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which sensor used for coal mines
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An Integrated Environment Monitoring System for Underground Coal Mines
Environment monitoring is important for the safety of underground coal mine production, and it is also an important application of Wireless Sensor Networks (WSNs). We put forward an integrated environment monitoring system for underground coal mine, which uses the existing Cable Monitoring System (CMS) as the main body and the WSN …
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What Happened to the Canary in the Coal Mine? The Story …
Mining foreman R. Thornburg shows a small cage with a canary used for testing carbon monoxide gas in 1928. George McCaa, U.S. Bureau of Mines
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Distributed FBG Temperature Sensor for Coal Mine Fire …
For this multiple fiber Bragg grating (FBG) sensors can be used for detecting deviation in temperature in underground coal mines to detect the coal mine fire before its combustion. Conventionally, electrical temperature sensors like thermistors (range: − 50 to 250 °C), resistance temperature detectors (RTD) (range: − 196 to 482 °C), and ...
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Gas Detection & Monitoring Systems used in Mining
Mine Gas is a natural product, produced during the geochemical conversion of organic substances to Coal (during carbonisation). The main constituents of mine gas are Oxygen, Nitrogen, Carbon Dioxide and Methane. If blasting operations are used in the mine, then Carbon Monoxide (CO) can occur in large quantities.
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Development of a Coal Dust Concentration Sensor Based on …
At present, the coal dust concentration sensor in coal mines mainly adopts the technology. The dust concentrations produced in coal mines can reach up to 500 mg/m 3. Hence, the dust can easily block the pipeline and pollute the photodiode of the light-scattering dust concentration sensor. To ensure detection accuracy, the optical sensor …
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Monitoring System for Coal Mine Safety Based on Wireless Sensor …
In view of the problems of explosive, corrosion and accidents in underground coal mine production, this paper designs a monitoring system based on wireless sensor network, which can monitor the gas concentration, temperature and humidity parameters, and alarm when the parameters exceed the fixed value. Experiments show that the system is stable …
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High performance and low temperature coal mine gas sensor …
High resistance to RH is an essential for sensors which used in coal mines. ... (25 °C) under UV excitation showed an acceptable response (~23%) which makes it possible to use it in coal mines ...
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An Intelligent Fire-Fighting Robotic System to Combat Fire in Coal Mines
The sensor module used in the robot is slightly different from the sensor module used in the coal mine chamber. This sensor module consists mainly of the two most vital sensors. These are flame sensors and proximity sensors that are to be associated with the robot. Flame Sensor:
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Which Gas Sensor We Can Use In Mining? | GDS Corp
Instead, contact an Applications Engineer at GDS to discuss which detection system will best meet your needs. 1245 Butler Rd League City, TX 77573. 409-927-2980. 409-927-4180. Due to the many complexities associated with mining operations, it is essential the best possible detection systems be selected and installed in shafts.
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A wireless charging algorithm for rechargeable …
In most coal mines, a working day (24 h) is equally divided into three shifts. Each shift lasts for 8 h. Two of these three shifts are used for coal mining, called production shifts (see Figure 2). The third shift is …
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Fibre optic sensors for coal mine hazard detection
Coal mine micro-seismic events detection based on fibre optic accelerometers. FBG accelerometer sensors are installed such that they can cover the …
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A Wireless Sensor Network Used in Coal Mines
A wireless sensor network used at coal faces to acquire sensor data is designed. Based on the characteristics of coal faces, a special topology of the wireless sensor network is adopted, which makes the network more suitable for the surroundings of coal faces. By analyzing the relation between signal strength and the successful probability of …
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(PDF) A Smart Helmet for Worker Safety in Mining
Here we use temperature sensor, gas sensor, GPS, humidity sensor etc. View. Show abstract. ... South Africa's coal mining industry is of vital economic importance. This paper describes some of the ...
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Recent advances in laser gas sensors for applications to …
In the past decade, gas sensors based on tunable diode laser absorption spectroscopy (TDLAS) have been extensively studied and tailored for use in the coal mine industry because of their ...
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Predicting seismic events in coal mines based on underground sensor
Expert methods for classifications of seismic hazards in coal mines. Two basic methods are routinely used by experts for the assessment of seismic hazards in Polish coal mines. These methods are often called seismic and seismoacoustic, respectively (Kabiesz et al., 2013). The essence of the seismic method is the analysis of …
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A novel wireless sensor network deployment scheme for environmental
A typical longwall mine consists of a longwall face, goaf and intake and return airways. The layout of sensor node deployment in the maingate (intake airway) and tailgate (return airway) of a retreating longwall coal mine has been shown in Fig. 1.The gate roads are divided into a number of rectangular logical partitions known as monitoring regions (M).
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Using Sensors to Keep Coal Mines Safe
Edinburgh Sensors, a sensor-based system manufacturer that specializes in sensors for mining operations, has been offering gas monitor technology for many years. Gascard NG, an infrared-based gas …
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IoT Based Multimode Sensing Platform for Underground Coal Mines …
3.2 Design of WSN. The mining activity can be performed either in one or multiple areas in an underground coal mine [].The logical topology for both the purposes differs for making the network power efficient, reliable, and improving the coverage area and efficiency [].Therefore, there is a need to select a sensor network, which can support …
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Sensors and Detectors
Sensor-based detection and monitoring solutions for the mining industry include: Sensors to measure and monitor airflow and pressure in mine shafts. Temperature sensor remote monitoring systems. Gas and smoke detectors. Level measurement sensors and …
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Fiber optic sensors-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 ...
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Wireless Sensor Network Based Underground Coal Mine
Nowadays, wireless underground sensor network (WUSN) [2,3,4] is used for continuous monitoring of environmental parameters of underground coal mines. WUSN can be realized by deploying sensor nodes in the wall …
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Sensors and Technologies in Coal Mines Monitoring for …
Seismic sensors are used to detect ground vibrations and seismic activity in coal mines. These sensors can detect the slightest vibrations caused by explosions, machinery, or …
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Toxic Gas Sensors Replace Canaries and Mice in Mines
Coal mining fatalities alone, tracked from 1900 through 2014, confirm the claim; in 1900, for example, there were 448,581 miners and 1,489 fatalities, while in 2014 the number of miners totaled approximately 120,000, but there were only 16 fatalities. ... It should be noted that all sensors used in the mining industry must function under ...
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Wireless sensor network based fire monitoring in underground coal mines
In this paper, we propose a WSN-based fire monitoring system for underground coal mines using fuzzy logic approach. The sensor nodes are deployed in the underground coal mines for collecting the monitoring data, such as temperature and concentrations of various gases like CO, CO 2 and O 2. These data are input to the fuzzy …
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Using Sensors to Monitor Airflow and Pressure in …
Sensors Used to Monitor Airflow and Pressure. As a crucial aspect of underground mines extracting coal, remote monitoring and network design of the ventilation have become more computerized. …
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IoT based Coal Mine safety Monitoring System
Methane is the number one killing agent in coal mines if miners are alerted on time at least a thousand lives can be saved in a year. These sensors measure the quantity of contamination at the exact location and adjust the ventilation system accordingly. Electrochemical sensors are mostly used to measure gases in the environment. IOT …
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A Wireless Sensor Network Used in Coal Mines | Request …
A wireless sensor network used at coal faces to acquire sensor data is designed. Based on the characteristics of coal faces, a special topology of the wireless sensor network is adopted, which ...
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Using Sensors to Monitor Airflow and Pressure in Mine Shafts
Sensors Used to Monitor Airflow and Pressure. As a crucial aspect of underground mines extracting coal, remote monitoring and network design of the ventilation have become more computerized. Remote monitoring devices enable the observation of several characteristics of the underground mine environment. A …
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Recent advances in laser gas sensors for applications to …
In the past decade, gas sensors based on tunable diode laser absorption spectroscopy (TDLAS) have been extensively studied and tailored for use in the coal …
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Using wireless underground sensor networks for mine and …
Abstract. Wireless sensor networks (WSNs) are a specific type of networks that link sensors and have the potential to greatly benefit monitoring of coal mine …
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High performance and low temperature coal mine gas …
High resistance to RH is an essential for sensors which used in coal mines. ... (25 °C) under UV excitation showed an acceptable response (~23%) which makes 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 …
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What Sensors are Used in the Mining Industry?
Imaging, three-dimensional (3D) mapping and ranging. Image and mapping sensors, such as visual, infrared (IR), and depth sensors, are typically used in the mining industry for remote and local …
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Proposal for Efficient Routing Protocol for Wireless Sensor …
The existing uneven clustering algorithm have disadvantages of coal mine with long strip structure. This paper proposed a UCEB-CMF protocol to improve the safety of coal mine monitoring system. The new protocol optimize the selection mechanism of the cluster head, avoid the lower residual energy nodes become the cluster head. Improve …
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Improving coal mine safety with internet of things (IoT) …
An essential measure of safe production in the coal mine is the sensor networks and control systems using the Industrial Internet of Things. Thus, the method is used to recognize that the quantity of coal is registered in different industries to improve productivity and safety used to transport coal, thereby conserving the coal mines and …
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History in gas detection: Coal Mine Canaries & Flame Safety Lamps
In the early 19 th century we have the first recorded gas detector or gas tester. They enlisted a person to wear a wet blanket and carry a wick with the end lit on fire. They would move the lit wick along the walls of the mine, and if there was a pocket of methane gas, the wick would ignite. The damp blanket kept the tester safe most of the time.