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Updated: Jun 27, 2026

Measuring Changes in Tactile Sensitivity in the Hind Paw of Mice Using an Electronic von Frey Apparatus

Measuring Changes in Tactile Sensitivity in the Hind Paw of Mice Using an Electronic von Frey Apparatus

Published on: December 19, 2013

High-Sensitivity Whisker Sensor for Application in Bionic Electronic System.

Kunru Li¹, Shuo Qian², Yangyanhao Guo¹

¹State Key Laboratory of Optoelectronic Dynamic Measurement Technology and Instrumentation for Extreme Environments, North University of China, Taiyuan 030051, China.

|June 3, 2025

Summary

This summary is machine-generated.

A novel high-sensitivity whisker sensor (HSWS) mimics rodent whiskers for advanced environmental sensing. This bionic sensor accurately detects force direction and magnitude, enabling applications in robotics and autonomous navigation.

Keywords:

bionic electronic systems multidirection force identification piezoresistive principle screen printing ultrahigh sensitivity whisker sensor

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Last Updated: Jun 27, 2026

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Area of Science:

Bionic electronic systems
Robotics
Sensor technology

Background:

Whisker sensors are crucial for environmental perception in confined spaces.
Traditional sensors face limitations in size, cost, and adaptability.
Previous whisker sensors struggled with sensitivity and force direction detection.

Purpose of the Study:

To develop a high-sensitivity whisker sensor (HSWS) inspired by rodent whiskers.
To enhance the sensitivity and directional force detection capabilities of bionic sensors.
To explore applications in autonomous navigation and robotic systems.

Main Methods:

Designed a torque amplification structure to enhance mechanical stimulus transformation.
Utilized a varistor sensitive layer to improve responsiveness to external stimuli.
Tested sensor durability, stability, and ability to detect environmental parameters like wind speed and texture.

Main Results:

Achieved a high sensitivity of 62.6 kPa^-1.
Successfully enabled precise calculation of external force magnitude and direction.
Demonstrated excellent durability over 5000 testing cycles.
Integrated into a bionic electronic mouse for autonomous navigation in a maze.

Conclusions:

The developed HSWS offers superior sensitivity and directional sensing.
The torque amplification design is key to enhanced performance.
The sensor shows significant potential for rescue, medical, and underwater robots.