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LED driving device and light modulation system

A technology for LED driving and LED lamps, applied in lighting devices, light sources, electric light sources, etc., can solve problems such as affecting the normal operation of the LED driving device, damage to the dimmer, inconsistent power-on timing of the LED driving device, etc.

Pending Publication Date: 2018-06-01
HANGZHOU SILAN MICROELECTRONICS
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Even the dimmer is damaged due to excessive current
Furthermore, in actual use, the power-on sequences of multiple LED driving devices are inconsistent, causing interference with each other, and even affecting the normal operation of the LED driving devices
[0008] Therefore, when the existing LED dimming system uses a single dimmer to control multiple parallel LED driving devices, there are still interference problems between the dimmer and multiple LED driving devices and between multiple LED driving devices

Method used

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  • LED driving device and light modulation system
  • LED driving device and light modulation system
  • LED driving device and light modulation system

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Embodiment Construction

[0072] Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings. In the various figures, identical elements are indicated with similar reference numerals. For the sake of clarity, various parts in the drawings have not been drawn to scale. Also, some well-known parts may not be shown.

[0073] In the following, many specific details of the present invention are described, such as device structures, materials, dimensions, processing techniques and techniques, for a clearer understanding of the present invention. However, the invention may be practiced without these specific details, as will be understood by those skilled in the art.

[0074] The invention can be embodied in various forms, some examples of which are described below.

[0075] figure 2 A schematic block diagram of an LED dimming system according to an embodiment of the present invention is shown. The LED dimming system includes a dimmer 110 , LED driving...

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Abstract

The application discloses an LED driving device and a light modulation system. The LED driving device is used for driving an LED lamp and comprises a rectifier bridge, a light modulation interface module used for generating a first brightness control signal and a second brightness control signal, a control module used for generating a first switch control signal according to the first brightness control signal, and a power conversion module used for converting a direct current bus voltage to a direct current output signal according to the first switch control signal, the light modulation interface module generates the first brightness control signal according to a light modulation signal of a light modulator or the second brightness control signal of another LED driving device, and the power conversion module controls electric energy transmission according to the first brightness control signal to adjust the brightness of the LED lamp. According to the LED driving device, different types of light modulators can be automatically recognized, the LED driving device is completely compatible with conventional 0-10 V direct current light modulators, a plurality of LED driving devices areallowed to share the light modulator, and mutual interferences can be avoided.

Description

technical field [0001] The present invention relates to light source control technology, more specifically, to an LED driving device and a dimming system. Background technique [0002] When light-emitting diodes (light-emitting diodes, LEDs) are used in the lighting field, an LED dimming system is used to adjust the brightness to meet the individual needs of users or to adjust the light according to environmental requirements to reduce energy consumption. The brightness and color temperature of the LED can be adjusted by using the LED dimming system to meet the needs of users. [0003] The LED dimming system, for example, uses a traditional thyristor dimmer. However, the thyristor dimmer has the problem of maintaining inconsistent current, and the products of different countries and brands are also different, which is prone to the problem of dimmer compatibility. In addition, phenomena such as flickering will also appear during the dimming process. [0004] The further im...

Claims

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Application Information

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IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/10
Inventor 叶美盼蔡拥军叶青植
Owner HANGZHOU SILAN MICROELECTRONICS
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