scholarly journals TO THE PROBLEM OF APPLYING WI-FI ACCESS POINTS FOR REGISTERING MOTION AT THE SITE IN THE ABSENCE OF A WI-FI MODULE

2019 ◽  
pp. 73-78 ◽  
Author(s):  
Ivan Leonidovich Reva ◽  
Alexey Aleksandrovich Bogdanov ◽  
Ekaterina Andreevna Malakhova
Keyword(s):  
Global Positioning System ◽  
Rapid Development ◽  
Human Movement ◽  
Human Motion ◽  
Radio Network ◽  
New Approach ◽  
Unauthorized Access ◽  
Single Person ◽  
Global Positioning ◽  
Access Control System

The article describes the problem of registration of human movement on the object and protection of the object against unauthorized access. Global Positioning System which is well proven in open field has low precision within the premises. Due to the rapid development of Wi-Fi technology and the need to organize monitoring of human motion in the protected premises, there is being developed a new approach to registering a person on site using Wi-Fi. The problem of registering unauthorized access to the object by means of Wi-Fi radio network has been considered, its strengths and weaknesses have been studied. Most organizations actively use corporative and public Wi-Fi networks and beneficially apply this well-developed infrastructure for detecting the human presence in the premises and determining their position. It has been stated that using Wi-Fi network is more profitable than installing a special access control system. The aim of the research is to develop a human motion registering system at the site protected without using a Wi-Fi-module. There have been presented experiment results of registering human motion by means of the well-developed Wi-Fi infrastructure, the experiments being conducted to analyze changes of a signal level at different positions of a single person or a number of persons in the premises. It has been inferred that the level of Wi-Fi signal changes when a person or a group of persons are present in the room, even if they don’t have a Wi-Fi-module; this fact helps register the human motion in the protected premises.

Real time evaluation algorithm of human motion in tennis training robot

2020 ◽  
pp. 1-9
Author(s):  
Yingying Wang ◽  
Yongzhi Zhang
Keyword(s):  
Real Time ◽  
Rapid Development ◽  
Human Movement ◽  
Human Motion ◽  
Sports Activity ◽  
Training Requirements ◽  
Core Theory ◽  
Evaluation Algorithm ◽  
Stability And Accuracy ◽  
Time Evaluation

Tennis is a set of sports and entertainment and a sports activity, since 2014, tennis in China has been another rapid development. With the development of economy and technology, tennis training mode has been further optimized and reformed. At present, tennis training robot is the mainstream way to train athletes. However, there are some defects in the current tennis training robots, such as the low accuracy of human motion real-time evaluation, and the lack of stability. Therefore, this paper puts forward the related research on the real-time evaluation algorithm of human motion in tennis training robots, hoping to make up for the deficiency in this field. The research of this paper is mainly divided into four parts. The first part is to analyze the current situation of technology research in this field and put forward the idea of this paper by analyzing the shortcomings of the existing technology. The second part is the related basic theory research; this part deeply studies the core theory of tennis training and intelligent training robot, which provides a theoretical basis for the realization of the optimization scheme. The third part is the design and implementation of a real-time human motion evaluation optimization algorithm for tennis training robots. At the end of the paper, that is, the fourth part, through the way of field test and investigation, further proves the superiority of the improved real-time evaluation algorithm of human movement. The algorithm has good stability and accuracy and can meet the existing tennis training requirements.

scholarly journals New Global Referencing Approach in a Camera-LCD Micro Positioning System

Sensors ◽  
2020 ◽  
Vol 20 (7) ◽  
pp. 2118
Author(s):  
Óscar de Francisco Ortiz ◽  
Irene Ortiz ◽  
Antonio Bueno
Keyword(s):  
Global Positioning System ◽  
New Technology ◽  
Positioning System ◽  
New Approach ◽  
Positioning Systems ◽  
System A ◽  
Quality Product ◽  
Global Positioning ◽  
Accuracy And Repeatability ◽  
Current Systems

In any precision manufacturing process, positioning systems play a very important role in achieving a quality product. As a new approach to current systems, camera-LCD positioning systems are a new technology that can provide substantial improvements enabling better accuracy and repeatability. However, in order to provide stability to the system a global positioning system is required. This paper presents an improvement of a positioning system based on the treatment of images on an LCD in which a new algorithm with absolute reference has been implemented. The method is based on basic geometry and linear algebra applied to computer vision. The algorithm determines the spiral center using an image taken at any point. Consequently, the system constantly knows its position and does not lose its reference. Several modifications of the algorithm are proposed and compared. The simulation and test of the algorithm provide an important improvement in the reliability and stability of the positioning system providing errors of microns for the calculation of the global position used by the algorithm.

scholarly journals A Flexible and Stretchable Self-Powered Nanogenerator in Basketball Passing Technology Monitoring

Electronics ◽  
2021 ◽  
Vol 10 (21) ◽  
pp. 2584
Author(s):  
Changjun Jia ◽  
Yongsheng Zhu ◽  
Fengxin Sun ◽  
Tianming Zhao ◽  
Rongda Xing ◽  
...  
Keyword(s):  
Real Time ◽  
Inorganic Salt ◽  
Rapid Development ◽  
Human Motion ◽  
Small Scale ◽  
New Approach ◽  
Motion Data ◽  
Fifth Generation ◽  
Self Powered ◽  
Generation Technology

The rapid development of the fifth generation technology poses more challenges in the human motion inspection field. In this study, a nanogenerator, made by PVDF, ionic hydrogel, and PDMS, is used. Furthermore, a transparent, stretchable, and biocompatible PENG (TSB-PENG) is presented, which can be used as a self-powered sensor attached to the athlete’s joints, which helps to monitor the training and improve the subject’s performance. This device shows the ability to maintain a relatively stable output, under various external environments (e.g., inorganic salt, organic matter and temperature). Additionally, TSB-PENG can supply power to small-scale electronic equipment, such as Bluetooth transmitting motion data in real time. This study can provide a new approach to designing lossless, real-time, portable, and durable self-powered sensors in the sports motoring field.

Design and Development of Compact Hand Held Target Acquisition Device

2017 ◽  
Vol 67 (2) ◽  
pp. 154
Author(s):  
Eyneen Altaf ◽  
Ajay Kumar
Keyword(s):  
Global Positioning System ◽  
Design Methodology ◽  
Ccd Camera ◽  
Human Movement ◽  
Target Acquisition ◽  
Night Time ◽  
Global Positioning ◽  
Infra Red ◽  
Acquisition Device ◽  
Target Ranging

A compact, lightweight hand held target acquisition device, comprising of an infra red imager, colour CCD camera, eye safe laser range finder, global positioning system and digital magnetic compass has been developed. The aim was to develop a compact, lightweight, modular and man-portable multi function electro-optical system with a recognition range of 1 km for vehicles and 500 m for human movement enabling day and night time surveillance, target ranging capability, ability to generate coordinates of the operator and estimation of target coordinates. Hand Held target acquisition device operates on 12 V DC, has integrated signal processing for all the sensors and display electronics with a weight of 3 kg. Overview of the system, design methodology, performance modeling, range simulation of both the IR imager and colour CCD camera and field results have been presented.

The Research of 3D Human Motion Simulation and Video Analysis System Implemented in Sports Training

2014 ◽  
Vol 926-930 ◽  
pp. 2743-2746 ◽  
Author(s):  
Rui Min Hu ◽  
Zhen Dong He ◽  
Feng Bai
Keyword(s):  
Computer Vision ◽  
Video Analysis ◽  
Rapid Development ◽  
Human Movement ◽  
Research Direction ◽  
Human Motion ◽  
Motion Simulation ◽  
Sports Training ◽  
Camera Tracking ◽  
Human Motion Simulation

With the rapid development of computer technology, human motion tracking based on video is a kind of using ordinary camera tracking unmarked human movement technology. It has important application value in automatic monitoring, human-computer interaction, sports analysis and many other fields. This research is a hot research direction in the field of computer vision in recent years. Because of the complexity of the problem and the lack of understanding of the nature of the human visual tracking based on video is always a difficult problem in computer vision. The research content of this article is set in sports training, for motion analysis of non-contact, no interfere with measurement and simulation requirements, the use of computer graphics and computer vision technology, discussing 3D human motion simulation technology based on video analysis.

Research on Indoor 3D Location Technology Based on RSSI

2014 ◽  
Vol 696 ◽  
pp. 241-246 ◽  
Author(s):  
Bo Xin Mao ◽  
Shan Liu ◽  
Jian Ping Chai
Keyword(s):  
Real Time ◽  
Global Positioning System ◽  
Mobile Communication ◽  
Rapid Development ◽  
Three Dimensional ◽  
Propagation Model ◽  
Positioning System ◽  
Positioning Accuracy ◽  
Global Positioning ◽  
Positioning Method

With the rapid development of mobile communication, the GPS (Global Positioning System) which provides real-time global positioning system has not been able to meet the needs of the indoor accurate positioning. Through simulation, this paper implements the method of indoor three-dimensional positioning based on RSSI compared the positioning accuracy under several kinds of noise. We achieve the good indoor three-dimensional positioning method with the combination of cost, positioning accuracy and positioning precision through the filter and secondary positioning which establishes special propagation model for various different environments.

scholarly journals State of the Art and Gap Analysis of Precision Agriculture

2019 ◽  
Vol 10 (3) ◽  
pp. 72-92 ◽  
Author(s):  
Vaibhav Bhatnagar ◽  
Ramesh C. Poonia ◽  
Surendra Sunda
Keyword(s):  
Global Positioning System ◽  
Precision Agriculture ◽  
Gap Analysis ◽  
State Of The Art ◽  
Rapid Development ◽  
Geographical Information ◽  
Theoretical Research ◽  
Positioning System ◽  
The Past ◽  
Global Positioning

Precision Agriculture (PA) is now becoming the base for rapid development of a nation. So many technologies are used in precision agriculture such as Global Positioning System (GPS), Artificial Intelligence (AI), Sensor Network and Geographical Information System (GIS). This manuscript per the authors will review all the factors that influence the precision agriculture. This article describes the major endeavors in the past of precision agriculture. The noble intention behind this literature review and analogy is to figure out the gap between theoretical research and actual needs of farmers. In order to find out the actual requirements manuscripts per the authors have conducted a questionnaire in Rajasthan State of India. This gap analysis would be helpful for researchers to design an effective and efficient decision support system for irrigation and fertilization can be designed for Indian farmers.

A Geometric Method for Near Sea Target Localization Based on GNSS-R in Passive Radar

2014 ◽  
Vol 602-605 ◽  
pp. 2153-2156
Author(s):  
Pei Shan Lyu ◽  
Chun Di Xiu ◽  
Wen Xing Ji
Keyword(s):  
Global Positioning System ◽  
Elevation Angle ◽  
Sea Surface ◽  
Geometric Method ◽  
Measuring System ◽  
Passive Radar ◽  
New Approach ◽  
Precise Position ◽  
Angle Measuring ◽  
Global Positioning

This work presents a new approach to locate targets near the sea surface based on Global Positioning System Signal Reflected (GNSS-R) in passive radar system. The algorithm uses an angle measuring system to obtain the elevation angle and the azimuth angle of the target’s reflected signal. This method makes use of traditional geometric method to achieve a precise position of target without estimating its height. The approach can successfully localize a target that is over 700km away from the receiver. It has a low localization error which has a over 80 percent chance less than 1 kilometer. Computer simulations are provided to demonstrate the effectiveness of the proposed scheme.

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