Improvements on a Sensitivity Adjustable 3-Axis Soft Skin Sensor with an Electromagnet

Holgado, Alexis C.; Lopez, Javier Alejandro Alvarez; Tomo, Tito Pradhono; Somlor, Sophon; Sugano, Shigeki

doi:10.1109/sii46433.2020.9026228

Cited by 3 publications

(5 citation statements)

References 13 publications

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“…When the external force is applied to the flexible body, the distance between two layers changes, thereby changing the output of detection coils. There are some similar studies with coils as the source of magnetic field [ 50 , 107 ].…”

Section: Classification and Developmentmentioning

confidence: 99%

Recent Progress of Biomimetic Tactile Sensing Technology Based on Magnetic Sensors

Man

Chen

2022

Biosensors

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In the past two decades, biomimetic tactile sensing technology has been a hot spot in academia. It has prospective applications in many fields such as medical treatment, health monitoring, robot tactile feedback, and human–machine interaction. With the rapid development of magnetic sensors, biomimetic tactile sensing technology based on magnetic sensors (which are called magnetic tactile sensors below) has been widely studied in recent years. In order to clarify the development status and application characteristics of magnetic tactile sensors, this paper firstly reviews the magnetic tactile sensors from three aspects: the types of magnetic sensors, the sources of magnetic field, and the structures of sensitive bodies used in magnetic tactile sensors. Secondly, the development of magnetic tactile sensors in four applications of robot precision grasping, texture characterization, flow velocity measurement, and medical treatment is introduced in detail. Finally, this paper analyzes technical difficulties and proposes prospective research directions for magnetic tactile sensors.

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Section: Classification and Developmentmentioning

confidence: 99%

Recent Progress of Biomimetic Tactile Sensing Technology Based on Magnetic Sensors

Man

Chen

2022

Biosensors

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“…A layer of flexible material is placed on top of the conductive tape. In past works [28], we have found that neoprene of 5 mm in thickness works well for both normal and shear force measurements, so we adopted the same material for the current iteration.…”

Section: Working Principle Of Sensormentioning

confidence: 99%

“…Furthermore, the power consumption of the sensor is closely related to the power consumption of the coil board. Previous versions of the PCB coil [4,28] needed direct current values of as high as 1500 mA, making the temperature of the PCB an important point to consider. Specifically, in [28], several current values were tested and a subset was adopted to keep the temperature of the coil below 45 • C.…”

Section: Sensor Footprint Reductionmentioning

confidence: 99%

“…Figure 2 shows a manufactured coil. The new coil is 1/4 of the area of the previously used PCB embedded coil [28]. Based on the American wire gauge (AWG) standard, the diameter of the copper wire used for the coil is very close to the AWG30 gauge.…”

Section: New Coilmentioning

confidence: 99%

“…The reduction in the size of the coil determines that the next step in the redesign process is to revisit the shape of the middle layer that separates the sensor from the coil. Past experiments presented in [28] showed that 5 mm-thick neoprene showed good results for normal and shear force experiments; thus, we decided to keep this material for the current iteration of the sensor. However, because the size of the coil has been significantly reduced, the neoprene shape previously presented could not be used.…”

Section: Middle Layer Materialsmentioning

confidence: 99%

See 2 more Smart Citations

A Multimodal, Adjustable Sensitivity, Digital 3-Axis Skin Sensor Module

Holgado

Tomo

Somlor

et al. 2020

Sensors

Self Cite

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This paper presents major improvements to a multimodal, adjustable sensitivity skin sensor module. It employs a geomagnetic 3-axis Hall effect sensor to measure changes in the position of a magnetic field generated by an electromagnet. The electromagnet is mounted on a flexible material, and different current values can be supplied to it, enabling adjustments to the sensitivity of the sensor during operation. Capacitive sensing has been added in this iteration of the module, with two sensing modalities: “pre-touch” detection with proximity sensing and normal force capacitive sensing. The sensor has been designed to be interconnected with other sensor modules to be able to cover large surfaces of a robot with normal and shear force sensing and object proximity detection. Furthermore, this paper introduces important size reductions of the previous sensor design, calibration results, and further analysis of other sensor characteristics.

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Active electronic skin: an interface towards ambient haptic feedback on physical surfaces

Guo,

Wang,

Tong

et al. 2024

npj Flex Electron

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In the era of ubiquitous computing with flourished visual displays in our surroundings, the application of haptic feedback technology still remains in its infancy. Bridging the gap between haptic technology and the real world to enable ambient haptic feedback on various physical surfaces is a grand challenge in the field of human-computer interaction. This paper presents the concept of an active electronic skin, characterized by three features: richness (multi-modal haptic stimuli), interactivity (bi-directional sensing and actuation capabilities), and invisibility (transparent, ultra-thin, flexible, and stretchable). By deploying this skin on physical surfaces, dynamic and versatile multi-modal haptic display, as well as tactile sensing, can be achieved. The potential applications of this skin include two categories: skin for the physical world (such as intelligent home, intelligent car, and intelligent museum), and skin for the digital world (such as haptic screen, wearable device, and bare-hand device). Furthermore, existing skin-based haptic display technologies including texture, thermal, and vibrotactile feedback are surveyed, as well as multidimensional tactile sensing techniques. By analyzing the gaps between current technologies and the goal of ambient haptics, future research topics are proposed, encompassing fundamental theoretical research on the physiological and psychological perception mechanisms of human skin, spatial-temporal registration among multimodal haptic stimuli, integration between sensing and actuation, and spatial-temporal registration between visual and haptic display. This concept of active electronic skin is promising for advancing the field of ambient haptics, enabling seamless integration of touch into our digital and physical surroundings.

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Improvements on a Sensitivity Adjustable 3-Axis Soft Skin Sensor with an Electromagnet

Cited by 3 publications

References 13 publications

Recent Progress of Biomimetic Tactile Sensing Technology Based on Magnetic Sensors

Recent Progress of Biomimetic Tactile Sensing Technology Based on Magnetic Sensors

A Multimodal, Adjustable Sensitivity, Digital 3-Axis Skin Sensor Module

Active electronic skin: an interface towards ambient haptic feedback on physical surfaces

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