用软件定义的无线收音机进行被动无线 SAW 传感器询问的频谱配套方法
Shihao Wang1, Qi Wang1, Guopeng Zhu1
1Information & Telecommunications Company, State Grid Shandong Electric Power Company, Jinan 250013, China.
Micromachines
|June 27, 2025
概括
本研究介绍了一种更快,非代的方法,用于测量使用软件定义无线电 (SDR) 的表面声波 (SAW) 传感器频率. 新方法减少了实时监控工业设备的计算复杂性.
科学领域:
- 电气工程 电气工程
- 传感器技术 传感器技术
- 信号处理 信号处理
背景情况:
- 被动无线表面声波 (SAW) 传感器对于工业设备安全监测至关重要.
- 软件定义无线电 (SDR) 为传统SAW审讯器提供了一种灵活,具有成本效益的替代方案.
- 现有的SAW传感器频率估计方法是计算密集的,阻碍了实时应用.
研究的目的:
- 开发和评估一种用于SAW频率测量的新型非代频谱配合方法.
- 将这种方法与用于增强SAW传感系统的SDR平台集成.
- 评估计算效率和测量准确性之间的权衡.
主要方法:
- 使用软件定义无线电 (SDR) 平台实现表面声波 (SAW) 传感系统.
- 开发和应用一个非代频谱拟合算法用于频率估计.
- 通过理论分析,模拟和实验测量来评估性能,使用不同的窗口函数和快速里埃变换 (FFT) 长度.
主要成果:
- 与传统的代算法相比,提出的非代方法显著降低了计算复杂性.
- 实验结果表明,时间效率和SAW频率测量准确性之间存在良好的平衡.
- 使用4096点的FFT长度实现了±3kHz的峰值到峰值精度.
结论:
- 开发的非代频谱配合方法是基于SDR的系统中SAW频率测量的可行和高效方法.
- 这种方法提高了SAW传感器用于工业监控的实时适用性.
- 为成本效益高,灵活的传感器查询提供了实用解决方案.
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