Hand Guidance Using Grasping Metaphor and Wearable Haptics

Baldi, Tommaso Lisini; D'Aurizio, Nicole; Prattichizzo, Domenico

doi:10.1109/haptics45997.2020.ras.hap20.3.3eea0b25

Cited by 7 publications

(3 citation statements)

References 24 publications

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“…sion occupied in finding objects), impaired due to personal protective equipment (e.g., worker wearing headphones), or inappropriate (e.g., student attending lecture, spectator during a public show). Vibrotactile anklets [21], dorsal and waist belts [22], bracelets [23], and rings [24] have been deeply studied and extensively exploited as haptic means for providing information to users. Examples range from encoding complex directional cues to human-robot collaboration, from enhancing human-human social activities, to limb guidance and situational awareness.…”

Section: Introductionmentioning

confidence: 99%

Preventing Undesired Face-Touches With Wearable Devices and Haptic Feedback

et al. 2020

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The alarming morbidity of COVID-19 has drawn the attention to the social role of hygiene rules, with a particular focus on the importance of limiting face-touch occurrences. To deal with this aspect, we present No Face-Touch, a system able to estimate hand proximity to face and notify the user whenever a face-touch movement is detected. In its complete setup, the system consists of an application running on the smartwatch and a wearable accessory. Its ease of implementation allows this solution to be ready-touse and large-scale deployable. We developed two gesture detection approaches compatible with sensors embedded in recent smartwatches, i.e. inertial and magnetic sensors. After preliminary tests to tune target gesture parameters, we tested the two approaches and compared their accuracy. The final phase of this project consisted in exploiting the most robust approach in a daily living scenario during a 6-days campaign. Experimental results revealed the effectiveness of the proposed system, demonstrating its impact in reducing the number of face-touches and their duration.

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Section: Introductionmentioning

confidence: 99%

Preventing Undesired Face-Touches With Wearable Devices and Haptic Feedback

et al. 2020

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“…for guidance purposes, usually relying on vibration [2] or skin-stretch [3]. These solutions have been usually used to increase the mobility of blind people [2], [4], or targeting training/rehabilitation purposes [5].…”

Section: Introductionmentioning

confidence: 99%

Multi-Cue Haptic Guidance Through Wearables for Enhancing Human Ergonomics

Fani¹,

Ciotti²,

Bianchi³

2022

IEEE Trans. Haptics

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Wearable haptic systems can be easily integrated with the human body and represent an effective solution for a natural and unobtrusive stimulus delivery. These characteristics can open interesting perspectives for different applications, such as haptic guidance for human ergonomics enhancement, e.g. during human-robot collaborative tasks in industrial scenarios, where the usage of the visual communication channel can be problematic. In this work, we propose a wearable multi-cue system that can be worn at the arm level on both the two upper limbs, which conveys both squeezing stimuli (provided by an armband haptic device) and vibration, to provide corrective feedback for posture balancing along the user's frontal and sagittal plane, respectively. We evaluated the effectiveness of our system in delivering directional information to control the user's center of pressure position on a balancing board. We compared the here proposed haptic guidance with visual guidance cues. Results show no statistically significant differences in terms of success rate and time for task completion for the two conditions. Furthermore, participants underwent through a Subjective Quantitative Evaluation and a NASA-TLX test, evaluating the wearable haptic system as intuitive and effective.

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“…The introduction of these devices allowed delivering different types of stimuli in a natural and unobtrusive way. Hence, their use to provide directional feedback has been widely investigated in different fields, ranging from guidance systems for blind people [13] to rehabilitation and training procedures [14], [15].…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of Vibrotactile and Slide-and-Squeeze Haptic Feedback Devices for Limbs Postural Adjustment

Lorenzini¹,

Ciotti²,

Gandarias³

et al. 2022

Preprint

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Recurrent or sustained awkward body postures are among the most frequently cited risk factors to the development of work-related musculoskeletal disorders (MSDs).To prevent workers from adopting harmful configurations but also to guide them toward more ergonomic ones, wearable haptic devices may be the ideal solution. In this paper, a vibrotactile unit, called ErgoTac, and a slide-and-squeeze unit, called CUFF, were evaluated in a limbs postural correction setting. Their capability of providing single-joint (shoulder or knee) and multi-joint (shoulder and knee at once) guidance was compared in twelve healthy subjects, using quantitative task-related metrics and subjective quantitative evaluation. An integrated environment was also built to ease communication and data sharing between the involved sensor and feedback systems. Results show good acceptability and intuitiveness for both devices. ErgoTac appeared as the suitable feedback device for the shoulder, while the CUFF may be the effective solution for the knee. This comparative study, although preliminary, was propaedeutic to the potential integration of the two devices for effective whole-body postural corrections, with the aim to develop a feedback and assistive apparatus to increase workers' awareness about risky working conditions and therefore to prevent MSDs.

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Hand Guidance Using Grasping Metaphor and Wearable Haptics

Cited by 7 publications

References 24 publications

Preventing Undesired Face-Touches With Wearable Devices and Haptic Feedback

Preventing Undesired Face-Touches With Wearable Devices and Haptic Feedback

Multi-Cue Haptic Guidance Through Wearables for Enhancing Human Ergonomics

Performance Analysis of Vibrotactile and Slide-and-Squeeze Haptic Feedback Devices for Limbs Postural Adjustment

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