轻便摩托车LED准直照明系统的研制

发布时间：2018-01-15 13:41

本文关键词：轻便摩托车LED准直照明系统的研制　出处：《电子科技大学》2014年硕士论文　论文类型：学位论文

【摘要】：LED的发明具有划时代的意义。早在2001年,LED在用于车辆照明就受到大量的关注,随着材料和工艺的不断发展,LED的发光效率不断提高,已经能够替代传统的车辆照明光源,用于车辆照明。本文针对轻便摩托车的前照灯,利用大功率白光LED替代传统的卤素灯,设计并开展了LED照明系统的测试。本文主要针对以下几个方面进行了研究:1)从光度学和色度学等方面深入探讨了将LED用于摩托车前照灯照明的可行性。由于LED发光呈朗伯体分布,不能直接用于照明,因此对LED进行二次光学设计是实现轻便摩托车照明的关键。本文通过利用聚甲基丙烯酸树脂(PMMA)为透镜材料,结合非成像光学的理论,利用ZEMAX光学设计软件,实现了LED准直照明透镜的设计和优化,并利用光学照明仿真软件TRACEPRO对其进行光学模拟仿真,分析准直透镜的可行性。同时根据轻便摩托车前照灯配光标准(GB19152-2003)的要求,将五个相同的准直透镜搭配,形成透镜组,对光能进行重新分配,使其达到GB的光能分配要求。2)由于大功率的LED体积比较小,相对单位体积散热高,几乎80%的能量以热量的形式散发。如果不经过设计就直接使用LED,可能造成LED使用寿命的降低,甚至被烧坏。因此,在对准直透镜的封装结构进行设计的基础上,本文进行了LED的散热设计,通过使用合理的翅片散热结构,加速LED光源所产生的热量散失。通过利用ANSYS有限元仿真软件对散热翅片进行仿真分析,得到散热结构的参数,并结合试验验证,使LED在允许的环境条件下,能够正常的工作。3)LED的驱动电路的性能直接关系到LED的寿命,也影响到整个照明系统的性能。因此,本文根据轻便摩托车前照灯的实际需求,设计了低压高效的LED的驱动电路,使整个照明系统能够正常的工作,封装处理后完成整个系统的标准测试。总之,本文在准直透镜的设计优化上,利用了光学设计软件ZEMAX,同时结合非自由曲面,极大的提高了LED光能的利用率,实现了节能环保的要求。最后通过GB试验方法的验证,确定照明系统能够达到国家规定的光能分配标准,完成了整个照明光学系统的设计。
[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.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U483;TM923.34

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