temperature sensors in coal mines

Early detection of spontaneous combustion of coal in ...

carbon monoxide in coal mines doesn't always indicate the sponcom because it can be produced at ambient mine temperature in coal mines (Moreby, 2005; Ma et al., 2007). Lu et al. (2004) analyzed the composition and quantities of carbon monoxide and ethylene produced by various coals .

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Fibre optic sensors for coal mine hazard detection ...

01-08-2018· A hot zone was detected in a sealed goaf of a China coal mine where temperature rose over 110 °C in 4 days. 4. Fibre optic sensor based coal mine seismic monitoring. With the increase of underground mining depth, so called coal mine dynamic hazards are also increasing, ...

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Research on Coal Mine Safety Monitoring System .

21-02-2018· 40. Rescue and Protection in Underground Coal Mines Using, - ijirset, 41. sDEVELOPMENT OF COAL MINE SAFETY SYSTEM USING, - IJESAT, 42. Design of Monitoring System for Coal Mine Safety Based on ...

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Application of Gas Monitoring Sensors in .

Application of Gas Monitoring Sensors in Underground Coal Mines and Hazardous Areas

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Nonlinear Dynamic Compensation Research on .

AbstractEnvironmental temperature measurement is a very important issue of environmental control system in coal mine movable refuge chamber. This paper proposes a kind of dynamic compensation method for the temperature sensors by using extended Kalman filtering algorithm, which is based on the reference model.

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EVALUATION OF SMOKE AND GAS SENSOR .

This sensor has not been approved by MSHA for use in U. S. underground coal mines. A combination optical and ionization smoke detector, approved and listed by UL but not approved for use in U.S underground coal mines, was also used in this study.

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Application of wireless sensor network for .

15-03-2018· From figure, it is observed that the WSN technique in underground coal mines has been widely explored in the areas of gas, mine personnel and equipment monitoring, however, it has not been adopted for monitoring some of the important parameters, such as temperature and humidity, air pressure, mine dust concentration, mine fire, mine explosion, roof fall.

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Methane Sensing for Coal Mining ... - Edinburgh .

In recent years, the traditional shielded lamps have been replaced with Methane detectors based upon Infrared absorption sensors to detect the build-up of Mine gas. In order to make the coal mine environment safer, ventilation air systems are now installed in mines, which add air and ventilate the mines at high flow rates, resulting in a ...

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Fire detection in coal mines based on .

– Due to the environmental conditions, the detection and identification of hazardous situations in coal mines is a challenge. The purpose of this research is to focus on the underground fire detection, especially of smoldering fires, which are characterized by the outgassing of CO and C2H4., – The study developed a system based on a single semiconductor gas sensor and sensors for relative ...

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Fiber optic sensor-based intelligent coal mines ...

Fiber optic sensors have become increasingly attractive for application in advanced intelligent coal mines, which consist of extensive sensor network to monitor the structural integrity, environmental safety and production parameters. Fiber optic based strain (mining pressure), temperature, water pressure, methane gas, seismic and ultrasound sensors can be used to monitor the condition of the ...

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Underground Coal Mine Monitoring with Wireless Sensor Networks

Underground Coal Mine Monitoring with Wireless Sensor Networks MO LI and YUNHAO LIU Hong Kong University of Science and Technology Environment monitoring in coal mines is an important application of wireless sensor networks (WSNs) that has commercial potential. We discuss the design of a Structure-Aware Self-Adaptive WSN system, SASA.

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Validation of temperature and humidity thermal .

In-mine experiments. Tests were conducted underground in the Experimental Mine at the NIOSH research laboratory in Pittsburgh, PA. A tent-type RA with a 1.7-m-high (5.5-ft-high) tent, an internal volume of roughly 55.3 m 3 (1,881 ft 3) and a floor surface area of about 31.8 m 2 (342 ft 2) was used for these tests (Fig. 1).This RA meets the unrestricted surface area requirement of 1.4 m 2 (15 ...

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Temperature Sensors In Coal Mines - cz-eu

Temperature Sensors In Coal Mines. Compliance Guides - Mine Safety and Health . MSHA's FINAL RULE ON CONVEYOR BELT, FIRE PREVENTION AND DETECTION, AND . in an underground coal mine, . separate CO sensors. Q. If a mine . Get Price And Support Online; Mobile Robot in Coal Mine Disaster Surveillance.

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Fibre optic sensors for coal mine hazard detection ...

01-08-2018· A hot zone was detected in a sealed goaf of a China coal mine where temperature rose over 110 °C in 4 days. 4. Fibre optic sensor based coal mine seismic monitoring. With the increase of underground mining depth, so called coal mine dynamic hazards are also increasing, ...

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Fire sensors and the detection of underground .

Abstract. This US Bureau of Mines study describes the results of research conducted in the Experimental Mine at Lake Lynn Laboratory on the response of fire-sensors to simulated mine fires, which include: a slowly-developing coal/conveyor belt fire, a rapidly burning liquid-fuel belt fire, and a liquid-fuel belt fire in the presence of diesel exhaust.

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Coal mine safety robot with GAS and temperature .

15-12-2014· Coal mine safety robot with GAS and temperature sensor. Coal mine safety robot with GAS and temperature sensor. Skip navigation Sign in. Search. Loading... Close. This video is unavailable.

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Research progress on coal mine laser methane .

SPIE Digital Library Proceedings. Sign In View Cart Help

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Coal mine dedicated PT100 temperature sensor .

SONBEST SLST2 Series PT100 platinum resistance sensor uses a purity of 99.9995% of the platinum wire around the system, its performance is stable, reproducible, high precision, in a certain temperature range with good linearity, is internationally recognized as a mature product, the International Temperature Scale ITS-90 also provides a special structure having a platinum resistor as 13.5033K ...

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Evaluation of fiber optic methane sensor using a .

01-11-2018· RSL conducted a series of laboratory and in-mine tests to examine the sensor's reliability and durability . The laboratory controlled tests conditions included high humidity, high rock dust concentrations, and vibration. RSL also performed in-mine tests subjecting the methane sensors to the conditions of a working underground coal mine .

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Fiber optic sensor-based intelligent coal mines

Fiber optic based strain (mining pressure), temperature, water pressure, methane gas, seismic and ultrasound sensors can be used to monitor the condition of the coal mine and provide information for accident prediction and early warning. We report for the first time an all fiber optic comprehensive coal mine safety monitoring system.

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Study of Real-Time Dry Bulb and Relative Humidity .

As the depth of mines increases, the temperature in the mine workings also increases due to the geothermal gradient. A questionnaire was prepared and sent to a number of mine ventilation engineers, consultants and academics in order to gain an understanding of their experiences and current views on real-time dry and relative humidity temperature monitoring practices.

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Evolution of Gas Sensors in the Mining Industry

Coal mining became a large-scale industry at the beginning of the 18th ... The use of sensors designed for gas detection in mines has developed from the miner's canary to infrared sensors. A Miner's ... The pellistor also contains an inactive ceramic bead to control the impact of ambient temperature and humidity interfering with it.

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Fiber optic sensor-based intelligent coal mines ...

Fiber optic sensors have become increasingly attractive for application in advanced intelligent coal mines, which consist of extensive sensor network to monitor the structural integrity, environmental safety and production parameters. Fiber optic based strain (mining pressure), temperature, water pressure, methane gas, seismic and ultrasound sensors can be used to monitor the condition of the ...

Get Price

Nonlinear Dynamic Compensation Research on .

AbstractEnvironmental temperature measurement is a very important issue of environmental control system in coal mine movable refuge chamber. This paper proposes a kind of dynamic compensation method for the temperature sensors by using extended Kalman filtering algorithm, which is based on the reference model.

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Hot environment - estimation of thermal comfort in deep ...

In China the average temperature of the original rock in state-owned coal mines ranges between 35.9 and 36.8ºC at the production level while the average mining depth was about 650 m by the year 2000, that would result in dry bulb temperatures exceeding 30ºC .

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Integrated Mine Safety Monitoring and Alerting System ...

In order to solve the problems, we designed a coal mine safety monitoring system based on wireless sensor network, which can improve the level of monitoring production safety and reduce accident in the coal mine. Zigbee technology provides a direction for scientists who commit to solve the safety monitoring problems of coal mine.

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Fire detection in coal mines based on .

– Due to the environmental conditions, the detection and identification of hazardous situations in coal mines is a challenge. The purpose of this research is to focus on the underground fire detection, especially of smoldering fires, which are characterized by the outgassing of CO and C2H4., – The study developed a system based on a single semiconductor gas sensor and sensors for relative ...

Get Price

Multigas detectors in mines - Adobe

mines but measures must go much further. Some underground coal mines require the monitoring of increased levels of carbon dioxide resulting from oxygen displacement. MSA can offer the ideal tool for this – the ALTAIR 5X multigas detector with field-proven integral pump and equipped with a reliable and long-lasting infrared sensor.

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Environmental Monitoring | Introduction | .

Other mines may monitor temperature (often wet and dry bulb) as a matter of course even though there is no problem. At those mines where temperature is a problem, it is usual to measure "effective temperature" which takes air velocity into account as well as wet and dry bulb temperatures, and work periods are shortened if the effective temperature is above a set limit.

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Fibre optic sensors for mine hazard detection

Fibre optic sensors for mine hazard detection ... We report the development of a comprehensive safety monitoring solution for coal mines. A number of fibre optic sensors have been developed and deployed for safety ... (FBG) based pressure and temperature sensors have been well developed.

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