55results about How to "Guarantee smooth implementation" patented technology

The invention provides a river channel dredging operation method, system and equipment and a storage medium, and relates to the technical field of engineering. The method comprises the following steps: acquiring geographical, meteorological and hydrological and silt data of a to-be-dredged river reach and upstream and downstream river reaches, and constructing a full-basin hydrodynamics-silt mathematical model; then, a preliminary dredging scheme is prepared according to operation river reach data, the preliminary dredging scheme is input into the mathematical model for dredging simulation, and the dredging effect and the influence on the downstream river reach are evaluated; and finally, the preliminary scheme is corrected according to the evaluation result, a target dredging operation scheme is obtained, and dredging is carried out. Through the method, the dredging effect and the environmental influence can be more accurately controlled.

The invention discloses a coal power multi-path transformation and new energy combination decision-making method under low-carbon transformation. The method comprises the following steps: firstly, constructing a system comprising first-level effect indexes such as environmental influence, economic benefit, energy safety and technical innovation and corresponding second-level indexes; then, alternative schemes of various coal power transformation technology and new energy project type combinations are generated; then quantitatively evaluating the effect index of each scheme, and calculating a comprehensive utility value by using multi-criterion decision analysis; identifying potential risk factors, and performing uncertainty analysis through Monte Carlo simulation; and finally, according to the low-carbon transformation target and policy evaluation scheme conformity, selecting a scheme which most conforms to the policy target, and continuously monitoring and adjusting. The coal-electricity multi-path transformation and new energy combination decision-making method under low-carbon transformation is beneficial to promoting energy low-carbon transformation, optimizing resource allocation, improving economic benefits, promoting technical innovation, enhancing risk management capability and ensuring that a project is consistent with policy orientation.

The invention belongs to the technical field of dredging ship operation sea wave monitoring, and discloses an engineering scale sea wave monitoring system and method based on image information recognition. Comprising the steps of monitoring area setting, sea wave image acquisition, sea wave parameter analysis, crushing condition monitoring, surge condition monitoring and dangerous condition identification. According to the method, the sea wave danger evaluation condition, the sea wave breakage danger evaluation condition and the sea wave surge danger evaluation condition of each monitoring area are analyzed respectively, whether the sea wave danger condition occurs in each monitoring area or not is comprehensively judged, and then whether the target dredging engineering ship is in danger or not is further judged; omnibearing risk control over dredging ship operation is achieved, the risks of ship collision, overturning and facility damage are effectively reduced, accurate decision making is assisted, a reliable basis is provided for dredging operation route optimization arrangement and the like, the probability that a ship breaks into a dangerous sea area is reduced, smooth implementation of a navigation plan is ensured, and engineering tasks are completed on time.

The invention provides a new-generation information technology and landscaping supply chain fusion system, and belongs to the technical field of information technology and landscaping supply chain fusion. Landscaping supply chain management and data acquisition are improved in multiple aspects, data of each link are accurately acquired through multiple sensors and interfaces, manual recording errors are avoided, and the system is convenient to use. According to data analysis and processing, advanced technologies are utilized to predict growth trends and market demands, inventory management is optimized, an intelligent decision support module provides scientific purchase suggestions based on data results, an information interaction platform promotes information sharing and cooperation of all parties, and a visual monitoring module can find and process abnormities in time. The expandability and security of the system and the application of the mobile terminal adapt to development requirements, data privacy is protected, business processing is facilitated, the management efficiency and quality are integrally improved, and smooth implementation of a project is guaranteed.

The invention discloses an emotion recognition method and system for a teaching assistant robot, and relates to the technical field of emotion recognition, and the method comprises the steps: constraining the frequency of data collection, and summarizing the obtained data to generate a multi-modal emotion data set; labeling the data in the multi-modal emotion data set, and preprocessing the labeled multi-modal emotion data; the multi-modal emotion data collected in real time is used as input, the trained emotion recognition classification model outputs a corresponding recognition result, and a corresponding response strategy is matched for the teaching assistant robot according to the recognition result; and after the teaching assisting robot makes a response, an improvement coefficient is constructed according to feedback data changes in the observation period, and if the improvement coefficient does not exceed an improvement threshold value, a response strategy is optimized and adjusted. Response can be made quickly, and the teaching quality is improved; the response strategy is predicted by constructing a teaching feedback prediction model, and the effectiveness of the response strategy can also be ensured.

The laboratory equipment informatization management system is provided with experimental equipment, a middle-layer monitoring unit and an upper-layer online management unit, the middle-layer monitoring unit accesses a serial port of the experimental equipment through a switch, collects state data of the experimental equipment, collects environment data of an environment where the experimental equipment is located, and sends the state data to the upper-layer online management unit; collecting image data of a space where the experimental equipment is located; according to a parameter setting instruction and a start-stop instruction of the upper-layer online management unit, working parameters and start or stop operation of the experimental equipment are controlled; the upper-layer online management unit communicates with the middle-layer monitoring unit through a Modbus TCP / IP communication protocol, then collects state data, environment data and image data collected by the middle-layer monitoring unit, and sends set parameters and start-stop instructions to the middle-layer monitoring unit. The system can be compatible with communication and management of experimental equipment of different types and brands, and can also automatically collect and record state data of the experimental equipment.

The invention discloses a coronary intervention guide wire fixing patch and a using method thereof, and relates to the technical field of medical instruments.The coronary intervention guide wire fixing patch comprises a patch body, a bonding layer is arranged on the bottom face of the patch body, at least two clamping grooves used for clamping the tail end of a guide wire are formed in the top face of the patch body, and a plurality of protruding blocks are integrally formed on the top face of the patch body; each clamping groove is of a penetrating type groove structure formed in the top of the corresponding protruding block, the width of an opening of each clamping groove is smaller than the outer diameter of a guide wire, and the number of the protruding blocks is generally four and the protruding blocks are arranged at intervals in the length direction of the patch body. The patch body and the protruding blocks are made of medical plastic in an integrated mode, and the adhesive layer is further covered with a stripping protection layer. The device is simple in structure, small in size and capable of achieving rapid, single-hand and reliable fixing and releasing of the tail end of the guide wire on the premise that extra table top space is not occupied, so that the operation process is effectively simplified, and winding and disengaging of the guide wire are prevented.

The utility model discloses a packer packing cup rubber sleeve and a packer, and relates to the technical field of oil field equipment, the packer comprises the packing cup rubber sleeve, the packing cup rubber sleeve comprises a rubber sleeve with the upper end diameter larger than the lower end diameter, the packing cup rubber sleeve further comprises a framework embedded in the side wall of the rubber sleeve, the framework is of a laminated structure, and the rubber sleeve and the framework are arranged in the rubber sleeve. The number of layers of the framework is larger than or equal to 2, and the layers forming the framework are stacked in the radial direction of the rubber cylinder. The structural design adopted by the slip rubber sleeve in the scheme has the characteristic that the slip rubber sleeve can be conveniently subjected to casing milling.

The utility model discloses a multi-seat assembled bean table which comprises a table board, the table board is arranged in a right-angle fan shape, a storage box is clamped in the rear side of the upper end of the table board, two side telescopic sleeves are fixedly connected to the front side of the lower end of the table board, a center telescopic sleeve is fixedly connected to the center of the lower end of the table board, and the center telescopic sleeve is fixedly connected to the rear side of the table board. The side telescopic sleeves and the center telescopic sleeve are connected through side sliding blocks and side connecting rods, and the side telescopic function is achieved. By means of the design, the table can be easily expanded or contracted according to needs so as to adapt to different use scenes. Through the magnetic force of the side magnets, a plurality of tables can be mutually connected, and a user can conveniently combine the tables according to requirements. The modular connection system not only improves the use flexibility of the table, but also reduces the storage and transportation cost, and the design of the whole table considers the operation convenience and maintenance requirements of a user. The connection mode of all the components is simple and easy to understand, and a user can assemble and disassemble the components conveniently.

The invention discloses a pile-breaking-free mechanical connection method between a reinforced concrete square pile and a bearing platform, and the connection method comprises the following steps: manufacturing a steel reinforcement framework, connecting the steel reinforcement framework with a pile top end plate through a steel sleeve, and then pouring a concrete pile body to form the reinforced concrete square pile; the reinforced concrete square pile is subjected to pile sinking construction; and the pile top end plate is dismantled, and the bearing platform anchoring rib and the reinforced concrete square pile are mechanically connected through the steel sleeve. According to the pile-breaking-free mechanical connection method between the reinforced concrete square pile and the bearing platform, mechanical connection between the reinforced concrete square pile and the bearing platform can be achieved without mechanical breaking of the pile head of the reinforced concrete square pile, field welding work is avoided, construction is convenient and fast, and the method is more economical and reasonable.

The invention relates to a secure channel establishment method and system, a storage medium and an intelligent terminal, and relates to the field of building construction safety, and the method comprises the steps: obtaining a target building drawing and a site drawing; receiving a manually input simple channel planning line; decomposing the simple channel planning line according to a preset segmentation model length to obtain simple channel planning line segments; analyzing the target building drawing to obtain a building model; determining influence conditions based on the building model and the simple channel planning line segments; determining environment conditions based on the simple channel planning line segments and the site drawings; searching a corresponding assembly type model from a preset model database based on the influence condition and the environment condition; all the assembly type models are combined to obtain the simulated security channel, and the simulated security channel is output, and the method has the effect that a system can automatically output a visual simulated security channel scheme without high experience of a user.

The utility model relates to the technical field of textile machinery manufacturing, in particular to a weft yarn cutting device which comprises a cutting executing mechanism, a force transmission connecting rod mechanism and a cam mechanism. The cam mechanism is directly driven by the beating-up power transmission shaft, and power is transmitted to the cutting executing mechanism through the force transmission connecting rod mechanism. Therefore, on one hand, the reed for beating-up and the weft cutting device for cutting weft are jointly driven by the same power source, and it can be effectively guaranteed that the beating-up action and the weft cutting action are always kept synchronous in the whole weaving process; and on the other hand, in view of the characteristics of the cam mechanism, the non-constant-speed motion and the transient stay action with a large speed change range can be conveniently and quickly realized, so that the cutting execution mechanism can execute the cutting action according to an expected track.

The utility model discloses an ultrasonic pneumatic clamping mechanism which comprises a station disc, a plurality of supporting shafts are arranged at the top end of the station disc, the ultrasonic pneumatic clamping mechanism further comprises a clamping jaw mechanism, and the outer walls of the supporting shafts are sleeved with the clamping jaw mechanism. The clamping piece is arranged at the end, located at the center position, of the clamping jaw mechanism; and the driving mechanism is arranged on one side of the station disc, and the output end of the driving mechanism is connected to the control end of the clamping jaw mechanism. The clamping jaw mechanism is convenient to operate and control through the arrangement of the driving mechanism, the clamping jaw mechanism can be coarsely adjusted firstly through the arrangement of the rocker arm structure, then the air cylinder is used for fine adjustment after the coarse adjustment is completed, and through the matching of the adjusting arrangement, the clamping jaw mechanism can be accurately adjusted through the cooperation of two clamping operations in the workpiece clamping process. And the fine adjustment is controlled by the air cylinder, so that the operation of the clamping force is more uniform.

The invention discloses an engineering digital management platform based on a BIM model and a management method thereof, and relates to the technical field of engineering project management, and the method comprises the following steps: constructing a BIM model of an engineering project, and importing a document related to the project; constructing an intelligent archive management strategy, performing semantic analysis on the imported project document, automatically extracting key information, and binding the information with related components in the BIM model; constructing an immersive construction scene by using virtual reality VR and augmented reality AR technologies; continuously performing semantic analysis on the new document, and automatically updating related information in the BIM model; once potential disaster risks are detected, a corresponding emergency response scheme is automatically generated according to design specifications and document information in the BIM model. Through semantic analysis and natural language processing technologies, document key information is automatically extracted and intelligently bound with the BIM model, and automation and precision of information management are achieved.

The utility model discloses a movable LED display screen, and relates to the technical field of display screens. The LED display screen comprises a box body, two LED display screen bodies are arranged in the box body, a bottom plate is arranged at the lower end of the box body, self-locking universal wheels are fixedly connected to the four corners of the bottom plate, and a user can move the display screen conveniently. According to the LED display screen, the arranged second bevel gear drives the first bevel gear to rotate so that the lead screw can rotate, the LED display screen body can be lifted up and retracted through the supporting plate arranged in a threaded and sleeved mode, the LED display screen body can be prevented from being collided when retracted, and the service life of the LED display screen body can be prolonged; meanwhile, equipment can be effectively protected from being damaged by dust, moisture, collision and the like, the LED display screen can be conveniently moved by arranging self-locking universal wheels, the flexibility of the LED display screen is improved, and the LED display screen can meet the requirements of various activities and activity sites.

The present invention discloses a device for reducing frictional resistance in small-bore continuous tubing drilling and a method for using the device, and belongs to the technical field of petroleum drilling. The device includes a hydraulic oscillator and a free-limiting spiral ball straightener; the hydraulic oscillator is arranged at the lower part of the hand-dropping tool; the free-limiting spiral ball straightener is arranged at intervals in the inclined well section, including a straightener body and a free-limiting fixing device coaxially arranged at both ends of the straightener body, the axial ends of the straightener body are inner cone structures, and the connecting end of the free-limiting fixing device is an outer cone structure, and the two are plug-fitted, and the straightener body and the free-limiting fixing device are both provided with a center hole for accommodating the continuous tubing to pass through. The present invention utilizes a hydraulic oscillator and a free-limiting spiral ball straightener to solve the problems of difficulty in carrying sand, large frictional resistance, and severe blocking in continuous tubing drilling operations.

The present invention relates to the field of on-site preparation, transportation or processing of building materials or building components, and specifically to a method for sliding a roof grid steel structure in a large garbage pool. A method for sliding a roof grid steel structure in a large garbage pool is characterized by: performing the following steps in sequence: step 1, segmentation; step 2, assembling a bracket; step 3, erecting a column; step 4, hoisting; step 5, traction; step 6, fixing; step 7, repeating. The present invention has high installation accuracy and high construction efficiency.

The application discloses a kind of auxiliary devices and methods for incremental launching construction of through steel truss arch bridge, and the auxiliary device includes two steel cushion beams between the walking jack on the top of two rows of multiple temporary piers and the two steel longitudinal beams with inverted V-shaped longitudinal slope with high middle and low ends in length direction, the top plane of each steel cushion beam is parallel to the bottom plane, multiple groups of steel cushion block assemblies are fixed on the top plane of each steel cushion beam, the top surface of each steel cushion block is consistent with the slope of the bottom inclined surface of each steel longitudinal beam at its length position and mutually adheres;The length of each steel cushion beam is shorter than the length of each steel longitudinal beam, and the steel guide beam at both ends of each steel cushion beam is an integral whole, and the steel guide beam at both ends of each steel cushion beam is cut off after the incremental launching of through steel truss arch bridge. The incremental launching construction process using the auxiliary device will not damage the main steel beam of the bridge, only normal reinforcement structure and support structure are needed for the connection of steel guide beam, and steel material is relatively saved.

The invention, which relates to the technical field of human resource training, discloses a service system and method for external-assistance human resource training. External-assistance personnel of each training course are screened out according to each training course required by each target region; the environment safety of each target region and the necessity and cost of offline training of each training course in each target region are evaluated, the training mode of each target region is analyzed, and external assistance personnel with targeted professional ability and experience are selected for different rescued regions; the professional performance and the implementation effect of an external assistance human resource training project are improved, the training effect and the working efficiency are ensured, the professional image of external assistance work can be shaped, cooperation with a rescued area is promoted, meanwhile, the safety and the cost of training are predicted, then the training mode of each target area is selected, and the training efficiency is improved. The safety of the outside-assistance personnel is effectively guaranteed, the cost of the outside-assistance human resource training project is controlled, and smooth implementation of the outside-assistance human resource training project is guaranteed.

The invention belongs to the technical field of spaceflight, and discloses a pressing and releasing device and satellite equipment. The pressing and releasing device comprises a fusing module, a supporting module and a rope ring, the fusing module comprises a first connecting piece and a fusing piece, and the first connecting piece comprises two first rope winding parts and two rope penetrating holes; the supporting module comprises a support and two second connecting pieces connected with the support, and the two second connecting pieces correspond to the two rope penetrating holes in a one-to-one mode. The rope ring abuts against the fusing piece, in the direction close to the support, one end of the rope ring penetrates through one rope penetrating hole in the direction close to the support, is connected with the corresponding second connecting piece in a winding mode and is fixedly connected with one first rope winding part in a hanging mode, and the other end of the rope ring penetrates through the other rope penetrating hole in the direction close to the support. And the corresponding second connecting piece is wound and fixed with the other first rope winding part in a hanging manner. The device solves the problems that the compression function is easy to lose efficacy under complex working conditions due to insufficient compression force of the rope ring, and the load compression and unfolding reliability of spacecrafts such as satellite equipment is influenced.

The invention provides application of p-hydroxycinnamic acid in preparation of a medicine for preventing and treating noise-induced deafness. The invention has the advantages that the p-hydroxycinnamic acid has the advantages of strong pertinence, high safety, convenience in medication, good patient compliance and the like, not only effectively overcomes the defects of the existing noise-induced hearing loss treatment medicines, but also provides a brand-new preventive treatment thought; important clinical popularization significance and industrial application prospects are realized.

The invention relates to an enterprise production and manufacturing management system, which comprises a system management module, a resource management module, a plan management module, a library checking management module and a query and printing module, and is characterized in that the system management module is used for user authority management including user data addition, deletion and modification and corresponding authority; the resource management module is used for adding, deleting and storing resources; the production plan management module is used for managing and generating a production plan, a workshop operation plan, a workshop production progress plan, a raw material demand plan and a part demand plan and adding, deleting and storing the plans; according to the invention, the time required by planning can be shortened, and the current inventory information can be provided for the planning personnel and the warehouse administrator in time, so that the workshop inventory is fully utilized, the occupation of inventory funds is effectively reduced, and the productivity of enterprises is greatly improved.

The present application relates to the technical field of overhaul of hydroelectric generating set, in particular to a seat ring fixed guide vane opening construction method and a construction device, the method uses the geometric information of the fixed guide vane or its adjacent structure to deduce the datum point of the opening, obtains the first coordinate of the datum point; the profile feature of the fixed guide vane is matched with the datum point of the opening, the second coordinate of the datum point is obtained; the deviation value between the first coordinate and the second coordinate is calculated, the deviation value is compared with the preset threshold value, and the accurate coordinate of the datum point is determined based on the comparison result; the contour line of the opening is determined according to the accurate coordinate and the actual size of the opening; the opening operation is performed according to the contour line of the opening; the present application realizes the accurate calibration of the position to be opened by checking and correcting the positioning results obtained by two ways; then the systematic opening operation including layered drilling, cutting communication, and precise shaping of the orifice and the guide vane head is performed.

The invention discloses a multi-layer-series multi-fault complex fault block edge-expanded well optimization design method, which comprises the following steps: according to a regional stratum layering mode, carrying out whole-region stratification comparative analysis, obtaining a well position deployment target layer, according to a target layer deposition cycle, obtaining an oil layer group, a sandstone group and a single sand body layering standard in combination with a 214 comparison method, finely calibrating earthquake and geologic horizon, and carrying out the optimization design of a multi-layer-series multi-fault complex fault block edge-expanded well. An isochronous stratigraphic framework is established, complex fault block boundary faults and internal inter-well minor faults are subjected to fine recognition, and meanwhile the up-and-down current situation of a target reservoir structure is obtained; the target sand body development condition of an unknown area is obtained, and then complex fault block target reservoir sand body distribution characteristics are obtained; on the basis of the obtained complex fault block oil reservoir data information, the design scheme of the well position in the oil reservoir is optimized; a slave well platform is planned on the ground, that is, three to five wells are drilled on one platform. According to the method, the most effective deployment well position can be determined, and efficient development of the complex fault block is ensured; and the reservoir drilling success rate and the new well utilization rate are improved.

A water wheel-rail remote control piling platform and method, wherein a plurality of steel piles are inserted into the foundation and used to support the Bailey beam, a wheel-rail is provided on the Bailey beam, the wheel-rail supports an electric control trolley, a platform is installed on the electric control trolley, a crawler crane is placed on the platform, the moving direction of the crawler crane is perpendicular to the Bailey beam frame, and its boom suspends a vibrating pile hammer through a steel wire rope. After the Bailey beam is installed by means of the initial several steel piles, the boom of the crawler crane is used to lift and transfer the subsequent Bailey beam to the front steel pile position for repeated piling operations, and at the same time, by means of the longitudinal walking of the electric control trolley, the lateral walking and rotation functions of the crawler crane, the crawler crane realizes the continuous piling function of all-round, large-range and unlimited paths, and at the same time, the operating equipment is supported by the steel piles themselves throughout the process without being affected by the beach and shallow water environment, and continuous operation, transportation and supply are convenient and fast, which improves the adaptability of the piling operation to different waters and creates greater economic and social benefits for bridge construction.

This invention relates to the field of mine ecological restoration technology, and discloses a method and system for mine ecological restoration. The restoration method includes selecting an area with residual heat from underground coal fires on a mine slope where residual coal has spontaneously combusted as a restoration zone; reinforcing and stabilizing the slope of the restoration zone; laying a sludge substrate with a moisture content of 60%-80% on the stabilized slope surface, and using the residual heat from the underground coal fires for in-situ biological drying until the volume reduction reaches a preset threshold of 40%-60%; subsequently, covering the dried sludge substrate with a soil substrate layer and a soil microbial substrate layer to construct a composite growth matrix; and finally, maintaining vegetation on the slope. This invention cleverly combines the residual heat from abandoned mines with urban sludge treatment, achieving the harmlessness, reduction, and resource utilization of sludge, while simultaneously solving the problems of excessively high soil temperatures and difficulty in plant survival in mining areas, achieving the goal of ecological restoration through waste treatment and synergistic efficiency.

The present application relates to the technical field of surgical robots, and discloses a terminal execution assembly, a minimally invasive surgical instrument and a minimally invasive surgical system. The terminal execution assembly comprises a movable piece, a first support, a second support, an engagement assembly, a connecting piece, a first traction wire and a second traction wire. The first support is provided with a first pin and a second pin, the movable piece is connected to the first pin, and the second pin is provided with a first pulley. The second support is provided with a third pin parallel to the second pin, and the third pin is provided with a second pulley. The engagement assembly comprises engaged first tooth structure and second tooth structure, the first support is provided with the first tooth structure, and the second support is provided with the second tooth structure. The connecting piece is movably sleeved on the third pin and connected to the second pin. The first traction wire comprises two first traction sections, the first traction sections are wound around the first pulley and the second pulley, and the first traction sections are connected to the movable piece. The second traction wire is connected to the connecting piece. The first traction wire of the present application will not be pulled, prolonging the service life and improving the safety of the operation.

The utility model discloses a folding structure of a baby carriage frame. Comprising a bicycle folding pull handle, a stay wire body, a stay wire head resistor body, a stay wire spring, a T-shaped stay wire resistor body, a damping rod folding iron sheet, a bicycle folding clamp guide groove, a bicycle folding clamp T-shaped stay wire resistor fixing position, a guide groove protrusion, a bicycle folding spring, a bicycle folding clamp body, a damping rod fixing rubber piece, a guide groove clamping groove, a bicycle folding clamp clamping groove, a basket folding iron sheet, a rear foot U-shaped pipe and a basket pipe. A triangular supporting structure is adopted, the baby carriage can be more stable when being pushed, the phenomena of shaking and instability are effectively reduced, safer and more comfortable riding experience is provided for children, and the iron pipe is ingeniously additionally arranged below the baby carriage folding clamp for supporting so as to solve the problem that the stress of the baby carriage folding clamp part in a traditional baby carriage is weak. The strength of stress points is increased, the weight pressure from a vehicle body and a riding child is effectively dispersed, and the overall bearing capacity and stability of the frame are further improved.

The utility model discloses an insulating slidable anti-toppling device for a ladder truck, which comprises a shell, supporting plates are symmetrically welded on the left side and the right side of the shell, an insulating auxiliary wheel is arranged between the two supporting plates, and a fixed cylinder is welded on the top of the shell; insulating plates are connected to the left side and the right side of the shell and located between the two supporting plates through bolts, adjusting holes are formed in the supporting plates, and shaft rods are fixedly connected to the interiors of insulating auxiliary wheels in a penetrating mode; the top of the fixing cylinder is rotationally connected with a rotating disc through a shaft, and an operation handle is welded to one side of the rotating disc. The insulating slidable anti-toppling device is used for the ladder truck, the ladder truck can still be smoothly pushed on a track when the device is closed through a pair of insulating auxiliary wheels, the operation safety of operators on the ladder truck is guaranteed, meanwhile, two insulating plates are additionally arranged on the contact face of the device and a steel rail, the situation that a track circuit generates a red light band due to operation of the ladder truck is avoided, and the safety of the ladder truck is guaranteed. And equipment operation safety is guaranteed.