Polymer Infrared Proximity Sensor Array

Chen, En-Chen; Shih, Cheng-Yang; Dai, Mingzhi; Yeh, Han-Cheng; Chao, Yu‐Chiang; Meng, Hsin‐Fei; Zan, Hsiao‐Wen; Liu, Wei‐Ren; Chiu, Yi‐Chen; Yeh, Yao‐Tsung; Sun, Chien-Jen; Horng, Shi–Jinn; Hsu, Chain‐Shu

doi:10.1109/ted.2011.2107517

Cited by 25 publications

(14 citation statements)

References 6 publications

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“…Therefore, E‐skin equipped with proximity sensing function is expected to be used in artificial intelligence, [ 9 ] human–machine interaction, [ 1 ] and robotics. [ 2 ] Theoretically, proximity sensing can be realized based on any long‐range interactions, including magnetic, [ 5b ] optical, [ 9,38 ] ultrasound, [ 39 ] and electrostatic [ 17 ] interactions. In recent years, FET proximity sensors are reported by using organic [ 25,40 ] and oxide semiconductors [ 17b ] as active layers.…”

Section: Resultsmentioning

confidence: 99%

A Multifunctional Flexible Ferroelectric Transistor Sensor for Electronic Skin

Liu

Dong

Zeng

et al. 2021

Adv Materials Inter

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Electronic skin (E‐skin) is a device that mimics the functions of human skin and is attracting more and more attention as a novel platform for human–machine interaction, health diagnostics, therapeutics, robotics, prosthesis, and monitoring. Here, a flexible ferroelectric field‐effect transistor (FeFET) is developed as a multifunctional sensor prototype for electronic skin. Ferroelectric poly(vinylidene fluoride trifluoroethylene) and amorphous tungsten‐doped indium oxide are utilized to construct the FeFET. The device possesses three‐in‐one sensing performance. It can monitor external stress with a linear sensitivity of 4.6 nA kPa−1 in broad pressure range between 50 Pa and 150 kPa and detect temperature change between 0 and 70 °C. Electrostatic interaction further endows the device with proximity sensing function to perceive the approach of a charged object. The device is further developed for detection of a human's physiological signals, such as pulsation and respiration, and finger's action. It shows good bending endurance which maintains its transfer characteristic after 1000 cycles of bending operation. Moreover, the device's responses to both temperature change and charged objects are investigated when it is under bending condition with radius of curvature down to 1.09 mm. This multifunctional sensor prototype is expected to contribute to the next‐generation E‐skin.

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Section: Resultsmentioning

confidence: 99%

A Multifunctional Flexible Ferroelectric Transistor Sensor for Electronic Skin

Liu

Dong

Zeng

et al. 2021

Adv Materials Inter

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“…There are many types of sensors that can detect the proximity of a physical object. Proximity sensors use many physical properties, such as light reflection [ 23 , 24 , 25 , 26 ], sound wave reflection [ 27 , 28 , 29 , 30 , 31 ], reflection of an electromagnetic wave in the radar [ 32 , 33 , 34 ], and also detecting changes in the selected parameter in the space around the sensor, such as electric permeability [ 35 , 36 , 37 , 38 , 39 ], magnetic permeability [ 38 ], or temperature [ 25 ].…”

Section: Related Researchmentioning

confidence: 99%

“…Light detectors are placed around the light emitter to detect light reflected from the object. By measuring the current in the photodetectors, the presence of the object [ 23 ] is detected. Detection of the presence of an object in the vicinity can be performed with the use of optical rangefinders placed in integrated circuits, like TCND5000 [ 26 ].…”

Section: Related Researchmentioning

confidence: 99%

Human Body Parts Proximity Measurement Using Distributed Tactile Robotic Skin

Klimaszewski

Władziński

2021

Sensors

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Safety in human–machine cooperation is the current challenge in robotics. Safe human–robot interaction requires the development of sensors that detect human presence in the robot’s workspace. Detection of this presence should occur before the physical collision of the robot with the human. Human to robot proximity detection should be very fast, allowing machine elements deceleration to velocities safe for human–machine collision. The paper presents a new, low-cost design of distributed robotic skin, which allows real-time measurements of the human body parts proximity. The main advantages of the proposed solution are low cost of its implementation based on comb electrodes matrix and real-time operation due to fast and simple electronic design. The main contribution is the new idea of measuring the distance to human body parts by measuring the operating frequency of a rectangular signal generator, which depends on the capacity of the open capacitor. This capacitor is formed between the comb electrodes matrix and a reference plate located next to the matrix. The capacitance of the open capacitor changes if a human body part is in vicinity. The application of the developed device can be very wide. For example, in the field of cooperative robots, it can lead to the improvement of human–machine interfaces and increased safety of human–machine cooperation. The proposed construction can help to meet the increasing requirements for cooperative robots.

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“…Wearable infrared devices, based on photoresistors with flexible thin film germanium sensing layer, will be presented for short range sensors [34,35]. The system is conceived by housing an infrared source or multiple infrared sources of the robot and integrating the photoresistors directly on a work glove.…”

Section: Problem Statement and Proposed Approachmentioning

confidence: 99%

Systemic Approach for the Definition of a Safer Human-Robot Interaction

Pecora

Maiolo

Minotti

et al. 2019

Factories of the Future

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Smart factories must speed up their processes to face new manufacturing challenges and, at the same time, demonstrate an extremely high degree of flexibility to reduce production costs and time. This kind of issues can be addressed by the cooperation between humans and robots in a mixed human-robot working environment. Robots have the compelling advantage of spatial precision and repeatability as well as the capability of applying defined forces. Humans, on the other hand, are especially skilled at complex manipulations and adapting to changing task requirements. In this complicate scenario of co-shared workplace and continuous human-robot interaction, safety strategies are a key requirement to avoid possible injuries to humans or fatal accidents. This chapter proposes a systemic approach to respond to these requirements. The approach merges and manages multiple sensing sources, redundant transmission protocols and software decision mechanisms, aiming to guarantee a continuous and reconfigurable co-share scenario that enables an operative interaction between human workers and robots in a controlled and safe environment. Furthermore, new technological solutions and innovative methodologies are presented for the definition of a safer workplace in human-robot interaction scenarios. 8.1 Scientific and Industrial Motivations The need to face the production of complex families of product, with short life cycles, often characterized by strongly variable production patterns, requires factories to be able to quickly evolve and reconfigure [1]. These reconfigurable factories

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Polymer Infrared Proximity Sensor Array

Cited by 25 publications

References 6 publications

A Multifunctional Flexible Ferroelectric Transistor Sensor for Electronic Skin

A Multifunctional Flexible Ferroelectric Transistor Sensor for Electronic Skin

Human Body Parts Proximity Measurement Using Distributed Tactile Robotic Skin

Systemic Approach for the Definition of a Safer Human-Robot Interaction

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