1573results about How to "Save land resources" patented technology

A multilane free-flow electronic toll collection method based on accurate position match is characterized in that electronic tag positioning and vehicle position detected results are matched to achieve multilane free-flow electronic toll collection. The method comprises the following steps: 1, obtaining vehicle-mounted electronic tag positions, vehicle positions and vehicle images to perform electronic on-stream toll collection; 2, accurately matching the vehicle-mounted electronic tag positions and the vehicle positions to distinguish legal vehicles and illegal vehicles; and 3, performing background data processing, storing images, license numbers and illegal passing records of the illegal vehicles to be used as the basis of toll collection. By accurately matching the vehicle detected results and electronic tag positioning results, the judgment of the legal vehicles and the illegal vehicles is achieved, and accordingly the multilane free-flow electronic toll collection is achieved.

A gelatining material similar to cream for filling underground working surface is preapred from the Ca-contained non-crystal and microcrystal material, alkali and / or sulfur contained exciting material, active material, aggregate and regulator. A filling slurry is prepared from said gelatining material, filling aggregate, fine particles, regulator and water through heating to at least 18 deg.C and proportional mixing.

The invention discloses a formula of a ceramic aggregate aerated concrete brick and a method for making the concrete brick. The compositions in portion by weight of the concrete brick are: 12 to 26 portions of cement, 26 to 46 portions of fly ash, 16 to 28 portions of ceramic aggregate, 2 to 6 portions of slag, 2 to 6 portions of cinder, 16 to 26 portions of water and 2 portions of addition agent, wherein the concrete matters in percentage by weight of the addition agent are: 10 to 18 percent of aluminum powder (a foaming agent), 20 to 45 percent of polycarboxylate (a water reducing agent), 15 to 35 percent of 1122 fly ash excitant and 20 to 50 percent of coagulant hardening accelerator in which calcium chloride and sodium sulfate compounds respectively occupies 50 percent. The concrete steps for making the ceramic aggregate aerated concrete brick are as follows: raw materials are weighed; the weighed raw materials are placed in a stirring machine to carry out stirring and mixing in advance; an addition agent is added in the stirring machine to carry out full stirring; a brick die is prepared, and stirred raw materials are cast in the brick die; initial set and forming are carried out; stripping is carried out; a water-proofing agent is sprinkled on a stripped brick; and natural curing is carried out. Moreover, the obtained brick has light dead weight, low density, high strength, low water absorption rate and excellent sound insulation performance and heat-shielding performance.

The invention discloses a system and method for reserving a parking stall in a stereo parking lot and parking a car. The system comprises a client, a remote central server, a parking stall management center, and a payment platform. The client is used for querying parking lot and parking stall information near a target area, and is bound with a cell phone number and a bank card number in order to reserve a parking stall or cancel a reserved parking stall. After a reservation is made, the remote central server sends reservation information to a matched parking stall management center. The host of the parking stall management center sends a short-message verification code to a bound cell phone by means of a short message sending module in the host and a timing module of the host begins to count time. After a car owner parks the car, the host of the parking stall management center sends fee information to the payment platform via the remote central server; the payment platform deducts the expense and sends payment success information; and finally the car owner gets back the car. The system and the method enable the car owner to locate a required parking stall and improve work efficiency.

The invention proposes a long-time prediction method for the number idle parking stalls in a parking lot. The method comprises: preprocessing the acquired car parking data and corresponding weather data to obtain the number characteristics data of idle parking stalls; normalizing the idle parking stall characteristics data; cutting the characteristics data into a training set and a testing set; constructing an LSTM neural network; determining the idle parking stall characteristics data at a previous time of a to-be-predicted first time period used as the input neural elements of the LSTM neural network to obtain the number of idle parking stalls of the first time period; creating a long-time prediction model for the number of the idle parking stalls; performing repeated iterative predictions and reverse normalization to obtain the prediction result. According to the invention, based on the parking behavior characteristics of users, a long-time prediction method based on LSTM neural network for the number of idle parking stalls in a parking lot is proposed to support the number information of idle parking stalls in a future designed period and present it to users so that the users could select a best parking lot. These functions make the method of significant market value.

The invention relates to the technical field of sewage treatment, in particular to a sewage treatment tridimensional artificial wetland system that is used for the industrial waste water treatment of small-scale isolated pollution sources. The invention aims at providing a tridimensional artificial wetland system that is used for sewage treatment and that has small floor occupancy, high hydraulic load, high pollution load and long service life so as to overcome the defects of the current sewage treatment of big artificial wetland floor occupancy, low hydraulic load, low pollution load and short system service life. The key points of the invention are that: the artificial wetland for sewage treatment adopts a tridimensional assembled structure of vertical current artificial wetland and horizontal subsurface flow artificial wetland, and base materials are filled in various directions to form the tridimensional artificial wetland system for sewage treatment; the tridimensional artificial wetland system for sewage treatment comprises a water collecting header, a porous water-filtering vertical current artificial wetland bed, a first-stage regulating tank, a water drop chute, a grid tank, a second-stage regulating tank, a horizontal subsurface flow artificial wetland bed and a water collecting tank.

The invention discloses a construction waste comprehensive treatment method which comprises the following steps: primary crushing, sorting, primary magnetic separation, secondary crushing, secondary magnetic separation, primary screening, tertiary crushing and tertiary screening. The construction waste comprehensive treatment method can be used for thoroughly sorting foreign matters in the construction waste, thereby enhancing the quality of the regenerative aggregate. The invention has the advantages of reasonable procedure arrangement, low labor consumption and high efficiency, and is simple to operate. When being used for treating construction waste, the method has the social benefits of saving land resources and reducing environmental pollution.

The invention discloses a slope protection pile pouring and cable bolting construction method for a deep foundation pit. The method comprises the following steps of: 1, making preparations before construction; 2, pouring a slope protection pile, namely measuring, paying off, molding and constructing the poured slope protection pile, punching holes on the poured slope protection pile, binding and hoisting a steel reinforcement cage for molding the slope protection pile, pouring concrete into the poured slope protection pile and constructing a crown beam at the top end of the pile; and 3, excavating a foundation in a layered form and constructing anchor ropes on different rows, namely excavating a first-layer foundation, arranging a first row of anchor ropes, arranging a steel waist rail, arranging anchor heads of the anchor ropes, tensioning the anchor ropes and finishing excavating processes of different layers of foundations and arranging different rows of anchor ropes. The method has a reasonable design, simple construction steps, low investment cost, large support depth and good using effect, and solves the problems of complicated construction steps, high construction cost, inconvenience in control, easy damage to surrounding pipelines, roads, buildings and the like, large construction space and the like existing in the conventional double-row pile supporting method can be solved.

The invention discloses a multi-functional toll collection lane controlling and managing system of toll roads. An industrial personal computer, a car controlled machine, an IC (integrated circuit) card reader, a toll special keyboard and a display screen at an entrance lane direction are arranged in a toll booth; an entrance lane IC card automatic card sender and an entrance lane full-automatic toll data wireless emitter / receiver are arranged at the right side of the toll booth; the industrial personal computer, the car controlled machine, the IC card reader, the toll special keyboard and the display screen at an exit lane direction are arranged in the toll booth; and an exit lane full-automatic toll data wireless emitter / receiver is arranged at the left side of the toll booth. The system of the invention can organically combine three functions of manual toll lane, ETC (electronic toll collection) lane and automatic card sending and reading lane, so that various of vehicles can pass through the entrance and exit lanes of the toll station in a short time; and the system can disperse the vehicles on the square to a maximum extent without building new lanes. The system is safe and quick. In addition, the system can accelerate vehicle traffic capacity and reduce labor intensity of the toll staff.

The invention discloses a multilayer circular automatic garage and warehouse access combination device with aligned movable parking plates. The multilayer circular automatic garage and warehouse access combination device comprises a combination device body with an integral frame structure and a combination device body with electromechanical equipment, various types of single assembly parts in multilayer circular garages or warehouses are assembled to form the combination device body with the integral frame structure, materials are discharged in a sectioned cut-to-length manner and are processed to form the single assembly parts, and the electromechanical equipment optimally drives the movable parking plates and automatic access parking platforms to run for accessing automobiles or the warehouses. The multilayer circular automatic garage and warehouse access combination device has the advantages that a design and construction concept of the mechanical automatic automobile or warehouse access combination device which is high in efficiency and low in energy consumption and can be manufactured and installed in a standard manner is created to the greatest extent, automatic garage and warehouse access steel assembly parts and movable facility combination device bodies are creatively stacked and combined with one another to form multilayer stereoscopic space of the multilayer high-rise garages and the warehouses, the multilayer high-rise garages and the warehouses are assembled in a sandwich layer of a reinforced concrete frame structure and are positioned from an underground layer to the ground, accordingly, the novel stereoscopic mechanical automatic garage and warehouse combination device is high in parking space quantity and low in occupied land, land resources are sufficiently saved, and the automobiles or containers can be safely, quickly and automatically accessed via the novel stereoscopic mechanical automatic garage and warehouse combination device.

The invention relates to a method for detoxicating chromium residues and the comprehensive utilization of the detoxicated chromium residues. The method for detoxicating the chromium residues comprises the following steps of: performing wet ball milling on chromium-containing waste residues to obtain chromium residue powder; adding water into the chromium residue powder to prepare chromium residue slurry; adding acid into the chromium residue slurry to prepare chromium residue slurry solution, and fully stirring the chromium residue slurry solution simultaneously to make the chromium residue slurry immersed in the acid; adding a reducing agent into the immersed chromium residue slurry solution until hexavalent chromium does not exist in the immersed chromium residue slurry solution; curing the chromium residue slurry solution without the hexavalent chromium, and performing solid-liquid separation; and drying and grinding filter residues to obtain the detoxicated chromium residues without the hexavalent chromium. By the method for detoxicating the chromium residues, various hexavalent chromium compounds contained in the chromium residues can be systematically and completely detoxicated and removed, the hexavalent chromium in various produced building material products is comprehensively utilized, and the content of extract is less than 0.1mg / L.

An integrated approach to construction waste, first the construction waste including demolished the buildings, housing renovation and improvement of road will be sent to the garbage handling sites by the car, and then the construction waste that could be directly in the use of renewable materials, such as metal, wood and plastic materials use artificial methods for separating classified, then supplying company directly for the corresponding treatment. The bulk of concrete waste, scrap brick, marble and other materials, using the large broken hammer or crusher broken to the size that mill can crush, typically less than 100 mm, and then using stone crusher breaking these stones and sand until the construction standard, then grading said mixture into big stones, small stones, coarse sand and fine sand, argillo-arenaceous ground and other breeder material using multi-layered grading sieve. The production water uses activated carbon hyperfiltration cleaning domestic sewage which can be used cyclically, it can save water and can prevent the reemission of sewage water polluting environment.

The invention discloses a construction method for supporting a deep foundation pit through grouting after pile arrangement and anchor cable mounting. The construction method comprises the steps that firstly, pile arrangement supporting structure construction is performed, wherein a pile arrangement supporting structure comprises multiple slope protection piles which are arranged along the peripheral edge line of the constructed foundation pit from front to rear and a crown beam connected to the upper portions of the slope protection piles; secondly, foundation pit excavation is performed, wherein the constructed foundation pit is excavated from top to bottom; and thirdly, anchor cable supporting structure and waist beam construction is performed, wherein during excavation of the constructed foundation pit, the constructed foundation pit is excavated to the anchoring position of an anchor cable supporting structure, and the anchor cable supporting structure is constructed; and the anchor cable supporting structure comprises multiple prestress anchor cables, each prestress anchor cable comprises an anchor cable body, a primary grouting pipe and a secondary grouting pipe, and each anchor cable body comprises multiple steel strands. The method has the beneficial effects that the steps are simple, the design is reasonable, construction is easy and convenient, the use effect is good, the deep foundation pit supporting construction process can be completely easily, conveniently and quickly, the cost of the adopted prestress anchor cables is low, the anchoring force is high, and the deep foundation pit can be supported effectively.

The invention discloses a low-energy drying treatment method for discharged sludge. The method comprises the following steps: after adding water into discharged sludge in a first reaction tank so as to carry out physical degradation on the discharged sludge and then uniformly stirring the obtained mixture completely, conveying the obtained discharged sludge with water content of 80% to a second reaction tank; adding a chemical reagent into the second reaction tank so as to carry out chemical conditioning and modification on the discharged sludge, then carrying out mechanical filter pressing on the sludge so as to reduce the water content of the sludge to 40-45%, and preparing the sludge into mud cakes; and ventilating and drying the mud cakes in a greenhouse shed so as to reduce the content content of the sludge to 20-30%. The method disclosed by the invention is suitable to be applied to the reclamation and reduction treatment of discharged sludge of municipal wastewater treatment plants, and the volume of the treated sludge is reduced by more than 70%, thereby effectively saving landfill land resources; the sludge treatment method is simple in operation, low in cost and low in energy consumption; by using the method disclosed by the invention, harmful substances in the sludge can be degraded completely, thereby avoiding the secondary pollution to the environment; meanwhile, the mud cakes can be directly used as boiler fuel so as to recycle heat energy.

The invention discloses a method for realizing multilane free stream electronic charging through an orthogonal phase control array antenna, and the method comprises the steps that: step 1. vehicle detection and electronic charging transaction; step 2. vehicle position matching and validity verification; and step 3. background data process. In the step 1, a vehicle and road communication and electronic tag locating subsystem receives and scans an uplink signal through an orthogonal phase control radiating unit of the antenna, detects the transverse and vertical migration angles of a vehicle-mounted electronic tag relative to the antenna, and calculates the position of the vehicle-mounted electronic tag, a vehicle detecting and locating subsystem detects the contour of a vehicle, provides station passing time and position information of the vehicle and triggers an image snap-shot procedure, and an image snap-shot and plate number identification subsystem performs image snap-shot and plate number identification of the vehicle; in the step 2, a lane logic coordination control system is used for matching the vehicle-mounted electronic tag position with the vehicle position to find out legal vehicles and illegal vehicles; and in the step 3, a background data processing system performs successive performs following-up processing on a locating matching result in the step 2, an electronic non-parking charging transaction result, and vehicle image snap-shot and plate number identification results.

The invention relates to a vertical lift type parking equipment, comprising a steel structure body. A plurality of automobile carrying plates and lift carriers are arranged on the steel structure body. A lift driving mechanism is arranged on the lift carrier. A cross beam of the steel structure body is provided with a cross sliding type driving mechanism, on which a roller is arranged, and a cross sliding type carrier is arranged on the roller of the cross sliding type driving mechanism at an exit layer. A longitudinal beam of the steel structure body is provided with a longitudinal movement orbit and a longitudinal movement mover is arranged on the longitudinal movement orbit at an exit and entrance layer. The automobile carrying plates are comb type automobile carrying plates and the cross sliding type carrier is provided with a comb toothed bar thereon. The parking equipment is short in parking or taking automobiles time, large in the number of parked automobiles, big in parking density, more flexible and convenient in arrangement and very strong in adaptability.

The invention relates to a natural sea area large-scale ecological breeding method of stichopus japonicus, belonging to the field of aquiculture. The method can realize large-scale stichopus japonicus seedling breeding at the natural sea area by the steps of selecting and culturing parent stichopus japonicus, daily management of the parent stichopus japonicus, egg taking and incubating, culturing the young, culturing young stichopus japonicus, classifying offspring seeds and temporary culturing. The method solves the problems of degraded seedling quality, reduced production quality of the seedlings, gradual increment of stichopus japonicus diseases, high energy consumption of a seedling breeding room and the like in the process of seedling cultivation in the existing artificial seedling breeding room, overcomes the technical prejudice that sea cucumber seedlings can not be cultured at the natural sea area in the traditional view, breaks through the inherent thinking set, changes the traditional production way of the artificial seedling breeding room, and can realize ecological breeding in the natural sea area. Furthermore, the method has the remarkable advantages of high survival rate, no pollution and chemical dosing as well as being nuisanceless.

The invention discloses an automatic bowl blank transfer device. A bowl blank is transferred to a station B by a conveyer belt II; after a timer counts for four times, the conveyer belt II stops; a big belt wheel drives a horizontal movement plate to move to a position above the bowl blank at the station B through a lead screw; when a right travel switch is triggered, the horizontal movement plate stops moving; meanwhile, a sucker cylinder acts to enable a sucker to approach the bowl blank and suck the bowl blank; then the bowl blank leaves the conveyer belt II, and a transposition motor acts to enable a sucker mounting plate and the sucker to transpose by 90 degrees; when the bowl blank is positioned above a conveyer belt I at a station A, the sucker approaches the conveyer belt I and the bowl blank falls onto the conveyer belt I, so that the bowl blank transfer process is completed. The device solves the problems of low transfer efficiency, high labor intensity and low automation degree of the traditional equipment, and has the advantages of convenience for forming an automatic production line and simple operation.

The invention discloses a precise measuring method for a moving position and a moving gesture of a motor vehicle. The method comprises the following steps of a preparation step before the measurement and a real-time measurement step, wherein the preparation step before the measurement comprises the steps of establishing an RTKGPS (real-time kinetic global positioning system) base station, establishing a wireless data communication link, drawing an examination field or a examination road electronic map, installing a car-mounted detection device on the motor vehicle and measuring a relative coordinate of key points of the motor vehicle outline; and the real-time measurement step comprises the steps of measuring and calculating a precise three-dimensional position coordinate and a gesture angle as well as a position relation among different signs, marked lines and static objects of the motor vehicle in the examination field or the examination road electronic map. Due to the adoption of the precise measuring method, the measurement equipment is unnecessary to set on the examination field or the examination road, the detection can be realized by directly adopting the communication between the car-mounted detection device and the base station in the measurement, and the operation cost of the position and gesture detection equipment of the motor vehicle can be reduced when in use; and the detection way is simple, convenience in operation can be realized, continuity in detection can be realized, and the measurement precision is high.

The invention discloses an assembly method of a multifunctional smart lighthouse suitable for construction of a smart city. Based on existing streetlamp posts, LED lamps and maintain ports of a town, at the premise of ensuring the technical requirements on due mechanical strength, tightness and the like in lamp posts, wireless Wi-Fi transmitters, traffic lights, vehicle speeding photographing devices, cameras, RFID (radiofrequency identification) devices, environment monitors and the like are added; based on the provision of wireless Wi-Fi internet services, a smart lighting system, a smart traffic system, a smart security system and a smart environment monitoring system are integrated. The streetlamps are applied to each corner of the town; according to the method, land resources used by existing town streetlamps are made full use, and in current construction of smart cities, the difficulties that an information sensing system is difficult to re-network and that repeated construction of such system occurs are overcome.

The invention discloses a concrete material which totally adopts industry solids waste to replace cement preparation, comprising a gelled material and a skeletal material. The gelled material is composed of the components with the following weight portions of 36 to 75 portions of fluidized bed burning coal solid sulfur clinker, 9 to 25 portions of acetylene sludge and 6 to 15 portions of phosphogypsum; because the cementing materials such as cement, lime, asphalt, and the like, are not needed at all, material costs are remarkably reduced, great amount of industry solids waste is used to produce building materials, especially the fluidized bed burning coal solid sulfur clinker is used to serve as raw material, environment pollution is avoided, and land resources are saved.

The invention discloses a power-free integrated constructed wetland waste water treatment technology. The technology is characterized in that a vertical-flow waste water ecological purifying tank is divided into an upper region and a lower region; a waste water pre-treatment system is one or more pre-treatment processes of a grid, a three-grid type settling tank and an anaerobic tank, living waste water after the pre-treatment enters a water distribution system by being lifted by a water pump or relying on the natural liquid level height difference; the waste water after the pre-treatment is evenly distributed on a nitrification region of the vertical subsurface flow ecological purifying tank through a cross water distribution pipe network and is sequentially vertically penetrated in the nitrification region and an artificial matrix layer of a denitrification region; the water distribution system implements intermittent water distribution for the ecological purifying tank and is provided with a power-free gas distribution system at the bottom and in the upper nitrification region for realizing the continuous oxygen restoration of the nitrification region; outlet water of the upper nitrification region directly enters the lower denitrification region; a water collecting and water outlet system is arranged in the lower denitrification region, a water collecting port is arranged below the denitrification region, and a water outlet is arranged above the denitrification region, thereby leading the outlet water to maintain a certain water level in the denitrification region. The technology can realize the power-free natural oxygen restoration of the wetland, occupy small area and realize the nitrification-denitrification integrated high-efficient nitrogen removal.

The invention relates to intelligent three-dimensional storage equipment which comprises a traveling mechanism, a lifting mechanism, a handling mechanism, a combining mechanism and a standby mechanism; a traverse move main car with a carrier is used for finishing the storage of cargo space at each layer; the traverse move main car moves to a row where a corresponding cargo loading container is located by the traveling mechanism arranged on the main car, the carrier is sent out to move downwards; when being in place, the carrier is combined with the container body placed in a traverse move trolley; the container body is adsorbed by a rectangular electromagnet and lifted, and the lifting action of the cargo loading container is controlled and accomplished according to the command sent by a spiral encoder, so as to achieve the purpose of loading or unloading cargoes; the storage equipment is provided with two mechanisms to realize the functions of lifting and lowering; by adopting PLC program control, the storage equipment can greatly ease labor intensity, speed up cargo loading and unloading, reduce access ways of large cargoes, and has the volume fraction over 10 times higher than that of a common warehouse with the same area, thus greatly facilitating sort management of cargoes.

The invention discloses a method for producing bricks from silt and sludge, which comprises the following steps of: stacking silt and sludge of which the water content is 80-85% in a parking field to enable the water content of the silt and the sludge to be less than or equal to 60% for standby; conveying the silt and the sludge of which the water content is less than or equal to 60% to a primary stirrer through a feeding box for stirring together with fly ash, rice chaffs or wood flour, coal slag and black sand to enable the water content of the mixture to be less than or equal to 30%; putting the mixture in an aging field for aging to enable the water content of the mixture to be less than or equal to 22%; conveying the mixture to a secondary stirrer through the feeding box, and adding water or fly ash according to the degree of dryness and wetness to obtain a blank preparing material of which the water content is less than or equal to 20%; preparing the blank preparing material into a wet blank of which the water content is 17.8-18.8% through extruding and cutting devices; and roasting to obtain a finished product brick. In the method of the invention, silt and sludge are used as main raw materials for producing bricks; on one hand, clay does not need to be used, and the cultivated land can not be destroyed; and on the other hand, the invention solves the problem of treatment of silt and sludge, saves land resources and has obvious effect of environmental protection.

The invention discloses a construction method for an integral straight middle wall type double-arch tunnel. The construction method comprises the following steps that a middle pilot tunnel is excavated according to design requirements, preliminary bracing of the middle pilot tunnel is carried out, the middle wall of a double-arch tunnel is constructed in the middle pilot tunnel, the top of the middle wall is of a Y-shaped structure, a middle wall top cavity is reserved between the top of the middle wall and the top wall of the middle pilot tunnel, a drainage system is arranged on the middle wall, backfill is carried out on the middle wall top cavity, a left hole and a right hole of the double-arch tunnel are excavated according to the design requirements, and pavement construction and tunnel mechanical and electrical installation engineering construction are respectively carried out on the left hole and the right hole after construction. Compared with an identical three-layer combined type straight middle wall structure, a three-layer combined type curved middle wall structure and a five-layer combined type curved middle wall structure, the construction method can effectively reduce the thickness of the middle wall, a structure is simple, construction is convenient, construction cost is reduced, the occupied area of a tunnel outer lead is reduced, and land resources are saved.

The invention relates to an existing building surrounding type story-adding structure and a construction method thereof, and belongs to the field of structure seismic strengthening. According to the invention, outer covering type steel structures are added on the periphery of an existing building, and the steel structures surround the existing building and are connected end to end on the plane, so that the horizontal seismic load of the whole structures can be effectively increased. According to the invention, when newly added load-bearing type steel columns of the surrounding type structures exceed the top part of the existing building, load-bearing cross beams are arranged and connected with the newly added load-bearing type steel columns. The whole load at the upper parts of the newly added load-bearing cross beams is transmitted to the newly added load-bearing type steel columns and then the foundation. The surrounding type story-adding technology enables the new structures and the old structures to be closely connected in a hinged or rigid manner, so that the structure stability is increased, the stress system of the whole structure is reasonable, and the safety and the reliability of the whole structure are ensured. Through existing building surrounding type story-adding construction, the present problem about housing difficulty of people is solved and meanwhile a great deal of land resource of the nation is saved.

The invention discloses a real-time traffic flow monitoring and early warning induction management system for highway and a monitoring method. The system uses a single vehicle as a basic unit and comprises a vehicle tracker arranged on the vehicle and a monitoring center for carrying out wireless communication with the vehicle tracker; and in the system, a GPS (Global Position System) module of the vehicle tracker is used for receiving vehicle position information in real time, a wireless communication module sends real-time vehicle information to the monitoring center through a wireless network under the control of a processer, a communication module of the monitoring center receives the vehicle information and stores the vehicle information in a storage module, and a data analysis module analyzes the vehicle information and displays an analysis result through an input and output module. By adopting the invention, the sectional real-time traffic flow information of any point on a highway section can be precisely obtained, and accidents or broken down vehicles occurring on any place and in any time on the highway can be found out in the first time so as to decrease the influence of an traffic accident on the traffic condition to the minimum and provide precise reference data for the routing maintenance, operation, management and development of the highway.

The invention discloses a method for extracting alumina from fly ash. The method comprises the following steps of: a), acid treatment, i.e. mixing and feeding hydrochloric acid and the fly ash into a digester lined with a polyfluortetraethylene material for dissolving, carrying out separation on dissolved slurry by a settling tank, carrying out evaporation, crystallization, roasting and decomposition on the upper overflow slurry to form active initial alumina and hydrogen chloride gas, and returning the hydrogen chloride gas to a fly ash dissolving process after the hydrogen chloride gas is recovered to prepare acid; and b), Bayer process treatment, i.e. mixing the active initial alumina and circulating mother liquor, sending the mixture into an autoclave for dissolving, carrying out separation on the dissolved slurry by the settling tank, carrying out fine filtering on the upper overflow slurry to obtain refined fluid, mixing the refined fluid and seed crystals of aluminium hydroxide, carrying out seed crystal digestion to obtain decomposition mother liquor and aluminium hydroxide, returning the decomposition mother liquor to the process of dissolving the active initial alumina after the decomposition mother liquor is evaporated, and carrying out filtering, washing and roasting on the aluminium hydroxide to obtain an alumina product. Due to the adoption of the method, the metallurgical alumina which meets the national standard requirements can be prepared.