In recent years, the concept of smart transportation and smart city has gradually been applied to actual city construction. The "brain" to realize smart applications is a command center display system, which can real-time transfer and display various data, including video surveillance images, of the transportation department through the network, enabling management personnel to make corresponding commands and dispatches through the content displayed on the screen and achieve remote management.
Generally, this kind of intelligent transportation command center display is mostly installed in transportation management departments and government emergency command centers, and the overall solution is also divided into several important parts, among which the screen, control system, and signal source are the three main components.
In the early stages of the design scheme, understanding the actual needs of the user is the top priority, such as how many surveillance images are there, how many computers are controlled, how many sub-control centers there are, and how to connect the entire system. It requires a complete set of solutions, especially for large-screen products, there are currently three main choices, and the functions and effects of choosing different large screens are also different.
The LCD splicing screen is an industrial display screen composed of LCD technology, and it is currently the most widely used and cost-effective type. Its principle is similar to that of a television, but its panel is industrial-grade, supporting 24-hour display use. Its advantages are low price, stable and reliable performance with very low probability of after-sales problems, and a series of display characteristics such as high definition, high brightness, and rich color. Pictures on the screen are very clear, and the image contrast is high. In particular, one screen can split multiple monitoring screens to meet the needs of many monitoring occasions. For example, in general transportation command centers, there may be hundreds of video monitoring routes that need to be simultaneously displayed on the screen. At this time, one LCD splicing screen can split and display dozens of monitoring pictures, which is very powerful.
Because the cost-effectiveness of the LCD display monitors splicing screen is very high, with a stable after-sales service, it has become a very widely used command center display product in the field of smart transportation.
The smart transportation command center display system also needs a core control platform, which is the "brain" of the entire system. It is mainly used to control the display content and display methods of the entire screen. However, depending on the different screens of the front-end, the control devices also differ. If an LCD splicing screen is used, a matrix, decoder, and other devices are commonly used.
Usually, the signal sources that match the smart transportation command center display system are mainly various video surveillance signals. It requires close cooperation through the network to transfer surveillance signals that are several kilometers or even dozens of kilometers away to the backend command center. There are many types of monitoring cameras, and their pixels also vary from high to low. They are basically transmitted through fiber optics. Through fiber optic transceivers, switches, and other devices, surveillance signals are centralized to the backend control center. After storing the images through DVRs, the signal sources are transmitted to the command center display screen through central control processing equipment, thus forming a basic intelligent transportation management system.
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