Industrial LCD screen is a liquid crystal display screen used in industry. It is obviously different from ordinary liquid crystal display. Industrial LCD screen is required to be able to adapt to extreme environment, stable operation and long service life. The advantages and disadvantages of weighing characteristics and technical conditions are important indicators in the display selection process. Industrial LCD screen applications are different from ordinary LCD screen applications. Industrial LCD screens have the following characteristics compared to ordinary LCD screens.
"What is the difference between an industrial LCD screen and an ordinary LCD screen"
1. Stability of the whole machine
When an industrial display screen constitutes a closed-circuit monitoring system, it usually needs 24 hours a day, 365 days a year of continuous uninterrupted power use (while TV computers usually only work for a few hours a day), and the application environment of some display screens may be harsh, This requires higher reliability and stability of the display. Compared with televisions, in terms of design, the current, power consumption, temperature, and ability and margin of anti-electrical interference, electrical shock, and average trouble-free use time of industrial LCD screens are much longer than that of TVs. At the same time, industrial LCD screens It is also necessary to use a fully shielded metal shell to ensure electromagnetic compatibility and interference performance; in the selection of components, the characteristics of the components used in industrial LCD screens, such as withstand voltage, current, temperature, humidity, etc., are higher than those used by TV sets. Components; and in the installation, debugging, especially the process requirements of components and the aging of the whole machine, the requirements of industrial LCD screens are also higher. When the TV is manufactured, the aging of the whole machine is usually about 8 hours at normal temperature on the assembly line. The aging of the LCD screen requires aging on the aging pipeline in a high-temperature and high-humidity closed environment for more than 24 hours to ensure the stability of the machine.
Second, the image clarity
The LCD screen has the function of intuitively reflecting the image quality, plus the full 1920 * 1080 resolution. For the selection of display equipment in the field of broadcast TV, the LCD screen is the preferred display device. The resolution of the industrial LCD screen is automatically adjusted according to the display output. (It can be supported regardless of vertical or horizontal); its high reliability and high-definition display capability will ensure that you can record the edited high-definition video and audio, and the video signal is completely displayed in front of the viewer. The LCD TV in the ordinary LCD screen only supports the common resolutions of several TVs specified in the manual. Because there are only a few resolutions of civilian TV signals, as long as the LCD screen of the TV is processed according to several common resolutions used by civilian users, special resolutions will cause flowering
3. Color reproduction
If the definition is mainly determined by the amplitude-frequency characteristics of the video channel, the degree of reproduction is mainly determined by the phase of the chrominance signal and the brightness signal of the three primary colors of red (R), green (G), and blue (B) in the display. Decided. Since the industrial display screen usually observes static images, the requirements for the color reproduction of the display screen are higher than that of the TV, so the viewing channel of the industrial LCD screen should be processed in brightness, chroma processing and R, G, B processing Equipped with accurate compensation circuit and delay circuit to ensure the phase synchronization of the bright / color signal and the R, G and B signals. For ordinary screens such as LCD TVs, due to the requirements of the use environment, the image is displayed after being touched up. It cannot fully reflect the actual effect.
Fourth, the use of machine materials
Due to the requirements of the use environment, the metal part of the industrial LCD screen machine shell material is used. And the internal board line is industrialized design, not easy to age; the embodiment of energy saving and environmental protection concept: low energy consumption design; the use of environmentally friendly materials. Regular appearance, easy for splicing, combination installation and other industrial needs. For ordinary LCD screens, the entire casing is made of non-metallic materials. The internal board line adopts a civil design, and it is easy to cause aging of the machine parts after a long time of startup. In addition, the appearance of civilian TV is mostly irregular appearance, with audio system, appearance arc system and other auxiliary facilities for hearing and vision, the overall appearance and effect of the construction will be greatly reduced.
Industrial LCD screens mostly use industrial special ports, such as RGB BNC color difference with self-locking mechanism interface and professional DVI-D video interface; while ordinary LCD screens such as LCD TVs do not have BNC self-locking color difference input interface and DVI-D interface ;
6. Control interface
The industrial LCD screen can be controlled by S232 serial port, and there are more than 200 open control passwords to adapt to various industrial environments. When it is convenient to use multiple monitors, it can control all display devices without using the remote control, and can assist with various industrial requirements such as timing startup, delayed startup, machine self-test and so on. Ordinary LCD screen such as TV display screen can also be controlled by S232 serial port. However, only the control commands possessed by the remote controller can be realized. Industrial control cannot be achieved.
7. Fanless architecture
The industrial LCD screen is designed with no mechanical exhaust fan to maintain air circulation and heat dissipation, thereby avoiding dust and fan noise problems caused by the mechanical exhaust fan. When the internal temperature rises due to unknown reasons, the display automatically controls the backlight system to maintain the temperature Below the maximum operating temperature. Ordinary LCD screens are not strictly required due to the application environment.