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This paper proposes a snowboard simulation system that mitigates the risks of snowboarding while allowing for realistic beginner training. The system uses a passive motion platform with tension bands that return the platform to equilibrium when the user is not applying force. This allows the user to make manual changes to board position as they would on a snowy hill. These manual changes in board...
Both network connectivity and hidden terminal effects play a significant role in topology design of wireless sensor networks. In this paper, we present a joint analysis of the two issues. Lots of simulation studies are carried out to investigate the effects of network scale and transmitting range on the two issues. Based on the simulation results, we propose a reasonable and suitable empirical formula...
As distributed systems such as automotive, medical, manufacturing automation become larger and more complex, it is difficult to test these systems. Also, the synchronization of distributed applications make the testing more difficult. In the Software-in-the-Loop (SiL) simulation, a synchronization method among clock of applications is provided for virtual hardware devices and environment. A typical...
The hardware-in-the-loop (HIL) simulation system of spacecraft attitude and orbit control has been studied. In this paper, the composing of the HIL system and the main functions of sub-systems are given. The method to determine the scaling ratio of a simulation system is introduced. A novel communication scheme is designed based on optical reflective fiber memory. The details to design a GNC/dynamic...
There are many applications for which location information plays a crucial role. Finding location information by a sensor node is called the localization problem. The major challenge is to determine the location of unknown nodes based on the known location of other nodes. In this paper, a range-free localization scheme based on fuzzy-logic approach has been proposed. The localization scheme uses the...
Ambient intelligence (AmI) is a discipline that makes the environments we visit everyday sensitive to us by adding sensors to measure our surroundings and actuators to interact with both the environment and the people in it. But the problem emerges when trying to convert a space into an ambient intelligence environment or to modify one that already exists. This is where a simulator could help to arrive...
MIMO technology using cooperative spectrum sensing is a useful way to reduce error and improve the system gain. In this paper, this kind of scenario is used to provide better spectrum utilization in rural areas. The proposed system model is described for Nakagami-m fading model. Graphical analysis of detection probability is shown which is obtained from closed form of analytical solution. Simulation...
In this paper, the mathematical model of an electric vehicle, as well as the control system for avoiding pedestrians in urban traffic is described. The vehicle is modeled as a continuous system consisting of several subsystems. The discrete model of several sensors and actuators, a decision system, and low-level controllers for acceleration/braking and steering systems are added. Based on this model,...
This paper describes the development of a two degree of freedom (DOF) design for automated pedestrian crowd control barrier based on a closed-loop feedback control system. Since most of the barriers existing immobile, static and not adaptable to changing crowd condition, so this work provides an adaptive system that can assume strictly the role of the security man by sensing the crowd and move away...
The aim of this work is to interpret the signals recorded by depth-EEG electrodes in epileptic patients. In particular we focused on understanding the relationship that links between recorded SEEG signals and the underlying epileptic neural populations. For this purpose, we used an extended spatiotemporal source model and solved the forward problem to calculate the contribution of the source activity...
Biogenic nanoporous shells derived from marine diatoms Coscinodiscus wailesii were used for nanoparticle translocation experiments, and the observed ionic current was compared with results of analytical calculation and finite-element simulation. The lateral size ($250~\mu \text{m}$ ) of the shells enabled positioning and immobilization on micromachined silicon substrates. Since these shells have...
We study the software simulation of physical properties of underwater communications, namely, underwater acoustic waves and (de)modulation of underwater acoustic digital data signals. We take into account the mobility of nodes, present in underwater sensor networks. We also consider the integration with protocol layers above the physical layer, i.e., the link and network layers. In this context, mobility...
Onew360 is a training simulator for simulating gas metal arc welding (GMAW) welding. This system is comprised of standard welding hardware components (helmet, gun, work-piece), a PC, a head-mounted display, a tracking system for both the torch and the user's head, and external audio speakers. The track model of welding simulator using single-camera vision measurement technology to calculate the position...
Wireless Sensor Network (WSN) consists of hundreds of sensor nodes, which are tiny, low cost, low power radio devices. These nodes are dedicated to perform certain functions such as sensing the environment, collecting the sensed data from the surrounding area, processing those data and send the information to the observer. One of the major challenges in WSN is to cover the desired area which is used...
This paper continues the authors' former research. It is focused on modelling of an adapting device. The equations used for self-tuning or adaptive systems are adjusted to derive the mathematical model of an adaptronic system and the structural scheme of such system is built based on the scheme of self-tuning system. Adapter is described as open-loop automatic control system with two first-order aperiodic...
In order to improve spectrum utilization efficiency of Cognitive Radio (CR) systems, it is important for Secondary User (SU) to get knowledge about Primary User(PU)'s behavior when SU exploits opportunity to access spectrum. Radio Environment Database has recently been proposed to provide information about PU. Traditional advanced spectrum database constructed based on spectrum sensing method assumes...
Wireless communication technologies are used to collect information from sensitive, hostile and inaccessible environments. They are used in both military and civil applications that include environmental, medical, military and industrial fields. Routing data to a processing center or a base station requires mechanisms for energy conservation at the end of the prolonged lifetime of the network. The...
In this paper we present an advanced model for power consumption in communications. The new model for power consumed in communications takes into consideration parameters power consumption for the active mode, power consumption for the sleep mode, power consumption for the transient mode, transmission period, transient mode duration, sleep mode duration, and active mode duration. The new model for...
We propose to simulate data series of human activities, in order to provide benchmarking for human activity recognition algorithms. Within the French project “AILISA” we recorded 1492 days of data of activity collected with presence sensors in our experimental Health Smart Homes. We built a mathematical model on the data series, based on “Hidden Markov Models” (HMM) and Urn of Polya. The model was...
A research work is performed to analyze the automatic detection performance in a surveillance area by more than three sensors to detect the unknown non-active fixed or moving target or targets. In order to solve the detection ambiguity for the multiple target case caused by the deterministic and the stochastic reason, a self-defined evaluation parameter and several variables are defined and modeled...
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