Energy efficient TDMA access technique for surveillance in terrestrial sensor networks

Abstract

The terrestrial sensor networks, which are one of the application areas of sensor networks, are now widely used for monitoring and security operations. The wireless sensor networks are a combination of different sensors placed on a small embedded device to examine characteristics of a given region such as temperature, humidity, pressure, movement. The wireless sensor network must be located at the intersection points of these zones to continuously monitor a specific area. In this article, a monitoring system based on the wireless sensor network is created. The sensor nodes used for monitoring were developed in a simulation environment. The structure, hardware and workflow of wireless sensor network nodes are designed. TDMA protocol has been chosen as the medium access technique in order to ensure that the designed system operates in an energy-efficient manner and that packet collisions are not experienced. The simulation results show that the sensor network has the ability to quickly collect media information and transmit data to the processing center in real time. In addition, the system we proposed suggests the usefulness of wireless sensor networks in the terrestrial area.

Keywords

• Sensor network,medium access,terrestrial

Karasal algılayıcı ağlarda gözlemleme için enerji etkin TDMA erişim tekniği

Abstract

Algılayıcı ağların uygulama alanlarından biri olan karasal algılayıcı ağlar, gözlemleme işlemleri için günümüzde yaygın olarak kullanılmaktadır. Kablosuz algılayıcı ağlar, belirli bir bölgenin sıcaklık, nem, basınç, hareket gibi karakteristiklerini incelemek amacıyla küçük bir gömülü cihaz üzerine yerleştirilmiş farklı algılayıcıların birleşimi olarak karşımıza çıkmaktadır. Sürekli olarak belirli bir bölgeyi izlemek için kablosuz algılayıcı ağın bu bölgelerin kesişme noktalarında yer alması gerekmektedir. Bu makalede, kablosuz algılayıcı ağına dayalı bir gözlemleme sistemi oluşturulmuştur. Kırsal bölgelerdeki belirli bir arazinin ne tür meyve – sebze yetiştiriciliğine uygun olduğunu tespit etmek amacıyla sıcaklık, nem, basınç, vb. değerlerin sezilmesi düşünülmüştür. Gözlemleme için kullanılan algılayıcı düğümler benzetim ortamında geliştirilmiştir. Kablosuz algılayıcı ağ düğümlerinin yapısı, donanımı ve iş akışı tasarlanmıştır. Tasarlanan sistemin enerji verimli olarak çalışması ve paket çarpışmalarının yaşanmaması için ortam erişim tekniği olarak TDMA protokolü seçilmiştir. Benzetim sonuçları, algılayıcı ağın ortam bilgilerini hızlı bir şekilde toplama ve veriyi gerçek zamanlı olarak işleme merkezine aktarma yeteneğine sahip olduğunu göstermektedir. Ayrıca, önerdiğimiz sistem karasal alandaki kablosuz algılayıcı ağların kullanışlılığını ortaya koymaktadır.

Keywords

• Algılayıcı ağ,ortam erişim,karasal

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