temperature sensors in coal mines

20
Dec

INTERNATIONAL JOURNAL OF PROFESSIONAL …

INTERNATIONAL JOURNAL OF PROFESSIONAL ENGINEERING STUDIES Volume II/Issue 1/JAN2014 IJPRES 1 A Coal Mine Safety System using Wireless Sensor Network Vijaya Kumari Doddi 1, N.Anuradha 2 1M.Tech Student, Dept of ECE, Nova College of Engineering & Technology for ... Temperature Sensor - The LM35

20
Dec

Development of Coalmine Safety System Using Wireless ...

system for coal mine safety based on Zigbee wireless sensor network. The underground system collects temperature, humidity and methane values of coal mine through sensor nodes in the mine; it also collects the number of personnel inside the mine with the help of an IR sensor, and then transmits the data to information

20
Dec

Application of wireless sensor network for environmental ...

 · The wired communication systems used for environmental monitoring in underground coal mines have many limitations. The wireless sensor network is one of the alternatives that not only overcomes the limitations of the wired communication system but also monitors the status of underground mines in an effective manner.

20
Dec

Zig-Bee and Wi-Fi based Mine Safety Application

location. The receiver section receives the value of temperature, light intensity and gas sensor reading (ppm). The basic flow chart for operation of the embedded system is shown in figure 4. Figure 4: Flow chart for coal mine safety monitoring and control V. RESULTS AND DISCUSSION Section IV describes the working of the mine safety application.

20
Dec

Development and Utilisation of Fibre Optic-based ...

Optic-based Monitoring Systems for Underground Coal Mines, 14th Coal Operators' Conference, University of Wollongong, The ... has resulted in the production of various fibre-optic sensors such as temperature, strain, displacement, rotation, pressure, gas, liquid level, radiation and vibration sensors. The advantages of these sensors

20
Dec

Mobile Robot in Coal Mine Disaster Surveillance

help of this mobile robot, the loss due to coal mine disaster can be reduced and efficient rescue operation can be carried out. Key words - Coal mine, Disaster surveillance, Robot, Sensor I. INTRODUCTION Coal mine is a special type of mine which is dangerous in nature. Such mines …

20
Dec

Toxic Gas Sensors Replace Canaries and Mice in Mines

While sensors have replaced canaries and mice alerting workers when air quality conditions are dangerous, mines remain an extremely hazardous environment: in addition to harmful and explosive gases, particles that are a result of coal mining, for example, have resulted in miners developing black lung, aka pneumoconiosis. This occupational lung ...

20
Dec

Design Of Underground Coal Mine Monitoring System

of LPC2148 in mining section. Figure 7- MQ-7 Gas sensor circuit 3.3.2 Temperature Sensor In the proposed system thermistor is used as temperature sensor. The word thermistor is an acronym for thermal resistor, i.e., a temperature sensitive resistor. It is used to detect very small changes in temperature. The variation in

20
Dec

coal mine dust sensor - alibaba.com

Alibaba.com offers 82 coal mine dust sensor products. About 2% of these are sensors, 1% are other mining machines. A wide variety of coal mine dust sensor options are available to you, such as optical sensor, current sensor.

20
Dec

Coal Mine Sensor, Coal Mine Sensor Suppliers and ...

Alibaba.com offers 511 coal mine sensor products. About 34% of these are sensors, 11% are alarm, and 1% are tire gauges. A wide variety of coal mine sensor options are available to you, such as temperature sensor, position sensor, and speed sensor.

20
Dec

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

2012 Coal Operators' Conference The University of Wollongong 16 – 17 February 2012 241 HOT ENVIRONMENT- ESTIMATION OF THERMAL COMFORT IN DEEP UNDERGROUND MINES Shugang Wang1, Ting Ren2, Tengfei Zhang1, Yuntao Liang3 and Zhe Xu1 ABSTRACT: Underground mines are a special type of environment which requires significant attention since they directly relate to miners‟ …

20
Dec

Robot Based Wireless Monitoring and Safety System for ...

for coal mine safety based on MSP430. This system utilizes low power, cost effective microcontroller MSP430, a temperature sensor, humidity sensor, smoke detector, gas sensor for sensing the mine climate parameter and a wireless zigbee trans receiver for remote sending of data at central unit.

20
Dec

Study of Real-Time Dry Bulb and Relative Humidity Sensors ...

 · Abstract. 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.

20
Dec

High performance and low temperature coal mine gas sensor ...

Coal mine methane (CMM) which released generally during and after mining operations is the main reason for the explosion in coal mines 1,2.Coal mining is considered much more hazardous than hard ...

20
Dec

coal mine dust sensor - alibaba.com

Alibaba.com offers 82 coal mine dust sensor products. About 2% of these are sensors, 1% are other mining machines. A wide variety of coal mine dust sensor options are available to you, such as optical sensor, current sensor.

20
Dec

Development of Coalmine Safety System Using Wireless ...

system for coal mine safety based on Zigbee wireless sensor network. The underground system collects temperature, humidity and methane values of coal mine through sensor nodes in the mine; it also collects the number of personnel inside the mine with the help of an IR sensor, and then transmits the data to information

20
Dec

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.

20
Dec

IOT Based Coal Mine Safety Monitoring and Alerting System

This monitoring and alerting system is powered by Atmega328 microcontroller for master controller and 8051 micro controllers for slave controllers. 8051 micro controller consists of temperature sensor, water sensor, methane and carbon dioxide sensor and RF transmitter which collects temperature, humidity and methane values underground of coal mine.

20
Dec

Robot Based Wireless Monitoring and Safety System for ...

for coal mine safety based on MSP430. This system utilizes low power, cost effective microcontroller MSP430, a temperature sensor, humidity sensor, smoke detector, gas sensor for sensing the mine climate parameter and a wireless zigbee trans receiver for remote sending of data at central unit.

20
Dec

Optical Sensor Monitoring and Analysis Platform

such as coal mines ; OFS based monitoring network is capable to ... sensor installed in an underground coal mine. Temperature sensor Fiber optic Methane sensor Zibo Black-Ling Coal Mine Demonstration Project. 31 Recorded seismic wave signal Zibo Black-Ling Coal Mine Demonstration Project. 32 Zibo Black-Ling Coal Mine