Device for monitoring underground water seepage with charge method

Abstract

The invention relates to a device for monitoring underground water seepage with an excitation-at-the-mass method, comprising an electrode conversion unit, a voltage-current measuring unit, a microprocessor control unit, a wireless transmission unit and a power supply unit. The electrode conversion unit comprises a measuring electrode, a power supply electrode interface and a corresponding switching circuit; outputs of the measuring electrode and the power supply electrode interface are connected into corresponding voltage-current measuring channels respectively, and each measuring channel consists of a preamplifier circuit, a low-pass filter circuit, a trap circuit, a main amplifier circuit and an electric potential converting circuit; an output end of an electric potential converting unit of each measuring channel is connected to an AD converter of a microprocessor; one output control end of the microprocessor controls a measuring electrode converting circuit to realize the selectionand use of a ground measuring electrode, and another output control end of the microprocessor controls a power supply electrode switching circuit to realize the selection of power supply electrodes; and a universal synchronous-asynchronous receiver transmitter of the microprocessor drives a wireless transmitting module to transmit measuring data to a control center. The device can carry out real-time remote monitoring of underground water seepage based on the excitation-at-the-mass method.

Description

technical field [0001] The invention relates to an electronic monitoring device, in particular to a device for monitoring groundwater leakage using the principle of charging method. Background technique [0002] Leakage has always been an important issue in the safety of dams and other water-retaining structures and in the excavation of foundation pits. Leakage monitoring is an important content to ensure the safety of these buildings. Since the 1980s, a lot of manpower and material resources have been invested at home and abroad to carry out research on monitoring (detection) technology for leak location. From the results obtained, the basic method is to detect whether there are obvious differences in physical properties (ie, electrical properties, elasticity, temperature, etc.) between the hidden danger and the surrounding road, concrete and other media, or the various responses caused by it, customer service background interference , to detect hidden material abnormaliti...

AI Technical Summary

Problems solved by technology

At present, the commonly used leakage monitoring technologies based on electrical detection methods include high-density resistivity method, natural potential method and induced polarization method, and few use charging method to monitor leakage.

At the same time, the currently used leakage monitoring technology based on electrical detection is still based on manual timing and fixed-point measurement, which cannot realize functions such as long-term unattended, automatic monitoring, and remote data transmission.

Images