基于PSD的地震波检测系统
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摘要
详细介绍了基于PSD传感器的地震波检测系统的研究。该系统以半导体激光器作为光源,利用PSD对光源照射到其表面位置的高分辨能力,对地面震动的运动情况进行检测分析。PSD两极输出的电流,经过电流—电压变换、放大,然后经过AD转换输送到计算机。通过MATLAB仿真分析,能够准确地检测到地震波振幅、频率等信息,幅值误差小于1%。
The study of the seismic wave detection system based on PSD sensor is introduced in great detail.The system taking a semiconductor laser as light source applies PSD sensor to detect the motion of the ground vibration.The current output of PSD bipolar is conveyed to a computer through the AD converter by a change of current to voltage and amplification.MATLAB simulation shows that the amplitude,frequency and other information of seismic wave can be accurately detected,and error is less than 1%.
The study of the seismic wave detection system based on PSD sensor is introduced in great detail.The system taking a semiconductor laser as light source applies PSD sensor to detect the motion of the ground vibration.The current output of PSD bipolar is conveyed to a computer through the AD converter by a change of current to voltage and amplification.MATLAB simulation shows that the amplitude,frequency and other information of seismic wave can be accurately detected,and error is less than 1%.
引文
[1]高经伍,隋金雪,赵凤华.PSD在弦振动测量中的应用[J].仪表技术与传感器,2004(9):30-31.
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[3]朱尚明.位置敏感检测器PSD及其应用研究[J].仪表技术与传感器,1996(2):39-40.
[4]滕云田.现代地震地磁观测技术研究[D].北京:中国地震局地球物理研究所,2001:9-10.
[5]沈梦培.电子放大地震仪[M].北京:地震出版社,1982.
[6]谢沅清.信号处理电路[M].北京:电子工业出版社,1994.
[2]裴先登,罗春,黄浩.PSD高精度位置测量系统的研究与设计[J].华中科技大学学报(自然科学版),2004(2):7-9.
[3]朱尚明.位置敏感检测器PSD及其应用研究[J].仪表技术与传感器,1996(2):39-40.
[4]滕云田.现代地震地磁观测技术研究[D].北京:中国地震局地球物理研究所,2001:9-10.
[5]沈梦培.电子放大地震仪[M].北京:地震出版社,1982.
[6]谢沅清.信号处理电路[M].北京:电子工业出版社,1994.
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