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Method for stabilizing luminous attenuation in lighting life period of LED lamp

A technology of LED lamps and constant light, applied in the field of electronics

Inactive Publication Date: 2015-05-13
DONGGUAN SHILONG FUHUA ELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The above drawbacks are problems that people want to solve but have not solved. Up to now, no technology has been disclosed.

Method used

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  • Method for stabilizing luminous attenuation in lighting life period of LED lamp
  • Method for stabilizing luminous attenuation in lighting life period of LED lamp
  • Method for stabilizing luminous attenuation in lighting life period of LED lamp

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Embodiment Construction

[0029] The present invention will be described below in conjunction with specific embodiments.

[0030] Such as Figure 1 to Figure 5 As shown, implementing a method for constant light decay during the lighting life of an LED lamp includes the following steps:

[0031] S1. First, measure the initial illuminance value of the LED lamp;

[0032] S2, then set a timing storage module 2 controlled by the controller 3, and connect the LED drive power supply 1;

[0033] S3. After the LED lamp starts to run, the controller 3 stores the accumulated running time data into the timing storage module 2; and stores the initial illuminance value of the LED lamp into the timing storage module 2;

[0034] S4. Then, when the LED lamp has run for 6000 hours, the illuminance value of the LED lamp is measured again, and the secondary illuminance value of the LED lamp is stored in the timing storage module 2;

[0035] S5. Then, substitute the cumulative running time, the value of the primary illu...

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Abstract

The invention discloses a method for stabilizing luminous attenuation in a lighting life period of an LED lamp. The method comprises the steps of measuring a preliminary illuminance value of the LED lamp; then arranging a timing storage module which is controlled by a controller and is connected with an LED driving power supply; storing accumulated operation time data into the timing storage module; storing the preliminary illuminance value of the LED lamp into the timing storage module; at preset time, storing a measured secondary illuminance value into the timing storage module; then substituting all pieces of data into a formula to obtain frequency and duty ratio data of a PWM signal of a main control chip, and inputting the data into the LED driving power supply by the controller. According to the method, the controller and the timing storage module which are low in cost are additionally arranged in the LED driving power supply, so that the cost increase is extremely low; however, the output luminous flux of the lamp is constant in the life period of the LED lamp. Therefore, a standard lighting environment is provided for a user, and the user can finish work in a high quality manner.

Description

technical field [0001] The invention relates to electronic technology, in particular to a power supply for LED lighting, in particular to a method for constant light decay during the lighting life of LED lamps. Background technique [0002] In the prior art, many workplaces require constant illuminance, that is, the output luminous flux of LED lamps must be constant, such as: hospital operating rooms, testing rooms, art creation rooms, and so on. However, all lighting fixtures have a problem of end-of-life, especially when they are approaching the end of life, the output luminous flux of the lighting fixtures decays more rapidly. If you frequently replace new lighting fixtures, it is bound to increase expenses. [0003] In fact, for LED lamps, according to the light attenuation of the lamps, the drive current can be increased accordingly to keep the output luminous flux unchanged in the later stage of use, which not only meets the requirements of the use environment for ill...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02
CPCY02B20/40
Inventor 黄子田庞里生
Owner DONGGUAN SHILONG FUHUA ELECTRONICS
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