In recent years, LED small pitch display screen development is very fast, the situation is very good. The small-pitch LED display usually refers to the indoor LED display with the LED pixel pitch below P2.5mm, with the rapid development of information today, LED small-pitch displays are characterized by seamless splicing, low brightness, high gray, high refresh rate, ultra-high definition, low energy consumption, long life and many other characteristics that conform to market demand and energy-saving economic development advantages, very popular, showing a rapid development momentum. At present, LED small-pitch displays have become an indispensable role in public safety, command and dispatch, safe cities and smart cities. As a high-end market at the top of the pyramid of the LED display market, the command and dispatch center market has strict requirements for overall applications. With its obvious advantages, the small-pitch LED display greatly meets the demand for the use of the command and dispatch center.
What is a command and dispatch system? Command and dispatch refers to a collection of equipment that comprehensively utilizes computer, network, communication and automation technologies to transmit command and dispatch instructions and information. It uses an information exchange platform as its core platform. Through the information exchange platform, the information of all participating units can be exchanged non-blocking and fast point-to-point, point-to-multipoint, and multi-point-to-multipoint information, so as to realize the rapid upload and release of command and dispatch instructions and information. The command and dispatch system can be divided into electric power command and dispatch system, military command and dispatch system, traffic command and dispatch system, emergency command and dispatch system, and production dispatch system of industrial enterprises according to the occasion of use. Therefore, the command and dispatch system has a wide range of applications, such as railways, urban rail transit, national defense, electric power, emergency command centers and other fields.
(1) Field of emergency command center
In traditional security systems, video conferencing and video surveillance do not interfere with each other and run at the same time, which means that in order to ensure the normal use of the security system, it is necessary to invest corresponding maintenance costs on the two systems, which invisibly increases the burden of use . The video command and dispatch system integrates video conferencing, video monitoring, and command and dispatch. It truly achieves "visible, clear call, accurate information, accurate positioning, and quick response" to ensure that information is collected quickly and accurately. Orders are issued quickly, which greatly improves the response speed and processing efficiency for emergencies. Provide long-distance, high-speed wireless real-time transmission for fire command, rescue, fire situation, reconnaissance, etc., which greatly improves the speed and efficiency of emergency command and dispatch.
(2) Military and national defense field
The video dispatching system is suitable for military combat training needs, and exerts powerful visual real-time interactive command capabilities in various military training exercises of the military, through this platform, the command post, training ground and even the field exercise site can be connected as a whole, combined with the military exercise site situation, and realize the close integration of theoretical training with actual troops, installation, and live ammunition operations. At the same time, the military modernization management of military airports and military docks puts forward higher requirements for integrated management. The application of command and dispatch allows the relevant chiefs and personnel on duty in their offices to grasp all matters that occur at the airport or dock site in a timely manner. Provide a strong basis for handling relevant situations and decision-making.
(3) Urban rail transit field
As the most important public transportation facility in the city, rail transit has the characteristics of large capacity, short departure intervals, and fast speed. In order to ensure the normal operation and maintenance of rail transit, the role of the command and dispatch system is particularly important. Therefore, the application of the urban rail transit emergency dispatch command system mainly uses information technology to improve emergencies, and improve the efficiency of emergency handling and emergency response of train dispatching command.
(4) Electricity field
Sufficient and stable supply of electric energy directly affects the operation and development of social economy and the happiness of people’s lives. Must rely on a mature and stable modern electric power professional dispatching command and control system, which includes the power grid dispatching command center, power production command center, power monitoring center, power trading center, etc. It is responsible for important functions such as real-time monitoring of power grid data, issuing power production instructions, power grid operation dispatching, and emergency handling.
The command and dispatch market is the high-end market of the pyramid of the large-screen display market. DLP splicing large-screen products have always been the evergreen tree in this market, and it is also a more reliable display technology in terms of reliability and stability. However, the splicing gap is still an important factor that affects the visual experience. Due to the physical characteristics of DLP splicing and LCD liquid crystal splicing, there are more or less seams. The development of technology can only shrink the seams, but cannot make them disappear. The small-pitch LED display has greater plasticity in splicing due to its seamless splicing feature. At the same time, the LED small-pitch display has a better effect in terms of consistency, and the mature point-by-point correction technology makes the adjustment process simple and easy to maintain. From the composition of the entire industry chain, we can also see that the advantages of LED small-pitch displays are very obvious. Since the LED small-pitch display is in the semiconductor industry, it is affected by Moore's Law, including the performance improvement of the main materials such as packaging devices, driver ICs, control systems, and the rate of cost reduction is very fast.
First of all, the biggest feature of the command and dispatch center application is its uninterrupted operation around the clock, coping with a huge amount of data, requiring strong information collection, rapid response, overall coordination, and comprehensive scheduling capabilities, and the stability of small-pitch LED display products and equipment , Durability and easy maintenance have become the key to the selection of the command and dispatch center; The new appearance design of the small-pitch LED large screen is easy to disassemble, beautiful and elegant, and can effectively reduce the failure caused by the wiring, etc., greatly reduce the failure rate of the display screen, and reduce the human and financial investment in later maintenance.
Secondly, the temporary emergency command and dispatch center is always facing emergency handling after major incidents and natural disasters. In the emergency command, various environments and emergencies may occur, such as natural conditions of low air pressure and low temperature in high altitude areas. In addition to stability, the display screen is usually required to be easy to install and transport. The small-pitch LED display screen is usually light and thin, and can be flexibly disassembled. In emergency command, it can flexibly respond to various environments and emergencies.
Thirdly, the display command and control room, its main purpose is to receive high-level visits, business introduction and display enterprise style, so the display effect demand of the large screen display system is very high. The seamless is precisely the advantage of the small-pitch LED screen. The integrated picture can avoid the embarrassment of splitting the picture by the seam between the units, and there will be no brightness difference between the units.
The above-mentioned various advantages can be seen that in the future, small-pitch LED large screens will become more and more favored by command and control room applications, and become a tool to effectively improve communication efficiency and achieve efficient use and sharing of information in the information age. But at the same time, the small-pitch LED display still has many technical shortcomings to be overcome, and companies need to increase R&D efforts and investment to innovate from time to time.