34results about How to "Both stable" patented technology

This utility model provides a raw material mixing device for nylon composite material production, belonging to the field of nylon material production technology, to solve the problems of existing raw material mixing devices for nylon composite material production, such as inconvenience in movement, easy collision during handling, and high temperature on the tank surface causing burns. It includes a mounting base, a mixing tank, a protective frame, an adjustment knob, moving rollers, a moving component, and a protective component. The mixing tank is fixedly mounted on the top of the mounting base; the protective frame is vertically slidably connected inside the mounting base; the adjustment knob is located on one side of the mounting base; four sets of moving rollers are provided, and the four sets of moving rollers are located at the bottom of the mounting base; the moving component is located at the bottom of the mounting base; and the protective component is located on the upper part of the mounting base. This utility model has the advantages of flexible movement, safe protection, and ease of use.

The application provides a UAV-InSAR-based magnetic suspension system multi-point collaborative reinforcement learning compensation control method, system, device and medium, the method comprises the following steps: using a UAV to carry a lightweight X-band interferometric synthetic aperture radar system to carry out high-precision surveying and mapping on a magnetic suspension line, and constructing an orbit irregularity power spectrum model; a hierarchical control system is constructed, the amplitude saturation controller in the lower layer generates a basic electromagnetic force control law according to the state quantity of the current suspension point; the upper layer compensation controller based on reinforcement learning is an agent, interacts with the environment composed of the suspension frame, the track and the amplitude saturation controller, trains by using the standardized irregularity function obtained from the track irregularity power spectrum model, and outputs the compensation control quantity for each suspension point; the basic electromagnetic force control law and the compensation control quantity are superimposed to generate the total electromagnetic force control law of each suspension point, and the suspension system is actively compensated and globally stably suspended. The application significantly improves the comprehensive control performance of the suspension system.

This invention discloses an anti-theft alarm fastener. By integrating a position detection module, a control module, and an alarm module into the male and female buckles of an existing magnetic fastener, it achieves real-time monitoring of the fastener's connection status and automatic alarm functions upon unauthorized separation. The control module, with its function selection button, allows the fastener to flexibly switch between at least two operating modes: alarm function off or on. This greatly improves the product's practicality and applicability, meeting diverse user needs in different situations. The position detection module uses a magnetic trigger and a Hall sensor element to form a non-contact position detection module, avoiding reliability issues caused by contact oxidation, wear, or poor contact in traditional mechanical switches. Furthermore, the mating structure of the mounting groove and positioning recess improves the accuracy and consistency of detection, effectively avoiding misjudgments or missed alarms due to positional misalignment.

The application relates to a concrete ecological revetment pile and relates to the technical field of revetment piles, which comprises a composite revetment pile body, wherein the composite revetment pile body is a three-layer composite structure. The three-layer composite structure of the composite revetment pile body cooperates with an ecological guiding assembly, a steel reinforcement framework pre-buried in a high-strength concrete core layer provides basic structural strength, a first filler in a self-repairing concrete layer realizes self-repairing of cracks, a second filler in a porous recycled concrete layer creates a plant growth environment, a top nutrient soil layer and a bottom nutrient soil layer in a top reserved cavity in the ecological guiding assembly are communicated with ecological holes in a honeycomb distribution through a macromolecular fiber net and a biocompatible coating on the inner wall of the ecological holes, the survival rate of vegetation is improved, and plant root systems can grow transversely through the ecological holes and interweave with plant root systems in the interiors of adjacent composite revetment pile bodies to form a net-shaped structure and enhance overall stability.

This invention discloses an enhanced stability suction-type shelf, comprising a shelf body, a mounting mechanism, and a support arm. The mounting mechanism includes a flexible bottom layer, a middle layer, and a top layer arranged sequentially from the supporting surface outwards, with at least one suction cup on the back of the flexible bottom layer. The mounting mechanism also includes a locking assembly. The suction cup contains a suction status indicator structure. This invention actively and effectively resists the warping of the mounting plate ends caused by load torque, solving the problem of progressive failure of suction cup fixing devices due to edge air leakage. The integrated suction status indicator structure inside the suction cup converts the invisible negative pressure decay process into an intuitive color signal, allowing users to tighten it in time before loosening or falling.

The utility model discloses a synchronous belt surface glue edge grinding machine, which relates to the technical field of synchronous belt production, and comprises a transverse rail, a rotating seat rotatably connected to the upper side of one end of the transverse rail, a plurality of synchronous wheels with different wheel diameters arranged on the front side of the rotating seat, a movable seat which slides left and right arranged on the upper side of the transverse rail, and a movable seat which slides left and right arranged on the movable seat. A vertical seat is fixedly installed on the upper side of the movable seat, a sliding seat sliding up and down is arranged on the vertical seat, and a plurality of synchronous wheels with different wheel diameters are correspondingly arranged on one side of the sliding seat. According to the synchronous belt tensioning device, a plurality of adjustable assemblies such as the moving seat, the sliding seat and the rotating seat can be adjusted according to synchronous belts of different specifications, the synchronous belt tensioning device adapts to the synchronous belts of different lengths and widths, the universality of the device is improved, the synchronous belts can be accurately tensioned through cooperation of the synchronous wheels, the clamping blocks and the sliding seat, and the production efficiency is improved. It is guaranteed that the synchronous belt is in an ideal tension state all the time in the edge grinding process, the uniform edge grinding effect is provided, synchronous belts of different specifications can be precisely processed, and various production requirements are met.

This invention relates to the field of new energy power generation and energy storage, and in particular to a method and system for limiting power distribution, comprising: setting a total power distribution capacity limit value, wherein the total power distribution capacity limit value is an unsigned value representing the maximum absolute value of power allowed at the grid connection point; calculating in real time the total active power at the connection point between the new energy grid-connected equipment and the power distribution facilities; dynamically calculating the power output limit value of the new energy grid-connected equipment based on the total power distribution capacity limit value and the total active power through a closed-loop control algorithm, wherein the power output limit value includes a positive power limit value and a negative power limit value; and controlling the output power of the new energy grid-connected equipment using the positive power limit value and the negative power limit value as boundaries. This invention, through detailed parameter settings, signal processing, algorithm calculation, and hardware control procedures, fully realizes bidirectional power distribution limitation, effectively protecting the safety of user-side power distribution facilities.

The application discloses a data center container dehumidification and cooling system and method based on waste heat driving, and relates to the technical field of data center humidity control and refrigeration. The application discloses a data center container dehumidification and cooling system and method based on waste heat driving, and relates to the technical field of data center humidity control and refrigeration. The application discloses a data center container dehumidification and cooling system and method based on waste heat driving, and relates to the technical field of data center humidity control and refrigeration. The application discloses a data center container dehumidification and cooling system and method based on waste heat driving, and relates to the technical field of data center humidity control and refrigeration. The application discloses a data center container dehumidification and cooling system and method based on waste heat driving, and relates to the technical field of data center humidity control and refrigeration. The application discloses a data center container dehumidification and cooling system and method based on waste heat driving, and relates to the technical field of data center humidity control and refrigeration. The application discloses a data center container dehumidification and cooling method based on waste heat driving, and relates to the technical field of data center humidity control and cooling.

This invention relates to an intelligent water level and flow rate monitoring system and method based on spatiotemporal prediction and quantum sliding window. The system includes a sensor layer, a data processing layer, an intelligent algorithm layer, and an application service layer. Water level and flow rate point cloud data are synchronously acquired using a 79G millimeter-wave radar array. After preprocessing and feature extraction, a spatiotemporal joint prediction model intelligently completes the data by incorporating temporal trends, spatial consistency, environmental factors, and historical patterns when data is missing. Furthermore, a quantum-heuristic sliding window is used to adaptively filter and handle anomalies in the data through intelligent transformations of superposition, collapse, and tunneling states. This invention achieves integrated, high-precision, synchronous monitoring of water level and flow rate, solving the problems of discontinuous data, insufficient accuracy, poor adaptability, and high cost in traditional water level and flow rate monitoring, significantly enhancing the reliability, adaptability, and intelligence level of hydrological monitoring.

The application discloses a robot adaptive variable impedance grasping control method and system based on visual-tactile fusion flow feature perception, and the method comprises the following steps: acquiring a real-time image flow and a force signal, calculating a target net optical flow vector according to the real-time image flow, extracting a high-frequency vibration feature according to the force signal, and obtaining a contact force change rate according to the force signal; performing Kalman filtering state estimation according to the target net optical flow vector and the high-frequency vibration feature, obtaining a sliding precursor confidence, and extracting a divergence feature of the target net optical flow vector; discriminating a grasping contact state according to the sliding precursor confidence, the divergence feature and the contact force change rate; generating a corresponding impedance control instruction according to the discrimination result, and adjusting the stiffness and the virtual equilibrium point position of a mechanical arm and a gripper according to the impedance control instruction. The application solves the problems of perception lag, lack of protection of fragile objects and stiffness adjustment rigidity in traditional grasping control.

This invention relates to the field of environmental water conservancy and ecological restoration technology, and discloses a method for evaluating the effectiveness of river restoration based on multi-source data. The method includes: collecting target and measure-type indicator data; preprocessing the data; dividing the indicators into time-series and non-time-series types; applying exponential time decay weighting to the time-series indicators to generate time-series characteristic weighted indicators; performing robust standardization of the median absolute deviation with the non-time-series indicators to generate a standardized indicator dataset; calculating the proportion and information entropy of each standardized indicator within each sample to construct the total information entropy; calculating the residual average sum using the equally weighted average as the measured effectiveness value and the initial weighted average as the simulated effectiveness value; constructing a joint loss function; solving for the function with the goal of minimizing the joint loss function to generate the optimal weights for each standardized indicator; and finally calculating a comprehensive restoration effectiveness index to quantitatively evaluate the river restoration effect. This invention enables quantifiable and comparable evaluation of restoration effects in different watersheds and at different times.

The utility model discloses an absorption tower slurry PH and density measuring device which comprises an absorption tower, a first drainage pipe and a second drainage pipe which are communicated with the absorption tower are installed at the bottom of the absorption tower, and the first drainage pipe is connected with a first sampling pipe and connected to an inlet in the bottom of a first measuring tank through the first sampling pipe. An outlet in the top of the first measuring tank is connected with a first liquid outlet pipe and connected to a discharge pipe through the first liquid outlet pipe, a first PH meter is inserted into the top of the first measuring tank, the second drainage pipe is connected with a second sampling pipe and connected to an inlet in the bottom of the second measuring tank through the second sampling pipe, and an outlet in the top of the second measuring tank is connected with a second liquid outlet pipe. The second measuring tank is connected to the discharge pipe through a second liquid outlet pipe, and a second PH meter is inserted into the top of the second measuring tank. The slurry in the first measuring tank and the second measuring tank adopts a bottom-in and top-out mode, so that the drained slurry has stability, timeliness and representativeness, and the measurement accuracy of the first PH meter and the second PH meter is guaranteed.

This invention relates to the field of mineral water processing, and more particularly to a mineral water processing system and method based on online water quality monitoring and feedback control. The system includes: a water quality monitoring module for monitoring raw water; a finished product monitoring module for monitoring finished water and calculating feedback correction amounts; a feedback adjustment module for optimizing the theoretical feedforward addition calculation process and generating composite control commands; a command optimization module for optimizing the composite control commands; a processing adjustment module for executing the optimized composite control commands and for real-time zero-point and range calibration of the metering pump; and a feedback optimization module for optimizing the command optimization process. From water quality monitoring to feedback processing, closed-loop control is achieved. A feedforward-feedback composite control is employed, with the feedforward path compensating for raw water quality in advance; the feedback path corrects water quality deviations, achieving autonomous adjustment; and the feedback optimization module continuously optimizes the system using production data, exhibiting continuously evolving intelligent characteristics.

The utility model provides a multi-purpose adjusting supporting piece, which belongs to the technical field of camera equipment accessories and comprises a bearing mechanism and a supporting mechanism, and the bearing mechanism is rotatably connected with the supporting mechanism through a shaft lever. The bearing mechanism comprises a supporting plate and a through hole formed in the supporting plate. According to the utility model, the rotating mechanism of the shaft lever is matched with the storable adjusting component to realize single-hand quick angle adjustment, so that the tedious operation that a traditional bracket needs to be repeatedly disassembled is thoroughly eliminated; a magnetic attraction and mechanical double-fixing scheme not only ensures strong attraction on a metal surface, but also provides reliable fixation on a non-metal surface through an inclined plane locking mechanism of the clamping sheet, so that the problem of easy falling is solved; the supporting shell sleeve and the clamping sleeve which are designed in a modularized mode can be matched with cameras of different models, a triangular supporting structure which is unfolded rapidly is matched, the product has professional stability and scene adaptability while maintaining portability, and the efficiency and safety of outdoor sports shooting are remarkably improved.

The utility model discloses an automatic glue grabbing device suitable for film delivery head, including mounting bracket, the mounting bracket lower surface is connected with a plurality of first connecting seat, and the first connecting seat is hinged with second connecting seat, and the second connecting seat is installed with glue grabbing subassembly, and glue grabbing subassembly includes first mounting plate, and the second connecting seat is connected with first mounting plate, and the first mounting plate lower surface is connected with second connecting plate, and both sides of second connecting plate all are provided with air cylinder, and one side of air cylinder is provided with first mounting plate, the utility model discloses glue grabbing subassembly through fixed nail prepositioning film, prevents the slippage deviation, cooperation air cylinder drive hook claw dish rotation, make hook claw body accurate hooking film, ensure that grab firm, the utility model discloses whole structure is simple, can be linked with automatic equipment and realizes whole process unmanned operation, adapts to different specifications film, effectively solved the existing glue grabbing device easy to slip, the problem of not accurate positioning, has stability and universality.

The utility model provides a kind of loading equipment for rammed earth board production, it is related to loading equipment technical field, including installation base, it further includes the end outer side of the installation base of connecting belt setting, feeding hopper is set to one side of the connecting belt, driving member is set to one side of the connecting belt, for driving the vertical movement and rotation of the feeding hopper, top plate is set to the end outer side of the top plate, inverted plug and plug block can be conveniently separated, and feeding hopper can push plug block to rotate to suitable angle, ensure that self smoothly overturns and unloads, transport stability and unloading smooth are considered, adapt to the demand of efficient, stable transfer of material in rammed earth board production, while keeping work environment neat.

A crystal annealing apparatus and method are disclosed. The apparatus includes an annealing mechanism comprising a heating component forming an annealing chamber; a heat-preserving mechanism installed inside the annealing chamber, also having a heat-preserving chamber; a crucible body installed within the heat-preserving chamber; and a silicon carbide powder buffer filling the inner cavity of the crucible body, with multiple crystal accommodating spaces within it. The method involves filling the inner cavity of the crucible body with a silicon carbide powder buffer, and arranging multiple crystals spaced apart within the buffer; placing the crystal annealing apparatus carrying the crucible body in a crystal growth furnace; and annealing the crystal using a temperature gradient heating and staged differential rate cooling process to reduce internal thermal stress in the crystal. Simultaneously, the thermal stability and uniform thermal conductivity of silicon carbide powder buffer the thermal stress generated by temperature changes in the crystal. This invention effectively optimizes crystal stress, improves crystal quality, and effectively solves the technical problems of crystal cracking, stress superposition, high dislocation density, and insufficient purity.

This invention discloses a long-acting and low-immunogenic recombinant fusion protein, NGFgf21, and its applications, belonging to the field of pharmaceutical bioengineering technology. The long-acting fusion protein NGFgf21 provided by this invention contains five stability-enhancing mutation sites and is linked to the ABD094 and Fgf21 mutants via a 20-amino acid flexible peptide linker. NGFgf21 can bind to human serum albumin to form a complex of approximately 93 kDa, exceeding the glomerular filtration threshold and significantly prolonging its in vivo half-life. Experiments show that a weekly dose of 5 mg / kg effectively improves the obesity phenotype in mice. This invention is the first to utilize the low-immunogenic ABD094 fusion technology, providing a novel protein drug candidate with both stability and long-acting properties for metabolic diseases such as obesity, showing promising prospects for biomedical applications.

The application discloses a tunnel surface subsidence based step-by-step construction device and construction method. The application belongs to the technical field of tunnel construction. The device comprises a plurality of top support molds, a plurality of insertion point type insertion units are arranged between two adjacent top support molds, each top support mold and each insertion point type insertion unit are installed on an assembly beam, a driving type transmission mechanism for driving the top support mold to move along the length direction of the assembly beam is installed on the assembly beam, and a plurality of vertical hydraulic cylinders are installed on the lower end of the assembly beam along the length direction of the assembly beam. The method is to apply the above device to step-by-step reinforcement of the tunnel. The core design of active support, multi-point reinforcement and step-by-step advancement is adopted in the application, so that the whole process of surface subsidence in tunnel construction is realized, and fine control is achieved. The application has stability, high efficiency, safety and economy, and is especially suitable for tunnel construction under complex geological conditions such as karst, and can effectively guarantee the engineering quality and the safety of the surrounding environment.

This utility model discloses a leakage-proof fixing device and electrical box, including a mounting bracket with at least one mounting hole; a quick-connect base made of elastic insulating material, which passes through the mounting hole; and a fastener for fixing electrical equipment. When the fastener is assembled with the quick-connect base, the quick-connect base at least partially expands radially and locks into the mounting hole. This utility model achieves insulation isolation between the electrical equipment and the mounting bracket through elastic insulating material, solving the problem of "indoor inverters becoming electrified due to lack of grounding". The radial expansion locking structure ensures dual reliability of mechanical fixing and electrical insulation, eliminating the need for an additional grounding device, simplifying the structure and reducing costs, while providing both stability and safety.

The invention relates to the field of path planning, and particularly provides an AGV path re-planning method and system based on a conflict relation, and the method comprises the steps: 1, generating an initial solution path for each AGV through a rapid MAPF solver; step 2, detecting and storing a conflict relation between any two AGVs according to the starting point position and the ending point position of the AGVs; step 3, constructing a modification set according to the conflict relationship among the AGVs; 4, fixing the paths of all AGVs outside the modification set, regarding the paths as dynamic obstacles, and re-planning the paths of the AGVs in the modification set by using an optimal path planning algorithm; and 5, updating the current path by using the new path obtained in the step 4, and repeatedly executing the steps 2 to 5 until an iteration termination condition is met. According to the method, the modification set is accurately constructed based on the conflict relation and iterative re-planning is carried out, so that the average solution quality is improved while the real-time performance is kept.

The invention relates to a barrel type foundation structure anticorrosive coating thickness control method and device considering a multi-factor coupling effect and a medium. The method comprises the steps that S1, a coating dry film thickness prediction model is constructed based on a simulation data set and a historical data set; s2, acquiring a real-time environment wind speed and a spraying distance, and querying based on a pre-configured response surface database to obtain a reference spraying pressure and a reference nozzle walking speed; s3, on the basis of the coating dry film thickness prediction model, a spraying pressure correction sequence and a nozzle walking speed correction sequence are obtained by minimizing film thickness control deviation and fluctuation targets of spraying pressure and nozzle walking speed in a period of time in the future; and S4, respectively superposing to the corresponding reference spraying pressure and the reference nozzle walking speed to obtain the target spraying pressure and the target nozzle walking speed. Compared with the prior art, the method has the advantages that the film thickness prediction precision under variable working conditions is improved, and accurate closed-loop control of the coating thickness is realized.

The application relates to the technical field of logistics management, and discloses a temperature control and scheduling method and system for temperature-controlled logistics boxes based on thermal budget, which comprises the following steps: step 1, multi-source data acquisition; step 2, thermal budget calculation and control optimization; step 3, cloud collaborative scheduling and dynamic path planning; and step 4, strategy execution, state feedback and fault-tolerant control. Through the temperature control and scheduling integrated scheme for temperature-controlled logistics boxes based on thermal budget, the temperature accurate regulation and control capability and the dynamic scheduling efficiency of the temperature-controlled logistics boxes are significantly improved, the problems of large temperature fluctuation, scheduling response lag and high energy consumption of the traditional temperature-controlled logistics boxes in multi-scene transportation are solved, the stable maintenance of the temperature in the box and the optimal configuration of logistics resources are realized based on the dynamic algorithm and multi-node collaborative scheduling based on thermal budget, and the temperature control precision and transportation energy efficiency are effectively balanced.

The utility model discloses a cross beam type product storing, taking and transferring tool which achieves efficient layered storage and convenient storing and taking of cross beam type products through a stable bottom layer supporting structure and a multi-layer dynamic supporting structure flexibly arranged above the bottom layer supporting structure. According to the bottom layer supporting structure, the two ends of a cross beam product are directly supported by two first transverse pipes arranged in parallel, the bearing stability of the foundation is ensured, the dynamic supporting structure achieves dynamic adjustment through a hinged second transverse pipe, and when the bottom layer product needs to be stored and taken, the second transverse pipe can be turned upwards to be in a vertical state to completely avoid the operation space; when the products on the upper layer need to be stored and taken out, a supporting plane parallel to the bottom layer can be formed only by horizontally putting down the second transverse pipe, multi-layer storage in a limited space is achieved, the space utilization rate is remarkably increased, the products on different layers can be stored and taken out through simple overturning operation, and the working efficiency is greatly improved; and the device is particularly suitable for multi-layer storage and carrying scenes of cross beam products.

The present application provides a kind of irradiation crosslinking collagen injection filling agent and its preparation method and purposes.The collagen injection filling agent includes collagen gel microparticle, the collagen gel microparticle has porous structure;The collagen gel microparticle has connected fiber structure, the fiber structure is formed by collagen self-assembly, and the fiber structure includes fiber bundle and / or fiber mesh lamellar structure;The collagen gel microparticle in the collagen injection filling agent of the present application has the fiber structure formed after collagen self-assembly, i.e. collagen is spontaneously assembled from collagen molecule to fiber bundle and fiber mesh lamellar structure, and the degradation rate is delayed.The fiber network structure of the present application has good mechanical support and slow degradation rate, and simulates the three-dimensional microenvironment of natural extracellular matrix (ECM), promotes cell adhesion proliferation and tissue regeneration.The fiber structure of the present application is beneficial to the crawling proliferation of cells, and promotes the regeneration and repair of skin cells.

The invention relates to an intelligent alignment compensation method for assembly of a liquid crystal panel and a backlight module, and aims to solve the problems of dynamic pose deviation and weight mismatch caused by material batch difference, nonlinear deformation and environmental factors in a high-precision fitting process. According to the core technology, an industrial camera array and a multi-source sensor are used for collecting multi-dimensional micro texture and environment data, a fingerprint spectrum of intrinsic deformation characteristics of a material is established in a fusion mode, spectrum matching and weight self-adaptive calibration are carried out in combination with real-time working conditions and visual feedback, and six-degree-of-freedom micro dynamic correction is achieved through FPGA acceleration driving control. According to the scheme, the sub-pixel-level precision in the attaching process of the liquid crystal panel and the backlight module is effectively improved, the nonlinear deformation trend of materials is restrained, the control instruction response speed is optimized, continuous and accurate calibration of self-adaptive compensation weights among batches is guaranteed, and the process consistency and the automation level are improved.

This invention relates to the field of microbial inoculants, and particularly to a compound inoculant for controlling soil-borne diseases in farmland based on endophytic bacteria, and its preparation method. The compound inoculant is composed of a main inoculant, auxiliary inoculants, and a fungicide. The main inoculant includes *Talaromyces sp. strain HBUM07170*, *Rhizobium sp. NXC24*, and *Methylobacterium brachiatum*, while the auxiliary inoculants include *Mycobacterium sp.*, *Caulobacter sp.*, *Penicillium sp.*, and *Pyronema omphalodes*, with each strain having a concentration of not less than 10%. 8 The concentration of CFU / ml is 1:1 (main bacterial agent mixture to auxiliary bacterial agent mixture), and tebuconazole is used as the fungicide. During preparation, each bacterial strain is activated and cultured separately, then mixed according to the specified volume ratio before adding tebuconazole and stirring to dissolve. This invention's compound bacterial agent exhibits synergistic effects among the bacterial strains, effectively antagonizing Fusarium oxysporum, reducing the incidence and mortality of lily wilt, and promoting plant growth. It combines biological control with chemical-assisted antibacterial effects and can be used in the preparation of control formulations for soil-borne diseases in farmland and lily wilt.

The utility model belongs to the technical field of sleep tools, and particularly relates to a pillow with a supporting state adjustable function. The pillow structurally comprises a bottom plate, an elastic plate arranged on the bottom plate and used for supporting the head, and two inclined plane frame body units arranged on the bottom plate, connected with each other in an inserted mode and used for adjusting the supporting height in the mode that supporting inclined planes get close to each other or get away from each other. The rod body units are arranged on the supporting slopes of the two slope frame body units and used for supporting the neck. The pillow has the beneficial effects that the pillow is relatively simple in structural composition, so that the use difficulty and the failure rate are reduced, meanwhile, the neck supporting height can be actively adjusted at least at the positions of the rod body units, and the practicability of the pillow is improved.

The application discloses a starch-anthocyanin compound and a preparation method and application thereof. The compound is obtained by blending high amylose starch after partial gelatinization with anthocyanin, then retrogradation, dialysis, drying, crushing and sieving, wherein the amylose content of the high amylose starch is more than 50% of the total mass of the starch; the starch / anthocyanin compound is in a granular form, and the granules are in a state of concave and mutual aggregation or adhesion. The high amylose starch is used to replace common starch, and the high amylose starch is partially gelatinized, so that the granular form of the starch is retained, and the hydrophobicity of the starch granules is enhanced, then the starch is compounded with anthocyanin, and the obtained compound has the stability, hydrophobicity and pH response color changing capacity; and the compound can be directly used for freshness indication of food.