Parallel High-density Electrical Method Launch System Design

High-density resistivity method is an array exploration method developed on the basis of the conventional electric method.By arranging hundreds of electrodes at a time,electrical data measurement of one area can be realized.The method is mainly used for the study of a series of engineering geological problems such as deep trap detection,groundwater resource detection and dam leakage detection in old mining areas.High-density electrical method is an advanced physical exploration method,but due to the limited structure of instruments on the market,it often does not have too high work efficiency.In addition,these instruments have the disadvantages of single transmission signal,large power consumption,poor anti-interference ability,low sampling accuracy and bulky size,which leads to the limitation of the working range of such instruments.In order to solve the shortcomings of traditional instruments,this paper draws on the data measurement method of distributed seismic observation system to realize the parallel measurement mode.Through the optimization design of the main control circuit and the transmission circuit,the design of the parallel high-density electrical emission system is finally realized.This paper studies the related technologies of the launch system.It mainly includes system design,hardware circuit design,software program design and key technology research.The hardware design mainly includes the design of each main control unit and each module unit circuit,as well as the PCB circuit board design.The software design mainly includes the design of ARM control program and the design of FPGA logic control timing.The ARM control program is implemented by C language,and the FPGA timing logic is implemented by Verilog HDL hardware description language.In the design process,the relevant hardware was debugged,and the software program was simulated in timing and function.In addition,this paper studies IGBT peak voltage absorption,signal synchronization trigger and system reliability design,and designs related circuits and functional modules.The circuit and module have been tested and simulated,and the design requirements can be realized.And some academic papers were written for the design of the module.Finally,the system was tested and the test results were analyzed and introduced.At the end of the paper,the design is summarized and forecasted,and the next step is introduced.