Development of a human-display interface with vibrotactile feedback for real-world assistive applications

Kiduk Kim, Ji Hoon Jeong, Jeong Hyun Cho, Sunghyun Kim, Jeonggoo Kang, Jeha Ryu, Seong Whan Lee

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

It is important to operate devices with control panels and touch screens assisted by haptic feedback in mobile environments such as driving automobiles and electric power wheelchairs. A lot of consideration is needed to give accurate haptic feedback, especially, presenting clear touch feedback to the elderly and people with reduced sensation is a very critical issue from healthcare and safety perspectives. In this study, we aimed to identify the perceptual characteristics for the frequency and direction of haptic vibration on the touch screen with vehicle-driving vibration and to propose an efficient haptic system based on these characteristics. As a result, we demonstrated that the detection threshold shift decreased at frequencies above 210 Hz due to the contact pressure during active touch, but the detection threshold shift increased at below 210 Hz. We found that the detection thresholds were 0.30-0.45 gpeak with similar sensitivity in the 80-270 Hz range. The haptic system implemented by reflecting the experimental results achieved characteristics suitable for use scenarios in automobiles. Ultimately, it could provide practical guidelines for the development of touch screens to give accurate touch feedback in the real-world environment.

Original languageEnglish
Article number592
Pages (from-to)1-17
Number of pages17
JournalSensors (Switzerland)
Volume21
Issue number2
DOIs
Publication statusPublished - 2021 Jan 2

Keywords

  • Active touch
  • Assistive technology
  • Haptics
  • Real-world environment
  • Vibrotactile feedback

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Electrical and Electronic Engineering

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