The Research and Implementation of Electrostatic Detonating Gas Simulation Experiment System Controller Based on Nios II

2011 ◽  
Vol 219-220 ◽  
pp. 750-753
Author(s):  
Xiu Jie Dong ◽  
Sheng Jie Ma ◽  
Qi Xiao Sun ◽  
Liang Zhang
Keyword(s):  
Human Body ◽  
Simulation Experiment ◽  
Electrostatic Discharge ◽  
Gas Explosion ◽  
Experiment System ◽  
Gas Concentration ◽  
Nios Ii ◽  
Series Of Experiments ◽  
System Controller ◽  
Detonating Gas

The electrostatic discharge detonating gas simulation experiment system based on Nios II is developed in this paper.This system uses flexible and highly efficient SOPC technology,which embeds many functional modules.The system can simulate the mine gas environment, measure the oxygen, temperature and the gas concentration that most likely detonating gas, and real-time display in the LED screen, so as to obtain important data of gas explosion in coal environmental, which provide theoretical and experimental basis for farmulating standards of electrostatic security of human body and the safety of production in coal mine. It can conduct a series of experiments about electrostatic discharge of human body detonating gas mixture.

Detonating Gas Simulation Experiment System Based on the Dynamic ESD Model on Human Body

2011 ◽  
Vol 704-705 ◽  
pp. 407-411
Author(s):  
Xiu Jie Dong ◽  
Xu Chen ◽  
Jing Chang Zhang ◽  
Liang Zhang
Keyword(s):  
Software Design ◽  
Human Body ◽  
Coal Mine ◽  
Simulation Experiment ◽  
Dynamic Change ◽  
Mixed Gas ◽  
Gas Detonation ◽  
Experiment System ◽  
Gas Concentration ◽  
Mine Environment

Variation of dynamic electrostatic discharge (ESD) on human body that miners’ voltage,capacitance and resistance varies with the body’s dynamic change in coal mine environment is studied. A circuit model of the body’s dynamic ESD in coal mine environment is constructed. The simulation experiment system of the gas detonation by the human body ESD in coal mine is developed successfully. System principle, system hardware design and system software design is expounded. Simulation experiments with different body’s ESD model and the discharge gap has been done. Experimental results show that the system can be carried out series of experiments of the human body ESD model detonating mixed gas, it is concluded that the gas concentration that is the easiest to be detonated is about 8.7%. but not the higher gas concentration is , the more explosive is. The results provide an theoretical and experimental evidence for the safe electrostatic production and management in coal mine Keywords:simulation experiment system; dynamic ESD model ; hardware and software design ; human body capacitance

scholarly journals Research on simulation of human body electrostatic discharge on detonating gas in coal mines

2013 ◽  
Vol 418 ◽  
pp. 012052
Author(s):  
Shengman Liu ◽  
Tingtai Wang ◽  
Yuguan Zhang ◽  
Jingchang Zhang
Keyword(s):  
Human Body ◽  
Electrostatic Discharge ◽  
Coal Mines ◽  
Detonating Gas

A study on source identification of gas explosion in coal mines based on gas concentration

Fuel ◽  
2021 ◽  
Vol 290 ◽  
pp. 120053
Author(s):  
Baiwei Lei ◽  
Chenguang Zhao ◽  
Binbin He ◽  
Bing Wu
Keyword(s):  
Source Identification ◽  
Coal Mines ◽  
Gas Explosion ◽  
Gas Concentration

ELECTROSTATIC DISCHARGE EFFECT ON TMR RECORDING HEAD: A FLEX ON SUSPENSION CAPACITANCE APPROACH

2009 ◽  
Vol 23 (17) ◽  
pp. 3586-3590 ◽  
Author(s):  
NUTTACHAI JUTONG ◽  
APIRAT SIRITARATIWAT ◽  
DUANGPORN SOMPONGSE ◽  
PORNCHAI RAKPONGSIRI
Keyword(s):  
Human Body ◽  
Electrostatic Discharge ◽  
Hard Disk Drives ◽  
Electrical Characteristics ◽  
Disk Drives ◽  
Human Body Model ◽  
Recording Head ◽  
Body Model ◽  
Recording Heads ◽  
First Time

Electrostatic discharge (ESD) effects on GMR recording heads have been reported as the major cause of head failure. Since the information density in hard-disk drives has dramatically increased, the GMR head will be no longer in use. The tunneling magnetoresistive (TMR) read heads are initially introduced for a 100 Gbit/in2 density or more. Though the failure mechanism of ESD in GMR recording heads has not been explicitly understood in detail, a study to protect from this effect has to be done. As the TMR head has been commercially started, the ESD effect must be considered. This is the first time that the TMR equivalent circuit has been reported in order to evaluate the ESD effect. A standard human body model (HBM) is discharged across R+ and R- where the capacitances of flex on suspension (FOS) are varied. It is intriguingly found that the electrical characteristics of the TMR head during the discharge period depend on the discharge position. This may be explained in terms of the asymmetry impedance of TMR by using adapted Thevenin's theory. The effect of FOS components on TMR recording heads is also discussed.

Measurement and Protection of Human Body Electrostatic of Mobile User Terminal

2013 ◽  
Vol 753-755 ◽  
pp. 2170-2174
Author(s):  
Tian Hai Chang ◽  
Meng Yao Fu ◽  
Pei Pei Yin
Keyword(s):  
Human Body ◽  
Electrostatic Discharge ◽  
Measurement Data ◽  
Mobile User ◽  
Protective Measures ◽  
User Terminal ◽  
Environmental Relative Humidity ◽  
Main Factors ◽  
Parameters Measurement ◽  
Discharge Test

This paper, on the basis of the electrostatic discharge test of mobile user terminals and electrostatic parameters measurement of human body, got electrostatic potential of human body in different condition. The results show that the main factors effecting human body electrostatic are environmental relative humidity, humans dressing, human activities and so on. Then error between the experimental measurement data and the theoretical analysis result are analyzed. Finally proposed some protective measures according to the harm of human body electrostatic to mobile user terminal.

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