On-site investigation matters for full-color LED display before sale_full-color LED display manufacturer|Huaze Optoelectronics
The popularity of full-color LED displays is getting higher and higher and has become an important advertising carrier. Everyone knows that LED displays are customized products. They are not a simple buying and selling process like general electronic consumer products. The implementation of a complete set of system design plans, from pre-sales design including other related industries to after-sales construction, installation and maintenance, often requires merchants to complete. The following editor will share with you the matters needing attention in the field survey before the LED display sales: 1. Preparation before the field survey: You need to communicate with the user before departure to understand the specific requirements of the user: 1, the type and size of the led display; 2 , Installation environment; 3. Display content and method; 4. Communication method. 2. On-site survey content: 1. The state of the wall where the LED display is installed, the installation method (inlaid, floor-standing, suspended, wall-mounted, support, pillar) and force. And according to the specific size of the display screen, confirm whether there are obstacles at the installation site hindering the installation of the display screen. In the case of mosaic installation, whether the reserved installation slot is suitable; if the wall has decorative partitions, you must ask the user about the condition of the wall; in the case of column screen installation, be sure to understand the geological conditions. (If there is mud and sand at the bottom of the geological layer, it will lead to the risk of sinking or even collapsing of the column and the LED display screen for a long time. Do not look at it like a horse.) 2. Measure the screen size: measure the screen For the specific size of the length and height, products with large dot pitches can be recommended for large areas, and products with small dot pitches for relatively small areas are recommended to save customers as much as possible while ensuring the viewing effect of customers. The tools that need to be carried, such as tape measure or laser ruler, do you need scaffolding or user-provided scaffolding, and whether the computer is provided by the user. 3. Understand the control position of the display screen and whether the communication line is unblocked. The length of the communication line required on site, and whether there are other devices with lines that need to be connected to the display control terminal or understand the switching method of the on-site signal channel; if the user does not understand anything, at least need to understand the user’s application requirements, especially the theater Class users. If the user has already wired, ask whether the length and quantity of the wiring are appropriate; the normal synchronization system should use a super five network cable should be less than 120 meters, and the length of the non-super five network cable should be lower; if the number is not enough, the corresponding number of network cables must be increased. If it is too long, you must use a suitable optical cable. Use multi-mode fiber within 500 meters, and use single-mode fiber if it exceeds 500 meters. Regardless of whether it is the network cable or the number of optical fibers, there must be a spare. 4. On-site power supply situation: the capacity of the computer room or AC transformer, whether the cables need to be re-arranged, or whether the wire diameter of the laid-out cables meets the requirements; if it is single-phase electricity, whether there is a grounding wire; if it is three-phase electricity , Whether it is three-phase five-wire. If you need to re-wiring, you need to accurately measure the length of the power cord on site. 1) Power supply: The power consumption of outdoor full-color LED displays is relatively high. It is necessary to provide sufficient power distribution equipment to see whether the customer can provide power on site. On the power distribution cabinet. 2) Control room: depending on where the control room (computer) is and the distance from the screen, the network cable can be used for transmission not exceeding 100M. If the distance is 100-500M, multimode optical fiber is used. Single-mode fiber is used above 500M. 5. The external environment of the site: Do you need to pay attention to moisture prevention when installed indoors, and whether you need to pay attention to the details of waterproof and lightning protection measures when installed outdoors; whether the location is close to the sea, close to a chemical plant, and what is the degree of air salt, alkali, and acid. In addition, outdoor screen users need to observe the viewing distance of the audience, the height of the screen, and the direction of the sun. 6. Use the camera to take photos of all situations encountered at the scene as far as possible, and shoot in place with different angles and details. 7. Whether the user has special requirements, whether it can be realized if there are special requirements, and the difficulty of the project. 8. If a business is responsible for the construction, it is necessary to go to the local area to understand the specific location of the steel market and building material market. Special considerations for outdoor LED displays: 1. Outdoor LED displays are often exposed to the sun, rain, wind and dust, and the working environment is harsh. If electronic equipment gets wet or severely damp, it can cause short circuit or even fire, cause malfunction or even fire, and cause loss. 2. Outdoor LED displays may be attacked by strong electricity and magnetism caused by lightning. 3. The environment temperature changes greatly. When the display screen is working, a certain amount of heat is generated. If the ambient temperature is too high and the heat dissipation is poor, the integrated circuit may not work properly, or even be burned, so that the display system cannot work normally. If the work process is not arranged in advance, a business trip to a remote city for on-site survey work will have a significant impact on the installation of the led display. At least, it will cause a certain amount of trouble to users and affect the company's service standards. Not all LED display screens must be inspected on site by the merchant. If it is really inconvenient to go to the site, according to the above situation, after selecting the LED display screen and control system, it needs to be carried out by the user when conditions permit. On-site survey, or the merchant can learn about the on-site situation through other channels.