A kind of led signal control circuit, led signal light and led signal control method
A signal control circuit and circuit technology, applied in the direction of electric lamp circuit layout, electric light source, electric light source, etc., can solve the problems of high cost and difficult realization of LED signal lights, and achieve the effect of low production cost, easy realization and simple circuit structure
Inactive Publication Date: 2016-03-30
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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[0004] The purpose of the embodiment of the present invention is to provide an LED signal control circuit, aiming to solve the problem of high cost and difficult realization of LED signal lights controlled manually or through networking
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[0020] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0021] In the embodiment of the present invention, the ambient light intensity is converted into photovoltage through the photovoltaic effect of the LED light-emitting diode, and the micro-processing unit adjusts the light and shade of the LED light-emitting diode according to the photovoltage to realize digital automatic control.
[0022] figure 1 The structure of the LED signal control circuit provided by the embodiment of the present invention is shown, and for the convenience of description, only the parts related to the present invention are shown.
[0023] The LED signal control circuit can ...
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The invention is applicable to the field of lighting control, and provides an LED signal control circuit, an LED signal lamp and an LED signal control method. The circuit comprises: a rectifier filter unit, wherein an input end of the rectifier filter unit is connected with a power supply, and the rectifier filter unit is used for carrying out rectifying and filtering on power supply voltage provided by the power supply; an LED light-emitting unit used for changing a photovoltage of the LED light-emitting unit according to the intensity of ambient light, and outputting the photovoltage as a sampling signal; a micro processing unit, wherein a reset terminal of the micro processing unit is connected with an output terminal of the rectifier filter unit, and a plurality of sampling terminals of the micro processing unit are connected with the LED light-emitting unit, and the micro processing unit is used for regulating an output current according to the sampling signal to regulate the brightness of the LED light-emitting unit. According to the circuit, the LED signal lamp and the method, through a photovoltaic effect of a light-emitting diode, the intensity of the ambient light is converted into the photovoltage, the micro processing unit adjusts the brightness of the light-emitting diode according to the photovoltage, digital automatic control is realized, a structure of the circuit is simple, and cost is low.
Description
technical field [0001] The invention belongs to the field of lighting control, and in particular relates to an LED signal control circuit, an LED signal lamp and an LED signal control method. Background technique [0002] At present, LED signal lights are widely used in traffic warnings, road markings, etc., and are installed outdoors. Because their visual distance is greatly affected by the environment, for example, in sunny days, signal lights do not need to be turned on to save energy; In normal times, the LED signal light should be the brightest to ensure the viewing distance; in cloudy weather, the LED signal light should be turned on but does not need to be the brightest, which can save power and ensure traffic safety. [0003] However, due to the large number of LED signal lights and scattered installation locations, the cost of manual control or network control is high, and it is difficult to implement. Contents of the invention [0004] The purpose of the embodim...
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IPC IPC(8): F21S10/00H05B37/02
Inventor 周明杰张表新
Owner OCEANS KING LIGHTING SCI&TECH CO LTD