• Journal of Convergence Society for SMB
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• v.2 no.1
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• pp.33-40
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• 2012

Recently, embedded environment suffers a huge change, by growth of hardware and turning to be software-controlled. This has improved embedded software complexity. It also brought us the limit of the old development way to resolve the problem. Model-driven development is one solution to solve the limit common software development by previous way, and it became a one uses for embedded environment also. In this paper, we propose model based development approach for embedded software, witch consists of diagram editor and automatic code generator. The diagram editors are implemented by GMF, which include additional functions to solve memory restrictions and concurrent execution problems without OS environment to a automatic code generator. In order to verify the generated code, it will be tested in main control model of UAV by replacing existing module with generated one.

• The Journal of the Korea institute of electronic communication sciences
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• v.5 no.1
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• pp.74-80
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• 2010

We implemented an application system which is able to verify visitor identification for remote bundle control based on OSGi and web camera control using embedded linux system. This system are designed open Oscar framework by porting java on the embedded linux system and implemented web camera system in local area networks. Also This system can verify information of visitor from receiving the data of RFID reader and designed the wireless internet system in home. Basically, in this paper we expect that home network system development and the period of application service development are reduced with integrated service provision based on OSGi.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2006.05a
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• pp.139-140
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• 2006

This paper proposes the Embedded Linux System that can overcome the shortcomings of conventional CNC machine system. Linux is free of charge with the open source library and tools that can be used in the development of Kernel. Besides, Application is easily available through countless open source, allowing simple mending for seamless porting. This study have developed the study about NC Program automation Load System based on Embedded Linux and the ordered controller.

• IEMEK Journal of Embedded Systems and Applications
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• v.16 no.6
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• pp.285-292
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• 2021

Autonomous vehicles are divided into an upper controller that calculates control value through cognitive judgment and a lower controller that appropriately transmits its control value to an actuator. Here, the longitudinal control in a lower controller has a problem as the road slopes due to the property of the Acceleration sensor to output the acceleration as the slope of the device. Therefore, in this paper, a sigmoid function is proposed to determine the slope to compensate for this problem. Through the experiment, Checked performance by comparing the existing table model with the proposed model.

• Proceedings of the SAREK Conference
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• 2003.07a
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• pp.168-168
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• 2003

• Proceedings of the Korean Information Science Society Conference
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• 2012.06a
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• pp.119-121
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• 2012

본 논문에서는 닌텐도 DS를 이용하여, 임베디드 소프트웨어 교육을 수행하기 위한 준비 과정과, 실제 교육 내용을 소개하고, 향후 계획을 공유하고자 한다. 닌텐도 DS는 가격이 저렴한 게임기로 ARM9, ARM7 두 개의 CPU를 가지고 있으며, 기본적인 입출력 장치, 그래픽 가속기, 무선랜 등을 모두 포함하고 있다. 우리는 이 닌텐도 DS에 실시간 운영체제인 FreeRTOS를 이식하고, Eclipse 기반의 IDE 개발 도구 및 원격 디버깅 환경을 구축하였다. 또, 교육 과정에서는 하드웨어의 제어, RTOS의 기본 API의 활용, IPC, 동기화 문제의 해결에 이르는 주제를 포함함으로써 임베디드 소프트웨어 엔지니어가 지녀야할 기본적인 스킬들을 두루 다루는 실습이 되도록 구성하였다. 개발된 교육 환경 및 실습을 위한 강의 자료는 공개 소프트웨어로서 100% 공개되어 누구나 이용할 수 있다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2003.05a
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• pp.233-236
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• 2003

In this paper, we implement embedded Linux intelligent controller for remote monitoring system. Embedded controller as the hard core is consisted of 32 bit CPU and is designed to have processing of real time monitoring and FFT. The prototype monitoring system can operate with world wide web in GUI environment by java. Detailed design and functional analysis for monitoring system are performed by systems approach.

• Journal of Drive and Control
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• v.20 no.4
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• pp.17-26
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• 2023

A forklift is an industrial vehicle that lifts or transports heavy objects using a hydraulically operated fork, and is equipped with an automatic transmission for the convenience of repetitive transportation, loading, and unloading work. The Transmission Control Unit (TCU) is a key component in charge of the shift control function of an automatic transmission. It consists of an electric circuit with an input/output signal interface function and firmware running on a microcontroller. To develop TCU firmware, the development process of shifting algorithm design, firmware programming, verification test, and performance improvement must be repeated. A simulator is a device that simulates a mechanical system having dynamic characteristics in real time and simulates various sensor signals installed in the system. The embedded transmission simulator is a simulator that is embedded in the TCU firmware. information related to the mechanical system that is necessary for TCU normal operation. In this study, an embedded transmission simulator applied to the originally developed forklift TCU firmware was designed and used to verify various forklift shift control algorithms.

• Proceedings of the Korean Information Science Society Conference
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• 2004.04a
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• pp.943-945
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• 2004

임베디드 소프트웨어는 타겟 시스템의 자원과 타이밍에 민감하므로 실제 타겟 시스템과 동일한 환경에서 디버깅해야한다. 이를 위한 기존의 기법들은 타겟 시스템의 자원에 직접적으로 접근하여 시스템 상태를 조사하거나 제어한다. 그러나 이러한 기법들은 내부 신호나 자원에 대한 접근이 제한되어 있는 SoC (System-On-a-Chip) 프로그램을 디버깅하기는 부적합하다. 본 논문에서는 산업 표준화된 JTAG을 기반으로 공개 소프트웨어인 gob를 연동하여 SoC 소프트웨어를 디버깅하는 도구를 제안한다. 따라서 본 도구는 타겟 시스템에 영향을 주지 않고 경제적으로 디버깅할 수 있는 환경을 제공한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2002.04a
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• pp.657-660
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• 2002

현재 Embedded system 에서 많은 기업체들이 리눅스를 채용하고 있고, 이러한 임베디드 리눅스는 실시간 운영체제가 필요한 로봇제어기에서부터 PDA, set-top box등 여러 분야에 걸쳐 응용되고 있다. 본 논문에서는 StrongARM SA-1110 CPU을 이용하여 만들어진 임베디드 시스템에 리눅스를 사용하여 독립형 비전모듈을 개발한 내용을 기술한다. 또한, WinCE 를 사용하여 개발된 비전모듈과의 성능을 비교하여 리눅스를 이용한 독립형 비전모듈을 평가하고, 머신비전 분야에서의 리눅스 응용 가능성을 제시하였다.