• Journal of the Institute of Electronics Engineers of Korea CI
• /
• v.41 no.2
• /
• pp.33-42
• /
• 2004

Controlling household devices using an infra-ray (IR) has a limitation since the IR signal cannot only be extended, but also cannot be transmitted over the physical barrier. Using a radio frequency (RF) may overcome these shortcomings. Bluetooth is one of the emerging RF_based standard protocols for short-range wireless communications among various control devices. In this paper, we describe a control system for household appliances using Bluetooth under embedded Linux environment. The control system consists of a centralized main controller and geographically scattered wallplates. Some of the challenges and lessons learned will be outlined in the presentation. As a result of this research, we found that the Bluetooth is a promising technology for realizing wireless control systems for household appliances.

• Annual Conference of KIPS
• /
• 2003.11a
• /
• pp.377-380
• /
• 2003

본 논문에서는 PC104 모듈을 탑재하여 만들어진 무인 항공 제어 시스템에 관한 내용을 기술한다. 임베디드 리눅스를 사용하여 제작된 항공기 제어 시스템은 디바이스 드라이버와 제어 애플리케이션으로 구성되어 있다. PC104 모듈에는 비행에 필요한 외부 장치들이 연결되는데, 연결된 장치에서 측정한 데이터를 처리하여 애플리케이션으로 전달해 주는 역할을 하는 디바이스 드라이버를 설명하고, 디바이스 드라이버에서 전달받은 데이터를 기반으로 구현한 애플리케이션에 대한 내용을 설명한다. 또한 향후 시스템 운용에 시뮬레이션 기능 구현의 필요성과 RTOS 적용 가능성을 제시해 본다.

• Proceedings of the KIEE Conference
• /
• 2004.07d
• /
• pp.2380-2382
• /
• 2004

In this paper, Web server is built up using PXA255, 32bit RISC processor with porting Embedded Linux and GoAhead, HTTP(Hyper Text Transfer Protocol) web server, and the system with can monitor and control the environment and condition for AICC(Automatic Intelligent Cruise Control) is realized. For sending the operation condition and change of vehicle the desired data is derived by interacting ECU(Electric Control Unit) and Embedded system and the rpm of engine is controlled by step motor connected to throttle value.

• The Journal of the Korea institute of electronic communication sciences
• /
• v.9 no.1
• /
• pp.77-82
• /
• 2014

SD memory cards are widely used in portable digital devices, and most of them exploit NAND flash memory as their storage, so that they have a feature of storing users' important data safely with low costs. In case of using NAND flash memory as storage, however, there is no method to store users' data if memory capacity is insufficient when transferring a large volume of data. This paper proposes a virtual SD memory card system. It used a SD memory card device driver to process data requested from a host by exploiting external storage rather than by exploiting flash memory as a memory core for storing data to the SD memory card. For experiment, it used the FPGA-based SD card slave controller IP on the SMC controller with a S3C2450 ARM CPU to test.

• The Journal of The Korea Institute of Intelligent Transport Systems
• /
• v.13 no.4
• /
• pp.57-62
• /
• 2014

Recently, research activities to develop services for providing safety information to the drivers in fast moving vehicles based on various wireless network technologies such as DSRC (Dedicated Short Range Communication), IEEE 802.11p WAVE (Wireless Access for Vehicular Environment) are widely being carried out. This paper presents a proof-of-concept model based on a robot-car for Dilemma Zone Decision Assistant Service using the wireless LAN technology. The proposed model system consists of a robot-car based on an embedded Linux OS equipped with a WiFi interface and an on-board unit emulator, an Android-based remote controller to model a human driver interface, a laptop computer to run a model traffic signal controller and signal lights, and a WiFi access point to model a road-side unit.