scholarly journals High-Sensitivity Real-Time Tracking System for High-Speed Pipeline Inspection Gauge

Sensors ◽  
2019 ◽  
Vol 19 (3) ◽  
pp. 731 ◽  
Author(s):  
Guanyu Piao ◽  
Jingbo Guo ◽  
Tiehua Hu ◽  
Yiming Deng
Keyword(s):  
Real Time ◽  
High Speed ◽  
Tracking System ◽  
High Sensitivity ◽  
Decay Rates ◽  
Least Square ◽  
Physical Parameters ◽  
Burial Depth ◽  
Pipeline Inspection ◽  
Real Time Tracking

Real-time tracking of pipeline inspection gauges (PIGs) is an important aspect of ensuring the safety of oil and gas pipeline inline inspections (ILIs). Transmitting and receiving extremely low frequency (ELF) magnetic signals is one of the preferred methods of tracking. Due to the increase in physical parameters of the pipeline including transportation speed, wall thickness and burial depth, the ELF magnetic signals received are short transient (1-second duration) and very weak (10 pT), making the existing above-ground-marker (AGM) systems difficult to operate correctly. Based on the short transient very weak characteristics of ELF signals studied with a 2-D finite-element method (FEM) simulation, a data fusion model was derived to fuse the envelope decay rates of ELF signals by a least square (LS) criterion. Then, a fast-decision-tree (FDT) method is proposed to estimate the fused envelope decay rate to output the maximized orthogonal signal power for the signal detection through a determined topology and a fast calculation process, which was demonstrated to have excellent real-time detection performance. We show that simulation and experimental results validated the effectiveness of the proposed FDT method, and describe the high-sensitivity detection and real-time implementation of a high-speed PIG tracking system, including a transmitter, a receiver, and a pair of orthogonal search coil sensors.

scholarly journals Experimental Validation of Real-Time Ski Jumping Tracking System Based on Wearable Sensors

Sensors ◽  
2021 ◽  
Vol 21 (23) ◽  
pp. 7780
Author(s):  
Johannes Link ◽  
Sébastien Guillaume ◽  
Bjoern M. Eskofier
Keyword(s):  
Real Time ◽  
Tracking System ◽  
Wearable Sensors ◽  
Absolute Error ◽  
Opening Angle ◽  
National Team ◽  
Ski Jumping ◽  
Accuracy And Precision ◽  
Real Time Tracking ◽  
Flight Parameters

For sports scientists and coaches, its crucial to have reliable tracking systems to improve athletes. Therefore, this study aimed to examine the validity of a wearable real-time tracking system (WRRTS) for the quantification of ski jumping. The tracking system consists of wearable trackers attached to the ski bindings of the athletes and fixed antennas next to the jumping hill. To determine the accuracy and precision of the WRRTS, four athletes of the German A or B National Team performed 35 measured ski jumps. The WRRTS was used to measure the 3D positions and ski angles during the jump. The measurements are compared with camera measurements for the in-flight parameters and the official video distance for the jumping distance to assess their accuracy. We statistically evaluated the different methods using Bland–Altman plots. We thereby find a mean absolute error of 0.46 m for the jumping distance, 0.12 m for the in-flight positions, and 0.8°, and 3.4° for the camera projected pitch and V-style opening angle, respectively. We show the validity of the presented WRRTS to measure the investigated parameters. Thus, the system can be used as a tracking system during training and competitions for coaches and sports scientists. The real-time feature of the tracking system enables usage during live TV broadcasting.

scholarly journals The IMPLEMENTATION OF TRACKING SYSTEM IN THE REAL TIME OF ANDROID FOR SENDING PERSONEL COORDINATION BASED ON MQTT.

2020 ◽  
Vol 2 (Oktober) ◽  
pp. 29-36
Author(s):  
Agus Faesol ◽  
Imam Ashar ◽  
Gatut Yulisusianto
Keyword(s):  
Real Time ◽  
Process Improvement ◽  
Communication Technology ◽  
Research Method ◽  
Tracking System ◽  
The World ◽  
Real Time Tracking ◽  
Access Rights ◽  
Point Data ◽  
The Military

Abstract: In the world of technology that is increasing, then as humans we will not be separated from the process improvement that occurs. From year to year, it is certain that this increase will certainly. Increasingly rapidly occurring in communication technology. Communication technology has also penetrated the military world, especially in MQTT-based communications. In this research, MQTT-based technology is applied to implement real time tracking system on android. This system is used to send the longitude and latitude coordinates of the personnel so that these points can be known directly via android. From this pure experimental research method, the coordinate point data will continue to be monitored and the existence can be known continuously. This system is designed on a VPS server or Virtual Private Server, so that all devices even though none of the networks can communicate with  each  other  as  long  as  they  have  access  rights  for application user.

Cutting Force Empirical Model of High-Speed Precision Hard Cutting GCr15

2009 ◽  
Vol 69-70 ◽  
pp. 301-305
Author(s):  
Jing Shu Hu ◽  
Yuan Sheng Zhai ◽  
Fu Gang Yan ◽  
Yu Fu Li ◽  
Xian Li Liu
Keyword(s):  
Cutting Force ◽  
Empirical Model ◽  
High Speed ◽  
Orthogonal Design ◽  
Cutting Speed ◽  
Least Square Method ◽  
Cutting Parameters ◽  
Least Square ◽  
Physical Parameters ◽  
Hard Cutting

In the cutting process, cutting force is one of the important physical parameters, which affects the generation of cutting heat, tool life and surface precision of workpiece directly. In this paper an orthogonal design of experiment and subsequent data is analyzed using high speed finish hard cutting GCr15 whose hardness is 65HRC. Cutting speed is 200-400m/min, to study the influence of cutting parameters on cutting force, cutting force empirical model has obtained from least square method.

Controlling a motorized electric wheelchair based on face tilting

2019 ◽  
Vol 15 (4) ◽  
Author(s):  
Hassan M. Qassim ◽  
Abdulrahman K. Eesee ◽  
Omar T. Osman ◽  
Mohammed S. Jarjees
Keyword(s):  
Quality Of Life ◽  
Real Time ◽  
Tracking System ◽  
Lower Limbs ◽  
Direct Impact ◽  
Excellent Performance ◽  
Electric Wheelchair ◽  
Real Time Tracking

AbstractDisability, specifically impaired upper and/or lower limbs, has a direct impact on the patients’ quality of life. Nowadays, motorized wheelchairs supported by a mobility-aided technique have been devised to improve the quality of life of these patients by increasing their independence. This study aims to present a platform to control a motorized wheelchair based on face tilting. A real-time tracking system of face tilting using a webcam and a microcontroller circuit has been designed and implemented. The designed system is dedicated to control the movement directions of the motorized wheelchair. Four commands were adequate to perform the required movements for the motorized wheelchair (forward, right, and left, as well as stopping status). The platform showed an excellent performance regarding controlling the motorized wheelchair using face tilting, and the position of the eyes was shown as the most useful face feature to track face tilting.

PRTS: A Passive RFID Real-Time Tracking System Under the Conditions of Sparse Measurements

2018 ◽  
Vol 18 (5) ◽  
pp. 2097-2106 ◽  
Author(s):  
Run Zhao ◽  
Qian Zhang ◽  
Dong Li ◽  
Haonan Chen ◽  
Dong Wang
Keyword(s):  
Real Time ◽  
Tracking System ◽  
Real Time Tracking ◽  
Sparse Measurements ◽  
Passive Rfid
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