scholarly journals A Low Budget Touch less Door Bell with Integrated Intruder Alerting Safety System

2020 ◽  
Vol 9 (8) ◽  
pp. 926-930
Keyword(s):  
Cost Effective ◽  
Healthy Person ◽  
Critical Issue ◽  
Safety System ◽  
Ultrasonic Sensor ◽  
Ultrasonic Sensors ◽  
Alert System ◽  
Signaling Device ◽  
Strong Intensity ◽  
Affected Person

: A Door bell is a signaling device of your home which is used to indicate the Owner (host) that someone is at your door-step. The problem that is faced today is the touch contact of the Door-bell switch, wherein everyone will have to touch it, not having any other option than knocking or slamming the door. This is a critical issue condition nowadays, when by chance a Corona affected person unintentionally touches the switch, later followed by a healthy person, wherein which it now acts as a source of transmission. A touch less door bell (Buzzer) using sensors will solve this issue, wherein available solutions have Ultrasonic sensors for the same. Similarly this door bell can also produce a strong intensity of signal which can also be used as an alert system, if an intruder is trying to enter, while the host is not in the house. To implement both these together a PIR sensor would additionally be required to enable the Ultrasonic sensor and Sound sensor. The alert system can be controlled by the Host with the help of a Switch placed inside the house. The host is being alerted with a message in both scenarios with the help of a GSM module. All of these controlled by a single microcontroller, and the reuse of PIR and Buzzer, makes it cost effective.

scholarly journals Cost-Effective Vision based Obstacle Avoidance System integrated Multi Array Ultrasonic sensor for Smart Wheelchair

2019 ◽  
Vol 8 (4) ◽  
pp. 6988-6993
Keyword(s):  
Real Time ◽  
Obstacle Avoidance ◽  
Motor Impairment ◽  
Cost Effective ◽  
Obstacle Detection ◽  
Ultrasonic Sensor ◽  
Ultrasonic Sensors ◽  
Kinect Camera ◽  
The Right ◽  
Smart Wheelchair

A smart wheelchair (SW) is a power wheelchair (PW) consist of microcontroller, actuators, sensor, and implement the assistive technology in system architecture. Users with severe motor impairment may realize the difficulty to operate a wheelchair when they are in a tight space such as passing a doorway or when avoiding obstacles since, they are unable to control the wheelchair. This project embarked on an obstacle avoidance system of a wheelchair. This project developed a cost-effective system that alarmed the user to avoid obstacle on its path. The prototype includes a Kinect camera and ultrasonic sensors. Kinect camera was placed at the right side of the wheelchair for real time video obstacle detection. Four of the ultrasonic sensors was used to detect obstacle at the front and one ultrasonic sensor for rear obstacle detection. Any obstacle detected by the ultrasonic sensors triggered the buzzer. Obstacle detected by Kinect camera was displayed with specific command for the user in attempt for obstacle avoidance. The performance of the obstacle avoidance system was tested indoor to detect obstacles in a controlled environment. The accuracy of the ultrasonic system was tested at a specific distance of 20mm to 200mm at 20mm intervals. Real time video received from the Kinect Camera was used to analyse the depth of the environment and the location of the object.

scholarly journals Calibration of ultrasonic sensors of a mobile robot

2009 ◽  
Vol 6 (3) ◽  
pp. 427-437 ◽  
Author(s):  
Ivan Paunovic ◽  
Darko Todorovic ◽  
Miroslav Bozic ◽  
Goran Djordjevic
Keyword(s):  
Signal Processing ◽  
Mobile Robot ◽  
Calibration Procedure ◽  
Ultrasonic Sensor ◽  
Robot Localization ◽  
Ultrasonic Sensors ◽  
Nonlinear Characteristics ◽  
Mobile Robot Localization

The paper discusses a mobile robot localization. Due to cost and simplicity of signal processing, the ultrasonic sensors are very suitable for this application. However, their nonlinear characteristics requires thorough calibrating procedure in order to achieve reliable readings from the obstacles around the robot. Here we describe SMR400 ultrasonic sensor and its calibration procedure. The suggested calibration procedure was tested through a number of experiments, and the results are presented in this paper. .

Characterizing the Wave Environment in the Fatigue Analysis of Flexible Risers

2005 ◽  
Vol 128 (2) ◽  
pp. 108-118 ◽  
Author(s):  
John M. Sheehan ◽  
Frank W. Grealish ◽  
Annette M. Harte ◽  
Russell J. Smith
Keyword(s):  
Cost Effective ◽  
Critical Issue ◽  
Fatigue Analysis ◽  
Flexible Pipes ◽  
Water Developments ◽  
Key Issues ◽  
Flexible Risers ◽  
Offshore Industry ◽  
Unbonded Flexible Pipes

As the offshore industry moves towards deeper water developments and continues to embrace harsh environments, unbonded flexible pipes are increasingly being utilized as a cost effective riser solution. Furthermore, with the advent of issues such as nonpristine annuli environments, the fatigue performance of these flexible risers is becoming a critical issue. This paper presents an overview of the comparisons between deterministic and stochastic global fatigue analysis techniques. Methods used to perform both deterministic and stochastic analyses are outlined, from performing the global analyses to using local models to generate armor wire stresses and subsequent fatigue damage. The paper identifies the key issues in the analysis performed and presents key results and conclusions with regard to the characterization of the wave environment in the global fatigue analysis of flexible risers.

scholarly journals An Application Study on Road Surface Monitoring Using DTW Based Image Processing and Ultrasonic Sensors

2020 ◽  
Vol 10 (13) ◽  
pp. 4490 ◽  
Author(s):  
Sunil Kumar Sharma ◽  
Haidang Phan ◽  
Jaesun Lee
Keyword(s):  
Image Processing ◽  
Cost Effective ◽  
Processing Technique ◽  
Road Surface ◽  
Image Processing Technique ◽  
Ultrasonic Sensors ◽  
The Road ◽  
Surface Irregularities ◽  
Road Surface Monitoring ◽  
Surface Monitoring

Road surface monitoring is an essential problem in providing smooth road infrastructure to commuters. This paper proposed an efficient road surface monitoring using an ultrasonic sensor and image processing technique. A novel cost-effective system, which includes ultrasonic sensors sensing with GPS for the detection of the road surface conditions, was designed and proposed. Dynamic time warping (DTW) technique was incorporated with ultrasonic sensors to improve the classification and accuracy of road surface detecting conditions. A new algorithm, HANUMAN, was proposed for automatic recognition and calculation of pothole and speed bumps. Manual inspection was performed and comparison was undertaken to validate the results. The proposed system showed better efficiency than the previous systems with a 95.50% detection rate for various road surface irregularities. The novel framework will not only identify the road irregularities, but also help in decreasing the number of accidents by alerting drivers.

scholarly journals Outlier Detection and Smoothing Process for Water Level Data Measured by Ultrasonic Sensor in Stream Flows

Water ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 951 ◽  
Author(s):  
Inhyeok Bae ◽  
Un Ji
Keyword(s):  
Water Level ◽  
Outlier Detection ◽  
Measurement Range ◽  
Ultrasonic Sensor ◽  
Sensitivity Analyses ◽  
Data Sets ◽  
Ultrasonic Sensors ◽  
Outlier Removal ◽  
Level Data ◽  
Water Level Data

Water level data sets acquired by ultrasonic sensors in stream-scale channels exhibit relatively large numbers of outliers that are off the measurement range between the ultrasonic sensor and water surface, as well as data dispersion of approximately 2 cm due to random errors such as water waves. Therefore, this study develops a data processing algorithm for outlier removal and smoothing for water level data measured by ultrasonic sensors to consider these characteristics. The outlier removal process includes an initial cutoff process to remove outliers out of the measurement range and an outlier detection process using modified Z-scores based on the median absolute deviation (MAD) of a robust estimator. In addition, an exponentially weighted moving average (EWMA) method is applied to smooth the processed data. Sensitivity analyses are performed for factors that are subjectively set by the user, including the window size for the MAD outlier detection stage, the rejection criterion for the modified Z-score outlier removal stage, and the smoothing constant for the EWMA smoothing stage, based on four different water level data sets acquired by ultrasonic sensors in stream-scale experiments.

scholarly journals A Risk-Based Interval Two-Stage Programming Model for Agricultural System Management under Uncertainty

2016 ◽  
Vol 2016 ◽  
pp. 1-13 ◽  
Author(s):  
Ye Xu ◽  
Guohe Huang
Keyword(s):  
Agricultural Production ◽  
Financial Risk ◽  
Production Management ◽  
Programming Model ◽  
Cost Effective ◽  
Critical Issue ◽  
Agricultural System ◽  
Two Stage ◽  
Production Pattern ◽  
System Benefit

Nonpoint source (NPS) pollution caused by agricultural activities is main reason that water quality in watershed becomes worse, even leading to deterioration. Moreover, pollution control is accompanied with revenue’s fall for agricultural system. How to design and generate a cost-effective and environmentally friendly agricultural production pattern is a critical issue for local managers. In this study, a risk-based interval two-stage programming model (RBITSP) was developed. Compared to general ITSP model, significant contribution made by RBITSP model was that it emphasized importance of financial risk under various probabilistic levels, rather than only being concentrated on expected economic benefit, where risk is expressed as the probability of not meeting target profit under each individual scenario realization. This way effectively avoided solutions’ inaccuracy caused by traditional expected objective function and generated a variety of solutions through adjusting weight coefficients, which reflected trade-off between system economy and reliability. A case study of agricultural production management with the Tai Lake watershed was used to demonstrate superiority of proposed model. Obtained results could be a base for designing land-structure adjustment patterns and farmland retirement schemes and realizing balance of system benefit, system-failure risk, and water-body protection.

Special Issue on Enhancement of Societal Resiliency Against Natural Disasters

2019 ◽  
Vol 14 (2) ◽  
pp. 211-211
Author(s):  
Muneo Hori
Keyword(s):  
Natural Disasters ◽  
Effective Means ◽  
Cost Effective ◽  
Heavy Rain ◽  
Critical Issue ◽  
Disaster Mitigation ◽  
Social Resilience ◽  
Special Issue ◽  
Advanced Technologies ◽  
Estimation System

Enhancing social resilience in the event of natural disasters is a critical issue for Japan. It will requires a need huge efforts to further increase the physical preparedness; on the other hand, compared to increasing physical preparedness, enhancing social resilience is a cost-effective means of mitigating the effects of natural disasters. The Cross-ministerial Strategic Innovation Promotion program (SIP), the biggest national research program in Japan, selected a theme related to enhancing social resilience in the face of natural disasters in 2014. The authors of this special issue worked as a part of the SIP for five years and developed state-of-the-art technologies for the enhancement, namely, next-generation tsunami and heavy rain observation, integrated liquefaction counter-measures, methods for sharing disaster information, a real-time disaster estimation system, an emergency communication system, and the development of applications for regional use. Most of the technologies have been implemented in efforts at natural disaster mitigation following earthquakes and heavy rains in 2017 and 2018. The development and implementation of advanced technologies are the essence of the SIP because it aims to foster innovation. While the SIP is a Japanese government program, it promotes international utilization of the technologies it develops. There are many instances which might be studied better by developing and utilizing advanced technologies in various countries following different types of natural disasters. I hope that this special issue will be a gateway for readers who are interested in using such advanced technologies to mitigate natural disasters and enhance social resilience during such events.

scholarly journals DESIGN OF TANDON AND AUTOMATIC FILLING TOOLS ON DISPENSERS WITH ULTRASONIC SENSORS

2019 ◽  
Vol 4 (1) ◽  
pp. 55-64
Author(s):  
Hafizt Azzari Aldaf ◽  
Indyah Hartami Santi ◽  
Yusniarsi Primasari
Keyword(s):  
Drinking Water ◽  
Water Level ◽  
Cold Water ◽  
Water Storage ◽  
Ultrasonic Sensor ◽  
Hot Water ◽  
Storage Tanks ◽  
Ultrasonic Sensors ◽  
Modern Era ◽  
Maximum Limit

Nowdays, The development of water dispensers has hot and cold water technology, but fills water into cold and hot water storage tanks by lifting and putting the gallons on top of the dispenser so that water can flow into hot and cold water storage tanks, this is assessed less efficient. The purpose of making this tool is to make it easier for users to install gallons without having to lift the gallon and put it on top of the reservoir, it can also facilitate the taking of drinking water without having to press or open the faucet first. Because in modern era, the need for tools that work automatically and efficiently are increasing. The results of this study indicate that automatic water and faucet filler devices in dispensers using ultrasonic sensors as a whole work well and are in accordance with the function specified. The function of the ultrasonic sensor is as a reader the maximum limit of water level in the reservoir, so that when the water is in its maximum state, the pump will stop filling the reservoir. And the ultrasonic sensor in front of the dispenser functions to read the glass, the sensor will detect and then be received by the microcontroller and continue to execute the relay and open the selenoid so that the water can come out.

scholarly journals Friction Stir Processing on the Tribological, Corrosion, and Erosion Properties of Steel: A Review

2021 ◽  
Vol 5 (3) ◽  
pp. 97
Author(s):  
Alessandro M. Ralls ◽  
Ashish K. Kasar ◽  
Pradeep L. Menezes
Keyword(s):  
Friction Stir Processing ◽  
Current Knowledge ◽  
Cost Effective ◽  
Critical Issue ◽  
Passive Layer ◽  
Point Of View ◽  
Economic Point ◽  
Friction Stir ◽  
Erosion Properties ◽  
Processing Techniques

The eventual material degradation of steel components in bio-implant, marine, and high-temperature applications is a critical issue that can have widespread negative ramifications from a safety and economic point of view. Stemming from their tribological, corrosion, and erosion-based properties, there is an increasing need to address these issues effectively. As one solution, surface processing techniques have been proposed to improve these properties. However, common techniques tend to suffer from issues spanning from their practicality to their high costs and negative environmental impacts. To address these issues, friction-stir-processing (FSP) has been one technique that has been increasingly utilized due to its cost effective, non-polluting nature. By inducing large amounts of strain and plastic deformation, dynamic recrystallization occurs which can largely influence the tribological, corrosion, and erosion properties via surface hardening, grain refinement, and improvement to passive layer formation. This review aims to accumulate the current knowledge of steel FSP and to breakdown the key factors which enable its metallurgical improvement. Having this understanding, a thorough analysis of these processing variables in relation to their tribological, corrosion, and erosion properties is presented. We finally then prospect future directions for this research with suggestions on how this research can continue to expand.

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