LED intelligent dynamic control system and control method

Abstract

The invention discloses an LED intelligent dynamic control system and a control method. The system comprises a central control unit, an adjustable constant current unit and a voltage and current detection unit, wherein the adjustable constant current unit is connected with a control output port and a load of the central control unit, and the voltage and current detection unit is connected with a control input port of the central control unit. The method comprises the following steps of S1, initializing the control system and configuring a minimum current output by an adjustable constant current module; S2, gradually increasing output current of the adjustable constant current module until voltages at both ends of the load are rated voltages; S3, locking an output current value at the time by the control system; and S4, detecting the load and variation of load current and voltage in real time and carrying out dynamic adjustment by the control system. Through a microprocessor technology and a real-time detection technology, the invention dynamically processes the load and the variation of the load current and voltage value, automatically carries out dynamic control according to the variation condition to enable the output current to be constant and can display a work state of the load through four LEDs.

Description

technical field [0001] The invention relates to an LED intelligent dynamic control system and a control method, in particular to an LED intelligent dynamic control system and a control method with functions of automatic load matching and overrun warning. Background technique [0002] LED is Light Emitting Diode, which is called light-emitting diode in Chinese. LED has been widely used in the display field due to its inherent characteristics. High-power LED is a kind of high-brightness light-emitting diode. Compared with low-power LED, a single high-power LED has higher power and stronger brightness. Because LED itself has high brightness, low operating voltage, low power consumption, no pollution, small size Its outstanding advantages such as luminescence, long life, impact resistance and stable performance have made it gradually move towards the application road in the field of lighting systems, and will gradually replace the existing widely used incandescent lamps. [000...

AI Technical Summary

Problems solved by technology

[0003] However, the important factor limiting the use of LEDs for lighting is that their cost is relatively expensive. The price of several LEDs can be equivalent to the price of an incandescent lamp, and the price of high-power LEDs used in lighting fixtures is even higher. A group of lamp holders usually includes dozens or even hundreds of LEDs. Therefore, it is more important to protect the LEDs of LED lighting fixtures and prolong the service life of LEDs for the promotion and popularization of LED lighting fixtures.

[0004] The key factor affecting the service life of LEDs is the power supply system. Most LED power supply systems use constant current power supplies. Most of t

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