JRM Vol.35 No.4 pp. 1073-1083
doi: 10.20965/jrm.2023.p1073


Development of Action-Intention Indicator for Sidewalk Vehicles

Tomoyuki Ohkubo* ORCID Icon, Riku Yamamoto**, and Kazuyuki Kobayashi*** ORCID Icon

*Nippon Institute of Technology
4-1 Gakuendai, Miyashiro-machi, Minamisaitama-gun, Saitama 345-8501, Japan

**Graduate School of Science and Engineering, Hosei University
3-7-2 Kajino-cho, Koganei, Tokyo 184-8584, Japan

***Faculty of Science and Engineering, Hosei University
3-7-2 Kajino-cho, Koganei, Tokyo 184-8584, Japan

October 27, 2022
May 12, 2023
August 20, 2023
intention indicator, differential-wheeled mechanism, mobile robot, RGB LED strip light, power consumption

Many small ground vehicles that travel on sidewalks, such as electric wheelchairs, are equipped with a differential-wheeled mechanism to turn precisely on the spot and accurately control their trajectory. Conventional ground vehicles operating on public roads have action indicator devices such as blinkers and brake lights, which are effective in preventing collisions during operations. However, similar blinkers may not be suitable for sidewalk navigation because the differential-wheeled mechanism allows a neutral turn without considering the surroundings. In this study, we developed a new action-intention indicator for future differential-wheeled mobile robots that employs RGB light-emitting diode strip lights to express various colors and complex blinking patterns. Sensitivity evaluation experiments were conducted with approximately 50 subjects to determine the optimal colors and blinking patterns for a differential-wheeled mobile robot. Additionally, reaction-time acquisition experiments were conducted to confirm the effectiveness of the proposed intention-display device for mobile robots. Finally, we evaluated whether the determined blinking patterns exhibited appropriate power consumption.

The action-intention indicator for sidewalk vehicles

The action-intention indicator for sidewalk vehicles

Cite this article as:
T. Ohkubo, R. Yamamoto, and K. Kobayashi, “Development of Action-Intention Indicator for Sidewalk Vehicles,” J. Robot. Mechatron., Vol.35 No.4, pp. 1073-1083, 2023.
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Last updated on Sep. 29, 2023