63 results about "Radio-frequency induction" patented technology

The utility model provides an isolation structure and a chemical vapor deposition device, the isolation structure is arranged in a reaction cavity of the vapor deposition device, a heating device is arranged in the reaction cavity, the reaction cavity comprises a first annular cover, a second annular cover and a third annular cover, the first annular cover comprises a first space used for accommodating the heating device, and the second annular cover comprises a second space used for accommodating the heating device; the second annular cover is arranged on the first annular cover in a sleeving manner; the ring width of the second annular cover is larger than that of the first annular cover, so that a cavity is formed between the first annular cover and the second annular cover. The isolation structure blocks a flowing path of reaction gas in the reaction cavity, and corrosion of the reaction gas to the radio frequency induction coil and the bottom wall of the reaction cavity is reduced; and meanwhile, the radiation heat dissipation of the wafer tray on the radio frequency induction coil is isolated, so that the temperature influence of thermal radiation on the radio frequency induction coil is weakened, and the uniformity of thin film deposition is improved.

The invention discloses a radio frequency inductive coupling plasma uniformity regulation and control device, and relates to the technical field of radio frequency plasmas, and the device comprises a discharge chamber, a quartz dielectric window, a radio frequency coil pair and a double-cavity shielding cover. The quartz dielectric window is arranged on the upper surface of the discharge chamber; the radio frequency coil pair is arranged on the upper surface of the quartz dielectric window; the double-cavity shielding cover is arranged on the upper surface of the quartz dielectric window, and two cavities are formed by the double-cavity shielding cover and the upper surface of the quartz dielectric window; the radio frequency coil pair is arranged on the upper surface of the quartz dielectric window, and two radio frequency coils in the radio frequency coil pair are respectively arranged in different cavities; according to the invention, the double-cavity shielding cover is arranged to shield the two radio frequency coils in the radio frequency coil pair, and the position relation of the two radio frequency coils in the radio frequency coil pair is adjusted at the same time, so that the uniformity of the radio frequency inductive coupling plasma can be regulated and controlled.

The utility model discloses an intelligent card test system. The system comprises a main control processor, a first radio frequency induction module, a second radio frequency induction module, a time accumulator, a counter and a power supply module, the first radio frequency induction module is used for uninterruptedly reading a test card, acquiring a first light emitting state of an LED lamp of the test card, and outputting a first electric signal to the time accumulator according to the first light emitting state; the time accumulator is used for accumulatively receiving the first electric signal so as to determine the accumulative test time length of the test card; the second radio frequency induction module is used for periodically reading the test card according to a preset time interval, acquiring a second light-emitting state of the LED lamp of the test card, and outputting a second electric signal to the counter according to the second light-emitting state; and the counter is used for accumulating the received second electric signal so as to determine the accumulated test times of the test card, thereby realizing the durability test of the product added with the LED optical signal feedback in the intelligent card.

The utility model discloses a multifunctional pipe head remote control device for a water feeding unit and a sewage discharging unit of a train, and relates to the technical field of radio frequency identification. The device comprises an RF (Radio Frequency) card, an RF card pipe head container, a remote controller and a remote control receiver, a shell of the RF card is formed by laminating PVC (Polyvinyl Chloride) materials, and the RF card stores information of a unique equipment code corresponding to a water feeding unit or a sewage discharging unit and operation code information of an operation function. The RF card is arranged on the pipe head of the water feeding unit or the sewage discharging unit, near-field radio frequency induction is carried out on the RF card through the remote controller to achieve water feeding and pipe collecting function operation, one station track is provided with dozens of pipe heads of dozens of water feeding units or sewage suction units, one-to-many induction type operation can be achieved by arranging one or more remote controllers, and the operation efficiency is greatly improved. As long as several RF cards are installed on the pipe head, although one RF card can only achieve remote control operation of one function, remote control operation of multiple functions can be achieved by using multiple RF cards storing different function operation codes.

The invention relates to the field of intelligent card punching and scoring, and discloses a high-altitude exploration card punching and scoring system based on NFC radio frequency and somatosensory interaction, and the system comprises a path and node configuration module which is used for setting NFC card punching nodes in a high-altitude exploration path and setting path parameters; the user identification and clock-in trigger module identifies the bracelet through NFC, records clock-in time and triggers a clock-in signal; the somatosensory action recognition module collects somatosensory data at the clock-in node and calculates an action score according to the path parameters; the clock-in event generation and authentication module generates a unique clock-in token; the integral calculation and path tracking module calculates single node scores and summarizes total scores; and the communication and data uploading module uploads the total score and the clock-in token to a server. According to the invention, the card punching nodes and the NFC radio frequency inductor are integrally arranged, and a body feeling triggering time sequence and standard action template comparison mechanism is combined, so that the technical effects that the card punching behavior is credible and verifiable and the action performance is automatically scored are achieved.

The invention discloses a self-repairing radio frequency induction washing label thermal transfer ribbon based on a silver nanowire / polyurethane microcapsule composite structure, the thermal transfer ribbon is composed of a base film, a back coating layer and a thermal transfer printing layer, the back coating layer and the thermal transfer printing layer are respectively coated on two sides of the base film, and the thermal transfer printing layer is a gradient conductive-self-repairing ink layer. The composite material is mainly prepared from silver nanowires (the diameter is 25-30 nm, the length-diameter ratio is 500-800, and the resistivity is 1.5-2.0 * 10 omega.m) coated with polydopamine, polyurethane microcapsules, an epoxy acrylate prepolymer, carbon black and the like according to a specific proportion, wherein the silver nanowires (the diameter is 25-30 nm, the length-diameter ratio is 500-800, and the resistivity is 1.5-2.0 * 10 omega.m). Through the synergistic enhancement effect of the silver nanowires and the polyurethane microcapsules, the problems that a traditional thermal transfer ribbon is prone to being blurred and a conductive network is fractured during printing under repeated bending are solved, after the ink layer is bent for 1000 times, a printed pattern can still rapidly recover the initial integrity, high conductivity and environmental adaptability are achieved, and the thermal transfer ribbon can be widely applied to the field of thermal transfer printing. The method is suitable for flexible electronic identification systems of intelligent textiles and the like, and has good popularization and application values.

The utility model provides a UKey key management device which adopts a non-contact radio frequency technology to carry out intelligent management on access information of keys. Comprising a box body and a control module arranged in the box body, the box body is divided into an operation area and a storage area, the operation area is provided with a display module and an input keyboard which are electrically connected with the control module, and a box door is hinged to one side of the storage area; a plurality of rows of plug-in type storage assemblies, a card storage bag and an electromagnetic door lock which is matched with the box door and electrically connected with the control module are sequentially arranged in the storage area from top to bottom, and an infrared detection module and a non-contact radio frequency induction module which are electrically connected with the control module are further arranged in the storage area. The control module is electrically connected with an authorization module matched with the electromagnetic door lock. The key management system is applicable to the technical field of key management.

The invention discloses a preparation method of high-purity refractory metal spherical powder, which comprises the following steps: preparing high-purity refractory metal of which the initial shape is a block, cleaning and drying the refractory metal, smelting the refractory metal into alloy metal liquid, carrying out vacuum suction casting on the molten metal liquid, pouring a material into cooling water after suction casting is completed, and carrying out ingot casting and cooling, so as to obtain the high-purity refractory metal spherical powder. After the cast ingot is cooled, a metal bar is obtained, and finally the metal bar forms refractory alloy powder; the prepared powder is sprayed out through smelting atomization equipment, refractory alloy powder is put into a radio frequency induction plasma device, technological parameters are adjusted, and spherical powder is obtained; oxidation and impurity introduction of powder in the machining process can be effectively reduced through the radio frequency induction plasma device; when the refractory metal spherical powder is prepared, melting or spheroidizing can be achieved only when the metal powder reaches the specific temperature, the metal material can be rapidly and evenly heated through the high-frequency magnetic field effect of radio frequency induction heating, and temperature fluctuation is reduced.

This invention discloses a preparation process for high-carbon ferrochrome based on plasma spheroidization technology, belonging to the field of powder metallurgy. The process involves crushing and ball milling high-carbon ferrochrome blocks to obtain pre-formed powder, adding tannic acid, urea, nickel acetate tetrahydrate, and citric acid for coating, followed by spray drying. After pre-reduction carbonization in an argon-hydrogen atmosphere, the powder is then spheroidized using a radio frequency inductively coupled plasma torch. In-situ nanostructure growth is achieved in a mixed atmosphere of argon, hydrogen, and acetylene. Nickel acetate is reduced to catalytically active elemental nickel nanoparticles under the action of hydrogen and carbon monoxide. The powder is then cooled, graded, and inertly encapsulated to obtain a high-sphericity, low-oxygen-content, high-carbon ferrochrome-based core-shell structured spherical powder. The process flow of this invention is continuous and controllable, effectively improving powder flowability, bulk density, hardness, and corrosion resistance, and is applicable to additive manufacturing, thermal spraying, and powder metallurgy forming.

The application provides a device and method of fusing radar radio frequency induction and heterogeneous interface coupling technology, through an electromagnetic super surface pattern array antenna with metal characteristics on the inner surface of the heterogeneous interface, a fixed module is bonded around the electromagnetic super surface pattern array antenna, the fixed module and the electromagnetic super surface pattern array antenna jointly form a closed electromagnetic wave resonance cavity region, a high polymer medium material for radiating and conducting electromagnetic waves is built-in, and a radar radio frequency induction control system; electromagnetic waves emitted by a radar microstrip antenna are repeatedly reflected, superimposed and enhanced in the electromagnetic wave resonance cavity region through the high polymer medium material, and then radiated to an external space induction area of the heterogeneous interface through the electromagnetic super surface pattern array antenna, so that activities or micro-motion targets in the induction area range are detected, and a double threshold control logic output control instruction is adopted to improve the induction and control precision of the radar induction system.

The invention provides a preparation method of refractory multi-principal-element alloy powder reinforced by a complex-component ceramic phase, and relates to the technical field of refractory multi-principal-element alloy powder preparation. The method comprises the following steps that refractory metal powder and non-metal powder are added into a solvent and a binder, the mixture is put into a mechanical stirring device to be stirred, and a slurry suspension solution is obtained; micron-sized spherical powder aggregates are prepared through a spray granulation method; a radio frequency induction plasma spheroidizing mode is adopted for preparing refractory multi-principal-element alloy spherical powder reinforced by a complex-component ceramic phase; the preparation method further comprises the step of obtaining the refractory multi-principal-element alloy powder reinforced by the irregular-shaped complex-component ceramic phase in a ball milling mode. The prepared complex-component ceramic phase reinforced refractory multi-principal-element alloy is uniform in component, compact in structure, low in impurity content and controllable in particle size distribution, and the preparation method is simple, easy to operate, environmentally friendly, low in cost, short in process, high in efficiency and beneficial to industrial large-scale production and popularization.

The present invention belongs to the technical field of low-temperature plasma, and particularly relates to a radio-frequency inductively coupled plasma neutralizer. The present invention includes a plasma discharge chamber for accommodating a discharge plasma, a high-voltage insulating gas path device, a radio-frequency coupling antenna, a cathode for collecting ions and shielding radio-frequency capacitive coupling, a shielding housing, and an anode for extracting an electron beam from the plasma discharge chamber. On the one hand, the structure of the radio-frequency inductively coupled plasma neutralizer can effectively shield the capacitive coupling between the radio-frequency coupling antenna and the discharge plasma, reduce the sputtering of the inner wall of the plasma discharge chamber caused by the radio-frequency capacitive coupling effect, reduce the impurity contamination in the discharge plasma, and at the same time can also effectively reduce the contamination on the ceramic insulating parts of the radio-frequency inductively coupled plasma neutralizer, improve the service life and stability of the radio-frequency inductively coupled plasma neutralizer, and has the advantages of simple structure, no electrode contamination, clean extraction of the electron beam, long service life, stable operation, easy control of the beam current intensity and energy, etc.

The application provides a semiconductor cleaning device and a cleaning method, which comprise a rack, a process tube, a fixing support, a radio frequency induction coil and a driving device. The process tube has a cavity inside, and the cavity is used for accommodating a graphite boat to be cleaned. The fixing support is connected with the rack and is movable relative to the rack. The radio frequency induction coil is arranged around the outer periphery of the process tube, and each turn of the radio frequency induction coil is fixed on the fixing support. The radio frequency induction coil is used for forming a plasma of a process gas in the process tube. The driving device is used for driving the fixing support to move in a first direction, so as to drive the radio frequency induction coil to move in the first direction relative to the process tube. The first direction is parallel to the length direction of the process tube. The graphite boat is cleaned by using the semiconductor cleaning device. The radio frequency induction coil surrounds part of the process tube, so that the graphite boat is cleaned in sections, and the cleaning time is short.

The application discloses a radio frequency linear plasma device and application thereof in vanadium-titanium magnetite smelting, and the device comprises an outer shell, a discharge chamber arranged in the outer shell, a neutralizer arranged at the top end of the outer shell, a radio frequency induction coil arranged in the outer shell and a heat exchange coil; the outer shell is provided with an air inlet joint and an air outlet joint; the bottom end of the discharge chamber is communicated with the air inlet joint, the top end of the discharge chamber is provided with a high-temperature-resistant pipe clamped with the air outlet joint, the neutralizer is communicated with the air outlet joint, the radio frequency induction coil is sleeved outside the discharge chamber, and the outer shell is provided with a radio frequency input joint connected with the radio frequency induction coil; the device has a reasonable structure design, adopts a ring-shaped radio frequency induction coil to replace a traditional induction electrode, can generate high-density plasma under a lower radio frequency voltage, greatly reduces energy consumption during device operation, and promotes efficient smelting of vanadium-titanium magnetite through the formed ring-shaped plasma, thereby obviously improving the content of titanium dioxide in smelted products, and thus has good market competitiveness.

The invention discloses a passive NFC (Near Field Communication) device and a passive ink screen. The device comprises an NFC antenna, an NFC wireless communication module, a high-speed wireless communication module and an energy acquisition module, the NFC wireless communication module comprises a resonance module and an NFC controller; the NFC antenna is used for sensing an NFC radio frequency field, generating radio frequency induction voltage and realizing NFC communication and NFC energy receiving; the resonance module and an input capacitor controlled by NFC resonate at an NFC carrier working frequency; the NFC controller is used for establishing communication with the NFC reader-writer and starting the high-speed wireless communication module and the energy acquisition module after the communication is established; the high-speed wireless communication module is used for establishing wireless communication connection with the NFC reader-writer after being started to perform data exchange; and the energy acquisition module is used for acquiring and storing energy from the NFC antenna and supplying power to the high-speed wireless communication module. The passive NFC device can achieve high-speed wireless communication with an external NFC reader-writer, and the user experience effect is improved.

The present invention relates to a system (10) for detection of Radio Frequency (RF) induced heating of a patient undergoing a Magnetic Resonance Imaging (MRI) examination. The system comprises a form (20); and a processing unit (30). The form is configured to be placed around at least a part of a patient undergoing a Magnetic Resonance Imaging “MRI” examination in an MRI scanner. The form comprises a material (40), and the form is configured such that the material is in thermal contact with the patient when the form is placed around the at least part of the patient undergoing the MRI examination. The processing unit is configured to receive interrogation data of the material. The processing unit is configured to determine that RF induced heating of the patient has occurred. The determination comprises utilization of the interrogation data.

The invention belongs to the technical field of functional food, and particularly relates to plant silicon water capable of improving atherosclerosis and a preparation method of the plant silicon water. The method comprises the following steps: S1, mixing silicon tetrachloride, high-purity oxygen and hydrogen to obtain mixed gas; s2, introducing the mixed gas into a radio frequency induction plasma torch to generate silicon-containing gas; s3, the silicon-containing gas is subjected to temperature programming, purging and deacidification under nitrogen carrier flow, and a silicon gas-phase product is obtained; and S4, performing feedback control. The radio frequency induction plasma torch is adopted for high-temperature pyrolysis, and it is ensured that silicon tetrachloride is completely decomposed to generate high-activity silicon-containing gas. The sodium citrate solution is used for dissolution and synchronous surface modification, and the strong coordination capability of citrate radicals is used for stabilizing silicon hydroxyl, so that the product is endowed with stable electronegativity. And in combination with a feedback regulation mechanism of online component and potential monitoring, accurate control of key quality attributes of a final product is realized, and the product consistency is ensured.

A method (500) for controlling a wireless system (100) comprising a group of nodes (200a, 200b, 200c, 200d) to perform radio frequency, RF, based motion detection; the method (500) comprising each node out of the group of nodes (200a, 200b, 200c, 200d): sending (S501) sensing messages on a regular basis; detecting (S502) sensing messages from one or more neighboring nodes (200a, 200b, 200c, 200d); monitoring (S503) at least one characteristic of detected sensing messages; the method (500) further comprising: detecting (S504) a motion by a first node (200a) out of the group of nodes (200a, 200b, 200c, 200d) based on a change of the at least one characteristic; sending (S505) a notification message by the first node (200a) upon detection of the motion; initializing (S506) a hold-off timer by each node out of the group of nodes (200a, 200b, 200c, 200d) upon sending or receiving the notification message; suspending (S507) sending sensing messages on a regular basis during the hold-off timer by each node out of the group of nodes (200a, 200b, 200c, 200d); resuming (S508) sending sensing messages on a regular basis by each node out of the group of nodes (200a, 200b, 200c, 200d) after the hold-off timer.

The invention provides a file reading method and device of an RFID intelligent file cabinet and electronic equipment, and relates to the field of data processing. The method comprises the following steps: acquiring a corresponding relation between radio frequency induction equipment and an RFID tag; according to the corresponding relationship, controlling the first radio frequency induction equipment to send a first radio frequency signal to the first file, and controlling the second radio frequency induction equipment to send a second radio frequency signal to the second file, so as to obtain a first radio frequency distance among the target coupling field, the first radio frequency induction equipment and the first file; according to the target coupling field, obtaining a first resonance signal sent by a first RFID tag corresponding to the first file, and obtaining a second resonance signal sent by a second RFID tag corresponding to the second file; and reading the first file and the second file based on the signal characteristics corresponding to the first resonance signal and the second resonance signal. By implementing the technical scheme provided by the invention, the files in the RFID intelligent file cabinet can be read conveniently.

The application provides a preparation method of a two-phase high-entropy ceramic powder and coating. The preparation method first prepares a micro-sized spherical two-phase high-entropy ceramic powder through a spray granulation method; a high-density, high-fluidity, high-bulk-density high-quality standard spherical two-phase high-entropy ceramic powder is prepared by using a radio frequency induction plasma spheroidization method, and the powder has a face-centered cubic crystal structure and a body-centered cubic crystal structure. A two-phase high-entropy ceramic coating is prepared on the surface of a substrate by using a supersonic plasma spraying technology. The coating prepared by the application has excellent phase stability and oxidation resistance and ablation resistance, and can withstand more than 120 seconds of super-high-temperature heat protection in an electric arc plasma ablation process at 1800 DEG C.

The present invention provides a radio frequency radar structure, circuit and control method for enhancing induction sensitivity. An induction radar module is arranged in a reflection resonant cavity space formed by a non-metallic material housing and a metal base. The induction radar module at least includes: a connector with adjustable height, a radar PCBA and a power control PCBA; a radar antenna module is arranged on the upper surface of the radar PCBA, and a variable pattern metasurface flexible conformal passive resonant antenna is arranged at a preset distance from the upper surface of the radar PCBA. By organically combining the variable pattern metasurface flexible conformal passive resonant antenna with the radio frequency induction radar, the induction radar device can obtain a larger induction radius with a smaller radio frequency transmission power, realizing high-sensitivity induction detection of the induction area; and the flexible conformal characteristic enables it to be bonded and combined with a housing of any shape, not only maintaining the beauty of the non-metallic material housing, but also directly facing the external induction detection area, facilitating sensitive induction and identification.

The present application relates to battery processing and manufacturing technology field, provide a kind of transverse magnetic flux radio frequency induction heating battery pole piece blank area wrinkle removal method, megahertz level radio frequency signal is output by radio frequency power supply, after impedance matching, lossless feed into transverse magnetic flux inductor, generate transverse magnetic force line to make eddy current closed in battery pole piece plane. Again with active water-cooling magnetic flux shield plate generates reverse magnetic field shielding magnetic flux, and through built-in water-cooling channel and timely heat dissipation. While by supporting support roller keeps inductor and pole piece gap constant, cooperate temperature sensor closed loop temperature control and heat to softening state, by production line winding mechanism drive plastic extension of softening zone, finally through frozen roll quenching, overall complete battery pole piece complete heat treatment process. The present application also provides a kind of device, the method and device realize ultra-thin battery pole piece effective induction heating and online annealing. Both can efficiently eliminate pole piece processing residual stress, smooth wrinkle defect, and whole process without damaging coating structure, no powder crack problem.

The present invention relates to a method and apparatus for implementing radio frequency (RF) sensing in a distributed way among nodes of a wireless system, wherein every node in a particular node group sends RF sensing probing messages (e.g., in the form of a Zigbee Inter-PAN message) and listens itself to RF sensing probing messages coming from its own neighbor nodes in the same node group. Each node may calculate and keep track of a signal strength that it receives from each of the other nodes and compares this to a running average of the strength of preceding messages. If the difference exceeds a threshold value, the node will send out an RF sensing reporting message to the entire node group to indicate that presence has been detected. A unique node ID may be assigned to the nodes in an automated fashion (without requiring any commissioning effort), which determines the order in which the nodes send out their messages. To avoid that lots of nodes send their RF sensing reporting messages simultaneously, all nodes in a detection area that receive an RF sensing reporting message may start a hold-off timer for temporarily delaying own transmissions.

Techniques are provided for generating secure radio frequency (RF) sensing waveforms to reduce the risk of a man-in-the-middle (MITM) attack for positioning, sensing and communications. An example method for transmitting a secure radio frequency sensing waveform includes transmitting a first set of parameters including timing information or frequency information associated with a radio frequency sensing waveform, transmitting the radio frequency sensing waveform, and transmitting a second set of parameters including scrambling information associated with the radio frequency sensing waveform.

This invention relates to the field of new energy vehicle charging technology, specifically to an inductive authorization-based plug-and-charge home AC charging pile and its control method. The core solution involves constructing multiple security gating mechanisms through radio frequency induction identity verification, multi-coil parking space boundary determination, gun trajectory closed-loop verification, and PE physical presence proof, enabling safe and convenient plug-and-charge functionality for home charging piles. The method covers establishing a safe default state upon power-on, vehicle and parking space parameter calibration in binding mode, standby pre-authorization session management, spatial closed-loop verification during gun insertion, physical proof of grounding link, multi-condition linkage main circuit control, and full-cycle verification of charging. This invention requires no additional network or manual operation, effectively solving safety hazards such as accidental authorization triggering, cross-parking space charging, and grounding failure in home scenarios, and is suitable for home charging needs in private parking spaces.

The invention discloses an industrial operation permission electronic signature method and system based on multiple verification and process management and control, and belongs to the technical field of industrial safety management and information safety. The method comprises the following steps: a server generates a dynamic token containing a session context and an anti-replay random number (Non) in a specific link according to a job permission process; the signer mobile terminal obtains the token through optical scanning, radio frequency induction or sound wave receiving and the like; triggering local biological feature authentication after successful analysis, wherein a feature acquisition interface or logic of the mobile terminal for generating a device fingerprint is in a default limited state; in response to the fact that the biometric authentication is passed and an internal authorization signal is received, the mobile terminal switches a feature collection interface to a non-limited state, calls the interface to collect hardware feature data of the current device to generate a device fingerprint, and integrates the identity information to generate signature data; and after receiving the data, the server verifies the validity of the random number and the consistency of the device fingerprints, and dynamically verifies the authority according to the context information. The invention further comprises a mechanism for automatically switching sound wave transmission based on environment perception. Malicious programs are prevented from collecting fingerprints through sequential control of a bottom layer interface, the problem of industrial limited space communication is solved through sound wave transmission, and replay prevention and unauthorized prevention are achieved in combination with a process context.

The invention discloses a plasma powder spheroidizing device based on fluidized bed powder feeding and a control method.The plasma powder spheroidizing device based on fluidized bed powder feeding comprises a fluidization bin and a radio frequency induction plasma torch, the fluidization bin is externally connected with a powder feeding gas source, and a perforated plate and a powder feeding pipe are arranged in the fluidization bin; the interior of the fluidization bin is divided into an upper space and a lower space by the porous plate; the powder feeding pipe penetrates through the perforated plate and the bottom wall of the fluidization bin; the powder feeding pipe is connected with a powder inlet branch pipe, the caliber of the powder inlet branch pipe is larger than that of the powder feeding pipe, and the top end of the powder feeding pipe is plugged with a filter element. The fluidization bin is connected with a first return pipe, the first return pipe is communicated with the air supply pipeline, and a filter element is plugged in the first return pipe; and the powder feeding pipe is used for feeding powder below the radio frequency induction plasma torch. The problem that powder is prone to agglomeration in a traditional powder conveying method can be solved, the spheroidizing effect is improved, and the requirement for the fluidity of raw material powder is lower; and meanwhile, the pain point that a ceramic tube of a plasma torch in a traditional method is easy to stick powder and crack can be overcome.

The invention relates to an optical fiber connector, an optical fiber adapter and an optical fiber connector assembly, the optical fiber connector comprises a connector main body, the connector main body is provided with a first miniature cavity, and a radio frequency identification light-emitting module or a radio frequency identification photosensitive module is embedded in the first miniature cavity; the radio frequency identification light-emitting module is configured to be driven to be lightened by utilizing radio frequency induction energy, and the radio frequency identification photosensitive module is configured to supply power to the radio frequency identification photosensitive module after receiving an optical signal, so that the radio frequency identification photosensitive module can be identified by external radio frequency induction equipment. According to the method and the device, port-level refined identification can be realized, identification in a photographing mode is not needed, and the technical problems of unstable identification accuracy and relatively low operation and maintenance efficiency in related technologies are solved.

The invention relates to the technical field of electric propulsion, in particular to an integrated radio frequency inductive coupling cathode which comprises a gas circuit connector, gas circuit insulation ceramic, pulse electrode isolation ceramic, a plasma discharge cavity, an ion collecting electrode and a cathode top, and a transition device is arranged between the gas circuit connector and the gas circuit insulation ceramic; a pulse ignition negative electrode is arranged between the gas path insulation ceramic and the pulse electrode isolation ceramic; a pulse ignition positive electrode is arranged between the pulse electrode isolation ceramic and the plasma discharge cavity; the ion collecting electrode is buckled above the plasma discharge cavity in a sleeving manner; and the cathode top is fixed above the ion collecting electrode. The problem that the service life of a discharge electrode arranged in a plasma discharge cavity is short is solved, small-flow and low-radio-frequency power coupling discharge can be achieved, the requirement for complexity of a radio-frequency power supply system is lowered, and the design targets of light weight and integration of the radio-frequency inductive coupling cathode are achieved.

An electronic shelf, an electronic shelf management system and a working method thereof, the electronic shelf comprises: a shelf main body, the shelf main body comprises a plurality of warehouses, an opening of each warehouse is provided with a radio frequency induction device, and the radio frequency induction devices are used for identifying information of materials entering and exiting from the warehouses; the goods shelf main body is fixed on the moving chassis, and the moving chassis can drive the electronic goods shelf to move; and the electronic goods shelf control module is arranged in the goods shelf main body, and the electronic goods shelf control module is used for carrying out information interaction with the radio frequency induction device and carrying out information interaction with an external system. According to the electronic shelf, visual dynamic management of materials is realized, and the accuracy and stability of a production system are improved.