• Title/Summary/Keyword: 감응신호

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Developing and Evaluation of Coordinated Semi-Actuated Signal Control for Field Application (현장적용을 위한 연동형 반감응 신호제어 개발 및 분석)

  • Park, Soon-Yong;Lee, Suk-Ki;Jeong, Jun-Hwa
    • The Journal of the Korea Contents Association
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    • v.14 no.3
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    • pp.451-462
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    • 2014
  • In this paper, Coordinated Semi-Actuated Signal Control algorithm was developed and evaluated. According to the analysis of simulation, the coordinated semi-actuated signal control led to reduced vehicle delay as the difference of traffic volume between major and minor streets was getting bigger. But when there was relatively high traffic volume, or the equivalent amount of traffic volume on major and minor streets, optimized pre-timed signal control was verified to lower delay times compared to coordinated semi-actuated signal control; however, it might increase pedestrian delay. Therefore, the coordinated semi-actuated signal control should be implemented at intersections where traffic volume is relatively low.

A Dynamic Signal Metering Algorithm Development for Vehicles and Pedestrians at Roundabouts (차량 및 보행자를 고려한 회전교차로 감응식 신호미터링 알고리즘 개발)

  • Lee, Sol;Ahn, Woo-Young;Lee, Seon-Ha
    • The Journal of The Korea Institute of Intelligent Transport Systems
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    • v.16 no.6
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    • pp.53-66
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    • 2017
  • In order to improve traffic flow and vehicular safety, installation of roundabouts is encouraging recently. Roundabouts are generally installed at which traffic flow and pedestrian flow is relatively low intersections. Roundabouts reduce vehicle speed, minimize vehicle weaving, and reduce critical conflict points. For these reasons, roundabouts are generally operated unprotected pedestrian crosswalk, thus a shortcoming for pedestrian safety always exists at roundabouts. The purpose of this study is developing a dynamic signal metering algorithm for traffic and pedestrian at four-way-approach with two-lane roundabouts in which three different operation algorithms(fixed-time pedestrian, vehicle signal metering, and vehicle and pedestrian signal metering) are suggested and its performance is tested by using VISSIM. The results of the fixed pedestrian signal operation show that there is a big average delay increase in general and that increases up to 51.4 seconds/vehicle(42.5%) when the total number of approaching vehicle is 3,800 vehicle/hour. However, the results of the simultaneous dynamic signal metering operation for the vehicle and pedestrian crossing with push button show that there is a substantial average delay reduction up to 40.6 seconds/vehicle(42.7%) when the total number of approaching vehicle is 3,000 vehicle/hour.

Analysis of Cognitive Psychology Creates in Sound Design Structure (영상음향의 구조가 수용자 감응도에 미치는 영향)

  • Yoo, Whoi-Jong;Moon, Nam-Mee
    • Proceedings of the Korean Society of Broadcast Engineers Conference
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    • 2007.02a
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    • pp.35-40
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    • 2007
  • 본 논문에서는 사운드디자이너가 주어진 영상조건 속에서 음원(sound source)을 어떻게 구성하고, 디자인하고, 믹싱하는가 에 따라 수용자의 그 감응도(감정적변화:sympathy response)와 인지도(이해와 기억도:acknowl-edgment)가 달라질 수 있는가를 분석하고자 한 것이다. 그 방법으로 영상음향의 구조에서 음악, 음향, 대사의 상호크기, 연결, 편집, 강조, 등을 달리한 영상 내에서 사운드디자인과 믹싱을 달리하여 실험하였으며 주관적평가방법과 뇌파변화측정방법 2가지로 하여 비교, 평가 분석하고자 했다. 사운드의 디자인구조가 수용자에게 미치는 영향도를 알아보는 이러한 연구는 영화, 방송 등 미디어사운드에서 사운드디자인 구조를 어떻게 만들어야 하는가? 에 대한 방법론적 정리에 기여할 것으로 기대된다.

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Development of a Single Fire Alarm System of House Based on Wireless Communication (무선 감응식 주택 단독 화재 경보 시스템 개발)

  • Park, Hyeon-Ho;Cho, Seong-Jin;Park, Byeong-Hwa;Heo, Jeong-Hun;Ko, Yun-Seok
    • The Journal of the Korea institute of electronic communication sciences
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    • v.13 no.5
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    • pp.1017-1022
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    • 2018
  • In this paper, a single house fire alarm device, which can solve the problem of fire perception at midnight time and the attenuation of alarm signal due to the wall between rooms based on the wireless communication, was developed. The radio controlled fire alarm device was designed to allow fire to be recognized quickly and accurately by monitoring the temperature and $CO_2$ concentration based on the temperature sensor and gas sensor, by detecting the fire in the house and by transmitting the fire alarm to the individual wireless alarms of other rooms using the wireless transmission/reception module. Using the Arduino as a main control device, three independent fire alarm device prototypes were made, and their usefulness was verified by the correct operations in temperature and gas tests.

Assessment of Improved Transportation Operating Systems in Changwon City (창원시 교통운영체계 개선 효과평가 연구)

  • Hong, Soon-Jin;Jeong, Jun-Ha;Hwang, Sang-Ho;Ko, Myoung-Soo;Lee, Sang-Soo
    • The Journal of The Korea Institute of Intelligent Transport Systems
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    • v.12 no.6
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    • pp.127-136
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    • 2013
  • In order to improve the safety and efficiency of traffic signal operation, several core projects of advanced transportation operating systems were implemented in Changwon City. This project included 10 units such as the expansion of roundabout, the permitted left-turn signal operation and the effectiveness of the projects was assessed using before and after studies. This paper presented the quantitative and qualitative evaluation results for three projects: roundabout, permitted left-turn signal operation, and left-turn actuated signal operation. From the analysis results, average travel speed was improved by 16.8% from the installation of roundabouts and average travel time and control delay were reduced by 12.4% and 41.6% respectively, from permitted left-turn operation. It was found that average control delay was reduced about 26.7% from left-turn actuated signal operation. In addition, more than 57.7% of the surveyed people was satisfied with the operational performance of the roundabout implemented. It is expected that the operational performance of traffic signal can be greatly improved by incorporating the proper projects of advanced transportation operating systems in other cities.

Development of an Urban Freeway Exit-Intersection Control Strategy using Actuated Traffic Control (감응식 신호제어를 이용한 도시고속도로 진출부 교차로 제어전략 개발)

  • So, Jae-Hyun;Cho, Han-Seon;Lee, Seung-Hwan
    • Journal of Korean Society of Transportation
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    • v.26 no.6
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    • pp.81-89
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    • 2008
  • This paper aims to develop an integrated urban freeway exit-intersection actuated traffic signal control strategy based on which a real-time detection of queue at each of an exit-ramp and an arterial. To evaluate effects of the proposed actuated traffic signal control according to various traffic situations and geometric conditions, this paper analyzed the effects of the proposed traffic signal control strategy according to traffic situations such as the occasion of the arterial being saturated, the occasion of the exit-ramp being saturated, and the occasion of both the arterial and the exit-ramp being saturated. To reflect geometric conditions that influence the effects of the control strategy, this paper evaluated effects before and after applying the actuated traffic signal control strategy according to six cases for both above and under the downstream link length of 200m as proposed by COSMOS. The study results shown that when the link length above 200m, offered a greater effect of applying the actuated traffic control strategy than below 200m. Thus, the actuated traffic signal control through a real-time detection of queue is expected to offer a greater effect at longer downward link.

Deep Learning Based Emergency Response Traffic Signal Control System

  • Jeong-In, Park
    • Journal of the Korea Society of Computer and Information
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    • v.28 no.2
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    • pp.121-129
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    • 2023
  • In this paper, we developed a traffic signal control system for emergency situations that can minimize loss of property and life by actively controlling traffic signals in a certain section in response to emergency situations. When the emergency vehicle terminal transmits an emergency signal including identification information and GPS information, the surrounding image is obtained from the camera, and the object is analyzed based on deep learning to output object information having information such as the location, type, and size of the object. After generating information tracking this object and detecting the signal system, the signal system is switched to emergency mode to identify and track the emergency vehicle based on the received GPS information, and to transmit emergency control signals based on the emergency vehicle's traveling route. It is a system that can be transmitted to a signal controller. This system prevents the emergency vehicle from being blocked by an emergency control signal that is applied first according to an emergency signal, thereby minimizing loss of life and property due to traffic obstacles.

A Study on E-sensitized Systems for Pedestrian Crosswalk Safety (횡단보도 보행자 안전을 위한 전자감응시스템)

  • Lee, Jong-Won;Park, Sung-Won;Moon, Geon-Hee;Jung, Hoe-kyung
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2015.05a
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    • pp.564-566
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    • 2015
  • Red traffic light indicates a different meaning, the green one. Motorists and pedestrians in the crosswalk must stop or move in accordance with a signal light. However, the probability of an accident is high if you do not see or ignore these signals. In addition to the curved pedestrian crossing installed the announcement system using an infrared sensor is difficult. In this paper, we design and implement methods of detecting pedestrians using the camera. A camera installed on the pontoon walking up the pedestrian and the pedestrian detection range is set through the image. With the proposed system it is effective in detecting pedestrians in the crosswalk curved.

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Traffic Signal Control Methods for Functional Improvements in COSMOS (COSMOS 안정화를 위한 교통축 및 감응제어 방법연구)

  • 이승환;오영태;이상수
    • Journal of Korean Society of Transportation
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    • v.20 no.6
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    • pp.31-43
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    • 2002
  • Traffic signal control methods are suggested to improve the operational effectiveness of COSMOS system in Seoul. First. a method that improves progression of the corridor traffic flow within a common sub-area was explored. Applying this method, both frequency and magnitude of offset transition were reduced as compared to the existing method. In addition, the level of connection among neighboring corridors increased by applying the method, thus the qualify of progression was also improved. Second, a practical guideline on signal phase design was proposed to improve the efficiency of actuated operations for the left-turn movement. Last, a method for estimating optimal queue length parameters was surveyed and evaluated. An evaluation study was performed for the suggested methods through both field and simulation studies. Results showed that the proposed methods gave better performance than the existing methods. It is expected that the use of proposed methods can improve operational performance of COSMOS.

Development of VR-based realistic contents of driving practice according to traffic regulations (VR 기반 교통법규 변경에 따른 운전 연습 실감 콘텐츠 개발)

  • Min-Sun Kim;Han-Seo Kim;Sun-Kyung Moon;Hye-Rim Shin
    • Proceedings of the Korea Information Processing Society Conference
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    • 2023.11a
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    • pp.967-968
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    • 2023
  • 본 연구에서는 매년 달라지는 교통법규를 바탕으로 가상현실 기술과 IoT 기술을 활용하여 게임 개발 엔진인 Unity3D를 이용한 VR 기반 교통법규 변경에 따른 운전 연습 실감 콘텐츠를 개발하고자 한다. 본 연구에서 소개하는 콘텐츠는 우회전 신호등의 유무와 좌회전 감응 신호의 상황을 학습환경으로 제공한다. 즉, 본 연구는 실제 도로에서의 교통질서를 바로잡고, 효과적인 교통안전 교육을 마련함으로써 새로운 교통법규를 정확하게 준수하도록 도움을 제공하는데 의의를 가진다.