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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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IEMEK Journal of Embedded Systems and Applications
Journal Basic Information
Journal DOI :
Institute of Embedded Engineering of Korea
Editor in Chief :
Volume & Issues
Volume 8, Issue 6 - Dec 2013
Volume 8, Issue 5 - Oct 2013
Volume 8, Issue 4 - Aug 2013
Volume 8, Issue 3 - Jun 2013
Volume 8, Issue 2 - Apr 2013
Volume 8, Issue 1 - Feb 2013
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A Study on FIBEX Automatic Generation Algorithm for FlexRay Network System
Park, Ji-Ho ; Lee, Suk ; Lee, Kyung-Chang ;
IEMEK Journal of Embedded Systems and Applications, volume 8, issue 2, 2013, Pages 69~78
DOI : 10.14372/IEMEK.2013.8.2.069
As vehicles become more intelligent for safety and convenience of drivers, in-vehicle networking systems such as controller are network (CAN) have been widely used due to increasing number of electronic control unit (ECU). Recently, FlexRay was developed to replace CAN protocol in chassis networking systems, to remedy the shortage of transmission capacity and unsatisfactory real-time transmission delay of conventional CAN. However, it is difficult for vehicle network designers to calculate platform configuration registers (PCR) and determine a base cycle or slot length of FlexRay. To assist vehicle network designers for designing FlexRay cluster, this paper presents automatic field bus exchange format (FIBEX) generation algorithm from CANdb information, which is de-facto standard database format for CAN. To design this program, structures of FIBEX, CANdb and relationship among PCR variables are analyzed.
Development and Implementation of the Emergency Call Program for a Welfare for the Elderly
Kim, Jung-Hwan ; Cho, Myeon-Gyun ; Kim, Shik ;
IEMEK Journal of Embedded Systems and Applications, volume 8, issue 2, 2013, Pages 79~85
DOI : 10.14372/IEMEK.2013.8.2.079
This paper proposes a system that utilizes USN(Ubiquitous Sensor Network), Bluetooth and smart phone to improve the function of senior houses. In typical approach, a system in a senior house either directly accesses the status of elderly people by its sensor or is alerted by elderly people who trigger an emergency bell, derive a decision and take an appropriate action. In addition, it is possible for a designated social worker to check the status of senior patients through monitoring system connected by UTP(Unshielded Uwisted Pair) cables, but the responsible person has to be present to monitor patients' status. However, the new system, suggested in this paper, embed Bluetooth function in a blood pressure gauge, thus the smart phone receives patients' health information such as blood pressure through Bluebooth, if any abnormal event occurs. Consequently, the smart phone sends SMS(Short Message Service) to a responsible social worker or a designated hospital. When this program in the paper becomes a reality, an unmanned system that is able to determine suitable actions for certain events will be established, even if a social worker were absence.
Implementation and Performance Evaluation of Vector based Rasterization Algorithm using a Many-Core Processor
Shon, Dong-Koo ; Kim, Jong-Myon ;
IEMEK Journal of Embedded Systems and Applications, volume 8, issue 2, 2013, Pages 87~93
DOI : 10.14372/IEMEK.2013.8.2.087
In this paper, we implemented and evaluated the performance of a vector-based rasterization algorithm of 3D graphics using a SIMD-based many-core processor that consists of 4,096 processing elements. In addition, we compared the performance and efficiency of the rasterization algorithm using the many-core processor and commercial GPU (Graphics Processing Unit) system which consists of 7 GPUs and each of which have 512 cores. Experimental results showed that the SIMD-based many-core processor outperforms the commercial GPU system in terms of execution time (3.13x speedup), energy efficiency (17.5x better), and area efficiency (13.3x better). These results demonstrate that the SIMD-based many-core processor has potential as an embedded mobile processor.
Multi-Antenna based AOA Positioning using Phase Difference
Park, Ik-Hyun ; Yoo, Kook-Yeol ; Park, Yongwan ;
IEMEK Journal of Embedded Systems and Applications, volume 8, issue 2, 2013, Pages 95~102
DOI : 10.14372/IEMEK.2013.8.2.095
In this paper, we have studied the performance of the AOA (Angle of Arrival) in multi-antenna systems for LBS (Location Based Services) and we also analyzed the performance of the AOA in SISO (Single Input Single Output) in multipath environments and their differences. The adequacy of AOA positioning in new communication environments was determined. Currently used positioning methods in 3G communication environment has been developed based on SISO. However, the accuracy of SISO-based TOA (Time of Arrival), TDOA (Time Difference of Arrival), AOA positioning techniques degraded in multipath environments. The communication system will be changed and developed. According to enhanced positioning techniques are required. Using antenna characteristics and the phase difference between antennas of LTE-Advanced standard's key technique MIMO system AOA positioning, and SISO based AOA positioning performance were analyzed. We found that AOA technique potential for use based on Multiple antenna systems by computer simulations.
An Implementation of Automotive Parking Assistance System using Qplus-Auto OSEK Edition
Son, Jeongho ; Kim, Jong Hyo ; Ha, Soo Young ; Kwon, Kee-Koo ;
IEMEK Journal of Embedded Systems and Applications, volume 8, issue 2, 2013, Pages 103~109
DOI : 10.14372/IEMEK.2013.8.2.103
Traditional implementation schemes for automotive electronic control units look simple, but the tradition schemes need so many coarse works to satisfy the user requirements regarding time constraints whenever their microprocessors are changed. Recently, a movement toward using middle-wares, such as OSEK operating system, has risen in automotive industry. In this paper, we describe how to use the features of operating systems to replace traditional firmware based softwares in points of views of services, such as multitask support, preemption, and realtime property. To show an example, we implemented a parking assistance system as a prototype.
Photometric Stereo Calibration using Constraint on Light Source Directions
Jeong, Seong-Cheol ; Nguyen, Viet Hung ; Won, Sang-Chul ;
IEMEK Journal of Embedded Systems and Applications, volume 8, issue 2, 2013, Pages 111~119
DOI : 10.14372/IEMEK.2013.8.2.111
This paper proposes one method on photometric stereo calibration using the constraint on light source directions in which the light sources have the unknown tilt and slant angles but the slant angles are the same. First, the constraint is analyzed based on the equation of linear ambiguity which leads to the conclusion that another constraint should be added to solve the calibration completely. Later, the combination of constraint on light source directions and the constraint that there exists at least six surface patches having known albedos is exploited to resolve the linear ambiguity up to an accurate and close-form solution. The effective performance of the proposed method is demonstrated through experiment results.
Efficient Implementation of Candidate Region Extractor for Pedestrian Detection System with Stereo Camera based on GP-GPU
Jeong, Geun-Yong ; Jeong, Jun-Hee ; Lee, Hee-Chul ; Jeon, Gwang-Gil ; Cho, Joong-Hwee ;
IEMEK Journal of Embedded Systems and Applications, volume 8, issue 2, 2013, Pages 121~128
DOI : 10.14372/IEMEK.2013.8.2.121
There have been various research efforts for pedestrian recognition in embedded imaging systems. However, many suffer from their heavy computational complexities. SVM classification method has been widely used for pedestrian recognition. The reduction of candidate region is crucial for low-complexity scheme. In this paper, We propose a real time HOG based pedestrian detection system on GPU which images are captured by a pair of cameras. To speed up humans on road detection, the proposed method reduces a number of detection windows with disparity-search and near-search algorithm and uses the GPU and the NVIDIA CUDA framework. This method can be achieved speedups of 20% or more compared to the recent GPU implementations. The effectiveness of our algorithm is demonstrated in terms of the processing time and the detection performance.