• Title/Summary/Keyword: Driving Direction

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A Research on Ball-Balancing Robot (볼 벨런싱 로봇에 관한 연구)

  • Kim, Ji-Tae;Kim, Dae-young;Lee, Won-Joon;Jin, Tae-Seok
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2017.05a
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    • pp.463-466
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    • 2017
  • The purpose of this paper is to develop a module capable of all-directional driving different from conventional wheeled robots, and to solve the problems of the conventional mobile robot with side driving performance degradation, It is possible to overcome the disadvantages such as an increase in the time required for the unnecessary driving. The all - direction spherical wheel drive module for driving a ball - balancing robot is required to develop a power transfer mechanism and a driving algorithm for driving the robot in all directions using three rotor casters. 3DoF (Axis) A driver with built-in forward motion algorithm is embedded in the module and a driving motor module with 3DoF (axis) for driving direction and speed is installed. The movement mechanism depends on the sum of the rotation vectors of the respective driving wheels. It is possible to create various movement directions depending on the rotation and the vector sum of two or three drive wheels. It is possible to move in different directions according to the rotation vector field of each driving wheel. When a more innovative all-round spherical wheel drive module for forward movement is developed, it can be used in the driving part of the mobile robot to improve the performance of the robot more technically, and through the forward-direction robot platform with the drive module Conventional wheeled robots can overcome the disadvantage that the continuous straightening performance is lowered due to resistance to various environments. Therefore, it is necessary to use a full-direction driving function as well as a cleaning robot and a mobile robot applicable in the Americas and Europe It will be an essential technology for guide robots, boarding robots, mobile means, etc., and will contribute to the expansion of the intelligent service robot market and future automobile market.

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Development of 3D Car Navigation System Using Image-based Virtual Environment (실사기반 가상환경기술을 이용한 차량용 3차원 네비게이션 시스템 개발)

  • Kim Chang-Hyun;Lee Wan-Bok
    • Journal of Game and Entertainment
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    • v.2 no.1
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    • pp.35-44
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    • 2006
  • Objective of this study is to develop a 3D car navigation system that shows the driving direction to a destination through real-time 3-D panoramic views of the route. For the purpose, a new searching process was established to find the optimal driving direction based on the driver's current location and the real-time traffic situation and the TIP (tour into the picture) method was extended to implement a wide virtual environment. A virtual environment was built up by applying the extended TIP method to the panoramic images taken at a constant distance from a real road, and then, displayed 3-D navigation as clear as the real images. The car navigation system developed in this study provides the optimal driving direction and real-time traffic situation using 2-D navigation module and 3D navigation module.

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A Real-time Detection Method for the Driving Direction Points of a Low Speed Processor (저 사양 프로세서를 위한 실시간 주행 방향점 검출 기법)

  • Hong, Yeonggi;Park, Jungkil;Lee, Sungmin;Park, Jaebyung
    • Journal of Institute of Control, Robotics and Systems
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    • v.20 no.9
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    • pp.950-956
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    • 2014
  • In this paper, the real-time detection method of a DDP (Driving Direction Point) is proposed for an unmanned vehicle to safely follow the center of the road. Since the DDP is defined as a center point between two lanes, the lane is first detected using a web camera. For robust detection of the lane, the binary thresholding and the labeling methods are applied to the color camera image as image preprocessing. From the preprocessed image, the lane is detected, taking the intrinsic characteristics of the lane such as width into consideration. If both lanes are detected, the DDP can be directly obtained from the preprocessed image. However, if one lane is detected, the DDP is obtained from the inverse perspective image to guarantee reliability. To verify the proposed method, several experiments to detect the DDPs are carried out using a 4 wheeled vehicle ERP-42 with a web camera.

Efficient Detection of Direction Indicators on Road Surfaces in Car Black-Box for Supporting Safe Driving

  • Kim, Jongbae
    • International Journal of Internet, Broadcasting and Communication
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    • v.7 no.2
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    • pp.123-129
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    • 2015
  • This paper proposes an efficient method to detect direction indicators on road surfaces to support drivers in driving safely using the Simulink model. In the proposed method, the ROIs are detected using the detection method of maximally stable extremal regions (MSER), and the road indicator regions are detected using the speeded up robust features (SURF) matching method for the corresponding point matching of the detected ROIs and the road indicator templates. Experiments on various road satiations show that the processing time of about 0.32 sec per frame was required, and a detection rate of 91% was achieved.

A Study on the Direction of Data Triggers and Elements for Automated Vehicle Data Recorder (자율주행자동차 데이터 기록장치의 기록 조건 및 항목에 대한 방향성 연구)

  • Heejin Kang;Naeun Woo;Giok Park;Jihyun Song
    • Journal of Auto-vehicle Safety Association
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    • v.15 no.4
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    • pp.71-78
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    • 2023
  • This study presents the direction of data triggers and elements to be recorded in automated vehicles in the future in relation to the event data recorder (EDR) and data storage system for automated driving (DSSAD). It does not distinguish between the EDR and DSSAD, but suggests data triggers and elements in preparation for overall automated vehicle accidents and dangerous situations. To propose, the current status of discussions on EDR/DSSAD internationally and the case of investigating accidents with automated vehicles under temporary driving licenses in Korea were analyzed. Based on the analysis, the direction of data triggers and elements of the EDR/DSSAD of automated vehicles were presented.

Driver Characteristics and Workload according to Changing Driving Environment and Types of Steering Wheel (도로 주행환경 변화와 핸들종류에 따른 운전자 부하 및 행동특성)

  • Jeon, Yong-Wook;Daimon, Tatsuru
    • Journal of the Ergonomics Society of Korea
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    • v.28 no.2
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    • pp.9-16
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    • 2009
  • The aim of this study was to evaluate the effects of the driving performance and workload according to changing driving environment and types of steering wheel. Twelve drivers who participated in this study consisted of two groups; six Japanese as the left-lane drivers who was accustomed to driving on left-hand side of the road, and six Europeans, Americans, and Korean as the right-lane drivers who was accustomed to driving on right-hand side of the road. They were asked to operate a driving simulator while using two different types of steering wheel (for the left-hand side driving and the right-hand side driving). During the experiment, a range of data were measured including driving performance, mental workload, and eye movements which were recorded in order to identify the amount of time looking towards the in-vehicle route guidance. Results indicated that the use of the steering wheel by parallel moving led to increase high attentional demand and worse glance behavior to traffic signs for the left-lane drivers. In the case of the right-lane drivers, the effects by changing driving direction were more effective than the types of steering wheel due to their habit or traits.

H$\infty$ Steering Control of an Unmanned Vehicle Driving System by the MR sensors (MR 센서를 이용한 무인 자동 시스템의 H$\infty$ 조향 제어)

  • 박기선;김창섭;이영진;윤강섭;배종일;이만형
    • 제어로봇시스템학회:학술대회논문집
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    • 2000.10a
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    • pp.6-6
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    • 2000
  • By using the information obtained from the outputs of MR(MagnetoResistive) sensors for an Unmanned Vehicle Driving System, we develop an algorithm that decides the distance and direction between vehicle and the guideline which is made by the magnet. To improve the robust tracking properties of the closed loop system, we introduce H$\infty$ controller and its application for the Unmanned Vehicle Driving System.

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Analysis of Driving Performances on the Characteristics of Drivers (운전자의 특성에 따른 자동차 운전 수행도 분석)

  • 오영진
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.21 no.48
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    • pp.145-152
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    • 1998
  • Driving performance is characterized by many things such as driver's experience period, age, ability of information processing and reaction time of control devices and so forth. However, each factor of driving performance is needed to help and screen a poor driver for safe driving. In this paper, driving performance was estimated by reaction of manipulating brake, accelerator, steering wheel and speed. Subjects were grouped by experience of accident and age. Combinations of every group were analysed. For all the dependent variables, only steering wheel and speed were shown to have significant difference, which could be regarded as visual information of speed and direction were the important factors to drive safely. Especially for tile elderly, it is needed to enhance their ability of visual information processing that is to be decreased with aging. Therefore driving simulator to train and screen the poor driver should be studied.

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Density-Magnetic Field correlation in MHD turbulence driven by forcing with different correlation time

  • Yoon, Heesun;Cho, Jungyeon;Kim, Jongsoo
    • The Bulletin of The Korean Astronomical Society
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    • v.42 no.1
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    • pp.55.2-55.2
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    • 2017
  • We study the effect of driving scheme on the density-magnetic field correlation. We numerically investigate how the correlation time of driving affects the correlation between density and magnetic field. We performed MHD turbulence simulation using two different driving schemes - a finite-correlated driving and a delta-correlated driving. In the former, the forcing vectors change continuously with a correlation time comparable to the large-eddy turnover time. In the latter, the direction and amplitude of driving changes in a very short time scale.

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The effects of PM driving direction and alert sound type on risk perception and awareness of PM driver of pedestrians (개인형 이동장치(PM)의 주행 방향과 경고방식의 차이가 보행자의 위험 지각과 주행자에 대한 인식에 미치는 영향)

  • Jung, Yoon-Hyun;Lee, Soo-Ji;Kang, Hyunmin
    • Journal of Digital Convergence
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    • v.19 no.7
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    • pp.217-226
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    • 2021
  • The use of personal mobility(PM) is increasing because of preading shared mobility, but, it causes risk of accidents and fear to pedestrians because of lack of sound. The purpose of this study is to find out the effects of the alert sound in PM and driving direction on risk perception of pedestrians, awareness on PM driver, and allowance for driving on each road. The 8 videos were produced from a pedestrian perspective, depending on the alert sound type(silent, vess, bell, voice) and direction of driving(front, back). After watching each video, participants completed surveys. There was a non-effect on the driving direction. Regardless of the alert sound type, all of the sounds reduced the risk perception. Also, the awareness of PM drivers and allowance for driving on each road were positive. This study found that PM needed an alert sound for pedestrian safety. We expect the results of the study to help improve awareness of PM and make policies and regulations.