79results about How to "Improve concealment" patented technology

This invention discloses a capture device for unmanned underwater vehicles (UUVs), comprising a submersible fixed by a mounting frame. The mounting frame is symmetrically mounted with a grasping mechanism for capturing the UUV via a base. The grasping mechanism includes a drive arm driven by the base, with the other end of the drive arm rotatably connected to four corner support frames. The four corner support frames are driven by connecting arms to contact claws for gripping. A groove is provided on the side of the drive arm near the base, and a servo motor is mounted on the base. The servo motor is connected to a gear at one end of a limiting link, transmitting power through the other end of the limiting link to the groove on the drive arm to achieve the movement of the grasping mechanism. This invention also discloses a method for launching and recovering UUVs in conjunction with the above-mentioned launch and recovery device. This invention simplifies precise hook docking operations in high sea states, reduces the dependence of UUVs on computing power during launch and recovery, and improves the automation level of the launch and recovery process.

The application discloses a multi-modal post-fusion invisibility method based on reinforcement learning, an electronic device and a medium, and the method comprises the following steps: acquiring a visible light image and an infrared image; generating an initial mask by an agent; setting the initial mask for the visible light image and the infrared image; inputting the visible light image with the mask into a visible light detector to obtain a confidence score of a target object in a visible light mode; inputting the infrared image with the mask into an infrared detector to obtain a confidence score of the target object in an infrared mode; performing post-fusion processing on the above scores to obtain a post-fusion confidence score; when the above three confidence scores are all less than a threshold value, the target object completes invisibility; otherwise, a reward function is calculated, reinforcement learning parameters are updated, an updated mask is generated by the agent, the above steps are repeated for iteration, and the above three confidence scores are all less than the threshold value.

The application relates to the field of medical instruments, and provides an appendix orifice supporting device for endoscopic retrograde appendix treatment, which comprises a support head, a support base, an unfolding piece, a first direction line, a second direction line and an opening and closing piece. A channel is arranged on a colonoscope. The support base is arranged around the front end of the colonoscope. The unfolding piece is arranged in at least three groups and is arranged in sequence along the support base. The opening and closing piece is located in the channel and is divided into a pushing end and a connecting end. The pushing end is located outside the colonoscope. When the pushing end is pushed, the connecting end moves along the channel and extends out of the channel. The support head is an elastic structure with expansion characteristics, and the bottom is connected with the connecting end and the unfolding piece. The application has the advantages of conveniently providing support for the appendix orifice and providing the effect of extending a sub-scope into the appendix cavity for shooting, exploration and treatment on the basis of facilitating colonoscope treatment.

A generative artificial intelligence-driven method for detecting inappropriate content relates to the field of inappropriate content detection technology, solving the problems of inaccurate detection and reliance on manual labor. The method includes: automatically collecting inappropriate content to obtain a first inappropriate content dataset, and performing detection through a content security detection platform to obtain a first detection result; extracting sample labels from the data in the first inappropriate content dataset to obtain undetected inappropriate features and their combination patterns; manually analyzing the data to obtain highly concealed inappropriate features and novel combination methods, generating prompt words for the AIGC model; constructing a multivariate, highly concealed inappropriate content dataset based on the inappropriate content generated by the AIGC model and not detected by the content security detection platform; and training a content security detection model using the labels and multimodal features of the above two inappropriate content datasets. This invention has high detection efficiency and accuracy, can detect highly concealed and diverse inappropriate content, and reduces reliance on manual labor.

The utility model provides an anti-counterfeiting packaging film which comprises an AL film, an OPP film, a VC film, a false anti-counterfeiting mark, a covering anti-counterfeiting piece and an anti-counterfeiting two-dimensional code, the AL film, the OPP film and the VC film are compounded together, and the false anti-counterfeiting mark is printed on the OPP film; an anti-counterfeiting two-dimensional code is arranged on the AL film, and the AL film is compounded with the covering anti-counterfeiting sheet; according to the utility model, the AL film, the OPP film and the VC film are compounded, so that the composite film has protection and mechanical properties; the anti-counterfeiting mark and the anti-counterfeiting two-dimensional code are arranged in a staggered manner, and dynamic anti-counterfeiting of the thermosensitive covering anti-counterfeiting piece is matched, so that the anti-counterfeiting reliability and concealment are improved, and the anti-counterfeiting device is not easy to counterfeit.

This invention discloses an ultra-deep payload disposal device, comprising: a hollow base with its top for connection to an underwater vehicle and its bottom for connection to a cover plate; the cover plate is disposed in the hollow cavity of the base, its bottom connected to a wedge block seat, and a through hole axially formed in its center; a limiting seat disposed in the through hole of the cover plate, with an opening at the top, a wedge surface at the bottom, and limiting holes on its side walls for mounting limiting components; an electromagnet disposed in the hollow cavity of the base, its top electrically connected to a control component, and its bottom limiting boss inserted into the top opening of the limiting seat, together with the cover plate, mounting the limiting components; and a load having a mounting hole accommodating a wedge block seat, with a mounting boss in the mounting hole and an elastic element sleeved on the outside of the mounting boss; one end of the elastic element contacts the bottom surface of the wedge block seat, and the other end contacts the bottom surface of the mounting hole; one end of the wedge block engages with the wedge surface at the bottom of the limiting seat for mounting, and the other end is mounted into the load. The structure is simple and easy to install.

The utility model discloses a two-dimensional code anti-counterfeiting mark with grating analysis verification, which comprises a base material layer, a grating layer, a two-dimensional code layer and a protective layer, a grating structure is embedded in a two-dimensional code area, and a specific analysis sheet is matched, so that the two-dimensional code can be scanned, and grating information can be verified, thereby effectively preventing counterfeiting and improving the anti-counterfeiting level. The anti-fake label has the advantages of being high in anti-fake performance, easy to identify, good in compatibility, good in concealment and the like, and has wide market application prospects.

The invention relates to the field of power distribution network operation and maintenance first-aid repair operation tool carrying, in particular to a carrying tool and application thereof.The carrying tool comprises a moving mechanism, the moving mechanism comprises a walking assembly, a bearing plate is arranged on the upper portion of the walking assembly, an auxiliary obstacle crossing assembly is arranged on the bearing plate, and the auxiliary obstacle crossing assembly comprises telescopic parts arranged at the front end and the rear end of the bearing plate; the telescopic part stretches or shrinks in the vertical direction; the accommodating mechanism is arranged at the upper part of the bearing plate; through the combined design of the moving mechanism and the containing mechanism, the whole device becomes a'tool warehouse 'capable of moving autonomously, the problems that rush-repair personnel lift the hand and get on and off a vehicle difficultly are solved, manpower is liberated from heavy physical labor, the preparation time before work is remarkably shortened, and the emergency response speed is increased; through the design of the auxiliary obstacle crossing assembly, the front end and the rear end of the equipment can be lifted up in sequence when an obstacle is crossed, so that the walking assembly does not make contact with the obstacle, and the problem that the walking assembly is stuck by the obstacle is avoided.

The invention discloses a big language model security test method and system based on a small language cross-language attack. The method comprises the steps of constructing a small language selection strategy library, designing a cross-language semantic conversion engine, constructing a multi-dimensional language barrier, implementing a self-adaptive language switching mechanism and establishing a cross-language security evaluation system. According to the method, through dual language barriers of minority language input and Chinese output, a traditional single-language security detection system is effectively bypassed, attack content is presented in a minority language form, but a target model is forced to reply with Chinese, and a language understanding gap is established between input and output; the dynamic language switching strategy realizes intelligent cross-language attack, and the attack method can be adjusted in real time according to the defense response of the target model. According to the method, the adaptability, the concealment and the overall test effect of attacks are remarkably improved, and a systematized and efficient technical means is provided for large model security assessment in a multi-language environment.

The novel bra provided by the utility model adopts a double-layer composite cup structure, the outer layer is made of an elastic mesh fabric, the inner layer is made of a skin-friendly fabric and extends upwards to form an extension part, and the extension part extends from the top of the cup to the heart-shaped position, so that the wrapping property of the breast is enhanced; the bearing system is composed of a side piece and a heightened gauze rear piece, the surface of the rear piece is provided with a supporting belt extending to the connecting position of a steel ring, and a vertically-arranged rubber band is used for improving the side receiving force; the adjustable widened shoulder straps are rigidly connected with the rear wings through the steel rings and are matched with the semi-surrounded U-shaped steel rings to form a three-dimensional supporting system; an ultra-thin traceless back buckle system is provided with three rows of adjusting buckle positions, and pressure distribution is optimized by combining the design that the width of the side edge is gradually changed. Through the composite bearing structure, the multi-point steel ring support and the ergonomic adjusting system, the double improvement of wearing comfort and bearing stability is realized, and the technical problems that the shoulder straps of the traditional bra slip off, the back tightening marks exist, and the supporting force is insufficient are particularly solved.

The invention discloses an acid-base response type organic room-temperature phosphorescent material based on a B-N bond and a preparation method and application thereof. The acid-base response type organic room-temperature phosphorescent material comprises a host matrix and guest molecules doped in the host matrix, the main matrix is poly (4-vinylpyridine); the guest molecule is an aromatic compound with a boric acid ester group; a dynamic B-N coordination bond is formed between boron atoms in the guest molecule and nitrogen atoms of a pyridine group in the host matrix, and the reversible phosphorescence response to an acidic atmosphere and / or an alkaline atmosphere is realized by the acid-base response type organic room temperature phosphorescence material based on the B-N bond through the formation and fracture of the dynamic B-N coordination bond. The B-N bond can also anchor molecules to inhibit non-radiative transition, promote spin-orbit coupling and induce efficient room-temperature phosphorescence. According to the invention, blue-to-red full-color gamut luminescence is realized by adjusting the structure and the concentration of the object, and the blue-to-red full-color gamut luminescent material has super-long service life and high-sensitivity reversible switching The preparation process is simple and environment-friendly, and has wide application prospects in the fields of information encryption, anti-counterfeiting and detection.

The invention relates to the technical field of navigation decoy, in particular to a black flight unmanned aerial vehicle navigation decoy method and system for unmanned aerial vehicle countering. The method comprises the following steps: acquiring positions of a black-flight unmanned aerial vehicle and a visible satellite, and constructing a signal incoming coordinate system taking the black-flight unmanned aerial vehicle as an original point; screening an initial center satellite according to the angle distribution density and the outlier condition between the visible satellites in the signal coming direction coordinate system; predicting a future expected position based on a preset decoy trajectory of the black flight unmanned aerial vehicle, and obtaining a comprehensive membership degree according to an angle change condition of the visible satellite relative to the initial center satellite at the future expected position and an angle distance of a signal in a direction coordinate system; according to the initial center satellite and the comprehensive membership degree, a final center satellite of the satellite cluster is obtained through a weighted fuzzy C-means clustering algorithm, and then a decoy launching coordinate is obtained to decoy black flight unmanned aerial vehicle navigation. According to the method, the decoy launching coordinates are accurately obtained, so that the navigation decoy accuracy of the black flight unmanned aerial vehicle is effectively improved.

The utility model relates to an adjustable aluminum chair easy to disassemble and assemble. The adjustable aluminum chair comprises a chair frame, a cushion assembly and a backrest assembly, wherein the cushion assembly and the backrest assembly are detachably arranged on the chair frame; the chair frame comprises two front supporting aluminum profiles, two rear supporting aluminum profiles and an upper connecting aluminum profile which is detachably connected between the middle parts of the two front supporting aluminum profiles; a first connecting profile groove is formed in the front supporting aluminum profile, a first bolt connecting hole and a second bolt connecting hole are formed in the first locking block, and a first sliding block connected with the first locking block is arranged in the first connecting profile groove. The backrest assembly comprises a U-shaped connecting frame and a backrest, and a second sliding block connected with the U-shaped connecting frame is arranged in the first connecting profile groove. According to the technical scheme, the chair frame can be disassembled into a plurality of aluminum profiles, the cushion assembly and the backrest assembly are detachably installed on the chair frame, the packaging size is reduced, carrying and transportation are convenient, the profile groove structures on the aluminum profiles are matched with the sliding blocks, and the vertical heights of the cushion and the backrest can be adjusted while quick disassembly and assembly of all the components are achieved.

This invention relates to the field of secure communication application technology, specifically to a host asset identification and profiling method based on multimodal network feature fusion enhancement. First, a data collection agent is deployed at the core node of the target network to collect multimodal data through traffic mirroring and log crawling, and a cross-modal aligned multi-source network data representation is constructed. Next, a TCN-BiLSTM model combined with an attention mechanism is used to extract deep periodic features, and a GraphSAGE model is used to generate graph embedding vectors bound to topological relationships. A pre-trained BERT model is used to obtain global protocol semantic feature vectors and communication intent distribution. Subsequently, a modality-specific mapping is used to unify dimensions, and a two-layer mechanism of intra-modal self-attention and inter-modal mutual attention is constructed to dynamically allocate weights, fusing multimodal features to extract core features of host assets. Finally, the fused features are mapped to structured text, and a CLM strategy combined with LoRA technology is used to fine-tune the LLM, generating a natural language asset profile containing role positioning, behavioral patterns, and topological relationship logic.

The invention relates to a single-phase Internet of Things intelligent electric energy meter, and relates to the technical field of electric meters, and the electric energy meter comprises an electric meter body which is provided with a wiring area, a display area and a drainage channel arranged in a thickness direction in a penetrating manner, a terminal cover with a seal, a connecting screw with a first hole channel, and an elastic plugging mechanism. The terminal cover is provided with a plug-in solenoid, and the threaded hole is axially opposite to the threaded groove of the wiring area in a closed state. When the connecting screw is inserted in place, the first hole channel in the screw rod is communicated with the second hole channel in the side wall of the inserting screw pipe and forms an air guide flow channel with the drainage channel, and an external air source removes dust in a wiring area through the flow channel. And after the connecting screw is taken away, the plugging mechanism seals the port of the second hole channel under the elastic action to hide the channel. According to the structure, dust removal convenience and channel concealment are both considered, and the electricity larceny prevention effect can be improved.

This utility model discloses a window sill end finishing connection structure, including a window sill wall, a pad layer on top of the window sill wall, a stone veneer on top of the pad layer, a connecting plate on the side of the pad layer away from the window sill wall, a fixing plate fixedly connected to the lower part of the connecting plate away from the pad layer, and a side plate fixedly connected to the side plate away from the connecting plate. An upwardly inclined protrusion is provided on the upper part of the side plate away from the fixing plate. Multiple equidistant positioning blocks are provided on the side of the connecting plate near the pad layer, and positioning grooves matching the positioning blocks are formed on the pad layer. This connection structure is simple, well-concealed, and highly stable during installation, effectively preventing aging and cracking, and improving the service life of the window sill end finishing.

The invention discloses a deception jamming method and device for an azimuth phase coding SAR (synthetic aperture radar), and belongs to the technical field of electronic support system synthetic aperture radar countermeasure. The method comprises the following steps: intercepting an SAR signal, carrying out two-dimensional structured phase stripping by constructing an inverse distance modulation operator and an inverse azimuth modulation operator, and estimating to obtain an azimuth phase sequence; carrying out complex domain differential operation on the estimated azimuth phase sequence, constructing a phase consistency measurement index and minimum consistency order mapping, and identifying a coding structure of the phase consistency measurement index and the minimum consistency order mapping; constructing a linear least square problem based on an identification result, and reconstructing an azimuth phase sequence; and performing phase consistent modulation including convolution modulation on the intercepted signal to generate a deception jamming signal. According to the method, complete matching of the interference signal and the SAR receiving filter is realized, and effective deception interference can be implemented on a new system SAR adopting random, primary, secondary and grouped phase coding.

The utility model discloses a double-sided hidden holographic image-text film structure and an anti-counterfeit label, the film structure comprises a base film layer, a UV curing holographic layer and a plastic filling layer which are laminated from top to bottom, the UV curing holographic layer is provided with a first pattern, the first pattern forms a nanoscale sawtooth groove on the UV curing holographic layer, and the first pattern is provided with a second pattern. The sawtooth grooves are completely filled with the plastic filling layer, a plane interface is formed, a second pattern is formed on the side, facing the first pattern, of the plastic filling layer, the first pattern and the second pattern can be separated, and after separation, the surfaces of the first pattern and the second pattern are not sticky. The display device is in a transparent state when not uncovered, the first pattern and the second pattern can be completely seen after the display device is uncovered, and the display device has the advantages of attractiveness and concealment.

This utility model discloses a flashlight with an alarm function, belonging to the field of flashlight technology. It includes a flashlight body, a battery module, a microcontroller unit, an alarm switch, and a wireless communication module. Both the microcontroller unit and the wireless communication module are electrically connected to the battery module. The alarm switch is connected to the microcontroller unit and is used to input commands to turn the alarm mode on or off. The microcontroller unit activates the wireless communication module upon receiving a command to activate the alarm mode and deactivates it upon receiving a command to deactivate the alarm mode. The wireless communication module, when activated, connects to an external communication device and triggers an alarm through that device. It also includes a buzzer and an arc component. This utility model increases the concealment of the alarm, has a wide range of applications, and can provide information such as the location of the person in distress, the surrounding environment, and their needs, allowing rescuers to accurately formulate rescue plans and improve the likelihood and efficiency of rescue.

The invention relates to the technical field of internet security, and particularly provides a black box graph fraud detection collusion model editing method based on a conditional diffusion model, which comprises the following steps: S1, constructing a local subgraph context coding mechanism; s2, establishing a condition diffusion generation model of the potential space; s3, designing a joint generation strategy of features and edges; and S4, collaborative optimization based on adversarial loss. Under the combined action of related technical schemes, the problem that in the prior art, a method for cooperatively generating nodes with collusion characteristics and edge attacks based on a conditional diffusion model under the black box and only local view constraint is lacked is solved; according to the method, real collusion attack simulation is realized, local consistency and high concealment are ensured, the problem of segmentation of feature-topology generation is solved, strict black box and local access constraints are met, potential security vulnerabilities in an industrial financial risk control system can be revealed, and a key technical support is provided for developing a next-generation robust defense mechanism.

The application discloses a kind of analysis and prediction methods of high-frequency noise of pod propeller, comprising the following steps: S1, obtain the flow field original data and corresponding high-frequency noise monitoring data under the working state of pod propeller, and pre-process;S2, based on the separated vortex model, construct flow field-noise coupling analysis framework, set the time step and calculation frequency matched with actual working condition, the present application relates to ship propeller noise analysis and prediction technical field.The analysis and prediction method of high-frequency noise of the pod propeller, by constructing flow field-noise coupling analysis framework, the pre-processed flow field data are processed, the vortex structure characteristics of flow field can be captured, and based on the correlation mechanism of vortex structure and noise generation, the contribution of each vortex unit to high-frequency noise is accurately calculated, the vortex unit of dominant noise source is screened, and the dynamic positioning of high-frequency noise source is realized in combination with its space-time position information, which helps to understand the root of noise generation.

The application discloses a sensitive prompt word generation method and system based on parameter sensitivity quantification, relates to the technical field of artificial intelligence security, and aims to solve the problem of sensitive test sample generation difficulty in black box large language model integrity verification. The method comprises the following steps: obtaining an original large language model; constructing a comprehensive parameter sensitivity index, which combines micro sensitivity for representing small parameter modification and macro sensitivity for representing parameter quantification, pruning and other substantial modification, so as to comprehensively quantify the sensitivity of the prompt word; in a continuous embedding space, a gradient optimization algorithm is used to iteratively optimize the comprehensive index, and semantic rationality and other constraints are applied to ensure the natural fluency of the generated prompt word; finally, the optimized embedding vector is mapped back to a discrete word sequence to obtain the final sensitive prompt word. The application realizes low-cost and automatic test sample generation, and significantly improves the accuracy, efficiency and concealment of cloud model integrity verification.

This invention discloses a method, apparatus, device, and storage medium for generating adversarial audio examples. The method includes: acquiring text information and noise; inputting the text information into a random duration predictor to obtain the duration information of each text, aligning the duration information with the noise to obtain an alignment result; inputting the text information and alignment result into a prior encoder to encode intermediate features; inputting the intermediate features and noise into a conditional distribution generator, using noise as a condition, passing through multiple parallel long short-term memory networks and fully connected layers to obtain multiple frame-level distributions of the intermediate features under noise conditions; converting the distributions through a flow layer to an approximate distribution with the posterior distribution of the audio frames, and sampling latent variables; and decoding the latent variables to obtain the audio adversarial examples. This invention utilizes the principle of distribution sampling to conditionally add noise to a region inaudible to the human ear, making the generated audio adversarial examples more effective at deceiving the human ear.

The invention discloses an underwater sound source target detection, identification and positioning method and device based on a millimeter wave radar, and belongs to the technical field of underwater target detection, identification and positioning. The method comprises the following steps: acquiring a water surface echo signal by using a millimeter wave radar, and performing Fourier transform to obtain a distance-time spectrum; extracting a slow time phase sequence of each range gate in a radar beam coverage range, and obtaining a sound-induced water surface vibration signal after unwinding and filtering; performing correlation calculation on the vibration signal and a preset target feature library, or realizing target recognition through a deep learning model; a multi-radar cooperation or single-radar digital beam forming technology is adopted for target positioning, and large-range water area searching is achieved. According to the invention, the millimeter-wave radar is used for detecting micron-sized water surface vibration with high phase sensitivity, the defects of short distance, complex arrangement and the like of traditional acoustic and optical detection are overcome, and the system has large-range, real-time and non-contact underwater target detection and positioning capability.

This invention discloses a low-noise hydraulic cylinder with adjustable end stroke and its assembly method, belonging to the field of ship vibration reduction and noise reduction technology. The cylinder includes a bow end cap, cylinder barrel, piston, connecting rod, buffer sleeve, stern end cap, and structures such as a reversing oil passage, a buffer oil passage, a reversing oil chamber, and a buffer oil chamber. The buffer sleeve is fitted onto both sides of the connecting rod, forming a closed buffer oil chamber in cooperation with the end cap, cylinder barrel, and piston. During operation, the oil flow rate and pressure of the buffer oil chamber are controlled by adjusting the oil pressure at the buffer port, achieving precise adjustment of the piston and connecting rod end stroke, avoiding rigid collision between the piston and the end cap, and suppressing impact noise at the source. This invention has a compact structure, reliable sealing, and convenient assembly, significantly reducing vibration impact and operating noise, improving the stealth of ships, and is suitable for scenarios with high vibration reduction and noise reduction requirements, such as the opening and closing of ship hull covers.

This utility model provides an integrated device for lighting nodes on curtain walls, including a curtain wall keel and a glass curtain wall installed on the exterior of the curtain wall keel. It also includes lighting units installed at the cross-shaped connections between four adjacent glass units on the glass curtain wall. The inner end of each lighting unit is fixedly embedded in a square groove at the cross-shaped connection, and the power cord at the rear end of the lighting unit is pre-embedded in the supporting column of the curtain wall keel. This utility model integrates the lighting system with the curtain wall project, arraying lighting units at each cross-shaped connection on the glass curtain wall and pre-embedding power cords in the columns of the curtain wall keel. This allows the lighting units to be installed synchronously with the curtain wall keel and glass curtain wall, avoiding secondary construction damage and project delays. Furthermore, by concealing the power cords inside the curtain wall, it avoids exposed power cords that affect aesthetics, ensuring electrical safety and concealment.

The invention provides a method, a device and equipment for identifying a fingerprint through Canvas, and a medium. The method comprises the following steps of: generating a PNG (Portable Network Graphics) picture locally at a client by using api of the Canvas; the PNG picture is uploaded to a server side; the metadata of the picture is detected at the server side, and the corresponding Type and / or Colors feature values are obtained to judge whether the real system of the client side is the operating system environment or not, so that the fingerprint browser can be accurately recognized to be the real operating system environment.

This disclosure provides a method, apparatus, device, and medium for generating adversarial perturbations for voiceprint recognition. The adversarial perturbation generation method includes: acquiring a training voiceprint sample set; initializing an adversarial sample generation network; determining a target recognition object for each original voiceprint sample in the training voiceprint sample set; inputting the original voiceprint samples into the adversarial sample generation network to obtain adversarial voiceprint samples; inputting the adversarial voiceprint samples into a voiceprint recognition network to obtain a first recognition result vector; determining a sample loss function for the adversarial sample generation network based on the original voiceprint samples, the adversarial voiceprint samples, a first probability, and a second probability; training the adversarial sample generation network based on the sample loss function to generate adversarial perturbations. Embodiments of this disclosure can improve the efficiency of generating adversarial perturbations and also enhance the dominance and stealth of the adversarial perturbations. Embodiments of this disclosure can be applied to artificial intelligence, communication security, etc.

The application discloses a kind of automobile towing tow hook devices, it is related to automobile tow hook technical field;And the present application includes U-shaped main plate, cover plate, tow hook seat and bottom supporting plate, the tow hook seat is rotatably connected to one end of U-shaped main plate, the cover plate is connected at the end of U-shaped main plate and cover plate, the bottom supporting plate is slidably connected to the middle of U-shaped main plate;The middle of the lower end of the two sides of U-shaped main plate is provided with horizontal sliding slot, the middle of the lower end of the two sides of U-shaped main plate is provided with inclined sliding slot on one side, the other side of the lower end of the two sides of U-shaped main plate is provided with inner rotating hole, the outer side of two the inner rotating hole is provided with outer rotating hole;The present application is slid by adopting the sliding piece lever sliding linkage structure, cooperates with sliding slot guide transmission, by poking sliding piece can realize tow hook unfolding and storage, discard traditional hidden tow hook thread rotation disassembly mode, can effectively avoid the jamming, rust death phenomenon caused by thread rust, opening and closing switch simple labor-saving, emergency use efficiency is high.

The embodiment of the invention discloses a watermark embedding method, a watermark identification method, electronic equipment and a storage medium. According to the embodiment of the invention, the method comprises the steps: dividing a structured data set into a plurality of structured data groups with the same number of structured data, determining the data identification of each structured data in the corresponding structured data group, and determining the watermark information of each structured data group; and adjusting the arrangement sequence of the structured data in each structured data group according to the watermark information of the structured data group so as to embed the corresponding watermark information. In the embodiment of the invention, the watermark information is used for representing the sorting of the data identifiers of the structural data, so that the embedding of the watermark can be completed without adding extra information in the structural data set, the concealment of watermark embedding is improved, the availability of the structural data is not influenced, and the security of the watermark can be improved.