| 硅谐振微传感器中微弱信号频率的外差式随机共振检测 |
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| 引用本文： | 黄咏梅,林敏.硅谐振微传感器中微弱信号频率的外差式随机共振检测[J].传感技术学报,2006,19(5):1542-1544. |
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| 作者姓名： | 黄咏梅 林敏 |
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| 作者单位： | 中国计量学院计量技术工程学院,杭州,310018;中国计量学院计量技术工程学院,杭州,310018 |
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| 摘 要： | 硅谐振微传感器输出信号的信噪比很低,频率信号往往淹没在噪声之中.论文分析了随机共振系统的功率谱放大率和信噪比特性,提出了外差式随机共振频率检测方法,并将该方法应用于硅谐振微传感器输出信号的频率检测.理论分析和数值仿真结果表明,外差式随机共振能将更多的噪声能量转变为频率信号的能量,通过调节载波信号频率可从共振谱峰的变化中准确测定谐振频率.该方法是可行、有效的.
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| 关 键 词： | MEMS 硅谐振微传感器 微弱信号 外差式 随机共振 |
| 文章编号： | 1004-1699(2006)05-1542-03 |
| 修稿时间： | 2006年7月1日 |
The weak signal frequency in silicon resonance microsensor measurement based on heterodyne stochastic resonance method |
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| Huang Yong-mei,Lin Min.The weak signal frequency in silicon resonance microsensor measurement based on heterodyne stochastic resonance method[J].Journal of Transduction Technology,2006,19(5):1542-1544. |
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| Authors: | Huang Yong-mei Lin Min |
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| Affiliation: | College of Metrology Technology and Engineering, China Jiliang University,
HangZhou, 310018 |
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| Abstract: | The SNR of silicon resonance microsensor output signal is low. The frequency of signal is always submerged in noise. The SPA and SNR of stochastic resonators system are analyzed. A signal frequency measurement method based on heterodyne stochastic resonance is proposed to detect silicon resonance microsensor output signal frequency. The results of theoretical analysis and numerical simulation manifest that the energy of noise can be transferred to signal frequency through the heterodyne stochastic resonance method. The resonance frequency can be determined accurately from the resonance spectrum peak through adjusting carrier wave signal frequency. The method is effective and can be realized. |
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| Keywords: | MEMS |
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