What are the wireless control methods of LED electronic screen

　　With the development of LED industry, outdoor media advertising has become more and more popular. With the perfect combination of technology and media, LED electronic screens can continue to maintain the form of outdoor advertising. From traditional LED billboards to monochrome screens, to today's full-color LED screens, all these can reflect dreams, technologies, trends, and fashion concepts.

　　Outdoor LED display

　　At present, outdoor LED electronic screens account for 80% of outdoor media advertising, becoming a new carrier of large-scale outdoor media advertising. Wireless control LED electronic screen technology has come out. What are the wireless control methods for LED large screen.

　　WIFI wireless control

　　How to do it: Install a landless controller or other wireless devices, and bridge with the existing wireless network to build a wireless LAN, so that the network controller card can easily integrate and control the wireless network.

　　Function: no wiring, easy to install and debug, fast data transmission.

　　Disadvantages: The communication distance is mainly the gain function of the bridge. The communication distance without lines is short, and the partition signal is weak or there is no signal. Suitable for places with short distance wireless signals. If the display area has a wireless signal cover, the LED electronic screen can be controlled by all computers in the internal network by connecting the wireless slave bridge connected to the control card to the wireless network.

　　Radio frequency wireless control

　　Working principle: One side of the RF module is located on the control computer, and the other side is located on the serial port of the control card. After installing the driver, the computer creates a virtual serial port to transmit data through this serial port.

　　Function: easy to install and debug, data transmission distance up to 300-1000 meters, no post use cost.

　　Disadvantages: The wireless band is not allowed for civilian use. This 433MHZ deployment is vulnerable to signal interference. The baud rate is not very low. The baud rate can only be 4800 or 9600. It is not recommended.

　　GPRS wireless control

　　Working mode: After the GPRS module is powered on, the dial-up Internet connection process is completed, and the data center server is connected. The client accesses the server through the client software and transmits information from the server. Features: easy installation and debugging, no distance limitation, information can be received in places with mobile phone signals, and the price is relatively cheap.

　　Disadvantages: China Mobile needs to install the GPRS module of the mobile phone card with a traffic package of at least 5 yuan and a certain monthly traffic cost. Limited by GPRS bandwidth, the transmission speed is slightly slow, and it is suitable for LEDLED electronic screen with single or double color and text playing.

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