LED failure analysis is the process of analyzing LED failures. In order to understand the cause of equipment failure, it is necessary to conduct a comprehensive study of the various components of the LED outdoor wall washer. First, we must analyze the failure time of the wall washer. For components close to the design life, decommissioning will be analyzed. Other components will consider whether to conduct photoelectric parameter test, then conduct appearance test in case of open circuit failure. If the open circuit fails, an optical microscope, metallurgical microscope, etc. will be used for visual inspection. Analyze possible defects. If the pin bonding fail, an electron probe microscope will be used to analyze the cause of the pin failure. Perform infrared testing on components to find internal defects. LED wall washer manufacturers perform fixed-point analysis tests on defective parts to determine the cause of the failure.
In the failure analysis of wall lamps, attention should be paid to the relationship between various failure modes. In the analysis process, it is necessary to identify combine the failure time application environment, find a suitable method of differentiation. In the research process, it is very important to improve the fault detection conditions find the cause of the fault, but it is also more important to recognize the importance of fault prevention. Therefore, use the failure analysis method to determine the cause of the wall lamp failure, find out the cause of the failure, avoid repetition. The same failure type method is the purpose of failure analysis.
For wall lamps, there are currently two control methods: internal control external control. Internal control equipment, no external controller is required. The control system is designed by the interior designer of Xi'an wall lamp. The degree of influence cannot be changed. The external control effect of the external controller can be changed by adjusting the main control key. Usually in large projects, customers ask them to influence change themselves. We use external control. There are many direct support DMX512 control systems for wall washing systems.
Generally, 1W 3W LEDs are used as light sources. However, due to the immature development of information technology, companies in the Chinese market can usually use 1W. Because 3W generates a lot of heat, it dissipates heat faster light attenuates faster. When choosing LED high-power wall washer, these parameters must be considered. In order to realize the second social distribution of the light emitted by the LED tube to reduce the problem of light loss increase the illuminance, each LED tube of the wall washer is equipped with a high-efficiency research lens made of PMMA.