951 results about "Ground line" patented technology

The invention provides a personnel safety dynamic early warning method and system for distribution network line operation, and relates to the technical field of intelligent power grid management, and the method comprises the steps: calling an operation work ticket which comprises a work task, operation personnel information, safety measure requirements, grounding wire installation information, and a regulation and control instruction; text semantic structuring preprocessing is executed, and three-dimensional security features are extracted; security statement extraction is carried out, and a structured task template is established; when the positioning information of the target operating personnel is identified to accord with the area range of the target area, activating the target area; establishing a time sequence working data set based on ground wire intelligent sensing and operation tool intelligent sensing; and performing security verification, and generating a security dynamic early warning. According to the invention, the technical problem that the response speed and accuracy of safety early warning are reduced because the safety assessment of the operation task is not accurate enough due to the lack of an intelligent information extraction and task verification mechanism in the distribution network line operation in the prior art is solved.

The invention provides an adapter and a tumor electric field treatment system, an electrode plate comprises a plurality of electrode units and a plurality of temperature detection units, the plurality of temperature detection units are divided into a plurality of row groups and a plurality of column groups, and the grounding ends of the temperature detection units in each row group are connected to the same grounding wire. The signal end of each temperature detection unit in each column group is in short circuit with the corresponding electrode unit and then is connected to the same dual-purpose signal line; a bidirectional change-over switch of the adapter is configured to switch a dual-purpose signal line to be connected to a temperature sampling point or an alternating power line, and when the dual-purpose signal line is connected to the temperature sampling point, each grounding line is conducted in sequence so that a temperature detection signal detected by each temperature detection unit is sampled based on the temperature sampling point; and when the dual-purpose signal line is communicated with the alternating power line, an alternating current signal is transmitted to each electrode unit through the dual-purpose signal line, so that partition control and comprehensive temperature detection of the electrode plate are realized.

The invention provides a tumor electric field treatment system and an electrode slice temperature detection method, the system comprises an electrode slice and a controller, the electrode slice comprises a plurality of electrode units and a plurality of temperature detection units, the plurality of temperature detection units are divided into a plurality of row groups and a plurality of column groups, the grounding ends of the temperature detection units in each row group are jointly connected to the same grounding wire, and the signal ends of the temperature detection units in each column group are connected to the same dual-purpose signal wire after being in short circuit with the corresponding electrode units; when the dual-purpose signal line is connected to the temperature sampling point, the grounding wires are sequentially conducted, so that temperature detection signals detected by the temperature detection units are sampled based on the temperature sampling point; when the dual-purpose signal line is connected to the alternating power line, alternating electric signals are transmitted to the electrode units. In this way, a plurality of electrode units can be zoned and controlled using fewer conductive traces.

A data storage device includes a bad block management system. The bad block management system detects a grown bad block of the data storage device. When a grown bad block is detected, the bad block management system initiates a manual block write process on the wordlines associated with the grown bad block. The manual block write process includes programming the wordlines of the grown bad block in a particular state and with a voltage that closes a leakage path between a bit line associated with the grown bad block and a ground line or a ground path associated with the grown bad block.

The invention relates to the technical field of power distribution network fault early warning, and discloses an early warning system and method for a power distribution network ground fault. The data acquisition module of the system acquires multi-mode monitoring data such as zero-sequence current waveform, grounding wire current amplitude phase, insulator leakage current and environment temperature and humidity of the power distribution network in real time, and comprehensively reflects the operation state of the power distribution network. And the feature fusion module performs spatial-temporal feature compensation on the multi-modal monitoring data to generate a fault feature tensor, so that the insulation degradation evolution period of the topological node of the power distribution network is determined, and the insulation state change is accurately evaluated. And the risk deduction module analyzes a dynamic communication path of the topological structure of the power distribution network, performs fault conduction modeling, determines a ground fault risk situation level in combination with multi-modal monitoring data, and comprehensively considers fault conduction characteristics and operation conditions. The early warning decision module generates a dynamic early warning strategy according to the insulation degradation evolution period and the risk situation level, and the early warning mode is flexibly adjusted.

The invention relates to the technical field of cable insulation detection, and discloses a power cable insulation state evaluation method and system based on multi-dimensional feature fusion, and the method comprises the steps: collecting a high-frequency current signal on a cable grounding wire, extracting a power frequency phase, a discharge amplitude and a pulse frequency band width, and carrying out the normalization processing, thereby obtaining a sample set; calculating a local sparseness adaptive factor of each sample point, and calculating an energy weighted local density of each sample point; calculating the relative distance of each sample point, constructing a decision value, and determining the sample point with the larger decision value as a clustering center; calculating the path transmission reliability of the non-clustering center sample points relative to each clustering center, distributing the sample points with the path transmission reliability meeting a preset condition to the corresponding clustering center, and if the preset condition is not met, marking the sample points as noise; and extracting statistical characteristics according to the separated discharge clusters, and evaluating the insulation state of the cable by using a preset fault diagnosis rule base. According to the invention, the accuracy of cable insulation state evaluation can be improved.

The invention provides a tumor electric field treatment system and an electrode slice quality detection method, the system comprises electrode slices, each electrode slice comprises a plurality of electrode units and a plurality of temperature detection units, the plurality of electrode units are divided into a plurality of row groups and a plurality of column groups, the grounding ends of the temperature detection units in each row group are short-circuited to the same grounding wire, and the grounding ends of the temperature detection units in each column group are short-circuited to the same grounding wire; the signal end of each temperature detection unit in each column group is in short circuit with the corresponding electrode unit and then is jointly connected to the same dual-purpose signal line. Thus, the electric field generator or the adapter can use fewer conductive traces to perform partition control on a plurality of electrode units and sampling of temperature detection signals, and can perform quality detection on the electrode slices based on the sampled temperature detection signals.

A vehicle includes a window having an antenna assembly. The window includes a glass surface, a metal frame around the glass surface, and a set of defroster wires in the glass surface. A top wire of the set of defroster wires is separated from a top edge of the metal frame by an antenna region. The antenna is disposed in the antenna region. The antenna has a first end and a second end opposite the first end. The first end intersects a horizontal cover line of the metal frame tangentially. A feed line connects to the first end at the horizontal cover line. A ground line electrically couples the second end of the antenna to the metal frame.

The present invention discloses a broadband high-steepness filter based on the embedding of a piezoelectric acoustic resonator and an LC passive circuit, which includes a ladder-type filtering network and an LC resonance network. The ladder-type filtering network and the LC resonance network are connected in series in sequence, or the ladder-type filtering network and the LC resonance network are connected in series at intervals in sequence. The ladder-type filtering network includes a filtering series main path and a plurality of filtering parallel branches. The first end of the filtering series main path serves as the input end, and both ends of the filtering parallel branches are respectively connected to the ground wire and the series main path. At least one series hybrid resonance unit is arranged on the filtering series main path, and the series hybrid resonance unit is used to form poles in the passband to expand the passband bandwidth. At least one acoustic resonator or parallel hybrid resonance unit is arranged on the filtering parallel branch. This filter can achieve a relatively high bandwidth, a relatively high out-of-band rejection, and a relatively narrow transition band.

An electronic device is provided. The electronic device includes a slidable housing including a first housing and a second housing, a first substrate included in the first housing and including a processor, a second substrate included in the second housing, a flexible printed circuit board (FPCB) which includes a ground line, electrically connects the first substrate and the second substrate to each other, and has a shape changed according to the movement of the slidable housing, and a matching circuit electrically connecting the first substrate and at least a portion of the ground line of the FPCB, and changing impedance under the control of the at least one processor according to the shape of the FPCB.

A flexible circuit board and a foldable electronic device includes a first multi-layer region, a second multi-layer region and a highly bendable region disposed between the first multi-layer region and the second multi-layer region. The first multi-layer region and the second multi-layer region include a structure in which a plurality of copper clad laminates (CCLs) are stacked. The highly bendable region includes a structure in which a single CCL extending from one CCL among the plurality of CCLs in the first multi-layer region and the second multi-layer region is stacked. The single CCL may be configured such that a first ground wire, a second ground wire, and a plurality of sub wires disposed to be spaced apart between the first ground wire and the second ground wire transmit a single RF signal.

The utility model provides a short-circuit protection circuit for a Type-C interface, and belongs to the technical field of short-circuit protection circuits. Comprising an interface module, an overvoltage and electromagnetic protection circuit and a switching circuit, the interface module, the overvoltage and electromagnetic protection circuit and the switching circuit are connected in series on the same power line and grounding line, and a common circuit and a standby circuit are arranged in the switching circuit and are both connected with the power line. According to the utility model, through the cooperation of the resettable fuse, the double-pole double-throw relay and other elements, the circuit can be rapidly switched so as to ensure that the interface can continue to work normally without maintenance when a short-circuit fault occurs, and through the synergistic effect of the gas discharge tube, the first transient suppression diode, the second transient suppression diode, the electrolytic capacitor and other elements, the short-circuit fault of the interface can be effectively prevented. The problems of overvoltage and electromagnetic interference during short circuit can be effectively relieved.

The utility model discloses an insulation resistance detection circuit and new energy equipment. The insulation resistance detection circuit comprises a first resistor, a second resistor, a first switch and a second switch, the first resistor and the first switch are connected in series to form a first detection branch, and the second resistor and the second switch are connected in series to form a second detection branch; the first detection branch and the second detection branch are connected in parallel and then are connected between a negative DC bus and a grounding wire or between a positive DC bus and the grounding wire. According to the insulation resistance detection circuit and the new energy equipment, the insulation resistance detection circuit is composed of the first resistor, the second resistor, the first switch and the second switch, the circuit structure is simple, the cost is low, and the ground insulation resistance of the equipment can be effectively detected.

The invention discloses a semiconductor package and a semiconductor package assembly. The semiconductor package comprises a first interconnection structure; the first chip is arranged on the first interconnection structure and is coupled with the first interconnection structure; a first redistribution layer disposed on the first chip and coupled to the first chip; a molding compound disposed on the first interconnect structure and encapsulating the first chip and the first redistribution layer; and a through-mold via passing through the molding compound and connecting between the first redistribution layer and the first interconnect structure; the first chip comprises a first back connection structure and a second back connection structure, a first transistor layer; a first front connection structure; and a first carrier on the first interconnect structure and coupled to the first interconnect structure. Therefore, the thick power supply / ground wire and the thin signal wire are separately arranged, and mutual interference possibly existing between power supply / ground transmission and signal transmission can be avoided.

A drain programmed read-only memory includes a plurality of bit lines for each drain-programmed transistor. In addition, the drain-programmed read-only memory includes a pair of ground lines for each drain-programmed transistor. A decoder decodes a plurality of bits from each drain-programmed transistor by determining which bit line (if any) and which ground line is coupled to the drain-programmed transistor.

Adult verification of the aerosol generating device is performed via BLE (Bluetooth (registered trademark) Low energy) communication using a PIFA (Planar Inverted-F Antenna) including an example circuit board, power supply line, antenna pattern, and ground line.

A plasma processing apparatus includes a radio-frequency (RF) power supply; a pair of plasma electrodes, and a matcher disposed between the pair of plasma electrodes and the RF power supply. The matcher includes an RF feed line supplied with RF power from the RF power supply; a ground line; a first load line connected to one of the plasma electrodes; a second load line connected to the other of the plasma electrodes; an impedance matching circuit connected to the RF feed line, the first load line, the second load line, and the ground line, and including variable reactance elements; an RF sensor that is provided in the RF feed line and detects the RF power; a voltage sensor that detects a first peak value; and a matcher controller that controls the variable reactance elements by inputting detected values from the RF sensor and the voltage sensor.

According to one embodiment, a strain detection device includes a plurality of strain gauges arranged in a row, a power line, a ground line, a first signal line, and a second signal line each extending along the row of the strain gauges, a plurality of first open / close switches each connected between the one end of each of the strain gauges and the power supply line, a plurality of second open / close switches each connected between of the other end of each of the strain gauges and the ground line, a plurality of third open / close switches each connected between the one end of each of the strain gauges and the first signal line, and a plurality of fourth open / close switches each connected between the other end of each of the strain gauges and the second signal line.

A data storage device includes a bad block management system. The bad block management system detects a grown bad block of the data storage device. When a grown bad block is detected, the bad block management system initiates a manual block write process on the wordlines associated with the grown bad block. The manual block write process includes programming the wordlines of the grown bad block in a particular state and with a voltage that closes a leakage path between a bit line associated with the grown bad block and a ground line or a ground path associated with the grown bad block.

The invention discloses an inland waterway freight ship rail charging system, which comprises a charging rail and connecting module, a power supply module, a control module and a safety protection module, and is characterized in that overhead contact lines are mounted on two sides of a river bank, and ground wires arranged on the bank cooperatively work with the overhead contact lines; by means of a composite positioning system based on laser radar and visual identification, shore charging equipment is monitored in real time, the laser radar rapidly measures distance and angle information between a ship and the charging equipment, and when the ship sails close to a specific area in an inland waterway, the ship is in butt joint with the shore charging equipment to be charged in a slow sailing state; the key problem existing in an existing charging mode is solved, so that popularization and application of inland river new energy freight ships are greatly promoted, and a foundation is built for green development and transformation and upgrading in the field of inland river shipping.

The high-temperature-resistant cable special for the crane crane is characterized by comprising three power line units, a ground line unit, a filling rope, a wrapping tape, an inner sheath, a steel wire braided reinforcing layer and an outer sheath, the silicone rubber material is adopted as the insulating material of the power line and is matched with the steel wire braided reinforcing layer with high braiding density, so that insulation ablation penetration can be effectively avoided at extremely high temperature, the frictional resistance between the insulating layers can be effectively reduced when the cable is bent and moved, cable bulging and conductor core breakage are avoided, and the service life of the cable is prolonged. The service life of the cable in a high-temperature environment can be effectively prolonged, and the problems of sheath ablation and core breakage are reduced.

A drain programmed read-only memory includes a plurality of bit lines for each drain-programmed transistor. In addition, the drain-programmed read-only memory includes a pair of ground lines for each drain-programmed transistor. A decoder decodes a plurality of bits from each drain-programmed transistor by determining which bit line (if any) and which ground line is coupled to the drain-programmed transistor.

The invention relates to the technical field of cable fault diagnosis, in particular to an intelligent cable line fault diagnosis system, which comprises the following steps of: performing unified numbering, time alignment and difference elimination on multiple monitoring data such as a cable joint temperature value, a ground wire current level, a cable well water level height, a phase voltage current level and a sheath potential difference; a continuous and complete operation state sequence is formed, synchronous fusion of multi-dimensional abnormal features is realized, abnormal marks are mapped to the positions of a branch box and a cable well, a topological relation between nodes and roadsides is established, sorting is performed in combination with abnormal time, an abnormal propagation path is accurately described, and accurate coordinates of fault nodes are gradually converged. Through the determined coordinate information, in combination with the branch box number, the cable well number and the connector list, the disposal list containing the isolation point and the entry point location can be quickly generated, and the accuracy of fault diagnosis, the positioning precision and the disposal timeliness are improved.

To reduce the overall volume of a power converter to make it more convenient to carry when traveling. [Solution] In one embodiment, the pin combination structure of a small power converter includes a European standard pin unit and a British standard pin unit. The British standard pin unit includes a British standard shared slide base slidably arranged within the power converter and a British standard ground wire pin arranged on the British standard shared slide base. The British standard shared slide base is U-shaped overall and has a retreat space formed therein. The European standard pin unit includes a European standard shared slide base slidably arranged within the retreat space and a European standard sleeve slidably arranged within the retreat space. The European standard sleeve has a first British standard ground wire retreat slot recessed inward to fit the British standard ground wire pin, and the British standard ground wire pin moves within the first British standard ground wire retreat slot.

To provide a connector module with stable EMC, a connector module includes: a receptacle on a substrate; and a plug electrically connected to the receptacle and electrically connectable to a communication cable, the plug including: a connector including an outer conductor electrically connectable to the communication cable; and a connection member connecting the connector to the receptacle and electrically connected to a ground line on the substrate, the outer conductor including: a cylindrical conductor body; and an annular flange extending from the conductor body to a radially outward side, the flange including a step on a facing side facing the connection member, the connection member being in contact with an upper level portion or a lower level portion.

The invention discloses a synchronous self-calibration cable distributed partial discharge detection calibration positioning device and method, and relates to the technical field of power system cable insulation state detection. The device comprises an upper computer and at least two acquisition and detection systems, for any acquisition and detection system, the detection module receives the control signal and outputs a synchronous calibration signal; the pulse calibration unit excites a calibration pulse signal on the cable shielding grounding wire according to the synchronous calibration signal, and takes the obtained excitation pulse signal as a time reference signal; the detection module determines a pulse time difference based on the time reference signal; the upper computer calibrates the adjacent acquisition and detection systems according to the pulse time difference, and performs waveform comparative analysis on acquired data acquired after calibration to obtain an analysis result; the analysis result is used for realizing detection positioning based on waveform time delay. The invention aims to realize synchronous function calibration and partial discharge detection positioning of cable distributed partial discharge detection.

The invention relates to the technical field of electric connectors, in particular to a lightning protection radio frequency electric connector which comprises a radio frequency connector shell, a threaded shell and a connecting cylinder, the outer side of a radio frequency cable is fixedly welded to the left end of a first spiral wire, and the outer side of a shielding sleeve is fixedly welded to the left end of a second spiral wire. The outer side of the plug pin cylinder is electrically connected with a connecting wire, the other end of the connecting wire is welded and fixed to the welding position of the right end of the first spiral wire and the welding position of the right end of the second spiral wire, and the inner wall of the shielding sleeve and the inner wall of the right end of the outer coaxial pin assembly make contact with the first insulator in an attached mode. The inner coaxial pin assembly is communicated with an electric connecting line of an external radio frequency plug cord, the pin cylinder is communicated with a ground line of the external radio frequency plug cord, and through the arrangement, the connector device has a good lightning protection effect on radio frequency signals on the premise that the connector device is light in weight and high in electric connection reliability.

A shielded flat cable includes a plurality of conductors arranged in parallel and including a ground line, an insulator including a first insulator disposed on an upper surface of the plurality of conductors and a second insulator disposed on a lower surface of the plurality of conductors, a metal foil disposed above the first insulator and electrically connected to the ground line, and a shield layer electrically connected to the metal foil and disposed so as to surround outer peripheries of the insulator and the metal foil.

To enable safe initiation of a shuttle operation in an automatic train operation device that uses a point transmission / reception system using a ground element.SOLUTION: An ATO onboard device 10, which is an automatic train operation device installed on a tail-end vehicle 3 of an organized train, sets whether the tail-end vehicle 3 is a leading vehicle or a trailing vehicle, generates an operation pattern that stops at an outer stop position of a departure signal and starts automatic operation control when the tail-end vehicle is switched to the leading vehicle from the trailing vehicle, and updates the operation pattern to an operation pattern that passes through the outer stop position when information satisfies a predetermined display condition indicating that the display correspondence information included in ground element information received from a ground element is a display that permits passage.SELECTED DRAWING: Figure 1