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Dimming method and device for an LED lamp

A technology of LED lamps and dimming devices, which is applied in the direction of lighting devices, light sources, electric light sources, etc., can solve the problems of affecting the shooting effect, easy to capture bright and dark video images, and can not meet the requirements of use well, so as to avoid bright Dark streaks or shadows, good dimming linearity, no flickering and juddering effects

Active Publication Date: 2018-03-23
GUANGZHOU FLY DRAGON LIGHTING EQUIP
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Problems solved by technology

All of these cannot meet the requirements of use in performance scenes that require high light-dark contrast and light-dark changes. In addition, in the case of non-full brightness, it is easy to capture bright and dark stripes on the camera screen when shooting with camera equipment. Seriously affect the shooting effect

Method used

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  • Dimming method and device for an LED lamp
  • Dimming method and device for an LED lamp
  • Dimming method and device for an LED lamp

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Embodiment Construction

[0052] Below, in conjunction with accompanying drawing and specific embodiment, the present invention is described further:

[0053] The invention provides a dimming method of an LED lamp, which comprises the following steps:

[0054] S1: Receive a control signal from the DMX console, the control signal has a target brightness value;

[0055] The LED lamp applied in the present invention has a CPU inside, and the CPU is electrically connected to the DMX console, and accepts the control of the DMX console. The signal generated by the DMX console is the channel DM value of 0-255, and the CPU stores the Brightness values ​​corresponding to different channel DM values. For example, the channel DM value of the last control signal is 10, and the channel DM value of the control signal received this time is 80. Then the CPU obtains the brightness values ​​corresponding to 10 and 80, and 80 The corresponding brightness value is also the target brightness value.

[0056] S2: Obtain th...

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Abstract

The invention discloses a dimming method and device for an LED lamp. The method is as follows: receiving a control signal from a DMX console, the control signal having a target brightness value; obtaining a current brightness difference value according to the target brightness value and the current brightness value, Calculate the current brightness growth data according to the current brightness difference; obtain a new current brightness value based on the current brightness growth data and the current brightness value, and judge whether the current brightness value is equal to the target brightness value, and if so, stop continuing to obtain a new current brightness value. Otherwise, obtain the current brightness difference value according to the new current brightness value and the target brightness value, and then calculate new current brightness growth data according to the current brightness difference value, and then repeat the above steps. The invention ensures the continuous and stable transition of LED lamps during the whole process of dimming, and has good dimming linearity, avoids bright and dark stripes or dark shadows on the camera screen during video recording or shooting, and satisfies the use of lights in the scene to the greatest extent. .

Description

technical field [0001] The invention relates to a dimming technology of an LED lamp, in particular to a dimming method and device for an LED lamp. Background technique [0002] Due to the advantages of high efficiency, energy saving, green environmental protection and long life, LED lamps are more and more used in stage performances and film and television lighting. In comparison, most LED stage lamps use low-frequency dimming, and the dimming performance is not ideal. The lamps flicker at low brightness or have obvious steps when dimming at the beginning of dimming. feel. All of these cannot meet the requirements of use in performance scenes that require high light-dark contrast and light-dark changes. In addition, in the case of non-full brightness, it is easy to capture bright and dark stripes on the camera screen when shooting with camera equipment. Seriously affect the shooting effect. Contents of the invention [0003] In order to overcome the deficiencies of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/10
Inventor 陈啟杰
Owner GUANGZHOU FLY DRAGON LIGHTING EQUIP
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