93results about How to "Keep yourself safe" patented technology

The invention relates to an intelligent traffic system-based intelligent vehicle lane changing decision-making method. The method comprises the following steps of firstly, parsing the received broadcast data of an intelligent traffic system by an intelligent driving system, and extracting the event information; secondly, completing the coordinate conversion of a road event by the intelligent driving system, and obtaining an event influence factor according to the event information; finally, according to the event overall influence factor and the judgment result that the current road environment allows the lane changing decision of a vehicle, allowing the lane changing path re-planning, simultaneously calculating the desired behavior of the vehicle and changing the lane of the vehicle. According to the technical scheme of the invention, according to the attribute of a road event ahead of the vehicle and the environmental information around the vehicle, the influence factor of the current vehicle driving road is calculated. Therefore, the necessity, the security and the reliability of the lane changing decision of an automatic driving vehicle are evaluated. Meanwhile, preparations are made in advance before the lane changing of the vehicle.

The invention discloses a method for culturing pleurotus eryngii. The method comprises the following steps of: selecting saw powder of alfalfa growing in organic soil, wild nuts in mountain and wild trees in mountain, mixing, fermenting, sterilizing, and inoculating the sterilized fermentation product to pleurotus eryngii hypha to culture to obtain mature pleurotus eryngii. By adopting the alfalfa growing in the organic soil, the problem that the alfalfa growing in common soil contains chemical fertilizer, pesticide residue and the like is solved, and harm of chemicals to a human body is solved; meanwhile, because the alfalfa is selected as one of the culture medium materials for culturing the pleurotus eryngii, the germination rate of the pleurotus eryngii can be increased by using the alfalfa to culture the pleurotus eryngii; and because the alfalfa is used as one of the culture medium materials, the growth speed of hypha can be increased, so that the production efficiency of the pleurotus eryngii is increased, and the economic benefit of the pleurotus eryngii is increased. The method has the advantages of achieving the best sterilization effect, saving the sterilization time, being simple and easy in material selection, saving a large amount of labor, reducing the production cost and increasing the economic benefit.

The invention discloses a heavy duty stacker for containers. The heavy duty stacker comprises a stacker frame, a safety protection device, a loading platform, a container hooking and taking device, a lifting device, an operation driving device and an electrical control device, wherein the stacker frame comprises four upright posts, an upper cross beam and a lower cross beam; the safety protection device comprises a cargo state detection device, a broken rope protection device, a power outage protection device, a travel speed-limiting device, a detection and positioning device and a progression speed reduction, walking emergency stop and retreat speed reduction switch; the container hooking and taking device comprises a lower fork, a middle fork, an upper fork and a hooking and taking driving mechanism composed of a normally closed electromagnetic braking motor, a chain wheel and a chain; the lifting device comprises a speed reduction motor, a pulley group, a steel wire rope reel, an encoder and a steel wire rope; and the operation driving device comprises a motor, a driving wheel, a driven wheel and an encoder. The heavy duty stacker is reasonable in structural design, strong in operability, good in safety performance and good in stable performance, and can meet the loading demand of large containers at ports and docks, and be convenient for popularization.

The invention discloses an agricultural equipment gearbox coating line which comprises a line feeding area, a washing area, a drying area, a paint spraying area, a levelling area, a finishing coat drying area, a line discharging area, a rail, a coating assembly line chain, a plurality of lifting appliance assemblies and a drive motor, wherein the line feeding area, the washing area, the drying area, the paint spraying area, the levelling area, the finishing coat drying area and the line discharging area are sequentially connected; the rail is fixedly arranged at the top of the entire agricultural equipment gearbox coating line; the coating assembly line chain is connected with the drive motor; the coating assembly line chain is connected with the rail; driven by the drive motor, the coating assembly line chain moves along the rail; the lifting appliance assemblies are fixed on the coating assembly line chain; and gearboxes are lifted through the lifting appliance assemblies at the line feeding area. The agricultural equipment gearbox coating line is reasonable in structure, light and convenient to operate, excellent in coating effect and high in paint adhesive force, and the agricultural equipment gearbox coating line and a coating method thereof can meet the using requirements.

The invention discloses a multifunctional vehicle special for grounding and tool placing. The multifunctional vehicle comprises a vehicle body. Wheels are disposed on two sides of the vehicle body. A winding device is disposed at the rear of the vehicle body. The winding device comprises a crisscross upper winding rack and a lower winding rack. The upper winding rack and the lower winding rack are connected through four winding rods. An object placing groove is formed below the middle position of the vehicle body. Warning bar placing grooves are formed in two sides of the front end of the vehicle body. Isolation strips are disposed in the warning bar placing grooves. A traction hook is disposed at the front end of the vehicle body. The multifunctional vehicle has the advantages that the problems that grounding wires easily intertwine and knot due to looseness during winding, winding is inconvenient and the grounding wires damage easily are solved, the vehicle has a grounding wire management function, safety of construction staff is guaranteed, other tools needed by construction can be placed reasonably and neatly, grounding wire construction speed is increased, and workload of the construction staff is reduced.

The invention discloses a seedling method and particularly relates to a rapid seedling method for fruit tree hybrid seeds. The rapid seedling method includes after the fruits are collected, removing pulps and taking out seeds without shells, placing the seeds in culture dishes, pouring sterile water with 20-25 degrees in the culture dishes, and soaking the seeds in the sterile water within 24-36hs; removing seed coats, sterilizing the seeds without coats with 0.08%-0.12% potassium permanganate solution for 24-36secs, and placing the seeds waking up from dormancy in the container filled with the sterile water for seeding; seeding the seeds waking up from the dormancy in watered matrixes for culture in a phytotron; after the seeds grow the fifth or the sixth leaves, removing the seeds out of the phytotron and culturing the same under the indoor temperature for 2-3 days for water controlling, and then transplanting the seeds to feeding blocks or fields to grow. By the application of the rapid seedling method, seed development period is shortened, and emergence rate of hybrid seeds is increased.

The invention provides a fire-fighting robot system and a method. The fire-fighting robot system comprises a rail, fire-fighting robots and a control center, wherein the rail is arranged at the top ofa protection area; at least one fire-fighting robot is movably operated on the rail; at least three layers of protection mechanisms are arranged at the end part of the rail; each fire-fighting robotcomprises a robot body and a control component; fire-fighting bullet components for jetting fire-fighting bullets are arranged on the corresponding robot bodies; image acquisition devices and detecting components for detecting environment parameters are arranged on the corresponding robot bodies; the control components receive the environment parameters acquired by the environment detecting components; and the control center receives the detection data uploaded by all the control components, judges whether a fire happens or not, determines a thermal radiation source according to the imaged information, further determines the ignition center area, and controls a plurality of fire-fighting robot bodies closest to the ignition center area to be moved to a part near the ignition center area tofight a fire, and fire fighting and safety control over the robots are realized.

The invention relates to a wave-force power generation method and a wave-force power generation device. For the method, the wave-force power generation device consists of a maritime part and a shore-based part, wherein the maritime part is a wave force machine of which rollers at the lower end of a machine frame runs on a rail of the machine frame, so that the wave force machine can be placed under the sea or onshore. A wave gathering cover of the wave force machine gathers wave energy in a suitable compression ratio, and sends the wave energy to a plurality of different energy gathering cylinders, according to the water yield of the control signal water drain openings of the energy gathering cylinders with the control function, wave heights control the running states of the energy gathering cylinders to enter or withdraw from a combined equivalent energy gathering cylinder so as to output mechanical energy, pneumatic energy and hydrodynamic energy which are output in a complementary and stable manner, and after being supercharged and stored, the mechanical energy, the pneumatic energy and the hydrodynamic energy are sent to the shore-based part under the control of a rotating speed testing and controlling device; namely the mechanical energy, the pneumatic energy and the hydrodynamic energy are sent to inlets of an air turbine and a water turbine in an ashore machine room through pipelines so as to drive the rotating speed and the torque of a transmission main shaft according to the size of the wave heights, and the rotating speed testing and controlling device is coupled with the transmission main shaft through a plurality of independent overrunning clutches arranged on generators so as to allocate the gathered energy of the wave gathering cover to be matched with a loaded power generation set. The wave-force power generation device disclosed by the invention is designed by the method.

The invention relates to unchoking equipment for an earthquake, in particular to a road surface obstacle removing device for an earthquake disaster. According to the unchoking equipment for the earthquake, obstacles can be rapidly removed, complete clearing is achieved, the consumed time is short, and meanwhile personal safety of a removing worker can be ensured. The unchoking equipment for the earthquake comprises a frame and the like, the left side and the right side of the frame are provided with connecting rods correspondingly, wheels are arranged on the connecting rods, and top of the frame is vertically connected with a fixing plate. A driving device is mounted on the fixing plate, a transmission device is mounted in the middle of the front side of the frame, and the bottom of the frame is provided with an obstacle removing device body. According to the unchoking equipment for the earthquake, through mutual cooperation of the driving device, the transmission device and the obstacle removing device body, the damaged road surface can be effectively cleared, and the effect that the obstacles can be rapidly removed, clearing is complete, the consumed time is short, and meanwhile the personal safety of the removing worker can be ensured are achieved.

The invention provides a substation fire-fighting continuous operation system and a method thereof. The system comprises a fire-fighting robot and fire-fighting medium supply equipment, wherein the fire-fighting medium supply equipment is provided with a water supply mechanism and a foam supply mechanism. A fire-fighting mode combining the fire-fighting robot with the fire-fighting medium supply equipment is provided, and continuous operation can be carried out. Meanwhile, spraying mediums and spraying angles can be switched according to fire situations, it is ensured that fire behaviors are controlled most rapidly, and guarantee is provided for reliable and safe operation of a substation.

The invention provides a multi-device software upgrading method and a multi-device software upgrading system, wherein the method comprises the following steps of: S1, accessing to an upgrading program on a management platform server through a terminal, querying a local database of the management platform server through the upgrading program, returning back a list of target devices for upgrading, selecting multiple to-be-upgraded target devices and upgrading types, and selecting the to-be-upgraded upgrading programs from the terminal; S2, building multiple HTTP (Hyper Text Transport Protocol) connections according to information of multiple target devices by the management platform server, and uploading the upgrading programs to the target devices from the terminal; and S3, executing upgrading program integrity check, and returning back a result to the terminal by agent programs of the target devices. The method provided by the invention can synchronously upgrade multiple devices in a network safely and quickly; and simultaneously, the technology can finish the upgrading work by only requiring the target devices to start HTTP ports, and is very important on guaranteeing own security of the devices in a complex network environment.

The invention provides a stamping device for metal base plate production. The stamping device comprises a mounting mechanism, two sets of clamping parts, a connecting part, a collecting part, a stamping part and a moving part; a lifting part is mounted at the top of the mounting mechanism; the two sets of clamping parts are symmetrically mounted at the top of the mounting mechanism, a lower mold is arranged between the two sets of clamping parts, and fixing parts are mounted in the two sets of clamping parts; the connecting part is mounted in the mounting mechanism; the stamping part is mounted on the lifting part; the collecting part is mounted at the bottom of the mounting mechanism; and the moving part is mounted on the right side of the lifting part. Two limiting blocks are slidably connected into two guide grooves, so that when two fixing columns are located in two fixing holes in the middle, the top of a storage box is tightly attached to the bottom of the lower mold, splashing of crushed materials after stamping is avoided, on the one hand, the sanitary environment of a working area is improved, and the cleaning time of workers is shortened; and on the other hand, the workers are prevented from being hurt by the splashed crushed materials.

The present invention discloses a power cable solar energy power supply practical training apparatus. The apparatus comprises a cabinet, an inlet cable, an outlet cable and poles. One side of the cabinet is connected with one end of the inlet cable. The other end of the inlet cable is provided with cable joints. The other side of the cabinet is connected with one end of the outlet cable. The other end of the outlet cable is provided with cable joints. The inlet cable and the outlet cable are fixed on the cabinet through the poles. The cabinet housing is made of insulating materials. The inner part of the cabinet is sequentially provided with a first support, a second support, a first drawer and a second drawer from top to bottom. The bottom of the cabinet housing is provided with a fire prevention cabinet with an open upper end. A fire extinguisher is arranged inside the fire prevention cabinet. The fire prevention cabinet is located on the rear part of the second drawer. The top of the cabinet outer part is provided with a solar panel. The high-safety power cable practical training apparatus has the characteristics of simple structure, convenient operation, energy conservation, consumption reduction and good safety performance.

The invention discloses an electric vehicle speed tampering prevention method, and belongs to the technical field of communications. The electric vehicle speed tampering prevention method includes the following steps that (1) sequence codes are downloaded and obtained through a mobile phone client-side; (2) the sequence codes are sent to an intelligent bi-directional alarm through mobile phone Bluetooth; (3) the intelligent bi-directional alarm judges whether the sequence codes are legal or not, and if the sequence codes are legal, and the sequence codes are sent to a controller; (4) the controller enables the received sequence codes to be stored in an ROM storage space and meanwhile sends the sequence codes to an internal chip of a motor; (5) when a vehicle is started, communication is conducted between the controller and the internal chip of the motor, if the sequence codes of the controller and the sequence codes of the internal chip of the motor are matched, the motor is started, and otherwise the motor is not started. According to the method, unique matching of the motor and the controller is achieved, the problem that an owner increases the speed of the vehicle arbitrarily is avoided, the probability that accidents happen due to the fact that the speed of the vehicle is too fast is lowered, the self-security of the owner is guaranteed, and meanwhile the fame of vehicle manufacturers is maintained.

The invention discloses an electricity-approaching early-warning system for mechanical vehicles. The system comprises an electric field signal sensing device (1) arranged on the outer side of a mechanical vehicle and used for detecting the change of an electric field; and an indicating and alarming device (2) arranged on the operating table of the mechanical vehicle and used for indicating and alarming purposes. The electric field signal sensing device (1) is connected with the indicating and alarming device (2) through a wireless signal. According to the technical scheme of the electricity-approaching early-warning system for mechanical vehicles, when a construction mechanical vehicle approaches a high-voltage power line, the photoelectric alarm is sent out. Therefore, the occurrence of the accidents of a high-voltage transmission line can be reduced or avoided.

The invention discloses a method for detecting the self safety of a polyurethane grouting reinforcement material for an underground coal mine in a use process. The detection method is characterized by comprising the following steps that the polyurethane grouting reinforcement material is solidified, the theoretical highest reaction temperature during solidification and the thermal decomposition temperature after solidification of the polyurethane grouting reinforcement material are measured, and then the two temperatures are compared to judge whether the polyurethane grouting reinforcement material is safe. According to the detection method disclosed by the invention, an existing thermoanalysis technique is utilized, and the theoretical highest reaction temperature during solidification and the thermal decomposition temperature after solidification of the polyurethane grouting reinforcement material are compared to judge whether the material smolders when being used for the underground coal mine. The detection method has the advantages of simplicity and rapidity, and can be used for judging the self safety of the polyurethane grouting reinforcement material in the use process accurately and effectively.

The invention discloses an impedance composite resonance magnetic motorcycle silencer. The impedance composite resonance magnetic motorcycle silencer comprises a mounting pipe, a U-shaped springback mechanism is fixedly connected to the left side of an inner cavity of the mounting pipe, a spiral fluid director is arranged in the middle of one side, close to an oil lubricating mechanism, of an inner cavity of a convection barrel, a rotary resonance mechanism is arranged at a position, located on one side, away from the oil lubricating mechanism, of the spiral fluid director, and a magnetic fanis arranged at the position, located on one side, away from the rotary resonance mechanism, of a magnetic packaging mechanism, of the inner cavity of the convection barrel. According to the impedancecomposite resonance magnetic motorcycle silencer, dredging tail gas is carried out through guiding and flow dividing, backflow of the tail gas is avoided; through thermal expansion spraying, lubricating and cleaning the silencer are carried out to certain extent, purifying the tail gas is carried out; external air suction and air convection are achieved, rotating force is provided, rotating the inner part of the impedance composite resonance magnetic motorcycle silencer is carried out to form non-directional vortexes, silencing and heat dissipation are completed, and the service life and the safety of the impedance composite resonance magnetic motorcycle silencer are ensured.

The invention relates to a fallproof safety device for an electric hoist. The device efficiently solves the problem that an electric hoist falls when the electric hoist is overweight. According to the technical scheme of solving the problem, the electric hoist includes a first electric motor that is connected with a first friction bevel pulley that is matched with a second friction bevel pulley that is inserted with a second driving rotating shaft, a first spring is arranged in the second friction bevel pulley and positioned at the front end of the second friction bevel pulley, the middle wall of the second friction bevel pulley is connected with the second driving rotation shaft in a screw joint mode; a first rotation shaft is fixed on a mounting plate and provided with a cross-shaped rotation plate that can rotate around the first rotation shaft, the left portion of the cross-shaped rotation plate is arranged with a reel in a sleeved mode and the reel is wound with steel wire rope.

The invention discloses a water quality online detection buoy station of a high-drop limit water level river, which belongs to the technical field of water quality detection. The buoy station comprises a buoy body, a probe well and a wing pendulum, wherein the major structure of the buoy body is a fully sealed hollow cylinder body; a water quality detection probe is arranged in the probe well; the probe well and the wing pendulum are the same in weight and are detachably fixed on the outer side of the cylinder body uniformly and symmetrically. In the buoy station, the wing pendulum is mounted below a water line on the side surface of the buoy body and is matched with the probe with the same weight, so that the buoy is kept to be balanced; by setting the amplitude of swing of the wing pendulum, the wing pendulum faces to the direction of water flow; when the wing pendulum is impacted by flood, the water flow and wind direction are dramatically changed, and the wing pendulum forms resistance under the influence of acting force and counter-acting force, so that the buoy body is prevented from being moved and rotated, therefore, the stability is enhanced, the balance and direction can be kept, and the problems that water quality detection equipment of a high-drop water body is high in technical requirements and is overturned easily in the prior art can be solved.

The invention relates to a combined strategy algorithm for channel inspection and refined inspection of unmanned aerial vehicle. Firstly, a target function and a mathematical model of an unmanned aerial vehicle target allocation task planning problem are analyzed by combining different emphasis points of unmanned aerial vehicle flight task planning; secondly, the optimization ability of the unmanned aerial vehicle target allocation problem is studied for the standard particle swarm algorithm, quantum behaviors are introduced to expand the particle search range, then a linear differential decline strategy is introduced into an expansion and contraction factor in the quantum particle swarm algorithm by reference to the inertia weight selection idea of the particle swarm algorithm, the global searching capability and the convergence speed are both improved, on the basis, a Gaussian learning strategy is introduced in an algorithm iteration process, and the population diversity is improved by utilizing the characteristic of Gaussian learning escape ability; then, single and multi-peak function testing and analysis are carried out on the standard particle swarm optimization, the quantum particle swarm optimization and the independent improved algorithm; and finally, a target allocation problem model of the unmanned aerial vehicle is solved by adopting an improved hybrid algorithm.

The invention provides a laser mixed gas preparation device which comprises a mounting mechanism, a mixing device is mounted at the top of the mounting mechanism, a driving mechanism is mounted in the mixing device, the mixing device comprises an outer pipe and an inner pipe, the inner pipe is fixedly mounted in the outer pipe, a plurality of gas inlets are formed in the peripheral side of the inner pipe, and a plurality of gas outlets are formed in the peripheral side of the inner pipe. A first air storage tank and a second air storage tank are connected to the outer pipe, a flow guiding device is installed in the inner pipe, two air inlet mechanisms are symmetrically installed on the flow guiding device, a plurality of sealing devices are installed between the outer pipe and the inner pipe, one end of a connecting device is connected with the outer pipe, and the other end of the connecting device is connected with a collecting device. And a fixing device is mounted in the connecting device. The mixing device, the driving mechanism and the flow guide device are combined, so that gas in the gas storage tank I and the gas storage tank II is premixed in the mixing device, the mixing quality is improved, and the mixing precision can be ensured.

The invention relates to the technical field of cleaning equipment, in particular to a link mechanism for window cleaning equipment. The link mechanism comprises a cross arm and a link parallel to each other. Both one end of the cross arm and one end of the link are connected to a connecting rack, and the other end of the cross arm and the other end of the link are connected to a column. A hydraulic cylinder is fixed to the column below the cross arm. A push rod of the hydraulic cylinder is fixedly connected to the cross arm. A first mount is fixed to the front end of the connecting rack. A slewing bearing unit is disposed at the top of the first mount. A second mount is fixedly connected to the upper surface of the slewing bearing unit through bolts. A dovetailed arm is fixed to the second mount. A motor is further fixed to the first mount. The output end of the motor is connected to the slewing bearing unit. Through the use of the link mechanism, when the window cleaning equipment operates, the dovetailed arm is kept horizontal constantly.

The invention discloses a police steel fork with self-locking, self-handcuffing and electric shock functions. The police steel fork comprises a tubular long handle, a first handcuffing ring, a second handcuffing ring, clamping teeth, a lock, a clamping groove, a handle, diagonal rods, a square pull rod, a rivet and cylindrical pins, wherein a high-performance battery and a switch are arranged at the tail end of the square pull rod; the first handcuffing ring, the second handcuffing ring, the diagonal rods, the square pull rod and the rivet are machined by conductive materials such as aluminum alloy; and engineering purpose-made plastics insulating material layers are arranged on the outer surface of the tubular long handle and the outer surface of the handle. According to the police steel fork with the self-locking, self-handcuffing and electric shock functions, the structure and principle of a police steel fork with self-locking and self-handcuffing functions are organically combined with those of a spontoon, safety of law enforcement officers can be ensured, and furthermore, the self-locking, self-handcuffing and electric shock functions are fulfilled, so that a scoundrel can be easily arrested and can be stopped from escaping. The police steel fork even can be used for easily arresting the scoundrel who is strong and extremely vicious.

The invention provides a bus shelter and assemblies and relates to the technical field of public facilities. The bus shelter comprises a shelter body, an air conditioner, a blind road, an anti-theft warning device and a power supply device, wherein the shelter body is of a closed structure, and an emergency door for people to come in and go out of the shelter body is arranged on a side wall of theshelter body; one side of the shelter body close to a lane is provided with an anti-collision column; the air conditioner, the anti-theft warning device and the blind road are arranged inside the shelter body, and both the air conditioner and the anti-theft warning device are electrically connected with the power supply device; the anti-theft warning device comprises a controller, a key and an alarm; the controller is separately connected with the key and the alarm; and when the key is pressed, the controller controls the alarm to be started. By arranging the air conditioner, the internal temperature of the shelter body can be adjusted, thereby providing a comfortable waiting environment for passengers in the shelter body, preventing the shelter body from being influenced by the ambient environment, and reducing the condition of sunstroke or frostbite of the passengers waiting for buses for a long time.

The invention relates to a shield tunneling formation loss simulation device and method for multi-compartment separated water capsule drainage. The device includes a model test soil box with an opening at the upper end, a horizontal model shield is arranged in the model test soil box, and the model test soil box outside the model shield is filled with formation soil; water capsules are arranged onthe outer wall of the model shield circumferentially in the longitudinal direction, and the water capsules are separated into a plurality of relatively independent compartments in the circumferentialdirection; and each water capsule compartment is provided with an independent drainage hose, one ends of the drainage hoses are connected to the water capsule compartments, the other ends of the drainage hoses are connected to measuring cups outside the model test soil box after penetrating through reserved holes of the model test soil box, and the formation loss is realized by controlling the displacement of the water capsules. The shield tunneling formation loss simulation device and method for multi-compartment separated water capsule drainage has the advantages of simple experimental device, diverse functions, low cost and simple and convenient process, provides a new idea and test method for studying the formation loss mechanism and displacement law of shield tunneling under variousworking conditions, and provides technical support for ensuring the safety of shield tunneling construction and the surrounding environment.

The invention discloses a carbon dioxide explosion suppressor. The carbon dioxide explosion suppressor comprises a nozzle, a gas ejector pipe, a quick opener and a carbon dioxide storage tank, all of which are sequentially connected. The gas ejector pipe and the quick opener are connected through a flange plate. When an explosive accident happens, the quick opener receives triggering signals and is rapidly opened, liquid carbon dioxide in the carbon dioxide storage tank is sprayed out through the gas ejector pipe and the nozzle, and an explosion suppressing protective screen is formed to suppress explosion flames. Carbon dioxide is adopted as an explosion suppression medium in an explosion suppressor system, the explosion suppressing performance is excellent, the reaction is rapid, and the explosion suppressing duration is long; and the carbon dioxide explosion suppressor has the beneficial effects of being clean, environment-friendly, good in safety and wide in application range.

The invention relates to the technical field of safety protection, and discloses a campus access control which cannot be crossed without a card. The bottom of the pedal is fixedly connected to the upper end of a plug; the lower end of the plug directly faces a clamping groove formed in the upper end of the base; the center of the lower end shaft of the plug is rotationally connected with the upperend of the movable rod through a fixed shaft C; the lower end of the movable rod is rotationally connected into a sliding groove formed in the rotary ball, a person passing through the door must passthrough the pedal when not passing through the door, the pedal is stressed to be pressed downwards, and the plug blocks a clamping groove formed in the upper end of the base and is pressed downwards,so that the movable rod directly pushes the rotary ball to move towards the right end in the base. When a user steps on the pedal without swiping a card, the pedal is blocked by the elastic stop block and cannot move upwards, and the baffle can be put down only by opening the sliding door, so that the defect that the pedal is bounced when the user without the card sits on the access control box after stepping on the pedal is overcome, and the safety of students and teachers is guaranteed to a certain extent.

The invention discloses circuit board surface punching equipment with an automatic die changing function. The circuit board surface punching equipment comprises a working table, wherein a punching assembly is arranged on the working table, and is jointly formed by a conveying unit and a punching unit which are mounted on the upper surface of the working table, and an automatic die changing mechanism is arranged on the punching unit. The circuit board surface punching equipment has the beneficial effect that after a PLC series controller is mounted at a hollow part of the device, automation can be fully realized, manual die changing can be omitted, and operation is convenient and rapid; and the production efficiency is greatly increased, and at the same time, the personal safety of operators is ensured.

A rescuer posture state controlling method used in match with a water surface rescue device is disclosed. The method includes automatic system activation, initialization and alarming, a first time ofposture correction, maintaining of a normal forward pushing state and posture control and pushing before rescue, normal in-water rescue state switching, near-distance in-water rescue and normal in-water rescue state maintaining, normal common return voyage state switching and posture control and pushing after rescue, and automatic system delayed turnoff. The method determines the state of a rescuer by utilizing rescuer postures, water pressure, a pressure difference and changing trends thereof. The device adopts a gravity center adjusting module, a counterweight adjusting module and an air inflation module to adjust gravity, floating force and the gravity center position according to a determination result. An implementing process of the method is simple. The method is economical, suitable, rapid in response, labor-saving and safe. The method can assist a rescuer to reach a rescue location in an efficient and labor-saving manner, and can ensure that the rescuer performs safe and reliable rescue operation under the premise of ensuring safety of the rescuer himself or herself.

The invention discloses a chemical mixing and supplying system of a coating machine. The chemical mixing and supplying system of the coating machine comprises a raw material cylinder which is communicated with a mixing cylinder through a first peristaltic pump, and the mixing cylinder is connected to a chemical supplying cylinder through a second peristaltic pump. The chemical mixing and supplying system of the coating machine has the advantages that firstly, labor cost is reduced, simple and reliable operation is achieved, and production efficiency is improved; secondly, matching with high precision is finished, cost is lowered, and waste of components under the condition of artificial matching is avoided; thirdly, the stability and reliability of the system are guaranteed as the system is configured with a film pressure sensor which can monitor the on / off state of circuit in any position of the system; fourthly, the system runs in a totally closed state, so that the environment and the personal safety of workers are protected to a great extent. The whole process is carried out in a fully automatic and totally closed state to prevent toxic gas and powder from entering in air, so that not only is the environment protected, but the personal safety of the workers is guaranteed. The automatic and environment-friendly chemical mixing and supplying system of the coating machine provided by the invention has the beneficial effects of high efficiency, high-precision matching and high percent of pass.