小型化多道地震信号采集系统设计与实现
|
摘要
针对工程地震信号采集设备的便携性问题,采用MSP430F149驱动单片24位ADS1256以分时切换方式控制四路差分信号采集,实现系统的低功耗、小型化设计。重点介绍有限存储空间内大数据量的暂存、A/D通道切换与数据存储时间差的平衡问题,包括A/D分辨率和精度的提高方法。系统最终实现最大1kS/s等效采样率时四通道2048点的并行采集存储,分辨率在19位以上,从其在自主开发的无线遥测式地震仪应用效果来看,其信号频谱均满足有效地震波勘探需求。
For solving the portability problem of engineering seismic signal acquisition equipment,the authors adopt MSP430F149 to driver single 24-bit ADS1256 to control four-channel differential signal acquisition by time-sharing switching,and to accomplish the low-power and miniature design on the system of multi-channel engineering seismic signal acquisition.It focused on problems that the large amount of data is stored temporarily in limited storage space and the balance of time difference between A/D channel switching and a large amount of data storage,including the means to improve A/D resolution and accuracy.The system ultimately achieves the four-channel 2048 points parallel acquisition and storage with maximum 1ks/s sampling rate and higher than 19bits resolution.According to the effects obtained from the experiment applying it to wireless telemetry seismograph which is self-developed,the signal spectrum meets the demand for effective seismic wave exploration.
For solving the portability problem of engineering seismic signal acquisition equipment,the authors adopt MSP430F149 to driver single 24-bit ADS1256 to control four-channel differential signal acquisition by time-sharing switching,and to accomplish the low-power and miniature design on the system of multi-channel engineering seismic signal acquisition.It focused on problems that the large amount of data is stored temporarily in limited storage space and the balance of time difference between A/D channel switching and a large amount of data storage,including the means to improve A/D resolution and accuracy.The system ultimately achieves the four-channel 2048 points parallel acquisition and storage with maximum 1ks/s sampling rate and higher than 19bits resolution.According to the effects obtained from the experiment applying it to wireless telemetry seismograph which is self-developed,the signal spectrum meets the demand for effective seismic wave exploration.
引文
[1]戴朝强,汪瑞良,刘军,等.中浅层高分辨率二维地震技术在惠州地区的应用[J].石油天然气学报,2011,33(11):63-68.
[2]王运生,王瑞琪,张启洲,等.无线浅层地震仪实现方法及其在隧道工程中的应用[J].现代隧道技术,2011,48(5):163-166.
[3]盛俭,薄景山,佴磊,等.浅层人工地震在长春市断层探测中的应用[J].自然灾害学报,2007,16(5):116-120.
[4]林学龙.高分辨率低功耗浅层地震勘探仪器的研究与实现[D].上海:上海大学机电工程与自动化学院,2008.
[5]张波,周云耀,吴涛.一种新的地震数据采集系统的设计[J].大地测量与地球动力学,2011,27(s1):122-124.
[6]陈祖斌,滕吉文,林君,等.BSR_2宽频带地震记录仪的研制[J].地球物理学报,2006,49(5):1475-1481.
[7]芦守平,姜瀚文,徐千.基于单片机控制的程控开关电源研究[J].电子技术应用,2011,37(5):78-81.
[8]Liu K,Zhao Z W,Jiang H L.A wireless microbialfuel cell voltage data acquisition system based onMSP430F149[J].Applied Mechanics and Materials,2012:105-107,1961-1965.
[9]Jia W,Xie P,Feng G Q.Wireless temperature mea-surement and control system based on MSP430F149[C]∥Proceedings-4th International Conference on Genetic andEvolutionary Computing,ICGEC,2010:822-825.
[2]王运生,王瑞琪,张启洲,等.无线浅层地震仪实现方法及其在隧道工程中的应用[J].现代隧道技术,2011,48(5):163-166.
[3]盛俭,薄景山,佴磊,等.浅层人工地震在长春市断层探测中的应用[J].自然灾害学报,2007,16(5):116-120.
[4]林学龙.高分辨率低功耗浅层地震勘探仪器的研究与实现[D].上海:上海大学机电工程与自动化学院,2008.
[5]张波,周云耀,吴涛.一种新的地震数据采集系统的设计[J].大地测量与地球动力学,2011,27(s1):122-124.
[6]陈祖斌,滕吉文,林君,等.BSR_2宽频带地震记录仪的研制[J].地球物理学报,2006,49(5):1475-1481.
[7]芦守平,姜瀚文,徐千.基于单片机控制的程控开关电源研究[J].电子技术应用,2011,37(5):78-81.
[8]Liu K,Zhao Z W,Jiang H L.A wireless microbialfuel cell voltage data acquisition system based onMSP430F149[J].Applied Mechanics and Materials,2012:105-107,1961-1965.
[9]Jia W,Xie P,Feng G Q.Wireless temperature mea-surement and control system based on MSP430F149[C]∥Proceedings-4th International Conference on Genetic andEvolutionary Computing,ICGEC,2010:822-825.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心