LIDAR COLLISION AVOIDANCE SYSTEM WITH AUDIO FEEDBACK FOR VISUALLY IMPARIED INDIVIDUALS

Abstract

In this paper, we present the 4th-generation, light-weight low-power collision avoidance system. For this new version, the ultrasound transmitter of the data-acquisition component is replaced by a Lidar to avoid multi-paths in complex environments. The estimate of the target range is quantized into a frequency bin and represented by acoustic waveforms within the human hearing range. The bearing angle of the target is utilized to produce the temporal offset between the twin channels of the corresponding acoustic waveforms. This wearable and hearable device is designed for real-time navigation for the blind.