206 results about "Electrical testing" patented technology

The invention discloses an electric arc characteristic-based alloy material electric contact performance electrical test method, which comprises the following steps of: providing basic information for a high-voltage rotating arc diffusion arc and intermediate-frequency large-current breaking simulation test by acquiring contact data of a circuit breaker, and triggering a controllable rotating arc or diffusion arc between contacts by utilizing an alternating-current high-voltage small-current system, so that the contact performance of the high-voltage rotating arc and the intermediate-frequency large-current breaking simulation test is realized. An intermediate-frequency low-voltage large-current system is used for simulating the on-off working condition of an intermediate-frequency circuit breaker, electrical performance data and ablation damage information of a contact under the action of an intermediate-frequency arc are collected, weighted calculation is carried out on the arc temperature, the electrical performance and an ablation index, and a comprehensive electrical contact performance index is generated; the performance of the alloy contact under different working conditions is comprehensively evaluated, the electric contact performance test of the alloy material is realized, and the test accuracy is improved.

The invention relates to the technical field of electrical test equipment, and discloses a circuit breaker mechanical characteristic tester, which comprises a detection assembly, the detection assembly comprises a box body, a detector body is arranged in the box body, a winder is arranged on one side of the detection assembly, a speed sensor assembly is arranged on the winder, and the speed sensor assembly is connected with the detection assembly. A universal frame is arranged on one side of the winder; the detector body is provided with a speed sensor interface; the speed sensor assembly comprises a speed sensor plug, and the speed sensor plug is matched with the speed sensor interface. By organically combining the winder, the speed sensor assembly and the universal frame, the problems of cable management and speed sensor plug fixation in a traditional tester are solved, the stability of signal transmission of the detection assembly in the detection process is ensured, signal interruption in the test process is avoided, and the test efficiency is improved. Therefore, the data acquisition accuracy and the test precision are improved.

1. Name of the product in this design: Electrician's Pliers (Electrical Testing Version). 2. Purpose of this design: For use in electrical construction processes such as wire stripping and crimping. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

A voltage and current testing device of a perovskite photovoltaic cell comprises a camera obscura body, a testing platform deck, an electrical testing board and a light source, the testing platform deck, the electrical testing board and the light source are located in the camera obscura body, and the electrical testing board is arranged on the testing platform deck and provided with a plurality of rows of probes. The plurality of rows of probes are used for being electrically contacted with electrodes of a plurality of rows of perovskite photovoltaic cells on the perovskite photovoltaic substrate; the light source is arranged at the top of the camera obscura body, faces the test platform deck and is used for providing illumination for at least one row of perovskite photovoltaic cells in the multiple rows of perovskite photovoltaic cells in the test process; the system also comprises a volt-ampere measurement module which is electrically connected with the electrodes of the at least one row of perovskite photovoltaic cells through the electrical test board, so as to form a test loop of each perovskite photovoltaic cell in the at least one row of perovskite photovoltaic cells, and measure the voltage and current in each test loop. According to the scheme provided by the invention, the high-flux parallel test of the perovskite photovoltaic cell can be realized, and the test efficiency can be improved.

The utility model discloses a test adapter plate and a chip test device. The test adapter plate comprises a control module, a gating module and a plurality of interfaces, the control module comprises a gating signal output end; the gating signal output end is electrically connected with the control end of the gating module; the plurality of interfaces comprise a plurality of first interfaces and a plurality of second interfaces; the first interface and the second interface are electrically connected through the gating module; the control module is used for providing a gating signal for the gating module; the gating module is used for switching a connection path between the first interface and the second interface according to the gating signal. According to the technical scheme of the utility model, automatic switching of connection paths between the test platform and a plurality of test instruments can be realized, so that the electrical test efficiency of the chip is improved.

The invention discloses a discrete combination optimization control method of a switchable series-parallel current limiting circuit based on an IGBT and a contactor, and relates to the technical field of power electronic control and electrical testing, the control method comprises the following steps: S1, a real-time sensing step: collecting a target current limiting value and a bus voltage of a system, and real-time state data of each reconfigurable power module, wherein the real-time state data at least comprises a current value, a voltage value and a device temperature. According to the discrete combination optimization control method of the switchable series-parallel current limiting circuit based on the IGBT and the contactor, by dynamically sensing a real-time working condition and constructing a discrete optimization model containing multiple targets, a scheme meeting static and dynamic performance requirements can be automatically and accurately screened out from massive possible topologies; the problems that a traditional fixed topology circuit is limited in adjusting range and insufficient in precision are solved, and the response reliability and the control accuracy of the system under the wide-range working condition are ensured.

The present disclosure provides a chip failure analysis method and device, which can solve the technical problem that related technologies cannot perform failure analysis on advanced processes. The method comprises: in the case of chip delayering to the contact layer, obtaining electrical measurement results by testing the combination of body diodes of a plurality of metal oxide semiconductor (MOS) tubes and testing the combination of MOS tubes and body diodes; and obtaining a chip failure analysis result according to the electrical measurement results. In the case of chip delayering to the contact layer (i.e. Via 0), the body diode effect of the MOS tube is utilized to directly determine whether Via 0 is abnormal through electrical measurement. The body diode of the MOS tube, the combination of the body diode and the MOS tube are utilized to quickly locate Via 0, and the chip failure analysis result is obtained. At most three pins are required for abnormal electrical testing, and the testing time is shortened by 50%. Furthermore, the carbon deposition on the surface of the sample is reduced, and the introduction of analysis noise is reduced.

The invention discloses a power panel automatic test method and system based on a drawer type jig, and belongs to the technical field of electrical testing, and the method comprises the steps: obtaining a serial number of a to-be-tested power panel to call a test program; identifying the ID code of the jig to carry out matching verification; the driving module is controlled to form preliminary contact, and a contact quality characteristic value is measured and generated; if the characteristic value does not reach the contact quality threshold value, generating a driving compensation parameter to adjust a driving module, and determining a final driving parameter; performing a comprehensive electrical test on the to-be-tested power panel to generate a test result; and associating the final driving parameter, the test result and the serial number information to generate process associated data. According to the invention, closed-loop iterative compensation is carried out on the driving module based on the contact electrical characteristics measured in real time, and the technical scheme of dual automatic verification of the serial number of the to-be-tested board and the ID of the jig is combined, so that intelligent mistake proofing of the test process and data tracing of the whole process can be realized while high reliability of test contact is guaranteed.

The invention discloses a test instrument digital access system and method for distribution network operation situation awareness. The method comprises the steps that a multi-mode access terminal is connected with a distribution network on-site multi-source heterogeneous electrical test instrument in a wired / wireless mode; a built-in protocol adaptation module calls a corresponding protocol from a preset protocol library according to the equipment model, and constructs a request packet to obtain original data; the data standardization module converts the original data into a standard data object according to a preset mapping relation; the artificial intelligence module performs multi-dimensional analysis on the standard data to generate classification and grading labels; the mobile application end receives the data and the label and generates a detection report; and the rear-end platform stores the report and the tag to detect object association historical data, implement differential storage strategies and alarm priorities according to the hierarchical tag, and perform identification and structured analysis on the unstructured report, thereby realizing standardized and automatic data access to various electrical test instruments to support accurate real-time situation awareness of the power distribution network.

An electrical testing device comprises a machine table, a pair of conveying rails and a first moving device. The machine table is provided with a bearing face, and the bearing face is configured to bear the jig combination. The conveying rail is configured to convey an object to be detected, and the conveying rail and the bearing face are spaced by a plurality of distances. The first moving device is arranged on the machine table and connected with the conveying rail, and the first moving device is configured to move the conveying rail relative to the machine table so as to change the distance. According to the electrical testing equipment, the efficiency of placing the jig combination in the electrical testing equipment can be improved, and the opportunity that the lower jig and the upper jig are placed in a misplaced manner generally can be avoided.

The present application belongs to the technical field of oil and gas drilling, and particularly relates to a multiphase fluid acoustic and electric testing device and method for drilling overflow simulation. The device is characterized in that: a multifunctional interface integrated on the upper part of the pressure-resistant reaction kettle cylinder is used to complete the injection of different component multiphase fluids and pressure setting; a heating jacket is used to complete the setting of a predetermined temperature; and continuous stirring is used to make the multiphase fluid reach a stable state with uniform composition. Under the conditions of a set temperature and pressure, electrical and acoustic signals are collected to analyze the multiphase fluid. The electrical testing component distinguishes different fluid components by monitoring the changes of resistance and dielectric constant; and the acoustic monitoring component detects the content of bubbles in the fluid through acoustic signals. The acoustic and electric cooperative monitoring can effectively distinguish different overflow types such as gas invasion, oil invasion and water invasion, and overcome the limitations of single monitoring method, thereby providing a reliable technical means for the mechanism research and practical application of downhole overflow monitoring.

The application discloses a kind of liquid cooling wire harness detection method, device, storage medium and electronic device, it is related to vehicle technical field.Therein, the method comprises: according to test requirement determines test working condition;In test working condition, obtain first temperature, wherein, first temperature includes the temperature of liquid cooling wire harness, the temperature of environmental chamber and the temperature of electrical connection point, environmental chamber is used to isolate liquid cooling wire harness with external environment, and electrical connection point is the connecting point of environmental chamber and temperature sensor;In response to first temperature greater than or equal to temperature threshold value, adjust cooling parameter, wherein, cooling parameter is used to indicate the flow rate and water temperature of cooling loop;In the preset time period after adjusting cooling parameter, obtain second temperature;According to second temperature, liquid cooling wire harness is detected.The application solves the technical problem that related art tests liquid cooling wire harness by appearance inspection or electrical test, resulting in complex method, not easy to implement, low efficiency, low accuracy, low safety.

The invention provides a dynamic deployment method for satellite batch production test equipment, and belongs to the field of spaceflight satellite electrical testing. The problem that test data are difficult to effectively associate and trace among different devices in different stages directly caused by an extensive management mode is solved. The method comprises the following steps: virtualizing dispersed test equipment into virtual equipment with a standardized interface through a network communication protocol; establishing a static data model and a dynamic data model for each test device; the modeled virtual devices are grouped according to function types to form a device library; when the test task starts, ends or is abnormal, the equipment state is monitored and alarmed; dynamically matching test equipment according to test task requirements, and distributing the equipment to the virtual test bed by adopting a scheduling algorithm; the equipment is connected and locked during testing, and the state of the equipment is set to be a connected state; and after the test is completed, releasing the equipment, setting the state of the equipment to be idle, and returning to the equipment library. The method is mainly used in the satellite batch test field.

The invention discloses a method for manufacturing a copper-block-embedded double-sided printed circuit board, which comprises the following steps of: slotting a core board, and controlling the slot precision within + / -50 microns; the core plate is placed on a marble platform, the copper blocks are placed in the groove holes, and it is ensured that the flatness of the copper blocks is within + / -12.7 micrometers; plugging the hole with vacuum resin, and pasting a high-temperature adhesive tape to fix the copper block after plugging the hole; the baking plate is vertically placed or fixed by a special jig; a UC type coating drilling tool is used for drilling, a segmented drilling mode is adopted to cope with hardness differences of different materials, and the service life of a drill bit is dynamically set and strictly controlled according to the diameter of the drilling tool, the thickness of a copper block and a laminated plate structure; hole metallization is carried out, full-board electroplating is carried out, and it is ensured that the hole copper thickness is 25-30 [mu] m; manufacturing an outer-layer circuit by adopting a high-precision pattern transfer process; and carrying out surface treatment, molding and electrical testing. According to the manufacturing method of the copper-block-embedded double-sided printed circuit board, the displacement risk of the copper block in a double-sided board structure is reduced by 15% through the measures of marble platform flatness control, vertical board baking and the like, and the problems of copper block fixing, precise drilling and interface reliability are systematically solved.

The invention relates to the technical field of transport vehicle electric appliance testing, and provides a general transport vehicle whole-vehicle electric appliance fault simulation system which comprises a fault scene configuration unit, a multi-protocol self-adaption interaction unit, an electric appliance fault simulation unit, a whole-vehicle bus closed-loop simulation unit and a fault triggering and feedback unit. The fault scene configuration unit generates a reusable fault script; the multi-protocol adaptive interaction unit realizes seamless communication adaptation; the electric device fault simulation unit accurately simulates various faults; the whole vehicle bus closed-loop simulation unit ensures that fault propagation is real; the fault triggering and feedback unit realizes fault triggering and closed-loop verification, supports visual configuration of multi-type fault scenes and generation of reusable scripts through a built-in multi-vehicle-type electric appliance topology template library, can adapt to different vehicle types, is short in matching time consumption, is high in fault simulation precision, can accurately simulate various faults, and is high in reliability and high in reliability through combination with the multi-protocol self-adaptive interaction unit. The fault simulation universality and accuracy are greatly improved, and the test cost is reduced.

The invention provides a chip failure analysis method and device, and can solve the technical problem that failure analysis cannot be carried out on an advanced process in related technologies. The method comprises the following steps: under the condition that a chip is subjected to layer removal to a contact layer, obtaining an electrical property measurement result through combined testing of body diodes of a plurality of metal oxide semiconductor (MOS) tubes and combined testing of the MOS tubes and the body diodes; and obtaining a failure analysis result of the chip according to the electrical property measurement result. Under the condition that a chip is subjected to layer removal to a contact layer (namely Via 0), whether Via 0 is abnormal or not is directly judged through electrical measurement by utilizing the body diode effect of the MOS tube. And quickly positioning at the Via 0 end by using the body diode of the MOS tube and the combination of the body diode and the MOS tube to obtain a failure analysis result of the chip. Three pins are needed at most for an abnormal electrical test, and the test time is shortened by 50%. Furthermore, carbon deposition on the surface of the sample is reduced, and introduction of analysis noise is reduced.

The application discloses a preparation method of a MEMS infrared detector wafer and relates to the technical field of semiconductor wafer preparation. The preparation method comprises the following steps: depositing a seed layer on a readout circuit wafer; performing photolithography etching treatment on the seed layer by using a photolithography etching process to reserve the seed layer in the area where a solder ring is located; forming a polyimide layer on the top surface of the readout circuit wafer and the circumferential side of the seed layer, and obtaining a MEMS structure deposited on the surface of the readout circuit wafer through solidification treatment; exposing part of the seed layer and depositing to form a solder ring by using a photolithography etching process; exposing the pad structure of the readout circuit wafer by using a photolithography etching process, and obtaining a MEMS infrared detector wafer after sequentially performing electrical testing and adhesive removal treatment. The preparation method can avoid cavity pollution caused by the deposition of the seed layer on the organic sacrificial layer, reduce the manufacturing cost, improve the process efficiency, and prevent the test pads from being polluted and corroded in the processing process.

The invention discloses an automobile air bag computer diagnosis system, relates to the field of electrical testing, and realizes full-process fine control of ECU mirror image writing through byte-level differential management, three-model parallel simulation verification and two-stage judgment strategies. A system leads out an ECU original mirror image and generates an SHA256 snapshot, a target mirror image is compared byte by byte to form a differential bitmap DIFFmap, and the differential bitmap DIFFmap is aggregated into a minimum write-in unit according to pages, so that the write-in amount and flash memory wear are reduced, and the write-in success rate is improved. The simulation verification unit parallels a plurality of models and dynamically recognizes a high-risk mirror image through weighted combination and a two-stage judgment strategy, and the write-in verification unit adopts segment-level CRC32 and global SHA256 verification and guarantees write-in atomicity and rollback traceability through two-stage submission, atomic switching and exponential backoff retry. And the cloud and local operation and maintenance module generates a compliance diagnosis report and provides authorization management, so that data security synchronization and edge cloud cooperative processing are realized. According to the scheme, the safety, the reliability and the traceability of ECU updating operation are remarkably improved.

This utility model discloses a portable testing device for generator set maintenance, belonging to the field of electrical testing technology. It includes a protective shell and a detector installed inside the shell. A through groove is formed on one outer wall of the protective shell, and a protective cover is inserted into the groove. A mounting hole is formed on the surface of the protective shell, and a fixing sleeve is fixed within the mounting hole. A fixing pin is movably connected inside the fixing sleeve. A fixing groove matching the fixing pin is formed on the surface of the protective cover. Two support seats are installed on the bottom wall of the inner cavity of the protective shell, and an automatic cable reel is placed inside the support seats. This portable testing device for generator set maintenance allows for quick assembly and disassembly of the protective cover without tools, making it more convenient to use and maintain. It can also extend the testing cable to a suitable length according to actual needs, and when not in use, the testing cable can be retracted for easy storage and portability.

Electrical testing methods, systems, and kits are capable of powering, via a first power supply, an electrical system, performing, via a first electrical device, selective detection of at least two parameters of the electrical system, and detecting, via sensor(s) of a second electrical device, presence and / or flow of a parameter from a second power supply to the electrical system to derive parasitic draw of the electrical system. Memory settings of the electrical system are preserved via the second electrical device while the parasitic draw is derived. User input(s) selecting an electrical element of the electrical system are received via a third electrical device that stores impedance data of electrical elements. The third electrical device determines voltage drop across an electrical path passing through the electrical element, which the third electrical device uses to determine, in combination with the impedance identified by the impedance data, amperage of the electrical element.

The invention relates to a magnetic type storage battery tester acquisition head quick connecting device and a working method thereof, belongs to an electrical test technology, and aims to fix an acquisition head on a storage battery pole screw through magnetic force, thereby not only improving the connecting strength of the acquisition head, but also improving the wire connection and disconnection speed, and solving the trouble of interruption in the midway of discharge. And the other end adopts a connecting female head for connecting an acquisition line. The magnetic collection head meets the requirements of large-scale, high-precision, high-efficiency, high-safety and non-destructive modern storage battery testing, and is an important innovation on traditional outdated, low-efficiency and dangerous connection modes (such as shark clips and puncture probes). A magnetic material technology, an electric contact technology and an insulation safety design are integrated. The design greatly improves the efficiency and safety of the test work, and is a typical example for promoting industry development.

The invention provides a transistor array substrate, comprising a thin film transistor, an insulating layer, a flat layer, two electrical testing pins, electrical measuring elements and pixel electrodes, wherein the thin film transistor is arranged on the transistor array substrate; the insulating layer is arranged at the lowest layer of the transistor array substrate; the flat layer is arranged above the insulating layer; the pixel electrodes are distributed above the flat layer; each pixel electrode comprises an upper pixel electrode, a lower pixel electrode and an electrode bridge for connecting the upper pixel electrode with the lower pixel electrode; the electrical measuring elements are arranged at the periphery of the transistor array substrate; the width of parts of electrical measuring elements is same as that of the electrode bridge; and the two electrical testing pins are arranged on the flat layer and connected with two ends of each electrical measuring element respectively. The transistor array substrate can confirm the electrical property of thin film transistor units accurately in time and guide the production condition quickly when any abnormity occurs.

The invention relates to the technical field of superconducting tapes, and discloses superconducting tape joint welding and testing integrated equipment, which comprises a welding assembly, a testing assembly and a control assembly, the driving pressurizing mechanism is used for applying welding pressure to the upper die and / or the lower die in the welding process; the electrical testing assembly comprises at least four pairs of lead terminals, at least two pairs of lead terminals are arranged on each of the two sides of the lower die, and the paired lead terminals are suitable for being arranged on the two faces of the strip in a clamping mode respectively; the test container mechanism comprises a lifting assembly and a container body. The driving pressurizing mechanism is arranged above the equipment, the liftable testing container mechanism is arranged below the equipment, a pressure executing piece can actively give way after welding is completed, and in-situ testing of a strip can be achieved without secondary clamping after welding; damage to the brittle superconducting layer possibly caused by strip transferring and repeated clamping in the prior art is thoroughly avoided.

The utility model discloses an electrical testing device for a heating film. Comprising a U-shaped plate, a feeding box, a discharging box, a first rotating shaft, a first servo motor, a pair of driving belt wheels and a pair of driven belt wheels, wherein the feeding box and the discharging box are fixed to the two ends of the U-shaped plate; the first rotating shaft rotates in the U-shaped plate; the first servo motor drives the first rotating shaft to rotate; the two pairs of driving belt wheels and driven belt wheels are arranged on the feeding box in a sleeving mode, the first lifting plate is lifted in the feeding box, the lifting assembly drives the lifting plate to ascend and descend, the second rotating shaft rotates in a U-shaped plate, the first servo motor drives the second rotating shaft to rotate, and one end of the overturning plate is fixedly connected with the first rotating shaft. The adsorption assembly is arranged on one side of the overturning plate; the ohmmeter is fixed on the side edge of the U-shaped plate; the air cylinder is fixed at the inner bottom of the U-shaped plate; the lifting plate II is fixed on a piston rod of the air cylinder; the utility model has the advantage of having the effect of automatically testing the heating resistance value.

The application relates to the technical field of electrical testing, and discloses a cable connection reliability testing method for a locomotive braking system, which comprises the following steps: S1, reference modeling: performing diagnostic grouping on a connection point, collecting an initial electrical fingerprint of the connection point, and establishing a health reference database; S2, excitation and monitoring: applying dynamic excitation to a cable to be tested, synchronously collecting a transient resistance signal in real time, and calculating a resistance fluctuation spectrum; S3, fault diagnosis: performing correlation analysis on the resistance fluctuation spectrum and dynamic excitation characteristics, combining the reference database, and diagnosing potential connection defects; and S4, evaluation and reporting: performing quantitative evaluation on the health state of the connection point according to the diagnosis result, and finally generating a comprehensive diagnosis report. The application adopts electrical response monitoring and health index evaluation technology under dynamic excitation, accurately identifies intermittent defects, and realizes quantitative evaluation and prediction of the cable connection reliability.

This utility model discloses a comprehensive electrical testing instrument, including a clamp meter body. The clamp meter body includes a grip area and a testing area, with the wire to be tested located between the testing areas. A protective mechanism is installed in the testing area, including a dust cover. A first fixing rod is installed at one end of the dust cover, and a first dust-removing cotton is installed on the outside of the first fixing rod. A detachable component for replacing the first dust-removing cotton is installed on the first fixing rod. The detachable component includes a second fixing rod for installing the first dust-removing cotton, and the second fixing rod is installed on the first fixing rod. Compared with the prior art, this comprehensive electrical testing instrument can remove impurities and dust from the contact point between the clamp meter and the wire to be tested, thus avoiding poor contact between the clamp meter and the wire and affecting measurement accuracy to a certain extent. It can also reduce wear on the clamp meter and extend its service life.

The application discloses a large-section conductor alternating current resistance automatic testing system and method, and relates to the electrical testing field.The system comprises a computer, an FPGA / real-time system, a D / A converter 1, a D / A converter 2, a D / A converter 3, an A / D converter, a voltage-controlled current source, electrodes, a GIL conductive pipe sample, a through-type high-precision current transformer, a high-precision resistor R, a lock-in amplifier and a coupling transformer with a load Z.The application eliminates the mutual inductance between a current loop and a voltage testing loop and the influence of the self-inductance of a sample, generates a 90-degree leading current voltage based on an equivalent circuit model through the FPGA and the D / A converter, and is used for compensating the voltage on the self-inductance of the sample and the mutual inductance in the voltage testing loop, reducing the phase angle between the voltage on the measured conductor and the exciting current, solving the precision problem of the large-section conductor alternating current resistance testing, and realizing the accurate and automatic measurement of the large-section conductor alternating current resistance.

The invention relates to a medium-voltage electrical equipment detection method and device, computer equipment, a computer readable storage medium and a computer program product. The method comprises the following steps: acquiring a to-be-detected image; the to-be-detected image is shot after the robot moves to a target position; the to-be-detected image comprises medium-voltage electrical equipment; identifying the type of the medium-voltage electrical equipment in the to-be-detected image, and determining a wiring mode and a wiring position according to the type of the medium-voltage electrical equipment; and controlling a gripper to move to the wiring position, and performing electrical detection and mechanical detection on the medium-voltage electrical equipment according to the wiring mode to obtain detection parameters of the medium-voltage electrical equipment. By adopting the method, the safety of electrical detection can be improved.

This utility model discloses an auxiliary device for electrical testing. The device includes: a housing for accommodating a testing instrument; a wire inlet hole on a first side of the housing for inserting a wire to connect the electrical device under test to the testing instrument; and a clamping mechanism installed in the housing for clamping the wire. This auxiliary device, by using a clamping mechanism to hold and fix the connecting wire between the testing instrument and the electrical device under test, prevents the wire from loosening due to external forces, vibrations, or other factors, thus avoiding intermittent electrical connection problems. This ensures the reliability of the electrical connection, enabling the acquisition of stable and reliable test data and accurate assessment of the performance of the electrical device under test.