71 results about "Ground layer" patented technology

The utility model discloses a guide drilling tool for horizontal directional drilling pipe laying construction, which comprises a drill rod, a probe chamber and a replaceable drilling tool which are connected in sequence, and during complex stratum construction, a guide drill bit at the front end of the probe chamber can be quickly replaced by a drill bit suitable for different geological conditions for drilling operation through a second connecting sleeve. Or the reamer is replaced for reverse reaming operation. According to the utility model, the drill bit is quickly and conveniently detached; besides, during reverse reaming operation, due to the fact that the probe chamber is reserved, when the drill bit or the reamer is clamped by debris such as broken stones and metal pieces in the ground layer, the accurate clamping position of the drill bit or the reamer can be obtained by means of a detection signal sent by the probe in the probe chamber, accurate basis is provided for troubleshooting treatment, and construction efficiency is improved.

The invention provides an ultra-wideband antenna structure. The ultra-wideband antenna structure comprises a plurality of first antenna layers, a plurality of second antenna layers and a ground layer, each first antenna layer and each second antenna layer are formed by sequentially arranging a plurality of antenna units at intervals; the first antenna layer and the second antenna layer are vertically arranged to form a square array, and a gap between the antenna units of the first antenna layer is inserted into a gap between the antenna units of the corresponding second antenna layer; the ground layer is made of a flexible material; the first antenna layer and the second antenna layer are fixedly arranged on the ground layer; the sides, facing the ground layer, of the adjacent antenna units are connected through the flexible connecting pieces, the ground layer made of flexible materials is adopted to fit the installation face, meanwhile, gaps exist between the adjacent antenna units of the first antenna layer and the second antenna layer, and when the ground layer bends, the shape of the ground layer is fitted, so that the installation face is more flexible. And the conformal installation capability of the ultra-wideband antenna structure provided by the invention during installation is greatly improved.

The utility model relates to the technical field of plastic runways, and discloses a permeable plastic runway which comprises a foundation layer and a drainage channel, a concrete layer is arranged on the top of the foundation layer, a drainage layer is arranged on the top of the concrete layer, a polyurethane surface layer is arranged on the top of the drainage layer, and a waterproof layer is arranged on the top of the polyurethane surface layer. And a surface particle layer is arranged at the top of the polyurethane surface layer, the outer surfaces of the two winding shafts are fixedly sleeved with winding wheels, winding ropes are wound around the outer surfaces of the winding wheels, and the other ends of the winding ropes are fixedly connected with a bearing box. Accumulated water enters a drainage layer through a drainage seam and a permeable layer and is drained into a drainage channel in a cavity, the situation that the service life of the plastic runway is affected due to accumulation of the accumulated water on the plastic runway is avoided, sundries are collected through a receiving box, and by arranging a winding shaft, a winding wheel and a winding rope in cooperation with a crank, a driving bevel gear and a driven bevel gear, the service life of the plastic runway is prolonged. And the receiving box is put away, and impurities in the receiving box are cleaned.

An electronic package includes a carrier and electronic components and a heat sink disposed on the carrier. The carrier has a ground layer exposed on the side of the carrier and the ground layer is in direct contact with the heat sink to dissipate heat from the carrier and provide shielding space for the electronic components.

The invention provides a multi-scale round-square nested fractal antenna applied to wings of an unmanned aerial vehicle. The multi-scale round-square nested fractal antenna comprises a substrate, the grounding layer is arranged on the lower surface of the substrate; the feed structure is arranged at one end of the upper surface of the substrate and comprises an input feed line, a micro-strip transmission line and a chip resistor connected with the input end of the feed line and the micro-strip transmission line; the radiation structure is arranged at one end, far away from the feed structure, of the upper surface of the substrate and comprises a radiation patch; the transmission structure is arranged on the upper surface of the substrate, is used for connecting the feed structure and the radiation structure, and comprises an impedance transition transmission line; the microstrip transmission line is of a geometric gradual change type, the radiation patch is of a multi-scale fractal topology formed by nesting circular contours and square contours, the circular contours and the square contours are sequentially arranged in a nesting mode according to preset intervals and form multi-stage self-similar boundaries, the impedance transition transmission line is in a periodical bending shape, and the line widths of all the parts are consistent. The fractal antenna solves the problem that in the prior art, a fractal antenna which is compact in structure, high in radiation efficiency and suitable for wing embedded installation does not exist.

This application discloses a wide-beam cavity antenna element and its phased array antenna. The cavity antenna element includes a first radiating patch, a first dielectric layer, a second radiating patch, an adhesive layer, a second dielectric layer, and a metal ground layer arranged sequentially. The first radiating patch has a first chamfer on each diagonal and a first U-shaped slot in its center. The second radiating patch has a second chamfer on each diagonal and a second U-shaped slot in its center. This application adopts a dual-radiating patch structure, with the first and second radiating patches located in different dielectric layers, effectively expanding the antenna bandwidth and improving radiation efficiency. The double-layer square microstrip patch design is compact and facilitates miniaturization and integration. The first radiating patch incorporates the first chamfer and the first U-shaped slot, while the second radiating patch incorporates the second chamfer and the second U-shaped slot, increasing the current path and transforming the original single resonant point into three resonant points within the frequency band, significantly widening the antenna's impedance bandwidth.

The invention discloses a compact dual-frequency patch antenna based on a decoupling structure shaped like a Chinese character'tu ', which comprises a top metal layer, a dielectric substrate, a metal ground layer and a coaxial probe feed structure, and a decoupling structure shaped like a Chinese character'tu ', which is formed by symmetrically arranging four metal strips along the horizontal direction, is arranged between the two patches. The antenna can synchronously work at double frequency bands of 3.39 GHz and 5.45 GHz, an electromagnetic weak field area is formed at the position of the feed probe through the decoupling structure shaped like the Chinese character'tu 'to block coupling, and meanwhile, a radiation pattern is corrected by means of a symmetrical structure. The antenna has the advantages of being low in profile, compact in structure, good in dual-frequency decoupling effect and stable in radiation pattern, the integration degree of the dual-frequency antenna array can be improved, and the antenna is suitable for a wireless communication system.

This utility model discloses a limiting manhole ring for anti-settlement manhole covers, including a base layer, a ground layer, and a limiting mechanism. The ground layer is laid on top of the base layer, and the limiting mechanism is set inside the base layer and the ground layer. The limiting mechanism includes a well hole, an insertion hole, a support ring, a reinforcing bar, a concrete manhole ring, and a ring-shaped reinforcing bar. The well hole is opened inside the base layer, and the top of the well hole penetrates the ground layer. The insertion hole is opened vertically on the outer periphery of the well hole inside the ground layer, and the bottom of the insertion hole extends into the base layer. When the manhole ring and the manhole cover are under pressure, the pressure at the pressure point can be dispersed and transmitted to the interior of the base layer because the position of the support ring is fixed. At the same time, because the reinforcing bar is embedded in the concrete, its position is fixed, and the support ring will not tilt or settle, thereby improving the stability of the concrete manhole ring. It can still avoid settlement problems after long-term pressure and maintain the smoothness of the road surface.

The application belongs to the technical field of antennas and relates to a cross-dipole antenna which comprises a metasurface layer, a radiation layer and a ground layer; the metasurface layer is connected with the ground layer and forms a containing space between the metasurface layer and the ground layer; the radiation layer is arranged in the containing space, is connected with the ground layer and is arranged in a spaced mode with the metasurface layer; the radiation layer comprises two pairs of cross-dipoles; two feeding structures are arranged on the ground layer and are connected with the two pairs of cross-dipoles respectively; the radiation layer comprises a dielectric plate and four radiation patches which are arranged in a spaced center-symmetrical mode about the center of the dielectric plate; the dielectric plate and the radiation patches are square structures, one side of the radiation patch is parallel to one side of the dielectric plate; two radiation patches are adjacently arranged on the top surface of the dielectric plate, and the other two radiation patches are adjacently arranged on the bottom surface of the dielectric plate; two opposite radiation patches are connected to serve as a dipole. The application can reduce the profile of the antenna.

The application discloses a reflection wave-absorbing body with a wide-range controllable reflection frequency band, which comprises a lossy layer, a first dielectric layer, an air layer, a non-lossy layer, a second dielectric layer and a ground layer arranged from top to bottom; the lossy layer is located on the upper surface of the first dielectric layer, the air layer is between the first dielectric layer and the non-lossy layer, the non-lossy layer is located on the upper surface of the second dielectric layer, and the ground layer is located on the lower surface of the second dielectric layer. The reflection frequency band of the application has a certain bandwidth, and the wide-range control of the reflection frequency band can be realized by controlling the length of a C groove in the lossy layer and the length of a Jerusalem cross structure in the non-lossy layer, so that the application flexibility is obviously improved.

The application discloses a design method of a label antenna, which comprises sequentially arranging an upper radiation layer, a middle medium layer and a lower ground layer; at least one annular groove is formed on the upper radiation layer; an opening is formed on the annular groove to place a chip, and the annular groove is connected with the chip to form a first inductance loop; double ground columns are arranged below each annular groove between the upper radiation layer and the lower ground layer, and the double ground columns form a second inductance loop corresponding to the first inductance loop with the chip; the size of the annular groove is determined according to the capacitive reactance of a label antenna to be designed; the interval distance of the double ground columns is determined according to the inductive reactance of the label antenna to be designed; the size of the annular groove and the distance of the double ground columns are matched to achieve the best conjugate matching of the chip on each annular groove. The label antenna designed by the design method has the following advantages: first, the ground participates in radiation; second, the double inductance loops collect energy. The sensitivity of the label antenna is greatly improved by the double enhancement.

The present invention aims to provide a technique for improving a non-defective product rate. One of typical reflectarrays of the present invention is a reflectarray including at least a layer of element patterns, a dielectric layer, and a ground layer laminated in this order, wherein the reflectarray includes at least one reflection control areal; the reflection control area includes at least two unit cells; one element pattern is arranged on each unit cell; the element pattern includes a cross-patch in which two rectangular patches are orthogonal to each other in an xy plane; and in the reflection control area, a first element width wx which is a width of the element pattern in an x axis direction or / and a second element width wy which is a width of the element pattern in a y axis direction is / are different between the element patterns arranged in the respective at least two unit cells.

An ancient building flying rafter head and continuous eave tile mouth repairing process, characterized in that, comprising the following steps: 1, the wood structure is thoroughly cleaned and repaired; 2, ground layer construction; 3, color drawing; 4, the outer side of the flying rafter head and the continuous eave tile mouth is sealed by using 304 stainless steel plate; 5, the gap between the water drop and the tile mouth is sealed by using weather-resistant glue; the weather-resistant glue is prepared from raw materials including VAE emulsion, Portland cement, pigment, polypropylene fiber, silica ash and latex powder; wherein, the 304 stainless steel plate is coated with an epoxy fluorocarbon composite coating, and the coating has a three-layer structure, which is composed of a base layer, an intermediate layer and a covering layer.

The invention discloses a slope stability monitoring method based on sky-ground integration, and belongs to the field of slope stability monitoring, and the method comprises the steps: obtaining surface displacement and crack observation data from a ground layer, and employing a data cleaning algorithm to remove noise and abnormal values, and obtaining a high-precision ground local change data set; drilling stress and underground water level data are obtained from an underground layer, deep features are extracted through a signal processing algorithm, and an underground stability feature data set is obtained; according to the multi-dimensional slope feature data set, a dynamic change trend of the slope is extracted by adopting a time sequence analysis algorithm, and a slope stability change trend is obtained; according to the slope stability risk level, a real-time data stream processing algorithm is adopted to update the multi-dimensional slope feature data set, and a dynamically updated slope stability evaluation result is obtained; and aiming at a slope stability evaluation result, generating a real-time slope stability early warning signal by adopting an early warning signal generation algorithm. According to the invention, the precision and timeliness of slope stability monitoring are obviously improved.

A kind of shell includes cover plate and metal ground frame.The cover plate is equipped with main part and rim portion arranged in the periphery of the main part.The cover plate is equipped with at least one mounting hole.The metal ground frame is separately arranged with the cover plate.The metal ground frame includes frame body portion, and the frame body portion is equipped with at least one abutting spring.The rim portion is fixed with the frame body portion, and the abutting spring is configured to be elastically abutted with the ground layer on the first circuit board.The utility model also discloses a module assembly with the shell.The shell can better mask on the first circuit board by the metal ground frame, so as to increase structural strength, and improve the effect of electromagnetic shielding.

The utility model discloses a coupling splicing ecological channel which comprises a ground layer, a mounting groove is formed in the ground layer, an ecological channel is arranged in the mounting groove, the ecological channel comprises a plurality of channel bottom plates, beam body inserting plates and coping inserting plates which are spliced with one another, the channel bottom plates are located at the bottom of the mounting groove, and the beam body inserting plates are located at the bottom of the coping inserting plates. The beam body inserting plate is installed on the channel bottom plate, the coping inserting plate is installed on the beam body inserting plate, and the problems that an existing drainage channel is formed by workers in a pouring mode on site, the construction period of the drainage channel constructed in the mode is long, more workers need to be consumed for construction on site, and the construction cost is high are solved. And therefore, the construction cost is relatively high.

The utility model discloses a kind of multilayer surface-mounted filters, it is related to microwave filter technical field, the utility model is replaced metal cavity / LTCC by adopting compression process multilayer substrate, avoid cavity bulky structure, overcome the problem of LTCC sintering deformation, realize the size is reduced substantially, simultaneously, by interlayer coupling resonance unit in vertical direction is partially overlapped, it can promote Q value to traditional single layer microstrip 2 times or more, and full-wrapped metal shell can replace traditional partial ground layer, reduce stray radiation leakage, can break through volume, loss, suppression, temperature drift and power and multiple bottleneck, to meet the use demand of filter in harsh environment.

The utility model discloses a toilet drainage structure of constructional engineering, which is characterized in that a first water diversion slope layer positioned in a dry area is arranged between a ground layer and a waterproof layer, and a second water diversion slope layer positioned in a wet area is arranged between the ground layer and the waterproof layer; the peripheral side of the first drainage pipe is connected with a first water diversion pipe which is pre-buried in the ground layer and the other end of which extends to the lowest point of the first water diversion slope layer, and the peripheral side of the second drainage pipe is connected with a second water diversion pipe which is pre-buried in the ground layer and the other end of which extends to the lowest point of the second water diversion slope layer. By arranging the first water diversion slope layer and the second water diversion slope layer, water permeating into the ground can flow to an opening of the first water diversion pipe and an opening of the second water diversion pipe, so that the water is discharged along the first water diversion pipe and the first water drainage pipe or discharged along the second water diversion pipe and the second water drainage pipe; and meanwhile, the anti-blocking assembly can prevent the cement mortar layer from falling into the first water guide pipe and the second water guide pipe, and finally the effect of discharging water permeating to the lower portion of the floor tile is achieved.

To provide a coaxial connector that can stably connect the shell to the ground layer of the substrate. [Solution] The coaxial connector 12 comprises a shell 30 and a nut component 40. The shell 30 has a flange portion 34 and a projection portion 36 that protrudes rearward from the flange portion 34. An upper through hole 37 is formed in the projection portion 36. The nut component 40 has a fixed portion 41 with a screw hole 43, a movable portion 45 with a lower through hole 46, and a connecting portion 47 that connects the fixed portion 41 and the movable portion 45 to each other. The nut component 40 is attached to the shell 30 by screwing a screw 60 through the lower through hole 46, the through hole 72 in the substrate 16, and the upper through hole 37 into the screw hole 43. The connecting portion 37 has an upper connecting portion 48 and a lower connecting portion 49. The lower connecting portion 49 is located in front of the upper connecting portion 48. The center of the screw hole 43 is located in front of the upper connecting portion 48.

The application belongs to the technical field of antennas and relates to a circularly polarized reflecting unit and a beam reconfigurable reflecting antenna. The circularly polarized reflecting unit comprises a patch layer, a dielectric layer and a ground layer. The patch layer comprises a first patch and four second patches. The first patch is in a square structure. The second patch is in an elliptical structure, the long axis of which is collinear with one symmetric axis of the square structure, and the short axis is parallel to the corresponding side of the square structure. One side of the elliptical structure is tangent to the square structure, and the other side of the elliptical structure has a cutting groove, the straight side of which is parallel to the adjacent side of the square structure. The four second patches form a "cross" structure. Each side of the first patch is connected to the corresponding second patch through a diode. At the same time, the working states of the two diodes opposite to each other are the same, and the working states of the two diodes adjacent to each other are opposite, so as to realize circularly polarized reflection. The application can realize circularly polarized reflection.

The invention relates to a glue removing method for an HDI step golden finger of an AI computing power card. The glue removing method comprises the following steps that the step golden finger is embedded in a power supply layer or a ground layer of a core board; a signal line electrically connected with the stepped golden finger is guided to the lower layer of the power supply layer or the ground layer through the via hole for wiring; covering the stepped golden finger area of the power supply layer or the ground layer of the core board with a high-temperature adhesive tape; laminating the core board, the prepreg and other inner-layer core boards to form a multi-layer board; carrying out forming and rough fishing on the multi-layer board, and preliminarily forming a laser uncovering area comprising a stepped golden finger area; and performing laser cutting on the laser uncovering area along a preset laser uncovering line, and ablating to remove the covered ink layer and dielectric layer so as to expose the copper surface of the stepped golden finger below. The method has the beneficial effects that the production process can be simplified, and the product reliability and consistency can be improved.

This application proposes a method for fabricating a connection structure with signal conduction, comprising the following steps: providing a copper-clad substrate having a first through-hole; electroplating the inner wall of the first through-hole to form a ground layer; filling the first through-hole with a first material to form a first filling layer, with the two opposing surfaces of the first filling layer flush with the first copper plating layer and the second copper plating layer, respectively; forming a second through-hole in the first filling layer, with the second through-hole coaxially arranged with the first through-hole; electroplating the inner wall of the second through-hole to form a signal transmission layer; and connecting a first component to be connected and a second component to be connected to the signal transmission layer, thereby obtaining the connection structure. The connection structure fabricated by this application has high impedance matching and low risk of signal leakage. This application also provides a connection structure prepared by the above method.

The utility model relates to the technical field of water stop and flood control, in particular to a combined type two-way water stop and flood control gate which comprises a ground layer, a wall body, a control panel, a base, a gate body, an adjusting assembly, a cavity, a groove, an electric telescopic rod and a wedge-shaped supporting block, the wall body is arranged on the upper surface of the ground layer, the control panel is arranged on one side of the wall body, and the base is arranged below the ground layer. A first gate is arranged on the upper surface of the ground layer, a first adjusting assembly is arranged on one side of the first gate, a second gate is arranged on the upper surface of the ground layer, a cavity is formed in one side of the second gate, a second adjusting assembly is arranged on one side of the second gate, a groove is formed in one side of the base, and an electric telescopic rod is arranged on the inner side of the groove. A wedge-shaped supporting block is arranged at one end of the electric telescopic rod; by means of a bidirectional composite flood control mode, the gates are rapidly combined from the two sides according to actual conditions, the double-layer gates are combined to block flood, the flood control strength of the gates is effectively enhanced, and the gates can bear the flood with higher water pressure.

This application belongs to the field of antenna technology and relates to a dual-band dual-circular polarization antenna, comprising: a radiating layer, a first dielectric layer, an air layer, a ground layer, a second dielectric layer, and a feed layer; the radiating layer includes: a radiating patch and a first annular slot and a second annular slot spaced apart; the centers of the radiating patch, the first annular slot, and the second annular slot coincide; notches are provided on the first and second annular slots corresponding to the diagonal positions of the radiating patch, and both the first and second annular slots form a non-closed square annular structure; two feed probes are provided on each diagonal of the radiating patch, one end of the four feed probes is connected to the feed layer, and the other end is connected to the radiating layer; the feed probes are used as feed ports, and two adjacent feed ports form a group, with the excitation phase of each group of feed ports differing by 90 degrees and the excitation amplitude being the same. This application can realize dual-band dual-circular polarization.

The invention discloses a synthetic material playground ground layer crack image recognition method and device and a medium, and the method comprises the steps: obtaining a synthetic material playground ground layer image data set, and enabling the data set to mark a crack region in advance; the data set is preprocessed, and an obtained image serves as a main input source; processing the preprocessed data set by using an improved edge detection algorithm, and taking a generated edge enhancement graph as an auxiliary input source; constructing a deep learning model fusing a deformable two-stage routing attention mechanism and a U-net network, and introducing a space-channel cross selection attention module to perform feature enhancement; and inputting the main input source and the auxiliary input source into the trained model to obtain a crack segmentation mask, thereby realizing automatic identification of a crack region. According to the invention, by improving edge detection and a brand new model architecture, high-precision and light-weight identification of the ground layer cracks of the synthetic material playground is realized, a full-process automatic detection system is formed, and the detection efficiency and reliability are significantly improved.

The invention provides a two-state reconfigurable high-frequency electromagnetic filtering device and a use method, the two-state reconfigurable high-frequency electromagnetic filtering device comprises a dielectric substrate, a surface layer metal structure arranged on one side surface of the dielectric substrate and a metal grounding layer arranged on the other side surface of the dielectric substrate, and the dielectric substrate is provided with a plurality of grounding via holes; wherein the surface layer metal structure comprises an SSPPs waveguide structure and transition structures arranged on the two sides of the SSPPs waveguide structure, the SSPPs waveguide structure is in electromagnetic coupling with the metal grounding layer through a part of grounding via holes, the transition structures are in electromagnetic coupling with the metal grounding layer through the other part of grounding via holes, and the SSPPs waveguide structure and the transition structures are both periodic metal strip structures. The frequency band of the device is just clamped between the traditional automotive EMC and the high-frequency newly-added section; in the cut-off state, 0-3.5 GHz can pass; the structure is simple, external control is easy, and a complex control module does not need to be arranged on a vehicle.

The application belongs to the technical field of ornaments and relates to an auxiliary device for copying and mounting a mural, which comprises a flattening piece, wherein the flattening piece comprises a curved surface, a pointed part and a bevel, the top of the flattening piece is provided with a pointed protruding structure to form the pointed part, the outer side of the flattening piece is provided with an egg-like structure to form the curved surface, the top of the bevel is beveled to form the bevel, and a placing seat is sleeved with the outer side of the pointed part at the bottom of the flattening piece. When different concave-convex surfaces need to be flattened, the curved surface, the pointed part or the bevel on the flattening piece can be used to flatten the corresponding positions according to different concave-convex surfaces, wrinkles are prevented, different tools are not needed for flattening, different parts on the flattening piece can be used to complete the flattening work on different concave-convex amplitudes of the ground layer, tools do not need to be frequently replaced, the flattening work is more convenient, the efficiency of the flattening work is improved, the overall mounting work efficiency is improved, and the mounting of the mural is more convenient.

The invention discloses a low-profile annular slot coupled feeding microstrip patch antenna and an electronic device, mainly through annular slot coupled feeding and a grounding metal column mode, radiation current is mainly concentrated on the grounding metal column, and compared with a traditional patch antenna, the microstrip patch antenna has better omni-directivity. According to the main technical scheme, the microstrip patch antenna for low-profile annular slot coupled feeding comprises a patch, the patch comprises a center piece and an annular piece, the annular piece surrounds the periphery of the center piece, and an annular slot is formed between the annular piece and the center piece; the dielectric layer is located between the patch and the reference stratum; the feed probe is connected with the central sheet; and the grounding metal column is connected with the annular sheet and the reference ground layer. The invention is mainly used for radiation.

The embodiment of the utility model relates to the technical field of wireless communication, and particularly discloses an ultra wide band antenna and a communication terminal, comprising a dielectric layer provided with a first surface and a second surface arranged opposite to the first surface; the radiation layer is arranged on the first surface, the radiation layer comprises a radiation patch and a feeder line connected with the radiation patch, two first gaps are formed in the radiation layer, and the two first gaps are arranged in parallel in the width direction of the feeder line; the two first gaps are located at the joint of the radiation patch and the feeder line, and a transmission zero point is introduced into the two first gaps; and the sunken ground layer is arranged on the second surface, and the sunken ground layer is coupled with the radiation layer. Through the above mode, the antenna provided by the embodiment of the utility model can improve the direction selectivity of the antenna.