| 基于VCSEL的自混合振动传感的研究 |
| |
| 引用本文： | 邓海峡,王宝光,邵磊.基于VCSEL的自混合振动传感的研究[J].新技术新工艺,2010(4):4-6. |
| |
| 作者姓名： | 邓海峡 王宝光 邵磊 |
| |
| 作者单位： | 天津大学,精密测试技术与仪器国家重点实验室,天津,300072 |
| |
| 摘 要： | 提出了一种基于VCSEL(Vertical cavity surface emitting laser)的自混合效应的激光测振方法。单模VCSEL测振系统具有精度高、功耗低和结构简单等优点,在信号处理方面,利用短时傅立叶变换对多普勒信号进行频谱分析,提高了系统噪声适应能力和信号处理速度;利用比值校正和小波变换相结合的方法提高系统测振精度。试验证明,位移误差低于1%,实现了振动位移和速度的精确测量。
|
| 关 键 词： | VCSEL 自混合干涉 振动测量 傅立叶变换 小波变换 |
Research on Sensing Technology of Self-mixing Vibration based on VCSEL |
| |
| DENG Haixia,WANG Baoguang,SHAO Lei.Research on Sensing Technology of Self-mixing Vibration based on VCSEL[J].New Technology & New Process,2010(4):4-6. |
| |
| Authors: | DENG Haixia WANG Baoguang SHAO Lei |
| |
| Affiliation: | DENG Haixia,WANG Baoguang,SHAO Lei (State Key Laboratory of Precision Measuring Technology , Instruments,Tianjin University,Tianjin 300072,China) |
| |
| Abstract: | The self-mixing laser vibrometer way based on vertical cavity surface emitting laser (VCSEL) is provided.It has many advantages,such as high precision,low power consumption and simple structure.The system architecture is simplified and Signal-to-Noise is improved by using VCSEL in place of an ordinary semiconductor laser.In signal processing,the short-time Fourier transformation is employed to analyze the Doppler signal to improve the signal processing speed.The ratio regulating method and wavelet transform... |
| |
| Keywords: | VCSEL |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
