Suzhou LED display P2.5 indoor full-color high brush control mode flexible

Description :

　　Suzhou LED display P2.5 indoor full-color optional control methods:

　　How many control and transmission methods are there for LED display screens

　　1、 USB flash drive is the simplest control method, and its main feature is that it does not require wiring. The content to be displayed can be directly sent to the storage card through the USB port on the display control card, which is convenient and fast. The disadvantage is that the content to be sent needs to be sent to the USB flash drive on the computer side, which is asynchronous transmission and cannot transmit the content seen or obtained. The storage of content is limited by certain memory, including text and video.

　　2、 Network port synchronous screen, using Ethernet cable transmission, can quickly transmit graphics, text, and video within 100 seconds of synchronization. It is synchronized with the network, but the transmission distance is limited. In this case, fiber optic transmission can be used for long-distance transmission. Single mode can transmit 1000 meters, multi-mode can transmit thousands of meters or even farther, and the signal is relatively stable and reliable, with certain requirements for wiring.

　　III RF wireless control; Working principle: One end of the RF module is connected to the control computer, and the other end is connected to the control card serial port. After installing the driver program on the computer, a virtual serial port is generated and data is sent through this serial port. Features: Easy installation and debugging, data transmission distance can reach 300-1000 meters, and there is no cost for later use. Required equipment: RF transmission and reception module. Support one to many sending, that is, one sending module for multiple receiving modules. Disadvantages: There are not many radio frequency bands allowed by the government for civilian use. The batch of 433MHz is extremely susceptible to signal interference, and the transmission rate of this method is not very low. The baud rate can only be used at 4800 or 9600, which is not recommended.

　　4 WIFI wireless control; Working principle: By installing wireless routers or other wireless devices, bridging with the user's existing wireless network, building a wireless local area network, and conveniently integrating the network control card into the wireless network for wireless network control. Features: No wiring required, easy installation and debugging, fast data transmission speed. Equipment required: bridge, wireless router. Disadvantages: The communication distance mainly depends on the gain capability of the bridge. The communication distance of wireless routing is relatively short, and the signal on the partition wall is weak or non-existent. Suitable for places with wireless signals over short distances. If there is already wireless signal coverage in the area where your display screen is located, it is even simpler. Just bridge the wireless router connected to the control card inside the display screen to your wireless network, and you can control the display screen on any computer in the intranet. LED electronic display screen

　　Five GPRS wireless control; Working principle: After the GPRS module is powered on, it completes the process of dial-up internet access and connects to the data center server. Customers access the server through client software and the server forwards information. Features: Easy installation and debugging, no distance restrictions, as long as there is a mobile signal, information can be received. Disadvantage: The GPRS module needs to be installed for dial-up internet access, which incurs a certain amount of data usage fees every month. Due to the bandwidth limitation of GPRS, the transmission rate is slightly slower, so it is more suitable for LED displays that mainly play text in single or dual colors.

　　6、 3G (WCDMA) wireless control; Working principle: The 3G module is also connected to the data center server through a wireless network. Customers can directly log in to the global broadcasting cloud platform to publish programs, which are then sent directly to the control card by the server. Features: WCDMA signal is stable, and there is basically no data loss during program transmission. Compared to GPRS, it has a faster speed and can transmit pictures or videos. It is more suitable for full-color screens. Disadvantage: China Unicom's signal coverage is not as high as that of China Mobile, and there may be situations where the network cannot be connected in some remote areas

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