35results about How to "Realize dynamic switching" patented technology

The invention provides an absorption and transmission integrated metamaterial structure with a wave-transparent window capable of being dynamically opened and closed, and belongs to the technical field of novel artificial electromagnetic materials, the metamaterial structure is formed by periodically arranging metamaterial structure units, the unit cycle of the metamaterial structure units is 15.0 mm, and the unit cycle of the metamaterial structure units is 15.0 mm. The metasurface comprises a double-layer spiral line chiral metasurface unit, a patch mesh complementary structure, a dielectric substrate layer, a carbon-based resistive film and a PIN diode, the metal structure layer comprises a chiral wave-absorbing layer and an active wave-transmitting layer, a plurality of dielectric substrate layers are arranged, the chiral wave-absorbing layer and the active wave-transmitting layer are respectively arranged on different dielectric substrate layers from top to bottom, the carbon-based resistive film is printed in a notch of the chiral wave-absorbing layer, and the PIN diode is printed in a notch of the active wave-transmitting layer. The wave-transparent window can be dynamically opened and closed in the wave band of 7-9.6 GHz, and efficient absorption can be achieved in the out-of-band frequency bands of 3-6 GHz and 11-21 GHz. The problems of wave absorption and wave transmission compatible design, dynamic opening and closing of the broadband wave transmission window and the like are effectively solved, electromagnetic and mechanical bearing functions are compatible, and the antenna can be applied to a multifunctional electromagnetic integrated system and an intelligent antenna housing system.

The invention discloses a multi-channel holographic method based on a total-space dynamic switching metasurface. The method comprises the following steps: 1) constructing a nano-structure unit; 2) optimizing the structure parameters of the nano structure unit according to the incident light wavelength lambda; and 3) constructing a nano-structure array, wherein the nano-structure array comprises a plurality of nano-structure units. According to the invention, left-handed / right-handed circularly polarized light is set to be incident to the nano-structure array, and dynamic switching of four holographic channels is carried out by rotating a mask plate in a reflection space; in a transmission space, the relative positions of the two layers of nano-arrays are changed by translating the second layer of nano-structure array to obtain dynamic switching of the three holographic channels, and the seven holographic channels can be subjected to mutually independent and continuous phase regulation and control through the nano-bricks. According to the invention, full-space information utilization can be realized, multi-channel dynamic switching is realized, the information capacity of the device is increased, the functionality of the device is improved, and the device can be applied to the fields of large-capacity optical information storage and coding and the like.

The invention discloses a self-cleaning heat exchanger with a high ventilation effect, which belongs to the technical field of ventilation and heat exchange and comprises a mounting shell with air outlet holes, a dust suction box and a lifter are mounted in a rectangular groove of the mounting shell, a cleaner is arranged on the lifter, a spiral pipe is arranged in an annular cavity of the mounting shell, and a plurality of mounting pipes are arranged in the rectangular groove of the mounting shell. A spiral stroke rod with a mounting plate slides in each mounting pipe, an unlocking structure is mounted on each mounting plate, a heat exchange pipe is connected between the mounting pipes and comprises a main pipeline and an auxiliary pipeline, a rotatable double-end gear is mounted on the main pipeline and meshed with a driving toothed bar, and a baffle structure is arranged at the communication position of the main pipeline and the auxiliary pipeline. A plurality of locking structures are installed on the two sides of the outer ring of the main pipeline, the spiral stroke rod can open or close a through hole, leading to the auxiliary pipeline, of the main pipeline, and heat transfer fins with adjustable angles are arranged on the two sides of the main pipeline. The heat exchange structure design and the integrated cleaning function can be optimized, and the ventilation and heat exchange performance is improved.

The invention relates to the technical field of electromagnetic wave polarization conversion, in particular to a transmission and reflection switchable multifunctional polarization converter based on a metasurface, and the polarization converter comprises four layers, namely a TOPAS (cycloolefin copolymer) dielectric layer, a crossed I-shaped metal resonance layer, a silicon dioxide dielectric layer and a metal-VO2 alternating grating layer from top to bottom. According to the design, conversion between a transmission function and a reflection function can be realized by changing the conductivity of vanadium dioxide: 1, in a transmission mode, incident polarized waves can be converted into cross polarized waves with broadband characteristics; and 2, in a reflection mode, incident linearly polarized waves can be converted into left-hand circularly polarized waves in a frequency band of 0.8 THz-1. 83 THz, and the incident linearly polarized waves can be converted into right-hand circularly polarized waves in a frequency band of 2.7 THz-3. 06 THz. According to the invention, the conversion functions are more, cross polarization conversion and linear-circular polarization conversion can be realized, and the engineering applicability is higher.

The application provides a kind of extreme disaster under power grid full life cycle carbon emission collaborative hierarchical control method, the method comprises: in extreme disaster scene, the original operation data and market economy data of microgrid global are acquired, and the original operation data and market economy data are denoised and reconstructed using variational mode decomposition algorithm, to obtain target data;Based on the target data, the power grid failure probability value is obtained by combining the preset interruption probability formula;The operation mode of microgrid is determined according to the power grid failure probability value;The control strategy of each operation mode is determined by solving the power grid failure probability value through objective function and constraint condition, and the operation state of the microgrid is adjusted based on the control strategy;Through the above technical scheme, the survivability and computing power service continuity of microgrid under extreme disaster are improved.

The invention provides an autonomous decision-making system and method for an unmanned ship, and relates to the field of intelligent control systems. The system comprises a decision-making machine module, a skill application module and a communication interaction module, wherein the decision-making machine module is used for receiving a navigation task instruction from a ground station, determining a corresponding navigation task type based on the navigation task instruction, generating a decision-making control instruction for uniformly scheduling navigation of the unmanned ship, and performing event generation, event judgment and interruption control based on navigation state information in the navigation process of the unmanned ship; the skill application module is used for executing corresponding navigation operation under the control of the decision control instruction, and monitoring and reporting navigation state information in the execution process; and the communication interaction module is used for realizing two-way communication among the modules. The method is used in the autonomous decision-making process of the unmanned ship, and solves the technical problem that when a navigation task is executed in a complex environment in the prior art, people cannot be flexibly simulated for decision-making control.

The invention belongs to the technical field of FPGA (Field Programmable Gate Array) reconfiguration, and discloses a remote dynamic reconfigurable system based on an FPGA and a reconfiguration method. According to the system, a RapidIO high-speed serial bus technology and a reconfigurable technology are fused, a DSP + FPGA + RapidIO-based framework is reconfigured and designed, non-remote dynamic reconfiguration and remote dynamic reconfiguration are realized, and the system specifically comprises a host, a DSP, an FPGA, a slave and a FLASH memory. According to the invention, the dynamic reconfigurable carrier board with a DSP + FPGA + RapidIO architecture is designed as the main control board, so that functional boards with different functional requirements can be hung, and high stability, high expansibility and high universality are achieved. The transmission bandwidth of the RapidIO bus can reach 6.5 Gbytes, and the realization of the remote dynamic reconfigurable system based on the SRIO bus provides a guarantee for realizing remote and rapid switching of complex algorithms by using a high-speed dynamic reconstruction technology.

The utility model discloses a kind of mothproof line boxes, including box, sponge block is arranged in the box;Cover is arranged on the box, the surface of the cover is provided with multiple groups of movable through holes, storage casing for placing insect-attracting agent liquid is arranged on the cover, the storage casing is set to the direction of box, the storage casing is provided with multiple groups of liquid outlet holes, the cover is provided with the presser that can be lifted, the presser is provided with barrier assembly, the barrier assembly cooperates with liquid outlet hole;The beneficial effects of the utility model are that barrier assembly cooperates with the multiple groups of liquid outlet holes on storage casing, realize the dynamic switching of liquid outlet hole between opening and closing state, the structure design makes that insect-attracting agent liquid can controllably flow out from storage casing, directly replenish in the sponge block in box, to ensure that sponge block always keeps saturated state, to continuously release insect-attracting agent, effectively solved the problem that traditional mothproof device needs to open cover frequently and replenish agent.

The invention discloses a simulation monitoring interface adaptive display method and system for medical teaching, and the system specifically comprises a keyword extraction module which obtains a case and extracts keywords related to the condition of a characterization patient; the case updating module is used for acquiring medical intervention measures and updating medical data in cases; the monitoring interface prediction model comprises an initial monitoring interface prediction module and a real-time monitoring interface prediction module which are used for respectively obtaining an initial monitoring interface prediction result and a real-time monitoring interface prediction result; and the user display module is used for matching the prediction result of the monitoring interface prediction module from a pre-constructed monitoring interface standard library, and enabling the data contained in the case to correspond to the prediction result to be rendered and displayed. Through the pre-trained monitoring interface prediction model, real-time matching of the monitoring interface on each time node after the case initial state and the medical intervention measures is realized, and the scheme is flexible.

The invention relates to the technical field of slab logistics management. The invention discloses a control method for effectively improving the direct charging efficiency of hot blanks of a 1780 production line. The control method comprises the following steps: establishing a double-casting-machine blank supply double-furnace production process, a single-casting-machine blank supply double-furnace production process and a single-casting-machine blank supply single-furnace production process; the molten steel is conveyed to a continuous casting machine to be cast and form a plate blank, then the plate blank is cut into a plurality of blocks, and the cut plate blank is controlled to be conveyed into a hot-rolled plate blank warehouse within one hour; and the using number of the continuous casting machines is determined, if one continuous casting machine is used, the single-casting machine blank supply single-furnace production process is called, and if two continuous casting machines are used, the double-casting machine blank supply double-furnace production process is called. According to the method, calling of a plurality of production processes is combined, the time needed by the slab from cutting off to the charging process is shortened, the temperature drop of the slab in the transportation process is reduced, the charging temperature of the slab is increased, the heating energy consumption cost of the hot rolling procedure is reduced, and the direct charging efficiency of the slab is improved.

This application discloses a file storage method, device, and medium. The method includes: constructing a file system operation interface independent of the file storage tool; adding a first file storage tool for file operations required by current business needs; constructing an interface function response operation between the file system operation interface and the first file storage tool; constructing a storage policy configuration file for forwarding file information to the first file storage tool; and updating the storage policy configuration file when the first file storage tool is updated to a second file storage tool, so as to switch the file system's file storage tool from the first file storage tool to the second file storage tool. This allows for flexible adjustment of the storage scheme according to business needs or performance requirements.

The invention relates to the technical field of broadcast systems, in particular to a control system for multi-channel automatic switching transmission, which comprises a data acquisition unit used for acquiring real-time operation parameters of each main transmission system, signal output indexes of corresponding channels, hardware performance parameters of a public standby machine and historical switching records; the stable monitoring unit is used for dividing the operation cycle of the main transmitting system into a plurality of state monitoring time periods; for the current state monitoring time period, the fluctuation amplitude and the abnormal frequency of the real-time operation parameters of each main transmitting system in the historical state monitoring time period are analyzed, and the operation stability of each main transmitting system in the current state monitoring time period is determined. Through cooperative work of a plurality of units such as data acquisition, stable monitoring and reliable monitoring, real-time monitoring and dynamic switching of a main transmitting system and channels are realized, manual intervention is greatly reduced through the automatic control mode, and the response speed and the operation efficiency of the transmitting system are improved.

The invention discloses a photovoltaic power system, a control method and electric equipment. The photovoltaic power system comprises a photovoltaic assembly, a photovoltaic relay and a photovoltaic converter which are arranged in sequence, a first voltage detection unit is arranged at the output end of the photovoltaic assembly and used for detecting the output voltage of the photovoltaic assembly, and the photovoltaic power system further comprises an energy storage device connected to the photovoltaic relay; the second voltage detection unit is used for detecting the output voltage of the energy storage device; and the controller is used for controlling whether the energy storage device and the photovoltaic relay are kept conducted or not according to the output voltage of the photovoltaic module and the output voltage of the energy storage device. According to the invention, when the output voltage of the photovoltaic module is relatively low, the photovoltaic relay is switched on through power supply of the energy storage device, so that repeated switching-on and switching-off of the photovoltaic relay caused by voltage fluctuation of the input side of the photovoltaic relay are avoided, the service life of the photovoltaic relay is prolonged, and the stability of a photovoltaic power system is improved.

This invention discloses a combined backup DC power supply system, relating to the field of power management technology. The system includes: establishing a bus dynamic characteristic vector; performing time-domain and frequency-domain joint reconstruction of the bus dynamic characteristic vector to extract the corresponding inertia coefficient, impedance change slope, and power phase drift of the bus, and establishing a bus state mapping model; using the bus state mapping model to perform inverse mapping of the bus dynamic response, generating virtual state vectors for each DC power supply unit; constructing a relative deviation matrix between DC power supply units based on the temporal evolution differences of the virtual state vectors to identify abnormal power supply behavior; and using the identification results for dynamic power supply switching management. This invention solves the technical problems of the inability to identify DC bus dynamic response in real time and the lag in power supply unit anomaly detection and switching management in existing technologies, achieving the technical effects of improving system power supply reliability and realizing adaptive backup and dynamic switching between multiple units.

This invention provides a coupled heating system of a PVT heat pump, an air source heat pump, and a boiler, comprising: a first loop consisting of a hot water storage tank and an air source heat pump; a second loop consisting of the hot water storage tank, the PVT heat pump, the boiler, and a heat exchanger, wherein the PVT heat pump and the boiler are connected by a cable; and a third loop consisting of the hot water storage tank, the heat exchanger, and the user. When the PVT heat pump in the second loop is insufficient to absorb energy, the air source heat pump in the first loop supplies heat to the hot water storage tank. The advantages are enhanced system stability and reliability through the complementary operation of multiple heat sources. The coupled system achieves dynamic switching of heat sources through the coordinated work of the PVT heat pump, the air source heat pump, and the boiler. Utilizing the solar power generation and heating characteristics of the PVT heat pump significantly reduces the consumption of fossil fuels, achieving the goal of prioritizing renewable energy utilization. The boiler, as an unrestricted heat source, is only started when necessary, reducing overall operating time and thus reducing carbon emissions, achieving low-carbon operation of the boiler.

The application discloses a column chromatogram image analysis control method based on BF-EdgeNet and relates to the technical fields of computer vision and automation control, and comprises the following steps: acquiring a column chromatogram image and performing pretreatment; performing color band boundary data extraction on the pretreated column chromatogram image based on a preset BF-EdgeNet extraction model; performing structured processing on the extracted color band boundary data to generate boundary feature data, and performing color band segment state judgment according to the boundary feature data; generating corresponding control instructions according to the color band segment state judgment result, and realizing the switching of multiple containers and the collection of chemical components; wherein the extraction model comprises a BN main feature extraction network, an FDA feature fusion module and an ERD boundary decoder which are connected in sequence; and the application can realize high-precision extraction of upper and lower boundary curves of color bands in a column chromatogram image and automatic control of an execution mechanism to complete the switching of multiple receiving containers and the corresponding collection of components.

The invention relates to the technical field of engine parts, and provides a variable-volume piston assembly and an engine, the variable-volume piston assembly comprises a piston cylinder, a piston rod and a variable-volume flexible piston, one end of the flexible piston is open, the other end of the flexible piston is closed, the open end is fixedly connected with the piston cylinder, and the piston cylinder is provided with an air inlet and an air outlet which are communicated with the open end; the piston rod is connected with the closed end of the flexible piston, the valve body is fixedly connected with the piston cylinder, and the air inlet and the air outlet are formed in the valve body; the valve element is arranged in the valve body in a sliding mode and used for closing the air inlet or the air outlet, and a boss is arranged at the closed end of the flexible piston and used for pushing the valve element to move to close the air outlet; one end of the valve rod is connected with the boss, and a clamping head is arranged on the valve rod and used for pushing the valve element to move to close the air inlet. Dynamic switching of air inlet and air outlet is achieved through back-and-forth movement of the valve element, an independent valve does not need to be arranged, it is avoided that external energy is consumed to control opening and closing of the valve, and the energy-saving effect is improved.

The invention provides an electro-optical modulator, which is applied to the technical field of optical fiber communication, and comprises an input optical waveguide used for optical signal injection; the first coupler is used for equally dividing the optical signal into two beams of optical signals with equal power; the phase modulation arm is used for changing the phase of the optical signal; wherein the phase modulation arm is provided with a phase change material, and the phase change material is reversibly converted between a crystalline state and an amorphous state; the traveling wave electrodes are arranged on the two sides of the phase modulation arm and used for changing the refractive index in the phase modulation arm under the action of an electric field; the second coupler is used for combining the interference light output by the phase modulation arm; and the output optical waveguide is used for outputting the interference light after beam combination. According to the electro-optical modulator, the phase-change material is arranged on the branch waveguide, and the phase-change material is reversibly converted between a crystalline state and an amorphous state by applying pulsed light, so that the light intensity passing through the branch is changed, the modulation function is dynamically switchable, and the functionality of a single modulator is effectively improved.

The invention discloses an aerosol blocking system of a residential building drainage system and an intelligent control method. The aerosol blocking system comprises a top-extending vent fan assembly, an absolute pressure sensor, an indoor exhaust fan, a fresh air blower, an edge controller, an intelligent gateway and a central control terminal. In the high-risk state, the central control terminal closes straight-through ventilation and drives a roof-end draught fan to conduct pilot run to induce vertical pipe pressure disturbance, and the effectiveness of the water seal is detected in combination with indoor pressure response; when abnormity is judged or the pressure difference exceeds the threshold, the edge controllers of all the layers adjust air supply in a closed-loop mode, the positive pressure of the vertical pipe in the toilet is maintained, the roof end draught fans are adjusted to operate, airflow is guided to be discharged from the top extending ventilation opening, the pressure gradient of the vertical pipe is stabilized, and intelligent blocking of aerosol is achieved through linkage operation of the draught fans. According to the system and method, the energy-saving requirement during normal operation is considered, and the drainage sanitation safety of the residential building is remarkably improved.

The invention belongs to but is not limited to the technical field of alternating current motors and driving control, and discloses a series winding motor winding phase sequence switching topological system, a modulation method and an inverter, the series winding motor winding phase sequence switching topological system comprises a first bridge arm L1, a second bridge arm L2, a third bridge arm L3, a fourth bridge arm L4 and bipolar diodes TR1, TR2, TR3 and TR4, the four bipolar diodes are turned on or turned off, and the series winding motor winding phase sequence switching topological system is formed. And the phase sequence of the series winding motor can be changed. And then, a corresponding modulation strategy is switched to realize that the three-phase series winding motor uses a torque output topological structure at low speed and heavy load and uses a rotating speed output topological structure at high speed and light load. By means of switching of the topological structure of the series winding motor, the working interval and efficiency of the series winding motor can be optimized so as to adapt to different operation conditions, and the torque-rotating speed operation domain of the three-phase series winding motor is effectively expanded.

The utility model discloses a refrigerator door board storage frame, it includes: refrigerator door board rack, refrigerator door board rack is by bottom plate, pulley, support frame, top frame and load plate composition, and the front side and rear side of refrigerator door board rack are all provided with moving plate, and the both sides wall of moving plate all are seted up with two hidden grooves, and multiple limit baffle are placed in the inner chamber of multiple hidden grooves respectively, and the top and bottom of two moving plate opposite side wall all are fixedly connected with the guide plate, and the side of bottom guide plate is provided with interval adjusting spare, and the top of load plate is provided with the partition subassembly. The utility model two moving plate pass through the linkage of bottom guide plate and interval adjusting spare's two -way screw rod, when rotating knob, two -way screw rod drives both sides connecting block to move to each other or opposite, finally lets moving plate move, realizes the dynamic regulation of refrigerator door board rack front and rear limit baffle, and this design can expand the limit range according to the door board, and the commonality is high.

The present application provides an audio service implementation method, device, electronic device and readable medium, wherein the audio service implementation method includes: when it is necessary to provide audio resources for a terminal device, the pulse audio service determines the target audio device according to the priority of at least one audio device in the resource playback sequence table, wherein the resource playback sequence table includes an audio device identifier and corresponding priority information, and the audio device identifier includes device information and port information; the pulse audio service provides audio resources based on the target audio device. Through the embodiments of the present disclosure, dynamic switching of audio between multiple audio devices is achieved, and the response efficiency and reliability of the pulse audio service are improved.

The present invention discloses a vanadium dioxide P-B phase multifunctional artificial electromagnetic structure for lens antenna, including a metasurface material, an incident surface of the metasurface material is provided with a microstrip antenna patch feed source, one side of the metasurface material is provided with a heating base, another opposite side of the metasurface material is provided with a water-cooling base, and a temperature detection module is also provided on the metasurface material, and the heating base and the temperature detection module are both connected to an MCU stm32 controller. The present invention uses an artificial electromagnetic plane multifunctional phase-regulating artificial electromagnetic lens antenna, and realizes the functions of a dielectric lens antenna and a metal lens antenna based on the material properties of vanadium dioxide phase change at 68°C, and regulates the phase of the spherical wave or cylindrical wave emitted by the lens antenna feed source to be a plane wave of an equal phase plane, realizes the surface phase difference correction of the lens antenna, and completes the wavefront phase dynamic modulation of the lens antenna.

The invention discloses a wavefront on-chip dynamic regulation and control device based on terahertz metasurface transmission waves or surface waves, and belongs to the technical field of electromagnetic wave wavefront regulation and control devices. Due to the fact that a traditional phase gradient metasurface cannot dynamically regulate and control the wavefront of transmission waves or surface waves, the metasurface of the integrated photosensitive material is combined with a space coding light source, and on-chip dynamic regulation and control of the wavefront of terahertz transmission waves or surface waves are achieved. According to the device, a dielectric layer is deposited on a metal reflection bottom plate, and the top layer of the dielectric layer is divided into two regions, namely an excitation region and an intrinsic region. The excitation area is composed of a metal ring array, a plurality of openings are evenly distributed in the metal ring array, light-sensitive materials are deposited at the openings, and 2-bit coding units are formed by controlling the intensity of the light-sensitive materials irradiated by the pump light source. An excitation region is constructed according to a preset coding sequence, when a circularly polarized wave enters the surface of the excitation region, a transmission wave or a surface wave can be generated, the coding sequence is changed to reconstruct the phase of the transmission wave or the surface wave, and the wavefront of the transmission wave or the surface wave is dynamically regulated and controlled, so that the on-chip dynamic regulation and control device for the wavefront of the transmission wave or the surface wave is realized.

The application discloses a large language model inference cost optimization method and device based on reasoning convergence detection, and belongs to the technical field of computers. The method is based on a convergence monitor, continuously monitors the generated reasoning prefix in the inference process of a target problem, and then guides the dynamic cascade of model services according to whether the reasoning prefix reaches an information sufficient state, so that, without modifying the model body and reading the internal information of the model, the generated reasoning segment of a high-cost large inference model in the online inference generation process is observed in real time, the dynamic switching of a low-cost non-inference model is realized, and the inference cost optimization effect in an actual production environment is effectively improved.

The invention discloses a narrow road planning method and device, a storage medium, an automatic driving vehicle, a remote terminal and a computer program product. The method comprises the following steps: determining a working mode of the automatic driving vehicle in the last round; trying to generate a low-precision track and a high-precision track under the condition that the working mode of the last round is narrow path detection; if the low-precision track is not successfully generated, or the low-precision track is successfully generated and has a collision risk, judging a generation result of the high-precision track; if the high-precision track is successfully generated and there is a collision risk, sending a first indication signal to a remote terminal; if a first feedback signal from the remote terminal is received, the working mode is switched from narrow road detection to narrow road passing and serves as the working mode of the current wheel, automatic driving is carried out based on the successfully generated high-precision track, and the first feedback signal is used for indicating that safe passing can be carried out on the high-precision track. According to the scheme, invalid and repeated high-precision trajectory planning can be avoided in a narrow road scene.

The present application relates to the field of wireless communications, and discloses a method, device and equipment for reducing signal shadow fading by using dual antennas. The method includes: setting a polling cycle through a TDMA networking system, wherein at least two special time slots are preset; the ground end sends the same data packet in the special time slot; the sky end receives the data packet through the first antenna and the second antenna respectively, and calculates the signal-to-noise ratio of each antenna; compares the signal-to-noise ratios of the two antennas, and selects the antenna with a larger signal-to-noise ratio as the working antenna in the subsequent time slot; at the end of each polling cycle, repeats the antenna selection process. The device includes two antennas, a T / R component, a single-pole double-throw switch and a baseband circuit, and the baseband circuit is responsible for analyzing the signal-to-noise ratio, controlling antenna switching and executing dynamic antenna selection logic. The present invention can effectively reduce the impact of signal shadow fading, improve the stability of the communication system, adapt to the dynamic channel environment, and optimize the cost, power consumption and reliability of communication equipment.

The utility model relates to a kind of electroplated part cleaning device field, specifically, a kind of electroplated part cleaning device is related to a kind of electroplated part cleaning device. Including shell, shell inner chamber top is fixedly connected with lifting cylinder, the piston rod end of lifting cylinder is fixedly connected lifting plate, and lifting plate bottom is equipped with horizontal drive and longitudinal drive, horizontal drive and longitudinal drive are stacked staggered arrangement, and the both ends of horizontal drive and longitudinal drive are equipped with clamping block, four clamping blocks are annular array arrangement, and the clamping groove of four clamping blocks between formation adapts to the size of electroplated part. The utility model is by controlling the alternate action of first bidirectional hydraulic rod and second bidirectional hydraulic rod, realizes the dynamic switching of electroplated part clamping position, makes the area that originally clamped cover expose in the spray range of cleaning spray head, eliminates cleaning dead angle, adapts to different sizes of electroplated part, and the effect of cleaning is improved.

The present invention discloses a data storage dynamic switching method and device for a network traffic analysis system, and belongs to the field of computer data processing. The data storage dynamic switching device is set up in the database unit of the network traffic analysis system, and the data storage dynamic switching device at least includes: a data interaction unit, a data operation agent unit and a plurality of data storage units. The present invention determines the data structure type of network traffic data through the data interaction unit, and calls the corresponding data operation layer to declare the data structure type and operation content to the data operation agent unit. The data operation agent unit matches a suitable data storage unit according to the data type and operation content; then the driver program and the operation SDK of the matched data storage unit are uniformly processed and converted to complete the actual operation of the data, so that the network traffic analysis system can realize the dynamic switching of multiple databases while completing the processing of massive data.

The invention relates to the field of wireless communication, and discloses a method, device and equipment for reducing signal shadow fading by adopting double antennas, and the method comprises the steps: setting a polling period through a TDMA networking system, and presetting at least two special time slots; the ground end sends the same data packet in the special time slot; the sky end receives the data packets through the first antenna and the second antenna and calculates the signal-to-noise ratio of each antenna; comparing the signal-to-noise ratios of the two antennas, and selecting the antenna with the larger signal-to-noise ratio as a working antenna in a subsequent time slot; at the end of each polling cycle, the antenna selection process is repeated. The device comprises two antennas, a T / R assembly, a single-pole double-throw switch and a baseband circuit, wherein the baseband circuit is responsible for analyzing the signal-to-noise ratio of signals, controlling antenna switching and executing dynamic antenna selection logic. The method can effectively reduce the influence of signal shadow fading, improves the stability of a communication system, adapts to a dynamic channel environment, and optimizes the cost, power consumption and reliability of communication equipment.