How much do you know about "Common Knowledge" of LED pole screens?
Author: Huajiang
Date: 2023-09-08 16:27:10
LED pole screens not only can display multimedia content such as audio, video, and text but also offer Wi-Fi internet connectivity, monitor road video information, display environmental data such as temperature, humidity, wind direction, wind speed, PM2.5 levels, and provide convenience services and other information, achieving both commercial and public service functions. People can promptly monitor changes in their surroundings and make corresponding adjustments in their daily lives and production.
Why is a minimum brightness of 7000CD necessary? (Using large chips)
(1) Ensures a 10-year lifespan due to slow decay and a large decay space.
(2) Increases adaptability to different environments and expands the usable brightness range.
(3) Adjusting to around 5000CD is the most energy-efficient, generates less heat, and enhances stability.
Why is the systematic adoption of energy-saving technologies important? (Energy-saving power supplies, 3.8V drive, 2053 driver IC, automatic brightness adjustment, remote hard power-off)
(1) Energy-saving reduces heat generation, improving stability.
(2) Energy-saving reduces operational costs, lowering electricity consumption by 40%.
(3) Greatly reduces project implementation obstacles (costs of cables, capacity expansion, pipe penetration costs, road repair costs).
Why should the interior of the casing withstand temperatures above 80 degrees Celsius?
LED pole screens are used on public roads, mounted on lamp posts, and have small dimensions and full metal structures. Even when not in operation, the interior temperature can exceed 60 degrees Celsius. Therefore, withstanding temperatures of 80 degrees or more is a basic requirement for LED pole screens.
How to handle high-temperature resistance to 80 degrees Celsius?
(1) Ingeniously layout sending cards, receiving cards, power supplies, and fans to facilitate heat convection.
(2) Arrange internal wiring in accordance with European standards (EN), ensuring the shortest wire length and better heat convection.
(3) Enhance heat conduction with large intake and exhaust vents, orderly internal layout, and additional fans.
(4) Components like power supplies, sending cards, receiving cards, and cables must be capable of withstanding temperatures close to 80 degrees. Otherwise, they may fail or experience frequent issues.
(5) Sending cards are the processing center of the entire device, so the load area doesn't need to be too large; 1GB of memory is sufficient, but capacitors must be industrial-grade.
(6) Increase power supply capacity as 30 degrees offers a power conversion efficiency of 90%, which drops to 60% at 60 degrees. Therefore, having a 30% margin reduces power supply heat generation.
Why is a photosensitive resistor (light-dependent resistor) necessary?
LED pole screens are installed on public roads, and their brightness can affect drivers' vision. Automatic brightness adjustment is crucial and requires extensive practical experience with high sensitivity, both manual and automatic controls. Poor adjustment could lead to project suspension.
Why use temperature-controlled fans?
(1) For energy efficiency.
(2) To reduce the intake of dust.
(3) Fans are mechanical components with limited lifespans, and temperature control ensures they operate only when necessary.
Why should network cable connectors be securely fastened?
LED pole screens are often located on major traffic routes, where wind and heavy vehicles can cause connector looseness or oxidation.
Why is remote hard power-off necessary?
(1) For energy efficiency.
(2) For easier management.
(3) To extend the equipment's lifespan.
Why is the appearance a crucial design element for LED pole screens?
(1) Smart streetlights are expensive, and they contribute to the modernization of cities.
(2) An aesthetically pleasing design gives smart streetlights a more technological and modern look, making them appear valuable.
Why is seamless and synchronous switching without delay a key technological requirement?
(1) In the same scene, there may be hundreds of LED pole screens, and synchronized content switching is necessary to avoid disrupting the cityscape.
(2) LED pole screens are also part of architectural lighting projects.
Why is a waterproof board added to the top of the LED pole screen casing?
(1) Without compromising aesthetics, adding a waterproof board significantly enhances the overall waterproofing of the LED pole screen.
(2) Using stainless steel for the waterproof board prevents bird droppings from sticking and corroding the surface of the casing.
Why are LED pole screens typically equipped with sound systems?
(1) Smart streetlights are part of urban management and can be used for emergency audio broadcasting.
(2) The sound system for LED pole screens needs to be custom-made, waterproof, and capable of reaching a certain propagation distance.
(3) Sound broadcasting is required in scenarios such as tourist areas, schools, residential neighborhoods, commercial districts, and mixed-use complexes.
(4) LED pole screens are part of smart cities and often involve audio signals in addition to visual content. Although they may not be used immediately, audio capabilities could be utilized in the future.
How to ensure the software security of LED pole screens?
(1) Protection against hacking and insider threats through a three-level review process.
(2) As public facilities, LED pole screens must be systematically secured, including 16-bit encryption, email verification, operation logs, and secure servers.
What is the wind resistance and waterproof rating for LED pole screens?
(1) Wind resistance should be at least level 12, and there should be testing reports.
(2) Waterproofing should be at least IP65 or higher.
Why do LED pole screen suppliers need patent protection?
(1) LED pole screens are in the early stages of development, and offering technology that infringes on someone else's patents could lead to legal disputes.
(2) In the future, countries may place strong emphasis on protecting intellectual property rights. Lack of patent protection could result in significant losses. Patents cover aspects such as software, appearance, features, and should be applied for priority to ensure no future issues.
Why is the installation design of LED pole screens standardized?
For any electronic device, apart from the quality of the device itself, standardized installation is crucial. Therefore, standardized installation design, packaging, component compatibility, and software settings for LED pole screens are essential to ensure stable operation in the long term. Many issues can arise during the installation process.
Why do suppliers need to have their own servers?
(1) Suppliers must have their own servers as it demonstrates their technical expertise and experience. Servers are a fundamental proof of professionalism for suppliers.
(2) When customers make smaller purchases, suppliers need their own servers for efficient after-sales service. Relying on third-party servers is not a long-term solution.
Why is aluminum alloy used for LED pole screens?
(1) Aluminum alloy is used to minimize weight.
(2) Aluminum alloy provides an attractive appearance.
Why should LED pole screens be stocked in advance?
(1) Stocking in advance allows for a quick response to customer projects.
(2) Having stock indicates that the corresponding model has been finalized, drawings and components have been confirmed, suppliers have been selected, the production line has accumulated experience, and prices are not artificially inflated.
Why can't LED pole screens use conventional screen technologies? LED pole screens have small sizes but are produced in large quantities, and they are not conveniently located for maintenance, so problems can have a significant negative impact.
(1) Conventional screen materials may be cheaper but have higher power consumption.
(2) Conventional screens have fewer power supply and fan configurations, while LED pole screens have a double configuration of fans.
(3) Conventional screen parameters are not high enough to meet the requirements of LED pole screens for brightness, energy efficiency, weight, functionality, craftsmanship.
(4) LED pole screens are part of smart cities and involve big data collection and analysis as one of their functions, in addition to requirements such as brightness, energy efficiency, weight, functionality, craftsmanship, and features like audio, Wi-Fi, automatic brightness adjustment, synchronous switching, probes, energy-saving, temperature control, monitoring, 4G, and more.