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In this paper, we present Intercom, a simulator framework that provides separate components to address the interdependent aspects of IoT systems, such as sensing, physical interaction, wireless communication, and computation. We initially evaluate a scalable sensing and communication model, which simulates wireless signal strength measurements with an average error of 6.1dBm.
Heterogeneous computing is a growing trend in recent computer architecture design and is often used to improve the performance and power efficiency for computing applications by utilizing the special-purpose processors or accelerators, such as the Graphic Computing Unit (GPU), Field Programmable Gate Array (FPGA) and Digital Signal Processor (DSP). With the increase of complexity, the interaction...
This paper presents an improved ISI shaping technique for multi-bit ΔΣ DACs. Compared to the prior ISI shaping method (Lars Risbo et al, JSSC, 2011) that monitors only the up (0 → 1) transitions, the proposed technique makes use of both the up and down (1 → 0) transitions with negligible hardware cost. It provides a finer control of the transition activity, thereby improving the ISI shaping effect...
This paper aims to present applications of Computational, which uses the method of genetic algorithms to improve the flight paths of UAVs, applied in a simulator with a hardware Man-in-the-loop.
Wireless sensor networks (WSNs) have been widely used for monitoring applications. However, due to the rigorous deployment environment, reliable operation of WSNs is difficult to guarantee. Thus, the assurance of WSN reliability should be concerned in order to measure physical quantities correctly and effectively, as well as to maximize the lifetime of the system. In this paper, concerns of WSN reliability...
The management of multiple systems such as machine tools, vehicles, aircraft, among others, results in a very intense flow of data between the server and embedded systems, using wired and/or radio frequency structures, demanding performance and interest in real time systems. The objective of this study is to propose a low cost scalable architecture for embedded applications, using pools of personal...
We describe the implementation of a real-time control system that manages arrays of pumps, valves and pressure transducers as a subsystem of a simulator for cardiac surgery training. The subsystem is responsible for maintaining an appropriate fluid pressure in the aorta of the heart, and for circulating fluid around the heart, in a manner consistent with a cardiopulmonary bypass machine - both before...
The management of multiple systems such as machine tools, vehicles, aircraft, among others, results in a very intense flow of data between the server and embedded systems, using wired and/or radiofrequency structures, demanding performance and interest in real time systems. The objective of this study is to propose a low cost scalable architecture for embedded applications, using pools of personal...
The performance of a software system has been a major concern of the information technology services industry since its inception in the early 1960's. Up to now, simulation has been a key technique for gaining an understanding of the performance characteristics of the system during development time, while software tools, possibly together with manual operations, have been used to monitor some performance...
As sensor networks are finding widespread use across many applications, designers increasingly must not only focus on application development, but also on sensor network optimizations. Given the complexities of sensor networks and the difficulty of analyzing the long-term effects of design changes within a deployed system, simulation is often the only feasible option for evaluating such optimizations...
TinyOS is an open source operating system for wireless sensor networks developed by the University of California at Berkeley, aimed at the character of sensor network. In TinyOS environment, the system not only provides a powerful simulation tool to ensure the accuracy of the system, the system also provides a series of tools to simplify the development of the system, using these tools can greatly...
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