287 results about "Potential electrical" patented technology

The invention discloses a current detection system based on an inductance element, and relates to the technical field of current detection, and the system comprises a power switch module which is used for adjusting the conduction angle of a power switch device; the driving control module is used for improving the signal driving capability and lowering the driving potential; the current sampling module is used for detecting an inductive current change rate; the output detection module is used for adjusting a first fault threshold value and a second fault threshold value according to the aging degree and carrying out first-class short circuit or second-class short circuit detection; the conduction detection module is used for detecting saturated conduction voltage drop; the aging judgment module is used for detecting the aging degree; the detection adjusting module is used for adjusting a third fault threshold value according to the aging degree and cooperating with the short-circuit judgment module to perform second-class short-circuit detection; and the intelligent control module is used for signal receiving and module control. According to the current detection system based on the inductance element, the sensitivity of fault current detection is improved, whether the power switch module is normal or not is accurately judged, and the system safety is improved.

The invention relates to the technical field of integrated circuit manufacturing, in particular to a precise electroplating control system and method for an electroplated layer of a double-layer circuit board, and the method comprises the steps: building a multi-physical field coupling simulation model, and simulating the internal current density and ion concentration distribution of a via hole; constructing a mapping relation between the current density and the side wall electroplating thickness based on a simulation result, and predicting the electroplating thickness; through thickness prediction feedback, a time sequence adjustable pulse current control strategy is designed, the pulse amplitude, the duty ratio and the on-off period are dynamically adjusted, and current distribution optimization is guided; the state of the electroplating process is sensed in combination with real-time monitoring and analysis of multi-source parameters of electrode potential, conductivity and fluid velocity; and based on the prediction model and the real-time parameters, adjusting the pulse waveform and the time sequence through closed-loop compensation. According to the method, the uniformity and controllability of the thickness of the electroplated layer on the side wall of the via hole can be remarkably improved.

To reduce thrust required for carrying a charge carrier by weakening strong retreating electrostatic force acting on the charged charge carrier, and to increase a conveyable charge amount by weakening potential of the charge carrier being carried, in an electrostatic generator.SOLUTION: A charge control layer remote unit is provided that conducts to a main body of a potential control layer provided in the vicinity of a charge retention layer of a charge carrier and by applying a high voltage of a different polarity of charges charged on a potential control layer body to a charge attraction electrode close to the charge control layer remote unit, charges of the potential control layer main body are moved to a potential control layer remote unit. By increasing potential of the charge carrier and conducting the charge carrier and a recovery electrode, the charges can be safely recovered.SELECTED DRAWING: Figure 10

The invention provides a hemispherical resonator gyroscope which comprises a hemispherical resonator, a driving electric substrate and a detection electric substrate, the hemispherical resonator is of a hemispherical structure, the driving electric substrate is of a flat plate type structure, and the detection electric substrate is of an inner spherical surface structure. A first conductive film layer is arranged on the inner surface of the hemispherical harmonic oscillator, a second conductive film layer is arranged on the end face of the lip edge, the detection electric substrate is provided with a detection electrode, and the driving electric substrate is provided with a potential electrode and a driving electrode. The detection electrode and the first conductive film layer form a detection capacitor, and the driving electrode and the second conductive film layer form a driving capacitor. The detection electrode and the driving electrode are separately arranged, so that the coupling of the driving signal and the detection signal can be reduced. The detection electric substrate is of an inner spherical surface structure, so that the area of a detection capacitor formed by the detection electrode and the first conductive film layer can be increased, and the intensity of a detection signal is improved. The driving electric substrate is of a flat plate type structure, and the potential electrode and the driving electrode are arranged on the driving electric substrate, so that the processing and assembling difficulty can be reduced.

To provide a method of eliminating charges in a potential control layer when recovering charges simpler and easier than a new charge carrier that can carry high charges at a low potential in an electrostatic generator.SOLUTION: An eliminated charge holder with the same type and without a potential control layer is provided behind a charge carrier 7 in a traveling direction, and is charged by a charging source 8 with a polarity different from and with an equal amount as charges present in a potential control layer 73 of the charge carrier, and the charges are added to the potential control layer 73 to make a charge amount in the potential control layer 73 zero. Thereby, the charges carried in a state in which a potential of the charge carrier 7 is enhanced can be safely recovered in a simple method.SELECTED DRAWING: Figure 3

The invention discloses an all-solid-state calibration-free ion concentration detection method. The method comprises the following steps: constructing a plurality of traditional three-electrode detection systems; in each traditional three-electrode detection system, current and impedance signals are synchronously acquired through a step potential electrochemical spectrum and an electrochemical impedance spectrum, and interface kinetic parameters are analyzed; on the basis of a traditional three-electrode detection system, an original reference electrode is removed, a counter electrode is reserved, all glassy carbon electrodes with gradient membrane volumes are connected in series one by one to obtain a new three-electrode detection system, the new three-electrode detection system is immersed in a to-be-detected solution, a preset potential is applied, and through transient current response in combination with calibrated kinetic parameters, the gradient membrane volumes of the glassy carbon electrodes are detected. And performing inversion to obtain the ion concentration of the to-be-detected solution. According to the method, automatic calibration is realized by analyzing interface process kinetic parameters of different-volume film ion selective electrodes and calculating the slope to generate a built-in standard curve. According to the method, interface process parameters are obtained through transient current, and dependence of a traditional detection system on the stable potential of a reference electrode is eliminated.

The invention belongs to the technical field of power distribution cabinet inspection, and particularly relates to a power distribution cabinet power performance inspection system and method. According to the invention, by monitoring the power, current, temperature and other data of the power distribution cabinet in real time, abnormal electrical units can be found in time, faults can be prevented, stable operation of the power distribution cabinet can be ensured, the current and temperature weight values are comprehensively considered and combined with the power data, and the operation risk of the power distribution cabinet can be evaluated more comprehensively and accurately. Misjudgment caused by single data abnormity is avoided, potential electrical unit faults are found and positioned in advance, the overall fault occurrence probability is reduced, the maintenance cost and downtime are further reduced, an inspection report can be automatically generated, an alarm signal can be sent out, the workload of manual inspection is reduced, and the operation and maintenance efficiency is improved.

The present specification discloses a gate driver including first and second pull-up transistors, first and second pull-down transistors, a first output terminal configured to output a carry signal, an Ath transistor disposed between the first and second pull-up transistors and configured to electrically separate a Q node in response to a control signal, a Bth transistor disposed between the Ath and second pull-up transistors and configured to supply a low potential voltage to the second pull-up transistor in response to a control bar signal, and a Cth transistor connected to the second output terminal to supply the low potential voltage in response to the control bar signal. According to the present specification, by reducing a capacitive load compared to the related art at the same time upon sensing for electrical characteristic compensation of a pixel circuit, it is possible to quickly charge a capacitance and enable accurate sensing.

An organic light emitting display device and a method for providing low luminance power thereof includes a data driver including a lookup table storing therein a low potential voltage and an initialization voltage corresponding to each gamma set such that a low potential voltage and an initialization voltage in a 60 Hz operation mode are respectively different from a low potential voltage and an initialization voltage in a 90 Hz operation mode and a method compensates for an anode charging time in the low luminance range, thereby improving seamlessness.

A power converter includes a high-potential electrical path (22H), a low-potential electrical path (22L), an inverter (20), a motor (10), an inter-storage switch (40), a bypass switch (50, 51), and a motor-side electrical path (25-28). The inverter has an upper-arm switch (SWH) and a lower-arm switch (SWL). The motor has an armature winding (11) electrically connected to a connection point between the upper-arm and the lower-arm switches via a conductive member (23). The inter-storage switch is located at an inter-storage electrical path (24) that electrically connects a negative terminal of a first power storage unit (31) to a negative terminal of a second power storage unit (32). The bypass switch establishes at least one of an electrical connection between the negative terminals of the first and second power storage units or the positive terminals of the first and second power storage units. The motor-side electrical path electrically connects the inter-storage electrical path to either the armature winding or the conductive member.

An electronic package includes an interposer having an interposer substrate, a cavity that passes into but not through the interposer substrate, a through interposer via (TIV) within the interposer substrate, and an interposer pad electrically coupled to the TIV. The electronic package includes a nested component in the cavity, wherein the nested component includes a component pad coupled to a through-component via. A core via is beneath the nested component, the core via extending from the nested component through the interposer substrate. A die is coupled to the interposer pad by a first interconnect and coupled to the component pad by a second interconnect.

The utility model discloses a battery with safety monitoring, a battery system and an electric vehicle, the battery comprises a single battery main body and a battery monitor, the battery monitor comprises a data monitoring unit, a data processing unit and a display; the data monitoring unit is arranged in the single battery main body and is used for collecting state data of the single battery main body; the data processing unit is arranged on the outer side of the single battery main body, respectively receives the state data acquired by the data monitoring unit according to a first preset condition and outputs a display signal, and the display is arranged on the outer side of the single battery main body and receives and displays the display signal transmitted by the data processing unit. According to the battery provided by the invention, the air pressure, the expansion force, the cathode potential, the voltage, the current and the temperature in the battery are monitored in real time through the safety detector, and multi-data conjoint analysis is performed through the data processing unit, so that early warning of a single battery safety accident is realized, and the early warning accuracy of the single battery is improved.

The invention belongs to the technical field of electronic circuits, and particularly discloses a portable electrochemical detection device which comprises an excitation circuit, a constant potential circuit, an electrochemical sensor, a current-voltage conversion circuit and a low-pass filter circuit which are connected in sequence, the excitation circuit is used for generating control voltage; the constant potential circuit is used for applying stable bias voltage to a reference electrode and a counter electrode of the electrochemical sensor in combination with the control voltage, so that a working electrode of the electrochemical sensor generates a current signal corresponding to the concentration of an object to be detected; the current-voltage conversion circuit is used for converting the current signal into a voltage signal; and the low-pass filter circuit is used for filtering high-frequency noise in the voltage signal. The detection device has the advantages of wide range, adjustability, high precision, high accuracy, small size and the like, provides a new thought and method for trace harmful substance detection in the field of electrochemistry, and has wide application prospects in the fields of environmental monitoring, biomedical treatment, food safety and the like.

The invention relates to a DC / DC converter (1) for charging a battery (4) in a boost mode, wherein the DC / DC converter (1) has a primary side (P) and a secondary side (S), wherein on the primary side (P) and on the secondary side (S) a capacitance (CX_P, CX_S) is electrically coupled between a respective positive potential (HV+1, HV+2) and a respective negative potential (HV-1, HV-2), wherein - the primary side (P) and the secondary side (S) each have at least two half-bridges (HB1, HB2, HB3, HB4), each with a high-side switch designed as a semiconductor switch (S1, S3, S5, S7, D) and a low-side switch designed as a semiconductor switch (S2, S4, S6, S8), - LC resonant circuits (2.1, 2.2) designed as series resonant circuits are arranged between center taps of the half-bridges (HB1, HB2) on the primary side (P) and center taps of the half-bridges (HB3, HB4) on the secondary side (S), wherein exactly one of the potentials (HV+1, HV-1) of the primary side (P) is galvanically connected to the opposite pole potential (HV-2, HV+2) of the secondary side (S), wherein the other potential (HV-1, HV+1) of the primary side (P) is galvanically connected to a same pole battery terminal of the battery (4).

Embodiments of the present application provide a display panel and a display device. The display panel comprises a gate drive circuit. A pull-down capacitor is arranged in the gate drive circuit. At least one of a first node and a second node is electrically connected to a first plate of the pull-down capacitor. A second plate of the pull-down capacitor is electrically connected to a low potential power supply end. The pull-down capacitor is arranged between the at least one of the first node and the second node and the low potential power supply end. The pull-down capacitor can improve the ability to maintain the first node and / or the second node at a low potential. The ability to maintain other nodes and a signal output end at a low potential is improved. The pull-down speed is improved. The ability to maintain a low potential is improved. The channel width of a transistor in a pull-down maintenance module and an inverting module can be appropriately reduced due to the increased pull-down maintenance ability of the pull-down capacitor. As a result, the leakage current is reduced. The low leakage and the low potential maintenance ability of the gate drive circuit are balanced.

The invention provides a transformer area topology identification method and system based on a graph neural network, and relates to the technical field of power system power distribution networks, and the method comprises the steps: taking an HPLC concentrator as an edge module, carrying out the modeling of a transformer area into a graph structure, taking a transformer and an intelligent electric meter as the nodes of the graph structure, and taking the potential electrical connection between the nodes as the edge of the graph structure; the edge module collects multi-source data of each intelligent electric meter in a transformer area, and after the multi-source data is preprocessed, node feature vectors and edge feature matrixes are obtained according to the preprocessed multi-source data; the edge module learns node features and edge features by using a graph neural network based on the obtained node feature vectors and edge feature matrixes, and calculates the probability of electrical connection between any two nodes; and the edge module adopts a minimum spanning tree algorithm to generate a transformer area topological structure according with the set physical constraint according to the obtained result. According to the invention, high-precision automatic identification of the transformer area topology can be realized.

The invention provides a power distribution network electricity-related risk identification method and device, equipment, a medium and a product. The method comprises the following steps: acquiring electrical parameters, non-electrical parameters and environmental parameters of a plurality of pieces of power equipment in a power distribution network at a plurality of moments; for each moment, according to the non-electrical parameters of the multiple pieces of power equipment corresponding to the moment, adding non-electrical parameters in the first knowledge graph to obtain a second knowledge graph corresponding to the moment; obtaining an attribute feature corresponding to the moment and an association relationship between the power equipment and the attribute feature from a second knowledge graph corresponding to the moment; and inputting the electrical parameters, the environmental parameters and the attribute features at the plurality of moments and the association relationship between the power equipment and the attribute features into a pre-trained power-related risk identification model, and predicting to obtain the power-related risk condition of each power equipment in the plurality of power equipment. The method is used for achieving the effect of accurately predicting the potential electricity-related risk in the power distribution network.

A power semiconductor device comprising: a metallic conductor frame (2) comprising opposing main surfaces, one of which is a mounting surface (2a) and the other a discharge surface (2b), and comprising a P-potential electrode (21), intermediate potential electrodes (22a, 22b) and an N-potential electrode (23) which are electrically independent; a switchable power semiconductor chip (3, 3a, 3b, 3c, 3d) and a current detection resistor (4) which is connected to the mounting surface (2a) of the conductor frame (2) via a conductive connecting element (5a); a conductor element (6, 6a, 6b, 6c) which connects an electrode of the power semiconductor chip (3, 3a, 3b, 3c, 3b) to a section of the conductor frame (2); and a resin (7) which covers a section of the mounting surface (2a) of the conductor frame (2), the power semiconductor chip (3, 3a, 3b, 3c, 3b), the resistor (4) and the conductor element (6, 6a, 6b, 6c), wherein the P-potential electrode (21) and the N-potential electrode (23) are positioned on a center line (C) of the conductor frame (2) and the conductor frame (2), the power semiconductor chip (3, 3a, 3b, 3c, 3d), the conductor element (6, 6a, 6b, 6c) and the resistor (4) are positioned symmetrically with respect to the center line (C).

An apparatus, including: an antenna interface, comprising: a first transformer including a first transmission line coupled to a second transmission line, wherein the first transmission line includes first and second ends configured to couple to a first communication device and a reference potential electrode, respectively, and wherein the second transmission line includes first and second ends configured to couple to an antenna and a second communication device, respectively; and a second transformer including a third transmission line coupled to a fourth transmission line, wherein the third transmission line includes first and second ends configured to couple to the first communication device and the reference potential electrode, respectively, and wherein the fourth transmission line includes first and second ends configured to couple to the second communication device and a ballast load, respectively.

The material adding device with the protection function in the petrochemical industry comprises supporting legs, the tops of the supporting legs are fixedly connected with a bottom plate, the top of the bottom plate is provided with a feeding protection assembly, and the feeding protection assembly comprises a petrochemical barrel. Through mutual cooperation of the protective cover, the barrier plate, the rotating rod and the like in the feeding protective assembly, a manual rotating mode instead of an electric driving mode is adopted, the potential electrical fire risk is reduced, the protective cover covers the top of the feeding pipe and the top of the petrochemical barrel, and the safety of the petrochemical barrel is improved. Petrochemical materials can be effectively prevented from being accidentally leaked or splashed out in the adding process, the risk of environmental pollution or personnel injury is avoided, the blocking plate can be tightly attached to the outer wall of the petrochemical barrel to form physical isolation, the petrochemical materials can be effectively prevented from overflowing or making contact with the external environment in the adding process, and the service life of the petrochemical barrel is prolonged. And the risk of leakage of chemical and petrochemical materials is reduced.

The battery pack structure comprises a mounting frame, a battery pack, a battery signal acquisition plate and at least two current collecting tabs. The mounting frame is used for being mounted on the inner side of the shell of an energy storage device, and a mounting space is formed between the mounting frame and the shell. The battery pack is arranged in the mounting space. The mounting frame is formed with at least two mounting portions. At least one current collecting tab is arranged on each mounting portion, and each current collecting tab contacts one same-potential electrode portion of the battery pack. The battery signal acquisition plate is mounted on the mounting frame, and the battery signal acquisition plate is in contact with and electrically connected with the at least two current collecting tabs, so that the electrical signals of each single battery can be acquired at one time through the battery signal acquisition plate. Therefore, the use of a wire harness in the energy storage device can be greatly reduced, and the influence of crosstalk interference on the acquisition accuracy of the battery signal acquisition plate is reduced.

According to an aspect of the present disclosure, the display device includes: a substrate including a display area and a non-display area adjacent to the display area, a plurality of light emitting diodes disposed in the display area and each including a cathode, a contact electrode disposed in the non-display area, and a plurality of insulating layers disposed on the substrate. At least one of the plurality of insulating layers includes a plurality of protrusions disposed between the substrate and the contact electrode, and the contact electrode is composed of a convex portion overlapping with the plurality of protrusions and a concave portion between the plurality of protrusions. Therefore, according to the present disclosure, the surface area of the contact electrode is increased due to the plurality of protrusions so that a resistance between the contact electrode and the cathode can be reduced.

A detection device includes: a detector including first electrodes and second electrodes disposed around a the first electrodes; a detection circuit configured to detect proximity of an external object to the detector; a power circuit configured to generate a square wave; and a filter that is coupled to the power circuit through an isolator and configured to receive the square wave transmitted through the isolator. The filter includes a low-pass filter circuit and a digital potentiometer. A periodically oscillating potential based on output from the filter is provided as a reference potential of the power circuit and provided to the second electrodes. A reference potential of the filter is a fixed potential. The power circuit can change the frequency of the generated square wave. The filter can change the frequency of the periodically oscillating potential in accordance with an electric resistance value of the digital potentiometer.

A display device PN comprising a first substrate I IO; a plurality of top pads disposed on the first substrate TPAD; a second substrate 130 below the first substrate; a plurality of bottompads below the second substrate BPAD; a plurality of side lines SRL on side surfaces of the first and second substrates connecting the plurality of top pads and the plurality of bottompads. Each of the plurality of top and bottom pads includes: a plurality of first pads disposed in first pad areas TPA I / BPAI of the first edges EGI, and a plurality of second pads disposed in second pad areas TPA2 / BPA2 of the second edges EG2 of the first and second substrate. A high potential and low potential voltage is applied to the first and second plurality of padsrespectively. A plurality of ground pads TGNP disposed in first edges of the first and the second substrate are spaced apart with the plurality of first pads therebetween.

The invention discloses a synchronous measurement and stable regulation and control system for electrical quantity and non-electrical quantity. The system comprises a data acquisition and processing unit, a control algorithm unit, a central control module and a system self-regulation and control unit, the data collecting and processing unit is used for collecting electrical quantity and non-electrical quantity data and transmitting the electrical quantity and non-electrical quantity data to the central processing unit module, the control algorithm unit is used for conducting complex operation on the basis of the received data through a specific algorithm, the optimal voltage value and the optimal parameters of the humidity and the temperature are calculated, the voltage, the humidity and the temperature are accurately adjusted, and the control precision is improved. And the optimal state is achieved. According to the invention, through real-time accurate monitoring and stable regulation and control of the electrical quantity, potential electrical safety hazards can be found and solved in time, and the safety of the production environment is ensured; accurate electrical quantity and non-electrical quantity data are measured, analysis results based on the data are obtained, a comprehensive and accurate decision basis is provided for an enterprise management layer, and an enterprise is helped to make a long-term development strategy.

The utility model discloses a film laminating and pressing structure and a circuit board, and the film laminating and pressing structure comprises a substrate, the surface of which is provided with holes; the two stack-up structures are symmetrically arranged on the two sides of the substrate, and each stack-up structure comprises a barrier film, a three-in-one release film, a pressure buffering film and a heat conducting plate which are sequentially stacked on the substrate. According to the flexible-rigid combined board manufacturing method, by symmetrically arranging the stacked structures comprising the barrier films, the three-in-one release films, the pressure buffering films and the heat conduction plates on the two sides of the substrate, the common hole plugging problem during flexible-rigid combined board manufacturing in the traditional technology is solved, for example, the two release films are used as the barrier films and the pressure buffering films respectively, and the manufacturing cost is reduced. Wherein the barrier film is used for preventing a three-in-one release film material from being extruded into a hole in a substrate, and the pressure relieving film plays a role in relieving extrusion, so that the situation that an auxiliary material enters the hole due to uneven or overlarge pressure in the pressing process is effectively prevented, the cleanliness of the hole of the substrate is ensured, electrical faults possibly caused by the cleanliness are avoided, and the service life of the substrate is prolonged. And meanwhile, the appearance quality and the overall performance of the product are greatly improved.

The present application relates to a kind of island self-guarantee type base station energy storage device, including shell, positioning frame and energy storage piece;The shell is reserved with storage cavity, wherein storage cavity is used for the storage of energy storage piece, the opening position of shell near storage cavity is hinged with door plate by hinge, the side plate position of shell is installed with control panel, wherein control panel is used for overall control.This island self-guarantee type base station energy storage device moves by control panel operation motor drive lead screw and block, realize to energy storage piece maintenance disassembly, its energy storage piece is in the state without current, avoid the cumbersome step of needing to reach into the equipment inside to disconnect in traditional method, improve maintenance efficiency, and prevent the short circuit risk caused by direct pull terminal, to reduce potential electrical accident, by avoiding short circuit and improper operation, improve the healthy life of energy storage piece, reduce the damage probability in maintenance process.

The present invention discloses a current detection system based on an inductor element, which relates to the technical field of current detection, and includes a power switch module for adjusting the conduction angle of a power switch device; a drive control module for improving the signal driving capability and pulling down the driving potential; a current sampling module for detecting the rate of change of the inductor current; an output detection module for adjusting the first fault threshold and the second fault threshold according to the degree of aging and performing a type I short circuit or a type II short circuit detection; a conduction detection module for detecting a saturated conduction voltage drop; an aging judgment module for aging degree detection; a detection adjustment module for adjusting the third fault threshold according to the degree of aging and cooperating with the short circuit judgment module to perform a type II short circuit detection; and an intelligent control module for signal reception and module control. The current detection system based on the inductor element of the present invention improves the sensitivity of fault current detection, accurately determines whether the power switch module is normal, and improves system safety.

The invention discloses a three-level power module which comprises a three-level power circuit, a positive electrode leading-out endpoint of a positive electrode layer of the three-level power circuit is arranged close to a first high-voltage outer side chip, a first midpoint electrode leading-out endpoint of a first midpoint potential electrode layer is arranged close to a first midpoint clamping chip, and a second midpoint electrode leading-out endpoint of a second midpoint potential electrode layer is arranged close to a second high-voltage outer side chip. A second midpoint electrode leading-out endpoint of the second midpoint potential electrode layer is arranged close to the second midpoint clamping chip, a negative electrode leading-out endpoint of the negative electrode layer is arranged close to the second high-voltage outer-side chip, and the upper bridge arm inner-side chip and the lower bridge arm inner-side chip are located in the center area of the substrate in the first direction. The second midpoint clamping chip and the first midpoint clamping chip are respectively located at the peripheral areas of the two sides of the substrate, and the second midpoint clamping chip, the first high-voltage outer side chip, the upper bridge arm inner side chip, the lower bridge arm inner side chip, the second high-voltage outer side chip and the first midpoint clamping chip in the three-level power circuit are arranged in sequence.

The utility model discloses a ship intelligent power management system with a current monitoring function, which comprises a fuse and a load, the fuse is connected with a power supply, a current measuring resistor is arranged between the fuse and the load, two ends of the current measuring resistor are connected with a signal processing circuit, and the signal processing circuit is connected with a cabin alarm module. The fuse can monitor the current change in real time, and transmits the data to the cabin alarm module in real time for analysis and alarm. When the current exceeds a set range, the cabin alarm module can give an alarm in time, and potential electrical faults or fire hazards are avoided.