837results about How to "Avoid mutual interference" patented technology

The invention provides a method for measuring the conductivity and the inner diameter of a pipeline based on sweep frequency eddy current. The method comprises the following steps: establishing an eddy current detection device, designing an absolute eddy current detection coil, placing the coil in a metal pipeline, arranging the coil and the pipeline coaxially, introducing alternating current to excite an alternating magnetic field, and inducing eddy current on the surface and the near surface of the pipeline; establishing a metal pipeline eddy current analysis theoretical model, setting coil geometric parameters, and calculating an analysis expression of coil impedance changing along with excitation frequency; calculating the peak frequency and the corresponding phase value of the impedance phase of the coil in a frequency sweep mode, respectively changing the conductivity and the inner diameter of the pipeline, extracting the corresponding peak frequency and phase value, and constructing an inner diameter relation model based on quadratic curve fitting and a conductivity relation model based on power function fitting; and inverting the inner diameter and the conductivity of the metal pipeline by combining a coil impedance sweep frequency phase measurement result. The method can be used for simultaneously measuring the conductivity and the inner diameter of the pipeline, and is suitable for nondestructive testing and performance evaluation of the metal pipeline.

The invention discloses rapid die casting equipment for aluminum alloy die castings, and relates to the technical field of metal die casting. A first channel is formed in a die plate and an ejector rod, and a spray hole communicating with the first channel is formed in the ejector rod; according to the device, the mold release agent can be sprayed to the relatively-closed die-casting cavity in a mold closing state, the comprehensive uniformity of the mold release agent during adhesion is improved, the demolding effect after a die casting is formed is improved, the mold release agent is sprayed in the relatively-closed die-casting cavity, and the mold release effect is improved. According to the die-casting mold core, the release agent can be prevented from escaping outwards, the surrounding environment can be protected easily, waste of the release agent can be avoided, energy-saving, environment-friendly, green and efficient die-casting production is achieved, meanwhile, the spraying holes are formed in the cylindrical face of the end of the ejector rod, the spraying holes cannot be exposed when the ejector rod retracts into the die core, and the die-casting mold core is more environment-friendly. And interference to die-casting production due to the fact that the spraying holes are exposed in the die-casting cavity can be avoided.

The invention relates to a full-automatic QuECHERS experimental device, and relates to the technical field of sample pretreatment, the full-automatic QuECHERS experimental device comprises an extraction unit and a pipetting unit, the extraction unit comprises: a first tube rack module comprising a plurality of test tube racks; a carrying mechanical arm; the first cap screwing module comprises a tube cap clamping and lifting assembly acting on a tube cap, a tube body clamping and rotating assembly acting on a tube body and a first sliding rail assembly for conveying a test tube to a next station; the sample adding module comprises a homogeneous proton adding module and a salt pouring module; the second cap screwing module comprises a pipe body clamping and rotating assembly, a pipe cap clamping and lifting assembly and a second sliding rail assembly for realizing communication and conveying of the extraction unit and the pipetting unit; the invention discloses a pipetting mechanical arm and a gun head frame. The device is provided with the extraction unit capable of synchronously performing extraction operation and the pipetting unit capable of performing pipetting operation, so that the extraction operation and the pipetting operation are synchronously performed during pesticide residue inspection, and the experimental efficiency and the applicability of the device are effectively improved.

The invention discloses an NO and SO2 mixed gas concentration detection method based on deep learning, and the method comprises the steps: obtaining a to-be-detected NO and SO2 mixed gas, inputting the to-be-detected NO and SO2 mixed gas into a trained mixed gas concentration detection model, and obtaining the concentration detection results of the respective single gases of NO and SO2; according to the model, mixed gas spectrum separation and reconstruction are carried out through a separation and reconstruction model based on a bidirectional long-short-term memory network, so that differential absorption spectrums of two single gases NO and SO2, which are output by the separation and reconstruction model, are obtained at one time; and carrying out feature extraction and concentration prediction on the input sequence data through a concentration detection model based on TCN + RNN network so as to obtain concentration detection results of respective single gases of NO and SO2 as outputs. The method provided by the invention can realize spectral separation of the mixed gas and accurate detection of the concentration of NO and SO2, thereby overcoming the problems of cross sensitivity of SO2 and NO and differential optics of incapability of accurately separating SO2 and NO by a traditional treatment method.

The invention discloses a dexterous hand finger based on connecting rod transmission, a bionic mechanical arm and a humanoid robot, belongs to the field of bionic mechanical arms, solves the problem that a transmission mechanism of an existing dexterous hand is low in response speed, and adopts the technical scheme that the dexterous hand finger mainly comprises a finger base and a finger body, a driver and a transmission mechanism in transmission connection with the driver are arranged on the finger base, the driver drives the finger body to bend and / or swing through the transmission mechanism, the transmission mechanism comprises a guide piece and a sliding block installed on the guide piece in a sliding mode, and the sliding block is in transmission connection with the finger body. A traction rope connected with the sliding block is wound on an output shaft of the driver, the driver controls the output shaft to rotate forwards and backwards so as to drag the sliding block to slide back and forth along the guiding piece through the traction rope, and then the finger body is controlled to bend and / or swing. The finger is mainly used for driving the sliding block to move through the pulling rope so as to control the finger body to bend and swing, and the response efficiency of the finger body can be improved.

The invention discloses an unmanned charging control method, device and system and a storage medium, and the method comprises the steps: responding to a vehicle parking signal when the vehicle parking signal corresponding to a to-be-charged vehicle is obtained, and controlling a six-degree-of-freedom mechanical arm control mechanism to execute a charging gun grabbing action, controlling the charging gun to move to a target charging position corresponding to the vehicle to be charged; when the charging gun moves to the target charging position, the six-degree-of-freedom mechanical arm control mechanism is controlled to execute the charging gun plugging action, so that the charging gun is controlled to be in butt joint with the vehicle needing to be charged; and when butt joint is completed, the six-degree-of-freedom mechanical arm control mechanism is controlled to execute a homing action, and the charging pile is controlled to charge the vehicle needing to be charged through the charging gun electrically connected with the charging pile. Quick response and power matching of the electric vehicle on any charging parking space can be achieved, universality and practicability are high, charging power is large, efficiency is high, and unmanned intelligent charging is truly achieved; the device is simple in structure, mature in technology, low in cost and suitable for popularization and application.

The invention discloses a tunnel outburst prevention rock mass fracture extension continuous monitoring method based on micro-seismic infield positioning, which comprises the following steps: S1, according to the distance L between a disaster-causing structure and a tunnel face, drilling an advanced drill hole in the tunnel face, acquiring lithology and water inflow information of surrounding rock, and preliminarily determining an outburst prevention rock mass hydraulic communication area range; s2, micro-seismic sensors are arranged on the arch crown, the left wall foot and the right wall foot within the range of L / 2-2 m to L / 2 + 2 m in front of the tunnel face in the drilled advance drill hole correspondingly; s3, recording seismic source microseismic signal frequency, duration and waveform of explosive blasting, mechanical vibration and vehicle traveling, and screening microseismic signals of crack extension in the rock mass; s4, performing rock mass internal fracture extension seismic source positioning by adopting a simplex method; and S5, drawing a micro-seismic event three-dimensional model, and determining the expansion and evolution characteristics and range of the fractures in the hydraulic communication area. According to the invention, the monitoring continuity of the outburst prevention rock mass fracture evolution process of the tunnel and the positioning precision of the water inrush channel can be improved.

The invention specifically relates to a pressure sensor comprising a seat body, one end of which is provided with an inner cavity defining an opening and a pressure introduction channel extending from the other end to be communicated with the inner cavity; the pressure measuring assembly is arranged in the inner cavity; the annular electric contact element is arranged in the inner cavity, the electric contact element comprises a plurality of independent electric contact parts arranged on the inner wall or the outer wall of the electric contact element, and each electric contact part is electrically connected to the pressure measuring assembly; one end of the end button is screwed into the upper end of the opening of the inner cavity in a screw-thread fit manner; and the plurality of terminals are fixed on the end button, one end of the inner side of each terminal extends into the inner cavity, and at least in a final state in a screwing process, the inner side of each terminal is correspondingly and electrically contacted with each matched electric contact part. The device at least has the advantages of small size, compact and reasonable structure and the like.

The utility model relates to the technical field of zipper detection, in particular to a zipper visual detection device which comprises a rack and an upper computer, a conveying mechanism used for conveying zippers is arranged on the rack, a visual detection mechanism used for shooting the zippers is arranged in the conveying direction of the conveying mechanism, and the visual detection mechanism is electrically connected with the upper computer. The conveying mechanism at least comprises a steering mechanism used for bending, steering and conveying the zipper, the visual detection mechanism comprises a first visual detection mechanism and a second visual detection mechanism, the first visual detection mechanism is arranged in front of the steering mechanism, and the second visual detection mechanism is arranged behind the steering mechanism. The two visual detection mechanisms are different in photographing direction and are not opposite, so that mutual interference of light sources during photographing is avoided, and visual detection errors are reduced.

The invention relates to a soil greenhouse gas emission flux detection experiment system, and belongs to the field of air pollution detection. The experimental system is used for detecting soil greenhouse gas emission flux in a potted plant and comprises a gas analysis device, a static camera bellows and a gas collection device, the static camera bellows and the gas collection device correspond to the potted plant, and the static camera bellows is used for collecting greenhouse gas emitted from the potted plant in a closed mode. A greenhouse gas sample in the static camera obscura is collected into the gas analysis device through the gas collection device, and a soil turning mechanism is arranged in the static camera obscura. The experimental system is used for performing pre-experiment on potted plants without applying soil amendments, then applying different soil amendments to the potted plants with consistent detection results, performing formal soil greenhouse gas emission flux detection experiment, and uniformly distributing the soil amendments through the soil turning mechanism, so that experimental errors are reduced, and the experimental efficiency is improved. The detection precision of the greenhouse gas emission flux of the soil under the application of different soil amendments is improved.

The device comprises a dispensing box, an emulsifying instrument and a beaker, a medicine powder blending assembly is arranged on one side of the dispensing box, an emulsifying assembly is arranged on the other side of the dispensing box, a clamping assembly is arranged in the dispensing box, and an opening is formed in the portion, between the emulsifying assembly and the medicine powder blending assembly, of the dispensing box so that the beaker can be conveniently taken and placed. The emulsifying component and the clamping component cannot move simultaneously, so that the beaker is prevented from being damaged by interference. According to the device, integrated configuration is achieved, so that manual weighing and repeated checking are not needed, batch configuration is achieved, the medicine powder proportioning is controlled through the medicine powder blending assembly, medicine powder mixing is controlled through the planetary gear assembly, knocking vibration is achieved through the vibration discharging assembly, falling of the medicine powder is guaranteed, and the medicine powder is prevented from adhering to a medicine plug; the emulsifying assembly is utilized to ensure that the emulsifying instrument is not started in the beaker moving process, mutual interference between the emulsifying instrument and the beaker and damage to the beaker are avoided, and the adjustable clamping assembly is adapted to beakers with different sizes.

The invention discloses a concentration device capable of ensuring the stability of an organic solution, and relates to the technical field of organic matter purification, the concentration device comprises a central tower, the interior of the central tower is divided into a concentration cavity and a regeneration cavity left and right, heating devices are arranged in the concentration cavity and the regeneration cavity, one side of the concentration cavity is connected with a liquid inlet pipe, and the other side of the concentration cavity is connected with a liquid outlet pipe. The bottom is connected with a liquid outlet pipe; the first cooling tower and the second cooling tower are arranged on the left side and the right side outside the central tower respectively, condensing devices are arranged in the first cooling tower and the second cooling tower, and liquid outlet pipes are connected to the bottoms of the first cooling tower and the second cooling tower; the rotating disc system comprises rotating discs which rotate on the front surface and the rear surface in the central tower respectively and penetrate through the concentration cavity and the regeneration cavity, the two rotating discs are fixedly connected through a central shaft, and a plurality of adsorption assemblies for adsorbing organic matters are distributed between the two rotating discs around the circumference of the central shaft; according to the invention, efficient concentration and stable protection of the organic solution at low temperature are realized.

The invention discloses an illumination adaptive road surface detection method and system considering small target area identification, and relates to the technical field of intelligent perception. The method comprises the following steps: receiving real-time image data, building a horizon line detection network, and inputting the image into the network to obtain an upper half region image containing environmental elements and a lower half region image containing a road surface and obstacles; the day and night state of the driving scene is judged by using the upper half area image, so that the system automatically adjusts model parameters according to illumination conditions; performing semantic segmentation by using the lower half region image, and intercepting a small-resolution image block with road surface information amount according to a semantic mask; a multi-block fusion decision network is built, blocks are input into the network, and the network can adaptively distribute weights of features of the blocks and perform fusion decision on prediction probabilities of the blocks. According to the invention, the road surface detection is expanded to an all-weather scene, the method has higher practical application value, the identification difficulty of a small target road surface area is overcome, and the accuracy of road surface detection is improved.

The invention relates to a control method for improving automobile beam steel coiling temperature setting precision, and belongs to the technical field of hot continuous rolling plate production methods. According to the technical scheme, strip steel parameters under different cooling processes are independently set, a CTC model selects a corresponding model parameter table according to laminar cooling codes, the same steel type is controlled by applying the independent model table when the cooling processes are different, and mutual interference of model setting and self-learning is avoided. The method has the beneficial effects that the effect is remarkable, the problem of large strip steel coiling temperature control deviation caused by different cooling processes is solved, and the occurrence of product degradation quality accidents caused by the transformation of the girder steel cooling process is avoided.

The invention provides a wafer carrying robot and a wafer storage device, and relates to the technical field of semiconductors. According to the wafer carrying robot, the moving mechanism of the wafer and the moving mechanism of the wafer box are creatively integrated in one mechanical arm, the robot capable of carrying the wafer and the wafer box is formed, and in other words, the wafer carrying robot can complete carrying of the wafer and carrying of the wafer box. Therefore, wafer carrying equipment and wafer box carrying equipment which are independently arranged can be replaced only by arranging the wafer carrying robot provided by the invention in the wafer preparation system, so that the integration level of the equipment in the wafer preparation system is improved, and the space occupation of the wafer preparation system is reduced. Besides, the wafer moving mechanism and the wafer box moving mechanism face different directions on the robot, and the moving mechanism corresponding to the current operation task can be rotated to the operation direction through the connecting piece, so that mutual interference of different moving mechanisms during operation is avoided, and the working stability is ensured.

The invention relates to a database operation instruction execution method and device, computer equipment, a computer readable storage medium and a computer program product. The method comprises the following steps: receiving a database operation instruction; the database operation instruction is used for executing data operation on a distributed database; the distributed database stores data in a distributed table through a plurality of fragments; splitting the database operation instruction to obtain a plurality of subtasks; and according to the dependency relationship between the sub-tasks and the task attributes corresponding to the sub-tasks, executing the sub-tasks on the fragments corresponding to the sub-tasks. By adopting the method, the operation and maintenance cost can be reduced.

The embodiment of the invention discloses a data query method based on a natural language, related equipment and a storage medium, and is used for the field of language processing. In the method, based on a business scene to which a natural language statement belongs, a target business document corresponding to the natural language statement is positioned, and a target business field in the natural language statement is split; recalling field metadata of the target business field from a document knowledge base corresponding to the target business document; generating a database statement based on the field metadata of the target business field; the field metadata recalled from the receipt knowledge base is the field metadata of the business fields of the same business receipt in the business scene, mutual interference of the metadata is effectively avoided during receipt knowledge base recall, the accuracy of receipt knowledge base recall is improved, the accuracy of database statements is improved, and the accuracy of data query is improved. The method can be applied to various business systems, such as an enterprise resource planning (ERP) system, an enterprise management system, a manpower system and the like.

The invention relates to the technical field of mixed combustion of hydrogen, and discloses a coal-fired and hydrogen mixed combustion boiler system and a combustion method for mixed combustion of hydrogen in a coal-fired boiler, the coal-fired and hydrogen mixed combustion boiler system comprises a boiler body, a pulverized coal combustion unit, a hydrogen combustion unit, a first air pipe assembly and a second air pipe assembly; a main combustion area is arranged in the boiler body; the pulverized coal combustion unit comprises a first combustion assembly, one end of the first combustion assembly is connected with the main combustion area, and the two ends of the first combustion assembly are connected with a first air pipe assembly and a second air pipe assembly correspondingly. The hydrogen combustion unit is arranged below the pulverized coal combustion unit and comprises a hydrogen pipeline, a mixing chamber and a second combustion assembly, one end of the second combustion assembly is connected with the main combustion area, the other end of the second combustion assembly is connected with the mixing chamber, and the two ends of the mixing chamber are connected with the hydrogen pipeline and the second air pipe assembly respectively.

The utility model provides a mechanical drainage shower device which comprises a water mixing device which comprises a water inlet end and a water outlet end, the water inlet end is connected with a cold water pipeline and a hot water pipeline, the water outlet end is connected with a main pipeline, and the main pipeline comprises a drainage branch and a plurality of water outlet branches. The pre-drainage device comprises a drainage valve, a water outlet valve, a drainage port, a drainage channel and a water outlet channel, the drainage channel and the water outlet channel are communicated with the drainage branch and the drainage port respectively, the drainage valve is used for controlling opening and closing of the drainage channel, and the water outlet valve is used for controlling opening and closing of the water outlet channel; the shell, the water mixing device and the pre-drainage device are both arranged in the shell, the shell is provided with a water outlet button used for controlling the water outlet valve, a pre-drainage switch and a plurality of shower switches, the pre-drainage switch and the shower switches are respectively used for controlling the water outlet branch and the water outlet branches to be opened and closed, and the water outlet branches and the water outlet are respectively connected to corresponding showers. Therefore, cold water pre-drainage of the shower device can be achieved through the mechanical switch, and the adaptability of the shower device to old users is improved.

The invention belongs to the field of automobile engine energy saving, and particularly relates to an engine energy saving device and method for producing hydrogen through ultrasonic water mist and mineral particles, the device comprises a special water storage tank, an ultrasonic water mist generator and micro hydrogen production mineral particles, and the special water storage tank is divided into an ultrasonic water mist generation chamber and a mineral particle hydrogen production chamber through a permeation partition plate; the ultrasonic water mist generator is placed at the position 3 mm-5 mm below the liquid level of the ultrasonic water mist generating chamber, and water is atomized through external power supply. Micro-hydrogen production mineral particles are placed at the bottom of the mineral particle hydrogen production chamber and react with water to generate hydrogen, part of hydrogen is dissolved in water, and part of hydrogen is stored in the gas storage chamber above the liquid level. An air outlet is formed in the top of the special water storage tank and connected with an engine air inlet pipe, water mist and hydrogen enter an air cylinder along with engine suction to participate in acting, and therefore the redundant fuel injection amount is eliminated, and heat transfer loss in the cylinder is reduced. The heat efficiency of the automobile engine is improved, knocking is restrained, the incomplete combustion phenomenon is reduced, and then fuel consumption and harmful gas emission are reduced.

The invention provides a video memory management method and device for large language model reasoning, a medium and a product. The method and device are applied to service equipment deployed with a large language model. The method comprises the following steps: allocating physical video memory resources on the service equipment so as to respectively map the physical video memory resources to a first video memory resource pool of which a cache object is a key value cache and a second video memory resource pool of which a cache object is an intermediate activation value; and aiming at the reasoning task submitted to the large language model, if it is judged that idle video memory resources of any one of the first video memory resource pool and the second video memory resource pool are not enough to cache a corresponding cache object for the reasoning task, sending the cache object to the first video memory resource pool and the second video memory resource pool, and if not, temporarily borrowing at least a part of idle video memory resources of another video memory resource pool to any video memory resource pool.

The invention relates to the technical field of semiconductor packaging, in particular to a hybrid packaging structure and method of a photoelectric chip and a testing method and system of the photoelectric chip. The packaging structure comprises a first substrate; a reinforced connecting layer is arranged on the upper surface of the first substrate; the reinforced connection layer comprises a silicon adapter plate, a first reinforced layer and a second reinforced layer are arranged on the silicon adapter plate, and an electronic chip is arranged on the upper surface of the second reinforced layer; the third reinforcing layer at least can cover the exposed surface area of the first reinforcing layer, the exposed surface area of the second reinforcing layer and the side surface of the electronic chip; and a photon chip is arranged on the upper surface of the third reinforcing layer corresponding to the first reinforcing layer. The hybrid packaging scheme realized based on the reinforced connection layer can be applied to wafer-level batch processing, so that the compatibility with an advanced packaging process of an electronic chip and large-scale mass production can be realized.

The invention relates to the technical field of eutectic equipment, in particular to an elastic suction nozzle assembly, eutectic equipment and an eutectic method. The elastic suction nozzle assembly comprises a base, at least two suction nozzles arranged on the base and elastic assemblies arranged corresponding to the suction nozzles. The suction nozzle comprises a connecting section and a working section which are connected; two ends of the elastic component are connected with the base and the connecting section of the corresponding suction nozzle; the base is provided with a through avoiding channel, the working section is movably located in the avoiding channel, and the working section penetrates through the avoiding channel from one side of the base and is exposed out of the other side of the base. The working section is provided with a vacuum air path and a perspective window arranged corresponding to the vacuum air path; external light can pass through the perspective window and the vacuum air path in sequence and then penetrate out of the adsorption opening of the suction nozzle. According to the scheme, multiple chips can be mounted and elastically abutted at the same time, the positions of the chips are allowed to be obtained in the mounting process, so that the chips are adjusted in real time, and efficient mounting and real-time calibration capacity of the multiple chips are achieved.

The invention discloses a multi-task electromagnetic model based on a hybrid expert network, and belongs to a wireless communication technology. The model comprises a preprocessing module, a feature extraction module, a task output module and a pre-training-fine tuning learning strategy. The preprocessing module carries out standardization processing on the multi-source electromagnetic signals; the feature extraction module is based on a Transform structure, introduces a hybrid expert network to replace part of a traditional feedforward neural network, and dynamically selects an expert sub-network through a task specific routing mechanism; the task output module configures a special structure according to different task targets; in the pre-training stage, a mask auto-encoder is used for pre-training large-scale label-free data, and a downstream task is subjected to full-amount fine adjustment through small-scale label data. According to the method, multi-task collaborative learning and differential expression are realized, and the recognition performance, robustness and processing efficiency of the model in a complex electromagnetic environment are improved.

The invention relates to the technical field of connectors, and particularly discloses a connector with a shielding function, which comprises a shell and a circuit board accommodated in the shell, the circuit board is provided with conductive welding spots and a grounding part, the circuit board is connected with an external cable through a conductive group, the circuit board is provided with a housing used for separating the plurality of conductive welding spots, the housing is provided with a shielding assembly used for covering the conductive welding spots, and the shielding assembly comprises a cover body made of a magnetic isolation material. The arrangement of the housing can effectively separate and protect a plurality of conductive welding spots on the circuit board, prevents short circuit or mutual interference among the conductive welding spots, improves the reliability and stability of the circuit board, and the shielding assembly can further enhance the protection of the conductive welding spots, reduces the interference of an external electromagnetic field on the conductive welding spots through the shielding effect, and improves the reliability of the circuit board. And meanwhile, an electromagnetic field generated by the conductive welding spot is prevented from influencing the external environment.

The invention relates to the technical field of oil field well cementation and well completion processes, in particular to a reverse filling and well cementation integrated tubular column and an implementation method.The reverse filling and well cementation integrated tubular column comprises an outer-layer tubular column body and an inner-layer tubular column body, and the outer-layer tubular column body comprises a reverse filling sliding sleeve, a screen pipe, a sealing cylinder, an open hole packer, a positioning coupling, a well cementation sliding sleeve and a sleeve which are sequentially and fixedly connected from bottom to top; the inner-layer pipe column comprises a reverse filling service tool, a washing pipe, a rotary positioning tool, a well cementation service tool, a bump pressure valve and a drill rod which are fixedly connected in sequence from bottom to top, the sealing cylinder is used for setting an open hole packer, the positioning coupling is used for positioning the well cementation service tool, the rotary positioning tool comprises a positioning position and a passing position, and the rotary positioning tool comprises a positioning hole and a passing hole. The bumping pressure valve is used for completing cementing bumping pressure and circulating cement washing work, one-time pipe column sand prevention and well cementation operation is achieved through cooperation of different positions of the inner pipe column and the outer pipe column, the operation time and cost are effectively saved, sand prevention is conducted firstly, then well cementation is conducted, and cement is effectively prevented from polluting a reservoir stratum.

The invention provides a wet clutch system with a mechanical locking function. The wet clutch system comprises a hydraulic oil way, an oil way switching mechanism and an intermediate shaft. An input hub, an output hub and a large piston are sequentially arranged on the intermediate shaft, and the input hub is used for being connected with a differential shell to transmit torque; the output hub is sleeved with a clutch, the large piston is used for pushing a friction plate of the clutch to be pressed tightly, and then the torque of the input hub is transmitted to the output hub and the intermediate shaft. The input hub is sleeved with a mechanical locking mechanism and a small piston, the small piston is used for pushing the mechanical locking mechanism to be mechanically locked with the output hub, and then the torque of the input hub is transmitted to the output hub and the intermediate shaft; the oil way switching mechanism is used for switching a hydraulic oil way into the large piston or the small piston. The large torque of the differential shell can be transmitted to the output hub and the intermediate shaft through the mechanical locking mechanism, the strong cross-country requirement of customers can be met, and the clutch is protected.

The invention discloses a negative electrode powder recovery method which comprises the following steps: S1, carrying out electrified crushing and drying on a waste lithium battery, and then carrying out winnowing to remove a shell and a diaphragm to obtain a mixture; s2, adding the mixture into water for soaking, carrying out solid-liquid separation, drying and screening to obtain negative electrode powder, and then carrying out color sorting separation on a negative electrode current collector and a positive electrode plate; s3, performing heat treatment on the positive plate, stripping the positive powder, and then screening and separating the positive powder and the positive current collector; and S4, the negative electrode powder obtained in S2 is taken and subjected to acid pickling, water washing and calcination in sequence, then graphene and carbon nanotubes are added for ball milling, and modified graphite is obtained. According to the method, the negative electrode powder, the negative electrode current collector, the positive electrode powder and the positive electrode current collector can be effectively separated, the obtained negative electrode powder has few impurities, the impurities can be removed and the layered structure of graphite can be structured only through simple acid pickling and calcination, so that direct ball milling treatment with graphene and carbon nanotubes is facilitated, and the electrochemical performance of the graphite is improved.

The invention relates to the field of comparative learning, in particular to a text data processing method and device and a text data detection method and device.The method comprises the steps that artificial texts in multiple fields are input into a large model tool, corresponding AIGC texts are obtained according to heuristic rules, and detection enhancement text pairs are formed; and through a multi-level encoder network and a corresponding multi-level auxiliary encoding network, respectively encoding texts in the detection enhanced text pair, and using multi-level knowledge protection to compare a learning loss function to optimize an encoder model. According to the method, the encoder model can simultaneously carry out high-precision text AIGC detection without field semantic confusion on text data of multiple fields, semantic distribution between an artificial text and an AIGC text can be pulled open under the condition that subtle changes of original knowledge distribution are kept, and plug-in type detection field expansion and detection precision enhancement are achieved.

The invention discloses a power-on self-starting reverse-flowing self-discharging system for a frequency converter, and the system is characterized in that a flyback power module outputs + 15V control voltage to a DC / AC controller and a sequential logic control circuit after three-phase alternating current is powered on; after the DC / AC controller is powered on by the flyback power supply module, a switching tube in the DC / AC power module is controlled to be in a closed state; the sequential logic control circuit is electrified by the flyback power supply module and then controls a thyristor in the pre-charging / discharging circuit to be conducted; the AC / DC rectifier module converts three-phase alternating current into direct current, is connected with the pre-charging / discharging circuit and charges an energy storage capacitor in the pre-charging / discharging circuit; the DC / AC power module inputs backward flowing current to an energy storage capacitor in the pre-charging / discharging circuit; on one hand, the pre-charging / discharging circuit rectifies direct current input by the AC / DC rectifier module and then pre-charges an energy storage capacitor in the circuit, and on the other hand, the pre-charging / discharging circuit receives backward flowing current input by the DC / AC power module. According to the invention, the generation of surge current can be inhibited, and the power-on time sequence of first power-on control power and then power-on power power can be realized at the same time.