基于虚拟仪器技术的地下水探测系统研究

为了整合磁共振测深(MRS)地下水探测系统的测量与反演功能,结合LabVIEW软件在测量与信号处理方面的优势,利用虚拟仪器技术开发了地下水探测系统的上位机系统软件,实现了对探测系统整个操作流程的管理。根据已知探测地区的拉莫尔频率产生激发信号,送至发射/接收线圈,利用快速关断技术实现了发射与接收的快速切换。将采集的弛豫衰减信号送至反演解释算法模块,采用改进的量子遗传算法与截断奇异值分解(TSVD)的联合方法,反演解释了地下含水层的水文地质参数。野外试验表明,该探测系统的工作稳定性好,验证了反演结果的准确性。

Research on Groundwater Detection System Based on Visual Instrument Technology

To integrate magnetic resonance sounding measurement and inversion functions of groundwater detection system,considering the advantages of LabVIEW in measurement and signal processing,the host groundwater detection system software is developed based on virtual instrumental technology.The excitation signal about Larmor frequency is generated and sent to transmitting/receiving coil,along with using fast switching technology to achieve fast turn-off actions.The collected relaxation attenuation signal is sent to inversion interpretation module,after joint inversion of quantum genetic algorithm and truncated singular value decomposition method,aquifer hydro-geological parameters are interpreted.Field tests show that this detection system works stably,the accuracy of the inversion result is verified.