Synthesis of Compromise-Optimal Trajectories of Mobile Objects in Conflict Environment

Contamination of hazardous chemicals is currently considered one of the major environmental problems. The methods of purification of gaseous emissions depending on the physicochemical properties of pollutants, in particular dangerous chemical, their aggregate state, concentration in the gas environment are studied in this article. The effect of aerosol content such as dust and soot is analyzed as well as the efficiency of purification methods at different temperature intervals, methods of purification of multicomponent mixtures. The comparative characteristics of thermochemical, reagent, sorption and catalytic methods are given and the prospects of their application in filtering systems of stationary and mobile objects are evaluated. It has been proved that almost any organic compounds can be oxidized (mineralized) on the TiO2surface. In practice, any photocatalytic air purifier includes a porous TiO2 deposited carrier, which is irradiated with ultraviolet rays and through which air is purged. Photocatalysis is suitable for domestic use as it can occur at room temperature. For example, a thermocatalytic method of destroying harmful substances requires preheating the air to a temperature above 200 ° C. Photocatalysis destroys substances that penetrate even through activated carbon filters. Features of formation of oxide coatings by plasma-electrolytic oxidation of titanium alloys are considered. It is proposed to refine the design of collective defense systems on armored vehicles and stationary facilities with additional installation in the filter-absorber of the grid with the deposited layer of catalytic material, which will neutralize various types of dangerous chemicals due to photocatalytic air purification.

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Energy-efficient Tracking of Mobile Objects with Early Distance-based Reporting

2007 Fourth Annual International Conference on Mobile and Ubiquitous Systems: Networking & Services (MobiQuitous) ◽

10.1109/mobiq.2007.4450984 ◽

2007 ◽

Cited By ~ 8

Author(s):

Tobias Farrell ◽

Ralph Lange ◽

Kurt Rothermel

Keyword(s):

Energy Efficient ◽

Mobile Objects

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Utilizing RFID Signaling Scheme for Localization of Stationary Objects and Speed Estimation of Mobile Objects

2007 IEEE International Conference on RFID ◽

10.1109/rfid.2007.346155 ◽

2007 ◽

Cited By ~ 36

Author(s):

Paul Wilson ◽

Daniel Prashanth ◽

Hamid Aghajan

Keyword(s):

Speed Estimation ◽

Mobile Objects ◽

Stationary Objects

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Hydrodynamics can determine the optimal route for microswimmer navigation

Communications Physics ◽

10.1038/s42005-021-00522-6 ◽

2021 ◽

Vol 4 (1) ◽

Author(s):

Abdallah Daddi-Moussa-Ider ◽

Hartmut Löwen ◽

Benno Liebchen

Keyword(s):

Flow Field ◽

Hydrodynamic Interactions ◽

Optimal Trajectories ◽

Optimal Route ◽

Active Particles ◽

Navigation Strategy ◽

Navigation Strategies

AbstractAs compared to the well explored problem of how to steer a macroscopic agent, like an airplane or a moon lander, to optimally reach a target, optimal navigation strategies for microswimmers experiencing hydrodynamic interactions with walls and obstacles are far-less understood. Here, we systematically explore this problem and show that the characteristic microswimmer-flow-field crucially influences the navigation strategy required to reach a target in the fastest way. The resulting optimal trajectories can have remarkable and non-intuitive shapes, which qualitatively differ from those of dry active particles or motile macroagents. Our results provide insights into the role of hydrodynamics and fluctuations on optimal navigation at the microscale, and suggest that microorganisms might have survival advantages when strategically controlling their distance to remote walls.

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VAGADRONE: Intelligent and Fully Automatic Drone Based on Raspberry Pi and Android

Applied Sciences ◽

10.3390/app11073153 ◽

2021 ◽

Vol 11 (7) ◽

pp. 3153

Author(s):

Saifeddine Benhadhria ◽

Mohamed Mansouri ◽

Ameni Benkhlifa ◽

Imed Gharbi ◽

Nadhem Jlili

Keyword(s):

Remote Control ◽

Autonomous Navigation ◽

Object Identification ◽

External Control ◽

Raspberry Pi ◽

Optimal Trajectories ◽

Live Streaming ◽

Wide Range ◽

Fully Automatic ◽

Direct Use

Multirotor drones are widely used currently in several areas of life. Their suitable size and the tasks that they can perform are their main advantages. However, to the best of our knowledge, they must be controlled via remote control to fly from one point to another, and they can only be used for a specific mission (tracking, searching, computing, and so on). In this paper, we intend to present an autonomous UAV based on Raspberry Pi and Android. Android offers a wide range of applications for direct use by the UAV depending on the context of the assigned mission. The applications cover a large number of areas such as object identification, facial recognition, and counting objects such as panels, people, and so on. In addition, the proposed UAV calculates optimal trajectories, provides autonomous navigation without external control, detects obstacles, and ensures live streaming during the mission. Experiments are carried out to test the above-mentioned criteria.

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Large-Scale Object Monitoring in Internet-of-Things: Energy-Efficient Perspectives

Electronics ◽

10.3390/electronics10040461 ◽

2021 ◽

Vol 10 (4) ◽

pp. 461

Author(s):

Yongbin Yim ◽

Euisin Lee ◽

Seungmin Oh

Keyword(s):

Energy Efficient ◽

Large Scale ◽

Future Research ◽

Technological Evolution ◽

Node Density ◽

Mobile Objects ◽

Research Challenges ◽

Energy Efficient Communication ◽

Efficient Communication ◽

Architectural Principles

Recently, the demand for monitoring a certain object covering large and dynamic scopes such as wildfires, glaciers, and radioactive contaminations, called large-scale fluid objects (LFOs), is coming to the fore due to disasters and catastrophes that lately happened. This article provides an analytic comparison of such LFOs and typical individual mobile objects (IMOs), namely animals, humans, vehicles, etc., to figure out inherent characteristics of LFOs. Since energy-efficient monitoring of IMOs has been intensively researched so far, but such inherent properties of LFOs hinder the direct adaptation of legacy technologies for IMOs, this article surveys technological evolution and advances of LFOs along with ones of IMOs. Based on the communication cost perspective correlated to energy efficiency, three technological phases, namely concentration, integration, and abbreviation, are defined in this article. By reviewing various methods and strategies employed by existing works with the three phases, this article concludes that LFO monitoring should achieve not only decoupling from node density and network structure but also trading off quantitative reduction against qualitative loss as architectural principles of energy-efficient communication to break through inherent properties of LFOs. Future research challenges related to this topic are also discussed.

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