Underground digital direct current electrical method meter

Abstract

The invention relates to an underground digital direct current electrical method meter. At present, a special direct current electrical method instrument for exploring the geological structure underground in a coal mine is usually communicated with a computer by adopting an RS232 mode, which is not compatible with the communication of a new computer system; a 51-series singlechip is used as a core chip, which has the defects of large power consumption, small storage capacity, low processing speed, and the like; a display screen is generally too small and is difficult for observation, and an external light is needed for illumination; key operations are inconvenient; and the shell of the instrument is heavy. The underground digital direct current electrical method meter provided by the invention comprises a power supply electrode A, a power supply electrode B, a power supply electrode M, a power supply electrode N, a battery set, an isolation booster circuit, a current limiting circuit, a current sampling circuit, a V / F (Voltage / Frequency) conversion circuit, an STM32 microcontroller, an A / D conversion circuit and a preamplification and impedance conversion circuit. The underground digital direct current electrical method meter is communicated with a computer system by adopting a USB and has the advantages of low power consumption, high processing speed, convenience for key operation and light shell, and a large-screen LED backlight liquid crystal display screen is used as an interface.

Description

technical field [0001] The present invention relates to an underground digital direct current method instrument for detecting the advanced detection and lateral detection of underground mine geological structure, top and bottom pole fracture and broken zone, layered thickness determination of target layer, thickness of water-resisting layer, water-conducting channel and evaluation of aquifer Water-rich devices are also used for the detection of other engineering geological structures and hydrogeological conditions. Background technique [0002] Those skilled in the art know that at present, the direct current meter, a special instrument used for underground exploration of geological structures in coal mines, often uses RS232 communication between the instrument and the computer, which is incompatible with the communication of the new computer system; the core chip adopts 51 series single-chip microcomputer, It has the disadvantages of large power consumption, small storage c...

AI Technical Summary

Problems solved by technology

[0002] Those skilled in the art know that at present, the direct current meter, a special instrument used for underground exploration of geological structures in coal mines, often uses RS232 communication between the instrument and the computer, which is incompatible with the communication of the new computer system; the core chip adopts 51 series single-chip microcomputer, It has the disadvantages of large power consumption, small storage capacity, and slow processing speed; the display screen is generally too small, difficult to observe, and requires external lighting; the key operation is inconvenient; the instrument shell is bulky

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