Pseudo-random code electrical instrument

Abstract

The invention discloses a pseudo-random code electrical instrument. The pseudo-random code electrical instrument includes a transmitter and a receiver. The transmitter comprises a FPGA processing module, a constant current source module and an ADC data acquisition module. The FPGA processing module comprises a master control CPU and an FPGA connected with the master control CPU and used for time sequence control. The constant current source module comprises a driving circuit, a constant current power source and a standard resistor, wherein the driving circuit, the constant current power source and the standard resistor are connected in sequence. The ADC data acquisition module comprises an operational amplifier, a differential amplifier, an ADC, a two-port RAM and a DSP and further comprises a CPLD used for algorithm integration, wherein the operational amplifier, the differential amplifier, the ADC, the two-port RAM and the DSP are connected in sequence, and the CPLD is respectively connected with the ADC, the two-port RAM and the DSP. The FPGA is connected with the CPLD through a synchronous interface, and the DSP is connected with the RAM and connected to a PC upper computer through a USB controller. The receiver comprises an SMA connector, an operational amplifier, a differential amplifier, an ADC, an FPGA and a DSP and further comprises a master control CPU respectively connected with the FPGA and the DSP, wherein the SMA connector, the operational amplifier, the differential amplifier, the ADC, the FPGA and the DSP are connected in sequence, and the DSP is connected to the PC upper computer through a USB MCU module. The pseudo-random code electrical instrument is high in anti-interference performance and exploration efficiency and can adapt to complicated environments.

Description

technical field [0001] The invention relates to geological exploration equipment, in particular to a pseudo-random code electrical measuring instrument. Background technique [0002] Electromagnetic prospecting method is one of the most widely used and effective methods in mineral prospecting and engineering and environmental prospecting. However, for a long time, this type of method has been plagued by the following aspects: First, its anti-interference ability is low, especially when working in industrial and mining areas or cities, it is susceptible to various electrical interferences. Secondly, the commonly used frequency-domain electromagnetic sounding needs to be observed frequency by frequency within a certain frequency range, and the production efficiency is low. Third, some electromagnetic prospecting methods need to arrange wires up to several kilometers long in the field observation, which not only makes the observation device cumbersome and further reduces produ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the existing electromagnetic exploration equipment has low anti-interference ability, low exploration efficiency, and difficulty in adapting to complex environments

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