170 results about "Rural roads" patented technology

The present invention relates to an omnidirectional intelligentized remote networking system in automotive field, and is in particular suitable to an intelligentized management system in car maintenance. The present invention mainly comprises three subsystems that are running condition detecting system, condition decoding system and fault early warning notice system of the car, wherein, the running condition detecting comprises an OBD vehicle automatic diagnosis module and an additional inspection module, the additional inspection module uses an optical fiber to transmit the inspection result data, which is transmitted to a condition decoding module together with a data output by the OBD vehicle automatic diagnosis module; the condition decoding module unscrambles an OBD fault code and an additional detection sensing detecting data, the fault code is transmitted to the fault early warning notice system, and the control center and users are informed through mobile communication network by utilizing a GSM / GPRS module chip. Compared with the prior art, the present invention has the functions of remote self-check diagnosis and fault early warning for vehicle fault, thus realizing that the fault detection and the fault resolution are real time, accurate and effective, and offering the potent assurance to the daily maintenance work of vehicles, the personnel safety of the owners of the vehicles, and the unimpeded transport of urban and rural road.

The present invention discloses a road boundary detection method based on a three-dimensional laser radar. In the process of intelligent vehicle driving, point cloud data collected by a vehicle-mounted three-dimensional laser radar is subjected to rasterizing processing to generate a binary raster graphic. The binary raster graphic is subjected to a distance conversion operation to obtain a distance grey-scale map, a filing distance is smaller than the narrow space between obstacle points of certain thresholds, the overall contour of the obstacle points is not changed, and an obstacle area contour map is obtained. A region growing method is used, with the position of an intelligent vehicle as a start point, the region growing is carried out forward, the passable area contour map of a road is obtained, and combined with the original binary raster graphic, a road area contour map is obtained. The contours of two sides of the road area contour map are extracted, the second function fitting is carried out, and a road boundary is obtained. The method is applicable to an urban road, a rural road and other roads, the influence of obstacles on a detection effect is small, the time complexity is low, the real-time processing is achieved, day and night work is achieved, and the algorithm robustness is good.

The invention discloses a road section pedestrian street-crossing sensing control method based on the number of pedestrians to cross a street. The method comprises the following steps of: (1) acquiring control threshold information; (2) acquiring a video image in real time and extracting the information about the number of the pedestrians to cross the street; and (3) judging, and controlling switching of signal lights. By adoption of the road section pedestrian street-crossing sensing control method, the actual traffic condition in urban and rural road environments is fully considered, the pedestrians to cross the street serve as top-priority objects, the information about the number of the pedestrians to cross a sidewalk is acquired by computer vision detection, and the signal lights areswitched according to the information, so that the pedestrians can safely cross the street, time and space resources of road traffic are reasonably excavated, and the traffic operating efficiency in the urban and rural road environments is effectively improved. Compared with the prior art for vehicle identification and pedestrian identification, the method has the advantages of high detection identification accuracy rate and high control reliability.

The invention relates to a convolutional neural network road scene classification and road segmentation method. A dual-task joint structure model based on the convolutional neural network is established.and composed of an encoder and two decoders. Feature information sharing is achieved through end-to-end training.Classification of various road scenes such as urban roads, rural roads and highwaysis completed, road drivable areas in the scenes are segmented, and the dual goals of road scene classification and road area segmentation are achieved. Based on a convolutional neural network, scene classification and road extraction in road scene perception are combined. Real-time output is obtained through an end-to-end training mode, the functions of an intelligent driving assistance system areimproved, and an effective and reliable driving assistance function is provided. A mode of combining a full convolutional network and a conditional random field is adopted for a part extracted from adrivable area in the model, a high-resolution image optimization output result can be generated, and a relatively accurate segmentation effect is achieved.

The invention discloses a piezoelectric self-generated energy acquisition and illumination device for an asphalt concrete pavement. A piezoelectric self-generating unit is laid below the asphalt concrete pavement, electric energy is generated by using the vibration energy or the squeezing energy of vehicles, the electric energy is supplied to an energy storage device for storage and utilization, and finally the electricity energy is supplied to a road illumination device through a power supply management system and is used as working energy. The device comprises the piezoelectric self-generating unit (1), an energy acquisition device (2), a DC-DC conversion device (3), the energy storage device (4), a power supply monitoring and management system (5) and the road illumination device (6), wherein the unit, the devices and the system are sequentially connected through conducting wires. The energy storage device is monitored by the power monitoring and management system in real time. Regulation is conducted according to the monitored working state of the energy storage device, so proper voltage and current are supplied to the road illumination device. The invention effectively solves the difficulty that the power supply to urban and rural road lamps is inconvenient, and has the advantages of energy saving and environmental protection.

The invention belongs to the field of snow melting and deicing and particularly relates to an efficient-corrosion-inhibition compound chloride salt type snow-melting agent and a preparation method thereof. The efficient-corrosion-inhibition compound chloride salt type snow-melting agent comprises sodium chloride, calcium chloride dihydrate, a corrosion inhibitor and auxiliaries, wherein the corrosion inhibitor comprises sodium hexametaphosphate, sodium molybdate, sodium benzoate, sodium gluconate, zinc dihydrogen phosphate, sodium tartrate, sodium tripolyphosphate, sodium silicate, sodium lignin sulfonate, sodium citrate, benzotrizaole and thiourea; the auxiliaries comprise sodium carboxymethyl cellulose, urea and povidone. The efficient-corrosion-inhibition compound chloride salt type snow-melting agent which is granular solid has the advantages that the snow-melting agent is suitable for large-scale mechanical throwing operation and excellent in corrosion inhibition effect, and the deicing and snow melting ability of the snow-melting agent can be brought into full play in aspects such as city and rural roads, highways, rail transit, airports, squares, courtyards and bridges.

The invention provides a reinforcing construction method in partial failure repairing of a rural cement pavement. The reinforcing construction method comprises the following steps: excavating an old concrete pavement needing to be repaired to the top surface of a roadbed and cleaning; cutting the excavated old concrete pavement and thus cutting the pavement into an inclined plane along the thickness direction of the road surface; respectively paving one layer of steel wire net on each of the bottom and the middle pat of the inclined section; paving thread steel bars and extending to a road surface region needing to be newly poured; pouring concrete into an excavated region of the old road surface to form a new concrete road surface. The invention aims to solve the road surface crushing problem in old cement road surface diseases of rural highways and useful resources including steel wires, steel bars and the like which are usual in villages can be effectively utilized; the engineering cost is saved and a repairing technology is simple, so as to provide a simple, economical and effective method for repairing the road surfaces of rural roads.

The invention discloses a device for quickly surveying road conditions of rural roads, comprising an acquisition monitoring computer, a network memory and a data acquisition center which are mutually connected by an exchanger, and also comprising a battery assembly, a photoelectric encoder, a satellite positioning device and a flash lamp module, wherein the data acquisition center is of an integrated structure and is used for acquiring the road landscape picture information and pavement flatness information of rural roads. The invention also discloses a vehicle for quickly surveying road conditions of rural roads, provided with the device. The device is small in overall volume, light in load, low in manufacturing cost, and capable of adapting to complicated road conditions of rural roads.

The invention discloses a sprinkling device for newly built roads, which comprises a box body, a fixed base is fixedly connected to the left side of the bottom of the inner wall of the box, a motor is fixedly connected to the top of the fixed base, a worm is fixedly connected to one side of the output shaft of the motor, and the fixed base The side away from the motor is fixedly connected with a shaft seat, the center line of the shaft seat is connected with a transmission shaft in rotation, the middle part of the transmission shaft is fixedly connected with a worm wheel between the two shaft seats, the worm and the worm wheel are meshed and connected, and the transmission shaft is rotatably connected with a transmission shaft. The device and the transmission device are rotatably connected with a rotating device, a water tank is fixed in the box, and the water tank is connected with a high-pressure pipe through a high-pressure pump, and the high-pressure pipe extends to the outside of the box body and is fixedly connected with a high-pressure nozzle. The invention relates to the field of rural road construction. The sprinkling device for newly-built roads uses a motor to drive a drive wheel to rotate and a high-pressure sprinkler to reciprocate, which solves the problem of traditional manual sprinkling, improves sprinkling efficiency, and reduces labor intensity.

The invention discloses a special tool for arrangement and installation of a cable for power supply in an urban or rural road. The special tool comprises a cable winding wheel, a base, a lifting part and a cable supporting part, and also comprises an adjustment part, wherein the cable winding wheel is used for realizing wire winding for the cable supporting part; the lifting part is used for jacking the cable supporting part through a hydraulic cylinder and auxiliaries for realizing height adjustment; the cable supporting part is fixed on the top of the lifting part with adjustable length and used for supporting the cable; the adjustment part can be used for adjusting the installation angle of the cable; and a lifting arm is divided into an upper part and a lower part which are connected through a diversion connector, so that the adjustment of the cable in the horizontal plane within any one angle can be realized. By adoption of the special tool, automatic wire releasing can be realized; the cable is not required to be placed on the ground to be manually dragged, thereby greatly lowering labor intensity in installation, shortening the installation period, and avoiding damage to the cable in an installation process.

The invention discloses a construction technology of a tourism ecological road and a rural highway through soil body solidification. The construction technology comprises the following steps of firstly performing surface cleaning on a roadbed; performing pile driving and paying-off; then performing on-the-spot soil body scarifying through a machine for soil; paving scarified soil on the road bed; performing mixing a soil solidifying agent and cement with soil bodies so as to obtain solidified soil; and performing integral rolling and shaping, performing curing, so as to obtain the tourism ecological road and the rural highway. Through the adoption of the construction technology disclosed by the invention, the tourism ecological road and the rural highway have the advantages of being low in engineering cost, short in construction period, long in service life, high in carrying capacity, good in water stability, good in durability, high in frost resistance and the like; the problems of being high in cost, high in energy consumption, high in later-stage maintenance cost and the like in a conventional method are solved; and a large quantity of soil bodies are used, the road is constructed through obtaining soil in an on-the-spot manner, and sand and gravel materials are reduced or not used, so that resources are saved, the environment is protected, and after the constructed road is crushed, the soil bodies of the crushed road can be directly returned to a farmland.

The invention provides a town road layout method for the road field, and utilizes the method to improve part establishment of the road, characterized in that, the rain is deposited in the rain underground tube arranged on the sideway or between the roadside trees, while the rain grate is changed on the kerbstone wall, and the kerbstone is provided with a channel wall. Under the road stratum is presupposed with a underground line skid bar, and the rain sedimentation basin is laid using the double face water seepage brick. The roadbed lay of the roadway is in a concave shape to enhance the durability and the security of the roadway, enlarge the effective through capacity, and use the rain water to irrigate the crop and the flower, which has the marked advantages of small invest, high efficiency etc, and is applicable in the generalization for the urban-rural road.

The invention belongs to the field of road engineering and relates to a high-identification-property bituminous pavement material and a method for paving the materia, which are suitable for highways of a second grade and below, rural roads, urban secondary roads and urban roads below the urban secondary roads, block roads, community roads, roads of tunnels, overpasses and the like, as well as road sections in which illumination is not available or illumination brightness is insufficient and a certain potential safety hazards of traffic exist. The high-identification-property bituminous pavement material is mainly characterized in that glass aggregates are doped in a bituminous mixture, the brightness of pavement can be increased by utilizing the reflecting performance of the glass aggregates, and thus, the identification property of the pavement at night can be enhanced to a certain extent. The technological method provided by the invention is simple in process and free of additional equipment requirements, waste glass raw materials can be fully utilized, the identification property of the pavement at night is greatly enhanced under the condition of not obviously increasing the construction cost, and thus, the traffic safety of the road is guaranteed in a better way.

The invention relates to a small and medium-sized concrete mixing and conveying integrated belt conveyor suitable for villages and towns. The small and medium-sized concrete mixing belt conveyor comprises a walking rectangular base plate. A folding feeding mechanism, an extending-and-contracting conveying mechanism and a mixing machine are arranged above the base plate. The feeding end of the feeding mechanism communicates with the discharging end of the mixing machine. The discharging end of the feeding mechanism communicates with the feeding end of the conveying mechanism. A discharging hopper is arranged at the discharging end of the conveying mechanism. Concrete mixed through the mixing machine sequentially passes the feeding mechanism, the conveying mechanism and the discharging hopper and is poured to the designated position. The small and medium-sized concrete mixing and conveying integrated belt conveyor for the villages and towns has the concrete mixing and conveying functions at the same time, the requirement on the size of particles of the concrete is not high, the whole equipment is small in size, the rural road section traveling is facilitated, meanwhile the labor intensity can be lowered as well, and the small and medium-sized concrete mixing and conveying integrated belt conveyor can serve the rural market in a faster, better and more environmental-friendly way.

The invention relates to an environment-friendly curing agent for stabilizing soil, which can improve the bearing capacity of a subgrade. The curing agent for stabilizing the soil is characterized by comprising the following components in parts by weight: 2-18 parts of polyanionic cellulose, 2-6 parts of sodium sulfate or calcium sulphate, 12-50 parts of sulfonic acid, 2-53 parts of granulated blast furnace slag, 1-5 parts of neutral water glass and 38-150 parts of water. The curing agent for stabilizing the soil can remarkably improve the bearing capability of the cured soil and has good antiseepage effect and durability, and the situation of argillization can be reduced after the curing agent is soaked in the water; therefore, the environment-friendly curing agent is suitable for various construction pavements, in particular rural roads developed for travel and agriculture with the requirements of low cost, short construction period and fast effect. The environment-friendly curing agent not only improves the road construction quality, but also makes the material application and the construction process more environment-friendly, can be further applied to the base course and surface course of road and construction engineering and the fields of wind prevention and sand consolidation, canal seepage control, burning-free low-carbon environment-friendly bricks and the like, and is suitable for the semimechanical operation and the large-scale mechanical construction operation in country.

The invention discloses a road and bridge protector and a road and bridge protection system, relating to a traffic road and bridge protection facility. The road and bridge protector comprises a dynamic weighing detector, a wheel retaining plate and a return plate, wherein the dynamic weighing detector comprises a bearing plate, a pedestal, weight sensing springs and stand columns; the wheel retaining plate and the return plate are arranged at the front end and the rear end of the bearing plate respectively; the stand columns are provided with driving devices to drive the upper ends of the stand columns to lift and drop so as to lift and drop the bearing plate; and one end of the return plate close to the bearing plate is pivotally connected with the bearing plate, can tilt downwards by taking the end away from the bearing plate as an axis and can tilt back upwards at a certain angle. The road and bridge protection system comprises the road and bridge protector and a forced speed-down device. The road and bridge protector has the advantages of compact and skillful structure, need of a small number of power driving devices, small power of the power driving devices, reduced manufacturing cost, less roadbed occupation, easiness and convenience in mounting, low mounting cost, automation, good effect, unattended operation and capability of being universally applicable to national highways, provincial highways and rural roads.

The invention relates to a cultivation method of golden leaf poplar trees. In the method, a populus tree species in salicaceae is taken as a rootstock, and the populus tree species in the salicaceae is taken as a scion for grafting. The method comprises the following steps: (1) selecting a scion branch with 2-4 full buds, cutting the lower end of the scion into a wooden wedge shape; (2) cutting off the rootstock at a position where the straight rootstock bark has no knot, and splitting a vertical split mouth with the depth slightly longer than the scion in the middle of a cutting plane; (3) inserting the lower end of the scion into a cut of the rootstock, binding and properly sealing an interface with plastics; (4) removing rootstock shoots in time; and (5) removing the binding plastics after the scion survives, thus completing the cultivation of color leaf poplar trees. The method is characterized by a few steps and easy operation, and the cultivated golden leaf poplar trees have the advantages of salt and alkali resistance and ornamental value, are good materials for urban and rural road forest networks (especially for urban greening), are applicable to being planted in saline-alkali tideland and infertile soil areas, and are a tree species which enriches and expands urban greening gardens and has ornamental value.

The invention discloses a multifunctional colored self-luminous road pavement structure and a preparation method thereof. The multifunctional colored self-luminous road pavement structure comprises a macropore pavement structure and self-luminous resin slurry poured in pores of the macropore pavement structure. The invention provides the multifunctional colored self-luminous road pavement structure which mainly comprises the macropore pavement structure and the self-luminous resin slurry poured in the pores of the macropore pavement structure; the pavement structure is colored at daytime; the self-luminous resin slurry absorbs light at daytime and is self luminous for a long time at nighttime, so that the recognizability of the road at night is improved, and the traffic safety is improved; macropores of the pavement structure achieve the effect of colorizing the pavement; in addition, pores on the surface layer of the pavement structure provide a platform of pouring luminous materials; meanwhile, the pavement structure has certain draining and water permeable capabilities; the multifunctional colored self-luminous road pavement structure can be widely applied to landscape loadsroads, non-motorized lanes and sidewalks in urban roads as well as expressways, rural roads, tunnels and the like without illuminating lamps.

The invention discloses an immediate construction method of a rural road. The immediate construction method comprises the following basic procedures: prefabricating interlocking blocks in the factory, shaping the road bed, constructing the road base, constructing the sand bed, paving road kerb, paving closing pieces, scattering a calking material and stabilizing pressure. According to the immediate construction method, the constructing form of pouring concrete on site and then maintaining is changing into the constructing form of integrally prefabricating interlocking blocks in the factory and then paving on site in one time. Because the interlocking blocks are prefabricated, the construction period can be shortened greatly under the premise of guaranteeing the construction quality. The immediate construction method disclosed by the invention is particularly suitable for the rural road needing immediate construction.

The invention discloses a municipal road and a construction method thereof, and belongs to the technical field of road construction, which aims at providing a municipal road construction method capable of reducing the temperature difference between concrete interior and surface layer after casting. The construction method adopts the technical scheme with the following steps of positioning and lofting, excavation of subgrade grooves, primary rolling, setting of a formwork, building of a sunshade shed, paving of a bedding layer, paving of a base layer, paving of a cotton layer, removal of the formwork, joint cutting, curing, and joint filling. The construction road has the advantages that the higher-quality road can be obtained, the service life is longer, and the construction method is suitable for constructing urban and rural roads.

The invention discloses a preparation method of anorthite-quartz-glass phase composite ceramic. The composite ceramic is prepared from desert sand, fly ash, kaolin and cellulose. The anorthite-quartz-glass phase composite ceramic material prepared by the preparation method disclosed by the invention has the advantages that the preparation process is simple; the apparent porosity is 0.5-7%, the bending strength is 70-130 MPa, the coefficient of thermal expansion is (3.0-7.4)*10<-6> / DEG C, and the material can be used for manufacturing conveying pipelines, stock bin linings, heat insulation plates, kiln materials and the like in the industries of machinery, chemical engineering, metallurgy, environmental protection and the like, and can also be used for urban and rural road paving, buildingdecoration and the like.

The invention discloses stirring, pumping and walking integrated machine. The integrated machine comprises a boom pump truck, and is characterized in that the front end of a pumping hopper of the boom pump truck is provided with a flat-opening stirring machine, a material pouring nozzle is formed in the flat-opening stirring machine, and the material pouring nozzle feeds materials in the pumping hopper. The stirring, pumping and walking integrated machine is simple in structure, small in occupied area, low in modification cost, and suitable for being used on rural roads with a small construction area.

The invention relates to the technical field of road planning, and discloses a surveying and mapping device for urban and rural road planning, which comprises a distance measuring wheel, a mounting frame positioned on the outer side of the distance measuring wheel, a rotating shaft positioned in the distance measuring wheel and a counter positioned on one side of the distance measuring wheel, the second gear is arranged on one side of the first gear at one end of the rotating shaft, the rotating disc is fixedly connected to the center shaft of the second gear, and the groove in the rotating disc communicates with the spiral pipe and the connecting pipe in the moving process, so that in the walking process of the distance measuring wheel, the weighing balls can be conveyed at the same time, and the situation that a counter is damaged and cannot count is avoided; the counting marks are arranged on the outer side of the distance measuring wheel, the arrowhead rotating rod corresponding to the counting marks is rotationally connected to the connecting shaft on one side of the counter, the dial is fixedly arranged on the outer side of the connecting shaft in a sleeving mode, and if the last measured circle is not an integer circle, accurate measurement can be conducted.

The invention discloses a piezoelectric self-generating unit for generating electric charge by utilizing direct piezoelectric effect. Piezoelectric ceramics of which the matrix is PMnS-PZN-PZT system are prepared by the traditional solid-phase method, and bismuth ferrite is doped on the basis; and according to the required quantity of electric charge, piezoelectric ceramic materials with different shapes, sizes and quantities are selected to connect a metal conductive material, and then packaged to form the piezoelectric self-generating unit or the piezoelectric self-generating unit is further combined, is buried in a bituminous concrete pavement structure layer, and is matched with an energy acquisition device, a DC-DC converter, an energy storage device, a power supply monitoring and management system, an illuminating device so as to output the large quantity of electric charge generated by the piezoelectric self-generating unit under the action of mechanical force and supply the electric charge to illumination of high standard highways, tunnels and bridge deck pavement, railways or airport runways, and urban roads and side pavements. The piezoelectric self-generating unit not only can effectively solve the problem that power supply for lamps in urban and rural roads, tunnels and the like is inconvenient, but also is energy-saving, environment-friendly, and safe without high-voltage electric shock danger, and has obvious economic and social value.

The present invention discloses an integrated sponge city ecological planning management device, and mainly relates to the urban and rural planning construction device field. The integrated sponge city ecological planning management device comprises a regional control room, a green belt irrigation underground conveying pipeline, an air purification underground conveying pipeline, a backflow underground pipeline and a green belt purification irrigation assembly. A water suction pump is arranged in the regional control room, and a water drawing pipe and a water outlet main pipe are arranged at the two ends of the water suction pump respectively. The water outlet main pipe is connected with the green belt irrigation underground conveying pipeline and the air purification underground conveying pipeline separately, the green belt purification irrigation assembly comprises an irrigation guardrail and a purification watering device, and the purification watering device comprises a folded sprinkler and a catch basin. The beneficial effects of the present invention are that: the device can irrigate the green belts in the cells and the green belts at the two sides of the urban and rural roads timely, regularly and thoroughly, enables the air humidity to be increased, the air to be purified, the air quality to be improved and the social contradictions to be relieved, and promotes the urbanization construction of our country.

The invention discloses a pavement hardening system for a rural road. The pavement hardening system comprises multiple precast roadbed connecting bodies, wherein multiple precast pavement structure bodies are arranged above the precast roadbed connecting bodies, and side projections of the precast pavement structure bodies are inserted into side grooves of the precast pavement structure bodies adjacent to the precast pavement structure bodies; lower projections are arranged on the lower side surfaces of the precast pavement structure bodies, the adjacent precast roadbed connecting bodies are laid along a road direction to form an integral connecting body with a toothed cross section, a lower protruding embedding groove is formed in one side surface, facing towards the precast pavement structure bodies, of the integral connecting body, and the lower projections are inserted into the lower protruding embedding groove. Each precast pavement structure body comprises a first split block and a second split block, wherein a split connecting groove is formed in a hypotenuse of each first split block, a split connecting projection is arranged on a hypotenuse of each second split block, and each split connecting projection is inserted into the corresponding split connecting groove. The pavement hardening system is simple in structure, low in cost, and simple and quick to operate, and the rural road can be quickly and conveniently erected by the pavement hardening system.

The invention discloses a rural road flow monitoring intelligent management system based on the Internet-of-Things technology, and the system comprises: a flow monitoring module which is used for carrying out the snapshot collection of the pedestrian flow and traffic flow information on a rural road; an analysis processing module which is used for processing the information collected by the flow monitoring module; a counting module which is used for counting the data processed by the analysis processing module; a storage module which is used for storing the data recorded by the counting module, wherein the flow monitoring module comprises a monitoring device. According to the monitoring device, the probe of the monitoring device can be conveniently lowered, so that a worker can conveniently overhaul the probe, inconvenience and danger caused by climbing to a high place by means of a tool are avoided, dust attached to the surface of the probe can be swept away according to needs, the quality of a monitored picture is guaranteed, the probe can be conveniently disassembled and assembled, and therefore, great convenience is provided for maintenance personnel.

The invention belongs to the field of visual evaluation of rural road landscape, and discloses a visual evaluation and analysis method of rural road landscape. The road landscape visual quality was evaluated by SD method. According to the evaluation results, the samples were sorted and screened. According to the results of landscape quality ranking, the landscape samples with typical characteristics at different quality levels were selected, and then the landscape characteristics were evaluated by SD method. Through correlation analysis and regression analysis model, the impact of landscape characteristics on landscape quality is analyzed, and the landscape quality evaluation model is established. The invention adopts the SD method based on visual perception, selects 18 samples representing the vertical landscape and the horizontal landscape of the road in the village area, evaluates the visual quality of the samples, and establishes a landscape quality evaluation model through correlation analysis and linear regression analysis on the data. The invention is conducive to improving the quality of the road landscape, and provides a reference for subsequent development and construction.

The invention discloses a rural road deceleration width-limiting road pier. The road pier comprises a trapezoidal plate, a width detection device is arranged in the trapezoidal plate, the width detection device comprises two right lifting grooves which are symmetrical front and back and are provided with upward openings, and measuring plates which extend upwards to the upper side of the trapezoidal plate are slidably connected into the right lifting grooves. The device is clamped to a certain position so that the width of a vehicle is limited, and meanwhile, a driver is reminded to decelerate.Different from an existing fixed road pier, the two road piers are provided with traffic control sliding blocks, when the width of the vehicle does not meet the requirement, the two traffic control sliding blocks move in the direction close to each other to forbid the vehicle from passing through, and when the width of the vehicle meets the requirement, the two traffic control sliding blocks movein the direction away from each other; and a situation that the driver cannot pass through due to a poor driving skill or the vehicle body slightly inclines to cause damage of the vehicle body when the vehicle passes through the device is avoided.

The invention discloses a rural road boundary line automatic extraction method based on aerial photography images. The method comprises the following steps: S1, obtaining aerial photography images of a to-be-studied area; s2, inputting a seed point, and obtaining an experimental sub-region; s3, performing segmentation and post-segmentation processing on the image of the experimental sub-region; s4, carrying out tracking point extraction and road direction determination, and selecting at least two tracking directions for tracking; and S5, determining a candidate road section in a road section expansion mode by taking the current tracking point as a reference, calculating an included angle between two end points of a candidate road section skeleton, judging whether the boundary of the experimental sub-region is extracted or not according to the included angle and the change information of the road direction of the current road section, if not, returning to the step S4 to further obtain the tracking point and the tracking direction till the extraction is completed; if the extraction is completed and the boundary of the experimental sub-region is reached, returning to the step S2, and obtaining the experimental sub-region again, otherwise, completing the extraction of the road; and S6, obtaining a road boundary line.