LED electronic screen is the perfect combination of led visual technology and advertising media. It can be a new indoor large-scale LED electronic screen and outdoor advertising form of new forces of dancing beauty. From the traditional LED billboard, to the monochrome character screen, to today’s LED electronic screen.
With the development of LED industry, outdoor media advertising has become more and more fashionable. What are the control methods of LED electronic screen wall?
At present, the outdoor LED electronic screen has occupied 80% of the outdoor media advertising field, becoming a new carrier of large-scale outdoor media advertising. Then wireless control LED electronic screen technology began to be popular. Next, we will take stock of several common wireless control LED electronic screen methods.
LED electronic screen
WiFi wireless control
Working principle: through the installation of wireless router or other wireless equipment, bridge with the user’s original wireless network, build a wireless LAN, and conveniently integrate the network control card into the wireless network for wireless network control.
Features: no wiring, easy installation and debugging, fast data transmission.
Required equipment and price: bridge, less than 800 yuan; wireless router (it is better to choose the equipment with replaceable antenna for application on LED electronic screen, so as to effectively receive wireless signal).
Disadvantages: the communication distance mainly depends on the gain ability of the bridge, the communication distance of the wireless route is relatively short, and the signal of the partition wall is relatively weak or there is no signal. It is suitable for places with wireless signal in short distance. If there is wireless signal coverage in the area where your LED electronic screen is located, it is simpler. Just bridge the wireless router connected with the control card in the LED electronic screen to your wireless network, and you can control the LED screen on any computer in the internal network.
RF wireless control
Working principle: one end of RF module is connected to the control computer, the other end is connected to the serial port of the control card. After the computer installs the driver, a virtual serial port is generated and data is sent through the serial port.
Features: convenient installation and debugging, data transmission distance up to 300-1000m, no cost for later use.
Equipment and price required: RF sending and receiving module, about 350 yuan per pair. Support one to many sending, that is, one sending module to multiple receiving modules.
Disadvantages: there are not many radio frequency bands allowed by the state for civil use. The 433MHz batch is extremely vulnerable to signal interference, and the transmission rate is not very low. The baud rate can only be used for 4800 or 9600, which is not recommended.
GPRS wireless control
Working principle: after the GPRS module of LED electronic screen is powered on, it completes the process of dial-up Internet access, connects to the server of the data center, the client accesses the server through the client software, and the server transmits the information.
Features: convenient installation and debugging, no distance limit, as long as there is a mobile phone signal, you can receive information, and the price is relatively cheap, generally in the range of 200-400 yuan.
4G all network wireless control
Working principle: basically the same as 3G / GPRS.
Features: 4G all Netcom (supported by China Mobile, China Unicom and China Telecom), with fast transmission speed, fully realize real-time control, and send instructions to respond to relevant control instantaneously.
3G (WCDMA) wireless control
Working principle: the 3G module is also connected to the data center server through wireless network, and the customer directly logs in to the global network cloud platform to release the program, which is directly sent to the control card by the server.
Features: the WCDMA signal is stable, and there is no data loss in the process of program transmission. Compared with the LED electronic screen GPRS, the speed is faster, and it can transmit pictures or videos, which is more suitable for the LED electronic screen.
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