Wheel Speed Signal Time-Frequency Transform and Tire Pressure Monitoring System Design
Journal Title: International Journal of Modern Engineering Research (IJMER) - Year 2014, Vol 4, Issue 1
Abstract
This article designed a tire pressure monitoring system with time-frequency conversion function, the system can convert wheel speed time signal into frequency signal, can filter in the frequency domain to obtain pure wheel speed signal, and use it to determine tire pressure. This article described the wheel speed signal sampling frequency calculation methods, filter mode selection methods, Fast Fourier Transform (FFT) and Inverse Fast Fourier Transform (IFFT) algorithm and its implementation within the microcontroller, and the implementation of frequency domain filtering within the microcontroller. We designed the tire pressure monitoring system based on XC2336A microcontroller; vehicle road test showed that after the time-frequency conversion, the tire pressure monitoring system can effectively improve the monitoring accuracy at a high speed.
Authors and Affiliations
Wang Liqiang
Keywords
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- EP ID EP93871
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