176 results about "Ammeter" patented technology

The invention discloses a behavior baseline-based ammeter state monitoring method, system, equipment and medium, and relates to the technical field of equipment behavior anomaly detection, and the method comprises the steps: collecting operation parameter time sequence data of an intelligent ammeter in a preset monitoring region during operation, carrying out the combined processing of the operation parameter time sequence data, extracting the multi-dimensional features of the region, and carrying out the detection of the behavior baseline; based on regional multi-dimensional features in a historical normal state, a regional behavior baseline is established through unsupervised learning, regional multi-dimensional features at a current monitoring moment are acquired, a regional consistency index is generated through matching degree calculation with the regional behavior baseline, and an abnormal ammeter is identified according to an individual deviation degree. And based on the region consistency index and a preset period, triggering update maintenance of the region behavior baseline. According to the method, visual visualization and a model self-evolution mechanism are combined, and the state of the industrial electric meter is changed from passive warning to active, accurate and large-scale predictive intelligent operation and maintenance.

The invention discloses an electric energy meter operation state inspection and evaluation method and system, and relates to the technical field of electric power metering safety, and the method comprises the steps: collecting and preprocessing the electrical working data of an electric energy meter, obtaining the reference current and working current of the electric energy meter, extracting error features, and generating a current error signal; carrying out voiceprint collection on the electric energy meter, and capturing a voiceprint signal of the ammeter; converting the voiceprint signal into a discrete pulse sequence through a coding algorithm, and obtaining a standardized pulse sequence through dimension conversion and optimization compression; performing feature extraction on the standardized pulse sequence by applying a pulse neural network, and obtaining fault probability distribution through synaptic weight calculation and neuron state updating after obtaining pulse sequence features; the feedback control signal and the electric energy meter evaluation report are generated based on the fault probability distribution, and the problem of poor real-time performance of fault mode recognition is solved.

The invention discloses a digital voltage compensation method, which relates to the technical field of power systems, and comprises the following steps: monitoring output voltage signals and load current signals of each point of a power grid in real time, establishing an output voltage digital sequence and a load current digital sequence, and extracting dynamic characteristic variables of current load current representing the change trend of a future time period; judging the working mode of the current running state; based on the voltage digital sequence, comparing with the reference voltage, calculating a real-time-reference voltage feedback compensation amount, taking the dynamic characteristic variable as input, establishing a load-voltage response prediction model, generating a voltage deviation prediction value in a future control period, and obtaining a voltage feed-forward compensation amount; and the current working mode is identified according to the working mode, a dynamic weight coefficient is given to the real-time-reference voltage feedback compensation amount and the voltage feed-forward compensation amount, the final compensation control amount of the voltage of each point of the power grid is calculated, and a driving signal is generated to dynamically adjust the voltage of each point of the power grid in real time and accurately. The power quality of the power grid is improved.

The utility model relates to the field of liquid film thickness measurement, and discloses a device for measuring the thickness of a surface liquid film, which comprises an annular fixer, an annular rotator, an annular guide rail and an annular gear, the rotating motor drives the annular rotator to rotate in the circumferential direction through the annular gear. The electric horizontal guide rail is fixed to the annular rotator and drives the sliding block to move axially, the stepping motor and the probe are arranged on the sliding block, and the stepping motor drives the probe to advance and retreat in the radial direction. The probe, a power supply, an ampere meter and a circuit switch form a detection loop, the rotating motor, the stepping motor and the electric horizontal guide rail are connected with a computer through data lines for control, and circumferential-axial multi-point liquid film thickness measurement is achieved.

The invention provides an assembly line type instrument and meter inspection, storage and distribution integrated operation platform which comprises a platen, a rotating disc is arranged at the top of the platen, a rotating column is fixed to the bottom of the rotating disc, an inserting rod is driven to move through a second electric push rod, a clamp type ampere meter is extruded and pushed from the rear end of a containing frame to move to an outlet in the foremost end of the containing frame, and the clamp type ampere meter is arranged on the platen. A third electric push rod drives a clamping block to clamp the two sides of the clamp-type ammeter, and after a limiting plate and an extrusion plate of the detection assembly make contact with the two sides of the clamp-type ammeter to be detected, a bidirectional telescopic plate synchronously drives a sliding frame to move along a sliding rail, and the clamping block is pushed to move downwards through a first connecting rod. The clamp-type ampere meter is pushed out from the outlet end of the containing frame, the position of a baffle is extruded to be opened, the clamp-type ampere meter is inserted into the containing frame at the bottom, then the extension end of a third electric push rod is retracted, clamping of the clamp-type ampere meter is relieved through a clamping block, the clamp-type ampere meter falls into the containing frame, and the follow-up testing and sending-out process is carried out through rotation of a rotary disc.

The present application relates to the field of current measuring fittings, and specifically discloses a large-current measuring power fitting and a measuring method thereof, which solves the problem of poor flexibility and large error caused by large conductor resistance value of the existing large-current measuring power fitting which is generally fixed in series in a circuit, and proposes the following scheme, which comprises an outer frame, a mounting plate, a sliding frame, an ammeter, a supporting plate, a clamping seat, a clamping piece, a supporting seat, a rotating shaft, a clamping rod, a clamping jaw, a copper bar, a wire connection terminal, a meter connection terminal, a clamping assembly, a sliding frame, a separation assembly, an extension piece, a push seat, an insulating cover, a gear, a double-sided rack, and a cover setting assembly, the cover setting assembly is used to drive the double-sided rack to slide after the two push seats are separated from each other and the sliding frame, so that the upper and lower insulating covers are rotated towards each other, and the copper bar is protected by the insulating cover. The present fitting is flexible, convenient to replace the conductor, accurate to measure different current values, and safe to use.

A finite size abnormal reflection super surface design and surface impedance optimization method based on integral equation, comprising the following steps: step 1: determining the size of the abnormal reflection surface unit of the actual project; step 2: obtaining the number of super surface units in the finite size direction through the finite size / super surface unit size, and forming a super surface array; step 3: dividing each individual super surface unit into impedance pieces of equal length in the finite size direction; step 4: further dividing each small impedance piece into sub-units of equal length in the finite size direction; step 5: simulating electromagnetic waves in the form of plane waves to 0° incidence of the super surface array, generating surface current, and the surface current will excite a scattering field; the scattering field reaches the ideal state in the target direction. The impedance surface proposed in the application can be designed for any large-angle abnormal reflection angle requirement and any target size, greatly improving its practicability in future application scenarios.

The embodiment of the invention discloses a current detection circuit and current detection equipment, the current detection circuit comprises a power supply input interface, a power supply output interface and a detection circuit, and the power supply output interface is connected with a circuit to be detected; the detection circuit comprises a shunt unit, a first connecting end, a second connecting end and a third connecting end, the shunt unit is connected between the first pole of the power input interface and the second connecting end, a first ampere meter is connected between the first connecting end and the second connecting end, and a second ampere meter is connected between the second connecting end and the third connecting end; when the current of the to-be-tested circuit is greater than a preset threshold value, the shunting unit is conducted, and the current drives the second ammeter to generate pointer deflection through the shunting unit; when the current of the to-be-tested circuit is smaller than a preset threshold value, the shunting unit is switched off, and the current drives the first ammeter to generate pointer deflection; wherein the first ampere meter and the second ampere meter are different in measuring range. The test efficiency and reliability can be improved.

1. The name of the design product: ammeter. 2. The use of the design product: for measuring and displaying current. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1.

An electric vehicle supply equipment (EVSE) calibration device includes a primary conductor, one or more calibration coils, and an ammeter having one or more sensors. The ammeter is coupled to the primary conductor. In the EVSE calibration operating mode, the primary conductor conducts an EVSE current, and the ammeter measures a value indicating a first current induced in one or more sensors by the EVSE current conducted by the primary conductor. In the second operating mode, one or more calibration coils conduct a calibration current, and the ammeter measures a value indicating a second current induced in one or more sensors by the calibration current conducted by one or more calibration coils. The sensors may include sensing coils, magnetic flux sensors, and the like.

1. Name of the designed product: wireless ammeter. 2. Use of the designed product: belongs to the field of electric power measurement, used for measuring current. 3. Design points of the designed product: in the overall shape of the product. 4. Picture or photo that best indicates the design points: design 1 perspective view. 5. Design 1 is designated as the basic design.

The invention relates to a locking type steel wire thread insert vibration test clamp device and a vibration test method, which are suitable for vibration examination of a locking type steel wire thread insert in a free state in an aero-engine. The device comprises a clamp base body, a bolt connecting hole, an O-shaped groove and an induction block. The clamp base body is rigidly connected with the electromagnetic vibration table through a bolt, the O-shaped groove is used for installing a steel wire thread insert test piece, the induction block is made of piezoelectric crystal materials, and when the steel wire thread insert vibrates to reach the set amplitude, the induction block is contacted to generate induction current to drive the induction lamp or the ampere meter to display. The test method comprises seven steps of system connection and preparation, parameter setting and starting, vibration amplitude monitoring, amplitude adjustment, assessment state confirmation, vibration assessment execution and test ending. Through a closed-loop control system formed by an external source signal generator and a laser displacement sensor, single-degree-of-freedom fixed-amplitude vibration in a non-resonance state is realized, the amplitude control is accurate, overload is avoided, parallel testing of multiple test pieces is supported, the test efficiency is improved, the method is closer to actual working conditions, and the method has higher engineering application value.

The invention relates to the field of current measurement fittings, particularly discloses a large-current measurement electric power fitting and a measurement method thereof, and solves the problems that an existing large-current measurement electric power fitting is generally fixedly connected in series in a circuit, the flexibility is poor, the resistance value of a conductor is large, and large errors are prone to being generated. The device comprises an outer frame, a mounting plate, a sliding frame, an ampere meter, a supporting plate, a clamping seat, a clamping piece, a supporting seat, a rotating shaft, a clamping rod, a clamping jaw, a copper rod, a wire connection electric terminal, a meter connection electric terminal, a clamping assembly, a sliding frame, a separating assembly, a telescopic piece, a pushing seat, an insulating cover, a gear, a double-sided rack and a covering assembly, and the double-sided rack is driven to slide, so that the upper and lower insulating covers approach each other to rotate, and the copper rod is protected by the insulating covers. The fitting can be used flexibly, the conductors can be replaced conveniently, current values of different sizes can be measured accurately, and the fitting is safe to use.

1. Name of the product in this design: Demonstration Ammeter. 2. Purpose of this design: For measuring current. 3. The key design features of this product are the combination of shape and pattern. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The present application belongs to the technical field of ammeter, and discloses a double-display power ammeter for experiment table, which comprises an experiment table, an integrated power supply box fixedly connected to one side of the lower end of the experiment table, and a strip-shaped clamping seat fixedly connected to the upper end of the experiment table, further comprising: an experimental measurement power component installed on the strip-shaped clamping seat, which comprises an ammeter main body; the structure cooperation of the inner shaft ring, the outer shaft ring, the transparent anti-misconnection surface ring, the wiring opening and the outer pointer hand shaft is set, the outer pointer hand shaft drives the inner shaft ring, the outer shaft ring and the transparent anti-misconnection surface ring to rotate, the wiring opening on the transparent anti-misconnection surface ring is only open when it is aligned with the correct wiring point, and shields the redundant wiring position when it deviates from the correct point, effectively avoiding the damage of the instrument caused by the students' misconnection of the range and the wrong connection of the wiring column, solving the problem that the existing ammeter is easy to be burned due to misoperation, and improving the safety and standardization of the experimental operation.

A portable, open-type clamp-on non-invasive ammeter device (1) is capable of determining the production status of industrial machines by acquiring and analyzing current measurement samples. Data and parameters are analyzed and transmitted via the Internet by an embedded printed circuit board (PCB) and its components (48). Production status refers to the activities the machine is currently engaged in. Users can pre-define a list of production status names and enter their corresponding current threshold limits. The device (1) is responsible for comparing current measurements with these pre-determined threshold limits to determine the latest production status of the monitored machine. Among its many features, the device (1) includes: a reset button (20), a status light (21), a power input port (19), a plastic housing (18), a PCB (48), and an ADC. Optional features include an mountable adhesive or magnetic base (49) and a rechargeable battery.

The invention discloses a parallel plate ion mobility measuring device and method for field observation. The equipment comprises a three-layer parallel flat plate ion current assembly, an electric field measuring instrument, a first direct-current power supply, a second direct-current power supply, an ampere meter and a measurement and control device, the three layers of parallel plate ion current assemblies are used for generating ions and forming a synthetic electric field; the ampere meter is used for being connected with the three-layer parallel flat plate ion current assembly and generating a current reading for indicating the density of the ion current; the electric field measuring instrument is arranged right below the three layers of parallel plate ion current assemblies and is used for generating a field intensity reading for indicating the size of a synthetic electric field; and the measurement and control device is used for executing a self-calibration program and a self-measurement program of the electric field measurement instrument so as to control the output voltage of the first direct-current power supply and the output voltage of the second direct-current power supply, obtain a current reading, obtain a field intensity reading and calculate the ion mobility. The system is high in accuracy, high in stability, convenient to use, good in portability and high in automation degree.

The utility model provides a digital leakage ammeter for a wired lightning arrester, and relates to the technical field of ammeters. The ammeter comprises a die-casting aluminum shell, a current acquisition module, a signal processing module and a communication module. According to the ammeter, the current acquisition module is connected with the grounding end of the lightning arrester through a high-voltage lead, and leakage current is acquired in real time. And an output signal of the current acquisition module is transmitted to the signal processing module through the photoelectric isolation interface for conversion and processing. The processed data is connected with an external monitoring terminal by the communication module through an RS-485 communication interface by utilizing a shielded twisted pair, so that remote monitoring and data transmission are realized. The ammeter solves the technical problem of integration of remote high-precision monitoring of the leakage current of the lightning arrester and anti-interference reliable transmission in an outdoor complex environment, and realizes integration of the remote high-precision monitoring of the leakage current of the lightning arrester and the anti-interference reliable transmission in the outdoor complex environment.

The invention discloses a three-phase electric meter access detection method, device and system and a storage medium, and relates to the technical field of equipment detection.The electric meter is connected to the alternating current side of power conversion equipment, each phase of the electric meter is connected to a current transformer, and based on the split-phase control function of the power conversion equipment, after the power of the power conversion equipment is limited, the three-phase electric meter access detection is completed. According to the three-phase current difference value of the alternating current side of the power conversion equipment before and after power limitation collected by the ammeter, the access position and direction of each phase current transformer of the ammeter are determined, and accurate detection of misconnection of each phase current transformer of the ammeter is realized.

This utility model provides a portable electrical fault diagnosis device, relating to the field of electrical fault diagnosis technology, including: a handheld ammeter; the handheld ammeter is equipped with a display screen, and the display screen also has a knob for adjusting the range. The outer wall of the knob has twelve anti-slip grooves arranged in a circular array. The top surface of the handheld ammeter is marked with twelve range indicators in a circular array, and the twelve range indicators are aligned with the twelve anti-slip grooves. A spring rod is fixed to the top surface of the handheld ammeter, and the extended end of the spring rod is engaged within the anti-slip grooves. Regarding ease of operation and accuracy, the anti-slip groove design on the outer wall of the knob, combined with the engagement of the spring rod with the anti-slip grooves, not only prevents hand slippage when adjusting the range but also achieves range locking, effectively preventing range changes due to accidental touches and ensuring the accuracy of the measurement data.

The utility model discloses a soil disintegration air escape amount and cement dissolution rate real-time monitoring device which comprises a disintegration tank, the disintegration tank is arranged on a base, a water injection pipe with a valve is arranged at the top of the disintegration tank, a water drainage pipe with a valve is arranged at the bottom of the disintegration tank, and a support is arranged above the disintegration tank. The mechanical sensing unit comprises a lifting rope, a lifting hook, a gas collector, a grid plate, a first tension sensor and a second tension sensor, and the electrochemical monitoring unit comprises an anode electrode plate, a galvanometer, a switch, a direct-current power supply and a cathode electrode plate which are sequentially connected in series through wires to form a closed monitoring loop. Quantifying the dissolution rate of the cement by monitoring a current signal corresponding to the ion concentration change in the solution; the high-definition camera collects disintegration images in real time and synchronously transmits the disintegration images and sensor data to the server. According to the device, through the combined action of the mechanical sensing unit and the electrochemical monitoring unit, the limitation of single-parameter monitoring is solved, and key data support is provided for stability evaluation of geotechnical engineering.

The invention discloses equipment for detecting the service life of a conductive rolling ring. The equipment can dynamically simulate working conditions and test wear characteristics at multiple rotating speeds. The device is composed of a servo motor, a coupler, a rotating shaft, a fixed rack, a conductive rolling ring, a conductive rolling ring fixing frame, a fixed beam supporting base and a machine outer cover. The servo motor drives the rotating shaft through the coupler, the rotating shaft is assembled in the fixing shaft, and the rotating shaft is connected with a bearing in the fixing shaft. The fixed end and the rotating end of the conductive rolling ring are respectively connected to a volt-ammeter. Through the real-time work of the conductive rolling ring, the voltage and current change is monitored in real time, and the contact resistance and wear rule is analyzed. Compared with static detection, the device dynamically simulates working conditions, synchronously obtains rotating speed-voltage and current data, evaluates durability and contact stability of the conductive rolling ring, provides support for material selection and life prediction, and is suitable for reliability verification of high-precision rotary conductive parts.

The utility model provides a contact assembly, a load switch and an ammeter, and relates to the technical field of electrical equipment. The contact assembly comprises a shell, a static contact, a first leading-out piece and a moving contact. The static contact is arranged on the shell; the first lead-out piece comprises a first section, a second section and a third section which are connected in sequence; one end of the moving contact is used for being connected with the static contact, the other end of the moving contact is connected with the first section, the first section and the third section are located on the two sides of the moving contact in the thickness direction respectively, and under the condition that the moving contact and the static contact are switched on, the flow direction of current passing through the moving contact is opposite to the flow direction of current passing through the first section and is the same as the flow direction of current passing through the third section. Therefore, the magnetic field generated by the two sections of current generates acting force for moving towards the static contact on the moving contact, the stable contact of the moving contact and the static contact is ensured, and the operation stability of the contact assembly and the endurance capability of resisting short-circuit current are improved.

The application relates to a quality detection method for an external power supply field electric module, belonging to the technical field of air purification, and comprising the following steps: S100, a field electric module, an external power supply and an ammeter are connected in series to form a power-on loop, and a detection element is connected in parallel with the field electric module; S300, current indication of the ammeter is observed, if the current value is not in a preset current range, the detection element is sequentially contacted with all metal needles of the field electric module, voltage indication of the detection element is observed in real time, if the voltage value is not in a preset voltage range, it is indicated that a conductive component in the field electric module is not effectively electrically connected, so that a field electric module appears a circuit breaking fault, the application determines electric connection reliability of the conductive component in the field electric module from the outside of the field electric module by observing current indication and voltage indication, detects the quality of the field electric module, avoids that defective products flow to the market, and ensures that the field electric module does not appear a circuit breaking fault in actual application.

The application relates to the technical field of electric signal measurement, and particularly relates to a clamp ammeter with a multi-channel interference suppression function. The application is related to the correlation of interference signals in each channel, interference signal analysis and extraction through ICA decomposition, the consistent influence characteristics of interference signals in each channel, the self-adaptation of the learning rate of the optimization process in the ICA decomposition algorithm, the acceleration of the decomposition speed and the decomposition accuracy, the guarantee of the extraction speed and accuracy of the interference signals, and the interference suppression of each channel based on the finally extracted interference signals. The application can evaluate the magnetic coupling interference condition through iterative decomposition, more accurately decompose interference components, effectively suppress the interference of each channel, guarantee the current accuracy obtained by each channel, and realize the calibration of the monitored current signals.

The invention relates to the technical field of power transformation protection replacement, in particular to a power line loss abnormity monitoring system and monitoring method. The host and the extension sets are provided with communication modules, and the communication modules provide wireless communication links and pulse signals. A power supply circuit, a current acquisition circuit, a leakage current acquisition circuit, a voltage acquisition circuit, a phase sequence measurement circuit, an MCU core control circuit and a 4G communication circuit are integrated in the host and the extension set. Time service and communication are combined into one, an independent high-precision GPS module is omitted, reference pulses are distributed through 4G after Beidou signals are acquired at the outdoor host, and sub-millisecond synchronization can be achieved without receiving satellite signals by the indoor extensions. The phase sequence judgment precision is high, A, B and C three-phase and single-phase user attribution phases can be reliably distinguished, the extension set can be put into use only by clamping a clamp meter, wiring is not needed, relaying is not needed, and an original metering seal does not need to be damaged.

The utility model discloses a resistance law teaching demonstration teaching aid belongs to teaching aid technical field. The teaching aid includes backplate, is equipped with direct current source, electric bulb, ammeter, voltmeter and various resistances on backplate, and the both ends of each resistance are connected with resistance terminal post. The positive and negative poles of direct current source are connected with the wire with binding jaw, and the wire is connected with electric bulb and ammeter in series, and also can be connected with manual switch in series. Various resistances cover material, thickness, length, short and temperature comparison resistance, and can comprehensively show the influence of different factors on resistance. The voltmeter is used for measuring circuit voltage. Through the teaching aid, the relation between resistance and material, length, cross -section area and temperature can be directly shown, and the bright and dark of electric bulb and the change of ammeter value are matched, help student to understand resistance law, and operation is safe and convenient, and the teaching effect is improved.

The utility model provides a load switch and an ammeter, and relates to the technical field of power equipment, the load switch comprises a housing, and a moving contact assembly, a detection switch and a driving assembly which are installed in the housing along a first direction, the detection switch is located at one side, close to the moving contact assembly, of the driving assembly, and the driving assembly is in driving cooperation with the moving contact assembly and the detection switch. The driving assembly is used for driving the detection switch in the process of driving the moving contact assembly to be switched on or switched off, and the detection switch is used for outputting an electric signal representing switching on or switching off of the moving contact assembly. According to the design, the spare space between the moving contact assembly and the driving assembly is fully utilized, and the internal layout of the whole load switch is optimized, so that the problem of extra occupied space is avoided, and the compact and miniaturized design of the load switch is facilitated. Besides, the detection switch is arranged between the moving contact assembly and the driving assembly, so that the driving assembly can smoothly drive the detection switch when driving the moving contact assembly, and high efficiency and accuracy of the monitoring process are ensured.

The application discloses a broken line detection equipment of an aviation plug convenient to connect, relates to the aviation plug detection technical field and comprises a main body mechanism, a detection mechanism is arranged in the main body mechanism, a plug mechanism is fixedly connected with an output shaft of the main body mechanism, the main body mechanism comprises an outer shell, a socket is fixedly connected to the side of the outer shell, a contact device is fixedly connected to the inside of the socket, a supporting plate is fixedly connected to the bottom of the side of the outer shell, a transparent plastic cover is fixedly connected to the top of the outer shell, and a back plate is movably connected to the side of the outer shell. When the contact is inserted into the inside of the integrated block, a complete electric circuit is formed, at this time, the plug transmits the current to the inside of the conductive sheet one through the conductive plate one, the current is transmitted to the inside of the conductive sheet two through the contact, at this time, the current is transmitted to the inside of the ammeter through the power transmission line, and the current reading at this time is read out through the ammeter.