Fuse characteristic comprehensive test system based on virtual reality technology

Abstract

The invention relates to the technical field of fuses, in particular to a fuse characteristic comprehensive test system based on a virtual reality technology, which comprises a map construction module used for determining the characteristics of a plurality of fuses to be tested and test parameter sets corresponding to the characteristics of the fuses, constructing a switching map based on the characteristics of the fuses and the test parameter sets, wherein the switching atlas comprises sub-atlas respectively corresponding to the characteristics of a plurality of fuses connected through the regulation and control channel and the regulation and control channel; the characteristic determination module is used for acquiring test parameters corresponding to the characteristics of the fuse which is currently tested, determining next target test characteristics according to the switching atlas, and regulating and controlling the test parameters corresponding to the target test characteristics based on the regulation and control points corresponding to the regulation and control channels to obtain target test parameters; the characteristic test module is used for testing the target test characteristics according to the target test parameters to obtain a test result; the number of changes of test parameters can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fuses, in particular to a fuse characteristic comprehensive test system based on virtual reality technology. BACKGROUND

[0002] As a key circuit protection element, the performance reliability of the fuse is directly related to the safe and stable operation of the entire power system, therefore, the comprehensive test of the fuse on the ampere-second characteristic, I2t characteristic, breaking capacity and other characteristics is a necessary link to verify its performance and ensure its quality. Therefore, it is crucial to comprehensively test the characteristics of the fuse. At present, the fuse characteristic test mainly relies on the traditional physical test bench, and when a comprehensive test evaluation is carried out, the selection and switching of the test sequence completely depend on manual decision and operation. The operator cannot quickly and accurately determine a "next best test" that can maximize the use of existing parameter configurations, resulting in a large number of repeated settings and adjustments of parameters with each switching, thereby affecting the entire comprehensive test cycle and reducing the test efficiency of the fuse characteristics.

[0003] Therefore, we propose a fuse characteristic comprehensive test system based on virtual reality technology to solve the above problems. SUMMARY

[0004] The purpose of the present application is to provide a fuse characteristic comprehensive test system based on virtual reality technology to solve the problems raised in the background.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a fuse characteristic comprehensive test system based on virtual reality technology, comprising:

[0006] A graph construction module is used to determine a plurality of fuse characteristics to be tested and a plurality of test parameter sets corresponding to each fuse characteristic, and a switching graph is constructed based on the plurality of fuse characteristics and the test parameter sets, wherein the switching graph comprises a plurality of sub-graphs corresponding to the plurality of fuse characteristics connected by a regulation channel.

[0007] A characteristic determination module is used to obtain the test parameters corresponding to the fuse characteristic currently being tested, determine the target test characteristic of the next time according to the switching graph, and regulate the test parameters corresponding to the target test characteristic based on the regulation points corresponding to the regulation channel to obtain the target test parameters.

[0008] A characteristic test module is used to test the target test characteristic according to the target test parameters to obtain the test results.

[0009] A virtual interaction module is used to display the switching graph, the regulation process of the test parameters and the test results in a three-dimensional visual form.

[0010] Preferably, the step of determining the plurality of fuse characteristics to be tested and the test parameter set corresponding to each fuse characteristic is based on constructing a switching atlas of the plurality of fuse characteristics and the test parameter set, wherein the switching atlas comprises a main atlas, a plurality of sub-atlases corresponding to the plurality of fuse characteristics, and switching information, and the step of constructing the switching atlas comprises:

[0011] corresponding to each test parameter type, a global type point set is created for all test parameter types involved in the plurality of fuse characteristics, wherein each type point corresponds to a test parameter type;

[0012] Based on the plurality of fuse characteristics, a plurality of sub-atlases are obtained, wherein a separate sub-atlas is constructed for each of the characteristic points;

[0013] Based on the same test parameter type, the plurality of sub-atlases are connected to obtain a switching atlas.

[0014] Preferably, the step of constructing a separate sub-atlas for each of the characteristic points comprises:

[0015] connecting the current characteristic point with each type point in the type point set;

[0016] configuring a plurality of control points for each characteristic point, obtaining the type point where the test parameter type corresponding to the current characteristic point is located, and releasing control points to each type point.

[0017] Preferably, the step of obtaining the test parameter corresponding to the fuse characteristic currently being tested, determining the target test characteristic and the corresponding target test parameter for the next test according to the switching atlas comprises:

[0018] obtaining a first type point set corresponding to a first fuse characteristic currently being tested;

[0019] identifying the fuse characteristic corresponding to the characteristic point with the highest number of type point overlaps with the first type point set as the target test characteristic for the next test.

[0020] Preferably, the step of controlling the target test parameter corresponding to the target test characteristic based on the control point corresponding to the control channel comprises:

[0021] obtaining the control point of the type point where the test parameter type corresponding to the current test characteristic is located and the control point of the type point where the target test parameter corresponding to the target test characteristic overlaps with the type point;

[0022] For the coincident type point, a regulation channel between two regulation points is established, and based on the regulation channel, the regulation point corresponding to the coincident type point on the current test characteristic is moved to the regulation point corresponding to the coincident type point on the target test characteristic, and a moving speed of the regulation point in the regulation channel is determined according to the requirement of the target test parameter;

[0023] When the regulation point migrates to the corresponding type point in the target test characteristic, the parameter value carried by the regulation point is updated to the target test characteristic, and the first test parameter is obtained;

[0024] The second test parameter is determined, and the target test parameter is obtained by synthesizing the first test parameter and the second test parameter.

[0025] Preferably, the step of determining the moving speed of the regulation point in the regulation channel according to the requirement of the target test parameter comprises:

[0026] Based on the target test characteristic, a target test parameter set containing a numerical sequence that needs to be dynamically combined at different time points is identified, wherein a first numerical sequence of a first parameter type needs to be paired with a second numerical sequence of a second parameter type according to a predetermined time rule;

[0027] A plurality of first regulation points carrying the first numerical sequence are generated for the first parameter type, and a plurality of second regulation points carrying the second numerical sequence are generated for the second parameter type;

[0028] The first regulation points and the second regulation points are controlled to enter their respective corresponding regulation channels and migrate to the target type point;

[0029] Based on the predetermined time rule, the migration speed of a specific regulation point in at least one regulation point sequence is dynamically adjusted.

[0030] Preferably, the step of determining the second test parameter comprises:

[0031] The type point corresponding to the distribution of the target test characteristic and the current test characteristic is obtained as a non-coincident type point, a plurality of first regulation points representing the test parameter type corresponding to the current test characteristic are distributed on the corresponding type point in the main graph, and a first parameter type distribution is formed;

[0032] The first regulation points irrelevant to the target test characteristic are recycled and disappear from the main graph;

[0033] The target test characteristic releases the second regulation point to the type point of the corresponding test parameter type, so that the second regulation point is distributed on the type point corresponding to the target test characteristic, and a second distribution state is formed;

[0034] When the second regulation point completes distribution, a second parameter type distribution corresponding to the target test characteristic is formed in the main atlas, and a test parameter on a type point corresponding to the second parameter type distribution is taken as a second test parameter.

[0035] Preferably, the step of testing the target test characteristic according to the target test parameter to obtain a test result comprises:

[0036] An instruction of starting a test is sent to a virtual test model corresponding to the target test characteristic.

[0037] In the virtual reality environment, a characteristic test process of the fuse under the target test parameter is simulated and visually displayed in real time.

[0038] In the test process, the physical test equipment is synchronously driven to apply the test parameter consistent with the virtual test to the real fuse.

[0039] Real test data from the physical test equipment and simulated test data in the virtual test model are collected and recorded.

[0040] The real test data and the simulated test data are analyzed to generate a final test result report.

[0041] Compared with the prior art, the present application has the following beneficial effects:

[0042] According to the parameter construction switching atlas, the number of coincident type points is determined according to the switching atlas, the characteristic of the next test is automatically determined as the target test characteristic according to the number of coincident type points, the coincident type points in the target test characteristic corresponding to the type points corresponding to the current test characteristic are determined, and a regulation channel is established between the type points corresponding to the target test characteristic and the type points corresponding to the current test characteristic, the current test parameter is regulated into the target test parameter according to the regulation channel, the target characteristic is tested according to the target test parameter, the parameter variation is reduced, and the comprehensive test efficiency of the fuse characteristic is improved. BRIEF DESCRIPTION OF DRAWINGS

[0043] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0044] Figure 1 The system structure diagram of the present application. DETAILED DESCRIPTION

[0045] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts are within the scope of the present application.

[0046] Embodiments

[0047] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts are within the scope of the present application. Figure 1 The present application provides a kind of based on virtual reality technology's fuse characteristic comprehensive test system technical scheme: a kind of based on virtual reality technology's fuse characteristic comprehensive test system, comprising the following steps:

[0048] Atlas construction module is used to determine the characteristics of a plurality of to be tested fuses and the test parameter set corresponding to each fuse characteristic, and a switching atlas is constructed based on a plurality of fuse characteristics and test parameter sets, wherein the switching atlas includes a plurality of fuse characteristics corresponding to the sub-atlas connected by a control channel and the control channel.

[0049] The steps of determining a plurality of fuse characteristics to be tested and the test parameter set corresponding to each fuse characteristic, and constructing a switching atlas based on a plurality of fuse characteristics and test parameter sets, wherein the switching atlas includes a main atlas, a plurality of fuse characteristics corresponding to a sub-atlas, and switching information, include: setting a type point corresponding to the test parameter type, creating a global type point set for all test parameter types involved by the fuse characteristics; wherein each type point corresponds to a test parameter type; obtaining a plurality of sub-atlases based on a plurality of fuse characteristics, wherein an independent sub-atlas is constructed for each said characteristic point; connecting a plurality of said sub-atlases based on the same test parameter type to obtain a switching atlas;

[0050] The fuse characteristics include but are not limited to ampere-second characteristics, I2t characteristics, breaking capacity characteristics, power consumption characteristics and power factor characteristics; the test parameter set includes current values, voltage values, time parameters, circuit configuration parameters and environmental simulation parameters corresponding to the fuse characteristics;

[0051] The step of constructing an independent sub-atlas for each said characteristic point includes: connecting the current characteristic point with each type point in the type point set; configuring a plurality of control points for each characteristic point, obtaining the type point where the test parameter type corresponding to the current characteristic point is located, and releasing control points to each type point;

[0052] Specifically, multiple sub-maps are set up, each containing a characteristic point and multiple type points. Each characteristic point corresponds to a characteristic type. Multiple sub-maps are connected based on the same characteristic type to form a main map. Each characteristic point stores multiple control points. The corresponding control points are released to the type points where the experimental parameters of the corresponding characteristic type are located. Temporary control channels are established between the same type points corresponding to different characteristic types based on the control points. These control channels are only temporarily established between overlapping type points between the current target experimental parameter and the next target experimental parameter. The next target experimental parameter is determined based on the number of overlapping type points. The target characteristic for the next experiment is determined based on the characteristic point corresponding to the type point with the highest number of overlaps with the type points of the experimental parameters corresponding to the current characteristic type. Parameter control is applied to the next sub-map based on the control points in the temporary channels. For overlapping type points, the parameter values ​​corresponding to the overlapping type points in the sub-map corresponding to the target characteristic are adjusted through the control points, controlling the movement speed of the control points.

[0053] It should be noted that a type point represents a specific type of test parameter, storing the current or target value of that type of parameter; for example, a current type point is responsible for storing and retrieving all current-related values, a voltage type point is responsible for storing and retrieving all voltage-related values, and there are also time type points, power factor type points, etc.; a characteristic point represents the characteristic type of a fuse that needs to undergo a characteristic test, representing the characteristic type corresponding to that test parameter, storing the complete set of test parameters corresponding to that characteristic (i.e., a set of specific values, such as {current: 100A, time: 2s}), and can manage control points. Control points carry parameter values, for example, an ampere-second characteristic point is linked to a current type point and a time type point; a sub-graph is a local network consisting of a characteristic point and multiple type points directly connected to it. It is an independent and fully functional test unit used to describe the types of parameters required to complete a specific test, such as the ampere-second characteristic sub-map: it contains ampere-second characteristic points connected to current type points and time type points respectively; the main map is a global network formed by connecting all sub-maps through points of the same type; it can represent the relationship between all test characteristics corresponding to the fuse, thereby intelligently switching the test order of the fuse characteristics to be tested; and it merges points of the same type in all sub-maps into a global node.For example, all current type points in the sub-plots are merged into a single current type point in the main plot. The main plot will show that the ampere-second characteristic point and the breaking capacity characteristic point are associated through the shared current type point. The control point, a movable intelligent data carrier, carries a specific parameter value. Triggered from the source characteristic point, it moves along the channel (here, the channel is the connection between the type point and the characteristic point, used to distribute the control point to the type point corresponding to the test parameter type of the test characteristic) and writes its value to the target type point. This target type point can be the type point corresponding to the test parameter of the current characteristic point, or it can be a target type point among overlapping type points used to receive the test parameter corresponding to the current test characteristic through the control channel. This target type point belongs to the type point corresponding to the test parameter of the next characteristic test. The movement speed of the control point can be dynamically controlled, so that when the same test parameter value needs to be reused, it does not need to be changed again by transmitting the control point, reducing the number of changes and improving test efficiency. The control channel is a temporary channel connecting the overlapping type points between the current test characteristic and the next test characteristic to be tested. It can provide a movement path for the control point, ensure data flow, and ensure that the data is of the same type as the next test parameter. It can directly call the data of the same type as the current test parameter. After the test characteristic to be tested is completed, its corresponding test parameter is used as the current test parameter. Then, it continues to look for other test characteristics with the highest number of overlapping type points with the current test parameter as the target test characteristic for the subsequent test. In this way, all characteristics of the fuse are tested in sequence. The number of overlapping type points is the number of the same type points between the set of type points connected to the current test characteristic and the set of type points connected to another test characteristic. The overlap of parameter type points is calculated. The higher the number, the more parameters are shared between the two tests, the fewer parameters need to be changed when switching, and the higher the switching efficiency. Assume that the current characteristic (ampere-second) is connected to the current type point and the time type point, and the candidate characteristic A (I). 2t) Connect current type points, time type points, and energy type points. Connect candidate characteristic B (breaking capacity) to voltage type points and current type points. The number of overlapping type points between the current characteristic and candidate characteristic A is 2, and the number of overlapping type points between the current characteristic and candidate characteristic B is 1. Select candidate characteristic A with the higher number of overlapping type points as the next target test characteristic. Construct a sub-map for each characteristic and then merge them into a main map. When switching is required, calculate the number of overlapping type points between the current characteristic and all other characteristics, and select the one with the highest number as the target characteristic. Release control points from the current characteristic point. These control points enter the corresponding control channels. Dynamically establish temporary control channels to visualize the process. By controlling the movement speed of the control points, accurately transfer parameter values ​​to the type points to complete the parameter configuration of the target sub-map. After the parameter configuration is completed, the target characteristic can be tested.

[0054] The characteristic determination module is used to obtain the test parameters corresponding to the characteristics of the fuse currently being tested, determine the target test characteristics for the next test based on the switching pattern, and adjust the test parameters corresponding to the target test characteristics based on the control points corresponding to the control channels to obtain the target test parameters.

[0055] The steps of obtaining the test parameters corresponding to the current fuse characteristic under test and determining the target test characteristic and corresponding target test parameters for the next test based on the switching pattern include: obtaining the first type point set corresponding to the first fuse characteristic under test; identifying the fuse characteristic corresponding to the characteristic point with the highest number of type points overlapping with the first type point set as the target test characteristic for the next test.

[0056] The steps for obtaining target test parameters by regulating the test parameters corresponding to the target test characteristic based on the regulation points corresponding to the regulation channels include: obtaining the regulation points of the type points of the test parameter types corresponding to the current test characteristic and the regulation points of the target test parameter types corresponding to the target test characteristic that overlap with the type points; for overlapping type points, establishing a regulation channel between the two regulation points, the regulation channel is configured to allow the regulation points carrying parameter values ​​to migrate between related characteristic points, moving the regulation points corresponding to the overlapping type points on the current test characteristic to the regulation points corresponding to the overlapping type points on the target test characteristic based on the regulation channel, and determining the movement speed of the regulation points in the regulation channel according to the requirements of the target test parameters; when the regulation point migrates to the corresponding type point in the target test characteristic, updating the parameter values ​​carried by the regulation point to the target test characteristic to obtain the first test parameter; determining the second test parameter, and combining the first test parameter and the second test parameter to obtain the target test parameter;

[0057] The steps for determining the second experimental parameter include: acquiring the type points corresponding to the target experimental characteristic and the current experimental characteristic distribution as non-overlapping type points; distributing multiple first control points representing the experimental parameter types corresponding to the current experimental characteristic onto the corresponding type points in the main graph to form a first parameter type distribution; recovering the first control points unrelated to the target experimental characteristic and making them disappear from the main graph; releasing the second control points from the target experimental characteristic to the type points corresponding to the experimental parameter types, making them distributed onto the type points corresponding to the target experimental characteristic to form a second distribution state; after the second control points have been distributed, a second parameter type distribution corresponding to the target experimental characteristic is formed in the main graph, and the experimental parameters on the type points corresponding to the second parameter type distribution are taken as the second experimental parameters.

[0058] In a virtual reality environment, the operator can observe the disappearance of the first control point and the appearance and migration process of the second control point, thereby intuitively understanding the switching state of parameter types. The first distribution state and the second distribution state define the set of parameter types that are ready when the previous characteristic and the target characteristic are tested, respectively. The final result of the control point distribution update process is to change the set of type points in the active state in the main graph from the set representing the previous characteristic to the set representing the target characteristic. The evolution process from the first distribution state to the second distribution state completes the switching of the test parameter type from the previous characteristic to the target characteristic. The state switching is achieved by changing the distribution of data objects, reducing the number of changes in test parameters.

[0059] Specifically, different types of virtual control points migrate and take effect in parallel on their respective independent control channels without blocking each other; the status of all control points is monitored in real time, and the target experimental parameter set is only considered to be fully ready when all control points with necessary parameters have successfully taken effect; the status of virtual control points during migration can be intervened externally, and the operator can pause, cancel, or modify the migration task of a specific control point and its parameter values ​​through the virtual reality interactive device; when an abnormal migration speed of a control point is detected (slow or stopped), the control point and its information panel are highlighted, and a visual or auditory warning signal is issued to the user.

[0060] The steps for determining the movement speed of control points in the control channel according to the requirements of target experimental parameters include: based on the target experimental characteristics, identifying that the target experimental parameter set contains numerical sequences that need to be dynamically combined at different time points; wherein, a first numerical sequence of a first parameter type needs to be paired with a second numerical sequence of a second parameter type according to a predetermined time rule; generating multiple first control points carrying the first numerical sequence for the first parameter type, and generating multiple second control points carrying the second numerical sequence for the second parameter type; controlling the first control points and second control points to enter their respective corresponding control channels and migrate towards the target type point; and dynamically adjusting the migration speed of specific control points in at least one control point sequence based on the predetermined time rule to ensure that when they arrive at their respective target type points, their numerical combination meets the requirements of the target experimental characteristics at the corresponding time.

[0061] Specifically, dynamically adjusting the migration speed includes: identifying specific values ​​of a first parameter type that need to be paired with multiple different values ​​of a second parameter type; reducing the migration speed of the first control point carrying the specific value to extend its effective residence time in the target type point; ensuring that multiple second control points of the second parameter type can arrive at the target type point sequentially within the effective residence time of the specific value, and form parameter combinations that meet the timing requirements with the specific value; providing special visual markers for control points whose migration speed has been deliberately reduced in the visualization interface, and displaying their extended expected arrival time and the purpose of the delay; the predetermined time rule is a composite stress condition that varies with time and is applied to the fuse as required by the target test characteristics; and achieving precise timing coordination of different parameters by accurately controlling the movement speed of the control points; for example, the goal is to first activate the parameter combination (B=1, C=4) in the test, and then activate the combination (B=1, C=5). Please note that the value of parameter B (1) needs to remain constant for a certain period to coordinate with the two different values ​​of parameter C. Currently, the value of parameter B is 2, and the value of parameter C is 6. Three virtual task packages (i.e., control points) are generated: Task package B1 sets parameter B to 1; Task package C4 sets parameter C to 4; and Task package C5 sets parameter C to 5. These three task packages are placed into their respective control channels and begin moving. At this point, the intelligent scheduling center begins its work. After analyzing the task requirements, it discovers a key point: the value 1 carried by task package B1 needs to coordinate with both task packages C4 and C5. If all task packages move at normal speed, B=1 and C=5 might arrive almost simultaneously, but C=4 might arrive much earlier, preventing the formation of the (B=1, C=4) combination. To solve this problem, the scheduling center makes a decision: slow down task package B1! Simultaneously, allow task packages C4 and C5 to move at normal or faster speeds. At moment one: Task package C4 arrives at the destination (type C point) first and sets parameter C to 4. At this point, task package B1 is still en route, and the B parameter may still be the old value of 2. This combination (B=2, C=4) may not be the target combination, and the system is in a ready state. Moment two: Task package B1 slowly arrives at the destination (B type point), successfully updating the B parameter to 1. At this point, the combination (B=1, C=4) is officially formed. Moment three: Task package C5 subsequently arrives at the destination, updating the C parameter to 5. Thus, the combination (B=1, C=5) is also successfully formed. By deliberately slowing down the speed of a key task package (B1), the effective time of the value 1 on the B parameter is extended, thereby creating a time window that allows both values ​​of the C parameter (4 and 5) to be successfully paired with it. The speed difference of spatial movement is used to exchange for the matching accuracy on the time axis.Controlling the transmission speed of the control point based on the usage of the target test parameters can reduce the number of changes in parameters corresponding to overlapping parameter types in the target test parameters, thereby improving the testing efficiency of fuse characteristics.

[0062] The characteristic testing module performs tests on the target characteristics based on the target test parameters and obtains the test results;

[0063] The steps for conducting tests on target test characteristics based on target test parameters and obtaining test results include: issuing a test start command to the virtual test model corresponding to the target test characteristics; simulating and visualizing the characteristic test process of the fuse under the target test parameters in real time in a virtual reality environment; synchronously driving physical test equipment during the test to apply test parameters consistent with those in the virtual test to the real fuse; collecting and recording real test data from the physical test equipment, and simultaneously recording the simulated test data in the virtual test model; analyzing the real test data and the simulated test data to generate a final test result report.

[0064] Specifically, the heating, arc generation, and extinguishing process inside the fuse is displayed in a three-dimensional dynamic form; real-time changes in current and voltage are synchronously displayed in the virtual scene in the form of dynamic waveform diagrams; physical field data such as temperature distribution and stress changes are highlighted on the virtual fuse model; synchronous driving of the physical test equipment is achieved through an Internet of Things (IoT) module deployed on the physical equipment; the virtual test model sends control commands to the physical equipment through the IoT module and receives its status feedback, forming a closed-loop control.

[0065] The analysis of real and simulated experimental data includes: time-series alignment and comparison of real and simulated experimental data; calculation of simulation accuracy and error of the digital twin model based on the comparison results; simultaneous presentation of real data curves, simulated data curves, and error analysis in the experimental results report; and feeding back and updating the switching graph with the set of experimental parameters and experimental results corresponding to the target experimental characteristics obtained in this experiment as a new data node to optimize subsequent characteristic switching decisions.

[0066] The system also includes a virtual interaction module, which is used to display the switching spectrum, the adjustment process of experimental parameters, and the experimental results in a three-dimensional visualization format;

[0067] The steps for displaying the switching spectrum, test parameter control process, and test results in a 3D visualization format include: constructing an immersive virtual test environment in a virtual reality space based on the physical parameters and test standards of the fuse, including a 3D fuse model, test circuit, and virtual instruments; receiving and recognizing user interaction commands in the virtual test environment, the interaction commands including at least connecting the virtual test circuit, starting and stopping the virtual power supply, and controlling the test parameters; based on the target test parameters controlled by the user, calculating and simulating the electrical characteristics and physical changes of the fuse under overcurrent or short-circuit conditions in real time through a built-in fuse mathematical simulation model, the physical changes including at least the heating, melting, arc generation, and extinguishing of the fusible element; rendering and presenting the calculation results of the physical characteristic simulation steps in real time in the virtual test environment, dynamically displaying the state changes of the fuse in a visual format, including temperature rise distribution, arc morphology, and breaking results; recording and storing key electrical and time parameters during the simulation process, and automatically generating characteristic curves and test reports that meet the test standards;

[0068] Specifically, in the virtual test environment construction step, the three-dimensional fuse model is a detachable hierarchical structure model, allowing users to disassemble it interactively to observe its internal structure. In the physical characteristic simulation step, the fuse mathematical simulation model is a multi-physics coupling model, which comprehensively calculates electrical, thermal, and fluid dynamic effects to accurately simulate the dynamic characteristics and energy dissipation process of the electric arc. In the test process visualization step, different colors, particle effects, and light effects are used to characterize the temperature of different parts of the fuse, the plasma state of the electric arc, and the result of successful or unsuccessful breaking. The simulated characteristic curves are automatically compared with a pre-stored library of qualified fuse standard characteristic curves, and a qualification judgment conclusion is given based on the comparison results.

[0069] In a virtual reality environment, the test parameters for the next test characteristic are adjusted based on the test parameters of the current test characteristic. The adjustment instructions for the test parameters are specified as the release, migration, and activation process of one or more virtual control points. The switching map is displayed in the virtual test environment as a three-dimensional network, highlighting the current test characteristic node, historical test paths, and the recommended next target test characteristic node. Responding to the operator's virtual interaction actions, the test parameters are visually adjusted and confirmed in the virtual reality environment. Before applying the target test parameters, the test process of the target test characteristic is simulated and rehearsed. The migration speed of the control points to the corresponding type points is adjustable. The migration speed of the control points is controlled through a virtual reality interactive device to achieve simulated observation and intervention of the test parameter switching process.

[0070] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0071] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A virtual reality technology-based comprehensive test system for fuse characteristics, characterized in that, The method comprises the following steps: a graph construction module is configured to determine a plurality of fuse characteristics to be tested and a plurality of test parameter sets corresponding to the fuse characteristics, and construct a switching graph based on the fuse characteristics and the test parameter sets, wherein the switching graph comprises a plurality of sub-graphs corresponding to the fuse characteristics and a plurality of control channels; a characteristic determination module is configured to obtain a test parameter corresponding to a fuse characteristic currently being tested, determine a target test characteristic for the next test based on the switching graph, and control the test parameter corresponding to the target test characteristic based on a control point corresponding to the control channel to obtain a target test parameter; a characteristic test module is configured to test the target test characteristic based on the target test parameter to obtain a test result; a virtual interaction module is configured to display the switching graph, the control process of the test parameter, and the test result in a three-dimensional visual form.

2. The comprehensive test system for fuse characteristics based on virtual reality technology according to claim 1, characterized in that: The method comprises the following steps: a type point corresponding to a test parameter type is set, a global type point set is created for all test parameter types related to the fuse characteristics, wherein each type point corresponds to a test parameter type; a plurality of sub-graphs are obtained based on a plurality of fuse characteristics, wherein an independent sub-graph is constructed for each characteristic point; the plurality of sub-graphs are connected based on the same test parameter type to obtain a switching graph.

3. The comprehensive test system for fuse characteristics based on virtual reality technology according to claim 2, characterized in that: The step of constructing an independent sub-graph for each characteristic point comprises the following steps: connecting the current characteristic point with each type point in the type point set; configuring a plurality of control points for each characteristic point, obtaining a type point corresponding to a test parameter type of the current characteristic point, and releasing a control point to each type point.

4. The comprehensive test system for fuse characteristics based on virtual reality technology according to claim 1, characterized in that: The steps of obtaining a test parameter corresponding to a fuse characteristic currently being tested, determining a target test characteristic for the next test based on the switching graph, and obtaining a target test parameter corresponding to the target test characteristic comprise the following steps: obtaining a first type point set corresponding to a first fuse characteristic currently being tested; identifying a fuse characteristic corresponding to a characteristic point with the highest number of type point overlaps with the first type point set as a target test characteristic for the next test.

5. The comprehensive test system for fuse characteristics based on virtual reality technology according to claim 1, characterized in that: The step of controlling the test parameter corresponding to the target test characteristic based on the control point corresponding to the control channel to obtain the target test parameter comprises the following steps: obtaining a control point of a type point corresponding to a test parameter type of the current test characteristic and a control point of a type point corresponding to a target test parameter of the target test characteristic overlapping with the type point; for the overlapping type points, establishing a control channel between the two control points, moving the control point corresponding to the overlapping type point of the current test characteristic to the control point corresponding to the overlapping type point of the target test characteristic based on the control channel, and determining a moving speed of the control point in the control channel according to a requirement of the target test parameter; when the control point migrates to the corresponding type point in the target test characteristic, updating a parameter value carried by the control point to the target test characteristic to obtain a first test parameter. determining a second test parameter, and synthesizing the first test parameter and the second test parameter to obtain a target test parameter.

6. The comprehensive test system for fuse characteristics based on virtual reality technology according to claim 5, characterized in that: The step of formulating a control point to regulate the movement speed of the control channel according to the requirement of the corresponding target test parameter comprises: Based on the target test characteristic, it is identified that the target test parameter set thereof contains a numerical sequence that needs to be dynamically combined at different time points, wherein a first numerical sequence of a first parameter type needs to be paired with a second numerical sequence of a second parameter type according to a predetermined time rule; a plurality of first control points carrying the first numerical sequence are generated for the first parameter type, and a plurality of second control points carrying the second numerical sequence are generated for the second parameter type; The first control point and the second control point enter their respective corresponding control channels and migrate to the target type point; Based on the predetermined time rule, the migration speed of a specific control point in at least one control point sequence is dynamically adjusted.

7. The comprehensive test system for fuse characteristics based on virtual reality technology according to claim 5, characterized in that: The step of determining a second test parameter comprises: Obtain the type point corresponding to the target test characteristic and the current test characteristic distribution as a non-coincidence type point, distribute a plurality of first control points representing the test parameter type corresponding to the current test characteristic on the corresponding type point in the main graph to form a first parameter type distribution; Recycle the first control points irrelevant to the target test characteristic to make them disappear from the main graph; The target test characteristic releases a second control point to the type point of the corresponding test parameter type, and the second control point is distributed to the type point corresponding to the target test characteristic to form a second distribution state; When the distribution of the second control point is completed, a second parameter type distribution corresponding to the target test characteristic is formed in the main graph, and the test parameters on the type points corresponding to the second parameter type distribution are taken as the second test parameters. 8.The comprehensive test system for fuse characteristics based on virtual reality technology according to claim 1, characterized in that: The step of performing a test on the target test characteristic according to the target test parameter to obtain a test result comprises: issuing a test start instruction to the virtual test model corresponding to the target test characteristic; In the virtual reality environment, the characteristic test process of the fuse under the target test parameter is simulated and visualized in real time; In the test process, the physical test equipment is synchronously driven to apply the same test parameters to the real fuse as the virtual test; Collect and record the real test data from the physical test equipment, and record the simulation test data in the virtual test model at the same time; Analyze the real test data and the simulation test data to generate a final test result report. Analyze the real test data and the simulation test data to generate a final test result report.

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