PIPELINE INSPECTION GAUGE MAGNETIC SENSOR CALIBRATION USING TIME-HARMONIC ELECTROMAGNETIC FIELD
- Authors: Vavilov R.E.1,2, Goldberg V.A.2
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Affiliations:
- Saint Petersburg Electrotechnical University "LETI"
- JSC "Gazprom diagnostika"
- Issue: No 2 (2025)
- Pages: 32-42
- Section: INFORMATION-MEASURING AND CONTROL SYSTEMS
- URL: https://journals.rcsi.science/2307-5538/article/view/296475
- ID: 296475
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Abstract
Background. The relevance of the topic is due to the necessity to develop a calibration procedure for pipeline inspection gauge magnetic sensor taking into account the possibility of automating the calibration process with softwareand hardware, since there is no suitable integrated solution due to the specifics of the sensors application. The aim of the work is to develop the magnetic sensor calibration procedure, as well as to provide the mathematical support for individual calibrator components numerical modeling. Materials and methods. The measurement procedures are described using the mathematical apparatus of metrological analysis and synthesis. To simulate a calibration field of a measure of magnetic quantity using the finite element method, we consider a method for creating a mathematical model describing the electromagnetic properties of a coil with direct current and low-frequency alternating current. The criteria for evaluating the results of the calibration magnetic field simulation are given. Results. A method for magnetic sensors calibration based on the use of a time-harmonic electromagnetic field generated by a measure of magnetic quantity is proposed. An approach to determine the required overall dimensions of a measure of magnetic quantity based on the finite element simulation of the measure magnetic field is proposed. Conclusions. The proposed calibration method is convenient due to its focus on automation. As a result of calibration measurements, a set of values is measured for each magnetic measuring transducer in the entire transducer measuring interval. The choice of a harmonic function for the calibration magnetic field generation is also due to the convenience of the hardware implementation of the procedure for generating the input signal of a measure of magnetic quantity. The measure coil model proposed in this paper is adequate to determine the required dimensions and the desired range of the output value variation of the measure at direct current. In the case of alternating and pulsed current, the model is inadequate, since the influence of inductance and winding resistance is not taken into account. However, the low frequency of the calibration field (no more than tens to hundreds of Hz) makes it possible to neglect additional analysis of transients in the circuit.
About the authors
Roman E. Vavilov
Saint Petersburg Electrotechnical University "LETI"; JSC "Gazprom diagnostika"
Author for correspondence.
Email: revavilov@gmail.com
Postgraduate student; leading engineer of the department of development of circuit engineering solutions for in-pipe flaw detection equipment
(5 prof. Popov street, Saint Petersburg, Russia); (build. 4, 40 Pulkovskoye Shosse, Saint Petersburg, Russia)Valeriia A. Goldberg
JSC "Gazprom diagnostika"
Email: v.goldberg@diagnostika.gazprom.ru
Leading engineer of the department of development of mechanical structures and monitoring systems for in-pipe flaw detection equipment
(build. 4, 40 Pulkovskoye Shosse, Saint Petersburg, Russia)References
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