Self-dimming lamp tube and dimming method

Abstract

The invention discloses a self-dimming lamp tube and a dimming method. The self-dimming lamp tube comprises a tube body, a light source, photographing modules, a photosensitive module, a signal processing module and a main controller, wherein two ends of the tube body are provided with plugs, the tube body is provided with an aluminum substrate, the aluminum substrate is provided with a driving module, the light source is packaged on the aluminum substrate and is electrically connected with the driving module, the number of the photographing modules is at least two, the photographing modules are arranged on the outer sides of the plugs, the photosensitive module is electrically connected with the photographing modules, and extracts environmental factors and obtains a detection signal according to image information collected by the photographingmodules, the signal processing module is arranged in the plug, is electrically connected with the photosensitive module, and is used for carrying out differential amplification on the detection signal and generating a brightness signal, and the main controller is used for receiving the brightness signal and controlling the output current of the driving module of the aluminum substrate. According to the invention, common-mode interference signals influencing the detection accuracy are eliminated, and the output brightness of the lamp tube is effectively and accurately adjusted according to the real brightness in the environment.

Description

technical field [0001] The invention relates to the field of lighting appliances, in particular to a self-adjusting lamp tube and a dimming method. Background technique [0002] LED light tube refers to the light tube that uses LED as the light source. Compared with fluorescent tubes, it is more energy-saving, cheap, long-life, drop-resistant and simple in structure. It is a good substitute for fluorescent tubes in the future, and the brightness of existing tubes is limited The control method is completed by simple mechanical switches. Many lights are fully lit regardless of the brightness of the external environment, which wastes electricity and makes the light too strong, which may damage human eyes or other adverse effects. Contents of the invention [0003] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the present invention proposes a self-dimming lamp tube, which can adjust the brightness according to...

AI Technical Summary

Problems solved by technology

[0002] LED light tube refers to the light tube that uses LED as the light source. Compared with fluorescent tubes, it is more energy-saving, cheap, long-life, drop-resistant and simple in structure. It is a good substitute for fluorescent tubes in the future, and the brightness of existing tubes is limited The control method is completed by a simple mechanical switch. Many lights are fully lit regardless of the brightness of the external environment, which is a waste of electricity, and the light is too strong, which may damage human eyes or other adverse effects.

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