Constant-current LED intelligent control street lamp based on ambient light brightness and darkness conversion

Abstract

The invention provides a constant-current LED intelligent control street lamp based on ambient light brightness and darkness conversion. The constant-current LED intelligent control street lamp is characterized by at least comprising an LED array, an LED control circuit and a constant-current circuit, the LED control circuit is used for detecting ambient light of the environment where the LED array is located and controlling on-off between the LED array and a power source according to the ambient light, the constant-current circuit is used for detecting the magnitude of working current of theLED array, and controlling the working current of the LED array to be within the set working current. The ambient light is detected through the LED control circuit, intelligent turn-on or turn-off ofthe street lamp is achieved according to the preset ambient light threshold value, meanwhile, the thermal dissipation function of the LED street lamp is enhanced, and the actual service life of an LEDis prolonged.

Description

technical field [0001] The invention relates to the field of intelligent control, in particular to a constant-current LED intelligent control street lamp based on ambient light-dark transformation. Background technique [0002] LED lights have the characteristics of small size, light weight, good directionality, long energy-saving life, etc., and have been widely used in urban lighting. In this mode, in summer, it is often found that the street lights are turned on when the sky is still bright, and the lighting function is not realized while the power is consumed, resulting in a waste of power resources; in winter, when it is completely dark, the street lights are not turned on. It causes inconvenience to pedestrians and vehicles. Therefore, the mode of turning on or off street lights at a fixed time completely ignores the natural law that daytime changes with seasonal changes. Of course, the switching time of street lights can also be adjusted according to seasonal changes,...

AI Technical Summary

Problems solved by technology

[0002] LED lights have the characteristics of small size, light weight, good directionality, long energy-saving life, etc., and have been widely used in urban lighting. In this mode, in summer, it is often found that the street lights are turned on when the sky is still bright, and the lighting function is not realized while the power is consumed, resulting in a waste of power resources; in winter, when it is completely dark, the street lights are not turned on. It causes inconvenience to pedestrians and vehicles. Therefore, the mode of turning on or off street lights at a fixed time completely ignores the natural law that daytime changes with seasonal changes. Of course, the switching time of street lights can also be adjusted according to seasonal changes, but real-time adjustments require human labor. In addition, LED lights are greatly affected by temperature and require high heat dissipation, but the heat dissipation performance of existing LED street lights cannot meet the heat dissipation requirements of LED street lights

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