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Capacitive Pcb Security For Active Tamper And Alteration Detection, Casey Petersen
Capacitive Pcb Security For Active Tamper And Alteration Detection, Casey Petersen
Electrical and Computer Engineering ETDs
The purpose of the research presented is to establish the viability of using capacitive based sensors for the purpose of hardware security at the Printed Circuit Board (PCB) level. Capacitive sensors are traditionally used to sense changes to the areas surrounding the sensing pads in applications such as sensing proximity, position, humidity, fluid levels and much more.
The specific sensor used for this research is an inductor-capacitor (LC) based Capacitance-to-Digital Converter. This configuration is virtually immune to EM noise because it is a tank circuit and therefore filters out the noise which, in the past, caused reliability issues with these …