93 results about "Current clamp" patented technology

The invention provides a calibration system and method for a fluxgate current sensor, the system comprises a power supply module, a test tool module and a current clamp clamped on the input hole wall of the fluxgate current sensor, the power supply module is connected with the test tool module, and the test tool module is connected with the current clamp; the test tool module comprises a control circuit, a current source circuit, a multipath controller circuit and an interface circuit, the control circuit is respectively connected with the current source circuit and the multipath controller circuit, and the current source circuit is connected with the current clamp through a calibration interface in the interface circuit; and the multi-path controller circuit is used for being connected with a fluxgate current sensor through a sensor communication interface in the interface circuit. According to the invention, the problems of easy overload of power supply, high current source cost of large current and high precision and the like of the vehicle-mounted fluxgate current sensor in test calibration due to the characteristics (such as small internal resistance of a magnetic probe coil and large starting current) are solved.

The invention provides an error amplifier for peak current mode control and a converter system. The error amplifier comprises a transconductance amplifier, a voltage clamping module, a voltage-current converter, a slope compensation module, a current clamping module and a mirror image tube, the negative end of the transconductance amplifier is used for loading feedback voltage, and the positive end is used for loading reference voltage; the output end of the transconductance amplifier, the output end of the voltage clamping module and the input end of the voltage-current converter are electrically connected; the voltage-current converter generates error current; the slope compensation module is used for performing slope compensation on the error current to generate a compensated current; the output end of the slope compensation module, the output end of the current clamping module and the positive end of the high-side comparator are electrically connected with a second reference node; and the mirror image tube is used for loading the comparison voltage to the positive end of the high-side comparator. The error amplifier provided by the invention can realize more stable mode switching and more accurate current limiting control.

A driver system comprising a bridge driver section, a switch FET section comprising: a drive stage section, a device section, and a current limiting section, wherein the switch FET section electrically couples the bridge driver section to the device section, wherein the fast current clamp is electrically coupled to the device section. By using the drive-bridge configuration, the gate capacitance of the switch FET can be charged and discharged quickly enough to meet the edge rate requirements. The switch FET is driven into and out of saturation such that the current through the device section is either on or off.

The invention discloses a multi-point grounding conduction tester and a detection method thereof, a current clamp meter is independently arranged, shunt current of each grounding point of multi-point grounding equipment can be independently detected, detection failure caused by poor grounding of the grounding points of the multi-point grounding equipment is avoided, and the multi-point grounding conduction tester and the detection method thereof are suitable for detection of the multi-point grounding equipment. And meanwhile, the detection current between the two points can be corrected by calculating the shunt coefficient, so that the accuracy of the calculation result of the on-resistance is improved, and the grounding effect is better evaluated.

The utility model relates to a current clamp and clamp type current monitoring equipment, and belongs to the technical field of current monitoring. The utility model provides a current clamp which comprises a shell, two clamp bodies and a linkage assembly, each clamp body comprises a driving section and a clamping section which are connected, the driving sections of the two clamp bodies are rotationally connected with the shell so that the two clamp bodies can be in an open state and a closed state, the clamping sections are in an arc shape, and when the two clamp bodies are in the closed state, the two clamp bodies can be driven by the linkage assembly. The two clamping sections abut against each other and enclose to form a closed clamping ring; the linkage assembly comprises a pushing piece arranged between the two clamp bodies, and the pushing piece is at least connected with one clamp body so as to drive the other clamp body to rotate reversely when one clamp body rotates at least in the process that the two clamp bodies are converted from the closed state to the open state. The current clamp and the clamp type current monitoring device at least solve the problem that in the prior art, the action stroke of the current clamp is long in the opening and closing process.

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 discloses a dual-active-bridge converter for low voltage and high power and a control method thereof, and belongs to the technical field of dual-active-bridge converters, and the dual-active-bridge converter comprises a low-voltage full-bridge switch, a high-voltage full-bridge switch, a high-frequency transformer, a boost inductor LBoost, an external series inductor Lseries, a low-rated-current clamping diode Dclamp1 and a low-rated-current clamping diode Dclamp2. The power supply is connected in parallel with the filter capacitor CLV; the filter capacitor CLV is connected in series with the boost inductor LBoost, and the other end of the boost inductor LBoost is connected with a common node of the low-voltage full-bridge switch; the secondary side of the high-frequency transformer is led out through a center tap, the upper portion and the lower portion of the high-frequency transformer are connected with a low-rated-current clamping diode Dclamp1 and a low-rated-current clamping diode Dclamp2 respectively, and meanwhile one end of the secondary side of the high-frequency transformer is connected with an external series inductor Lseries and then connected with the high-voltage full-bridge switch. The dual phase shift modulation (DPSM) can improve the performance of the converter under light load, and has the advantages of few components, simple circuit and the like.

This invention discloses an in-memory argmax calculation system based on memristors, belonging to the field of integrated circuit technology. It includes an n x m 1T1R array, a WTA circuit, and m one-step readout and comparison modules. Each one-step readout and comparison module includes a voltage clamping circuit, an NMOS current mirror, and a PMOS current mirror. Considering hardware limitations, when the binary number in the vector to be compared is less than or equal to a preset number, the vector to be compared is stored column-wise by the 1T1R array. The reference voltage clamp accurately reads the column current, the current mirror scales the column current proportionally, and the WTA circuit compares different column currents in one step, enabling fast, efficient, and low-power one-step readout of the comparison result. This invention integrates current clamping readout, scaling, and comparison within the same readout cycle, avoiding multi-cycle operations and intermediate data buffering, improving computational efficiency, reducing system latency, and eliminating the need for complex external circuits, resulting in low power consumption.

This invention relates to a power meter-based system for collecting and controlling the actual energy consumption of an industrial robot, belonging to the field of robot data acquisition and control technology. It solves the problem that existing methods cannot accurately obtain real-time energy consumption data during the robot's actual working state. The invention uses a power meter, voltage clamp, and current clamp to collect raw voltage and current data during the industrial robot's operation and uploads it to a host computer. The data processing module in the host computer performs filtering processing, and the power calculation module integrates the power signal vector to obtain the average power of the industrial robot during actual operation. The motion control module uses a control program to manipulate the industrial robot's free movement within its workspace through the industrial robot controller. The host computer sends motion commands to the industrial robot controller via a communication module, and the industrial robot controller returns joint information of the industrial robot to the host computer in real time.

The invention provides a welding power source system and method for achieving high-frequency editable pulse current output, and belongs to the field of welding power sources, the welding power source system comprises a TIG welding gun, an oscilloscope and a gas protection device, the TIG welding gun is connected with a high-frequency waveform editing module, the high-frequency waveform editing module is connected with an inductor and an FPGA control panel, the inductor is connected with a multi-output constant current source, and the multi-output constant current source is connected with the oscilloscope. The oscilloscope is connected with the TIG welding gun through a current clamp, and the gas protection device is connected with the TIG welding gun through a gas pipe. According to the welding power supply system and method for achieving high-frequency editable pulse current output, the high-frequency waveform editing module formed by sampling three paths of switching circuits in parallel can provide more waveform selections and more accurate current output on the premise of maintaining stable combustion of an electric arc; a special switch time sequence is matched with synchronous rectification, so that circuit heating can be reduced, the accuracy of current waveforms is improved, heat input can be accurately controlled, arc energy gradient distribution is optimized, and the welding seam quality is improved.

The utility model discloses a kind of amorphous alloy three-dimensional roll iron core annealing monitoring models, comprising: support, amorphous alloy three-dimensional roll iron core, high voltage coil, low voltage coil, insulating iron hoop, ac frequency modulation power supply, magnetized busbar and power analyzer, high voltage coil and low voltage coil are set in the upper yoke portion of amorphous alloy three-dimensional roll iron core;Insulating iron hoop is used to fix amorphous alloy three-dimensional roll iron core;Magnetized busbar is supported by insulating support plate and placed in the inner frame of the iron core;Ac frequency modulation power supply is electrically connected with high voltage coil;Voltage clamp and current clamp are electrically connected with low voltage coil respectively;Power analyzer is electrically connected with the voltage clamp and current clamp.

This invention provides an intelligent visual detection system and method for special light source switching power supplies, belonging to the field of instrument testing technology. The system includes a non-invasive signal sensing layer, a data processing layer, and an intelligent application layer. The sensing layer utilizes a high-frequency current clamp and a high-isolation voltage probe to acquire electrical signals through electromagnetic induction and capacitive coupling without interrupting power. The data layer performs adaptive signal conditioning and digital processing. The application layer, based on a multi-parameter fusion algorithm and aging model, performs health assessment, fault prediction, and visual interaction. This invention overcomes the safety hazards and low efficiency of traditional invasive detection methods, achieving automated and predictive maintenance of power supply detection, and ensuring detection accuracy and safety.

The application relates to the technical field of current detection, and particularly discloses a high-frequency AC / DC current probe, which comprises a current clamp body, the current clamp body has a clamping jaw structure which can be opened and closed and forms a detection channel for accommodating a cable; at least three positioning ropes are further arranged, the positioning ropes are distributed in the circumferential direction of the detection channel and form a positioning hole for accommodating the cable; one end of each of the positioning ropes is hinged to one side of the current clamp body, and the other end is connected with a winding shaft, the winding shaft is rotationally arranged on the current clamp body, and an elastic reset structure is arranged on the winding shaft and used for applying a tightening force to the positioning rope; by adopting the positioning ropes, self-adaptive center positioning of cables with different outer diameter specifications is realized, the structure can provide multi-directional balanced radial contraction force, automatically eliminates the length of the excess rope body, and stably restrains the cable in the center of the detection channel.

Current clamp monitoring systems are disclosed, and include a current clamp connector connectable to a current clamp, the current clamp connector being configured to power the current clamp and measure a voltage at an output interface of the current clamp corresponding to a current along a power line extending between a battery bank and a load, the power line extending through an aperture of the current clamp. A power connector is connectable to a battery bank to draw power from the battery bank to power the current clamp monitoring system.

This invention relates to the field of circuit breaker life prediction technology, specifically disclosing a method and system for predicting the mechanical life of a 10kV pole-mounted circuit breaker. The method includes acquiring multi-dimensional operating status signals of the circuit breaker, including the operating mechanism coil current sequence and main circuit phase current sequence acquired by Hall current clamp, as well as synchronously acquired operating bus voltage and ambient temperature. In practical power distribution network operation and maintenance applications, this invention effectively reduces the interference caused by harsh outdoor environments and power fluctuations on feature extraction by synchronously acquiring operating bus voltage and ambient temperature to perform benchmark calculations of initial mechanical degradation parameters, thus ensuring the objectivity and authenticity of the input model data.

The utility model relates to a valve performance diagnosis wiring mechanism and a valve performance diagnosis device. The valve performance diagnosis wiring mechanism comprises a rack, a female plug, a male plug and a plurality of connecting wires, wherein the female plug is electrically connected with a to-be-tested electric head of a valve electric actuating mechanism; the male plug is electrically connected with a signal and power source of a driving control switch mechanism; the female plug is arranged on the rack; the male plug is arranged on the rack; the connecting line is detachably connected between the female plug and the male plug, and two ends of the connecting line are electrically connected with the pins on the female plug and the male plug respectively; and at least one through hole is formed in the rack, so that a current clamp of the valve diagnosis acquisition mechanism can clamp the connecting wire through the at least one through hole. According to the invention, the operation process of the valve diagnosis and detection operation can be simplified, and potential risks such as disconnection and connection errors possibly occurring in the operation process are avoided.

The utility model discloses a fatigue testing device for a rotary speed reducer, which comprises a notch square box, the rotary speed reducer is fixed on the side wall of the upper plane of the notch square box, a swing arm is connected onto an output shaft of the rotary speed reducer, and a balancing weight is hung at the other end of the swing arm. The rotary speed reducers with different sizes can be quickly mounted on the notch square box; the swing arm can be loaded through different mounting holes and can support the torque range of 400-8000 Nm; a hook-shaped opening of the balancing weight is convenient to mount and can be mounted and dismounted by a single person; data is wirelessly transmitted through an electric control box antenna, a lora module is inserted into a computer, upper computer software is opened, and the data is inquired; data are transmitted through the electric control box, real-time current, angle and operation times in the testing process can be accurately known, and compared with a traditional current clamp and counter point inspection mode, the working efficiency and accuracy are improved by 60%.

The invention discloses an industrial robot actual energy consumption acquisition and control system based on a power meter, and belongs to the technical field of robot data acquisition and control. The problem that the real-time energy consumption of the robot in the actual working state cannot be accurately obtained in an existing mode is solved. A power meter, a voltage clamp and a current clamp are used for collecting original voltage and current data in the operation process of the industrial robot and uploading the original voltage and current data to an upper computer; after a data processing module in the upper computer performs filtering processing, a power calculation module performs integration on a power signal vector to obtain actual operation average power of the industrial robot; the motion control module uses a control program to control the industrial robot to move freely in a working space range through the industrial robot controller; the upper computer sends a motion instruction to the industrial robot controller through the communication module, and the industrial robot controller returns industrial robot joint information to the upper computer in real time.

The utility model discloses a double-pulse test platform capable of preventing connection wires from falling off, and particularly relates to the technical field of double-pulse test platforms, which comprises an experiment table and a plurality of current clamps, and is characterized in that the right part of the upper end of the experiment table is fixedly connected with a control cabinet body, and the left part of the upper end of the experiment table is fixedly connected with an external inductor body; a plurality of bearing plates are fixedly connected to the middle of the upper end of the external inductor body in a linear array distribution mode, the current clamps and the bearing plates are movably installed in a one-to-one correspondence mode, and a plurality of anti-disengaging assemblies are arranged in the middle of the upper end of the external inductor body in a linear array distribution mode. Reset assemblies are symmetrically arranged on the left portion and the right portion of the upper side of each bearing plate, and limiting assemblies and clamping assemblies are symmetrically arranged on the left side and the right side of each reset assembly. According to the double-pulse test platform capable of preventing the connection wire from falling off, the anti-falling assembly is arranged, and after the current clamp is inserted into the slot arranged in the anti-falling assembly, the plug part of the current clamp is pressed.

The utility model discloses a cable conductor direct current resistance testing machine, which comprises a measurement and control instrument and an automatic clamp, the measurement and control instrument is positioned on one side of the automatic clamp, the outer wall of the measurement and control instrument is provided with a control line and two groups of test lines, and the two groups of test lines are respectively positioned on the outer wall of the measurement and control instrument; according to the utility model, when the cable conductor is placed on the base surface of the current clamp and the pressure sensors at the two sides generate signals at the same time, the measurement and control instrument control device is enabled to operate, so that the practicability is better; according to the cable conductor direct-current resistance testing machine, effective detection of soft and hard cable conductors is achieved through the measurement and control instrument, the soft conductor is directly clamped and straightened by the current clamp and then measured, the hard conductor is straightened by the straightener and then clamped and measured, the measurement and control instrument controls the measurement process and processes measurement data, and multiple functions are supported; operation is simplified through electrical control of the automatic clamp, and practicability is better.

The utility model relates to the technical field of memories, and discloses a sensitive amplifier circuit, which comprises a current mirror unit used for mirroring a first reference current into a second reference current; the first reference current clamping unit comprises a first amplifier and a second NMOS tube; a first input end of the first amplifier is connected with a first reference voltage, a second input end of the first amplifier is connected with a source electrode of the second NMOS tube, an output end of the first amplifier is connected with a grid electrode of the second NMOS tube, and the first amplifier is used for clamping the source electrode voltage of the second NMOS tube; the unit current clamping unit comprises a second amplifier and a fifth NMOS tube; the first input end of the second amplifier is connected with a second reference voltage, the second input end of the second amplifier is connected with the source electrode of the fifth NMOS tube, and the output end of the second amplifier is connected with the grid electrode of the fifth NMOS tube and used for clamping the source electrode voltage of the fifth NMOS tube; the comparison unit is used for comparing the reference voltage with the comparison voltage to output a comparison result. The circuit achieves fast response while reducing the discrete range of memory bit line potentials. The utility model also discloses a memory.

The communication base station remote monitoring device comprises a communication tower, an insulating ring, a metal strip, a communication base station, a metal support and a connection detection mechanism, and the connection detection mechanism comprises a rotating mechanism, a conductive interface, a fixing ring, a power box, a first electric push rod, a lifting plate, an electrode tip, a spring wire, a second electric push rod, an opening and closing type current clamp and a main control unit. The electrode tip can descend to be connected with the conductive interface, so that the power box can convey current into the metal support, the open-close type current clamp can collect induced current on the metal support, and the main control unit can calculate a resistance value according to the induced current and reversely deduce whether the contact resistance of the metal support and the metal strip is reasonable or not. Whether the metal support loosens or falls off or not can be confirmed through the difference of the contact resistance, and when the metal support loosens or falls off, an alarm can be sent to a remote monitoring center through a communication base station in time, so that repair and maintenance can be carried out in time, and stable transmission of communication data is guaranteed.

The invention discloses an electric power verification non-contact anti-electricity-stealing detection method and system, and relates to the technical field of electric power detection, and the method comprises the steps: collecting a voltage signal and a current signal of a to-be-detected electric power circuit through a portable voltage non-contact anti-electricity-stealing detector non-contact voltage clamp and a portable voltage non-contact anti-electricity-stealing detector non-contact current clamp; performing real-time harmonic analysis on the collected current signal to obtain a harmonic component effective value and a fundamental current effective value; performing dynamic error correction on the current measurement value according to the effective value of the harmonic component and the effective value of the fundamental current; the actual electric energy error of the electric energy meter is determined according to the voltage value and the corrected current value, and whether the electricity stealing behavior exists or not is judged based on the actual electric energy error, so that the harmonic component condition caused by the power grid environment can be overcome, and harmonic waves caused by the electricity stealing load can be accurately identified and identified; the electricity larceny recognition efficiency and precision are improved, and meanwhile the high quality and high precision of current data are guaranteed.

The invention discloses a silicon adapter plate with a distributed ESD (Electro-Static Discharge) protection network and an ESD protection structure, which comprise an adapter plate body and the distributed ESD protection network, the distributed ESD protection network comprises an RC trigger MOS clamping unit layer and an embedded ESD diode network layer which are arranged at the upper end of the adapter plate body, a ground screen structure arranged at the lower end of the adapter plate body, and a TSV structure embedded in the adapter plate body; the TSV structure comprises a heat conduction TSV used for heat dissipation and a transmission TSV used for transmitting electric signals. The distributed ESD protection network is constructed in the silicon adapter plate, so that a cooperative mechanism of current clamping, current shunting and thermal diffusion is realized, the local electric field and temperature rise under an ESD event are remarkably reduced, the system-level anti-electrostatic breakdown capability and the long-term packaging reliability are improved, and the service life of the silicon adapter plate is prolonged. The method can be widely applied to high-bandwidth core particle interconnection, high-power radio frequency modules and heterogeneous integrated SoIC packaging.

The utility model discloses a clamp-type grounding resistance tester. The clamp-type grounding resistance tester comprises a machine body; the machine body is arranged on the shell; the rotating shaft is rotationally arranged on the shell; the current clamp is fixedly arranged outside the rotating shaft in a sleeving mode, and the current clamp is connected with the machine body through a wire; an abutting assembly, wherein the abutting assembly is arranged in the shell; wherein the current clamp comprises a handle and a clamp head movably arranged on the handle, and the handle is provided with a clamp handle used for controlling the clamp head to be opened and closed; when the current clamp rotates around the rotating shaft, the clamp handle can touch the abutting assembly. The fixing block is arranged in the shell, and the fixing block is arranged in the shell; the handle is fixed on the fixed block through the adsorption assembly; the current clamp protection device can protect the current clamp, and is convenient to operate and use.

The utility model discloses an electric energy quality analyzer easy to wire, which belongs to the technical field of electric power test equipment, and comprises an analyzer body, an alligator clip, a current clamp and a Rogowski coil, a plurality of sockets are arranged on one side of the analyzer body, a wiring assembly is arranged at the sockets, a plurality of groups of voltage test wires are arranged in the wiring assembly, and the voltage test wires are connected with the current clamp. A mounting groove is formed in the bottom of the analyzer body, and a magnet and a storage assembly are arranged in the mounting groove. According to the utility model, the wiring assembly and the voltage test wires are arranged, so that multiple groups of voltage test wires, the jacks and the storage assembly can be carried at the same time, the effect of convenient wire insertion and storage is realized, and when the voltage test wires are damaged, the corresponding voltage test wires can be dismounted and replaced; the alligator clip and the current clamp are fixed through the clamping part storage box, and the Rogowski coil is fixed through the coil storage box, so that disordered movement of the alligator clip, the current clamp and the Rogowski coil during carrying is avoided, and mutual winding of voltage test wires is avoided.

The invention relates to the technical field of current detection, particularly provides a detection system and method of a current coil, electronic equipment and a storage medium, and aims to solve the problem that the accuracy of a detection result of an existing current coil detection technology is relatively low. In order to achieve the purpose, the current coil detection system comprises a standard current source, a current coil, a calibration device, a current clamp, a digital ammeter and a calculation unit, under the condition that the current clamp clamps the current coil, the standard current source is configured to input a preset current value to the current coil, so that the digital ammeter detects a first current value induced by the current clamp; under the condition that the current clamp clamps the current-carrying conductor of the calibration device, the calibration device is configured to input a target current value to the current-carrying conductor, so that the digital ammeter detects a second current value induced by the current clamp; the calculation unit is configured to determine an actual output current value of the current coil based on the preset current value, the number of turns of the current coil, the first current value, and the second current value.

The application provides a test device and a test method, wherein the test device comprises a test load board and a start protection circuit arranged in the test load board, and the start protection circuit comprises: a current clamping circuit and a current regulating circuit which are connected; the current clamping circuit is used for clamping input current entering the test load board; and the current regulating circuit is used for controlling the clamped input current to gradually rise at a preset slope and output to a product to be tested. The application can be used for safe test power supply of the product to be tested.

The invention discloses an argmax in-memory computing system based on a memristor, which belongs to the technical field of integrated circuits, and comprises an n-row m-column 1T1R array, a WTA circuit and m one-step read-out and comparison modules, the one-step reading and comparing module comprises a voltage clamping circuit, an NMOS (N-channel Metal Oxide Semiconductor) current mirror and a PMOS (P-channel Metal Oxide Semiconductor) current mirror; in consideration of hardware limitation, when a binary number in a to-be-compared vector is smaller than or equal to a preset number, the to-be-compared vector is stored according to columns through a 1T1R array, column current is accurately read out through a reference voltage clamp, the column current is scaled in equal proportion through a current mirror, different column currents are compared in one step through a WTA circuit, and a comparison result is read out in one step rapidly and efficiently with low power consumption. Current clamping reading, scaling and comparison are integrated and completed in the same reading period, multi-period operation and intermediate data caching are avoided, the calculation efficiency is improved, the system delay is small, a complex peripheral circuit does not need to be introduced, and the power consumption overhead is low.

The invention discloses an intelligent electricity utilization inspection system and method based on cooperative measurement of a master machine and a slave machine, and relates to the technical field of electric power detection. The system comprises a host, a slave, a low-voltage current clamp and a flexible current clamp, the host is integrated with a microprocessor, a touch screen, a voice broadcast, a high-definition camera, a Beidou positioning module, a Bluetooth printing module, a security encryption chip and a one-key alarm module; the slave machine measures primary side current through the high-voltage pincerlike mutual inductor and is in wireless communication with the host machine. The method comprises the following steps: system self-inspection and equipment connection; the master machine and the slave machine wirelessly and synchronously measure a primary side signal and a secondary side signal; the host executes an intelligent algorithm, automatically judges a wiring mode and generates graphical data, a correction coefficient and an electric charge compensation result; carrying out field image evidence obtaining and bar code identification; generating a standardized report containing the electronic signature and printing the standardized report on site; according to the invention, the functions of measurement, diagnosis, evidence collection, calculation, signature and printing are integrated into a whole, the whole process of electricity utilization inspection from detection to issuing is intelligent and electronized, and the working efficiency, evidence effectiveness and field safety are remarkably improved.