• 제목/요약/키워드: Vehicle Tracking System

검색결과 507건 처리시간 0.03초

Design of Vehicle Location Tracking System using Mobile Interface

  • Chung, Ji-Moon;Choi, Sung;Ryu, Keun-Ho
    • 한국디지털정책학회:학술대회논문집
    • /
    • 한국디지털정책학회 2004년도 International Conference on Digital Policy & Management
    • /
    • pp.185-202
    • /
    • 2004
  • Recent development in wireless computing and GPS technology cause the active development in the application system of location information in real-time environment such as transportation vehicle management, air traffic control and location based system. Especially, study about vehicle location tracking system, which monitors the vehicle's position in a control center, is appeared to be a representative application system. However, the current vehicle location tracking system can not provide vehicle position information that is not stored in a database at a specific time to users. We designed a vehicle location tracking system that could track vehicle location using mobile interface such as PDA. The proposed system consist of a vehicle location retrieving server and a mobile interface. It is provide not only the moving vehicle's current location but also the position at a past and future time which is not stored in database for users.

  • PDF

Research of the Unmanned Vehicle Control and Modeling for Lane Tracking and Obstacle Avoidance

  • Kim, Sang-Gyum;Lee, Woon-Sung;Kim, Jung-Ha
    • 제어로봇시스템학회:학술대회논문집
    • /
    • 제어로봇시스템학회 2003년도 ICCAS
    • /
    • pp.932-937
    • /
    • 2003
  • In this paper, we will explain about the unmanned vehicle control and modeling for combined obstacle avoidance and lane tracking. First, obstacle avoidance is considered as one of the important technologies in the unmanned vehicle. It is consisted by two parts: the first part includes the longitudinal control system for the acceleration and deceleration and the second part is the lateral control system for the steering control. Each system uses to the obstacle avoidance during the vehicle moving. Therefore, we propose the method of vehicle control, modeling and obstacle avoidance. Second, we describe a method of lane tracking by means of vision system. It is important in the unmanned vehicle and mobile robot system. In this paper, we deal with lane tracking and image processing method and it is including lane detection method, image processing algorithm and filtering method.

  • PDF

선박용 태양추적 시스템을 위한 스데빌라이저 구현에 관한 연구 (A Study on the Implementation of the Stabilizer of Sun Tracking System for a ship)

  • 김태훈;김종화;안정훈;이병결
    • 제어로봇시스템학회:학술대회논문집
    • /
    • 제어로봇시스템학회 2000년도 제15차 학술회의논문집
    • /
    • pp.163-163
    • /
    • 2000
  • The tracking system on the moving vehicle is made up of two parts. One is a stabilizer which is flatting the system against the moving vehicle, the other is a tracker which is tracking the target. This makes use of the geometric information of the tracking target and that utilizes the dynamic information of the moving vehicle equipping the tracking system. Especially the stabilizer is very important for an ocean vehicle affected by wave, wind, and current. In this paper, the stabilizer of sun tracking system for a ship is developed.

  • PDF

모바일 인터페이스를 이용한 차량 위치 추적 시스템 설계 (Design of Vehicle Location Tracking System using Mobile Interface)

  • 오준석;안윤애;장승연;이봉규;류근호
    • 정보처리학회논문지D
    • /
    • 제9D권6호
    • /
    • pp.1071-1082
    • /
    • 2002
  • 무선 컴퓨팅 기술 및 이동 객체의 위치를 정확하게 추적할 수 있는 GPS 기술의 발달로 인하여 물류 차량 관리, 항공 교통 통제, 위치 기반 서비스 등과 같은 실시간 환경의 위치 정보 응용 시스템의 개발이 활발해지고 있다. 특히, 차량의 위치를 관제 센터에서 실시간으로 파악하는 차량 위치 추적 시스템에 관한 연구가 대표적인 응용 시스템으로 등장하였다. 그런데 기존의 차량 위치 추적 시스템은 데이터베이스에 저장되지 않은 특정 시간의 차량 위치 정보를 사용자에게 제공하지 못하는 문제점을 갖는다. 따라서 이 논문에서는 PDA와 같은 모바일 인터페이스를 통하여 실시간으로 차량의 위치 추적이 가능한 시스템을 설계한다. 제안 시스템은 차량 위치 검색 서버와 모바일 인터페이스로 구성되며, 이동 차량의 현재 위치뿐만 아니라 데이터베이스에 저장되지 않은 과거 및 미래 위치 정보까지 사용자에게 제공하는 장점을 갖는다.

충돌회피 및 차선추적을 위한 무인자동차의 제어 및 모델링 (Unmanned Ground Vehicle Control and Modeling for Lane Tracking and Obstacle Avoidance)

  • 유환신;김상겸
    • 한국항행학회논문지
    • /
    • 제11권4호
    • /
    • pp.359-370
    • /
    • 2007
  • 무인 자동차 시스템에 있어 차선추적과 물체회피 기술은 중요한 핵심기술 이다. 본 논문에서는 차량제어와 모델링, 센서 실험을 통하여 차선추적 및 물체회피 방법을 제안하고자 한다. 첫 번째 물체회피는 가/감속을 위한 종 방향 제어와 조향제어에 의한 횡 방향 제어 두 개의 부분으로 구성되어 진다. 각각의 시스템은 무인자동차의 제어를 위하여 차량의 위치, 주변환경 인식, 상황에 따른 빠른 처리를 요구한다. 차량의 제어 전략이 작동되는 동안 도로에서의 물체인식과 회피는 차량의 속도에 달려 있다. 두 번째 영상시스템을 통한 차선추석방법을 설명한다. 이 또한 두 부분으로 구성된다. 첫 번째 횡/종 제어를 위한 로도 모델이 포함된다. 두 번째 차선추적방법, 영상처리 알고리즘, 필터링 방법 및 영상처리 방법을 다룰 것이다. 마지막으로 본 논문에서는 실차실험을 통한 차선추적 및 물체회피 차량제어 및 모델링 방법을 제안한다.

  • PDF

Development of Steering Control System for Autonomous Vehicle Using Geometry-Based Path Tracking Algorithm

  • Park, Myungwook;Lee, Sangwoo;Han, Wooyong
    • ETRI Journal
    • /
    • 제37권3호
    • /
    • pp.617-625
    • /
    • 2015
  • In this paper, a steering control system for the path tracking of autonomous vehicles is described. The steering control system consists of a path tracker and primitive driver. The path tracker generates the desired steering angle by using the look-ahead distance, vehicle heading, and a lateral offset. A method for applying an autonomous vehicle to path tracking is an advanced pure pursuit method that can reduce cutting corners, which is a weakness of the pure pursuit method. The steering controller controls the steering actuator to follow the desired steering angle. A servo motor is installed to control the steering handle, and it can transmit the steering force using a belt and pulley. We designed a steering controller that is applied to a proportional integral differential controller. However, because of a dead band, the path tracking performance and stability of autonomous vehicles are reduced. To overcome the dead band, a dead band compensator was developed. As a result of the compensator, the path tracking performance and stability are improved.

무인항공기 자동이착륙을 위한 레이다 비콘 시스템의 추적필터 설계 (A Tracking Filter Design of the Radar Beacon System for Automatic Take-off and Landing of Unmanned Aerial Vehicle)

  • 김만조;황치정
    • 한국항공운항학회지
    • /
    • 제21권1호
    • /
    • pp.23-29
    • /
    • 2013
  • This paper presents a tracking filter of radar beacon system (RBS) for automatic takeoff and landing of an unmanned aerial vehicle. The proposed tracking filter is designed as the decoupled tracking filter to reduce the computational burden. Also, an adaptive estimation method of the measurement error covariance is proposed to provide an improved tracking performance compared to the conventional decoupled tracking filter whenever the accuracy of RBS observations is degraded. 100 times Monte Carlo runs performed to analyze the performance of the proposed tracking filter in case of normal operation and degraded operations, respectively. The simulation results show that the proposed tracking filter provides the improved tracking accuracy in comparison with the conventional decoupled tracking filter.

차선인식을 위한 무인자동차의 차량제어 및 모델링에 관한 연구 (Research of the Unmanned Vehicle Control and Modeling for Lane Tracking)

  • 김상겸;임하영;김정하
    • 한국자동차공학회논문집
    • /
    • 제11권6호
    • /
    • pp.213-221
    • /
    • 2003
  • This paper describes a method of lane tracking by means of a vision system which includes vehicle control and modeling. Lane tracking is considered one of the important technologies in an unmanned vehicle and mobile robot system. The current position and condition of the vehicle are calculated from an image processing method by a CCD camera. We deal with lane tracking as follows. First, vehicle control is included in the road model, and lateral and longitudinal controls. Second, the image processing method deals with the lane detection method, image processing algerian, and filtering method. Finally, this paper proposes a correct method for lane detection through a vehicle test by wireless data communication.

초음파 위치 센서를 이용한 차량 로봇의 경로 추종에 관한 연구 (A Study for Path Tracking of Vehicle Robot Using Ultrasonic Positioning System)

  • 윤석민;여태경;박성재;홍섭;김상봉
    • 대한기계학회:학술대회논문집
    • /
    • 대한기계학회 2008년도 추계학술대회A
    • /
    • pp.795-800
    • /
    • 2008
  • The paper presents research for the established experiment environment of multi vehicle robot, localization algorithm that is based on vehicle control, and path tracking. The established experiment environment consists of ultrasonic positioning system, vehicle robot, server and wireless module. Ultrasonic positioning system measures positioning for using ultrasonic sensor and generates many errors because of the influence of environment such as a reflection of wall. For a solution of this fact, localization algorithm is proposed to determine a location using vehicle kinematics and selection of a reliable location data. And path tracking algorithm is proposed to apply localization algorithm and LOS, finally, that algorithms are verified via simulation and experimental

  • PDF

LPR 시스템 트리거 신호 생성을 위한 딥러닝 슬라이딩 윈도우 방식의 객체 탐지 및 추적 (Deep-learning Sliding Window Based Object Detection and Tracking for Generating Trigger Signal of the LPR System)

  • 김진호
    • 디지털산업정보학회논문지
    • /
    • 제17권4호
    • /
    • pp.85-94
    • /
    • 2021
  • The LPR system's trigger sensor makes problem occasionally due to the heave weight of vehicle or the obsolescence equipment. If we replace the hardware sensor to the deep-learning based software sensor in order to generate the trigger signal, LPR system maintenance would be a lot easier. In this paper we proposed the deep-learning sliding window based object detection and tracking algorithm for the LPR system's trigger signal generation. The gate passing vehicle's license plate recognition results are combined into the normal tracking algorithm to catch the position of the vehicle on the trigger line. The experimental results show that the deep learning sliding window based trigger signal generating performance was 100% for the gate passing vehicles including the 5.5% trigger signal position errors due to the minimum bounding box location errors in the vehicle detection process.