A kind of AC phase-cut digital dimming control device and control method

A dimming control and phase-cutting dimming technology, which is applied in the computer field, can solve problems such as phase-cutting calculation errors, inconvenient operation, and affecting dimming accuracy, so as to achieve precise dimming and improve accuracy
CN112654114BActive Publication Date: 2022-07-08深圳市福乐沃光电科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
深圳市福乐沃光电科技有限公司
Publication Date
2022-07-08

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Abstract

The invention relates to an AC phase-cut digital dimming control device and a control method. The device comprises a zero-crossing detection circuit, an MCU main control circuit, a drive circuit and a phase-cut dimming circuit, and the MCU main control circuit is used for receiving The zero-crossing signal detected by the zero-crossing detection circuit, and output a zero-crossing compensation control signal according to the zero-crossing signal; the driving circuit is used to receive the zero-crossing compensation control signal output by the MCU main control circuit, and respond to the zero-crossing compensation control signal. The compensation control signal performs level amplitude conversion and outputs a MOS / IGBT drive level signal; the phase-cut dimming circuit is used for receiving the MOS / IGBT drive level signal output by the drive circuit, and according to the MOS / IGBT drive level signal The drive level signal outputs a phase-cut control signal to the lamp to be dimmed, so as to perform phase-cut dimming of the lamp to be dimmed. The present invention can realize precise dimming by outputting a phase-cut control signal to the lamp to be dimmed in the next cycle, so as to perform phase-cut dimming of the lamp to be dimmed, thereby improving the accuracy of phase-cut dimming.
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Description

technical field

[0001] The present invention relates to the technical field of computers, in particular to an AC phase-cut digital dimming control device and a control method. Background technique

[0002] LED dimming is a method of changing the luminous flux of the light source in the lighting device and adjusting the illuminance level. A dimmer is usually used, and the purpose of the dimmer is to adjust the different brightness of the light. Different intensities of light output produced by lights of average power are induced by decreasing or increasing the RMS voltage. While variable voltage devices can be used for various purposes, this modulation is intended to control lighting.

[0003] At present, when dimming the LED lights, there are mainly two ways. One is the way of using the DIP switch, and the 50Hz and 60Hz AC power is configured separately on the hardware. The other is the separate configuration of 50Hz AC and 60Hz AC through software programming. However, ...

Claims

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