Now, many monitoring and visualization occasions will install LCD splicing display systems to display real-time monitoring images and other information, such as public safety, traffic police, production companies, banks and other institutions, high resolution, high brightness and contrast, high cost performance, etc. The advantages of this series make LCD splicing screen gradually replace DLP as the large screen of the monitoring center. So what is the way to build a solution for the entire visualization system?
The LCD splicing screen is a background display device, which consists of a front surveillance camera. The video image sent through the front end is decoded by the decoding platform and displayed on the upper screen, and supports multi-screen viewing, such as full-screen, split-screen and multi-screen. Ensure that all monitoring images are displayed at the same time. Therefore, the following aspects should be generally paid attention to.
1. The number of front-end monitoring points determines the number of large screens
Sometimes the number of monitoring points is definitely different. For example, the traffic police in the jurisdiction may have hundreds of monitoring points displayed on the screen at the same time, while ordinary companies or schools have dozens of points, so different monitoring numbers also determine the back-end LCD splicing screen.
Since all monitoring points are considered to be displayed on the LCD splicing screen at the same time, a reasonable allocation is required, although the decoding platform can achieve 64-channel monitoring images on a single screen, in this case, the screen is too small. You can't see clearly, so the average user won't think about so much, most of them use a single screen or 4 partitions, 9 partitions, etc. This can be determined based on the viewing distance. If there are 100 monitoring and display points in 9 segments, 12 screen points are required. Of course, the specific number depends on the size of the installation location that is not allowed, and should be considered in many aspects.
2. Video source transmission distance and decoding
Today, most network cameras are very popular. In the past, there were fewer and fewer analog cameras, so most transmissions were over network cables. However, if the distance exceeds a certain distance, the network cable cannot be used due to the effective transmission distance of the network cable. At this time, only 60 to 70 meters of optical fiber transmission is used. The transmission distance of traffic intersections, safe cities and snow light projects is usually dozens of kilometers. At this time, more complicated wiring is required. In addition to the transmission line, the switch is also divided into multiple levels for centralized aggregation, and then connected to the DVR and decoding platform.
DVR is responsible for image storage. We can calculate the storage time according to the formula. The decoder is a tool that decodes the image from the front of the LCD screen. It also has a matrix function, which can control the display position of any image by controlling the computer. In general, the brand of the decoder must be the same as the brand of the previous camera, which will not cause incompatibility problems, but if the front camera has two or more marks, then we can use our universal decoder Platform to solve. 3. LCD splicing screen display system
LCD splicing screen, we can understand that it is a large screen that can be spliced. It is an industrial-grade display device that can meet the requirements of continuous startup throughout the day. The shelf life can reach more than 80,000 hours and is stable. When running, if there is no problem with external force collision, its main advantages include high resolution, medium brightness, high contrast and multi-slit options.
By choosing the LCD splicing screen, we can choose according to the specific monitoring quantity and the size of the installation location. First, we can design and use large LCD splicing screens according to length and width. The most commonly used are 46, 49, 55, 65 inches and so on. Seams include bilateral 5.3 mm, 3.5 mm, 1.8 mm, 1.7 mm, 0.88 mm, etc. The smaller the seam, the better the display effect, but the higher the price. We can choose according to our general budget. The mainstream usage of general monitoring centers far exceeds 3.5 mm.
Then the panel, now Samsung and LG LCD splicing screen use more than two panels, Samsung's price is slightly higher, the display effect has its own advantages, Samsung's color is softer, the balance effect is better, white is good, and LG's color is brighter. , The contrast is stronger. In addition, in terms of stability, LG is usually better, especially for small connection panels, because the stability of the LG 1.8mm panel is much better than the Samsung 1.7mm panel.
In terms of installation and technology, the installation method can be selected according to the actual situation. Cabinet types, support types, wall types, etc. are commonly used. Considering the professional level, manufacturers are professional and technical personnel to install on site. If the number of LCD splicing screens has ended. In addition, it is necessary to reserve maintenance channels to facilitate employees to enter maintenance.
