs for DCFC stations where high power grid connection is not available or feasible. Several SLBs are connected to the grid by means of low power chargers (e.g. L2 charging station), and a DC/DC converter controls the power to the EV power dispenser. The architecture of the DC bus, the size and state of health of the battery system determine efficiency, cost, and reliability of the station. A technical and economic comparison is proposed, evaluating solutions with…
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