Method and device for adjusting brightness of LED lamp
A technology of brightness adjustment and LED lights, which is applied to lighting devices, light sources, electric light sources, etc., and can solve the problems of slow start-up speed of LED lights, difficulty in maintaining stable power output, uneven illumination, etc.
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no. 1 example
[0048] see figure 1 , the embodiment of the present invention provides a first embodiment of a method for adjusting the brightness of LED lights, including:
[0049] 101. Detect the chopped sinusoidal signal and convert the lack of half-wave in each cycle of the sinusoidal signal into a binary number;
[0050] In the embodiment of the present invention, it is first necessary to detect the chopped sinusoidal signal and convert the lack of half-wave in each cycle of the sinusoidal signal into a binary number. It should be noted that a certain cycle of the chopped sinusoidal signal There may be a lack of a positive half-wave or a negative half-wave, and the aforementioned detection of the chopped sinusoidal signal includes detection of the absence of a half-wave of the chopped sinusoidal signal, which will not be described in detail below.
[0051] 102. Read the binary number sequentially by reading the preset number of digits each time and convert the reading result into a corr...
no. 2 example
[0055] see figure 2 , the embodiment of the present invention provides a second embodiment of a method for adjusting the brightness of LED lights, including:
[0056] 201. Receive the switch signal and perform chopping processing on the sinusoidal signal through the chopper circuit at the control switch according to the switch signal;
[0057] In the embodiment of the present invention, it is first necessary to receive the switch signal and perform chopping processing on the sinusoidal signal by controlling the chopper circuit at the switch according to the switch signal.
[0058] 202. Detect the chopped sinusoidal signal and convert each period of the sinusoidal signal to 1 by marking the absence of half-waves in each period of the sinusoidal signal and 0 if there is no lack of half-waves in each period of the sinusoidal signal. The absence of the middle half wave is converted into a binary number;
[0059] In the embodiment of the present invention, after receiving the sw...
no. 3 example
[0064] see image 3 , the embodiment of the present invention provides a third embodiment of a method for adjusting the brightness of LED lights, including:
[0065] 301. Receive the switch signal and perform chopping processing on the sinusoidal signal through the chopper circuit at the control switch according to the switch signal;
[0066] In the embodiment of the present invention, it is first necessary to receive the switch signal and perform chopping processing on the sinusoidal signal by controlling the chopper circuit at the switch according to the switch signal.
[0067] 302. Detect the chopped sinusoidal signal and convert each period of the sinusoidal signal to 0 by marking the lack of a half-wave in each period of the sinusoidal signal and 1 if there is no lack of a half-wave in each period of the sinusoidal signal. The absence of the middle half wave is converted into a binary number;
[0068] In the embodiment of the present invention, after receiving the switc...
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