COHERENT LIGHT-BASED OBSTACLE AVOIDANCE DEVICE AND METHOD

摘要

A coherent light-based obstacle avoidance device and method. The method comprises: obtaining, by means of ultrasound, the distance d between a detected object (10) and an obstacle avoidance device (20) (S701); obtaining, on the basis of the coherent light, n vibrating speckle images of the detected object (10) under the ultrasonic stimulation (S702); obtaining, according to the n vibrating speckle images, a vibration waveform signal of the detected object (10); and determining, according to the vibration waveform signal, the category of the detected object (10) (S703); and prompting a user of the distance d between the user and the detected object (10) and the category thereof (S704). The method can comprehensively detect the object in the environment, and improves the object recognition precision, thereby improving the precision of the object recognition-based navigation for the blind, security monitoring level, and automotive navigation system.