Difference between revisions of "ITS"
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http://www.digikey.com/us/en/techzone/wireless/resources/articles/low-frequency-rfic-solutions.html |
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A tire-pressure-monitoring system (TPMS) provides early warning of abnormal tire pressure or failure. Used separately or in conjunction with other vehicle electronic systems, a TPMS serves an essential role for passenger safety, vehicle handling, and tire lifetime. At the heart of most TPMS designs, RF devices serve a fundamental function in communicating tire pressure data used by vehicle safety systems to alert drivers. For building integrated, standalone, and add-on TPMS devices, engineers can take advantage of available devices from manufacturers including Atmel, Maxim Integrated Products, Silicon Laboratories, and Texas Instruments, among others. |
Abstract — A tire-pressure-monitoring system (TPMS) provides early warning of abnormal tire pressure or failure. Used separately or in conjunction with other vehicle electronic systems, a TPMS serves an essential role for passenger safety, vehicle handling, and tire lifetime. At the heart of most TPMS designs, RF devices serve a fundamental function in communicating tire pressure data used by vehicle safety systems to alert drivers. For building integrated, standalone, and add-on TPMS devices, engineers can take advantage of available devices from manufacturers including Atmel, Maxim Integrated Products, Silicon Laboratories, and Texas Instruments, among others. |
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TPMS systems function directly by monitoring tire pressure or indirectly by using the vehicle's anti-lock system to detect changes in rotational speed associated with the decreased radius of a deflated tire. Direct methods (the subject of this article) rely on low-frequency RF devices to transmit tire pressure measurements to vehicle safety management systems. |
TPMS systems function directly by monitoring tire pressure or indirectly by using the vehicle's anti-lock system to detect changes in rotational speed associated with the decreased radius of a deflated tire. Direct methods (the subject of this article) rely on low-frequency RF devices to transmit tire pressure measurements to vehicle safety management systems. |
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Abstract — Wireless communications are nowadays considered as enablers of innovation in the field of smart mobility in smart cities. In this work, we focus on the smart navigation service, which is aimed at providing drivers with the best route to destination taking into account real time traffic conditions. Smart navigation is increasingly used today and expected to reduce traffic congestions, but the real impact on travel time and the cost in terms of wireless network resources are still open issues. These aspects are here discussed starting from the objectives and the outputs of the Italian project PEGASUS. More specifically, to what extent this application can reduce the travel duration and how frequently traffic information must be updated will be firstly discussed; then, the impact on wireless networks of both the uplink collection of traffic information and the downlink transmission to vehicles is shown, focusing on the UMTS cellular technology; finally, the use of short range IEEE 802.11p wireless communications technology is investigated to offload cellular networks. Through simulations performed in a dense urban scenario, it is shown that 30% to 50% travel time can be saved, that the needed information exchange might reduce the cellular network capacity available for other services of 20% or more, and that the deployment of few road side units and multi-hop transmissions can be effectively used to offload cellular networks. |
Abstract — Wireless communications are nowadays considered as enablers of innovation in the field of smart mobility in smart cities. In this work, we focus on the smart navigation service, which is aimed at providing drivers with the best route to destination taking into account real time traffic conditions. Smart navigation is increasingly used today and expected to reduce traffic congestions, but the real impact on travel time and the cost in terms of wireless network resources are still open issues. These aspects are here discussed starting from the objectives and the outputs of the Italian project PEGASUS. More specifically, to what extent this application can reduce the travel duration and how frequently traffic information must be updated will be firstly discussed; then, the impact on wireless networks of both the uplink collection of traffic information and the downlink transmission to vehicles is shown, focusing on the UMTS cellular technology; finally, the use of short range IEEE 802.11p wireless communications technology is investigated to offload cellular networks. Through simulations performed in a dense urban scenario, it is shown that 30% to 50% travel time can be saved, that the needed information exchange might reduce the cellular network capacity available for other services of 20% or more, and that the deployment of few road side units and multi-hop transmissions can be effectively used to offload cellular networks. |
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'''COLOMBO: Investigating the Potential of V2X for Traffic Management Purposes assuming low penetration Rates''': |
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http://elib.dlr.de/83217/1/paper_200_1366355375.pdf |
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Abstract — After the Vehicular Communication (V2X) technology roll out in 2015, the number of equipped vehicles is assumed to increase slowly. While many Day One V2X applications are related to traffic safety and require a high penetration rate and communication reliability, traffic management applications could still benefit from even few equipped vehicles. Considering |
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local V2X-based traffic surveillance based on a low rate of V2X technology, traffic light control could dynamically adapt priorities depending on traffic flows and volumes. In order to mitigate the low rate of V2X technology, already deployed solutions for wireless ad-hoc communications, such as WiFi-direct, available on most smartphones (often on-board of regular vehicles), should be investigated and exploited as complementary source of information, with full awareness of their strong reliability and performance limitations. The COLOMBO project, which is co-funded by the European Commission and presented within |
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this report, focuses on such use of information either from a small subset of V2X-equipped vehicles only, or complementary to |
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other wireless ad-hoc technologies and tries to exploit this information for traffic surveillance and an adaptive, optimized control of traffic lights. |
|||
Revision as of 11:19, 30 July 2013
Tēma: Inteliģentās (viedās) transporta sistēmas
Literatūra
Next Generation Wired Intra-Vehicle Networks, A Review:
http://cvrr.ucsd.edu/publications/2013/ShaneTrivedi_IV13.pdf
Abstract — Automotive electronics is a rapidly expanding area with an increasing number of driver assistance and infotainment devices becoming standard in new vehicles. A review of current networking standards within vehicles reveals a fragmented and proprietary situation with several standards such as MOST, CAN and LVDS dominating, all of which are currently being used by various vehicle manufacturers. Due to the cost of employing a range of networking standards, there is a general desire within the automotive industry to converge on the use of the 802.3 Ethernet for all in-vehicle communication between devices. The introduction of in-vehicle cameras to provide driver assistance applications and the associated high bandwidth requirements of multi camera sys- tems has accelerated the demand for a unifying automotive network architecture. This paper presents an overview of current research present in the literature and identifies trends in the field for the future.
Low-Frequency RFIC Solutions for Tire-Pressure-Monitoring Systems:
http://www.digikey.com/us/en/techzone/wireless/resources/articles/low-frequency-rfic-solutions.html
Abstract — A tire-pressure-monitoring system (TPMS) provides early warning of abnormal tire pressure or failure. Used separately or in conjunction with other vehicle electronic systems, a TPMS serves an essential role for passenger safety, vehicle handling, and tire lifetime. At the heart of most TPMS designs, RF devices serve a fundamental function in communicating tire pressure data used by vehicle safety systems to alert drivers. For building integrated, standalone, and add-on TPMS devices, engineers can take advantage of available devices from manufacturers including Atmel, Maxim Integrated Products, Silicon Laboratories, and Texas Instruments, among others.
TPMS systems function directly by monitoring tire pressure or indirectly by using the vehicle's anti-lock system to detect changes in rotational speed associated with the decreased radius of a deflated tire. Direct methods (the subject of this article) rely on low-frequency RF devices to transmit tire pressure measurements to vehicle safety management systems.
A Survey on Intelligent Transportation Systems:
http://www.idosi.org/mejsr/mejsr15%285%2913/4.pdf
Abstract — Transportation or transport sector is a legal source to take or carry things from one place to another. With the passage of time, transportation faces many issues like high accidents rate, traffic congestion, traffic & carbon emissions air pollution, etc. In some cases, transportation sector faced alleviating the brutality of crash related injuries in accident. Due to such complexity, researchers integrate virtual technologies with transportation which known as Intelligent Transport System. The idea of virtual technologies integration is a novel in transportation field and it plays a vital part to overcome the issues in global world. This paper tackles the great variety of Intelligent Transport System applications, technologies and its different areas. The objective of this literature review is to integrate and synthesize some areas and applications, technologies discuss with all prospects. Furthermore, this research focuses on a wide field named Intelligent Transport Systems, discussed its wide applications, used technologies and its usage in different areas respectively.
Securely connecting Electric Vehicles to the Smart Grid:
Abstract — Rechargeable electric vehicles are receiving increasing attention from different stakeholders: from customers as gas prices are constantly rising, from car manufacturers to address customer, market, and environmental demands, and also from electric energy utilities for integrating them into smart electric grids. While in the first step, the emphasis is placed on electric vehicles as energy consumers, using their battery for storing energy and feeding it back to the energy network will be the consequent next step. Batteries of electric vehicles will realize a distributed energy electric storage for stabilizing the electric power grid. Thus the electric vehicle will participate as a mobile energy node within the smart grid having two types of interfaces, one for electricity and one for data communication for charging and feedback control, information exchange, and for billing. Since IT security in the smart grid is already considered as a major point to be addressed, the enhancement of the smart grid with electric mobility has to address IT security as well. This article describes example interactions of electric vehicles with the charging infrastructure and it shows which security requirements have to be fulfilled in important use cases. Moreover, security considerations of current standardization activities ISO/IEC and SAE are described.
Smart Navigation in Intelligent Transportation Systems: Service Performance and impact on Wireless Networks:
http://www.thinkmind.org/download.php?articleid=tele_v6_n12_2013_6
Abstract — Wireless communications are nowadays considered as enablers of innovation in the field of smart mobility in smart cities. In this work, we focus on the smart navigation service, which is aimed at providing drivers with the best route to destination taking into account real time traffic conditions. Smart navigation is increasingly used today and expected to reduce traffic congestions, but the real impact on travel time and the cost in terms of wireless network resources are still open issues. These aspects are here discussed starting from the objectives and the outputs of the Italian project PEGASUS. More specifically, to what extent this application can reduce the travel duration and how frequently traffic information must be updated will be firstly discussed; then, the impact on wireless networks of both the uplink collection of traffic information and the downlink transmission to vehicles is shown, focusing on the UMTS cellular technology; finally, the use of short range IEEE 802.11p wireless communications technology is investigated to offload cellular networks. Through simulations performed in a dense urban scenario, it is shown that 30% to 50% travel time can be saved, that the needed information exchange might reduce the cellular network capacity available for other services of 20% or more, and that the deployment of few road side units and multi-hop transmissions can be effectively used to offload cellular networks.
COLOMBO: Investigating the Potential of V2X for Traffic Management Purposes assuming low penetration Rates:
http://elib.dlr.de/83217/1/paper_200_1366355375.pdf
Abstract — After the Vehicular Communication (V2X) technology roll out in 2015, the number of equipped vehicles is assumed to increase slowly. While many Day One V2X applications are related to traffic safety and require a high penetration rate and communication reliability, traffic management applications could still benefit from even few equipped vehicles. Considering local V2X-based traffic surveillance based on a low rate of V2X technology, traffic light control could dynamically adapt priorities depending on traffic flows and volumes. In order to mitigate the low rate of V2X technology, already deployed solutions for wireless ad-hoc communications, such as WiFi-direct, available on most smartphones (often on-board of regular vehicles), should be investigated and exploited as complementary source of information, with full awareness of their strong reliability and performance limitations. The COLOMBO project, which is co-funded by the European Commission and presented within this report, focuses on such use of information either from a small subset of V2X-equipped vehicles only, or complementary to other wireless ad-hoc technologies and tries to exploit this information for traffic surveillance and an adaptive, optimized control of traffic lights.
