Method and device for adjusting lamplight brightness, and LED lamp
A brightness adjustment and lighting technology, which is applied in the field of LED lights, lighting brightness adjustment methods, and devices, and can solve problems such as dimming jitter
Active Publication Date: 2015-07-22
PR LIGHTING
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Problems solved by technology
[0004] However, the existing adjustment is to directly adjust the input target brightness value through pulse dimming or analog dimming, and the problem of dimming jitter is prone to occur during the dimming process
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[0046] Such as figure 1 As shown, a method for adjusting light brightness includes the following steps:
[0047] S101: Receive an input target brightness value.
[0048] S102: Obtain the current brightness value of the light;
[0049] S103: Determine the brightness difference between the target brightness value and the current brightness value.
[0050] S104: Perform PID calculation according to PID parameters corresponding to brightness difference matching to obtain an adjustment value.
[0051] S105: Calculate the output value according to the current value and the adjustment value.
[0052] S106: Send a pulse signal corresponding to the output value to the driving circuit.
[0053] The above-mentioned light brightness adjustment method can be used for brightness adjustment of stage lighting, architectural lighting, decorative lighting or LED lighting equipment. This implementation mode takes stage lighting adjustment as an example.
[0054] The operator uses the DMX51...
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The invention relates to a method and a device for adjusting a lamplight brightness, and an LED lamp. The method comprises the following steps: receiving an input target brightness value; obtaining the current brightness value of a lamplight; determining a brightness difference value between the target brightness value and the current brightness value; matching corresponding PID parameters according to the brightness difference value and carrying out a PID operation to obtain an adjustment value; calculating an output value according to the current value and the adjustment value; sending a pulse signal corresponding to the output value to a drive circuit. According to the method for adjusting the lamplight brightness, the brightness difference value is pre-sectioned, different PID parameters are matched according to the brightness difference value of the different sections, and when the lamplight brightness is adjusted, the corresponding PID parameters are matched according to the calculated brightness difference value; by carrying out the PID operation on the brightness difference value, a smooth lamplight control effect can be achieved, and chattering phenomena can be reduced.
Description
technical field [0001] The invention relates to the technical field of lighting dimming, in particular to a lighting brightness adjusting method, device and LED lamp. Background technique [0002] The stage lighting is usually adjusted by the DMX512 (Digital Multiplex Protocol Digital Multiplex) controller, and the brightness of the lighting can be adjusted according to the needs of the stage to show different stage effects. The DMX512 controller adopts the DMX512 protocol. DMX512 is developed by USITT (United States Institute of Theater Technology) as a way for the controller to control the dimmer with a standard digital interface. [0003] The existing method of using the DMX512 controller to adjust the brightness of the light is to output the target brightness value according to the user's input on the DMX512 controller to adjust the brightness and darkness of the light, and then adjust the output current through pulse dimming or analog dimming to achieve the brightness o...
Claims
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Inventor 陈文刘贤莉
Owner PR LIGHTING