基于FPGA先进并行计算的全聚焦方法的高效加速

IF 0.8 4区 工程技术 Q4 ACOUSTICS
Chong Wang, Jie Mao, Tao Leng, Ze Zhuang, Xiaomin Wang
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引用次数: 10

摘要

与传统的超声相控阵技术相比,全聚焦技术提高了分辨率和精度。本文提出了一种先进的现场可编程门阵列并行结构,可显著提高TFM成像效率。研究了飞行时间实时并行计算、多像素并行生成、像素阵列希尔伯特变换等技术。该结构实现了TFM成像中每个像素飞行时间的实时计算和双像素并行生成。与传统方法相比,TFM成像的效率大大提高,同时有效降低了元素和像元数量增加对成像的影响。利用仿真数据验证了该体系结构,实验结果证实了效率仅与脉冲重复频率和元件数有关,达到了TFM检测的物理极限。该方法还表明,当像素数增加时,可以保持较高的效率,并且可以实现严格的实时成像。为TFM快速检测提供了一条有效途径。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Efficient Acceleration for Total Focusing Method Based on Advanced Parallel Computing in FPGA
Total focusing method (TFM) has improved resolution and accuracy over traditional ultrasonic phased array technology. In this paper, an advanced parallel architecture in field programmable gate arrays is suggested to significantly accelerate the imaging efficiency of TFM. Several techniques are investigated, including the real-time concurrent calculation for time of flight, parallel generation of multiple pixels, and the Hilbert transform to the pixels array. This architecture achieves the real-time computation of the flight times for each pixel and the concurrent generation of double pixels for TFM imaging. Compared to conventional methods, the efficiency of TFM imaging is greatly accelerated and the impact from the increase of element and pixel number is also effectively reduced. Simulation data was used to verify the architecture, and experiment results confirmed that the efficiency was only related to the pulse repeated frequency and element number, which reaches to the physical limitation of TFM inspection. This approach also shows that high efficiency is maintained when pixel number increases, and a strict real-time imaging can be achieved in this architecture. As a result, an effective way for the fast inspection with TFM is provided.
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来源期刊
International Journal of Acoustics and Vibration
International Journal of Acoustics and Vibration ACOUSTICS-ENGINEERING, MECHANICAL
CiteScore
1.60
自引率
10.00%
发文量
0
审稿时长
12 months
期刊介绍: The International Journal of Acoustics and Vibration (IJAV) is the refereed open-access journal of the International Institute of Acoustics and Vibration (IIAV). The IIAV is a non-profit international scientific society founded in 1995. The primary objective of the Institute is to advance the science of acoustics and vibration by creating an international organization that is responsive to the needs of scientists and engineers concerned with acoustics and vibration problems all around the world. Manuscripts of articles, technical notes and letters-to-the-editor should be submitted to the Editor-in-Chief via the on-line submission system. Authors wishing to submit an article need to log in on the IJAV website first. Users logged into the website are able to submit new articles, track the status of their articles already submitted, upload revised articles, responses and/or rebuttals to reviewers, figures, biographies, photographs, copyright transfer agreements, and send comments to the editor. Each time the status of an article submitted changes, the author will also be notified automatically by email. IIAV members (in good standing for at least six months) can publish in IJAV free of charge and their papers will be displayed on-line immediately after they have been edited and laid-out. Non-IIAV members will be required to pay a mandatory Article Processing Charge (APC) of $200 USD if the manuscript is accepted for publication after review. The APC fee allows IIAV to make your research freely available to all readers using the Open Access model. In addition, Non-IIAV members who pay an extra voluntary publication fee (EVPF) of $500 USD will be granted expedited publication in the IJAV Journal and their papers can be displayed on the Internet after acceptance. If the $200 USD (APC) publication fee is not honored, papers will not be published. Authors who do not pay the voluntary fixed fee of $500 USD will have their papers published but there may be a considerable delay. The English text of the papers must be of high quality. If the text submitted is of low quality the manuscript will be more than likely rejected. For authors whose first language is not English, we recommend having their manuscripts reviewed and edited prior to submission by a native English speaker with scientific expertise. There are many commercial editing services which can provide this service at a cost to the authors.
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