| 徐亮禹,高上凯.数字式超声信号采集处理系统的设计与实现[J].中国医学影像技术,2004,20(8):1281~1283 |
| 数字式超声信号采集处理系统的设计与实现 |
| Design and implementation of a digital system for ultrasonic signal acquisition and processing |
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| DOI： |
| 中文关键词: 超声检查 数字式系统 可编程逻辑器件 |
| 英文关键词:Ultrasonography Digital system Field programmable gate array |
| 基金项目: |
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| 摘要点击次数: 924 |
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| 中文摘要: |
| 作者设计了一种数字式的超声回波信号采集处理系统，采用高速、高精度的AD转换器，通过可编程逻辑器件(FPGA)芯片实现对射频信号的预处理，经过USB 2.0接口把数据传送到PC，在主机中完成对数据的后处理并最终显示处理结果，并给出了一个模拟多普勒血流测量的实例。此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。 |
| 英文摘要: |
| A digital system for ultrasonic signal acquisition and processing is provided in this paper. Ultrasonic echo signal is digitized with a high speed and high resolution AD converters, and then processed in a field programmable gate array (FPGA) chip. Through USB 2.0, demodulated signal is transferred to PC, in which post processing is carried out and final results are displayed. As an example, the results from a simulated blood flow measurement are provided. Compared to the conventional analog systems, the proposed system is more stable and flexible, and could be applied in various ultrasonic signal acquisition and processing. |
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