Wearable Photoelectric Fingertip Force Sensing System Based on Blood Volume Changes without Sensory Interference

Dong, Kangkang; Chu, Yao; Tian, Xuanchen; Fang, Tianqi; Ye, Xiongying; Wang, Xiaohao; Tang, Fei

doi:10.1021/acsami.3c06469

Cited by 3 publications

(2 citation statements)

References 38 publications

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“…This method preserves the natural tactile sensation of the fingertip. Our previous work has successfully applied this system to measure fingertip force in traditional Chinese pulse diagnosis [17] .…”

Section: Experiments and Discussionmentioning

confidence: 99%

Design and modeling of a fingertip force sensing system without tactile interference

Dong,

Deng,

Liu

et al. 2024

Fourth International Conference on Sensors and Information Technology (ICSI 2024)

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It's important to measure the force used during fingertip manipulation without affecting the natural sense of touch when digitizing the skills of experienced craftsmen. However, most force sensors need to be placed between the skin and the objects which can interfere with the natural skin sensation. Here, we developed a wearable fingertip force sensing system that can monitor fingertip force without affecting tactile sensation. The system measures the changes of blood volume in the fingertip by photoplethysmography (PPG) to obtain the fingertip force during manipulation. A hemodynamics model of fingertip blood flow was established, and variations in fingertip blood vessel diameter under force conditions were simulated and analyzed. The scalability of the hemodynamics model is verified by experiments with different operating contact angles. This work sheds new light on areas such as digitization of the skills of experienced people and humanmachine interaction.

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Section: Experiments and Discussionmentioning

confidence: 99%

Design and modeling of a fingertip force sensing system without tactile interference

Dong,

Deng,

Liu

et al. 2024

Fourth International Conference on Sensors and Information Technology (ICSI 2024)

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“…It also makes the system have a relatively broad research prospect [14][15]. However, there are also some issues with wireless power supply sensing systems at present, such as low data throughput, short communication distance, low sensing sensitivity, and low efficiency [16][17]. Corresponding methods have been designed to address these issues.…”

Section: A Design Of Passive Wireless Low Power Hydrogen Concentratio...mentioning

confidence: 99%

Wireless Power Supply Sensing Tags Based on Anti-Collision Algorithm for Sensing Systems

2024

IEEE Access

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In wireless sensor networks, sensing tags are battery powered, which also limits the battery life. Therefore, it is particularly important to study self powered sensing tags. At present, passive wireless identification systems can achieve self powered communication through tags.However, wireless power supply sensing systems have problems such as low efficiency and short communication distance. To reduce the power consumption of sensing tags and improve the efficiency of sensing systems, a passive wireless low-power hydrogen concentration sensing system is designed. To further reduce the power consumption of sensing tags, a passive wireless magnetic field intensity sensing system is developed.In addition, to solve the low efficiency of multiple sensing labels in wireless power supply sensing systems, an efficient anticollision algorithm based on dynamic binary query trees is designed. According to the research results, in the cold start indoor environment, the energy collection rate of the sensing tag designed in the research was 0.081mJ/s, and the energy collection efficiency was 25.7%.In single/dual sensor mode, the maximum values of sensing error were 2.1% and 5.2%, respectively. The maximum recognition time of the anticollision algorithm based on dynamic multi base query tree was 2.78s, and the minimum value was 1.31s.The research results can provide methodological and technical support for the improvement of wireless power supply sensing systems, expanding the application range of wireless power supply sensing systems.

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Recent Advances in Tactile Sensory Systems: Mechanisms, Fabrication, and Applications

Xi,

Yang,

et al. 2024

Nanomaterials

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Flexible electronics is a cutting-edge field that has paved the way for artificial tactile systems that mimic biological functions of sensing mechanical stimuli. These systems have an immense potential to enhance human–machine interactions (HMIs). However, tactile sensing still faces formidable challenges in delivering precise and nuanced feedback, such as achieving a high sensitivity to emulate human touch, coping with environmental variability, and devising algorithms that can effectively interpret tactile data for meaningful interactions in diverse contexts. In this review, we summarize the recent advances of tactile sensory systems, such as piezoresistive, capacitive, piezoelectric, and triboelectric tactile sensors. We also review the state-of-the-art fabrication techniques for artificial tactile sensors. Next, we focus on the potential applications of HMIs, such as intelligent robotics, wearable devices, prosthetics, and medical healthcare. Finally, we conclude with the challenges and future development trends of tactile sensors.

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Wearable Photoelectric Fingertip Force Sensing System Based on Blood Volume Changes without Sensory Interference

Cited by 3 publications

References 38 publications

Design and modeling of a fingertip force sensing system without tactile interference

Design and modeling of a fingertip force sensing system without tactile interference

Wireless Power Supply Sensing Tags Based on Anti-Collision Algorithm for Sensing Systems

Recent Advances in Tactile Sensory Systems: Mechanisms, Fabrication, and Applications

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