7513results about How to "Guaranteed uptime" patented technology

The invention discloses an agent task scheduling planning method, and relates to the technical field of agent scheduling. The method comprises the steps of analyzing a task instruction to generate atomic tasks capable of being independently executed, constructing a subtask dependency graph, and defining association constraints between the tasks; determining the real-time resource occupancy state of the intelligent agent to obtain a resource state tensor, completing resource-task association anchoring and dependency priority ranking in combination with the sub-task dependency graph, and generating a task priority sequence with resource constraint; performing dynamic capability matching and predictive load balancing calculation on the sequence through a task-agent adaptation model, and determining a target execution agent of each atomic task; and based on the target execution agent and the subtask dependency graph, performing time sequence scheduling arrangement and conflict resolution, and generating a collaborative execution scheme. The method improves the reasonability and efficiency of agent task scheduling, reduces resource conflicts and execution timeout risks, and is suitable for agent cluster collaborative scheduling in a complex scene.

According to the multi-source information fusion robot positioning method and system for the unstructured environment provided by the invention, fusion processing is carried out on multi-source information data such as laser point cloud, environment image information and acceleration which are acquired in real time, so that the multi-source information fusion robot positioning method and system for the unstructured environment can be realized in a severe weather state and a dynamic unstructured environment. Carrying out high-robustness real-time positioning under the condition of violent illumination change; in a geometrically degraded roadway area, registration positioning of laser point cloud emission fails due to lack of enough external characteristics, and at the moment, the visual positioning module can still work normally and complete robot repositioning by detecting matched image information; in an environment lacking enough illumination, the laser point cloud and acceleration information can still provide enough positioning fusion data input for the computing unit.

The invention discloses an industrial software cloud base intelligent operation and maintenance and fault self-healing method based on digital twinning, and relates to the technical field of digital twinning. According to the method, the hierarchical digital twinborn model is constructed and dynamically updated, and the operation state of the cloud base is accurately mapped and visually displayed in combination with independent visual modules of a physical layer, a logic layer and an application layer; the method comprises the following steps: calibrating a reference value in real time through a dynamic reference library, quickly identifying abnormity of each layer, generating graded early warning, improving abnormity response timeliness, constructing a dynamically updated fault knowledge graph based on historical fault data, integrating a multi-dimensional correlation analysis and confidence coefficient verification mechanism, positioning a unique fault reason, greatly shortening a fault diagnosis period, and improving fault diagnosis efficiency. And a strategy library is constructed based on a fault knowledge graph and historical self-healing cases, simulation verification is carried out on candidate strategies through a digital twin model, the effectiveness of the self-healing strategies is ensured, and then the self-healing strategies are issued and executed, so that intelligent and automatic fault repair is realized, and stable operation of the cloud base is ensured.

The invention relates to a gas nano purifier. The gas nano purifier comprises a mounting seat, the gas storage bin is installed on the installation base and used for storing clean gas, the side wall of the upper portion of the gas storage bin extends upwards to form an installation plate, and a gas path through hole is formed in the middle of the installation plate; the gas-water separator is mounted on the mounting plate and is used for carrying out primary purification on to-be-cleaned gas; the adsorption tower is mounted on the mounting plate and is used for carrying out secondary purification on the to-be-cleaned gas; gas to be cleaned sequentially flows through the gas-water separator and the adsorption tower and then enters the gas storage bin; the adsorption tower is communicated with the gas storage bin through an exhaust pipe; and the exhaust pipe penetrates through the gas path through hole. Through the arrangement, the installation operation is greatly simplified, and the integrity and the space utilization rate of equipment are improved.

The utility model relates to a secondary ink cartridge assembly for a printer, which comprises a secondary ink cartridge body, the secondary ink cartridge body comprises an ink cartridge body and an ink cartridge cover which are mutually sealed and covered, a high-pressure ink cavity, a low-pressure ink cavity and a normal-pressure ink cavity are arranged in the ink cartridge body, and the high-pressure ink cavity, the low-pressure ink cavity and the normal-pressure ink cavity are respectively provided with a liquid level sensor. The high-pressure ink cavity is sequentially communicated with the printing spray head, the low-pressure ink cavity, the normal-pressure ink cavity, the second ink pump, the bubble removing device and the first ink pump, so that ink flows out of the high-pressure ink cavity, sequentially flows through the printing spray head, the low-pressure ink cavity, the second ink pump, the normal-pressure ink cavity, the first ink pump and the bubble removing device and then flows back into the high-pressure ink cavity, and therefore a self-circulation ink path is formed. According to the secondary ink box, ink between the secondary ink box body and the printing spray head keeps continuous circulating flow, precipitation is avoided, the temperature of the ink entering the printing spray head is appropriate and constant, the bubble content is small, the pressure fluctuation is small, and therefore the printing quality is higher, and the printing effect is better.

The invention relates to the technical field of wastewater treatment, and discloses a multi-stage wastewater treatment device for wood production, which comprises a treatment tank, and further comprises a filter cartridge I and a filter cartridge II which are cylindrically arranged in the treatment tank, and the filter cartridge II is positioned in the filter cartridge I and is used for sequentially separating impurities in wastewater; the water outlet pipe is arranged at the bottom of the filter drum II and is used for guiding out the treated wastewater; the water inlet pipe is arranged at the bottom of the treatment tank. By adopting the filter cartridge I and the filter cartridge II, continuous multi-stage filtration from rough filtration to fine filtration is realized, saw dust, fibers and other impurities with different particle sizes are removed at one time, meanwhile, online self-cleaning is synchronously carried out, and rotary filtration and filter screen cleaning are synchronously carried out through motor driving; therefore, the problem that traditional filtering equipment must be frequently shut down and manually cleaned due to quick blockage of a filter screen is solved, continuous and uninterrupted efficient operation of the wastewater treatment process is ensured, and the overall treatment efficiency and production continuity are greatly improved.

Belonging to the field of petrochemical engineering, the invention discloses a catalytic slurry oil purification device, which comprises a tank body, and a feed end and a discharge end respectively arranged at two ends of the tank body. An upper partition plate and a lower partition plate are fixedly connected to the inner wall of the tank body, a discharging opening is formed in the upper partition plate, and a feeding opening is formed in the lower partition plate; the interior of the tank body is divided into three independent cavities by the upper partition plate and the lower partition plate; according to the scheme, the filter element is sleeved with the hollow cylinder, and the rotatable first spiral flow deflector is further arranged between the inner wall of the hollow cylinder and the outer wall of the filter element; a rotatable first spiral flow deflector is further arranged between the inner wall of the hollow cylinder and the outer wall of the filter element; a shear force generated by rotation of the first spiral flow deflector can prevent a filter cake on the surface of the filter element from forming a compact thick layer; a filter cake layer can be controlled within a relatively thin thickness range, and the rising speed of the pressure difference is delayed, so that the operation duration of a single filtering period is prolonged; and the single-time continuous treatment capacity of the device is greatly improved.

The invention discloses a permanent magnet synchronous motor sensorless control method based on a dynamic position error. A transition stage is provided, per-unit estimation position errors between a first position error signal obtained based on a high-frequency signal injection method and a second position error signal obtained based on a sliding mode observer are compared, an optimal switching speed point is dynamically determined, smooth fusion is carried out on the two position errors by using a nonlinear weighting function, and the optimal switching speed point is obtained. And finally, the estimated position and rotating speed are obtained through a phase-locked loop. And finally, position tracking is carried out by adopting different error signals according to the estimated rotating speed. According to the method, the problem of estimation value pulsation and jump caused by the fact that a traditional method depends on fixed experience switching points is solved, smooth and self-adaptive switching of the two estimation methods in the full-speed domain range is achieved, the control precision and operation stability of the system are remarkably improved, the structure is simple, and engineering implementation is easy.

The invention relates to the technical field of drying, and discloses a solar heat collection tube heating and drying device and a tube row manufacturing method thereof.The solar heat collection tube heating and drying device comprises a first rack, and a first heat collection module is arranged on an inclined mounting platform formed by a first-stage step and a second-stage step of the first rack; a drying cavity defined by first steel plates is installed on the outer wall of the three-stage step of the first rack, and a first partition plate is arranged in the drying cavity. A second partition is arranged on the top surface of the first partition, a third partition is arranged on the side wall of the second partition, and an air delivery pipe is arranged between the third partition and the first partition; an air inlet shutter is mounted on the first steel plate, a fan opposite to the air inlet shutter is mounted on the second partition plate, and an exhaust shutter is mounted on the first steel plate; a supporting beam located above the third partition plate is arranged on the first rack, a footstand is arranged on the supporting beam, and a drying bin used for drying corn is placed on the footstand; according to the device, the solar energy utilization rate is increased through the heat collection structure, heat collection and drying chambers are reasonably partitioned, the airflow circulation path is clear, and stable drying of corn is achieved.

The invention relates to the technical field of equipment compensation control, and discloses a medical suction device with an altitude compensation function and a control method thereof. The method comprises the following steps: reading ambient air pressure data of a first pressure sensor, reading molecular sieve tank differential pressure data of a second pressure sensor, collecting pressure data of an output end of a third pressure sensor, and determining a real-time altitude according to the ambient air pressure data; a breathing pressure fluctuation value is calculated based on the molecular sieve tank differential pressure data, when the breathing pressure fluctuation value is lower than a preset negative pressure threshold value, the current breathing frequency is recorded, and nitrogen removal time, pressure equalizing time and flushing time are determined to control an electromagnetic valve to work; and when the oxygen concentration is lower than a first concentration threshold value and the real-time altitude height is lower than a preset height, increasing the nitrogen removal time by a first preset proportion and increasing the target rotating speed by a second preset proportion, and when the oxygen concentration is lower than a second concentration threshold value, stopping the operation of the compressor and closing all the electromagnetic valves. According to the invention, the false alarm rate is effectively reduced, and the equipment safety is improved.

The invention discloses high-purity oxamide with concentrated particle size and spherical morphology, a preparation method of the high-purity oxamide and application of the high-purity oxamide in preparation of a slow-release fertilizer, and belongs to the technical field of oxamide synthesis and application. The method comprises the following steps: mixing an ammonia-alcohol solution and an alcohol ester solution, conveying the mixed solution into a series tubular reactor for reaction, and then conveying the mixed solution into a parallel tubular reactor for reaction after pressure stabilization and flow equalization to obtain a reaction solution containing oxamide; performing flash evaporation on the reaction liquid to obtain flash evaporation liquid and flash evaporation gas, and performing solid-liquid separation on the flash evaporation liquid to obtain solid oxamide and filtrate; and drying the solid oxamide to obtain the oxamide. The method realizes high conversion rate and high purity, and the product has ultrafine particle size distribution. The purity of the prepared oxamide is greater than or equal to 99%, the D50 particle size is concentrated to 50 + / -15 microns, the spherical morphology is uniform, the release is stable, and the oxamide has a very good effect in preparation of long-acting slow-release fertilizers and combustion inhibitors and research on the nitrogen utilization rate.

The utility model discloses a plastic wood product production system device which comprises a main material storage and conveying area, an auxiliary material feeding and weighing area and at least one mixed material conveying, extruding and feeding area. A CaCO3 main material storage and conveying unit, a CaCO3 transition unit, two groups of PVC main material storage and conveying units and a wood powder main material storage and conveying unit are arranged in the main material storage and conveying area; a group of auxiliary material pouring bin dedusting and weighing units are arranged in the auxiliary material feeding and weighing area; a mixing unit, a mixture conveying unit and a mixture storage and extrusion feeding unit are arranged in the mixture conveying, extruding and feeding area. The device has the advantages of being efficient in operation, high in weighing precision, good in mixing effect, remarkable in energy conservation, environmentally friendly, high in automation degree and the like.

This application belongs to the technical field of air compressor safety, and particularly relates to a safety operation method for a piston air compressor. A safety operation method for a piston air compressor includes the following steps: S1, a flexible baffle is provided on an air-cooled plate cooler connected to the piston air compressor; S2, temperature data of each cooling unit at the current moment is obtained, and at the same time, the temperature change trend and the opening area change trend of the air outlet end of each cooling unit are obtained; S3, according to the pressure dew point temperature of the air outlet end of each cooling unit at the current moment, the opening area of each cooling unit at the current moment is adjusted to change the coverage degree of the flexible baffle on the air-cooled flow channels of each cooling unit at the next moment, so that the temperature of the air outlet end of each cooling unit is always above the corresponding pressure dew point temperature. This application can尽量避免活塞式空压机在运行的过程中发生冰堵或油乳化,保证活塞式空压机的安全运行。 It should be noted that there is an unclear part in the original Chinese text "尽量避免活塞式空压机在运行的过程中发生冰堵或油乳化,保证活塞式空压机的安全运行。" which may need to be further clarified for a more accurate translation. The above translation is based on the best understanding of the current text.

The invention belongs to the technical field of search engines, and particularly relates to an optimized search engine construction method and system based on feature deep learning, and the system comprises a search operation unit, a monitoring and early warning unit and a management and control terminal, the search operation unit comprises a multi-dimensional semantic feature mining module, a user implicit intention analysis module, a deep feature fusion modeling module and a dynamic retrieval strategy generation module; a multi-dimensional semantic feature set and a user intention feature set are formed through a multi-dimensional semantic feature mining module and a user implicit intention analysis module, and a deep feature fusion modeling module performs deep fusion of data features and user intention features through an attention mechanism and cross validation optimization. The dynamic retrieval strategy generation module is used for providing high-quality feature support for retrieval strategy generation, the accuracy of retrieval results is guaranteed, the dynamic retrieval strategy generation module generates dynamic strategies adaptive to different requirements and data states on the basis of reinforcement learning, and the retrieval accuracy and retrieval efficiency of a search engine are remarkably improved.

The invention discloses a control method of a micro light-emitting unit array display, the micro light-emitting unit array display and a computer program product. According to the control method, a panel scanning time sequence and an inter-frame blank interval are generated based on the input refresh rate of a current frame, and refreshing is performed according to the time sequence, so that the actual refresh rate of the display is kept consistent with the input refresh rate. In the refreshing process, in order to avoid the situation that black insertion cannot be executed under the low refresh rate condition, the target refresh rate special for backlight black insertion control is further generated according to the input refresh rate, the target refresh rate is larger than or equal to the preset refresh rate threshold value, and therefore backlight black insertion can be started even in the variable refresh rate mode. Based on this, according to the target refresh rate and the liquid crystal response stage of the backlight of the display in the current frame period, the backlight can be controlled to be closed in the non-lighting window and to be opened in the lighting window according to the target brightness, so as to realize the cooperative control of black insertion execution, backlight lighting and refresh time sequence.

The invention discloses a method for improving data transmission bandwidth through an FPGA. The method comprises the steps that a data packaging module of a detector main control board sends data to be transmitted to a multi-channel GTP sending end in parallel; the data acquisition card receives the data of the corresponding channels through the multi-channel GTP receiving end and recovers Data and KCOD of each channel; an FIFO read-write control module of the data acquisition card writes data recovered by multiple channels into asynchronous FIFOs corresponding to the channels through write logic, and data buffering is carried out; the FIFO read-write control module simultaneously reads cache data of a plurality of asynchronous FIFOs through read control logic to realize cross-clock domain synchronization of multi-channel data; performing CRC (cyclic redundancy check) and processing on the read multi-channel data to obtain synchronous effective transmission data; and a single-channel GTP is upgraded to a dual-channel GTP or a multi-channel GTP, so that the data transmission bandwidth is improved, and normal operation of the FPGA chip is ensured.

The invention discloses a PCIe-based CPU, NPU and GPU interconnection cluster management method, and belongs to the technical field of interconnection cluster management. According to the method, an interconnection link is established through a PCIe switch, and bandwidth is dynamically allocated by means of the link to adapt to task requirements; multi-priority data transmission is supported, and bandwidth resources are distributed in order according to priorities; a multi-element operation mode is configured in advance, and physical and virtual computing power resources are distributed according to needs; and an equipment state monitoring mechanism is established, idle equipment enters a sleep mode, and meanwhile, all transmission links are combed and an optimal path is selected. According to the method, fine scheduling of cluster resources is realized, the bandwidth and computing power resource utilization rate is improved, the adaptation capability to different tasks is enhanced, the orderliness and stability of data transmission are guaranteed, the cluster operation energy consumption is reduced, and efficient and stable operation of the interconnected cluster is facilitated.

The invention belongs to the technical field of industrial combustion safety control, and provides a double-channel industrial furnace gas combustion safety interlocking control system which comprises a gas / air flow ratio dynamic monitoring module, a flue CO concentration online detection module, a double-channel data conflict arbitration processor and a visual human-computer interface. Aiming at the prominent problems of incomplete combustion of coal gas, carbon deposition, detonation risk and the like which are easy to occur under the working condition of accelerated temperature rise, the system integrates visual double-insurance safety control of dynamic calculation of a flow ratio and real-time analysis of tail gas components, and all-directional safety protection in the combustion process is realized through a multi-parameter cooperative monitoring and intelligent interlocking mechanism; the detonation risk is obviously reduced; meanwhile, the air-fuel ratio fluctuation is accurately controlled within the range of + / -5%, and the carbon deposition phenomenon is effectively reduced; and remarkable economic benefits are created while reliable operation of equipment is guaranteed.

The invention relates to a reflective robust visual identification and equivalent unbalance estimation method for continuous strip-shaped material corrugations. The method comprises the steps of collecting image frames of a continuous strip-shaped material and synchronously obtaining metadata, carrying out corrugation identification, segmentation and classification on a preprocessed image, and outputting a corrugation mask, a corrugation category, a pseudo-corrugation mask and confidence; wrinkle parameterization features are extracted from the wrinkle mask, and parameterization vectors are obtained; outputting an estimation uncertainty based on the parameterized vector and the metadata; when an external sensor signal exists, performing multi-source adaptive fusion to obtain a fusion equivalent unbalance amount; and performing conflict diagnosis on the visual equivalent unbalance and the external signal equivalent unbalance, and executing a degradation state machine strategy according to a diagnosis result. According to the method, robust identification and accurate classification of the surface wrinkle defects of the continuous strip-shaped material can be realized in a complex optical interference environment, so that a quantifiable control basis is provided for closed-loop adjustment and quality monitoring in a production process.

The invention discloses an industrial intelligent safety risk early warning and management and control platform, and relates to the technical field of industrial safety monitoring and management and control. The industrial intelligent security risk early warning and management and control platform comprises a full-scene perception layer, a data management layer, an intelligent risk identification layer, a hierarchical management and control layer and a global operation and maintenance layer, and each layer and an edge computing node construct a distributed data interaction network through an industrial Ethernet; the scene sensing layer is used for realizing all-region and all-time security data acquisition of industrial production and comprises a multi-mode sensing terminal array, an equipment protocol adaptation module, a personnel state monitoring unit and an acquisition scheduling module; according to the industrial intelligent safety risk early warning and management and control platform, through a multi-mode terminal array and a dynamic acquisition scheduling mechanism of a full-scene sensing layer, full-area and full-time-period automatic monitoring of industrial production is realized, dependence on manual inspection is thoroughly eliminated, the problems of low manual inspection efficiency and missing inspection of hidden risk points are effectively solved, and the industrial production safety risk early warning and management and control platform is suitable for popularization and application. And the monitoring coverage rate is improved to 100%.

The utility model relates to a heat dissipation and flow guide structure, and provides the heat dissipation and flow guide structure for the charging cabin of the unmanned aerial vehicle, which comprises a cabin body, a shell, a charging seat, an integrated module and the like, a shell is fixedly arranged on the upper left portion of the cabin body, a control panel is arranged on the upper portion of the shell, an integrated module is arranged on the upper rear portion of the cabin body, an inner groove is formed in the cabin body, an E-shaped charging base is fixedly arranged in the inner groove, and the charging base and the inner groove are matched to form two charging grooves which are symmetrical front and back. During use, after airflow introduced by an air inlet fan is shunted by the flow guide cover and the T-shaped groove, part of the airflow takes away heat through a transverse airflow channel formed by the fin rays, and the other part of the airflow enters the flow guide groove of the U-shaped plate, so that the heat of the contact seat conducted by the heat conducting plate I and the heat of the charging bin conducted by the heat conducting plate II are combined; and finally, the air is discharged by the air outlet fan through the air transmission opening and the L-shaped groove, so that comprehensive heat dissipation of the charging seat, the contact seat and the charging cabin position in the charging cabin is realized, and the heat dissipation efficiency is effectively improved.

The invention discloses a cold-chain pork quality dynamic evaluation method and system based on multi-source data fusion, and relates to the technical field of data processing and intelligent evaluation, and the method comprises the following steps: collecting multi-source signal information of a whole cold-chain transportation process, sorting according to a unified time sequence, continuously arranging all signals on a time axis, and carrying out data processing on all the signals; a complete dynamic record is formed; and extracting each time interval and signal amplitude change track from the formed dynamic record, analyzing a signal section with repeated wave crests in a short time, and generating a preliminary data manuscript for reflection interference judgment. According to the invention, through time sequence arrangement and dynamic association of multi-source signals, a wave crest track analysis mechanism is constructed, real-time identification and correction of reflection interference are realized, and continuity and accuracy of a gas concentration curve are ensured; and by generating a reflection source position list and adjusting numerical value distribution of repeated fragments, false fluctuation is eliminated, and the stability and reliability of cold-chain pork quality evaluation are improved.

The utility model discloses an anti-slip clamping mechanism for vertical laying of a cable, which relates to the technical field of cable laying and comprises a mounting rack, one side of the top of the mounting rack is provided with a first slot, two rotating shafts are rotatably arranged in the first slot, and the peripheries of the rotating shafts are fixedly connected with first clamping wheels; a connecting frame is fixedly connected to one side of the mounting frame, a second open groove is formed in the side, close to the first open groove, of the connecting frame, a moving frame is slidably arranged in the second open groove, a moving block is slidably arranged on the side wall of the moving frame, a square groove is formed in the top of the moving block, and a plurality of second clamping wheels are rotatably arranged in the square groove. And clamping grooves are formed in the bottoms of the moving block and the mounting frame. According to the utility model, the arrangement of the cleaning block can further clamp and limit the cable, the cleaning block cleans the periphery of the cable and increases the roughness of the surface of the cable during vertical laying, and the first clamping wheel and the second clamping wheel are matched, so that the anti-skid of the cable can be maintained under a small pressure, and the cable is prevented from being clamped too tightly.

The invention discloses an intelligent trash-cleaning machine based on AI visual identification, and belongs to the field of visual identification, the intelligent trash-cleaning machine comprises an AI visual identification module, an intelligent control system and a rotary trash-cleaning execution mechanism, the AI visual identification module is in communication connection with the intelligent control system, and the intelligent control system is electrically connected with the rotary trash-cleaning execution mechanism; through cooperative work of the AI visual recognition module and the intelligent control system, precise recognition and efficient cleaning of dirt in water are achieved, and compared with a traditional dirt cleaning mode, the system has remarkable advantages. The method is excellent in recognition capability, sewage disposal efficiency, response speed, adaptability and the like, and can be widely applied to pretreatment scenes of pump station water inlets, urban river channels, reservoir spillways, sewage treatment plants and the like. Popularization and application of the trash remover can bring good economic, social and environmental benefits, powerful technical support is provided for water area treatment, and the trash remover has wide market prospects and development potential.

The invention relates to the technical field of thread rolling machining, and discloses penetrating rod thread rolling equipment for an automobile air brake, the penetrating rod thread rolling equipment comprises a plurality of sets of thread rolling mechanisms which are sequentially connected in series, and each thread rolling mechanism comprises a feeding assembly, a thread rolling machining assembly, a discharging assembly, a feeding assembly and a detecting assembly; the detection module is used for detecting materials, the discharging module is used for discharging unqualified materials, and qualified materials can enter a thread rolling station; the thread rolling machining assembly is used for conducting thread rolling machining on the materials at the thread rolling station. The hopper in the subsequent thread rolling mechanism is in butt joint with the discharging assembly in the previous thread rolling mechanism. Three sections of threads are machined at a time by splicing the three thread rolling mechanisms, automatic conveying is achieved between the adjacent thread rolling mechanisms, materials do not need to be manually conveyed in sequence, the production efficiency is remarkably improved, and manual intervention is reduced; before entering the thread rolling process, the penetrating rod is subjected to at least one detection, defective products are eliminated, and the production requirements of high-precision parts are met.

The present application relates to the technical field of axial flow pumps, and particularly relates to a self-cleaning axial flow pump. The self-cleaning axial flow pump comprises a water guide shell, a fixed shell and a first bolt frame are fixedly connected to the upper side of the water guide shell, the first bolt frame is fixedly connected with the fixed shell, a rotating shell is rotatably connected to the first bolt frame, a driving motor is fixedly connected to the water guide shell, the water guide shell and the fixed shell are rotatably connected with a rotating shaft, and the rotating shaft is fixedly connected with an impeller at one end in the water guide shell. The present application is aimed at the problem that the eccentric rotation of the impeller caused by unbalanced load or poor assembly further causes the collision between the impeller and the pump body and causes damage, and proposes a design combining real-time monitoring and split connection. The design forms an active connection between the impeller and the power source, and when the monitoring system detects the abnormality of the impeller, the connection between the two is automatically disconnected, so that the potential damage of the impeller and other key components is effectively avoided.

The invention discloses a near-far field communication cooperation and self-discipline decentralized train operation control method, device and system, and belongs to the field of rail transit, near-field communication and middle-far field communication are used for providing train-to-ground, ground-to-train and train data transmission channels, all the transmission channels are fused and work cooperatively, the advantages of two communication modes are reserved, mutual cooperation and redundancy are achieved, and the reliability of the system is improved. According to the invention, trackside equipment is simplified, fine management of track resources is realized, mobile block or virtual coupling is realized, a backup mode for automatic block control can be provided, multiple redundancy of key functions such as train positioning, train position tracking and train-ground communication is improved, intelligent control functions such as automatic driving are easy to realize, and the environment adaptability is strong; train operation control of different rail systems is supported, and reliable, efficient and economical train operation control can be achieved; and meanwhile, a self-discipline decentralized control idea is adopted, global efficient planning operation of the center is utilized, and small-range adjustment of stations and individual trains is utilized, so that efficient operation of the train control system is realized.

The invention relates to the technical field of continuous casting, in particular to a continuous casting fan-shaped section roller gap adjusting system and a control method.The continuous casting fan-shaped section roller gap adjusting system comprises a three-section type densely-arranged roller structure, and each section of roller is connected with a main body frame through a roller gap adjusting unit; a pipe conveying structure is further arranged and used for conveying lubricating oil gas, cooling gas, cooling liquid and cooling aerial fog, and various detection devices and processors are arranged. The roller gap control method comprises the steps of collecting the roller temperature, the pulling speed and the abrasion loss in real time, establishing a roller gap compensation amount calculation formula, conducting closed-loop adjustment, detecting surface defects after casting blanks are offline, and updating the calculation formula. The technical effects that the continuous casting fan-shaped section roll gap is accurately adjusted, system operation parameters are monitored in real time, the compensation formula is dynamically updated according to the casting blank condition, and the casting blank quality is improved are achieved.

The utility model provides a novel Chinese cabbage digging trolley. The novel Chinese cabbage digging trolley comprises a frame, a driving unit, a transmission mechanism, a digging mechanism and a collecting device. The frame is made of aluminum profiles and steel materials, and the front end of the frame is provided with an open groove for containing the excavating mechanism. The digging mechanism forms a double-crank structure through cooperation of a first rotary disc, a second rotary disc and a tool rest so as to achieve rotation and telescopic movement of a tool bit, and digging and conveying of Chinese cabbages are completed. And stepless adjustment of the digging depth can be realized. The collecting device is of a double-layer net structure, and efficient buffering and collecting of Chinese cabbages are guaranteed. The digging efficiency can be remarkably improved, the labor intensity is reduced, the method adapts to complex terrains, the requirements of small farmers are met, and the wide application prospect is achieved.

The invention relates to the technical field of motors, in particular to a magnetic self-centering motor assembling method which is applied to a motor and comprises the following steps: forming a rotor assembly; a rotor assembly is rotatably and preliminarily installed on a base through a rotating shaft assembly, an end cover is preliminarily installed on the base, a bearing chamber of the end cover supports an outer ring of a bearing on the rotating shaft assembly through a radial elastic supporting unit, and the radial elastic supporting unit allows the outer ring of the bearing to slightly and radially float; a driving current is applied to the stator assembly, so that the rotor assembly generates a rotation trend or rotates at a low speed, and the rotor assembly is driven to overcome the micro radial rigidity of the radial elastic supporting unit by utilizing the unbalanced magnetic pulling force of interaction between the rotor assembly and the stator assembly; and the rotation axis of the stator assembly is automatically adjusted to a position which tends to be coaxial with the central axis of the stator assembly. The method can actively compensate radial dimension chain errors and assembly deviations accumulated in the previous process.