36results about How to "Reasonable idea" patented technology

The invention relates to the technical field of geological disaster risk evaluation research, in particular to a collapse geological disaster risk evaluation method and system of a transformer substation structure damage model. The collapsed dangerous rock mass is investigated in detail, the stability is evaluated through a stereographic projection method, and the instability probability is calculated through a Monte Carlo method; fLAC3D and PFC3D are coupled to simulate a collapse dynamic process, and risk evaluation is completed in combination with ArcGIS; establishing a transformer substation electrical facility physical model and a structural damage model; establishing a vulnerability evaluation model based on the collapse rockfall impact strength and the electric facility structure resistance; and performing risk evaluation by adopting a matrix analysis method, and estimating economic loss. The invention further comprises corresponding system implementation. According to the method, by combining geological survey, numerical simulation and structural analysis, comprehensive quantitative evaluation of the collapse disaster risk of the transformer substation is achieved, the accuracy, reliability and pertinence of evaluation are improved, and a scientific basis is provided for disaster prevention and reduction of the transformer substation in the mountainous area.

The invention provides a wide-area multi-level soil attribute fine mapping method based on spatial downscaling. According to the method, long-time-sequence optical data information and ground elevation information are collected through a satellite sensor, long-time-sequence temperature and rainfall data are collected through a meteorological station, and spatial position auxiliary data extracted from the long-time-sequence temperature and rainfall data are combined with existing national-level soil grid database data to construct a high-quality data set; the method is used for training a random forest model constructed based on an integrated learning technology so as to realize high-precision and high-reliability refined soil attribute mapping under a wide-area scale. The method is reasonable in conception, high-precision and high-reliability refined soil attribute mapping under a wide-area scale is realized, a specific region multi-level soil attribute database with higher resolution can be constructed, and the method is suitable for popularization and application.

The utility model discloses an MVR (mechanical vapor recompression) concentrated solution treatment device, which belongs to the field of wastewater treatment and comprises a first coagulating sedimentation device, a second persulfate advanced oxidation device, a second persulfate adding device for adding persulfate into the second persulfate adding device, a third biochemical treatment device, a fourth membrane treatment component and a fifth clear water tank. Wherein the MVR concentrated solution to be treated can be fed into the first coagulating sedimentation device. The first coagulating agent adding device is connected with the first coagulating sedimentation device, and the first coagulating agent adding device is used for adding a coagulating agent into the first coagulating sedimentation device, so that the MVR concentrated solution is flocculated and settled, and first coagulated sludge and first coagulated supernate are respectively obtained. The method can be suitable for MVR concentrated solution treatment scenes with different scales and treatment requirements, the wastewater treatment efficiency is improved, the treatment cost is reduced, efficient and stable treatment of wastewater can be achieved, and the method has high application value and wide popularization and application value.

The invention provides a method for automatically identifying and extracting total element information of a scanned borehole histogram. The method comprises the following steps of: (1) initializing parameter configuration; (2) character sample manufacturing and model training: generating corresponding character samples in batches according to font information set in initialization parameters, and training and optimizing an OCR character recognition model; (3) making a special symbol sample; (4) extracting and processing total element information of the borehole histogram; and (5) formulating a structured storage standard of a drilling histogram total element information extraction result, and storing the structured storage standard in an XML (Extensible Markup Language) file format. The method is reasonable in conception, one-time batch extraction of the total element information of the borehole histogram is achieved, the accuracy of information such as characters and special symbols can be effectively improved through the adopted deep learning algorithm, the position relation between the image elements is established, it can be guaranteed that the complete information of the borehole histogram can be comprehensively recorded in the XML marking text, and the accuracy of the borehole histogram is improved. And the drawing information is not lost.

The invention provides a ground mineral prediction method based on hyperspectral and geochemical data fusion, and the method comprises the steps: carrying out the preprocessing of hyperspectral remote sensing data and geochemical data, and carrying out the feature extraction of the hyperspectral remote sensing data and geochemical data; then, a proper data fusion method is selected to fuse the hyperspectral remote sensing data and the geochemical data, finally, a prediction model is established, and anomaly recognition and target area delineation are carried out. According to the method, hyperspectral and geochemical data can be conveniently fused, the advantages of the two methods are fully utilized, and the efficiency and accuracy of mineral resource exploration can be improved; the method provides support in the aspects of enhancing the recognition capability, expanding the detection range, improving the prediction precision, reducing the exploration cost, increasing the exploration speed, improving the prospecting success rate and supporting sustainable development.

The invention provides a jacket K-type pipe node strength prediction method based on error back propagation. The jacket K-type pipe node strength prediction method mainly comprises the following steps: (1) establishing a finite element model of a K-type pipe node; (2) compiling a command stream to realize finite element parameterization batch modeling of the pipe nodes; (3) performing data preparation and preprocessing; (4) establishing a pipe node strength prediction model based on a neural network; and (5) realizing a pipe node strength prediction model by using programming. The method is reasonable in conception, the strength range is directly predicted through the values of the pipe node design parameters, and therefore a large amount of finite element analysis is avoided.

The invention provides a reservoir inherent frequency downhole in-situ measurement method based on neural network filtering. The method comprises the steps that (1) pulse shock waves are generated through a continuous high-voltage pulse discharging device to induce reservoir rock mass vibration; (2) acquiring natural vibration noise signal data of the continuous high-voltage pulse discharge device during pulse discharge at the wellhead; (3) acquiring a background noise signal of the continuous high-voltage pulse discharge device in a static state in a shaft and feedback vibration signal data during pulse discharge; (4) filtering and noise reduction are carried out on the high-noise background data; (5) carrying out vibration signal analysis; (6) obtaining a Hilbert marginal spectrum, and determining a correlation coefficient between each intrinsic mode and an original vibration signal; and (7) determining the inherent frequency of the target reservoir. According to the method, the inherent frequency measurement of the target reservoir can be directly carried out underground, the problem that the underground inherent frequency measurement is difficult or the indoor inherent frequency test is inaccurate is effectively solved, and the underground in-situ efficient acquisition of the inherent frequency of the reservoir is realized.

The invention relates to the technical field of disaster risk evaluation research, in particular to a landslide disaster risk evaluation method and system based on a power transmission tower failure model. The method comprises the following steps: carrying out detailed investigation on a landslide area to obtain a deformation relationship between a power transmission tower and the earth surface; fLAC3D and ANSYS numerical simulation software is utilized to obtain a deformation failure model and mechanism of the power transmission tower; calculating the annual instability probability of the landslide by adopting an FLAC3D-Monte Carlo method; establishing a vulnerability evaluation model of the power transmission tower under the action of the landslide; and completing the landslide risk evaluation of the power transmission tower based on a model of risk = risk * vulnerability * economic value. The invention further provides a corresponding risk evaluation system. According to the method, the power transmission tower failure model is established, landslide deformation and tower failure are associated, quantitative and refined evaluation of the risk of the power transmission tower in the landslide area is achieved, and a new technical means is provided for geological disaster risk management and control of power grid facilities in the mountainous area.

The invention provides a preparation method of a high-damping titanium alloy ultrafine wire difficult to machine and deform. The preparation method comprises the following steps: (1) smelting a cast ingot; (2) homogenization treatment; (3) forging treatment; (4) groove rolling; (5) cold drawing processing; and (6) annealing treatment. The high-oxygen-content damping titanium alloy is reasonable in conception, and the machining deformation capacity of the high-oxygen-content damping titanium alloy is improved through a component micro-control and heterogeneous structure toughening technology; and by combining the traditional preparation and processing technology of the titanium alloy wire, the difficulty and threshold of material preparation are reduced, the problem of preparation and processing of the high-oxygen-content damping titanium alloy ultrafine wire is solved, and the method is suitable for large-scale production, popularization and application of fasteners, elastic components and the like.

The invention provides an atomic scale deformation field two-gradient decoupling method based on geometric phase analysis. The method comprises the following steps: (1) obtaining original data after crystal deformation through a high-resolution transmission electron microscope image; (2) performing Fourier transform on the original data to obtain reciprocal space information, selecting diffraction spots in the reciprocal space information of different crystal orientations to perform inverse Fourier transform to obtain phase information of a local lattice, and obtaining an atomic displacement field in a crystal grain based on the phase information; (3) decomposing the atomic displacement field into a first-order affine displacement gradient tensor and a second-order non-affine displacement gradient tensor, and respectively decomposing the first-order affine displacement gradient tensor and the second-order non-affine displacement gradient tensor to obtain deformation components of respective basic localization events; and (4) defining the participation degree of the atomic scale basic localization event, and analyzing the atomic scale physical mechanism of microdefect evolution. The method is reasonable in conception, and can effectively solve the multi-scale problem of regulation and control of macroscopic performance by a current material microscopic evolution mechanism.

The utility model discloses an automatic tube film label heating device based on a tube film packaging machine with a labeling function, which comprises the tube film packaging machine and a labeling machine assembly fixed on the tube film packaging machine, a whole roll of PE tube film is arranged on the front side of the tube film packaging machine, a pulled PE tube film is arranged on the tube film packaging machine in a penetrating manner, and the labeling machine assembly comprises a labeling machine rack. A placement barrel and a backing paper recycling barrel are rotationally connected to the labeling machine rack, a whole roll of label paper is arranged on the placement barrel, label paper conveyed out of the whole roll of label paper is wound around the backing paper recycling barrel, a heating assembly is arranged on the left side of the barrel film packaging machine, and the PE barrel film heating lamp hose support and the label heating lamp hose support can be bent and deformed at will. Therefore, the directions and angles of the PE tube film heating lamp and the label heating lamp can be adjusted according to actual conditions, so that the heating lamps can more accurately heat the PE tube film and the label, and the adhesion reliability is improved.

An oil separator for a compression refrigeration system includes an oil separator housing, a filter screen, and an oil level monitoring device, characterized in that an exhaust pulse baffle is provided in the oil storage area of ​​the oil separator, and the exhaust pulse baffle isolates the area of ​​the oil storage area close to the action part of the oil level monitoring device to form an oil level monitoring area, and at the same time, the bottom of the oil level monitoring area is connected to the bottom of the oil storage area, and the top of the oil level monitoring area is connected to the upper part of the working space, and the oil level monitoring device faces the oil level monitoring area. Since relative isolation measures are taken in the monitored area, the isolation can greatly reduce the impact of the ups and downs of the oil level in the oil storage area caused by the exhaust pulse on the oil level monitoring area, and the connection can correctly reflect the real and stable oil level of the oil storage area. This solution can solve the problem of ups and downs of the oil level caused by the exhaust pulse in a smaller filtering and oil storage space, so that the oil sight glass and / or the oil level switch can monitor the correct and stable oil level.

The present invention provides a fully digital laser frequency stabilization system based on a system on chip, which includes a board-level power supply module, a signal generation module, a data acquisition module, a digital signal processing module, a peak search module, a PID module, a data output module, a data cache module and a data communication module; the digital signal processing module and the signal generation module use the FPGA chip of the system on chip; the digital signal processing module is used to demodulate and low-pass filter the reflected signal of the frequency stabilization optical system; the signal generation module is used to generate a swept frequency sawtooth wave signal, a modulated sine signal, and an IQ demodulated sine and cosine signal; the PID module is based on the ARM processor of the system on chip, and the PDH error signal is subjected to a PID algorithm to obtain a PZT feedback control signal and a temperature feedback control signal. The present invention uses the system on chip as the control core, the FPGA chip is responsible for data acquisition, digital signal processing, and data output, and the ARM processor is responsible for the PID control algorithm and inverse tangent calculation, and can stabilize the output optical frequency of the laser.

The utility model discloses a guiding and orientation unifying conveying device for female bent pipe fittings, which is formed by combining a feeding adjusting frame, a front side feeding guide frame, a rear side feeding guide frame, a product discharging conveyor and the like, and is fixed on the product discharging conveyor through the feeding adjusting frame. The feeding guide frame on the front side and the feeding guide frame on the rear side are fixed to the feeding adjusting frame, the female bent pipe fittings on the product discharging conveyor are guided and limited through the front side orientation limiting mechanism and the rear side orientation adjusting mechanism, and the guiding and orientation unified conveying device used for the female bent pipe fittings and high in practicability is formed. The device has the advantages that the device is novel in design and reasonable in conception, mainly has the functions of centrifugally distributing and conveying female bent pipe fittings, adjusting the orientation of the female bent pipe fittings to enable the female bent pipe fittings to be uniform, limiting, guiding and conveying the female bent pipe fittings and finally carrying out laser marking, and is simple in structure, cost-saving, extremely low in dependence on the environment and convenient to install and operate.

The invention provides a toughness evaluation method for a multi-source fault of a floating platform. The toughness evaluation method mainly comprises the following steps: 1) constructing a degradation process model of the floating platform; 2) constructing a floating platform recovery process model; 3) determining corresponding toughness indexes of the system; and 4) evaluating the toughness grade of the system. The floating platform toughness evaluation framework constructed by the method disclosed by the invention more pays more attention to the adaptive capacity and the quick restoring force of the system when the system is disturbed by an external environment, and is a more comprehensive evaluation index for the safety and the reliability of the system; the concept of toughness is introduced into evaluation of the full life cycle of the floating platform, a decision maker can be helped to formulate a more reasonable operation and maintenance strategy for the platform with the low toughness level, the overall operation and maintenance cost of the platform is reduced, and the economical efficiency and competitiveness of the platform are improved; a toughness evaluation process and a frame are established based on the degradation characteristic and the recovery characteristic of the floating platform, a toughness factor is proposed to measure the toughness level, and reference significance can be provided for establishing a toughness evaluation system for other ocean structures.

The invention discloses an in-plane in-phase heterojunction of a two-dimensional material and an atomic-scale construction and characterization method of the in-plane in-phase heterojunction. The method comprises the following steps: step 1, preparing a single-layer 1T-NbSe2 / 1T-VSe2 in-phase heterojunction on a graphene substrate by adopting a molecular beam epitaxy two-step growth method; step 2, performing scanning tunneling microscope (STM) characterization on the morphology of the heterojunction material in a room temperature environment; 3, transferring the sample to a low-temperature scanning tunneling microscope through an ultrahigh vacuum transfer device, and carrying out atomic-scale morphology characterization and electronic state characterization; the composition, the structure and the interface quality of the heterojunction are accurately controlled, the high-quality preparation of the NbSe2 / VSe2 in-plane in-phase heterojunction of the 1T phase is realized, and a basis is provided for subsequent material research and device application.

The application provides a method for realizing well logging lithology identification based on a convolutional recurrent deep learning network of a self-attention mechanism, mainly comprising: (1) data set construction, that is, using drilling core lithology description results and well logging data of a coring well section to group samples; (2) model construction, that is, determining a sample input mode and a basic structure of the model; (3) model training, that is, removing null values and abnormal values, normalizing sample characteristic values, encoding label values, and dividing the samples into a training set, a verification set and a test set; (4) model evaluation, that is, realizing model construction, parameter optimization, model training and verification based on PyTorch. The application has reasonable conception, and realizes well logging lithology identification by constructing a core-well logging mapping relationship.

This invention provides an intelligent inversion method for ground mechanical parameters driven by impact penetration test data. It constructs a machine learning inversion model by learning and training the relationship between the time history curves of the penetrometer's dynamic response and ground mechanical property parameters in the interpretation model database. After acquiring measured cone resistance and acceleration time history data, these are input into the trained machine learning inversion model to directly obtain the ground mechanical property parameters. Furthermore, requiring only one input-output reverse transmission, the inversion speed can be reduced to the second level. The intelligent algorithm enables accurate interpretation of ground mechanical property parameters such as soil density, elastic modulus, Poisson's ratio, cohesion, and internal friction angle. This invention is rationally conceived and can efficiently, accurately, and intelligently interpret the ground mechanical property parameters of impact-penetrated soil.

The present invention provides a negative pressure thermal cycle exhaust and filling system and method for working medium in microgravity fluid experiment, the negative pressure thermal cycle exhaust and filling system includes a vacuum system and a temperature control system; the vacuum system includes a stepping motor, a liquid cylinder, a suction bottle and a vacuum pump; the suction pipe is provided with a first switch valve; the output end of the vacuum pump is connected to the air cavity of the suction bottle through a vacuum tube; the vacuum tube between the suction bottle and the vacuum pump is also provided with a pressure relief valve and a second switch valve in sequence; the temperature control system includes a temperature controller and a heating plate; the heating plate is fixed to the outer bottom of the suction bottle; the temperature controller is electrically connected to the heating plate. The present invention can realize the two functions of exhaust and liquid injection of the working medium by performing negative pressure thermal cycle operation on the fluid working medium. Compared with the traditional simple thermal cycle, the negative pressure can greatly improve the exhaust rate. At the same time, the system is simple to build, not limited by the site, low in cost and high in efficiency.

The present invention provides a video code stream processing and rendering system and method, the system includes a video streaming server and client application software; the client application software includes a UI thread, a video data processing thread and a state management thread. The method is: for each code stream, the UI component whose picture is to be played is first registered with the corresponding state manager, the state manager records the instances and quantity of these UI components, and when the first UI component is registered, it will automatically initiate a code stream request to the server and continue until all UI components are unregistered; the state manager receives data and intercepts image frames and then decodes them by opening a separate video data processing thread; each time the state manager receives a new image frame from the video data processing thread, it will notify each registered UI component to update the rendering picture. The present invention can significantly reduce the client application software performance overhead and video streaming server load overhead of multi-channel code stream multi-screen rendering.

The invention provides a coating method of an optical filter, which mainly comprises the following steps: (1) selecting a glass substrate as a base material, then placing the base material in a vacuum cavity, carrying out plasma cleaning on the surface of the base material, and then coating a first layer of IR (Infrared Radiation) film on the surface of the base material by adopting a vacuum coating machine; (2) in a vacuum cavity, plating a second IR film on the surface of the base material plated with the first IR film by adopting a vacuum coating machine; and (3) in the vacuum cavity, plating a third layer of IR film on the surface of the base material plated with the second layer of IR film by adopting the vacuum coating machine. According to the method, the conception is reasonable, the operation process is simple, the crystallinity of the microstructure of the film can be increased through the three coating processes in sequence, so that the reflection haze is improved, the visibility of some microscopic dust spots is further covered, the temperature is slowly reduced finally, the expected operable problem is solved, and the actual production efficiency is improved.

The invention provides a multi-layer film thickness control method which is based on a vacuum coating machine, and the vacuum coating machine comprises an evaporation system, an umbrella stand and a correction plate located between the evaporation system and the umbrella stand; the correction plates comprise a first correction plate, a second correction plate and a third correction plate; the method mainly comprises the following steps: firstly, placing a substrate glass product in a clamp, then placing the clamp in a hollow part of an umbrella stand, starting an evaporation source, driving an electron beam into a coating material, enabling the coating material to be evaporated by the electron beam and then penetrate through a first correction plate to be deposited on the surface of the substrate glass product, and then closing the evaporation source of an evaporation system to finish first coating; replacing the first correction plate with a second correction plate, and carrying out second coating; and finally, replacing the second correction plate with a third correction plate, and carrying out third coating. The method is reasonable in conception and simple in process, the uniformity of product coating can be effectively controlled, the performance and the yield of products are remarkably improved, the coating material loss is low, and the requirement for coating products with higher precision can be met.

The invention provides a fluid forming-based optical lens direct forming method and system. The forming method comprises the following steps of: preparing a container, a fluid forming mold, density matching liquid and optical polymer liquid; then, a fluid forming mold is fixed to the center of the container, the optical polymer liquid is injected into the fluid forming mold, and the fluid forming mold filled with the optical polymer liquid divides an inner cavity of the container into an upper sealing cavity and a lower sealing cavity; and then density matching liquid is injected into the upper sealing cavity and the lower sealing cavity, so that the fluid forming mold is completely immersed in the density matching liquid, and the optical lens is formed after forming and curing in the fluid forming mold. The forming system includes a container and a fluid forming mold. According to the method, the problems that the complexity of the manufacturing process and the required professional equipment hinder the rapid forming of the optical lens are solved, the rapid forming and manufacturing of the optical lens can be realized without grinding, surface polishing and the like, and meanwhile, the mirror surface type of the optical lens can be adjusted in real time.

The present invention discloses a stainless steel hydraulic pipe welding inflation positioning device, comprising a pipe body and a positioning mechanism, wherein a positioning mechanism is provided at one end of the pipe body, and an end cover is fixedly connected to one end of the positioning mechanism, an expansion sleeve is inserted inside the positioning mechanism, a tightening screw is movably inserted in the middle of the end cover, the tightening screw is located inside the expansion sleeve, and a butterfly compression nut is movably inserted through the end cover at the periphery of the tightening screw near one end; the present invention provides an effective positioning effect when welding the pipe body by providing a positioning mechanism at one end of the pipe body, and adjusts the connection position of the tightening screw with the expansion sleeve by means of the tightening screw in the positioning mechanism, so that the expansion sleeve can effectively adjust the fit between the expansion sleeve and the pipe body, thereby enabling the positioning mechanism connected through the end cover to implement a synchronous positioning effect, thereby effectively solving the problem of poor appearance quality after welding caused by incorrect visual positioning of high-pressure flange short pipe welding.

The invention provides an energy-gathered jet flow forming and stability analysis method, which comprises the following steps of: performing jet flow forming analysis on energy-gathered jet flow formed by crushing a shaped charge liner by detonation waves generated by explosive initiation so as to establish a relationship among shaped charge liner structure parameters, a jet flow diameter, a temperature and a strain rate; performing jet flow stability analysis on the energy-gathered jet flow to determine a jet flow stability loss criterion; and finally, the jet flow fracture time is obtained. According to the method, the relation between the shaped charge liner structure parameters and the jet diameter, temperature and strain rate is established, a jet stability criterion and jet fracture time evaluation method comprehensively considering strain hardening, the strain rate effect, the heat effect and the necking effect is provided, and an analysis method of the shaped charge liner structure parameters on the jet stability is constructed. And the jet stability is effectively analyzed.

The invention provides a method for researching a shaped charge jet flow stability criterion and fracture time, which comprises the following steps of: 1) firstly, constructing a tensile model of shaped charge jet flow in a steady state based on strain hardening, a strain rate effect, a heat effect and a necking effect of a shaped charge liner material; 2) superposing disturbance on the basis of completion of the step 1) to construct a disturbance model; and 3) determining an instability criterion and fracture time by solving the disturbance model constructed in the step 2). The method is reasonable in conception, comprehensively considers various influence factors of strain hardening, strain rate effect, heat effect and necking effect of the material, deduces a corresponding instability criterion and fracture time determination method through deep analysis of the factors, can more comprehensively and accurately describe the instability behavior and fracture process of the energy-gathered jet flow, and has a good application prospect. Therefore, the jet flow performance can be predicted more effectively.

The invention provides a method for improving the calculation efficiency and stability of ultra-high-speed collision simulation, and aims to improve the simulation efficiency by establishing an ultra-high-speed collision model, setting symmetric constraints, adopting a rigid-flexible conversion technology and performing parallel processing, so that the solving process is remarkably accelerated; besides, in order to enhance the stability of the solution, the stability of the solution process is ensured through static memory allocation, and unnecessary fluctuation is reduced. By comprehensively applying the strategies, the simulation efficiency of ultra-high-speed collision can be effectively improved, and more efficient calculation support is provided for ultra-high-speed collision research.

The invention provides a light-operated visible light high-correlation MIMO system based on CWDM. The light-operated visible light high-correlation MIMO system comprises an RG optical module and an LED AP unit connected with the RG optical module through an optical fiber. The RG optical module comprises a spatial modulation digital signal processor (SMDSP), a carrier modulation module, a PI control block, a CWDM multiplexer and at least one MZM unit. The PI control block comprises at least one radio frequency power amplifier (PA), and the PI control block and the MZM unit are used for carrying out concentrated light control on the LED transmitting power in the LED AP unit; each MZM unit comprises a laser device LD and an MZM module; the LED AP unit includes a CWDM demultiplexer, at least one photoelectric converter (PD), at least one bandpass filter (BPF), and at least one LED. The method is reasonable in conception, takes the CWDM technology as the background of an access network, mainly aims to reduce the correlation of visible light communication, and constructs a visible light MIMO system with low energy consumption and high performance based on a centralized optical signal processing theory.

The utility model belongs to the technical field of PPR pipe fitting packaging, and discloses a code scanning and waste bag discharging device based on a vertical packaging machine with printing and labeling functions, which comprises the vertical packaging machine with the printing and labeling functions, a code scanning mechanism and a waste bag clamping and removing mechanism, the waste bag clamping and removing mechanism is fixedly installed on the inner side wall, close to the lower portion, of the main body frame, the vertical packaging machine with the printing and labeling functions is used for printing and pasting logistics codes to packaging films and manufacturing packaging bags, and the code scanning mechanism is used for recognizing logistics bar code labels on the packaging films. And the waste bag clamping and removing mechanism is used for clamping and removing the packaging bags of which the logistics codes cannot be recognized by the code scanning mechanism. The device has the functions of scanning and identifying bar code labels on packaging film stickers of the vertical packaging machine with the printing and labeling functions and clamping and removing waste packaging bags which are manufactured by the vertical packaging machine with the printing and labeling functions and cannot be scanned and identified, and meanwhile, the device is simple in structure, cost-saving and convenient to operate.

The invention provides a time shift induced polarization method four-dimensional inversion method based on a finite memory quasi-Newton method. The time shift induced polarization method four-dimensional inversion method comprises the following steps: 1) preprocessing observation data; 2) reading a file required by inversion; 3) calculating by adopting a master-slave mode designed by an MPI parallel program; (4) the forward modeling response of the time-shifting polarizability model is calculated in parallel through MPI; 5) calculating an objective function and a gradient thereof in parallel through MPI; 6) performing approximate calculation by using a finite memory quasi-Newton method to obtain an inverse matrix of the Hessian matrix; 7) calculating the updating direction of the time-shifting polarizability model; 8) searching a proper step length alpha in the current iteration; 9) updating the model; and 10) judging whether an iteration termination condition is met or not, if so, outputting a result, otherwise, returning to the step 3) to carry out circulation until an inversion result meets the iteration termination condition. According to the method, the calculation of a Hessian matrix is avoided, the inversion calculation amount and the required memory are reduced, and the problem that the time required by inversion is too long is solved by adopting a multi-thread synchronous calculation mode.