Ultraviolet light source system with light intensity automatic feedback correction function and application thereof

An ultraviolet light source and automatic feedback technology, which is applied in the field of ultraviolet light source system, can solve the problems of imperfect UV LED manufacturing process, affecting the use effect of ultraviolet LED, and fast light intensity attenuation and attenuation speed, so as to eliminate its own light attenuation and power supply current Changes, the effect of ensuring effectiveness

Inactive Publication Date: 2020-08-14
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the manufacturing process of UV LED is not perfect enough, and the light intensity attenuation is faster than that of blue LED or red LED during long-term work. The weakening of light intensity will inevitably affect the use effect of UV LED and reduce the performance in applications.

Method used

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  • Ultraviolet light source system with light intensity automatic feedback correction function and application thereof
  • Ultraviolet light source system with light intensity automatic feedback correction function and application thereof
  • Ultraviolet light source system with light intensity automatic feedback correction function and application thereof

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Embodiment Construction

[0020] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0021] The invention discloses an ultraviolet light source system with a light intensity automatic feedback correction function, comprising:

[0022] The power converter converts the electric energy of the power supply into an adjustable current for the ultraviolet light source;

[0023] A current collector, used to detect the input current value and feed it back to the inner loop controller;

[0024] Ultraviolet light source, emitting light intensity signal;

[0025] Photosensitive sensor, which converts the light intensity signal into an electrical signal and amplifies it and feeds it back to the outer loop controller;

[0026] The outer loop controller outputs the electric signal fed back by the photosensitive sensor...

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Abstract

The invention relates to an ultraviolet light source system with a light intensity automatic feedback correction function and an application thereof. The ultraviolet light source system comprises a power converter, a current collector, an ultraviolet light source, a photosensitive sensor, a outer ring controller which is used for outputting an electric signal fed back by the photosensitive sensorand the set light intensity to an inner ring controller after operation, and the inner loop controller which is used for processing the electric signal fed back by the current collector and the signaloutput by the outer loop controller and then controlling the current value output by the power converter. According to the invention, the ultraviolet LED is controlled by using double loops, the change of system current and light intensity can be fed back in real time, the controller effectively adjusts the control end of the power converter, the influence of the light attenuation of the ultraviolet LED and the change of power supply current is eliminated, the constant output light power of the ultraviolet LED is ensured, and the use effectiveness of an ultraviolet light source is ensured.

Description

technical field [0001] The invention belongs to the technical field of semiconductors, in particular to an ultraviolet light source system with a light intensity automatic feedback correction function and its application. Background technique [0002] Ultraviolet LEDs are gradually replacing the position of mercury lamps, and continue to enter people's production and life, and are used in printing, medical treatment, plant lighting, water treatment, disinfection and other fields. However, the manufacturing process of UV LEDs is not perfect enough, and the light intensity attenuation is faster than that of blue LEDs or red LEDs during long-term work. The weakening of light intensity will inevitably affect the use effect of UV LEDs and reduce the performance in applications. [0003] In order to obtain a constant output of ultraviolet light intensity, it is necessary to carry out a control design on the ultraviolet LED. Contents of the invention [0004] In view of this, on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B45/30H05B45/20H05B45/10
CPCH05B45/10H05B45/20H05B45/30
Inventor 闫建昌刘春岩王军喜李晋闽
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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