摘要
根据超声信号的固有特点,提出了一种高速超声信号采集系统,将来自超声传感器的高频信号经过高频放大、A/D转换和高速缓存等处理,然后通过PCI总线送入PC机中,解决了超声检测过程中高速大容量数据存储和传输的问题。该系统具有较高的灵活性和可移植性,可用于多种超声信号的采集与处理。
According to the inherent characteristics of ultrasonic signals, the paper proposes a high-speed ultrasonic signal acquisition system. The high frequency signal coming from ultrasonic sensor is transferred to the PC through PCI Bus after being high frequency amplified, A/D converted and high speed accumulated. It solves the problem of high-speed, big capacity storing and transmitting of the spot testing data. The proposed system can be applied in various ultrasonic signal acquisition and processing because of its high flexibility and portability.
出处
《无损检测》
2009年第2期144-146,共3页
Nondestructive Testing
基金
国家自然科学基金资助项目(10574144
10774164)
关键词
超声波检测
数据采集
现场可编程逻辑阵列
模数转换
Ultrasonic detection
Data acquisition
Filed programmable gate array
Analog/digital conversion
