بررسی قابلیت اطمینان با معماری جدید مدل مارکوف گره پشتیبان با نرخ تعمیر و تعویض بهتر و نظارت بیشتر در پرهیز از خرابی شبکه‌های حسگر بی‌سیم صنعتی
محورهای موضوعی : مهندسی برق و کامپیوتراحمدرضا زمانی 1 , محمد علی پور مینا 2 , رامین شقاقی کندوان 3
1 - دانشکده گروه مهندسی مکانیک، برق و کامپیوتر واحد علوم و تحقیقات، دانشگاه آزاد اسلامی، تهران، ایران
2 - دانشکده مهندسی مکانیک، برق و کامپیوتر، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی، تهران، ایران
3 - دانشکده گروه مهندسی برق و کامپیوتر واحد یادگار امام خمینی(ره) شهر ری، دانشگاه آزاد اسلامی، تهران، ایران
کلید واژه: افزونگی گره پشتیبان, تحمل‌پذیری خطا, حسگر آماده‌باش, شبکه‌های حسگر بی‌سیم , قابلیت اطمینان,
چکیده مقاله :
گره‌های حسگر به¬دلیل کاربردهای متنوع محیط‌های عملیاتی، مستعد خرابی هستند. ایده این مقاله، ارایه یک¬معماری جدید با مدل مارکوف برای بهبود قابلیت اطمینان می¬باشد. در اصلاح ایده¬هاي قبل با توجه به خستگي¬كاري، هزينه مصرف انرژي و تعميرات بالا مي¬توان از ایده افزایش نرخ تعمیر و تعویض در پرهیز از خرابی با در¬دسترس¬بودن گره¬های جایگزین با برنامه¬ريزي دقیق تعمیرات ، بهره برد. مزاياي این¬روش کاهش میزان خرابی ، افزایش قابلیت اطمینان، پیاده سازی و استقرار سریع، بهره¬وری انرژی و صرفه¬جویی اقتصادی، بهبود عملکرد و عمر مفید شبکه، کاهش تاخير و جوان¬سازی و پویایی سیستم می¬با¬شد. ساختار روش پیشنهادی با استفاده از حالت خواب و بیداری گره آماده به¬کار سرد یا گرم به¬گونه¬ای است که گره یدکی به موازات گره اصلی قرار می¬گیرد و در صورت آسیب-دیدن یک یا دو گره، سیستم برگشت¬پذیر می¬باشد و می¬توان خرابی را تعمیر یا جایگزین نمود. تکنیک زمان بیکاری و در¬دسترس¬بودن حسگر یدک پشتیبان ، نقش مهمی در کاهش مصرف انرژی دارد. و کارشناسان واحد پشتیباني تنظیمات پیکربندی را به گونه‌ای انجام می¬دهند تا در زمان بیکاری، تجهیزات به حالت خاموشی یا آماده¬به¬کار بروند و در صورت آسیب¬دیدن یک یا دو گره، ابتدا گره یدکی سالم بیدار و در سرویس و سپس گره آسیب¬دیده تعمیر و تعویض ¬و در حالت آماده¬به¬کار یا خواب قرار گیرد. از نتایج حاصل از نوآوري این روش، تأکید بر نظارت سلامتی گره، جلوگیری از خرابی و بهبود نرخ تعمیر و تعویض، کاهش مصرف و بهره¬وری انرژی می‌توان اشاره نمود. نتایج شبیه‌سازی در مقایسه با مدلهای قبل، بهبود بهتری را نشان می¬دهد.
Sensor nodes are prone to failure due to the various applications of operating environments. This paper presents a new architecture with a Markov model to improve reliability. In the modification of the previous ideas, due to work fatigue, energy consumption and high maintenance costs, the idea of increasing the repair and replacement rate to avoid failure with the availability of replacement nodes with detailed planning of the support unit.The advantages of this method are reducing the failure rate, increasing reliability, fast implementation and deployment, energy efficiency and economic savings, improving the performance and useful life of the network, reducing delay and system rejuvenation and dynamics.The structure of the proposed method is by using the sleep and wake mode of the hot or cold standby node in such a way that the spare node is placed parallel to the main node and if one or both nodes are damaged, the system is reversible and. the damage can be repaired or replaced. The technique of idle time and the availability of the backup spare sensor play an important role in reducing energy consumption. The experts of the support unit perform the configuration settings so that the equipment goes to sleep or standby mode during idle time. And if one or two nodes are damaged, first the healthy spare¬node is awake and in service, and then the damaged node is repaired and replaced and placed in standby or sleep mode. The results of the innovation, we can mention the emphasis on node health monitoring, failure avoidance, improving repair and replacement rates and efficiency. The simulation results show a better improvement compared to the previous models.
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