Mobile Phone Wireless Control LED Display
The LED display is the perfect combination of technology and media. It can fully display the concepts of fantasy, technology, and fashion. It can be a new force in the new indoor and outdoor advertising. From traditional LED billboards to monochrome screens to today's full-color LED displays. With the development of the LED screen industry, the form of outdoor media advertising has become more and more trendy and fashionable. At present, outdoor LED display has occupied 80% of the outdoor media advertising field and has become a new carrier for large outdoor media advertising. With the coming of wireless control LED display technology began to popularize, let's take a look at some common wireless control LED display methods.
1. Mobile Phone Wireless Control via 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, the computer generates a virtual serial port and sends data through the serial port. Features: Easy installation and commissioning, data transmission distance can reach 300-1000 meters, no need to use for later use. Required equipment and price: RF transmission and acceptance module, about 350 yuan a pair. Support one-to-many transmission, that is, one sending module to multiple receiving modules. Disadvantages: The frequency band of the radio frequency is not allowed by the state. The batch of 433MHZ is extremely susceptible to signal interference. In this way, the transmission rate is not very low, and the baud rate can only be used up to 4800 or 9600. It is not recommended.
2. Mobile Phone Wireless Control via WIFI wireless control.
Working principle: By installing a wireless router or other wireless devices, it bridges with the user's original wireless network, builds a wireless local area network, and conveniently integrates 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 (on the display is best to choose the device that can change the antenna, so that it can effectively receive wireless signals), the price is about 100 yuan. Disadvantages: The communication distance mainly depends on the gain capability of the bridge. The communication distance of the wireless router is relatively short, and the signal of the partition wall is weak or no signal. Suitable for places with short-distance wireless signals. If there is wireless coverage in the area where your display is located, it is even simpler. You only need to bridge the wireless router connected to the LED display control card in the LED display to your wireless network. Control the display on any computer.
3. Mobile Phone Wireless Control via GPRS wireless control.
Working principle: After the GPRS module is powered on, the process of dial-up Internet access is completed, and the data center server is connected. The client accesses the server through the client software, and the server forwards the information. Features: easy to install and debug, 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 ~ 400 yuan. Disadvantages: GPRS module needs to install mobile phone card to dial up the Internet, and it will generate a certain amount of traffic cost every month (like China Mobile's minimum 5 yuan traffic packet can meet the demand). Limited by the GPRS bandwidth, the transmission rate is slightly slower, so it is more suitable for the led display of the main dual-color playback text.
4. Mobile Phone Wireless Control via 4G full Netcom wireless control.
Working principle: basically the same as 3G/GPRS. Features: 4G full Netcom (China Mobile, China Unicom, China Telecom full range of support), fast transmission rate, fully real-time control, send commands can respond to relevant controls in an instant. Disadvantages: When the amount of data sent is relatively large, the traffic cost is relatively large, and it is recommended to open the traffic package.