本文關(guān)鍵詞：輕便摩托車LED準(zhǔn)直照明系統(tǒng)的研制　出處：《電子科技大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 非成像光學(xué) 準(zhǔn)直照明系統(tǒng) 光學(xué)設(shè)計 熱學(xué)設(shè)計

【摘要】：LED的發(fā)明具有劃時代的意義。早在2001年,LED在用于車輛照明就受到大量的關(guān)注,隨著材料和工藝的不斷發(fā)展,LED的發(fā)光效率不斷提高,已經(jīng)能夠替代傳統(tǒng)的車輛照明光源,用于車輛照明。本文針對輕便摩托車的前照燈,利用大功率白光LED替代傳統(tǒng)的鹵素?zé)?設(shè)計并開展了LED照明系統(tǒng)的測試。本文主要針對以下幾個方面進行了研究:1)從光度學(xué)和色度學(xué)等方面深入探討了將LED用于摩托車前照燈照明的可行性。由于LED發(fā)光呈朗伯體分布,不能直接用于照明,因此對LED進行二次光學(xué)設(shè)計是實現(xiàn)輕便摩托車照明的關(guān)鍵。本文通過利用聚甲基丙烯酸樹脂(PMMA)為透鏡材料,結(jié)合非成像光學(xué)的理論,利用ZEMAX光學(xué)設(shè)計軟件,實現(xiàn)了LED準(zhǔn)直照明透鏡的設(shè)計和優(yōu)化,并利用光學(xué)照明仿真軟件TRACEPRO對其進行光學(xué)模擬仿真,分析準(zhǔn)直透鏡的可行性。同時根據(jù)輕便摩托車前照燈配光標(biāo)準(zhǔn)(GB19152-2003)的要求,將五個相同的準(zhǔn)直透鏡搭配,形成透鏡組,對光能進行重新分配,使其達到GB的光能分配要求。2)由于大功率的LED體積比較小,相對單位體積散熱高,幾乎80%的能量以熱量的形式散發(fā)。如果不經(jīng)過設(shè)計就直接使用LED,可能造成LED使用壽命的降低,甚至被燒壞。因此,在對準(zhǔn)直透鏡的封裝結(jié)構(gòu)進行設(shè)計的基礎(chǔ)上,本文進行了LED的散熱設(shè)計,通過使用合理的翅片散熱結(jié)構(gòu),加速LED光源所產(chǎn)生的熱量散失。通過利用ANSYS有限元仿真軟件對散熱翅片進行仿真分析,得到散熱結(jié)構(gòu)的參數(shù),并結(jié)合試驗驗證,使LED在允許的環(huán)境條件下,能夠正常的工作。3)LED的驅(qū)動電路的性能直接關(guān)系到LED的壽命,也影響到整個照明系統(tǒng)的性能。因此,本文根據(jù)輕便摩托車前照燈的實際需求,設(shè)計了低壓高效的LED的驅(qū)動電路,使整個照明系統(tǒng)能夠正常的工作,封裝處理后完成整個系統(tǒng)的標(biāo)準(zhǔn)測試�？傊�,本文在準(zhǔn)直透鏡的設(shè)計優(yōu)化上,利用了光學(xué)設(shè)計軟件ZEMAX,同時結(jié)合非自由曲面,極大的提高了LED光能的利用率,實現(xiàn)了節(jié)能環(huán)保的要求。最后通過GB試驗方法的驗證,確定照明系統(tǒng)能夠達到國家規(guī)定的光能分配標(biāo)準(zhǔn),完成了整個照明光學(xué)系統(tǒng)的設(shè)計。
[Abstract]:The invention of LED has epoch-making significance. As early as 2001, it has received a lot of attention in vehicle lighting. With the continuous development of materials and technology, the luminous efficiency of LED has been improved. Has been able to replace the traditional vehicle lighting sources for vehicle lighting. This paper for mopeds headlights, using high-power white LED instead of traditional halogen lamps. The test of LED lighting system is designed and carried out. This paper mainly studies the following aspects: 1). In this paper, the feasibility of using LED in motorcycle headlight lighting is discussed from the aspects of photometry and chromaticity. Because of the Lambert body distribution of LED luminescence. Therefore, the secondary optical design of LED is the key to realize the lighting of mopeds. In this paper, polymethacrylic resin (PMMA) is used as lens material. Based on the theory of non-imaging optics, the design and optimization of LED collimation illumination lens are realized by using ZEMAX optical design software. The optical lighting simulation software TRACEPRO is used to simulate it. The feasibility of collimation lens is analyzed. According to the requirement of light distribution standard GB19152-2003for headlamp of mopeds, five collimating lenses are collocated to form lens group. The light energy is redistributed to meet the light energy distribution requirement of GB. 2) because the volume of high power LED is relatively small, the heat dissipation is high relative to unit volume. Almost 80% of the energy is distributed in the form of heat. If LEDs are used directly without design, the life of LED may be reduced or even burned out. On the basis of designing the packaging structure of collimating lens, the heat dissipation design of LED is carried out, and the reasonable fin heat dissipation structure is used. The heat loss caused by accelerating LED light source is accelerated. The parameters of the heat dissipation structure are obtained by using the ANSYS finite element simulation software to obtain the parameters of the heat dissipation structure, and the results are verified by experiments. The driving circuit performance of LED can work normally under the permitted environment. The performance of the driving circuit is directly related to the life of LED and the performance of the whole lighting system. According to the actual demand of the headlamp of mopeds, the driving circuit of low-voltage and high-efficiency LED is designed in this paper, so that the whole lighting system can work normally and complete the standard test of the whole system after packaging and processing. In this paper, in the collimation lens design optimization, the use of the optical design software ZEMAX, combined with the non-free surface, greatly improve the utilization of LED light energy. Finally, through the verification of GB test method, it is determined that the lighting system can meet the national standard of light energy distribution, and the design of the whole lighting optical system has been completed.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U483;TM923.34

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本文編號：1428612