Abstract
This article describes the measuring system and the influence of selected factors on the accuracy of thermographic temperature measurement using a macrolens. This method enables thermographic measurement of the temperature of a small object with an area of square millimeters as, e.g., electronic elements. Damage to electronic components is often preceded by a rise in temperature, and an effective way to diagnose such components is the use of a thermographic camera. The ability to diagnose a device under full load makes thermography a very practical method that allows us to assess the condition of the device during operation. The accuracy of such a measurement depends on the conditions in which it is carried out. The incorrect selection of at least one parameter compensating the influence of the factor occurring during the measurement may cause the indicated value to differ from the correct value. This paper presents the basic issues linked to thermographic measurements and highlights the sources of errors. A measuring stand which enables the assessment of the influence of selected factors on the accuracy of thermographic measurement of electronic elements with the use of a macrolens is presented.
Highlights
An innovative stand for microscopic thermography has been presented in this article
The reason for the creation of such a stand was to verify the impact of the factors influencing the indication of the IR camera on the error of temperature measurement with microscopic thermography
Factors commonly mentioned in the literature as influencing the thermographic measurements are presented, and special attention is paid to those that are important in microscopic thermography
Summary
Diagnosis of irregularities in the operation of individual electronic components allows users to avoid damaging the entire device and minimizes repair costs. Since damage to these elements is often preceded by a rise in temperature [2], an effective method is the monitoring of the temperature distribution on the surface of the components of the observed device. Various studies have considered a thermographic camera as a good tool to measure component temperatures [3,4]. Thermographic cameras record the infrared radiation emitted by the observed object.
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