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AUTOSAR 플랫폼 기반 CDD를 활용한 비휘발성 메모리 수명 연장 기법
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- Issue Date
- 2013-10
- Citation
- 대한임베디드공학회논문지, v.8, no.5, pp.235-242
- ISSN
- 1975-5066
- Publisher
- 대한임베디드공학회
- Language
- Korean
- Type
- Journal Article
- Abstract
- Recently, the number of automotive electrical and electronic system has been increased because the requirements for the convenience and safety of the drivers and passengers are raised. In most cases, the data for controlling the various sensors and automotive electrical and electronic system used in runtime should be stored on the internal or external non-volatile memory of the ECU(Electronic Control Units). However, the non-volatile memory has a constraint with write limitation due to the hardware characteristics. The limitation causes fatal accidents or unexpected results if the non-volatile memory is not managed. In this paper, we propose a management scheme for using non-volatile memory to prolong the writing times based on AUTOSAR(AUTOmotive Open System Architecture) platform. Our proposal is implemented on the CDD(Complex Device Driver) and uses an algorithm which swaps a frequently modified block for a least modified block. Through the development of the prototype, the proposed scheme extends the lifetime of non-volatile memory about 1.08 to 2.48 times than simply using the AUTOSAR standard.
- KSP Keywords
- Automotive Open System Architecture, Device driver, Electronic control units(ECUS), Electronic system, Fatal accidents, management scheme, non-volatile memory(NVM or NVRAM)