An intelligent dimming controller suitable for dimming in large-area spaces

Abstract

The invention discloses an intelligent dimming controller suitable for dimming in large-area spaces, including an internal dimming module and a bypass switch, and an air switch is connected between the internal dimming module and an external power supply; The internal dimming module described above includes an MCU main control module, an internal power supply, a dry contact module connected with the MCU main control module, a photocoupler connected with the MCU main control module, and a bidirectional thyristor circuit connected with the MCU main control module; The bidirectional thyristor circuit is internally connected with a choke coil, and the bidirectional thyristor circuit is connected to the load output board; a bypass switch is connected between the load output board and the air switch; the MCU main control module passes The 485 communication circuit is connected with the control terminal and the PC respectively; the 485 communication circuit and the dry contact module are respectively connected to two input pins of the MCU main control module; the described bidirectional thyristor circuit is connected to the MCU main control module Output pin; the dry contact module is connected to the current feedback module.

Description

technical field [0001] The invention relates to the field of engineering circuit control, in particular to an intelligent dimming controller suitable for dimming in large-area spaces. Background technique [0002] The existing architectural lighting control system mainly controls the on / off of the light source. Usually, when the light is sufficient during the day, the brightness of the light source is still relatively large, and it cannot perform reasonable illuminance control and scene control according to the environment. These unnecessary lightings cause a lot of waste of electric energy. In the actual use of the light source, in order to meet the illuminance and light aesthetic design requirements under different time, environment and atmosphere, effectively avoid lighting dark corners and reduce power consumption, the light source often needs to add a dimming function to control the illuminance mode adjustment. However, ordinary lamps do not have dimming performance, ...

AI Technical Summary

Problems solved by technology

[0003] 1. The existing dimming controller has poor protection. Once the system is paralyzed, it cannot continue to guarantee the normal lighting of the controlled area, cannot deal with sudden lighting accidents in time, and does not have the power-off memory function;

[0004] 2. The existing dimming controller has a single scene setting, and it is impossible to set partitions, and it is impossible to make temporary reasonable changes according to the needs of the owners;

[0005] 3. The performance of the existing dimming controller is unstable. When the dimming is adjusted to a lower illuminance, it is prone to flicker

If the control system and lighting equipment are not matched, it may cause the light to go out or flicker, and may cause damage to the driving circuit of the light source and the light source;

[0006] 4. Some products of existing dimming controllers do not have a soft start function, and cannot well control the impact on the bulb when the power is turned on or off, and the impact of grid overvoltage on the life of the lamp. Even if dimming is used, it cannot be effectively controlled. Extend the life of expensive lamps;

[0007] 5. The type of the existing dimming controller belongs to the trailing edge phase control dimming, the power of the dimming equipment is small, the heat dissipation is poor, the cost is high, and the manufacturing process is complicated;

[0008] 6. Even if it is the leading edge phase-cut dimming of the thyristor, because of the properties of the thyristor half-controlled switch, it only has the function of turning on the current, but cannot completely turn off the current. The characteristic of current luminescence makes it difficult for many leading-edge phase-cut dimming products on the market.

[0009] 7. Picky about the variety of dimming lamps, it is difficult to match the dimming with various types of lamps;

[0012] 10. The current feedback module cannot be expanded, and the current situation cannot be checked in real time to measure electricity bills

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