Securing Temperature Measurements: An Assessment of Sensors' Vulnerability to IEMI

Temperature measurements are vital to the reliable and accurate functioning of critical systems and embedded systems. However, these measurements can be compromised by Intentional Electromagnetic Interference (IEMI). This study investigates the vulnerability of five different types of temperature sensors to IEMI, using continuous-wave (CW) and pulsed signals. The results demonstrate that the sensors' vulnerability to CW signals is dependent on frequency and field strength, with certain frequencies causing significant errors. The vulnerability of the sensors appears to be influenced by the sensing technology and the geometry. The study also identifies a correlation between the electromagnetic field generated and the indicated temperature of the sensors. Furthermore, the study evaluates the vulnerability of the sensors to pulsed signals, identifying parameters that cause more errors than others and some patterns are identified. These findings highlight the importance of considering the potential impact of IEMI signals on temperature measurements in critical systems.