多通道数据存储器系统关键技术研究

发布时间：2018-07-25 07:02

【摘要】：本文针对飞行器系统测试设备研制的要求，设计并研制了某型多通道数据存储系统。该数据存储系统主要完成飞行器飞行试验过程中的多个通道模拟量及数字量信号的采集与存储，并在试验结束后通过回收数据器，导出试验中采集的数据。本文首先叙述了课题的来源及其研究的目的、意义，然后介绍了国内外数据存储系统的研究现状及其发展趋势。从飞行器测试所需的功能指标出发，按照模块化设计思想阐述了数据存储系统的组成原理与实现方案，并详细介绍了系统硬件关键技术与系统逻辑关键技术的研究与设计，，最后通过测试验证了数据存储系统的性能指标，对该系统的进一步改进工作做出了展望。该数据存储系统由地面设备、飞行器上设备构成。地面设备包括地面综合测试台与地面转接器；飞行器上设备包括采编器与存储器。其中，地面综合测试台主要完成如上位机命令上传、接收飞行器上设备高速下传数据、通过输出各种可编程的模拟/数字量来测试飞行器上设备工作情况等工作；地面转接器负责转发中继上传的命令与下发的数据，同时完成光纤信号转接双绞电缆与电流环信号的功能；采编器完成31路缓速模拟信号、1路高速模拟信号及1路PCM数字信号的采集与接收，在其内部进行混合编帧后，一路转换成LVDS串行数据下传至地面设备，另一路直接送入存储器存储。系统以可编程逻辑器件FPGA为主控制器，通过接口型单片机提供系统与外界的接口并与FPGA通信以交换命令和数据。全系统硬件集成度高、功能灵活可变、工作可靠。存储器以作为存储介质，容量较大且为非易失性存储器，数据可长期保持，飞行参数可全程记录。数据存储系统采用高可靠性LVDS链路技术与地面综合测试系统通信，传送地面控制计算机下发的指令和高速下传的实时采编数据、远程读取存储器数据。本文中详细介绍了搭建高可靠性LVDS通信链路的主要设计要点与注意事项。本数据存储系统已应用于飞行试验。试验结束后成功回收存储器，并获得数据。
[Abstract]:In this paper, a multi-channel data storage system is designed and developed to meet the requirements of the development of test equipment for aircraft system. The data storage system mainly completes the acquisition and storage of the analog and digital signals of multiple channels during the flight test of an aircraft. After the test, the data collected in the experiment is derived by a data recovery device. This paper first describes the source of the subject, the purpose and significance of the research, and then introduces the research status and development trend of the data storage system at home and abroad. Based on the functional indexes needed for aircraft testing, the principle and implementation of data storage system are described according to the modular design idea, and the research and design of system hardware key technology and system logic key technology are introduced in detail. Finally, the performance index of the data storage system is tested and the further improvement of the system is prospected. The data storage system consists of ground equipment and aircraft equipment. The ground equipment includes a ground integrated test table and a ground adapter; the aircraft equipment includes a collector and a memory. Among them, the ground comprehensive test bench mainly completes the work such as uploading the command from the upper computer, receiving the high-speed data from the equipment on the aircraft, and testing the working condition of the equipment on the aircraft by outputting various programmable analog / digital quantities. The ground adapter is responsible for forwarding the commands and data transmitted by the relay, and accomplishing the function of connecting the fiber optic signal to the twisting cable and the current loop signal at the same time; The acquisition and reception of 31 slow speed analog signals and 1 PCM digital signal are completed. After mixed framing, the data are converted to LVDS serial data and transmitted to the ground equipment. The other way directly into memory storage. The system takes the programmable logic device FPGA as the main controller, provides the interface between the system and the outside world and communicates with the FPGA to exchange commands and data through the interface microcontroller. The whole system hardware integration is high, the function is flexible and variable, the work is reliable. The memory is a storage medium with large capacity and non-volatile memory. The data can be maintained for a long time and the flight parameters can be recorded in the whole process. The data storage system uses the high reliability LVDS link technology to communicate with the ground integrated test system, transmits the instruction from the ground control computer and the real-time data collection and compilation of the high speed transmission, and reads the memory data remotely. In this paper, the main design points and points for attention of setting up high reliability LVDS communication link are introduced in detail. This data storage system has been applied to flight test. At the end of the experiment, the memory was recovered and the data was 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

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