5 Kinds of LED Display Wireless Control Way

led display screen is the perfect combination of technology and media, it can show the dream, technology, fashion and fashion ideas to the fullest extent. It can completely become the new forces of the dance, the new indoor large-scale LED screen, outdoor advertising forms continue to Appeared, from traditional LED billboards, to monochrome screens, to today's full-color LED screens. With the development of the LED industry, outdoor media advertising has become more trendy and fashionable.

The current outdoor LED screen has occupied 80% of the outdoor media advertising field, becoming a new carrier for large-scale outdoor media advertising. Followed by wireless control of large-screen LED technology has begun to popular, here we take a look at 5 kinds of LED display wireless control way.

WIFI wireless control

How it works: By installing a wireless router or other wireless device, it bridges with the user's existing wireless network, builds a wireless LAN, and easily integrates the network control card into the wireless network for wireless network control.

Features: no wiring, easy installation and debugging, data transmission speed.

Required equipment and price: Bridge, less than 800 yuan; wireless router (preferably on the display screen is to choose exchangeable antenna equipment, so you can effectively receive the wireless signal), the price of 100 yuan.

Disadvantages: The communication distance mainly depends on the gain capability of the bridge, the communication distance of the wireless route is relatively short, and the signal of the partition wall is weak or not. Suitable for places with wireless signals over short distances. If your display area is covered by wireless signals, it's even simpler. Simply connect the wireless router connected to the control card in the display to your wireless network, and you can connect to any computer in the internal network. On the control of the led display.

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 serial port of the control card. After the driver is installed on the computer, a virtual serial port is generated and data is sent through the serial port.

Features: Easy installation and debugging, data transmission distance up to 300-1000 meters, no use for later use.

Required equipment and price: RF send and receive module, about 350 yuan a pair. Supports one-to-many sending, ie, one sending module to multiple receiving modules.

Disadvantages: The radio frequency band, the state allows civilian use is not much, this batch of 433MHZ, extremely vulnerable to signal interference, and the transmission rate is not very low in this way, the baud rate can only be used to 4800 or 9600, is not recommended.

GPRS wireless control

Working principle: After the GPRS module is powered up, it completes the process of dial-up Internet access, connects to the data center server, the client accesses the server through the client software, and the server forwards the information.

Features: Easy to install and debug, there is no distance limit, as long as there is a cell phone signal, you can receive information, and the price is relatively cheap, generally in the range of 200 to 400 yuan.

Disadvantages: GPRS module needs to install a mobile phone card to dial-up Internet access, every month will have a certain amount of traffic costs (like China Mobile's minimum 5 yuan flow packet can meet the demand). Due to the limited bandwidth of GPRS, the transmission rate is slightly slower, so it is more suitable for the LED large screen with single and double colors to play text.

4G Netcom Wireless Control

Working principle: basically the same as 3G/GPRS.

Features: 4G Netcom (full support of China Mobile, China Unicom, China Telecom), fast transmission rate, complete real-time control, and sending commands can instantly respond to relevant control.

Disadvantages: In the case of a large amount of data to be sent, the traffic is relatively expensive. It is recommended to open a traffic plan.

3G (WCDMA) Wireless Control

How it works: The 3G module is also connected to the data center server through a wireless network. Customers directly log on to the global simulcast cloud platform to publish the program and send it directly from the server to the control card.

Features: WCDMA signal stability, basically no data loss during program transmission. Compared to GPRS, the speed is faster. It can transmit pictures or video and is more suitable for full-color LED display.

Disadvantages: China Unicom's signal coverage is not as high as that of China Mobile, and there may be cases where it is impossible to connect to the Internet in individual remote areas.

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