LED lamp control method and device without light decay

Abstract

The invention relates to an LED lamp control method and a device without light decay, the device comprises an AC / DC controllable constant current power supply, LED voltage measurement, LED current measurement, LED brightness measurement, environment temperature measurement and an AC / DC direct current voltage stabilizing power supply; the method comprises the following steps that after converting alternating current into direct current, the AC / DC controllable constant current power supply outputs constant direct current to an LED array according to the instruction of the controller: LED voltage measurement, LED current measurement and LED brightness measurement transmit the working conditions of the LED array to the controller in real time, and the controller sends the instruction of outputting current values to the AC / DC controllable constant current power supply according to preset control strategies and the measured environment temperature; simultaneously, once the working conditions of the LED array are found abnormal, the controller sends alarm information to a monitoring center in real time in a wired or wireless way through a communication interface; and the monitoring center can also send the working instructions to the controller in the wired or wireless way.

Description

Technical field: [0001] The invention relates to the field of lighting technology, and also to automatic control and information technology, in particular to a method and device for controlling LED lamps without light attenuation. Background technique: [0002] In today's situation of increasingly serious environmental pollution and energy shortage, LED lights have been continuously expanded due to their advantages of energy saving, environmental protection, high efficiency, and long life. [0003] LEDs emit light through electrical energy-light energy conversion. When an appropriate forward voltage is applied to the pins of the LED, in the PN junction of the LED, the injected minority carriers will recombine with the majority carriers and the excess energy will be released in the form of light, thereby converting the electrical energy Directly converted to light energy, while the remaining electrical energy is converted to heat energy. The theoretical electric energy-ligh...

AI Technical Summary

Problems solved by technology

If this part of the heat cannot be dissipated in time, the junction temperature of the LED will rise.

If things go on like this, it will cause permanent damage to the LED if it is serious, and it will reduce the luminous efficiency of the LED, accelerate the decay speed, and shorten the service life

[0004] In order to reduce the junction temperature of the LED when it is working, the usual way is to strengthen the heat dissipation parts, but on the one hand, this increases the weight, volume and manufacturing cost of the equipment; , rust and other reasons cause the heat dissipation capacity of the heat dissipation components to decline, which not only affects the effect of heat dissipation and cooling, but also increases maintenance costs

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