In recent years, following the rapid development of the power system, a demanding, advanced and useful grid dispatching initiative system has been ensured. To meet the increasingly intelligent and demanding system requirements for real-time data collection, processing, monitoring and manipulation. The power grid dispatching initiative system generally includes a liquid crystal splicing large-screen induction flashing system. The system bears the flashing of the main control system, the monitoring system's accounting machine, network, and video signals, and is used in the manipulation of different planned power dispatching systems.

 The display system makes full use of the ultra-high resolution and ultra-high contrast flashing features of the digital splicing wall, combined with the GIS and GPS system, and the spatial processing of the GIS and the GPS system. The operation status and real-time information of various power equipment collected by the accurate flash system will also be supplied. Visual flashing of device orientation, grid geographic distribution, information accounting, query, graphics processing, etc. It can segment SCADA/EMS system, substation operation processing system, power material processing system, DTS system, dispatch production processing (DMIS) system, electricity billing system, GIS and GPS application. Analyze the operation status of the power system, assist the dispatcher to understand and grasp the operation status of the power system, ensure the safety of the grid operation, and provide a modern, intuitive and quick flash method for the scheduling selection plan.

  In view of the special requirements of the power dispatching system for high reliability, professional manufacturers of projectors tend to apply high-resolution and high-reliability skills to projectors that can perform daily operations.

  In order to make the projector more suitable for multi-screen splicing of rear projection, manufacturers often give special functions to this type of projector:

a. Color temperature adjustment function. That is, the projector can continuously adjust the color temperature of the picture, and can even adjust the single color of the red, green and blue colors. This feature is flashed on a single screen and can be used to ensure that the projected picture and the supervisor are completely together; in the case of multiple projectors flashing together, the color between the screen and the screen can be accurately combined.

b. Lamp power change function. That is, the lamp power of the projector can be adjusted. There are generally three methods: active brightness adjustment method, maximum brightness method and economic brightness method. Users can choose according to their needs. The active brightness adjustment method is the most important. In this method, the sensor inside the projector will actively detect the output brightness of the projector, and adjust the power of the bulb through the closed-loop control system, and then ensure that the projector is used during the entire life of the bulb. Can maintain a stable brightness output. This not only extends the service life of the bulb, but also reduces the operating cost, and ensures that the brightness between the screen and the screen is consistently uniform in the multi-screen splicing operation.

c. The characteristics of the light source are constantly improving, and the stability of the spectrum makes the color of the picture not change with the extension of the application time.

d. Longevity number of light source planning, reducing operating costs. In addition to the brightness of the projector light, the longest life of the lamp has spanned 6,000 hours.

e. In order to ensure high reliability of the projector, the manufacturer ensures high reliability of each component in the planning of the projector. Today, advanced projectors have a MTBF that spans 40,000 hours.

  In the planning and production of projectors dedicated to multi-screen splicing, most manufacturers are more focused on rear-projection integration planning, which saves space and equipment. The 127cm (50-inch) rear-projection integrated DLP projector is only about 67cm deep, making it ideal for applications where space is at a premium.

  In order to travel as much as possible along the entire projection screen wall, reduce the sense of splitting, the most advanced is the use of seamless stitching skills, that is, each screen on the projection wall has no border, from the front, the adjacent screen is tight Close together, the vacancy is less than 1mm.

  However, the use of seamless stitching skills often has severe requirements for ambient temperature and relative humidity to ensure that the screen does not deform significantly.

  Regarding the selection of screens, it is still the first choice to select high-gain wide-angle screens. The center gain of such screens is generally 3 to 5 times, the horizontal viewing angle can reach 180 degrees, and the resolution and color reproduction are good. Computer graphics and video signals.

  Because the gain of the high-gain wide-angle screen is changed with the change of the viewing angle, this will cause the brightness of the picture to follow the unevenness of each screen when viewed from the surrounding surface of the screen wall, resulting in uneven brightness and affecting the overall effect. However, when the projector is not bright, it is the best choice to use this type of LCD screen.

  As the brightness of the projector continues to move, the effect of the brightness gain of the screen on the overall effect will be less and less, and the view of the entire screen wall from any viewpoint is a more and more intense picture, so in the future Using a very high-brightness projector and choosing a brightness-free gain, a high-definition diffuse screen with brightness from any point of view becomes a trend.

  The large-screen splicing control system is the brain of the entire large-screen splicing system, which directly controls the display content and the flashing method on the projection display wall. In view of the special requirements of the power dispatching system for high reliability, it is necessary to select a large-screen processing device that supports real-time RGB signal input when selecting a large-screen processor.

  All the application windows are transmitted from the network to the splicing display control system. After being processed by the splicing display system, the multi-screen splicing method is displayed on the screen wall.

  The entire splicing flash wall provides a huge information flash surface. Assuming a resolution of 1280×1024 per screen, a 2×6 splicing flash wall provides a resolution of 7680×2048, which is a 1280×1024 accounting. The amount of information flashed by the machine monitor is 12 times.

  All the application windows can be moved and scaled on the LCD screen wall. Therefore, it is possible to expand a certain part of the grid map while displaying the entire grid structure graph, and also to be able to monitor the real-time video of a substation. The electronic maps of the areas and even the weather conditions flashed together on the screen wall, and local corrections on any part of the entire grid can be reflected on the screen wall in time. Moreover, following the continuous advancement of the intelligent power dispatching system, the advantages of the large-screen projection splicing flash system and the network system of the computer will be more and more superbly flashed. The skills of the whole system are more perfect, the cost is gradually reduced, and the large screen projection The spliced display system will eventually replace the traditional analog screen.