The following briefly describes two parts , whether led to parts or finished products presented , can take advantage of and follow patterns to achieve basic authentication led outdoor lighting wholesale products.
1 product life verification
In the electronics industry , in order to obtain the product requirements of life, often using three methods
( 1 ) life prediction method (Prediction)
Methods: According to the principle of MIL HDBK 217 parts count method (Part count) and Parts Stress Method (Part stress) , the use of the software to calculate the life of the product .
Advantages: Short time-consuming , low cost
Disadvantages : The result is easy and practical differences in product life far
( 2 ) Measured Life Act (Demonstration)
Methods: acceleration model (AccELeration model), calculated acceleration factor (Acceleration factor) and provide real samples using environmental testing simulator measured the samples in order to achieve product life. Currently Arrhenius acceleration model to model ( high temperature accelerated ), Coffin-Manson model ( temperature cycle acceleration ) and Hallberg-Peck ( humidity acceleration ) with the highest degree .
Pros: The results compared with the estimated true law , the industry accepted high
Disadvantages: high cost and time-consuming method than the estimated length
( 3 ) market feedback Act (Field return)
Methods: The recovery of the product user position on the market use.
Pros: the result is equal real life
Disadvantages: time and cost more , the market situation is difficult to obtain using usually only brand of self-preservation field
These three methods to obtain the product life of up to life measurement method adopted by the industry because it eliminates not only produce results and the actual gap is too big drawbacks , and it is obtained through the measurement , regardless of the buyer and seller to accept a high degree of both .
2 environmental testing to verify
First, we must do for their own products designed to analyze a contour of life , in the life cycle of the product that may be stored at ambient ? Users Why ? Properties of this product ? Product without other special requirements ? These factors are likely to affect the future is the standard test , in the process not to fall into the norms of lost , because a good validation specification is definitely not completely copied into outright from a specification , because even the best can not simulate the actual environmental norms demand , that are just vain , only waste more resources and costs. For example : LED lighting designers to design a street lamp to street use in Indonesia , and to develop a low temperature -40 ℃ to verify specifications , and very happy to do so , because the IEC in the proposed low temperature is -40 ℃. But please recall that Indonesia is located near the equator , has a tropical climate, hot and humid all year round , how come the climate -40 ℃ ? Never touched, so the environment to do a product design , will only increase the design cost , because the cost of the design can withstand -40 ℃ ambient LED lighting must be designed to withstand the environment is higher than 0 ℃ 's .
It is a product designer should please return to fundamentals , a good view of their own designed products in order to achieve an efficiency can meet reliability verify the actual demand side .
Finally , because the led outdoor lighting wholesale is different from other electronic products, before and after the verification must be done regardless of the reliability of measurement for their luminescent properties , commonly used calculus curve balls or light meter, to measure the color of LED products (Color temperature), the flux (Luminous flux), light intensity (Luminous intensity), color coordinates (Chromaticity coordinates), CRI (Color rendering), wavelength (Wave length) , etc. , in order to verify the reliability as a basis for judging the results .
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