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19 results about "Capacitance probe" patented technology
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Capacitance sensors (or Dielectric sensors) use capacitance to measure the dielectric permittivity of a surrounding medium. The configuration is like the neutron probe where an access tube made of PVC is installed in the soil; probes can also be modular (comb-like) and connected to a logger. The sensing head consists of an oscillator circuit, the frequency is determined by an annular electrode, fringe-effect capacitor, and the dielectric constant of the soil. Each capacitor sensor consists of two metal rings mounted on the circuit board at some distance from the top of the access tube. These rings are a pair of electrodes, which form the plates of the capacitor with the soil acting as the dielectric in between. The plates are connected to an oscillator, consisting of an inductor and a capacitor. The oscillating electrical field is generated between the two rings and extends into the soil medium through the wall of the access tube. The capacitor and the oscillator form a circuit, and changes in dielectric constant of surrounding media are detected by changes in the operating frequency. The capacitance sensors are designed to oscillate in excess of 100 MHz inside the access tube in free air. The output of the sensor is the frequency response of the soil’s capacitance due to its soil moisture level.
Gas-liquid two-phase flow resistance-capacitance double-probe corrosion monitoring device
PendingCN120253972APipeline systemsMaterial resistanceCapacitanceElectrical resistance and conductance
A gas-liquid two-phase flow resistance-capacitance double-probe corrosion monitoring device mainly comprises a single-wire resistance probe measuring assembly and a single-wire capacitance probe measuring assembly. The monofilament resistance probes are arranged along the axial direction of the pipeline and cling to the inner wall, the monofilament capacitance probes are arranged along the radial direction of the pipeline and vertical to the inner wall, and the monofilament resistance probes and the monofilament capacitance probes are arranged along the pipeline in a staggered manner at intervals in the circumferential direction. Compared with the prior art, the single-wire resistance probe assembly and the single-wire capacitance probe assembly are combined, the corrosion condition and gas-liquid phase section distribution of the pipeline can be measured at the same time, the single-wire resistance probe assembly and the single-wire capacitance probe assembly are suitable for various flow patterns, the precision is high, the response speed is high, and a new technology and a new measurement means are provided for monitoring corrosion occurring parts and researching corrosion rules.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
Water fullness detection method and equipment
The invention provides a water fullness detection method and equipment, and relates to the technical field of cleaning. The method is applied to a sewage tank of the cleaning equipment, the sewage tank comprises a containing cavity, a capacitance probe is arranged in the containing cavity and comprises a fixing part and a detecting part, the projection area of the detecting part on a first plane is larger than that of the fixing part on the first plane, and the first plane is perpendicular to the central axis of the containing cavity. The method comprises the following steps: acquiring a ground capacitance value of a capacitance probe in real time; according to the ground capacitance value, judging whether the accommodating cavity has a water fullness risk or not; if it is determined that the containing cavity is full of water, the dynamic fluctuation quantity of the ground capacitance value within the preset time is calculated according to the ground capacitance value; judging whether the detection part of the capacitance probe is in an immersed state according to the dynamic fluctuation quantity; and if it is determined that the detection part of the capacitance probe is in the immersion state, triggering water fullness alarm and / or executing water fullness control. According to the water fullness detection method, the problem that the accuracy of a detection mode in the related technology is poor can be solved.
Owner:ZHUMI ZHIJING FUTURE (SUZHOU) TECHNOLOGY CO LTD
Battery formation and capacity grading needle bed
The utility model discloses a battery formation capacity grading needle bed which comprises a frame, a tray, a plurality of power supply modules and a connecting plate, and a plurality of columns of guide rails are arranged on the frame; the tray is mounted on the frame and is used for placing a plurality of to-be-tested battery cells which are arranged in parallel; a test probe is arranged on the power supply module, sliding rails are arranged on the two sides of the power supply module, and the sliding rails can slide relative to the guide rails; an adjusting hole is formed in the tail end of each column of guide rails, and an adjusting bolt penetrates through the adjusting hole to be connected so as to abut against the tail end of the power module, so that the position of the test probe relative to the to-be-tested battery cell can be adjusted; the connecting plate is used for fixedly connecting the power module and the frame. According to the technical scheme of the utility model, the position of the test probe on the power supply module relative to the to-be-tested electrical core can be conveniently adjusted only by manually rotating the adjusting bolt and sliding the power supply module, so that the situation that the test probe and the to-be-tested electrical core are staggered in position is prevented, and the installation efficiency and the test precision are improved.
Owner:SHENZHEN RUINENG INNOVATION TECH CO LTD
Transmission line with electrical length markings and method of continuous marking of transmission lines, transmission line assembly
The present invention discloses a transmission line with electrical length markings, its continuous marking method, and a transmission line assembly. On the outer surface of the transmission line, a plurality of electrical length markings with intervals are formed along the length direction of the transmission line itself. The distance between adjacent markings corresponds to the propagation distance of the signal within a preset time unit d. The electrical length τ satisfies τ = (n - 1)·d + ε, where n is a natural number greater than or equal to 2, 0 ≤ ε < d, and the number of markings corresponds to the integer index n. During manufacturing, the continuous wire is placed on a production line with tension control, the displacement is measured by a grating, and the phase is measured by a non-contact capacitive probe in cooperation with a vector network analyzer. The electrical length at each position is calculated, and the marking module is driven at a d interval to continuously mark and shipped in rolls. In this way, the electrical length of the transmission line can be identified, recorded, and circulated. During assembly, it is cut according to the physical length or electrical length. The number of electrical length markings N of each wire segment is equal to each other, and the electrical length markings at both ends are aligned, so as to achieve the consistency of the propagation time between differential pairs and between multiple channels.
Owner:HEIFEI INTERCONNECT HOLDINGS LTD
High-voltage non-contact measurement method and system for online partial discharge monitoring of high-voltage equipment
PendingCN120214512ATesting dielectric strengthElectrical measurement instrument detailsElectrical resistance and conductanceSignal on
The invention relates to the technical field of high-voltage measurement, and discloses a high-voltage non-contact measurement method and system for online partial discharge monitoring of high-voltage equipment, and the method comprises the steps: arranging a fixed capacitance probe near the high-voltage equipment, enabling the capacitance coupling between the capacitance probe and the high-voltage equipment to be stable and not to be interfered by the outside, and enabling the capacitance probe to be connected with the high-voltage equipment; the capacitance probe measures a voltage signal on the high-voltage equipment in real time; performing data processing on the voltage signal measured by the capacitance probe in real time, and calculating and calibrating the voltage ratio of the capacitance probe by combining the impedance of the high-voltage equipment and the capacitance probe; when the voltage of the high-voltage equipment, the voltage measured by the capacitance probe, the time, the angular frequency, the total capacitance, the input total resistance and the standard uncertainty measured by the coupling capacitance all meet preset conditions, the final voltage value of the high-voltage equipment is calculated according to the voltage ratio; and analyzing the final voltage value to realize partial discharge monitoring of the high-voltage equipment. According to the invention, the real-time accurate monitoring of the partial discharge condition of the high-voltage equipment can be realized, the safety is high, the operation is convenient, and the cost is low.
Owner:ELECTRIC POWER RES INST STATE GRID SHANXI ELECTRIC POWER +2
Multi-cyclone dual-chamber on-line moisture rapid detection system
The application discloses a multi-cyclone double-cavity online water content rapid detection system and belongs to the technical field of material water content online detection. The system comprises a bypass sampling and winnowing module and a multi-cyclone parallel collection module. The multi-cyclone parallel collection module and the double-test cavity module are used in cooperation, the multi-cyclone separator cone is collected in parallel and staggered, and double-cavity alternate testing is performed, so that the time waste caused by waiting for discharging in the traditional single-channel method is eliminated, the whole detection process can continuously and uninterruptedly run, near real-time high-frequency water content output is realized on low-cost hardware, the equivalent sampling interval is compressed to sub-second level, fast process control is met, the testing accuracy is ensured, the water content probe is used, the traditional resistance / capacitance probe is adopted, the cost is greatly reduced compared with an infrared / microwave moisture meter, and the water content probe can be quickly replaced.
Owner:SHENYANG YUANDA TECH IND
Cooling for capacitance probe center conductor
A capacitance probe for measuring clearances within a gas turbine engine includes a center conductor having a face that is exposed to a high temperature source of the gas turbine engine, a connection line connected to the center conductor. A probe housing surrounds the center conductor, the connection line and the connection circuitry. The probe housing defines an opening for exposing the face of the center conductor to the high temperature source of the gas turbine engine. The probe housing and the center conductor define at least one cooling channel that passes through the center conductor to provide cooling air from a cool air source to the high temperature source to provide cooling to the face of the center conductor.
Owner:RTX CORP
Steam dryness detection system
The utility model discloses a steam dryness detection system which comprises a pipeline for supplying steam for forming a hollow filter stick, a vortex shedding flowmeter is inversely mounted in the middle of the pipeline, and a capacitor consisting of a capacitance sensor and a capacitance probe is mounted in the vortex shedding flowmeter. According to the scheme, condensed water is left at the bottom of the pipeline to form the water phase, the water phase serves as the negative electrode of the capacitor, the capacitance sensor and the capacitance probe serve as the positive electrode of the capacitor, the capacitance sensor measures the voltage, the liquid level height of the water phase can be calculated, and the steam dryness in the horizontal section in the pipeline can be obtained through the relation between the liquid level height of the water phase and the voltage. The steam dryness in the pipeline is monitored in real time, a basis is provided for follow-up adjustment, and follow-up steam dryness consistency regulation and control are facilitated.
Owner:ZHENGZHOU BOXUN ELECTRICAL TECH
Insulating material surface charge and surface trap integrated in-situ measurement device
PendingCN120761721ATesting dielectric strengthEnvironmental/reliability testsMeasurement deviceData acquisition
The invention relates to the field of insulating materials, in particular to an insulating material surface charge and surface trap integrated in-situ measurement device which comprises a measurement cavity and a data acquisition system. The measuring cavity comprises a cavity shell, and an electrode, a three-axis screw rod sliding table group, a surface charge measuring unit and a surface trap testing unit which are positioned in the cavity shell; the data acquisition system comprises a static capacitance probe, an electrometer, an oscilloscope and a computer, and the measuring cavity is connected with the data acquisition system through the static capacitance probe; through the integrated design of integrating surface charge measurement and surface trap test in one device, continuous measurement of the same sample can be realized, damage caused by frequent movement of the sample is avoided, distributed measurement of surface charge space-time distribution, surface potential attenuation characteristics and surface trap distribution characteristics of an insulating material can be realized, and the measurement accuracy is improved. The experimental error is reduced, and the measurement efficiency and accuracy are improved.
Owner:MAINTENANCE & TEST CENTRE CSG EHV POWER TRANSMISSION CO +1
Pipe all-position submerged arc welding method, device, system and storage medium
The application discloses a pipeline all-position submerged arc welding method, device, system and storage medium, relates to the technical field of automatic welding, and the pipeline all-position submerged arc welding method comprises the following steps: centering and correcting a flux holding device, and aligning a welding gun with a cover plate hole of a flux holding box on the flux holding device; under the condition that the welding gun is aligned with the cover plate hole, adjusting a flux hopper to a target height; under the condition that the flux hopper reaches the target height, controlling an electromagnetic valve in the flux hopper according to a capacitance signal fed back by a capacitance probe in the flux holding box, so that the accumulation amount of the flux is adjusted; under the condition that the accumulation amount of the flux reaches a preset accumulation threshold, starting arc striking of the welding gun and synchronously moving the welding gun and the cover plate of the flux holding box until welding is completed. The application realizes accurate synchronous control of uniform flux supply and a welding path in all positions, and guarantees continuity and stability of the welding process.
Owner:HUBEI UNIV OF ARTS & SCI +1
On-line continuous monitoring device and method for gas-solid two-phase flow state in air chute
ActiveCN111487921BFlow propertiesProgramme control in sequence/logic controllersCapacitanceFixed capacitor
On-line continuous monitoring device and method for gas-solid two-phase flow state in an air chute, comprising a capacitance probe measurement unit arranged at intervals on the air chute, a purging pipeline correspondingly arranged for each group of capacitance probe measurement units, and a PLC automatic control system for overall control of the entire device. An automatic switch valve for the purging pipeline is provided on the purging pipeline; the PLC automatic control system receives signals from the capacitance probe measurement unit and cleans the capacitance probes by controlling the opening and closing of the automatic switch valve for the purging pipeline; the capacitance probe measurement unit includes at least three groups of capacitance probe assemblies connected in parallel, and each group of capacitance probe assemblies includes a fixed capacitor and a capacitance probe connected in series. The present invention can accurately indicate the location where a fault occurs, eliminate the work of manual troubleshooting, and save maintenance time. The PLC automatic control system can regularly open the automatic switch valve on the purging pipeline to purge the capacitance probes so as to maintain the accuracy of detection data.
Owner:北京国电电力有限公司萨拉齐电厂 +1
Multifunctional portable capacitive imaging glass steel storage tank detection system
ActiveCN115991352BMaterial analysis by electric/magnetic meansLarge containersComputer hardwareImage detection
The application provides a multifunctional portable capacitive imaging glass steel storage tank detection system, and belongs to the technical field of nondestructive testing.The technical scheme is as follows: a multifunctional portable capacitive imaging glass steel storage tank detection system, comprising a detection device and a capacitive probe;the detection device comprises a signal generation module, a signal acquisition module, an impedance conversion and preprocessing module and an upper computer;the capacitive probe comprises an excitation plate and a detection plate;the signal generation module generates excitation signals and reference signals;the original detection signals of the detection plate are processed by the impedance conversion and preprocessing module, collected by the signal acquisition module, converted into digital signals and input into the upper computer, and the upper computer calls a double-layer filtering algorithm module to process the input signals to obtain imaging detection signals.The application has the beneficial effects that: the double-layer filtering algorithm is more sensitive and accurate;the capacitive probe and the detection device are separately designed, and are convenient to use.
Owner:CHINA PETROLEUM & CHEMICAL CORP +2
Detection method of automotive trim coating layer and automotive trim coating method
InactiveCN121633199AUsing electrical meansElectrical/magnetic thickness measurementsInterference resistanceData acquisition
The invention relates to the field of manufacturing of automotive upholstery. The invention discloses a detection method of an automotive trim coating layer and an automotive trim coating method, and the method comprises the steps: arranging a capacitance probe with a drive and an induction electrode above a to-be-detected automotive trim coating in parallel in a suspended manner, and keeping the distance stable; the high-frequency voltage source applies an excitation signal to the driving electrode to form an alternating electric field; the induction electrode acquires a coupling signal with coating information, and the coupling signal is pre-amplified; interference with the same-frequency phase modulation reference signal is converted into high-sensitivity voltage; after data acquisition, an algorithm containing environment compensation is used for analyzing and identifying thickness uniformity and flaws. A protective coating film is detected through a non-contact capacitor, the distance is strictly controlled, and the thickness uniformity and flaws are recognized through signal processing and environment compensation. The speed of the array probe is increased, parameters can be adjusted to adapt to interior trim parts made of multiple materials, and the anti-interference design ensures stable detection. The coating film adhesive force is increased through substrate treatment, the quality is guaranteed through sputtering annealing, technological parameters are controllable, the mass production requirement is met, and both quality and efficiency are considered.
Owner:JIAXING LEWEI ELECTRONIC TECH CO LTD
Swirler-type gas-liquid two-phase flow metering device and method
The disclosure discloses a swirler-type gas-liquid two-phase flow metering device, mainly including a swirler, a capacitance probe module, a hot-wire probe module, a hub and a data acquisition computer. A flow measurement method using the gas-liquid two-phase flow metering device includes: adjusting, by the swirler, flow patterns of an incoming gas-liquid two-phase flow into a uniform annular flow, measuring gas and liquid phase distribution by the capacitance probe module, and measuring gas and liquid phase flow velocity distribution by the hot-wire probe, and volumetric flow rates of gas, thereby obtaining liquid phases according to flow areas and average flow velocities of the gas and liquid phases. Compared with the existing multiphase flowmeter, the gas-liquid two-phase flow metering device of the disclosure has the advantages of small size, compact structure, small resistance loss, wide measurement range, high measurement accuracy, etc.
Owner:JIANGSU FORGED PIPE FITTINGS CO LTD
A gas-liquid-solid three-phase circulating fluidized bed cold model experimental device
The utility model discloses a kind of gas-liquid-solid three-phase circulating fluidized bed cold model experimental device, belong to fluidized bed experimental device technical field.The experimental device mainly includes liquid inlet, reaction tube, gas inlet, liquid outlet, gas-liquid separator, gas outlet, particle conduit, stock bin, screw feeder, conveying pipe, liquid-solid separator, conveying liquid outlet, filter, conveying liquid inlet, discharge port and discharge valve.Gas in the experimental device is in the form of bubble and moves upward and contacts with liquid-solid phase countercurrent, improves interfacial contact efficiency, liquid-solid phase moves downward, backmixing is small, and spiral feeder can be used to accurately control particle circulation rate;With pressure sensor, capacitance probe, optical fiber probe, high-speed camera and other test instruments, the stability of device can be used to study operating mechanism, reveal multiphase flow distribution in reactor, provide solid data and theoretical support for structure optimization and industrial application of the type reactor.
Owner:DALIAN INSTITUTE OF CHEMICAL PHYSICS CHINESE ACADEMY OF SCIENCES
Measurement system having a capacitance probe and an optical probe
ActiveUS12455213B2Gas-turbine engine testingUsing electrical meansMechanical engineeringCapacitance transducer
A measurement system is provided that includes a probe assembly. The probe assembly includes a capacitance probe and an optical probe. The capacitance probe includes a capacitance sensor that forms a sensor face of the probe assembly. An aperture projects axially through the capacitance sensor to the sensor face. The optical probe is configured with an optical line of sight through the aperture into a volume adjacent the sensor face.
Owner:RTX CORP
Wafer conduction type detection equipment and marking equipment
PendingCN120334699ASemiconductor/solid-state device testing/measurementSemiconductor/solid-state device manufacturingCapacitanceWafer
The embodiment of the invention discloses wafer conductivity type detection equipment and marking equipment, and the wafer conductivity type detection equipment can comprise a light source module, a voltage detection module and a controller, the light source module can be configured to project a modulated light beam of which the energy is greater than the forbidden bandwidth of a material of the wafer to a detection area of the wafer; the voltage detection module is provided with a capacitance probe, and the capacitance probe is configured in a manner that the end face of the capacitance probe and a detection area of the wafer can form a capacitance structure so as to detect the direction of photovoltage generated by the detection area based on the modulated light beam; the controller can determine the target conduction type of the wafer according to the direction of the photovoltage.
Owner:XIAN ESWIN MATERIAL TECHNOLOGY CO LTD +1
Pipeline all-position submerged arc welding method, device and system and storage medium
The invention discloses a pipeline all-position submerged-arc welding method, device and system and a storage medium, and relates to the technical field of automatic welding, and the pipeline all-position submerged-arc welding method comprises the steps that centering deviation rectification is conducted on a welding flux containing device, and a welding gun is aligned to a cover plate hole of a welding flux containing box on the welding flux containing device; under the condition that the welding gun is aligned with the cover plate hole, a welding flux funnel is adjusted to the target height; under the condition that the welding flux hopper reaches the target height, an electromagnetic valve in the welding flux hopper is controlled according to a capacitance signal fed back by a capacitance probe in the welding flux material containing box so as to adjust the welding flux accumulation amount; and under the condition that the welding flux accumulation amount reaches a preset accumulation amount threshold value, a welding gun is started for arcing, and the welding gun and a cover plate of the welding flux material containing box are synchronously moved till welding is completed. According to the invention, all-position welding flux uniform supply and accurate synchronous control of the welding path are realized, and the continuity and stability of the welding process are ensured.
Owner:HUBEI UNIV OF ARTS & SCI +1
Battery formation and capacity grading needle bed
The invention discloses a battery formation and capacity grading needle bed. The battery formation and capacity grading needle bed comprises a needle bed main body, a battery tray and a heat dissipation assembly, the battery tray is arranged on the needle bed main body and is used for bearing a plurality of batteries; the heat dissipation assemblies are arranged on the needle bed body, the heat dissipation assemblies are installed on the two sides of the battery tray, each heat dissipation assembly comprises a plurality of air supply devices and an installation support, and the air supply devices are installed on the installation supports; a plurality of first heat dissipation holes are formed in the positions, corresponding to the tabs of the battery, of the battery tray in a hollowed-out mode, the installation support is movably installed on the needle bed body, and the installation support drives the air supply devices to be movably attached to the first heat dissipation holes of the battery tray so that air can be blown to the tabs of the battery. According to the technical scheme, the heat dissipation effect of the batteries in the battery formation and capacity grading needle bed can be improved.
Owner:SHENZHEN RUINENG INNOVATION TECH CO LTD