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Light brightness adjustment method, device and led lamp

A brightness adjustment and lighting technology, which is applied to lighting devices, lamp circuit layout, light sources, etc., can solve problems such as dimming jitter

Active Publication Date: 2018-05-01
PR LIGHTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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  • Light brightness adjustment method, device and led lamp
  • Light brightness adjustment method, device and led lamp
  • Light brightness adjustment method, device and led lamp

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[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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PUM

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Abstract

The invention relates to a method and device for adjusting the brightness of a lamp, and an LED lamp. The method includes receiving an input target brightness value; obtaining the current brightness value of the lamp; determining the brightness difference between the target brightness value and the current brightness value; Match the corresponding PID parameters to perform PID operation to obtain the adjustment value; calculate the output value according to the current value and the adjustment value; send the pulse signal corresponding to the output value to the drive circuit. In this light brightness adjustment method, the brightness difference is segmented in advance, and the brightness difference of different segments matches different PID parameters. When adjusting the brightness of the light, the corresponding PID parameters are matched according to the calculated brightness difference. By performing PID calculation on the brightness difference, it can achieve smooth control of lighting effects and reduce jitter.

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B37/02
Inventor 陈文刘贤莉
Owner PR LIGHTING