Title: High precision measuring method for deep resource based on natural electric field idealization and detecting instrument
Application Number: 200610122834 Application Date: 2006.10.19
Publication Number: 1945358 Publication Date: 2007.04.11
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G01V3/00;G01V3/08;G01C7/00;G01C7/02
Applicant(s) Name: Zhang Donglai Address:
Inventor(s) Name: Zhang Donglai;Chang Chun;Chen Lianwu;Wang Chao;Qin
Attorney & Agent: zhouke you
Abstract:
    The invention is about a method for idealistically measuring the deep source with a high precision based on the natural electric field and its device. It processes the digital signal by using DSP and FPGA based on the existing measuring principle of the natural electric field, and it adopts GPS device for synchronized measurements and digital integration and effective use of natural and artificial electric interference to achieve the idealized natural electric field measurement. There are four channels on the detector which can be connected to four pairs of electrodes, so the speed of measurement is increased. The hardware of the system consists of a simulation unit, an A/D conversion unit and a digital unit,in which, the simulation unit is mainly used to amply the input signal and filter the frequency interference, and the A/D conversion unit is used to convert the analog signals into digital signals by using the converter of 24-bit delta-Sigma A/Dconverter, and digital unit is used to process the converted signals including the digital signal filtering, power spectrum calculation and memory function.
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