111 results about "Ground layer" patented technology

To provide a basin area member which has high hydrophilic nature, matte appearance and can suppress slipperiness.SOLUTION: A basin area member comprises: a substrate; and a coating layer covering the substrate. The coating layer has: a ground layer provided on a surface of the substrate; and a surface layer provided on a part of a surface of the ground layer. The coating layer has: a first area where the ground layer is covered with the surface layer; and a second area where the ground layer is not covered with the surface layer. The surface layer includes: a coating film formed of a cured object of a hydrophilic coating in the first area; and an aggregate formed by aggregation of multiple particles in the coating film. The aggregate has parts where two or more particles overlap in a lamination direction. A ratio of an area of the second area to a total of areas of the first area and second area in viewing along the lamination direction is 1.6% or more and 50% or less in the basin area member.SELECTED DRAWING: Figure 3

According to various embodiments, an electronic apparatus may comprise: a housing including a front cover, a rear cover facing a direction opposite a direction of the front cover, and a side frame surrounding a space between the front cover and the rear cover; and a distance detection sensor module configured to detect a distance to an external object through the front cover from inside the space, wherein the distance detection sensor module may include: a substrate including a light emitting unit, a light receiving unit, a control circuit, and a ground layer; a module housing disposed on the substrate; a first shield can disposed in the module housing and electrically connected to the ground layer of the substrate; and a second shield can surrounding at least a portion of the light emitting unit disposed in the first shield can and exposed through the first shield can, and in contact with at least a portion of the first shield can.

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 application relates to the technical field of heat dissipation, and discloses a communication base station ground cooling heat dissipation system which comprises a rustproof metal tank, a base station box, a heat absorption assembly and a flow guide assembly. The rustproof metal tank is pre-buried underground to absorb and cool the heat in the cooling liquid, and refrigerant and a compressor are not needed for cooling, so that the energy consumption is reduced, and the pollution of the refrigerant to the environment is reduced. The heat can be transferred along the direction of the fan-shaped surface where the liquid storage bins are arranged, the soil layer temperature in the remaining directions does not change too much, and then the circulation heat conduction of the multiple groups of liquid storage bins is realized, the rustproof metal tank is sequentially cooled in different fan-shaped surfaces, so that the local ground layer temperature around the rustproof metal tank is prevented from being too high, and the ground cooling heat dissipation effect of the equipment is affected.

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.

The utility model discloses an outdoor grain drying device, and belongs to the technical field of grain drying equipment. The outdoor grain drying device comprises a drying tower, a shell, a platform structure and a first shielding piece, the drying tower is arranged in the shell, the shell is installed on a ground hardened layer, the platform structure is arranged at the top end of the shell, the first shielding piece is installed on the platform structure, and the first shielding piece extends towards the side of the platform structure by a preset distance. According to the utility model, the drying tower is arranged in the shell, and the shell is directly arranged on the ground hardening layer, so that the drying device can be directly arranged outdoors to dry grains, the space utilization rate of the drying device is improved, and the problem of low space utilization rate of the drying device in the prior art is solved.

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 discloses a method for controlling the surface flatness of an LTCC substrate, which relates to the technical field of LTCC substrate processing. The method comprises: obtaining structural information of a signal layer, a power layer, and a ground layer superimposed within a target LTCC substrate to be sintered; determining K initial channel flow rates and K initial airflow directions; obtaining an array sequence of multi-point temperature timing monitoring values; obtaining K adjustment channel flow rates and K adjustment airflow directions; and after the target LTCC substrate cools, obtaining the target LTCC substrate and surface flatness detection results, performing feedback adjustment based on the surface flatness detection results, and sintering the target LTCC substrate again. The present invention solves the technical problem in the prior art of lacking in-depth analysis of the operating conditions within the sintering furnace, resulting in an inability to adaptively adjust the airflow, which reduces the reliability of the substrate surface flatness. The method achieves the technical effect of dynamically adjusting the airflow within the sintering furnace and improving the substrate surface flatness.

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 utility model discloses a dustproof device for excavating a road foundation pit, and relates to the technical field of foundation pit dust prevention, the bottom of a dustproof plate is provided with a base, the bottom of the base is provided with a first pile head, the base is connected with a foundation layer through the first pile head, the front side of the dustproof plate is provided with a supporting mechanism, and the supporting mechanism is fixedly connected with the dustproof plate; a connecting mechanism is arranged at the right end of the dustproof plate, the dustproof plate is connected with the other group of dustproof plates through the connecting mechanism, a spraying mechanism is arranged at the top of the dustproof plate, and the dustproof plate is connected with the spraying mechanism through a connecting seat. Through the arrangement of the base and the first pile head, when the dustproof plate is fixed by the base, the first pile head can be embedded into the foundation layer for fixation, and then the supporting mechanism is fixedly attached to the surface of the foundation layer, so that the equipment can be more stable when being fixed, and the situation that the dustproof plate topples over is avoided; and the stability of the equipment during use is improved.

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 present invention discloses a mold and method for simulating mural hollowing disease, wherein the mold comprises: a base; an elastic membrane connected to the periphery of the base and used to support a ground layer, and one end of the elastic membrane has a through opening for gas and liquid to flow in and out; a receiving cavity located between the base and the elastic membrane and used to support gas and liquid; a sealing member adapted to the through opening and used to seal the through opening; a fixing anchor located within the elastic membrane and used to fix the elastic membrane together with a liquid setting agent after solidification; and a pull rope connected to the interior of the elastic membrane, passing through the receiving cavity and extending out of the through opening. The present invention can achieve the effect of applying ground layer on the elastic membrane and forming hollowing after ventilation, thereby effectively simulating the hollowing disease phenomenon of the mural. Grouting experiments can be conducted through the formed hollowing to effectively evaluate the grouting effect, providing scientific protection for mural protection.

The utility model provides a display device. The display device comprises a backboard, a rear shell, a PCB, a grounding piece and a bolt. Due to the arrangement of the grounding piece on the back plate of the PCB, the thickness of the PCB at the through hole is increased. Compared with the prior art that the screw directly penetrates through the PCB, the display device has the advantages that the screw penetrates through the grounding piece, so that the front end of the screw moves backwards, the screw is effectively prevented from being in contact with a component on the front side of the back plate, and the installation safety of the display device is guaranteed. The grounding piece comprises a first grounding layer and a second grounding layer which are attached to each other, the first grounding layer and the second grounding layer are provided with a connecting part, and under the condition that the requirement for the same grounding thickness between the screw head and the PCB is met, due to the fact that the first grounding layer and the second grounding layer which are attached to each other are formed through bending, the thickness of the grounding piece is reduced. The grounding piece can be supported by a thin material, so that the material cost is saved.

The utility model provides a microstrip antenna and monitoring equipment. The microstrip antenna comprises an antenna radiator, a dielectric layer, a reference ground layer and a wiring layer which are sequentially stacked, the microstrip antenna further comprises a radar assembly, the radar assembly is arranged in the wiring layer and comprises at least two feed ports, and the antenna radiator is in signal connection with the feed ports. The at least two feed ports comprise at least one signal receiving feed port and at least one signal transmitting feed port, and the resonant dominant frequency of the microstrip antenna is greater than or equal to 5725 MHZ and less than or equal to 5850 MHZ. According to the utility model, the problem of high false alarm rate of monitoring equipment in the prior art is solved.

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 drilling support device for supporting the evaluation of the hardness of stratum when drilling a pile hole, and a drilling support method.SOLUTION: A management device 20 for supporting confirmation of a hard ground includes: a drilling information storage unit 22 which stores a measurement value of vibration frequency of surface vibration, in association with a measurement position of the surface vibration; and a control unit 21 connected to a display device. The control unit 21 acquires a time sequence of the measurement values at the time of drilling, calculates a robust value regarding measurement values of a plurality of continuous measurement points in time, and outputs information regarding the hardness of the stratum using the robust values.SELECTED DRAWING: Figure 3

The invention relates to the technical field of optical cables, and provides a self-heating temperature-sensing optical cable and a wire harness assembly, the self-heating temperature-sensing optical cable comprises an optical unit from inside to outside, the optical unit comprises a sleeve, and a plurality of optical sensing elements are packaged in the sleeve; the heating layer comprises an electric heating element which is used for increasing the local temperature of the plurality of optical sensing elements and maintaining the local temperature in a set range; the grounding layer is connected with the heating layer to form a closed loop or is independently grounded; the insulating layer is arranged between the heating layer and the grounding layer and is used for isolating the heating layer from the grounding layer; the local temperature of the optical sensing element is actively increased and maintained through the electric heating element of the heating layer, the limitation that a traditional temperature sensing optical cable depends on the environment temperature is effectively overcome, compared with a conventional temperature sensing optical cable, it is ensured that the optical sensing element accurately detects temperature changes, the detection sensitivity of a DTS system to tiny temperature changes can be remarkably improved, and the reliability of the DTS system is improved. And the detection reliability of the DTS system in scenes such as an oil well is improved.