Static magnetic characteristic measuring apparatus

Abstract

The invention discloses a static magnetic characteristic measuring apparatus, comprising a detection module, a control module and an operation module, wherein the detection module comprises an N-shaped magnet, an excitation coil wound on the magnet and a Hall element placed at one end of the magnet; the control module comprises a programmable logic controller (PLC), an A / D converter, an excitation power supply, a relay and a switching power supply; the PLC is electrically connected with the A / D converter; the coil of the relay is electrically connected with the PLC; the ports of the relay arerespectively electrically connected with the excitation coil and the excitation power supply; the output end of the Hall element is electrically connected with the input end of the A / D converter; thepower supply end of the Hall element is electrically connected with the switching power supply; and the operation module comprises an industrial computer electrically connected with the control module. The measuring apparatus dispenses with demagnetization during measuring, thus realizing continuous measurement of the magnetic characteristic parameters and improving the efficiency of measurement.

Description

technical field [0001] The invention relates to a magnetic characteristic measuring device, in particular to a static magnetic characteristic measuring instrument for measuring the static magnetic characteristic of magnetic materials. Background technique [0002] Ferromagnetic material is a kind of material with specific performance and wide application. The magnetic characteristic parameters used to describe the characteristics of various ferromagnetic substances are divided into static and dynamic categories. Among them, the static magnetic properties refer to the magnetic properties of magnetic materials measured by magnetization with a DC magnetic field; it includes basic magnetization curves, hysteresis loops, remanence, coercivity, etc. Among them, hysteresis means that when the magnetic state of a ferromagnetic material changes, the magnetization lags behind the magnetic field strength, and its magnetic induction B and magnetic field strength H present a hysteresis ...

AI Technical Summary

Problems solved by technology

As an improvement to the ordinary impact method, this method is more convenient to operate, but there are still defects that the test sample is required to be made into a ring sample, and it is strictly demagnetized to a neutral state before the test. The scope of application is limited and it is not conducive to popularization.

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