LED lighting driver

A LED lighting and driver technology, applied in the direction of electrical components, etc., can solve the problems of difficult LED lighting illumination adjustment, failure to meet the lighting requirements of manned spacecraft, and large amplification factor, so as to solve the problem that the minimum illumination cannot be adjusted to zero and meet The effect of lighting environment requirements

Active Publication Date: 2020-02-21
BEIJING SPACE TECH RES & TEST CENT
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Problems solved by technology

This control method requires that a certain current sampling value can be fed back at the output terminal, and the sampling current should not be too small, otherwise the amplification factor of the current amplification link will be very large, making the power supply too sensitive to the feedback sampling and causing the power supply to be

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Embodiment Construction

[0021] In order to more clearly describe the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that are used in the embodiments. Apparently, the drawings in the following description are only some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to these drawings without creative efforts.

[0022] When describing the embodiments of the present invention, the terms "vertical", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", " The orientation or positional relationship expressed by "horizontal", "top", "bottom", "inner" and "outer" is based on the orientation or positional relationship shown in the relevant drawings, which are only for the convenience of describing the present invention and simplifying the description, and It is not to indicate or imply that the device or element referred to must have a particu...

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Abstract

The invention relates to an LED lighting driver. The LED lighting driver comprises: a plurality of LED lamps connected in series; a sampling circuit connected with the LED lamps in parallel; a power switch tube connected with the LED lamps and the sampling circuit; a voltage and current sampler connected with the sampling circuit; an illuminance adjusting potentiometer connected with the voltage and current sampler; a PWM chip connected with the power switch tube, the voltage and current sampler and the illuminance adjusting potentiometer, wherein the PWM chip controls the power switch tube toadjust according to the difference value of the voltage and current values fed back by the voltage and current sampler and the voltage and the current input required by adjusting the brightness of the LED lamps actually by the illuminance adjusting potentiometer. The LED lighting driver can achieve the dimming function of the lighting lamp in the manned spacecraft from zero illumination, and thedefect that the minimum illumination of the lighting lamp cannot be adjusted to zero is overcome.

Description

technical field [0001] The invention relates to the technical field of manned spacecraft instruments and lighting, in particular to an LED lighting driver. Background technique [0002] Manned spacecraft must be equipped with lighting equipment to provide lighting conditions for astronauts to live and work. Due to the disadvantages of low light efficiency and short life, traditional light sources do not meet the requirements of green lighting and space missions. In the new type of electric light source, LED has many advantages such as no pollution, long life, small size, energy saving, good shock resistance, fast response speed, and low driving voltage. The use of LED lighting in lighting equipment is not only conducive to improving the energy efficiency of the lighting system, but also provides a comfortable and safe environment for astronauts to live and work on board, ensuring the successful completion of scheduled flight missions. At present, the LED lighting lamp driv...

Claims

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Application Information

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IPC IPC(8): H05B45/325H05B45/10
Inventor 李皖玲谢枫陈鸿翔张天湘梁吴迪郭卫国赵岩松王海龙刘喆李立凌
Owner BEIJING SPACE TECH RES & TEST CENT
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