IoT BASED MINE SAFETY SYSTEM USING WIRELESS

[1] VALDO HENRIQUES AND REZA ALEKIAN,"Mine safety system using wireless sensor network", IEEE Trans. Ind. Appl.,date of publication June 16, 2016 [2] Muzaffer Kanaan and Eda Simsek,"On the use of zigbee technology for coal mine safety",IEEE Trans Ind.,published in 2016 24th signal processing and communication application conference.

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Smart Materials and Structures TECHNICAL NOTE Related

2.1. FBG sensor The proposed load measuring anchor plate is a normal anchor plate instrumented with FBG strain sensor. In order to measure the load of an anchor plate for a rock bolt, a 2mm deep v-shaped groove was cut on the inner surface along a length of the plate, and an FBG was installed into the center of

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Feasibility Study on Temperature Distribution Measurement

of the temperature measuring cable for coal mine. In order to meet the demand of the sliding thrust bearing temperature distribution measurement, the sliding thrust bearing surface temperature measurement problem has been studied by using FBG temperature sensors, and the key problems such as the calibration, arrangement and

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CN102720515AFiber bragg grating prestress measurement

The invention relates to a fiber bragg grating prestress measurement anchor rod and an application method thereof. The fiber bragg grating prestress measurement anchor rod comprises an anchor rod body, a tray and a nut, wherein a test interface is arranged on a tip of an end, which is provided with the nut, of the anchor rod body, a longitudinal groove which penetrates through the whole rod

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The monitoring system of the pipeline safety of the coal

Oct 15, 2013 · 15 October 2013 The monitoring system of the pipeline safety of the coal mine gas drainage based on the optic fiber sensing technology. Application of the fiber Bragg grating (FBG) sensors in coal Proceedings of SPIE (October 14 2013) Fiber optic sensor-based intelligent coal mines Proceedings of SPIE (October 31 2007)

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A Fiber Bragg Grating-Based Monitoring System for Roof

Oct 21, 2016 · This is expected to further enable the prevention of catastrophic roof collapse accidents. The system has been successfully implemented at a deep hazardous roadway in Zhuji Coal Mine, China. Monitoring results from the study site have demonstrated the advantages of FBG-based sensors over traditional monitoring approaches.

Feasibility Study on Temperature Distribution Measurement

of the temperature measuring cable for coal mine. In order to meet the demand of the sliding thrust bearing temperature distribution measurement, the sliding thrust bearing surface temperature measurement problem has been studied by using FBG temperature sensors, and the key problems such as the calibration, arrangement and

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(PDF) Application of a FBG-Based Instrumented Rock Bolt in

Rock bolts have been widely applied with roadway excavation in underground coal mines to prevent roadway collapse and improve the stability of roadway surrounding rocks. Overloadi

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Application of SnO Nanoparticles and Zeolites in Coal Mine

the step-by-step construction of the sensors and the system used to test them, including GC analysis of the gas in all the tests. Additionally, we analyze the performance of a zeolite 13X filter, placed in front of the sensor, in terms of CH 4 selectivity in a simulated coal mine atmosphere. 2.

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A Fiber Bragg Grating-Based Monitoring System for Roof

sensors Article A Fiber Bragg Grating-Based Monitoring System for Roof Safety Control in Underground Coal Mining Yiming Zhao 1,*, Nong Zhang 1 and Guangyao Si 2 1 Key Laboratory of Deep Coal Resource Mining of the Ministry of Education, School of Mines, China University of Mining and Technology, Xuzhou 221116, China [email protected]

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CN102720515AFiber bragg grating prestress measurement

The invention relates to a fiber bragg grating prestress measurement anchor rod and an application method thereof. The fiber bragg grating prestress measurement anchor rod comprises an anchor rod body, a tray and a nut, wherein a test interface is arranged on a tip of an end, which is provided with the nut, of the anchor rod body, a longitudinal groove which penetrates through the whole rod

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Evolution of Gas Sensors in the Mining Industry

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

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Simultaneous monitoring of temperature, pressure, and

Simultaneous monitoring of temperature, pressure, and strain through Brillouin sensors and a hybrid BOTDA/FBG for disasters detection systems. Access Full Text. Simultaneous monitoring of temperature, pressure, and strain through Brillouin sensors and a hybrid BOTDA/FBG for disasters detection systems

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Fiber Bragg grating (FBG) sensors used in coal mines (pdf

The results show the FBG sensors can be used in coal mines for coal mines safety. 2. FBG stress sensor applied in the coal mine It is known that the reflective wavelength of the Bragg grating changes with the change in the strain or temperature of the environment [5].

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Applied Sciences Special Issue Fiber Bragg Gratings

Structural health monitoring is of great importance for the application of composites in aircrafts. Fiber Bragg grating (FBG) sensors are very suitable for structure strain measurement. However, the strain measured by FBG sensors is different from the original strain in host materials. The relationship between them is defined as strain transfer.

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Application of a FBG-Based Instrumented Rock Bolt in a TBM

This work proposed a FBG-based instrumented rock bolt. Quasi-distributed FBG sensors were installed on a slotted rock bolt and encapsulated by epoxy resin that was used to fix FBG sensors on the rock bolt and protect FBG sensors from damage. The FBG sensors were calibrated before the in situ application.

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FBG Sensoroptics

FBG Sensor 14 Dec 2012. The Bragg wavelength is sensitive to temperature and strain. This means that the FBGs can be used as sensing elements in optical sensors. This type of Fiber Bragg Grating is specially designed with narrow reflective bandwidth to allow for easy detection of

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Coal Mine Disaster Rescue Life Sign Monitoring Technology

This is a qualitative measure application of FBG sensor. The FBG neednt be calibrated to 'be used in heart rate detection. The FBG center wavelength of heart rate sensor is 1555nm. 3.3. The detection of posture The posture detection is very important to the rescue staffs who work in the special environment. The road of coal mine is uneven.

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Interferometric Fiber-Optic Electric Current Sensor for

The interferometric electric current fiber-optic sensor for application in industry is presented. The modified spun fiber is used for sensitive fiber coil of sensor. The sensor has accuracy of 0.5% at temperature range from -40°C to 60°C without necessity of additional temperature compensation. The range of measured current is 15250 kA.

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Fibre Optic Sensors for Coal Mine Hazard Detection

Aug 13, 2018 · Methane gas and coal combustion have been recognized by the coal mine industry as two major hazards, which resulted in most of the heavy casualties and economic losses. Conventional catalytic methane gas sensors suffer from poor accuracy and cumbersome maintenance, which is the bottleneck of methane hazard prevention.

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A coal mine security monitoring system based on

A coal mine security monitoring system based on multiplexed fibre bragg grating sensors and coherence-multiplexing technique Abstract An FBG sensing system for coal mine security monitoring is proposed in this paper.

Authors Tianhao Xia · Bin Zhou · Weisheng Liu · Zuguang GuanAffiliation Zhejiang UniversityAbout Temperature measurement · Fibre optic sensors · Effective refractive index · Conditio
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Fibre optic sensors for mine hazard detection

et al [1] has created lots of interest for coal mine applications. Field trials of DFB laser diode based fibre optic sensors were reported [2]. Conventional coal mine roof condition monitoring is carried out using strain gauge array surface mounted on a steel bar, which tends to drift and typically on manual survey to take the data reading.

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Fiber Bragg grating (FBG) sensors used in coal mines (pdf

The results show the FBG sensors can be used in coal mines for coal mines safety. 2. FBG stress sensor applied in the coal mine It is known that the reflective wavelength of the Bragg grating changes with the change in the strain or temperature of the environment [5].

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fbg sensor for coal mind application

et al [1] has created lots of interest for coal mine applications. Field trials of DFB laser diode based fibre optic sensors were reported [2]. Conventional coal mine roof condition monitoring is carried out using strain gauge array surface mounted on a steel bar, which tends to drift and typically on manual survey to take the data reading.

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Research on FBG-Based Sensor Networks and Their

optical sensor installation and deployment methods. For instance, there are applications evaluated [5] where FBG optical sensors are embedded in concrete to measure strain and monitor tracks. According to [6], topical research theme in a matter of SHM is also an underground coal mine moni-toring due to the occurring construction accidents. Further-

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Research on Coal Mine Safety Monitoring System Based on

Feb 21, 2018 · Research on Coal Mine Safety Monitoring System Based on Zigbee Wireless Sensor Network's Application in Coal Mine Safety Coal Mine Safety Monitoring System Research on Mine Safety Monitoring

Fiber Bragg grating (FBG) sensors used in coal mines (pdf

The results show the FBG sensors can be used in coal mines for coal mines safety. 2. FBG stress sensor applied in the coal mine It is known that the reflective wavelength of the Bragg grating changes with the change in the strain or temperature of the environment [5].

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BOTDRWhat does BOTDR stand for? The Free Dictionary

Looking for online definition of BOTDR or what BOTDR stands for? BOTDR is listed in the World's largest and most authoritative dictionary database of abbreviations and acronyms The Free Dictionary

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Fibre optic sensors for mine hazard detection

et al [1] has created lots of interest for coal mine applications. Field trials of DFB laser diode based fibre optic sensors were reported [2]. Conventional coal mine roof condition monitoring is carried out using strain gauge array surface mounted on a steel bar, which tends to drift and typically on manual survey to take the data reading.

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Fibre optic sensors for coal mine hazard detection

For coal mine engineering use, low-cost and robustness may be more critical than sensitivity. The fibre Bragg grating and cantilever type accelerometers exhibit good frequency response and cross-sensitivity hence were developed for coal mine applications . The schematic of the accelerometer is shown in Fig. 23. The FBG element experiences

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Articles about Fiber Bragg Gratings (FBG), Photonic and

FBG sensors are immune to electromagnetic interference and are resistant to harsh environments and corrosion. FBG sensors can be multiplexed this ability was originally developed for optical network applications, however, it can be exploited in order to create sensor geometries that are quasi-distributed. This technology can be used for real

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Fiber Optic Sensing Instruments ASE Light Sources FBGA

Applications. Biological Materials (FBG) sensor system strain or temperature measurements. They are now widely deployed in coal mine safety systems, oil/gas down hole drilling, electrical power grid monitoring systems, fire prevention systems, power plant monitoring systems, wind turbine monitoring, security/homeland defense systems

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Fiber Bragg grating sensors for bolt force status

Fiber Bragg grating sensors for bolt force status monitoring real-time monitoring of bolts in coal mine roadways is vital for the long-term safety and stability of the surrounding rock structures. The use of FBG sensors in engineering applications shows that fiber optic sensors can automatically acquire,

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FBG Interrogation AnalyzerBaySpec

Devices interrogate multiple wavelengths for precise FBG sensor-system strain or temperature measurements. They are now widely deployed in coal mine safety systems, oil and gas down-hole drilling, electrical power grid-monitoring systems, fire prevention systems, power plant monitoring systems, wind turbine monitoring, defense and homeland security systems, structural health

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IET Digital Library Simultaneous monitoring of

In this study, the authors deal with the problem of simultaneous measurement of temperature, pressure, and strain using novel technologies of optical fibre (OF) sensors. Indeed, they address the problem of early surveillance systems to detect disasters in real-time. Through these sensors, they try to predict prospective and possible disasters (landslides, fire, earthquake etc.).

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Journal of SensorsHindawi

Journal of Sensors is a peer-reviewed, Open Access journal that publishes original research and review articles related to all aspects of sensors, from their theory and design, to the applications

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fbg sensor for coal mind applicationboonstraelektronika

fbg sensor for coal mind applicationcrusherasia. fbg sensor for coal mind application fbg sensor for coal mind applicationExcavator Excavator is a self-traveling mining machine that using the bucket to spade and install stripping things or minerals . More Research on magnetic excitation model of

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Measurement of Temperature Distribution Based on Optical

The FBG sensor is mainly used in the safety monitoring system of coal mine. As shown in Figure 14, the FBG temperature sensor is fixed near the measuring point by binding and welding. Six FBG temperature sensors are mounted on the second layer of the vent of the mine shaft, and the real-time monitoring results of the sensor are shown in Figure

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