Your Selections

Wireless communication systems
Show Only

Collections

File Formats

Content Types

Dates

Sectors

Topics

Authors

Publishers

Affiliations

Committees

Events

Magazine

Series

   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Connected Vehicles – Ecosystem for Services in Car

Automotive Software-Prabha Baragur Venkataram
  • Technical Paper
  • 2019-28-2447
To be published on 2019-11-21 by SAE International in United States
This paper outlines the different aspects of the Connected Vehicle concept. The blocks required to implement a Connected Vehicle infrastructure is also discussed in detail. Two main types of short-range wireless communication are discussed in Connected Vehicles context namely Vehicle-to-Vehicle (V2V), and Vehicle-to-Infrastructure (V2I) communication. An overview of the evolution of the Connected Vehicle and its operational aspects are presented together with its application. The impacts and potential operational benefits of the Connected Vehicle are discussed. The various challenges to architect non functional requirements in the case of Connected Vehicle technology are identified and discussed.
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.
new

Handling of Data from Heterogeneity of Vehicular Devices through Inter-Networking

VIT Universtity-Gnanaprakasam Anuradha, Kalivaradhan Ramesh Babu
Vellore Institute of Technology-Chooriyaparambil Damodaran Naiju
Published 2019-10-11 by SAE International in United States
Collection of various data from sensed data or raw availability of data from transcript or interdependency of data from various sources is a tedious task in a real time scenario like an Indian context is considered. Planning to find a solution to collect the data from various vehicular devices about the information related to the pollution becomes a cumbersome job. The need of the data, under what time duration data has to be transmitted, how they are interconnected and whether data needs to be stored or how they are processed is a major question that arise when dealing with collecting data and internetworking with various vehicular devices. A study of two different types of approaches for internetworking between the devices is discussed. One related to real time setup of mobile application and other with the dynamic cluster approach when the nodes are moving in a region was considered. Eliminating the speed of the vehicle with the movement of human formation of cluster with the mobile application to identify the various devices in the vicinity was…
This content contains downloadable datasets
Annotation ability available
new

Terahertz Data Links Without Direct Line of Sight

  • Magazine Article
  • TBMG-35143
Published 2019-09-01 by Tech Briefs Media Group in United States

Today’s cellular networks and Wi-Fi systems rely on microwave radiation to carry data but the demand for more bandwidth is quickly becoming more than microwaves can handle. That has researchers thinking about transmitting data on higher-frequency terahertz waves, which have as much as 100 times the data-carrying capacity of microwaves. But terahertz communication technology is in its infancy — there is much basic research to be done and plenty of challenges to overcome.

new

How to Choose the Right Wireless Technology for Industrial Condition Monitoring

  • Magazine Article
  • TBMG-35194
Published 2019-09-01 by Tech Briefs Media Group in United States

Industries are constantly searching for new approaches to advance operational efficiency and product quality. With unplanned downtime estimated to cost manufacturers $50 billion each year, improving asset health and availability is a top priority.

   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Dedicated Short Range Communications (DSRC) Performance Requirements for V2V Safety Awareness™ ASN File

V2X Vehicular Applications Technical Committee
  • Ground Vehicle Standard
  • J2945/2A_201907
  • Current
Published 2019-07-01 by SAE International in United States

This Abstract Syntax Notation (ASN.1) File is the precise source code used for SAE International Standard J2945/2. As part of an international treaty, all US ITS standards are expressed in "ASN.1 syntax". ASN.1 Syntax is used to define the messages or "ASN specifications". Using the ASN.1 specification, a compiler tool produces the ASN library which will then be used to produce encodings (The J2945/2 message set uses UPER encoding). The library is a set of many separate files that collectively implement the encoding and decoding of the standard. The library is then used by any application (along with the additional logic of that application) to manage the messages. The chosen ASN tool is used to produce a new copy of the library when changes are made, and it is then linked to the final application being developed. The ASN library manages many of the details associated with ASN syntax, allowing for subtle manipulation to make the best advantage of the encoding style.

Programming Light on a Chip

  • Magazine Article
  • TBMG-34606
Published 2019-06-01 by Tech Briefs Media Group in United States

Microwave signals are ubiquitous in wireless communications but interact too weakly with photons. A technique was developed to fabricate high-performance optical microstructures using lithium niobate, a material with powerful electro-optic properties. The new integrated photonics platform can store light and electrically control its frequency (or color) in an integrated circuit. The platform draws inspiration from atomic systems and could have a wide range of applications including photonic quantum information processing, optical signal processing, and microwave photonics.

Monitor Babies in the NICU Without Wires

  • Magazine Article
  • TBMG-34581
Published 2019-06-01 by Tech Briefs Media Group in United States

An interdisciplinary Northwestern University team has developed a pair of soft, flexible wireless sensors that replace the tangle of wire-based sensors that currently monitor babies in hospitals’ neonatal intensive care units (NICU) and pose a barrier to parent-baby cuddling and physical bonding. The lead researcher was John A. Rogers, a bioelectronics pioneer, who led the technology development. The team recently completed a series of first human studies on premature babies at Prentice Women’s Hospital and Ann & Robert H. Lurie Children’s Hospital of Chicago. The researchers concluded that the wireless sensors provided data as precise and accurate as that from traditional monitoring systems. The wireless patches also are gentler on a newborn’s fragile skin and allow for more skin-to-skin contact with the parent. Existing sensors must be attached with adhesives that can scar and blister premature newborns’ skin. The study, involved materials scientists, engineers, dermatologists, and pediatricians. It includes initial data from more than 20 babies who wore the wireless sensors alongside traditional monitoring systems, so the researchers could do a side-by-side, quantitative comparison. Since then, the team has conducted successful tests with more than 70 babies in the NICU.

   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

JAUS / SDP Transport Specification

AS-4JAUS Joint Architecture for Unmanned Systems Committee
  • Aerospace Standard
  • AS5669A
  • Current
Published 2019-04-22 by SAE International in United States
This SAE Aerospace Standard (AS) specifies a data communications layer for the transport of messages defined by the Joint Architecture for Unmanned Systems (JAUS) or other Software Defined Protocols (SDP). This Transport Specification defines the formats and protocols used for communication between compliant entities for all supported link-layer protocols and media. Although JAUS is the SDP used as the example implemented throughout this document, AS5669 can be used for any SDP that meets the required capabilities. A Software Defined Protocol is defined as an application data interface for communicating between software elements. The SDP is agnostic of the underlying communications protocol and in fact communicates in much the same manner regardless if the communicating entities are collocated in the same memory space or separated by a satellite link.
This content contains downloadable datasets
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Comparative Analysis of Power Pad for Wireless Charging of Electric Vehicles

Aligarh Muslim University-Aqueel Ahmad, Mohammad Saad Alam
Florida International University-Ahmed Mohamed
Published 2019-04-02 by SAE International in United States
Wireless charging of Electric Vehicle adhere the mutual induction to transmit power to the battery and eliminates need of wire and physical connection. Power pad design, frequency of power transfer, distance between transfer coils and alignment of transfer coils are critical challenges of EV wireless charging. Power pad design entails optimization of coil shape and size, core shape, and material of coil and core along with economic analysis. The manuscript compares the already available coil shapes, with the introduction of ferrite core across the coils to design an extremely efficient power pad for the wireless charging of EV. A 3D finite element method (FEA) is being used for analysis, due to the unconventional distribution of the flux. Only three types of coils, D, DD, and DDQ, are taken to analyze the effect of magnetic ferrite core. The comparison is made based on simulation results, magnetic flux pattern as well as data imported from the results. Ansys 3D Maxwell simulation software is used to simulate the magnetic pattern of the power pad coils. Finally, the results…
This content contains downloadable datasets
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Antenna Design Methodology for Remote Keyless Entry: The Effects of the Human Body and Vehicular Antenna Positions on Coverage

Altair Engineering-Dipen Kumar Das, Aseim Elfrgani
Published 2019-04-02 by SAE International in United States
In this era of technologies, Remote Keyless Entry (RKE) system has become an integral part of motor vehicles. Over the years, a lot of functionalities have been added to RKE systems. To achieve functional communication between key-fob antennas and vehicular receiving antennas, it is necessary to analyze the impact of a human body as well as the receiving antenna placements on the vehicle’s body. Taking these variations into account during the antenna development phase becomes expensive and tedious since achieving an efficient design would require several iterations, testing, and modification, in the design. Hence, Computational Electromagnetic (CEM) techniques become a feasible solution to explore such scenarios and adopt necessary modifications as needed. This paper introduces a methodological process of designing RKE antennas using 3D CEM Simulation tool; namely Altair Feko. Moreover, the presented methodology includes an analysis of variations of remote keyless entry system’s radiation characteristics while placed in the vicinity of the human body. The effects of the vehicular receiving antenna position on the RKE system’s coverage are also investigated and analyzed. This paper…
Annotation ability available