【 Weak current College 】 control room large-screen display system design and installation process 】

Control room in military command training, industrial production scheduling, network monitoring, traffic management, and other fields plays a very important role is various systems "brains", system of various intelligence information is passed to the command room, various command execution information from the control room to every corner of the system. Current large-screen display system in the control room has access to a wide range of applications, is vision Center control room, scientific and rational design of large-screen display system rather than simply duiche device becomes an important issue. This article briefly describes the control room large-screen display system design steps and in all aspects of the problem. First, understanding and analysis of user requirements 1, building structure: the main means indoors of geometry, it decided a large-screen display of the size and location, and implementation. 2. Visual business situation: including main number and location of the observer, the minor number and location of the observer and the lighting conditions. In the design of large-screen display system, and watch the display different, due to the large-screen display for features not only information but also to share information and comprehensive information, particularly the large-screen display is not possible to give the viewer the same position and viewing, so to distinguish and identify the main Viewer, a minor number of spectators, watching the location and watching the way is important. For example, a large screen in the main role is to promote and to visitors to watch, according to the visitors visit the channel and watch location to determine the location and the large screen size. Control room lighting design and large-screen display has close links, should be consolidated. Uniformity of illuminance and its direct impact on the large screen display brightness and contrast of OK, so it should be given adequate attention. 3. system information: including the nature of the signal (computer graphics, video), signal resolution, signal source and signal transmission mode, and displays both the number of
Requirements and methods. Display system (equipment) primary role is to reproduce the signal real, so understanding displayed signal on select what kind of large-screen display technology has
Direct relationship. For example, the display of pure video signal, is still the best CRT technology and displays Teletext signal, DLP or LCD technology has its advantages. The number of signals and display requirements (how many simultaneous display) combined with the viewer's location and distance decided to big screen size and display unit quantity. Signal transmission and signal quality involves the selection of the display device or if you need to signal processing equipment. Second, the combination of ergonomic principles for big-screen design combined with geometrical dimensions of the control room: 1, according to the most distant viewing distance to calculate the screen height up to watch the distance is defined as the last row, the distance between the edge of the screen, the Viewer. General big-screen display of height H = MDV/4-8-2, according to the most distant viewing distance to determine the character size due to human eyes resolution is divided into 15 arc, the minimum character height of the display L = MDV×tagG15 "= 0.0026MDV 3, according to a recent viewing distance to determine the screen width of the viewing distance means recently for the first row of the Viewer, the distance from the big screen, because the first row of the edge source of viewers watching the big screen to the other side of the deformation and when graphics, distortion of the first row of the distance from the big screen and the first row of table arrangement and the width of the big screen. In General, most edge Viewer and other side view graphics not more than 45 degrees, with a maximum of 60 degrees. As in Figure 3, Figure 4 shows. 4, big-screen height from the ground to ensure that the back of the watch, the viewer should be more than front staff head's height or will control room designed for ladder format, the height of the current console is generally between 110-125 cm, large screen height from the ground shall not be less than the height of the console. 3. Select the appropriate large screen when the screen width and height to determine, according to the information requirements and allow space to select the way of the big screen. If you display less information or projection depth (using the reflection system) allows, you can select a single screen to toggle the display of large screen, this approach is simple, reliable, economical, convenient, and at this point to take into consideration recent, up to the Viewer to view images of exquisite level, select the appropriate resolution of the projector. If you display information more or projection depth is not allowed, you can select multiple screen large-screen projection display walls to form, display wall optical slot (gapbetween image) has no basis for judging the lost information, display wall physical slot (gap between screen) to structure and firm, effective fixed screen for judgment. Don't blindly pursuing fine seam or welded, this increases the cost, potential risk of some thermal expansion or contraction. Display wall there are two modes: one is the use of standard projection display unit. Current common is a monolithic DLP Projection unit, the unit size of 50 inches, 67 inches, 70 inches, screen using UCS/GUCS/Blackscreen curtain, add-on gap General smaller than 1mm, unit resolution XGA or SXGA, this approach has a small footprint, full resolution, image characteristics. Another way is to use custom styles, that is, according to the specific project, select projector, projection screen and screen splicing patterns to form the display wall, the Unit screen size can be of any size, add-on slots 1-2mm, to projectors can choose 3-chip DLP chip DLP, LCD projector, or cell resolution XGA or SXGA. This way a flexible, versatile, cost-effective. 4, big-screen system device selection when display size and display mode, you can make big-screen display devices and equipment selection, mainly including (core), overhead projector, projection screen, Mosaic structure, image processing and control equipment, interfaces, and converting equipment, signal source and device central control equipment, etc. The system function to determine the combination of circumstances, the budget, make a selection is not difficult. Here to point out the device selection on performance (technical specifications) must be the user's attention. For example, a portable business projection bodies into the projection display wall, the brightnessUniformity, color uniformity is not guaranteed. In the control room, rear-projection should be a must. The use of the screen should select optical lens screen contrast, anti glare, screen pitch to less than the size of a pixel in order to prevent ' the mole ' effect, the focal length to the screen and the projector's lens basic match. With optical screen use of projector should, as far as possible, with the projection axis, the projector light wild geometric properties. Other should possess characteristics and color adjustment of components. Mosaic structure of selection, in addition to meet the requirements of tailor-welded, should, whenever possible, choose a firm and has certain characteristics of heat-resistant products, and should have the characteristics of self-support. Image processing and control equipment for select major display functions and signal processing. Interface and converting equipment choice must guarantee the quality of the signal source image does not reduce the bandwidth, signal to noise ratio and other indicators are very important. Central control equipment choices are mainly considered a friendly interface and stability. 5. big-screen system installation and commissioning of large-screen system installation involves installing and debugging electronic system, you should choose the professional manufacturers, such as standard projection unit installation should choose vendors trained engineering technical personnel, in particular the customization mode, be sure to select the strength and stability of the installation team company, otherwise the untold troubles. 6. big-screen system testing and acceptance of the testing of large-screen system acceptance including system function acceptance and technical performance acceptance. Acceptance of the technical performance, easier acceptance of structural parameters and photoelectric parameters of acceptance you will need a dedicated optical detection equipment, the parameters involved in the design field is more difficult to test, can be used only by the expert group on subjective judgment. An ideal big-screen system is that each Viewer is like watching their monitor as clear and comfortable, but this is just the ideal, practical
Does not exist. In practice, a large-screen system is available from the following aspects: 1, in normal use conditions, the display screen's brightness, contrast, and color uniformity;
2, images, and texts of fidelity;
3, mosaic of gap is resulting in a loss of information;
4. main viewers can see all the information without inconvenience;
5. If the system is as much as possible "will light to the viewer's eyes";
6, stable and reliable, and routine maintenance;
7, running cost is low. 7. big-screen system guarantee conditions 1, maintain control room clean and ventilation;
2, the control room's temperature and humidity control within a certain scope;
3, lighting systems and large-screen display system unified consideration;
4, console design to meet the ergonomic requirements;
5, seating layout to meet the vision and business process requirements. VIII. conclusions on large-screen display system design, is actually a room sizes, seating arrangement, display Windows, environmental conditions, the use, operation, personnel, budget, and many other aspects of the integrated and balanced process, only the relationships between the factors mentioned above make clear, after multiple interaction with the user, to get an optimal design, is also the best price. 9. control room design steps as specialized in large-screen display technology of high-tech company, we adhere to rigorous scientific research work style, for the majority of customer service, follow these steps to display the control room. 1, accurate definition requirements
2. the draft proposed programme and communication
3. detailed technical design
4. technical demonstration
5, manufacturing and installation and debugging
6, commissioning and acceptance
7, technical training and after-sales service