Sensors | Free Full-Text | Experimental Study on Calibration …
Microseismic monitoring systems (MMS) have become increasingly crucial in detecting tremors in coal mining. Microseismic sensors (MS), integral components of MMS, profoundly influence positioning accuracy and energy calculations. Hence, calibrating these sensors holds immense importance. To bridge the research gap in MS …
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Data on methane concentration collected by underground coal mine sensors
The sensors recording the measurements are placed at various locations around the coal mine. The map of the coal mine area of interest is presented in Fig. 1. Download: Download high-res image (375KB) Download: Download full-size image; Fig. 1. Coal mine area map containing sensor locations.
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Integrated smart dust monitoring and prediction system for surface mine
Additionally, open-pit coal mining contributes to elevated PM levels, ... Among the commonly used sensors for detecting dust, smoke, and particles is the Dust Sensor, capable of detecting tiny ...
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EVALUATION OF SMOKE AND GAS SENSOR RESPONSES FOR FIRES OF COMMON MINE
The Conspec smoke sensor (S3) is an ionization-type smoke sensor which is also approved by MSHA for use in U. S. underground coal mines. This sensor uses a source of Americium 241 to ionize the air space between two electrodes.
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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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Sensors | Free Full-Text | The Future of Mine Safety: A …
A multi-sensor system [22,62,125] uses a combination of sensors, such as cameras, radar, LIDAR, and proximity sensors to collect information about the environment around the mobile mining machines and allowing miners to more easily detect potential hazards. 3D mapping [87,94,125] can be used to create accurate models of the …
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Fiber Bragg grating (FBG) sensors used in coal mines
The fiber Bragg grating (FBG) strain sensors were used for on-line monitoring of the stress variation of the lined wall in the gateway retained along the goaf of No. 3203 coal mining face in Dongtan Mine. The results showed that the FBG strain sensor with the wide measuring range could measure the stress variation accurately during the support …
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Coal Mine Safety Intelligent Monitoring Based on Wireless Sensor
Wireless Sensor Network (WSN) explores the use of the latest WSN technology in coal mine safety intelligent wireless monitoring, especially the three key technologies that need to solve the WSN wireless communication, transmission routing protocol and positioning algorithm for underground safety monitoring. The application of wireless sensor network …
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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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Recent advances in laser gas sensors for …
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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Fiber optic sensors-based intelligent coal mines
The sensor is made of steel armored cable and can be used in underground coal mines. Fig. 2. FBG temperature sensor for high voltage application. Fig. 3. FBG temperature sensor for mining ...
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Using wireless underground sensor networks for mine …
Wireless sensor networks (WSNs) are a specific type of networks that link sensors and have the potential to greatly benefit monitoring of coal mine applications, underground mine safety and localization of miners. Such systems can monitor the underground environment in real-time, provide information about the localization of …
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A novel temperature compensation approach of IR gas sensors in coal mines
The compensated sensors basically satisfy the gas detection requirements of ground-based instruments. However, since the coal mine temperature is greatly affected by the change of seasons, gas sensors are still of notable deviations in detection, failing to meet the requirements for quantitative analysis on hazardous gases in coal mines.
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Gas Detection & Monitoring Systems used in Mining
Coal mining refers to the process of extracting coal from the ground. Since the 1880s, coal has been extracted due to its energy content has been widely used to generate electricity. For example, steel and cement industries use coal as a fuel for extraction of iron and for cement production.
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(PDF) APPLICATION OF SENSORS FOR …
sensors and are feasible to use in underground coal mines. 2.4.1 Capacitive humidity sensor It consists of a hygroscopic dielectric material sandwiched between a pair of electrodes forming
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High performance and low temperature coal mine gas …
The prepared ZnO nanorod sensor was tested for coal mine gas detection. The advantage of our approach is achieving fast nanorods growth at low temperature …
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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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Automation in U.S. longwall coal mining: A state-of-the-art …
Manual room and pillar mining method was developed and used ever since coal mining began in the 18th century. Mechanized room and pillar mining began in the late 1920s and reached full mechanization in the late 1940s. ... A gamma-ray coal thickness sensor was developed in late 1989 to early 1990s [4], [5] and mounted on the shearer …
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Evolution of Gas Sensors in the Mining Industry
The use of sensors designed for gas detection in mines has developed from the miner's canary to infrared sensors. A Miner's Canary The canary (Serinus canaria) was commonly used by miners to alert them of the presence of toxic vapors such as the odorless carbon monoxide in hazardous areas of underground mining pits.
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Sensors | Free Full-Text | A Fiber Bragg Grating-Based …
Zhao et al. designed a displacement sensor using a fiber optic grating technology, which could be used to monitor tunnel roof displacement in coal mines. Zhou et al. [ 18 ] developed an active fiber optic gas sensor to monitor the concentration of a specific gas, which is ideal for detecting explosive or corrosive gases in some practical ...
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Dust Control in Mines: Methods, Sources, Solutions | Oizom
The market value of coal mines has varied significantly since 2010. In 2011, its market value increased to 1.3 billion US dollars but gradually decreased to 571 million US dollars until 2015. ... Real-time data from these robots' sensors can be used to improve dust control strategies, resulting in more efficient and focused treatments ...
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Wireless real-time sensing platform using vibrating wire …
Vibrating wire-based geotechnical sensors are widely used for stress measurement of strata in underground coal mines. These types of sensors have several advantages over other geotechnical sensors. However, the measurements from these sensors are taken in-situ using conventional readout unit manually till date even in the …
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IOT–BASED COAL MINE SAFETY MONITORING AND …
and is installed in coal mines. All sensor rankings are automatically fed into the thinking processors, generating the of ideas for them to investigate. Gas monitoring equipment is still running here to detect any potential problems, and a buzzer is used to alert the staff. In this framework, Fire sensors are used to detect the presence of flame.
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Sensors and Detectors
Sensors and monitoring systems for mining applications. Sensor-based detection and monitoring solutions for the mining industry include: Sensors to measure and monitor …
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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 …
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Zigbee-based wireless gas monitoring sensor alarm system in coal mine …
The software architecture adopts ZigBee protocol stack. The research shows that the proposed ZigBee wireless sensor network based coal mine underground gas monitoring system can help improve the real-time monitoring level and reduce safety risks in the complex and special environment of coal mine underground.
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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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Research on coal mine safety risk evolution and key hidden …
The key elements that affect coal mine safety risk accidents are obtained through quantitative research on the characteristic indicators of the complex network …
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Fibre Optic Sensors for Coal Mine Hazard Detection
Fibre Optic Sensors for Coal Mine Hazard Detection 5 Fig. 3 NIR absorption spectrum of methane gas S.T/D S.T 0/ Q.T 0/ Q.T/ exp hcEn i k 1 T 1 T 0 2 4 1 exp hc 0. kT 1 exp hc. kT 0 3 5 (3) S(T) can be characterized empirically for the operational temperature range using linear or polynomial fitting.
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