Architecture of Wireless Multimedia Mesh Network Nodes for Longwall Coal Mine Automation

2010 ◽  
Author(s):  
Xiaolong Feng ◽  
Jiansheng Qian
Keyword(s):  
Coal Mine ◽  
Mesh Network ◽  
Wireless Multimedia ◽  
Network Nodes ◽  
Mine Automation

COORDINATED DISTRIBUTED SCHEDULING IN WIRELESS MESH NETWORK

2012 ◽  
Vol 3 (3) ◽  
pp. 368-374
Author(s):  
Usha Kumari ◽  
Udai Shankar
Keyword(s):  
Network Performance ◽  
Mesh Networks ◽  
Mac Protocol ◽  
Scheduling Algorithm ◽  
Ieee 802.16 ◽  
Distributed Scheduling ◽  
Mesh Network ◽  
Fourth Generation ◽  
Network Nodes ◽  
Wireless Mesh

IEEE 802.16 based wireless mesh networks (WMNs) are a promising broadband access solution to support flexibility, cost effectiveness and fast deployment of the fourth generation infrastructure based wireless networks. Reducing the time for channel establishment is critical for low latency/interactive Applications. According to IEEE 802.16 MAC protocol, there are three scheduling algorithms for assigning TDMA slots to each network node: centralized and distributed the distributed is further divided into two operational modes coordinated distributed and uncoordinated distributed. In coordinated distributed scheduling algorithm, network nodes have to transmit scheduling message in order to inform other nodes about their transfer schedule. In this paper a new approach is proposed to improve coordinated distributed scheduling efficiency in IEEE 802.16 mesh mode, with respect to three parameter Throughput, Average end to end delay and Normalized Overhead. For evaluating the proposed networks efficiency, several extensive simulations are performed in various network configurations and the most important system parameters which affect the network performance are analyzed

Design of Coal Mine Belt Conveyor Control System Based on OPC Technology

2014 ◽  
Vol 614 ◽  
pp. 191-194 ◽  
Author(s):  
Lei Yu ◽  
Feng Wang ◽  
Xu Long Zhang
Keyword(s):  
Control System ◽  
Coal Mine ◽  
Belt Conveyor ◽  
Analysis And Design ◽  
Industry Standard ◽  
Opc Client ◽  
Opc Technology ◽  
Mine Automation ◽  
Actual Operation ◽  
Automation Control

OPC has been widely applied to coal mine automation control system as an industry standard of communication between the field control substation and PC in the control system. In this paper, through the analysis and design for the transport system of coal mine belt conveyor, communication between the PC and S7-300 PLC is realized by using OPC technology. This paper gives the configuration scheme of OPC Server and develops the OPC Client program. The actual operation shows that the system is stable, reliable of communication and high of data real-time.

scholarly journals An emergency rescue communication system and environmental monitoring subsystem for underground coal mine based on wireless mesh network

2018 ◽  
Vol 14 (10) ◽  
pp. 155014771880593 ◽  
Author(s):  
Haojiang Zhao ◽  
Wei Yang
Keyword(s):  
Environmental Monitoring ◽  
Coal Mine ◽  
Communication System ◽  
Wireless Mesh Network ◽  
Environmental Parameters ◽  
Mesh Network ◽  
Underground Coal Mine ◽  
Emergency Rescue ◽  
Wireless Mesh ◽  
Safety Features

According to the characteristics of the underground coal mine roadway structure and disaster environment, this article proposes an underground emergency rescue communication system based on wireless mesh network and its corresponding environmental monitoring subsystem. We design the structures of the emergency rescue communication system and the wireless mesh nodes. The nodes are designed with intrinsic safety features. The work also develops wireless multi-parameter environmental monitoring terminals, and sets up the software platform for the environmental monitoring subsystem. The developed underground coal mine emergency rescue communication system based on wireless mesh network and environmental monitoring subsystem are tested both on the ground and in a real underground roadway environment. Experimental results from the testing show that the signal strength is -45 dBm on average, and the bandwidth attenuation of each hop is less than 10%, the transmission delay after the 11th hop is only 14 ms. The developed emergency rescue communication system is functionally stable, the environmental monitoring subsystem is capable of performing real-time monitoring of various underground environmental parameters, and achieves high accuracy in monitoring.

Game Theory-Based QoS Routing Approach in Wireless Multimedia Sensors Network for Coal Mine

2012 ◽  
Vol 6 (20) ◽  
pp. 529-536 ◽  
Author(s):  
Renke Sun ◽  
Enjie Ding ◽  
Haifeng Jiang ◽  
Runtong Geng ◽  
Wei Chen
Keyword(s):  
Game Theory ◽  
Coal Mine ◽  
Qos Routing ◽  
Wireless Multimedia

Cooperative Caching in Wireless Multimedia Sensor Networks

2019 ◽  
pp. 326-346
Author(s):  
Pushpender Kumar Dhiman ◽  
Narottam Chand ◽  
Naveen Chauhan ◽  
Rajeev Kumar
Keyword(s):  
Wireless Sensor Network ◽  
Sensor Networks ◽  
Response Time ◽  
Wireless Sensor ◽  
Wireless Multimedia ◽  
Network Nodes ◽  
Scarce Resources ◽  
Access Latency ◽  
Multimedia Sensor Networks ◽  
Wireless Environment

Caching is a technique that transparently stores data nearer to the requester so that future requests for that data can be served faster. In networking environment, caching is a method of storing data in multiple places on the network, typically to reduce response time and network traffic. In wireless environment, through caching we can improve the efficiency. Caching can be utilized to improve the efficiency by storing the data nearer to the requester. Data are stored nearer to the requester, so it will reduce the access latency and bandwidth usage to transmit data to the requester, and reduce the overall cost of accessing data. Wireless environment is infrastructure-less so all nodes directly communicate with their neighbors. In wireless sensor network, nodes have limited resources such as battery, communication bandwidth, storage, etc. Through caching we can reduce the overall cost of accessing data and conserve the scarce resources.

Research on Mine Monitoring Technology Based on Internet of Things

2013 ◽  
Vol 321-324 ◽  
pp. 767-770 ◽  
Author(s):  
Yan Jun Qi
Keyword(s):  
Internet Of Things ◽  
Coal Mine ◽  
Measurement Data ◽  
Mine Safety ◽  
Sensor Technology ◽  
Network Nodes ◽  
Physical Conditions ◽  
Coal Mine Safety ◽  
The Status ◽  
Safety Production

In order to find out the status of unmanned area and staff position in mine, the important content for intelligent mine is the detection and location of personnel underground. Analyze the architecture of location system and location principle based on Internet of Things (IoTs) along with ZigBee wireless networks and pyroelectric sensor technology. In the meantime, Install test wireless network nodes and achieve measurement data. The results show that this technique is suitable for the worse physical conditions in mine, lower in cost, higher accuracy in location and detection. The scheme can greatly improve the level of coal mine safety production and reduce the occurrence of catastrophes and casualties.

Optimizing Wireless LAN for Longwall Coal Mine Automation

2007 ◽  
Vol 43 (1) ◽  
pp. 111-117 ◽  
Author(s):  
Chad O. Hargrave ◽  
Jonathon C. Ralston ◽  
David W. Hainsworth
Keyword(s):  
Coal Mine ◽  
Wireless Lan ◽  
Mine Automation
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