Multi-channel galvanic corrosion measurement device

Abstract

The invention belongs to the technical field of galvanic corrosion measurement for metal materials, in particular relates to a multi-channel galvanic corrosion measurement device. According to the multi-channel galvanic corrosion measurement device, an SOC (System on a Chip) processor structural design is adopted; the front end of an electrode connection cable is connected with an electrode; the rear end of the electrode connection cable is connected into a voltage / current measurement switching unit; two ends of a front end signal conditioning circuit are bridged with a reference source afterbeing electrically communicated with an A / D (Analog-to-Digital) conversion circuit; the front end of the front end signal conditioning circuit is electrically connected with the voltage / current measurement switching unit; the output end of the A / D conversion circuit is electrically communicated with a main control module after being connected in series with a multi-channel electric isolation unit; an SOC processor is arranged in the main control module; the main control module is electrically connected with a display module, a storage module and a communication module respectively, so that electric information control is realized; and a signal input by a reference electrode is incorporated into the front end signal conditioning circuit after being amplified, so that a signal processing system is formed. The multi-channel galvanic corrosion measurement device has the characteristics of simple overall structure, reliable principle, convenience for use and operation, accuracy in measurement data, flexibility for control and wide application range.

Description

Technical field: [0001] The invention belongs to the technical field of galvanic corrosion measurement of metal materials, and relates to a multi-channel measurement device for galvanic corrosion potential and current, in particular to a multi-channel galvanic corrosion measurement device. Background technique: [0002] When dissimilar metal materials are in contact with each other in the same medium, due to the unequal corrosion potential, there is a galvanic current between the two, which makes the corrosion of the metal with a negative potential accelerate, while the corrosion rate of the metal with a positive potential decreases. In engineering anticorrosion design, the control of galvanic corrosion between dissimilar materials is very important. If the design is not proper, the corrosion of some parts will be accelerated, resulting in huge losses. Therefore, the galvanic sequence and galvanic corrosion behavior of various materials in specific environments are important...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art, to seek to design and develop an intelligent multi-channel galvanic corrosion measurement device based on the SOC processor, which can independently perform the programmable control and galvanic corrosion test process of the metal material galvanic corrosion test. The collection and storage of corrosion data and the display and query of measurement status are used for the measurement of galvanic corrosion potential and galvanic corrosion current between dissimilar metal materials in different indoor and outdoor environments, and solve the problems of existing galvanic corrosion measurement equipment in terms of control methods and signals. Technical issues with conditioning, noise interference, etc.

Images