Page 107 - 《应用声学》2024年第6期

第 43 卷 第 6 期 Vol. 43, No. 6
2024 年 11 月 Journal of Applied Acoustics November, 2024

⋄ 研究报告 ⋄

基于兰姆波的平板频分复用数据传输系统研究 ∗

徐 统 1 吴 斌 2 刘秀成 2 高 翔 2†

(1 北京工业大学材料与制造学部 北京 100124)
(2 北京工业大学信息学部 北京 100124)
摘要：以兰姆波为载体实现平板上数据通信具有传输距离远、使用成本低和可靠性高等优点，可以在保证结构
完整性的条件下实现非电磁波通信。该文建立平板中兰姆波频分复用发射信号通用模型，分析兰姆波频分复
用发射信号的构建规则。首先，对现有传感器进行扫频实验，确定兰姆波激励频带；其次根据平板材料参数、尺
寸参数和传感器位置信息分析板长对激励信号时长的影响，得到频分复用激励信号的子载波个数及其中心频
率；最后使用格兹尔算法快速提取信号频谱中的幅度信息，利用传感器扫频曲线对信号频谱进行补偿，减少子
载波频带在传输时的频率选择性衰减。将传感器布置在平板的不同位置上进行声数据传输实验，结果表明，通
过所构建的兰姆波频分复用激励信号通用模型，可以有效地进行声数据的传输，为使用兰姆波传输声数据提
供了可行的技术方案。
关键词：兰姆波；数据通信；频分复用；结构健康监测传感网络
中图法分类号: TB551; TG11528 文献标识码: A 文章编号: 1000-310X(2024)06-1283-14
DOI: 10.11684/j.issn.1000-310X.2024.06.011

The flat panel frequency division multiplexing data transmission system
based on Lamb waves

XU Tong 1 WU Bin 2 LIU Xiucheng 2 GAO Xiang 2

(1 Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China)
(2 Faculty of Information Technology, Beijing University of Technology, Beijing 100124, China)

Abstract: Realization of data communication on a flat plate by using Lamb waves as a carrier has the advan-
tages of long transmission distance, low cost of use and high reliability, and can realize non-electromagnetic
wave communication under the condition of ensuring structural integrity. This paper establishes a general
model of Lamb wave frequency division multiplexing (FDM) emission signal in a flat panel and analyzes the
construction rules of Lamb wave FDM emission signal. Firstly, the existing sensor sweep experiment is carried
out to determine the Lamb wave excitation band; secondly, the influence of the plate length on the excitation
signal duration is analyzed according to the flat plate material parameter, size parameter and sensor position
information, and the number of subcarriers and their center frequency of frequency division multiplexing
excitation signal are obtained; finally, the amplitude information in the signal spectrum is extracted by using
the Gerzel algorithm, and the signal spectrum is compensated using the sensor sweep curve to reduce the
frequency-selective attenuation of the subcarrier frequency band during transmission. The transducers are

2023-08-07 收稿; 2023-09-29 定稿
国家自然科学基金项目 (12272014, 12004018, 12122201)
∗
作者简介: 徐统 (1995– ), 男, 山东淄博人, 博士研究生, 研究方向: 无损检测。
† 通信作者 E-mail: gaoxiang@bjut.edu.cn