109results about How to "Reduce operational security risks" patented technology

The invention discloses a track center line automatic detection method based on vehicle-mounted mobile laser point cloud. The method comprises the following steps: S1, point cloud segmentation of a roadbed and a track; s2, track point cloud classification; s3, automatic track center line detection: according to a cross section design drawing of a standard steel rail, automatically reconstructing astandard three-dimensional geometric model of the steel rail in a segmented manner, carrying out iterative registration on the standard steel rail model and the segmented steel rail point cloud in the S2, and carrying out automatic reconstruction on a segmented three-dimensional model of the steel rail; calculating track geometric parameters by utilizing the reconstructed track three-dimensionalgeometric model, calculating track center line point locations in a segmented manner on the basis of the reference track, and sequentially connecting the track center line point locations extracted inthe segmented manner to form a line center line. According to the method, roadbed and rail point clouds can be rapidly segmented, the area of rail point cloud classification search is reduced, automatic classification of laser point clouds on the surfaces of left and right steel rails is realized, and the precision requirement of existing rail transit midline detection can be met.

The invention discloses a monitoring device and an online monitoring method of a quick closing process of a steam turbine inlet valve. The monitoring device comprises first to n-th main valve displacement transducers for measuring the opening of a main valve of the steam turbine, first to m-th control valve displacement transducers for measuring the opening of a control valve of the steam turbine, a first pressure sensor for measuring the oil pressure of a servomotor, a second pressure sensor for measuring the oil pressure of AST, a trip circuit for measuring trip signals, a high-speed data acquisition device and a computer. The on-line monitoring method comprises the following steps of initialization, parameter setting, acquisition, alarming, displaying and querying. The monitoring device and the online monitoring method provided by the invention have the beneficial effects of realizing real-time online continuous monitoring of a steam turbine valve closing process, evaluating and early warning the valve state, realizing fast fault positioning, and having an important significance for realizing the predictive maintenance of equipment, reducing the operational security risk, and ensuring the reliable operation of the steam turbine.

The invention belongs to the technical field of steel structure construction, and particularly relates to an installation method of a special-shaped and curved-surface suspension type steel structuresystem. The problems are solved that the construction precision of a traditional installation method is difficult to guarantee, the construction period is long, a large amount of cost needs to be invested in scaffold and inclined suspender layer-by-layer hoisting, and many high-altitude hidden dangers exist. The special-shaped and curved-surface suspension type steel structure system comprises a core cylinder, a giant truss, a temporary support, an inclined suspender and beams of all floors. The installation method comprises the following steps that S1, the core cylinder is constructed; S2, the temporary support is installed; S3, the giant truss is assembled on the ground; S4, the giant truss is hoisted; S5, the inclined suspender is installed; S6, the temporary support is unloaded; S7, the beams of all the floors are hoisted; and S8, the displacement of the giant truss is monitored in the steps of S4-S7. According to the installation method, the construction precision is guaranteed, the installation efficiency is high, the installation construction period is shortened, and the operation safety risk is reduced. The erection and hoisting cost of a scaffold is saved, the high-altitude butting joints are reduced, the near-edge protection cost is reduced, and therefore the construction cost is reduced.

The invention discloses a measuring device for thrust loading of a sliding thrust bearing. The measuring device comprises an annular base plate, wedge-shaped sliding blocks and resistance strain type force meters. The annular base plate is coaxially arranged between a thrust block holder and a thrust bearing shell in a sleeved mode. A plurality of radial holes are formed in the circumferential direction of the peripheral end face of the annular base plate. Through holes communicated with the radial holes are formed in the positions, corresponding to the radial holes, of the shell. The wedge-shaped sliding blocks are contained in the radial holes in the annular base plate through the through holes in the shell, and can be pulled out of the shell from the radial holes through the shell. The resistance strain type force meters are contained in the sliding blocks, and one end of each resistance strain type force meter abuts against and is connected with the thrust block holder. The invention further discloses a measuring device for the thrust loading of the sliding thrust bearing, and the application of the measuring device and method. According to the device and the method, the structure of the thrust bearing is slightly modified, and particularly the supporting structure of a thrust block is not changed; the lubrication performance of the thrust bearing is not affected, and the risks of safety running of the thrust bearing are not increased; meanwhile, the force meters can be easily overhauled and replaced under the condition that the shell of the thrust bearing is not disassembled.

An electrical equipment transformation method comprises the steps: obtaining equipment information of electrical equipment; judging the equipment information by the utilization of preset priority conditions, regarding electrical equipment corresponding to the equipment information which meets the priority conditions as electrical equipment with high transformation priority, and regarding electrical equipment corresponding to the equipment information which does not meet the priority conditions as electrical equipment with low transformation priority, wherein the priority conditions comprise a qualitative judgment condition and a quantitative judgment condition; carrying out electrical equipment risk assessment on the electrical equipment with the high transformation priority, and obtaining a risk value; obtaining operation age limit information of the electrical equipment with the low transformation priority; working out sort information for transforming the electrical equipment with the low transformation priority according to the risk value, the operation age limit information, an economical index value and a developmental index value; transforming the electrical equipment according to the priority and the sort information. By means of the electrical equipment transformation method, safe operation risks existing in the electrical equipment are reduced.

The invention relates to the technical field of Internet of Things equipment, and discloses a wind power generation equipment protection device based on Internet of Things. The device comprises a power generation bin, wherein a transmission shaft is inserted into the right wall of the power generation bin; the outer wall of the right side of the transmission shaft is connected to a drive gear in asleeved mode; the outer wall of the drive gear is engaged with a transmission gear; the left side of the transmission gear is fixedly connected to a generator; the outer wall of the left side of thetransmission shaft is connected to a reduction gear in a sleeved mode; the inner wall of the reduction gear is movably connected to a reduction rod; and the outer wall of the reduction gear is engagedwith a rack. According to the wind power generation equipment protection device based on the Internet of Things, the internal rack pops up through an electromagnetic sleeve, the rack drives the reduction gear to rotate, the reduction gear enables the reduction rod to drive a reduction piece to be attached to the transmission shaft through a guide groove arranged in the front face in order to decelerate the transmission shaft, the generator is prevented from being damaged due to too high rotation speed of the transmission shaft, and the service life of the wind power generation equipment is prolonged.

The invention discloses a PCB cutting protection device and cutting equipment. The protection device comprises baffle plates, a dust sucking motor and a dust sucking box; the baffle plates are fixed on the front side and the back side of a cutting blade; the dust sucking motor is arranged at the lower part of an operation platform, and is connected with the dust sucking box; and in PCB cutting, dust is absorbed into the dust box by the dust sucking motor through a dust hole in the upper part of the operation platform. The PCB cutting protection device and the cutting equipment, provided by the invention, are reasonable in structure and convenient to operate, reduce the operation safety risk, improve the operation environment, and solve the quality problem of cutting deviation; and a blade pressure reducing hole is formed in the cutting blade, so that the stress release and the heat loss of the cutting blade are facilitated, and the PCB cutting quality is improved.

The invention discloses a protective method for a public fuel gas pipeline above ground. The protective method for the public fuel gas pipeline above ground comprises the following steps of: protecting the public fuel gas pipeline above ground by a protective sleeve, determining performance indexes and a geometrical dimension of the protective sleeve, arranging gas-filling holes, gas-exhaust holes and pressure meters in the upper and lower ends of the protective sleeve, and filling the protective sleeve with inert gas. According to the protective method for the public fuel gas pipeline above ground provided by the invention, corrosion damages, on the fuel gas pipeline, of atmospheric pollution can be effectively reduced, the service life of the fuel gas pipeline is prolonged, frequency of maintaining or replacing the fuel gas pipeline is reduced, economic loss caused by repeated investment is reduced, and operation safety risk of the fuel gas pipeline is reduced, and therefore, the protective method has the advantages of low cost, and simple and convenient maintenance.

The invention discloses a contact network height guide and pull-out value automatic detection method based on vehicle-mounted mobile laser point cloud. The method comprises the steps: firstly, setting an angle segmentation threshold value according to a scanning angle corresponding to a track structure and a contact network structure, carrying out the segmentation to obtain a track point cloud and a contact network point cloud, and removing the point cloud noise through a statistical filtering algorithm; secondly, based on a trajectory of mobile scanning, adopting a cuboid segmentation algorithm to segment a steel rail point cloud, and adopting a cylinder segmentation algorithm to segment a contact line and a positioning point cloud; thirdly, using PCA and GICP to register steel rail point clouds, extracting contact line point clouds by RANSAC, and extracting suspension point clouds by a dimension analysis method; and finally, calculating the conduction height and the pull-out value of the contact line according to the conduction height and pull-out value definition. The method has the characteristics of high precision, high efficiency, high automation degree and the like, can be used as an effective supplement of a normal detection mode of the contact network height guide and pull-out value, and serves static acceptance of a newly built railway and operation detection of an existing railway line.

The embodiment of the invention provides a digital traffic sign information processing and analyzing method. The method comprises steps: a step of digital traffic sign data transmission in which the digital traffic sign transmits stored data to an intelligent traffic terminal, wherein the data at least comprise the information content S<c> of the digital traffic sign itself and an initial parameter set P<s> of the traffic sign, a step of data verification in which data verification is carried out after the terminal receives the data to judge the effectiveness of the data, the next step is carried out if passing the verification, otherwise, the step is ended, a step of data matching in which the terminal enables the received data to be matched with the vehicle basic information set B<v> andthe vehicle real-time dynamic information set D<v> stored in the intelligent traffic terminal, and a step of rule determination in which a rule S<v> corresponding to the vehicle is determined.

The invention discloses a tamping vehicle operation process simulation system based on a virtual reality technology. The system includes a video and audio system, a computing center, a control panel and a situational interaction control part, wherein the video and audio system includes an operation scene display device and a sound effect simulation system, the computing center includes an ALC simulation system and an operation control computation system, the control panel includes a tamping vehicle control device, an instrument and an indicating system, and the situational interaction controlpart includes a control terminal. According to a tamping vehicle operation process simulation method based on the virtual reality technology, based on a 3D tamping vehicle model, a 3D scene computation system simulates the situation that in the tamping operation measurement process, a geometrical relationship between multipoint coordinates in a 3D scene line are used, and line parameters in a virtual scene are computed through computer graphics and a numerical computation method. Through the system, related operators can be effectively organized to carry out emergency training and drills for emergencies, which can greatly improve the efficiency of emergency treatment and reduce the risk of accidents.

The invention discloses a video monitoring system and method for a miter gate gap of a ship lock. The system comprises a camera, a video transmission system and an image processing system. A 12V outdoor monitoring LED light supplement lamp and an infrared night vision camera are installed at the closing end position of a miter gate, a door slot video image is transmitted to a ship lock centralizedmonitoring system through a ship lock in-situ optical transmitter and receiver, and the real-time monitoring function of the miter gate gap is achieved. Image graying processing, median filtering denoising, image threshold segmentation, BP neural network algorithm edge detection, edge pixel refinement processing and door gap edge discrete point extraction are carried out on a door slot image, Hough transform method linear fitting, system calibration and mathematical conversion are carried out on the discrete points, and the measurement function of the miter gate door slot is achieved. Real-time monitoring of the closing condition of the miter gate of the ship lock and non-contact real-time measurement of the size of the gate gap can be achieved, reliable water retaining of the miter gateand normal circulation of the operation process of the ship lock are ensured, and door body jamming deformation caused by abnormal closing of the miter gate is prevented.

The invention discloses a tunnel water seepage and harmful gas discharge structure and a semi-closed ice-filled drilling construction method. The structure includes a permeable pipe arranged in a permeable section of a drilling hole. The drilling hole includes the permeable section and a grouting section, the drilling hole is drilled from the side wall of a tunnel, a water stop member is arrangedbetween the permeable section and the grouting section, the permeable pipe is filled with ice, and the permeable section is internally provided with an water inlet of a drainage pipe; and the elevation of the water inlet of the drainage pipe is higher than the elevation of a water outlet of the drainage pipe, and the lift of the drainage pipe is less than the height of a water column correspondingto the atmospheric pressure. According to the tunnel water seepage and harmful gas discharge structure, harmful gases in the surrounding rock in the drainage link can be effectively discharged, the situation that the harmful gas escapes or is greatly accumulated in the surrounding rock is reduced, the safety risk is reduced, and the water-stop member can be effectively supported during grouting,the structure is beneficial to increase the grouting pressure, the negative pressure effect of the permeable section improved, and the tunnel water seepage and harmful gas discharge structure is conducive to ensuring continuous drainage and exhaust effects and is of great significance to solving the problem of tunnel water seepage and gas leakage.

The invention discloses an elevator operation noise diagnose and maintenance method. The elevator operation noise diagnose and maintenance method comprises the following steps: sound in a lift car of an elevator is acquired in real time, and corresponding real-time sound information is generated; the noise standard information of the elevator is acquired from an elevator safety big data platform according to prestored elevator information of the elevator; when the real-time sound information corresponds to the noise standard information according to comparison, standard-exceeding alarming information is generated according to the real-time sound information; and the standard-exceeding alarming information is pushed to an elevator maintenance department according to prestored contact information of the elevator maintenance department, so that the elevator maintenance department can decide whether to maintain the elevator or not according to the standard-exceeding alarming information. The invention further discloses an elevator operation noise diagnose and maintenance system.

The invention discloses a method for synthesizing oligomeric alkyl phosphate by a one-pot method and a reaction device, and relates to the field of flame retardant manufacturing. On the basis of a traditional alkyl phosphate synthesis production process, one-pot synthesis is adopted, the safety risk in the intermediate product transfer process is avoided, meanwhile, the continuous adding mode of solid materials is optimized, a circulating flow jet reaction system is added, and by controlling the temperature, pressure and other conditions of the reaction system, the alkyl phosphate is obtained. Finally, the synthesis process of the oligomeric alkyl phosphate is optimized, the safety risk is reduced, the reaction time is shortened, and the reaction efficiency is improved. The alkyl phosphate oligomer jet circulation flow reaction system can carry out gas and liquid mass transfer reinforced flow circulation in the reaction system, so that the reaction efficiency is greatly improved, and the production period is shortened. When the reaction system is used for synthesizing the alkyl phosphate oligomer, the time for obtaining the product with the same quality is only about 1 / 5-1 / 3 of that of a traditional method.

The invention discloses an automatic speeding illegal act sending system and method for a key transportation vehicle. The system comprises an image collection unit, an image processing unit, a road segment speed limit value storage unit, a speed collection unit, a GPS positioning unit and a speeding sending unit. Mark plates arranged on the road sides are collected, speed limit mark plates and road segment speed limit values are extracted, then the running speed of the vehicle is obtained in real time, and when the running speed of the vehicle exceeds the speed limit value, the speeding information is sent to an owner of the vehicle. The speed limit information in the scheme can change along with changes of the speed limit mark plates in the road signs, a driver regards the speed limit mark plates as the speed limit bases when driving the vehicle, and the problem that as updating of the limited speed lags behind, speeding misjudgment is caused in the prior art is avoided effectively. In addition, as the speeding information is sent to the owner of the vehicle, the driver is supervised, the owner can take measures on the driver if necessary, more binding force is exerted on the driver, the frequency of illegal acts of the speeding driver is reduced, and consequently the road running safety risk is reduced.

The invention relates to the technical field of power grid maintenance. The invention discloses a power distribution network artificial intelligence inspection system. The power distribution network artificial intelligence inspection system comprises a human-computer interface unit server and a human-computer interface unit mobile terminal. The man-machine interface unit server comprises an inspection route making unit, a work task making unit and an inspection defect identification unit. The human-computer interface mobile terminal comprises a work task obtaining unit and a data content acquisition unit, and also includes an intelligent inspection server database connected with the human-computer interface unit server, an inspection result exporting unit connected with the intelligent inspection server database, a result interface connected with the inspection result exporting unit, an intelligent inspection mobile terminal database connected with the human-computer interface mobile terminal, a work task execution unit connected with the intelligent inspection server database, and a task execution interface connected with the work task execution unit. According to the invention, the inspection work efficiency can be effectively improved, and the inspection period is shortened, and the inspection work quality can be greatly improved, and the power grid safety operation risk caused by personnel shortage is effectively reduced.

An electric-power-assisted bicycle timeshare renting system comprises a power-assisted bicycle, a bicycle-mounted central controller, a smart battery and a cloud server. The smart battery is in physical matching or information matching with the power-assisted bicycle for unlocking; the bicycle-mounted central controller is used for identifying matching information of the smart battery and the power-assisted bicycle and controlling an anti-theft lock to be opened to achieve power supply to the power-assisted bicycle controller, or sending the matching information to the cloud server for authentication and opening the anti-theft lock according to a returned command to achieve power supply to the power-assisted bicycle controller; the cloud server is used for conducting user authentication, sending unlocking information and receiving and sending state information of the power-assisted bicycle. An electric-power-assisted bicycle timeshare renting method comprises a bicycle riding mode of conventional shared bicycles and a power-assisted riding mode implemented through smart battery unlocking. By the adoption of a user self-help power switching and battery unlocking mode, a user can master his or her riding requirements at any time; the resource utilization rate is increased, and the operation safety risk and the society use safety risk are lowered.

The invention discloses a turbine residual heat recycling and utilizing system which mainly comprises a residual heat boiler, a hot oil circulating pump, a smoke valve and a field control disc. High-temperature smoke discharged by a turbine motor is used as a heat source and the residual heat of smoke is recycled; heat-conducting oil is introduced to a residual heat boiler heat exchanging disc through a hot oil circulating pump and the heat-conducting oil in a residual heat boiler heat exchanging coiled pipe is heated by utilizing the high-temperature smoke; and after the heat-conducting oil is heated, the heat-conducting oil is returned to a heat-conducting oil system. According to the turbine residual heat recycling and utilizing system disclosed by the invention, the heat energy in turbine smoke can be recycled and the heat-conducting oil can be heated by effectively utilizing the residual heat of the smoke, so that the temperature of the heat-conducting oil is improved, the consumption of fuel is reduced, the load of a previous heat medium boiler is reduced, and the normal maintenance of the heat medium boiler and the normal operation of a hot oil system are guaranteed; and therefore, the risk of safely operating the previous heat medium boiler is reduced, the safety operating factor of equipment is improved and the pressure of outputting crude oil is relieved. Meanwhile, the emission of atmospheric pollutants is further reduced, and energy conservation and emission reduction are realized.

The invention relates to the technical field of bridge engineering, and particularly relates to a steel truss girder cable-stayed bridge and a damper connecting bracket device thereof. The damper connecting bracket device comprises a bracket structure, an upper base, a lower base, a damper or a beam tower longitudinal fixing device or a steel truss girder pushing device, wherein the bracket structure is fixedly connected to the outer side of a lower chord node of the steel truss girder; the upper base is fixedly mounted at the bottom of the bracket structure; the lower base is fixedly mountedat the top of the bridge tower cross beam; one end of the damper, the beam tower longitudinal fixing device or the steel truss girder pushing device is hinged to the upper base, and the other end is hinged to the lower base; the beam tower longitudinal fixing device is used for restraining the steel truss girder in the longitudinal direction of the bridge; and the steel truss girder pushing deviceis used for longitudinally moving the steel truss girder along the bridge. The damper connecting bracket device has the advantages of being large in working space, convenient to operate, low in operation safety risk, capable of arranging a plurality of dampers and diverse in function.

The invention discloses an efficient grinding system for a grinding machine. The efficient grinding system for the grinding machine comprises a grinding cavity and a grinding body; the grinding cavitycomprises a grinding cavity body and a microcrystal abrasion-resistant aluminum oxide lining plate which is formed on the inner side surface of the grinding cavity body; the microcrystal abrasion-resistant aluminum oxide lining plate comprises lining plate units which are cambered surface veneers which are matched with the cambered surface of the grinding cavity body; the adjacent lining plate units are formed on the grinding cavity body in a spliced mode through detachable splicing structures; and the grinding body is a ceramic grinding body which is formed through ball rolling forming and high-temperature sintering forming by adopting abrasion-resistant ceramics as a substrate and adding ultra-fine ground sub-micron low-alkali microcrystals. By means of the efficient grinding system forthe grinding machine, the operating efficiency of the grinding machine can be effectively improved, the line loss is reduced, the operation safety risk and dependence on a grinding aid can be reduced, thus the grinding cost is reduced, and the benefits are improved.

The invention discloses drilling-pressing-tunneling integrated hard rock tunneling equipment, relates to the field of hard rock roadway (tunnel) tunneling, and can reduce potential safety hazards of tunneling work to the minimum and greatly improve the tunneling efficiency. The hard rock tunneling equipment comprises a tunneling machine, a drilling machine system and a hydraulic fracturing system, wherein the drilling machine system and the hydraulic fracturing system are mounted on the tunneling machine; the drilling machine system comprises a drilling machine, a drilling machine mounting table, a drilling arm, a sliding rail and a base; the sliding rail is connected to a rack of the heading machine; the hydraulic fracturing system comprises a water tank, a high-pressure pump, a pressure gauge, a water pressure monitor, a high-pressure pipe and a hole packer, and the high-pressure pump is fixedly connected to a rack of the heading machine. Not only is harmful gas not required to be discharged, but also integrated equipment is not influenced by working face space, so that the maneuverability of a drilling machine and hydraulic fracturing equipment is remarkably improved, and the purpose of improving the working efficiency of tunneling engineering is finally achieved.

The invention provides a cable machine main rope river-passing balance safety device comprising a secondary tower side electric winch, a rear fixed pulley group and a front movable pulley group, wherein the secondary tower side electric winch passes through a pulley group which is formed by the rear fixed pulley group and the front movable pulley group by a drawing steel wire rope; the front movable pulley group is mounted on a temporary bearing cableway through a temporary bearing yard; the front movable pulley group is provided with a rope head connecting part; and the front movable pulley group is connected with a counter weight below the bearing cableway through a suspending frame. According to the cable machine main rope river-passing balance safety device disclosed by the invention, the suspending frame and the counter weight of the front movable pulley group are arranged, so that the gravity center of the front movable pulley group is reduced, and the front movable pulley group can be not unstable in a moving process due to the high gravity center when uneven speed control or weather influences of a last main rope river-passing phase exist or assemblies including system machines, electric parts, the temporary bearing yard and the like have faults; and therefore, the safety of operating personnel, a main rope and pulley assemblies is ensured.

The invention relates to the technical field of power supply, and discloses a standby power supply device and a standby power supply system. The device comprises an energy storage module which is used for providing a standby power supply for a plurality of power distribution devices, a monitoring module which is electrically connected with the energy storage module and is used for acquiring monitoring information of the energy storage module, and a charging control module which is electrically connected with the monitoring module and is used for controlling the energy storage module to output electric energy to each power distribution device according to the monitoring information. The energy storage module is used as the standby power supply of a plurality of power distribution devices, the monitoring module is used for monitoring the working state of the energy storage module, the charging control module is used for controlling the output electric energy of the energy storage module, and the electric energy output by the energy storage module to each power distribution device is controlled. The standby power supply device has the advantages of centralized management and control, low device operation risk, low investment cost, low maintenance cost and the like by using the functional modules, and solves the problems that the maintenance cost is increased and the maintenance efficiency is reduced due to the fact that the power distribution devices are each provided with a standby power supply.

The invention discloses a method for splicing an arc-shaped space truss. The method comprises the following steps of: 1, searching the radius r of each node sphere according to a design drawing, and performing three-dimensional transformation on a spliced downward-pointing triangle truss to form an equilateral triangle truss; 2, marking a connecting line of the two ends of the equilateral triangle truss to be used as an auxiliary line, marking a vertical bisector of the auxiliary line, and establishing a coordinate system by using a central point as the original point and the auxiliary line and the bisector as an X axis and a Y axis respectively; 3, labeling a central three-dimensional coordinate value of each node sphere according to the coordinate system respectively; 4, determining the supporting height of a spherical node at the position of the maximum y value and a difference value between each node and the radius of the spherical node, determining the supporting height of each spherical node according to a coordinate value y, and firmly welding a support with a jig frame; and 5, partially splicing the truss, dismounting an upper spherical node support, and splicing a lower diagonal rod to finish the splicing of the arc-shaped space truss. By the method, a rod piece and a node can be accurately and safely spliced, so that the construction quality and efficiency of an assembly are greatly improved.

The invention relates to an elevator operation stability diagnose and maintenance method. The method comprises following steps: collecting a movement state of an elevator car in a real-time manner and generating corresponding real-time movement information; acquiring movement benchmark information of an elevator from a big data platform for elevator security based on the pre-saved elevator information of the elevator; comparing real-time movement information with real-time movement information; generating excessive alarm information for stability based on real-time movement information when real-time movement information does not correspond to movement benchmark information under comparisons; and sending excessive alarm information for stability to the big data platform for elevator security in order to store and send to an elevator maintenance unit such that the elevator maintenance unit can maintain the elevator based on the excessive alarm information for stability.The invention further provides an elevator operation stability diagnose and maintenance system.

The invention provides a steel coil label recognition method and a steel coil label recognition system. The method comprises the steps of scanning a target number of steel coils entering a steel coil unloading area through a first image collector, and obtaining the three-dimensional coordinates of each steel coil; according to the three-dimensional coordinates of each steel coil, adjusting the photographing position and the photographing angle of a second image collector; photographing the two end faces of the steel coil through the adjusted second image collector, and obtaining a picture with a steel coil label; and decoding the picture with the steel coil label to obtain the steel coil label of the steel coil in the steel coil unloading area. According to the method, the pictures with the steel coil labels collected by the first image collector and the plurality of second image collectors are processed to obtain the steel coil labels of the steel coils in the steel coil unloading area, so that the identification efficiency of the steel coil labels and the working efficiency of the unmanned vehicle are improved, and meanwhile, the operation safety of personnel is improved.

The invention provides a system and method for reducing NOx generated by combustion of a W flame boiler. The system is simple in structure, rational in design, and safe and controllable in operation,and the concentration of the NOx generated by combustion of a low volatile coal fired boiler can be reduced effectively. The system comprises a furnace, a burner arranged on the furnace, flue gas nozzles arranged at the arch part of the boiler and the lower furnace position separately, and a flue gas recirculation system; the flue gas recirculation system comprises a high temperature flue gas mixing inlet pipeline, a flue gas fan and a high temperature flue gas outlet main pipeline which are connected in sequence according to the flue gas flow direction; the input end of the high temperature flue gas mixing inlet pipeline is separately connected with different positions of a tail flue of the furnace for pumping out high temperature flue gas; and the output end of the high temperature fluegas outlet main pipeline is connected with the burner and the flue gas nozzles, and used for introducing high temperature flue gas into the furnace circularly. Through strengthening of preliminary burning of low volatile coal, the oxygen quantity of the preliminary stage of pulverized coal combustion is reduced, and the formation of a local high temperature area of the furnace is inhibited; and the purpose of controlling and reducing the NOx generated by combustion is achieved.

The invention belongs to the technical field of wind power generation, and relates to a control method and system for improving the wind energy utilization rate of a wind turbine generator. According to the control method and system, a blade which is determined to have a blade clamping fault is subjected to variable pitch driver resetting, a variable pitch driver is restarted before the blade clamping fault is not eliminated, and is not directly restarted, so that the unnecessary restarting frequency of the variable pitch driver is reduced, the aging speed of the system is reduced, and the utilization rate of wind energy is improved. According to the control method and system, a delay blade clamping fault factor is further introduced, the probability of occurrence of the blade clamping fault in the future is expected according to the variable pitch state information of the current time period, the variable pitch driver does not need to be directly restarted, the restarting frequency is further reduced, and the wind energy utilization rate is improved.