scholarly journals UAV prototype for localization and identification of radioactive contamination and emitters

2021 ◽  
Vol 253 ◽  
pp. 08001
Author(s):  
S. Moretto ◽  
F.E. Pino Andrades ◽  
J. Delgado ◽  
C.L. Fontana ◽  
D. Fabris ◽  
...  
Keyword(s):  
Data Acquisition ◽  
Gamma Spectroscopy ◽  
Detection System ◽  
Sampling Rate ◽  
Radiation Detection ◽  
Medium Size ◽  
Discrimination Capability ◽  
Detection Systems ◽  
Aerial Vehicle ◽  
Data Acquisition Module

The Dragon (Drone for RAdiation detection of Gammas and Neutrons) prototype aims at designing and developing an unmanned aerial vehicle (UAV) equipped with a detection system able to identify radioactive materials, spread over an area or located in a specific position. The system is focused on the localization of the unknown emitter and its subsequently identification. The proposed prototype is made up of two easily interchangeable detection systems, one will be used as a counter while the second will be aimed to perform goodresolution gamma spectroscopy. Both solutions have neutron gamma discrimination capability in order to be suitable for special nuclear materials (SNM) detection in gamma contamination background. The data acquisition module is made up of a compact digitizer board (RedPitaya, sampling rate of 125 MHz and 14 bits of resolution.), a mini computer (Raspberry, for example). This combination allows to install an embedded operating system (e.g. Linux) that can run the necessary software for the Data Acquisition (DAQ), like the ABCD distributed DAQ. Our contribution will be aimed to show a comprehensive characterization of the two detection systems, a medium size CLLB scintillation detector, and a large plastic scintillator, EJ-276, in order to assess their potential use in a UAV-based radiation monitoring system.

Research on Miner Detection System

2014 ◽  
Vol 1055 ◽  
pp. 246-249
Author(s):  
Ming Xiao Ma ◽  
Xing Guang Li ◽  
Wei Cui
Keyword(s):  
Data Acquisition ◽  
Detection System ◽  
Block Diagram ◽  
Logical Structure ◽  
Working Process ◽  
Millimeter Wave Imaging ◽  
System Composition ◽  
Wave Imaging ◽  
Special Environment ◽  
Data Acquisition Module

In view of the mine special environment, with passive millimeter wave imaging technology applied to mine body hidden contraband detection as the background, this paper has design of miner detection system. This paper gives the miner detection system composition block diagram and working process, and design the data acquisition module, give the data acquisition module internal logical structure.

The Research on Underground Millimeter-Wave Detection System

2014 ◽  
Vol 624 ◽  
pp. 348-351
Author(s):  
Ming Xiao Ma ◽  
Hao Yu Liu ◽  
Qiang Shao
Keyword(s):  
Data Acquisition ◽  
Millimeter Wave ◽  
Detection System ◽  
Block Diagram ◽  
Inspection System ◽  
Security Issues ◽  
Wave Detection ◽  
Design Scheme ◽  
Data Acquisition Module

This paper puts forward a safety inspection system for the security issues of miners carry contraband under well. This paper give the composition block diagram of the underground millimeter-wave detection system, and design the data acquisition module, present a design scheme and give the work flowchart.

An Integrated System for Conducting Radiological Surveys of Contaminated Sites

2009 ◽  
Author(s):  
Jay P. McCown ◽  
Donna M. Rogers ◽  
Charles A. Waggoner
Keyword(s):  
Data Quality ◽  
Detection System ◽  
Radiation Detection ◽  
Digital Signal ◽  
Field Testing ◽  
Integrated System ◽  
Detection Systems ◽  
Lanthanum Bromide ◽  
Signal Processing Algorithms ◽  
Integrated Detection

This paper describes an integrated detection system that has been developed to conduct radiological surveys of sites suspected of contamination of materials such as depleted uranium. This system utilizes cerium activated lanthanum bromide and thallium activated sodium iodide gamma detectors and can be easily adapted to include units for detecting neutrons. The detection system includes software controlling the collection of radiological spectra and GPS data. Two different platforms are described for conducting surveys, a modified zero turn radius (ZTR) mower and a three-wheeled cart that is manually pushed. The detection system software controlling data collection has components that facilitate completing a gridless survey on user specified spacings. Another package confirms that all data quality activities (calibrations, etc.) are conducted prior to beginning the survey and also reviews data to identify areas that have been missed for which data quality falls below user designated parameters. Advanced digital signal processing algorithms are used to enhance the interpretation of spectra for conducting background subtractions and for mapping. Data from radiation detection instruments and GPS antennae are merged and made compatible with mapping using Geosoft Oasis montaj software. A summary of system performance during field-testing is included in the paper. This includes survey rate, detection limits, duty cycle, supporting ancillary equipment/material, and manpower requirements. The rate of false positives and false negatives is discussed with the benefits of surveys conducted using synergetic detection systems such as electromagnetic induction imaging.

scholarly journals Reliability of Data Acquisition and Processing Approaches for Chromatography Detection Systems in Pharmacy

2020 ◽  
Author(s):  
◽  
David Thomas Marehn
Keyword(s):  
Data Acquisition ◽  
High Performance ◽  
Method Development ◽  
Signal To Noise Ratio ◽  
Sampling Rate ◽  
Software Products ◽  
Detection Systems ◽  
Double Entry ◽  
Data Acquisition And Processing ◽  
Development And Validation

Nowadays pharmaceutical analysis and industry could not be imagined without using chromatographic methods like the High Performance Liquid Chromatography (HPLC) and Gas Chromatography (GC). Therefore, the field of chromatography is already firmly anchored in the three important, regional pharmacopeias: EP, USP and JP. Deficits of specifications within these pharmacopoeias relating to the detector parameters sampling rate and signal filtration are the major motivation of this thesis. Furthermore investigations on the data acquisition and processing within the detectors and software products dealing with collected data were done. Several concepts like double entry method, smoothing optimization and signal filtration based on persistence have been developed and are used as tools to examine the data integrity of commercial Chromatography Data System (CDS), improve the signal-to-noise ratio of small peaks to lower the LOD and LOQ by efficient denoising, and determine the suitable filter parameters and sampling rates an user can apply on his system to accelerate the method development and validation. All developments have been tested on simulated and real chromatograms and have shown that they are suitable for their specific purposes. In the end optimizations in the concepts still exist but some new aspects in the long-term investigated field of chromatography have been discovered.

scholarly journals State-of-the-Art Mobile Radiation Detection Systems for Different Scenarios

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1051
Author(s):  
Luís Marques ◽  
Alberto Vale ◽  
Pedro Vaz
Keyword(s):  
Gamma Ray ◽  
Detection System ◽  
Radiation Detection ◽  
Nuclear Materials ◽  
Extensive Literature ◽  
Silicon Photomultiplier ◽  
Radioactive Materials ◽  
Detection Systems ◽  
Cooperative Detection ◽  
New Research

In the last decade, the development of more compact and lightweight radiation detection systems led to their application in handheld and small unmanned systems, particularly air-based platforms. Examples of improvements are: the use of silicon photomultiplier-based scintillators, new scintillating crystals, compact dual-mode detectors (gamma/neutron), data fusion, mobile sensor networks, cooperative detection and search. Gamma cameras and dual-particle cameras are increasingly being used for source location. This study reviews and discusses the research advancements in the field of gamma-ray and neutron measurements using mobile radiation detection systems since the Fukushima nuclear accident. Four scenarios are considered: radiological and nuclear accidents and emergencies; illicit traffic of special nuclear materials and radioactive materials; nuclear, accelerator, targets, and irradiation facilities; and naturally occurring radioactive materials monitoring-related activities. The work presented in this paper aims to: compile and review information on the radiation detection systems, contextual sensors and platforms used for each scenario; assess their advantages and limitations, looking prospectively to new research and challenges in the field; and support the decision making of national radioprotection agencies and response teams in respect to adequate detection system for each scenario. For that, an extensive literature review was conducted.

scholarly journals Design of bio-inspired binocular UAV detection system based on improved STC algorithm of scale transformation and occlusion detection

2021 ◽  
Vol 13 ◽  
pp. 175682932110048
Author(s):  
Huajun Song ◽  
Yanqi Wu ◽  
Guangbing Zhou
Keyword(s):  
Detection System ◽  
Rapid Development ◽  
Reference Value ◽  
Scale Transformation ◽  
Hardware System ◽  
Time Requirements ◽  
Aerial Vehicle ◽  
Spatio Temporal ◽  
Small Targets ◽  
Vision Detection

With the rapid development of drones, many problems have arisen, such as invasion of privacy and endangering security. Inspired by biology, in order to achieve effective detection and robust tracking of small targets such as unmanned aerial vehicles, a binocular vision detection system is designed. The system is composed of long focus and wide-angle dual cameras, servo pan tilt, and dual processors for detecting and identifying targets. In view of the shortcomings of spatio-temporal context target tracking algorithm that cannot adapt to scale transformation and easy to track failure in complex scenes, the scale filter and loss criterion are introduced to make an improvement. Qualitative and quantitative experiments show that the designed system can adapt to the scale changes and partial occlusion conditions in the detection, and meets the real-time requirements. The hardware system and algorithm both have reference value for the application of anti-unmanned aerial vehicle systems.

Shielding of skyshine interference with radiation detection systems

2009 ◽  
Author(s):  
R.T. Kouzes ◽  
K.E. Conlin ◽  
W.J. Kernan ◽  
E.K. Mace ◽  
E.R. Siciliano ◽  
...  
Keyword(s):  
Radiation Detection ◽  
Detection Systems
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