• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2001년도 춘계종합학술대회
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• pp.700-705
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• 2001

IEEE1394는 내장 리눅스 시스템에 주변 장치를 연결하기 위한 새로운 인터페이스 규격이다. IEEE1394 시스템은 IEEE1394 인터페이스를 가지고 내장 리눅스 시스템과 다수의 주변기기로 구성된다. 본 논문에서는 IEEE-1394를 구현하기 위한 Embedded Linux System의 하드웨어적 기반에 대해 기술하고자 한다. 사용한 하드웨어는 MPC860을 탑재한 보드를 사용했으며, Linux kernel은 안정버젼인 2.2.14를 사용했고, IEEE1394와 관련된 Application을 탑재하여 이에 대한 성능향상 및 실험을 통해 하드웨어적인 인터페이스를 검증하였다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2003년도 학술회의 논문집 정보 및 제어부문 B
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• pp.653-656
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• 2003

We have designed embedded web sewer system and ported Linux operating system version 2.4.5 at our system. And then We implemented to control and monitor widely separated hardware and implemented to monitor widely separated image using CMOS image sensor HV7131B. Web server is the Boa web server with General Public License. We designed for this system using of Intel's SA1110 ARM core base processor and connecting input and output device at GPIO port of SA1110. Device driver of General purpose I/O for Embedded Linux OS is designed. And then the application program controlling driver is implemented to use of common gate interface C language. User is available to control and monitor at client PC. This method have benefit to reduce the Expenditure of hardware design and development time against PC base system and have various and capacious application against firmware base system.

• 스마트미디어저널
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• 제5권4호
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• pp.49-56
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• 2016

무선인터넷이 보급되고 IoT 기술이 발달함에 따라 여러 종류의 센서 디바이스가 발전하였다. 그리고 IoT 환경에서 사용자들의 요구를 충족하는 다양한 서비스 개발을 위해 오픈소스 하드웨어가 도입되었다. 하지만 오픈소스 하드웨어는 개발 인력의 부족으로 인해 충분히 활용되지 못하고 있다. 따라서 본 논문에서는 오픈소스 하드웨어에서 효율적으로 임베디드 소프트웨어 개발을 교육하기 위한 소프트웨어 프레임워크를 제안한다. 제안하는 프레임워크는 비주얼 프로그래밍 언어와 빠른 결과 확인을 통해 다양한 오픈소스 하드웨어에서 빠르고 직관적으로 임베디드 소프트웨어를 개발할 수 있게 한다. 또한 제안한 프레임워크를 실제 오픈소스 하드웨어 개발 환경에 구현하여 장단점을 분석하고 개선방안을 확인하였다.

• 제어로봇시스템학회논문지
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• 제14권3호
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• pp.301-306
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• 2008

Drivers are becoming more fatigued and uncomfortable with increase in traffic density, and this condition can lead to slower reaction time. Consequently, they may face the danger of traffic accidents due to their inability to cope with frequent gear shifting. To reduce this risk, some drivers prefer automatic transmission (AT) over manual transmission (MT). The AT offers more superior drivability and less shifting shock than the MT; therefore, the AT market share has been increasing. The AT is controlled by an electronic control unit (ECU), which provides better shifting performance. The transmission control unit (TCU) is a higher-value-added product, so the companies that have advanced technologies end to evade technology transfer. With more cars gradually using the ECU, the TCU is expected to be faster and more efficient for organic communication and arithmetic processing between the control systems than the l6-bit controller. In this paper, the model of an automatic transmission vehicle using MATLAB/Simulink is developed for the Hardware in-the-Loop (HIL) simulation with a 32-bit embedded system, and also the AT control logic for shifting is developed by using MATLAB/Simulink. The developed AT control logic, transformed automatically by real time workshop toolbox, is loaded to a 32-bit embedded system platform based on Freescale's MPC565. With both vehicle model and 32-bit embedded system platform, we make the HIL simulation system and HIL simulation of AT based on real time operating system (RTOS) is performed. According to the simulation results, the developed HIL simulator will be used for the performance test of embedded system for AT with low cost and effort.

• 대한임베디드공학회논문지
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• 제2권4호
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• pp.214-220
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• 2007

Recently, most embedded systems have the multi-functions mixed the hardware with the software. The existing sequence programming methods are not suitable to implement the embedded system with multi-functions. So, it can be overcome the limit of a facility implementation by introducing the operating system in system. Also, due to the requirement about the better convenient and comfortable meeting or lecture environment, the necessity of electronic white-board is getting higher. Specially, the education using multimedia information is much more desirable for various and improved lecture at the high school and the university. But the sequence program which have been managed in existing electronic white-board system has some difficulties to achieve the software-oriented systems which has to accomplish many functions. In this paper, we propose the method to implement a facility of electronic white-board through using the embedded linux with excellent performance. The embedded linux presents the powerful software environment for the implementation of an embedded system and makes the realization of many various functions easy because it follows kernel characteristics of linux. In this paper, we describe the details for the structure of hardware, kernel source and device driver of a developed electronic white-board.

• 대한임베디드공학회논문지
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• 제14권6호
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• pp.339-346
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• 2019

Multi-axis servo systems are widely used in various fields such as industiral systems for improving production efficiency, robotics and complex systems where many mechanical devices and sensor systems are connected. Such a servo system requires that the servo control technique to realize the synchronization of the drive shaft in the steady state and transient conditions and to control so as to follow the target track in order to improve product precision and production efficiency. In addition, embedded type hardware is required for smooth control of the entire multi-axis system. Therefore, this paper uses hardware based on FPGA which is widely used in digital signal processing field and various control system because hardware design change is easy and parallel processing is possible. In addition, Labview based servo motor control program was studied that can control the servo motor by ensuring the performance and flexibility of the FPGA and follow the target trajectory according to various speed processing and accurate timing synchronization.

• 디지털콘텐츠학회 논문지
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• 제5권1호
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• pp.61-65
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• 2004

본 논문에서는 현재의 IT 분야의 핵심 기술 중에 하나인 임베디드시스템을 하드웨어/소프트웨어 통합설계 방법론에 기초를 두고 구성하는 방법의 한 가지를 제안하였다. 제안한 방법에 기초하여 각 종 진보된 멀티미디어시스템을 구현할 수 있으리라 사료되며, 또한 이를 기반으로 좀 더 진보된 각종 디지털컨텐츠를 구현할 수 있으리라 전망되며, 특히 최근 대두되고 있는 모바일 컨텐츠 구현에 적용이 기대된다.

• 대한임베디드공학회논문지
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• 제16권6호
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• pp.241-246
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• 2021

In this paper, we developed the evaluation system for the active noise control so that the algorithms can be easily evaluated in real-time on the system. We implemented the active noise controller based on a single-chip with only additional op-amps for signal conditioning because the TMS320C280049 MCU includes almost all necessary peripherals for the active noise controller. Due to the difficulty in testing algorithms on embedded-type hardware unlike in computer simulation, we also developed GUI-based evaluation software which makes it simple to test algorithms on the hardware. Using the GUI software, we can optimize the parameters of the algorithms with ease in a specific noise environment because the parameters can be adjusted in real-time when the algorithm is running on the hardware.

• 대한임베디드공학회논문지
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• 제6권3호
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• pp.117-123
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• 2011

In this paper, we design the hardware platform and implement the embedded software based on the FPGA and the DSP for the automotive 77GHz FMCW radar system. This embedded software is built into the DSP as the multi-tasking architecture to support the basic target detection algorithm and the Ethernet link. The designed GUI(Graphic User Interface) provides ability to adjust parameters associated with the radar performance, to monitor signal processing results, and to download the raw received signal. The designed platform can be used to develop the optimal detection algorithms for the various applications.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2021년도 춘계학술대회
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• pp.600-602
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• 2021

모바일 산업의 발달과 인공지능 기술에 대한 관심이 높아지면서 임베디드 시스템에 적용 가능한 인공지능 프로세서에 대한 연구가 활발히 진행되고 있다. 임베디드 시스템에서 인공지능을 구현하는 경우 제한된 자원과 소비 전력을 고려한 설계가 필수적이며, 낮은 연산 성능을 보완할 수 있는 전용 가속기를 포함하는 것이 효율적이다. 본 연구는 독립 운용이 가능한 임베디드 인공지능 프로세서를 제안한다. 제안하는 인공지능 프로세서는 거리연산 기반의 경량 인공지능 알고리즘이 적용된 하드웨어 가속기를 포함하며, 프로그래밍 가능한 범용 프로세서와 함께 운용되어 다양한 임베디드 시스템에 적용 가능하다. 인공지능 프로세서는 Verilog HDL을 사용하여 설계되었으며 Field Programmable Gate Array (FPGA)를 통해 기능을 검증하였다.