HUD系统高亮像源及信号处理的研究

发布时间：2018-01-22 00:05

本文关键词： 平视显示器 HUD 合成视景 FPGA　出处：《电子科技大学》2016年硕士论文　论文类型：学位论文

【摘要】：HUD,即平视显示器,上世纪五十年代开始应用于军用飞机。HUD是一种由电子组件、光学组件组成的一种具有平视功能的显示器。HUD的应用使得飞行员可以在保持平视的姿态下获取到飞机的飞行参数以及状态,这一特点极大地提高了飞行员的操纵效率和精确度。在最近几十年里,HUD在民航领域也有着广泛的应用。许多的航空公司将HUD作为客机必须配备的航电设备。因此对HUD的研究有着十分重要的科研意义和实践意义。本论文结合HUD当前的技术发展状况以及未来的发展趋势,对HUD像源以及信号处理做了细致的研究,同时提出了可行的方案并进行实践。本论文的主要研究内容包括以下几个方面:1.在HUD像源部分,本论文选用液晶显示器替代传统的CRT显示器作为HUD的像源。为了能够使得像源在低温环境下正常工作,在液晶屏的表面加一层ITO玻璃。低温环境时加热ITO玻璃,进而升高液晶屏的温度,像源就可以正常工作了;2.在HUD像源的背光部分,本论文选用科锐公司的高亮绿色LED灯作为背光源的发光光源,并采用混联的方式将LED灯连接起来。为了能够使得HUD适应不同的光强的环境,论文通过设计DC/DC稳压电路调整背光源的输入电压,在稳压电路中,两块LM2595_ADJ集成块并联输出,提高电源的输出能力;3.在HUD信息处理器部分,选用Altera公司的FPGA作为核心处理器。HUD信息处理器不仅完成了以图像或字符的形式将飞机参数显示在HUD像源上,而且在低能见度的环境中HUD信息处理器可以将传感器传入夜视画面与上述画面进行叠加并同时输出至HUD像源。本文完成了各模块的设计和调试。解决调试中出现的问题,直至各模块都能够正常工作。完成整个系统的搭建与测试,测试结果是系统能够稳定地工作。
[Abstract]:HUD, or flat-view display, has been used in military aircraft since -50s. HUD is an electronic component. The application of an optical-component display .HUD enables the pilot to obtain the flight parameters and the state of the aircraft while maintaining the level view. This feature has greatly improved the efficiency and accuracy of pilot control. In recent decades. HUD is also widely used in the field of civil aviation. Many airlines regard HUD as the avionics equipment necessary for passenger aircraft. Therefore, the research on HUD is of great significance in scientific research and practice. This paper combines the current technological development situation and the future development trend of HUD. The HUD image source and signal processing are studied in detail. At the same time, the feasible scheme and practice are put forward. The main contents of this thesis include the following aspects: 1. In the part of HUD image source. In this thesis, the LCD is used instead of the traditional CRT display as the image source of HUD, in order to make the image source work normally in the low temperature environment. A layer of ITO glass is added to the surface of the LCD screen. When the ITO glass is heated at low temperature, the temperature of the LCD screen is raised, and the image source can work normally. 2. In the backlight part of the HUD image source, this thesis chooses the bright green LED lamp of Ke Rui Company as the backlight light source. In order to make HUD adapt to different light intensity environment, the paper adjusts the input voltage of backlight by designing DC/DC voltage regulator circuit. In the voltage stabilizing circuit, two LM2595_ADJ integrated blocks are output in parallel to improve the output ability of the power supply. 3.In the HUD information processor section. Using FPGA of Altera Company as the core processor. HUD information processor not only completes the display of aircraft parameters in the form of images or characters on the HUD image source. Moreover, in the low visibility environment, the HUD information processor can superimpose the sensor into the night vision picture and output it to the HUD image source at the same time. In this paper, the design and debugging of each module are completed and the adjustment is solved. Problems in the test. The whole system is built and tested, and the test result is that the system can work stably.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TN873;TN911.7

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