Dimming circuit, dimming device and dimming control method

Abstract

The invention discloses a dimming circuit, a dimming device and a dimming control method. The dimming circuit comprises a collecting module used for collecting inductive signals, a pre-amplification circuit connected with the collecting module and used for conducting pre-amplification on the inductive signals, a dimming control circuit connected with the pre-amplification circuit and used for generating voltage parameters for driving a luminous load according to the amplified inductive signals, and a voltage driving circuit connected with the dimming control circuit and used for driving the luminous load according to the voltage parameters. By means of the dimming circuit, the dimming device and the dimming control method, flexible dimming can be conducted according to users' individual requirements and environmental requirements, so ideal voltage parameters are output, and great convenience is brought to users; meanwhile, it can be avoided that the luminous load works continuously, then it is avoided that the output voltage of the luminous load is too high, and thus the service life of the luminous load can be prolonged.

Description

technical field [0001] The invention relates to the technical field of dimming circuits, in particular to a dimming circuit, a dimming device and a dimming control method. Background technique [0002] In LED lighting fixtures, infrared sensing technology is usually used to perceive environmental information to realize dimming, temperature adjustment or color adjustment of LED lights. Infrared sensor is a common sensor used for automatic control of lamps, usually used in corridors, Corridors, bathrooms, garages and other places are supplemented by LED lights for lighting, so that the LED lights can be turned on when people come and go off when people leave. [0003] At present, traditional dimming methods usually directly use adjustable loads for dimming. For example, the most common ones are LED sensor lights or infrared sensor lights. The brightness signal realizes that the light is always on or off, or according to the infrared signal, the light is on when people come an...

AI Technical Summary

Problems solved by technology

[0003] At present, traditional dimming methods usually directly use adjustable loads for dimming. For example, the most common ones are LED sensor lights or infrared sensor lights. The brightness signal realizes that the light is always on or off, or the light is turned on when people come and go off according to the infrared signal, so it is impossible to flexibly adjust the light according to human needs

It can be seen that the traditional dimming method requires real-time detection, so the lighting circuit needs to work for a long time. Obviously, its output voltage is relatively large, that is, if the induction lamp or infrared induction lamp is always in the working state, it is easy to break down and affect its service life.

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