59 results about "Weak line" patented technology

A foldable data card assembly is disclosed. The assembly is a sheet which has a base portion and a first and second lateral portion which extend from the base portion. The second lateral portion folds toward the base portion to a stowed position, while the first lateral portion folds toward the base portion and the stowed second lateral position to a covering position. A first and second line of weakness cross at least the base portion and first lateral portion and an adhesive is disposed between the lines of weakness and the edge to seal the assembly. The assembly is opened by removing tearing away portions of the sheet above and below the lines of weakness to remove the portions of the sheet which were adhered together. The assembly may then be opened to gain access to the second lateral portion which contains information relating to a data card.

A reverse acting rupture disc is provided having a laser defined electropolished line-of-weakness recess, and an improved method of forming an electropolished line-of-weakness recess in a reverse acting rupture disc that assures full opening of the disc upon reversal. A rupture disc blank is pre-bulged, final bulged, and then provided with a layer of resist material. A laser is used to remove at least a portion of the layer of resist material corresponding to a desired line-of-weakness recess in the concave face of the bulged rupture disc. The disc is then subjected to an electropolishing operation to remove metal from the lased area of the rupture disc, thereby forming a lustrous polished line-of-weakness recess in the disc of desired configuration and of a predetermined depth that is related to material thickness. The electropolished line of weakness is defined by spaced opposed channel portions separated by a central raised crown portion wherein the channel portions are of greater depth than the crown portion. The burst/reversal pressure of the disc having an electropolished line-of-weakness recess may be selectively controlled by varying the pre-bulging pressure on the disc.

A method of identifying voltage instability in a power system via identification of a weakest line and bus that contribute to the collapse of the system is provided. The method includes periodically calculating an extended line stability index for the transmission lines monitored in the power system; and using the extended line stability index to determine the distance of an operation state in the power system from a collapse point of the system caused by voltage instability.

A method for weakening a portion of a web includes moving a web in a machine direction between at least a first location and a second location, wherein the second location is positioned downstream of the first location, forming a line of weakness in the web at the first location, wherein the web has a first tensile strength across the line of weakness, and weakening the line of weakness at a second location, wherein the web has a second tensile strength across the line of weakness after the line of weakness is weakened at the second location and wherein the first tensile strength is greater than the second tensile strength.

A method for identifying weak line of large-scale power system includes defining line electric inductivity with weighting of the line to be load sum bore on and passed through shortest electric path between power generator and load in system then revising said path by raising electric inductivity index of line in power system to be maximum electric inductivity value of electric inductivity on all lines adjacent to said path.

The invention discloses a road border detection method based on an infrared image, comprising the following steps: converting an input image into an image with specific scale and size by proper pretreatment; selecting a line segment more than a certain length under each threshold value by a threshold value exhaust algorithm; analyzing the line segment to obtain an accurate gradient; removing a second-order differential operator to obtain a weak line segment; removing a pseudo line segment obtained by the threshold value exhaust algorithm via the second-order differential operator; mutually combining two line segments to jointly extract the border line segment; and finally, obtaining a final road border according to a road border model. With the method, the road border can be accurately and uninterruptedly detected day and night, the method has the advantages of high instantaneity and robustness, and is easy to popularize to application fields of intelligent robot navigation, the active safety of automobiles, video monitoring and the like.

The invention relates to an electric power system line weakness evaluation system and method based on multi-attribute analysis. The system comprises an EMS information obtaining module, a line topology importance degree calculation module, a line correlation coefficient calculation module, an economic loss calculation module, a hidden failure rate calculation module, a line integral weakness calculation module and a weak line screening module. The method comprises the following steps of obtaining trend information and historical information of each line in an electric power system; obtaining the topology importance degree index of each line, the correlation coefficient index of each line, the hidden fault rate index of each line and the economic loss index of each line due to line breaking according to the trend information and the historical information of the line; building an integral weakness index function; performing calculation by using the topology importance degree index, the correlation coefficient index, the economic loss index and the hidden fault rate index of the line as input data of the integral weakness index function to obtain the integral weakness index of each line; and obtaining the weak line in the electric power system through setting the critical weakness index.

A learning method for detecting at least one lane based on a convolutional neural network (CNN) is provided. The learning method includes steps of: (a) a learning device obtaining encoded feature maps, and information on lane candidate pixels in a input image; (b) the learning device, classifying a first parts of the lane candidate pixels, whose probability scores are not smaller than a predetermined threshold, as strong line pixels, and classifying the second parts of the lane candidate pixels, whose probability scores are less than the threshold but not less than another predetermined threshold, as weak lines pixels; and (c) the learning device, if distances between the weak line pixels and the strong line pixels are less than a predetermined distance, classifying the weak line pixels as pixels of additional strong lines, and determining that the pixels of the strong line and the additional correspond to pixels of the lane.

The invention provides a weak lien spectrum object passive detection method based on an array. The method comprises a step 1 of obtaining frequency spectrums of signals received by each array element; a step 2 of obtaining a frequency orientation output matrix form; a step 3 of obtaining a matrix PT; a step 4 of forming a spatial spectrum output value; a step 5 of determining the orientation of a detection object; a step 6 of obtaining a line spectrum object; and a step 7 of determining whether a frequency spectrum curve has a line spectrum or not. The method is applied to the field of weak line spectrum object passive detection, and solves problems that a conventional beam forming (CBF) technology does not have detection advantages for a line spectrum object, a CBF line spectrum detector requires four-dimension display, is not visual and not favorable for observation, and many methods which do not require four-dimension display require statistics in the array signal processing field.

The invention relates to the technical field of screens, in particular to a high-precision silver grid line screen production method for crystalline silicon solar cells. A screen fabric is formed by weaving a plurality of warps and wefts; each warp and each weft are parallel to or perpendicular to a screen frame respectively; adhesive is coated on the periphery of the screen fabric; and the screen fabric is fixed on the inner side surface of the screen frame after being tightened to form a screen. The high-precision silver grid line screen production method for the crystalline silicon solar cells solves the problems of low screen strike through rate and weak line resolution in the conventional silk screens, reduces break points generated when printing grid lines on crystalline silicon solar cell chips through thoroughly eliminating screen knots in strike through areas, and furthest improves the aperture opening ratio of the silk screens to realize the target of aspect-ratio fine line printing.

A reclosable package includes a tray, a top sheet, and a fastener. The tray has a well for receiving contents and a peripheral flange surrounding the well. The top sheet is attached to the peripheral flange. The fastener has two interlocking members, one attached to the peripheral flange and the other attached to the top sheet. A tamper-evident feature located on the package prevents access to the fastener and is connected thereto by one or two lines of weaknesses. In one embodiment with one or two lines of weakness in the top sheet, the fastener remains adjacent to the tray's peripheral flange, which is intact after the tamper-evident feature is removed by tearing along these lines of weakness. In a second embodiment with two lines of weakness, the tamper-evident feature, comprised of portions of the peripheral flange and the top sheet, is torn from the package along both lines of weakness.

The invention relates to a prefabricated concrete structure architecture electric pre-buried laying method which comprises construction of a prefabricated slab, construction of a prefabricated wall, and construction of a top plate cast-in-place layer, wherein a weak current communication line tube, a socket pipe line return circuit and an air conditioning socket pipe line return circuit are arranged inside the prefabricated plate; and a lighting return circuit line pipe and a main line pipe are arranged in the top plate cast-in-place layer. According to the prefabricated concrete structure architecture electric pre-buried laying method, the number of line pipes laid in the cast-in-place layer is reduced; according to the method, through regulation of procedures, reasonable arrangement is carried out on strong and weak line pipes, the arrangement of pre-buried line pipes is guided into the industrialization field, construction efficiency is improved, manual investment is reduced, and construction quality is improved; and optimization design is also carried out on node connection of a prefabricated part and a cast-in-place part, cost is reduced, and production efficiency is improved.

The invention discloses an automatic detection and extraction method for low and medium frequency line spectrums in ship radiation noise. The method comprises: acquiring signals; accumulating frequency spectrums at multiple moments; smoothing the accumulated frequency spectrum; carrying out smoothing item removal on the logarithm decibel spectrum; extracting line spectrum; if the line spectrum ishigher than the line spectrum threshold H, reserving the line spectrum, otherwise, removing the line spectrum; and carrying out traversal comparison on amplitudes of all frequency points of the frequency spectrum to obtain a final line spectrum extraction result. According to the method, the line spectrum characteristics of the target ship can be automatically detected and extracted by collectingand analyzing the radiation noise of the ship. The method is suitable for weak line spectrum detection under the condition of low signal-to-noise ratio and non-low signal-to-noise ratio, has obvious advantages compared with an existing line spectrum detection method, effectively improves the target feature automatic extraction capability, optimizes the underwater sound target recognition effect, and improves the intelligent level of underwater sound equipment.

The invention relates to an underwater glider platform based cross array line spectrum target passive detection method. Thus, the problems of close underwater weak line spectrum target detection distances of existing underwater glider platforms can be solved. The processes of the method are as follows: 1, carrying a cross array hydrophone and a compass auxiliary system on an underwater glider so that two sets of segmentation cross-spectrum results can be obtained; 2, obtaining the long integral cross-spectrum superposition result of a virtual array corresponding to each set; 3, judging whethera target exists, measuring target line spectrum frequencies if yes, and showing that a line spectrum target is not detected if no; 4, respectively measuring the subarray azimuth formed by first and third array elements and second and fourth array elements in a cross array relative to the target; 5, obtaining the horizontal azimuth of the x-axis direction of the cross array relative to the target;and 6, obtaining the geodetic coordinate true orientation of the underwater glider platform relative to the target. The method is used for the field of line spectrum target passive detection.

The invention relates to a repairing method for a common electrode line of a liquid crystal display panel and at least includes the following steps: first, the liquid crystal display panel is checked so as to look for a breaking place of a first common electrode line; then an information line is cut off to form a jumper which crosses the first common electrode line and a second common electrode line which is adjacent to the first common electrode line; and then, a laser welding process is operated to electrically connect the jumper with the first common electrode line and the second common electrode line. Furthermore, the method also provides a structure of the liquid crystal display panel after repairing which leads the liquid crystal display panel to display images without having weak lines, thus enhancing the manufacturing yield rate of the liquid crystal display panel.

The invention discloses a method and system for acquiring power receiving capacity of a regional power grid and belongs to the technical field of electric power systems. The method comprises the stepsof determining the most serious fault and the weakest line of a regional power grid system: calculating the ratio of the power on the weakest line to the maximum power of the line after in the initial state of the regional power grid, the most serious fault occurs, causing transfer of power flow; determining the maximum power receiving capacity of the regional power grid to be m times of the initial receiving power; 1.1, adjusting the power flow of the regional power grid; 1.2, determining the most serious fault and the weakest line; 1.3, performing time domain simulation on the fault and checking whether the regional power grid system is unstable or not; and 1.4, acquiring the maximum power receiving capacity of the regional system. According to the method and the system in the invention, the ratio of a power flow transfer value caused on other lines after the fault of a certain line of the regional system power transmission section in different states to the maximum power transmission power of the line is given, a line fragile factor is obtained, and the most serious fault and the weakest line of the system can be determined according to the size of the line fragile factor.

The invention discloses a method for constructing a growth and evolution model of a two-voltage-level power grid. The method comprises the steps of: simulating annual load increase and power injectionof a superior power grid transformer substation; judging whether to expand the superior power grid transformer substation according to an average capacity-load ratio of a superior power grid; determining whether a new subordinate power grid transformer substation needs to be constructed at present day, if so, determining a position, load and capacity of the new transformer substation, and accessing the new transformer substation to a power grid according to a space-time evolution model; judging a system is in power shortage, and if so, determining a new superior power grid transformer substation or subordinate power grid transformer substation according to a probability; performing N-1 verification on lines, and upgrading and transforming weak lines not satisfying the verification; and repeating the above steps until a number of iteration days exceeds a number of required iteration days. The method is designed for the power grid with two voltage levels, considers the new construction,expansion, upgrading and transforming of transformer substations, power plants and lines in the growth and evolution processes of the power grid, evolves the power grid from the aspects of time and space, and is of a certain guiding significance to power grid planning and construction.

The invention discloses a method for predicting the overhead line wind load outage probability, can conveniently and rapidly predict the wind load outage probability of an overhead line, and can master weak lines for important protection before strong wind comes. The method can ensure safe and stable operation of a power grid.

The invention belongs to the technical field of construction wiring and particularly discloses a multifunctional open type cabling channel, comprising a channel body and a channel cover which is detachably connected with the channel body, wherein the channel cover is provided with a buckling part; the buckling part and the inner wall of the channel body are arranged by buckling; the channel body is provided with a plurality of baffles; and furthermore, a buckling arranging part between the buckling part and the inner wall of the channel body is provided with a buckling buffering allowance L. According to the multifunctional open type cabling channel, the early-period wiring and post-period line overhauling and exchanging are convenient; and only the channel cover needs to be detached to carry out wiring, overhauling, exchanging and the like. Meanwhile, strong and weak lines are stopped by the baffles, so as to avoid the interference between the strong and weak lines and reduce the influence on the signal quality; and meanwhile, the damaging possibility of a decoration line is reduced and the service life is prolonged.

This invention relates to a method of forming a bag. The method includes the step of forming a line of weakness in a portion of material being used to form a part of the bag, placing a patch over the line of weakness, and forming the bag. The arrangement and construction is preferably such that the patch is located substantially inside the bag thus formed. The line of weakness and patch may preferably act as a self-closing opening for the bag. A bag which includes such a self-closing opening, and bag machinery used for forming such a bag, are also described.