enough; Lines of the ground does not level off; When parking lights and the level of the instrument headlamp distance is not accurate; The longitudinal axis and inspection instrument vehicle guide not vertical; Instrument range is not accurate. These are caused by the unqualified headlamp factors, among which light inspection instrument because every year by special inspection agency calibration and qualified rear can use, therefore, the vehicle itself problem is the main reason. Vehicles unit, drivers and keep the repair personnel should be paid much attention to. Automobile lamps adaptive system to, corner sensor, abundant between front axle, control unit altitude sensor (ECU), and stepper motor of headlights. The basic principle is: when the automobile longitudinal swing, ECU acquisition sensor signal, through the internal control strategy, control the stepping motor rotation, thus promote headlamps turned the corresponding point of view, the main design to car longitudinal swing automobile lamps automatic adjust the Angle made drivers can have greater vision, reduce the driver's blind area, and avoiding risk, improve the security and stability of the car, this is very important.

With more and more bright lights at night at the same time, improve visibility, how to avoid strong light onto the driveway, and to cause to car drivers of smooth shadow produces visual residual, losing the ability to identify and road conditions should be a body in a dangerous situation, so

can effective improve the scope of the automotive lighting and Angle, is improve the night driving safety important issue. In addition to the steering wheel steering Angle according to the head lamp or so direction adjustment, reduce the parameters of the night vision blind Angle, but also must pay attention to the fluctuation level, because body vulnerable to load average or not is the way, ups and downs changes, resulting in body produce Angle, joint influence round the point of view of the project lamp. Pledge lamp too high, easy to make projection Angle to car drivers have dazzle light problem, when cast Angle is too low, the line of sight of driving itself could be a deficiency, or less than myself or others will be exposed to danger, so level (elevation Angle) control is necessary to maintain the stability of the lighting Angle. The head lamp level control from the early passive manual adjustment, half active into the present automatic type, half is active in a car the adjustment, automatic type is braking can also do real-time adjustments. Level automatically adjust the system based on the foundation of the original setting Angle, through the height difference sensors detect body under circumstances, calculate the light cast Angle offset, upwards or to adjust HID DengZu, maintain proper illuminate Angle. Advanced level automatically adjust the Angle projection system, will also make adjustment screw with speed. A high speed will further, in beam to real time see the greater distance road conditions, slow speed, lighting Angle to correction, avoid exposure

to the driveway. Intelligent lamp is the lamp of the technology another development the mainstream. Adaptive headlights integrated operation speed, steering Angle and the degree of body forward has happened to adjust the parameters as the direction of the light source, so according to strictly can only be regarded as passively accept driver needs to adjust the lighting Angle, and active steering head lamp still had some differences. Released in 2008 and is expected to active the head lamp system, to receive more information to determine the appropriate again after the head lamp brightness and Angle projection, to the so-called active safety state. In addition to the existing wheel shaft height difference sensors, steering sensors,, the electronic control unit can order early to drive system, adjust the lighting Angle and light type.

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汽车前照灯自适应发展综述

随着社会的发展和人们生活水平的不断提高，人们对汽车的要求已不仅仅局限于性能，成本，而是越来越多的要求现代汽车更加安全，更加环保，更加人性化。汽车生产商们也正在用更安全、更环保、设计更精美以及更省油料等优点来吸引用户。而同时，新车款型也必须符合最新的规定，这就导致了新技术不断得到应用。作为汽车的三大安全件之一，汽车照明系统是最主要的主动式安全装置，对传统汽车照明系统的改进和创新也日益成为全世界汽车厂商研究的热点问题。

因此，如何使汽车照明智能化，驾车更安全，更舒适就成为一个十分紧迫而又有重大现实意义的课题。传统的汽车照明系统主要由前照灯系统，信号照明系统，车内照明系统三大部分组成。随着科技的进步，传统照明系统也经历了长足的发展，相应的交通法规也越来越健全，前照灯系统就经历了从最初的煤油灯到白炽灯，卤素灯到现在的气体放电灯的发展过程，信号照明系统从最初的手提煤油灯发展到现在普遍应用的LED信号灯，车内照明系统更是种类越来越多，越来越人性化。但是实际的使用中，传统的前照灯系统存在着诸多问题。例如，现有近光灯在近距离上的照明效果很不好，特别是在交通状况