Metal oxide rods and dots-based structures and devices: cost-effective fabrication and surface chemistry control

2009 ◽  
Vol 1209 ◽  
Author(s):  
Lionel Vayssieres
Keyword(s):  
Low Cost ◽  
Surface Acidity ◽  
Cost Effective ◽  
New Materials ◽  
Materials Development ◽  
Environment And Health ◽  
Energy Environment ◽  
Improved Stability ◽  
And Control ◽  
Quantum Confinements

AbstractThe necessity of materials development which is not limited to materials that can achieve their theoretical limits, but makes it possible to raise theoretical limits by changing the fundamental underlying physics and chemistry while keep the fabrication cost to a minimum is crucial. Materials nanotechnologies based on chemical fabrication approaches is one of the immediate answer to the enormous need for cost-effective new materials for energy, environment, and health. R&D exploiting chemical nanoscience and nanotechnology has the greatest potential to efficiently contribute to such challenging goals. Indeed, the creation of new materials with higher performance and improved stability achieved by atomic, molecular and nanostructural design and control using unique nanoscale phenomena such as quantum confinements is the key. A synthesis involving the aqueous condensation of metal ions from solutions of metal salts for the low-cost fabrication of engineered arrays consisting of oriented nanorods of metal oxides orientations onto various substrates as well as the ability to control the surface acidity of quantum dots from acidic to neutral to basic by size effect are presented.

scholarly journals A Cost-Effective Embedded Platform for Greenhouse Environment Control and Remote Monitoring

Agronomy ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 936 ◽  
Author(s):  
Radu L. Sumalan ◽  
Nicoleta Stroia ◽  
Daniel Moga ◽  
Vlad Muresan ◽  
Alexandru Lodin ◽  
...  
Keyword(s):  
Remote Monitoring ◽  
Low Cost ◽  
Cost Effective ◽  
Agricultural System ◽  
Control Network ◽  
Monitoring And Control ◽  
Embedded Platform ◽  
Environment Control ◽  
Functional Features ◽  
And Control

This paper presents the development of a cost-effective automatic system for greenhouse environment control. The architectural and functional features were analyzed in the context of the realization of a controlled-environment agricultural system through all its stages: installation, deployment of the software, integration, maintenance, crop control strategy setup and daily operation of the grower. The proposed embedded platform provides remote monitoring and control of the greenhouse environment and is implemented as a distributed sensing and control network integrating wired and wireless nodes. All nodes were built with low-cost, low-power microcontrollers. The key issues that were addressed include the energy-efficient control, the robustness of the distributed control network to faults and a low-cost hardware implementation. The translation of the supervisory growth-planning information to the operational (control network) level is achieved through a specific architecture residing on a crop planning module (CPM) and an interfacing block (IB). A suite of software applications with flows and interfaces developed from a grower-centric perspective was designed and implemented on a multi-tier architecture. The operation of the platform was validated through implementation of sensing and control nodes, application of software for configuration and visualization, and deployment in typical greenhouses.

scholarly journals An Effective Water Management Framework Based on Internet of Things (IOT) Technology

2019 ◽  
Vol 4 (5) ◽  
pp. 102-108
Author(s):  
Moses Odiagbe ◽  
Emmanuel Majeyibo Eronu ◽  
Farouq E. Shaibu
Keyword(s):  
Wireless Sensor Network ◽  
Internet Of Things ◽  
Flow Rate ◽  
Low Cost ◽  
Cost Effective ◽  
Wireless Sensor ◽  
Monitoring And Control ◽  
Rate Sensor ◽  
And Control ◽  
Effective Water

The low cost effective wireless sensor network that The low cost effective wireless sensor network that allows for embedded system to monitor and control virtually any space and environment and to form the so called Internet of Things or Internet of Everything. The research work is intended to address a general problem associated with effective water utilization management, among others is the issue of water leakages, there is the need to effectively detect cases of leakages and address them appropriately. However, the sensitivity of the flow rate sensors used poses a number of challenges, hence the need to setup an appropriate calibration scheme that will allows for the flow rate sensor, effective adoption and usage ,isolating false alarm due to deficiencies associated with operation of the flow rate sensor as well as detecting leakages  . A frame work build around a flow rate sensor, solenoid valve, a microcontroller equipped with internet connectivity and a log in service monitoring and control platform on the cloud is used. Several simulated tests were carried out to explore a number of leakage scenarios. Based on the analysed data obtained overtime, appropriate algorithms were developed to allow for quick detection, remote monitoring and control of deduced cases of leakages. The work has significantly addressed the challenges poses to the effect leakages with the adopted framework.

‘Internet of Things’ for environmental sciences and education

2020 ◽  
Author(s):  
Rolf Becker
Keyword(s):  
Internet Of Things ◽  
Low Cost ◽  
Cost Effective ◽  
Wireless Data ◽  
Environmental Sciences ◽  
Climate And Environmental Change ◽  
Wireless Data Transmission ◽  
Maker Culture ◽  
Do It Yourself ◽  
And Control

<p>The collective term ‘Internet of Things’ (IoT) encompasses a variety of technologies and methods providing novel opportunities for data acquisition and control in environmental sciences. Availability of cost effective components as well as support of large open source communities allow scientists to gain more flexibility and control over their experimental setups. However quality of measurements, stability of instruments as well as real costs for development and maintenance are often underestimated challenges. The presentation introduces current best practices of IoT principles in scientific applications. Examples of low cost sensors, low power electronics, wireless data transmission protocols, time series databases as well as real-time visualization are presented and discussed. Furthermore light is shed on non-technological issues of the ‘do-it-yourself’ or ‘maker’ approach such as social and psychological aspects. The ‘make-share-learn’ paradigm of the maker culture can be utilized to raise awareness. It provides significant opportunities for environmental education and community building which constantly gain more importance in the context of climate and environmental change.</p>

Innovative control education using a low cost intelligent robot platform

Robotica ◽  
2003 ◽  
Vol 21 (3) ◽  
pp. 283-288 ◽  
Author(s):  
Wei Wang ◽  
Yan Zhuang ◽  
Wei-min Yun
Keyword(s):  
Intelligent Systems ◽  
Low Cost ◽  
Cost Effective ◽  
Technical Aspect ◽  
Intelligent Robot ◽  
Fast Development ◽  
Series Of Experiments ◽  
Control Education ◽  
And Control ◽  
Robot Platform

With the fast development of the control theory and engineering, robotics and artificial intelligence have become the focus in the field of intelligent systems. But research in this field is based on a series of experiments and requires various robot platforms which are often unaffordable by the universities in developing countries. The intention of this paper is to present the idea of applying innovative control education and building a laboratory using low cost equipments. In this paper the architecture and control system of a new kind of low cost intelligent robot, “Ability Storm”, is introduced. It not only shows the technical aspect, but also illustrates the related applications in control education. The versatility and effectiveness of this affordable intelligent robot platform are demonstrated through a number of experiments, including both basic laboratory experiments and other innovative project-oriented design, such as robot fire fighting, which clearly show the practicality and robustness of this cost-effective robot platform.

DESIGN AND CONTROL OF A FLAPPER ACTUATED BRAILLE PRINTER BASED ON PC STANDARD INTERFACES

2007 ◽  
Vol 19 (01) ◽  
pp. 53-61
Author(s):  
Huoy-Shyi Tsay ◽  
Fung-Huei Yeh
Keyword(s):  
Low Cost ◽  
Signal Transmission ◽  
Cost Effective ◽  
Low Noise ◽  
Signal Control ◽  
Universal Serial Bus ◽  
Control Module ◽  
Interface Module ◽  
Computer Interfaces ◽  
And Control

A cost-effective and portable Braille printer with low noise is designed in this study. To reach this goal, the compressive printing concept is used and the Braille typesetting, the signal transmission interface module, the signal control module, and the Braille printing cell are designed and integrated. To increase the portability, the Braille printer is designed to use A4 size paper and each page can print at most twenty-four rows and twenty-seven Braille characters in each row. The typesetting of the printing page is designed to contain twenty-seven side-by-side Braille printing cells and each printing cell contains two low cost flapper mechanisms for performing the low noise and cost-effective Braille print. The logic signal control module then controls a total of fifty-four flappers. The logic signals are transmitted through the integrated signal transmission interface module based on two common standard personal computer interfaces: Serial/RS232 and Universal Serial Bus 2.0. Subsequently, the pre-processing software is programmed based on the hardware developed. The integration of the software and hardware is successfully validated, and this newly designed Braille printer can be further used by the visually impaired for self-printing.

scholarly journals Cost-Effective Power Converters for Small Wind Turbines

Energies ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5906
Author(s):  
Sławomir Karyś ◽  
Paweł Stawczyk
Keyword(s):  
Wind Turbines ◽  
Power Converters ◽  
Low Cost ◽  
Cost Effective ◽  
Control Methods ◽  
Three Phase ◽  
Small Wind Turbines ◽  
Simulation Results ◽  
And Control ◽  
First Time

This paper presents AC/DC converters for cost-effective small wind turbine systems. The analysis focuses on reliable, sensor-less, and low-cost solutions. A recently developed type of the three phase AC/DC two-switch converter is compared, for the first time, using simulations and experiments, with two other converters. The operating principles and control methods are discussed. Simulation results are verified experimentally and interesting conclusions are drawn. It is shown that less known converters are also attractive solutions for use in small wind turbines.

scholarly journals Monitoring and Control of Vital Parameters in Greenhouse using Internet of Things

2019 ◽  
Vol 8 (9) ◽  
pp. 849-859
Keyword(s):  
Online Monitoring ◽  
Liquid Crystal Display ◽  
Low Cost ◽  
Cost Effective ◽  
Feedback Mechanism ◽  
Soil Parameters ◽  
Monitoring And Control ◽  
Internet Connection ◽  
And Control ◽  
Environment Parameters

The purpose of this paper is to design a greenhouse monitoring system (GHMS) which helps the cultivator to monitor environment and control the sensor values by means of feedback mechanism. The methodology involves the combination of six sensors which gives the values of the environment such as temperature, humidity, moisture, obstacle entry, pH and light. The sensor values are analyzed and sent to cloud using Wi-Fi module which enables the online monitoring, displays the values of the sensor in liquid crystal display (LCD) and also send alert mail and messages. The results are obtained and the values are updated in cloud and webpages. This design enables the cultivator to protect the greenhouse environment both online and also offline. In addition to it also gives the alert about any intruder or animals crossing the cultivation area. Thereby the soil parameters, environmental conditions and intruder entry are included in the proposed work. The proposed work of GHMS provides the low cost framework to sense the environment parameters such as temperature, humidity, moisture, light and pH. It also protect the environment of greenhouse from animal attacks using an infrared (IR) obstacle sensor. The sensor values are updated in cloud and messages is sent through Global System for Mobile Communication (GSM) module which is a cost effective one. The need of al-time internet connection is overcome by sending messages.

The role of hybrid computers in simulation and control

SIMULATION ◽  
1971 ◽  
Vol 16 (3) ◽  
pp. 112-115 ◽  
Author(s):  
Frank W. Paul
Keyword(s):  
Low Cost ◽  
Cost Effective ◽  
Analog Computer ◽  
Computer Usage ◽  
Cost Effective Approach ◽  
Specialized Technique ◽  
Hybrid Computer ◽  
The Cost ◽  
And Control

This paper discusses the present atzd futtsre of hybrid computation: Has it reached its zenith, or will it continue to develop as a powerful but specialized technique? The minicomputer has made current hybrid systems practical by providing a low-cost digital component. Unless the cost of the analog computer is reduced, the increasing power and decreasing cost of the minicomputer may severely limit future hybrid computer usage by providing an economic all-digital alternative. However, problems with alternative solution techniques indicate that for some important applications the hybrid computer will be the most cost- effective approach.

scholarly journals LOW COST APPLICATION MOTION HAND GESTURE CONTROLLER USING ADAPTABLE SENSORS

2020 ◽  
pp. 24-28
Author(s):  
Mr. Akshay Kumar Mishra
Keyword(s):  
Low Cost ◽  
Cost Effective ◽  
Ultrasonic Waves ◽  
Innovative Technology ◽  
Hand Gesture ◽  
Leap Motion ◽  
Ultrasonic Sensors ◽  
Time Saving ◽  
And Control ◽  
Day By Day

Today we are surrounded by innovative technology and it is evolving day by day. Among these technologies, the hand gesture is one of such techniques that helps humans to interact with the computer and control its functions using some pre-defined gestures. Usage of hand gesture technology eliminates the use of hardware we use traditionally such as mouse and keyboard as our interaction with the computer is going to be contactless making it a more affordable approach. This technology uses ultrasonic sensors that work on the principle of ultrasonic waves produced by the gesture making the interaction process faster. This technology is thus time-saving, cost-effective, and efficient. The hardware requirement of this technology consists of Arduino UNO board, low in cost sensors, and a personal computer making it highly affordable. This technology not only brings advancement human-computer interaction but also speeds up the process, making it a productive approach to choose. [4] KEYWORDS- Arduino, Ultrasonic Sensors, Leap motion, Gesture, Laptop, PySerial, PyAutoGUI, Python,

Natural Low-Cost Coal-Based Additive to Improve Well Cement Integrity

2021 ◽  
Author(s):  
Maryam Tabatabaei ◽  
Arash Dahi Taleghani
Keyword(s):  
Mechanical Properties ◽  
Low Cost ◽  
Particle Surface ◽  
Temperature Fluctuations ◽  
Cost Effective ◽  
Zonal Isolation ◽  
Cement Integrity ◽  
Surface Modified ◽  
Well Cement ◽  
And Control

Abstract The primary goal of wellbore cementing is providing a zonal isolation. Prevention of any potential leaks, beyond even production life, needs novel methods to engineer cement properties at the material-level. We probe the application of a cost-effective anthracite additive, to refine voids and control crack propagation in cement. We develop a micro reinforcement for the cement to improve its overall mechanical properties, specifically, its tensile strength and resiliency. We present a method for treating the surface of anthracite particle. Surface-modified anthracite particles can disperse uniformly within the cement and form strong bonding at their interfaces. Strong bonding enhances the durability of cement under pressure and temperature fluctuations may occur during completion, production and post-production.

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