ادغام داده‌ها بین حسگرهای مختلف می‌تواند موجب استخراج اطلاعات با دقت و کیفیت بالاتر گردد بهبود تشخیص تهدیدهای هسته‌ای را به همراه داشته باشد. در این تحقیق، ردیابی چشمه متحرک استفاده از تلفیق داده­های سیستم آشکارساز پرتوی دوربین نظارتی مورد مطالعه قرار گرفت است. بدین منظور الگوریتمی جهت ایجاد همبستگی تصاویر دریافتی توسط شمارش طراحی شده است تا مسیر حرکت جسمی که بیش­ترین ثبت آشکارسازی دارد عنوان ا...

This paper discusses the background and application requirements that motivated the development of TinyOS. It enumerates the characteristics associated with any typical Networked Sensor application. The hardware platform that was used for deploying TinyOS is also described. The design aspects of the Event based TinyOS is discussed in detail. This paper also enlightens the Tiny Active Messaging ...

Many of the sensors finding their way into sensor networks run a lightweight operating system developed at U.C. Berkeley called TinyOS. This open-source operating system, designed specifically for highly-constrained wireless devices, enables building a variety of applications using highly modular code. Over one hundred groups worldwide, and several company products, use TinyOS. Our main contrib...

Sensor network applications should be reliable. However, TinyOS, the dominant sensor net OS, lacks basic building blocks for reliable software systems: memory protection, isolation, and safe termination. These features are typically found in general-purpose operating systems but are believed to be too expensive for tiny embedded systems with a few kilobytes of RAM. We dispel this notion and sho...

Tasks in TinyOS execute non-preemptively and run to completion, forcing programmers to keep individual tasks short and spread lengthy operations across multiple tasks – a major divergence from conventional programming paradigms. This report documents our attempt to incorporate multi-tasking into TinyOS and its subsequent effect on power consumption of “motes”. We succeeded in modifying the Tiny...

TinyOS is a component-based operating system designed for wireless embedded sensor networks. TOSSIM provides discrete event simulation of homogeneous TinyOS programs at the interrupt level. This paper presents PtinyOS, an integrated development environment built in Ptolemy II for developing and simulating heterogeneous TinyOS programs. PtinyOS will allow application developers to easily transit...

Simulation tools for networked devices are a valuable resource to speed up software development. • TOSSIM (TinyOS SIMulator)[1] is a network simulator that is part of TinyOS [2] (an operating system for networked wireless sensors). • The CC2420 chip [3] is a radio frequency transciever used in many wireless sensor devices. The TOSSIM maintained as part of the main TinyOS trunk does not implemen...

Wireless sensor networks are envisioned to be deployed in the absence of permanent network infrastructure and in environments with limited or no human accessibility. Hence, such deployments demand mechanisms to remotely (i.e., over the air) reconfigure and update the software on the nodes. In this paper we introduce DyTOS, a TinyOS based remote reprogramming approach that enables the dynamic ex...