【作者】 杨帅；

【导师】 孙杰； 韩国民；

【作者基本信息】 天津理工大学 ， 电子信息， 2023， 硕士

【摘要】 随着信息技术的高速发展,人们对信息数据的处理速度与处理量有了更高的要求。液晶空间光调制器(LCSLM)是一种光学器件,其利用液晶的光电效应,通过对液晶施加电刺激从而达到对光场的调制,LCSLM在光互连、光计算、数字全息、激光等领域都有着广泛的应用,是未来高速数据处理的有效途径。目前LCSLM的输入信号均是由PC机提供的VGA或HDMI等通用视频信号,且需要本地线缆连接,这给LCSLM的使用带来了不便。为了降低使用LCSLM的硬件成本,增加LCSLM的使用的灵活性,本文提出并设计了一种基于STM32控制的视频信号传输系统。该系统可以直接为LCSLM提供输入信号,也可以通过无线方式远程提供输入信号,为LCSLM的使用提供了方便。同时,该系统还可以作为普通的无线视频传输系统,用于图像采集和视频监控等领域。本文主要的工作内容如下:(1)在分析LCSLM的工作原理及应用领域的基础上,设计了基于嵌入式芯片STM32的视频采集与传输系统,为LCSLM提供输入信号;(2)完成了系统硬件设计及软件程序的编写,实现了将采集到的视频信号转换为VGA信号作为LCSLM的输入信号,或者通过无线远程传输给LCSLM;(3)通过搭建硬件平台并使用Qt软件编写无线测试上位机,对系统的视频图像信号输出进行了测试,验证了系统为LCSLM提供输入信号的可行性。更多还原

【Abstract】 With the rapid development of information technology,people have higher requirements for the processing speed and processing capacity of information data.Liquid crystal spatial light modulator(LCSLM)is an optical device,which utilizes the photoelectric effect of liquid crystal to achieve the modulation of light field by applying electrical stimulation to liquid crystal.LCSLM is widely used in optical interconnection,optical computing,digital holography,laser and other fields,which is an effective way for high-speed data processing in the future.Currently,the input signals of LCSLMS are common video signals,such as VGA or HDMI,provided by PCS,and require local cable connections.As a result,LCSLMS are inconvenient to use.n order to reduce the hardware cost and increase the flexibility of LCSLM,a video signal transmission system based on STM32 control is proposed and designed in this thesis.The system can directly provide input signals to LCSLMS or remotely provide input signals wirelessly,facilitating the use of LCSLMS.At the same time,the system can also be used as a common wireless video transmission system for image acquisition and video surveillance.The main work content of this paper is as follows:(1)Based on the analysis of the working principle and application field of LCSLM,a video acquisition and transmission system based on embedded chip STM32 is designed to provide input signals for LCSLM;(2)Completed the system hardware design and software program writing,realized the conversion of the collected video signal into VGA signal as the input signal of LCSLM,or transmitted to LCSLM through wireless remote;(3)By building a hardware platform and using Qt software to write a wireless test host computer,the video image signal output of the system was tested,and the feasibility of the system providing input signals for LCSLM was verified.更多还原