69 results about "Electrostatic coupling" patented technology

The invention provides a dust explosion-proof early warning method and system, and relates to the technical field of safety monitoring and early warning, and the method comprises the steps: collecting and standardizing the multi-source data of a dust movement track, an airflow field and electrostatic potential distribution, calculating a vortex intensity index and a dust gathering trend coefficient, and constructing a multilayer neural network electrostatic coupling effect model, and nonlinear coupling mapping of dust concentration, electrostatic field intensity and vortex intensity is realized. And when the danger increment output by the model and the growth rate of the dust gathering trend coefficient exceed a preset threshold value, triggering dust explosion-proof early warning. Therefore, the risk change under the action of the electrostatic field can be detected, the recognition capability of abnormal working conditions and a coupling mechanism is remarkably improved, and the safety control level is greatly improved through early-stage accurate early warning and intelligent disposal of dust explosion hidden dangers.

The invention discloses an asymmetric coupling rigidity disturbance type MEMS modal localization accelerometer and a detection method. The accelerometer comprises an upper signal conversion layer and a lower glass substrate layer. The upper signal conversion layer comprises a sensitive mass block, a supporting structure and asymmetrical coupled resonator pairs which are symmetrically distributed. According to the asymmetric coupling resonator pair, a first type resonator and a second type resonator form a weak coupling system through electrostatic coupling, the first type resonator is fixed to a glass substrate layer through anchor points, the second type resonator is fixed to a sensitive mass block, and the first type resonator and the second type resonator meet the mass and rigidity asymmetric relation. When being subjected to the acceleration effect, the sensitive mass block generates micro displacement, changes the static coupling rigidity and triggers the modal localization effect, so that the amplitude ratio of the two resonators is changed, and acceleration measurement is realized by detecting the amplitude ratio change. By adopting the asymmetric structure, the sensitivity of the accelerometer is doubled compared with that of a symmetric structure, and meanwhile, the accelerometer has good linearity and anti-interference capability.

The present invention relates to a stylus, a control method, a non-transitory computer readable medium, and an electronic ruler. Allocation of time slots for the stylus is flexibly changed in units of time slots shorter than frames. A stylus (2) of the present invention bidirectionally transmits and receives signals with a sensor controller connected to a sensor using electrostatic coupling, includes a memory (45) that temporarily stores a value of a local ID, and a control section (44) that, each time an uplink signal transmitted by the sensor controller is detected, determines whether the detected uplink signal includes the value of the local ID stored in the memory (45), and, in the case where it is determined that the uplink signal includes the value of the local ID, generates a downlink signal based on an operation state and transmits the downlink signal to the sensor controller.

Quantum device formed from a substrate, the substrate being covered:with at least one semiconductor region forming a quantum dot,a detection structure with Coulomb blockade for detecting a state of charge of the quantum dot, said detection structure with Coulomb blockade including a detection island disposed above and facing the quantum dot and able to be coupled to the quantum dot by electrostatic coupling, said detection structure furthermore including at least one first tunnel junction between said detection island and a first gate block, the first gate block being juxtaposed with said detection island.

The invention discloses a protective layer of a metal negative electrode of an aqueous zinc ion battery and a preparation method and application of the protective layer, and the protective layer of the metal negative electrode of the aqueous zinc ion battery comprises the following raw materials in percentage by weight: 90-95% of an active material and 5-10% of a binder. The surface of the zinc metal negative electrode is covered with a uniform and cheap porous induced zinc ion uniform deposition protection layer, and the protection layer can be coupled with active water molecules through a specific PVP / PANI nitrogen-containing conjugated skeleton, electrostatic coupling Zn < 2 + > and side chain loaded active polar groups (-NH <-> and = N <->), so that the desolvation efficiency is improved, the corrosion of water to zinc is inhibited, and the service life of the zinc metal negative electrode is prolonged. Meanwhile, zinc ions are guided to be uniformly deposited, the activity of the zinc ions is regulated and controlled, the growth of zinc dendrites is inhibited, the electrochemical performance of the battery is effectively improved, and the cycle life of the battery is effectively prolonged.

The invention provides a coupling stiffness disturbance type MEMS modal localization accelerometer, which is characterized in that a core sensing unit adopts a double-tuning-fork resonator parallel arrangement configuration, and an offset weak coupling resonance system is designed and constructed through the difference of equivalent support stiffness parameters. The outer tuning fork resonator is directly connected with the sensitive mass block, the inner tuning fork resonator realizes full-constraint fixation through a base anchor point, and the outer tuning fork resonator and the inner tuning fork resonator form a double-tuning-fork electrostatic weak coupling resonant structure through an electrostatic coupling parallel plate, so that energy transfer between resonant units is realized. The mechanism of the accelerometer is different from that of a traditional rigidity or quality disturbance mode localization sensor, when the accelerometer is subjected to the action of external acceleration, the inertial micro displacement of the accelerometer is converted into coupling rigidity change of the weak coupling resonance system, the resonance unit amplitude ratio of the weak coupling resonance system is detected through an external circuit, and the detection accuracy is improved. Therefore, the detection of coupling rigidity disturbance is realized, and finally the high-sensitivity detection of the measured acceleration is realized.

The present invention discloses a preparation method of cobalt-doped and synergistically MXene-coated sodium vanadate composite powder. Using water as a solvent, sodium iodide anhydrous and vanadyl phosphate monohydrate as the sodium source and vanadium source, and introducing cobalt acetate tetrahydrate, by synergistically controlling parameters such as concentration and ratio, reaction temperature, reaction time, filling ratio, etc., the synthesis of HNaV6O embedded with cobalt ions assembled by nanosheets through a one-step hydrothermal method is achieved. 16 Using CTAB, the etched Ti3C2Tx and HNaV6O 16 ·4H2O are compositely assembled through electrostatic coupling, and finally cobalt-doped and synergistically Ti3C2Tx-coated HNaV6O 16 ·4H2O is prepared; the present invention improves the crystal structure and electronic conductivity of HNaV6O 16 ·4H2O, enhances its capacity and cycle stability, and the present invention also discloses the application of this material in the cathode material of sodium-ion batteries.

The invention discloses an acceleration sensor based on a coupled beam type 1:3 internal resonance phenomenon, comprising: a mass block, a first micro-lever and a second micro-lever arranged on one side of the mass block in a horizontal direction and symmetrically arranged up and down, a first tuning fork beam and a second tuning fork beam arranged on one side of the mass block in a horizontal direction, two ends of the first tuning fork beam being fixed respectively by a first fixed end and a second fixed end; the first fixed end and the second fixed end being arranged on both sides of a detection electrode respectively; two ends of the second tuning fork beam being fixed respectively by a third fixed end, a first micro-lever and a second micro-lever; two ends of the second tuning fork beam being fixed respectively by the third fixed end, the first micro-lever and the second micro-lever; the first tuning fork beam and the second tuning fork beam being coupled by electrostatic coupling, a coupling power supply outputting a coupling voltage being loaded on the second fixed end connected to the first tuning fork beam, the first tuning fork beam detecting amplitude and frequency by a fixed detection electrode; the second tuning fork beam adjusting driving force by a fixed excitation electrode.

The invention relates to a PCB circuit of a three-degree-of-freedom Duffing type MEMS resonator and an event-triggered fuzzy neural network inversion control method, and belongs to the technical field of MEMS resonator control, and the method comprises the steps: constructing an electrostatic coupling three-degree-of-freedom Duffing type MEMS resonator based on a series mode, and building a mathematical model; the method comprises the following steps: designing an analog circuit of a three-degree-of-freedom Duffing type MEMS resonator, and constructing a PCB experiment platform; designing an inversion controller based on a logarithmic obstacle Lyapunov function, an acceleration function, an acceleration exponential integral tracking differentiator and a type-2 fuzzy wavelet neural network; and a switching threshold event triggering mechanism is introduced into the inversion controller.

In a non-contact power supply system, each of a plurality of non-contact power supply devices includes a filter circuit connected to an inverter to convert power supplied from a power source into AC power and including a reactor and capacitors. The non-contact power supply system includes an electrostatic coupler to electrostatically couple one non-contact power supply device to another non-contact power supply device. The electrostatic coupler includes two capacitors electrically connected in parallel, and a different-phase coil between the filter circuit of the one non-contact power supply device and the two capacitors. The different-phase coil includes an inductance component when a short-circuit or a ground fault occurs.

This invention relates to the field of graphite anode material technology, specifically disclosing a surface-coated natural graphite, its preparation method, and its applications. The surface-coated natural graphite comprises a negatively charged natural spherical graphite core, which is coated with a positively charged micelle solution. A negatively charged MOF is grown on the positively charged micelles through electrostatic adsorption and crystal orientation induction. After curing and drying, a hard carbon source is coated on top, and high-temperature calcination is performed to prepare a natural spherical graphite core, an onion-like carbon framework and a nanocrystalline intercalation structure, an electrostatically coupled intermediate layer, and a hard carbon shell. The graphite anode material of this invention achieves optimized ion diffusion channels, optimized conductive networks, and expanded lithium intercalation sites. This structure significantly improves cycle life and specific capacitance, making it suitable for long-life lithium batteries.

To provide a rotating machine which reduces a shaft voltage in a rotating shaft and achieves a long life.SOLUTION: The rotating machine 1 includes a cylindrical fixed element 12 fixed in a housing 14, and a cylindrical rotating element 11 fixed to a rotation axis S1 disposed coaxially with the fixed element 12 inside the fixed element 12. The rotator 11 is provided with an air gap 21 and a magnetic body 20 which forms a rotating magnetic field as the rotator 11 rotates, and the 21a of the opening of the air gap 21 which opens at the end of the rotator 11 in the axial direction X is covered with a dielectric region 25 which promotes electrostatic coupling between the rotator 11 and the stationary part 12.SELECTED DRAWING: Figure 11

The invention provides a metal detector which suppresses electrostatic coupling between a transmitting coil and a receiving coil and is easy to operate. This metal detector (1) determines whether or not a metal is mixed in a subject (W). The metal detector (1) is provided with: a housing (11); a transmission coil (12) and reception coils (13A, 13B) disposed within the housing (11); a holding material (14) that holds the transmission coil (12) and the reception coils (13A, 13B) in the frame body (11); and a shield member (16) disposed between the transmission coil (12) and the reception coils (13A, 13B). The resistivity of the shield member (16) is higher than the resistivity of the housing (11).

The invention discloses an anti-static vehicle-mounted camera and a vehicle, and the anti-static vehicle-mounted camera comprises a camera body which is used for collecting and processing an image; the PCB is fixedly connected with the camera body; and the conductive shell is used for accommodating the camera body and the PCB. In the PCB, the grounding structure is a circuit ground wire or a circuit ground plane; the power connection structure electrically connected with the conductive shell and the grounding structure are arranged at an interval; the coupling capacitor and the electrostatic suppression antenna are connected in series and are electrically connected between the power connection structure and the grounding structure; the electrostatic suppression antenna comprises a first coupling part and a second coupling part, and the first coupling part and the second coupling part can counteract at least part of electrostatic charges through electric field coupling. According to the anti-static vehicle-mounted camera, by combining a specially-arranged electrostatic coupling counteracting structure and an electrostatic step-by-step suppression mechanism, the reliability and the safety of electrostatic protection are effectively improved, the influence of electrostatic discharge on the yield of the anti-static vehicle-mounted camera can be reduced, the service life of a product can be prolonged, and the safety performance of an automobile can be improved.

To provide a rotary capacitor which can stabilize frequency modulation while increasing the life of a component.SOLUTION: A rotary capacitor 22 includes: an external conductor 15 covering a stator electrode 32 and a rotor electrode 33; and a bypass capacitor 23 for electrostatically combining the rotor electrode 33 and an external conductor 15 to each other. An electrode pair of the bypass capacitors 23 (an external conductor side electrode 24 and a rotor side electrode 25) are set to extend along the direction of the axis of rotation of the rotor electrode 33 in the outer periphery side of a metal shaft part 35a. Also, at least one of the electrode pair of the bypass capacitor 23 has a cylindrical shape.SELECTED DRAWING: Figure 4

The application relates to the fields of nanometer friction power generation sensing technology and film material manufacturing, and particularly relates to a high-friction-voltage hydroxyethyl cellulose sensing material and a preparation method thereof. The sensing material comprises a three-layer structure, and from top to bottom, the three-layer structure comprises an upper hydroxyethyl cellulose film, a polyvinylidene fluoride film and a lower hydroxyethyl cellulose film. The HEC film with aramid nanofibers introduced in the outer layer is used as a friction layer and a mechanical support layer, and the middle PVDF film is used as a static electricity reservation phase, so that the organic combination of static electricity coupling and charge storage is realized. The application not only provides a new idea for the development of the friction nanometer power generation technology, but also provides a more efficient and environment-friendly solution for the application in the fields of wearable devices, self-powered sensors and the like.

The present disclosure provides a quantum processing device comprising: one or more functional nanowires, each functional nanowire connected to at least one of a source and a drain; a sensing nanowire spaced from the one or more functional nanowires and connected to at least one of a source and a drain; one or more gate electrodes capacitively coupled with each of the one or more functional nanowires; one or more electrodes capacitively coupled with the sensing nanowire; and a floating coupler positioned between and electrostatically coupling the one or more functional nanowires and the sensing nanowire; and a controller connected to the one or more gates of the sensing nanowire and the one or more gates of the one or more functional nanowires.

This invention relates to a micro-electrostatic coupling negative ion technology purification and disinfection device, comprising a housing, within which a purification mechanism is provided. The purification mechanism includes a charging component, a dust collection component, and a control component. The charging component includes a regulated power supply a and several carbon brushes. A negative ion generator is located on one side of the regulated power supply a. The control component controls the charging component and the dust collection component to turn on and off. The negative ion generator controls the carbon brushes to charge particulate matter while generating negative ions. The dust collection component adsorbs the charged particulate matter. The negative ion generator controls the carbon brushes to discharge, charging particulate matter in the blown-in air, and the charged particulate matter is adsorbed by the micro-electrostatic dust collection mesh to complete the purification. This invention solves the problem that the discharge method in the prior art easily generates and accumulates ozone, which is harmful to the human body.

In the contactless power supply system (110), each of the multiple contactless power supply devices (1A, 1B, 1C, 1D, 1E) is provided with an area for supplying AC power, and multiple power supply lines (12A, 12B) are respectively provided in the corresponding areas. The contactless power supply system (110) is provided with an electrostatic coupling unit (112) for electrostatically coupling one contactless power supply device to other contactless power supply devices.

The present invention relates to a position detection device and a position indicator thereof. Consumption of a battery of an active stylus is suppressed, and transmission time of a signal from the active stylus is suppressed. The position detection device of the present invention is a position detection device (1) in which a tablet (3) and a power supply device built-in stylus (2) bidirectionally perform signal transmission and reception by an electrostatic coupling method, and is configured to transmit an instruction signal US_cmd after transmitting a trigger signal US_trg for starting an instruction information reception section for receiving an instruction signal US_cmd containing information for controlling the stylus (2) to the stylus (2).

The invention provides a three-stage electrostatic coupling magnetic lens system and a transmission electron microscope, and belongs to the technical field of electron microscopes, and the system comprises a magnetic lens assembly, a magnet exciting coil and an electrostatic lens group which are arranged along an electron optical axis; the magnetic lens assembly comprises an upper magnetic lens part and a lower magnetic lens part, the upper magnetic lens part comprises a first upper pole shoe and a first lower pole shoe, and the lower magnetic lens part comprises a second upper pole shoe and a second lower pole shoe; the excitation coil applies excitation current in a first direction to the first upper pole shoe and the first lower pole shoe and applies excitation current in an opposite second direction to the second upper pole shoe and the second lower pole shoe, so that a magnetic field counteracting region is formed at an object plane between the upper magnetic lens part and the lower magnetic lens part; the electrostatic lens group is arranged on the electronic optical axis, the magnetic lens assembly and the electrostatic lens group form a three-stage electrostatic lens assembly, and the three-stage electrostatic lens assembly is used for generating an electrostatic field to focus electrons. According to the invention, high resolution is maintained while the magnetic field intensity of a sample area is reduced.

The invention relates to a soil moisture sensor based on electrostatic sensing. A soil sensor includes a signal generator and a transmitter coupled to the signal generator, the transmitter configured to transmit a signal from the signal generator, the signal having a fixed frequency, the transmitter including a transmit electrode embedded within a first dielectric material. The soil sensor includes a receiver configured to be electrostatically coupled to the transmitter through a channel including soil, the receiver including a charge change (QVAR) electrode embedded within a second dielectric material. The soil sensor includes a charge change (QVAR) sensor coupled to the QVAR electrode, the QVAR sensor configured to detect a change in charge detected at the QVAR electrode in response to a signal from the signal generator, and output a digital signal including the detected charge. And the soil sensor further comprises processing circuitry coupled to the QVAR sensor and configured to determine a moisture level in the channel based on the digital signal.

A reconfigurable material system comprising an aggregate of a plurality of identical modular robotic unit cells. Each unit cell includes a rigid geometric chassis, an onboard processing element configured for distributed coordination with adjacent unit cells, and multiple electrostatic coupling interfaces disposed on exterior surfaces of the chassis. The unit cells are operable in a first configuration in which the electrostatic coupling interfaces are inactive, allowing relative movement and rearrangement of the unit cells within a workspace. In a second configuration, selective activation of the electrostatic coupling interfaces causes adjacent unit cells to adhere and align, forming a mechanically coherent aggregate structure. By coordinating activation and deactivation of the electrostatic coupling interfaces across the plurality of unit cells, the system enables controlled transitions between a reconfigurable state and a load-bearing assembled state.

A quantum device formed from a substrate (5), the substrate being coated with: - at least one semiconductor region (12a, 120a) forming a quantum dot (QD), - a Coulomb block detection structure for detecting a charge state of the quantum dot, said Coulomb block detection structure comprising a detection island (ID) disposed above and opposite the quantum dot (QD) and capable of being coupled to the quantum dot by electrostatic coupling, said detection structure further comprising at least one first tunnel junction (TJ1) between said detection island (ID) and a first gate block (22), the first gate block (22) being juxtaposed to said detection island (ID). Figure for the abbreviation: Figure 1.

The present application belongs to the technical field of oil liquid abrasive particle monitoring and charge signal monitoring, and relates to a lubricating oil abrasive particle monitoring method based on an electrostatic coupling edge electric field sensor. The method relies on a double-channel acquisition path constructed by the electrostatic coupling edge electric field sensor, and cooperates with an interface circuit to realize identification of abrasive particle signals in lubricating oil and suppression of temperature interference. The method comprises the following steps: inputting original charge signals (abrasive particle electrostatic signals and edge electric field signals) output by the electrostatic coupling edge electric field sensor into a low-frequency processing channel and a high-frequency processing channel respectively after IV conversion and isolation processing, so as to realize effective separation of low-frequency abrasive particle signals and high-frequency edge electric field signals; monitoring oil temperature by the edge electric field sensor and generating a temperature compensation parameter; and correcting the amplitude of the abrasive particle signals in combination with a temperature correction model. The present application can maintain the stability and accuracy of the output signals under the condition of strong oil temperature fluctuation and background noise interference, significantly improve the signal-to-noise ratio and reduce the false alarm rate.

The application provides a coupling stiffness disturbance type MEMS modal localization accelerometer, a core sensitive unit adopts a double-tongue resonator parallel arrangement configuration, and a weak coupling resonance system is constructed by means of the difference design of equivalent support stiffness parameters. The outer tongue resonator is directly connected with the sensitive mass block, the inner tongue resonator is fixed by full constraint through the base anchor point, and the two are connected by a parallel plate of electrostatic coupling to form a double-tongue electrostatic weak coupling resonance structure, so that the energy transmission between the resonance units is realized. The application is different from the traditional stiffness or mass disturbance type modal localization sensor in mechanism. When the accelerometer is subjected to the action of external acceleration, the inertial micro displacement is converted into the coupling stiffness change of the weak coupling resonance system, the detection of the resonance unit amplitude ratio of the weak coupling resonance system is realized through the external circuit, the detection of the coupling stiffness disturbance is realized, and finally the high sensitivity detection of the measured acceleration is realized.

The invention relates to the technical field of electrostatic dust collection, in particular to an electrostatic dust collection ash conveying monitoring device and a control system. The at least two ash hoppers are mounted on the upper side of the ash conveying assembly; the material level sensors are mounted on the corresponding ash hoppers and are used for monitoring material level changes in the ash conveying process; the pressure sensor is mounted on the ash conveying assembly and is used for monitoring the conveying pressure on the ash conveying assembly; the flow sensor is installed on the side, away from the pressure sensor, of the ash conveying assembly, and the flow meter is mainly used for monitoring the speed, concentration and flow parameters of coal ash in the ash conveying assembly; the whole process of work of the ash conveying assembly is monitored through common monitoring of the material level sensor and the pressure sensor. Based on the electrostatic coupling capacitance sensing technology, electrostatic and capacitance signals of an ash conveying pipeline are synchronously obtained in a single sensor, ash flow speed, concentration and flow parameters are calculated through a fusion algorithm, and the technical problem of gas-solid two-phase flow multi-parameter separation measurement is solved.

The invention relates to the technical field of smoke dust removers, and particularly discloses a turbulent flow electrostatic coupling coagulation dust remover and a dust removal method, the turbulent flow electrostatic coupling coagulation dust remover comprises a smoke exhaust pipe, and the smoke exhaust pipe is sequentially provided with an atomization nozzle, a spoiler and an electrostatic generator in the flowing direction of smoke airflow. The atomization nozzles, the turbulator and the electrostatic generator are sequentially arranged in the airflow direction, and an ordered and synergistic chain of water mist pre-wetting, turbulent flow forced mixing and electrostatic coalescence adsorption is formed. The atomizing spray head firstly provides condensation nuclei, the collision frequency and the contact time of fine particles and water drops are greatly increased and prolonged through high-strength and controllable turbulence created by the spoiler, and the particles grow and become heavy preliminarily; the subsequent electrostatic field finally captures or further agglomerates escaped, in particular submicron charged / charged particles.

The invention belongs to the technical field of embedded control and electromagnetic compatibility, and particularly relates to an anti-static false-triggering three-color strip lamp switch interface circuit and a switch state detection method, and the circuit comprises an interface power supply and input protection module, a switch state isolation and shaping module, and an RGB indicating lamp driving module. According to the invention, signal purification is realized through two-stage RC low-pass filtering and Schmidt trigger shaping of the switch state isolation and shaping module, the level is stabilized in combination with a pull-up resistor, and false triggering is completely eradicated; through ESD protection of the interface power supply and input protection module and filtering and discharging design of the RGB driving module, electrostatic coupling interference is suppressed, and normal control of the indicating lamp is ensured. Electrical isolation is realized through an optical coupler, a ground loop coupling path is cut off, static electricity is discharged in cooperation with a low-capacitance ESD clamping device, and a system and peripherals are protected; through a combined architecture of isolation, multi-stage anti-interference and hardware shaping, the defects of traditional single filtering and software jitter removal are overcome, and the working stability in a strong interference environment is improved.