基于屏幕测量法的弯道照明试验方法研究
2017-06-12谭功伟武华堂陈萍王丹让松
谭功伟+武华堂+陈萍+王丹+让松



摘 要:针对汽车弯道照明的现状,讨论了整车和零部件的测试标准,建立了整车试验的数学模型,提出了在屏幕上进行整车弯道照明试验,取得了近光转动限值和实际转动角度的计算公式,总结了灯具配光性能的试验方法。采用样车试验结果对屏幕法进行验证,结果表明该方法简单有效,可作为检测机构的试验方法和主机厂评价的手段,同时分析了各种弯道照明模式的特点,从而为国内汽车弯道照明的设计提供帮助。
关键词:弯道照明;模式; 配光性能; 明暗截止线; 屏幕
中图分类号:U270.1+4 文献标识码:A 文章编号:1005-2550(2017)03-0074-06
Research on Test Method of Bend Lighting Based on Screen Measure
TAN Gong-wei, WU Hua-tang, CHEN Ping, WANG Dan, RANG Song
( National Automobile Quality Supervision Test Center (Xiangyang), Xiangyang441004, China )
Abstract: Based on the situation of bend lighting, the test standards of the vehicle and parts are discussed, found the mathematical model of the vehicle test, and puts forward the method of vehicle test with screen, obtain calculation formula of limit value and rotation Angle of practical, Summarizes the test method of photometric characteristics for lamps. Using the test results of the sample vehicle on the screen for validation, the results show that the screen method is simple and effective, can be used as evaluation means and test method for manufacturer, At the same time analyzed the characteristics of various kinds of bend lighting mode, thus it offers help for bend lighting design in China.
Key Words: Bend lighting; Mode; Photometric characteristics; Cut-off line; Screen
前 言
當夜间汽车在弯道上行驶时,常常会在弯道内侧出现照明“盲区”,这种现象极大地影响了夜间的行车安全。随着电子电气技术的发展,汽车灯具越来越智能化,汽车弯道照明便应运而生,这一难题也就迎刃而解。弯道照明系统一般由车速传感器、方向盘角度传感器、电子控制单元(ECU)、驱动电机、前照灯等组成,通过CAN总线进行数据传输。当夜间弯道行车时,弯道照明功能能够根据车速大小以及方向盘转向角度的大小等信息,自动调整近光光束的照射方向,使之自动转向弯道内侧,或者通过点亮附加光源的方法,提高弯道内侧的光照度,减少照明“盲区”,确保在弯道行车时的高能见度。如图1所示为普通照明效果,由于弯道“盲区”的存在,驾驶员很难发现路边的动物,当开启弯道照明后,视野便得到了很大的改善,如图2所示路边的动物清晰可见。……
