795 results about "Shunt Device" patented technology

The invention discloses an electricity meter terminal temperature anomaly identification method, system and device and a storage medium, and relates to the technical field of intelligent electricity meter monitoring and anomaly detection.The method comprises the steps that currents of a live line loop and a zero line loop of an intelligent electricity meter are sampled, and the deviation rate of the live line current relative to the zero line current is calculated; estimating the temperature of the terminal of the electric energy meter based on the deviation rate and by using the resistance characteristic metering error change trend of the manganese-copper shunt; and when the terminal temperature estimated value of the electric energy meter exceeds a preset threshold value, determining that the temperature of the live wire terminal is abnormal, and recording an alarm event. The method realizes real-time acquisition of current difference characteristics, provides a reliable data basis for subsequent terminal temperature estimation, realizes a method of indirectly reflecting terminal temperature rise through electrical characteristics, ensures that alarm can be triggered and a complete tracing chain can be formed when temperature abnormity occurs, and improves the accuracy of terminal temperature estimation. Therefore, the controllability of the operation safety of the electric energy meter and the completeness of post analysis are improved.

A fast response time coaxial tube shunt with a single-layer tubular resistor structure is provided. A resistor tube is formed on the outer surface of an insulating tube. An insulating coating is provided on the outer surface of the resistor tube so that the outer conductive tube and the resistor tube can be designed to be as close as possible. When a large pulse current passes through, since the thickness of the resistor tube can be controlled to the μm level, the response time of the coaxial tube shunt can theoretically be in the ps level. At the same time, since the currents passing through the outer conductive tube and the resistor tube are equal in magnitude and opposite in direction, and the distance between the two is extremely close, the residual inductance of the coaxial tube shunt can be made extremely small, which greatly reduces the overshoot phenomenon of pulse current measurement and improves the accuracy of fast rise time pulse current measurement.

The invention discloses an electric meter historical data restoration method based on a multi-dimensional incidence relation, and relates to the technical field of electric power data management and intelligent restoration, the accuracy and traceability of data restoration are realized by establishing a multi-source exception type library and an element time-varying degradation model, and the accuracy and traceability of data restoration are improved for multi-source data conflicts. The method comprises the following steps: pre-defining a plurality of abnormal mode combinations and corresponding repair strategies, positioning a fault source through mode matching of a real-time index and an abnormal type library, selecting reference data in combination with a historical average deviation rate of a target ammeter and an associated ammeter, avoiding deviation caused by single judgment, and for nonlinear degradation, firstly determining fault elements of a shunt and an ADC chip, a resistance degradation model and a conversion error model are constructed, a theoretical correction value is calculated, a result is optimized through a machine learning model trained by historical normal data, meanwhile, original readings, model parameters and calculation bases are stored in an associated mode, a traceable log is formed, and the repair accuracy is guaranteed.

The utility model relates to an integrated shunt excitation device. The integrated shunt excitation device specifically comprises an excitation fuse, a trigger module and a shunt module, the excitation fuse comprises an electronic ignition assembly, a piston and a conductive piece. The diverter module is connected in series in the conductive part to replace the part, needing to be disconnected, of the conductive part, the trigger module is connected with the diverter module and the electronic ignition assembly, and the trigger module starts the electronic ignition assembly according to a received current signal monitored by the diverter module when the current signal exceeds a set threshold value. The trigger module sends a trigger signal to the electronic ignition assembly to enable the electronic ignition assembly to act to release high-pressure gas to drive the piston to disconnect the diverter module and disconnect the main loop. According to the invention, the diverter replaces the to-be-disconnected part of the conductive member, so that the conductive member is relatively simple in structure, and the excitation device is smaller in size.

The invention discloses a multi-pipeline shunting device for near-zero starting of an alkaline electrolytic cell, and belongs to the technical field of electrolytic cells for hydrogen production through water electrolysis. An alkaline electrolytic cell module is formed by connecting a plurality of small electrolytic chambers which are regularly arranged in parallel, and a small heating device is arranged between any two adjacent small electrolytic chambers; each small electrolysis chamber is provided with a cathode liquid inlet and an anode liquid inlet; and each small electrolysis chamber is provided with a cathode liquid outlet and an anode liquid outlet. Impact of starting current on key components such as electrodes and diaphragms of the electrolytic cell is greatly reduced by applying a multi-pipeline shunting technology, and the service life of the electrolytic cell is prolonged; the lye is conveyed through multiple pipelines simultaneously, and the temperature of the electrolyte is accurately adjusted in a stepped manner by combining small heating devices arranged in the pipelines, so that the electrolytic bath is quickly started. The hydrogen production efficiency can be improved, the unit-position hydrogen production cost is reduced, the overall performance of the alkaline electrolytic cell is improved, and wide application of the alkaline water electrolysis hydrogen production technology is promoted.

The invention discloses a network shunting device cascade system, and relates to the technical field of network communication, and the data volume of a service flow message processed by a first shunting device is not limited by the number of input ports of the first shunting device; the first shunting devices in communication connection can distribute the service flow messages to each other. Therefore, the situation that the bandwidth resources of a part of the first shunting equipment are in an idle state and the bandwidth resources of a part of the first shunting equipment are in a busy state in the prior art is avoided. Therefore, the bandwidth resource of the shunting equipment is fully utilized, and the situation that the service flow message is not processed in time is reduced.

The invention relates to the technical field of power grid equipment, in particular to a lightweight electric shunt with a temperature monitoring function and a monitoring system. The lightweight electric shunt with the temperature monitoring function comprises a temperature monitoring system, and the temperature monitoring system comprises a temperature detection module used for detecting real-time temperature information of the electric shunt in real time; the control module is used for collecting real-time temperature information and forwarding the real-time temperature information; meanwhile, whether the real-time temperature in the real-time temperature information is larger than a preset temperature threshold value or not is analyzed, and when the real-time temperature in the real-time temperature information is larger than the preset temperature threshold value, early warning information that the real-time temperature is larger than the preset temperature threshold value is output; the wireless communication module is connected with the control module and used for receiving the real-time temperature information and sending the real-time temperature information to a remote monitoring system; and meanwhile, the early warning information that the real-time temperature is greater than the preset temperature threshold is received and the alarm signal is output to trigger the alarm, so that the safety of the power grid equipment is improved.

A bridgeless power factor correction (PFC) control circuit includes a non-linear current sensor. The non-linear current sensor includes a non-linear shunt, a comparator, and a reference voltage circuit. The non-linear shunt includes a capacitor connection terminal and a ground terminal. The comparator includes a first input, a reference voltage input, and a zero-crossing detector output. The first is input coupled to the capacitor connection terminal. The reference voltage circuit is coupled to the reference voltage input.

The invention discloses a withstand voltage test method and device for transformer production and a medium, and belongs to the technical field of transformer tests.The method specifically comprises the steps that firstly, a frequency conversion test power source is connected to the input end of a to-be-tested transformer and connected with a high-precision non-inductive shunt in series, and an environment monitoring unit is started to lock temperature and humidity in real time; the control power supply outputs a standard sine test voltage with a preset frequency; then, a high-frequency broadband acquisition card is used for synchronously obtaining instantaneous waveform data of voltage and total leakage current of the transformer, and analog signals are converted into discrete digital signals; performing second-order difference on the total leakage current signal to position a high-frequency abrupt change point, and reconstructing a smooth waveform through Lagrange interpolation; a current phase difference is calculated by taking a voltage zero crossing point as a phase reference, a complex plane coordinate system is constructed, and resistive and capacitive current components are calculated through waveform amplitude projection; and finally, according to the temperature and the humidity, a correction coefficient is called to normalize the resistive current, and a quality inspection result is output by comparing an insulation safety threshold.

The embodiment of the invention discloses a shunt current measurement compensation method. The method comprises the following steps: acquiring an update voltage and an update current of a shunt and a sampling temperature corresponding to a first temperature sampling point; determining dissipation power according to the update voltage and the update current, and calculating an actual temperature corresponding to the shunt according to the dissipation power and a sampling temperature corresponding to the first temperature sampling point; compensating the updated voltage according to a preset linear temperature formula and the actual temperature corresponding to the diverter to obtain a compensation resistor corresponding to the diverter; and obtaining a measurement voltage corresponding to the shunt, and obtaining a compensation current corresponding to the shunt according to the compensation resistor and the measurement voltage. By implementing the embodiment of the invention, the accuracy of current measurement can be remarkably improved, and the accuracy of current measurement can also be ensured under the condition of long-time operation or environment temperature change.

The invention relates to the technical field of electronic measurement, and particularly discloses a multi-channel synchronous shunt calibration and data analysis system. The system comprises a signal acquisition front end, a delay measurement and compensation module, a synchronous control module, a data analysis and processing module and a system calibration interface, channel delay deviation is measured through a high-precision time-to-digital conversion circuit, and hardware compensation is realized in combination with a programmable delay line array. And a channel delay model and a recursive estimation algorithm are utilized to dynamically track delay drift caused by environment change, so that dynamic recovery and long-term maintenance of nanosecond-level synchronization precision are realized, and the environmental adaptability and synchronization stability of the system are remarkably improved.

The invention discloses a manganin current sampling on-line self-correction method and system of an intelligent fusion terminal. The method and system are applied to the intelligent fusion terminal comprising a manganin diverter assembly. The assembly comprises a working resistor connected in series in a main current loop and a reference resistor for monitoring, the working resistor and the reference resistor are thermally coupled, and the reference resistor does not bear working current during normal sampling. The method comprises the following steps: respectively measuring real-time resistance values of the two resistors in a silent working window period; calculating a current actually measured resistance value ratio; obtaining an ideal resistance value ratio of the two in a stress relaxation-free ideal state; obtaining a correction resistance value ratio variable quantity according to a difference value between an actual measurement ratio and an ideal ratio; and finally, calculating a correction coefficient and updating a sampling channel parameter so as to compensate resistance drift caused by long-term electric thermal stress and realize automatic correction of subsequent current sampling. According to the method, on-line and high-precision self-correction independent of an external reference is realized, and the problem of long-term stress relaxation of a manganese-copper material is effectively solved.

The utility model discloses a power battery system and relates to the technical field of power batteries. The device specifically comprises a box body, a high-voltage plug connector is arranged on the side wall of the box body, and a BDU, a BMS, at least two battery cell modules, a shunt, a main negative relay and a fuse are arranged in the box body; the positive end of the high-voltage plug connector, the BDU, the at least two battery cell modules, the shunt, the main negative relay, the fuse and the negative end of the high-voltage plug connector are sequentially connected in series through an overcurrent copper bar to form a loop; the BMS is electrically connected with the battery cell module, the BDU, the fuse and the shunt; and a PTC (Positive Temperature Coefficient) heating module for adjusting the temperature of the battery cell module is also arranged in the box body. Potential safety hazards caused by dry burning of a heating film are avoided, so that the safety of a power battery system is improved.

A linear motor conveyor system including: a moving element comprising at least one magnetic element and at least one bearing; a first track comprising a first linear motor, the first track configured to have a first rail on which the at least one bearing of the moving element runs and the first linear motor is configured to generate a dynamic magnetic field which acts on the magnetic element; a second track having at least a transfer region positioned adjacent the first track, the second track configured to have a second rail on which the same at least one bearing runs while in the transfer region.

The invention provides a flow shunting and forwarding method and device, electronic equipment and a storage medium, relates to the technical field of data communication, and is applied to a shunt forwarding system. The shunt forwarding system comprises a front-end light splitting acquisition system, a shunt (an exchange forwarding unit and a service logic processing unit taking a programmable exchange chip as a bottom plate) and a rear-end service system. The method comprises the following steps: the front-end light splitting acquisition system acquires original flow data; the original flow data is accessed to the diverter through a switching chip of the diverter, and target flow data is obtained after the original flow data is processed through a switching forwarding unit or target flow data is obtained after the original flow data is processed through a service logic processing unit based on the service processing type of the original flow data; and the switching forwarding unit of the shunt forwards the target flow data to a back-end service system. According to the invention, finer convergence and shunting of the traffic screening function are realized, part of back-end processing tasks are moved forward, and the precision of traffic screening and the quality of back-end service traffic are greatly improved.

The invention discloses a batch feeder and a control method, and relates to the technical field of feeding devices, the batch feeder comprises a rack and a material storage tank, the rack is provided with a weight sensor and a supporting block, and the material storage tank is movably connected with the rack, so that the weight change of the material storage tank in the feeding process is measured, and quantitative feeding is realized. The supporting block is provided with a first sealing piece arranged on the periphery of the flow divider in a sleeving mode, it can be ensured that the storage tank and the flow divider can move relative to each other, vibration can be prevented from being transmitted to the storage tank and the weight sensor, and accurate measurement is achieved. The first sealing piece can achieve sealing, and air leakage and material leakage are avoided. The flow divider is provided with an air inlet channel, the air inlet channel is communicated with the flow dividing cavity of the flow divider, and the draught fan can inject high-pressure airflow into the air inlet channel so as to remove agglomerated and blocked materials and relieve the material blocking condition. The invention further comprises a control method, according to the method, whether material blockage occurs or not is judged by detecting the weight change rate of the material storage tank, continuous feeding operation can be ensured through blowing of the back flushing device after material blockage, and good feeding efficiency is kept.

The invention discloses a temperature and humidity control shunting device and a gluing developing machine, and relates to the technical field of wafer processing. A main pipeline is connected with an air outlet of THC equipment, so that the temperature and humidity of gas supplied into a shunting box are the same, and the temperature and humidity of the gas are equal by means of shunting of four uniformly distributed shunting pipelines and conveying of pipelines with the same length and specification; homologous constant-temperature and constant-humidity gas is conveyed into the four cavities, synchronous control over the supply temperature and humidity of airflow in the four cavities is achieved, interference to the constant-temperature and constant-humidity gas in the conveying process can be reduced, and the precision control over the temperature and humidity in the wafer gluing operation process can be effectively improved; the stability of the working environment of the equipment is effectively ensured, and the device is suitable for precision equipment with higher environmental requirements.

A circuit includes a transistor configured to control pre-charging a charge storage device, and a diode coupled in parallel with the transistor. It also includes a shunt resistor coupled between the source of the transistor and a positive end of the charge storage device, an inductor coupled between the shunt resistor and the positive end of the charge storage device, and a current controller coupled to a gate of the transistor. The current controller is configured to receive a current measurement indicating an amount of current flowing through the transistor, process the current measurement to determine a switching duty cycle for the transistor, and to provide a signal to the gate of the transistor, the signal oscillating at the switching duty cycle. It also includes a power supply coupled with the source of the transistor and the drain of the transistor and configured to supply power to the current controller.

The invention discloses a high-voltage diverter and a sampling device, and belongs to the technical field of diverters, the high-voltage diverter comprises a main body mechanism, and the main body mechanism is internally provided with a disconnection mechanism used for automatic disconnection when a fault occurs and two terminal mechanisms used for wiring; through the linkage design of the built-in temperature sensing piece and the disconnecting mechanism, automatic and accurate fault protection is achieved, when the internal temperature of equipment abnormally rises due to faults and exceeds a safety threshold value, the temperature sensing piece is heated to deform and triggers the disconnecting mechanism, energy stored by the extension spring is used for rapidly driving the on-off connecting piece to act, a main circuit is reliably disconnected, and the safety of the equipment is improved. Meanwhile, the action can be linked with the top protruding block to be self-locked and protrude out of the surface of the protection shell, an intuitive and striking mechanical fault indicator is formed, accident expansion is effectively prevented, definite fault point positioning can be provided for operation and maintenance personnel, the troubleshooting time is shortened, and the safety and maintainability of the system are improved.

The utility model relates to charging pile technical field especially, it relates to a charging pile, including box, the box has first side wall and second side wall, third side wall and fourth side wall, is equipped with the mounting cavity in the box, and the mounting cavity includes the first area between first side wall and intermediate relay, second area and third area, input piece is arranged in the first area, and input piece is used for connecting with commercial power, positive pole assembly and negative pole assembly are arranged in second area along first direction interval, and negative pole assembly includes the fuse and first relay, and positive pole assembly includes the shunt and second relay, and the fuse is connected with first relay electricity, and the fuse is connected with the negative pole of power supply electricity, and first relay is connected with output piece electricity, and the shunt is connected with second relay electricity, and the shunt is connected with the positive pole of power supply electricity, and second relay is connected with output piece electricity, and output piece is used for connecting with charging gun electricity. The components of box are arranged relatively neat, and it is convenient to install.

The invention discloses a self-adaptive current shunt based on multi-objective optimization and a load balancing system thereof, the self-adaptive current shunt mainly comprises a processor and a memory, and during execution, the following steps are realized: collecting current of each branch to form a current distribution vector; collecting the temperature of each branch to form a temperature distribution vector, and calculating a current average value and a temperature average value; constructing a multi-objective optimization function fusing current uniformity and temperature balance; solving the optimization function based on a Lagrange multiplier method and a gradient descent algorithm, and calculating the optimal shunting proportion of each branch through an iterative update formula; evaluating the influence of the optimized shunting scheme on temperature distribution by using a temperature change prediction model; and converting the calculated optimal shunting proportion into the position of the sliding contact arm to control the sliding contact arm to move to the calculated optimal position, thereby realizing self-adaptive shunting of the current. The method has the following beneficial effect that the problems of local hot spot effect and system reliability caused by uneven current distribution are solved.

The invention relates to a dynamic balancing machine test bench, and relates to the technical field of balancing machines, the dynamic balancing machine test bench comprises a dynamic balancing machine body and a console used for controlling the dynamic balancing machine body, one side of the dynamic balancing machine body is provided with an air pump, the upper end of the air pump is communicated with an air pipe, the air pump is electrically connected with the console, the air pipe is communicated with a flow divider, the flow divider is communicated with a flow dividing pipe, and the flow dividing pipe is electrically connected with the console. A mounting table is arranged on one side of the dynamic balancing machine body, a height adjusting assembly used for changing the height of the mounting table is arranged on the lower portion of the mounting table, an annular rail is fixedly connected to the mounting table, an arc-shaped sliding rail is slidably connected to the annular rail, and a positioning pipe and a fixing assembly used for fixing the positioning pipe to the arc-shaped sliding rail are arranged on the arc-shaped sliding rail. The flow dividing pipe is fixedly connected and communicated with the positioning pipe, and an adjusting assembly used for adjusting the position of the arc-shaped sliding rail is arranged on the mounting table. The method has the effect of improving the detection precision of the dynamic balancing machine.

The invention provides a probe absolute delay measurement system, which comprises a pulse voltage source, a non-inductive resistor, a delay reference channel, a measurement channel and a signal acquisition analyzer, and is characterized in that the delay reference channel is provided with a coaxial shunt between the pulse voltage source and the non-inductive resistor; the measuring channel comprises a voltage probe measuring channel or a current probe measuring channel and is provided with a voltage probe or a current probe, and the signal acquisition analyzer is respectively connected with the output end of the coaxial shunt and the output end of the voltage probe or the current probe. According to the invention, the coaxial shunt used for detecting the high-frequency current signal is arranged between the pulse voltage source and the non-inductive resistor, so that the delay reference channel is formed, and accurate delay reference is provided for absolute delay measurement of the voltage probe or the current probe. The invention further provides a probe absolute delay measuring method.

An apparatus includes a plurality of gain stages connected in parallel between a first bias voltage and ground, where each gain stage includes an amplification portion and a current control portion including a first selectable signal path connected between an output of the amplification portion and a signal output, and a second selectable signal path connected between an output of the amplification portion and a signal output. And a second selectable signal path connected between the output of the amplification section and ground by a shunt device.

1. The name of the design product: multimeter shunt. 2. The use of the design product: used with multimeter to shunt 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.

The invention discloses a direct-current universal polarity measuring instrument, which relates to the technical field of absorption tower flue inlet flushing, and comprises a measuring unit, an instrument box, a direct-current meter, a shunt, a resistor, four groups of binding posts, a knob and a battery, and the storage unit comprises an isolation plate, two trigger assemblies, a buckle, a jacking assembly, a connecting column and a fixing piece. The instrument box has the beneficial effects that complete separation of the binding post and the line in a non-use state is realized, the risk of short circuit of the line is effectively avoided, the binding post is quickly recycled in the instrument box, and the situation that dust easily falls on the inner side of the binding post, and normal use of the binding post is affected is prevented. In addition, damage possibly caused by frequent plugging and unplugging of the binding post in the prior art is avoided, and the effects of quick separation and adaptation of various models can be achieved.

A single-phase electricity meter comprises a shell and an electricity connection structure arranged in the shell, a circuit board is connected to the electricity connection structure, the electricity connection structure comprises a junction box and a plurality of binding posts arranged in the junction box in a press-in mode, diverters are connected to the binding posts, and the diverters are in hard connection with the circuit board; compared with the prior art, the wiring terminal is arranged in the wiring box in the press-in direction, and other structures are not needed to connect the wiring terminal with the wiring box, so that the structure of the wiring box is simpler, the sealing effect of the wiring terminal installed in the wiring box is ensured, and the wiring terminal is more convenient to install through hard connection of the diverter on the wiring terminal and the circuit board. The connection strength of the diverter and the circuit board is ensured, the situation of disconnection between the binding post and the circuit board is avoided, and the quality of the ammeter is improved.

A control device of a high-power silicon-controlled direct-current power supply belongs to the technical field of power electronics. The technical problem to be solved by the utility model is to improve the control precision of a silicon controlled rectifier direct-current power supply, the input end of a first differential amplifier is connected with a first resistor, the input end of the first differential amplifier is connected with the output end of a third differential amplifier, and the first resistor is connected with a first capacitor; the first capacitor is respectively connected with the output end of the first differential amplifier, the output end of the second differential amplifier and the single-path direct current power supply; the first input end of the second differential amplifier is connected with a second resistor, the second input end of the second differential amplifier is connected with the output end of the third differential amplifier, the second resistor is connected with a second capacitor, and the second capacitor is connected with the output end of the second differential amplifier; the single-path direct-current power supply is connected with the shunt, the shunt is connected with the third resistor, and the third resistor is connected with the first input end of the third differential amplifier and the first input end of the fourth differential amplifier. The control precision is improved.

The present disclosure relates to an integrated power panel. The system includes one or more busbars coupled to the AC line, branch relays each coupled to the busbars and a respective circuit breaker, and current sensors each corresponding to at least one respective branch relay of the plurality of branch relays. The system also includes an air interface disposed in front of the plurality of branch relays and including openings corresponding to the branch relays, allowing an electrical terminal of each branch relay to protrude forward through a respective opening. A circuit breaker engages with each respective branch relay on a null junction to create an array of branch circuit breakers. The combination of relays and circuit breakers allows each branch circuit to be controllable. The relay may include a current sensor, such as a shunt, for determining branch circuit current and controlling the relay. Control circuitry manages relay switch operation and monitors branch circuit operation.

Device (100) for starting up a granulating device, in particular one downstream of an extruder, comprising: a granulating device, such as a dry granulating device, for granulating a strand of material; a conveying line (102) coupled to the granulating device for granules, wherein the conveying line (102) leads from the granulating device in a conveying direction to a classifying device for classifying the granules; and a diverter (104, 200) arranged in the conveying line (102) for diverting the granules from a feed line (106) into one of at least two discharge lines (108, 110), wherein the diverter (104, 200) comprises: - a housing (112, 208) with a feed opening (114, 206), at least one first discharge opening (116) and at least one second discharge opening (118); and - a flap (120, 214) which is pivotable in the housing (112, 208) about a pivot axis (122) between a first conveying position in which a first conveying passage (124, 218) between the feed opening (114, 206) and the first discharge opening (116) is released while closing off a second conveying passage (126, 220) between the feed opening (114) and the second discharge opening (118), and a second conveying position in which the second conveying passage (126, 220) between the feed opening (114) and the second discharge opening (118) is released while closing off the first conveying passage (124, 218) between the feed opening (114) and the first discharge opening (116), wherein the diverter (104, 200) is designed to divert start-up material, such as granulate material, during a start-up process of the granulating device and wherein at least one guide section (142, 202), such as a guide element and / or deflector plate, is provided in the area of ​​the feed opening (114, 206) to guide the granulate over an edge and / or end face (144, 212) of the flap (120, 214).