Non-uniform Sampling Signal Spectral Estimation of Tire Pressure Monitoring System Using Wavelet Transform

Abnormal tire pressure can be detected in many ways. One method is to monitor the tire´s response vibration caused by the stochastic ground excitation. According to measure the vibratory frequency, the tire pressure can be estimated. In this paper, a resonance frequency of event based sampling signal in tire pressure monitoring system is properly estimated by utilizing non-uniform wavelet transform. The processing procedure is presented from the uniform wavelet to non-uniform wavelet. The results by simulation show that it´s effective.