This is typically a set of predefined instructions that we develop so that, once uploaded to the LED array’s control system, they can precisely control the timing of the LEDs’ on/off cycles and the dynamics of their brightness changes. The solutions we implement are a response to the individual needs of LED system manufacturers in this area. Thanks to control algorithms, we can mix colors to achieve a specific, desired light color. Furthermore, it is possible to program changes over time, which expands the functionality of LED systems.
Perhaps not everyone knows that in LED applications, the most popular method of regulating luminous flux—that is, the brightness of the light—is known as pulse width modulation. It involves very rapidly switching the LED on and off in turn, and the ratio of the periods during which the LED is on and off determines the brightness level. Today’s microprocessors can do this very quickly, at frequencies reaching several or even over a dozen kHz—that is, several to over a dozen thousand times per second. A design team that opts for this method of brightness control may therefore face the problem of frequencies that are acoustically active.
Another, less common method, due to implementation costs, is amplitude dimming. In addition to its advantages, it also has limitations—it does, however, provide completely flicker-free control on the LED side, though it should be noted that the power drivers themselves also operate in pulses, which can be a source of interference.
If you prioritize high-quality performance and intend to use LED technology for specialized applications, partnering with an experienced provider who can guide you through all the intricacies of control systems may be the right choice.
Growing application needs and the unlimited possibilities offered by LED sources in this area are giving rise to increasingly exciting challenges in the field of control, especially if we set aside considerations regarding the method itself and focus on programmable logic, event sequences, signals triggering control functions, and the interdependencies between colors.
Even the simplest luminaires, operating in an on/off mode without the ability to control brightness via an external signal, appear to lack control. An integrated driver, whose purpose includes providing a correct and stable power supply to the LEDs, may incorporate quite complex control functions that operate automatically. An example of this is a thermal protection circuit, which dynamically measures the temperature inside the fixture and adjusts the current supplied to the LEDs, preventing them from overheating and, in the worst-case scenario, damaging the entire LED system.
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We provide a range of engineering services in the field of electronics and mechanics, focused on LED technology, at every stage of the production process. Whether you need support at all stages of the process or only at certain stages, we offer our knowledge, experience, and technological resources.
