562 results about "Ground line" patented technology

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 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.

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 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 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.

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 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.

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.

The invention provides a tumor electric field treatment system, an electrode slice temperature detection method and an electrode slice overtemperature detection method, the system comprises an electrode slice and a controller, the electrode slice comprises a flexible circuit board and a plurality of electrode units which are arranged on the flexible circuit board and are arranged on a circuit in multiple rows and multiple columns, and each electrode unit is provided with a dielectric element and a temperature sensor. The flexible circuit board is provided with a plurality of grounding wires and a plurality of dual-purpose signal wires, each grounding wire is in short circuit connection with the grounding ends of the temperature sensors in the corresponding row, and each dual-purpose signal wire is connected with the dielectric elements of the electrode units in the corresponding column and the signal ends of the temperature sensors. And the controller controls the dual-purpose signal line electrically connected with the target electrode unit to switch to access an alternating current signal or a direct current signal so as to apply the alternating current signal to the target electrode unit or collect the temperature of the target electrode unit.

According to one aspect of the present disclosure, a display device includes: a substrate including an active area in which a plurality of pixels are defined and a non-active area extending from the active area; one or more pixel driving circuits disposed in the active area; a plurality of micro LEDs disposed in the plurality of pixels and electrically connected to the pixel driving circuit; a plurality of power lines disposed in the non-active area and electrically connected to the pixel driving circuit; and ground lines disposed between the plurality of power lines, and different power signals are applied to the plurality of power lines. Accordingly, the ground line is provided between the plurality of power lines to which different power signals are applied, so as to minimize an electric field between the plurality of power lines.

The invention relates to a notch filter for wireless circuitry. In particular, the wireless circuitry may include one or more notch filters. The notch filter circuit may include a series inductor having a first terminal coupled to an input and having a second terminal coupled to an output; a first series capacitor having a first terminal coupled to the input and having a second terminal coupled to a node; a second series capacitor having a first terminal coupled to the output terminal and having a second terminal coupled to the node; and a shunt resistor having a first terminal coupled to the node and having a second terminal coupled to a ground line. The notch filter may also include a shunt capacitor coupled in series with the shunt resistor located between the node and the ground line. The shunt resistor may be an adjustable resistor.

The invention relates to the technical field of cable working wells, in particular to a cable working well state monitoring method and system. The cable working well state monitoring method comprises the steps that a monitoring device is established in each cable working well, and each monitoring device comprises an electric power Internet of Things gateway, a monitoring device body and an intelligent well lid; setting one of the power Internet of Things gateways as a master gateway, setting the other power Internet of Things gateways as slave gateways, establishing communication between the master gateway and all the slave gateways, and establishing communication between the master gateway and all the intelligent well lids; and establishing communication among the main gateway, the property management platform and the operation and maintenance terminal, and monitoring all state information through the property management platform. According to the cable working well state monitoring method, the operation state and trend of the cable joint can be effectively evaluated, the workload of cable operation maintenance personnel is reduced, cable accidents are reduced, the risk that a grounding wire, a cross interconnection box, a grounding box and the like are stolen is reduced, and the quality of a power cable and reliable operation of a power system are guaranteed.

An electrical connector includes first electric wires, second electric wires, a housing and a ground plate. The first electric wires include first signal lines and first ground lines. The second electric wires include second signal lines and second ground lines. The housing includes first and second holding portions. The ground plate includes a plate main body placed between the first electric wires and the second electric wires. The first holding portion holds each conductor at each tip end portion of the first electric wires, and the second holding portion holds each conductor at each tip end portion of the second electric wires. The ground plate includes a first connector extending toward and connected to each conductor of the first ground lines from the plate main body, and a second connector extending toward and connected to each conductor of the second ground lines from the plate main body.

A probe card includes a plurality of power lines that are electrically connected to the plurality of DUTs, a plurality of ground lines that are electrically connected to the plurality of DUTs and to each other, and a plurality of power compensation circuits that are electrically connected to respective ones of the plurality of power lines and respective ones of the plurality of ground lines, where the plurality of power compensation circuits are configured to generate and provide a plurality of compensated power supply voltages to the respective ones of the plurality of power lines, and where the plurality of compensated power supply voltages are configured to inhibit a variation of a ground voltage of the respective ones of the plurality of ground lines.

An image forming apparatus includes a toner storage container, a mounting portion, a detection mechanism, and a control portion. The detection mechanism has a detection circuit including a first contact spring, a second contact spring, a first ground line, a signal line, a second ground line, a power supply, and a detection board. The first and second ground lines together with the first contact spring form a loop circuit that loops across a ground path on the detection board. The detection board detects as a detection signal the voltage applied from the power supply to the signal line and detects as a connection signal the voltage applied from the power supply to the loop circuit. The control portion detects the contact state of the detection circuit based on the connection signal before detecting the toner container mounted in the mounting portion based on a change in the detection signal.

The utility model discloses a partial discharge on-line comprehensive monitoring device comprising a device main body, a monitoring host is positioned at a rear position in the device main body, and the monitoring host is provided with a short circuit grounding sensor, a high voltage live sensor, a locking alarm mechanism, an antenna, a grounding wire, a communicator and a working power supply. The high-voltage electrified sensor is connected with a coupling sensor, a coaxial line is connected between the high-voltage electrified sensor and the coupling sensor, the locking alarm mechanism is connected with a power supply input port, an electromagnetic lock and an alarm signal output interface, and the communicator is connected with a shielding line. According to the partial discharge on-line integrated monitoring device of the utility model, a high-voltage sensor matched with an original live display of a ring main unit is used as a front coupling sensor of a pulse partial discharge integrated monitoring instrument, so that partial discharge signals can be rapidly captured, partial discharge types can be accurately analyzed, and partial discharge positions can be accurately positioned.

The utility model discloses a low-voltage fire-resistant control cable for a fire-fighting system, which comprises a sheath, a flame-retardant belt is fixedly arranged on the inner side of the sheath, a single-sided aluminum foil is fixedly arranged on one side of the flame-retardant belt far away from the sheath, an area is formed between one side of the single-sided aluminum foil and the flame-retardant belt, a grounding wire is arranged in the area, and a plurality of insulating wires are arranged in the single-sided aluminum foil. A conductor is arranged in the insulated wire and is a single-core pure copper conductor, the sheath is composed of two half sheaths, each half sheath comprises a base layer, the base layer is made of a flame-retardant ceramic low-smoke halogen-free sheath material, a flame-retardant layer is fixedly arranged on the outer side of the base layer, an insulating layer is fixedly arranged on one side, far away from the base layer, of the flame-retardant layer, and the flame-retardant layer is made of a flame-retardant ceramic low-smoke halogen-free sheath material. According to the utility model, the problems that the production efficiency is low, the cost is high, and the fireproof performance is easy to damage when the cable is bent due to the fact that mica tape wrapping is adopted in the traditional fireproof cable technology are solved.

A wiring board includes a wiring layer, a shield layer, and an insulating layer. The wiring layer includes at least one signal line and at least one ground line. The shield layer overlaps the wiring layer in plan view. The insulating layer is provided between the wiring layer and the shield layer. The insulating layer includes at least one end portion surrounded by the insulating layer. The at least one end portion is located on at least the at least one ground line. A connection conductor line electrically connecting the shield layer to the at least one ground line is provided on part of the at least one end portion.

The invention provides an electrode plate, a tumor electric field treatment system and an electrode plate quality detection system and method.The electrode plate comprises a plurality of electrode units and a plurality of temperature detection units which are configured into a plurality of row groups and a plurality of column groups in circuit connection, and the electrode units located in the same row group are connected in parallel; the temperature detection units in the same row group are connected in series, the electrode units and the temperature detection units in the same row group are connected with the same dual-purpose signal line, the temperature detection units in the same column group are connected with the same grounding line, and the dual-purpose signal line is configured to be switched to be communicated to a temperature sampling point or an alternating power line. Therefore, (1) under the condition that the dual-purpose signal line is communicated to the temperature sampling point, the grounding lines are configured in sequence to be grounded, so that the temperature detection signals in the temperature detection units in the corresponding row groups are sampled respectively; and (2) under the condition that the dual-purpose signal line is communicated to the alternating power line, applying an alternating electric signal to each electrode unit of the corresponding row group.

The application provides an insulation state on-line monitoring device of a lightning arrester, and relates to the technical field of lightning arrester leakage monitoring.The device comprises a sensor module, at least including a voltage sensor and a current sensor, the voltage sensor obtains the voltage value on the lightning arrester through electric field coupling with the lightning arrester, and the current sensor is sleeved on the grounding wire of the lightning arrester and is used for collecting the current value leaked by the lightning arrester; a circuit protection module is connected in series with the current sensor; a data processing module is connected in communication with the voltage sensor and the current sensor respectively, is used for obtaining the insulation resistance value of the lightning arrester according to the voltage value and the current value, and determines the insulation state according to the insulation resistance value.The application can obtain the voltage value and the leaked current value of the lightning arrester by using a non-contact collection mode, reduces the influence of interference signals on the voltage value and the current value, and provides technical support for obtaining the accurate insulation state of the lightning arrester.

The invention relates to the field of electric power safety operation equipment, in particular to the field of a ground wire hanging and detaching electric storage device and a ground wire automatic storage control method.The ground wire hanging and detaching electric storage device comprises a winding drum, baffles are arranged at the two ends of the winding drum, and the two baffles and the winding drum jointly form an axis space used for winding a wire; the first wire clamp is connected with one end of the wire, and the first wire clamp is used for being in lap joint with electrified equipment; the second wire clamp is connected with the other end of the wire, and the second wire clamp is used for being connected with the ground; the motor drives the axis to rotate, so that the wire is accommodated in the axis space; the remote controller is in communication connection with the motor through a communication module and is used for remotely controlling the starting state of the motor, and the electrical control module receives a signal of the communication module and analyzes the signal to generate a motor driving instruction, so that remote control automatic winding and releasing of a grounding wire can be realized. And the operation safety, the standardization and the working efficiency are improved.

The invention relates to a protection apparatus (1) for protecting a hybrid electrical device (M) configured to be electrically connected to an LVDC network and an HVDC network, the protection apparatus (1) comprising: a first connector (C1) configured to be connected to the LVDC network; a second connector (C2) configured to be connected to the hybrid electrical device (M), the second connector (C2) being connected to the first connector (C1) by a power line; a third ground connector (C3) connected to the power line at a connection point (CX) by means of a ground line, the protection device further comprising: at least one first diode (D1) reversely mounted on the ground line between the connection point (CX) and the third ground connector (C3); and at least one first fuse (F1) mounted on the power line between the connection point (CX) and the second connector (C2).

The application 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, which comprises the following steps: collecting a high-frequency current signal on a cable grounding wire, extracting a power frequency phase, a discharge amplitude and a pulse band width, and performing normalization processing to obtain a sample set; calculating a local sparsity adaptive factor of each sample point, and calculating an energy-weighted local density of each sample point; calculating a relative distance of each sample point, constructing a decision value, and determining a sample point with a larger decision value as a clustering center; calculating a path transmission reliability of a non-clustering center sample point relative to each clustering center, distributing a sample point with a path transmission reliability meeting a preset condition to a corresponding clustering center, and marking the sample point as noise if the preset condition is not met; extracting statistical features according to separated discharge clusters, and evaluating the insulation state of the cable by using a preset fault diagnosis rule library. The application can improve the accuracy of cable insulation state evaluation.