Detailed explanation of working principle and technology of on-board LED display screen
Time:2018-11-28
Views:1596
The application of LED screen in traffic makes vehicle-mounted LED screen widely popular. The vehicle-mounted screen in streets and lanes also adds a lot of color to our daily traffic life. What are the main characteristics of vehicle-mounted LED screen?Below we do a simple analysis on LED brightness, power supply, protection measures and other technologies of on-board display screen.
I. LED brightness attenuation:
LED attenuation features, LED brightness is attenuation, there is a 10-70% attenuation rate in a year, the quality of the half-year brightness will be reduced by half, so that it is unable to see the display content.
Ii. Stable power system support:
The power supply of the car is powered by batteries. When the car starts, brakes and stops, a high pulse voltage will be generated. If the power system is not good, the display screen will be burnt down.
Iii. High stability and reliability:
Cars are always on the move and require high stability and reliability of electronic products.
Iv. Good anti-static measures:
Cars are easy to generate static electricity in operation, especially in the autumn electrostatic high voltage can reach thousands of volts, if there is no good anti-static measures, it is easy to damage IC and LED lights.
5. Suitable brightness:
Appropriate brightness;If the LED display is not bright enough, it will not be visible during the day, and the significance of installing the display screen will be lost.If it is too bright, it will affect the driving.
Vi. Ultra-large range transmission:
Can provide any place that has the network coverage of telecommunication operator.
Common operation modes of wireless on-board LED display are as follows:
1. Directly edit SMS messages to send messages to wireless SMS screen.This method is suitable for the small number of screens, to meet the needs of customers who send information anytime and anywhere.
2. Send information to the wireless short message display screen through the Internet, which is characterized by convenient editing information and no need to buy a short message sender.Suitable for customers with large number of screens and easy access to the Internet.
Iii. Use the computer to send information to the wireless short message display screen through the mobile phone transmitter.Its characteristic is;Edit information quickly and easily without having to surf the Internet.Suitable for customers with large number of screens and no Internet access.
The built-in GPRS module is the equivalent of Internet users, each time the power will be dynamically assigned an IP address.In this way, any computer connected to the Internet can be used to send information to the electronic display by using wireless LED electronic display software:
1. Users‘ computer terminals shall be connected to the Internet by wireless or wired means.
Ii. Users need to install wireless LED electronic display sending software when their computers are interrupted.
Iii. If the user establishes the service network, he/she shall apply for a fixed IP address and guarantee the service to be online in real time.
Iv. Information transmission through GPRS network, with low cost and good real-time performance, is suitable for the transmission of large-capacity text information or image information content.
5. The wireless pager screen has built-in pager receiver, which can receive and display information anytime and anywhere within the range of pager signal coverage.Information can be transmitted simply and timely by calling pager or by using wireless information publishing system.
The on-board LED display is convenient for unified management, and the built-in GPRS module allows the display to receive information anytime and anywhere.
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