236results about How to "Avoid unstable situations" patented technology

The invention provides a lane line positioning method based on multi-feature fusion and a polymorphism mean value. According to the method, images of road conditions in front of vehicles are obtained through a camera; the gray level distribution information of lane lines and the color distribution information in an HSI space are fused according to weight to obtain a lane line suspected area according to the pavement gray scale normal distribution features and the HIS color space information; then, according to priori knowledge, the searching is carried out from the middle of a road to the two sides for excluding non-lane regions, and sub images which avoid the non-road feature interference and contain the lane lines are obtained; then, the sub images are subjected to margin determination; Hough transformation is adopted for detecting straight lines for determining the positions of the lane lines in the current frame; and finally, through fusing the multi-frame lane line states and utilizing the actual condition that the lane line positions cannot suddenly change, the mean value of detection results of continuous frames is worked out, and stable lane line positioning results are obtained.

A message proces method A system and a computer-readable storage medium, The method comprises: the server receives the message subscription instruction sent by the client, monitor the default policy database, Change information recording changes in data in the policy database is stored in a file server, and receives the file identification information returned by the file server, A release messagecarrying service processing information is generated according to the change information, The client end extracts the service processing information contained in the published message, and extracts the change information from the file server according to the received file identification information, and outputs the change information to the client end, so that the user performs service processingaccording to the change information and the service processing information. The technical proposal of the invention can timely publish the insurance policy service data to be processed to the clientfor processing through the mode of subscribing data by the user, so as to improve the processing efficiency of the insurance policy service data.

The invention discloses a multipoint pre-aiming LQR transverse control method based on a Fiala brush tire model. The method comprises the steps that 1, establishing a vehicle two-degree-of-freedom kinetic model and a tracking error model based on a vehicle striking center; 2, establishing a state space equation of the system; 3, combining the path curvature serving as disturbance quantity with a state vector of the system to construct an augmented LQR control problem; 4, solving a Riccati equation of the augmented LQR system to obtain an optimal feedforward control quantity and an optimal feedback control quantity; and 5, utilizing the obtained optimal control quantity, namely the front wheel lateral deviation force. According to the invention, curvature information of a plurality of roadpoints can be pre-aimed through the LQR controller in a limited time domain; in addition, the front wheel lateral deviation force can be restrained through the front wheel rotating angle under the condition that the vehicle has large transverse acceleration, so that the vehicle can keep good transverse stability and path tracking precision, and the situation that the vehicle is unstable due to tire force saturation under the limit working condition is avoided.

The invention discloses a male joint of a coaxial cable connector, which comprises a central conductor, an insulator and an outer conductor, wherein the front end part of the central conductor is provided with a conical protrusion, while the rear end part is a cylinder used for inserting an inner conductor of coaxial cable; the insulator is provided with a through hole; the outer conductor is divided into a front section, a middle section and a rear section; the front section is transited to the middle section through a first step; the first step is provided with a compensating ring; the internal diameter of the middle section is matched with the external diameter of the insulator; the internal diameter of the rear section can be inserted by the coaxial cable; the internal surface of the middle section is transited to the internal surface of the rear section through a second step; the second step is used for axially positioning the insulator; the internal diameter of the through hole of the insulator is matched with the external diameter of the cylinder at the rear end part of the central conductor; and one part of the cylinder at the rear end part of the central conductor is inserted into the through hole of the insulator. The male joint meets the conventional technical standards; the insulator can be directly plugged from a plugging end; one part of the cylinder of the central conductor is inserted into the through hole of the insulator and is stably fixed, so, the male joint is more convenient to assemble.

The present invention pertaining to the field of information security, discloses a method for improving stability of an intelligent key device and an intelligent key device. The method comprises the steps of the intelligent key device establishing a connection with a host computer, opening a first interruption, reporting to the host computer that the intelligent key device is a composite device which at least comprises two virtual units, receiving and analyzing message commands sent by the host computer, closing the first interruption, judging that whether the time needed for processing the message commands exceeds a predetermined time, if true, processing the message commands, opening a second interruption, keeping processing when receiving subsequent message commands or informing the host computer to perform a delay process, closing the second interruption and opening the first interruption; if not, processing the message commands, storing the processing result and opening the first interruption. The intelligent key device comprises a USB interface module, a first interruption module, an intelligent key module and a second interruption module. According to the present invention, stability of communication between the intelligent key device and the computer is improved.

The invention discloses a method for analyzing the quality of a wafer. The method is as follows: a failure distribution pattern of the wafer is determined through the following judgments and then the quality of the wafer is analyzed according to the failure distribution pattern of the wafer: firstly, judgment is made whether the good product ratio of a whole box of wafers is lower than a set value and whether the result under a test item is within a set range; secondly, judgment is made whether the failure crystal grain distribution condition of the whole box of the wafers under the test item belongs to a known failure distribution pattern; thirdly, judgment is made whether a determined retention pattern of the whole box of the wafers occurs during the process of failure crystal grain distribution of the whole box of the wafers under the test item; fourthly, judgment is made whether a determined retention pattern of a single wafer occurs during the process of failure crystal grain distribution of the single wafer. The method for analyzing the quality of the wafer is objective and short in analysis time.

The invention belongs to the preparation and application fields of chlorine dioxide, and particularly relates to a continuous production device of composite chlorine dioxide and a technology. Multi-stage reaction is adopted in the method so as to make alkali metal chlorate and hydrochloric acid react sequentially in environments with different acidities and temperatures, and the raw material conversion rate and the purity of the chlorine dioxide are greatly increased; a purifier is adopted to greatly reduce chlorate and chlorite which enter water; the problems of gas-water mixed transportation and multi adding point distribution are solved via gas-liquid separation; and the absorption and the addition of a water injector are separated so as to ensure the stable running of the device.

The invention relates to the technical field of rotation tables, and discloses an artificial intelligence rotation table being capable of automatically rotating and provided with a support structure. The artificial intelligence rotation table comprises a support plate, wherein a table top is fixedly mounted on the top of the support plate, a rotation table positioned above the table top is rotatably mounted inside the support plate through a drive device, the bottoms of the two sides of the rotation table are movably connected with the upper surface of the table top through support devices, the drive device comprises a servo motor fixedly mounted inside the support plate, and an output shaft of the servo motor is fixedly connected with one end of a rotation shaft. The artificial intelligence rotation table being capable of automatically rotating and provided with the support structure is simple in structure and is practicable, time and labor are saved, meanwhile, the phenomenon that the weight of dishes causes the uneven stress of the rotation table, consequently, the rotation table inclines, is avoided, the situation that the rotation table is unsteady during rotation is prevented, the spilling of dishes is prevented, then the cleaning for the table top later is easy, and meanwhile, dishes are saved.

The embodiment of the invention provides a video target detection method and device and image processing equipment. a MaskRCNN network is pre-stored in the equipment, and the equipment comprises a CNNmodel, an RPN, a detection branch and an embedded branch. The image processing device inputs the current image frame into a CNN model for the current image frame of the to-be-detected video to obtaina first feature map; the first feature map is input into an RPN to obtain a plurality of candidate regions, the candidate regions being regions including a to-be-detected target; For each obtained candidate area, the embedded branch generates a first vector corresponding to the candidate area, whether a second vector similar to the first vector exists or not is searched for in a stored embedded list, and if yes, the first vector is updated; And the detection branch predicts the position of the candidate region by taking the updated first vector as time sequence information.

The invention discloses a visual positioning method and device. The method comprises the steps of: obtaining videos acquired by the image sensor; determining visual positioning information corresponding to each frame of image in the video and an acquisition pose transformation relationship of an image sensor corresponding to each frame of image; and optimizing the visual positioning information corresponding to each frame of image by taking the acquisition pose transformation relationship corresponding to each frame of image as an edge constraint, and determining a visual positioning result when the image sensor acquires the video according to an imaging processing result. Compared to the prior art, the visual positioning information corresponding to each frame of image in the video of thespecification meets the collection pose transformation relationship corresponding to each frame of image, the visual positioning result, determined according to the image optimization result, of theimage sensor is more accurate, the problem that the visual positioning results corresponding to a plurality of frames of images collected at the same position are large in difference is solved, and the situation that the positioning results at the same position are unstable is avoided.

The invention relates to a method and a device for washing a compressor flow passage of a gas-steam combined generating set. The method is characterized in that 1, according to an operating manner and an operating state of the gas-steam combined generating set, a data acquisition unit automatically leads out start-stop times, operating time and compressor efficiency from an SIS (Supervisory Information System of whole plant) system and summarizes the start-stop times, the operating time and the compressor efficiency into a basic data table; 2, the SIS system is connected with a field unit DCS (Distributed Control System) to acquire field data; 3, the basic data table is applied to complete a decline curve of working efficiency of a compressor by an optimization computation unit and by comparing historical data of washing the compressor and according to the historical data of washing the compressor, the optimal washing water pressure, washing water temperature and washing water flow of the compressor flow passage are formulated; and 4, by comparing the historical data of washing the compressor and according to the historical data of washing the compressor, washing operating detailed rules of the compressor flow passage are made, so that the method for washing the compressor flow passage of the gas-steam combined generating set is determined. The method and the device have the characteristic of simple hardware structure; the condition of an unstable data source can be avoided; data accuracy is ensured; and a good washing effect is ensured.

The invention relates to a method and a device capable of effectively reducing SiC single crystal defects, belongs to the field of crystal preparation, and aims to overcome the defect of low raw material utilization rate in the existing SiC preparation process. The device comprises a crucible, a seed crystal and a flow guide cover, the crucible comprises a crucible cover and a crucible main body, a raw material area is arranged in the crucible main body, the flow guide cover is installed on the inner wall of the crucible body through a boss and located above the raw material area, the seed crystal is fixed to the inner side of the crucible cover and located in an opening in the top of the flow guide cover, the raw material area is filled with a first silicon carbide raw material and a second silicon carbide raw material which are different in particle size, the first silicon carbide raw material and the second silicon carbide raw material are separated by an annular graphite filter screen, the first silicon carbide raw material is positioned inside the annular graphite filter screen, and the second silicon carbide raw material is positioned on the periphery of the annular graphite filter screen; and graphite flakes are arranged on the outer side of the flow guide cover and are adhered to the inner walls of the crucible main body and the crucible cover. The raw material utilization rate is improved by filling silicon carbide raw materials with different pore diameters.

A full-dimensional distribution network loop closure evaluation method includes establishing an analysis model of loop closure operation of a distribution network; calculating the voltage deviation ofeach bus bar before and after loop closure, the setting value of protection current after loop closure and the thermal stability limit value of equipment according to the established loop closure operation analysis model; when the voltage deviation of each bus bar before and after loop closure, the setting value of protection current after loop closure and the thermal stability limit value of equipment meet the requirements of loop closure, allowing loop closure. The transient and steady-state faults are analyzed and checked in the closed-loop state. If the fault can be removed, the closed-loop operation analysis model of distribution network is controllable. The method avoids the instability of the power network caused by loop closure, so as to ensure the interests of users, reduce poweroutage losses, effectively improve the reliability of power supply, and improve the safe and economic operation level of distribution network; at the same time, the efficiency of the switchover operator can be improved.

The invention relates to the technical field of mixed control, and particularly discloses a mixed control method of a mechanical arm. The mixed control method comprises the steps that the contact force between the executing end of the mechanical arm and a workpiece to be machined is acquired; whether the contact force is larger than a switching threshold value or not is judged; if the contact force is larger than the switching threshold value, a first control signal is output to a force controller, wherein the force controller is used for achieving force control over the executing end of the mechanical arm according to the first control signal; and if the contact is equal to the switching threshold value, a second control signal is output to a position controller, wherein the position controller is used for keeping current position control over the executing end of the mechanical arm according to the second control signal. The invention further discloses a mixed control device and system of the mechanical arm. According to the mixed control method of the mechanical arm, the problem of unstable operation in the prior art can be effectively solved, and the advantages of being preventing trembling of the mechanical arm and prolonging the service life of the mechanical arm are achieved.

The invention provides a combination-type slope surface flow testing device. The combination-type slope surface flow testing device comprises a slope surface water tank which is supported by supporting columns to form an oblique structure. The combination-type slope surface flow testing device further comprises movable panels and connectors matched with the movable panels, anti-lip strips are arranged on an opening of a water inlet end and an opening of a water outlet end of the slope surface water tank and a bottom board of the water outlet end, the movable panels are connected with the connectors matched with the movable panels to form a combination slope surface and the combination slope surface is laid on the bottom board of the slope surface water tank. A slope surface flow test can be conducted with the device, the reuse rate of artificial vegetation can be increased, the service life of the slope surface water tank is prolonged, various slope surface conditions can be quickly replaced, and the time cost and the economic cost of the slope surface flow test are reduced.

The invention discloses a multifunctional experimental device for prestressed concrete resistance and relates to the technical field of prestressed concrete. The multifunctional experimental device comprises a compression testing machine and a base, wherein a plurality of universal wheels and a plurality of supporting mechanisms are fixed on one surface of the base; a protective shell is arrangedon the compression testing machine; the compression testing machine comprises an electric control box and a U-shaped frame; a lead screw lifting mechanism is arranged on one side face of the U-shapedframe; an oil cylinder mechanism is arranged on the other side of the U-shaped frame. The multifunctional experimental device disclosed by the invention is moved by using a handle and the universal wheels; the vibration generated by spring buffer is utilized and electric telescopic rods are used to drive corresponding supporting plates to downward move to support the base, and further the aim of stabilizing is achieved; a storage battery is used for supplying power to the compression testing machine and the electric telescopic rods; meanwhile, oil is changed and replenished by using oil pipesinside oil storage tanks and an oil pipe putting tank; the problems that an existing prestressed concrete resistance experiment device is inconvenient to move and the stability of the experimental device with the universal wheels cannot be ensured are solved.

The invention relates to a running vehicle body which arranges a cutting notch into which a left-right central portion of a relay connecting rod component on a piston rod, and arranges a connection shaft connected with the piston rod and upper and lower directions of the relay connecting rod component; the piston rod communicated with the connection shaft or the relay connecting rod component is provided with a first hole with the diameter of aperture being larger than the diameter of the connection shaft; the relay connecting rod component is provided with a front face that left and right two end parts at bottom surface of the cutting notch contact with the front side of the relay connecting rod component and move backwards along with the backward movement of the bottom surface; the relay connecting rod component is also provided with left and right connection parts which enable the left and right connecting rod to communicate between the left and right two ends of the relay connecting rod component; the left and right connection parts of the left and right connecting rods that are communicated respectively are provided with second holes with the diameter of aperture being larger than the diameter of the connection shaft; left-right compression springs are respectively provided between the left and right connection parts as well as at left and right fixing fixtures of the rear end part of the left and right connecting rods.

The invention discloses a knitting fabric drying machine, which comprises a work table, wherein a fixing rod, a protection box and a fixing plate are sequentially and fixedly connected onto the top of the work table from left side to right side; a support plate is fixedly connected onto the bottom of an inner cavity of the work table; fans are fixedly connected to the two sides of the top of the support plate. Through the arrangement and the matched use of the support plate, a first heat conduction plate, the fan, a support post, a fixing block, the fixing rod, fan blades, a first rolling tube, a first motor, a fabric, a second heat conduction plate, an air outlet, a second rolling tube, a second motor, the fixing plate, a guide wheel, a rotating shaft, a heating machine, a heat transfer rod and a third heat conduction plate, the knitting cleaned fabric is effectively dried; the problem of drapes generated by the fabric in the transportation and storage process when the existing knitting drying machine is used is solved, so that the production efficiency of the knitting fabric is improved; meanwhile, the practical performance of the drying machine is also improved; the knitting fabric drying machine is suitable for being popularized and used.

The invention discloses a method and a device for realizing automatic gain control (AGC). The method comprises the steps that after a mobile terminal receives a downlink signal, whether the received downlink signal is a burst signal or not is judged, if so, a latest correct automatic gain control value is used for controlling a gain amplification device to amplify gain when a next cycle comes, and if not, an automatic gain control value which is obtained through calculation is used as a correct automatic gain control value, and is used for controlling the gain amplification device to amplify the gain when the next cycle comes. By judging the burst signal to determine the proper automatic gain control value, the situation that the AGC value is unstable caused by the burst signal is avoided and the receiving performance of a mobile terminal receiver is optimized.

The invention discloses a multi-channel single-protein magnetic tweezer measurement and control method and system, the method comprises the steps of: first preparing a protein sample, identifying a plurality of microbeads to be tracked in a field of view by automatic detection or manual intervention, and simultaneously selecting an appropriate reference microbead; then controlling lifting and rotation of a magnet by a motor to control the sizes of stress and torque of the microbeads in the sample, performing real-time display after correction, measuring the three-dimensional coordinates of themulti-channel microbeads by a microbead positioning and tracking technology, displaying in real time the real-time change of the length of a protein fastening the microbeads through the waveform; storing the corrected real-time displayed sizes of the stress and the torque of the microbeads and the real-time displayed length of the protein, after the plurality of microbeads to be tracked in the field of view are completely collected and processed, changing to a next field of view of the sample, and repeating the above steps to measure the mechanical properties of the molecule of the protein. The method can realize simultaneous fast sampling of a plurality of research objects and realize high-throughput measurement.

The invention relates to the technical field of glass processing, and discloses an efficient glass edge grinding device with a protection function. The efficient glass edge grinding device comprises aworking table, wherein a cross column is fixedly arranged at the top of the working table, the top of the cross column is fixedly provided with a slag groove, the top of the cross column is fixedly connected with a machine case, a first motor is fixedly installed inside the machine case, and an output shaft of the first motor is fixedly connected with a rotating shaft. The efficient glass edge grinding device with the protection function effectively improves the stability of glass clamping, the glass can be adjusted according to the glass with different thicknesses, the application range is widened, the grinding of the glass is finer, so that the grinding quality of the glass is improved, the grinding efficiency is greatly improved, the safety performance of the grinding device can be improved, so that the self protection performance is improved, and accidental damage to workers caused by unstable potential safety hazards is avoided.

According to a pile periphery scouring protection device and method for an offshore wind power single pile foundation, a protection shell of an annular curved surface body structure is annularly arranged on the outer side of the to-be-protected single pile foundation, the lower end of the protection shell makes contact with and is fixed to a seabed, and a stable protection structure is formed on the outer side of the to-be-protected single pile foundation, the generation of pile periphery vortex can be effectively reduced, the extreme flow velocity of pile periphery water flow is further reduced, stone is prevented from colliding with the single-pile foundation when the stones are thrown and filled at a closer position, powerful protection for the single-pile foundation is formed. The section of the protection shell along the axis of the protection shell is of a hyperbolic curve structure, throwing and filling stone is arranged on the outer side of the protective shell, the stone is effectively utilized to form pressure on the outer side of the curved surface of the protection shell, the protection shell is pressed on the seabed, and loosening caused by disturbance of seawater is prevented; and meanwhile, the upper end of the protection shell is located below the sea level, so that the protection shell is prevented from being scoured by the sea level, and the situation that the protection shell is unstable due to the fact that the protective shell is too high is avoided.

The invention discloses an easy-to-pre-maintain LED (light-emitting diode) display screen module structure, comprising a module backboard, wherein the module backboard is fixed with an LED display screen box body, and a PCB (printed circuit board) is fixed on the front end surface of the module backboard; an LED lamp is arranged on the PCB; the easy-to-pre-maintain LED display screen module structure is characterized in that a plurality of accommodating spaces for accommodating magnetic fixing elements are formed in the module backboard; a groove which is used for clamping and limiting is formed in at least one wall surface of each accommodating space; the depth of each groove is 0.1-0.5mm; an insulating layer is also arranged between the module backboard and the PCB. The easy-to-pre-maintain LED display screen module structure has the advantages of being simple, stably fixed with the LED display screen box body, and convenient to install and dismantle.

The invention relates to a data processing technology, and discloses a data transmission method, which comprises the following steps of: performing batch processing on a data set to be transmitted, and uploading the batched data to preset message middleware for queue generation processing to obtain a standard message queue; grouping and packaging the standard message queues, and issuing the packaged standard message queues to a plurality of servers for idle instance operation to obtain a standard data set; writing the standard data set into a preset file, and uploading the file to a file storage server; and performing data verification processing on the file in the file storage server, and when the data verification is passed, sending the data in the file to the target database. In addition, the invention also relates to a block chain technology, and the standard message queue can be stored in a node of a block chain. The invention further provides a data transmission device, electronic equipment and a computer readable storage medium. According to the invention, the problem of low stability of data transmission can be solved.

The present invention discloses an efficient push-pull network connector. The connector comprises a first fixed seat and a second fixed seat; a connection seat is installed at a right side of the internal portion of the first fixed seat, and a connection head is installed at a left side of the second fixed seat; first wiring heads are arranged at the lower portion of the internal portion of the connection seat, and second wiring heads are arranged at the lower portion of the first wiring heads; latches are arranged at the left side surface of the connection head, and second magnet rings are installed at the left side of the internal portion of the connection head; movable blocks are respectively arranged at front and back sides of the external portion of the connection seat, and connectionrods are respectively arranged between each movable block and the connection seat; and springs are installed at the internal portions of the movable blocks. The efficient push-pull network connectoremploys a detachable installation mode to allow users to conveniently replace parts in the device, the device is provided with fixed structures at various positions to ensure a loosening condition when the connection seat and the connection head are installed so as to avoid a condition that network connection is not stable.

This oscillating axle (3) for a lifting device (1) comprises an axle bridge (5) at the ends of which are mounted two ground connection members (7), an oscillation axis (X3), a left jack (9) and a right jack (11), each jack (9, 11) having a rod (90, 110) in contact with the bridge (5) and a body (92, 112) fixed on a fixed part (13) of a chassis (2) of the lifting device (1), the body (92, 112) forming a chamber (94, 114) in which the rod (90, 110) moves. The axle comprises a hydraulic circuit (15) interconnecting the chambers (92, 112) of the left (9) and right (11) jacks, in which a fluid is present at a given pressure, making it possible to press the rods (90, 110) of the left jack (9) and of the right jack (11) against the bridge (5), and at least one solenoid valve (150, 152) on a branch (15A) of the hydraulic circuit (15) connected to the chamber (94) of the left jack (9), and at least one solenoid valve (154, 156) on a branch (15B) of the hydraulic circuit (15) connected to the chamber (114) of the right jack (11), wherein each of these solenoid valves (150, 152, 154, 156) may be positioned in an open position, in which fluid may flow freely, and a closed position, in which the fluid is trapped in the chamber (94, 114) of the corresponding jack (9, 11). Each of the chambers (94, 114) of the left jack (9) and of the right jack (11) has a pressure sensor (23, 25) designed to measure the pressure of the fluid in each of the chambers (94, 114). Control means (21) are provided to detect a pressure in one of the chambers (94, 114) that is greater than a first threshold, and / or a differential between the pressures in each of the chambers (94, 114) that is greater than a second threshold, so as to detect the blocking of a solenoid valve (150, 152, 154, 156) in the closed position, and to initiate a safety procedure.

The invention discloses an automobile engine compartment noise detection device, relates to the technical field of NVH (Noise, Vibration and Harshness) test of automobiles, and solves the problem of tediousness of readjusting the position of a noise acquirer before each noise detection in a process of detecting noise of an automobile engine compartment in the prior art, so as to improve the detection efficiency. The automobile engine compartment noise detection device comprises a lifting mechanism, multiple noise acquirers, a fixed stand and a movable supporting piece; the lifting mechanism ismounted above a detection table; the fixed stand is controlled to rise up and drop down through the lifting mechanism; the multiple noise acquirers are distributed and mounted on the fixed stand; andone end of the movable supporting piece is hinged and fixed to a side surface wall body of the detection table, and the other end of the movable supporting piece is detachably connected with the fixed stand.

The invention discloses a textile winding device with automatic leveling and cleaning functions, which comprises a support platform and a top plate, both sides of the top of the support platform are fixedly connected with support frames, and the tops of the two support frames are respectively connected to the two sides of the bottom of the top plate Fixed connection, the top of the top plate is fixedly connected with five return springs, the tops of the five return springs are fixedly connected with buffer seats, and the tops of the five buffer seats are fixedly connected with the bottom of the buffer table, the top of the buffer table, etc. There are five buffer columns fixedly connected at a distance, and brushes are fixedly connected to the tops of the five buffer columns. The textile winding device with automatic leveling and cleaning functions, by setting the cloth guide roller and the cloth take-up roller, the user can put the textile to be wound on the cloth guide roller, when the cloth guide roller and the cloth take-up roller rotate The textile will be rewinded. During the rewinding process, the outer surface of the textile can be automatically cleaned through the combined use of the buffer table, buffer column and brush.

The invention discloses an urban road pavement structure which comprises a drainage layer, a support layer, a foundation layer, a drainage degradation layer and a drainage cooling system. The supportlayer is directly paved on an urban road foundation and comprises a plurality of laminated metal perforated plates and gravel arranged between the metal perforated plates in a filling manner; the drainage layer is arranged below the support layer and is inserted into the urban road foundation; the foundation layer is arranged above the support layer and sinks along the middle portion of the uppersurface of a road in the length direction in an inclined downward manner, the longitudinal section of the foundation layer is in an isosceles trapezoid shape with the large upper portion and the smalllower portion; the drainage degradation layer is arranged above the foundation layer, and the upper surface of the drainage degradation layer is horizontal; and the drainage cooling system comprisesa heat exchange tube, a heat exchange main chamber, and a vertical tube, a pipe cap and a water storage tank; the middle portion of the upper portion of the water storage tank is provided with an opening, and the opening is opposite to the sinking position of the upper surface of the foundation layer. The pavement structure has good stability, has good water permeability and water storage performance and has high pavement high temperature deformation resistance.

The invention discloses a computer table with a lifting function, which includes a workbench, a first support rod and a second support rod are fixedly connected to the top of the workbench from left to right in sequence, and the inner chamber of the first support rod A rotating shaft is arranged transversely at the bottom, and the left side of the rotating shaft penetrates to the outside of the first support rod and is fixedly connected with a connecting rod. The present invention is provided with a table board, a fixed block, a horizontal plate, a second support bar, a first chute, a first slide block, a first slide bar, a connecting rod, a handle, a support plate, a second slide block, and a second chute , the second slide bar, the tooth plate, the rotating shaft and the gear are used together to effectively lift the computer desk, which solves the problem that the existing computer desk is used due to the differences in the user's height, weight and gender. The problem of poor comfort during work reduces labor loss, facilitates the use of users, improves the practicability of the computer desk, and is suitable for popularization and use.