超声检测信号的高速数字化研究
Research on High-Speed Data Digitization for Ultrasonic Detection
摘 要
介绍一种基于FPGA的高速超声信号的数字化采集方法。从超声检测的实际应用要求出发, 选用了AD公司的AD9054芯片和TI公司的先进先出(FIFO)器件SN74V293, 从硬件实现和工作时序两方面详细地介绍了含有FIFO存储器的A/D采样控制电路的设计方法。该设计方案结构灵活、控制简单且可靠性较高, 能够满足绝大多数超声检测应用场合的要求。
数据采集
系统设计
硬件系统
Ultrasonic testing
Data acquisition
System design
Hardware system
Abstract
A method for designing the high-speed data acquisition system for ultrasonic signals based on FPGA was introduced. SN74V293, the FIFO memory produced by TI, and AD9054 produced by AD were selected from the practical application of ultrasonic testing requirements. The designing method of the A/D sampling control circuit including FIFO memorizer was explained particularly from hardware realization and work timing. It was easy to modify and control, and had high reliability. This method could meet the requirements of the most ultrasonic detection applications.
中图分类号 TG115.28
所属栏目 仪器方法
基金项目 国家自然科学基金资助项目(10574144, 10774164)
收稿日期 2008/4/23
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备注王秀(1983-), 女, 硕士研究生, 研究方向为超声检测系统硬件设计。
引用该论文: WANG Xiu,CHENG Jian-Zheng,LIU Jun. Research on High-Speed Data Digitization for Ultrasonic Detection[J]. Nondestructive Testing, 2009, 31(4): 297～299
王秀,程建政,刘俊. 超声检测信号的高速数字化研究[J]. 无损检测, 2009, 31(4): 297～299
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参考文献
【1】Albert S Birks, Robert E Green.美国无损检测手册·超声卷[M].上海: 世界图书出版公司,1996: 284-318.
【2】Texas Instruments Inc. SN74V293 First-in First-out Memory Data Sheet[M]. US: Texas Instruments Inc,2003.
【3】郑祥明,胡 杰,杨 齐,等.数字化超声仪器中的高速缓存设计[J].无损检测,2007,29(11): 647.
【4】王 诚.Altera FPGA/CPLD设计·基础篇[M].北京: 人民邮电出版社,2005.
【2】Texas Instruments Inc. SN74V293 First-in First-out Memory Data Sheet[M]. US: Texas Instruments Inc,2003.
【3】郑祥明,胡 杰,杨 齐,等.数字化超声仪器中的高速缓存设计[J].无损检测,2007,29(11): 647.
【4】王 诚.Altera FPGA/CPLD设计·基础篇[M].北京: 人民邮电出版社,2005.
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