介绍了一种便携式瓦斯浓度监测仪的电子学系统。
An electronic system of the portable gas content monitor is described.
预测瓦斯浓度的变化对煤矿安全生产有着重要的意义。
Predict changes in gas concentration is safety in coal mines of great significance.
瓦斯隧道装药爆破前必须进行安全检查，确保瓦斯浓度小于1%。
Before charging and blasting in gas tunnel, safety inspection must be done to ensure the gas density less than 1%.
煤矿主扇风机的主要功能是保证井下空气畅通新鲜，降低瓦斯浓度。
The function of the main fan in coal mine is to keep fresh air and reduce the concentration of gas.
在煤炭开采过程中，井下瓦斯浓度的测量对煤矿安全生产非常重要。
In the process of mining, it is very important for mining safety to monitor gas concentration.
本文所设计的瓦斯预测报警系统可以连续监测井下的瓦斯浓度变化。
The system of gas predicting alarming is designed by the paper, and it can monitor continuously the change of gas density under mine.
有报道指出，由于空气中瓦斯浓度过大，一些老人小孩甚至在家中窒息。
So much was in the air that there are reports of small children and the elderly having suffocated on the fumes in their homes.
利用红外技术实现煤矿瓦斯浓度的实时检测是目前比较活跃的研究领域之一。
IR technique is one of the most active areas that researches into the real-time detection of the concentration of Methane.
我国目前大部分煤矿属于瓦斯矿井，而由瓦斯浓度过高引发的安全事故频频发生。
At present, most coal mines in China are high gas concentration and caused the accidents occur frequently.
当前国内一般采用局部通风机进行矿井通风，以稀释瓦斯浓度，消除煤矿事故隐患。
To dilute gas concentration, most coal mine use local fan ventilate, and decrease the possibility of fire damp explosion.
利用混沌时间序列短期可以预测的特点，对选取的某两处煤矿构建了瓦斯浓度预测模型。
Using the ability of short-term predicting for chaotic time series, the paper constructed a gas concentration prediction model for certain coal mines.
现介绍一种基于光纤传感的瓦斯浓度实时检测技术，具有灵敏度高、可实时检测等优点。
The method is introduced that is the monitoring the concentration of gas basing on fiber sensor. The method has optimum sensitivity and momently testing.
现介绍一种基于光纤传感的瓦斯浓度实时检测技术，具有灵敏度高、可实时检测等优点。
The method is introduced that is the monitoring the concentration of gas basing on fiber sensor. The method has optimum sen...
采用它判别瓦斯与空气混合气体的爆炸危险性时，比用瓦斯浓度三角形更加全面、准确。
Using this chart to distinguish the explosion danger caused by the mixture of gas and air is more complete and accurate than the chart of gas detonation triangle.
增加风速，可以使采空区内高浓度瓦斯向深部推移，从而降低工作面及上隅角瓦斯浓度。
By enhancing the wind speed, the higher concentration methane can move to deeper goaf, which can reduce the methane concentration in working face and top corner.
实时准确地检测地铁隧道施工及运营期间的瓦斯浓度对保障安全生产具有十分重要的意义。
Therefore, it is very important to measure the distribution of methane concentration during construction and operation of subway tunnel in real-time.
瓦斯爆炸事故频繁发生，对瓦斯浓度进行准确、实时检测和预警是治理瓦斯危害的有效手段。
Methane explosion accidents occur frequently, and accurate and real-time detection and early warning of methane concentration are the effective means of preventing these accidents.
该系统对煤矿开采前工作面、煤巷瓦斯浓度及可能的瓦斯突出都设计了有效的预测预防措施。
This system designed forecast and guard against measures on the work face before mining, same measures also projected the thickness of coal alley gas and the possibility of gas pop out.
本文将分类和预测等数据挖掘方法应用于瓦斯浓度的预测，是对煤矿瓦斯数据挖掘的应用和研究。
In this article, classification and prediction methods of data mining was applied to predict gas concentrations which is the application of data mining coal and gas research.
瓦斯检测采用热催化元件和补偿元件搭建电桥采集电路，通过瓦斯浓度非线性动态标定算法提高了瓦斯检测精度。
Gas measure adopt collection circuit based on the hot catalyses component and the compensate component, the arithmetic of the non-linear and dynamic advance the gas precision.
该节点通过微控制器和无线传输模块实时采集、处理、传输井下工作面的瓦斯浓度、CO浓度、温度、湿度等数据。
The node can collect, process and transmit data of gas concentration, co concentration, temperature and humidity of underground working face by microcontroller and wireless transmission module.
针对煤层钻孔抽放瓦斯后煤层孔隙裂隙发育致使瓦斯浓度下降，钻孔有效抽放期缩短的技术难题，首次提出二次封孔方法。
Gas concentrations drop, and the effective gas drainage period of holes is shortened, because pores and cracks in the coal seam become completely developed after gas drainage.
总结了一号煤矿301及其它综采面上隅角瓦斯浓度超限规律，详细分析了瓦斯涌出的来源及超限原因，提出了极富针对性的治理措施。
The ultralimit law of gas potency is summed up at No. 301 face and other faces in No. 1 Coal Mine. The origination of gas and causes of exceeding limit are analyzed. The harness measures are pointed.
系统采用C8051F单片机作为控制芯片、JN5121模块及瓦斯传感元件，自动记录巡检沿途地点编号、采样时间、瓦斯浓度等信息。
The system uses C8051F monolithic as control chip, JN5121 module and gas sensor, can automatically record inspection locations, sampling time, gas concentration and so on.
在煤矿安全问题中，瓦斯气体浓度是煤矿安全监测的重要指标之一。
In coal mine safety problem, gas strength is one of an important safety inspection factors.
在煤矿安全问题中，瓦斯气体浓度是煤矿安全监测的重要指标之一。
In coal mine safety problem, gas strength is one of an important safety inspection factors.
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