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Design of Smart Farm with Automatic Transportation Function
Hwa-ra Hur(허화라),Seok-Gyu Park(박석규),Myeong-Chul Park(박명철) 한국컴퓨터정보학회 2019 韓國컴퓨터情報學會論文誌 Vol.24 No.8
The existing smart farm technology has been systematized for the mass production rather than the consumer. There are many problems such as economical aspect to apply to actual rural environment due to aging. The purpose of this study is to apply smart farm technology based on the applicability of population aged in rural areas. Due to the heat wave, the crops in general greenhouse cultivation facilities suffered from damage such as sunlight damage. To minimize such damage, adjust the temperature and humidity environment or install a light-shielding film. However, the workers in the rural areas are aging and the elderly who are farming alone have a lot of difficulties in doing so. In the case of people with weak physical strength, there is a danger that they may lead to safety accidents when carrying heavy loads. In this paper, we propose "Smart Palm capable of automatic transportation function’, applying small smart vehicles that follow workers to existing smart farms to improve and prevent these problems. It is a smart farm that performs the control functions of the existing smart greenhouse environment, installs the rail for each trough, and has a vehicle that follows the worker. The smart app can directly control the greenhouse and the vehicle remotely manually.
허화라,Hur Hwa-Ra 대한경영정보학회 1998 경영과 정보연구 Vol.2 No.-
In this study I construct CAN(Controller Area Network) for automobiles similar to LAN(Local Area Network) and build communication modules in the major part of an automobile to link several sub-systems. Since each station replaces the communication function of sub-systems and has various types of sensor, actuator, controller, and switch, every information about automobile's status is obtained from the network. The manufactured system showed a superior capability. The following is the contents of study. 1. The definition of communication packet through the analysis of CAN protocol. 2. The Design of modules using micro-controller 80C196CA. 3. The Network configuration.
내포 병렬성을 가진 공유메모리 프로그램의 3차원 시각화
박명철,허화라,하석운,Park, Myeong-Chul,Hur, Hwa-Ra,Ha, Seok-Wun 한국정보통신학회 2008 한국정보통신학회논문지 Vol.12 No.1
내포 병렬성을 가지는 병렬 프로그램은 동기화 없이 병행적으로 수행되는 양상으로 인하여 비결정적인 결과를 초래하는 경향이 있다. 이러한 오류를 탐지하기 위하여 다양한 시각화 기법이 이용되고 있지만, 공간의 제한성과 과다한 추상화로 인하여 직관성이 매우 저하되는 실정이다. 본 논문에서는 내포 병렬성을 가지는 복잡한 병렬 프로그램의 전역적 구조를 사용자에게 제공하는3차원 시각화 엔진을 제안한다. 제안된 시각화 엔진은 전역적 구조를 사용자에게 제공함으로서 프로그램의 이해를 용이하게 하고 효과적인 디버깅 환경을 제공한다. A pellet program including a nested parallelism has a result of non-deterministic because of executed concurrently without synchronization. In order to detect like this error the visualization technique which is various is used. But the intuition characteristic is decreased because of limits of space and excessive abstraction. In this paper, proposes 3-D visualization engines which provide global structure of the arranging in a parallel program with nested parallelism which is complicated to the user. The visualization engine which is proposed provides global structure to the user as program easily to understand, it provides an effective debugging environment.
Google Earth를 이용한 비행정보 시각화 시스템의 구현
박명철(Myeong-Chul Park),허화라(Hwa-Ra Hur) 한국컴퓨터정보학회 2010 韓國컴퓨터情報學會論文誌 Vol.15 No.10
본 논문은 항공기의 비행정보를 효과적으로 시각화하기 위하여 Google Earth를 이용한 시스템 구현에 대해 기술한다. 이 시스템은 Google Earth 에서 제공하는 상세한 위성 영상 정보를 이용하기 위하여 COM API 를 이용하였다. 제안하는 시스템은 항공기의 다양한 장치에서 얻어진 비행정보를 OpenGL을 이용하여 각종 계기판에 표시하고 실제 비행모습을 가시화하기 위하여 Google Earth Map에 연동하여 표시하였다. 본 연구결과는 비행평가 및 개선에 이용될 수 있고 향후, 비행소프트웨어 개발에 적용될 수 있다. This paper presents implementation of a system for effective visualizing flight information of aircraft using Google Earth. This system in order to use a detailed satellite image which provide from Google Earth used COM API. This system appeared the various flight information of the aircraft in the instrument panel using OpenGL and the aircraft flight condition is visible in the Google Earth Map. This research result used to flight evaluation and improvement. In future will be able to apply to flight software development.
Camera Calibration of 5 D.O.F Robot Arm
최승욱(Sung-Yug Choi),허화라(Hwa-Ra Hur) 한국멀티미디어학회 2006 한국멀티미디어학회 학술발표논문집 Vol.2006 No.1
In this paper, to improve the accuracy in estimating the position/orientation of a camera, the position and shape information of an object, which is obtained precisely by a pattern recognition procedure, is integrated into the calibration process based upon a point-correspondence scheme. Experiments are performed to show the improvement of accuracy. In most of camera calibration processes either based upon a line-correspondence scheme or based upon a point-correspondence scheme, clear images of the object are required. Even with the uncontaminated images, there exist errors in estimating position and orientation of a camera due to lens distortion and limit number of pixels, as well as inherent errors due to the perspective model of a camera. These problems are being tackled in various ways since there is no simple and solid approach.