Use of numerical methods for the design of thermal protection of an RFID-based contactless identification system of ladles

Abstract

A method of contactless identification is proposed for steel ladles to eliminate manual inputs that negatively affect the monitoring system of ladles. It is an RFID (Radio Frequency Identification) method based on the principle of radio data transmission between the sensor and a moving object (in our case, a ladle), which is equipped with a so-called transponder (RFID tag). The RFID tag was part of the ladle; it was placed on its shell, reaching a temperature often exceeding 250 degrees C. The temperature limit for using an RFID transponder is 120 degrees C. For this reason, thermal insulation protection was made for the RFID transponder. Its design was preceded by simulations of temperature fields using numerical methods. The aim was to compare the resulting values obtained from numerical simulations with the actually measured temperatures and, on this basis, to subsequently perform a numerical simulation for conditions that are not operationally measurable.