76results about How to "Realize dynamic regulation" patented technology

The invention discloses a lithium iron phosphate positive electrode material rich in oxygen vacancies and a preparation method and application thereof.The preparation method of the lithium iron phosphate positive electrode material rich in oxygen vacancies has the advantages that the number of heating times can be set in a programmable mode, the heating and cooling speed is high, and the heat treatment time is short; the volatilization amount of the lithium salt is small, and the method is more economical and environment-friendly; according to the method, a programmable constant-current power supply is used for electrifying and heating the carbon-based Joule thermal material, and the carbon-based material is used as a heating stage to realize ultrafast synthesis of the lithium iron phosphate material through a physical contact heat transfer effect; and the oxygen vacancy content can be adjusted by regulating and controlling parameters such as temperature and time. The heat treatment is performed in a specific atmosphere (such as vacuum, inert gas, reducing gas and oxidizing atmosphere), so that the reoxidation of the oxygen vacancies can be reduced, and the formation and the stabilization of the oxygen vacancies are facilitated; the adjustable and controllable range of the oxygen vacancy concentration in the lithium iron phosphate material prepared by the preparation method disclosed by the invention is 2.198 E12 to 7.382 E13Spins / mm < 3 >.

The invention discloses a display, a driving method and device and a storage medium, and belongs to the technical field of display. The display comprises a time schedule controller and a source driver. The time schedule controller is connected with the source driver through at least two data transmission channels; the time schedule controller is used for enabling at least one of the at least two data transmission channels according to a first display parameter. According to the method, the number of enabled data transmission channels between the time schedule controller and the source driver can be dynamically adjusted.

The invention discloses a food freezing system based on electrode coupling and a multi-stage electric field and a freezing method thereof. The system comprises an electric field generating device (1), a refrigeration house (2), a space plate type discharge electrode (3), a metal frame discharge electrode (4) and the like. According to the freezing method, a discharge electrode is used for being coupled with an electric field, a special'superposed electric field effect 'is generated, the freezing efficiency is remarkably improved, heat conduction inside and on the surface of food can be accelerated, uniform and rapid crystallization of water is promoted, large ice crystals are effectively prevented from being formed, and therefore damage to cell structures is reduced. Compared with a traditional freezing method, the freezing time can be shortened by 15%-30%, and the juice loss rate is reduced by 3%-6%. Due to the synergistic effect of the double electric fields in different stages, the food can be quickly frozen under lower voltage, and the comprehensive energy consumption can be reduced by 15-30% while the safety is ensured. The method is suitable for large-scale food freezing application, and remarkable technical progress and economic benefits can be brought to the food freezing industry.

The invention discloses a polymerization drying control method and related equipment, and the method comprises the steps that a drying tower parameter set of a polymerization drying system is obtained, and the drying tower parameter set comprises operation parameters with labels; training the initial time sequence model by using the drying tower parameter set to obtain a target drying model; acquiring real-time operation parameters of the aggregation drying system and attribute parameters of the to-be-dried object; the attribute parameters and the real-time operation parameters are input into a target drying model to be processed, and target operation parameters are obtained; and controlling the aggregation drying system based on the target operation parameters so as to perform aggregation drying on the to-be-dried object. The problems that an existing material drying device is basically in a pure manual control state, the complexity of the drying process is increased due to manual control, drying variable coupling is serious, the control difficulty is high, and the drying efficiency is low are solved.

The invention discloses a magnetic-thermal response type phononic crystal plate device and an elastic trough state transmission characteristic regulation and control method thereof, and relates to the technical field of novel artificial metamaterials. The magnetic-thermal response type phononic crystal plate device comprises a magnetic-thermal-elastic phononic crystal plate and a plurality of magnets and thermoelectric pieces; the phononic crystal plate is formed by arranging a plurality of unit cell structures, and each unit cell is composed of a magnetostrictive column and an aluminum plate; the external magnetic field is regulated and controlled by adjusting the distance between the magnet blocks; the temperature of different magnetostriction columns is controlled by controlling the thermoelectric pieces, so that the adjustment of a temperature field is realized; a broadband elastic trough Hall interface state is induced to be generated, and dynamic adjustability of magnetic-thermal dual excitation to a trough topology transmission path is achieved on the premise that the structure is not changed. The technical problem that the frequency of the elastic trough Hall interface state and the topological transmission path are difficult to dynamically regulate and control on the premise that the structure of a traditional topological photonic crystal is not changed is solved.

The invention discloses an automobile part intelligent production control and quality early warning system based on an AI model. Comprising a data acquisition module, a production process monitoring module, an AI analysis engine module, an adaptive control module, a quality early warning module, an equipment collaborative scheduling module, a data governance and model training module, a user permission and audit module and a remote operation and maintenance and knowledge precipitation module. According to the system and the method, an artificial intelligence algorithm and an industrial automation control technology are fused, and deep perception, dynamic regulation and control and defect pre-recognition of a production process are realized. The prediction precision of the method is superior to that of a traditional statistical process control method in a plurality of actual production scenes.

The invention relates to an electric control terahertz double-frequency phase modulator which comprises a sapphire substrate and a metasurface structure resonance array located on the surface of the sapphire substrate. Each resonance unit comprises a T-shaped metal resonator, an inverted T-shaped metal resonator and a square split ring resonator. The middle electric control phase change patch is embedded in a gap between the T-shaped resonator and the inverted T-shaped metal resonator, and the right electric control phase change patch is embedded in an opening of the split ring resonator. The two sides of the metasurface structure resonance array are each fixedly provided with an electrode which is connected with the positive electrode and the negative electrode of the direct-current power source. The phase modulator provided by the invention can realize dual-band, large-bandwidth and more than 100-degree phase modulation through power-on, and the adjustable maximum phase exceeds 140 degrees. The terahertz dual-frequency phase modulator has a wide application prospect in the fields of terahertz phased array radar, terahertz communication, terahertz imaging and the like.

The invention relates to a color router for photon momentum control and a preparation method thereof. The color router is composed of a metal nano antenna, a carbon nano tube film and a printed circuit board. When an electron beam excites the edge of the metal nano antenna, green light and red light components emitted by a far field are distributed along different propagation directions, and when an impact position is located at the center, a non-split pattern is generated. In addition, the conversion of the characteristic radiation direction can be triggered by controlling the electron beam excitation position. The active modulation of the dichroic photon splitting can be effectively realized by adjusting the excitation position and changing the far-field interference of the dipole moment and the quadrupole moment. According to the invention, a pleasant platform is provided for controlling the photon momentum on the nanoscale, and a way is laid for the quantum information technology and the integrated photon system in the future.

The invention discloses a cement stabilized macadam test piece and a preparation method thereof, and belongs to the technical field of traffic civil engineering. The test piece is prepared from the following components in parts by mass: 85 to 92 parts of graded aggregate, 6 to 12 parts of composite cementing material and 0.3 to 0.8 part of special admixture; the graded aggregate is of a skeleton-transition-filling three-stage structure, and the filling aggregate contains surface modified silicon carbide microbeads; and the special additive contains a slump-retaining polycarboxylic acid water reducing agent and a hydroxypropyl methyl cellulose-xanthan gum composite adhesive. The components of the test piece have a synergistic effect, and through multi-dimensional synergy of aggregate grading, modified filler and admixture regulation and control, the problems of large-particle-size broken stone sinking, uneven aggregate distribution and segregation, insufficient compactness and the like in the forming process of the cement stabilized broken stone test piece are effectively solved; the compactness, the mechanical strength and the durability of the cement stabilized macadam test piece containing the large-particle-size macadam are remarkably improved, and the composition materials of the cement stabilized macadam test piece can be used for base layer construction of high-grade highways and municipal main roads and meet the heavy-load traffic requirement.

This invention relates to the field of pole production and manufacturing execution management, and discloses an intelligent pole production execution management system based on the Internet of Things (IoT). The system includes a data acquisition unit, an edge processing unit, a cloud management platform, an intelligent analysis unit, and a human-machine interaction unit. The system collects data on raw material ratios, mold status, curing temperature, humidity, and other detection data through sensors. The edge processing unit identifies anomalies in real time and performs rapid adjustments. The cloud management platform generates a digital twin of the pole and combines it with an algorithm model to adaptively adjust curing temperature, minimize energy consumption, predict lifespan, predict production capacity, and assess mold lifespan. The human-machine interaction unit presents process information to operators through an augmented reality terminal and supports two-way feedback. This system enables real-time monitoring and closed-loop optimization of the entire pole production process, reducing energy consumption, improving consistency, extending service life, and significantly enhancing the intelligence and reliability of the production process.

The application relates to the technical field of semiconductor bridge electrostatic discharge protection and current protection, and discloses an electrostatic discharge and current protection circuit of a semiconductor bridge, which comprises an ESD protection circuit, a current protection circuit and an NMOS connected in parallel, the ESD protection circuit comprises a bidirectional transient suppression diode and a capacitor connected in parallel, the bidirectional transient suppression diode clamps a transient high voltage by breakdown conduction, the voltage is limited in a safe range, the capacitor reduces a voltage rising rate and suppresses overshoot by shunting and absorbing a transient current, the NMOS provides a low-resistance discharge path, and the voltage and current impact applied to the semiconductor bridge are reduced; the current protection circuit comprises a bidirectional rectifier circuit and a detection circuit; and the NMOS is connected between the detection circuits. The application can realize ESD protection and current protection of the semiconductor bridge, prevents current from damaging the structure, and guarantees the safety of the semiconductor bridge working in an electromagnetic and ESD environment.

The utility model provides a kind of circuit of automatic control computer power supply start, belong to computer power supply technical field, including power access module, power output module, backboard socket module, power access in position detection module, voltage division control module and triode switch module;Power access in position detection module is electrically connected with power access module by backboard socket module, the electric connection voltage division control module of power access in position detection module, voltage division control module is electrically connected with triode switch module by starting control bus, triode switch module is electrically connected backboard socket module, backboard socket module is electrically connected power output module.Power access in position detection module detects the in position condition of power access module, and exports detection signal, to utilize the conduction and cut-off of triode switch module dynamically control the power supply to electric computer, realizes the dynamic regulation and control to computer power supply work and standby state, greatly improves the power supply reliability to electric computer.

The invention discloses a radio frequency amplifier testing assembly, and relates to the technical field of radio frequency amplifier testing, and the radio frequency amplifier testing assembly comprises an automatic feeding and conveying assembly which is installed at the side end of a front end bottom noise detection assembly through a supporting framework and is used for forming constant-speed conveying operation according to the detection speed, under the cooperation of the integrated detection assembly, the dynamic balance adjustment assembly and the front-end ground noise detection assembly, the universality and the production efficiency of equipment are improved, the ground noise detection function and the radio frequency signal detection function are further integrated, the overall performance and the data accuracy of the test system are improved, synchronous detection of multiple parameters is achieved, and the test efficiency is improved. Compared with the prior art, the method has the advantages that the trouble of frequently replacing detection connection lines and adjusting instrument settings in the traditional test is avoided, the operation process is further simplified, the risk of manual operation errors is reduced, the method can automatically adapt to the change of input and output impedance and working frequency, time waste and operation complexity caused by the calibration process are reduced, and the test efficiency is improved.

The invention belongs to the field of hypersonic active flow control, and discloses a drag reduction and heat protection system and method for a hypersonic aircraft, and the method combines two active flow control methods of energy deposition and magnetofluid flow control. The excellent drag reduction characteristic of energy deposition can bring a good drag reduction effect to an aircraft, meanwhile, energy deposition can serve as an auxiliary ionization technology, and the magnetic control effect of magnetic fluid flow control is improved by improving the fluid conductivity; due to the outstanding thermal protection performance of magnetic fluid flow control, an excellent thermal protection effect is brought to the aircraft after heat flow increase in a part of time periods caused by the energy deposition process is treated; meanwhile, the problems of resistance impact and oscillation caused by pulse energy deposition are fully inhibited under the action of the magnetic field Lorentz force; by the adoption of the method, a better hypersonic speed drag reduction and heat protection effect is achieved, the resistance borne by the hypersonic speed aircraft can be effectively reduced, the heat protection capacity of the aircraft is improved, and the method has wide application prospects.

The invention provides a photovoltaic power station environment monitoring system, and relates to the technical field of power station environment monitoring, the photovoltaic power station environment monitoring system comprises a T-shaped base, a lifting cylinder and a regulation and control column, the lifting cylinder is connected to the T-shaped base in an up-down sliding manner, the regulation and control column is fixedly connected to the lifting cylinder, and the regulation and control column is rotatably connected with a bearing assembly; a solar radiation instrument, a wind speed and direction sensor, a temperature sensor, a recorder, a humidity sensor and an upper management machine are installed on the bearing assembly, and the upper management machine is electrically connected with the solar radiation instrument, the wind speed and direction sensor, the temperature sensor, the humidity sensor and the recorder. According to the invention, the technical problem that the actual condition of the photovoltaic power station environment cannot be comprehensively and accurately reflected due to single final monitoring data because the bracket in the prior art cannot adjust the height and the angle of the environment monitoring instrument body and the position of the environment monitoring instrument cannot be dynamically regulated and controlled is solved.

The invention provides a flow dividing pipe of a fin type heat exchanger, an air conditioner heat exchange system and a control method. The flow dividing pipe of the fin type heat exchanger comprises a flow dividing pipe body, and the flow dividing pipe body is provided with a connecting part and a liquid guiding part; the connecting part is provided with a plurality of drainage holes; a liquid guide through hole is formed in the liquid guide part, a plurality of hollow liquid guide columns are arranged in the liquid guide through hole, and the liquid guide columns are communicated with the drainage hole; a blocking piece and a rotating shaft are further arranged in the liquid guide through hole, the blocking piece is arranged on the side, away from the connecting part, of the liquid guide column, and the rotating shaft is used for driving the blocking piece to rotate so as to cover or open the liquid guide column, so that the drainage hole is opened or closed. Through mutual cooperation of the liquid guiding column, the blocking piece and the rotating shaft, dynamic regulation and control of a flow path are achieved, different requirements of refrigeration and heating can be met without setting a flow path structure, the occupied space of a heat exchange system is saved, the flow dividing pipe can be widely applied to various air conditioners, and the market competitiveness of the air conditioners is improved.

The invention discloses a wide-working-condition and high-stability two-phase experiment circulating system and a testing method thereof, and relates to the field of electronic device heat management, and the experiment circulating system comprises a pumping unit, a flow control and pressure stabilization unit, a pressure control unit, a temperature control unit, a condensation unit and a data acquisition unit. According to the experimental system, a wide-working-condition and high-stability two-phase flow cycle test environment is realized through cooperation of the pumping unit and the flow control and pressure stabilization unit, the flow heat exchange performance of the two-phase flow heat exchanger at different inlet flows, supercooling degrees and dryness can be actually tested, and multi-dimensional data such as temperature, pressure and flow state of each key node in a loop can be monitored in real time; the comprehensive performance of the heat exchanger is completely reflected, and experimental basis and design reference are provided for operation of a two-phase flow cooling system of an electronic device and optimization design of the heat exchanger.

The invention discloses anti-jelly positive electrode slurry and a method thereof, a sodium ion battery and a preparation method of the sodium ion battery, and aims to solve the problems that the existing sodium ion battery positive electrode slurry is easy to jelly, poor in flowability and low in coating uniformity. The slurry is composed of an O3 type layered oxide positive electrode material, a conductive agent, a binder, a solvent and a carboxyl-containing organic acid additive, and residual alkali in a slurry system is gradually neutralized by adding 0.01%-2% of the total weight of the organic acid additive, so that the acid-base balance of the slurry in the preparation and coating processes is ensured, and the jelly phenomenon is prevented. According to the scheme, while the fluidity of the slurry is maintained, the density consistency of the coating surface of the pole piece is controlled within + / -5%, so that the internal resistance, the rate capability and the cycle life of the battery are improved, the additive is completely decomposed in the formation stage, and no adverse effect is caused on the battery performance. Compared with the prior art, the scheme has the advantages of simplifying the process, improving the coating uniformity, remarkably enhancing the long-term stability of the battery and the like, and is suitable for large-scale industrial application of the sodium ion battery.

The application discloses an elevator speed regulation system based on light energy power generation, which comprises a vibration detection unit, which detects an elevator vibration signal, and sends the elevator vibration signal to a microprocessor unit connected thereto to trigger a wake-up interrupt; the microprocessor unit is connected with a power management unit, the power management unit is respectively connected with a light energy collection unit and an energy storage unit, the light energy collection unit charges the energy storage unit through the power management unit; the microprocessor unit is connected with an elevator main control subsystem, the microprocessor unit collects voltage and speed data and sends the voltage and speed data to the elevator main control subsystem to generate a running speed curve, and regulates the speed according to the running speed curve. Through light energy power supply, and in combination with light energy power and speed, the regulation frequency and the regulation mode in the speed regulation process are judged, dynamic regulation is realized, an elevator regulation system without additional power supply and post-maintenance is provided, and safe, efficient and comfortable operation of the elevator is ensured.

The application relates to a temperature-sensitive adjustable heat rectification porous material and a preparation method thereof, and belongs to the technical field of functional materials and thermal management materials. The temperature-sensitive adjustable heat rectification porous material comprises an asymmetric porous polymer skeleton and a temperature-sensitive polymer network embedded in the interior of the polymer skeleton, wherein the asymmetric porous polymer skeleton has a pore size difference in the thickness direction, one side of the asymmetric porous polymer skeleton is a small-pore structure, and the other side is a large-pore structure. The temperature-sensitive polymer network is introduced into the asymmetric porous polymer skeleton, so that the heat rectification is changed from a static behavior to a dynamic adjustable behavior. Under a low-temperature condition, the temperature-sensitive polymer absorbs water to expand, the pore size of the large-pore side is reduced, the pore size difference is reduced, and the heat rectification ratio is reduced; under a high-temperature condition, the temperature-sensitive polymer is dehydrated to shrink, the pore size of the large-pore side is increased, the pore size difference is increased, and the heat rectification ratio is increased. Through the mechanism, the heat rectification ratio can be adjusted and changed in the range of 25-40 DEG C, and the heat regulation capacity is remarkably improved.

This invention relates to the field of agricultural machinery technology, and discloses an intelligent agricultural power machine for planting on barren hills and slopes and its planting method. The intelligent agricultural power machine for planting on barren hills and slopes includes a drive vehicle, a planting mechanism mounted on the drive vehicle, and a drilling mechanism mounted at the rear end of the drive vehicle. Tracks are provided at the bottom of the drive vehicle. The drilling mechanism includes a housing box, a hydraulic cylinder fixedly mounted on the top wall of the housing box, a mounting frame mounted inside the housing box, and a spiral drill rod mounted below the mounting frame. This invention achieves the function of pre-detection of underground obstacles at the drilling location by opening a hollow channel inside the spiral drill rod and embedding a telescopic probe, combined with the setting of a lifting drive component and a pressure sensor. By adopting the operation logic of detection before drilling, it can identify hard obstacles such as rocks and dense hard soil layers in the drilling path in advance, avoiding the spiral drill rod from directly drilling into obstacles and causing overload deformation or breakage, effectively reducing the probability of damage to the spiral drill rod.

The present invention discloses an automatic adjustment device for the lifting center of gravity for a micro crane, and relates to the technical field of high-altitude engineering operations. This solution adopts a combination of a passive damper and an active regulator, which can automatically match the optimal damping force according to the weight of the hoisted object, and realize dynamic adjustment of the damping force. Through the design of the bottom retaining frame and energy absorber of the load-bearing steel cable, the device can effectively reduce the center of gravity offset and swaying caused by the inertial force during lifting, and improve the safety and efficiency of the lifting operation. In addition, the device also specially considers the impact of strong winds or rapid movement on the lifting stability, and effectively absorbs and slows down the drastic changes in the center of gravity through the liquid viscosity damping mechanism of the active regulator. The implementation of this solution not only improves the operating performance of the micro crane, but also provides an innovative solution for the stability control of the lifting equipment.

The present invention provides a bioaerosol scene simulation system based on artificial intelligence, which relates to the field of aerosol detection technology, including: a constraint relationship determination module, which is used to perform inter-class interaction analysis and intra-class multiphase flow motion analysis to determine motion constraint relationships; a fitting field construction module, which is used to construct a fitting field; a simulation scene construction module, which is used to build a visual simulation scene; a diffusion behavior analysis module, which is used to perform motion diffusion behavior analysis based on fluid mechanics to determine the first scene simulation data; a scene simulation switching module, which is used to perform scene simulation switching and analysis to determine the second scene simulation data; a simulation result determination module, which is used to determine the scene simulation result. The present invention solves the technical problems that the prior art is difficult to accurately simulate the complex dynamic behavior of bioaerosols, and is difficult to meet the simulation requirements under different demand scenarios, resulting in poor simulation accuracy and operability.

The invention belongs to the technical field of automobile part mold surface enhancement, and particularly relates to a plasma immersion ion implantation method suitable for a mold coating, which comprises the following steps of: dynamically adjusting gas flow through a gas flow control module according to a vacuum degree requirement; an output result of the sputtering power optimization algorithm is input into the working temperature setting model; output data of the working temperature setting model are transmitted to the ion energy control system; output data and surface cleaning demand data of the ion energy control system are used for argon ion bombardment parameter optimization; output data and surface state data of the argon ion bombardment parameter optimization module are transmitted to a hydrogen etching process control system; and the output data of the hydrogen etching process control system is input into the composite film layer structure design module to realize the designed composite film layer structure. According to the invention, by introducing an immersion ion implantation technology, dynamic regulation and control of key parameters such as gas flow, sputtering power, working temperature and ion energy are realized.

The invention discloses a player emotion perception and experience optimization system based on artificial intelligence, and the system comprises an emotion data collection module which is used for collecting multi-modal emotion data of a player in a game process and carrying out the preprocessing of the multi-modal emotion data; the emotion recognition module is used for acquiring the current emotion category and emotion intensity of the player according to the multi-modal data; the experience optimization decision module is used for generating game experience optimization actions matched with the current emotion category and emotion intensity of the player; and the feedback adjustment module is used for adjusting the game environment parameters according to the optimization action. According to the method, the multi-modal emotion recognition and reinforcement learning decision technology is combined, fusion perception of the face image and the voice signal of the player is achieved, the optimal experience adjustment strategy is generated, the method has the advantages of being high in accuracy and high in personalized adaptation ability, and the immersion, interactivity and stability of a game system are remarkably improved.

The invention provides a hollow fiber nanofiltration membrane cross flow velocity dynamic regulation and control and energy consumption optimization method and system, and the method comprises the steps: building a mixed model of a CNN model and a long short-term memory (LSTM) model through data collection, and extracting the space and time characteristics of the operation parameters of a hollow fiber nanofiltration membrane system; and the concentration polarization index PI is introduced as a membrane surface state characterization index, and the membrane surface polarization degree is parameterized, so that the surface state of the nanofiltration membrane can be identified, and dynamic regulation and control of the cross flow speed of the circulating pump are realized in combination with a reinforcement learning reward function with flux improvement, energy consumption reduction and concentration polarization suppression as targets. Therefore, the operation energy consumption of the system is obviously reduced on the premise of ensuring the effluent quality and the membrane operation stability.

The application discloses a kind of based on edge computing's Internet of Vehicles low latency communication method and system, method includes: edge node obtains historical operation data and obtains real-time evaluation network communication link and the state parameters of edge node itself performance;Edge node is based on historical operation data and real-time state parameter prediction generates communication delay value, and real-time monitoring edge node resource to generate comprehensive load index;When communication delay value exceeds preset delay threshold or comprehensive load index shows that edge node is overloaded, triggers edge node to carry out task migration;Edge node selects another edge node as migration target node, and part of task is transferred to migration target node execution.The application identifies potential high latency state in advance by delay prediction, and then triggers migration, transfers task from high load node to low delay or resource sufficient target node, so as to significantly reduce average response latency at system level, improve service continuity.

The invention discloses a heating uniformity detection method and device, and belongs to the technical field of detection, and the method comprises the steps: obtaining a visible light image and an infrared image of a detected object; analyzing the obtained visible light image according to an optical flow algorithm, and calculating the local flow velocity; the obtained infrared image is analyzed according to the Planck's law of radiation, and the local temperature gradient is calculated; calculating a local uniformity score according to the calculated local flow velocity and local temperature gradient; calculating an overall uniformity score according to the local uniformity score obtained by step calculation; and judging the heating uniformity of the detected object according to the calculated overall uniformity score. And when the calculated overall uniformity score is within a preset threshold range, the detected object is heated uniformly. The problem that existing heating uniformity detection lacks heating uniformity comprehensive evaluation can be solved.

The invention relates to a transmission and reflection switchable frequency selective surface structure and a unit structure thereof, and the frequency selective surface unit structure comprises a first metal layer, a dielectric substrate and a second metal layer which are sequentially arranged from top to bottom. The first metal layer comprises a cross fractal structure, a cross connection square ring and four photodiodes, and the cross fractal structure is arranged on the upper surface of the dielectric substrate; the cross connection square ring is located on the outer side of the cross fractal structure. And the four photodiodes are respectively connected between the four end parts of the cross fractal structure and the cross connection square ring. The transmission mode and the reflection mode can be switched through switching on and switching off the photodiode, and the device is not prone to being damaged by heat, can be compatible with various electromagnetic scenes, is high in stability, can be flexibly switched between the transmission mode and the reflection mode at the frequency of 11.1 GHz, and achieves dynamic regulation and control of electromagnetic waves.

The invention provides a pH response type flow pattern regulator suitable for CO2 polluted drilling fluid as well as a preparation method and application of the pH response type flow pattern regulator. The pH response type flow pattern regulator is prepared from the following raw materials in parts by mass: 5 to 10 parts of acrylic acid, 10 to 20 parts of a pH response monomer, 10 to 30 parts of 2-acrylamide-2-methylpropanesulfonic acid, 5 to 20 parts of N-vinyl pyrrolidone, 0.1 to 1 part of an initiator and 100 to 200 parts of water. The flow pattern regulator disclosed by the invention can sense the pH value change of a drilling fluid system caused by CO2 pollution through a pH sensitive group in a molecular structure, and adaptively adjust the interaction strength with clay particles, that is, when the acidity is enhanced, the adsorption capacity is enhanced through group protonation, the aggregated clay particles are effectively dispersed, and the viscosity and shear force of the drilling fluid are reduced; in the pH value rising stage, the stability of the system is maintained through charge density regulation and control, and meanwhile, the filter loss is reduced by improving the mud cake structure.