便携式数字化超声检测仪  

Portable Digital Ultrasonic Testing Device

作　　者：习俊梅[1] 朱杰斌[1] 黄良兵[2] 李健[2] 

机构地区：[1]南昌工程学院机械与动力工程系,江西南昌330099 [2]西安科技大学机械工程学院,陕西西安710054

出　　处：《仪表技术与传感器》2007年第9期18-20,共3页Instrument Technique and Sensor

摘　　要：为了提高超声检测的效率及可靠性,借助超声检测技术、计算机技术、电子技术、信号处理等技术,研制了一种性价比高的数字超声波检测仪器。检测仪以嵌入式计算机为核心,利用FPGA强大的逻辑处理、USB接口数据通信功能,实现了超声检测的信号发射接收、采集处理、存储显示、传输输出。实验结果表明:超声检测仪数据传输速率快、精度高、性能稳定可靠、便于携带,具备热插拔性,其总增益为120 dB,最小调节步长为1 dB,探测灵敏度余量>60 dB,动态范围为29～31 dB,为进一步实现超声检测图像化、智能化、自动化奠定了良好的基础。In order to improve the efficiency and reliability of the ultrasonic-testing, a type of ultrasonic-testing instrument of high ratio of performance to cost was developed successfully. With the help of embedded computer and taking full use of the traditional ultrasonictesting device, USB, electronic technology and digital signal processing, the system realized data collection, save, display, analysis and pro- cessing. It has the advantage of small, low-cost, plug and play, stability, high rate, eficiency and reliability. A very good foundation for the developing of imaging, intelligent and automation of ultrasonic-testing was established by this device.

关 键 词：嵌入式计算机 超声检测 USB FPGA 数据采集 

分 类 号：TP216[自动化与计算机技术—检测技术与自动化装置]