141 results about "Electrode location" patented technology

The invention provides a lithium battery internal short circuit fault early warning and positioning method and system based on deep learning. The early warning and positioning method comprises the following steps: step S10, multi-dimensional data semantic acquisition and working condition self-adaptive preprocessing; step S20, collaborative extraction and alignment of cross-scale spatio-temporal features; step S30, performing dynamic threshold adaptive internal short circuit early warning and feedback optimization; s40, fault accurate positioning and verification of topology perception are carried out; and step S50, performing embedded collaborative optimization and self-diagnosis deployment. According to the invention, early weak signals of an internal short circuit fault can be found in time, and the efficiency and timeliness of battery safety monitoring are improved; the sensitivity of early warning is improved; the robustness in high-temperature, low-temperature and rapid charging and discharging environments is enhanced; and the positions of the single battery and the electrode with the fault can be accurately identified.

The invention discloses a motion posture recognition detection method based on transfer learning, belongs to the field of biomedical signal processing and machine learning, and aims at improving the robustness of a model under the condition of electrode position change by constructing an adversarial training mechanism and aligning data distribution before and after electrode offset in a feature space. The problem of data distortion caused by electrode displacement in the electrical impedance tomography EIT technology is solved, and the accuracy of posture recognition is improved.

The invention relates to the technical field of intelligent medical assistance, in particular to a skin disease treatment electrode positioning system based on potential distribution. The system comprises a potential gradient severe region identification module, a lesion minimum surrounding region identification module, a similar potential region grouping module, an optimal electrode position prediction module, an electric field distribution calculation module, a sweat gland dense region identification module, an optimal electrode placement point screening module, an enhanced feature generation module and a final electrode position determination module. By fusing multi-source information such as skin surface potential distribution, lesion geometric characteristics, tissue conductivity, historical treatment data and the like, systematic optimization is performed on electrode positioning in skin disease treatment, the effectiveness of electrode stimulation is maximized on the premise of ensuring the treatment safety, and the treatment efficiency is improved. An accurate electrode placement scheme is provided for treatment of different types of skin diseases, and the method is suitable for accurate determination of the electrode placement position in electrical stimulation treatment.

The invention discloses a refuse landfill geomembrane leakage detection method and system, and relates to the technical field of leakage detection.The method comprises the steps that a plurality of electrodes are arranged on the basis of the upper portion and the lower portion of a refuse landfill geomembrane, and a membrane upper electrode array and a membrane lower electrode array are constructed; constructing a detection electric field to obtain multiple groups of induction signal data; setting a reference signal, and identifying an abnormal sensing signal according to an analysis result; and mapping the abnormal sensing signal to the under-membrane electrode array according to abnormal data characteristics for positioning, determining electrode position information, and obtaining a leakage detection result. The technical problems that in the prior art, the positioning precision of the leakage point of the geomembrane of the refuse landfill is low, the leakage scale is difficult to evaluate, and the anti-seepage performance is not monitored in time are solved, and the technical effects that accurate positioning and scale evaluation of the leakage point of the geomembrane of the refuse landfill are achieved, and effective monitoring of the anti-seepage performance of the geomembrane is guaranteed are achieved.

The invention provides an emotion recognition method, device and equipment based on electroencephalogram signals and a medium. The emotion recognition method based on the electroencephalogram signals comprises the steps that original electroencephalogram signals under all electrode positions are obtained; electroencephalogram characteristic data are extracted according to the original electroencephalogram signals; extracting frequency band and spatial features from the electroencephalogram feature data to obtain a space-frequency feature map; a bidirectional Mama network is adopted to extract time sequence characteristics of the space-frequency characteristic pattern in each time period, and a time sequence characteristic sequence is obtained; fusing each time sequence feature in the time sequence feature sequence on a time period dimension to obtain a fused time sequence feature; and recognizing the fusion time sequence features by using a feedforward neural network to obtain an emotion recognition result. According to the emotion recognition method and device based on the electroencephalogram signals, the equipment and the medium, deep feature fusion can be achieved, hidden features related to emotion changes in the electroencephalogram can be fully mined, and the accuracy of emotion recognition is improved.

The ablation forceps comprise a forceps holder assembly, an ablation assembly and an electrical connection assembly, the forceps holder assembly comprises a far-end forceps holder and a near-end forceps holder, and the far-end forceps holder and the near-end forceps holder can be close to each other or away from each other. The ablation assembly comprises a far-end electrode set installed on the far-end forceps holder, a near-end electrode set installed on the near-end forceps holder and electrode marks arranged on the surface of the near-end forceps holder, the far-end electrode set and the near-end electrode set respectively comprise at least one electrode, and each electrode on the near-end forceps holder corresponds to one electrode mark. Electrode positions corresponding to the electrode marks are judged through the electrode marks, the electrodes on the forceps holder assembly are connected with the electrical connection assembly through wires, and the electrical connection assembly is connected with the ablation instrument. An operator can master the positions of the ablation electrodes during treatment, the positions of the ablation forceps are adjusted or ablation areas are arranged according to the positions and the attaching conditions of the electrodes, the safety and effectiveness of an operation are improved, the ablation effect is better, and the operation duration is shorter.

A transducer device for delivering a tumor treatment field to a subject's body, the transducer device comprising: an electrode array configured to be positioned over the subject's body with a front face of the array facing the subject's body, the array comprising electrode elements positioned in existing electrode locations arranged about a centroid of the array; a layer of anisotropic material electrically coupled to the electrode array and located on an anterior side of the front face of the array; and at least one void space in the electrode array capable of enclosing at least a portion of an area footprint equivalent to an area footprint of the at least one existing electrode location and capable of being superimposed on at least a portion of the at least one existing electrode location by rotating the array about the centroid.

The invention provides a hardware multi-point welding control method and device based on machine vision and a medium. The hardware multi-point welding control method comprises the steps that original welding images, with a welding time sequence, of multiple welding point positions of hardware are obtained, and the original welding images are locally and globally amplified under multiple different amplification factors; obtaining a local detail image and a global position image with welding time sequence marks; associating the local detail image with the global position image through a multi-scale feature fusion algorithm according to the welding time sequence mark to obtain molten pool morphological features and electrode position features; establishing a dynamic mapping relation between the molten pool morphological characteristics and the electrode position characteristics in a time sequence dimension to generate a welding state evaluation result; constructing a welding parameter adjustment decision tree according to a welding state evaluation result, and determining welding parameter adjustment requirements and adjustment directions of the welding point locations according to defect risk levels and characteristic deviation modes; and a current adjusting instruction is generated based on the welding parameter adjusting requirement and the adjusting direction, and welding adjusting operation is executed according to the current adjusting instruction.

1. A transducer device for delivering a tumor treatment field to a body of a subject, the transducer device comprising: an array of electrodes configured to be placed on a body of a subject with a front surface of the array facing the body of the subject, the array including electrode elements positioned at existing electrode locations positioned about a center of gravity of the array; an anisotropic material layer electrically coupled to the array of electrodes and positioned in front of the front surface of the array; and at least one void space within the array of electrodes capable of encompassing an areal footprint equal to at least a portion of the areal footprint of at least one existing electrode location and superimposable onto at least a portion of at least one existing electrode location by rotation of the array about the center of gravity.

The present application relates to a kind of silicon carbide power devices of floating junction thickness gradually changes, comprising: N+ silicon carbide substrate layer;N- silicon carbide epitaxial layer is located on N+ silicon carbide substrate layer;A layer P-type silicon carbide floating junction layer is arranged in the N- silicon carbide epitaxial layer in vertical direction, each P-type silicon carbide floating junction layer includes B P-type silicon carbide floating junction structure, P-type silicon carbide floating junction structure is symmetrical along central axis and is the structure of thickness gradually changes;Back electrode is located in the lower surface of N+ silicon carbide substrate layer;Front electrode is located on N- silicon carbide epitaxial layer.The present application makes the thickness of floating junction gradually increase from the center of floating junction to the edge of floating junction, thereby reducing the electric field peak value of corresponding electrode position higher at the center of floating junction when device is in reverse working state, while the epitaxial layer drift region between floating junction is more sufficient, makes the electric field peak value of floating junction interval center and edge position be lifted.

According to an aspect of the present inventive concept there is provided a system for determining an estimate of an anatomy of neural tissue of a subject. The system comprises an electrode arrangement comprising a plurality of electrodes, wherein different electrodes in the plurality of electrodes are configured to be arranged in different electrode locations adjacent the neural tissue, wherein the plurality of electrodes is configured to receive a plurality of stimulation signals, a sensor arrangement configured to generate indications of changes in at least one of a neural activity or a physiological activity in response to the stimulation signals and a processing unit, configured to receive data representing relations between the plurality of stimulation signals and the indications of changes in the neural activity or physiological activity, wherein the processing unit is configured to generate the estimate of the anatomy of the neural tissue of the subject.

A method includes, based on respective signals acquired by a plurality of electrodes on an anatomical surface of a heart, computing respective local activation times (LATs) at respective locations of the electrodes. The method further includes, based on the LATs, computing respective directions of electrical propagation at the locations. The method further includes selecting pairs of adjacent ones of the electrodes such that, for each of the pairs, a vector joining the pair is aligned, to within a predefined threshold degree of alignment, with the direction of electrical propagation at the location of one of the electrodes belonging to the pair. The method further includes associating respective bipolar voltages measured by the pairs of electrodes with a digital model of the anatomical surface. Other examples are also described.

A method includes, based on respective signals acquired by a plurality of electrodes on an anatomical surface of a heart, computing respective local activation times (LATs) at respective locations of the electrodes. The method further includes, based on the LATs, computing respective directions of electrical propagation at the locations. The method further includes selecting pairs of adjacent ones of the electrodes such that, for each of the pairs, a vector joining the pair is aligned, to within a predefined threshold degree of alignment, with the direction of electrical propagation at the location of one of the electrodes belonging to the pair. The method further includes associating respective bipolar voltages measured by the pairs of electrodes with a digital model of the anatomical surface. Other examples are also described.

A probe card and a method for inspecting a light emitting element are disclosed. In one aspect, the probe card includes a probe substrate, a plurality of piezoelectric elements disposed on one surface of the probe substrate, and a plurality of electrode units disposed on the plurality of piezoelectric elements. Each electrode unit includes a plurality of pin electrodes, and each piezoelectric element of the plurality of piezoelectric elements corresponds one to one with each pin electrode of the plurality of pin electrodes. By applying a voltage to each piezoelectric element, its shape can be deformed to change the Z axis position of the corresponding pin electrode. This allows the probe card to adjust the height of individual pin electrodes for contacting electrodes of light emitting elements on a wafer, enabling accurate electrical inspection even when wafer flatness or electrode positions vary.

The invention discloses an intelligent multi-channel glow discharge device, which is characterized in that a positive electrode discharge unit and a negative electrode discharge unit have high integration degree and high safety degree through a multi-layer integrated design, and the distance between electrodes can be accurately regulated and controlled through an accurate electrode position detection and control unit. The flow of each channel and the size of liquid drops can be in an optimal state through independent monitoring and independent control of fluid of multiple channels, and the whole glow discharge process is efficient, intelligent, accurate, safe and controllable through an innovative multi-channel cooperative feedback control technology, an intelligent self-adaptive adjustment algorithm and an integrated safety protection system in the aspect of control. The method is particularly suitable for the fields of catalyst preparation and the like, and can effectively reduce the risk of manual operation while remarkably improving the production and preparation efficiency and the quality consistency of the catalyst.

A method includes applying pacing to ventricle of heart of patient from multiple electrode locations over circumference of multi-electrode catheter area. Cardiac signals are received in response to the pacing. A correlation algorithm is applied to the received signals to calculate a plurality of correlations among the received signals. Based on calculated correlations, the area is checked if it includes an arrhythmogenic location identified with predefined sufficient spatial resolution. If the resolution is insufficient, sub-area to pace is defined. Subsequent pacing is applied to ventricle from multiple electrode locations over a circumference of the sub-area. Subsequent cardiac signals are received in response to the subsequent pacing. Subsequent correlations among the subsequent received signals are calculated. Based on the subsequent correlations, it is ascertained whether the arrhythmogenic location is found in the sub-area. If an arrhythmogenic location is found with sufficient spatial resolution, the identified arrhythmogenic location is indicated to user.

A method, system, device, and medium for EEG emotion recognition based on mutual information attention of adjacent channels are disclosed. The method includes: acquiring EEG data; preprocessing the EEG data; mapping the EEG data into a channel matrix to obtain channel position information and channel data vectors; calculating the average mutual information between each channel data vector and its adjacent channel data vectors; using the average mutual information as the attention weight for that channel data vector; and feeding the EEG data with the attention weight into a CapsNet to complete EEG emotion recognition. The system, device, and medium are used to implement an EEG emotion recognition method based on mutual information attention of adjacent channels. This invention can reduce the influence of noise information caused by electrode placement deviations and improve the accuracy of emotion recognition.

The application discloses a manufacturing method of a lightable Micro OLED pilot sheet, and is characterized in that: step 1, a metal layer M1 and an insulating layer P1 are deposited; step 2, metal wiring is manufactured; step 3, an insulating layer P2 is manufactured; step 4, the insulating layer P2 is thinned; step 5, the insulating layer P2 and the insulating layer P1 are thinned until the metal layer M1 is exposed; step 6, an insulating layer P3 is manufactured; step 7, a hole is punched to expose the metal layer M1; step 8, a metal layer M2 and an insulating layer P4 are generated; and step 9, steps 2-7 are repeated to complete pilot sheet bottom layer circuit manufacturing, and the hole positions are respectively corresponding to pixel electrode positions, and a subsequent Anode deposition can smooth the step difference of the via hole position section. The pilot sheet and the manufacturing method thereof introduce an insulating layer filling metal gap scheme, so that the pilot sheet can be manufactured based on panel factory equipment, the cost of the pilot sheet is reduced, different pixel switching is met, and a complete pilot sheet evaluation function is realized.

The application relates to the technical field of semiconductors, and provides a preparation method of a three-dimensional electrode, which comprises the following steps: manufacturing a wafer mask plate, wherein the wafer mask plate is provided with a plurality of first hollow patterns, the shape of each first hollow pattern is matched with the cross-sectional shape of the electrode, and the position of each first hollow pattern is the same as the target position of the electrode on a film-to-be-coated wafer; temporarily bonding the wafer mask plate with the surface of the film-to-be-coated wafer; and evaporating the electrode at the position opposite to the first hollow pattern on the film-to-be-coated wafer. The preparation method of the three-dimensional electrode provided by the application realizes the submicron-level accurate layout of the electrode on the film-to-be-coated wafer by manufacturing the wafer mask plate and temporarily bonding the wafer mask plate with the surface of the film-to-be-coated wafer, so that there is no gap between the wafer mask plate and the film-to-be-coated wafer and the wafer mask plate cannot move relative to the film-to-be-coated wafer, the gap between the evaporated electrode position and the target position is reduced, and the accuracy of preparing the three-dimensional electrode on the film-to-be-coated wafer is improved.

Device for analyzing the positioning of an electrode in an electrode array of an electrophysiological data acquisition unit, comprising a processing unit. The processing unit is configured to control an electric field source at a target position to generate a target signal, to use a positioning-dependent electrode signal from the electrode for comparison in order to determine a deviation between a reference signal based on the electrode signal and the target signal; and to output a signal based on the deviation.

This invention relates to the field of lead-zinc ore detection equipment, and more particularly to an induced polarization (IP) sounding device for detecting lead-zinc ore. The technical solution includes: a base composed of a vertical base plate and a horizontal base plate that can be rotated and folded together; a clamping and insertion mechanism for clamping electrodes and inserting them into the ground; an electrode spacing adjustment mechanism connected to the vertical base plate and the clamping and insertion mechanism for adjusting the distance between the clamping and insertion mechanisms; and a graduated scale connected to the vertical base plate for indicating the displacement values ​​of the clamping and insertion mechanisms. This invention utilizes the clamping and insertion mechanism to clamp and fix electrodes and insert them into the ground, and the electrode spacing adjustment mechanism to translate the positions of each clamping and insertion mechanism to precisely adjust the distance between the electrodes. The graduated scale allows for visual observation of the specific positions. This precise adjustment of the electrode positions not only improves the accuracy of the detection data but also increases the detection efficiency.

A method for fabricating a lateral photoelectrochemical solar-blind ultraviolet photodetector belongs to the field of detector fabrication technology. The method involves: covering a portion of a conductive substrate with a mask, and fabricating a photosensitive material on the uncovered portion; removing the mask, fabricating a counter electrode on the exposed portion of the conductive substrate, and drilling a hole at the counter electrode location to penetrate the electrode and substrate for electrolyte injection; preparing a high-transparency quartz sheet, and bonding the high-transparency quartz sheet to the above structure using a 50-60 μm thick sarin membrane; subsequently injecting electrolyte through the hole on the counter electrode, and then sealing the hole to form a lateral PEC-type photodetector. In this invention, the PEC photodetector has the photoanode and counter electrode on the same side, i.e., arranged laterally, with the light-incident surface being high-transparency quartz. Compared to detectors using FTO as electrodes, it can achieve a solar-blind ultraviolet detector. Compared to the inverted structure with platinum as the counter electrode on quartz, it has a larger incident surface, higher light absorption efficiency, and higher detection efficiency.

The utility model relates to the technical field of crucible founding, and discloses crucible founding equipment with double visual detection devices, which comprises a processing table, a connecting frame is fixedly arranged on the top surface of the processing table, a crucible main body is arranged above the connecting frame, an electrode tube is arranged above the crucible main body, the electrode tube is arranged on the bottom surface of the connecting frame, and the double visual detection devices are arranged on the bottom surface of the connecting frame. A detection mechanism is arranged on the right side of the crucible main body, an adjusting mechanism is arranged in the detection mechanism, and the detection mechanism comprises a detection part and a rotating part. Deflection of the adjusting rod and the detection heads can be achieved through control of the servo motor, so that capturing of the lifting condition of the electrode is guaranteed, the two detection heads arranged up and down can monitor the lifting condition of the electrode in the crucible melting process in real time, data are fed back to a control system of a center console, and the detection accuracy is improved. The control system automatically adjusts relevant parameters such as the electrode position and the heating power according to the detection result so as to achieve uniform control over the temperature field of the transparent quartz crucible.

The invention discloses a light-emitting device. The light-emitting device comprises a substrate and more than one light-emitting chip arranged on the substrate, the substrate comprises more than two metal parts and a plastic package layer, the metal parts are accommodated in the plastic package layer, the top of each metal part is provided with a top surface electrode, the bottom surface of each metal part is provided with a bottom surface electrode, and each top surface electrode is provided with a metal boss; the top surface electrode is completely accommodated in the plastic packaging layer, and the top surface of the metal boss is exposed out of the plastic packaging layer to form a chip die bonding area of the substrate. The current-carrying capacity of the light-emitting device is improved by adopting the substrate, and the metal boss is arranged at the position of the top surface electrode, so that the size of a chip die bonding area is reduced, the area of an oxidized black area is reduced, the influence of the black area on the light-emitting brightness of the light-emitting chip is reduced, and the light-emitting efficiency of the light-emitting device is improved.

This invention discloses a method for noise reduction and electrode placement optimization in a single-arm electrocardiogram (ECG) system, comprising the following steps: Step S1: Acquiring electromyographic (EMG) signals at multiple preset electrode positions on the upper arm of the subject, and obtaining EMG signal intensity data and EMG signal stability data for each electrode position; Step S2: Determining one or more electrode positions with lower EMG signal intensity and better signal stability from the multiple preset electrode positions, and using the one or more electrode positions as the initial electrode arrangement; Step S3: Acquiring the subject's motion state data in real time while the subject is in motion; Step S4: Dynamically selecting electrode channels with fewer EMG signals in the current motion state from the initial electrode arrangement for ECG signal acquisition. This invention can reduce the introduction of EMG signals at the source, ensuring high-quality and stable ECG signals can be obtained in different individuals and under various motion states.

A foldable position detection sensor operable by electromagnetic induction coupling is configured to alleviate the problem of the levels of electromagnetic coupling with an electronic pen locally changing at a bending portion of the sensor. The position detection sensor includes a digitizer that includes an electrode configured to couple with a position indicator by electromagnetic induction coupling. The position detection sensor includes multiple electromagnetic sheets disposed to cover a surface of the digitizer opposite to an input surface thereof for receiving input form the position indicator. The multiple electromagnetic sheets are spaced apart from one another along the surface of the digitizer at a bending location where the digitizer is bent. The electromagnetic sheets are configured such that when the digitizer is in an unfolded state the electromagnetic sheets overlap with one another at the bending location in a direction perpendicular to the input surface of the digitizer.

The application discloses a kind of micro electrochemical in-situ testing methods, first, the clamp of in-situ tensile device is fixed to the both ends of sample, and in-situ tensile device loaded with sample is placed below micro electrochemical equipment;Second, droplet is formed on the upper surface of sample by dropping experimental solution, the position of two electrodes of micro electrochemical equipment is adjusted, so that two electrodes are immersed in droplet, form current loop, according to the conversion mapping relationship of preset torque and tension, the torque of screw rod connected to tensile clamp is applied corresponding tension torque by using torque wrench and kept, the sample data in holding time is recorded by micro electrochemical equipment, the tension of sample is gradually increased, and the potential change data of the same micro area of sample under different tension is obtained, the torque and tension are overall calibrated by pre-experiment in the application, calibration equation is formed, and the precision is significantly improved compared with traditional displacement loading mode, and the stress corrosion failure behavior of material micro area can be accurately applied in-situ research.

This utility model discloses a fixing cap, relating to the field of brain electrode fixing technology, and aims to solve the technical problem that the use of tape and mesh caps to fix disc electrodes in the prior art may cause the disc electrodes to change position, thereby affecting the accuracy of data acquisition. It includes a strap worn over the patient's head, with several first straps having several positioning clamping devices on them. Each positioning clamping device corresponds one-to-one with a brain electrode position on the head. Each positioning clamping device includes an electrode hole on the first strap and a side hole communicating with the electrode hole. An elastic clamping device is provided inside the electrode hole. The strap is connected to an elastic second strap, and the first and second straps form a mesh structure. The strap also has a first fixing device for adhering the entire first strap to the patient's scalp. This utility model, using a strap, first straps, second straps, electrode holes, etc., ensures that the electrodes do not move during the entire electrode connection process, making the data acquired by this device more accurate.

The application provides a kind of early warning and positioning method and system for lithium battery internal short circuit fault based on deep learning;Early warning and positioning method includes: step S10, multidimensional data semantic acquisition and working condition adaptive pretreatment;Step S20, cross-scale spatiotemporal feature collaborative extraction and alignment;Step S30, dynamic threshold self-adaptive internal short circuit early warning and feedback optimization;Step S40, topological perception fault accurate positioning and verification;Step S50, embedded collaborative optimization and self-diagnosis deployment: the application can find the early weak signal of internal short circuit fault in time, improve the efficiency and timeliness of battery safety monitoring;Improve the sensitivity of early warning;Enhance the robustness in high temperature, low temperature, fast charging and discharging environment;Can accurately identify the battery monomer and electrode position where fault occurs.

The embodiment of the invention provides a preparation method of a display panel, the display panel and electronic equipment, and relates to the technical field of display. The method comprises the following steps: firstly, covering an insulating layer on an electric connection structure, then sequentially manufacturing a first electrode, patterning an isolation structure material layer and patterning a pixel defining material layer, and finally, removing the insulating layer at a second opening to expose the electric connection structure. Compared with the prior art in which at least part of the electric connection structure is exposed when the insulating layer is manufactured, the method can prevent metal ions dissolved in an etching solution from forming conductive particles after obtaining electrons at the position of the electric connection structure when the first electrode is manufactured; therefore, the conductive particles are prevented from being transferred to the position of the first electrode due to liquid medicine cleaning in the follow-up isolation structure material layer patterning and pixel defining material layer patterning process, dark spot defects caused by electrode short circuit in a light-emitting device are avoided, and the display effect and the process yield of the display panel can be improved.