Expressway monitoring content mainly includes two parts, the expressway toll,
throughout the industry, often face under some questions:
Why should we established network monitor system?
China's highway startting evening, but develop faster. But because of each
province and the economic gap between the different provinces, the construction
of the expressway development are also different. But the video image, traffic
flow data real-time update and sharing of tubal branch is around get accepted,
especially in the region has been built, digital need more of a unified
monitoring network system to ensure that the data sharing and update.
All the participants monitor, monitor the monitoring data of the center of
province, upload the real-time data acquisition of the center of province
conducts a statistical analysis of the chart, with corresponding display of the
center of province, and can make the sub-centres monitoring system, variable
information board, variable speed-limit signs such as traffic control equipment,
induction HangLuZhe understand the latest information of road, managers can also
real-time monitoring of pavement condition, use the monitoring and unified.
2 freeway general remote, how to construct the monitoring system of safe
and reliable?
The highway is the link between city and its inherently large space span,
and maintenance cost is higher, the most typical is the interstate highways.
Based on the above characteristics, video surveillance equipment of highways
must have the following characteristics, namely, mature technology, stable
operation, safe and reliable, economical and high cost of informatization.
Digital video with market, demonstrated by decoding and Suggestions of
optical fiber transmission. In line of the highway, laying optical fiber
transmission video and reverse control signal. Optical fiber transmission
distance, signal attenuation, price and reduce the transmission distance for
economic, and once laid, can use, and the perennial effectively reduce
maintenance cost, and later on, and other systems and network monitoring system
and interworking have very big of.
3 how to realize the new and old system, different equipment compatibility
problem?
Current highway development process, the main priority in optical
transceiver matrix and digital simulation monitoring system monitoring system.
And every area of the system and other facilities are different, how to realize
the system expansion and higher in the networking system, we are currently
facing the realistic problems. Digital video to solve these problems specially
introduced advanced system solutions, can realize the old road convenience for
upgrading capacity in different periods, the product, and the unified
compatibility with other manufacturer can achieve mutual plait of equipment and
mutual solution. In the design of modular design concept, introducing the
concept of virtual layer, equipment manufacturers more smooth compatibility of
different types of products, the greatest degree of protection of investment,
the user is solved.
With the new road monitoring program each province built and the
reconstruction of the old road, a comprehensive complete reliable and practical
network monitoring systems become an inevitable choice. As the largest video
transmission field equipment suppliers and system solutions provider of digital
video, digital network monitoring deep understanding of network monitoring
system in chongqing, played a pivotal role in helping to achieve the partner of
video networking control area.
Highway network monitoring system for real-time video image is the road
and traffic data, road traffic accident case closed, and meteorological data,
the tunnel, the environmental data field equipment working condition, such as
construction of abnormal warning edit summary, real-time information via
communication network real-time monitoring center, the road to monitor and
control center, the provincial branch of the center of province of data
collection, analysis and processing in form for each field curve, the working
condition to equipment, and released by icon instruction give corresponding
control of variable monitoring system, branch, variable speed-limit intelligence
signs such as traffic control equipment, induction HangLuZhe convenient traffic,
enable managers to understand the latest can monitor real-time traffic
information, to use the monitoring and unified.
A business network monitoring system, and the solutions.
Digital video surveillance system of digital network as the forerunner,
rely on strong technical development strength, targeted traffic industry to
develop the second generation digital video surveillance system, network
business network monitoring system solutions, integrated data collection,
analysis, and judgment, event system video sync switching and storage of linkage
scheme, have unified management planning ideas, centralized monitoring and
distributed control design concept.
The system integrates video digital video transmission, video storage and
management, network and so on. EV701 facilities have four business trough, can
be arbitrary inserted decoding card, maximum eight audio data. Using the h.264
compression standard EV702 field integrated access devices, the original
scattered field cameras, fast ball, haeundae, variable information board, alarm
equipment, sensor also supports the MPEG encoding standards of audio access. Can
also code 2 road of audio signal, the above data transmission, D1 shuangliu
support for real-time data for storage, CIF and Web business (including foreign
release real-time image and management personnel remote monitoring). With IP
switching function, reduce the cut of the communication network. Road centers,
regional level, the provincial center, the multistage monitoring centers
distributed provincial center set permissions, centralized management.
Second, the multicast network monitoring system solutions
Digital video relying on powerful r&d ability, and in the video field for
many years experience for customers, specially designed and developed highway
network monitoring system, digital video surveillance system satisfies highway
integrity and integration of demand, is high mechanical monitoring system of a
revolution. Digital video surveillance system of traditional video monitoring
system was overcome, waste fiber wiring quantity of video signal is easy to
generate resources, distortion, and attenuation group delay, interference,
networking, limitations and shortcomings. This system solutions in chongqing
network monitoring system construction in the application, and large-scale
achieved good effect.
Multicast network monitoring system solutions
Integrated system solutions, will all equipment, function and relationship
as a whole. Real-time compression and decompression, real-time video
transmission, synchronous data processing. Through the computer LAN or wan
connection, will be collected at the scene image to center, in accordance with
the authority may call at center, in any way monitoring image process called
image independent center, noninterference, allows multiple centers also calls
the same way, at the same time, according to the image of image permissions
judgement.
Superior center can directly control, watching the front-end monitoring
node, not through lower center forward, realize the monitoring center function.
System software by virtual matrix switch data transmission directly facing any
image, in any way calls are only after an encoding and decoding, don't exist
again plait, ensure the solution to video detail intact transmission. All the
images of system control, centralized management, unified monitoring center has
the technical scheme. Using digital video specialized design and the development
of virtual matrix software, completely replaced traditional hardware matrix,
save the investment, relative to traditional way, the whole budget maximum saves
40%. Using multicast technology to monitor center at all levels, while coder
sending video, great save bandwidth. Using IP switching broken function, make
the link in the video transmission is monitored and reasonable utilization of
existing bandwidth.
Digital video surveillance system of highway
1.optimistic design, easily achieve mutual interaction and solutions
compiled
Digital video has been committed to the transportation industry technology
innovation. With numerous equipment solutions to satisfy different customers'
specific needs, as a leading enterprises, the development of digital video from
at the beginning of establishment of all equipment and product design, open
structure on standardization. Convenient and the different needs of customers,
and system according to actual needs to easy, easy to use different schemes with
third-party vendors equipment management software integration, integration and
interoperability in chongqing and in the mutual solution (mass of actual
application.
2, centralized management of distributed control.
Using the h.264 compression standard EV702 field integrated access
devices, the original scattered field cameras, fast ball, haeundae, variable
information board, alarm equipment, sensor also supports the MPEG encoding
standards of audio access. EV702 equipped with optical fiber communication
interface card, do not need optical transceiver, optical fiber, can directly
connected to distance. Through the EV702 connection with self-healing,
cyclization and function. Can undertake centralized monitoring center (level),
distributed (levels monitoring center) storage. Road centers, regional level,
the provincial center, the multistage monitoring centers distributed provincial
center set permissions, centralized management.
3. Fully utilize existing resources, protection of the user.
Digital video specialized design and the development of virtual matrix
software, completely replaced traditional hardware matrix, save the investment,
relative to traditional way, the whole budget maximum saves 40%. Using multicast
technology to monitor center at all levels, while coder sending video, great
save bandwidth. Using IP switching broken function, make the link in the video
transmission is monitored and reasonable utilization of existing bandwidth. At
the same time, the digital video 1U4/8 standard digital video codec, just use IP
1U case can realize the four road or path of digital video simulation 8 video
decoding. The compact structure and high integration, can save you a lot of
space and budget.
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