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At present, coal mine operations as far away from the ground, difficult terrain,
poor environment, so prone to accidents. Use of remote video monitoring system,
ground control personnel can be directly carried out on the underground
real-time monitoring, not only can directly monitor and record the underground
work site safety in production, but also to detect incidents Miaozi, prevention,
but also for the hindsight The accident to provide first-hand information image.
So remote video surveillance system is a modern coal mine production safety
monitoring system an important component part.
Currently, some coal use
video surveillance systems are analog control early, performance and stability
is not high. Now with the Internet technology and the development of computer
technology, based on the TCP / IP protocol IP network applications is widely
popular. The high-speed broadband network built in high-speed access and the
rapid development of the system, and promote a variety of IP-based video
communications applications such as remote video surveillance network system
development. So in coal mine safety monitoring system in the introduction of
modern network remote video monitoring system will be a trend.
Second,
the system edge
Most coal companies have built a closed-circuit television
monitoring system, using the analog video signal, and it is very limited: First
of all, cable analog video signal from the transmission of sensitive, when the
transmission distance is greater than 1,000 meters, the signal Easily lead to
attenuation, distortion, the group delayed, and vulnerable to interference, the
decline in image quality, when the underground complex for the work of the
scene, not performing well; Second, the cable network can not be simulated video
surveillance, can only point to point Monitoring the way the scene and makes
wiring works of great and not easy to maintain and upgrade the system; Finally,
cable analog video signal data storage will be a significant amount of storage
medium (such as video), for evidence at the very cumbersome.
"SIKE" network
video surveillance system is to overcome the advantages of a closed-circuit
television monitoring of the limitations of simulation: First of all, digital
video can be in the computer network (LAN or WAN) on the image data
transmission, is essentially unregulated distance constraints, vulnerable to
signal interference, Can substantially improve image quality and stability;
Second, digital video can use the computer network interconnection, network
bandwidth reusable, do not have to repeat cabling; addition, the digital storage
possible, compressed video data can be stored on the disk array Or stored on
CD-ROM, for a very simple and efficient.
In addition, "SIKE" network video
surveillance system to provide data interface, the weighing of the coal
transport links, through scientific means of data collection, data and video
data weight combination of intuitive reality of the actual data for coal trucks.
Third, the system components
According to this site conditions, we
have adopted SK series network video and audio monitoring system, the system
based on embedded Web server, the system uses VXWORKS operating system, safe and
reliable, better network video transmission. In the external environment, the
overall situation in the mine are to build an optical fiber transmission medium
for the Gigabit Ethernet LAN, voice and video can achieve the rapid
transmission, which is embedded Web server-based network video surveillance
application provides a good The conditions.
In addition, the mine also want
to put video surveillance images in this transmission on the LAN Mine, Mine such
leadership, control room, and other security branches in the office at any time
via the computer can understand the work site and equipment operation.
4, monitoring front-end
Underground cameras BNC video output
to connect to the network through video and audio server, and then through the
RJ45 connectors will depend audio server connected to the network, and then to
set up a video and audio server IP address, you can rely on the existing LAN
quickly, and in any local area network Local, authorized users can use the
browser to view the work underground.
SK series of video and audio server
contains a built-in WEB server, which can enhance the performance of traditional
surveillance systems, and in a secure intranet or even released surveillance
images on the Internet has provided network connectivity. Video cameras
management, configuration and monitoring - all of them are only in your
fingertips through the standard WEB Microsoft IE browser to complete. SK Series
audio and video server network monitoring software is an easy to install and
easy-to-use products, relatively low investment costs make it in strengthening
the monitoring system in a all-powerful role.
In addition, there can be
other mine safety monitoring equipment, such as: gas sensors, ventilation
detection equipment, alarm equipment, and other equipment through the auxiliary
input to connect to the network by Post as audio server.
5. Monitoring
Centre
Dispatch center from the main server monitoring, monitoring of
customer terminals. Completion of the main mine site to receive and display
images, users log management, the distribution of priority, the coordination of
control signals, images of real-time monitoring, video storage, retrieval,
playback, backup and recovery.
In the factory configured on a network server
monitoring, installation SK Series Monitoring Center server software, the center
of the front-end server substation camera, video server management, back-end for
all Internet users to manage, at the same time shoulder the video alarm, and
many other features. In the duty room to install a monitor to several clients,
monitor the user first landing monitoring server, enter the user name password,
access to the appropriate authority, that is able to access to the front of the
camera, but can also install a screen display at National Taiwan University (or
back Projectors, plasma displays, etc.), use of SK Series audio and video server
network monitoring system software for power, on the big screen can also show a
video camera 1/4/6/8/9/10/16 the screen. System can also be used in conventional
television display walls.
The system can mine, loadometer by the relevant
data, image monitoring and surveillance, so that real-time, direct understanding
and knowledge of the first mining area, and in a timely manner to respond.
Monitoring powerful server, while dozens of management systems and dozens of
mines or even hundreds of online users in the mining area after the expansion,
the dispatch center without additional hardware input system capable of dozens
of video images of activities at the same time Reception, meet all the
transponders for online customers; system is perfect video services: artificial
video, video and alarm scheme video, storage, retrieval, backup and restore a
large number of image database; has a great video playback capability, users can
Internet applications submitted independently to provide users with access and
video playback, I can respond to a large number of user applications; system
also has a sound mechanism for user authentication (user name, password,
front-end system password, priority) mechanism, a strong focal point Mechanism
(with the application, images transmitted, recording applications, with control
and coordination), the entire system is based on advanced software platform,
comply with the standards and direction of future development.
6,
control terminal
SK Series audio and video network servers using mature WEB
technology, the system provides users with a good human-computer interface, the
client browser access through the system. On the network of any one PC / laptop
computers as long as the installation of the SK series of video and audio
monitoring system network client image control, to become a fully functional
monitoring customer terminal. Customers can go see the need for on-site
loadometer images and data. Multi-screen system can display images at the scene,
and can arbitrarily control the camera. For loadometer data systems while curve,
columns and tables, and other forms of visual performance, if necessary also by
the front of the computer and staff dialogue.
With the TCP / IP in all
areas of technology development and applications, IP-based Web server technology
embedded video surveillance system will in coal mine production safety
monitoring on to be more widely applied, and will affect the entire mine safety
monitoring system Direction of development.
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