基于Flash的高速数据记录装置关键技术研究

发布时间：2019-02-23 23:47

【摘要】：数据记录设备已广泛地应用于各行各业中，包括航空航天、雷达、通信、工业和医疗卫生等。由于雷达的研制水平逐步成熟，对于目标物体的准确定位需要记录更多的参数，例如目标的形态、位置、运动状态等。为了获得准确、高清的目标图像，雷达回波信号采集时会在较短的时间内会产生大量的数据，对记录器的存储带宽和容量都提出了进一步的要求，使得高速、大容量数据记录器的研制成为一项重要任务。随着半导体技术的发展，Flash以优异的性能成为记录器的首选存储介质，本文提出了一种基于Flash的高速数据记录器的设计。该设备具备体积小，重量轻和抗高冲击过载的特点，能够适应条件恶劣的高空试验环境。首先，本文介绍了半导体存储介质，调研了国内外固态记录器的发展现状，给出了任务书中记录器的各项指标，阐述了记录器的组成模块和工作原理，并详细介绍了接口模块和存储模块的原理框图和功能分析。其次，对于研究过程中存在的关键问题，如Flash的高速存储实现过程、FPGA内部二级缓冲和可靠性设计，，作了详细的分析和说明。再次，根据调试过程中出现的几个具有代表性问题，给出了具体思路和解决方法，有助于更深入地了解整个设计过程。由上位机、测试台、记录器和电缆网形成的闭环测试系统，完成了对记录器的功能测试与验证。最后，总结了本文的研究内容，针对设计中出现的问题及不足，做了今后的展望工作。目前，该数据记录器产品已完成交付，可以成功地用于记录飞行试验过程中雷达产生的高速视频回波、图像遥测数据，并在飞行器落地后实现记录器硬回收，能够准确地获取记录的飞行参数。
[Abstract]:Data recording equipment has been widely used in a variety of industries, including aerospace, radar, communications, industry and health care. Due to the maturity of radar research and development, more parameters such as the shape, position and moving state of the target must be recorded for the accurate location of the target object. In order to obtain accurate and high-definition target image, radar echo signal will produce a large amount of data in a relatively short time. The development of large capacity data recorder has become an important task. With the development of semiconductor technology, Flash has become the preferred storage medium for recorder with excellent performance. This paper presents a design of high-speed data recorder based on Flash. The equipment has the characteristics of small volume, light weight and high impact overload, and can adapt to the harsh conditions of high altitude test environment. First of all, this paper introduces the semiconductor storage medium, investigates the development of solid state recorder at home and abroad, gives the various indexes of the recorder in the task book, and expounds the composition module and working principle of the recorder. The principle block diagram and function analysis of interface module and storage module are introduced in detail. Secondly, the key problems in the research process, such as the high-speed storage implementation of Flash, the internal two-stage buffer and reliability design of FPGA, are analyzed and explained in detail. Thirdly, according to several representative problems in the debugging process, the concrete ideas and solutions are given, which is helpful to understand the whole design process more deeply. The closed loop test system, which is composed of upper computer, tester, recorder and cable network, has completed the function test and verification of the recorder. Finally, the research content of this paper is summarized, and the future prospect work is made in view of the problems and shortcomings in the design. At present, the product of the data recorder has been delivered, which can be used successfully to record the high-speed video echo and image telemetry data generated by radar during flight test, and to realize the hard recovery of the recorder after the aircraft lands. The recorded flight parameters can be accurately obtained.
【学位授予单位】：中北大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP333

【参考文献】