Measuring Method And Its Measuring System Established On Minority Carriers In Silicon

With the development of the society and the progress of science and technology, LEDtechnology is developing by leaps and bounds. It gradually entered the field of indoor lightingwith high light efficiency, light color, adjustable brightness, easy control, small volume, longlifetime, green environmental protection, rich color, etc. According to the foreign well-knownmarket research data, it is shown that the luminous efficiency of high-power of W-LED incommercial applications has been reached130lm/W. In comparison with the luminousefficiency of LED only, it is more than twice of ordinary energy-saving lamps, far more thanincandescent and halogen lamps. Market data shows that LED products for indoor lighting havegood stability and reliability. There is huge potential in the field of indoor lighting of the LED.It is significant for the LED indoor lighting key technology research.Firstly, this paper makes an analysis of the research of the development of LED keytechnologies and the present situation at home and abroad. By introducing of the main opticaldesign indicators of the indoor lighting and situation in the technology of color-dimming andlighting dimming at home and aboard, this paper puts forward a new feasibility applied inindoor lighting with an adjustable color temperature for its potential advantages and analysisthe advantage and disadvantage by the experiment study. Eventually, it has been verified. Toachieve the high reliability and the cost-effective in LED indoor lighting, occupied market ratein LED indoor lighting lamps, the article puts forward the concept of LED lighting modules andmake a selection and design in the color light module, matrix arrangement, radiator, and modulepower supply, and other important parts and key links. Finally with the in-depth discussion oftoday’s indoor lighting intelligent control technology, it has been completed the W-LED indoorlighting wireless control system and developed a working prototype on the basis of variouscomponents of the module.This paper focuses on several key technologies used in LED indoor lighting. It is realizedin the true sense of a variable color temperature of LED indoor lighting by the analysis oflighting and thermal properties. It can effectively solve the problem such as glare, heatdissipation, lifetime and cost in lighting lamps and lanterns. We design a kind of white light LED wireless control system on the basis of both. It has been realized a practice in "scenemode" of indoor lighting intelligent system based on visual activity. It has the profoundinfluence in LED indoor lighting developing.