Muscle activity evaluation using force sensitive resistors

Kreil, Matthias; Ogris, Georg; Lukowicz, Paul

doi:10.1109/issmdbs.2008.4575029

Cited by 16 publications

(6 citation statements)

References 5 publications

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“…Though exoskeleton robots for medical purposes have been in geometric progression over the past years, most designs today compensate for mobility loss or lower limb joint disorders. Researchers have focused on kinematic optimization of the exoskeleton [28,87], multimode rehabilitation [54,57,58], and others have evaluated the motion intention of the wearer as evidence of support for general use [88][89][90], but the designs are still not sustainable safety-wise for personal use.…”

Section: Distinctions In the Exoskeleton Classificationsmentioning

confidence: 99%

“…For example, a string encoder with IMUs [89], were used in teleoperation to measure the position and orientation of a teaching tool and then to apply the generated signals to a robot manipulator as a haptic device. FSR is applied in [137] to analyze muscle activity patterns during bicycling and in [90] to test the sensing limits in comparison with other sensing devices.…”

Section: Model-based Controlmentioning

confidence: 99%

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A Survey on Design and Control of Lower Extremity Exoskeletons for Bipedal Walking

2022

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Exoskeleton robots are electrically, pneumatically, or hydraulically actuated devices that externally support the bones and cartilage of the human body while trying to mimic the human movement capabilities and augment muscle power. The lower extremity exoskeleton device may support specific human joints such as hip, knee, and ankle, or provide support to carry and balance the weight of the full upper body. Their assistive functionality for physically-abled and disabled humans is demanded in medical, industrial, military, safety applications, and other related fields. The vision of humans walking with an exoskeleton without external support is the prospect of the robotics and artificial intelligence working groups. This paper presents a survey on the design and control of lower extremity exoskeletons for bipedal walking. First, a historical view on the development of walking exoskeletons is presented and various lower body exoskeleton designs are categorized in different application areas. Then, these designs are studied from design, modeling, and control viewpoints. Finally, a discussion on future research directions is provided.

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Section: Distinctions In the Exoskeleton Classificationsmentioning

confidence: 99%

Section: Model-based Controlmentioning

confidence: 99%

A Survey on Design and Control of Lower Extremity Exoskeletons for Bipedal Walking

2022

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“…This method is not susceptible to skin impedance changes and surrounding environment interference, and the signal acquisition and processing method is simpler. Georg Ogris et al used force-sensitive resistors (FSRs) to make wearable devices and verified the feasibility of obtaining upper and lower limb muscles [5] [6]. Peter B. Shull et al [7][8] [9] wrapped the air pressure sensor in rubber, integrated ten air pressure sensitive units in the wristband, and sensed the changes in the shape of the muscles around the wrist, which can accurately recognize different gestures.…”

Section: Introductionmentioning

confidence: 99%

Design of muscle state sensing system based on flexible micro airbag structure

Zhang

Pan

Song

2022

Second International Conference on Advanced Algorithms and Signal Image Processing (AASIP 2022)

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Sensing muscle state is an important method for obtaining human movement intentions. In this paper, air pressure chips were used as the sensitive elements to complete the design of a new type of flexible force sensing system based on the flexible micro airbag structure. The system was used to conduct experiments on 4 subjects to collect the force myography (FMG) signals of five different hand gestures. The gesture classification accuracies of 85.3%, 94.2%, and 99.3% were obtained by using different pattern recognition algorithms of LDA, SVM, and KNN. Preliminary experimental results show that the sensing system designed in this paper can effectively sense muscle states and has great potential for application in human-computer interaction control.

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“…In particular, the EMG sensor has been used in many studies on gesture recognition [17,18,19]. Many researchers used EMG sensors for recognizing the intention of an operator [17,20,21,22]. Recently, to control digital devices, Thalmic Labs Co. developed an EMG-based gesture recognition device, which is referred to as Myo [5].…”

Section: Introductionmentioning

confidence: 99%

Implementation of Hand Gesture Recognition Device Applicable to Smart Watch Based on Flexible Epidermal Tactile Sensor Array

Byun

Lee

2019

Micromachines

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Ever since the development of digital devices, the recognition of human gestures has played an important role in many Human-Computer interface applications. Various wearable devices have been developed, and inertial sensors, magnetic sensors, gyro sensors, electromyography, force-sensitive resistors, and other types of sensors have been used to identify gestures. However, there are different drawbacks for each sensor, which affect the detection of gestures. In this paper, we present a new gesture recognition method using a Flexible Epidermal Tactile Sensor based on strain gauges to sense deformation. Such deformations are transduced to electric signals. By measuring the electric signals, the sensor can estimate the degree of deformation, including compression, tension, and twist, caused by movements of the wrist. The proposed sensor array was demonstrated to be capable of analyzing the eight motions of the wrist, and showed robustness, stability, and repeatability throughout a range of experiments aimed at testing the sensor array. We compared the performance of the prototype device with those of previous studies, under the same experimental conditions. The result shows our recognition method significantly outperformed existing methods.

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Muscle activity evaluation using force sensitive resistors

Cited by 16 publications

References 5 publications

A Survey on Design and Control of Lower Extremity Exoskeletons for Bipedal Walking

A Survey on Design and Control of Lower Extremity Exoskeletons for Bipedal Walking

Design of muscle state sensing system based on flexible micro airbag structure

Implementation of Hand Gesture Recognition Device Applicable to Smart Watch Based on Flexible Epidermal Tactile Sensor Array

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