Power plant equipment inspection method based on AR equipment

Abstract

The invention provides a power plant equipment inspection method based on AR equipment, and relates to the technical field of equipment inspection, and the method comprises the steps: periodically obtaining the historical fault frequency and historical inspection frequency of each piece of equipment in an equipment information database through a background system; the background system sorts the devices based on the historical fault times and the historical inspection times, screens the first N devices as inspection devices, and constructs an inspection device set; the background system generates an inspection task based on the inspection equipment set and sends the inspection task to AR equipment corresponding to corresponding inspection personnel, and the inspection task comprises inspection items and inspection steps; when the AR equipment receives the inspection instruction, the AR equipment displays the inspection items and the inspection steps corresponding to the inspection equipment, comprehensively considers the historical fault frequency and the historical inspection frequency of the equipment, and reasonably screens out the equipment which needs to be subjected to priority inspection, so that the inspection efficiency and the fault response speed are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment inspection, and particularly to a method for inspecting power plant equipment based on AR devices. Background Art

[0002] Currently, when inspecting power plant equipment, restricted by the understanding of inspection personnel on regulations and systems, the mastery of operation standards, and their own experience, the operation safety and quality cannot be fundamentally guaranteed. Since the operation instruction manual cannot fully carry all the requirements for operation risk control, and personnel experience requires an accumulation process, it is impossible to effectively remind or stop during the operation process of inspection personnel in a timely manner. In the prior art, when inspecting through AR devices, the inspection items and inspection steps can be displayed through AR devices, which can effectively improve the inspection quality. However, there are many devices in a power plant, and it takes a lot of time to inspect all of them through AR devices. How to reasonably generate inspection tasks has become a technical problem to be solved urgently. Summary of the Invention

[0003] In view of the above problems, the present invention provides a method for inspecting power plant equipment based on AR devices, which can comprehensively consider the historical failure times and historical inspection times of equipment, reasonably screen out the equipment that needs to be inspected preferentially, and improve the inspection efficiency and fault response speed.

[0004] An embodiment of the present invention provides a method for inspecting power plant equipment based on AR devices, including: The background system periodically obtains the historical failure times and historical inspection times of each device in the device information database; Based on the historical failure times and the historical inspection times, the background system sorts each device, and screens the top N devices as inspection devices to construct an inspection device set; Based on the inspection device set, the background system generates inspection tasks and sends the inspection tasks to the corresponding AR devices of the corresponding inspection personnel, where the inspection tasks include inspection items and inspection steps; When the AR device receives an inspection instruction, the AR device displays the inspection items and inspection steps corresponding to the inspection device.

[0005] In some embodiments, based on the historical failure times and the historical inspection times, the background system sorts each device, and screens the top N devices as inspection devices to construct an inspection device set, including: The background system performs normalization processing on the historical failure times and the historical inspection times; The normalized historical failure times and historical inspection times are input into a pre-constructed device scoring model to obtain the evaluation scores of each device; Sort each device in descending order based on the evaluation score, and select the top N devices as the devices to be inspected, thereby constructing a set of devices to be inspected.

[0006] In some embodiments, the device scoring model is: ; In the formula, is the evaluation score, , are the weight coefficients corresponding to the historical failure times and historical inspection times respectively, is the historical failure times of the device to be inspected after normalization processing, is the historical inspection times of the device to be inspected after normalization processing.

[0007] In some embodiments, it includes: The AR device collects the inspection video of the device to be inspected and uploads it to the background system; The background system extracts the feature information of the inspection video, compares it with the preset features, and outputs an analysis result; When the analysis result is abnormal, the background system generates an alarm message and sends it to the AR device, and the AR device issues an alarm.

[0008] In some embodiments, the background system extracts the feature information of the inspection video, compares it with the preset features, and outputs an analysis result, including: The background system extracts the video frames of the inspection video; The background system pre-stores a number of reference images corresponding to the video frames, and compares the video frames with the reference images to obtain the analysis result.

[0009] In some embodiments, it includes: When the AR device receives the inspection task sent by the background system, it periodically sends location information to the background system; The background system associates the AR device with the device to be inspected corresponding to the inspection task, and obtains the ledger coordinate data corresponding to the device to be inspected from the device information database; The background system determines whether the AR device reaches the target location based on the location information and the ledger coordinate data; When the AR device reaches the target location, the background system controls the AR device to collect the image information of the target device and uploads it to the background system, and the background system identifies the image information to determine whether the target device is the device to be inspected; In the case where the target device is an inspection device, the background system sends an inspection instruction to the AR device.

[0010] In some embodiments, including: When the inspection task is completed, the background system releases the association between the AR device and the inspection device.

[0011] In some embodiments, including: The background system plans the optimal inspection path based on the location information received for the first time, the inventory coordinate data corresponding to each inspection device, and the historical failure probability corresponding to each inspection device, and sends the optimal inspection path to the AR device for display.

[0012] In some embodiments, including: Build a path optimization model: ; In the formula, It is an inspection equipment To inspection equipment The Euclidean distance of It is an inspection equipment The historical failure probability, is the weight of the historical failure probability, which is used to balance the impact of path distance and historical failure probability. is the decision variable of the inspection equipment, and selects To inspection equipment If yes, it is 1, otherwise it is 0; Constraints for building a path optimization model: Each inspection device can only be accessed once: ; Each inspection device can only be accessed once: ; Avoid sub-loops: ; In the formula, is a subset of the set of all inspection device nodes, and It is neither an empty set nor the entire set of inspection device nodes; Solve the path optimization model to obtain the optimal inspection path; The background system sends the optimal inspection path to the AR device for display.

[0013] In some embodiments, including: When the location information of the AR device deviates from the optimal inspection path, the background system sends a prompt message to the AR device, and the AR device displays the prompt message.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The background system periodically obtains the historical failure times and historical inspection times of each device in the device information database; based on the historical failure times and the historical inspection times, the background system sorts each device and screens the top N devices as the inspection devices to construct an inspection device set; based on the inspection device set, the background system generates an inspection task and sends the inspection task to the corresponding AR device of the corresponding inspector, where the inspection task includes inspection items and inspection steps; when the AR device receives an inspection instruction, the AR device displays the inspection items and inspection steps corresponding to the inspection device; by comprehensively considering the historical failure times and historical inspection times of the device, the devices that need to be preferentially inspected are reasonably screened, improving the inspection efficiency and the fault response speed. Description of the Drawings

[0015] The following further describes the embodiments of the present invention with reference to the drawings: Figure 1 It is a schematic implementation flow diagram of a power plant equipment inspection method based on an AR device provided by an embodiment of the present invention; Figure 2 It is a schematic composition structure diagram of an electronic device provided by an embodiment of the present invention. Detailed Embodiments

[0016] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings. The described embodiments should not be regarded as limitations of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0017] In the following description, reference is made to "some embodiments", which describe a subset of all possible embodiments. However, it can be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments, and can be combined with each other without conflict.

[0018] If similar descriptions such as "first / second / third" appear in the application documents, the following explanation is added. In the following description, the terms "first / second / third" only distinguish similar objects and do not represent a specific order for the objects. It can be understood that "first / second / third" can be interchanged with a specific order or sequence when permitted, so that the embodiments of the present invention described here can be implemented in an order other than that illustrated or described here.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this invention belongs. The terms used herein are for the purpose of describing embodiments of the invention only and are not intended to limit the invention.

[0020] Based on the problems existing in the related art, embodiments of the present invention provide a method for inspecting power plant equipment based on an AR device. The execution subject of the inspection method can be an electronic device. The electronic device can be various types of terminals such as an AR device, a laptop computer, a tablet computer, a desktop computer, a set-top box, a mobile inspection device (for example, a mobile phone, a portable music player, a personal digital assistant, a dedicated message inspection device, a portable game inspection device), or can also be implemented as a server. The server can be an independent physical server, or a server cluster or distributed system composed of multiple physical servers, or can also be a cloud server providing basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communications, middleware services, domain name services, security services, Content Delivery Network (CDN), and big data and artificial intelligence platforms.

[0021] In some embodiments, the functions implemented by the inspection method provided by the embodiments of the present invention can be realized by a processor of an electronic device calling program code, where the program code can be stored in a computer storage medium.

[0022] Embodiments of the present invention provide a method for inspecting power plant equipment based on an AR device, Figure 1 is a schematic flowchart of the implementation process of the method for inspecting power plant equipment based on an AR device provided by the embodiments of the present invention, as Figure 1 shown, including: Step S1: The background system periodically obtains the historical failure times and historical inspection times of each device in the device information database; In the embodiments of the present invention, the historical failure times and historical inspection times corresponding to each device are stored in the device information database. The background system periodically obtains the historical failure times and historical inspection times of each device in the device information database according to a preset period, and the preset period can be set as needed. Exemplarily, the preset period can be one week, one month, etc.

[0023] Step S2: The background system sorts each device based on the historical failure times and the historical inspection times, and screens the top N devices as the inspection devices to construct an inspection device set; In some embodiments, the background system sorts each device based on the historical failure times and the historical inspection times, and screens the top N devices as the inspection devices to construct an inspection device set, including: The background system performs normalization processing on the historical failure times and the historical inspection times; Inputs the normalized historical failure times and historical inspection times into a pre-constructed device scoring model to obtain the evaluation scores of each device; Performs a descending order sorting on each device based on the evaluation scores, and screens the top N devices as the inspection devices to construct an inspection device set.

[0024] In the embodiments of the present invention, normalization processing is performed on the historical failure times and the historical inspection times to ensure the comparability of data with different dimensions, and provide a unified data basis for subsequent comprehensive scoring calculations. Then, the normalized historical failure times and historical inspection times are input into a pre-constructed device scoring model to obtain the evaluation scores corresponding to the inspection devices. Among them, the more the historical failure times and the fewer the historical inspection times, the higher the evaluation score. Then, each device is sorted in descending order according to the evaluation scores, and the top N devices are screened as the inspection devices to construct an inspection device set, where the value of N is a certain proportion of the total number of devices in the hydropower plant.

[0025] In some embodiments, the device scoring model is: ; In the formula, is the evaluation score, , are the weight coefficients corresponding to the historical failure times and the historical inspection times respectively, is the inspection device The historical failure times after normalization processing, is the inspection device The historical inspection times after normalization processing.

[0026] Step S3: The background system generates an inspection task based on the inspection device set, and sends the inspection task to the AR device corresponding to the corresponding inspector, where the inspection task includes inspection items and inspection steps; In the embodiments of the present invention, the device information database stores the device numbers corresponding to each device, as well as the inspection items and inspection steps corresponding to the device numbers. The background system can retrieve the inspection items and inspection steps corresponding to the inspection devices in the inspection device set according to the device numbers of the inspection devices.

[0027] Step S4: When the AR device receives an inspection instruction, the AR device displays the inspection items and inspection steps corresponding to the inspection device.

[0028] In an embodiment of the present invention, the AR device is configured with a communication module and is communicatively connected to the background system through the communication module. The AR device may be an AR glasses and is configured with a display module. When the AR device receives an inspection instruction, the AR device displays the inspection items and inspection steps corresponding to the inspection device, so as to display the inspection items and inspection steps corresponding to the inspection device through the AR device to guide the inspection personnel to perform inspections on the inspection device.

[0029] In summary, by comprehensively considering the historical failure times and historical inspection times of the device, the devices that need to be preferentially inspected are reasonably selected to improve the inspection efficiency and fault response speed. The inspection items and inspection steps corresponding to the inspection device are displayed through the AR device to guide the inspection personnel to perform inspections on the inspection device, avoiding missed inspections and incorrect inspections.

[0030] In some embodiments, it includes: Step S10: The AR device collects the inspection video of the inspection device and uploads it to the background system; Step S20: The background system extracts the feature information of the inspection video, compares it with the preset features, and outputs an analysis result; Step S30: In the case where the analysis result is abnormal, the background system generates an alarm message and sends it to the AR device, and the AR device gives an alarm.

[0031] In an embodiment of the present invention, the AR device collects the inspection video of the inspection device and uploads it to the background system. The background system extracts the feature information of the inspection video, compares it with the preset features, and outputs an analysis result. In the case where the analysis result is abnormal, the background system generates an alarm message and sends it to the AR device, and the AR device gives an alarm, so that the inspection personnel can know in time, further improving the reliability and safety of the inspection.

[0032] In some embodiments, step S20 includes: Step S21: The background system extracts the video frames of the inspection video; Step S22: The background system pre-stores a number of reference images corresponding to the video frames, and compares the video frames with the reference images to obtain the analysis result.

[0033] In an embodiment of the present invention, the background system can extract the video frames of the inspection video at a preset time interval, reducing the processing volume and improving the processing efficiency. The background system compares the extracted video frames with the preset reference images, and can obtain the analysis result through similarity calculation. Among them, the analysis result may be that the inspection personnel missed an inspection, the inspection order was incorrect, the inspection device was abnormal, etc.

[0034] In some embodiments, it includes: Step S100: When receiving an inspection task sent by a background system, the AR device periodically sends location information to the background system; Step S200: the background system associates the AR device with the inspection device corresponding to the inspection task, and obtains the ledger coordinate data corresponding to the inspection device from the device information database; Step S300: the background system determines whether the AR device has reached the target location based on the location information and the ledger coordinate data; Step S400: when the AR device reaches the target location, the background system controls the AR device to collect image information of the target device and uploads it to the background system, and the background system identifies the image information and determines whether the target device is an inspection device; Step S500: When the target device is an inspection device, the background system sends an inspection instruction to the AR device.

[0035] In the embodiments of the present invention, in the prior art, it is usually necessary to collect the device code through the AR device and upload it to the background system to determine whether it is an inspection device. The inspection personnel need to find the device code, the inspection efficiency is low, and the operation is inconvenient. The present invention preliminarily determines whether the inspection personnel have reached the target position through the location information of the AR device and the inventory coordinate data of the inspection device. It can be understood that to determine whether the AR device has reached the target position, a virtual range can be formed by drawing a circle with a preset radius based on the inventory coordinate data of the inspection device as the origin. When the location information of the AR device is within the virtual range, it is determined that the AR device has reached the target position. Then, the image information of the target device is collected by the AR device and uploaded to the background system. The background system identifies the image information and determines whether the target device is an inspection device. There is no need to collect the device code, which improves the inspection efficiency and is convenient and practical.

[0036] In some embodiments, including: Step S600: When the inspection task is completed, the background system releases the association between the AR device and the inspection device.

[0037] In the embodiment of the present invention, when the inspection task is completed, the background system releases the association between the AR device and the inspection device, and the inspection result of this time is used so that the AR device can be associated with other inspection devices during the next inspection.

[0038] In some embodiments, including: Step S700: The background system plans the optimal inspection path based on the location information received for the first time, the inventory coordinate data corresponding to each inspection device, and the historical failure probability corresponding to each inspection device, and sends the optimal inspection path to the AR device for display.

[0039] In the embodiments of the present invention, the background system uses the position information received for the first time as the starting point, and then plans the optimal inspection path according to the ledger coordinate data and historical failure probabilities of each inspection device, comprehensively considering the distance of the path and the failure probabilities of the inspection devices, which can ensure a shorter path while preferentially accessing the inspection devices with higher failure probabilities, improving the inspection efficiency and the failure response speed.

[0040] The present invention provides a specific method for planning the optimal inspection path, including: Step S701: Construct a path optimization model: ; In the formula, is the Euclidean distance from inspection device to inspection device ; is the historical failure probability of inspection device ; is the weight of the historical failure probability, used to balance the influence of the path distance and the historical failure probability; is the decision variable of the inspection device. If it is selected to go from inspection device to inspection device , it is 1, otherwise it is 0; Step S702: Construct the constraint conditions of the path optimization model: Each inspection device can only be visited once: ; Each inspection device can only be accessed once: ; Avoid sub-loops: ; In the formula, is a subset of the set of all inspection device nodes, and is neither an empty set nor the entire set of inspection device nodes; Step S703: Solve the path optimization model to obtain the optimal inspection path; Step S704: The background system sends the optimal inspection path to the AR device for display.

[0041] In some embodiments, it includes: Step S705: When the position information of the AR device deviates from the optimal inspection path, the background system sends a prompt message to the AR device, and the AR device displays the prompt message.

[0042] In the embodiments of the present invention, when the position information of the AR device deviates from the optimal inspection path, the background system sends a prompt message to the AR device to prompt the inspection personnel that they have deviated from the optimal inspection path, thus ensuring the inspection efficiency.

[0043] It should be noted that in the embodiments of the present invention, if the above inspection method is implemented in the form of software functional modules and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the embodiments of the present invention, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to enable a computer inspection device (which can be a personal computer, a server, or a network inspection device, etc.) to execute all or part of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes: USB flash drives, mobile hard disks, read-only memories (ROM, Read Only Memory), magnetic disks, or optical discs and other various media that can store program codes. In this way, the embodiments of the present invention are not limited to any specific combination of hardware and software.

[0044] Correspondingly, the embodiments of the present invention provide a storage medium, on which a computer program is stored, and characterized in that when the computer program is executed by a processor, it implements the steps in the inspection method provided in the above embodiments.

[0045] The embodiments of the present invention provide an electronic device; Figure 2 is a schematic diagram of the composition structure of the electronic device provided in the embodiments of the present invention. As Figure 2 shown, the electronic device 400 includes: a processor 401, at least one communication bus 402, a user interface 403, at least one external communication interface 404, and a memory 405. Among them, the communication bus 402 is configured to realize the connection and communication between these components. Among them, the user interface 403 may include a display screen, and the external communication interface 404 may include a standard wired interface and a wireless interface. The processor 401 is configured to execute the program of the inspection method stored in the memory to implement the steps in the inspection method provided in the above embodiments.

[0046] It should be pointed out here that: the descriptions of the above storage medium and electronic device embodiments are similar to the descriptions of the above method embodiments and have beneficial effects similar to those of the method embodiments. For the technical details not disclosed in the embodiments of the storage medium and inspection device of the present invention, please refer to the descriptions of the method embodiments of the present invention for understanding.

[0047] It should be understood that the "one embodiment" or "an embodiment" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present invention. Therefore, the "in one embodiment" or "in an embodiment" that appears throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in various embodiments of the present invention, the magnitude of the serial numbers of the above processes does not mean the sequence of execution, and the execution sequence of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention. The serial numbers of the embodiments of the present invention above are only for description and do not represent the advantages or disadvantages of the embodiments.

[0048] It should be noted that in this article, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, object or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such a process, method, object or device. Without further limitation, the element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, object or device including the element.

[0049] In several embodiments provided by the present invention, it should be understood that the disclosed inspection equipment and methods can be implemented in other ways. The inspection equipment embodiments described above are only illustrative. For example, the division of the units is only a logical function division, and there can be other division methods in actual implementation. For example, multiple units or components can be combined, or can be integrated into another system, or some features can be ignored, or not executed. In addition, the coupling, direct coupling or communication connection between the components shown or discussed with each other can be through some interfaces, and the indirect coupling or communication connection of the inspection equipment or unit can be electrical, mechanical or other forms.

[0050] The units described as separate components above may or may not be physically separated, and the components shown as units may or may not be physical units; they can be located in one place or distributed to multiple network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0051] In addition, each functional unit in the embodiments of the present invention can be all integrated in a processing unit, or each unit can be separately used as a unit, or two or more units can be integrated in one unit; the above integrated unit can be implemented in the form of hardware, or in the form of a hardware plus a software functional unit.

[0052] Those of ordinary skill in the art can understand that all or part of the steps to implement the above method embodiments can be completed by hardware related to program instructions. The foregoing program can be stored in a computer-readable storage medium. When the program is executed, it performs the steps including the above method embodiments; and the foregoing storage medium includes: mobile storage inspection devices, read-only memories (ROMs), magnetic disks, or optical discs, etc., which can store program codes of various kinds.

[0053] Alternatively, if the above integrated units of the present invention are implemented in the form of software function modules and sold or used as independent products, they can also be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the embodiments of the present invention, in essence, or the part that contributes to the prior art can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for causing a controller to execute all or part of the methods described in the various embodiments of the present invention. And the foregoing storage medium includes: mobile storage inspection devices, ROMs, magnetic disks, or optical discs, etc., which can store program codes of various kinds.

[0054] As described above, the above are only the implementation manners of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A method for inspecting power plant equipment based on an AR device, characterized in that, include: The background system periodically obtains the historical fault times and historical inspection times of each device in the device information database; The backend system sorts each device based on the historical fault count and the historical inspection count, and selects the top N devices as inspection devices to construct an inspection device set; The backend system generates an inspection task based on the inspection device set, and sends the inspection task to the AR device corresponding to the corresponding inspection personnel, wherein the inspection task includes inspection items and inspection steps; When the AR device receives the inspection instruction, the AR device displays the inspection items and inspection steps corresponding to the inspection device.

2. The method for inspecting power plant equipment based on an AR device according to claim 1, wherein The background system sorts each device based on the historical fault count and the historical inspection count, and selects the top N devices as inspection devices to construct an inspection device set, including: The background system normalizes the historical fault times and historical inspection times; The normalized historical fault counts and historical inspection counts are input into the pre-built equipment scoring model to obtain the evaluation score of each device; The devices are sorted in descending order based on the evaluation scores, and the first N devices are selected as inspection devices to construct an inspection device set.

3. The method for inspecting power plant equipment based on an AR device according to claim 2, wherein, The device scoring model is: ； Wherein, is the evaluation score, , are the weight coefficients corresponding to the historical failure times and the historical inspection times respectively, is the historical failure times of the inspection equipment after normalization, is the historical inspection times of the inspection equipment after normalization.

4. The method for inspecting power plant equipment based on an AR device according to claim 1, wherein include: The AR device collects the inspection video of the inspection device and uploads it to the background system; The background system extracts feature information of the inspection video, compares it with preset features, and outputs analysis results; When the analysis result is abnormal, the background system generates an alarm message and sends it to the AR device, and the AR device issues an alarm.

5. The method for inspecting power plant equipment based on an AR device according to claim 4, characterized in that, The background system extracts feature information of the inspection video, compares it with preset features, and outputs analysis results, including: The background system extracts the video frame of the inspection video; The background system pre-stores a number of reference images corresponding to the video frame, and compares the video frame with the reference image to obtain the analysis result.

6. The method for inspecting power plant equipment based on an AR device according to claim 1, wherein include: When receiving the inspection task sent by the background system, the AR device periodically sends the location information to the background system; The backend system associates the AR device with the inspection device corresponding to the inspection task, and obtains the ledger coordinate data corresponding to the inspection device from the device information database; The background system determines whether the AR device has reached the target location based on the location information and the ledger coordinate data; When the AR device reaches the target location, the background system controls the AR device to collect image information of the target device and uploads it to the background system. The background system identifies the image information and determines whether the target device is an inspection device. In the case where the target device is an inspection device, the background system sends an inspection instruction to the AR device.

7. The method for inspecting power plant equipment based on an AR device according to claim 6, wherein, include: When the inspection task is completed, the background system releases the association between the AR device and the inspection device.

8. The method for inspecting power plant equipment based on an AR device according to claim 6, wherein, include: The background system plans an optimal inspection path based on the first received location information, the ledger coordinate data corresponding to each inspection device, and the historical failure probability corresponding to each inspection device, and sends the optimal inspection path to the AR device for display.

9. The method for inspecting power plant equipment based on an AR device according to claim 8, wherein It includes: Construct a path optimization model: ； Wherein, is the inspection device to the inspection device the Euclidean distance of, is the inspection device the historical failure probability of, is the weight of the historical failure probability, used to balance the influence of the path distance and the historical failure probability, is the decision variable of the inspection device, select from the inspection device to the inspection device then it is 1, otherwise it is 0; Constraints for constructing the path optimization model: Each inspection device can only be visited once: ； Each inspection device can only be accessed once: ； Avoid sub-loops: ； wherein, is a subset of the set of all inspection device nodes, and is neither an empty set nor the entire set of inspection device nodes; Solve the path optimization model to obtain the optimal inspection path; The background system sends the optimal inspection path to the AR device for display.

10. The method for inspecting power plant equipment based on an AR device according to claim 8, wherein, It includes: When the location information of the AR device deviates from the optimal inspection path, the background system sends a prompt message to the AR device, and the AR device displays the prompt message.

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