# A piezoelectric-based advanced wearable: obstacle avoidance for the visually impaired built into a backpack

> Research article (Nano-, Bio-, Info-Tech Sensors, and 3D Systems IV, 2020) · cited 12× · AI/ML

**Wikidata**: [openalex:W3020025945](https://www.wikidata.org/wiki/openalex:W3020025945)  
**Source**: https://4ort.xyz/entity/a-piezoelectric-based-advanced-wearable-obstacle-avoidance-for-the-visually-impaired-built-into-a-backpack