Alternating magnetometer verification system and verification method thereof

Abstract

The invention discloses an alternating magnetometer verification system and a verification method thereof. The verification system comprises an alternating current standard source and a Helmholtz coil. The alternating current standard source is electrically connected with the Helmholtz coil; the verification method comprises the following steps that S1, the computer controls the microprocessor and the FPGA chip to generate alternating voltage; S2, the alternating voltage passes through an isolation transformer to output exciting current, and the exciting current flows into a Helmholtz coil; S3, the Helmholtz coil generates a standard magnetic field, wherein the detected alternating magnetometer transmits reading data to the computer; S4, the exciting current flowing out of the Helmholtz coil is converted into 1V voltage; S5, the 1V voltage is converted and then fed back to the computer; S6, calculating is performed by a computer to obtain a magnetic induction intensity value of the standard magnetic field; and S7, compared the calculated magnetic induction intensity value with the reading data of the detected alternating magnetometer by the computer, and judging and detecting are performed through an error value.

Description

technical field [0001] The invention relates to the field of alternating magnetometers, in particular to an alternating magnetometer verification system and a verification method thereof. Background technique [0002] With the development of science and technology, the application of magnetic field is more and more extensive, from high-speed rail track detection, GPS navigation system, metal material flaw detection, safety detection, electromagnetic compatibility test, position measurement and other fields. Magnetic field measurement can be divided into constant magnetic field and alternating magnetic field. The measuring instruments for magnetic field are DC magnetometer and alternating magnetometer. [0003] In the field of electric energy measurement, the alternating magnetometer is widely used. When assessing the verification device of the electric energy meter, it is necessary to use an alternating magnetometer to measure the magnetic field at the position of the teste...

AI Technical Summary

Problems solved by technology

The traditional method for verifying the accuracy of the alternating magnetometer has a large number of equipment, complex installation and connection, and complicated operation. At the same time, manual reading is used, which requires more calculation work and is prone to calculation errors, which seriously reduces the verification efficiency of the alternating magnetometer. As well as the verification accuracy, it brings some inconvenience to the verification work of the alternating magnetometer.

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