随机波浪数据采集与处理技术的研究  

Random Wave Study of Data Acquisition and Processing

作　　者：孙颖 许德浩 

机构地区：[1]天津中环自动化技术控制设备有限公司,天津300384

出　　处：《仪器仪表用户》2016年第1期42-46,共5页Instrumentation

摘　　要：本文设计采集板主要是CPLD为核心和相关的协议来实现计算机通过并口EPP控制其他芯片的通信。本文设计了多路采集系统,提高采集的速度。利用CPLD逻辑设计控制AD模数转换器和多路数字控制模拟开关。CPLD的开发工具是QuartusⅡ软件,它包含知识产权模块,加快了设计的进程,提高系统性能。由于Windows对系统底层操作采取了屏蔽的策略,增强型并行接口EPP不能直接读取CPU中的I/O控制器中寄存器的数据,只有借助Win Io来实现对这些寄存器的访问,利用Win Io函数库来实现对PC机并行端口的操作,从而实现与外部设备的数据传输。对于随机采集到的数据,它的变化形式是预先无法确定的。因此这种变化必须用随机函数加以描述。本文使用经典谱估计的周期图法来计算出随机函数的特征。然后用Visual C++6.0对话框工程编辑界面,用VC语言编写消息函数,完成数据采集处理的界面。In this article, it is CPLD as the core and related protocols to realize computer control the chip through parallel port EPP in acquisition circuit. The multi-channel acquisition system is designed, which improve the speed of acquisition. The logic design of the CPLD controls AD converter and multiplexers digitally-controlled analog switches. Quartus II software that is development tool of the CPLD, contains the IP （Intellectual Property） module, which accelerate the process of the design and improve the system performance. Due to the Windows adopted a strategy of shielding for the system＇s underlying, EPP can＇t directly read data in the registers of I/O controller. Only WinIo is applied to achieve access to the register. The WinIo library can realize the operation for the PC parallel port, so as to realize data transfer with external devices.In this article, the periodogram of the classic spectrum estimation is used to calculate the characteristic of the random function. Then interface of data collection is compiled in the dialog project with Visual C ＋ ＋ 6.0, and the message function is written with VC language, which complete interfaces of the data collection and processing.

关 键 词：波浪 数据采集硬件设计 处理数据方法 CPLD EPP 

分 类 号：TH[机械工程]