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Omnidirectional Fingertip Pressure Sensor Using Hall Effect.

Moo-Jung Seo¹, Jae-Chern Yoo¹

¹Department of Electrical and Computer Engineering, College of Information and Communication Engineering, Sungkyunkwan University, Suwon 440-746, Korea.

Sensors (Basel, Switzerland)

|November 13, 2021

Summary

This summary is machine-generated.

This study introduces an omnidirectional pressure sensor for robotic fingers, enabling precise gripping of complex objects. The novel sensor overcomes limitations in side-pressure measurement, enhancing robotic manipulation capabilities.

Keywords:

Hall effect electromagnetic fingertip omnidirectional pressure sensor silicone elastomer

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Area of Science:

Robotics
Sensor Technology
Materials Science

Background:

Accurate pressure measurement on robotic fingertips is essential for grasping diverse objects.
Existing sensors struggle with omnidirectional pressure detection on fingertips.
Side-pressure sensing is a significant challenge in robotic manipulation.

Purpose of the Study:

To develop an omnidirectional pressure sensor for robotic fingertips.
To address the limitations of current sensors in measuring pressure from all sides.
To improve the precision and adaptability of robotic gripping operations.

Main Methods:

Designed an omnidirectional pressure sensor incorporating a cone-shaped magnet slider and Hall sensor.
Embedded the sensor components within a flexible elastomer material.
Tested the sensor's performance in measuring pressure from various angles on a robotic fingertip.

Main Results:

Achieved high sensor sensitivity of 61.34 mV/kPa.
Demonstrated a wide sensing range from 4-90 kPa.
Confirmed omnidirectional sensing capability without blind spots on the fingertip.

Conclusions:

The proposed omnidirectional pressure sensor effectively measures pressure from all sides of a robotic fingertip.
The sensor's high sensitivity and wide range show significant potential for advanced robotic applications.
This innovation enhances robotic grasping precision for objects with uneven or varying shapes.