Indoor localization algorithm has low precision and high cost. Based on the VIRE algorithm, this paper proposes a RFID technology based on particle swarm optimization algorithm. Firstly, the improved threshold of wavelet algorithm to the read signal for de-noising and reduce the signal strength value fluctuations generated error; and then the weighted localization to improve the positioning acc...

A virtual instrument for time–frequency analysis is presented. Its realization is based on an order recursive approach to the time–frequency signal analysis. Starting from the short time Fourier transform and using the S-method, a distribution having the auto-terms concentrated as high as in the Wigner distribution, without cross-terms, may be obtained. The same relation is used in a recursive ...

In this paper we evaluate the effectiveness in conveying speech information of a speech synchronized facial animation system based on context-dependent visemes. The evaluation procedure is based on an oral speech intelligibility test conducted with, and without, supplementary visual information provided by a real and a virtual speaker. Three situations (audio-only, audio+video and audio+animati...

Background and Objectives: Virtual inertia control, as a component of a virtual synchronous generator, is used for the implementation of synchronous generator behaviour in microgrids. In microgrids that include high-capacity distributed generation resources, in addition to virtual inertia, virtual damping can also lead to improvement of frequency stability of the microgrid. The purpose of the c...

The design and development of cost effective rehabilitation aids is a challenging task for biomedical research community. The biopotentials such as EEG, EMG, ECG and EOG that are generated from human body help in controlling the external electronic devices. In the recent years, the EOG based assistive devices have gained importance in assisting paralyzed patients, due to their ability to perfor...

Multidisciplinary Labs are becoming increasingly important with convergence of technologies. Continuing budget cuts make it difficult to fund new infrastructure such as physical labs and alternatives that enable educators to reuse existing labs are needed. With the evolution of the desktop and graphical design technologies based on Virtual Instrumentation, it is now possible to implement multid...

This paper proposes the fractional component analysis (FCA), whose goal is to decompose the observed signal into component signals and recover their fractions. The uniqueness of our idea in comparison with other similar methods is the concept of the virtual PDF (probability distribution function) that models signal mixing on the sensor. In this paper, we derive the virtual PDF based on positivi...

The gases emissions measurement systems in internal combustion engines are strict and expensive nowadays. For this reason, a virtual instrument was developed to measure the combustion emissions from an internal combustion diesel engine, running with diesel-biodiesel mixtures. This software is called virtual instrument for emissions measurement (VIEM), and it was developed in the platform of Lab...

OBJECTIVE This study investigated the effects of both noise and reverberation on the ability of listeners with bilateral cochlear implants (BCIs) to localize and the feasibility of using a virtual localization test to evaluate BCI users. DESIGN Seven adults with normal hearing (NH) and two adults with BCIs participated. All subjects completed the virtual localization test in quiet and at 0, -...

We present a signal processing system with virtual instrumentation of a MEMS sensor to detect magnetic flux density for biomedical applications. This system consists of a magnetic field sensor, electronic components implemented on a printed circuit board (PCB), a data acquisition (DAQ) card, and a virtual instrument. It allows the development of a semi-portable prototype with the capacity to fi...