Application of wireless LED display screen

Application of wireless LED display screen

Wireless LED display screen is a kind of brand-new information media information, once launched, it is widely accepted social group, the "flow" display and the characteristics of the network information release more advertising, become a kind of new advertising media.

According to the use of technology can be divided into the WLAN, GRPS (WCDMA), and other wireless communications:

1.    Such as buildings, plant, streets, inconvenient or wiring

SuchLED displays is area of medium full-color displays, more need to release information in real time. For such display, if the condition allows, the wireless LED display we recommend using WLAN communication methods in the first place. This is because, compared with the GRPS communication way, WLAN need only wireless network card can be realized. Late cost is very low, and requires no additional traffic fees.

2.    Multiple in different location of the LED display, need to unified management, centralized, and the wiring is not convenient:

This application found in schools, institutions, government departments, streets, etc., such as Shanghai sea the LED display on both sides of the street, each separated by about 10 meters have an LED display screen, the whole street several hundred yuan display, unified management.This kind of display because of far distance control center, this kind of LED display for using the GPRS wireless communication way.

3.    Mobile LED display

The most typical application is vehicle display, especially the LED display on the taxi.Due to the LED display has been with the moving of the car and mobile, combined with the need to focus on management, wiring is unlikely.This kind of LED display need to adopt the GPRS wireless communication way.

Wireless WLAN LED display by using more for synchronous control system, the mode of GPRS is given priority to with asynchronous control system.

Basic knowledge of Stage led screen

Big stage led screen can divide one picture into multiple video picture. The led screens were independent, and can be any combination.

Broadcast related background, big screen can realize area display according to performance requirements, and can realize superimposing. And can be realized by superposition, background images according to the same picture with video signal processor played or synthesis, can be shown on the characterization, play, or call waiting to do text scrolling playing, can level video picture screen, also can lift up and down into words, personality video images, lighting, landscaping stage background and stage ground, through the software design and control system meet the demands of the other, advantage, can adopt frame structure design, tear open outfit is convenient, reliable, easy to maintain application occasions to major entertainment and large activities.

Stage LED large screen segment

1.    The main screen: generally speaking, the largest of the set in the middle of the stage background LED large screen can be said as the main screen, the vast majority of cases, it is a square, can be a square, or rectangular. Due to the home screen display of the content is more important, so it is to compare the imaging effect of good, also require relatively large pixel density. The home screen is mainly the technology more mature stage P4, P5, P6.

2.    secondary screen: vice screen is usually set up on either side of the home screen, foil is used for the contents of the home screen play, so it plays most of the content is more abstract, such as dancing fireworks, flashing box and so on. Therefore, vice screen pixel pitch will be bigger, generally USES the P7.62, P8, etc. Because many parts are the contents of the screen and play with mesh, also known as color screens.

3.    Video expansion screen: general concerts, large stage performances will be relatively large area, causing some places are not clear on the stage performance, the sides will be placed on the big screen, to live on the scene of the stage, the screen can be called a video to expand, the specification is often similar to the home screen.

In some KTV, bars, dance halls and other places will also be used in the stage of some shapes led large screen, the abnormity of led large screen is often based on the overall structure of the environment, places in led large screen transformation, on the basis of their specifications can be customized according to the actual situation, make modelling more changeable, let the place environment to a new level, give a person a kind of the feeling of dreaming.

LED SHARK Encapsulation

Shark LED, is one type of encapsulation mode, square shape, transparent resin encapsulation, four pins, there is a lack food led in cathode.

Shark are defused LED, lighter angle is greater than 120 degree, with high luminous intensity, and can bear larger power. Because of its superiority display performance, was introduce to LED encapsulation by some companies.

Advantages of these kind led screen encapsulation:

Shark series display, is a 3in1 DIP lamp, which is between traditional DIP and indoor SMD tech. compared with traditional outdoor screen made of 246, 346 lamp, the brightness of the SHARK series 5353 is high, white balance consistency is wonderful, big Angle of view, red, green and blue wick droop synchronization, gold wire, low failure rate characteristics, these are piranhas series one of the biggest bright spot. Completed by piranhas 5353 full-color displays more than outdoor protection grade reaches IP65, from is/side look, eliminating 246, 346, 546, lights, have not been able to solve the phenomenon such as "flower screen spots". Cooling is more superior to the outdoor 3528, 5050 and commonly used table lamp beads made of stick a triad. According to industry insiders said, outdoor triad has been inserted in the light of market prospect than traditional into the lamp and table is more significant.

Application:

Now Shark LED get more and more attention, because it better than f 5 mm LED to heat dissipation, large Angle, light failure is small, long service life. SHARKS are well suited for line lamp, back light box and large font of light source.

Because line bar lamp is generally used as the city high-rise buildings, and the back light boxes advertising screen and large font lights are placed high up, if the LED is not bright or dim, its maintenance is difficult. Compared with f5mm led lamp, Shark led with well heat dissipation, its light failure is small, long service life, so use of time is longer, also can save considerable maintenance costs.

Solution of all kinds of broken led screen

Outdoor advertising led screen

Defective pixel is the most common problem of LED screen, which means black points appeared during the working of the led screen. Other problem include whole screen can’t work, parts of led screen is not bright, whole screen crash, parts crash, Totalise etc. now aimed at these problems, simple introduce the solutions:

1.    Output problem

(1)  Check whether the line of the output interface to the signal output IC connection or short circuit

(2)  Check whether Clock latch signal output is normal

(3)  Check whether the last driver IC output data between the mouth is connected to the output interface of data port or short circuit.

(4)  Check whether the output signal is mutually short circuit or short circuit to ground

(5)  Check whether the output flat cable is well

2.    whole screen bright but one line or few line do not bright

Detection the circuit between 138 and 4953, and tell whether it is circuit break, virtual welding or short circuit. 

3.    Whole screen do not bright

(1)  Check whether the power supply and signal lines connect well

(2)  Check whether the test card is identified interface，Red light flashing does not identify test card, check whether the lamp panel is power supply with test card, or light board interface has signal and short circuit identification interface

4. Oblique scan, a regular interlaced not bright, show scenes overlap

(1) Check A, B, C, D, if there is A disconnect between signal input port to 245 or virtual welding, short circuit.

(2) Test 245 corresponding outputs A, B, C, D and whether or virtual welding, open circuits between 138.

(3) Test A, B, C, D between each signal is short circuit or A signal with A short circuit

5．Display disorder, the output signal to the next piece of board is normal

 Test 245 corresponds to the STB latched output connected to the driver IC latch end whether or signal is short circuit to the other line.

6.    whole screen bright, have one row or few rows do not birght

On the module control pin in the column, whether measured and drive IC (74 hc595 are needed/TB62726) output terminal connection.

7.    A single point or single highlighting, or the entire line highlighting, and is not controlled

 (1) Check whether the column with the power to short circuit

 (2) to test whether the line show circuit with positive of the power

 (3) replace the drive IC

8.    display disorder, output unnormal 

(1)    Testing the clock CLK latch STB signal is short circuit

(2)    Testing the clock signal is short circuit to the other line

9.    display lack of color

(1) Check whether the data end of the 245 of the color with input and output

(2) Test the color data signal is short circuit to the other line

(3) Detecting the color of the driver IC level even data between whether there is open circuit or short circuit, virtual welding

10. Screen dithering, have stripes

Check the connection of computer common ground wire is loose, or whether the communication cable is loose. If the operator cannot determine the cause of the problem, or the computer is not very understand, don't open the case, can be dealt with again after contact with the LED display manufacturer. 

In summer, how to choose radiating facility for LED screen

Outdoor led display screen

In summer with high temperature, people not only need to beat the measures are taken, as the most popular outdoor display devices, LED display also need cooling purposes to work properly.So, how can we choose cooling equipment for LED display? Due to the LED display installation area, area size is different, different installation way also is not the same, choose the equipment according to the actual situation and decide, specific plan is as follows:

1．If your screen size is within 20sqm

We suggest you do not use air conditioner, if possible, just need use two drought fan.

2. If your screen size beyond 20sqm

A.  If you display installation location is near the wall, just to look at the screen can stick out, if can protrude metope one meter position, suggest you choose fan according to the size, the fan is installed in the upper part of the side of the screen, in turn, displaces, if you buy the screen for 80 square ph16 outdoor led fullcolor, that means you buy fan to 6 units of around 600 mm diameter axial flow fan, the fan is the extraction of the outside, and the cooling fan to ensure that there is network, in order to prevent the technical personnel in the maintenance of maintenance screen display when other things sucked through the clothes according to personal injury, in order to waterproof, aluminous model board without the fan outlet on the aluminum alloy blinds.

Hang a wall display screen can also be installed air conditioning, make sure air conditioning host a placement, does not affect the overall appearance of of wall.The choice of air conditioning is required, one of the most commonly used is 1.5 P, 2 P and 3 P air conditioning, the most northern city of 12 square 1 P air conditioning calculation;The southern city of 9 square 1 p air conditioning is calculated. If the area of outdoor led display screen is bigger, air conditioning will go to the factory directly, if go to the store to buy the area is not large, but there are calls compensation function displays the cooling air conditioning.

B. If the LED display installation way is the pillar, the best fan is used to heat, fan installed on the big screen on the back of aluminum-plastic plate, best to up, so that when it rains in the form of rain of make it shutter not into the screen inside, if is a double column, will in the intermediate position of the double column several shutter, arranges the window is the air inlet, the above is the vent fan, so form a complete air convection makes the effect of heat dispelling better.
    If required by you to install air conditioning, this is no problem, to increase the purchase cost and use cost, the cooling effect will be worse than the fan.There is a problem if you want to install air conditioning, must want to consider a problem is the machine in what place, it is hung on columns or hanging on the back, whether it can ensure the beautiful appearance.