基于USB2.0接口的小型时统终端设计与实现

发布时间：2018-05-21 17:03

本文选题：USB2.0 + 时统　；参考：《电子科技大学》2012年硕士论文

【摘要】：USB（Universal Serial Bus）是一种应用在计算机领域的新型接口技术，最早是由Compaq、Intel、Microsoft等多家公司于1994年11月共同提出的，其目的是简化外设的连接过程，用USB来取代PC现有的各种外围接口，使外设的连接具有单一化、即插即用、热插拔等特点。它的出现使PC机接口的扩展变得更加容易，是计算机外设连接技术的重大变革。本论文在深入细致分析USB2.0接口数据流模型、设备架构和主机软硬件的基础上，选取适当的GPS接收模块和USB2.0接口芯片，采用单片机和CPLD可编程器件技术，设计了各级驱动程序，在一块电路板上集成了GPS接收解码、B码时统解码，能提供微秒级的秒同步、20周同步信号和0.1毫秒级的时间信息，能对时间源是否有效进行判断显示、实现了切换和自动守时的功能，使得时统解码终端进一步小型化、智能化，成功地解决了移动设备独立工作时的时间信息获取问题。主要内容如下： 1．探讨了USB2.0接口规范，分析了USB2.0接口数据流模型，研究了USB2.0接口设备架构，以及USB2.0接口的主机软硬件技术。通过上述研究分析，确立了基于USB2.0接口的小型时统终端的总体设计方案。 2．深入分析了基于USB2.0接口的小型时统终端所需的硬件结构及原理，进行了基于USB2.0接口的小型时统终端的硬件系统方案设计。主要包括：硬件的选择和组成，电原理图设计，布线设计和电路板设计。 3．详细研究了基于USB2.0接口的小型时统终端所需的软件架构及原理，进行了基于USB2.0接口的小型时统终端的软件系统方案设计。主要包括：CPLD程序设计，，单片机固件程序设计，设备驱动程序设计。 4．对基于USB2.0接口的小型时统终端应用情况和测试情况进行了详细论述，研究了基于USB2.0接口的小型时统终端的接口定义、技术指标、软硬件安装、使用范围和故障排除等，进行了测试方法、测试仪器的确认和测试结果的分析。
[Abstract]:USB (Universal Serial Bus) is a new type of interface technology used in the field of computer. It was first introduced in November 1994 by many companies such as Compaq, Intel, Microsoft and so on. The purpose is to simplify the connection process of peripherals and replace the existing peripheral interfaces of PC with USB, so that the connection of peripherals is simplification, plug and play, and hot plug. Its appearance makes it easier to expand the interface of PC, and it is a significant change in the connection technology of computer peripherals.
On the basis of analyzing the USB2.0 interface data flow model, the device architecture and the host software and hardware, this paper selects the appropriate GPS receiving module and the USB2.0 interface chip, uses the MCU and the CPLD programmable device technology to design the driver at all levels, and integrates the GPS reception and decoding on a circuit board, and the B code time decoding. It can provide the decoding of the B code. Microsecond synchronization, 20 week synchronization signal and 0.1 millisecond time information, can judge whether the time source is effective, and realize the function of switching and automatic punctuality, making the time decoding terminal further miniaturized and intelligentized, successfully solving the problem of time information acquisition in the mobile device's independent work.
The main contents are as follows:
1. the specification of USB2.0 interface is discussed, the data flow model of USB2.0 interface is analyzed, the USB2.0 interface device architecture and the host software and hardware technology of the USB2.0 interface are studied. Through the analysis, the overall design scheme of the small time series terminal based on the USB2.0 interface is established.
2. the hardware structure and principle of a small time series terminal based on USB2.0 interface are deeply analyzed. The design of the hardware system of a small time series terminal based on the USB2.0 interface is designed, including the selection and composition of the hardware, the electrical schematic design, the wiring design and the circuit board design.
3. the software architecture and principle of a small time series terminal based on USB2.0 interface are studied in detail, and the software system scheme of a small time series terminal based on USB2.0 interface is designed. It mainly includes: CPLD program design, single chip firmware program design, and device driver design.
4. the application and testing of the small time series terminal based on USB2.0 interface are discussed in detail. The interface definition, technical index, software and hardware installation, use range and troubleshooting of the small time series terminal based on USB2.0 interface are studied. The test method, the confirmation of the test instrument and the analysis of the test result are carried out.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP334.7

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