基于STM32和PCI-104总线的发电厂同步授时卡的设计与实现

发布时间：2018-07-23 15:18

【摘要】：电厂/变电站的一件十分重要的基础工作就是时间同步，，统一精确的时间是作为保证电力系统安全运行和提高电力运行水平的一个重要措施。根据现有的众多同步授时装置，通过分析它们所存在的缺点，并且结合目前比较流行的微处理器，最终我们选取了性能高、成本低、功耗低的专门为嵌入式应用设计的ARMCortex-M3内核的STM32系列处理器来完成数据的处理，在数据传输方面，我们采用了PCI-104总线技术来进行数据的传输，该总线技术能够很好的满足了系统实时性的要求。同步授时模块细分开来，包括GPS接收机和STM32模块。GPS接收机负责接收GPS导航设备统一的RTCM（Radio Technical Commission forMaritime services，即无线电技术委员会海事请求的服务）标准协议NMEA-0183；STM32模块，处理时间信息，用来对GPS接收机传过来的以NMEA-0183形式呈现的时间码进行解码和发出时间信号。该同步授时模块使用了两片大规模逻辑芯片,一个实时时钟芯片和一个STM32微处理器芯片，该模块能够接收主设备发出的各种同步脉冲信号和绝对时标信号，将其转换为200uS的绝对时标刻度数据，以便通过PCI-104总线为PC机提供分辨率为200uS的绝对时标。PCI-104接口电路主要是通过接口芯片PCI9052来实现。本系统的驱动编写采用Driverstudio来编写，以实现板卡系统与上位机的通信；上位机测试软件则采用MFC类来编写。
[Abstract]:Time synchronization is a very important basic work in power plant / substation. Unified and accurate time is an important measure to ensure the safe operation of power system and improve the level of power operation. According to many existing synchronous timing devices, by analyzing their shortcomings and combining with the popular microprocessors, we finally choose high performance and low cost. The STM32 series processors of the ARMCortex-M3 kernel designed for embedded applications with low power consumption are used to process the data. In the aspect of data transmission, we adopt the PCI-104 bus technology to transmit the data. The bus technology can well meet the real-time requirements of the system. The synchronous timing module is subdivided into two modules: the GPS receiver and the STM32 module. The standard protocol NMEA-0183STM32, which is responsible for receiving the unified RTCM (Radio Technical Commission forMaritime services, of the GPS navigation equipment, is the service for maritime claims of the Radio Technical Committee. It is used to decode and send time signals of time codes presented in NMEA-0183 form by GPS receiver. The synchronous timing module uses two large scale logic chips, a real-time clock chip and a STM32 microprocessor chip. The module can receive all kinds of synchronous pulse signals and absolute time scale signals from the main equipment. To convert it to absolute timescale scale data of 200uS in order to provide PC with absolute timescale with resolution of 200uS through PCI-104 bus. PCI-104 interface circuit is mainly realized by interface chip PCI9052. The driver of the system is written by Driverstudio to realize the communication between the card system and the host computer, and the test software of the upper computer is written by the MFC class.
【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】：TM621;TP368.1

【相似文献】