Omnidirectional Fingertip Pressure Sensor Using Hall Effect

Autor: Jae-Chern Yoo, Moo-Jung Seo
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Sensors, Vol 21, Iss 7072, p 7072 (2021)
Sensors
Volume 21
Issue 21
Sensors (Basel, Switzerland)
ISSN: 1424-8220
Popis: When grasping objects with uneven or varying shapes, accurate pressure measurement on robot fingers is critical for precise robotic gripping operations. However, measuring the pressure from the sides of the fingertips remains challenging owing to the poor omnidirectionality of the pressure sensor. In this study, we propose an omnidirectional sensitive pressure sensor using a cone-shaped magnet slider and Hall sensor embedded in a flexible elastomer, which guarantees taking pressure measurements from any side of the fingertip. The experimental results indicate that the proposed pressure sensor has a high sensitivity (61.34 mV/kPa) in a wide sensing range (4–90 kPa) without blind spots on the fingertip, which shows promising application prospects in robotics.
Databáze: OpenAIRE