21 results about "Potential measurement" patented technology

The invention discloses an electrified flexible source load characteristic identification and adjustable potential measurement and calculation method, and particularly relates to the technical field of trunk line potential measurement and calculation, and the method comprises the steps: S1, multi-dimensional dynamic data collection and processing, S2, flexible source load spatial-temporal characteristic dynamic clustering, S3, adjustable potential prediction model construction of a spatial-temporal mechanism, and S4, AC trunk line power grid safety bundle potential verification. S5, dynamic potential visualization scheduling interface development; and S6, method validity verification adaptive optimization. By constructing a multi-dimensional and high-frequency dynamic data acquisition and processing system, data of different types and different scales can be effectively fused and utilized by the model, so that the defect that full utilization of the flexible load in power grid dispatching is limited due to single data source and poor quality in the prior art is overcome, and the flexible load dispatching efficiency is improved. The problems of inaccurate evaluation and poor predictability in the prior art are fundamentally solved.

The invention discloses a detection method of a portable blood potassium tester and the portable blood potassium tester. The method comprises the steps that a communication mechanism is controlled to be selectively communicated with a cleaning liquid containing bottle, a peristaltic pump is controlled to conduct suction, and a first potential measurement value of an electrode detection mechanism is obtained; the communication mechanism is controlled to selectively communicate with the standard liquid containing bottle, the peristaltic pump is controlled to perform suction, and a second potential measurement value of the electrode detection mechanism is obtained; the communication mechanism is controlled to selectively communicate with the sampling bottle, the peristaltic pump is controlled to perform suction, and a third potential measurement value of the electrode detection mechanism is obtained; and determining the concentration of the target potassium ions in the liquid sample to be measured according to the three potential measurement values. According to the method, the detection result can be quickly obtained, the method can be suitable for scenes such as community medical centers and home detection, trace finger tip whole blood of the patient can be obtained during detection, operation is convenient, the patient can conduct self-detection or relatives assist detection, and therefore the medical cost of the patient is effectively reduced, and the convenience and compliance of blood potassium monitoring of the patient are improved.

The invention discloses an ADSS optical cable potential measurement method and device based on a CNN-PINN fusion network, and a medium, and the method comprises the steps: S1, collecting a space electric field vector around an optical cable and environment temperature and humidity parameters, and constructing a three-channel tensor; s2, extracting a high-dimensional feature vector; s3, a PINN physical constraint module is embedded into a Poisson equation, field intensity gradient constraint and dielectric compensation; s4, outputting a three-dimensional space potential distribution field and an electric corrosion risk level; according to the method, CNN and PINN are fused and improved, and the bottleneck of the traditional technology is thoroughly broken through: high-gradient distortion is captured through UNet, key area perception is enhanced through CBAM, and the measurement error is reduced compared with that of a traditional contact sensor through PINN physical constraint; environmental interference is decoupled through three channels, humidity drift is suppressed through dielectric compensation, and reconstruction precision stability in a strong interference environment is guaranteed through frequency domain noise reduction; and the output layer generates three-dimensional potential field distribution, calculates an electric corrosion risk level integrating a space gradient and a time-varying characteristic in real time, and supports a corrosion protection decision.

The application discloses a micro-nano energy device functional layer charge visualization and standardized quantification device and method, wherein a sample table is used for placing a micro-nano energy device functional layer; an active electrostatic probe and an electrostatic potentiometer are connected to realize potential measurement of the micro-nano energy device functional layer; a motion path controller is used for controlling a double-shaft servo motor to drive the active electrostatic probe to move along the surface of the micro-nano energy device functional layer; an oscilloscope is used for recording the measured potential distribution data and the reference signal of the motion path control; and an upper computer is used for extracting effective potential distribution data based on the reference signal, converting the effective potential distribution data into a potential distribution matrix, decoupling the internal relationship between the potential and the charge to obtain a transfer matrix, and obtaining the charge distribution and the charge amount of the micro-nano energy device functional layer through the potential distribution matrix and the transfer matrix. The application can realize characterization of the micro-nano energy device functional layer, such as the friction nanogenerator, the piezoelectric nanogenerator and the like, charge distribution characteristics, transport behavior and the like.

The invention discloses an ADSS optical cable potential measurement method and device of an improved ViT network based on physical symbol fusion and a medium, and the method comprises the steps: collecting three-dimensional electric field distribution parameters of an ADSS optical cable, synchronously obtaining environment parameters, and constructing a multi-channel space-time tensor based on an environment-electric field coupling factor; inputting the multi-channel space-time tensor into the improved ViT network to generate a hidden space representation vector; a physical symbol fusion layer is introduced on the basis of the improved ViT network, and an improved ViT network based on physical symbol fusion is constructed; a training process is constrained through a neural differential equation gradient stabilization technology, a three-dimensional dynamic potential distribution field phi (x, y, z, t) is output, and an electric corrosion risk level Risk is calculated in real time based on potential gradient space-time characteristics. According to the invention, multi-modal environmental parameters are fused, physical priori knowledge is embedded, the dynamic risk deduction capability is provided, and high-accuracy and high-precision electric field measurement can be completed in a high-humidity environment.

The embodiment of the invention provides a protection pressing plate potential measuring method and device with an automatic potential data storage function. The method specifically comprises the following steps: selecting a measuring mode and a measuring range of a potentiometer according to the attribute and the size range of a protection pressing plate potential; measuring the potential to ground of each protection pressing plate according to the pressing plate switching operation steps and the time sequence of the operation order, and automatically storing potential data at at least three different moments in a memory card; and obtaining a pressing plate potential operation result according to historical data and the potential data. According to the potentiometer, redundant functions such as current and resistance measurement are eliminated, only an alternating current and direct current voltage measurement function required by potential measurement of a protection pressing plate is reserved, accidents such as misoperation of a relay protection device and false tripping of a power switch caused by gear mistaken selection or improper conversion are avoided from hardware design, the operation risk is greatly reduced, and the operation efficiency is improved. And a safer guarantee is provided for the switching operation of the secondary equipment of the transformer substation.

The present application belongs to the field of deep space exploration and geophysical exploration, and particularly relates to a method and device for detecting lunar low-frequency electromagnetic field, aiming at solving the problem of unstable potential measurement in the lunar surface rare plasma environment. The present application comprises: deploying first, second and third electric field sensor probes in an orthogonal configuration on the lunar surface; applying a controllable bias current to each probe to actively adjust and stabilize the particle exchange process between the probe and the surrounding plasma, so that it works at a stable working point which is not sensitive to environmental disturbance, thereby reliably obtaining the accurate potential at the position of each probe; finally, by calculating the potential difference between the first probe and the second probe, and between the first probe and the third probe, the first and second electric field components which are orthogonal to each other are determined respectively. The present application overcomes the interference of the special lunar surface environment on potential measurement, and realizes stable and reliable detection of the lunar low-frequency electric field.

The invention discloses a natural potential difference measurement integral inversion method, device and equipment and a medium, and relates to the technical field of oilfield development logging, and the method comprises the steps: obtaining a fixed electrode distance potential difference measurement curve of a to-be-logged well changing with the depth of a borehole; integrating the fixed electrode distance potential difference measurement curve to obtain a natural potential measurement curve, and folding each natural potential value in the natural potential measurement curve according to a preset period to obtain a periodic analysis chart; performing data remainder taking, data deletion and correction curve drawing on the periodic analysis chart to obtain a correction curve, and correcting the two-dimensional array storing each natural potential value in the periodic analysis chart by using the correction curve; and generating a continuous natural potential curve based on the corrected two-dimensional array, and taking the continuous natural potential curve as a natural potential difference measurement integral inversion result of the to-be-logged well, thereby realizing natural potential difference measurement integral inversion of the to-be-logged well even if the to-be-logged well does not contain a stable stratum, and improving the accuracy of the natural potential difference measurement integral inversion.

The invention discloses a method for measuring a crack growth rate and a threshold value at an extremely high temperature. Firstly, a test sample and a clamp are manufactured; then a high-temperature furnace is installed, a test sample and a thermocouple are installed, the test sample, a reference sample and a potential measurement system are connected through a high-temperature-resistant wire, and the reference sample is arranged outside the high-temperature furnace; the temperature of the high-temperature furnace is raised to 1000-1200 DEG C, heat preservation is conducted, and meanwhile water cooling is conducted to the cooling connecting rod; the low-cycle fatigue testing machine starts to load and test the crack of the sample through a potential measurement system; a K-drop method is adopted for testing, a potential measurement system monitors crack propagation in real time through a direct-current potential method, the test is ended when the crack propagation rate reaches 1 * 10 <-mm > / cycle, and a fatigue crack propagation threshold value is obtained through data processing. According to the invention, the problems of current conduction stability, load transmission accuracy and crack length measurement accuracy in the environment of 1000-1200 DEG C are solved.

The utility model provides a floating type offshore wind power foundation corrosion potential monitoring device, which belongs to the technical field of offshore wind power, and comprises a buoy, a floating frame fixed at the top end of the buoy, a lifting structure fixed at the top end of one side of the floating frame, and a potential measuring instrument arranged in a waterproof protective shell, one side of the waterproof protection shell is rotationally connected with a sealing door, and the protection structure comprises a rotating seat rotationally connected to the bottom end of the mounting plate, a rotating ring fixed to the outer side of the rotating seat and isolation assemblies arranged at the two ends of the rotating ring. According to the utility model, foreign matters are not easy to contact with the measuring electrode through the steel wire mesh, and seawater is prevented from directly impacting the measuring electrode, so that the isolation protection function of the device is realized, the impact of water flow on the measuring electrode is reduced, the potential measurement is more accurate, and various objects are prevented from being attached to the surface of the measuring electrode; the service life of the measuring electrode is prolonged while the measuring accuracy of the measuring electrode is guaranteed.

The invention provides a Kelvin probe force microscope-based potential measurement method and a related device. A laser output light path of a laser and an original illumination light path of an AFM main body are physically coaxial through a switching interface of a light path coupling assembly; a collimating mirror is additionally arranged at the tail end of an AFM illumination light path to ensure that laser is collimated light and covers a probe-sample contact area, then a photosensitive material sample is fixed to a sample table after being cleaned and dried, then a laser excitation module and a KPFM control unit are started, laser parameters are adjusted in real time, surface potential data are synchronously collected, and the surface potential data are obtained. And generating a time-potential curve or a space potential distribution diagram. Accurate focusing of laser beams, precise in-situ detection of a sample microcell and standardized parameter regulation and control can be realized through optical path physical coaxiality and the collimating mirror, and the problems that a traditional KPFM can only measure the dark-state surface potential of a photosensitive material and no in-situ measurement professional equipment is provided for the photo-generated surface potential under laser irradiation are solved. And meanwhile, the problem of difficulty in externally introducing a light source is solved.

The invention discloses a metering error prediction method and device for an electric energy metering device and a storage medium, relates to the technical field of smart power grids, and mainly aims to improve the prediction efficiency and prediction precision of metering errors of the electric energy metering device. The method comprises the following steps: acquiring a plurality of potential metering error influence factors of a target electric energy metering device; screening an actual metering error influence factor which influences the metering error of the target electric energy metering device from each potential metering error influence factor; and determining real-time factor data of the target electric energy metering device under the actual metering error influence factor, and inputting the real-time factor data into a preset metering error prediction model for error prediction to obtain a real-time metering error of the target electric energy metering device. The method is suitable for prediction scenes of metering errors of the electric energy metering device.

The invention belongs to the technical field of geodetic survey and geophysical exploration, and discloses a real-time gravitational potential measurement method and device combining an unmanned aerial vehicle and Beidou, and the method comprises the steps: 1, carrying out the system calibration; before execution of a flight task is started, the unmanned aerial vehicle is parked at a ground calibration reference point with a known gravity position for static observation; step 2, real-time Beidou data acquisition; the unmanned aerial vehicle flies according to a preset route, and each track point is observed for a certain time; step 3, real-time receiver clock error calculation; establishing an observation equation on the current track point, and calculating the three-dimensional coordinate of the current track point and the clock error of the GNSS receiver; 4, resolving the gravity potential; calculating an absolute gravitational potential value of any point on the flight path of the unmanned aerial vehicle by combining the receiver clock error obtained during flight calibration of the unmanned aerial vehicle in the step 1; and step 5, data output and mapping. High-precision gravity potential measurement is completed on the mobile platform, and the limitation that traditional gravity measurement depends on static observation or ground arrangement is broken through.

The invention discloses a soil carbon sink measuring and calculating method and system, and belongs to the technical field of soil carbon sink measuring and calculating. The soil carbon sink measuring and calculating method comprises the following steps: S1, collecting a soil sample in a pre-defined area, and obtaining basic information of environmental factors and land utilization types; s2, historical soil data are collected, the current situation of soil is measured, and a reference data set is established; s3, on the basis of the reference data set, main control factors of regional organic matter content changes and contribution rates of the main control factors are obtained through statistical analysis; s4, calculating a soil carbon evolution rate by using long-term positioning test data, and simulating carbon sequestration increment potentials under different carbon sequestration measure scenarios; and S5, carrying out spatial expansion and soil carbon sequestration potential measurement and calculation by virtue of a remote sensing technology and a geographic information system analysis method. Through systematic soil sampling, surface layer and profile soil samples are collected, the soil organic carbon content and related environment information are also obtained, and the richness and representativeness of data are improved.

The present application belongs to the field of geodetic survey and geophysical exploration, and discloses a real-time gravity potential measurement method and device combining unmanned aerial vehicle and Beidou, which comprises the following steps: step 1: system calibration; before the start of flight task execution, the unmanned aerial vehicle is parked on a ground calibration reference point with known gravity potential for static observation; step 2: real-time Beidou data acquisition; the unmanned aerial vehicle flies according to a preset route, and each trajectory point is observed for a certain time; step 3: real-time receiver clock error solving; an observation equation based on the current trajectory point is established to solve the three-dimensional coordinates and GNSS receiver clock error of the current trajectory point; step 4: gravity potential solving; the absolute gravity potential value of any point on the flight trajectory of the unmanned aerial vehicle is solved in combination with the receiver clock error obtained during the flight calibration of the unmanned aerial vehicle in step 1; and step 5: data output and mapping. The present application completes high-precision gravity potential measurement on a mobile platform, and breaks through the limitation of traditional gravity measurement relying on static observation or ground layout.

The invention provides a natural ecosystem index measurement method and system based on function and benefit analysis, and relates to the technical field of natural ecosystem index measurement. According to the method, basic units are divided according to function types of forest, grassland, wetland and desert ecological systems, index threshold intervals of ecological, production and life functions are calculated respectively, equivalent discounting is performed through function conversion coefficients, and an index potential measurement result is output. According to the method, multifunctional coordination measurement is realized, and the defects of one-sided index setting and lack of systematicness and resource constraint connection in the existing method are overcome.

The invention discloses a nondestructive rapid detection method for the cathode protection effect of an HM water supply project PCCP pipeline, and belongs to the technical field of buried metal pipeline corrosion protection and nondestructive detection. The method solves the problem that the measurement result is seriously distorted due to the high resistance characteristic of the PCCP concrete protection layer in the traditional potential measurement method. According to the method, a distributed optical fiber current sensing unit is adopted to continuously measure and protect current density distribution in a non-contact mode in the axial direction of a pipeline, and an actually measured current density sequence serves as a dynamic boundary condition to be input into a pre-constructed PCCP multi-layer structure current potential field coupling inversion model; and solving the coupling physical field equation set to directly invert and calculate a real polarization potential distribution map of the surface of the steel cylinder under the concrete layer, and comparing a preset protection potential standard to realize whole-line protection effect evaluation and risk section accurate positioning. According to the method, the full-line cathode protection effectiveness diagnosis and risk assessment can be quickly carried out on the PCCP of the in-service water supply project without cutting off water and excavating.

The invention belongs to the field of deep space exploration and geophysical exploration, particularly relates to a detection method and device for a low-frequency electromagnetic field of the moon, and aims to solve the problem that potential measurement is unstable in a thin plasma environment on the lunar surface. The method comprises the following steps: deploying first, second and third electric field sensor probes in orthogonal configuration on the lunar surface; a controllable bias current is applied to each probe to actively adjust and stabilize the particle exchange process of the probe and the surrounding plasma, so that the probe works at a stable working point insensitive to environmental disturbance, and the accurate potential of the position of each probe can be reliably obtained; and finally, respectively determining a first electric field component and a second electric field component which are mutually orthogonal by calculating potential differences between the first probe and the second probe and between the first probe and the third probe. According to the invention, the interference of a special lunar surface environment on potential measurement is overcome, and stable and reliable detection of a low-frequency electric field of the moon is realized.

The invention is applicable to the technical field of soil water potential measurement, and provides a soil water potential sensor pottery clay sheet, a preparation process and a regulation and control method.The preparation process comprises the steps that main ingredients and auxiliary ingredients are obtained, the main ingredients at least comprise aluminum oxide, kaolin and synthetic carbon powder, and the auxiliary ingredients at least comprise silica sol; mixing and ball-milling the main materials and the auxiliary materials to obtain a mixture; adding silica sol into the mixture, and stirring for a period of time to obtain uniform fluid slurry; drying the fluid slurry at a preset temperature for a period of time, and carrying out compression molding to obtain a solid wet blank; and carrying out high-temperature sintering on the wet blank to obtain the porous pottery clay sheet. The method has the advantages that the water potential sensor obtained on the basis of the process is high in measurement precision and high in measurement speed, the steps and operation difficulty required for measuring the soil water potential can be remarkably reduced, and a new development direction is provided for high-precision measurement of the soil water potential.

The utility model discloses a radiator surface potential measuring device, and relates to the technical field of local potential measurement. Comprising a measuring container which contains a sodium chloride mixed solution added with acetic acid, and a radiator sample piece extends into the sodium chloride mixed solution; a stirring rod of the strong magnetic stirrer is put into the sodium chloride mixed solution, and the sodium chloride mixed solution is in a non-static state through rotation of the stirring rod; the reference electrode is used as a reference electrode and is placed in the receiving bottle filled with the saturated potassium chloride aqueous solution; one side of the salt bridge extends into the sodium chloride mixed solution, and the other side of the salt bridge extends into the saturated potassium chloride aqueous solution; the fixing clamp is used for connecting and fixing the radiator sample piece; and the recording instrument is respectively connected with the reference electrode and the fixing clamp and is used for recording potential change. A potential measurement mode is adopted to replace a corrosion test, so that the test period is greatly shortened, and the working efficiency is improved; and manpower resources and equipment waste are saved.