which sensor used for coal mines

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  • Web of Things-Based Remote Monitoring System for Coal Mine ...

    Frequent accidents have occurred in coal mine enterprises; therefore, raising the technological level of coal mine safety monitoring systems is an urgent problem. Wireless sensor networks (WSN), as a new field of research, have broad application prospects. This paper proposes a Web of Things- (WoT-) based remote monitoring system that takes full advantage of wireless sensor networks in ...

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  • IOT Based Coal Mine Safety Monitoring and Alerting System

    The disasters happening in coal mine are due to the complexity of mine environment and the variety of work carried out in coal mine, so it is very necessary to monitor the working environment of coal mine. To get over this problem, Nevon projects has proposed a wireless sensor network's application in coal mining safety system.

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  • An Integrated Environment Monitoring System for ...

    requirements of comprehensively monitoring the coal mine, which has characteristics of regional dispersion and small relevance with individual WSN. Based on these considerations, an integrated environment monitoring system for underground coal mines is constructed, which can comprehensively monitor the coal mine environment.

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  • Coal Mine Robot (project report) - SlideShare

    Nov 07, 2013 · Coal Mine Robot (project report) ... Figure 2.4: M40.M precision Gas sensor for coal mines BACHELOR OF ELECTRICAL AND ELECTRONIC ENGINEERING UNIVERSITY OF BRADFORD 21 22. COAL MINING ROBOT, 2013 MUHSIN ABDUL MOHAMMED 2.5.3 Semiconductor Type Gas Sensors The gas sensor used in this project is based on semiconductors; the specific sensor .

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  • Final Rule on Proximity Detection Systems for Continuous ...

    Mar 16, 2018 · The rule requires operators of underground coal mines to equip place-changing continuous mining machines with proximity detection systems, which use electronic sensors on both mining machines and miners to detect motion or the location of one object relative to another. Certain operational standards must be met.

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  • Fibre optic sensors for coal mine hazard detection ...

    Currently Black-white methane sensors are dominant in use by the coal mine industry due to low cost. Laser and infrared methane sensors have been gradually accepted by the industry. However, the fibre optic sensors are still in early days for field application, mainly due to lack of industrial standard.

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  • Design and Development of Coal Mine Safety System using IoT

    underground physical sensor devices used in mines. To implement this an Open Service Gateway initiative (OSGi)-based uniform devices are used in wireless sensor network. To evaluate the performance of proposed system a prototype model is developed and the results are analysed. Index Terms: Coal mine safety, Control automation, IoT, WSN.

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  • Ultrasonic sensing in coal mines - ScienceDirect

    ULTRASONIC SENSING IN COAL MINES Automation underground is no longer hindered by lack of a reliable sensing system. Ultrasonic sensors can be used in coal mines to monitor the flow of coal from the moment it is cut at the face until it finally leaves the coalfield in railway wagons.

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  • Mining and Quarrying Industry - Hansford Sensors

    Within the coal, mining and quarrying industries, it is common for machinery to run 24/7, often under extreme environmental conditions, with high levels of dust, moisture and temperature, and in areas where access for maintenance or repair is difficult.

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  • Underground Coal Mine Monitoring with Wireless Sensor .

    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.

    • Published in: ACM Transactions on Sensor Networks · 2009Authors: Mo Li · Yunhao LiuAffiliation: Hong Kong University of Science and TechnologyAbout: Coal mining · Wireless sensor network · Data collectionGet Price
    • Final Rule on Proximity Detection Systems for Continuous ...

      Mar 16, 2018 · The rule requires operators of underground coal mines to equip place-changing continuous mining machines with proximity detection systems, which use electronic sensors on both mining machines and miners to detect motion or the location of one object relative to another. Certain operational standards must be met.

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    • ―Microcontroller Based Smart Helmet for Coal Miners Safety‖

      collision detection in mining area and RF module used for information transfer to reduce safety problems in coal mining area for this purpose we develop smart helmet. All these parameters are detected continuously by gas sensor, collision sensor, and helmet remover sensor and if they cross the pre-defined limit, then the

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    • Fibre Optic Sensors for Coal Mine Hazard Detection ...

      Aug 13, 2018 · Fibre optic Raman scatter-based distributed temperature sensor (DTS) (Dakin 1989) is increasingly used for coal mine goaf combustion monitoring. The length of the coal mine long wall workface is normally less than 6 km, hence mode fibre cables can be used.

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    • Design Of Underground Coal Mine Monitoring System - .

      coal mines, MQ-7 gas sensor is used. Figure 6- Structure & configuration of MQ-7 Sensor composed by micro AL2O3 ceramic tube, Tin Dioxide (SnO2) sensitive layer, measuring electrode and heater are fixed into a crust made by plastic and stainless steel net. The heater provides necessary work conditions for work of sensitive components.

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    • Your very own canary for the wireless coal mine: Cape's ...

      Your very own canary for the wireless coal mine: Cape's new Wi-Fi monitor. ... and $300 for each additional sensor used. Cape is taking orders on its website as of right now, ...

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    • EVALUATION OF SMOKE AND GAS SENSOR RESPONSES FOR .

      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. The manufacturer claims that it is reliable, efficient, and able to withstand harsh conditions in underground mines.

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    • Design Of Underground Coal Mine Monitoring System - .

      coal mines, MQ-7 gas sensor is used. Figure 6- Structure & configuration of MQ-7 Sensor composed by micro AL2O3 ceramic tube, Tin Dioxide (SnO2) sensitive layer, measuring electrode and heater are fixed into a crust made by plastic and stainless steel net. The heater provides necessary work conditions for work of sensitive components.

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    • Why Do Coal Mines Explode? | Live Science

      Ventilation is the most common method to avoid such methane explosions in coal mines. Large fans are used to blow air out or draw air into mines, but Luo stated that mine ventilation is still a ...

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    • Gas Sensing Technology Improves Mine Safety

      City sensors are to be found in detection equipment used in the world's main coal mining regions. The top four regions are China, which in 2011 accounted for just under 50% of world coal production, the USA with a 14% share, India which accounts for 6% and Europe, 4%.

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    • Underground mining equipment proximity detection systems ...

      Aug 20, 2010 · Currently, for example, the West ia Mine Safety Technology Task Force is pushing legislation to make proximity detection systems a part of underground coal mining systems. One piece of equipment that has received particular attention is the continuous mining machine, which is used in underground coal and nonmetal mines.

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    • How to set the alarm value of coal mine wind speed sensor ...

      Jan 19, 2019 · The coal mine industry needs to use the wind speed sensor because the environment of the underground coal mine is very sad and completely closed. If it is not ventilated in time, then the safety of the workers in the covert operation is a problem, so the wind speed sensor is used.

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    • Volume 4, Issue 9, March 2015 Intelligent safety system ...

      temperature sensors outputs, LDR, control button and RF receiver. Output pins of the controller are connected to LCD display and ZigBee module as shown in the fig.1. MQ-3 is the gas sensor used which has the sensitive material SnO2. Humidity sensor is HS1101LF. LM35 is used as the Intelligent safety system for coal miners

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    • Web of Things-Based Remote Monitoring System for Coal Mine ...

      Frequent accidents have occurred in coal mine enterprises; therefore, raising the technological level of coal mine safety monitoring systems is an urgent problem. Wireless sensor networks (WSN), as a new field of research, have broad application prospects. This paper proposes a Web of Things- (WoT-) based remote monitoring system that takes full advantage of wireless sensor networks in ...

      [PDF]Get Price
    • Mine fire detector - Health and Safety Executive

      coal mines (Walsh & Hunneyball, 2002; Hemingway & Walsh, 2005; Hemingway et al, 2007). For fire alarms to be effective they should be able to detect fires during the early combustion stages ie smouldering. Two types of detector are used in UK coal mines: • Semiconductor gas sensor (FIDESCO) for products of combustion, based on

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    • Volume 4, Issue 9, March 2015 Intelligent safety system ...

      temperature sensors outputs, LDR, control button and RF receiver. Output pins of the controller are connected to LCD display and ZigBee module as shown in the fig.1. MQ-3 is the gas sensor used which has the sensitive material SnO2. Humidity sensor is HS1101LF. LM35 is used as the Intelligent safety system for coal miners

      Get Price
    • The latest coal news & leading coal magazine | World Coal

      The latest coal news, industry trends and events from World Coal magazine, including mining, handling, coal bed methane and special reports.

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    • A Wireless LAN and Voice Information System for ...

      Sensors & Transducers, Vol. 172, Issue 6, June 2014, pp. 51-60 52 1.2. Existing Technology The peculiar nature of space and environment restricts the development of the wireless communication system for underground coal mine. So far, there is still not a kind of wireless communication system for coal mine with full-function.

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    • MSHA - Compliance Guide for MSHA's Regulations on Diesel ...

      All part 36 equipment used in underground coal mines already meets this requirement, so no retrofit or other action by the mine operator is needed. Paragraph (b)(2) requires existing part 36 equipment to be provided with a manual or automatic fire suppression system .

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    • Coal mining - Wikipedia

      Coal mining is the process of extracting coal from the ground. Coal is valued for its energy content and since the 1880s, has been widely used to generate electricity. Steel and cement industries use coal as a fuel for extraction of iron from iron ore and for cement production.

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    • Toxic Gas Sensors Replace Canaries and Mice in Mines | DigiKey

      Toxic Gas Sensors Replace Canaries and Mice in Mines ... Today's coal miners rely on carbon monoxide detectors and monitors to recognize its presence underground. However, before the availability of modern detection devices, miners turned to Mother Nature for assistance. ... It should be noted that all sensors used in the mining industry must ...

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