• Title/Summary/Keyword: Vehicle Tracking System

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INTELLIGENT CONTROL STRATEGY FOR A MOBILE VEHICLE WITH NEURCOMPUTER

  • Sugisaka, Masanori;Wang, Xin;Lee, Ju-Jang
    • 제어로봇시스템학회:학술대회논문집
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    • 1997.10a
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    • pp.815-818
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    • 1997
  • In this paper, an intelligent control strategy for a mobile vehicle, based on the technology of the artificial neural network in a Neurocomputer, is presented. The mobile vehicle learned recognizing and driving knowledge by a neurocomputer. Moment Invariants computation was used to extract the shape of objects. The technologies of both neurocomputer and Neumann-type computer are applied into the control system, and make the mobile vehicle be capable of tracking designated objects and avoiding obstacles.

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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.

The Design and Implementation of a Multi-Session Processing Between RMA and RCP within a Vehicle Tracking System (차량 추적 시스템에서 RMA와 RCP 사이의 다중세션 설계 및 구현)

  • Jang, Chung Ryong;Lee, Yong Kwon;Lee, Dae Sik
    • Journal of Korea Society of Digital Industry and Information Management
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    • v.10 no.3
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    • pp.127-141
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    • 2014
  • A Vehicle Tracking System consists of GPS tracking device which fits into the vehicle and captures the GPS location information at regular intervals to a central GIS server, and GIS tracking server providing three major responsibilities: receiving data from the GPS tracking unit, securely storing it, and serving this information on demand of the user. GPS based tracking systems supporting a multi-session processing among RMA, RM, and RCP can make a quick response to various services including other vehicle information between RSU and OBU on demand of the user. In this paper we design RSU lower layers and RCP applications in OBU for a multisession processing simulation and test message processing transactions among RMA-RM and RM-RCP. Furthermore, we implement the additional functions of handling access commands simultaneously on multiple service resources which are appropriate for the experimental testing conditions. In order to make a multi-session processing test, it reads 30 resource data,0002/0001 ~ 0002/0030, in total and then occurs 30 session data transmissions simultaneously. We insert a sequence number field into a special header of dummy data as a corresponding response to check that the messages are received correctly. Thus, we find that GIS service system with a multi-session processing is able to provide additional 30 services in a same speed of screen presentation loading while identifying the number of session processing of Web GIS service, the number of OBU service, and the speed of screen presentation loading by comparing a single session and a multi-session of GIS service system.

Autonomous Traveling of Unmanned Golf-Car using GPS and Vision system (GPS와 비전시스템을 이용한 무인 골프카의 자율주행)

  • Jung, Byeong Mook;Yeo, In-Joo;Cho, Che-Seung
    • Journal of the Korean Society for Precision Engineering
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    • v.26 no.6
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    • pp.74-80
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    • 2009
  • Path tracking of unmanned vehicle is a basis of autonomous driving and navigation. For the path tracking, it is very important to find the exact position of a vehicle. GPS is used to get the position of vehicle and a direction sensor and a velocity sensor is used to compensate the position error of GPS. To detect path lines in a road image, the bird's eye view transform is employed, which makes it easy to design a lateral control algorithm simply than from the perspective view of image. Because the driving speed of vehicle should be decreased at a curved lane and crossroads, so we suggest the speed control algorithm used GPS and image data. The control algorithm is simulated and experimented from the basis of expert driver's knowledge data. In the experiments, the results show that bird's eye view transform are good for the steering control and a speed control algorithm also shows a stability in real driving.

Non-regressor Based Adaptive Tracking Control of an Underwater Vehicle-mounted Manipulator (수중 선체에 장착된 로봇팔 궤적의 비귀환형 적응제어)

  • 여준구
    • Journal of Ocean Engineering and Technology
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    • v.14 no.2
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    • pp.7-12
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    • 2000
  • This paper presents a non-regressor based adaptive control scheme for the trajectory tracking of underwater vehicle-mounted manipulator systems(UVMS). The adaptive control system includes a class of unmodeled effects is applied to the trajectory control of an UVMS. The only information required to implement this scheme ios the upper bound and lowe bound of the system parameter matrices the upper bound of unmodeled effects the number of joints the position and attitude of the vehicle and trajectory commands. The adaptive control law estimates control gains defined by the combinations of the bounded constants of system parameter matrices and of a filtered error equation. To evaluate the performance of the non-regressor based adaptive controller computer simulation was performed with a two-link planar robot model mounted on an underwater vehicle. The hydrodynamic effects acting on the manipulator are included. It is assumed that the vehicle's motion is slow and can be predicted with a proper compensator.

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An Experimental Study on Coordinates Tracker Realization for EOTS Slaved to the Radar of a Helicopter (전자광학추적장비의 좌표추적기 구현 및 헬리콥터 탑재 레이더 연동시험에 관한 연구)

  • Jung Seul;Park Ju-Kwang
    • Journal of Institute of Control, Robotics and Systems
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    • v.11 no.4
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    • pp.369-377
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    • 2005
  • This paper describes the realization of a coordinates tracking algorithm for an EOTS (Electro-Optical Tracking System). The EOTS stabilizes the image sensors, tracks targets automatically, and provides navigation capability for vehicles. The coordinates tracking algorithm calculates the azimuth and the elevation angle of an EOTS using the inertial navigation system and the attitude sensors of the vehicle, so that LOS designates the target coordinates which are generated by a Radar. In the error analysis, the unexpected behaviors of an EOTS due to the time delay and deadbeat of the digital signals of the vehicle equipments are anticipated and the countermeasures are suggested. The application of this algorithm to an EOTS will improve the operational capability by reducing the time which is required to find the target and support flight especially in the night time flight and the poor weather condition.

Depth Control of Autonomous Underwater Vehicle Using Robust Tracking Control (강인추적 제어를 이용한 자율 무인 잠수정의 심도제어)

  • Chai, Chang-Hyun
    • Journal of the Korean Society of Manufacturing Process Engineers
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    • v.20 no.4
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    • pp.66-72
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    • 2021
  • Since the behavior of an autonomous underwater vehicle (AUV) is influenced by disturbances and moments that are not accurately known, the depth control law of AUVs must have the ability to track the input signal and to reject disturbances simultaneously. Here, we proposed robust tracking control for controlling the depth of an AUV. An augmented closed-loop system is represented by an error dynamic equation, and we can easily show the asymptotic stability of the overall system by using a Lyapunov function. The robust tracking controller is consisted of the internal model of the command signal and a state feedback controller, and it has the ability to track the input signal and reject disturbances. The closed-loop control system is robust to parameter uncertainties. Simulation results showed the control performance of the robust tracking controller to be better than that of a P + PD controller.

Design of A Moving Object Management System for Tracking Vehicle Location (차량 위치 추적을 위한 이동 객체 관리 시스템의 설계)

  • Ahn, Yoon-Ae;Kim, Dong-Ho;Ryu, Keun-Ho
    • The KIPS Transactions:PartD
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    • v.9D no.5
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    • pp.827-836
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    • 2002
  • Moving object management systems manage spatiotemporal data, which change their location over tine such as people, animals, and cars. These moving object management systems can be applied to vehicle location tracking, digital battlefield, location-based service, and so on. The existing moving object management systems only manage past or future location of the moving objects separately. Therefore, they cannot suggest estimation method of uncertain past or future location of the moving objects. In this paper, we propose a moving object management system, which not only manages historical data of the moving objects, but also predicts past and future location of the moving objects using historical data stored in database. We define the moving objects for vehicle location tracking and propose a moving object database structure. Finally, we suggest an execution model of the proposed system and apply the execution model to a virtual scenario for vehicle tracking.

A Study on Location Based Service System of Commercial Vehicle with RFID & Mobile Technology (RFID와 모바일 기술을 활용한 화물차량의 위치기반 서비스 시스템에 관한 연구)

  • Cho, Yong-Chul;Lee, Chang-Ho
    • Journal of the Korea Safety Management & Science
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    • v.9 no.1
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    • pp.85-93
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    • 2007
  • Recently, RFID technology is being widely embraced in the supply chain, by manufacturers, retailers, and logistics firms. This study shows the RFID system to provide location based service for commercial vehicle by integrating tracking function of GPS with Mobile service. For this, we configured PC-based terminal for vehicle and developed application consisted of RFID and GPS manager program. In web service module which uses mobile service, commodity information acquired from each vehicle at real-time is added at database and it is analyzed in various aspects to support management decision through the Legacy system.

Human Operator Modeling and Input Command Shaping Design for Manual Target Tracking System (수동표적추적장치의 휴먼운용자 모델링 및 입력명령형성기 설계)

  • Lee, Seok-Jae;Lyou, Joon
    • Journal of the Korea Institute of Military Science and Technology
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    • v.10 no.2
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    • pp.21-30
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    • 2007
  • A practical method to design the input shaping which generates control command is proposed in this paper, We suggest an experimental technique considering human operator's target tracking error to improve aiming accuracy which significantly affects hit probability. It is known that stabilization performance is one of the most important factors for ground combat vehicle system. In particular, stabilization error of the manual target tracking system mounted on moving vehicle directly affects hit probability. To reduce this error, we applied input command shaping method using preprocessing filtering and functional curve fitting. First of all, we construct the human operator model to consider effects of human operator on our system. Input shaping curve is divided into several regions to get rid of the above problems and to improve the system performance. At example design part, we chose three steps of functional command curve and determine the parameters of the function by the proposed design method. In order to verify the proposed design method, we carried out the experiments with real plant of a fighting vehicle.