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Wireless RF Solution for LED Display Screens

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Our company has successfully launched solutions for LED screens spot to spot and one spot to multi-spots based on RF communication technology. At present, RF technology has been widely used in many fields including business, industry, transportation, logistical management, medical insurance, finance and teaching, etc. RF is a kind of wireless telecommunication technology, which is mostly used for standard IEEE802.11B at present. 24GHz made the communication speed between server and terminal reaches to 12Mbps.

Based on the wireless channel transmission medium, RF is one of the key technologies that can make moving communication become true, it provides fast, convenient and timely information with characteristics of networking quickly and communicating flexible.

LED Screen RF System Structure

The system structure for RF wireless LED screen solutions is shown in the below image:

System structure for RF wireless LED screen solutions

  1. Connecting users’ PC with RF modules by serial port line 232.
  2. Connecting control card with RF modules by serial port line 232.
  3. Connecting control card with LED display screen by general adapter plate and flat cables.

Compositions of LED Screen RF Main Hardware and Software

LED Screen RF Hardware

 

  1. RF Modules
  2. LED display screen control card (our company’s M-series control cards)
  3. General adapter plate (HUB: used for connecting display screen with control card)
  4. LED display screen
  5. Users’ PC that can control LED display screen (need to install LED Editor Software)

 

LED Screen RF Software

 

  1. Name of LED display screen control card: LedEditor.exe
  2. RF modules configuration software (factory default)

Interface screenshot of LED Editor Software is shown in the image below:

LED Editor Software Screenshot

Configure RF modules for LED Screens

RF modules connecting with control card (factory default configuration has completed, connecting it with control card directly), as shown in the image below:

Configure RF modules for LED Screens

Factory default, you do not need to configure anymore, if you want to change wireless RF module configuration, please refer to notes: methods of changing wireless RF module configuration.

Required conceptions introduction of RF

Due to the mutual communication RF modules work in the same frequency point in the way of semi duplex communication, it should ensure to avoid data collision between different RF.

Example 1

Under stand-alone mode condition, one PC controls one control card connecting with RF, the two RF modules communicate with each other in the way of ask and answer, at this moment, it must be ensure that there isn’t other control cards working with the same RF.

Example 2

Under multi-mode condition, one PC controls multiple control cards connecting with RF. With configuration ID list, PC software will communicate with one by one through ID list so as to avoid data collision.

One PC controls one control card connecting with RF module

Configuration steps of Led Editor as follows: click “Options” on menu → Software Setup → Communication parameters then select “stand-alone mode” RF. As shown in the image 21-4 below:

One PC controls one control card connecting with RF module

After this, users can connect RF with the LED screen just as simple as to connect a local serial port with a LED screen by LAN. As shown in the image below:

Connect RF with LED Screen

One PC controls multiple control cards connecting with RF modules

Configuration steps of Led Editor are as follow: click “Options” on menu → Software Setup → Communication parameters then select “multi-mode”and input password[888]. As shown in the image below:

One PC controls multiple control cards connecting with RF modules

Communication: COM (485/RF) then configures relative values and ID list, as shown in the image below:

COM (485/RF) then configures relative values and ID list

Configure ID list as shown in the image below:

Configure ID list

Users can search the LED control card ID by the following steps: Menu → Options → Hardware Setup, as shown in the image below:

Search LED control card ID

Screenshot of sending program by RF under multi-mode condition, as shown in the image below:

Sending program by RF under multi-mode condition

Notes: Configuration introduction of RF modules

  1. There are some differences between RF modules configuration programs of different factories, for details please refer to factory configuration documentation of wireless RF modules.
  2. Serial port baud rates of control card’s RF and RF wireless modules must keep consistent with each other. Following these steps, users can configure control card’s serial port baud rate: click “Options” on menu → Hardware Setup, as shown in the image below:

Serial port baud rates of control card’s RF and RF wireless modules