بررسی تغییرات داده محیطی در ارسال داده توسط حسگرها بر طول عمر شبکه‌های حسگر بی‌سیم

زارع پور احمدآبادی, جمال; ابراهیمی, کوثر

بررسی تغییرات داده محیطی در ارسال داده توسط حسگرها بر طول عمر شبکه‌های حسگر بی‌سیم

نوع مقاله : مقاله پژوهشی

نویسندگان

¹ استادیار، دانشگاه یزد،یزد،ایران

² دانشجوی کارشناسی ، دانشگاه یزد،یزد،ایران

چکیده

یکی از مهم‏ترین چالش‏ها در حوزه شبکه‏‏‌‎‏‎های حسگر بی‏‏‌‎‏‎سیم محدودیت انرژی حسگرها است که مستقیماً با طول عمر شبکه در ارتباط است. تاکنون تلاش‏‏‌‎‏‎های بسیاری در جهت کاهش مصرف انرژی حسگرها انجام شده است تا بدین‌وسیله با افزایش طول عمر شبکه، میزان بهره‏‏‌‎‏‎وری از شبکه‏‏‌‎‏‎های حسگر بی‏‏‌‎‏‎سیم افزایش یابد. یکی از عوامل مؤثر بر مصرف انرژی حسگرها، محیط اطراف آن‌ها می‌باشد. در بسیاری از روش‌های موجود، فرض می‌شود که حسگرها در تمام مراحل، داده‌های دریافتی خود را ارسال می‌کنند درحالی‌که ممکن است محیط یا بخشی از آن نسبت به مرحله قبل تغییری نداشته باشد و درنتیجه برخی از این حسگرها در تمام مراحل چرخه حیات خود، داده‌های جدیدی جهت ارائه نداشته باشند. در این مقاله باتوجه‌به میزان تغییرات محیط اطراف شبکه‏های حسگر بی‏سیم، روشی سازگار با محیط ارائه شده است که در هر مرحله، فقط حسگرهایی که اطلاعات دریافتی آن‌ها نسبت به مرحله قبل تغییر قابل‌توجهی داشته باشد، اقدام به ارسال داده می‌کنند و درصورتی‌که تغییرات آن‌ها قابل‌توجه نباشد، تنها بسته‌های کنترلی کم‌حجمی را جهت اعلام زنده‌بودن ارسال می‌کنند. نتایج شبیه‎سازی نشان از حداقل 63/16 افزایش طول عمر شبکه دارد.

کلیدواژه‌ها

20.1001.1.23224347.1403.12.3.2.4

موضوعات

دفاع الکترونیک (لیزری، الکترواپتیکی، آکوستیکی)

عنوان مقاله [English]

Investigating the Impact of Environmental Data Changes on the Lifetime of Wireless Sensor Network

نویسندگان [English]

Jamal Zarepour-Ahmadabadi ¹
kowsar Ebrahimi ²

¹ Assistant Professor, Yazd University, Yazd, Iran

² Bachelor student, Yazd University, Yazd, Iran

چکیده [English]

One of the most important challenges for wireless sensor networks is the limitation of energy of sensors, which is directly related to the lifetime of the network. So far, many researchers tried to decrease the energy consumption of sensors, thus increase the lifetime and the efficiency of wireless sensor networks. One of the factors affecting the energy consumption of sensors is their environment. In many existing methods, it is assumed that the sensors send their sensed data at all stages, while the environment or some parts of it may not change from the previous stage, and as a result, some of the sensors may not have new data to provide at all stages. In this paper, an environmentally-aware approach is presented, where only sensors, that have sensed significant changes in their sensed information from previous step, will send their data to the base station. If their changes are insignificant, they will only send small control packets to indicate being alive. The simulation of the proposed algorithm, which is based on the probability of changes in the environment, shows at least 16.63% increase network`s lifetime.

کلیدواژه‌ها [English]

Wireless sensor networks
Changes rate of environment
Energy consumption
Lifetime of wireless sensor networks

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