1135 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.

The invention discloses a cable defect detection device and method. The detection device comprises a high-frequency current sensor, a signal acquisition module, an algorithm analysis module, a high-frequency pulse detection module and a fault diagnosis module, the high-frequency current sensor is used for detecting a current pulse signal on a cable grounding wire, converting the current pulse signal into a voltage signal and transmitting the voltage signal to the signal acquisition module; the signal acquisition module is used for amplifying, filtering and detecting the voltage signal; the algorithm analysis module is used for carrying out feature extraction and analysis on the processed voltage signals and carrying out feature classification and clustering on the voltage signals; the high-frequency pulse detection module is used for carrying out noise reduction processing on the voltage signal and extracting the voltage signal representing the partial discharge defect of the cable; and the fault diagnosis module is used for determining the type and degree of the cable defect according to the voltage signal representing the partial discharge defect of the cable and historical data. Cable line faults are rapidly judged, and the reliability of a power supply system is improved.

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.

A power feeding device that is connected to a Faraday cage containing a flight vehicle via a conductor and supplies lightning power generated from a lightning surge that has struck to a battery of the flight vehicle, and a ground line that connects the power feeding device and a ground surface are provided, the power feeding device includes a capacitor connected in series between the Faraday cage and the ground line, a lightning arrester connected in parallel to the capacitor, and a step-down converter that steps down a terminal voltage of the capacitor charged by the lightning surge to generate lightning power and supplies the generated lightning power to the battery.

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 an electrode slice temperature detection method and an alternating current signal application method for tumor treatment. According to the method, a direct-current electric signal is transmitted to a dual-purpose signal line of an electrode plate, and grounding wires are sequentially conducted in a time-sharing manner, so that temperature detection signals detected by temperature sensors are acquired line by line. The dual-purpose signal wire and the grounding wire of the electrode plate are controlled in a combined mode to collect the temperature detection signals detected by the temperature sensors, the temperature can be comprehensively and accurately monitored, the number of conductive traces is effectively reduced, and efficient and accurate electrode plate control is achieved. In addition, alternating current electric signals applied to the dielectric elements of the electrode plate can be controlled or adjusted according to the collected temperature detection signals, low-temperature scalding can be avoided, and the use safety of the electrode plate is 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 invention relates to a digital active EMI filtering method and circuit based on square wave analysis and reconstruction, and the method comprises the steps: obtaining common-mode noise source waveform data of a Buck circuit; determining compensation capacitance parameters according to a compensation circuit equivalent model, and generating compensation voltage data reduced by the common-mode noise source waveform data in an equal ratio; synchronously outputting PWM and the compensation voltage data through a synchronous control mechanism, and injecting the PWM and the compensation voltage data into a ground wire; and measuring the time delay between the PWM output signal and the DAC output signal, and reconstructing the compensation voltage data to carry out time delay compensation. By adopting the digital active EMI filtering method and circuit based on square wave analysis and reconstruction provided by the invention, time delay can be eliminated and common-mode EMI noise can be reduced while no detection is realized, the cost is reduced and the size is reduced.

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.

At least one embodiment of the present disclosure provides a memory array, an electronic device, and an operation method for a memory array. The memory array comprises a plurality of non-volatile static memory storage units, a plurality of power lines, and a plurality of ground lines. The plurality of non-volatile static memory storage units are arranged into a plurality of rows and a plurality of columns and are configured to perform data storage and data backup and recovery. The plurality of power lines are configured to provide the plurality of non-volatile static memory storage units with a first power supply voltage, the plurality of power lines each being electrically connected to a corresponding column of storage units in a first direction, and the plurality of power lines being shorted in a second direction. The plurality of ground lines are configured to provide the plurality of non-volatile static memory storage units with a second power supply voltage, the plurality of ground lines each being electrically connected to a corresponding column of storage units in the first direction, and the plurality of ground lines being shorted in the second direction. According to the described memory array, when data recovery is performed in one row of storage units at the same time, the voltages of the power lines can be kept stable.

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 method of performing a camera to ground alignment for a camera system on a vehicle. The method includes determining if enabling conditions have occurred and estimating a location of a vanishing point in a source image. Ground lines are selected based on a source image. A lane line detection is performed based on clustering of the ground lines to determine lane lines in the source image. At least one of pitch, yaw, or roll of the vehicle are estimated from the source image. A cost function based on estimates of pitch, yaw, and roll is minimized to obtain an optimal pitch value, an optimal yaw value, an optimal roll value, and lane lines from the source image. A sliding window-based refinement is performed on source images. Alignment results are broadcast to a downstream application or it is determined if the camera system on the vehicle is misaligned.

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.

A sensor device includes touch sensing electrodes, traces extending from the touch sensing electrodes, touch sensor pads connected to the traces, an antenna unit disposed adjacent to the touch sensing electrodes and including a radiator, a transmission line connected to the radiator, and ground lines extending around the transmission line, and antenna pads forming a pad row together with the touch sensor pads, and including a signal pad connected to the transmission line and ground pads connected to the ground lines.

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.

The invention discloses an engineering geological profile map generation method and system, and the method comprises the steps: constructing a profile map data model, and enabling a left boundary, a right boundary, a bottom boundary and a terrain line projection of the profile map data model to form a closed two-dimensional region; acquiring profile data according to the two-dimensional surface domain; performing entity space calculation based on the profile data, the topographic data and the exploration data to obtain an actual three-dimensional shape of a profile line; and performing data calculation based on the actual three-dimensional shape of the section line and the exploration data so as to draw and generate an engineering geological section map. According to the method and the device, unitized segmentation of data of each stratum can be realized, a standardized profile map data model is constructed, and completeness analysis of the stratum data of the profile map is realized; the problems that in engineering geological section drawing, a ground line does not conform to the actual terrain, the stratigraphic curve crossing phenomenon is serious, stratigraphic data cannot be perfectly segmented, and the result stability is poor are solved.

Antennas having single or parallel printed circuit board-based feed stalks and base station antennas having such radiating elements. The single feed stalk can have two feed lines configured to feed radio frequency signals to respective dipole radiators. Each feed line can have twin ground lines on one side (primary surface) of the single feed stalk printed circuit board and a cooperating feed trace on an opposing side (opposing primary surface) that provide RF transmissions from a feed network to a dipole radiator. The twin ground lines for the first feed line can be on a different primary surface than the twin ground lines for the second feed line and one ground line of each twin line set can cross-over each other at a forward end portion of the feed stalk. The parallel feed stalk printed circuit board can provide two feed lines for a respective dual polarized radiating element.

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.