检索结果-内蒙古大学图书馆

Hybrid electromechanical properties of hetero-doped and homogeneously bonded dual-mode pressure sensor for indoor body area network node

引用

Science China(Information Sciences) 2024年第1期67卷 240-253页

作者： Junbin YU Shuai XIAN Jinbiao MU Min WANG Yin WANG Xiaojuan HOU Le ZHANG Jian HE Jiliang MU Xiujian CHOU Science and Technology on Electronic Test and Measurement Laboratory North University of China Sichuan Aerospace Fenghuo Servo Control Technology Corporation

Pressure sensors are considerably important for continuous monitoring of human movement and the surrounding environment to construct a caregiving system for the elderly living *** challenge for pressure sensors that still remains is combining self-driven,comfort,and ***,an all-in-one conformal pressure sensor(ACPS) based on a homogeneous integrated triboelectric-piezoelectric hybrid sensor is *** ACPS has dual-mode sensing properties due to coupling triboelectrification and piezoelectric effect ensuring a stable response to various external ***-coated glass microspheres and polyacrylonitrile were uniformly filleted into the silicone rubber substrate using a hetero-doping method to create a stretchable electrode layer with flexible conformal characteristics and a piezoelectric layer with excellent piezoelectric properties,***,the triboelectric layer was fabricated using the same silicone rubber,allowing ACPS to be homogeneously bonded into an all-in-one structure with reliable *** allowed various functional layers to have outstanding interface characteristics and thus improve the electrical transmission *** developed ACPS had outstanding sensitivity(1.04 V/10～4Pa),high linearity(about 0.984),a wide measurement range(10–700 k Pa),and can accurately and continuously distinguish multiple ***,using a homemade signal processing circuit,ACPSs can be deployed in the human body and the room as indoor body area network *** successfully applied to the remote tracking of daily dynamic home life and the remote operation of small electrical equipment,these ACPSs can achieve real-time caregiving for the elderly living *** an application area desperately needed by society,this study envisions a caregiving system for the elderly living alone without violating personal privacy.

关键词： dual-mode pressure sensor homogeneous bonding all-in-one structure indoor body area network node elderly caregiving microsystem

来源：评论

学校读者我要写书评

暂无评论

Research on the cascade modulation method for star position simulation in a weak starlight simulator

引用

Optics Express 2025年第3期33卷 5627-5639页

作者： Wu, Linghao Zhang, Yu Li, Yihuan Sheng, Lan Xia, Yuxin Zhang, Siqi Gu, Siwen Department of Measurement and Control Technology and Instrumentation Changzhou Institute of Technology Changzhou213032 China Changchun University of Science and Technology Changchun130022 China

In order to surmount the challenge wherein the gray-scale resolution of liquid crystal on silicon (LCOS) imaging within a faint starlight simulator acts as a limiting factor for the precision of stellar position correction, this paper introduces a design approach for a cascaded architecture tailored to faint starlight simulators. Through the implementation of an isometric mapping technique that maps the dimming LCOS onto the surface of the imaging LCOS, the dimensionality of gray-scale adjustment for the imaging LCOS is augmented, thereby enhancing the accuracy of simulated stellar position correction. Initially, a stellar position cascaded modulation architecture is meticulously constructed to investigate the pivotal factors that impact the gray-scale resolution of the imaging LCOS within the framework of the cascaded modulation architecture. Subsequently, the optimization protocol for the concentrator system embedded within the cascaded modulation architecture is formulated. Leveraging the simulated annealing algorithm, the multi-parameter freeform surface of the concentrator system undergoes synchronous optimization. Finally, the simulation outcomes derived from the cascaded modulation architecture both prior to and subsequent to optimization clearly demonstrate that upon the implementation of the novel architecture, the accuracy of simulated stellar position correction experiences a notable enhancement of 62%. © 2025 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.

关键词： Liquid crystals

来源：评论

学校读者我要写书评

暂无评论

Simulation Design of Class IV Flextensional Transducer 3

Simulation Design of Class IV Flextensional Transducer

引用

3rd International Symposium on Sensor technology and control, ISSTC 2024

作者： Wang, Ying Gao, Sibo Wu, Di Zhang, Qiang Dalian Institute of Measurement and Control Technology Liaoning Dalian China

ISBN: (纸本)9798331541637

Class IV flextensional transducers are often used in underwater acoustic equipment due to their low-frequency and high-power characteristics. This paper uses COMSOL finite element software to simulate and optimize the electro-acoustic performance of class IV flextensional transducer, and conducts simulation analysis on the pre-stressed shell, which has guiding significance for the production and assembly of transducers. © 2024 IEEE.

关键词： Underwater acoustics

来源：评论

学校读者我要写书评

暂无评论

A modified OMP method for multi-orbit three dimensional ISAR imaging of the space target

引用

Journal of Systems Engineering and Electronics 2023年第4期34卷 879-893页

作者： JIANG Libing ZHENG Shuyu YANG Qingwei YANG Peng WANG Zhuang Science and Technology on Automatic Target Recognition National University of Defense TechnologyChangsha410073China Xi’an Satellite Measurement and Control Center Xi’an 710600China

The conventional two dimensional(2D)inverse synthetic aperture radar(ISAR)imaging fails to provide the targets'three dimensional(3D)*** this paper,a 3D ISAR imaging method for the space target is proposed based on mutliorbit observation data and an improved orthogonal matching pursuit(OMP)***,the 3D scattered field data is converted into a set of 2D matrix by stacking slices of the 3D data along the elevation direction ***,an improved OMP algorithm is applied to recover the space target's amplitude information via the 2D matrix ***,scattering centers can be reconstructed with specific three dimensional *** simulations are provided to demonstrate the effectiveness and superiority of the proposed 3D imaging method.

关键词： three dimensional inverse synthetic aperture radar(3D ISAR)imaging space target improved orthogonal matching pursuit(OMP)algorithm scattering centers

来源：评论

学校读者我要写书评

暂无评论

Three-Dimensional Gravity Minimum Support Regularization Inversion Combined with Prior Image Information 20

Three-Dimensional Gravity Minimum Support Regularization Inv...

引用

20th International Conference on Natural Computation, Fuzzy Systems and Knowledge Discovery, ICNC-FSKD 2024

作者： Yan, Wen Qiang Chen, Xiao Wang, JinFeng Zhao, Fei Yu School of Geophysics and Measurement-Control Technology East China University of Technology Nanchang China

ISBN: (纸本)9798350356328

In a geophysical inversion, forms of prior information are various. However, it is not easy to obtain prior lithologic or structural information. In order to integrate image information into the geophysical inversion, this paper takes the 3D gravity regularization inversion as an example, integrates prior image information into a minimum support stabilizer, and proposes a new stabilizer. Then, single-block and double-block model tests are designed and implemented. Compared with the result using the minimum support stabilizer, the result of using the new stabilizer can better restores the lithologic and structural distribution of underground anomaly. Besides, the resolution of the gravity method is improved. It can be concluded that the new stabilizer is suitable for 3D gravity inversion, providing a new idea for the integration of prior information in geophysical inversion. © 2024 IEEE.

关键词： Lithology

来源：评论

学校读者我要写书评

暂无评论

Effect of applied electric fields on supralinear dendritic integration of interneuron

引用

Chinese Physics B 2024年第2期33卷 84-95页

作者：樊亚琴魏熙乐卢梅丽伊国胜 Tianjin Key Laboratory of Process Measurement and Control School of Electrical and Information EngineeringTianjin UniversityTianjin 300072China School of Information Technology Engineering Tianjin University of Technology and EducationTianjin 300222China

Evidences show that electric fields(EFs)induced by the magnetic stimulation could modulates brain activities by regulating the excitability of GABAergic ***,it is still unclear how and why the EF-induced polarization affects the interneuron response as the interneuron receives NMDA synaptic *** the key role of NMDA receptor-mediated supralinear dendritic integration in neuronal computations,we suppose that the applied EFs could functionally modulate interneurons’response via regulating dendritic *** first,we build a simplified multi-dendritic circuit model with inhomogeneous extracellular potentials,which characterizes the relationship among EF-induced spatial polarizations,dendritic integration,and somatic *** performing model-based singular perturbation analysis,it is found that the equilibrium point of fast subsystem can be used to asymptotically depict the subthreshold input–output(sI/O)relationship of dendritic *** predicted that EF-induced strong depolarizations on the distal dendrites reduce the dendritic saturation output by reducing driving force of synaptic input,and it shifts the steep change of sI/O curve left by reducing stimulation threshold of triggering NMDA ***,the EF modulation prefers the global dendritic integration with asymmetric scatter distribution of NMDA ***,we identify the respective contribution of EF-regulated dendritic integration and EF-induced somatic polarization to an action potential generation and find that they have an antagonistic effect on AP generation due to the varied NMDA spike threshold under EF stimulation.

关键词： GABAergic interneuron electrical field supralinear dendritic integration action potential generation

来源：评论

学校读者我要写书评

暂无评论

A tactile sensor based on photoelasticity

引用

International Journal of Wireless and Mobile Computing 2024年第3期27卷 281-289页

作者： Tao, Bo Huang, Zhili Zhu, Wenqiong Li, Gongfa Key Laboratory of Metallurgical Equipment and Control Technology Ministry of Education Wuhan University of Science and Technology Hubei Wuhan China Research Centre for Biomimetic Robot and Intelligent Measurement and Control Wuhan University of Science and Technology Hubei Wuhan China

In the new industrial revolution, the market demands integrated talents in new engineering fields. To meet the requirements of the new era for cultivating high-level talents in integrated disciplines, this paper takes the photoelastic tactile sensor as a carrier, developing a task-driven teaching method oriented to student achievement. Combining society’s need with professional knowledge learning and innovation ability cultivation of students, a practical and innovative platform is built to meet the needs of different stages of integrated graduate education for bachelor’s and master’s degrees. Achieving simultaneous enhancement of learning, scientific research and innovation capabilities, it proposes a multi-dimensional assessment mechanism for integrated graduate education, involving long-term assessment of students at different stages and levels. It implements a strict entry and exit policy and comprehensively improves the quality of talent cultivation. The results show very obvious effects, significantly improving the quality of graduates and promoting student development. Copyright © 2024 Inderscience Enterprises Ltd.

关键词： Tactile sensors

来源：评论

学校读者我要写书评

暂无评论

Electromagnetic composite field analysis of underwater sound source based on fast Fourier transform

Electromagnetic composite field analysis of underwater sound...

引用

2024 International Conference on Electrical technology and Automation Engineering, ETAE 2024

作者： Gao, Sibo Wang, Ying Zhang, Qiang Sun, Zhigang Tang, Pishi Wu, Di Dalian Institute of Measurement and Control Technology The Fifth Laboratory Dalian China

This article demonstrates the complete transient analysis of speaker drivers, supporting the modeling of nonlinear effects. The simulation analysis includes the nonlinear characteristics of soft iron in the magnetic system, geometric nonlinearity in the structure, and the nonlinear effects caused by topological changes when the voice coil enters and exits the magnetic gap. By constructing the model, dividing the mesh, simulating the magnetic field in and around the voice coil gap, calculating the distribution of sound pressure level and the relationship between the dynamic force factor and the relative position of the voice coil, the spectrum analysis of the output signal was completed based on the fast Fourier transform. © Published under licence by IOP Publishing Ltd.

关键词： Fast Fourier transforms

来源：评论

学校读者我要写书评

暂无评论

Terahertz quasi-perfect vortex beam with integer-order and fractional-order generated by spiral spherical harmonic axicon

引用

Chinese Physics B 2024年第1期33卷 458-467页

作者：涂思语刘德峰刘劲松杨振刚王可嘉 Wuhan National Laboratory for Optoelectronics School of Optical and Electronic InformationHuazhong University of Science and TechnologyWuhan 430074China AVIC Beijing Changcheng Aeronautical Measurement and Control Technology Research Institute Beijing 101111China

We propose a new method to generate terahertz perfect vortex beam with integer-order and fractional-order. A new optical diffractive element composed of the phase combination of a spherical harmonic axicon and a spiral phase plate is designed and called spiral spherical harmonic axicon. A terahertz Gaussian beam passes through the spiral spherical harmonic axicon to generate a terahertz vortex beam. When only the topological charge number carried by spiral spherical harmonic axicon increases, the ring radius of terahertz vortex beam increases slightly, so the beam is shaped into a terahertz quasi-perfect vortex beam. Importantly, the terahertz quasi-perfect vortex beam can carry not only integer-order topological charge number but also fractional-order topological charge number. This is the first time that vortex beam and quasi-perfect vortex beam with fractional-order have been successfully realized in terahertz domain and experiment.

关键词： terahertz spiral spherical harmonic axicon quasi-perfect vortex beam topological charge number

来源：评论

学校读者我要写书评

暂无评论

Breeze-activated wind speed sensor with ultra-low friction resistance for self-powered gale disaster warning

引用

Science China(Technological Sciences) 2023年第1期66卷 57-70页

作者： HE HuiCheng MU JiLiang MU JinBiao FENG ChengPeng ZHAO JuanHong WANG Yin ZHOU Hao ZHANG Le HE Jian CHOU XiuJian Science and Technology on Electronic Test and Measurement Laboratory North University of ChinaTaiyuan 030051China Sichuan Aerospace Fenghuo Servo Control Technology Corporation Chengdu 610000China

The early warning and monitoring of gale disasters are very important for the safety of people’s lives and properties. Triboelectric nanogenerators(TENGs) are popular for wind speed sensors due to their self-powered property. However, a TENG cannot easily work at low wind speeds due to the limitation of the high frictional resistance structure. In this paper, a TENG-based breezeactivated wind speed sensor(BAWS) with an ultra-low frictional resistance is proposed. The key drive unit of the BAWS is a Savonius-like vertical axis wind turbine, which is fabricated by arrayed airfoil profile blades with excellent flow field characteristics. Here a wind turbine plays dual roles in driving the electromagnetic generator below it to supply energy and lead the TENG above it to sense the wind force. Compared to a classical turbine with a wind cup, the designed turbine has a low resistance torque. The synergistic effect of the drive unit with low-resistance and triboelectric materials with low viscosity allows the BAWS to be activated even at a wind speed of 2.9 m/s. The sensitivities of the voltage frequency and current amplitude of the TENG are used to reflect the electrical property of the BAWS. The measured values are 0.291 Hz/(m·s-1) and 0.221 μA/(m·s-1),which reflects the good sensitivity of the BAWS. Moreover, the linearity of the BAWS reaches up to 0.991, which shows an accurate output for the wind speed. In addition, the device is equipped with a combined electromagnetic-solar unit as the sole power source to meet the sensor’s all-weather operation requirements. This work expands the application prospects of selfpowered sensing technology in the field of disaster warning.

关键词： gale disaster warning triboelectric nanogenerator wind speed sensor Savonius-like vertical axis wind turbine self-powered wireless sensing

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：