Menu-based look-up table selection LED light attenuation compensation dimmer
A dimmer and selective technology, applied in the field of LED light attenuation compensation, can solve the problems of unreachable, inconvenient observation of LED light attenuation compensation effect and running time, poor versatility, etc., achieve intuitive operation platform, and realize portability Effect
Active Publication Date: 2017-04-12
SHANGHAI MOONS AUTOMATION CONTROL CO LTD
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Problems solved by technology
Although the LED light source is driven by a constant current source, due to the aging effect of chips and phosphors, the luminous flux output by the LED light source will decrease with time, that is, the luminous flux of the LED light source will gradually decay
On the one hand, the currently commonly used LED light attenuation compensation schemes have poor versatility. The LED driver can only provide one or a limited number of light attenuation compensation. When the ambient temperature is applied, the expected effect cannot be achieved; on the other hand, since there is no intuitive platform for users to operate, it is very inconvenient for users to select LEDs or observe LED light attenuation compensation effects and running time.
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[0026] like Figure 1-2 As shown, a menu-based look-up table selection LED light attenuation compensation dimmer, the light attenuation compensation dimmer is connected between the computer and the LED drive power supply, the light attenuation compensation dimmer includes a communication interface, Storage unit, control unit, system clock, reset port, and dimming output interface, the reset port, system clock, control unit, and dimming output interface are connected in sequence, and the storage unit is respectively connected to the communication interface, control unit, and system clock connection;
[0027] The computer calculates the current compensation rate data according to the user's input, and downloads the current compensation rate data to the storage unit of the light attenuation compensation dimmer, and the system clock accumulates the system time when the LED drive power supply is working, and judges the system time Whether the adjustment interval is changed, when t...
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The invention relates to a menu based table look-up selection type LED (Light Emitting Diode) attenuation compensation dimmer. The attenuation compensation dimmer which is connected between a computer and an LED driving power source comprises a communication interface, a storage unit, a control unit, a system clock, a reset port and a dimming output interface; the reset port, the system clock, the control unit and the dimming output interface are sequentially connected; the storage unit is connected with the communication interface, the control unit and the system clock. Compared with the prior art, the attenuation compensation dimmer has the advantages of having the portability, the observability and the reducibility, being high in flexibility and the like.
Description
technical field [0001] The invention relates to an LED light attenuation compensation technology, in particular to a menu-based look-up table selection type LED light attenuation compensation dimmer. Background technique [0002] The energy crisis, the greenhouse effect and the deteriorating ecological environment force people to pay more and more attention to the technology of improving energy utilization efficiency and environmental protection. LED (Light Emitting Diode, semiconductor light-emitting diode) light source has been more and more widely used in the lighting field due to its advantages of no toxic substances, environmental protection, long life, and high photoelectric efficiency. The LED light source is driven by a constant current source to provide DC power. Although the LED light source is driven by a constant current source, due to the aging effect of chips and phosphors, the luminous flux output by the LED light source will decrease with time, that is, the ...
Claims
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IPC IPC(8): H05B37/02
Inventor 李曾杨志民胡国勤涂必林金鑫吴云开陈良杨德斌
Owner SHANGHAI MOONS AUTOMATION CONTROL CO LTD