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Noncontact human-machine interaction based on hand-responsive infrared structural color.

Shun An1, Hanrui Zhu1, Chunzhi Guo2

  • 1State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China.

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|March 19, 2022
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Summary
This summary is machine-generated.

This study introduces a novel noncontact human-machine interaction method using hand-emitted infrared light and metallic gratings. This approach enables touchless control of devices and robots, even in complete darkness.

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Area of Science:

  • Optoelectronics
  • Human-Computer Interaction
  • Robotics

Background:

  • Traditional noncontact human-machine interactions face limitations in interaction distance and environmental conditions, such as low light or darkness.
  • Existing methods often require specific sensors or controlled environments, restricting their practical applicability.

Purpose of the Study:

  • To develop a novel noncontact human-machine interaction (HMI) system utilizing infrared (IR) light emitted by the human hand.
  • To explore the use of metallic gratings as an interface to detect IR radiation and generate visible structural colors.
  • To demonstrate the feasibility of this IR structural color-based HMI for interactive displays and robotic control.

Main Methods:

  • Utilized metallic gratings as the human-machine interface to capture infrared radiation emitted from the hand.
  • Developed a system where hand proximity and movement generate distinct infrared structural color patterns.
  • Integrated the system for applications including a user-interactive touchless display and real-time control of a robot vehicle.

Main Results:

  • Successfully demonstrated the generation of visible infrared structural colors in response to hand proximity and movement.
  • Achieved flexible interaction distances ranging from centimeters to tens of centimeters.
  • Validated the system's functionality in low lighting conditions and complete darkness.

Conclusions:

  • The proposed infrared structural color-based human-machine interaction offers a hygienic, intelligent, and versatile alternative to existing noncontact methods.
  • This technology overcomes limitations of distance and ambient light, broadening potential applications in human-robot communication and interactive systems.
  • Provides a complementary approach to traditional noncontact HMIs, enhancing usability in diverse environments.