Detection of Electromagnetic Pulse Induced Hazard on Electroexplosive Device Based on Optical-Fiber Fluorescence

2011 ◽  
Vol 383-390 ◽  
pp. 7492-7495
Author(s):  
Lan Shu Liu ◽  
Wen Song Zhang ◽  
Xiang Ping Zhu
Keyword(s):  
Optical Fiber ◽  
Electromagnetic Interference ◽  
Electromagnetic Pulse ◽  
Hazard Analysis ◽  
Fast Response ◽  
Induced Current ◽  
Core System ◽  
The Core ◽  
Security And Reliability ◽  
Set Up

The electroexplosive devices(EED) are widely used in the core system of rocket, missile and nuclear weapons. Hazard analysis and measurement of electromagnetic pulse is of great importance to the security and reliability of EED. In this article, an optical-fiber fluorescence temperature sensor is proposed for analyzing hazard induced by electromagnetic pulse of EED. The temperature of EED can be measured through the fluorescence lifetime, then the induced current is obtained, and thereby the electromagnetic pulse induced hazard can be draw. The experiments show that, the set-up of this proposal can works with high precision and fast response, and immune to the electromagnetic interference.

scholarly journals Design of Wideband GHz Electric Field Sensor Integrated with Optical Fiber Transmission Link for Electromagnetic Pulse Signal Measurement

Sensors ◽  
2018 ◽  
Vol 18 (9) ◽  
pp. 3167 ◽  
Author(s):  
Guogang Zhang ◽  
Wenfan Li ◽  
Lu Qi ◽  
Jingcun Liu ◽  
Zhengxiang Song ◽  
...  
Keyword(s):  
Electric Field ◽  
Optical Fiber ◽  
Electromagnetic Interference ◽  
High Frequency ◽  
Electromagnetic Pulse ◽  
Optical Signal ◽  
Optical Fiber Transmission ◽  
Voltage Signal ◽  
Field Sensor ◽  
Transmission Link

The detection of high frequency overvoltage and partial discharge is of great significance in evaluating the insulation condition of high-voltage power equipment. A wideband GHz electric field (E-field) sensor for electromagnetic pulse (EMP) signal measurement was proposed in this paper. An optical fiber transmission link was adopted in the design in order to implement high-voltage isolation and reduce electromagnetic interference during transmission. The designed sensor was mainly made up of a differential electric field (D-dot) antenna, transmitter, and receiver. The D-dot antenna was designed to detect high frequency E-field strength and generate a corresponding voltage signal, which was converted into an optical signal by the transmitter. The optical signal could be transmitted a large distance through an optical fiber without electromagnetic interference and changed back to a voltage signal again by a receiver. The design process of the sensor was introduced in detail, and experiments were performed using a gigahertz transverse electromagnetic (GTEM) cell and an EMP simulator to verify it. The results indicated that the designed sensor had a good performance besides an expectable delay due to the optional amplifier.

What face familiarity feelings say about the lateralization of specific entities within the core system

2019 ◽  
Vol 42 ◽  
Author(s):  
Guido Gainotti
Keyword(s):  
Temporal Lobe ◽  
Memory System ◽  
Core System ◽  
The Core ◽  
Memory Traces ◽  
Specific Memory ◽  
Target Article ◽  
Temporal Structures ◽  
The Right

Abstract The target article carefully describes the memory system, centered on the temporal lobe that builds specific memory traces. It does not, however, mention the laterality effects that exist within this system. This commentary briefly surveys evidence showing that clear asymmetries exist within the temporal lobe structures subserving the core system and that the right temporal structures mainly underpin face familiarity feelings.

scholarly journals Calculation and Analysis of Induced Current in Optical Fiber Composite Overhead Ground Wire

2021 ◽  
Vol 1887 (1) ◽  
pp. 012022
Author(s):  
Fan Yifeng ◽  
Li Xingzhou ◽  
Liu Chengyuan’ ◽  
Jing Yihang ◽  
Li Xudong
Keyword(s):  
Optical Fiber ◽  
Fiber Composite ◽  
Induced Current

A survey of some FORTRAN implementations of the Core System

1978 ◽  
Vol 12 (4) ◽  
pp. 67-73 ◽  
Author(s):  
Peter Bono ◽  
Margaret Polisher
Keyword(s):  
Core System ◽  
The Core

Automatic set-up for advanced optical fiber elements manufacturing

2005 ◽  
Author(s):  
Karol Stasiewicz ◽  
Leszek R. Jaroszewicz
Keyword(s):  
Optical Fiber ◽  
Set Up

scholarly journals Microcautery based on zinc metallic nanoparticles photodeposited on the core of an optical fiber

2017 ◽  
Vol 392 ◽  
pp. 492-497 ◽  
Author(s):  
P. Zaca-Morán ◽  
C.F. Pastelín ◽  
C. Morán ◽  
G.F. Pérez-Sánchez ◽  
F. Chávez
Keyword(s):  
Optical Fiber ◽  
Metallic Nanoparticles ◽  
The Core

scholarly journals An Optical Fiber Sensor Based on La2O2S:Eu Scintillator for Detecting Ultraviolet Radiation in Real-Time

Sensors ◽  
2018 ◽  
Vol 18 (11) ◽  
pp. 3754 ◽  
Author(s):  
Yongji Yan ◽  
Xu Zhang ◽  
Haopeng Li ◽  
Yu Ma ◽  
Tianci Xie ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Response Time ◽  
Electromagnetic Interference ◽  
Uv Light ◽  
Optical Fiber Sensor ◽  
Temperature Response ◽  
Superior Performance ◽  
Fiber Sensor ◽  
Uv Detectors

A novel ultraviolet (UV) optical fiber sensor (UVOFS) based on the scintillating material La2O2S:Eu has been designed, tested, and its performance compared with other scintillating materials and other conventional UV detectors. The UVOFS is based on PMMA (polymethyl methacrylate) optical fiber which includes a scintillating material. Scintillating materials provide a unique opportunity to measure UV light intensity even in the presence of strong electromagnetic interference. Five scintillating materials were compared in order to select the most appropriate one for the UVOFS. The characteristics of the sensor are reported, including a highly linear response to radiation intensity, reproducibility, temperature response, and response time (to pulsed light) based on emission from a UV source (UV fluorescence tube) centered on a wavelength of 308 nm. A direct comparison with the commercially available semiconductor-based UV sensor proves the UVOFS of this investigation shows superior performance in terms of accuracy, long-term reliability, response time and linearity.

Research on Multimedia Sports Humanistic Information Systems

2014 ◽  
Vol 926-930 ◽  
pp. 2706-2709
Author(s):  
Ming Wen Hu
Keyword(s):  
Information System ◽  
Information Systems ◽  
Program Implementation ◽  
Social Life ◽  
Technology Development ◽  
Rapid Development ◽  
Development Environment ◽  
Sports Culture ◽  
The Core ◽  
Set Up

With the rapid development of social productive forces and increasingly higher level of social life, the sports humanity as the core spirit of sports culture in informational times, which is the sum of the psychological aspects of sports culture from the cultural spirit. Its essence is the pursuit of truth, good and beautiful as the core values and ideals, people's healthy development as the ultimate goal. This paper discusses basic mode ,the basic framework of the multimedia sports humanistic information system, the processing technology, development environment ,tools and methods . Through the analysis program implementation elements and design ideas of multimedia sports humanistic information system, in order to set up multimedia sports humanistic information systems, we proposes a viable framework and models with a theoretical basis and practical value.

scholarly journals Machine Learning and Artificial Intelligence in Online Fake Transaction Alerting

2015 ◽  
Vol 3 (2) ◽  
pp. 115-126 ◽  
Author(s):  
Naresh Babu Bynagari
Keyword(s):  
Artificial Intelligence ◽  
Machine Learning ◽  
Fraud Detection ◽  
Learning Ability ◽  
The Core ◽  
The Past ◽  
Music Selection ◽  
Intelligent Analysis ◽  
Set Up ◽  
Detection Mechanisms

Artificial Intelligence (AI) is one of the most promising and intriguing innovations of modernity. Its potential is virtually unlimited, from smart music selection in personal gadgets to intelligent analysis of big data and real-time fraud detection and aversion. At the core of the AI philosophy lies an assumption that once a computer system is provided with enough data, it can learn based on that input. The more data is provided, the more sophisticated its learning ability becomes. This feature has acquired the name "machine learning" (ML). The opportunities explored with ML are plentiful today, and one of them is an ability to set up an evolving security system learning from the past cyber-fraud experiences and developing more rigorous fraud detection mechanisms. Read on to learn more about ML, the types and magnitude of fraud evidenced in modern banking, e-commerce, and healthcare, and how ML has become an innovative, timely, and efficient fraud prevention technology.

Sign in / Sign up

Export Citation Format

Share Document