31results about How to "Reduce the risk of safety hazards" patented technology

The invention relates to the technical field of satellite fault diagnosis and fault-tolerant control, and proposes a fault diagnosis method, which has very good robustness to external interference, isfree of influence of external interference in a fault diagnosis process, prevents generation of misinformation and missing report, and can effectively estimate fault severity. According to the satellite fault diagnosis and fault-tolerant control method based on a self-adaptive observer, first a satellite kinematics and dynamics model under an actuator fault and external interference influence isestablished to analyze influence of fault effective factors on a system; secondly, an observer is designed for a satellite fault system, a residual error evaluation function is established based on observer output and system actual output, an evaluation threshold value is obtained, and the purpose of fault detection is achieved; then, when occurrence of a fault is detected, a self-adaptive observer is designed to complete a fault diagnosis task; and finally, based on an estimated value of the fault, a finite time self-adaptive fault-tolerant controller is designed. The satellite fault diagnosis and fault-tolerant control method based on a self-adaptive observer is mainly applied to fault diagnosis and fault-tolerant control occasions.

The invention discloses a method for recovering refined bismuth from noble lead. The method comprises the following steps: (1) vacuum distillation is carried out on the noble lead to prepare lead-bismuth alloy, and the lead-bismuth alloy comprises more than or equal to 70 wt% of Pb, 10 wt% -20 wt% of Bi and 4-12wt% of Sb; (2) the prepared lead-bismuth alloy is directly cast into a first bismuth anode plate, and then electrolysis or mixed electrolysis together with a main process of lead electrolysis is carried out in a silicon-fluorine acid system so as to obtain lead-out lead and bismuth-richanode mud; (3) reduction smelting is carried out on the bismuth-rich anode slime to obtain a crude bismuth alloy, and vacuum distillation is carried out on the crude bismuth alloy to prepare crude bismuth; and (4) the crude bismuth is directly cast into a second bismuth anode plate, then bismuth electrolysis is carried out in a silicofluoric acid system, and the separated bismuth obtained by thecathode is refined and melted to obtain the refined bismuth. According to the method, the lead-bismuth alloy is directly cast into the bismuth anode plate for electrolysis, so that the production period is greatly shortened, the comprehensive treatment cost is low, the economic benefit is remarkable, and the method belongs to a green and environment-friendly metallurgy process.

The invention provides a battery pack heating device which comprises battery cells, a supporting plate, PTC (positive temperature coefficient) heating columns and a heat conduction plate, wherein a plurality of rows of positioning holes are formed in the supporting plate; the battery cells and the PTC heating column are kept in the positioning holes; the battery cells are arranged in rows; the first row of the battery cells and the adjacent second row of battery cells are alternatively arranged; one PTC heating column is positioned at the leftmost end of the first row of the battery cells, the other PTC heating column is positioned at the rightmost end of the second row of the battery cells; the heat conduction plate is connected between the two PTC heating columns, and is waveform; the side surfaces of the first row of the battery cells are adhered to a position above the wave trough of the heat conduction plate; the side surfaces of the second row of the battery cells are adhered to a position below the wave crest of the heat conduction plate. The battery pack heating device has the advantages of good heating consistency and high safety.

The invention discloses a highway bridge slope maintenance unmanned aerial vehicle inspection method and system. The method comprises the following steps: acquiring inspection task data of an unmannedaerial vehicle; controlling an unmanned aerial vehicle to perform highway bridge slope inspection according to the inspection task data; receiving video data uploaded by an unmanned aerial vehicle, wherein the video data is a plurality of images collected by the unmanned aerial vehicle when the unmanned aerial vehicle executes the highway bridge slope inspection; and performing image analysis onthe video data to generate an inspection report which comprises an inspection part and a disease state corresponding to the inspection part. While the workload and the working danger coefficient of inspection personnel are reduced, the inspection position can be broadened to a certain extent, and the inspection frequency is increased, so that the risk of potential safety hazards of a bridge is reduced. The invention can be widely applied to the field of image processing.

The invention relates to a built-in tail board of a logistics truck. The built-in tail board comprises the built-in tail board arranged on the logistics truck, wherein the built-in tail board comprises a lifting device which is pivotally connected in a container, and a tail board connected to the lifting device; the lifting device comprises a lifting column pivotally connected in the container, and a lifting guide rail is arranged on the lifting column; and an embedded sliding rod is movably embedded in the lifting guide rail, and the end part of the embedded sliding rod is pivotally connected with the tail board. The invention discloses the built-in tail board of the logistics truck, the tail board can be arranged in the container, so that the qualification rate of annual inspection is reduced; and the safety performance of the tail board is improved, and the risk of potential safety hazards in the running process of the truck is effectively reduced.

A campus vehicle management optimization method based on a GIS (Geographic Information System) is provided. First, a vehicle database is generated according to the past vehicle access history. On onehand, a black list and a white list in the vehicle database are generated through big data processing. On the other hand, the database can be constantly updated in real time through the access of foreign vehicles. During the rush hour of school classes, the traffic condition of all roads in the campus is monitored in real time through the real-time road monitoring function of the GIS. If the ratioof congested roads to roads in good condition exceeds a certain threshold, foreign vehicles will be temporarily stopped from entering the campus, and vehicles will be released by judging whether thevehicles are in the database and the black list through the database. After a vehicle enters the campus and arrives at the destination, the real-time statistics of the parking lot information and remaining parking space information in the campus is made based on the GIS, and the information is fed back to the vehicle owner so that the vehicle owner can choose a parking lot to park the vehicle. Themethod of the invention can improve the traffic condition in campuses and reduce the potential risk to campus safety.

The invention discloses an acetylene production process operation control method and particularly relates to a displacement and charging operation process DCS control method. An emptying-displacement-charging-reaction process of an acetylene generator is controlled through a DCS, a displacement and charging process is changed into an automatic control mode, a nitrogen filling pressure A value is preset, an automatic replacement time T1 value is set, a time relay is newly added, the time T2 is set, operation starts to reach the A value, a replacement button starts to enter a replacement stage, the replacement time satisfies the T1 and the T2, a next program step is automatically carried out, if the nitrogen filling pressure is determined by the DCS to be smaller than the A value, the replacement time is T1+2 minutes and the T2+2 minutes, the T1+2 minutes and the T2+2 minutes are both satisfied, a next step is automatically carried out, the program is over, all internal switches and valve positions are reset to initial states, a reaction stage is finally entered, and ideal control standards can be realized through the previous operations. The method is further advantaged in that operation is convenient and rapid, influence of artificial factors can be solved, and automatic control and precision for the key acetylene production process are realized.

The invention relates to the technical field of new energy vehicles, and a heat dissipation device of a new energy automobile charging pile power supply. The heat dissipation device comprises a heat dissipation base and a water cooling device arranged on one side of the heat dissipation base, the heat dissipation base is provided with a cooling cavity and an electronic element containing cavity. Aheat dissipation element is arranged in the cooling cavity, the water cooling device comprises a heat dissipation water row communicated with the cooling cavity and a water pump used for circularly pumping cooling liquid between the cooling cavity and the heat dissipation water row, and an upper heat absorption plate and a lower heat absorption plate are arranged on the top face and the bottom face of the cooling cavity respectively in a sealed mode. In the present invention, the upper heat absorption plate and the lower heat absorption plate can quickly transfer heat of the power supply component to the heat dissipation base; the cooling liquid cooled by the heat dissipation water row enters the cooling cavity, absorbs heat on the heat dissipation base, becomes hot water and enters the heat dissipation water row again to be cooled, the cooled water enters the cooling cavity again to absorb heat, heat exchange of the heat dissipation base is completed through circulation, rapid heat dissipation of power supply components is achieved, and the service life of the power supply is prolonged.

The invention discloses a labor-saving door opener with a hovering function. The labor-saving door opener with the hovering function comprises a door, a main box body, a labor-saving mechanism located on the upper side in the main box body, a detection mechanism located on the lower side in the main box body and a door handle fixed to the front end face and the rear end face of the door, and the labor-saving mechanism comprises a rotating push plate and a rotating shaft fixedly connected into the rotating push plate; and the detection mechanism comprises a rotating block and steering switches located on the lower side of the rotating block and arranged in a bilateral symmetry mode. The labor-saving door opener has the advantages that the rotation resistance of the door is reduced through the elastic force of a labor-saving spring so that people can more easily and effortlessly push and pull the door on the inner side and the outer side, meanwhile, the sudden stop state of the door in the rotation process is detected through the detection mechanism, the reset force of a floor spring is reduced when the door is suddenly stopped in the rotation process, therefore the door is in a hovering state, it is convenient for a person to carry large items to easily pass, and meanwhile, the risk of potential safety hazards caused by the fact that children play in a door slot and are clamped when the door is closed is reduced.

The invention provides an ultra-thin electrode tab welding method. An MOPA laser with a preset set of parameter values is adopted to weld ultra-thin electrode tabs which are led out from multiple layers of battery cells and have the thickness of being smaller than 0.2mm, so that the multiple layers of ultra-thin electrode tabs are connected. Due to the fact that the single-point power of the MOPA laser is high, the welding speed can be increased; and due to the fact that the Q pulse width of the MOPA laser is in a nanometer level, the time of a laser point for staying in a welding area can be shorter, then the temperature of the welding area in the welding process can be reduced, the temperature requirement can be met, the situation that the phenomenon of welding point failure and the phenomenon of insufficient welding cannot appear when the multiple layers of ultra-thin electrode tabs are subjected to penetration welding can be guaranteed, the smoothness of a welding line is ensured, the risk of generating potential safety hazards is reduced, and the battery safety is improved. In addition, due to the selection of the preset set of parameter values, the welding result can meet the tension requirement.

The invention discloses an electric vehicle voltage converting circuit and is aimed at providing the electric vehicle voltage converting circuit capable of automatically controlling electric power transmission of a power source and reducing electricity waste. Key points of a technical solution of the electric vehicle voltage converting circuit are that the electric vehicle voltage converting circuit comprises a storage battery, a voltage converter and a head lamp that are orderly connected; the electric vehicle voltage converting circuit is characterized in that the voltage converter comprises an input end VIN, a first MOS transistor, a second MOS transistor, an electric inductor, an output end VOUT and a PWM output module; the PWM output module comprises an HO lead pin, an SW lead pin, an LO lead pin and a CS lead pin; the HO lead pin is connected with a grid electrode of the first MOS transistor, and the LO lead pin is connected with a grid electrode of the second MOS transistor; the SW lead pin is connected with a source electrode of the first MOS transistor, a drain electrode of the second MOS transistor and one end of the inductor; a drain electrode of the first MOS transistor is connected with the input end VIN, a source electrode of the second MOS transistor is connected with the CS lead pin and a grounding end, the other end of the inductor is connected with the output end VOUT, the output end VOUT is also connected with an optical switch module, the optical switch module is coupled to a position between the head lamp and the output end VOUT, and on-off of the head lamp can be controlled according to ambient light rays.

The invention provides a household electrical appliance and a control device and method thereof, relates to the technical field of automatic adjustment of display and prompt, and solves the problem ofhigh risk caused by that the elder at home needs to adjust the display brightness of a display screen and / or the volume of a prompt tone manually when a water heater is used. The device comprises a main control board, and at least two sensors and a user experience module connected to the main control board; the sensors detect environment parameters including illumination intensity, sound intensity, water flow and time; the main control board receives the environment parameters from the sensors, generates a control instruction according to the corresponding weight of the environment parameters, and drives the user experience module to run in the state corresponding to the control instruction. The method and device are applied to manufacture of the household electrical appliances.

The invention discloses a tire foreign matter removing method, an electronic control unit, a device, a terminal and a vehicle. The method comprises the steps that a foreign matter removing instructionsent by a terminal is received, and the foreign matter removing instruction and current driving state information of a vehicle are sent to a preset intelligent cleaning function device so that the preset intelligent cleaning function device can remove foreign matters from tires of the vehicle based on the foreign matter removing instruction and the current driving state information. The method can achieve the intelligentization of the foreign matter removal of the vehicle tires, improves the user experience, reduces the risk that the vehicle has a potential safety hazard, and promotes the intelligent development of the vehicle.

The invention provides a variable cross-section space angle steel component assembling precision control method and system. The method comprises the following steps of detecting a jig frame platform, marking out the jig frame platform, installing the system on the jig frame platform, finely adjusting the system, performing secondary fine adjustment on the system after a steel tower component is in place, assembling segments, disassembling the system and reusing the system. The problems that an existing segment manufacturing method and tool are low in efficiency, large in material consumption, large in damage, low in universality, large in man-machine consumption for disassembly and assembly and potential safety hazards exist are solved. The system is accurate in precision control, wide in application range, high in repeated utilization rate, convenient to operate and good in safety; the method can be used for assembling and precision control of various variable cross-section space angle steel members, the manufacturing precision is guaranteed, meanwhile, the production efficiency is improved by two times, the tool cost is reduced by 50%, and cost reduction and efficiency improvement are remarkable; positioning, assembling and adjusting are convenient and fast; labor and machinery can be saved in each link, and construction tasks can be efficiently completed.

The invention discloses cargo loading and unloading equipment for automobile freight. The cargo loading and unloading equipment comprises a supporting plate, a first vertical plate is arranged on one side of the top surface of the supporting plate, a first top plate is arranged on the surface of one side of the first vertical plate, a bearing seat is arranged on the bottom surface of the first top plate, and a threaded rod is rotationally connected into the bearing seat; and a motor is mounted on one side of the bottom surface of the supporting plate. A motor drives a threaded rod to rotate, a movable sleeve on the threaded rod moves on the threaded rod, a sliding block moves on a sliding rod along with the movable sleeve while the movable sleeve moves on the threaded rod, the height of a protection box between the movable sleeve and the sliding block can be effectively adjusted, and after adjustment is completed, a fixing plate is driven by a hydraulic cylinder to move, and a bearing plate above the fixing plate synchronously moves along with the fixing plate while the fixing plate moves, so that goods are conveniently loaded and unloaded, the limitation during use is reduced, and the application range of the equipment is enlarged.

The invention relates to an optimal inspection path determination method and device, a medium and equipment. The method comprises the steps that under the condition that multiple inspection paths exist between current equipment and terminal equipment, according to real-time detection data of the current equipment, influence factors corresponding to the current equipment under each inspection path are determined, and the influence factors are used for representing the influence degree of the current equipment on other equipment under the corresponding inspection path; and determining an optimal inspection path between the current equipment and the terminal equipment according to the influence factor corresponding to the current equipment under each inspection path. Therefore, when the optimal routing inspection path is determined, in combination with the influence of each device on the path on other devices under the path, the rationality of optimal routing inspection path planning can be improved, the routing inspection efficiency can be improved, the optimal routing inspection path can be matched with the operation state of the device on the path, the device routing inspection process is optimized, and the routing inspection efficiency is improved. The potential safety hazard risk in the equipment operation process is reduced to a certain extent.

The invention discloses a concrete pouring conveyor in a narrow and small roof sealing space at a high altitude. The concrete pouring conveyor comprises a cubic tank, a funnel-shaped container and a long hollow pipe, wherein the top and one side surface of the cubic tank are open, a round opening is formed at one end of the funnel-shaped container, a square opening is formed at the other end, thesquare opening end of the funnel-shaped container is connected with the opening on the side surface of the cubic tank, the round opening end of the funnel-shaped container is connected with one end ofthe long hollow pipe, a semi-circular seam is arranged in the position close to the free end of the long hollow pipe, and a movable valve plate is inlaid in the semi-circular seam. The invention further discloses a construction method of the concrete pouring conveyor in the narrow and small roof sealing space at the high altitude. The concrete pouring conveyor in the narrow and small roof sealingspace at the high altitude and the construction method have the advantages of simple construction, easy-to-control delivery amount, high efficiency, no waste, low cost, wide applicable range and lowpotential safety hazard risk, and pouring coverage is free of blind zone.

The invention provides a leakage detecting device and a leakage detecting system for a battery module. The battery module comprises a heat management assembly; the heat management assembly is provided with a first cavity which is used for accommodating a temperature control material; a gap is reserved between the leakage detecting device and the bottom of the heat management assembly. The leakage detecting device is provided with a leakage detecting assembly which is used for accommodating a conductive material; two ends of the leakage detecting device are connected with an external power supply; the external power supply and the conductive material in the leakage detecting assembly form an electric loop. When the heat management assembly leaks, the temperature control material enters the leakage detecting assembly accommodated with the conductive material along a side wall and the gap, and the electric loop formed by the external power supply and the conductive material in the leakage detecting assembly is disconnected so as to detect the leakage of the temperature control material in the heat management assembly. Therefore, the risk of existence of potential safety hazard is reduced; fateful and irreparable loss is avoided.

The embodiment of the invention relates to the technical field of Internet, and discloses a link library file encryption method and device, computing equipment and a computer storage medium, and the method comprises the steps: obtaining a virtual byte code set corresponding to a target link library file; determining a function needing to be encrypted in the target link library file to obtain a target function; randomly selecting a virtual byte code as a virtual instruction corresponding to the target function from the virtual byte code set through a random function so as to obtain a virtual instruction mapping table; and replacing the target function with the virtual instruction in the virtual instruction mapping table so as to encrypt the target function. Through the above mode, the embodiment of the invention realizes reliable encryption of the link library file.

The invention discloses an internet of things (IOT) deviation sensor device used for belt deviation detection and mainly relates to the technical field of supporting detection devices arranged on beltconveyor intelligent detection equipment. The device comprises a two-stage deviation switch, a sealing equipment bin is arranged on the two-stage deviation switch, a connecting component is arrangedon the outer wall of the sealing equipment bin, a vertical stick is arranged at the top end of the connecting component, a uniaxial tilt sensor is mounted on the connecting component, a level and electric voltage converter is mounted in the sealing equipment bin, and an IOT WIFI development board is mounted on the side surface of the interior of the sealing equipment bin. According to the IOT deviation sensor device provided by the invention, the belt deviation state can be directly monitored remotely, and potential safety hazards are prevented from being neglected; and in addition, compared with a two-stage deviation sensor that can only obtain two deviation states, the new device can be used for obtaining more precise deviation states, and predicative analysis can be made easily according to dynamic data acquired for a long time.

The invention provides a leakage detection device and a cell management system. The leakage detection device is applied to a cell module, and comprises a temperature control assembly and a leakage detection piece used for detecting leakage conditions of the temperature control assembly. The leakage detection piece is fixedly connected with the temperature control assembly and is arranged in an easily leaking place of the temperature control assembly. When a leakage occurs in the temperature control assembly, the leakage detection piece is damaged and breaks along with the easily leaking place. By detecting the breaking states of the leakage detection piece, detection of leakage conditions of the temperature control assembly is achieved. Thus, the leakage conditions of the temperature control assembly can be timely detected, hidden safety hazards are reduced and serious loss is avoided.

The invention discloses an automobile charging seat. The automobile charging seat comprises a shell, as well as an insulating clamping plate, a plugged tube and a conductive terminal arranged in the shell, wherein the insulating clamping plate is provided with an insertion hole with a circular arc surface; the insertion hole runs through upper and lower sides of the insulating clamping plate alongthe axis direction of the circular arc surface; the insulating clamping plate is also provided with a gap running through a side wall of the insertion hole in order to communicate inner and outer sides of the insertion hole; the gaps are used for arranging the plugged tube into the insertion hole; the axial length of the plugged tube is larger than the thickness of the insulating clamping plate,so that the plugged tube protrudes from upper and lower sides of the insulating clamping plate after mounting; the plugged tube is provided with a peripheral surface matching the circular arc surface;the plugged tube is also provided with an opening running through the side wall of the plugged tube to communicate inner and outer sides of the plugged tube; and the opening direction of the openingcorresponds to the opening direction of the gap, so that a conductive component can be loaded into the plugged tube from the opening. The automobile charging seat has the advantages of simple structure, convenience in assembly, and safety and reliability in use. On the other hand, the invention also provides an automobile.

The invention discloses a device for using pipeline gas as carrier gas of a chemical analysis instrument. The device uses gas of a pipeline gas source with purity meeting carrier gas requirements as the carrier gas of the chemical analysis instrument, and comprises a pipeline carrier gas feeding pipe which is led from the pipeline serving as the carrier gas source, wherein the pipeline carrier gas feeding pipe is connected with a purification device of the chemical analysis instrument. An existing bottled carrier gas feeding pipe can also be connected with the pipeline carrier gas feeding pipe in parallel and then connected with the purification device of the chemical analysis instrument. According to the device, existing resources are utilized, chemical analysis cost is reduced, operation safety and stability are improved, and utilization efficiency is high.