The Smart Gear System comprises two integral components: the Smart Gear, featuring a sensor and an antenna circuit intricately embedded onto the gear, and a monitoring antenna seamlessly linked to a network analyzer. The proximity of the smart gear antenna to the monitoring antenna induces magnetic coupling between the two antennae, consequently altering the frequency characteristics of the monitoring antenna. Additionally, minute deformations in the gear tooth root result in modifications to the sensor's shape on the gear, thereby causing alterations in the frequency characteristics of the sensor. The overall health status of the gear can be discerned on the monitoring antenna side by monitoring the frequency characteristic variations of the sensor, based on the fundamental principle of magnetic coupling during operational processes. In the context of this investigation, a dynamic evaluation of the Smart Gear System is executed, with the return loss of the monitoring antenna meticulously gauged at periodic intervals throughout the operational phase. This study delves into the correlation between the return loss exhibited by the monitoring antenna and the dynamic physical alterations in the Smart Gear during operation.
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