Development Of Data Acquisition System For Time Domain Induced Polarization And Pseudo-random Electrical Prospecting

The time domain induced polarization(TDIP)method is a widely used geological exploration method.Its principle and data processing method have a relatively mature theoretical system,but most domestic and foreign induced polarization instruments are controlled by panel operation and the data storage capacity is small.The pseudo-random electrical method has better anti-interference ability,but its methods and instruments are still in the research stage or primary stress.At the stage of application,there is no relatively complete theoretical system and mature application products.In this context,based on the existing multi-functional electric exploration system,this thesis develops the data acquisition system of TDIP and pseudo-random electric method,which realizes the wireless control of the instrument and the pre-processing function of the TDIP and pseudo-random data.The main research content of the paper includes the following three aspects.Firstly,the data preprocessing methods of TDIP and pseudo-random electrical method are studied,including understanding the principle of the methods and the calculation method of the parameters.Secondly,the instrument control software is developed to realize the functions of instrument control,parameter configuration,status query and display,file operation and real-time data monitoring,and to meet the needs of flexible operation on site.Thirdly,the data preprocessing software is developed to realize the graphical display of transmitter and receiver data files and the calculation of geophysical parameters.The paper verifies the overall performance of the TDIP and pseudo-random electrical data acquisition system through laboratory tests and flume experiments.The tests indicate that the data acquisition system realizes the accurate control of the instrument and the calculation of the geophysical parameters,and the software is neat and beautiful with simple operation.