Tandem LED driven intelligence control system possessing output protecting function

Abstract

The invention relates to a serially connected LED driving intelligent control system with function of output protection, which is characterized in that the control system consists of a pulse-width generation controller, a drive circuit, a switching circuit, a feedback circuit, a sample circuit, an LED matrix and an LED lamp-bulb protective circuit, wherein, the LED matrix comprises a plurality of LED lamp-bulbs which are regularly arranged, and each of the LED lamp-bulbs is connected with the LED lamp-bulb protective circuit; the LED matrix is connected with the switching circuit which is connected with the sampling circuit; the sampling circuit is connected with the pulse-width generation controller through the feedback circuit; the pulse-width generation controller is connected with the switching circuit through the drive circuit. The control system aims to provide the serially connected LED driving intelligent control system with the function of output protection with stable performance, intelligent control of software, long service life, convenient maintenance and detection and convenient popularization and use.

Description

Technical field: [0001] The invention relates to a light-emitting diode (LED) driver, in particular to an integrated LED driving intelligent control system, which can make a plurality of series-connected LEDs have self-adaptive current in DC mode or increase the service life of LEDs in PWM mode. Background technique: [0002] LED is a new type of light source with energy saving, environmental protection, long life, low voltage power supply, less energy consumption, strong applicability, high stability and short response time. However, the driver matched with the LED light cannot keep up with the development needs of the LED light source. The performance of the driving circuit is not good, and the high failure rate has become a bottleneck restricting the popularization and application of LED. [0003] Existing LED drive power supplies, such as capacitive step-down circuits and switching regulator circuits, do not pay attention to the problem that the output light lumens and w...

AI Technical Summary

Problems solved by technology

However, the driver matched with the LED lamp cannot keep up with the development needs of the LED light source, the performance of the drive circuit is not good, and the high failure rate has become a bottleneck restricting the popularization and application of LED.

[0003] Existing LED drive power supplies, such as capacitor step-down circuits and switching regulator circuits, do not pay attention to the problem that the output light lumens and wavelength of LEDs are closely related to the temperature and current of the PN junction, which will cause premature aging of LEDs and cannot be effectively used. Meet the requirements of LED lighting driver

[0004] Moreover, the existing LED light strings include a plurality of LED light beads connected in series on one circuit. If any LED light bead on the circuit is damaged, all the LED light beads in the LED light string will be extinguished, resulting in the detection and maintenance of the LED light string. Very inconvenient and affect the continuity of lighting

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