Service life estimation method of light-emitting diode (LED) lamp

A LED lamp and life estimation technology, which is applied in the field of semiconductor measurement and calculation, can solve problems such as complex algorithms and inaccurate calculation results, and achieve the effect of accurate and scientific algorithms

Inactive Publication Date: 2013-03-27
青海天普太阳能科技有限公司
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Problems solved by technology

[0025] The lifespan of LEDs currently on the market is all theoretical, but the lifespan of LEDs is not only affected by its own quality factors, but also restricted by many

Method used

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Embodiment 1

[0031] 1. A method for estimating the life of an LED lamp, which is characterized in that the life of the LED light source under the condition of accelerated junction temperature and the life of the electrolytic capacitor in the LED circuit are respectively estimated, and then the overall life estimation algorithm of the LED lamp is obtained according to the probability theory.

[0032] 2. The life estimation method of the LED light source under the condition of accelerated junction temperature Use the Arrhenius model to calculate the life S1 of the LED light source under the normal temperature working environment. Then estimate the failure rate P1 of the LED, P1=1-S1 / S2, where S2 is the theoretical life of the LED specification.

[0033] 3. The life estimation algorithm of the electrolytic capacitor in the LED circuit uses the algorithm Lx=L0 (or LR)*KT*KR1 (or KR2)*Kv, where Lx: the estimated life of the electrolytic capacitor; L0 / LR: the specification of the electrolytic cap...

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Abstract

The invention discloses a service life estimation method of a light-emitting diode (LED) lamp. LED service life labeled in market is theoretical and is restricted by conditions such as environment and stability of electronic circuit accessories besides self quality. The service life estimation method is based on an LED junction temperature acceleration service life method, is combined with an electrolytic capacitor service life estimation method, is matched with the mathematical probability theory to estimate service life of the whole LED lamp, is scientific and reasonable and provides scientific data theory reference for design of LED lamps with long service life and high performance.

Description

technical field [0001] The invention relates to the technical field of semiconductor measurement and calculation, in particular to a method for estimating the life of an LED lamp. Background technique [0002] LED belongs to the semiconductor industry, coupled with the definition of lifetime of semiconductor products, the constraints of various factors, and the rapid understanding of continuous progress, there is no unified understanding of standards in a new field, so that not only ordinary customers but also traditional Professionals in the lighting industry feel a little foggy. [0003] The lifespan of LEDs is no longer as simple to understand as traditional light sources, and new fields are still being explored, with many concepts and lack of practical experience. The purpose of this invention is to use scientific methods to approximate the life of LEDs, not only to help downstream lighting companies using LEDs to know how to choose reliable LEDs and make reliable syste...

Claims

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Application Information

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IPC IPC(8): G01R31/44
Inventor 杨志刚
Owner 青海天普太阳能科技有限公司
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