Abstract

Many researchers have been focused on energy harvester for the tire over the past decade. In this paper, we propose a self-tuning stochastic resonance energy harvester for a smart tire with the circuit integration. Compared to existing harvesters, the energy harvester shows large power and wide bandwidth due to stochastic resonance and passive selftuning. The harvester consists of an inward rotating cantilever beam with an electromagnetic transducer. The tuning performance is verified by analysis of Kramers rate and signal-to-noise ratio (SNR). In addition to energy harvester, we implemented the energy harvesting circuit to achieve data acquisition and energy storage. Circuit includes a rectifier, buck-boost converter, wireless communication module, microprocessor and temperature monitoring sensor. In lab test and field test are conducted to performance of self-tuning energy harvester. Circuit assembly is attached to the rim hub while harvester assembly is installed inside the tire with a tire pressure monitoring sensor (TPMS). The results the feasibility of the self-tuning harvesting strategy on the smart tire application.

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