Weak current College】 【DLP big-screen in the application of electronic conferencing system.

<br> <br> Electronic meeting systems is the use of electronic AIDS Conference system, it has all kinds of definitions such as teleconferencing and Communications Conference, etc. With the development of the society, rear-projection DLP big-screen mosaic wall in .the electronic meeting system has become increasingly common. <br> Rear-projection DLP big-screen mosaic wall display can be set from the computer, camera, DVD video, and network and so on many kinds of different signal source signals, to meet the .needs of the user area displays various information-sharing and integrated information needs. <br> <br> <br> DLP big-screen splicing system introduction <br> <br> <br> 1.1DLP big-screen splicing system consists of the .following <br> <br> <br> (1) rear-projection DLP big-screen mosaic wall <br> <br> (2) large screen splicing machine <br> <br> (3) large screen systems management software < .br> <br> (4) signal switching system (optional) <br> <br> (5) central control system (optional) <br> <br> <br> 1.2 system capabilities <br> <br> <br> .(1) full screen, high resolution applications <br> <br> You can put a large screen display wall as unified logical screen to display the high resolution images for full screen and resolution of superimposed, such as display super-high-resolution picture .of large-scale complete network. For example, 4 × 3 stitching large screen display wall display resolution (1024 × 4) × (768 × 3) = 4096 × 2304 image. <br> <br> (2) that a multi- .channel Video signal display <br> <br> Supports all standard Video input signals, Video surveillance information, camera, video recorder, DVD player, color physical display device, and other Video signal sources can be plugged in to the big screen mosaic. Multi .-channel Video signal through large-screen splicing for, respectively, in the form in the display window wall anywhere on the zoom in, zoom out, overlays, move across the screen and full screen display, etc. <br> <br> ( .3) the network signal display (remote IP window) <br> <br> Big-screen mosaic is free to open multiple remote IP window, through the network to the remote computer screen dynamically displayed on the big screen. Remote IP window can be .unrestricted roaming, drag and drop, resize, and other window overlay. <br> <br> (4) each kind of signal mixed display <br> <br> Big-screen splicing machine has deal with ultra-high resolution mosaic computer graphics .signals, Video signals and RGB signal cross-screen display and display different types of signal superposition, either signal window can be arbitrary zoom out, zoom, cross-screen or full screen. <br> <br> (5) multiple real-time .display RGB signal <br> <br> Supports full real-time RGB signal, can receive a maximum of 16 RGB signal input real-time road, 64-way live video signal input, optional multi-channel non-realtime RGB signal input. .DLP big-screen mosaic project <br> <br> <br> DLP big-screen mosaic works have installed compact, involve peripheral equipment more features, but a lot of maintenance work needed in non-conventional working hours. A complete project, in .addition to the big screen include big-screen system itself, but also related to the computer (software and hardware system), network, video surveillance, cabling, etc; in addition, the engineering staff of color sensitivity, fine work attitude and sense of .responsibility are very high; in addition, you also need engineering personnel about the operation of the entire project process, timely and relevant departments, in different stages of a project to complete the corresponding working actively to achieve smooth content inspection completion. Project leader not only .has excellent engineering technology, you also need to have strong project management and operation ability. <br> <br> General DLP big-screen mosaic project can be divided into: project planning, early-stage exploration, project implementation, project, later four .stages. Any stage of work prepared or not enough detail that may lead to increased project costs or even affect the acceptance; sometimes because there is no early work, in accordance with the requirements for future maintenance of a lot of inconvenience. Therefore, the engineering .specifications becomes especially important. It allows us to reduce the randomness in engineering, increase effectiveness and purpose, so as to achieve greater system stability, improve the quality of the project. <br> <br> The DLP big-screen mosaic project, preliminary .investigation and project implementation are the two important stages of their work is good or bad will directly affect the progress of the project and the project acceptance. The following explains the two phases of the project specification point. <br> <br> 2.1DLP preliminary .prospecting points <br> <br> DLP project for project leader, in addition to on-site construction is headed, and customers of the Exchange, the project's overall construction planning is very important. Which is detailed in the early exploration is largely determine project .cycle, fees, the final effect. On the basis of past work experience, a complete project in early-stage exploration to note the following points: <br> <br> (1) external frame openings and lower edge <br> <br .> Outer frame along open size calculation formula: width W = A × columns + 25 × 2, height H = B × rowcount + 25 × 2 already consider screen pallets, aluminium edge and the thickness of the screw head. <br> <br .> Framework: framework for first consideration should be given to the selection of materials, solid and overall stability, the material can be wooden + plywood + aluminium forms can also be used to assemble the steel structure welding +. <br> <br> Taking .into account the convenience of installation and maintenance, the framework must be detachable == ==. Within the framework of the outside the tile wall outside along the margin (above and below the four sides) each side reserved about 25mm clearance, large tile wall .should also be increased in accordance with the appropriate number of columns. <br> <br> Consider maintenance access side door dimensions so that the entry of the box, the maintenance access is in principle not be less than 1.2m wide. Detachable side bar .to suppress screen edge 3-5mm is appropriate, in the box and the screen is completely seated, then fixed detachable side bar. <b> </ b> R> <br> (2) base dimensions <br> <br> According .to the surrounding environment to determine the base height 50-inch add-on unit, the cradle can fit around high point, is appropriate; 1m 60 inch can 0.8m to 1m. In short, the height of the base is made up of: .storey, viewing angle, and other factors. <br> <br> (3) the ambient light <br> <br> Requirements for the front screen 4m dark areas, it is best not to install the lamp, you can install the internal .downlight, arranged parallel to the screen, you must have a separate control switch. The direct rays of light does to the screen. Across the Hall lights according to the direction parallel to the screen for the control, do not use a strong light source, .lighting of layout principles: the workspace have sufficient lighting intensity, but on the screen and will not have a significant impact. Screen shot in the vicinity may light (such as Windows), should have the necessary shielding. Maintenance access to lighting no specific requirements ., but the best equipment in operation light off. <br> <br> (4) air conditioning <br> <br> Maintenance channels install air conditioning (or have the outlet), whose outlet location should be as far away as possible from .projection walls (1m or so good), and the outlet of the wind does not blow on a case directly to avoid screen damage and heat unevenly. In front of the screen (ceiling) air-conditioning outlet, not less than 1.5m screen. .<br> <br> (5) ground <br> <br> Installation of the device surface requirements to flat, if it is tiled ground to confirm the ceramic tile the following material can withstand the weight of the large screen. If you are .anti-static floor, cradle to fixed in anti-static floor under the ground, can not be installed in electrostatic floor. <br> <br> (6) power <br> <br> The best way of using UPS power supply, .and confirm the demand for large-screen system power capacity. DLP Projection unit in a single rating for 380W, controller 600W, matrix 200W. The entire DLP systems to one times the capacity reserved for General requirements for the use of flame-retardant cable wire .. Total of all equipment requirements; <br> <br> (7) wiring <br> <br> Determine the peripheral cabling between the large screen is embedded line tube or cloth trunking and location. <br> <br> Wiring the power .cable and signal lines to separate, to avoid interference to the signal and the customer is responsible for personnel determine project available pipe Groove road, including power, signal, network, and confirm the channel meets the actual needs. <br> <br> Based .on the large screen size, the cabinet position, signal source location, and calculates the required connectors for various cable length, number of signal name. <br> <br> (8) the entry conditions <br> <br> DLP equipment belonging .to precision equipment, enter the installation must meet the following conditions, you must explain to the customer on-site repair basic end with no visible dust; if the temperature of the scene from 25 ° c, air conditioner can be turned on; the power .must be opened. <br> <br> 2.2DLP project implementation phase points <br> <br> (1) DLP cable length calculation table <br> <br> (2) several common cable production <br> <br> ( .3) system installation and debugging <br> <br> System installation standards: <br> <br> Physical slot requirements even, smooth, slot width should be at least into a piece of paper, widest point to contract requirements; cross slot Department .should be no apparent malposition, hand touch should no bump Sensing inclination, level control represents the entire system installation status, before and after, around and down three conditions, namely with a plumb, La line and the horizontal ruler to measure; <br> .<br> There is currently no specific standards, engineering experience not exceeding 2mm is appropriate; if the bounding box frame has been completed and the size is not the rules, and user confirmation screen system level to tilt, who as the base with ground. .<br> <br> (4) color adjustments <br> <br> Color adjustment criteria: <br> <br> The unit base color red, green and blue color and brightness; <br> <br> The units is 100 .percent white luminance consistent the units is 50% or 30% brightness consistency other grayscale to essentially the same basic color synthesis. DLP big-screen installation conditions <br> <br> <br> (1) large screen systems of power supply system must .be earthed well, grounding resistance less than 2 Ω; <br> <br> (2) DLP Projection unit monomer to power 380W, the user provides power capacity must be greater than 2 × n × 380W; <br> <br> ( .3) power supply system possible three-phase balance, in particular the three-phase power supply system of five-wire is particularly important; <br> <br> (4) installation Note use good quality cables and plugs, note cable can afford .current size and retains certain allowance, in General, each socket only 4 projection unit; <br> <br> (5) requirements for the construction site clean, dust-free; projection unit installed ground smooth, firm; <br> <br .> (6) it is best to use surface anti-static floor, preferably using non-reflective surface materials; <br> <br> (7) wall plaque set tone bright, with darker lines, appropriate sites equipped with sound-absorbing materials ., wall surface matte; <br> <br> (8) rear-projection mosaic wall behind should have not less than 1.2m maintenance channels; <br> <br> (9) rear-projection mosaic wall working environment temperature-20 ℃ .+ / -5 ° c, relative humidity 10% to 70% non-condensing; <br> <br> (10) fire sprinkler to stay away from the rear projection box 1m, cannot adopt the sprinkler fire head, use spray extinguishing agent .; <br> <br> (11) screen 2-3 m wide cannot have lights, if you must install you need to install separate switch for convenience at any time close; rear projection mosaic wall does not have the direct rays of sunlight; .<br> <br> (12) central air-conditioning outlet cannot be too close to the screen, there should be more than distance 1.5m avoid screen because both heat and cold without deformation; split air conditioning not directly on the screen of the .hair; <br> <br> (13) renovation reserved for rear projection display wall window overall size than rear projection display wall dimensions more 25mm (overedging sewing before size), namely: (rear-projection mosaic wall total width + 25mm) × .(rear-projection mosaic wall total height + 25mm); nearby the best made detachable. <br> <br> <br> <br> <br>.