239results about How to "Guarantee high efficiency" patented technology

The invention discloses a power grid toughness evaluation method and system, and the method comprises the steps: inputting the collected monitoring index data and environment index data of a target regional power grid into a pre-trained power grid toughness evaluation model for evaluation and recognition, so as to obtain a toughness evaluation result; the monitoring index data comprises voltage data, current data, harmonic data and power data, and the environment index data comprises temperature and humidity data, line loss data and frequency data; wherein the construction process of the power grid toughness evaluation model comprises the step of respectively training a data expansion process, a feature extraction model, a feature dimension reduction model and a classifier model in the power grid toughness evaluation model, so as to obtain the power grid toughness evaluation model. The evaluation accuracy of the evaluation model is improved by optimizing the training process of the model.

The invention discloses a mining robot path planning method based on artificial intelligence, relates to the technical field of artificial intelligence, and aims at solving the problem that the path of a mining robot can be planned by introducing an environment perception coefficient Rfx, an environment change coefficient Envc and a dynamic obstacle monitoring mechanism and combining real-time data processing of a dynamic obstacle total number Zzs, an obstacle distance Zjj, an obstacle relative speed Zsd and a robot steering radius Zbj. The problem that the traditional path planning cannot adapt to the sudden change of the mine environment is effectively solved; an obstacle avoidance path is generated by dynamically evaluating an environment change coefficient Envc, so that the safety and adaptability of path planning are improved; meanwhile, the emergency degree coefficient Urg of the assessment task is calculated, a path adjustment scheme is preferentially generated, and the emergency task response efficiency is improved; besides, whether a path optimization mode is started or not is judged through calculation and evaluation of a path energy consumption evaluation value Nex, it is guaranteed that tasks are completed smoothly, and the energy consumption risk is reduced; and the dynamic adaptability, the task allocation efficiency and the energy consumption management capability of the path planning of the mining robot are integrally improved.

The invention discloses a coal mine safety early warning system and method based on a large model, and relates to the technical field of coal mine safety early warning, and the system comprises a coal mine safety early warning special large model, a safety monitoring module, a data processing module, and a safety early warning tool. The coal mine safety early warning special large model is constructed based on target data and related knowledge. A large model technology is applied to coal mine safety early warning business, and a coal mine safety early warning large model is constructed through methods of model training, knowledge base construction, knowledge base evaluation and the like on the basis of powerful semantic understanding, logical reasoning and decision planning capabilities of a general large model. A special large model capable of recognizing various safety risk accidents of a coal mine, judging potential risks and hidden dangers and automatically generating early warning information is obtained, the reminding quality and efficiency of safety risk early warning services are effectively improved, safety and efficiency of coal mine production are guaranteed, and the multi-dimensional and expert-perspective safety early warning analysis and reminding functions are achieved.

The invention provides a building surveying and mapping method based on an unmanned aerial vehicle, and the method comprises the steps: integrating data, constructing an intelligent algorithm server, planning a flight path, and distributing tasks; receiving and confirming flight tasks and path information, and flying to respective initial surveying and mapping points; flying along an intelligent algorithm dynamic optimization path, and synchronously collecting building data by a multi-source heterogeneous sensor according to preset parameters; encrypting and transmitting the processed surveying and mapping data to the block chain network, and recording a data hash value, a timestamp and an unmanned aerial vehicle identifier; generating a high-precision building three-dimensional model and a material distribution report; and completing the task, landing according to the plan, returning task details, and comprehensively checking and maintaining the unmanned aerial vehicle and equipment. An intelligent algorithm server is constructed by integrating various types of information, a flight path and a distribution task can be scientifically planned, multiple unmanned aerial vehicles cooperatively work and are linked with a data processing center and a block chain network, and a multi-source heterogeneous sensor collects data and performs real-time fusion processing and monitoring, so that the accuracy and efficiency of the data are guaranteed; and data security and traceability are ensured by using block chain storage, and the precision, efficiency, security and reliability of building surveying and mapping are greatly improved.

The invention discloses a homomorphic encryption-based quantum security key management method and system, and belongs to the technical field of data processing, and the method comprises the following steps: obtaining and evaluating equipment encryption feature parameters and communication environment parameters, and obtaining a quantum encryption demand analysis result; generating a quantum security key and a dynamic storage index; obtaining a performance indication parameter of the quantum security key, performing evaluation to obtain a quantum security key transmission performance demand index, synchronously obtaining a transmission quality parameter of each quantum security key transmission channel, and performing analysis to obtain a key transmission channel corresponding to the quantum security key; based on the dynamic storage index and a key transmission channel corresponding to the quantum security key, the quantum security key is stored to a central processing unit, and a quantum security key hiding risk index is evaluated, so that whether quantum security key updating management needs to be carried out or not is judged; the problem that key generation and storage strategies cannot be dynamically adjusted according to specific encryption requirements in the prior art is solved.

The invention discloses a code version management method based on multi-person collaboration, belongs to the technical field of software development, and in the code version management method based on the GIT distributed version control system, efficient work is guaranteed through modes of code submission, combined submission, code combination and the like. According to an existing cooperation mode, in the development process of one iteration cycle, developers can submit codes for multiple times, and after iteration development is completed through cooperation of multiple persons, many submission records appear, and therefore the code submission records are disordered. Through the technology, after each developer completes the respective task, the submission records are combined into one, so that the readability of submitted information is greatly improved. By means of code submission, merging submission, code merging and the like, high efficiency of work is guaranteed, the code submission management process is standardized, many benefits are brought to software development teams, and the method is an important means for improving software development efficiency and quality.

The invention provides a mine emergency rescue command system, and aims to solve the problems of untimely emergency response, incomplete information, low command and dispatch efficiency and the like in the prior art. The system comprises a mine environment data acquisition module, a wireless transmission module, a data processing module, a risk early warning module, a command and dispatch module and a rescue auxiliary module. The environment data acquisition module acquires gas concentration, temperature and humidity, dust concentration and personnel position information in a mine in real time through a sensor; the wireless transmission module transmits the data to a ground command center; the data processing module analyzes and generates a comprehensive safety score by using an algorithm; when the danger value exceeds the threshold value, the risk early warning module automatically triggers an alarm; and the commanding and dispatching module remotely dispatches rescue workers according to the real-time information, and generates an optimal rescue path by using the rescue auxiliary module. The system has real-time performance, intellectualization, information integration and remote command capability, and can quickly respond to mine accidents, improve rescue efficiency and reduce accident loss.

The utility model discloses a pressure regulating silencer with a deslagging function, which comprises a silencing pipe, a pressure regulating sleeve sleeved on the silencing pipe and a silencing outer sleeve sleeved outside the pressure regulating sleeve, a silencing chamber is formed between the silencing pipe and the silencing outer sleeve, a deslagging silencing hole communicated with the silencing chamber is arranged on the silencing pipe, and a deslagging hole is arranged on the silencing outer sleeve. The residue discharging holes are formed in the silencing outer sleeve, so that independent residue discharging paths are formed among the residue discharging silencing holes in the silencing pipe, the silencing chamber between the silencing pipe and the silencing outer sleeve and the residue discharging holes in the silencing outer sleeve, and residues do not need to enter the nail fixing device any more. The nail fixing device effectively prevents the residues from entering the nail fixing device to cause corrosion, jamming and other damage to key components (such as a firing pin assembly), greatly prolongs the service life of related equipment components, reduces the maintenance frequency and cost caused by component damage, does not need to disassemble and assemble the nail fixing device main body to clean the residues in the nail fixing device, and improves the working efficiency. And the overall reliability and stability of the equipment are improved.

The invention discloses a relay satellite position optimization method and system based on satellite covert communication, and the method comprises the following steps: (1) constructing a covert communication model in a satellite covert communication system, the covert communication model comprises a relay satellite, a transmitting base station which is located on the ground and transmits signals to the relay satellite, a receiving base station which is located on the ground and receives the signals through the relay satellite and transmits interference signals to interfere with the detection satellite, and a monitoring satellite which monitors the signals of the relay satellite and transmits interference signals to interfere with the receiving base station. (2) constructing a minimum total error detection probability calculation model of a monitoring satellite in the satellite covert communication system; (3) establishing a relay satellite position optimization model which takes the maximum covert communication rate as a target and takes the condition that the minimum total error detection probability of the monitoring satellite is greater than or equal to a preset threshold value as a constraint condition; and (4) solving the relay satellite position optimization model to obtain the optimal position of the relay satellite. According to the invention, the concealment and the communication rate can be improved.

The invention relates to the technical field of environmental protection, in particular to a sludge incineration flue gas efficient purification system which comprises a pretreatment module, a dynamic ion separation module, an acid gas neutralization module, a heavy metal adsorption module, an acid-gold interaction purification module, a deep oxidation module and an intelligent control module. Wherein the pretreatment module is used for receiving initial flue gas flow; the dynamic ion separation module is used for primarily separating heavy metal ions; the acid gas neutralization module is used for stabilizing emission of acid gas; the heavy metal adsorption module is used for accurately adsorbing heavy metal ions; the acid-gold interactive purification module is used for treating composite pollutants; and the intelligent control module is used for automatically adjusting module operation parameters. According to the sludge incineration flue gas treatment system, by integrating an efficient purification technology and intelligent control, comprehensive removal and stable up-to-standard emission of various pollutants in sludge incineration flue gas are achieved, and the response speed, the purification efficiency and the energy-saving effect of the system are improved.

The invention provides a mine fire data acquisition and monitoring system, which comprises a data acquisition module, a data transmission module, a central processing module, a monitoring and alarming module and a power supply module, and is characterized in that the data acquisition module is used for acquiring mine environment parameters; the data transmission module is used for transmitting mine environment parameters; the central processing module performs fire risk assessment and trend prediction based on a random forest algorithm; the monitoring and alarming module is used for monitoring mine environment parameters in real time and giving an alarm in time when a fire risk assessment result triggers early warning; and the power supply module is used for providing stable power supply for the system. According to the mine fire data acquisition and monitoring system, mine environment data is acquired through the sensor network, fire risk assessment is performed by using a random forest algorithm, early warning is given out in time through the monitoring and alarm module, and intelligent monitoring and emergency response of mine fire are realized.

The invention discloses a processing method and system for power grid multi-cascade faults, and relates to the field of power system fault processing, and the processing method for the power grid multi-cascade faults comprises the steps: constructing a multi-cascade fault rapid judgment knowledge graph; fault event information is obtained through the comprehensive intelligent alarm information, and the real-time operation state of the power grid is monitored; identifying a fault type, and obtaining equipment associated information; querying the fault plan knowledge graph, matching the fault disposal process plan, and establishing a fault disposal group for outputting fault disposal process operation prompts and information intercommunication; judging whether an out-of-limit risk exists or not; an adjustment strategy is adopted for existing out-of-limit risks until all out-of-limit risks are eliminated; and analyzing actual conditions to carry out equipment power restoration and state recovery operation. According to the method, the problems that fault handling mainly depends on artificial experience and the intelligent level is low are solved, meanwhile, the power grid multi-cascade fault handling efficiency is improved, and the workload of regulation and control personnel is relieved.

The invention provides an electronic file evidence storage method and device and an electronic file verification method and device, and relates to the technical field of computers. The electronic file evidence storage method comprises the steps that a first electronic file needing to be stored is acquired; generating an anti-counterfeiting image based on the first electronic file, wherein the anti-counterfeiting image comprises a unique identifier and traceability information of the first electronic file; embedding the anti-counterfeiting image into the first electronic file to obtain a second electronic file; performing hash processing on the second electronic file to obtain a first hash value; and based on a preset first asymmetric encryption private key, performing encryption processing on the first hash value to obtain an electronic signature, and embedding the electronic signature into a second electronic file to obtain an evidence storage file. According to the electronic file evidence storage method, the electronic file verification method and the electronic file verification device, the authenticity and the integrity of the electronic file can be verified, the strong anti-fake capability is achieved, and therefore the high efficiency, the safety and the credibility of the electronic file are guaranteed.

The invention provides a concentrator system data remote backup and recovery method, which comprises the following steps: loading all concentrators in the same network as nodes into a distributed network based on a distributed framework, each concentrator having a unique identity label; during the operation period of each concentrator, compressing and packaging key data of the concentrator; each node concentrator makes a decision by using a distributed algorithm, and distributes at least part of key data to at least part of nodes to realize redundant backup; when any concentrator in the distributed network is damaged or needs to be replaced, the replacement device asks for backup data belonging to the concentrator to be replaced from other concentrator nodes in the network, unpacking and decompressing are carried out, and data recovery is completed. According to the invention, even if part of concentrators are completely damaged, data recovery can still be carried out, and extra special equipment does not need to be additionally arranged to carry out remote backup of data.

A high-efficiency continuous rotating hydraulic joint and a control system comprise a swash plate mechanism used for driving the joint to rotate, the swash plate mechanism comprises a swash plate and a power output shaft, and the swash plate is driven by a plurality of multi-cavity hydraulic cylinders to achieve forward and reverse rotation of the power output shaft. The multiple multi-cavity hydraulic cylinders are evenly distributed below the swash plate with the power output shaft as the center, composite piston rods of the multi-cavity hydraulic cylinders and the power output shaft are distributed in parallel, the jacking ends of the composite piston rods are connected with ball bearing seats through ball bearings, and the jacking ends of the composite piston rods are assembled on the swash plate in a sliding mode through the ball bearing seats. The control system comprises an inner ring control system and an outer ring control system, different load matching control methods are adopted corresponding to different rotation angle positions of the power output shaft, fine adjustment of the proportional throttle valve is combined, high-precision constant torque control of the device in a continuous rotation motion state can be achieved, and the device is high in reliability and high in reliability. And high-precision variable-torque control can be realized to match the variable load torque.

The invention discloses a task scheduling method and device for a smart workshop, and relates to the technical field of task scheduling. Power consumption data of a target production line are acquired, and a power fluctuation abnormal value of the target production line is calculated; obtaining the production timestamps of the products on the target production line, calculating the production time deviation of the target production line, and determining the fault probability of the target production line in combination with the production time deviation and the power fluctuation abnormal value; marking the target production line as a first production line if the fault probability is greater than a preset fault threshold, otherwise, marking the target production line as a second production line; distributing the current remaining production tasks of each first production line in the workshop to each second production line; by means of the mode, production line faults can be found in time, bad production tasks can be stopped, fault influences are reduced, and product quality is ensured; and meanwhile, the unfinished production tasks are redistributed to other normal production lines, so that the production speed is ensured, the overall fault is minimized, and the workshop production task scheduling efficiency is improved.

The invention discloses an intelligent control method and system for waterproof material production and processing, relates to the technical field of automatic control, and realizes comprehensive monitoring and regulation of a waterproof material production process, firstly, through real-time data acquisition of an industrial camera and a sensor group, construction of a high-dimensional feature vector Vfeed (t) and application of a classification model, a high-dimensional feature vector Vfeed (t) is obtained; and the defects on the surface of the material can be accurately identified and classified. And then, by generating a feedback control signal Cctrl (Vfeed, S, P), the system can adjust the production speed S and the pressure P in time, and dynamically regulate and control the detected defective material. Moreover, the system ensures the adjustment effectiveness in the production process through an iterative verification mechanism, and avoids the limitations, including low efficiency, misjudgment and missing detection, of the traditional manual inspection and optical detection methods. The production efficiency and the material quality are improved, and the defect rate and the rework rate are effectively reduced.

The invention discloses a method for checking distributed supporting stand columns between a cylindrical FPSO main deck and a process deck. The method for checking the distributed supporting stand columns between the cylindrical FPSO main deck and the process deck comprises the following checking methods that S1, a finite element calculation software model is established; s2, applying a load on the finite element model; s3, module supports are established and arranged, and stand columns are arranged between the main deck and the process deck to serve as supports; s4, pre-analyzing the finite element model; s5, performing finite element model optimization analysis; s6, the screened stand columns are subjected to refining treatment; and S7, performing result analysis on the model, and returning to S6 for adjustment if the overall structural strength meets the requirements of operation, extreme and cabin breaking working conditions, the structural fatigue exceeds the specified service life and the local part does not meet the requirements. According to the checking method for the distributed supporting stand columns between the cylindrical FPSO main deck and the process deck, the calculation result is more accurate, the professional iteration workload of upstream and downstream is reduced, the design period is shortened, and the efficiency is improved.

The invention relates to a disk array configuration method and device, computer equipment and a storage medium. The method is applied to a computer device running a bare metal service, and comprises the steps that a grouping creation instruction is received, the grouping creation instruction comprises grouping demand information, and the grouping demand information comprises the number of groups, a target RAID card identifier corresponding to each group and demand disk information; determining grouping configuration information according to the grouping demand information and a pre-stored corresponding relationship; wherein the corresponding relationship is used for identifying the association between each RAID card identifier in the bare metal server and the actual disk information; the grouping configuration information comprises a target RAID card identifier corresponding to each group and actual disk information which corresponds to the target RAID card identifier and meets the required disk information; and sending the grouping configuration information to the bare metal server, wherein the grouping configuration information is used for executing the RAID operation on the bare metal server.

The invention provides a method and a structure for renovating cavity diseases behind existing railway tunnel linings. The existing railway tunnel lining back cavity disease treatment method comprises the step of filling and reinforcing the low-elasticity light grouting material. The low-elasticity light grouting material is adopted to fill and reinforce the cavity after the tunnel lining, and the low-elasticity light grouting material has the excellent performance characteristics of quick setting, light weight, low-elasticity damping property, water resistance and the like, so that the filling can be completed in a short skylight time; the impact load of part of falling blocks of the surrounding rock can be absorbed or dispersed, the secondary load of the tunnel lining is greatly reduced, a certain waterproof effect is generated on leakage water of the surrounding rock, the back cavity damage of the tunnel lining treated through the method is remarkably improved, and the structural stability of the tunnel lining is greatly improved.

The invention relates to the technical field of carbon management, in particular to a carbon metering terminal based on edge intelligent collaboration, and the terminal comprises a model partition updating module which constructs a carbon metering model based on carbon emission data collected in real time according to the carbon emission data, and generates carbon metering information after partition optimization by adjusting and dividing the carbon metering model. According to the invention, through real-time acquisition and partition optimization of the carbon emission data, in combination with an extraction mode of time sequence features and statistical features, the precision and efficiency of carbon emission prediction are significantly enhanced. In a data processing process, abnormal data and repetitive data are effectively eliminated by establishing a filtering threshold range, so that the data quality is improved, and the interference of low-efficiency data on subsequent analysis is avoided. In collaborative optimization of the edge nodes, communication delay and resource waste among the nodes are reduced by means of dynamic weight adjustment and path optimization, and the transmission efficiency and the collaborative effect are improved.

The invention discloses a self-adaptive drilling fluid intelligent blending device and a use method thereof. Belongs to the technical field of shale gas exploitation auxiliary devices. The system comprises an original drilling fluid circulating system; the system further comprises a sensor group, a controller, a blending execution group and a drilling fluid circulation system. The sensor group comprises a density sensor, a viscosity sensor, a pH value sensor and a temperature sensor; the controller comprises a digital-to-analog / analog-to-digital conversion module; an algorithm module and a communication module; the blending execution group comprises a metering pump, a stirring device, a feeding pipeline and a valve; according to the invention, various problems existing in the process of blending the drilling fluid are effectively solved.

The invention relates to the field of municipal engineering construction, in particular to gas pipeline construction equipment for municipal engineering. Comprising a conveying mechanism, a supporting and fixing mechanism and a groove cutting mechanism, the supporting and fixing mechanism and the groove cutting mechanism are sequentially arranged in the conveying direction of the conveying mechanism, the groove cutting mechanism comprises a fixed ring, a rotating ring and cutters, the rotating ring is coaxially and rotatably arranged on the fixed ring, and the cutters are evenly distributed on the rotating ring in the circumferential direction of the rotating ring. Each cutter can move in the radial direction of the cutter, the extrusion ring can move in the axis direction of the extrusion ring, a plurality of supporting pieces capable of moving in the radial direction are evenly distributed on the inner side of the extrusion ring in the circumferential direction of the extrusion ring, and an inner supporting driver is arranged on the extrusion ring. The rubber layer on the extrusion ring is elastically attached to the end face of the gas pipeline removal end, a uniform limiting contact face is formed, the stability of axial limiting is improved, the gas pipeline is internally supported through cooperation with the multiple supporting rollers, and the stability of radial limiting is improved.

The invention provides an energy pile structure based on shaping phase change material backfilling and an operation method of the energy pile structure. The energy pile structure sequentially comprises a pile core heat injection base material A, a heat removal heat shield base material B and a concrete shell from inside to outside. A heat injection pipe is arranged in the pile core heat injection base material A, and a heat removal pipe is arranged in the heat removal heat shield base material B; the heat extraction heat shield base material B is internally connected with the pile core heat injection base material A, and is externally connected with the concrete shell; the pile core heat injection base material A and the heat extraction heat shield base material B are both made of shaped phase change materials; and the heat removal heat shield base material B adopts asymptotic phase change, so that the problems that underground cold and heat loads are unbalanced, a ground temperature field is unbalanced, inter-pile heat interference is serious, underground heat transfer efficiency is low, and the heat and cold supply capacity and energy efficiency of a system are not expected and are reduced year by year when an existing shallow soil source heat pump energy pile supplies heat and cold are solved.

The invention discloses a particle fluid index on-line measurement method in a material drum type disassembling and crushing process, which comprises the following steps of: acquiring an image of the disassembling and crushing process on line without shutdown in an operation process of drum type disassembling and crushing equipment by installing a camera; a particle area image is extracted in the step S2, the particle area image is divided into a plurality of particle area units in the step S3, and the contour data of the particle area units are obtained; the method comprises the following steps: extracting particle region images of two continuous frames of images in the disassembling and crushing process in the step S2, obtaining a dense displacement vector field by using a pyramid structure Siamese network model in the step S5, and then performing calculation. The particle size distribution data of the rotating drum of the rotating drum type disassembling and crushing equipment at the shooting moment of the disassembling and crushing process images and the particle flow velocity field of the rotating drum of the rotating drum type disassembling and crushing equipment at the shooting moment of two continuous frames of disassembling and crushing process images are obtained through online calculation, and the method has the advantages of being high in precision and speed.

The invention relates to the technical field of agricultural mechanical equipment, in particular to cotton strip tillage narrow film tape laying sowing equipment and a planting method. A rotary tillage channel is arranged on a rack of the cotton strip tillage narrow film tape laying seeding equipment. And a passage for cotton vertical stalks to pass through is arranged between every two adjacent rotary tillage passages. The walking mechanism is arranged at an inlet of the rotary tillage channel and supports the machine frame. The rotary tillage assembly is installed in the rotary tillage channel and conducts rotary tillage on the ground on the two sides of the cotton vertical stalks to form planting belts. The film laying assembly is arranged at an outlet of the rotary tillage channel and used for conducting film laying operation on the ground subjected to rotary tillage. And the film mulching assemblies are in one-to-one correspondence with the rotary tillage channels. The tape laying assembly is located between the rotary tillage channel and the film laying assembly and used for pre-burying a drip irrigation tape to the ground before film laying operation. The dibbler is used for sowing on the planting belt after film mulching. According to the cotton strip ploughing narrow film belt laying sowing equipment, under the condition that crop vertical stalks are reserved between rows, the film laying operation is smoothly implemented, the film laying cost is reduced, and the film laying operation efficiency is improved.

The invention discloses a monorail crane rail linkage car arrester, and relates to the technical field of mining safety auxiliary transportation equipment, the monorail crane rail linkage car arrester comprises a supporting frame, a monorail hanger rail is transversely installed at the center of the top of an inner cavity of the supporting frame, and a rotation adjusting mechanism is arranged on the right side of the monorail hanger rail; the rotation adjusting mechanism comprises a shell sleeve, a servo motor, a limiting disc, a shaft rod, a shaft seat, a driving rotating shaft, a limiting rod, a connecting plate and a damping spring. According to the track linkage car arrester of the monorail crane, through the linkage car arresting mechanism, the monorail crane can be effectively prevented from passing when the first air door and the second air door are not opened or not completely opened, and the first air door and the second air door are effectively prevented from being crashed and collided; the rotation adjusting mechanism can accurately carry out adjusting operation according to different working requirements such as load changes, and therefore it is ensured that the whole equipment system keeps stable operation under different working conditions.

The invention provides a working face mine pressure prediction method based on domain generalization small sample learning and a model construction method thereof, and belongs to the technical field of signal processing. Constructing a small sample data set, and designing an efficient feature extraction network to perform feature extraction on the preprocessed mine pressure data; based on a feature extraction network, a generative adversarial network model for generators and discriminators of different domains is designed. Meanwhile, in domain generalization problem processing of source domain data and target domain data, an attention weighted mine pressure prediction network with a long and short-term memory network coding module, a guiding attention weighting module and a soft attention weighting module is constructed by utilizing the instructive coding function of a generator. The problem that the feature dependency relationship in the training data cannot be captured on the premise of small samples is further solved. According to the method, the prediction robustness can be improved, a new solution is provided for the complexity of mine pressure display of the coal mine working face, and the continuity and reliability of coal mine safety production are ensured.

A robot navigation method based on importance gaze characterization and obstacle Gaussian constraint comprises the steps that original point cloud data information of a robot is collected, point cloud data Ot at the current moment is obtained, and the robot collects the moment T and reserves a historical point cloud data sequence O within the moment T; inputting the obtained point cloud data sequence O into an importance gaze representation module, representing a historical depth map sequence Or, inputting Or into a decision network delta of reinforcement learning, and outputting a navigation action at the current moment; inputting O into a Gaussian obstacle constraint module, and judging the safety of the current state through a predefined value interval of a safety set h (O); according to the invention, the security problem of an end-to-end network can be solved, and finally efficient and safe autonomous navigation of the mobile robot in an unfamiliar dynamic scene is realized.

The utility model discloses an acetone sample adding and spraying device which comprises a nozzle, a sample groove device and an acetone sample adding device, the sample groove device comprises a sample groove body, a sample cup, a slide groove and a slide sensor; the acetone sample adding device comprises an acetone sample storage bottle, a sample adding device, a heating device, a feeding pipe and a conveying pipe; the input end of the sample adding device is communicated with the acetone sample storage bottle through a feeding pipe, and the output end of the sample adding device is communicated with the heating device through a conveying pipe; a nozzle is arranged at the tail end of the heating device; the acetone sample adding and spraying device provided by the utility model has high efficiency and stability of acetone evaporation and spraying treatment, and ensures the operation safety of laboratories and personnel.