426results about How to "Improve unity" patented technology

The invention discloses a heterogeneous time series data fault causal tracing method, which comprises the following steps of: converting discrete variables into hidden continuous variables with higher information granularity through context adaptive excitation Gaussian kernel embedding, and further realizing causal discovery in a unified continuous space; in the potential continuity recovery stage, guiding information of continuous variables is introduced by designing a prediction task, parameters of context self-adaptive excitation Gaussian kernel embedding are adjusted in a self-supervised mode, the potential continuity recovery capacity is enhanced, and reversibility of the recovery process is ensured through a reconstruction mechanism; in the causal structure learning stage, key causal relationships are screened through sparse regularization constraints, an overall causal graph is constructed, and support is provided for fault analysis. According to the method, the time sequence causal relationship can be accurately determined in a heterogeneous variable scene, important reliable information is provided for root cause traceability of process faults, accurate diagnosis of fault sources is assisted, and therefore the safety of actual production is effectively guaranteed.

The invention provides a semiconductor equipment data acquisition method and a semiconductor equipment data acquisition system supporting standardized communication transformation, which are used for realizing data acquisition and process control on different types of semiconductor equipment, formulating corresponding communication rules for equipment conforming to a communication standard, and converting an equipment communication protocol by a cluster system so as to match a standard interface. For equipment which does not completely meet the standard but can realize communication through programming, the trunking system directly acquires required data and converts the required data to meet the standard interface specification. For equipment without communication capability, data is acquired through an equipment interface by adopting an image recognition technology, data input and function operation are realized through simulating keyboard and mouse operation, and finally, protocol conversion from data to a standard interface is completed by a cluster equipment control system. And the equipment data is converted into a message data packet conforming to a standard semiconductor equipment communication interface, so that docking with a semiconductor equipment data analysis and process control system is realized, and the production efficiency and quality of the semiconductor equipment are improved.

The invention discloses multifunctional integrated portable special equipment intelligent inspection equipment and method, and relates to the field of special equipment inspection, and the inspection equipment comprises on-site working equipment which is used for collecting on-site actual measurement data; an intelligent inspection system and an inspection result determination module; the intelligent inspection system comprises an inspection report module and an intelligent question and answer module. The inspection report module is used for receiving field actual measurement data; the system is also used for managing personnel, managing contracts and the like; the intelligent question and answer module is used for providing knowledge retrieval and question and answer auxiliary functions for detecting historical data and law and regulation standard judgment rules for field detection personnel and providing detection qualification judgment rules; and the inspection result determination module is used for forming an inspection result or conclusion according to the field actual measurement data and the inspection qualification judgment rule. According to the invention, modular design and integrated and portable improvement can be carried out on inspection instruments and tools, and unified integrated management of the inspection instruments, the tools and measurement data is realized.

The invention relates to the technical field of cable performance detection, and particularly provides a cable tensile property testing device. Comprising a test bench, the test bench is provided with a cable fixing frame, and the test bench is provided with a force application assembly used for applying a vertically downward traction force; and a plurality of stretching execution mechanisms for carrying out stretching tests on the plurality of cables are fixed on the force application assembly. According to the device provided by the invention, a mode that multiple cables in the same batch and multiple test stations uniformly apply force is adopted, accidental random errors of testing are greatly reduced, flexible fitting, pressing and stretching are carried out on the cables through the stretching execution mechanism, the uniformity of stress distribution is improved, stress concentration is avoided, and the testing efficiency is improved. An anti-tilting clamping design is adopted, so that the uniformity of the test direction is enhanced; besides, the electrical performance test can be synchronously carried out while the structural performance test is carried out in the bending and stretching process, so that the test comprehensiveness is ensured.

The invention relates to the technical field of medical apparatuses and instruments, in particular to a medical apparatus and instrument state management system based on the Internet of Things technology, which can remotely monitor and manage medical equipment and medical consumables in the whole period. Through the combination of the equipment sensor, the Internet of Things platform and the mobile terminal application, medical equipment management personnel can know information such as the operation state, the energy consumption condition, the maintenance period and the operation time of the medical equipment in real time, meanwhile, preventive maintenance can be carried out, related faults can be handled in time, and the quality and efficiency of medical services are improved. By means of intelligent remote monitoring and management, information islands are eliminated, efficiency is improved, data unification and sharing among all systems and departments are achieved, and the purpose of conducting real-time remote monitoring and management on medical instruments in the whole period is achieved.

The invention belongs to the technical field of spectrum detection, and particularly relates to a spectrum smell recognition module which comprises a light source device, a first concave reflector assembly, a second concave reflector assembly, two angle-adjustable reflectors and a spectrum sensor assembly. A gas spectrum absorption cell and a gas spectrum reference cell are formed between the first concave reflector and the second concave reflector, a transparent optical window is arranged between the gas spectrum absorption cell and the gas spectrum reference cell for isolation, and an angle-adjustable reflector is arranged at each of the two ends of the gas spectrum reference cell; by synchronously switching the angles of the two angle-adjustable reflectors, the real-time switching of the spectrum smell recognition module between the gas spectrum absorption cell and the gas spectrum reference cell is realized, and the intensity of the gas spectrum absorption signal is superposed and accumulated through multiple times of switching to carry out spectrum signal analysis. According to the invention, the intensity of a gas spectrum absorption signal and the accuracy and stability of a spectrum signal are improved, and meanwhile, the self-calibration function of the spectrum smell recognition module is also realized.

The invention relates to the technical field of hydroelectric generators, in particular to a three-dimensional flow field load reconstruction method based on reinforcement learning of a gated circulation unit, which comprises the following steps of: establishing a Python-based finite element secondary development platform, and realizing finite element simulation and obtaining a finite element simulation result; fusing a plurality of simulation characteristic indexes extracted from the finite element simulation result by using a multi-scale model fusion algorithm to obtain a finite element simulation result evaluation index, and optimizing simulation parameters; constructing an initial three-dimensional flow field load reconstruction model based on reinforcement learning of a gated circulation unit, and training the initial three-dimensional flow field load reconstruction model by using the optimized simulation parameters; and based on the trained three-dimensional flow field load reconstruction model, obtaining a reconstructed three-dimensional flow field load. By means of the reconstruction method, automatic simulation of finite element software and full-automatic optimization iteration of a parameter decision and reinforcement learning reconstruction network in the three-dimensional flow field load reconstruction process of the hydroelectric generating set component can be achieved.

The invention relates to the technical field of integrated circuit chip packaging, in particular to an integrated circuit chip processing and packaging device and a packaging method thereof. Comprising a workbench, two sets of sliding grooves are symmetrically formed in the workbench, a first threaded rod is rotationally connected into one set of sliding grooves, and the first threaded rod is in transmission connection with a glue sealing assembly; the workbench is fixedly connected with a glue guide mechanism; the glue sealing assembly comprises two sets of movable supports, a second threaded rod is rotationally connected between the two sets of movable supports, and the second threaded rod is in threaded connection with a glue outlet mechanism. A plurality of integrated circuit chips are placed on a slide holder, clamping of the slide holder and a glue guide mechanism is completed, the integrated circuit chips are fixed in a glue injection space, and a first threaded rod and a second threaded rod drive a glue outlet mechanism to perform transverse and longitudinal intermittent movable glue injection until glue injection operation on all the integrated circuit chips is completed.

The invention provides a data processing method and device, and relates to the technical field of computers, in particular to the technical fields of large models, deep learning and the like. According to the specific implementation scheme, a to-be-searched text and data structure information of a heterogeneous storage system are obtained; based on the to-be-queried text, the data structure information and the large language model, structured query statements and a relation set are obtained, and the structured query statements and the relation set comprise at least one structured query statement and an incidence relation between any two structured query statements in the at least one structured query statement; obtaining a data access request of the heterogeneous storage system based on the structured query statement and the relationship set; and querying the heterogeneous storage system by adopting the data access request to obtain a query result of the to-be-queried text.

The continuous profiling equipment is characterized in that a feeding assembly and a discharging assembly are arranged at the two ends of a rack correspondingly, the output end of the feeding assembly and one end of a material arranging assembly are arranged in a spaced and staggered mode, an annular conveying line is arranged below the material arranging assembly, and the annular conveying line is connected with a profiling mechanism in a matched mode; a heating mechanism is arranged between the profiling mechanism and the material arranging mechanism, and cleaning assemblies are oppositely arranged below the heating mechanism at intervals. According to the equipment integrating feeding, heating softening, profiling, discharging and cleaning, heating and extrusion are uniform and sufficient in the processing process of radix puerariae, the profiling requirements of radix puerariae products in different forms can be met by detaching and replacing the upper mold core and the lower mold core, full-automatic production is used, and the radix puerariae profiling efficiency is improved.

The invention provides an intelligent operation and maintenance management system based on a new-generation information technology, and relates to the technical field of digital management. Comprising a business application health management module used for accessing index data collected and cleaned by other modules to an index system; the resource intelligent monitoring module forms a monitoring network topology to realize comprehensive monitoring; the data service and automation module is used for receiving various data sources and carrying out related data processing and storage; the machine room intelligent robot inspection management module realizes power environment inspection and corresponding management; the observation station environment monitoring management module establishes an Internet of Things sensing network; and the network security centralized management module is used for converging, integrating and modeling security data generated by the security infrastructure of each region. The new-generation information technology realizes mechanization and intellectualization, so that the problems of human resource shortage, high management difficulty and the like in operation and maintenance management can be effectively relieved, and the operation and maintenance quality can be further improved.

The present invention discloses a method and system for acquiring design requirements of manufacturing equipment based on product processing actions. The method includes: constructing characteristic elements of equipment design requirements based on product processing actions; constructing a historical question-answer information-design requirement corpus based on product processing actions; constructing an equipment design requirement characteristic element-question relationship database, an equipment design requirement characteristic element-answer information-design requirement relationship database, and an equipment design requirement characteristic element-design requirement relationship database; constructing and training an intelligent algorithm model; acquiring the design requirements of manufacturing equipment based on product processing actions in the form of question-answer dialogue; and confirming and storing the acquired design requirements of manufacturing equipment based on product processing actions. The system includes: a questioning module, an answer information collection module, a storage module, a calculation module, and a final design requirement data output module. This solution not only improves the efficiency of design requirement collection, but also improves the accuracy of requirement collection.

The invention relates to a real-time scene gesture generation method and device and a digital human interaction system, and belongs to the technical field of artificial intelligence. The method comprises the steps of obtaining an input text; generating a basic gesture action of the digital human based on the input text by adopting an action generation model; adopting a similarity matching method to retrieve an index semantic action corresponding to the input text from a pre-established semantic enhancement data set; and superposing the index semantic action into the sequence of the basic gesture actions to generate the gesture action of the digital human. According to the method, a large model technology is introduced, accurate semantic text descriptions of semantic gestures are generated in batches, retrieval matching is carried out through word vector similarity calculation, and index semantic actions are superposed in the generation process of a speaking digital person, so that the semantic effect expressed by the gestures of the digital person is enhanced, and the accuracy of the speech digital person is improved. Unification of language text semantic content and gesture content expression is achieved on the premise that the real-time effect is guaranteed.

The invention discloses an intelligent building engineering management system based on a BIM platform, and relates to the technical field of building engineering management, and the system comprises a BIM model database, a participant interface module, a real-time synchronization module, an automatic notification module, an authority management module and a block chain recording module. According to the intelligent building engineering management system based on the BIM platform, computing resources and storage capacity are flexibly adjusted according to project requirements, and the requirements of projects of different scales are met; the block chain recording module supports a multi-chain synchronization function, and different participants can record on independent chains; therefore, the security of the data is ensured, the expandability of the building engineering management system is improved, and the individual requirements of different participants are met; the automatic notification module adopts a plurality of channel notification modes, and supports a user-defined reminding mode and priority setting of a participant; therefore, information transmission is more flexible and diversified, and working habits and requirements of different participants are met.

The invention provides a water outlet head and a water outlet head mounting method. The water outlet head comprises an assembling seat, a switching assembly, a valve seat, a switch seat and a nut. The assembling base is fixedly arranged at a water outlet of the faucet in advance and provided with a mounting cavity. The switching assembly and the valve seat are sequentially installed in the installation cavity, the switching assembly is provided with a valve rod which is installed in a rotating mode and penetrates through the valve seat, the valve rod is sleeved with the switch seat, the switch seat is in butt joint with the valve seat, a limiting structure for limiting rotation flexibility is arranged between the switch seat and the valve rod, and the nut is locked at the end of the valve rod. The invention provides a water outlet head which solves the problems that when the installation position of a water outlet head is directly arranged on an existing faucet, forming is not easy, precision is poor after forming, and installation errors are large, and therefore a valve seat and a switch seat can be installed in a faucet water outlet in the wanted state or angle subsequently.

The invention discloses a distributed control system based on Tango and EPICS, solves the problem that the existing control architecture cannot meet the requirements for two control architectures of Tango and EPICS, and constructs a robust and agile distributed control system by coupling the flexibility of Tango and the stability of EPICS. According to the hybrid architecture, the Tango and the EPICS are efficiently coupled, so that the adaptability of different experiment requirements to the distributed control system is enhanced.

The invention provides cat litter based on lithium smelting slag and a preparation method and application of the cat litter, and belongs to the technical field of pet supplies, the cat litter based on the lithium smelting slag is obtained by modifying the lithium smelting slag at high temperature, mixing the modified lithium smelting slag with a binder, a preservative and an auxiliary agent, granulating, foaming, drying and screening. The cat litter based on the lithium smelting slag is short in collapsing time, urine and the like can rapidly permeate into the bottom layer of the cat litter, and the cat litter has good water absorption and deodorization performance; the preparation method provided by the invention not only solves the problem of treatment of the lithium smelting waste residue and reduces the risk of environmental pollution, but also provides a new raw material source for production of the cat litter and reduces the production cost.

The invention discloses a multifunctional sensor of an FADS and a total temperature estimation method. The multifunctional sensor comprises a pressure sensor, an adapter, a temperature sensor and a heat flow sensor. The air entraining cover is arranged at the upper end of the base, and an inner cavity is formed between the air entraining cover and the base; a pressure measuring hole is formed in the outer surface of the air entraining cover and is communicated with the inner cavity; a T-shaped air guide hole is formed in the base; an air entraining channel is arranged in the adapter, and the upper end of the air entraining channel is connected with the lower end of the air entraining hole; the lower end of the air entraining channel is connected with an external air path and is used for transmitting pressure; the sensing ends of the temperature sensor and the heat flow sensor are located in the inner cavity and used for measuring the regional temperature in the inner cavity and measuring the heat flow of the pressure sensor. The device has a dustproof and anti-blocking structural design, and integrates the functions of measuring pressure, total temperature, heat flow and static temperature. The device is simple in structure, convenient to install and low in manufacturing cost, and can be applied to an embedded atmosphere data system of a high-speed aircraft.

The invention provides a high-performance fiber composite material automobile bottom protection plate and a process, relates to the field of composite material vehicle parts, and aims to solve the problems that the integration is insufficient and the mechanical synergy performance of the bottom protection plate cannot meet the vehicle protection requirement due to poor connection performance among layers of a current composite bottom protection plate. The connection performance between the middle layer and the face plate layer is remarkably improved through filling of the middle layer and the face plate layer, the connection layer material is melted at high temperature and permeates into a tiny gap between the middle layer and the face plate layer through the infiltration connection technology, so that tight connection between the middle layer and the face plate layer is achieved, a firmer whole is formed between all the layers, and the service life of the middle layer and the face plate layer is prolonged. The phenomenon of layering or stripping is not easy to occur, and the integrity of the bottom guard plate is enhanced; due to the fact that the layers are connected more firmly, the mechanical cooperation performance of the bottom protection plate is improved, and the vehicle protection requirement can be better met.

The invention relates to the field of buildings, in particular to a plug-in type high-strength alloy formwork heightening device and method. The heightening device comprises a body part and a heightening part, a circle of edge of each of the body part and the heightening part comprises a groove, and butt joint holes are formed in the grooves; the connecting locking bar is arranged on the side of the heightening part; the connecting locking bar also comprises a butt joint hole; the connecting locking bar is welded on the heightening part; the locking bars and the body part can be relatively and fixedly connected through the connecting pins, the integrity of formwork assembly is greatly enhanced, and the heightened part is not prone to deformation.

The utility model relates to a feeding mechanism of a rubber internal mixer, which belongs to the technical field of rubber internal mixers and comprises a base and a support column fixedly connected to the top of the base, a fixed table is arranged on one side of the support column, and a storage tank extending to the bottom of the fixed table is arranged on the top of the fixed table. And a quantitative feeding mechanism is arranged at the bottom of the storage tank. According to the feeding mechanism of the rubber internal mixer, a communicating pipe and a quantifying barrel are arranged, so that rubber raw materials in a storage tank fall into the quantifying barrel under the action of gravity, and then an electric push rod is arranged to drive the quantifying barrel to move rightwards; at the moment, the rubber raw materials in the quantitative barrel push away the cover plate under the action of gravity and then fall down, the rubber raw materials can fall into the rubber internal mixer at the moment, then the quantitative feeding effect is achieved, meanwhile, the feeding amount each time is equal to the capacity of one quantitative barrel, and the situation that feeding is not uniform is avoided.

The invention discloses an object variable operation method and device, a storage medium and electronic equipment. The method comprises the steps that in response to variable object operation received in a visual programming interface, a target variable type indicated by the variable object operation is obtained, and the visual programming interface is used for receiving interactive operation so as to generate program content matched with the interactive operation; at least one target variable operation interface matched with the variable object operation is determined from a variable operation interface set, and the variable operation interface set comprises a plurality of variable operation interfaces; according to the at least one target variable operation interface and the target variable type, at least one object operation is executed on a variable object set, the variable object set is used for storing object information of at least one variable object created according to the visual programming interface, and the variable object is displayed in a variable graph block style on the visual programming interface. The technical problem that conventional visual programming is low in efficiency is solved.

The ultrasonic flowmeter module comprises a module body and a cover plate, the module body is in a cuboid shape, the left end and the right end of the module body are two transducer installation areas respectively, the middle of the module body is a control module circuit board installation area, and the cover plate is arranged on the upper surface of the module body; each transducer mounting area comprises a cylindrical barrel, a closed blind hole is formed in the bottom of the barrel, the upper part of the barrel is closed through a cover plate, a through hole I is formed in the position, corresponding to the transducer, of the cover plate, a plurality of screw holes I are formed in the periphery of the barrel, and the control module circuit board mounting area comprises a cuboid frame body; a cavity is arranged between the frame body and the cover plate, the cavity is communicated with the barrel bodies on the two sides respectively to form an inverted-concave-shaped communicated cavity, the two ends of the control module circuit board extend into the barrel bodies respectively, a second through hole is formed in the upper surface of the cover plate at the corresponding position of the frame body, and a cylindrical terminal groove is formed in an opening of the second through hole. The terminal grooves protrude out of the surface of the cover plate. Through the design of the blind holes, the energy converter is prevented from being in direct contact with gas or liquid in the pipe section, and the waterproof performance of the module is improved. And the transducer is connected with the circuit board through a reasonable structural design, so that the exposure of a circuit is reduced, and the stability of a product is enhanced. And through a process of pouring glue for several times, the integration of the module is enhanced, and the waterproof effect is better.

The invention discloses an end-to-end anchor point multi-view image clustering method under the guidance of global principal components, and particularly relates to the field of image processing. Comprising the following steps: acquiring a sub-view sample matrix of each view, and determining a feature mapping matrix; obtaining a global anchor point matrix and an anchor point diagram matrix; obtaining an anchor point fuzzy label matrix in the anchor point diagram matrix, and obtaining a sample fuzzy label matrix based on the anchor point fuzzy label matrix; establishing a target function based on the sub-view sample matrix, the feature mapping matrix, the global anchor point matrix, the anchor point diagram matrix, the anchor point fuzzy label matrix and the sample fuzzy label matrix; the feature mapping matrix is determined again, the sub-view sample matrixes of all the views are converted into the unified potential space again through the feature mapping matrix until the target function converges, and a final sample fuzzy label matrix is output. Unification of objective functions can be realized, so that model optimization is facilitated to obtain a globally optimal solution, and clustering precision is improved.

The invention belongs to the field of medicines, and particularly relates to a fermentation processing method for reducing toxicity of tripterygium wilfordii, which comprises the steps of tripterygium wilfordii matrix treatment, strain activation treatment and bidirectional solid fermentation. The method specifically comprises the following steps: crushing tripterygium wilfordii, and performing high-pressure steam sterilization to obtain a tripterygium And inoculating the fermentation seed liquid of the ganoderma lucidum strain into the tripterygium wilfordii matrix, and carrying out bidirectional solid fermentation. Starting from clinical application practice, the invention provides a more perfect, reasonable and systematic tripterygium wilfordii fermentation and toxicity reduction processing method. The method solves the problems that in the field of tripterygium wilfordii fermentation processing, ganoderma lucidum strains are not clear, most technical methods do not conform to actual clinical medication forms, the processing method has many uncertain factors, the non-druggability is increased after processing, and the like, and has popularization value.

The invention discloses an energy power policy file knowledge base retrieval method based on large model fine tuning, which comprises the following steps: step 1, labeling original text data by using an RDF semantic data model, and importing the original text data into a Freebase database; step 2, constructing a fine tuning data set for performing fine tuning on the LLaMa2-7b model; step 3, performing RDF data annotation on a natural language question to be retrieved, and inputting the RDF data annotation into the fine-tuned LLaMa2-7b model to generate a candidate logic expression C; the method comprises the following steps of (1) obtaining a candidate logic expression list C, (2) updating the candidate logic expression list C into C '', (3) inputting the candidate logic expression list C'' into an SPARQL statement generation function, generating an SPARQL query statement, and retrieving an answer to a natural language question from a Freebase database, thereby realizing the unification and standardization of data formats and improving the retrieval accuracy.

The invention discloses a cable-stayed bridge structure displacement effect analysis method and system, and the method comprises the following steps: S1, data collection and processing: collecting monitoring data related to the displacement response of a cable-stayed bridge, and carrying out the preprocessing of the data, and obtaining a data set; s2, data set expansion: performing spectral analysis on time series data of the cable-stayed bridge by taking a timestamp as an index, performing feature engineering and time-frequency feature extraction to realize expansion of an existing feature number, expanding the expansion data into a data set, and randomly dividing the data set into a training set and a test set; s3, constructing a model to obtain a structure displacement prediction model; and S4, model testing. According to the method, the learnable normalization and anti-normalization technologies are combined, dynamic circulation closing of processes such as data, models, model explanation and explanatory feedback is achieved, the generalization performance of the prediction model is improved, and practical application of a cable-stayed bridge structure displacement effect analysis algorithm model is facilitated.

The invention provides a maintenance method for water leakage of a basement roof, which comprises the following steps: cleaning a roof area, and determining a leakage area; a V-shaped groove is dug; preparing waterproof mortar; the anti-blocking rope is subjected to roughening treatment; immersing an anti-blocking rope; preliminary plugging; waterproof mortar is smeared; screeding and compacting are conducted; maintenance operation on the backwater side of the basement roof is achieved through nine working procedures of film covering and curing, based on the fact that a mortar waterproof agent is added into mortar, internal silicate reacts with a hydration product of cement to generate gel containing silicic acid groups, the gel serves as an aggregate component, in the growth process, pores in concrete can be filled and stuffed, and the service life of the concrete is prolonged. Therefore, the communication of capillary channels is cut off, the porosity in the concrete is reduced, and the compactness and the impermeability are improved; on the basis of combination of the anti-blocking rope and the mortar in the technology, water pressure blocking is achieved, the maintenance time is short, and the speed of solving the leakage problem is high; the maintenance is labor-saving, time-saving and material-saving; and the cost is low.

The present invention relates to the technical field of profile welding, and specifically proposes a seamless welding system for aluminum alloy doors and windows; comprising a welding platform, on which a positioning mechanism for horizontally positioning and placing the aluminum alloy doors and windows is installed, and a welding mechanism for performing welding is installed. The welding system provided by the present invention can synchronously complete the one-time covering welding of all joints on the upper and lower surfaces of the aluminum alloy doors and windows, avoiding the trouble of welding on the changed surfaces, and does not require frequent movement and switching of welding positions and automatic alignment, which greatly improves the efficiency of welding and improves the uniformity of welding; in addition, it can meet the welding requirements for aluminum alloy doors and windows of different sizes, and improves the applicability of the system.

The invention discloses a running direction identification circuit, a reconnection direction control system, a locomotive and a control method. The identification circuit comprises a first mode selection switch, a second mode selection switch, a first relay, a second relay, a first connector, a second connector, a third connector and a fourth connector, the first mode selection switch is arranged in a first cab and is connected with coils of the first relay and the second relay; the second mode selection switch is arranged in a second cab and is connected with coils of the first relay and the second relay; two ends of a normally open contact of the first relay and two ends of a normally open contact of the second relay are respectively connected with the first connector, the second connector, the third connector and the fourth connector. The mode selection switch is used for controlling the first relay or the second relay to be electrified, so that the normally open contact of the first relay or the second relay is controlled to be closed, and the operation direction identification in different operation modes is realized.