• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.12 no.4
• /
• pp.1947-1953
• /
• 2011

OSEK/VDX is a joint project aiming at an industry standard for ECUs in vehicles and OSEK OS is a real-time operating system that meets OSEK/VDX specifications. In this paper, we suggest an implementation of task switching and interrupt handling mechanisms of OSEK operating system based on ARM processors. Considering the requirements of OSEK OS and characteristics of ARM processor, we have designed task switching and interrupt handling mechanisms. For evaluating the validation of the suggested mechanisms, we have checked the functional correctness on an experimental embedded board with ARM processor and calculated the time of task switching and interrupt handling.

• The Journal of the Institute of Internet, Broadcasting and Communication
• /
• v.13 no.5
• /
• pp.1-8
• /
• 2013

This paper implements an integrated vehicle chassis system of ACC(Adaptive Cruise Control) and LKS(Lane Keeping System) based on OSEK OS to vehicle operating system and analyzes its performance through experiments. In recent years active safety and advanced driver assistance system has discussed to improve safety of vehicle. Among the rest, We integrate ACC that controls longitudinal velocity of vehicle and LKS that assists a vehicle in maintaing its driving lane, then implement integrated control system in vehicle. Implemented control system uses OSEK/VDX proposed standard, which is aiming at reusability and safety of software for vehicle and removal hardware dependence of application software. Redesigned control system based on OSEK OS, which is supported by OSEK/VDX, can manage real-time task, process interrupt and manage shared resource. We show by results performed EILS(ECU-In-the-Loop Simulation) that OSEK OS-based integrated controller of ACC and LKS is equivalent conventional integrated controller of ACC and LKS.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2010.11a
• /
• pp.1526-1528
• /
• 2010

OSEK/VDX OS 는 자동차 전자 제어 장치(ECU)를 위하여 OSEK/VDX 에서 제안한 사양을 준수하는 실시간 운영체제이다. 시스템 생성기는 OIL 언어로 작성된 파일을 C 언어의 중간 코드 파일로 변환하기 위한 도구로써 OSEK/VDX OS 개발에 필요한 요소이다. 본 연구에서는 OSEK/VDX OS 개발에 필요한 시스템 생성기를 보다 쉽게 구현할 수 있는 기법을 제시하였다.

• Transactions of the Korean Society of Automotive Engineers
• /
• v.17 no.3
• /
• pp.127-141
• /
• 2009

While the ever-increasing complexity of automotive software systems can be effectively managed through the adoption of a reliable real-time operating system (RTOS), it may incur additional resource usage to a resultant system. Due to the mass production nature of the automotive industry, reducing physical resources used by automotive software is of the utmost importance for cost reduction. OSEK OS is an automotive real-time kernel standard specifically defined to address this issue. Thus, it is very important to develop and exploit kernel mechanisms such that they can achieve minimal resource usage in the OSEK OS implementation. In this paper, we analyze the task subsystem, resource subsystem, application mode and conformance classes of OSEK OS as well as the OSEK Implementation Language (OIL). Based on our analysis, we in turn devise and implement kernel mechanisms to minimize the dynamic memory usage of the OSEK OS implementation. Finally, we show that our mechanisms effectively reduce the memory usage of OSEK OS and applications.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2009.10a
• /
• pp.861-865
• /
• 2009

Technical development in car has utilized electronic controls (ECU, Electronic Control Unit) recently if was achieved machine such as engine performance in priority and electronic side technical development that improve safety, convenience, expense etc. is proceeded vigorously. Also, preference of consumers for car is various model's number according to change at the fast speed and complexity of software required from vanguard service development was increased greatly. Software development expense dominated considerable weight in car manufacture expense by such change and automakers established OSEK/VDX that is standard of automobile embeded system to reuse application software by module to respond this and transplant easily to other control device. Do when search about all item that is necessary in real-time OS structure that examines OSEK/VDX standard that is presented as the alternative to respond environment that change rapidly that refer in dignified mien after it is original, and uses actuality OSEK/VDX.

• Journal of the Korean Society for Precision Engineering
• /
• v.23 no.9 s.186
• /
• pp.31-38
• /
• 2006

• Proceedings of the KIEE Conference
• /
• 2001.11c
• /
• pp.149-151
• /
• 2001

In real-time control system, it is essential to confirm the timing behavior of all tasks because these tasks of real-time controller have to finish their processes within the specified time intervals called a deadline. In order to satisfy this objective, the timing analysis of a real-time system such as a schedulability test must be performed during the system design phase. This paper presents a Matlab toolbox for simulation of real-time control system based on OSEK-OS, which is one of the most widely adopted real-time operating systems in automotive industry. The toolbox allows the user to explore the timely behavior of control algorithms, and to study the interaction between the object of the OSEK-OS, such as task, scheduler and resource etc.

• Journal of Institute of Control, Robotics and Systems
• /
• v.16 no.6
• /
• pp.559-565
• /
• 2010

In this paper, we present a transformation method of source code from a POSIX (Portable Operating System Interface) based source code into an OSEK/VDX (Offene Systeme und deren Schnittstellen fur die Elektronik in Kraftfahrzeugen/Vehicle Distributed eXecutive) source code. As the electronic parts of automobile systems increase, the use of embedded software in automobile systems is also growing. Accordingly, many electronic systems are designed in automobile system with OSEK/VDX. Otherwise, one of the major problems of embedded software would be portability to other OS's. To enhance the portability and interoperability of embedded software, we propose a source code transformation method from POSIX to OSEK/VDX based on API (Application Programming Interface) translation method. Considering the characteristics of the OSEK/VDX which uses OIL (OSEK/VDX Implementation Language) standard, transformation process is performed with source code transformation and OIL code generation. For the validity of the proposed method, the transformation experiment is given using Micro-C OS II and OSEK/VDX with XC167CI micro-controller.

• Proceedings of the KIEE Conference
• /
• 2008.04a
• /
• pp.143-144
• /
• 2008

본 논문에서는 차량용 실시간 운영체제인 OSEK/VDX가 어떠한 구조로 이루어졌는지 알아보고 간단한 Application에 응용해 보았다. OSEK/VDX의 표준화 되어있는 기본 구성요소인 OS, COM, NM, OIL에 대하여 각각의 기능에 대하여 소개하고 OIL파일을 작성해서 ECU에 적용하기 위한 설계 가이드를 제시한다.

• Transactions of the Korean Society of Automotive Engineers
• /
• v.11 no.1
• /
• pp.166-171
• /
• 2003

This paper presents the algorithms and Matlab Toolbox for co-simulation of distributed real-time control system based on OSEK-OS and CAN protocol. This toolbox enables the developers to analyze the timing uncertainty, which is caused by resource sharing including shared memories and networks, and to take the timing uncertainty into consideration in the early design phase. Furthermore, this toolbox helps the developers to model the behaviors of a control system by providing graphical user interface for objects of OSEK-OS and CAN. To prove the feasibility of this toolbox, a vehicle body network system is modeled with this toolbox, and the timing uncertainties are analyzed.