125results about "Embedding pads" patented technology

The invention discloses a comprehensive design method for an anti-freezing pavement of a highway in a high-altitude severe cold area, relates to the technical field of road engineering, and solves the problems of high energy consumption, short service life, unfriendly environment or poor system reliability and the like generally existing in the prior art. And the design of combining structures, materials, energy and intelligent control is lacked. A comprehensive design method for an anti-freezing pavement of a highway in a high-altitude severe cold area comprises the following steps that S1, a multi-layer composite pavement structure is constructed, and the multi-layer composite pavement structure is composed of an anti-sliding and ice-inhibiting functional layer, an energy active layer and a heat preservation structure layer from top to bottom; and S2, a distributed state sensing network is arranged in the multi-layer composite pavement structure and on the roadside of the multi-layer composite pavement structure. Passive ice suppression, active ice melting, intelligent sensing and green energy are organically integrated to form a complete'sensing-decision-execution-energy supply 'closed-loop system, and the limitation of a single technology is broken through.

A sensor network comprises at least one lateral optical fiber and at least one longitudinal optical fiber. The lateral fiber comprises optical sensors coupled to a pavement in a transverse orientation relative to a direction of vehicle travel along the pavement. The longitudinal fiber comprises optical sensors coupled to the pavement in a longitudinal orientation relative to the direction of vehicle travel. The optical sensors are configured to produce wavelength shift signals comprising one or more lateral strain signals associated with the lateral fiber and one or more tangential strain signals associated with the longitudinal fiber. A processor is operatively coupled to the sensor network and configured to determine a weight of vehicles moving along the pavement based on the lateral and tangential strain signals. A transmitter is operatively coupled to the processor and configured to transmit the weight of vehicles to a predetermined location.

A magnetic marker is embedded in a road, and is configured to be detected by a magnetic sensor provided in a vehicle. The magnetic marker is provided with a case accommodating a magnet and a protective material covering the magnet, and an anchor that is provided protruding downward from the case and that is configured to expand in diameter in a state of being embedded in the road.

The invention relates to the technical field of intelligent traffic equipment, in particular to an induction blind sidewalk brick, a trigger type tactile stick and a blind sidewalk cooperation system. The sensing blind sidewalk brick comprises a blind sidewalk brick body and a sensing device, wherein a cavity is formed in the blind sidewalk brick body; the trigger device is arranged on the blind sidewalk brick body and is used for receiving a trigger signal triggered by short-distance wireless induction; the sensing device is arranged in the cavity and is in signal connection with the triggering device, and the sensing device sends out a warning signal after the triggering device receives the triggering signal; wherein the trigger device is a tactile stick trigger device; a trigger signal triggered by short-distance wireless induction is sent out by the tactile stick. According to the tactile stick, a point-to-point identification relation is established through close-range induction (magnetism, metal and radio frequency), and the effect that the brick responds only when a visually impaired person carrying the tactile stick arrives is achieved; the selective triggering suppresses broadcast flooding caused by scene noise (raindrops, footsteps, baby carriages and the like), so that information fatigue and urban noise pollution are avoided.

A wireless power transfer transmitter system and a method of constructing an asphalt pavement containing the wireless power transfer transmitter system are provided. The present disclosure allows future rehabilitation of the asphalt pavement. The construction method includes: forming a channel in a layer of a drivable civil structure; forming a magnetizable asphalt mixture in the channel, the magnetizable asphalt mixture including an asphalt binding substance and magnetizable particles; and placing a pre-manufactured transmitter coil or a pre-manufactured transmitter coil assembly in the magnetizable asphalt mixture. The pre-manufactured transmitter coil assembly includes a transmitter coil and a holder, which may or may not be permanently installed in the pavement, a part of the transmitter coil is installed in the holder, and 0 to 90 percent of the transmitter coil is embedded in the magnetizable asphalt mixture.

The invention relates to a construction method of a self-sensing asphalt concrete pavement structure, which comprises the following steps: mixing natural mineral aggregate with wood biomass, and carrying out high-temperature treatment under the protection of nitrogen to form a graphitized carbon layer to obtain low-resistance aggregate with the resistivity of less than or equal to 1 * 10 <-3 > omega.m; the low-resistance-value aggregate is used for replacing the conventional aggregate according to the mass ratio of 70-90%, and a conductive asphalt mixture is prepared; a conductive asphalt mixture is used for paving a pavement, and an electrode slice is arranged to be connected with monitoring equipment. Under the action of the vehicle load, the change of the contact state among aggregates causes real-time change of the road surface resistance value. Compared with the prior art, the method has the advantages that sensitivity response of 0.5-5 omega / KN is generated by utilizing the fact that the contact resistance of the graphitized carbon layer fluctuates within the range of 0.1-100 omega, when the abnormal drifting of the resistance is larger than 15% or waveform distortion occurs, the fatigue crack propagation critical point can be judged, and therefore the asphalt concrete road structure is endowed with the intelligent self-sensing function.

The application relates to the technical field of road snow-melting and ice-melting, in particular to a snow-melting and ice-melting system and a construction method, the snow-melting and ice-melting system comprising a temperature measuring optical fiber, a DTS host, a control end, a temperature raising device and a water storage device; the temperature measuring optical fiber is laid on the upper layer of a road surface to realize real-time detection of the temperature of the road surface on the path; the temperature raising device is arranged between the road surface and a road surface heat preservation layer, the temperature raising device comprises a water inlet and a water outlet which are communicated with an inner chamber of the temperature raising device; the water storage device is connected with the water inlet and the water outlet; a signal input end of the DTS host is connected with the temperature measuring optical fiber, and a signal output end is connected with the control end; when the temperature value of the temperature measuring optical fiber obtained by the DTS host reaches an icing temperature boundary value, a temperature raising signal is sent to the control end, and the control end controls the water storage device to circulate and pass in hot conductive water into the chamber according to the temperature raising signal. The snow-melting and ice-melting system and the construction method solve the problems that the existing road snow-melting and ice-melting mode has poor effect and causes environmental pollution.

A vehicle-oriented system (1), which uses an information provision region (11) provided on a plane on which a vehicle (5) travels, provides information to the vehicle (5), and can provide information by a magnetic method, regardless of the direction of travel of the vehicle (5), as a result of: having magnetic distribution formed in the information provision region (11), said magnetic distribution indicating information by using a plurality of N-pole magnetic markers (10N); and having a marker (100) for identifying the position and direction of the information provision region (11), provided in the information provision region (11).

A road deflection and curvature monitoring device comprises curvature monitoring plates and a data acquisition terminal, the curvature monitoring plates are provided with a plurality of tilt angle sensors, power lines and data lines of the tilt angle sensors are connected with the data acquisition terminal, and the curvature monitoring plates are arranged below the road ground and on the two sides of the transverse road width. The data acquisition terminal is arranged on any side of the two side surfaces of a road. The method has the advantages that a road longitudinal curvature real-time curve, a curvature variation thermodynamic diagram and a three-dimensional deformation trend chart can be directly output, when the curvature variation exceeds a threshold value, an alarm is automatically given, hidden dangers such as pavement settlement, upheaval and collapse can be found 15-60 days ahead of time, and the active safety early warning capacity and the emergency disposal efficiency of the road are remarkably improved.

The invention discloses an asphalt pavement embedded sensor embedding method based on a preset occupying body. The method comprises the following steps: fixing a variable cross-section composite structure preset occupying body on a pavement structure layer through a self-locking anchoring system; taking out the placeholder by using a multifunctional extraction tool, and realizing submillimeter positioning of the sensor through a three-dimensional laser positioning system; step-type curing colloid is injected to ensure position stability; a resin-based composite material protection corrugated pipe and a controllable degradation protection layer containing a phase change material are adopted to carry out omnibearing protection on the sensor and a signal line; and uniform stress distribution is formed through layered backfilling and compaction according to the original pavement structure. According to the invention, the survival rate, the positioning precision and the construction efficiency of the sensor are remarkably improved, the technical problem of sensor layout in a high-temperature and high-pressure environment is solved, and long-term performance monitoring requirements are met.

The invention provides a cross-season bridge floor snow melting system based on phase change energy storage and a ground source heat pump, and belongs to the technical field of ground source heat pumps and energy underground structures. The system is composed of a pile body, a pile buried pipe, a phase change energy storage pipe, an annular diversion cover plate, a bridge floor snow melting pipe, a heat pump, a circulating pump, an electromagnetic three-way valve, a valve, a temperature and humidity sensor, a pressure sensor, a monitoring system and a control system. According to the system, the pile buried pipe, the phase change energy storage pipe and the bridge floor snow melting pipe are integrated through the energy pile, the synergistic effect of geothermal energy and phase change energy storage is achieved through the electromagnetic three-way valve and the intelligent control technology, bridge floor snow melting is conducted, and the cross-season energy storage function of storing energy in summer and taking heat in winter is effectively achieved. The system can quickly respond to snowfall requirements, automatically convert snow melting modes, reduce energy consumption, and solve the problems of high energy consumption, thermal response lag, uneven heat distribution and the like of a common bridge surface snow melting system.

The invention belongs to the technical field of highway supervision, and particularly relates to a displacement deformation detection system suitable for a highway pavement, which comprises a highway sectional monitoring module, a displacement deformation analysis output module, a highway traffic safety analysis module, a highway field patrol reminding module and a highway early warning management end, according to the invention, the displacement deformation analysis output module carries out analysis based on a displacement curve so as to accurately judge the displacement condition of each subsection of the highway pavement, and the highway traffic safety analysis module analyzes the traffic safety of the highway pavement. The highway field patrol necessity is analyzed through the highway field patrol reminding module when the highway traffic safety signal is generated, the highway pavement is patrolled and reasonable improvement measures are taken when the highway traffic alarm signal or the highway patrol reminding signal is generated, the traffic hidden danger of the highway pavement is obviously reduced, and the highway management difficulty is reduced.

The invention relates to a subsea tunnel entrance self-adaptive shading shed and a multi-dimensional rhythm induction system, the subsea tunnel entrance self-adaptive shading shed comprises a shading shed and a ceiling which are connected into a whole, the shading shed is arranged at a subsea tunnel entrance, and the ceiling is arranged at the top of a subsea tunnel. The system further comprises an upper optical rhythm shading shed induction device, a middle lower side wall dynamic rhythm device, a road surface induction device and a multi-mode sensing device. The upper optical rhythm shading shed induction device is arranged on a shading shed and extends to a ceiling, the lower middle side wall dynamic rhythm device is arranged on the side wall of the front end of an entrance of a subsea tunnel and extends to the side wall in the subsea tunnel, and the road surface induction device is arranged on the ground of the front end of the entrance of the subsea tunnel and extends to the ground of the subsea tunnel. And the multi-mode sensing device is arranged on the ground at the entrance of the subsea tunnel. According to the invention, smooth transition of the visual field brightness of the driver, speed adaptive adjustment and attention focusing are realized, and the target of reducing the traffic accident rate of the tunnel entrance section is finally achieved.

The invention belongs to an intelligent highway pavement structure based on a self-sensing asphalt material and a monitoring system of the intelligent highway pavement structure, and discloses the intelligent highway pavement structure based on the self-sensing asphalt material and the monitoring system of the intelligent highway pavement structure. A pavement structural surface layer is made of a self-sensing asphalt mixture containing an amorphous silicon-based composite functional phase, the functional phase is prepared through a specific process, a nano bowl-shaped array is arranged on the surface of the functional phase, tungsten carbide nano crystal nucleuses are coated on the surface of the functional phase, and the functional phase and asphaltene form a non-equilibrium electron cloud overlapping system. The monitoring system is based on a non-contact microwave resonant cavity coupling principle, analyzes reflected signals, extracts characteristic vectors, and inverts real-time stress, strain, damage factors and temperature state parameters in combination with an inverse problem solver. A traditional sensor pre-embedding mode is abandoned, the pavement body and the sensing function are fused, the problems of implantation damage, life mismatching, low spatial resolution and the like are solved, and a new normal form is provided for intelligent road safety early warning and full-life management.

The present application belongs to the field of geothermal energy development and utilization, bridge engineering, and deicing and snow melting technology, and proposes a heat exchange pipe maintenance and intelligent operation and maintenance control method for an energy pile active bridge deck deicing and snow melting system, which comprises an energy pile active bridge deck deicing and snow melting federated learning operation and maintenance control model and a heat exchange pipe maintenance device based on electromagnetic induction principle; the energy pile active bridge deck deicing and snow melting federated learning operation and maintenance control model preliminarily judges and makes alarm positioning, and the heat exchange pipe maintenance device based on electromagnetic induction principle carries out fine repair work; the damaged point is repaired by automatic repair agent or the inner layer pipe is unscrewed. The heat exchange pipe maintenance device based on electromagnetic induction principle comprises a double-layer intelligent heat exchange pipe structure, a micro magneto-electric sensor, a cable storage tray, a data automatic acquisition instrument and a control end. The present application realizes fine control management and early warning of the energy pile active bridge deck deicing and snow melting system, accurately positions and repairs the damaged point, globally and accurately controls the snow melting system, and improves the deicing and snow melting efficiency.

The utility model discloses an anti-slip structure of a large-gradient ski track, which relates to the technical field of gradient construction and is arranged on the surface of first precast concrete of the ski track, an L-shaped mounting frame is arranged on the first precast concrete, a plurality of structural steel bars are welded on one side of the mounting frame at equal intervals, and a connecting plate is fixedly connected to one side, far away from the structural steel bars, of the mounting frame. A first expansion bolt is arranged on the connecting plate, a second expansion bolt is arranged on the mounting frame, and moisture-proof isolation expansion sleeves are arranged at the bottoms of the first expansion bolt and the second expansion bolt. According to the utility model, the height and the width of the mounting rack can be customized according to use requirements on the concrete outer surface part of the poured skiing channel through the mutual matching among the mounting rack, the structural steel bars and the connecting plates, and the mounting rack, the connecting plates, the expansion bolts and the expansion pipes are matched with one another, so that the mounting is convenient and fast; therefore, the construction period is effectively shortened, and on-site traffic is not affected.

The invention discloses a real-time monitoring feedback system and device for long-term operation and maintenance of a tunnel in the technical field of tunnel management, and the system comprises a tunnel foundation and a road surface alarm, a top protection plate is arranged at the top in the tunnel foundation, side protection plates are arranged in two side walls in the tunnel foundation, a first sensor group is arranged on one side of the outer wall of the top protection plate, and a second sensor group is arranged on the other side of the outer wall of the top protection plate. A tail gas remote sensing detection system and a vehicle speed detection module are arranged on one side of the inner wall of the side protection plate. According to the tunnel maintenance equipment, the top protection plate and the side protection plate are arranged in the traditional tunnel maintenance equipment, the tunnel operation sensor, the monitoring unit, the detection equipment and the display screen assembly are packaged in the top protection plate and the side protection plate, and the top protection plate and the side protection plate are uniformly distributed in the tunnel, so that complete detection of each area of the tunnel is realized; and the tunnel area detection data is uniformly sent to the server side by the wire slot and the wireless transceiver, so that uniform regulation and management are realized, and the management efficiency of workers is improved.

Vehicle control system comprising: - a smart cell that is capable of storing and transmitting information on the state of the road surface - a control module comprised in a vehicle and the control module of the vehicle modifying the operating parameters of said vehicle based on the information transmitted by the smart cell.

The utility model relates to the technical field of early warning structures, and provides a linkage device and a linkage system for sensing road structure deformation, the device comprises a connecting cable, the connecting cable is arranged along a line, both ends of the connecting cable are fixed ends, at least one end of the connecting cable is used for connecting a warning component, and the other end of the connecting cable is used for connecting a warning component. And the two fixed ends are relatively close to each other, so that the connecting cable can trigger the corresponding warning component. According to the device, the displacement condition of a line is obtained through a mechanical mode of installing a section of connecting cable, then the disaster damage condition of the line is sensed and transmitted to the warning component, a mechanical triggering mode is formed, disaster emergency situations such as expressways, bridges and tunnels can be effectively dealt with, power and communication requirements do not exist, and the device is simple in structure and convenient to use. The method is small in dependence on environmental factors, is high in stability, reliability and timeliness, facilitates the improvement of the disaster monitoring and early warning capability of a line, scientifically guides passing vehicles to avoid risks, reduces the disaster loss, and reduces the casualties.

The utility model discloses a stepping stone capable of controlling surrounding landscape lamps through pressure induction, which comprises a pedal, an equipment box is arranged at the lower end of the pedal, a water permeable plate is arranged at the lower end of the equipment box, a self-locking telescopic rod is arranged at the lower end of the water permeable plate, a telescopic cylinder is sleeved at the upper end of the self-locking telescopic rod, and the lower end of the telescopic cylinder is provided with a pressure sensor. And a lantern ring is arranged in the telescopic cylinder. According to the utility model, the surrounding landscape lamps are controlled through pressure sensing, when the stepping stone is used, the self-locking telescopic rod which can be used for lifting is arranged at the bottom end of the stepping stone, the stepping stone and a landscape lamp connecting line in water can be lifted during maintenance to assist subsequent maintenance, and meanwhile, the stepping stone can adapt to different water levels through the lifting, so that the maintenance efficiency is improved. The self-locking telescopic rods are arranged on the self-locking telescopic rods, so that the pedal on the stepping stone is always higher than the water surface, when the stepping stone is treaded on, the reset springs are arranged at the self-locking telescopic rods, and after the stepping stone is treaded on, a downward pressing process can be felt, so that the interestingness is increased, and the stepping stone is more practical and convenient to use.

The invention relates to the technical field of road structures, and discloses an urban road structure which comprises a roadbed layer, a drainage layer, a bearing layer and a functional surface layer, the roadbed layer is formed by compounding and reinforcing graded broken stones and geogrids; the drainage layer is composed of porous concrete, a plurality of longitudinal water guide pipes are pre-buried in the drainage layer in the longitudinal direction at equal intervals, and the longitudinal water guide pipes communicate with a municipal drainage system; the bearing layer is formed by mixing a high-modulus asphalt mixture with 30% of recycled aggregate; the functional surface layer is composed of a data acquisition layer and a wear-resistant layer. In the use process after laying, the pressure / temperature sensor can collect load and environment data in real time and wirelessly transmit the load and environment data to a control center, and the soil recycled aggregate can effectively reduce carbon emission, so that the road structure can improve the drainage efficiency by 40% and has no accumulated water retention under the rainstorm condition; and the temperature of the road surface can be reduced by 8-12 DEG C, and the heat island effect is effectively relieved.

The invention discloses a sensing pad, a sensing device and a monitoring method for monitoring roadbed deformation. The sensing pad comprises a rigid supporting layer, a micro air gap isolation layer, a gradient stiffness composite matrix and a flexible protection layer which are sequentially arranged from bottom to top. The gradient stiffness composite matrix comprises a plurality of fiber reinforced material layers, and the elastic modulus of each fiber reinforced material layer is increased layer by layer from top to bottom, so that disturbance to a roadbed structure when the sensing pad is laid is reduced, and strain transmission in the sensing pad in a working state is amplified; optical fiber longitudinal and transverse grids are distributed in the gradient stiffness composite matrix; the sensing pad further comprises a multi-mode optical fiber sensing unit; the multi-mode optical fiber sensing unit is embedded in the gradient stiffness composite matrix along the optical fiber longitudinal and transverse grids and used for measuring parameters related to roadbed deformation. The device has the advantages of small device structure disturbance, high coupling reliability and abundant monitoring parameters, and is suitable for three-dimensional deformation long-term monitoring of the roadbed.

The application relates to a prefabricated pavement system, a prefabricated plate mold and a preparation method, wherein a main structure of the prefabricated pavement system is a prefabricated plate, a plurality of blind holes are arranged on an upper surface of the prefabricated plate, monitoring devices are arranged in the plurality of blind holes, the monitoring devices can monitor pavement conditions and generate relevant monitoring data, an upper computer is in communication connection with the monitoring devices, and the monitoring devices can transmit the monitoring data to the upper computer. Compared with a common prefabricated assembly pavement, the prefabricated pavement system can better monitor pedestrians and vehicles on the road section, can provide reliable credentials for subsequent traffic planning of the road section according to the collected relevant data, and is beneficial to planning and design of traffic, construction and the like of the road section. The prefabricated plate mold can be used to produce the prefabricated plate, and the application further provides a preparation method of the prefabricated pavement system, so that the prefabricated pavement system is more convenient to use.

The invention relates to a roadway element (1) for vehicles, comprising a roadway surface area (2), wherein the roadway surface area (2) is designed to be driven on by the vehicle. The invention further relates to a maneuvering and / or driving area (11) for vehicles, comprising at least one plate element and / or a tar layer (12) for forming a roadway surface (13) for supporting vehicles and comprising at least one such roadway element (1). The space requirement of a charging system (3) is reduced and the functionality of the roadway element (1) and the shunting and / or driving area (11) is increased by having the roadway element (1) incorporate the charging system (3) for electrical storage devices, in particular for batteries of electric vehicles, wherein the roadway surface area (2) is at least partially formed by means of the charging system (3).

The invention relates to the field of road indication, and particularly discloses a light-emitting floor tile device for road indication, which is characterized by comprising a tensioning pad; the floor tile prosthesis assembly is connected with the tensioning pad; the cleaning seat assembly is connected with the interior of the floor tile prosthesis assembly; the rotation indicating assembly is connected with the interior of the floor tile prosthesis assembly; the intelligent control module is electrically connected with the interior of the floor tile prosthesis assembly; wherein the rotation indicating assembly comprises a rotation body assembly, and the rotation body assembly is rotationally connected with the interior of the floor tile prosthesis assembly; the elastic indication assembly is connected with the rotating body assembly; the elastic indication assembly can elastically contract, the driving foreign body sensation is eliminated, the service life is prolonged, the intelligent control module controls the elastic indication assembly in a linkage mode to achieve dynamic road condition response, and the visibility of the complex environment is improved through a multi-dimensional indication mode.

The invention discloses an intelligent bridge dynamic weighing and blocking integrated device which comprises a track and a moving frame, the bottoms of the two ends of the moving frame are rotationally connected with a plurality of moving wheels, the moving frame advances on the track through the moving wheels, the two ends of the moving frame are fixedly connected with speed reducers A, and the speed reducers B are fixedly connected with speed reducers C; the power input end of the speed reducer A is further fixedly connected with one moving wheel, a speed reducing motor A is arranged on the side, away from the moving frame, of the speed reducer A, and the output end of the speed reducing motor A is fixedly connected with the power input end of the speed reducer A; and the transmission screw rod is rotationally connected to the top end of the inner side of the moving frame. Through the overall structural cooperation, vehicles entering the bridge can be weighed, when the vehicles are overweight, the vehicles can be blocked, the situation that overweight vehicle teams pass through the bridge and consequently the single side of the bridge is overloaded is avoided, and the travel safety of personnel is greatly guaranteed.

The invention provides an intelligent snow-melting anti-skid system, method and equipment for an expressway and a medium, and belongs to the technical field of road traffic safety guarantee. The system comprises a road condition monitoring module which is used for obtaining road data of an expressway in real time; the meteorological data acquisition module is used for acquiring meteorological data of an area where the expressway is located in real time; the intelligent snow-melting anti-skid equipment module is arranged on a preset road section of the expressway and is used for performing snow-melting agent spraying treatment, snow removal treatment and pavement heating treatment on the expressway according to a control instruction of the data processing and control center; the data processing and control center is used for receiving the road data and the meteorological data, predicting the snowfall confidence coefficient of a related road section through a snowfall confidence coefficient model according to the meteorological data, generating an operation scheme by integrating a prediction result and the road data, generating a control instruction according to the operation scheme, and sending the control instruction to the intelligent snow melting anti-skid equipment module; and the spraying amount of the snow-melting agent, snow removal parameters and pavement heating power are dynamically adjusted.

The utility model provides a wagon balance with an anti-displacement structure, and relates to the field of wagon balances, two groups of limiting rods are fixedly connected to the front side and the rear side of the top end face of an installation plate in a longitudinal array mode, and threads are arranged on the peripheral faces of the limiting rods. The problems that an automobile is arranged on a base plate, the automobile is driven to the wagon balance to realize measurement operation, but impact force is generated in the driving process of the automobile, and when the impact force is in contact with the base plate, if the wagon balance is lack of an effective anti-displacement structure, the wagon balance is easy to displace due to the impact force, so that the measurement result is inaccurate are solved. The supporting frame fixedly connected to the bottom end face of the mounting plate is arranged, and the supporting frame is of an inclined structure, so that when the mounting plate is buried into the ground, the mounting plate can be buried into the ground through the obliquely arranged supporting frame and the bottom plate fixedly connected to the inner side of the supporting frame; therefore, the overall anti-displacement operation of the substrate mounted on the top end surface of the mounting plate is realized.

The utility model discloses an intelligent well lid device capable of preventing illegal well descending, and belongs to the field of well lids. The well lid mainly comprises a well lid assembly, a protection assembly is fixedly installed in the well lid assembly, the well lid assembly comprises a bottom plate, a drainage well can be arranged at the bottom of the bottom plate, a lower frame body is fixedly installed on the bottom plate, a top cover is hinged to the lower frame body, and a sensor is fixedly installed on the inner wall of the top cover. According to the intelligent well lid device capable of preventing illegal well descending, the sensor is arranged, so that the interior of the top cover has a warning effect, non-staff can be prevented from entering the interior of the well lid assembly, the safety of the well lid assembly is improved, meanwhile, the protection assembly is arranged, and the safety of the well lid assembly is improved. And when the top cover is opened, surrounding pedestrians and vehicles can be warned in time, so that the use safety and the use effect of the well lid assembly can be improved.

This invention relates to a sensor-based method for determining the flushing timing of permeable asphalt pavements. The method includes: preparing asphalt mixture specimens; testing the capacitance value of the specimens using a planar capacitance sensor; testing the permeability coefficient of the specimens; conducting multiple in-situ clogging tests; testing the capacitance value and permeability coefficient of the specimens after the clogging tests; correcting the permeability coefficient and calculating the degree of clogging after each set of tests; finally, fitting the relationship between the degree of clogging and the capacitance value, optimizing and establishing a fitting formula suitable for actual conditions, and then detecting actual permeable asphalt pavements. Based on the clogging degree standard, a flushing timing decision is made for the permeable asphalt pavement. This invention allows the actual pavement capacitance value obtained by a planar capacitance sensor to be converted into the corresponding degree of clogging through a fitting formula, achieving non-destructive continuous detection of the clogging state of asphalt pavements, improving pavement detection efficiency, and having significant implications for determining the flushing timing of permeable asphalt pavements.