73results 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.

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.

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 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 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 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 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.

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.

This application discloses an alarm device and alarm method for a collision avoidance vehicle. The alarm device includes a collision avoidance vehicle body, a collision avoidance buffer device, a first-level warning device, a second-level warning device, and a third-level warning device. The first-level warning device includes a radar mechanism and an audible warning mechanism. The second-level warning device includes a warning support frame, a pressure sensor, a flashing warning mechanism, and a vibration warning mechanism. The third-level warning device includes an impact sensor and a buffer folding support mechanism. In the alarm method, the radar mechanism is used to trigger the audible warning mechanism to provide an audible alert. The pressure sensor is used to trigger the flashing warning mechanism to emit a strong flashing light warning, and simultaneously triggers the vibration warning mechanism to emit a mechanical vibration alert. The impact sensor is used to trigger the buffer folding support mechanism to unfold to enhance the structural strength of the collision avoidance buffer device, forming a three-level active protection system. This achieves a dynamic response of "long-distance warning - contact warning - collision buffer," improving the timeliness and stability of the warning.

The invention relates to an intelligent blind sidewalk information prompting brick which comprises a brick body and a rear cover, a mounting cavity and a mounting groove which are communicated are formed in the lower side face of the brick body, a penetrating through hole is formed in the brick body in the vertical direction, the through hole is communicated with the mounting groove, and the rear cover hermetically covers the mounting cavity and the mounting groove; the microwave transceiving assembly comprises a matrix antenna information point, a PCB antenna and a matrix antenna feeder, the matrix antenna information point is arranged on the upper side face of the brick body and located on the upper side of the through hole, the matrix antenna feeder is located in the mounting groove, one end of the PCB antenna is electrically connected with the matrix antenna feeder, and the other end of the PCB antenna penetrates through and is electrically connected with the matrix antenna information point; the information processing assembly is fixedly arranged in the mounting cavity, and the information processing assembly is electrically connected with the matrix antenna feeder; the energy storage power supply is fixedly arranged in the mounting cavity, and the energy storage power supply is electrically connected with the microwave transceiving assembly and the information processing assembly, so that accurate positioning and efficient guiding are realized.

To provide a method for installing magnetic markers that can shorten the time the road surface needs to be closed during installation, allowing the road surface to be reopened sooner. [Solution] In the construction method for laying a sheet-shaped magnetic marker 1 on a road surface 53, the magnetic marker 1 is placed on the road surface 53 with an adhesive layer 21 made of modified silicone adhesive in between. Then, before the modified silicone adhesive forming the adhesive layer 21 hardens, a load is applied to the construction site 5A while restricting the position of the magnetic marker 1 on the road surface 53 to compact it and make the magnetic marker 1 adhere tightly to the road surface 53.

This invention discloses a modular integrated photovoltaic road component, belonging to the field of road engineering. The invention includes a photovoltaic power generation unit, a roadbed, a load-bearing heat dissipation module panel, and an electrically controlled dimming film. The load-bearing heat dissipation module panel includes a load-bearing panel, a honeycomb sandwich structure, and a sealed heat dissipation plate. The top and bottom of the honeycomb sandwich structure are respectively connected to the load-bearing panel and the sealed heat dissipation plate. The photovoltaic power generation unit is fixedly installed inside the honeycomb sandwich structure. The bottom surface of the load-bearing heat dissipation module panel is fixedly installed to the top surface of the roadbed. An electrically controlled dimming film is provided inside the load-bearing panel. A lighting component is provided between the photovoltaic power generation unit and the load-bearing panel. The sides of every two adjacent load-bearing heat dissipation module panels are modularly spliced. This invention, through the modular design of the load-bearing heat dissipation module panel, ensures product consistency and high reliability, greatly improves construction efficiency, and simplifies replacement and maintenance.

The invention belongs to the field of traffic safety, and particularly relates to a traffic safety pedestrian early warning device and a using method thereof.The traffic safety pedestrian early warning device comprises a transmitting pile, a receiving pile and a pre-buried base, the lower side of the transmitting pile and the lower side of the receiving pile are both fixedly connected to the upper side of the pre-buried base, a blocking assembly is arranged on the transmitting pile, and a warning assembly is arranged on the transmitting pile; the blocking assembly comprises a supporting table, the inner wall of the launching pile is fixedly connected with the supporting table, and the top of the supporting table is fixedly connected with an electric cylinder base. The traffic safety pedestrian early warning device can monitor pedestrians close to a zebra crossing in real time through the infrared emission array and the infrared receiving array, the controller and traffic light signals are linked, the electric cylinder seat drives the protection rod to turn over from a vertical state to a horizontal state when the red light is on, the zebra crossing is actively closed, and the pedestrians are effectively prevented from running the red light; when the green light is on, the protection rod automatically resets, normal passing is not affected, accurate control of red light blocking and green light releasing is achieved, and the traffic accident risk at the intersection is reduced.

The invention discloses a quick leveling device for pavement construction, which comprises an anti-settlement base arranged on a road base layer, a connecting seat used for connecting the anti-settlement base, an anti-pressure signal terminal used for generating a reflection signal, and a vehicle-mounted measuring mechanism used for detecting a distance, the anti-settlement base is arranged in a road subgrade, and the connecting seat is connected with the anti-settlement base. The anti-settlement base is a rectangular pyramid base body prefabricated through concrete pouring, the anti-settlement base is placed and tamped after a roadbed is compacted, the connecting base is placed in when the anti-settlement base is prefabricated, the connecting base and the anti-settlement base are of an integrated structure, the anti-pressure signal terminal is fixedly connected to the top end of the connecting base, the height of the anti-pressure signal terminal is adjusted when the anti-pressure signal terminal is installed, and the anti-settlement signal terminal is connected with the connecting base. The vehicle-mounted measuring mechanisms are arranged on a detection vehicle, and a plurality of vehicle-mounted measuring mechanisms are arranged on the detection vehicle. The road surface flatness is detected by adopting a pre-embedded signal source positioning mode. The device has the advantages of simple structure, safety, effectiveness, good use effect and the like.

To provide a smooth guide paving material and guide zone without any bulge such as protrusion, the guide paving material and guide zone capable of safely guiding pedestrians including the visually impaired.SOLUTION: A guide paving material 10 paved along a passage, where a plurality of guide paving materials are arranged side by side and used to provide pedestrians moving on the passage with information of movable directions, includes a moving part supported so as to vertically move with respect to a paving surface, the moving part moving downward only when a load is applied from above. The guide paving material is configured to move the moving part downward by a pedestrian stepping on the moving part.SELECTED DRAWING: Figure 1

The invention relates to a coastal geology intelligent patrolling footpath system based on light-kinetic energy composite power generation. The system comprises a footpath plate unit, a power generation and energy storage unit and a monitoring unit, the footpath plate unit is an integrated prefabricated groove-shaped component, a central walking area adopts a grid support sandwich structure, and photovoltaic panels are embedded in photovoltaic areas on the two sides; the kinetic energy power generation module is installed at the top of a diagonal support of a grid in a sealed mode, millimeter-level deformation of pedestrian treading is converted into electric energy through a ball head-universal ball head pair-trigger rocker arm-overrun clutch-flywheel-gear pair, and the electric energy and photovoltaic electric energy are converged into an energy storage battery embedded in the center of a bottom plate together. The monitoring unit comprises a tilt angle sensor and a strain sensor and is powered by an energy storage battery to form an energy self-sufficient closed-loop Internet of Things. All the footpath plate units are automatically networked through power line carriers, data are uploaded to a cloud platform through an edge gateway and a low-power-consumption wide area network, and real-time settlement early warning is achieved.

The utility model relates to the technical field of ground induction coil installation, and discloses a ground induction coil module and a vehicle management system, the ground induction coil module comprises an installation seat and a ground induction coil, the installation seat can be fixedly matched with an external fixture, the installation seat is provided with a wire slot, and the ground induction coil is arranged in the wire slot. When the ground induction coil module needs to be installed on an external fixing object, the ground induction coil module can be fixedly installed on the external fixing object only by fixedly installing the installation base on the external fixing object, the installation process of the ground induction coil module is simple, convenient and rapid, and the manual installation cost and the time cost are saved. Moreover, compared with the traditional mode of installing the ground induction coil by cutting a wire slot on the ground, the embodiment of the utility model does not need to arrange the wire slot on the ground, does not damage the integrity of the ground, and reduces the cost of slotting on the ground.

The application provides a village-level and community-level grading cleaning operation method, and relates to the technical field of environmental hygiene.The method comprises the following steps: embedding an array type pressure sensing unit and a humidity sensor at the entrance and exit of a village road to monitor the tire pressure of agricultural machinery and the soil humidity, and generating a characteristic signal of agricultural machinery when the tire pressure and the soil humidity exceed the standard; triggering a concealed high-pressure spraying system to directionally spray a pre-wetting agent on the driving track; dispatching a variable hardness sweeper to switch the hard bristles and increase the pressure to peel and clean; a tail torsion sensing roller brush monitors the friction resistance in real time, and triggers a secondary cleaning and marks a risk point when the friction resistance exceeds the standard; for a community, a light-sensitive time control switch is installed on a lamp post, and a miniature mobile cleaning unit is triggered to patrol and clean after the lighting is turned on for a preset time length.The application realizes accurate identification and response of periodic agricultural pollution and instantaneous community life pollution, cooperatively removes stubborn attached layers through pretreatment and mechanical peeling, establishes a cleaning effect verification closed loop, and improves the intelligent level of cleaning.

This invention relates to the field of strain monitoring devices, and discloses a pavement structure layer strain monitoring device and its manufacturing method. The pavement structure layer strain monitoring device includes a detection component (1) and a protection component (2). The detection component includes at least one sensing optical fiber (11), which is connected to a fiber optic demodulator, and a grating (111) is provided on the sensing optical fiber (11). The protection component (2) includes a protective sleeve (21) and a connecting sleeve (22). The protective sleeve (21) and the connecting sleeve (22) have cavities formed within them suitable for accommodating the sensing optical fiber (11). The elastic modulus of the protective sleeve (21) and the connecting sleeve (22) is within a preset ratio range to the elastic modulus of the structure layer to be tested, where the preset ratio range is 1 to 30. This pavement structure layer strain monitoring device has high measurement accuracy and strong anti-interference capability.

The utility model discloses a vehicle safe passing pre-detection system, which is characterized by comprising a vehicle size safety detection device, a vehicle weight detection device and a vehicle pressure intensity detection device, the vehicle size safety detection device comprises a passing door arranged in the width direction of a running road surface, the passing door comprises two vertical rods vertically arranged on the two sides and further comprises a height limiting rod horizontally arranged above the two vertical rods, and a row of laser sensors are arranged on the lower surface of the height limiting rod in the length direction; the laser sensors comprise laser emitters which are arranged downwards and used for emitting laser and corresponding laser detectors used for receiving reflected laser, the laser emitters are arranged in rows in an attached mode and are arranged at intervals with the corresponding rows of laser detectors in a front-back mode, and the laser detectors are connected with the control center. The system has the characteristics of more comprehensive detection and higher safety, and can better guarantee traffic safety, protect road facilities and optimize road management.