Wireless Communication in Underground Mines RFID-based Sensor Networking
:
L. K. Bandyopadhyay, S. K. Chaulya, P. K. Mishra
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Wireless Communication in Underground Mines RFID-based Sensor Networking
:
Springer-Verlag
:
9780387981659
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1
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CHF 96.60
:
:
Elektronik, Elektrotechnik, Nachrichtentechnik
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English
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477
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Wasserzeichen
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PC/MAC/eReader/Tablet
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PDF
Wireless communication has emerged as an independent discipline in the past decades. Everything from cellular voice telephony to wireless data transmission using wireless sensor networks has profoundly impacted the safety, production, and productivity of industries and our lifestyle as well. After a decade of exponential growth, the wireless industry is one of the largest industries in the world. Therefore, it would be an injustice if the wireless communication is not explored for mining industry. Underground mines, which are characterized by their tough working conditions and hazardous environments, require fool-proof mine-wide communication systems for smooth functioning of mine workings and ensuring better safety. Proper and re- able communication systems not only save the machine breakdown time but also help in immediate passing of messages from the vicinity of underground working area to the surface for day-to-day normal mining operations as well as for speedy rescue operations in case of disaster. Therefore, a reliable and effective commu- cation system is an essential requisite for safe working, and maintaining requisite production and productivity of underground mines. Most of the existing systems generally available in underground mines are based on line (wired) communication principle, hence these are unable to withstand in the disaster conditions and dif?cult to deploy in inaccessible places. Therefore, wireless communication is an indispe- able, reliable, and convenient system and essential in case of day-to-day normal duty or disaster situations.
Preface
5
Acknowledgment
9
Contents
11
Abbreviations
19
Symbols
23
About the Authors
25
Mine Communication Technique
28
1.1 Introduction
28
1.2 Wired Communication Services
29
1.3 Semi-wireless Communication System
37
1.4 Through-the-Earth Communication System
41
1.5 Wireless Communication Services
50
1.6 Rescue Systems for Disaster Management
72
1.7 Conclusions
77
References
82
Evaluation of Suitable Frequency
92
2.1 Introduction
92
2.2 Wave Propagation Through Medium
93
2.3 Laboratory Experiment
94
2.4 Results and Discussion
97
2.5 Conclusions
97
References
98
Trapped Miner Communication
99
3.1 Introduction
99
3.2 System Description
99
3.3 Transmitter Unit
100
3.4 Receiver Unit
103
3.5 Technical Description
106
3.6 Safety Analysis
108
3.7 Component Details
111
3.8 Capabilities of the System
113
3.9 Field Trial
114
3.10 Conclusions
115
References
115
Shaft Communication
117
4.1 Introduction
117
4.2 Theory
117
4.3 Principle
121
4.4 System Description
121
4.5 Technical Details
125
4.6 Field Installation Procedure
126
4.7 Laboratory and Field Trials
127
4.8 Capabilities of the System
129
4.9 Conclusions
130
References
130
Line-of-Sight Communication
131
5.1 Introduction
131
5.2 Propagation of UHF RadioWaves in Coal Mine Tunnels
131
5.3 Expected Communication Range in a Mine and Propagation Loss
139
5.4 System Description
140
5.5 Circuit Diagram
141
5.6 Specification
142
5.7 Field Trial
143
5.8 Capabilities
144
5.9 Conclusions
145
References
145
Mine-Wide Communication
147
6.1 Introduction
147
6.2 The System
148
