297results about How to "Avoid stampede" patented technology

The invention provides an emergency early warning method for stampede accident in a public area, the method comprises the steps: picture or video information of people flow in the public area is shot in real time and sent to a local police station monitoring center; the picture or video information is converted into people flow data information and a people density value in the local police station monitoring center; and a substation management server can process the people flow data information and the people density value and judges the actions of alarming. According to the invention, public area precise number of people can be counted according to people flow data of public area inlet and outlet or passageway and people density value of public area, the counted public area precise number of people can be analyzed in real time, if the value reaches a preset alarm threshold value, the police who manage the substation management server can be timely notified, so that the urgent evacuation can be realized, the stampede accident can be avoided; and the method can comprehensively monitor people flow in public area and precisely count number data of people, the jam condition can be avoided, and the practicability is strong.

The invention discloses a fire video detection and early warning method based on image multi-feature fusion, and the method comprises the steps: firstly carrying out the preprocessing after an image sequence of a video is obtained; extracting a foreground region, and obtaining a detected candidate region; secondly, extracting static features and dynamic features from the candidate areas, judging whether flames are contained or not by taking the static features and dynamic features as input of an SVM classifier when the flames are detected, and obtaining whether smoke is contained or not afterlogic combination selection and calculation are conducted on feature judgment results when the smoke is detected; finally, if it is detected that flames or smoke exists, carrying out fire judgment according to the growth trend of the flames or smoke; when it is judged that a fire occurs, carrying out fire alarm on the monitoring site, and otherwise carrying out fire alarm only on the background. The method can be combined with an existing monitoring system to be applied to places such as shopping malls and warehouses, the fire detection and early warning cost is reduced, the detection method is good in generalization ability and applicability, reliable fire detection and early warning functions can be provided, and the method has practical value.

The invention relates to a method and device for estimating the regional population density. The method comprises the steps of obtaining geographical location information of all mobile terminals within a signal coverage range of a base station; determining the number of mobile terminals in a target region according to the geographical location information of all mobile terminals; and estimating the population density of the target region according to the number of the mobile terminals in the target region, wherein the target region is located within the signal coverage range of the base station. The technical scheme provided by the embodiment of the invention does not depend on video monitoring equipment and sensors, can greatly save the population density monitoring cost and reduces the complexity of population density calculation; and population density monitoring is enabled to realize a geographical range of almost 100% and coverage almost without blind point with the aid of the universality of the communication network coverage, the number of people in crowded areas such as shopping malls, squares and tourist attractions can be effectively controlled through the monitoring forthe population density, and the safety accidents such as congestion and stampede are prevented.

The invention relates to a visitor flow data analysis, early-warning, and display system comprising an application server, an algorithm server, a management terminal and a video acquisition terminal. The application server consists of a data information receiving module, a data information classification module, a data information comparison module, a data information determination module, an early warning module, and an alarming module. The algorithm server includes a video signal receiving module, a video signal processing module, and a data signal transmission module, wherein the modules carry out communication successively. According to the invention, with the system, visitor flow information in a channel can be collected and analyzed precisely, the monitored visitor flow information can be analyzed and compared in real time, early warning can be carried out effectively before the congestion upper limit is reached, and the management terminal can be notified timely, so that problems like information delay can be solved. The system has comprehensive functions and high practicability; and a channel stampede caused by congestion can be avoided.

The invention discloses a density crowd counting method based on the HOG characteristic and the color histogram characteristic. The method includes the following steps that S1, the HOG characteristic of an acquired image region is extracted, and the color histogram characteristic of a detection window in which the HOG characteristic is generated is extracted; S2, a first SVM classifier is acquired based on HOG characteristic training, and a second SVM classifier is acquired based on color histogram characteristic training, wherein the first SVM classifier is used for pre-estimating a detection region, and the second SVM classifier is used for secondarily classifying the pre-estimated detection region; whether the detection region is a head region or not is determined by weighting and combining results acquired by the two SVM classifiers; S3, according to the detected head region, the number of crowds in a video can be counted through a region matching method based on an optical flow method. The density crowd counting method based on the HOG characteristic and the color histogram characteristic is good in accuracy and anti-interference performance.

The invention discloses a cross-scene target automatic identification and tracking method and the application thereof. The method comprises the following steps: a tracking target is tracked in a monitoring scene; when the tracking target is lost, the extraction model detects the tracked actor; the Euclidean distance between the actor sequence feature and the tracking target feature is calculated, and doer re-identification is carried out; the actor detection and actor re-identification is performed on multiple paths of scenes, and cross-scene actor identification and tracking is performed; the FACENET convolutional network face recognition technology is used for recognizing the actor, and identity recognition of the tracking target is carried out; the crowd density is estimated by adopting CSRnet, computing resources are allocated according to a crowd density threshold value, and early warning is performed on the monitoring area exceeding the set threshold value; key targets are searched and matched in all video monitoring scenes according to the retrieval conditions, and all targets meeting the conditions are selected. According to the invention, the generalization ability of the actor re-identification model in different scenes is improved.

The invention discloses a mesh generation-based crowded stampede pre-warning method and device. The mesh generation-based crowded stampede pre-warning method comprises the following steps of: determining a to-be-monitored target area; carrying out mesh generation on the target area according to a preset mesh generation rule; determining a crowding degree warning value of each mesh; judging a size relationship between a crowding degree of each mesh and the crowding degree warning value of the mesh in a process of monitoring the target area; and determining whether to output pre-warning information or not according to a judging result. By applying the technical scheme provided by embodiments of the invention, the method and device are high in correctness and strong in timeliness, and can be used for avoiding crowded stampede events to the greatest extent.

The invention relates to a high-frame wide-body electric vehicle and an on-off device and a quick escape system thereof. The vehicle comprises a vehicle body, wheels, and a power system, wherein the vehicle body comprises a carriage and a chassis; a plurality of wheels are arranged below the chassis, and are connected with the vehicle body through brackets; a common car can pass below the chassis; and the top of the vehicle body is provided with entrances/exits for passengers to get on or off the vehicle and staircases. The on-off device comprises an elevated bridge erected above a road, and stations on two sides of the road; and two sides of the carriage are provided with escape doors. The top of the vehicle body is provided with the passenger entrances/exits, and bridge stations are arranged above the road, so that the passengers get on or off the vehicle easily, and a passage for pedestrians to cross the road is increased. In an emergency state, the passengers can slide out of the carriage through the escape doors, the old and children are easily evacuated particularly, and the safety of the vehicle is improved. The invention is an economic, practical and feasible public transport choice in modern cities, and can effectively improve the difficult situation of traffic jams of urban roads at present.

The present invention provides a hot spot area determination method and a hot spot area determination system. The method includes the following steps that: the network connection information of mobile terminals in each base station is acquired; the network connection information of the mobile terminals is stored in a distributed manner; analysis processing is performed on the network connection information of the mobile terminals according to the configuration information of sub-areas, so that the mobile terminal density of each sub-area is generated; and hot spot areas are determined according to the mobile terminal density of each sub-area. According to the hot spot area determination method and the hot spot area determination system of the invention, based on position related information generated when the mobile terminals are switched between the base stations and sectors, the position related information of the mobile terminals are automatically collected and analyzed; people flow states of specific areas are tracked and detected in real time; the people gathering states of the specific areas are obtained dynamically by doing statistics and displayed; and therefore, areas that are hot spot areas can be sensed. Thus, with the method adopted, the areas that are hot spot areas can be sensed accurately, infrastructure construction and optimization of the areas can be benefitted, and accidents such as congestion or stampede can be prevented.

The invention discloses a firefighting system oriented to an intelligent building. The firefighting system comprises a central control module, a terminal fire extinguishing module, an alarm module, aventilation module, an emergency evacuation module, a monitoring module and a smoke discharge module; the terminal fire extinguishing module, the alarm module, the ventilation module, the emergency evacuation module, the monitoring module and the smoke discharge module are controlled to operate through the central control module; the monitoring module sends monitored information to the central control module after detecting an origin of fire the building; the central control module receives the information and judges fire behavior, and sends signals to the terminal fire extinguishing module, the alarm module or the emergency evacuation module according to preset standard; the smoke discharge module and the ventilation module respectively control a firefighting exhaust system and a firefighting ventilation system in the building. The firefighting system oriented to the intelligent building disclosed by the invention is convenient for operation and use, the intelligence degree of the firefighting system of the entire building can be effectively improved, the security is high, the firefighting cost and the loss caused by fire disaster are reduced, and the practicality is high.

The invention relates to a charging and power supply system for a new-energy automobile. The charging and power supply system comprises a slide rail fixedly mounted in the ground and a charging pile, wherein the charging pile is fixedly mounted at the upper end of the left side of the slide rail, a transverse slide groove which is provided with an upward opening and extends leftwards and rightwards is arranged in the slide rail, a mounting groove which is located at the left end of the slide groove and provided with an upward opening is further arranged in the slide rail, a slide seat which can slide leftwards and rightwards is mounted in the transverse slide groove, a storage box is fixedly mounted at the upper end of the slide seat, a storage cavity is arranged in the storage box, a through groove communicated with the outside is arranged at the upper end of the right end wall of the storage cavity, a storage groove with a rightward opening is arranged in the upper end of the storage box, a slide threaded rod is mounted in the slide seat in a threaded and matched manner, the left end and the right end of the slide threaded rod are rotatably mounted in the left and right end walls of the transverse slide groove, the left end of the slide threaded rod extends into the mounting groove, a drive bevel gear is fixedly mounted at the left end of the slide threaded rod, a slide motor is fixedly mounted in the left end wall of the mounting groove, and the slide motor is in power connection with the slide threaded rod.

The invention discloses an electric scooter. The electric scooter comprises a front wheel frame, a rear wheel frame and a main frame connected with the front wheel frame and the rear wheel frame. The main frame comprises a first support connected with the front wheel frame and a second support connected with the rear wheel frame. The first support comprises a battery installation part, and an obtuse angle is formed between the battery installation part and the second support. The battery installation part is provided with a containing cavity used for containing a battery module. The battery module of the electric scooter is installed on the first support, so that tread in the riding process of a user is avoided, and the risk of battery damage is lowered. The containing cavity in the first support can facilitate installation and take-out of the battery module. The obtuse angle is formed between the battery installation part and the second support, that is, the battery installation part is arranged obliquely relative to the horizontal plane, and therefore the length of the main frame can be reduced.

The invention relates to a construction method of a prefabricated box beam. The construction method comprises the steps that (1), construction is prepared; (2), a steel reinforcement cage is bound; (3), hoisting construction of a box beam steel reinforcement cage is carried out; (4), a box beam template is arranged in a supporting mode; (5), concrete pouring construction is carried out; (6), the prefabricated box beam is subjected to steam curing; and (7), the prefabricated box beam is subjected to wet curing. The construction method of the prefabricated box beam has the beneficial effects that the position of box beam stirrups can be limited by stirrup embedded grooves in stirrup limiting plates, the positions of a box beam longitudinal bar on the lower layer and a box beam longitudinal bar on the upper layer are correspondingly limited by a longitudinal bar limiting groove and a longitudinal bar limiting ring, and the difficulty of binding and positioning steel reinforcements of thebox beam steel reinforcement cage is reduced; and meanwhile, a hanging platform plate is arranged on the upper part of an upper-layer tread plate, the horizontal position of a tread plate sliding beamcan be adjusted through sliding beam rollers, and the box beam steel reinforcement cage is prevented from being treaded in the construction process of the box beam steel reinforcement cage.

The invention provides a solar battery module which comprises tempered glass and battery pieces and further comprises a hydrophilic coating arranged on the surface of one side of the tempered glass far away from the battery pieces and capable of absorbing water. An assembly method of the solar battery module is further provided. The assembly method includes welding the battery pieces into a battery string, laying the battery string into a battery panel, conducting EL test on the battery panel, laminating the battery panel to obtain a solidified battery panel, trimming the solidified battery panel, conducting EL test on the solidified battery panel, arranging the hydrophilic coating on the surface of the tempered glass, assembling a frame on the solidified battery panel, welding a wiring box on the solidified battery panel and detecting the solidified battery panel. Due to the fact that the hydrophilic coating is arranged on the tempered glass, the solar battery module does not need to be cleaned manually, and damage to the solar battery pack is avoided.

The invention discloses an automatic dung clearing cart and dung clearing method for a pig farm. The dung clearing cart comprises a cart body, a main controller and multiple cart wheels, wherein two of the cart wheels are each driven by a driving motor, and all the driving motors are connected with the main controller used for controlling cart wheel driving and differential swerving; the dung clearing cart further comprises a dung clearing shovel, a movable plate and multiple electric push rods, the movable plate is connected with a cart body base plate and can rotate in the horizontal direction relative to the cart body base plate, and one end of the movable plate is hinged to the dung clearing shovel; the electric push rods are connected with the two ends of the dung clearing shovel and driven by the master controller to drive the dung clearing shovel to swing leftward and rightward as well as upward and downward. The dung clearing cart further comprises a touch prevention device which comprises a rotating disc, an elastic hammer, an elastic protruding object and the like, and when the dung clearing cart works, the rotating disc drives the elastic hammer to rotate to drive pigs to keep away from the dung clearing cart. Multiple ultrasonic wave sensors used for sensing barriers are further arranged at the periphery of the dung clearing cart. The automatic dung clearing cart and dung clearing method have the advantages of being flexible to operate, high in automation degree, high in efficiency and the like.

The invention provides a construction technology of a straw concrete formwork-removing-free dense-rib laminated floor slab. A floor bottom formwork is formed by combining a prefabricated straw lightweight aggregate concrete slab and a rib beam bottom formwork and used as a supporting base of a straw concrete removing-free formwork after concrete is poured, so that the straw concrete removing-free formwork is firm and reliable; through connecting of a vertical supporting rod spring cushion and the rib beam bottom formwork, a vibration exciter is fixed on a vertical supporting rod; and by controlling opening and closing of the vibration exciter, vibration of the vibration exciter is transmitted to the rib beam bottom formwork through the vertical supporting rod, vibration of the rib beam bottom formwork is transmitted to the straw concrete removing-free formwork, even and effective vibration of the whole floor slab is achieved, vibrating is more compact, damage to the straw concrete removing-free formwork caused by impact load and trampling of people on the slab on steel bar are avoided, a construction site is safer, and the pouring quality of concrete is improved.

A charging structure for an electric vehicle comprises a power supplying pile body, a rotating groove is formed in the power supplying pile body, a storage groove is formed in the right end surface of the power supplying pile body, a suspension groove is formed in the upper end wall of the storage groove, and a rotating motor is fixedly mounted in the upper end wall of the rotating groove; a rotary shaft is connected on the rotating motor in a power mode, a wire winding wheel is fixedly mounted on the rotary shaft, and a charging cable is wound on the wire winding wheel; a sliding chute is further formed in the power supplying pile body, the sliding chute is located below the rotating groove and extends up and down, a mounting groove is formed in the rotary shaft, and the opening of the mounting groove faces the sliding chute; a conductive column is fixedly mounted in the mounting groove, the lower end of the conductive column extends into the sliding chute, and the top end of the charging cable extends into the mounting groove and is fixedly connected with the conductive column; and a sliding block is mounted in the sliding chute and can slide up and down, a conductive groove matched with the conductive column is formed in the upper end surface of the sliding block, and sliding arms are symmetrically arranged on the left and right sides of the upper end surface of the sliding block.

The invention provides a spraying device for livestock. The spraying device comprises a supporting plate, an external connecting pipeline and shower nozzles. The spraying device for the livestock is characterized in that drainage openings are formed in the upper surface of the supporting plate, an iron cage is arranged on the upper portion of the supporting plate, the iron cage is provided with an inlet and an outlet, the external connecting pipeline is provided with a main switch, the external connecting pipeline is further provided with the shower nozzles, and infrared sensors are arranged on the edge sides of the shower nozzles. The livestock can be washed one by one, the stain cleaning effect is improved, mutual squeezing and treading among the livestock are avoided, due to the infrared sensors arranged on the edge sides of the shower nozzles, the water usage amount can be effectively controlled, and therefore water resources are saved. The spraying device for the livestock is reasonable in design, simple in structure and convenient to use.

The invention discloses a new energy car charging device convenient for retracting and releasing wires. The device comprises a pile body, a power connection chamber, a first transmission chamber, a second transmission chamber, a third transmission chamber and a wire retracting chamber are formed in the pile body, the right end face of the pile body is provided with an operating chamber with an opening facing the right direction and a closed chamber, the left end of the closed chamber is communicated with a charging gun placement chamber, the power connection chamber is provided with a slidingblock capable of sliding to the left and right directions, an upper power supply block and a lower power supply block are arranged on the right end wall of the power connection chamber, and the rightend face of the sliding block is provided with an upper power connection hole cooperatively connected with the upper power supply block and a lower power connection hole cooperatively connected with the lower power supply block. The charging device has the advantages of being simple in structure, better achieves the retracting and releasing work of the charging wires and prevents the charging wires from being exposed outside the charging device to be damaged; and the opening and closing of the charging gun placement chamber can be selectively controlled by operating a hand wheel; and the charging device is simple and convenient to operate, has high safety, and greatly reduces the existing risks of electric shock during operation.

The invention discloses eating and feeding equipment for goat breeding. The equipment comprises an eating groove and a feeding groove, wherein the feeding groove is formed in the top of the eating groove; an opening is formed in the top of the eating groove; a feeding opening is formed in the top of the feeding groove; a spiral crushing rod is arranged in the feeding groove; one end of the spiralcrushing rod is arranged in a bearing seat on the inner wall of the feeding groove, and the other end of the spiral crushing rod is in rotary connection with a motor shaft of a mixing motor through aconnecting shaft; the mixing motor is arranged outside the feeding groove; a sliding plate is arranged at the bottom of the spiral crushing rod; an opening is formed in one side of the feeding groove;one end of the sliding plate slides through the bottom of the opening and is provided with a gear; and a plurality of discharging openings are formed in the bottom plate of the feeding groove. By dividing the eating groove into a feed feeding groove and a water drinking groove, goats can be fed and drunk; a baffle plate is arranged outside the opening of the feed feeding groove; and through sliding of the baffle plate, the opening is conveniently shielded, goats are prevented from stepping in the feed feeding groove, and the consumption of the goats is conveniently controlled.

The invention discloses a mountain pasture planting method in the technical field of pasture planting. The mountain pasture planting method includes the steps that a mountain is divided into a mountain-bottom fertile area, a mountainside moderation area and a mountaintop sterile area; blind ditches are laid below soil of the fertile area and soil of the moderation area, extend to the bottom end of the fertile area, and are embedded into the ground by 2 m to 3 m, and the intervals are 4 m to 6 m; an impounding reservoir is built at the bottom end of the fertile area, and pipes are connected between the impounding reservoir and the blind ditches; a water pump is connected to the impounding reservoir, and water pipes are connected to the water pump and laid on the ground; warm-season annual gramineous pasture is planted in the fertile area, warm-season perennial compositae pasture and cool-season perennial legume pasture are mixed and planted in the moderation area, and perennial water conservation pasture is planted in the sterile area. As the blind ditches and the water pipes are arranged, effective control to the soil water content of the mountain is achieved, and occurrence of pasture withering and occurrence of pasture waterflooding are avoided; meanwhile, different soil layers are reasonably planted, and the yield of pasture is increased while water and soil losses are reduced.

The invention discloses a mesh generation-based crowded stampede pre-warning method and device. The method comprises the following steps of: determining a to-be-monitored target area; carrying out mesh generation on the target area according to a preset mesh generation rule; determining a body posture dip angle warning value of each mesh; judging a size relationship between a body posture dip angle of a staff in each mesh and the body posture dip angle pre-warning value of the mesh in a process of monitoring the target area; and determining whether to output crowding pre-warning information according to a judging result. By applying the technical scheme provided by embodiments of the invention, crowded stampede pre-warning can be carried out timely and correctly, so that the crowded stampede events are avoided.