Use of tactons to communicate a risk level through an enactive shoe

Tchakouté, Landry Delphin Chapwouo; Gagnon, David J.; Ménélas, Bob-Antoine J.

doi:10.1007/s12193-018-0260-8

Cited by 6 publications

(9 citation statements)

References 37 publications

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“…The wearable device was designed based on some previous works [4,25,26]. We used an enactive shoe controlled by a smartphone that prevents falls related to a person's immediate environment or an abnormal gait [8,27,28].…”

Section: Wearable Devicementioning

confidence: 99%

“…The engine (haptuator) supply is a stable signal of 3.3 volts powered at a frequency of 100 Hz with an impedance of 10 ohms. This haptuator is not only capable of communicating, [4] but it is also capable of evaluating the impact of the auditory distraction [30] and the time taken to react to vibrotactile stimuli in the rest position [9]. Each haptuator measures 32 mm × 9 mm × 9 mm, with a frequency range between 90 and 1000 Hz [10].…”

Section: Wearable Devicementioning

confidence: 99%

“…This has an effect on the quality and the perception of the transmitted signal, especially in noisy environments [1]. Moreover, research in human-computer interaction (HCI) has shown the importance of choosing the haptic modality as a suitable channel for communication with humans [4][5][6]. We realized that in the area of health, the haptic channel could be used to orient people with low mobility [7].…”

Section: Introductionmentioning

confidence: 99%

“…It can also be used to reduce the risk of falling at home or in mobile situations by taking into account some aspects of the external environment, such as the types of soil [7,8]. In this context, in the past, we have demonstrated that it is possible to use the haptic channel to inform the user of a potential risk (low, medium, high, and very high) by using a vibrotactile stimulus sent to the plantar surface of the user's foot [4]. Moreover, we have shown that the time taken to perceive a vibrotactile stimulus can vary on certain types of soil [9], and this variation was independent of the device positioning on the human body [10].…”

Section: Introductionmentioning

confidence: 99%

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Perception of a Haptic Stimulus Presented Under the Foot Under Workload

Tchakouté

Ménélas

2020

Sensors

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It is clear that the haptic channel can be exploited as a communication medium for several tasks of everyday life. Here we investigated whether such communication can be altered in a cognitive load situation. We studied the perception of a vibrotactile stimulus presented under the foot when the attention is loaded by another task (cognitive load). The results demonstrated a significant influence of workload on the perception of the vibrotactile stimulus. Overall, we observed that the average score in the single-task (at rest) condition was greater than the overall mean score in the dual-task conditions (counting forwards, counting backwards, and walking). The walking task was the task that most influenced the perception of the vibrotactile stimulus presented under the foot.

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Section: Wearable Devicementioning

confidence: 99%

Section: Wearable Devicementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Perception of a Haptic Stimulus Presented Under the Foot Under Workload

Tchakouté

Ménélas

2020

Sensors

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“…In an example of the latter, a joystick provided with force feedback is used to train physically impaired toddlers to navigate through an predefined trajectory [4], an actuator filled seat provides haptic feedback to a car driver [13], and a vibrotactile armband guides blindfolded subjects through crowded environments [8]. Furthermore, other researchers have focused on user interface accessibility [7,14], algorithm design in haptic devices [5,30,66], and their inclusion with other technologies such as virtual reality [21,24].…”

Section: Introductionmentioning

confidence: 99%

Haptically assisted chemotaxis for odor source localization

et al. 2019

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Detection of chemical trails has multiple applications in industry and exploration, where prompt localization of dangerous substances encourages development of robust sensors, systems, and algorithms. Current chemical sensing robotics has focused on autonomous navigation, while transduction of chemical information to visual, tactile, or other types of sensory cues have not been thoroughly addressed. This work proposes the inclusion of a human operator in order to solve the robot navigation problem and proposes visual and haptic feedback arrangements that carry the information transmitted by the chemical sensors. A chemical source is placed in a simulated environment, which is navigated by a tracked robot controlled by human drivers. A multipoint haptic interface operates as the robot controller and provides force feedback according to the direction of the chemical gradient detected by the robot. Seven experiments test the tracking performance of three combinations of haptic and visual feedback under different air current configurations, which consistently prove the feasibility of a chemotaxis-based navigation system. Moreover, this work demonstrates with statistical significance that gradient information transmitted using haptic feedback minimizes the required time for reaching the chemical source. This enables the operator's visual capability in other important tasks during navigation (i.e., obstacle avoidance).

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