53 results about "Electrostatic induction" patented technology

The invention relates to the related technical field of dust detection, and provides a mining induced charge and light scattering fusion dust detection device and method.The dust detection device comprises a workbench, a sampling assembly and a detection assembly, and the sampling assembly comprises a sampling air pump, a conical airflow homogenizer and a closed sampling cavity; the detection assembly comprises an annular sliding rail, a light scattering detection module and an electrostatic induction detection module; the dust detection method comprises the following steps: S1, device initialization and zero calibration; s2, sampling preparation of dust-containing airflow; s3, dual-module synchronous signal acquisition; s4, data processing and temperature and humidity compensation; s5, carrying out anti-interference protection assembly; and S6, data fusion and result output. S7, device cleaning and standby; through cooperative work of the double detection modules, dust detection signals in different concentration intervals are accurately captured, wide-range coverage from low concentration to high concentration is achieved, and synchronous monitoring of dust concentration and particle size characteristics is achieved.

The invention discloses a passive bipolar movable mask electrochemical machining device and method for a workpiece. The device comprises a power supply control system, an electrochemical machining system, a motion control system and an electrolyte circulating system, the electrochemical machining system is provided with a first electrochemical machining tank and a second electrochemical machining tank which are oppositely arranged, two electrodes are arranged in each electrochemical machining tank, and two movable masks are pressed and attached to the two faces of a workpiece to form a mask structure. The motion control system drives the two grooves to be closed or separated; the electrolyte circulating system forms flushing and sucking liquid circulation facing the surface of a workpiece through a flushing pipe and a liquid sucking pipe; the power supply control system intermittently switches the polarities of the two electrodes, so that charge distribution on the two sides of the workpiece is alternately changed, and passive bipolar electrochemical machining is realized; according to the method, photoresist is replaced by the movable mask, the process is simplified, the efficient liquid flushing and absorbing mode and the electrostatic induction machining mode are combined, the inter-electrode mass transfer and electric field uniformity are remarkably improved, and the machining efficiency, precision and depth-diameter ratio are improved.

The application is an array type electrostatic sensor, a projectile velocity measuring device and method based on the sensor. The array type electrostatic sensor is in the shape of a tube coaxially arranged behind the projectile outlet and the barrel or bore body, and a plurality of circumferentially arrayed graphite electrodes in a pleated triangle structure are arranged at the upstream and downstream cross sections along the axis of the tube. The measuring device comprises an induction unit, a signal conditioning unit and an analysis and calculation unit, obtains the electrostatic induction signal component belonging to the projectile, then according to the velocity range of different projectile models, selects the electrostatic induction signals of the electrodes at different positions in different cross sections to reconstruct the charge distribution and establish the cross correlation sensitivity matrix, and further based on the correlation focusing principle of the electrodes at different cross sections, proposes a data fusion algorithm of multiple sensor electrodes, and finally measures the muzzle projectile velocity. The application proposes to use electrostatic field sensing measurement as a new means for projectile testing in view of the complex environment of high temperature and high pressure at the muzzle.

The application belongs to the technical field of low-altitude aircraft detection, and particularly relates to a static electricity radar device for low-altitude aircraft detection and a working method thereof. The device comprises: a metal spherical shell configured to be grounded; an insulating material arranged on the surface of the metal spherical shell; a plurality of static electricity sensing electrodes embedded in the insulating material, the plurality of static electricity sensing electrodes being arrayed on the surface of the metal spherical shell, and the normal directions of the plurality of static electricity sensing electrodes converging at the geometric center of the metal spherical shell; and a signal processing module comprising a gating unit, a conditioning unit and a processing unit. The gating unit is connected to the static electricity sensing electrodes and is used for selecting specified static electricity sensing electrodes to be connected to subsequent circuits in time. The conditioning unit is configured to convert the induced charge signals into voltage signals and amplify and filter the voltage signals. The processing unit receives the digitized static electricity signals, and analyzes the spatial pose information of the low-altitude aircraft according to the signal intensity difference of different static electricity sensing electrodes. The spatial positioning of the low-altitude aircraft is realized by using the static electricity sensor array.

This invention provides a multilayer polarization-enhanced liquid-solid contact separation triboelectric nanogenerator structure, comprising, from bottom to top: a first electrode layer, a polarization-enhancing dielectric layer, a triboelectric layer, a second electrode layer, and a surface nanoparticle modification layer. Both the first and second electrode layers are made of copper foil and are used to collect charges generated by electrostatic induction. The polarization-enhancing dielectric layer is a PVDF thin film, used to enhance the interfacial charge storage capacity and electric field coupling strength, thereby enhancing the electrostatic induction effect and significantly improving the device's output voltage and current. The triboelectric layer is a FEP thin film, which can acquire electrons upon contact with the droplet. The surface nanoparticle modification layer is composed of PTFE nanoparticles, which adhere to the FEP thin film, further increasing the surface triboelectric charge density and thus improving the output voltage. This invention, through liquid-solid contact electrification and electrostatic induction mechanisms, can efficiently convert the mechanical energy of rainwater into electrical energy to provide power for low-power sensors in rainfall detection.

The application belongs to the technical field of instruments and meters, and particularly relates to a transistor proximity sensor based on an interdigital electrode extended gate structure. The proximity sensor is composed of a voltage source, an ammeter, a transistor, interdigital electrodes and the like. The voltage source is used for supplying power to the transistor drain and the far gate end of the interdigital electrodes, and the near gate end of the interdigital electrodes is electrically connected with the transistor gate via a conductive lead. The working mechanism of the proximity sensor of the application relies on the synergistic enhancement effect among the electrostatic induction between the target object and the interdigital electrodes, the regulation effect of the target object on the interdigital electrode capacitance and the modulation effect of the target object on the voltage division of the near gate end of the interdigital electrodes. When the charged target object or the uncharged target object approaches the extended gate end of the interdigital electrodes, the transistor source-drain current can be changed, so that the proximity sensing function is realized.

The application discloses a kind of round crystal processing with destatic device, belong to round crystal destatic technical field, including outer box and for being used to the processing mechanism of round crystal and carrying out destatic treatment, outer box is also provided with two for sending and sending out transfer mechanism and in-out mechanism of round crystal.The application is when round crystal enters the lower side of upper electrode plate, utilize high voltage power supply and electrify lower electrode sheet, form strong electric field, the electric field is excited by electrostatic induction on the back of round crystal and generates opposite polarity charge, generates uniform electrostatic adsorption force, firmly fixed on the surface of insulating sheet, realizes the lossless, clean fixing of round crystal;The application is set up air guide cabin and inner pole needle in the two sides of upper electrode plate, by applying several thousand volts high voltage generates strong electric field, ionize air and generate a large number of free electrons and positive ion, and form directional moving ion wind under the action of electric field, ion wind is directly blown to the surface of round crystal moving to the lower side of electrode plate, can rapidly, uniformly neutralize static charge on round crystal.

The application discloses a kind of electrostatic spraying method of quartz boat surface insulating film, belong to the field of quartz boat, comprising the following steps: S1, by electrostatic induction and make the surface of quartz boat pre-charged;S2, using electrostatic spraying gun on quartz boat electrostatic spraying polymer coating, obtain surface insulating film;Wherein, in surface insulating film, the ratio of the total thickness of groove top surface film layer of quartz boat and the total thickness of groove bottom surface film layer is 1~3.The application improves the spraying difference ratio of the top surface and the bottom surface of the groove of quartz boat.

The invention discloses a pulverized coal fineness on-line monitoring method and device, and aims to solve the problems of serious signal attenuation, weak anti-interference capability, large long-term drift, easy wear of a sampling device and the like under the working conditions of high concentration, high humidity and strong vibration in the prior art. The invention provides an online monitoring scheme integrating bimodal sensing, deep learning and dynamic calibration. According to the system, multi-dimensional physical characteristics of pulverized coal flow are cooperatively collected through a microwave and electrostatic induction dual-mode sensor, and constant-speed passive sampling is achieved in combination with a Venturi tube without a moving part; carrying out self-adaptive preprocessing on the original signal by adopting wavelet packet denoising and temperature and pressure compensation; a double-branch attention CNN network is used for fusing time-frequency domain features, and the pulverized coal fineness is accurately predicted; and extended Kalman filtering is introduced to construct a'detection-calibration 'closed loop, and sensor drift is corrected in real time.

The invention provides a slurry pump cylinder sleeve piston fault detection system and method based on triboelectricity, and relates to the field of drilling equipment detection. The system comprises a cylinder sleeve and a piston, the cylinder sleeve is composed of a steel shell and a ceramic lining installed in an interference mode, and the piston slides in the ceramic lining in a reciprocating mode. An electrode ring is arranged between the ceramic lining and the shell and arranged on the stroke edge of the piston. The signal acquisition module is connected with the electrode ring and acquires an electric signal during relative sliding of the piston; the signal conditioning circuit filters and amplifies the signal; and the transmission unit transmits the processed signal to a central terminal. According to the scheme, real-time dynamic sensing of the piston and the ceramic lining is realized based on an electric signal generated by a triboelectric effect and electrostatic induction coupling of the piston and the ceramic lining. Abnormalities such as eccentric wear and piercing leakage of the piston can be rapidly judged by analyzing signal fluctuation characteristic changes, fault recognition is completed in a second level, and fault enlargement is effectively avoided.

This invention discloses an intelligent child safety lock system based on the trajectory recognition of a triboelectric nanogenerator array (TENG). The system collects user-input spatial trajectory information by deploying a flexible TENG array on the surface of household appliances. The TENG utilizes the coupling effect of triboelectric charging and electrostatic induction to convert triboelectric energy into electrical energy, which is then supplied to subsequent circuits. Simultaneously, the trajectory information is converted into an electrical signal that matches the trajectory. The information processing and acquisition unit modulates this signal and transmits it to the central processing unit for matching with the electrical signal of a preset unlocking trajectory. The central processing unit outputs control commands, which are then executed and fed back by the execution feedback unit. This system effectively resolves the energy efficiency conflict, significantly enhances safety, and possesses excellent environmental adaptability.

The clamp with the human body induction protection function is installed on a mechanical arm and comprises an installation base and an electrostatic induction sensor, one end of the installation base is provided with a first connecting piece used for installing an adsorption type chuck and / or a clamping type chuck in a matched mode, and the other end of the installation base is provided with a second connecting piece used for being connected with the mechanical arm in a matched mode. The second connecting piece is in insulated connection with the mechanical arm; the electrostatic induction sensor is arranged on the mounting seat and is conductively connected with the mounting seat. According to the clamp, the electrostatic induction sensor is conductively connected to the mounting base, the electrostatic charge quantity of the clamp can be monitored in real time, and when a human body gets close to or touches the clamp, the electrostatic induction sensor can sensitively recognize the change of the charge, so that the mechanical arm is controlled to stop working, and harm to the human body is prevented; the mounting seat is in insulated connection with the mechanical arm, so that interference of the mechanical arm on detection of the electrostatic induction sensor can be avoided, the detection accuracy of the electrostatic induction sensor is ensured, and the influence of mistaken shutdown on the production efficiency is prevented.

Provided are a nanoparticle generating device and a desalination device using same, the nanoparticle generating device comprising: a raw material supply unit that provides seawater or wastewater; a gas supply unit that provides a gas; an electrode positioned opposite to the raw material supply unit; a voltage application unit that applies a voltage between a needle portion of the raw material supply unit and the electrode to form an electric field in a space therebetween; and a spray nozzle which has one side connected to the raw material supply unit and the gas supply unit, and which uses the flow of the gas, provided via the gas supply unit, to mix the gas with the seawater or wastewater and spray same outward from the other side. The needle portion of the raw material supply unit is electrically grounded, and the seawater or wastewater charged by the grounding state is provided to the spray nozzle. The seawater or wastewater, charged with electrostatically induced charges, is mixed with the gas to generate an electrostatic explosion and nanoparticulated to produce fine particles, and the produced fine particles are sprayed outward.

The application discloses a closed outer window non-contact dust removal device and method based on indoor electrostatic induction, relates to the technical field of high-rise building outer window maintenance, and is applied to cleaning the outdoor side glass of a closed outer window. All components of the device are arranged on the indoor side of the glass and include a static electricity generation host for generating a high-voltage static electric field, an insulating adhering probe electrically connected with the static electricity generation host and used for adhering to the indoor side surface of the glass and applying the high-voltage static electric field to the glass, and a power supply module and a control unit electrically connected with the static electricity generation host and used for power supply and control of the working state. The insulating adhering probe includes a base body section, an adhering section and a static electricity energy-gathering directional structure. Through the high-voltage low-current electrostatic induction technology and the insulating adhering conduction structure design, the safe, efficient and non-contact dust removal of the outdoor side of the closed outer window is realized.

A sialic electric induction system is provided. The static electric induction system includes a heat generating electric component; a dielectric cooling fluid; a cooling passage structure along the electric component; and a pump arrangement arranged to alternatingly be controlled in a first mode and in a second mode. In the first mode, the pump arrangement pumps the dielectric cooling fluid to be driven through the cooling passage structure in a forward direction to cool the electric component, and in the second mode, the pump arrangement pumps the dielectric cooling fluid to be driven through the cooling passage structure in a reverse direction, opposite to the forward direction, to cool the electric component. A method of controlling a static electric induction system is also provided.

The invention relates to a method for representing dust concentration through a non-stationary fluctuation signal, and belongs to the technical field of dust concentration detection. The method comprises the following steps: S1, collecting a group of dust-induced fluctuation signals by utilizing an electrostatic induction method; s2, overturning the original signal, and obtaining a peak value and a valley value of the original signal by adopting a peak value recognition algorithm, so as to calculate a peak-valley average difference value of the fluctuation signal; and S3, according to the peak-valley average difference value, adopting a segmented multi-curve fitting model to calculate the dust concentration. According to the invention, accurate characterization of the dust concentration by the dust electrostatic induction signal can be realized, and the detection precision and stability of the electrostatic induction method dust concentration detection device are improved.

This invention discloses an online monitoring and anomaly early warning method for particulate matter in industrial processes based on electrostatic induction and deep learning. It relates to the fields of industrial process monitoring and deep learning technology, aiming to solve the problems of poor real-time performance, weak anti-interference ability, and lack of effective early warning mechanisms in traditional methods. The method constructs a multimodal sensing system integrating an electrostatic induction sensor array and temperature and humidity compensation to achieve synchronous acquisition of particulate matter electrostatic signals and environmental parameters. Signal preprocessing is completed through improved wavelet threshold denoising and RBF neural network compensation to extract multi-dimensional features in the time domain, frequency domain, and time-frequency domain. A CNN-Bi-LSTM deep learning model is constructed to achieve real-time concentration monitoring and particle size distribution inversion. An anomaly detection model is established based on the isolated forest algorithm to complete anomaly early warning. This invention significantly improves the robustness and accuracy of monitoring under complex operating conditions, providing core technical support for industrial particulate matter emission control and green production.

The invention provides a self-powered stepping instruction recognition control device and method, and belongs to the technical field of automobile detection, a pedal carrier is provided with a plurality of sensing mechanisms in an array mode, each sensing mechanism is of a main body structure composed of a lower shell and an outer shell, and each sensing mechanism is sequentially provided with an upper cover, a shaft body, a shaft center, a first leaf spring and a spring. The lower shell is provided with a supporting column, the supporting column and the shaft body connecting column are sleeved with the two ends of the spring respectively, and the shaft body is slidably connected with the lower shell. One end of the first leaf spring is fixed to the lower shell, and a PTFE or Nylon film is arranged at the elastic protrusion of the second end of the first leaf spring. And the two films are made of opposite materials and are correspondingly connected with the positive electrode and the negative electrode. The array type sensing mechanism can comprehensively sense input of different positions of the pedal, and the instruction recognition precision is improved. By means of the triboelectrification and electrostatic induction principle, mechanical energy generated by treading of a user is converted into electric energy, and self power supply is achieved. Through thin film material characteristics and structural design, stable generation and transmission of charges are ensured, and power generation efficiency and signal acquisition accuracy are improved.

To provide a static induction electrometer that can control the horizontal position of the iron core. [Solution] A static induction electric device having a winding and an iron core, wherein the winding has an inner winding and an outer winding, and the static induction electric device has a winding support plate that holds both the inner winding and the outer winding.

This invention discloses a live-line de-icing device and method for ultra-high voltage (UHV) ground wires and fiber optic composite overhead ground wires. The device includes a high-voltage busbar, a high-voltage circuit breaker, a converter transformer, two converter valves, a protective ball gap, a protective surge arrester, three fast grounding switches, a control and protection device, two de-icing output high-voltage lines, a de-icing switch, and a de-icing short-circuit switch. When a steady-state overvoltage occurs due to electrostatic induction voltage and electromagnetic induction voltage, the fast grounding switch quickly grounds, and the protective ball gap breaks down and discharges. When a transient overvoltage occurs, the surge arrester activates, protecting the de-icing device. This invention achieves overvoltage protection and insulation coordination of the de-icing device under live-line de-icing conditions, ensuring the safe operation of the de-icing device, and effectively realizing reliable de-icing of UHV ground wires and OPGWs under live-line operation.

The present invention relates to a method for estimating a physical quantity of a static electric induction device assembly (10). The static electric induction device assembly (10) comprises an enclosure (14), a static electric induction device (12) and a fluid (18) whereby the enclosure (14) accommodates the static electric induction device (12) and the fluid (18) such that the static electric induction device (12) is at least partially, optionally fully, submerged into the fluid (18). The method comprising using measured physical property data obtained from a measurement assembly (20). The measured physical property data comprising information indicative of a physical property (Ptrue(x, t)) in each one of a plurality of different locations (x) of the static electric induction device assembly (10) as a function of time (t) for a reference time range (Δtref) when the static electric induction device assembly (10) is in a condition in which at least a portion of the static electric induction device (12) influences the physical property during at least a portion of the reference time range (Δtref).

This invention discloses a gait monitoring device for Parkinson's disease and its operating method. The monitoring device includes a gait detection mat, comprising a first power generation layer, a second power generation layer, and a support layer. The support layer is disposed between the first and second power generation layers to leave a gap between them. The first and second power generation layers have opposite polarities. An electrical signal detection device is electrically connected to the first and second power generation layers via wires. A controller is electrically connected to the electrical signal detection device and is used to analyze the current changes detected by the device. This application, by using a gait detection mat, eliminates the need for adaptation adjustments based on the user's foot shape, making it versatile. Furthermore, the gait detection mat does not require an additional power supply; it generates electrical signals through the electrostatic induction effect between the first and second power generation layers, thereby detecting the user's gait and providing a diagnostic basis for Parkinson's disease.

The application relates to a static electric potential measuring device with a collecting plate, which comprises a static electric collecting plate, a one-way charge valve, a collecting plate, a static electric induction probe and a static electric potential meter, collects a charge signal through the static electric collecting plate, and electrically connects the static electric collecting plate with the collecting plate through the one-way charge valve; the collecting plate is used for accumulating the received charge signal; when the static electric potential is low, the static electric charge from the static electric collecting plate is collected through the collecting plate; the static electric charge of the static electric collecting plate is accumulated due to the effect of the one-way charge valve and the accumulation of the charge signal, until the trigger potential is reached; the static electric induction probe senses the charge signal on the collecting plate; and the static electric potential meter is used for determining the static electric potential of the present measuring point; the static electric potential measuring device with the collecting plate can improve the detection capability of the static electric potential and improve the measurement precision of the static electric potential.

The application relates to the technical field of sensors, in particular to a self-powered non-contact wind speed and direction integrated detection sensor and a preparation method thereof. The sensor adopts a non-contact triboelectric sensing technology based on a single electrode mode, and comprises a wind speed sensing module and a wind direction sensing module. The wind speed sensing module adopts a 1mm non-contact design of a stator and a rotor, and generates an alternating current signal proportional to the wind speed through electrostatic induction; the wind direction sensing module comprises a conical funnel structure and a PCB with 60 uniformly distributed electrodes, and realizes wind direction recognition through contact of conductive probes with specific electrodes. The application solves the problems of high power consumption, large wear and the need for external power supply of traditional wind speed and direction sensors, has wide range, high resolution of 6 degrees of wind direction, and has very high stability and durability in a severe temperature and humidity environment, and can be widely applied to the fields of meteorological monitoring, transportation and self-driven Internet of Things.

The metal dust concentration detection method based on physical constraint neural network belongs to the technical field of dust concentration detection and dust explosion prevention. The method constructs a three-dimensional space sensitivity model described by a physical formula as a constraint condition to establish a neural network for the voltage change generated by a single dust particle moving around a rod-shaped induction electrode. An open space dust scattering platform and a rod-shaped electrostatic induction sensor are used to record voltage signals generated by different concentrations of dust as input data for training to realize dust concentration prediction. Compared with traditional ANN neural networks, sliding filter methods and median filter methods, the proposed method has higher accuracy, overcomes the poor interpretability of traditional neural networks, can extract key features in data faster, meets the needs of dust operation scenes, and has good popularization and application value.

The invention relates to a dust concentration characterization method based on a de-noised non-stationary signal, and belongs to the technical field of dust concentration detection. The method comprises the following steps: S1, collecting a group of dust-induced fluctuation signals by utilizing an electrostatic induction method; s2, filtering the collected fluctuation signals by using an adaptive Pauta criterion algorithm based on an isolated forest algorithm; s3, overturning the filtered signal, and obtaining a peak value and a valley value of the filtered signal by adopting a peak value recognition algorithm, so as to calculate a peak-valley average difference value of the filtered signal; and S4, according to the peak-valley average difference value, adopting a segmented multi-curve fitting model to calculate the dust concentration. According to the invention, the dust induction signal can be effectively denoised, then the dust concentration is accurately represented, and the detection precision and stability of the electrostatic induction method dust concentration detection device are improved.

The present application relates to the technical field of state monitoring and maintenance of generator carbon brush slip ring system, and particularly relates to a generator slip ring chamber carbon powder online monitoring and cleaning integrated system and method. The present application installs a Venturi tube negative pressure cleaning module at a position corresponding to each carbon brush-slip ring contact area, generates local negative pressure by using compressed air, can direct the carbon powder generated at the source point to each carbon brush-slip ring contact area, and discharge after collection; at the same time, the carbon powder discharged by the Venturi tube negative pressure cleaning module is monitored by an electrostatic induction monitoring module and a carbon powder signal is obtained, realizing non-contact online monitoring of the carbon powder, providing reliable data support for subsequent calculation of carbon powder speed and concentration, and facilitating operation and maintenance personnel to master the carbon powder change related to carbon brush wear in real time and discover wear abnormalities in time.