Ice-core solid body DC conductivity measuring control circuit

Abstract

The invention relates to an ice-core solid body DC conductivity measuring control circuit, and addresses the measuring inaccuracy of ice-core conductivity. The circuit includes a micro-controller module, a power supply module, a high voltage power supply module, an acquisition and conversion simulation module, a grating ruler circuit and motor control circuit. The micro-controller module is intended for analyzing and processing conductivity measuring data, controlling the rotation of a servo motor. The power supply circuit is intended for powering every active chip. The high voltage power supply module is intended for generating high voltage and acting on the surface of the ice-core through two conductivity measuring probes with adjustable ranges. The acquisition and conversion simulation module is intended for acquiring the current data of the high voltage after acting on the surface of the ice core. The grating ruler circuit is intended for acquiring a displacement signal value of the conductivity measuring probes that moves during measuring. The motor control circuit is intended for controlling the start, pause, rotation direction and rotation speed of a motor.

Description

technical field [0001] The invention relates to an ice core solid direct current conductivity measurement control circuit. Background technique [0002] Polar ice cores are good carriers of climate and environment information, with a series of advantages such as high information fidelity, long time series, high resolution, and less human disturbance. They are important objects and information sources for climate and environment research. The measurement of electrical properties of solid ice cores is almost non-destructive to ice cores, and has a series of advantages such as fast, simple operation, low cost and high resolution. It is widely used in the analysis and research of polar ice cores, and is usually the first batch of analytical data of polar ice cores. , is an important means of quickly locating major climate events and ice core cross-dating. Ice core solid DC conductivity measurement technology is used to measure the conductivity of the ice core section, and the s...

AI Technical Summary

Problems solved by technology

Since the adhesion, pressure, movement speed and positioning of the electrode and the ice surface will affect the measurement accuracy, the requirements for the measurement control circuit of the corresponding device are very high. At the same time, considering the existence environment of the ice core, the measurement control of the device Circuits often work in extremely harsh working environments, and the environmental adaptability requirements for measurement and control circuits are also very high. Therefore, there is currently no mature solution for the measurement and control of solid DC conductivity in ice cores.

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