2. Design Principles and Basis
Taking "high starting point, high standards and strict demands" as design principles, backed by accumulated experience on system design and engineering implementation, based on scientific design principles, standards and specifications, this project has the quality of advancement, applicability and economical efficiency, which ensures the system to achieve world-class level.
1. Design principles of large-screen display system
(1) The principle of applicability
Large-screen display system, as the important component of image and service publicity, should be practical and meet the needs of CIS image.
(2) The principle of conservation
By taking full advantage of multiple subsystems of equipment, the system building fulfills the principle of doing more things by using less money and pursuits the most rational allocation and the highest possible performance-price ratio.
(3) The principle of reliability
To meet the requirements of 24-hour operation of large-screen display system, the design should be based on the principle of reliability which relies in choosing high-reliability equipment in key parts and adopting cutting-edgy high-technology to protect the important controlling nodes.
(4) The principle of standardization
The selection of control technology and equipments for the large-screen system based on the international standard can fully utilize the advantages of various products and make them as an organic whole. That is to say, the mutual dependence of communication environment, the hardware environment and the software environment should be kept to the minimum, and should give full play to their own advantages; at the same time, the interconnect of large-screen video wall system creates favorable conditions for information sharing and controlling on the internet.
(5) The principle of expandability
With the development of internet, the system expansion is inevitable. Therefore, the feasibility of future system expansion is considered.
(6) The principle of advancement and maturity
According to the characteristics of system self-development and the development trend of control technology, advanced, mature and reliable international technology are adopted in the mainframe choosing, system structure design, equipment configuration and management methods, and so on.
(7) The principle of compatibility
The large-screen display system is required to achieve perfect aggregation of various subsystems, so the system compatibility becomes very necessary.
(8) The principle of maintainability and manageability
View from users perspective, we take full consideration of the equipment installation, configuration and operation convenience, aided by strong network management and rational allocation, the product can adjust the system load, monitor the system status and control the system operation.
2. The design basis of large-screen display system
(1) Standards
EIA/TIA568EIA/TIA569EIA/TIA-TSB36/40;
IEEE802.3 10BASE-T;
IEEE802.5 Token Ring;
Industry standards and international commercial building wiring standards;
Relevant information about centralized monitoring stated in ISO / IEC JTCI/SC25/VVG3; XT005-95 The General Technical Requirements of Power System in Communication Bureau (station) (Temporary Provisions);
Integrated Power Grid, 472 [1997], Communications Power Supplies, Monitoring And Management System In Air-Conditioned Room (Temporary Provisions);
GBJ 232-82 Installation Of Electrical Engineering And Inspection Norms: 17th Chapter: Test Standard Of Electrical Equipment Delivery [1983.5];
BG6510-85 The Cable Distribution System Of 30MHZ To 1GHZ Voice And Television Signals;
GB 84 Communication Network Technology Standards Compilation[1989.10.];
GB 50252-94 Uniform Standards Of Engineering Quality Inspection And Evaluation In Industrial Installation [1994.12.].
(2) Installation and design specifications
Industrial enterprises communication design specification;
GA/T75-1994 procedures and requirements of security project;
GA/T74-1994 common graphical symbols of security system;
GA/T70-94 compilation methods to cost estimates budgetary of security project;
JGJ/T16-1992 electrical design specifications of civil construction;
GB50198-1994 engineering technical specifications on closed-circuit television monitoring systems of civil-house;
GY/T106-1999 technical specifications of cable television system;
GB50200-1994 technical specifications of cable systems engineering;
Lucent SYSTEM general design principles of structured cabling system;
Generic cabling design specifications on architecture and building construction;
????Generic cabling installation practices of architecture and building construction;
3. Design concept of large-screen display system
Based on the careful analysis and research on the requirements of large-screen display system, while taking consideration of the following factors: advanced technology, reliability, performance-price ratio, upgrading expandability, our company put forth a design scheme which takes DLP large-screen display system with high-resolution and internet video transmission system as the main body. The following design ideas are embodied in this design scheme:
(1) System advancement
Nowadays, in the projection display areas, it is a qualitative leap from analog circuit display to the all-digital display system. All systems we recommended, from DLP projector to control system, are digital, which presents the latest display and processing technology in the world. All-digital system is a clear sign of our recommended system.
The DLPTM(digital optical processor) projector with DMDTM (digital micro-mirror driver chips) produced by TI company (Texas Instruments Company) of the United States is adopted in the system, which has special large-screen projection mechanism with high resolution, high brightness, better color reproduction and brightness output performance. It is the representative of the most advanced technology level of cabinet type projector. Today, DLP products have been applied and popularized throughout the world at rapid pace, and have achieved great success in domestic market.
The large-screen display wall system management software developed by our company connects discrete subsystems as an organic whole by serial ports and IP parallel structures. C/S working mode is used in system software which stands a better chance to realize sub-control on network and centralized management of right limits. With the adoption of modular design in software system, the system has good advancement and expandability.
????In our opinion, the products recommended by EXV company will maintain its world- leading performance in the 21st century.
(2) The reasonability and economical efficiency of system
????In pursuit of high efficiency and low cost are the necessary measures on the way to commercialization in all Indus tries. Therefore, the adopted equipments must take consideration of the following: reasonability, good performances, economical efficiency, the overall cost and the cost for long-term operation.
????In the whole design process, the company always takes the reasonability of allocation as an important basis. In every aspect of design, the reasonability of allocation, utilization rate, performance-price ratio are taken into account to make fully use of users' money.
????Every aspect of design, from the selection of core equipment of large-screen display wall system to the modular design, fully reflects our consideration for users. We can say that the equipments adopted in this design are the most reasonable allocations which can fulfill the same function, and every product has the high performance-price ratio by fully playing their performance.
????The recommended whole system has the characteristics of low power consumption and maintenance free, which can reduce maintenance costs in system operation. Power consumption for single projector is less than 120W, require no maintenance for 24 hours continuous operation. The life expectancy of cold light bulbs (PHILIP UHP) is more than 8000 hours. The operation of entire system can save labor costs, electricity costs and material costs.
(3) The reliability of system
????For the specification of large-screen display system which is required to work 24 hours a day and 356 days a years, high-reliability and high stability are demanded to ensure normal operation in the whole year.
(4) Easy expandability of system
????The "plug-and-play" mode used in the module combination enables the number of projection wall display module to increase or reduce without affecting the display function of the system. Therefore, the situation of a few screen only used in one controller can be avoid, which makes the system strong in expandability.
(5) User- friendly interface
????The company takes "high technology products with easy operation" as its design objective. Compared to the situation that more advanced system, more complex operation, our company optimized the operation software and adopted the mode of operation: suing by seeing it. User-friendly interface and simple intuitive operational methods enable the users to operate advanced system after being trained for a few hours.
(6) Digital Control
????Color optimized compensation technology and accurate color digital control technology are used in circuit. The highest level of color balance and brightness balance are ensured in combined displays from the aspects of hardware and software. The following measurements can be done to each projection unit: image contrast, brightness, brightness balance, dark-balance, correction of bulb color and the choice of color temperature.
(7) The best screen splicing technology
????Based on professional and technical experience for many years, combined with the latest scientific results, we fulfilled the best large screen splicing technology. The screen splicing has achieved excellent effect by using special materials and technology; we ensure that the splicing is less 1mm between screens in large-screen display system by taking construction into account factors and slot preparation for temperature difference.
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