How can I control my outdoor LED displays?
After years of improvement,outdoor LED displays manipulate era is more and more superior, and has been widely used in many industries at home and abroad. Thus far, led shows have reached the extent of extremely-high brightness full-color video show, which is incomparable to standard liquid crystal outdoor LED displays. And led display has robust water-proof, dustproof, moisture-proof and other traits, even in negative outdoor conditions, can also be used nicely. Led display has correct region ductility, lcd vicinity is just too massive to attain seamless sewing, led show can be arbitrarily prolonged, and seamless sewing. And lcd plasma display screen light flux decay fast, typically run about one and a half of years need to be replaced, however led show beneath the equal running conditions for as a minimum five years no problem. Based totally on this, it is specially necessary to perform sensible manage of big out of doors led display screen. I. Sensible control approach of huge outdoor LED displays
1, outdoor LED displays drive circuit manage
In comparison with the conventional fluorescent lamp electronic ballast, the primary feature of the led display driver circuit is to convert the ac voltage supplied via the strength deliver into dc voltage for the use of the led show. From a physical point of view, the virtual version on theoutdoor LED displays be represented with the aid of the following components: on this formulation, vturn-on represents the starting voltage of the led show, rs represents the slope of the voltammetry curve, t represents the ambient temperature, and represents the temperature machine of the forward voltage of the led show. For big outdoor LED displays, it’s miles -2v/℃.
From the above system, it could be seen that even a small trade in the ahead voltage of the outdoor LED displays may additionally result in a large change in the contemporary of the led display. Similarly, led show operating environment temperature, getting old time and other elements can even have a remarkable effect on the electrical properties of led display. But for huge outside led shows, light output and present day are positively correlated. If the driver circuit in the enter voltage or environmental temperature adjustments, the contemporary should be strictly managed to ensure the reliability of led show operation. In any other case, it’s far vulnerable to failure and will reduce the service lifestyles of the led show.
The complete led show pressure circuit is composed of three parts, along with: contemporary isolation transformer, ac-dc rectifier, modern-day restricting resistance and so forth. Amongst them, the primary position of the transformer is to isolate and exchange the voltage of the led display, and the present day proscribing resistance is used to govern the strolling current of the outdoor LED displays. Its resistance cost is a ways greater than the resistance of led display itself, to be able to effectively solve the led show in the operation of the output voltage, running environment changes, affect the efficiency of outdoor LED displays.
- Digital rgb hybrid manage machine
Rgb hybrid manipulate device is a key gadget for smart manage of massive outside outdoor LED displays. Led show is composed of a huge number of diodes. With the increase of use time, the brightness, coloration, gamut, tone of led show will decay, thus affecting the use effect. Via rgb control machine, 3 sorts of luminescence depth of crimson, inexperienced and blue may be allocated, and the brightness, coloration, gamut and tone of the led display can be reasonably adjusted in the lifestyles span of the led show. In this foundation, light emitting diodes can be used to gather purple, green and blue light, and then through dsp device and intelligent manage set of rules, the intensity, shade and tone of those three styles of mixed light can be managed.
That allows you to make certain the sampling effect of every colour, as a minimum three photodiodes need to be organized to accumulate red, green and blue mild colours respectively. After the acquisition is finished, it is going to be transformed into electrical sign, and after amplification and filtering, it’s going to re-input the corresponding pwm converter, and the three sampled signals can be analyzed and processed by way of dsp. Thru the effective law and control of pwm, it is able to realise the powerful manage of the cutting-edge through the led display, understand the real-time adjustment of the mild intensity, colour and tone of the outdoor LED displays, and make certain that the led show is constantly within the excellent going for walks state. Inside the operation of big out of doors led show display, the rgb combined improvement machine can correctly solve the affect of operating environment temperature, batch performance distinction and different elements at the show impact of led display screen. Using clever software program to manipulate, excessive nice show impact may be achieved in any state of affairs. However additionally has the friendly human-system interaction interface, the operator handiest desires to modify the relevant parameters, can recognise the customised display.
3, far off control system led show far flung control machine adopts computers. Amongst them, laptop 1 is used to input the textual content on the outdoor LED displays display screen and update the display content material. The content that wishes to be updated is written on pc 1 and then transmitted to laptop 2. Pc 2 methods and caches the records and documents transmitted through pc 1, after which makes use of wireless network or smartphone line to achieve far off communication. Within the faraway manipulate manner, laptop 2 is the modem of the led show, which is used for the modulation of the far flung transmission data. A modem is likewise positioned at the led show, but it isn’t always used for statistics modulation. It is a committed controller. In operation, it is not best important to control the operation of led show, however also to govern the statistics storage, and shape a unique interface board and the authentic led display controller to cooperate with every other. In the faraway control of led show display screen, two microcontrollers are mainly used because the interface board for statistics forwarding. Amongst them, a unmarried chip microcomputer is used to manipulate the reception of double port ram on the led show screen. The characteristic of some other unmarried chip microcomputer is to transmit the information stored inside the twin port ram to the led display display screen for show, on the way to shape a complete manner of information transmission and display.
Four, led display inner temperature control
Massive outside led shows are frequently established in regions with bad situations, which require solid operation in hot summer time and cold winter. However, the temperature in theoutdoor LED displays varies greatly in exceptional seasons. In an effort to ensure the secure and dependable operation of the led show and enhance its provider life, it’s far essential to put in a consistent temperature controller within the led show to satisfy the environmental needs of outdoor outdoor LED displays in distinctive areas and seasons, and ensure the normal operation of the led show. Led show normal use temperature variety among zero℃ ~ 20℃, in cold iciness, the outside temperature is lower than 0℃, can open the recent air curtain for heating. In hot summer time, whilst the out of doors temperature is better than 20℃, open the air con to cool down. If the out of doors temperature is simply among 0 ° c and 20 ° c, the hot air curtain and air conditioning aren’t commenced to reduce the operation price. If the operating temperature is simply too high or too low, the inner additives of the led display could be appreciably expanded, in order to shorten the service existence of the led display. Therefore, on the way to make sure the strong operation of the led show, the internal temperature must be managed among zero℃ and 20℃.
5, led display inner humidity manage
Humidity also has a brilliant affect on the performance and carrier lifestyles of led display. There are large variations in outside temperature and humidity in one of a kind regions. So that you can ensure the stable operation of the led show, it is vital to conduct clinical detection and manipulate of the inner temperature and humidity of the led show. If the temperature is too high, components can be burned. If the humidity is simply too excessive, the internal circuit of the led display is liable to quick circuit fault, and the temperature and humidity need to be strictly controlled. For large outdoor led presentations, humidity sensors want to be organized within the 4 corners and middle of the led display to enhance the extent of sensible control. When humidity control is achieved, the common cost of the parameters fed lower back via the five sensors is processed. If the humidity is simply too excessive, right away begin the heating gadget for dehumidification.
Two, led display sensible manage development potentialities
In state-of-the-art society, numerous big led screens may be seen everywhere in important towns, which has turn out to be the panorama of the city at night. Therefore, led show wise control technology has a terrific space for improvement. In the destiny, the function of outdoor LED displays will not be constrained to advertising and marketing display and site visitors notification, however via the powerful integration of various superior technologies, to build a clever community platform, and play a very essential function within the clever city. The aggregate of sensor era and outdoor LED displays can generate higher use features. Such as the combination of led display and dust sensor, can be real-time display of city air dirt pollution; the utility in environmental tracking and environmental protection can genuinely show the actual-time air quality, offer steering for air pollution manage, and make certain the quality of lifestyles of citizens.
TULED is a professional LED display manufacturer with 8 Years’ experience in producing and developing LED display, and the LED Control Systems are CE, EMC-B, FCC, RoHs approved. For all LED Display products we provide2 years warranty(keyword & keyword) . TULED has strictly LED display quality control management, for example, we equip high-quality LED chips, driving IC, LED modules and LED cabinets with our LED display panels to achieve the best effects for LED Screens and LED Display control system solutions.
With extensive product ranges, TU LED is able to produce and sell various LED products including UHD Small Pixel LED Display, Rental LED Display, Fixed LED display, Outdoor LED display, Indoor LED display, Creative LED Display, Sports Perimeter LED Display, Advertising LED Display, Frontal Service LED Display, etc. The applications can be varied such as commercial plazas, stadiums,shopping centers and transportation facilities.
