Double-bypass large-power light modulation controller

Abstract

The invention provides a double-bypass large-power light modulation controller. The controller is provided with a single-chip microcomputer master control module, and a power conversion module, a bus communication control module and a light modulation output driving module connected to the single-chip microcomputer master control module; the light modulation output driving module is connected with an external light modulation load, and is provided with a relay output driving unit and a light modulation driving unit connected to the single-chip microcomputer master control module as well as a double-bypass output unit connected to the relay output driving unit and the light modulation driving unit; and a bypass light modulation control unit is adjusted into a silicon controlled rectifier light modulation mode or a relay protection mode according to practical light modulation load requirements. The double-bypass large-power light modulation controller can be switched between the silicon controlled rectifier light modulation mode and the relay protection mode via the double-path light modulation circuit, and the relay can be used for direct control when a silicon controlled rectifier is broken or the light modulation load does not include a light modulation chip, and the application range is wider.

Description

technical field [0001] The invention relates to the technical field of dimming, in particular to a double-bypass high-power dimming controller. Background technique [0002] The traditional lighting control method is mainly manual control. According to the different needs of users, the on and off of lamps in different areas is controlled to meet people's needs for life and work. However, this control method is simple and intuitive, and has the following disadvantages: [0003] 1. Switch control is complicated. Without scene operation, it is impossible to control the dimming of groups of lights, making the light appear monotonous, and the wiring of the double-control switch is complicated, and it is impossible to realize three-control and multi-control, which cannot meet people's requirements; lights and switches, it will destroy the decoration; there is no easy way to fully open and close and check the operation, which is very troublesome. [0004] 2. The principle of tur...

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Problems solved by technology

[0003] 1. Switch control is complex

Without scene operation, it is impossible to control the dimming of groups of lights, making the light appear monotonous, and the wiring of the double-control switch is complicated, and it is impossible to realize three-control and multi-control, which cannot meet people's requirements; lights and switches, it will destroy the decoration; there is no easy way to fully open and close and check the operation, which is very troublesome

[0004] 2. The principle of turning off the lights does not meet the requirements of energy saving

It is inconvenient to turn off the lights, which leads to a waste of electricity due to the delay in turning off the lights; the lights have no dimming function, which consumes electricity, and secondly, the high temperature caused by high brightness increases the burden on the air-conditioning system and also consumes electricity. Only replacement bulbs In order to solve the problem, when the light is turned on and off again, the sudden change of brightness not only greatly irritates the human eyes, but also the temperature of the filament is suddenly cold and hot, which affects the service life of the light bulb

[0005] With the improvement of people's living standards, people's requirements for the quality of life are getting higher and higher, and the requirements for lighting control are getting higher and higher. The traditional lighting system is far from meeting the needs, so the intelligent lighting system came into being.

[0006] At present, some dimming solutions on the market use analog dimming, that is, by distributing the voltage at both ends of the lamp to other power components, thereby changing the voltage at both ends of the lamp to achieve the purpose of dimming. Although this can achieve general dimming, but can not achieve energy saving and emission reduction

Other schemes use thyristor dimming method, but due to the unreasonable structure and circuit, the dimming accuracy is not good, the heat generation is large, and the effect is not good, and the power of a single circuit is mostly within 600W, which cannot meet some requirements. Such as the use of larger venues such as five-star hotel lobbies, banquet halls, and stadiums

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