50results about How to "Avoid voids" patented technology

The invention relates to the technical field of hollow part production, and discloses a metal-plastic composite car lamp frame shell integrated injection molding device which comprises an injection molding machine, a movable mold and a fixed mold are installed in the injection molding machine, an external manipulator and an external cooling module are installed outside the injection molding machine, and two fixing holes are symmetrically formed in the outer surface of the movable mold; an injection molding assembly is arranged in the injection molding machine, the injection molding assembly comprises not less than two metal pipes and not less than four extension pipes, and in the cooling process, the metal pipes are cooled from inside to outside based on the physical characteristics of the metal pipes; by means of the cooling mode, the middle of the molding material is cooled and shrunk firstly, the situation that the outer layer is solidified firstly due to the fact that cooling is conducted from the outside to the inside of the cavity traditionally is changed, when the internal material is cooled and shrunk, limitation of the solidified outer layer material is avoided, and therefore the problem that cavities are generated due to inconsistent shrinkage is effectively prevented.

The invention belongs to the field of hybrid bonding, and particularly discloses a bonding head for hybrid bonding and a bonding method.The bonding head comprises a bonding head body, the lower surface of the bonding head body is of a horizontal structure, and an annular air pressure groove with a downward opening is formed in the lower surface of the bonding head body along the edge; the positive-negative air pressure device is used for adjusting the air pressure in the annular air pressure groove; and the moving rod assembly comprises a main moving rod and a plurality of auxiliary moving rods, the main moving rod and the auxiliary moving rods penetrate through the bonding head body, and the auxiliary moving rods are arranged around the peripheral side of the main moving rod. According to the bonding head, the annular air pressure groove is formed in the bonding head body, the adsorption force on the to-be-bonded chip is increased, in the bonding process, the main moving rod and the auxiliary moving rod can push the to-be-bonded chip to enable the to-be-bonded chip to have enough deformation quantity, the chip cannot be separated from the bonding head body, the bonding effect of hybrid bonding is improved, and the bonding efficiency is improved. And voids on the bonding interface are avoided.

The invention discloses a part size detection method based on image recognition, which comprises the following steps of: generating a plurality of two-dimensional images with different shadow shapes, recognizing and extracting boundary information and shadow information of a part in the two-dimensional images to obtain the shadow information and normal direction of the part in the two-dimensional images, constructing a three-dimensional image of the part, and detecting the size of the part according to the three-dimensional image. Therefore, the accurate size information of the part can be accurately recognized, the part size measurement precision is improved, the measurement efficiency is further improved, the continuously changing measurement requirements are met, and meanwhile, the normal direction is obtained by recognizing and extracting the boundary information and shadow information of the part in the two-dimensional image, so that the measurement accuracy is improved. And the normal direction information forms a normal field of the part surface, the inclination degree and the shape change of the part surface are known, and the orientation and the concave-convex condition of the part surface are determined, so that the precision of subsequently constructing a part three-dimensional model is further improved, and the measurement efficiency is further improved.

The invention provides a control-surface-free unmanned aerial vehicle and a flight attitude control method, and the control-surface-free unmanned aerial vehicle comprises a vehicle body which is provided with wings on two sides as lifting surfaces; the first power mechanism and the second power mechanism are arranged on the wings on the two sides respectively, and the rotation directions of the first power mechanism and the second power mechanism face the outer sides of the wings on the two sides respectively; the driving mechanisms are arranged on the wings on the two sides respectively and used for driving the first power mechanism and / or the second power mechanism to swing upwards or downwards in the forward flight direction of the unmanned aerial vehicle so as to adjust the flight attitude of the unmanned aerial vehicle. The swing angle range of the first power mechanism and the second power mechanism is larger than 90 degrees. According to the unmanned aerial vehicle, flight attitude control in a fixed wing mode can be realized without setting a control surface, the dead weight of the whole structure is greatly reduced, and the load and cruising ability of the unmanned aerial vehicle are improved.

This utility model provides a pile head reinforcement structure for construction in hard rock formations, including a steel sleeve, a grouting structure disposed between the steel sleeve and the outer surface of the pile head, a shear structure for forming a mechanical interlocking effect between the pile head and the steel sleeve, an anchoring structure for reliable connection with the pile body, a pressure-bearing flange disposed at the bottom of the steel sleeve, and a reinforcing rib structure arranged on the outer wall of the steel sleeve. The steel sleeve is fitted around the periphery of the precast pile head, and the grouting structure fills the space between the inner wall of the steel sleeve and the outer surface of the pile head and is fixed to both. This pile head reinforcement structure for construction in hard rock formations solves the problem that, due to the lack of effective structural reinforcement and circumferential restraint measures for precast pile heads in related technologies, pile heads are prone to spalling, crushing, cracking, and other damage under high loads and impact conditions.

The utility model discloses a dowel bar device for a cement concrete panel, belongs to the field of roads, and solves the problems that slab staggering, cracking, cracking, void and slab breaking are easy to generate at the junction of a longitudinal joint and an expansion joint of the cement concrete panel. The device comprises two U-shaped dowel bars and a sleeve, an internal thread is arranged at one end of the sleeve, a first side bar and a second side bar are arranged on the two sides of each U-shaped dowel bar respectively, an external thread is arranged at the end of each first side bar, and the two U-shaped dowel bars are connected through the sleeve to form a rectangular structure. The first side rod of one U-shaped dowel bar and the second side rod of the other U-shaped dowel bar are connected to the same sleeve, the first side rod is connected with the sleeve through threads, and the second side rod is connected with the sleeve in an inserted mode. The four panel corners at the longitudinal joints and the expansion joints can be connected to form a closed loop, the functions of the longitudinal joints and the expansion joints in the prior art are considered, the integrity of the cement pavement structure is enhanced, and the effects of preventing slab staggering, cracking, cracking, disengaging and slab breaking are remarkably improved.

The utility model discloses a fixing fixture for an anti-floating anchor rod, and relates to the technical field of mechanical engineering, a second through column is arranged outside the anchor rod, a stable holding mechanism is assembled in the second through column, a power assembly is assembled in the second through column, the stable holding mechanism comprises a plurality of first connecting rods, and the first connecting rods are connected with the first connecting rods. The side end of each first connecting rod is fixedly connected with a second connecting rod, the side end of each second connecting rod is fixedly connected with a hinge block, the side end of the second through column is fixedly connected with a fourth through column, and the side end of each first column block is arranged at the side end of the fourth through column. According to the mechanism, the mechanical transmission principle is adopted, a traditional fixing clamp for the anti-floating anchor rod is improved, the stability of the traditional fixing clamp for the anti-floating anchor rod for fixing the anti-floating anchor rod is improved through an additional structure, when the hole diameter is too large, the anchor rod is inserted, the phenomenon of cavities or non-uniformity in the grouting process can be prevented, and the grouting quality and the anchoring effect are improved.

A composite thawing method for frozen soil in tunnel boring machines (TBMs) includes the following steps: S1, driving sheet piles into the frozen soil location to break up the frozen soil; S2, extracting the sheet piles after construction; S3, applying high-pressure jet grouting with salt-cement slurry to the frozen soil location, using the high-pressure jet grouting to cut and thaw the frozen soil. This invention employs a composite thawing method combining sheet pile breaking and high-pressure jet grouting with salt-cement slurry. During construction, the frozen soil is first mechanically broken up using sheet piles, and then cut and thawed again using salt-cement slurry. Compared to traditional natural thawing or mud circulation thawing methods, this method effectively improves thawing efficiency, shortens the construction period, avoids the problem of soil voids in front of the cutterhead caused by mud circulation thawing methods, improves safety, and has the advantage of low construction cost.

The application discloses a method for generating a stable clamping pose of a double-arm clamping jaw based on a point cloud, and relates to the technical field of robots, and comprises the following steps: obtaining an image of a target object captured by a camera and depth information of a corresponding frame, and inputting the image into a stereo depth estimation model to obtain corresponding estimated depth information. The application solves the problem of depth missing of the target object in a shielding and complex structure area by fusing the depth information of an RGBD camera and the stereo depth estimation result, improves the completeness of point cloud data, adopts a depth fusion mechanism determined by difference to take into account the accuracy of model estimation and camera measurement, improves the quality of point cloud, generates a jaw pose by combining force closure and collision avoidance constraints to ensure the stability and safety of grabbing, reduces the complexity of the model by using point cloud features with rotation and translation invariance, and improves the recognition ability of a grabbing area and the success rate of grabbing by the interaction between target object features and jaw features.

The utility model relates to silicone sealant technical field especially, it relates to a base material production system used in the preparation of silicone sealant, including dehydration kettle and modification reation kettle, and the outlet of dehydration kettle and the outlet of modification reation kettle are connected with the reaction unit respectively, the top and bottom of reaction unit are equipped with inlet and outlet respectively, and the top of reaction unit is equipped with vacuum port, and the vacuum port is connected with vacuum buffer device, the outside of reaction unit is equipped with first heating part, and the inside of reaction unit is equipped with second heating part and pivot, and one end of pivot is connected with motor, and first dispersion part, second dispersion part and third dispersion part are equipped on pivot. The production system is reasonable in design, can guarantee that material mixes evenly, contacts reaction fully, also discharges the moisture in material, reduces and avoids the generation of air bubble when stirring, guarantees the quality of base material.

The utility model relates to the technical field of medical instruments, and discloses a visual measurable intervertebral fusion pressing bone grafting device which comprises a metering tube, a glass tube used for implanting bone grains is connected to one side of the metering tube in a clamped mode, a storage box used for storing the bone grains is arranged on one side of the glass tube, and the metering tube is connected with the storage box in a clamped mode. A push rod used for pressing is connected to one side of the storage box in a clamped mode, and a handle used for holding is arranged on one side of the push rod. According to the visual and measurable intervertebral fusion pressurizing bone grafting device, through the cooperative arrangement of the metering pipe and the push rod, implanted bone grains can be metered by the device during use, so that the use amount of the implanted bone grains in the body of a patient is more accurate, and through the arrangement of the metering pipe, the operation is more convenient; according to the bone grain filling device, the medical staff can know the using amount of bone grains more conveniently through comparison with the metering pipe during use, so that the medical staff can fill the bone grains conveniently according to the situation, the bone grains in the device can be pressed through the arrangement of the push rod, and the convenience of the device is improved.

This utility model relates to the field of door lock technology, specifically a positioning and rotating handle device. It includes a mounting plate with a positioning ring installed in the center. A handle component is rotatably connected to the outside of the positioning ring. The handle component includes a rotating part, the front end of which is fitted onto the positioning ring. A spring is installed inside the rotating part, and a steel ball is attached to the end of the spring. The positioning ring has several equally spaced positioning grooves arranged in a ring on the side near the handle component. When the handle component rotates, the steel ball engages with each positioning groove in sequence, increasing rotational stability and feel. In this positioning and rotating handle device, the spring pushes the steel ball to engage with the positioning grooves on the positioning ring, achieving precise positioning of the handle component during rotation. Each rotation, with the steel ball embedding into the positioning groove, provides clear tactile feedback to the user, preventing any play or jamming during operation. It is particularly suitable for applications requiring high operational precision, improving stability and reliability.

The invention discloses an insertion core auxiliary device and method. The device comprises an inner core, a guide cylinder, a pressing ring, a pressing rod, a guide rod, a forming cylinder, a fixed base, a plug pin, a balancing weight pull rod, a balancing weight and an insertion core support. The insertion core support is connected with the fixed base, the forming cylinder is placed in the fixed base, the pressing rod is connected with the pressing ring, the guide cylinder, the protection ring, the fixed base and the insertion core support, and after the pressing ring is connected with the pressing rod, the guide cylinder and the protection ring are pressed tightly; the guide rod is upwards connected with the inner core and downwards connected with the balancing weight pull rod, the guide rod is connected with the inner core through a sleeve type thread to ensure that a seam is smooth, and the guide rod is connected with the balancing weight pull rod through a bolt; and the balancing weight is arranged on the balancing weight pull rod. According to the invention, the working efficiency is improved, the face-to-face time of people and materials is shortened, for some dangerous or harmful slurry, the operation safety is improved, the descending speed of an inner core after pouring can be adjusted, the introduction of air holes is reduced, and cavities caused by the fact that the backflow speed of the slurry is lower than the descending speed of the inner core are prevented.

The utility model discloses a wall fair-faced concrete blanking and vibrating guiding device which comprises a guiding channel which is a cage-shaped body component with two open ends and a hollow interior. The reinforcing pieces are arranged on the guide channel in a sleeving mode at equal intervals or unequal intervals; and the limiting pieces are used for connecting the reinforcing pieces to the guide channel, so that the wall bare concrete discharging and vibrating guide device is formed. The blanking and vibrating device is simple in structure and novel and reasonable in design, smooth blanking and in-place vibrating of concrete can be effectively guaranteed through the blanking and vibrating channels, and common quality problems such as slag inclusion, bubbles, holes and pitted surfaces after concrete pouring are effectively controlled; according to the fair-faced concrete vibrating device, blanking and vibrating positioning can be facilitated in the pouring process of fair-faced concrete, the concrete pouring quality is effectively controlled, repairing work needing to be carried out due to the fact that vibrating is not in place can be reduced, and therefore the labor cost is reduced, and the construction period is shortened.

The present invention discloses a multi-modal pushover test system for deep underground structures based on hybrid tests, which belongs to the technical field of underground structure tests. The test system includes a numerical substructure composed of a numerical model of a deep underground structure and a part of the surrounding soil removed, and a test substructure composed of a large-scale stratum-deep underground structure pushover model test designed according to the removed part and a free field model composed of a one-dimensional soil column numerical model, which are respectively connected to the numerical substructure. The present invention also provides a multi-modal pushover test method for deep underground structures based on hybrid tests. The present invention integrates numerical simulation and model tests through hybrid test technology, which can provide more accurate mechanical boundary conditions for pushover tests, thereby being able to well reproduce the initial ground stress state of the deep underground structure while introducing the influence of high-order modes, and also overcome the problem of the traditional pushover test technology that the loading plate and the soil are detached during the loading process.

A printed circuit board (10) for mounting a heat dissipation member (12) is provided with a first pad (16), a second pad (18) connected to a part of the peripheral edge of the first pad (16), and a solder paste (20) applied to the second pad (18). The solder paste (20) has a protruding portion (22) that protrudes from the second pad (18) toward the first pad (16) via a connection portion between the first pad (16) and the second pad (18). The protruding portion (22) extends to the inside of the terminal arrangement region (16AR) of the first pad (16).

This application discloses a method for manufacturing a window and an electronic device including the window. The method for manufacturing a window includes: placing a substrate in a guide film that houses the substrate and is provided with an opening defined to extend through the guide film and overlap with a portion of the substrate in a plan view; providing a first solution comprising light-blocking particles and a polymer resin to an edge portion of an interior space of the guide film, wherein the interior space is divided into a central portion overlapping the opening in a plan view and an edge portion located outside the central portion; providing a second solution comprising the polymer resin to the central portion; placing a magnet to overlap with the edge portion in a plan view, such that the light-blocking particles are moved by means of the magnet; and using ultraviolet light to cure the light-blocking particles and the polymer resin to form a black matrix and a coating.

The utility model relates to a steel bending machine for construction engineering, the steel bending machine for construction engineering is through being provided with transmission link and being connected with the bending bar in its end part, makes it in the process of using, one side can realize the effect that the steel is limited, the other side realizes the bending of two sizes of steel simultaneously through the bending bar, avoids the virtual position of one when the steel of two sizes is bent simultaneously between transmission link and support link, sets up the worm -like revolving stage that the inside diameter is increasing gradually from inside to outside in succession through the bending bar, and the middle part of revolving stage is equipped with the installation slot that facilitates pipe material placement. Make it in the process of using, can realize the effect that the end of the plate is bent in multi -angle, to this to guarantee its applicability in the process of using.

A foldable electronic device comprises a right mounting plate and a left mounting plate, hinges are arranged on the adjacent sides of the right mounting plate and the left mounting plate, the two hinges are jointly provided with a shaft connecting plate, the left mounting plate is rotated towards the right mounting plate along the shaft connecting plate, and the left mounting plate is rotated towards the right mounting plate along the shaft connecting plate. The right mounting plate, the left mounting plate and the shaft connecting plate form a structure in the shape of a folder, a display screen module is arranged in the right mounting plate in an embedded mode, and a mainboard module, a battery module and a WIFI module are arranged in the left mounting plate in an embedded mode. The left mounting plate is rotated along the shaft connecting plate, gaps are prevented from being generated in the folding process of the electronic equipment, the right mounting plate and the left mounting plate can be pulled after folding by arranging the sleeve shell with the tightening belt outside the right mounting plate and the left mounting plate, the right mounting plate and the left mounting plate are prevented from being rotated and unfolded at will, and the structural stability is improved; and meanwhile, the exteriors of the right mounting plate and the left mounting plate are protected when falling and being impacted.

The invention provides a solder resist composition used for filling a through hole of a printed circuit board and the printed circuit board with a cured product of the solder resist composition. The solder resist composition is characterized by containing (A) a carboxyl group-containing resin, (B) a photopolymerization initiator, (C) a compound containing an ethylenically unsaturated group and an epoxy group, (D) an inorganic filler and (E) a thermosetting resin.

The invention provides a plane multidirectional bridge damping energy consumption device with a self-resetting function and a restoring force calculation method thereof. The device comprises an upper movable block, a lower connecting plate system, a connecting rod system and an SMA inhaul cable system. The lower connecting plate system is composed of a lower connecting plate, a sliding bearing, a limiting check block, a fixed pulley, a double-layer fixed pulley and an anchoring plate. The connecting rod system is composed of a push plate, a first connecting rod, a sleeve bolt check block, a second connecting rod, a connecting piece and a movable pulley. The SMA inhaul cable system is composed of SMA inhaul cables, bolts and nuts, the SMA inhaul cables surround the inner sides and the outer sides of the fixed pulleys and the movable pulleys respectively, and the two ends of each SMA inhaul cable are anchored to the anchoring plates through the bolts. The upper movable blocks can push the corresponding push plates to move in any direction of the plane, the SMA inhaul cables are lengthened to achieve the damping, energy dissipation and self-resetting functions, and the limiting check blocks achieve the limiting function by limiting the movement range of the push plates. And analyzing the geometrical relationship between the movement distance of the upper movable block and the elongation of the SMA inhaul cable to obtain a calculation method of the restoring force of the device. The size of the device can be reduced, bidirectional self-resetting and limiting functions are provided, and the use efficiency of the SMA inhaul cable is improved.

The flux of the present invention is characterized by containing rosin, a solvent, a thixotropic agent, an amine hydriodate, and an active agent (excluding amine hydriodates), and the amine hydriodate contains a heteroalicyclic amine hydriodate. The heteroalicyclic amine hydriodate is preferably selected from at least one of piperidine hydriodate and methyl piperidine hydriodate. According to this flux, the occurrence of voids during soldering can be further suppressed.

The invention provides a quantitative material adding device and system. The quantitative material adding device comprises a stock bin, wherein a discharging barrel is arranged at the bottom end of the stock bin; the rotating shaft is vertically and rotatably arranged in the stock bin; the paddle assembly is detachably arranged on the rotating shaft, the paddle assembly comprises at least one dispersing paddle and at least one gathering paddle, the dispersing paddle is used for dispersing materials in the stock bin, and the gathering paddle is used for gathering the materials in the stock bin; the feeding screw rod is detachably arranged at the bottom end of the rotating shaft, and the bottom end of the feeding screw rod extends into the discharging barrel; and the driving mechanism is in transmission connection with the rotating shaft, and the driving mechanism is used for driving the paddle assembly and the feeding screw rod to rotate so as to push the materials into the discharging barrel to be discharged. Through the synergistic effect of the scattering blades and the polymerization blades, the bridging and caking phenomena generated by accumulation of materials at the bottom of the stock bin are broken, the device is prevented from being blocked, continuous and uniform discharging is achieved, and the material adding efficiency is improved.

The application provides a high-temperature unstable permafrost pre-melting and vacuum preloading reinforcement system and a reinforcement method, and the system comprises a pre-melting and thawing device, a sealing system and a steam generator, and the sealing system and the steam generator are connected with the pre-melting and thawing device. The pre-melting and thawing device is matched with the steam generator, the high-temperature unstable permafrost is pre-melted by using steam convection and heat conduction, the pre-melting and thawing efficiency is improved, the system has the characteristics of green environmental protection, and has no adverse effect on subsequent engineering construction. The sealing system is matched with the pre-melting and thawing device to realize the drainage consolidation of the high-temperature unstable permafrost foundation, the thawing pipe and the soil body are prevented from being empty, the pre-melting and thawing efficiency is ensured, the uneven subsidence problem caused by repeated freezing and thawing cycles is eliminated, the bad properties of the frozen soil are changed, and the stability of the foundation is effectively improved.

This invention discloses a production apparatus for frozen duck blood. The invention relates to the field of duck blood production technology and includes two base plates. Connecting plates are fixedly connected to the top sidewalls of both base plates. A conveying assembly for transporting packaged duck blood is rotatably connected to the inner wall of each connecting plate. A processing assembly for vacuum degassing and packaging the duck blood is located at the upper end of the conveying assembly. For bagged duck blood, this invention applies uniform pressure through a forming plate, ensuring the duck blood evenly fills the packaging bag, preventing sedimentation due to gravity, and ensuring uniform distribution of the duck blood after freezing, thus improving the product's appearance regularity. For boxed duck blood, an adjustable mounting block and a first clamping plate achieve precise fixing of boxed duck blood of different sizes, preventing clamping deviation and crushing damage, ensuring packaging integrity, and thus ensuring the quality stability of the frozen boxed duck blood.

This invention relates to the field of building engineering technology, specifically to a non-vibration pressure grouting construction method for tall steel-concrete composite columns. S1: Grouting holes are opened at the bottom of the steel-concrete column, and vent holes are opened at the top. S2: A grouting connection structure is installed, and a grouting connection pipe is welded at an acute angle to the column axis and extends into the column. A check valve is installed on the pipe, and reinforcing ribs are welded between the pipe and the column. S3: Pressure grouting is performed from the compacted concrete until it overflows from the vent holes. S4: After the concrete has settled naturally, secondary grouting is performed until it overflows from the vent holes again. S5: The check valve is closed to prevent backflow. S6: The grouting holes are sealed after the concrete reaches 70% of its design strength. This invention, through a grouting connection structure with a check valve and reinforcing ribs, combined with a secondary grouting process, systematically solves the problems of concrete backflow, insufficient compaction at the top of the column, and easy damage to the connection structure during the initial jacking process of ultra-high-rise buildings. It significantly improves construction quality, safety, and efficiency, and is applicable to the construction of tall steel-concrete composite columns in industrial and civil buildings.

The application provides an LED chip and a preparation method thereof. An insulating reflection layer is arranged on an epitaxial stack surface, and the insulating reflection layer has through holes corresponding to exposed parts of a groove and a mesa respectively; meanwhile, metal filling layers are arranged in the through holes respectively; a first electrode is laminated on a surface of the metal filling layer corresponding to the exposed part of the groove through the through hole, and extends upward to a surface of the insulating reflection layer; and a second electrode is laminated on a surface of the metal filling layer corresponding to the exposed part of the mesa through the through hole, and extends upward to the surface of the insulating reflection layer. Thus, the filling of the metal filling layer can realize the filling of the opening of the insulating reflection layer, reduce the surface height difference caused by the opening of the insulating reflection layer and the cavity caused thereby, and further solve the technical problems of stress mismatch, heat accumulation and uneven current distribution caused thereby.

The application provides a tunnel structure and a tunnel secondary lining cavity and thickness deficiency repairing construction method, relates to the technical field of tunnel construction methods, and when repairing the secondary lining cavity, exhaust holes and grouting holes are drilled on the secondary lining at the cavity; an exhaust pipe is inserted into the exhaust hole, and a grouting pipe is inserted into the grouting hole; an external grouting device pours concrete into the cavity through the grouting pipe to form a first filling part; the exhaust hole on the secondary lining is filled with concrete to form a second filling part, and the grouting hole is filled with concrete to form a third filling part; when repairing the secondary lining thickness deficiency, the concrete in the secondary lining thickness deficiency area is removed; a containing space is formed between the waterproof board and the secondary lining, a reinforcing assembly is implanted in the containing space, and concrete is poured into the containing space and is used for lining. The application alleviates the technical problems of the partial secondary lining back cavity and the secondary lining concrete thickness deficiency in the existing technology of the tunnel in the surrounding rock of class III and class IV during the construction process.

The application relates to the technical field of intelligent driving, in particular to a drivable area identification method and device, an electronic device and a storage medium, in response to a drivable area identification request triggered by a driving object, a target road image to be identified currently is acquired; according to preset candidate image scales, feature extraction is respectively performed on the target road image, and corresponding road feature maps are obtained; for each road feature map, the following operations are respectively performed: based on image position information of each pixel point contained in one road feature map, in combination with image channel information contained in the one road feature map, attention weighting processing is performed on the road feature map, and a corresponding attention feature map is obtained; based on the image scale of the target road image, image scale adjustment is performed on each obtained attention feature map, at least one target feature map is obtained, and a drivable area of a target vehicle is obtained based on the at least one target feature map. In this way, the accuracy of drivable area identification is improved.

The utility model belongs to the technical field of rubber water-stop belts, and discloses a middle-buried anti-cracking rubber water-stop belt which comprises a water-stop belt body, and four hook portions are arranged at the positions where the water-stop belt body is combined with the edges of a concrete body. And the bristle parts are integrally formed on the surface of the water stop belt main body. According to the rubber waterstop, the burr parts are arranged at the combining edges of the concrete body, so that the contact condition of broken stones in the concrete material and the waterstop main body in the pouring process is reduced, and the cracking resistance of the rubber waterstop is remarkably improved.