107 results about "Base line" patented technology

The invention discloses a cable branch box multi-mode cooperative control system and method, and relates to the technical field of power equipment intelligent control, and the method comprises the following steps: injecting a low-amplitude synchronous detection pulse in an operation environment of a cable branch box, collecting a feedback response signal of the detection pulse, inverting an arrival sequence of an interference signal according to the feedback response signal, and carrying out the inversion of the arrival sequence of the interference signal; and constructing a micro time slot interference portrait, and generating a time sequence baseline for an interference identification reference. According to the method, the time sequence base line is established through micro time slot detection, and accurate identification of microsecond interference signals is realized in combination with phase consistency analysis, multi-channel sampling and a cross-cycle evolution model. The false triggering probability is reduced by adopting a phase-locked suppression and delay cache mechanism, and the safe release of peak energy is realized through a phase turn-back amplitude limiting and energy guiding mode, so that the stability and the anti-interference capability of the cable branch box in a complex electromagnetic environment are remarkably improved.

The invention discloses a power transmission line small sample abnormal data generation method and system based on a diffusion model and feature migration, and belongs to the technical field of abnormal detection. The problem that stable and high-fidelity abnormal data can be generated only when the demand quantity of abnormal samples is much larger than that of actually obtained abnormal samples is solved. The method comprises the steps that an abnormal defect library and an equipment main body library are constructed based on defect reference images in a data set and corresponding labels, and the data set at least comprises one defect reference image of each type; training an abnormal defect identification baseline model based on the data set and verifying to obtain a low-quality image; comparing the abnormal defect library and the equipment main body library with low-quality images by using an image comparison technology to obtain an abnormal defect reference image and a base image to be generated; generating a to-be-migrated region mask based on the to-be-generated base map; and based on the to-be-generated base map and the to-be-migrated region mask, using a diffusion model to migrate the abnormal region features of the low-quality image to the to-be-generated base map for anomaly generation. The method is used for generating the small sample abnormal data of the power transmission line.

The invention provides a data exception early warning method and device based on a dynamic threshold model. The method comprises the following steps: firstly, constructing an index time sequence library and an event library for storing index and event information; fusing the historical same-period base line, the trend term and the event influence value and generating a base line through a dynamic weight formula; calculating upper and lower limits of a dynamic threshold by combining the fluctuation acceleration and a basic fluctuation coefficient; and finally, comparing the real-time index value with a threshold range to judge whether to give an alarm, and optimizing the model or updating the event library according to a manual labeling result. According to the method, dynamic and accurate early warning of data exception can be realized, service scene changes can be adapted, the early warning accuracy is continuously improved through feedback optimization, and powerful support is provided for stable service operation and efficient exception disposal.

The invention relates to a towed towed buoy array positioning device and method. The towed towed buoy array positioning device comprises a towed mother ship, and a deck unit is fixedly installed on the towed mother ship; the system further comprises a plurality of dragging buoys which are connected in series through ropes and form a dragging buoy array, the dragging buoy located at the foremost end is connected with the dragging mother ship through the rope, and the whole dragging buoy array is dragged by the dragging mother ship on the water surface to sail. The dragging buoy located at the tail end is arranged in a transverse offset mode, complex installation and calibration are not needed before use, and laying and recycling are convenient; the acoustic measurement sensor is always kept far away from a mother ship and is less interfered by ship body noise, so that the acoustic positioning calculation precision is greatly improved; according to the device, accurate positioning of deep towing is achieved based on the spatial distance intersection positioning principle, the base line of the acoustic measurement sensor array is long, the accuracy advantage of long base line positioning is achieved, no positioning tracking ship is arranged in the method, and compared with a double-ship positioning method, the manpower and material resource cost is reduced through the method.

The invention discloses a fault identification method and system of an intelligent electric meter, and belongs to the field of fault identification of the intelligent electric meter, and the method comprises the following steps: collecting the electric parameter data of a historical electric meter and the power consumption parameter of each electric device, and obtaining the standby power consumption parameter of the electric device; setting standby power consumption base lines in different time periods including working days and rest days, and triggering early warning when the deviation between the real-time power consumption and the base lines exceeds a preset threshold value; performing fault prediction according to the triggered early warning to obtain a specific fault; obtaining an abnormal reason of an abnormal point in the historical electricity meter electric parameter data, carrying out correlation analysis on the historical abnormal point and a predicted fault, obtaining the abnormal reason of the abnormal point with the highest correlation, and taking the abnormal reason as a fault reason after verification and outputting the abnormal reason; according to the invention, through obtaining the ammeter data, the power consumption of each device and the standby power consumption, the personalized baseline is established in combination with different time periods, time and seasons, the abnormality of the ammeter is accurately identified, and fault misjudgment caused by high standby power of the device is effectively avoided.

The utility model discloses a binocular vision assembly with adjustable base line spacing, comprising a track, the track is provided with an upward protruding guide rail and sliding grooves located at two sides of the guide rail, the track is slidably provided with two supports, the supports are in sliding fit with the guide rail, and the guide rail is provided with a base line. An adjusting piece used for adjusting the sliding state of the support is arranged in the sliding groove. One side face of the track is provided with baseline scales used for measuring the distance, and the support is provided with an identification baseline. Binocular cameras with consistent image acquisition directions are mounted on the brackets; the distance adjustment is carried out under the same reference condition, and the accuracy of distance adjustment is met.

The invention discloses a database detection operation method of biological feedback equipment, and relates to the technical field of database detection operation, according to the database detection operation method, in combination with a change data capture CDC technology and a Kafka Streams streaming processing framework, myoelectricity reaction data are collected and cleaned in real time, redundant processing operation of full-amount data is effectively reduced, an incremental calculation algorithm is introduced to process dynamic data, and therefore the dynamic data processing efficiency is improved. The dynamic change of data can be quickly adapted by updating the average value and the standard deviation of the detection base line; meanwhile, a priority grouping mechanism is introduced, high-priority data with large deviation are sorted according to the abnormal amplitude from large to small, and the high-priority data are immediately transmitted to a visualization module for emphasized processing; low-priority data with small deviation is processed in a batch mode according to a detection sequence, and resource allocation and response speed are optimized; and high-priority data generates an exclusive thermodynamic diagram and a tendency diagram through an independent process, and low-priority data is integrated into a grouped thermodynamic diagram and a statistical distribution diagram, so that the intuition and practicability of data interpretation are remarkably improved.

The invention relates to the technical field of robot driving and control, in particular to a robot driving and control integrated system, which comprises a healthy fingerprint base line establishing module for acquiring current and voltage original waveform data of a motor under standard action by using an analog-to-digital converter in a new machine debugging stage of a robot, performing segmented interception on a data stream by adopting a sliding Hanning window function, and establishing a healthy fingerprint base line; and performing orthogonal transformation on each data window by applying a complex primary function, and converting a time domain signal into frequency component superposition. According to the invention, by collecting and analyzing high-frequency current and voltage waveform data in the motor, an electrical fingerprint capable of reflecting a mechanical health state is established, and a driving control system is endowed with a non-intrusive self-sensing capability. According to the method, tiny degradation of the mechanical transmission system can be identified on line, such as early-stage pitting corrosion of a bearing or poor lubrication of a gear, a maintenance mode is converted into beforehand prediction from post-remedy, and the operation reliability of equipment and the overall production efficiency are improved.

The application discloses a manufacturing method of a large-section thin-wall special-shaped steel shell tower segment, which comprises the following steps: first, dividing the segment into several blocks, then manufacturing block components, setting a horizontal base line, a vertical base line and block assembly position lines on an assembly platform, and fixing supporting columns and inclined positioning supports; positioning and fixing outer wall plate units of an inclined straight wall block through the positioning supports; hoisting and fixing outer wall plate units of the remaining straight wall blocks and adjusting the perpendicularity of the outer wall plate units through the supporting columns; hoisting and fixing inner wall plate units corresponding to all the outer wall plate units and adjusting and fixing the inner wall plate units through adjusting struts, and then welding connecting angle steels between the inner wall plate units and the outer wall plate units; hoisting and fixing outer wall plate units and inner wall plate units of the remaining vertical curved wall blocks in sequence through the same method, and welding connecting angle steels between the inner wall plate units and the outer wall plate units; finally, welding blocks to form the segment. The steel shell tower segment is divided into blocks which are easy to assemble, the manufacturing process is simplified, and the production efficiency is improved.

The invention provides a display device and an electronic device. The display device includes: a base layer; pixels, each including a sub-pixel; a demultiplexer; a drive circuit portion; a data line connecting the demultiplexer to the sub-pixel; a data base line connecting the demultiplexer to the driving circuit portion and including a first data base line and a second data base line; a data connection line connected to the data base line and including a first data connection line having a 1-1 data connection line and a 1-2 data connection line and a second data connection line having a 2-1 data connection line and a 2-2 data connection line; a bridge layer including a first bridge layer connected to the (1-1) th data connection line and the (1-2) th data connection line, and a second bridge layer connected to the (2-1) th data connection line and the (2-2) th data connection line; and an intermediate bridge pattern layer connecting the first data base line to the first bridge layer, overlapping the second bridge layer, and having a width greater than a width of the first data base line.

The present application relates to the field of communication radar, in particular to a kind of omnidirectional correlation interferometer real-time direction finding method and system based on spread spectrum signal;Construct omnidirectional antenna array;Utilize radio frequency channel time-sharing switching and receive the array signal of single array plane currently working, obtain baseband signal;A set of fixed base line is distributed to the uniform circular array in the array plane currently working;Based on the pseudo-random code matching the spread spectrum signal generated locally and received, each way of baseband signal is carried out correlation despreading, and the phase difference corresponding to each base line is obtained;The phase difference obtained is input into the phase difference sample library established in advance to carry out matching, calculates similarity function, and the angle stored in the phase difference sample library corresponding to the maximum value of similarity function is determined as the measurement direction angle;The measurement direction angle is carried out data processing, and the optimized measurement direction angle is obtained;The method of the present application has the advantages of full-space coverage, low cost, direction finding precision and tracking precision.

The invention relates to the technical field of communication network security, in particular to a micro-anomaly detection and early risk early warning system for a communication behavior chain, which comprises a communication event acquisition unit used for acquiring discrete API (Application Program Interface) call events from a communication interface, the API call events comprising user identity, time, network address, request type and response state information, and meanwhile, the collected API calling event is transmitted to the behavior chain construction unit. API calling events are analyzed and cleaned in real time through the communication event acquisition unit, and the behavior chain construction unit is combined to aggregate the events in a dynamic time window by taking a user identity as a core to form an exclusive behavior chain, so that a black production is prevented from avoiding detection by replacing an IP (Internet Protocol); the base line learning unit learns historical behavior features by adopting a time sequence model such as LSTM and incrementally updates a normal behavior base line to adapt to user behavior changes, and the micro-anomaly detection unit accurately recognizes tiny deviation through comparison of a multi-dimensional feature vector and a normal feature space and reduces false alarms.

The invention discloses a light and small unmanned aerial vehicle multi-view VR video acquisition and synthesis method, and relates to the technical field of video acquisition and processing, and the method comprises the following steps: obtaining a unified time baseline, building an overlapping boundary time sequence index, locking a zero phase anchor point, and outputting a millisecond-level boundary event sequence; under the constraint of a boundary event sequence, obtaining boundary occlusion priori, constructing a dynamic visibility probability field and marking a potential occlusion kernel; and under the support of a dynamic visibility probability field, acquiring a cross-view delay gradient, applying constraint to a potential occlusion nuclear region, injecting phase traction test to a boundary event sequence, and finishing multi-camera clock fine tuning based on a feedback result. According to the method, the unified time base line and the dynamic visibility probability field are constructed, multi-camera synchronous acquisition and shielding area tracking are realized, a seamless splicing track is generated in combination with clock fine tuning and geometric constraint, black frame skipping is eliminated through luminosity consistency mapping and phase conjugate frame injection, and picture continuity and immersion experience stability are guaranteed.

The invention provides a product data multi-dimensional full-period management method, system and device and a medium, and relates to the technical field of product data management, and the method comprises the steps: constructing a preset module; receiving project configuration information input by a user, calling and executing a corresponding clipping rule from a preset module based on the project configuration information, and dynamically generating a project baseline; on the basis of the project base line, constructing an incidence relation graph between the deliverables, and on the basis of the incidence relation graph and the dynamic Bayesian network, establishing a change influence probability propagation model between the deliverables; when it is monitored that the target deliverable is changed, based on a change influence probability propagation model, quantitative influence values of the change source deliverable on the associated deliverable in quality, progress and cost dimensions are calculated, and a change influence analysis report is generated; and outputting visual results of the project base line, the incidence relation graph and the change influence analysis report. Product data management is realized or assisted through an automatic system, and the management efficiency and effect of the product data are improved.

1. The name of the design product: base line section bar (composite-1). 2. The use of the design product: building decoration material. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: front view.

The utility model relates to novel straddle type monorail three-section track changing equipment which can meet the requirement for efficient track changing of multi-turnout vehicles in a station yard and save space and comprises a bottom plate, a track and a locking device, the track is located on the bottom plate, a walking trolley is located on the track, and a plurality of turnout beams are located on the walking trolley. One end of the turnout beam is provided with a piled beam and a slewing device, the other end of the turnout beam is provided with a plurality of piled beams, a slewing crank arm mechanism is arranged at the bottom of the turnout beam, rollers on the slewing crank arm mechanism do linear motion in a fixed bottom plate and a guide groove in a track, and the slewing crank arm mechanism is driven by a driving device. The method has the advantages that the problem that the vehicle base space is limited is solved, and the requirement for small-space vehicle base route planning is met; signal receiving and safety feedback requirements are met, and the characteristics of linkage interlocking, flexible action, safety, reliability and the like are achieved; narrow space of a parking lot is fully utilized, the structure is compact, and functions are complete; and fourthly, the part design has good manufacturing manufacturability, and the manufacturing cost is favorably controlled.

The invention relates to the field of rod piece butt joint, and discloses a large rod piece butt joint relative pose detection mechanism which comprises a closing component, the closing component comprises a first side ring, a second side ring, a hinge frame and a guide ring, the first side ring is fixedly connected with the guide ring, the second side ring is fixedly connected with the hinge frame, and the first side ring is fixedly connected with the hinge frame. The guide ring is hinged to the hinge frame; two groups of closing parts are arranged; by means of the opening and closing design of the hinge frame and the side ring, rapid installation and cohesion on a large rod piece are achieved; the guide ring is rotated, the bolt is pushed through the arc groove, the supporting rod is driven to abut against the rod piece, stable self-locking of the mechanism is achieved through single operation, and a reliable measuring datum is determined. And finally, high-precision relative pose data can be directly output through a measurement base line established between the fixing frames by the pull rope encoder, so that blindness and low efficiency of manual fine adjustment are fundamentally eliminated, and the precision and efficiency of docking operation are remarkably improved.

A tilt of a head is discerned. Regions of a test pattern include a base line formed in a Y direction with inks ejected from nozzle portions of heads, and blocks formed with inks ejected from nozzle portions provided at intervals from first nozzle portions of the heads in the Y direction. The block is formed on an X1 side of the base line in an X direction orthogonal to the Y direction, and the block is formed on an X2 side.

The invention discloses a manufacturing method of a polishing wheel and the polishing wheel, and relates to the technical field of finishing machining. The manufacturing method of the polishing wheel comprises the following steps: winding the conductive substrate wire on the outer surface of the conductive substrate to form the base wire layer; the base line layer is coated with an insulating layer, and at least two circles of through hole groups which are arranged at intervals are formed in the insulating layer from top to bottom; carrying out electroplating treatment on the conductive substrate with the insulating layer so as to form electroplating salient points in the through holes and obtain a polishing wheel substrate; the insulating layer is removed, mold pressing filling treatment is conducted on the polishing wheel base body, and a polishing wheel body is obtained; and sand planting treatment is conducted on the polishing wheel body, and the polishing wheel is formed. According to the technical scheme, the situation that in the prior art, gaps are prone to failure due to circumferential discontinuity is greatly reduced, and therefore the service life of the polishing wheel is greatly prolonged.

A plastic container (1), in particular for beverages, with an opening (12) through which a liquid can be withdrawn from the container, comprising a base body (14) extending in a longitudinal direction (L) to this opening (12) and a bottom section (2) extending in this longitudinal direction (L) to this base body (14), wherein the bottom section (2) has at least three support feet (4), wherein outer surfaces (4a) of these support feet (4) each form a segmentally ring-shaped support section (20a, 20b, 20c) of the plastic container (1) extending over a predetermined circumferential angle (a1, a2, a3..) and wherein at least three grooves (6) are formed between these support feet, wherein these grooves (6) extend at least also in a radial direction (R) of the plastic container perpendicular to the longitudinal direction (L),wherein these grooves (6) each have a groove base (62) extending at least also in the radial direction (R) and a wall section (64) extending from this groove base (62) at least also to a support section (20a, 20b, 20c) of a support foot adjacent to this groove base (62), wherein the container is formed in one piece and the bottom section (2) has a injection point (18) located inside in a radial direction (R) with respect to the longitudinal direction (L) and the bottom section (2) preferably has a central area (7) surrounding this injection point (18) and a transition section extending from this central area (7) to the base body (14), wherein a geometric bottom line (BL) formed along the bottom section (2),which in a projection along the longitudinal direction (L) forms a circle around the injection point (18) and extends from a base section (20a) fully to this base section (20a) over at least one groove base (62), has a larger radius of curvature in the area of ​​the groove base (62) than in the two laterally adjacent sections (BLa, BLb) of the base line, characterized in that the wall of the container is convex outwards in the area of ​​the groove base (62) and in the area of ​​a geometric center of the groove base (62).

The invention discloses a rate control method and device, a communication node, a storage medium and a product. The rate control method comprises the following steps: acquiring the current time delay and the current throughput of a second communication node; processing the current time delay, the current throughput, the current time delay base line and the current throughput base line through a two-factor joint judgment model, and determining a control instruction; under the condition that the control instruction indicates rate control, target node information is determined, and the target node information indicates a communication node of which the transmission rate needs to be adjusted; and transmitting the control instruction and the target node information to a third communication node. According to the speed control method provided by the invention, the speed control accuracy is improved.

The invention relates to the technical field of suspension bridge main cables, in particular to a method for erecting a continuous type suspension bridge main cable reference strand with an anti-sliding shear key, the reference strand is made of full-high-precision standard wires, and a continuous full-length type cable manufacturing mode is adopted. Comprising the following steps that S1, starting point mark points and terminal point mark points of all standard wires of a reference cable strand are aligned; s2, shear keys are fixedly installed at the span points of the reference cable strand, and the shear keys are matched with reserved notches of the cable saddle; s3, temporary fixing is conducted on the base line length marking position of the reference cable strand, and the reference cable strand is wound with a wrapping tape; and S4, temporary fixation is removed, the steel wires in the strands freely slide, and after the cable strands are stressed, the standard cable strands are erected with the average length naturally formed after standard wire length self-adaption as the length of the standard cable strands. According to the erecting method, the intra-strand error is effectively reduced, high-precision erecting can be achieved only by aligning the shear keys with the notches on site, sag adjustment is not needed, and the construction efficiency is improved.

Systems and methods for detecting adversarial artificial intelligence attacks are provided, including identifying a base state having a highest probability amplitude from an output quantum state; performing quantum amplitude amplification on the identified base state based on the output quantum state; for each row in the baseline quantum state lattice matrix, performing quantum amplitude amplification on a base state similar to the identified base state based on the quantum state generated for the row; marking a quantum amplified base state for each of the rows of the line quantum state lattice matrix that exhibits a certain degree of similarity to the quantum amplified identified base state; and determining that the acquired input data includes an artificial intelligence adversarial attack when the reference truth input associated with each of the tagged, quantum amplified base states exhibits a certain degree of dissimilarity from the acquired input data.

The invention discloses a shoe middle and rear upper gluing process. The process comprises the following steps that 1, a scriber draws a glue wiping base line on a shoe midsole along the edge of the shoe midsole according to the preset inward shrinkage amount; 2, fixing a shoe insole to a shoe tree and then fixing the shoe insole to a middle and rear upper forming machine; step 3, instructing a middle and rear upper forming machine to establish a frictioning track by the frictioning base line; 4, the middle and rear upper forming machine conducts glue wiping according to the glue wiping track, and the vamp and the shoe insole are subjected to upper bonding and fixing. Therefore, the frictioning track is established by referring to the frictioning base line pre-drawn on the shoe insole, so that the sampling position for establishing the frictioning track is consistent with the actual frictioning position, the accuracy of establishing the frictioning track is improved, relying on visual inspection is not needed, and the convenience of establishing the frictioning track is improved.

The utility model relates to the technical field of wear-resistant fabrics, in particular to a wear-resistant polyester fabric, which comprises a base line group, a plurality of first base lines and a plurality of second base lines, and the first base lines and the second base lines are arranged at intervals along a first direction; the wear-resistant wire group is provided with a plurality of first wear-resistant wires and a plurality of second wear-resistant wires, and the first wear-resistant wires and the second wear-resistant wires are arranged at intervals in the second direction; the flexible line group is provided with a plurality of first flexible lines and a plurality of second flexible lines, and the first flexible lines and the second flexible lines are arranged at intervals in the second direction; the first side surface and the second side surface are parallel to a plane formed by the first direction and the second direction, and the first side surface and the second side surface are respectively positioned on two sides of the base line group. The utility model relates to a wear-resistant polyester fabric which has wear resistance and can be preferably used for tailoring and sewing and clothes using the fabric.

The invention discloses a nuclear pulse signal processing method, system and device and a medium, and relates to the technical field of signal processing.The method comprises the steps that nuclear pulse signals are collected, and deconvolution processing is conducted on the nuclear pulse signals; setting a threshold value for the signal after deconvolution processing, and when the threshold value is triggered, marking N sampling points before the triggering moment and M sampling points after the triggering moment to obtain a signal data segment; parallelly and synchronously caching the deconvolution processed signal in real time, and replacing data of a signal data segment part of the cached signal with a baseline average value to obtain a forming baseline of the signal; after the threshold value is triggered, the forming base line is copied in parallel and synchronously, the currently-triggered signal data segment is recovered to the corresponding position of the forming base line, and a forming data segment is generated; performing forming processing on the formed data segment to obtain a nuclear pulse signal after the dead time is reduced; according to the method, accumulated pulses are processed in parallel and are synchronously and respectively formed without mutual interference, so that dead time is avoided.

The invention relates to the field of green power transaction, and discloses a wind power plant green transaction centralized bidding, quantity reporting and quoting method and device and computer equipment, which can input bidding related data of a wind power plant into a constructed trading volume price model for trading volume price prediction. And obtaining a trading volume price base line and a trading volume price optimal line output by the trading volume price model. Wherein the bidding related data at least comprises a government supportability electricity price. And determining the final declaration price of the wind power plant according to the government supportability electricity price and a set quotation strategy. Based on the final declaration price and the trading volume price base line, determining a volume declaration base line value of the wind power plant; and based on the historical trading price interval and the trading volume price optimal line, determining a preliminary reporting interval of the wind power plant. And determining a final quantity reporting interval of the wind power plant according to the quantity reporting base line value and the initial quantity reporting interval of the wind power plant. According to the invention, the determination efficiency of the wind power plant green transaction centralized bidding quotation quantity reporting data can be improved.

The embodiment of the invention discloses a CPU load monitoring method based on dynamic compensation for satellite-borne network equipment. The method comprises the following steps: acquiring a first baseline and a second baseline when a load calculation cycle is started; respectively executing the following operations in each load calculation period: dynamically determining a baseline observation window according to the current CPU temperature, and extracting a data packet-free time period in the baseline observation window; dynamically updating the first base line of the current period according to the first base line during starting and the DPDK cycle number in the data packet-free time period; preliminarily determining the CPU load rate of the current period according to the first base line of the current period, the second base line and the DPDK cycle number in the current period; and compensating the preliminarily determined CPU load rate according to the current temperature and space radiation to obtain the actual CPU load rate of the current period. The embodiment of the invention has the advantages of small error, high reliability and less resource consumption.

The invention discloses a VBA-based Excel automatic data difference analysis and processing method, and relates to the technical field of rail transit software baseline restriction list data, and the method comprises the following steps: S1, clearing the format and content of an ACPreviusBaseline table; s2, the format and the content of an AClatestBaseline table are cleared away; s3, comparing the limit analysis table of the last round with the limit list of the latest software baseline in combination with the VBA macro, judging the change type of each limit through difference analysis, and carrying out difference processing on different change types; s4, carrying out difference analysis to judge no change and limited change types and carrying out difference processing on the change types and the limited change types; s5, reversely traversing the old base line, analyzing and judging the type of the base line before the base line is deleted, and processing the base line; and S6, an analysis and processing result is output by the AClatestBaseline table. According to the invention, through an automatic comparison process, the original time consumed by several hours for manual check one by one is shortened to a minute level, and the efficiency is improved by more than 90%.

A steel cord with a 1×4 structure in which four base wires are twisted, wherein the base wires have a base wire diameter greater than or equal to 0.15 mm and less than or equal to 0.20 mm and wherein an effective cross-sectional area greater than or equal to 0.099 mm² 2 and less than or equal to 0.224 mm 2 is, wherein the effective cross-sectional area is defined as the area of ​​a composite region, which is a region in the cross-section of the steel cord when it is embedded in rubber, wherein the cross-section is taken perpendicular to a longer direction of the steel cord and the region is enclosed by tangents common to adjacent base wires and in contact with an outer surface of the steel cord, and by line segments connecting the midpoints of the base wires adjacent along the outer surface of the steel cord.