Intelligent human computer interaction based on non redundant EMG signal

Sun, Ying; Xu, Chao; Li, Gongfa; Xu, Wanfen; Kong, Jianyi; Du, Jiang; Tao, Bo; Chen, Disi

doi:10.1016/j.aej.2020.01.015

Cited by 160 publications

(101 citation statements)

References 42 publications

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“…The problem of generating test paper is expressed as a five tuple, which corresponds to the attributes of each question, including subjects, contents, knowledge points, difficulties, etc. [20]. It is a set of finite variables, V = {v 1 , v 2 , ⋯, v n }; L corresponds to the range of each attribute, which is a finite number set, L = {l 1 , l 2 , ⋯, l n }; S corresponds to the constraint of each attribute and is a set of finite rules, S = {s 1 , s 2 , ⋯, s n }; R corresponds to the user's constraint relation, which is a finite rule set, R = {r 1 , r 2 , ⋯, r n }; C indicates that the test questions selected from the test library to meet the various constraints are a sequence of questions, C = {c 1 , c 2 , ⋯, c n }.…”

Section: Establishment Of a Test Paper Modelmentioning

confidence: 99%

RETRACTED ARTICLE: Research on English teaching system based on artificial intelligence and WBIETS wireless network system

Tan

2020

J Wireless Com Network

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The English teaching network system is a distant teaching based on the Web. This teaching method can stimulate students' interests so that students can acquire knowledge voluntarily, and automatic test paper generation is one of the most important modules in the English teaching network system. This article first briefly introduces the architecture of the wireless sensor network and then gives a wireless sensor network teaching experiment system based on a genetic algorithm. The multiple sensor nodes in the system can form a variety of different topologies, the collected data can be sent to the user terminal through the GSM network, and the user can also control the remote sensor node through the GSM network. This paper first describes the automatic test problems, a constrained multi-objective problem, then the design of the genetic algorithm to improve the test paper and puts forward questions based on an encoding method and based on the difficulty and test points of F fitness function for dynamic adjustment of the parameters in the iterative process. Finally, it is verified by experiments that the test paper made by this method satisfies users' requests for questions, contents, and scores, and at the same time, it also improves the running efficiency of a random optimization algorithm by 7-17 times.

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Section: Establishment Of a Test Paper Modelmentioning

confidence: 99%

RETRACTED ARTICLE: Research on English teaching system based on artificial intelligence and WBIETS wireless network system

Tan

2020

J Wireless Com Network

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“…Since the frequency range of such motion artifacts coincides with that of the muscle contractions, misinterpretations of muscle activity is likely. However, with a simplified model of the electrode-skin impedances, we will show in this chapter that motion artifacts only cause unidirectional alterations of the bioimpedance phase and can thus be clearly distinguished from actual muscle activity with phase shifts according to (4) and (5). The electrical characteristics of the electrode-skin interfaces can be explained by the combination of the electrochemically caused half-cell voltages (V HC ) and frequency-dependent electrode-skin interface impedances (Z E ) [8], [23]- [25].Each of these electrode-skin impedances can be modeled with a combination of the three passive electric components R E , C E and R [8], [26].…”

Section: B Robustness Against Motion Artifactsmentioning

confidence: 95%

“…M USCLE contraction detection is widely used in several human-machine interaction applications and is not exclusively of interest for biomedical purposes [1]- [4]. However, many approaches strive to achieve active control of limb prostheses.…”

Section: Introductionmentioning

confidence: 99%

Multi-Frequency Impedance Myography: The PhaseX Effect

Kusche¹,

Ryschka²

2021

IEEE Sensors J.

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Muscle contraction is often detected via EMG in prosthetics. However, signal disturbances due to electrode motions can lead to misinterpretations. Therefore, alternative measurement approaches are desired to increase the reliability of the results. In this work, a novel approach based on impedance myography is proposed. By means of an equivalent circuit of a muscle, its electrical characteristics during contractions are analyzed. In this analysis, a new biomedical marker named the PhaseX Effect is described. This effect is based on the specific behavior of the phase response when the muscle is contracted and is interesting due to its high signal robustness and low signal processing requirements. The resilience of this effect against electrode motion is also analyzed. Measurements of the complex impedance myography spectra are performed on the forearms of three subjects during relaxation and contraction of the corresponding muscle. The subject measurements show the expected behavior of the muscle model. Actual muscle contractions can easily be detected via a simple analysis of the phase response. For a better visualization, the measurements are repeated while acquiring a synchronized video of the moving forearm. The particular effect of the phase response during muscle contraction can be used as a new marker that can be beneficial in several applications such as prostheses control. The PhaseX Effect has high reliability and low signal processing requirements, making it advantageous over other muscle activity markers. The combination of a reliable marker and simple signal analysis promises to become a new method for prostheses control.

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“…Based on traditional ladle, add a thermal insulation layer and a composite thermal insulation layer between permanent layer and ladle shell. [33][34][35] Taking the traditional ladle of a steel plant as the research object, without changing the overall thickness of the traditional ladle shell and permanent layer, only the thickness of working layer is reduced, and the reduced thickness is set as the thickness of the new structural insulation layer and composite insulation layer. 36 Figure 3 shows the structure of the designed ladle.…”

Section: Ladle Lining Structure Designmentioning

confidence: 99%

Numerical simulation of thermal insulation and longevity performance in new lightweight ladle

Sun

Tian

et al. 2020

Concurrency and Computation

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For meeting the comprehensive requirements of "super insulation," "lightweight," and "longevity" of the contemporary ladle, this article designs a new kind of lightweight ladle with heat preservation and longevity performance, and based on steady-state analysis method and numerical simulation technology, the comparison of temperature distribution between new lightweight and traditional ladle under typical operating modes is made and analyzed. The simulation results of temperature field prove that the performance of heat preservation in new kind of lightweight ladle has been improved obviously from the two aspects of ladle shell temperature and molten steel file rate. At the same time, the simulation results of stress field indicate that the stress of designed lightweight ladle reduced and distributed more evenly, which is conducive to prolonging the work time in-service of the ladle. Finally, based on the field test, the simulation is proved to be effective, and the designed ladle structure achieves the expected purpose.

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Intelligent human computer interaction based on non redundant EMG signal

Cited by 160 publications

References 42 publications

RETRACTED ARTICLE: Research on English teaching system based on artificial intelligence and WBIETS wireless network system

RETRACTED ARTICLE: Research on English teaching system based on artificial intelligence and WBIETS wireless network system

Multi-Frequency Impedance Myography: The PhaseX Effect

Numerical simulation of thermal insulation and longevity performance in new lightweight ladle

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