Electric power transmission and maintenance is essential for the industry. This paper proposes a method efficient extraction classification of three-dimensional (3D) targets electric facilities based on regularized grid characteristics computed from point cloud data acquired by unmanned aerial vehicles (UAVs). First, spatial hashing matrix was constructed to store after noise removal statistical method, which calculated local distribution points within each sparse grid. Secondly, lines were...

We propose and experimentally demonstrate a non-orthogonal multiple access (NOMA) visible light communication (VLC) system using non-Hermitian symmetry (NHS) inverse-fast-Fourier-transform (IFFT)/FFT size efficient (SE) orthogonal frequency division multiplexing (OFDM). Fix power allocation successive interference cancellation (SIC) algorithms are realized. The ratio between different users, transmission distance, network cell coverage investigated. proposed scheme is also compared with the...

TiO2 nanoarray (TNA) is usually used to improve the energy storage performance of polymer composite; however, owing paradox between polarization and breakdown strength, discharged density TNA-based composite always restricted. In this study, a novel bilayer with excellent has been designed fabricated by combining aligned TNA random nanowires (TO NWs) poly(vinylidene fluoride) (PVDF) matrix. Interestingly, superior 16.13 J/cm3 was obtained in (5 vol % TO NWs/TNA)–PVDF composite, which 2.0...

Tactile sensors are among the essential components for human–robot interaction in robotics. The force applied to robot hand is coupled with both normal (in <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">${z}$ </tex-math></inline-formula> -direction) and shear notation="LaTeX">${x}$ - notation="LaTeX">${y}$ -directions). Additionally, must withstand significant while grasping object. As a result, it crucial...

Tactile perception of the human hand plays a critical role in everyday object recognition. The development multimodal tactile sensors that can sense stimuli with high sensitivity and low cost is important for intelligent perception. In this article, sensor attached on mechanical studied, which consists magnetostrictive sensor, temperature flex sensor. By applying to robotic grasp objects, output voltage magnetotactictive tractile be used shape softness bending angle knuckles obtained by...

Purpose. To develop strategies allowing phosphenes from implanted cortical electrodes to be mapped in visual space. Accurate, individualized phosphene maps are essential derive the inverse needed present recognizable images prosthesis recipients. Methods. Flashing dots were presented normally-sighted observers 32–128 positions randomly chosen central 18 of one hemi-field. Gaze maintenance on a steady fixation point was monitored, and test blanked if gaze deviated by more than 0.5 . Three...

Tactile sensors are key devices in surface information perception for robots that can recognize the texture of fabrics with different materials and winding patterns unstructured environments, thus helping robot process more effectively. In this study, a magnetostrictive tactile sensor array was designed loaded onto robotic fingertips, output voltage waveform obtained by manipulating to slide contact fabrics. The diagram normalized build FTS-15 dataset. convolutional neural network ResNet-18...

The single-core cable is used in production logging to achieve data transmission between the surface and underground. However, for narrow band of cable, using traditional base-band modulation, transfer rate very difficult rise. Lower limits development underground equipments. This paper analyzes characteristics combined with actual situation logging, based on orthogonal frequency division multiplexing, we design high-speed system improve bandwidth efficiency, so it a kind ideal logging. can...

In view of the characteristics non-silicon flat micro parts in MEMS devices, such as small, light and thin, a vacuum adsorption microassembly system based on microvision was established. Through research key assembly technologies micro-gripper operation, moving control vision positioning, general scheme automatic for is put forward, which combination teaching playback microscopic visual feedback. Furthermore, some are especially studied, method, target part recognition, position compensation...

In order to simulate the effects of lightning and switching transients on power lines, coupling decoupling network (CDN) is necessary for performing surge tests electrical electronic equipment. This paper presents a particular analysis circuit CDN design details according requirement standard IEC 61000-4-5. The circuits are simulated by electromagnetic program (EMTP) judge suitability selected component values performance designed CDN. Simulation results also show that increasing capacitance...

In this paper, based on the equivalent circuit diagram of leaky cable, impedance and admittance cable are calculated, mathematical model is established. influence external mode coupling, weak coupling coefficient defined, transmission attenuation obtained. The relation between frequency obtained by simulation, show that increases with frequency. Through experiment consistency measured value

Purpose: To allow frequent and calibrated vision testing of clinical trial subjects between periodic clinic visits. Methods: 14 PC-based measures were collected, including: “ETDRS” visual acuity, “Pelli-Robson” contrast sensitivity, central field isoptersS at 3 light levels (full, 4%, 0.1% luminance); low acuityS; glare-impaired sensitivity; macular pigment densityS; 48-hue discriminationS; primary color half-saturation setting. All letter tests converged towards threshold using 2...

In view of the assembly process characteristic non-silicon flat micro parts in MEMS devices, a control system is developed based on an established experimental platform. According to characteristics parts, recognition and positioning method studied, new matching algorithm shape template proposed, then identification module has been developed. Firstly, by acquiring image target, edge information target can be acquired after filtering, binarization, denoising sub-pixel detection. Secondly,...

Aiming at crosstalk problem of communication cable in train network control, mechanism generation is analyzed based on multi-conductor transmission lines (MTL) theory, and calculation method distributed parameter shielding homogeneous dielectric given. Frequency domain generalized two-port used. solution the coupling response terminal derived by solving shielded twisted pair (STP) chain-parameter matrix. Finally, influence factors simulated. The results show that inversely proportional to...

It is well known that there much electromagnetic interference on the gases insulated switchgear (GIS) operation environment, and which would bring some difficulties to distinguish actual partial discharge signals with those interference. In this paper, three kinds of measures are introduced in detail, have been proved be effective realize anti-interference for GIS detection field. The first one aluminum foil coated shielding, second acoustic-electric joint measuring, could verify each other,...