Electric Vehicle Warning Sound System
Keywords:
Dynamic Volume Control, Sound mixing, Pitch shifting, SPI flash, Graph-ical Programming Interface, Program memory, Revolutions Per Minute, European Union, Electric Vehicle, Waveform Audio File, Random switching frequency, Pulse Width ModulationAbstract
The Electric Vehicle Warning Sound System (EVWSS) is designed to generate minimal yet effective sound levels to aid pedestrians, visually impaired individuals, and cyclists in identifying the presence and direction of electric vehicles. This system produces a sequence of alert sounds tailored to ensure awareness in the vicinity of electric vehicles. The proposed solution dynamically adjusts the frequency and volume of pre-stored WAV files based on the vehicle's speed, transmitting the audio signals to an audio power amplifier. The application modulates the frequency of the WAV files in accordance with the vehicle's speed, akin to the engine stroke. WAV files are stored in flash memory and customized as per the end user's requirements. Based on the Potentiometer input, the system selects WAV file from flash memory, modifies its frequency and pitch, and sends the processed signal to the audio power amplifier.
DOI: https://doi.org/10.24321/2395.3802.202612
References
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