• Title/Summary/Keyword: 차량 안전 통신

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A Relay Node Selection Method of Vehicle Safety Messages for Protecting Traffic Accidents (교통사고 예방을 위한 차량안전메시지 중계노드 선택방법)

  • Yu Suk-Dea;Lee Moon-Kun;Cho Gi-Hwan
    • Journal of the Institute of Electronics Engineers of Korea TC
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    • v.43 no.9 s.351
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    • pp.60-68
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    • 2006
  • Using the wireless communication among unacquainted vehicles, an intelligent vehicle safety system can be constructed to exchange vehicle safety-related information, such as urgency stop, traffic accident and road obstacles. In the majority of vehicle safety applications, vehicle safety messages are propagated in the form of broadcast. However, this approach causes some effectiveness and performance problems with massive radio collision, multi-hop propagation. This paper presents a priority based relay node selection method for propagating vehicle safety messages of traffic accident protection system. With this method, vehicle safety messages are relayed by a node that locates in proper distance out of the nodes that are included in the radio transmission range. By decreasing the number of duplicated messages, the packet overhead is lessened while the communication performance is raised. The proposed method was proven to be better than other schemes through network simulations.

Safety Message Transmission Technology for the Elderly Pedestrians at the Conflict Area: Background and Technology Concept (상충지역에서 고령 보행자를 위한 안전메시지 전송기술 : 배경 및 기술 개념)

  • Cho, Woong;Jang, Jeong-Ah
    • The Journal of the Korea institute of electronic communication sciences
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    • v.10 no.3
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    • pp.413-418
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    • 2015
  • As the elderly are increasing, traffic accidents which are related to the elderly are one of major issues in aged society. In this paper, we analyze traffic accident statistics for the elderly. Based on the analyzed data, safety message transmission system for the elderly pedestrians is introduced. The proposed system is based on the P2V(Pedestrian-to-Vehicle) communication which combines ICT(Information and Communication Technology) with vehicles and pedestrians. We introduce the concept and principle of the proposed system and discuss implementation issues for realizing the proposed system.

A TDMA-based MAC protocol in hybrid-vehicular communication systems for preventing a chain-reaction collision on a highway (하이브리드 차량 통신 시스템에서 연쇄 추돌 사고 방지를 위한 TDMA 기반 MAC 프로토콜)

  • Oh, Sang-Yeob
    • Journal of Digital Convergence
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    • v.10 no.8
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    • pp.179-184
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    • 2012
  • A car accident on a highway occurs a chain-reaction collision because of a vehicle's fast velocity. In order to prevent it, the accident vehicle should broadcast a safe message to its neighbors. If there are many neighbor nodes, a frame collision probability is high. To solve this, it was proposed for a system as a previous study to send a safe message without frame-collision using separating channels. However, the separation of multiple channels make feasibility low because of increasing hardware's development cost and complexity. In this paper, we proposes a TDMA-based MAC protocol using a single channel. As a result, we show the frame reception success rate of our protocol was almost the same as the previous protocol.

An Analysis on the Prevention Effects of Forward and Chain Collision based on Vehicle-to-Vehicle Communication (차량 간 통신 기반 전방추돌 및 연쇄추돌 방지 효과 분석)

  • Jung, Sung-Dae;Kim, Tae-Oh;Lee, Sang-Sun
    • The Journal of The Korea Institute of Intelligent Transport Systems
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    • v.10 no.4
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    • pp.36-43
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    • 2011
  • The forward collision of vehicles in high speed can cause a chain collisions and high fatality rate. Most of the forward collisions are caused by insufficient braking distance due to detection time of driver and safe distance. Also, accumulated detection time of driver is cause of chain collisions after the forward collision. The FVCWS prevents the forward collision by maintaining the safety distance inter-vehicle and reducing detection time of driver. However the FVCWS can cause chain collisions because the system that interacts only forward vehicle has accumulated detection time of driver. In this paper, we analyze forward and chain collisions of normal vehicles and FVCWS vehicles on static traveling scenario. And then, we analyze and compare V2V based FVCWS with them after explaining the system. The V2V FVCWS reduces detection time of driver alike FVCWS as well as remove accumulated detection time of driver by broadcasting emergence message to backward vehicles at the same time. Therefore, the system decrease possibility of forward and chain collisions. All backward normal vehicles and 3~4 backward FVCWS vehicles have possibility of forward and chain collisions in result of analysis. However V2V FVCWS vehicles almost do not chain collisions in the result.

Cluster Management Scheme for Safety Message Dissemination in a VANET Environment (VANET 환경에서 안전 메시지 배포를 위한 클러스터 관리 기법)

  • Pyun, Do-Woong;Lim, Jongtae;Bok, Kyoung-Soo;Yoo, Jae-Soo
    • The Journal of the Korea Contents Association
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    • v.22 no.5
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    • pp.26-36
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    • 2022
  • Recently, studies have been conducted to cluster vehicles and disseminate safety messages in a VANET environment for driver safety and smoothy traffic. This paper proposes cluster management scheme for safety message dissemination through V2V communication and V2I communication in a VANET environment with high vehicle density and mobility. The proposed scheme reduces packet loss by selecting CH considering reception quality, total data owned by vehicles, moving speed, and connected vehicles, and maintaining cluster head candidates, which are the main agents of message dissemination, considering frequent cluster departures and subscriptions. In addition, the proposed scheme reduces duplicate messages by utilizing clusters by collaborating with a Road side unit(RSU). To prove the excellence of the proposed scheme, various performance evaluations are performed in terms of message packet loss and the number of RSU processing requests. As a result of performance evaluation, the cluster management scheme proposed in this paper shows better performance than the existing scheme.

Development of Collision Prevention Usage Scenario based on Vehicle-to-Vehicle Communication of Autonomous Vehicles (자율주행 차량의 차량 대 차량 통신에 기반한 충돌방지 활용 시나리오 개발)

  • Seo, HyunDuk;Kwon, Doyoung;Shin, Jaemin;Choi, Eunhyuk;Lim, Huhnkuk
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.26 no.2
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    • pp.251-257
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    • 2022
  • Self-driving vehicles are a type of smart vehicle with the help of ICT technology, which means a vehicle that operates without the intervention of a driver.Vehicles with vehicle safety communication technology (V2X) applied use information detected from various sensors or other vehicles/infrastructures to enable the smart vehicle to accurately and quickly predict the driver's potential danger situation, contributing to more stable autonomous driving. In this paper, among V2X communication technologies, a vehicle-to-vehicle communication (V2V) simulation communication technology is used to present a scenario for preventing collisions in autonomous vehicles. A vehicle collision prevention system based on V2V simulated communication was implemented and the suggested collision prevention application scenario was demonstrated. The suggested collision prevention utilization scenario can be considered as one application case of V2V communication technologies that are currently being developed/applied.

차량네트워크를 위한 프라이버시 보장인증 기술동향분석

  • Yu, Young-Jun;Kim, Yun-Gyu;Kim, Bum-Han;Lee, Dong-Hoon
    • Review of KIISC
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    • v.19 no.4
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    • pp.11-20
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    • 2009
  • 차량네트워크(VANET)는 이동형 에드 혹 네트워크의 가장 유망한 응용환경으로 인식되어 지고 있다. 특히, 차량간의 안전주행 통신인 V2V의 경우 운전자의 안전을 위한 통신기술로 주목받고 있다. 안전주행을 위해서 V2V에서 송수신되는 메시지는 다양한 네트워크 공격을 막기 위해서 반드시 인증이 되어야 하는 반면 운전자의 위치 프라이버시를 보호하기 위해서는 익명성이 보장되어야 한다. 이러한 보안 속성은 V2V 통신만의 고유한 성질로써, 현재 인증과 프라이버시를 동시에 보장하기 위한 인증기술에 대한 연구가 활발히 진행되고 있다. 본 고에서는 프라이버시를 보장하는 V2V 인증 프로트콜들을 분석하고 보안 및 효율성 관점에서 각 프로트콜을 비교분석한다.

Design and Implementation of 4SM(4-Sided Mirror) System based on Car PC for Enhancing Driver's Visibility (운전자 시야 개선을 위한 차량용 PC 기반 4SM(4-Sided Mirror) 시스템 설계 및 구현)

  • Yu, Young-Ho;Jang, Si-Woong
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2011.05a
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    • pp.152-156
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    • 2011
  • AVM(Around View Monitoring) 시스템은 차량 주변에 대한 영상을 운전자에게 제공함으로써 안전 운전을 도와주는 시스템이다. 측면 거울이나 실내 거울을 통해서 볼 수 없는 사각 지대는 운전자의 안전 운행에 위협이 된다. 사각지대는 특히 후진 주행, 주차, 좁은 골목길 주행, 굽은 길 회전 등에서 차량 파손 및 인사 사고의 원인이 된다. 이러한 위험을 피하기 위해 후방의 장애물을 감지하는 후방 센서나 후방 카메라 등과 같은 운전자의 시야를 개선하는 ECU들이 개발되어 사용되고 있다. 이러한 ECU들의 도움을 받더라도 차량의 전, 후, 좌, 우 사방의 상황을 동시에 볼 수 없기 때문에 사고를 피하기 위해 운전자들은 주의를 기울여 운전해야 한다. 본 논문에서는 운전자의 안전 운행을 돕기 위해 차량 주변 영상을 실시간으로 제공하는 4SM 시스템을 설계하고 구현한다. 본 논문에서 제안하는 4SM 시스템은 차량의 전, 후, 좌, 우에 장착된 4대의 카메라로부터 입력된 영상을 통합하여 Bird's Eye View 영상을 운전자가 한 눈에 차량 주변 상황을 인식할 수 있도록 한다.

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A implement of vehicle Blackbox system with OBD and MOST network (OBD와 MOST 네트워크를 이용한 차량용 블랙박스 시스템 설계)

  • Baek, Sung-Hyun;Jang, Jong-Wook
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2010.10a
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    • pp.66-69
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    • 2010
  • Lately, vehicle combined vehicle and IT(Information Technology) for vehicle's safety and convenience. so, vehicles is equipped with many ECU(Electronic control unit). the ECU's transmit data about each electronic control unit with OBD(On-Board Diagnostics) Network and data about each multimedia with MOST(Media Oriented System Transport) Network. In this paper, Supplementing disadvantage of existing blackbox, Using MOST of in-vehicle multimedia network and OBD-II of in-vehicle control network, blackbox system obtain the vehicle's driving state data. so, blackbox system judge vehicle's driving state and provide vehicle's driving state information to driver. Blackbox system implement the features mentioned above. as a result, blackbox is going to be more accurate blackbox system.

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Design and Implementation of The Vehicle Tracking Applications using Geospatial Query (공간 정보 질의를 이용한 차량 추적 애플리케이션의 설계 및 구현)

  • Ilham, Anugrah Moch;Jung, Jin-uk;Jin, Kyo-Hong;Hwang, Min-Tae
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.23 no.6
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    • pp.637-644
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    • 2019
  • In recent years, many public safety systems in the smart city are developed. These systems are taking responsibility to make a safe and comfortable city. In this paper, we propose vehicle tracking systems include a public safety system that enables the policeman to track the stolen vehicles more efficiently by providing the vehicle information in real time. When a vehicle is stolen, the vehicle owner can send a user emergency request. Then, the public safety server which supported by a geospatial query technique will give information such as time, distance, and routes to a policeman who is closest to the location of the vehicle to catch the thief. 300 simulations were performed to evaluate the performance of the system. We found that the average of times required when vehicle owner send a user emergency message on user application until policeman obtain a vehicle tracking request on police application below 1.2 seconds.