Opening Hours : Providing solution design within 24 hours
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.
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.Get Price
Communication. In recent years, it is widely used in the fields of our lives, scientific research, military, intelligent traffic, environmental monitoring, intelligent weapon, and so on. Compared to the traditional mine monitoring, we use wireless sensor networks in coal mine safety monitoring. It has three significant advantages:[PDF]Get Price
conducted in mines testing the use of the DDS technology. Both of the mines in this study used monitoring systems for fire detection in belt entries. Neither mine used diesel face equipment for coal haulage, but each used diesel scoops at the face and other support equipment in the intake haulageway.[PDF]Get Price
Other sensors with analogue outputs, i.e. Air velocity sensors or smoke detectors A unique feature of the SENSOR is the modular design and subsequent ease of repair and calibration: During failure of the sensor, only the sensor unit can be removed from the main controller without opening the main enclosure and replaced with a new sensor.Get Price
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 .[PDF]Get Price
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.Get Price
Portable gas detection devices are primarily used by mining personnel for routine inspections and personal monitoring while underground. A variety of multi sensor models are available for use by coal mines, but commonly measure the same gases as those .
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.Get Price
Apr 30, 2018 · The NIOSH Mining Program is working to improve the ability to detect and respond to developing fires using a multi-faceted approach that involves atmospheric monitoring of targeted mine locations. This approach seeks to (1) improve the gas and smoke sensors used in an atmospheric monitoring system (AMS) for fire detection and hazard analysis; (2) upgrade mine ventilation .[PDF]Get Price
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 .[PDF]Get Price
High resistance to RH is an essential for sensors which used in coal mines. Humidifying in our study achieved by a mixture of dry air with humid air which controlled by the manual regulator ...Get Price
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.Get Price
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 multimode fibre cables can be used.Get Price
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[PDF]Get Price
Oct 26, 2016 · Deep underground, smartphones can save miners' lives ... key minerals such as coal for energy and rare-earth metals for use in ... sensors and smartphones used in mines .[PDF]Get Price
Coal mining became a large-scale industry from the 18 th century to 1950s. With coal being the main energy source, the low cost and low abundance of this material made coal mining important for the growth of the economic industry. Despite a shift in the use of energy source from coal to ...
MSHA's proposed rule on proximity detection systems for mobile machines would strengthen protections for miners on the working section of underground coal mines by reducing the potential for pinning, crushing, or striking accidents.[PDF]Get Price
Hazardous Gas Detecting Rescue Robot in Coal Mines 70 food and first aid kit to the workers trapped inside. A biped robot was initially tipped to be used in the coal mines  which can move inside the tunnel interfacing with RS 232 cable. The robot couldn't travel a long distance it .[PDF]Get Price
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.Get Price
The latest coal news, industry trends and events from World Coal magazine, including mining, handling, coal bed methane and special reports.[PDF]Get Price