Foreign matter monitoring method and foreign matter monitoring system for nuclear power plant equipment

Abstract

The present application relates to a foreign body monitoring method and foreign body monitoring system for nuclear power plant equipment. The method includes: when the foreign body monitoring conditions of the target equipment in the nuclear power plant are met, obtaining a target foreign body image corresponding to the target foreign body; performing foreign body identification based on the target foreign body image to obtain target foreign body information; if the target equipment is at the start of maintenance, correspondingly recording the target foreign body image and the target foreign body information; if the target equipment is at the end of maintenance, obtaining the correspondingly recorded historical foreign body image and historical foreign body information, determining the foreign body removal result of the target foreign body based on the target foreign body information and the historical foreign body information, and correspondingly displaying the historical foreign body image, the historical foreign body information and the foreign body removal result; the foreign body removal result includes the equipment control area that has been removed and the abnormality. The use of this method can improve the accuracy of foreign body monitoring.

Description

Technical Field

[0001] The present application relates to the technical field of nuclear power plant foreign body monitoring, and in particular to a foreign body monitoring method and a foreign body monitoring system for nuclear power plant equipment. Background Art

[0002] During the equipment maintenance activities in nuclear power plants, it is usually necessary to dismantle and disassemble the equipment according to the outline requirements. During this work, the equipment is in an open state. If foreign objects enter the equipment during this work, it may seriously damage the equipment, causing the unit to shut down or the reactor to stop, and even lead to nuclear safety accidents in serious cases. Therefore, how to prevent foreign objects from entering the equipment due to negligence of personnel is a problem worthy of attention.

[0003] At present, foreign objects involved in equipment maintenance activities are usually manually registered by operators who perform equipment maintenance activities. However, this manual registration method may have problems such as careless inspection, typos, omissions, omissions, and wrong recording, thereby reducing the accuracy of foreign object monitoring. Summary of the invention

[0004] Based on this, it is necessary to provide a foreign matter monitoring method and a foreign matter monitoring system for nuclear power plant equipment that can improve the accuracy of foreign matter monitoring in response to the above technical problems.

[0005] A foreign body monitoring method for nuclear power plant equipment, the method comprising:

[0006] When a foreign object monitoring condition of a target device in a nuclear power plant is met, a target foreign object image corresponding to the target foreign object is obtained;

[0007] Performing foreign object recognition based on the target foreign object image to obtain target foreign object information;

[0008] If the target device is in the initial stage of maintenance, the target foreign object image and the target foreign object information are recorded accordingly;

[0009] If the target device is at the end of maintenance, obtain the corresponding recorded historical foreign object images and historical foreign object information, determine the foreign object removal result of the target foreign object based on the target foreign object information and the historical foreign object information, and display the historical foreign object images, the historical foreign object information and the foreign object removal result accordingly; the foreign object removal result includes the foreign object that has been removed from the equipment control area and the abnormality.

[0010] In one embodiment, the step of performing foreign object recognition based on the target foreign object image to obtain target foreign object information includes:

[0011] Performing foreign object recognition based on the target foreign object image to obtain a foreign object recognition result;

[0012] If the foreign object recognition result includes candidate foreign object information, displaying the candidate foreign object information;

[0013] When a foreign object information modification operation is detected, the candidate foreign object information is modified based on the foreign object information modification operation to obtain target foreign object information.

[0014] In one of the embodiments, the step of performing foreign object recognition based on the target foreign object image to obtain target foreign object information further includes:

[0015] If the foreign object recognition result does not include candidate foreign object information, displaying the target foreign object image;

[0016] When a foreign object information entry operation for the target foreign object image is detected, target foreign object information is acquired based on the foreign object information entry operation.

[0017] In one embodiment, the target foreign objects include: operators, tools, spare parts and consumables.

[0018] In one embodiment, the method further comprises:

[0019] When establishing a connection with a data management system, the historical foreign object image, the historical foreign object information, the target foreign object image, the target foreign object information and the foreign object removal result corresponding to the target foreign object are sent to the data management system to instruct the data management system to perform secondary processing and application.

[0020] A foreign body monitoring system for nuclear power plant equipment, the system comprising:

[0021] The terminal is used to obtain a target foreign object image corresponding to a target foreign object when a foreign object monitoring condition of a target device in a nuclear power plant is met; perform foreign object recognition based on the target foreign object image to obtain target foreign object information; if the target device is at the start of maintenance, the target foreign object image and the target foreign object information are recorded accordingly; if the target device is at the end of maintenance, the correspondingly recorded historical foreign object image and historical foreign object information are obtained, a foreign object removal result of the target foreign object is determined based on the target foreign object information and the historical foreign object information, and the historical foreign object image, the historical foreign object information and the foreign object removal result are displayed accordingly; the foreign object removal result includes the foreign object removed from the equipment control area and the abnormality.

[0022] In one of the embodiments, the system further comprises: a data management system;

[0023] The terminal is further configured to send the historical foreign body image, the historical foreign body information, the target foreign body image, the target foreign body information and the foreign body removal result corresponding to the target foreign body to the data management system when establishing a connection with the data management system;

[0024] The data management system is used for performing secondary processing and application based on the historical foreign body image, the historical foreign body information, the target foreign body image, the target foreign body information and the foreign body removal result.

[0025] In one of the embodiments, the system further comprises: a monitoring system;

[0026] The monitoring system is used to collect monitoring videos corresponding to the target device; when the foreign object analysis conditions are met, foreign object analysis is performed based on the monitoring video; when the alarm conditions are determined to be met through foreign object analysis, alarm information is triggered; when a connection is established with the terminal, the alarm information is sent to the terminal for display.

[0027] In one of the embodiments, the monitoring system is further configured to receive a video segment extraction instruction sent by the terminal, extract a corresponding video segment from the monitoring video based on the video segment extraction instruction, and send the video segment to the terminal for playback.

[0028] In one of the embodiments, the system further includes an edge computing device;

[0029] The edge computing device is used to provide computing power support for the terminal.

[0030] The foreign object monitoring method and foreign object monitoring system for the above-mentioned nuclear power plant equipment obtain a target foreign object image corresponding to the target foreign object when it is necessary to monitor the target equipment in the nuclear power plant for foreign objects, and quickly and accurately obtain the target foreign object information at the start stage or the end stage of maintenance based on the target foreign object image by automatic recognition and recording. Based on the foreign object information respectively identified for the same target foreign object at the start stage and the end stage of maintenance, a foreign object removal result is determined to characterize whether the target foreign object has been removed from the equipment control area during the current maintenance activity, and historical foreign object images, historical foreign object information and foreign object removal results are displayed accordingly, so that the operating personnel can quickly and accurately determine the foreign object removal situation of the current maintenance activity based on the foreign object removal result, and perform corresponding operations. Therefore, the accuracy of foreign object monitoring can be improved while ensuring the efficiency of foreign object monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A diagram showing an application environment of a foreign body monitoring method for nuclear power plant equipment in one embodiment;

[0032] Figure 2 A schematic diagram of a process flow of a foreign matter monitoring method for nuclear power plant equipment in one embodiment;

[0033] Figure 3 A schematic diagram of the interface of the home page of an intelligent identification registration application in one embodiment;

[0034] Figure 4 A schematic diagram of a main functional interface of an intelligent recognition registration application in one embodiment;

[0035] Figure 5 A schematic diagram of an interface of an anti-foreign matter management interface of an intelligent identification registration application in one embodiment;

[0036] Figure 6 A schematic diagram of a foreign body recognition interface of an intelligent recognition registration application in one embodiment;

[0037] Figure 7 A schematic diagram of a foreign body registration interface of an intelligent identification and registration application program in one embodiment;

[0038] Figure 8 A schematic diagram of the structure of a foreign body monitoring system for nuclear power plant equipment in one embodiment;

[0039] Fig. 9 A schematic diagram of an interface of a data management system for nuclear power plant equipment in one embodiment;

[0040] Fig.10 A schematic diagram of the architecture of a foreign matter monitoring system for nuclear power plant equipment in one embodiment;

[0041] Fig.11 Schematic diagram of the hierarchical logic relationship of a foreign object monitoring system for nuclear power plant equipment in one embodiment. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0043] The foreign body monitoring method for nuclear power plant equipment provided in this application can be applied to Figure 1In the application environment shown. Among them, the terminal 102 communicates with the data management system 104 through the network. When the terminal 102 reaches the foreign body monitoring condition of the target equipment in the nuclear power plant, the target foreign body image corresponding to the target foreign body is obtained, and the foreign body identification is performed based on the target foreign body image to obtain the target foreign body information. If it is in the initial stage of the maintenance of the target equipment, the target foreign body image and the target foreign body information are recorded accordingly. If it is in the end stage of the maintenance of the target equipment, the corresponding recorded historical foreign body image and historical foreign body information are obtained, and the foreign body removal result of the target foreign body is determined based on the target foreign body information and the historical foreign body information. The historical foreign body image, the historical foreign body information and the foreign body removal result are displayed accordingly; the foreign body removal result includes the equipment control area that has been removed and the abnormality. Among them, the terminal 102 can be, but is not limited to, various personal computers, smart phones, tablet computers and portable wearable devices. When the terminal 102 establishes a connection with the data management system 104, the historical foreign body image, historical foreign body information, target foreign body image, target foreign body information and foreign body removal result corresponding to the target foreign body are sent to the data management system 104 to instruct the data management system to perform secondary processing and application. The data management system 104 can be implemented by an independent server or a server cluster composed of multiple servers.

[0044] In one embodiment, Figure 2 As shown, a foreign body monitoring method for nuclear power plant equipment is provided, and the method is applied to Figure 1 The terminal in is used as an example to illustrate, including the following steps:

[0045] Step 202: when the foreign object monitoring condition of the target equipment in the nuclear power plant is met, a target foreign object image corresponding to the target foreign object is obtained.

[0046] Among them, the target device refers to the equipment in the nuclear power plant to be monitored for foreign objects, specifically, it can refer to the equipment in the nuclear power plant to be repaired and monitored for foreign objects, including but not limited to the main pump. The foreign object monitoring condition is the condition or basis for triggering the foreign object monitoring process, specifically, it can be the detection of the user's foreign object monitoring trigger operation. The foreign object monitoring trigger operation includes but is not limited to the user's trigger operation on the preset trigger control, or the foreign object monitoring instruction issued by the user through voice, triggering operations such as clicking, pressing or sliding, etc.

[0047] In one embodiment, the target foreign objects include: operators, tools, spare parts and consumables. The target foreign objects are relative to the target device to be monitored for foreign objects, and refer to other items in the control area of ​​the target device except for the objects of the target device itself, including but not limited to objects and people. Objects include tools, spare parts and consumables required for maintenance, tools such as torque wrenches, internal retaining ring pliers and vernier calipers, spare parts refer to spare parts / replacement parts of accessories / parts of the target device, consumables such as rags and cleaning fluids, and people such as operators performing detection operations or other persons who enter the control area abnormally.

[0048] Specifically, when the terminal determines that the foreign object monitoring conditions of the target equipment in the nuclear power plant are met, the camera integrated in the terminal is started to collect the target foreign object image corresponding to the target foreign object through the camera, so as to identify the target foreign object information corresponding to the target foreign object based on the collected target foreign object image.

[0049] Step 204: performing foreign object recognition based on the target foreign object image to obtain target foreign object information.

[0050] The target foreign body information is the digital data or information corresponding to the target foreign body. The target foreign body information includes but is not limited to the foreign body characteristic information and the collection time. The foreign body characteristic information includes but is not limited to the name, quantity, number, model / specification, accessories and collection time.

[0051] Specifically, the terminal performs foreign object recognition on the collected target foreign object image to obtain target foreign object information corresponding to the target foreign object.

[0052] In one embodiment, the terminal uses an existing AI (Artificial Intelligence)-based image recognition method to identify the target foreign body image and obtain the corresponding target foreign body information, such as foreign body recognition based on a trained convolutional neural network, which will not be repeated here. It is worth noting that the terminal uses its own computing power to complete the relevant processing flow of foreign body recognition without the help of an external network and computing module. It is easy to use and can run independently offline. Therefore, it can be applied to foreign body monitoring in the control area of ​​the target equipment in a nuclear power plant.

[0053] In one embodiment, the terminal can realize corresponding functions with the help of the computing power of the edge computing device to improve the efficiency of foreign object recognition and foreign object monitoring. The edge computing device is placed in the control area of ​​the target device, connected to the terminal through a local area network, and provides computing power support for the terminal, and can also provide storage space for the terminal.

[0054] Step 206: If the target device is in the initial stage of maintenance, the target foreign object image and target foreign object information are recorded accordingly.

[0055] Among them, the target equipment is in the initial stage of maintenance, which indicates that the operator has just entered the control area of ​​the target equipment and has not yet performed maintenance operations. At this time, it is necessary to automatically identify and enter the items entering the control area, that is, it is necessary to automatically identify and enter the relevant information of the operator and the relevant information of each item brought into the control area by the operator.

[0056] Specifically, the terminal determines whether it is in the initial stage of maintenance or the end stage of maintenance of the target device. If it is determined to be in the initial stage of maintenance, after identifying the target foreign object corresponding to the target foreign object, the target foreign object information and the corresponding target foreign object image are recorded locally to complete the automatic collection and entry of the target foreign object information and the target foreign object image. It can be understood that if it is in the initial stage of maintenance of the target device, it is necessary to use the target foreign object image and the target foreign object information as the historical foreign object image and historical foreign object information corresponding to the target foreign object, and record them locally accordingly, so that when it is in the end stage of maintenance, by comparing the foreign object images and the corresponding foreign object information collected for the target device at the initial stage of maintenance and the end stage of maintenance, the removal of the foreign object corresponding to the target foreign object can be determined.

[0057] In one embodiment, the terminal detects the maintenance stage identification information corresponding to the target device, and determines which maintenance stage the target device is in based on the maintenance stage identification information. The maintenance stage identification information is used to identify the maintenance stage of the target device, and can be manually entered or selected by an operator.

[0058] Step 208, if the target device is at the end of maintenance, obtain the corresponding recorded historical foreign object images and historical foreign object information, determine the foreign object removal result of the target foreign object based on the target foreign object information and the historical foreign object information, and display the historical foreign object images, historical foreign object information and foreign object removal results accordingly; the foreign object removal results include those that have been removed from the equipment control area and abnormalities.

[0059] Among them, the foreign object removal result is used to characterize the removal of the target foreign object from the control area of ​​the target device, including the removal of the device control area and the abnormality. The removal of the device control area indicates that the target device is successfully taken out of the control area of ​​the target device at the end of the maintenance. The abnormality indicates that the target device is not successfully taken out of the control area of ​​the target device at the end of the maintenance. The abnormal situation of the target foreign object removal includes but is not limited to the failure to match the target foreign object information corresponding to the target device with the historical foreign object information. Specifically, the accessories, parts or quantity of the target foreign object may be inconsistent, such as the operator's safety helmet is left in the control area of ​​the target device at the end of the maintenance.

[0060] Specifically, if the terminal determines that the target equipment is at the end of the maintenance phase, the terminal obtains the historical foreign object image and historical foreign object information corresponding to the target foreign object and the last corresponding record locally, and compares the obtained historical foreign object information with the target foreign object information currently identified, so as to determine the foreign object removal result corresponding to the target foreign object according to the comparison result. If the foreign object feature information in the historical foreign object information matches the foreign object feature information in the target foreign object information, the foreign object removal result corresponding to the target foreign object is determined to have been removed from the equipment control area, otherwise, the foreign object removal result is determined to be abnormal. Further, the terminal displays the historical foreign object image, historical foreign object information and foreign object removal result corresponding to the target foreign object, so that the operator can quickly determine the removal status of the target foreign object based on the displayed historical foreign object image, historical foreign object information and foreign object removal result, and when the foreign object removal result of the target foreign object is abnormal, quickly locate the abnormal situation of the target foreign object, so as to perform corresponding processing based on the located abnormal situation.

[0061] In one embodiment, if the target device is at the end of maintenance, the terminal will locally associate the target foreign object image, target foreign object information and foreign object removal result corresponding to the target foreign object with the historical foreign object image and historical foreign object information corresponding to the target foreign object record, so that when a connection is established with the data management system, the associated historical foreign object image, historical foreign object information, target foreign object image, target foreign object information and foreign object removal result will be sent to the data management system, so that the data management system can perform secondary processing and application based on the associated recorded data.

[0062] The foreign body monitoring method for nuclear power plant equipment described above obtains a target foreign body image corresponding to the target foreign body when it is necessary to monitor the target equipment in the nuclear power plant for foreign bodies, and quickly and accurately obtains the target foreign body information at the start stage or the end stage of maintenance based on the target foreign body image by automatic recognition and recording, and determines the foreign body removal result representing whether the target foreign body has been removed from the equipment control area during the current maintenance activity based on the foreign body information respectively identified for the same target foreign body at the start stage and the end stage of maintenance, and displays the historical foreign body image, historical foreign body information and foreign body removal result correspondingly, so that the operating personnel can quickly and accurately determine the foreign body removal situation of the current maintenance activity based on the foreign body removal result, and perform corresponding operations, thereby improving the accuracy of foreign body monitoring while ensuring the efficiency of foreign body monitoring.

[0063] In one embodiment, step 204 includes: performing foreign object recognition based on the target foreign object image to obtain a foreign object recognition result; if the foreign object recognition result includes candidate foreign object information, displaying the candidate foreign object information; when a foreign object information modification operation is detected, modifying the candidate foreign object information based on the foreign object information modification operation to obtain the target foreign object information.

[0064] Specifically, the terminal performs foreign body identification on the target foreign body image to obtain the corresponding foreign body identification result. If the foreign body identification result includes candidate foreign body information, it indicates that the target foreign body in the target foreign body image has been successfully identified, and the candidate foreign body information corresponding to the target foreign body has been obtained. However, since the foreign body information obtained by automatic identification may deviate from the actual foreign body information, in order to avoid entering foreign body information that deviates from the foreign body information actually corresponding to the target foreign body, the terminal displays the identified candidate foreign body information to the operator so that the operator can check and verify the candidate foreign body information. When the operator finds that there is a problem with the candidate foreign body information, the displayed candidate foreign body information can be modified through the foreign body information modification operation. If it is determined through detection that there is no problem with the candidate foreign body information, the foreign body information confirmation operation can also be triggered to instruct the terminal to use the confirmed foreign body information as the target foreign body information, and perform subsequent monitoring processes based on the target foreign body information. Correspondingly, after the terminal displays the candidate foreign object information, the dynamic detection operator triggers a foreign object information modification operation for the displayed candidate foreign object information, and modifies the displayed candidate foreign object information based on the detected foreign object information modification operation to obtain the target foreign object information.

[0065] In one embodiment, the terminal modifies the candidate foreign object information based on the detected foreign object information modification operation, and when a foreign object information confirmation operation triggered by an operator is detected, the terminal obtains the modified candidate foreign object information as the target foreign object information corresponding to the target foreign object.

[0066] In one embodiment, when the terminal displays the candidate foreign object information, it also displays the target foreign object image corresponding to the target foreign object, so that the operator can check and verify the corresponding candidate foreign object information with reference to the displayed target foreign object image.

[0067] In one embodiment, when the target foreign object is an operator or a tool, the terminal can accurately identify and obtain the corresponding target foreign object information based on the target foreign object image. However, when the target foreign object is a spare part or consumable, the spare parts and consumables may be used and worn out during the maintenance process, which may cause the terminal to be unable to accurately identify and obtain the corresponding target foreign object information based on the target foreign object image. Therefore, the operator needs to modify the identified candidate foreign object information to obtain accurate target foreign object information.

[0068] In the above embodiment, the candidate foreign object information obtained based on the automatic identification of the target foreign object image is displayed to the operator, so that the operator can check and verify the displayed candidate foreign object information, and when it is determined that there is a deviation in the candidate foreign object information, the candidate foreign object information with the deviation is modified to obtain accurate target foreign object information, which can improve the accuracy of foreign object information entry.

[0069] In one embodiment, step 204 further includes: if the foreign object recognition result does not include candidate foreign object information, displaying the target foreign object image; when a foreign object information entry operation for the target foreign object image is detected, acquiring the target foreign object information based on the foreign object information entry operation.

[0070] Specifically, if the foreign object identification result obtained does not include the candidate foreign object information, indicating that the terminal has failed to successfully identify the target foreign object in the target foreign object image, the target foreign object image that failed to be identified is displayed to the operator. Based on the displayed target foreign object image, the operator manually enters the target foreign object information corresponding to the target foreign object by triggering the foreign object information entry operation. Accordingly, the terminal dynamically detects the foreign object information entry operation triggered by the operator for the displayed target foreign object image, and when the foreign object information entry operation is detected, the terminal obtains the target foreign object information corresponding to the target foreign object based on the detected foreign object information entry operation.

[0071] In one embodiment, if the terminal fails to successfully identify the target foreign object in the target foreign object image, it will trigger the generation of a foreign object identification result including an identification failure. It is understood that when the terminal displays the target foreign object image, it will also display a corresponding input interface for the target foreign object information, so that the operator can enter the corresponding target foreign object information through the displayed input interface.

[0072] In the above embodiment, when the target foreign object in the target foreign object image is not successfully identified, the target foreign object image is displayed to obtain the target foreign object information corresponding to the target foreign object by manual entry. In this way, the target foreign object information corresponding to all target foreign objects can be obtained quickly and accurately.

[0073] In one embodiment, the foreign object monitoring method for the above-mentioned nuclear power plant equipment also includes: when establishing a connection with a data management system, the historical foreign object image, historical foreign object information, target foreign object image, target foreign object information and foreign object removal results corresponding to the target foreign object are sent to the data management system to instruct the data management system to perform secondary processing and application.

[0074] Among them, the data management system is used to perform secondary processing and application of the historical foreign body images, historical foreign body information, target foreign body images, target foreign body information and foreign body removal results corresponding to the target foreign body. Secondary processing and application include but are not limited to realizing high-level data visualization analysis, generating custom reports, archiving historical data and managing the facial recognition team members of operators, etc.

[0075] Specifically, the terminal detects the connection status with the data management system in real time. When it is determined that the connection with the data management system is established, the historical foreign body image, historical foreign body information, target foreign body image, target foreign body information and foreign body removal result corresponding to the target foreign body association record are sent to the data management system. The data management system performs secondary processing and application based on the received historical foreign body image, historical foreign body information, target foreign body image, target foreign body information and foreign body removal result.

[0076] In one embodiment, after the maintenance work of the target device is completed, the operator will carry the terminal and leave the control area of ​​the target device. In this way, the terminal can establish a connection with the data management system through the network and transmit data through the established connection, such as sending the historical foreign body images, historical foreign body information, target foreign body images, target foreign body information and foreign body removal results recorded locally to the data management system. The communication method between the terminal and the data management system includes but is not limited to 4G and wifi.

[0077] In the above embodiment, when a connection is established with a data management system, locally recorded data is transmitted to the data management system through the established connection, so that the data management system can perform higher-level information secondary processing and application based on the received data.

[0078] In one embodiment, in one or more embodiments of the present application, the foreign object monitoring operation performed by the terminal may be specifically performed by an APP (Application) running on the terminal, and the APP running on the terminal may be understood as an intelligent identification registration application.

[0079] like Figure 3 As shown, in one embodiment, a schematic diagram of the interface of the home page of an intelligent identification and registration application is provided. Taking the target device as the main pump and the control area of ​​the target device as the foreign body isolation zone as an example, the home page of the intelligent identification and registration application is the login interface of the main pump foreign body isolation zone intelligent identification and registration system, which displays the employee number and password input box, login and registration trigger controls, and can also display the name of the company that uses the system, such as "XXX Company". After the operator logs in to the main pump foreign body isolation zone intelligent identification and registration system through the login interface, the corresponding foreign body monitoring process can be implemented.

[0080] like Figure 4 As shown, in one embodiment, a schematic diagram of the main function interface of an intelligent recognition registration application is provided. Figure 4In the main function interface of the intelligent identification registration application, the maintenance information of the main pump is classified and displayed. The categories include ongoing, completed and all. In progress means that the main pump is in maintenance, completed means that the maintenance operation of the main pump has been completed, and all includes the maintenance information of all completed and ongoing main pumps. Among them, the maintenance information of the main pump includes the task number, functional position, overhaul round, work ticket number, work person in charge, guardian, start time and end time of maintenance, and foreign body monitoring information of the control area. The foreign body monitoring information includes the number of existing, removed, abnormal and all target foreign bodies in the control area, such as Figure 4 The interface shown shows the maintenance information of the completed 6-year inspection of the main pump numbered MPPRCP023. Each item of maintenance information is represented by an ellipsis “…”. It can be understood that Figure 4 The layout of the main function interface shown, the maintenance information displayed, and the amount of maintenance information displayed for the target equipment are only examples and are not intended to be specifically limited. For example, the relevant maintenance information of two main pumps can be displayed simultaneously on the main function interface.

[0081] like Figure 5 As shown, in one embodiment, a schematic diagram of an interface of an anti-foreign matter management interface of an intelligent recognition registration application is provided. Figure 5 Taking the main pump numbered MPPRCP023 as an example, the maintenance information of the main pump is displayed in the anti-foreign object management interface of the intelligent identification and registration application. The maintenance information of the main pump includes the task number, functional position, overhaul round, work ticket number, work leader, guardian, start time and end time of the maintenance, and foreign object monitoring information of the control area. The foreign object monitoring information includes the number of existing, removed, abnormal and all target foreign objects in the control area. The anti-foreign object management interface also displays a search box for quickly searching for historical foreign object information and historical foreign object images corresponding to the target foreign objects to be monitored.

[0082] The anti-foreign object management interface also displays the trigger controls corresponding to AI item recognition, AI personnel input and manual input. When the user's trigger operation on the trigger control is detected, it is determined that the foreign object monitoring conditions of the main pump are met, and the target foreign object image corresponding to the target foreign object is collected. Taking the target foreign object as the inner retaining ring pliers as an example, the operator triggers the trigger control corresponding to the AI ​​item recognition, and points the terminal's camera at the inner retaining ring pliers to be monitored. The terminal can collect the target foreign object image corresponding to the inner retaining ring pliers through the camera. Taking the target foreign object as the operator as an example, the operator triggers the trigger control corresponding to the AI ​​personnel input, and points the terminal's camera at his own face. The terminal can collect his own face image as the target foreign object image through the camera.

[0083] The anti-foreign object management interface also displays the historical foreign object images, historical foreign object information and foreign object removal results corresponding to one or more target foreign objects in this foreign object monitoring. Taking the target object as inner retaining ring pliers as an example, the corresponding historical foreign object information includes: name is inner retaining ring pliers, model / specification is 1.3mm, number is 6MAAJ013, remarks are empty, collection time is 2020-08-15 15:16:12, and the corresponding foreign object removal result is abnormal. Corresponding to the foreign object removal result, the abnormal details are also hidden and displayed, so that the operator can quickly locate the abnormal situation of the target foreign object according to the abnormal details. Taking the vernier caliper as an example, the corresponding historical foreign body information includes: the name is vernier caliper, the model / specification is 0-150mm, the quantity is 1, the number is 6A01010001, the remark is with packaging box, the collection time is 2020-08-15 15:16:13, and the corresponding foreign body removal result is that it has been removed from the equipment control area.

[0084] like Figure 6 As shown, in one embodiment, a schematic diagram of the interface of the foreign body recognition interface of the intelligent recognition registration application is provided. Figure 6 , taking the target foreign body as a torque wrench as an example, when the operator triggers Figure 5 The AI ​​item recognition shown corresponds to the trigger control, and when the camera is aimed at the torque wrench to be monitored, the terminal starts the camera and collects the target foreign object image corresponding to the torque wrench. The foreign object recognition interface will also display the name of the target foreign object obtained based on the target foreign object image recognition, such as "Enter: Torque Wrench". The trigger controls for triggering the foreign object image acquisition confirmation operation and the foreign object image acquisition cancellation operation will also be displayed, represented by labels 61 and 62 respectively.

[0085] like Figure 7 As shown, in one embodiment, a schematic diagram of the interface of the foreign body registration interface of the intelligent recognition registration application is provided. Figure 6 When the corresponding trigger control of the foreign body image acquisition confirmation operation is triggered, the intelligent recognition registration application will jump to Figure 7 The foreign body registration interface shown. Figure 7 The foreign object registration interface displays the target foreign object information and target foreign object image corresponding to the torque wrench. The target foreign object information, for example, is named torque wrench, the model / specification is 10-50N.m J306 / J208, the number is 6A01380001, the quantity is 1, and the accessories include 1 plastic shell and matching accessories, etc. It also displays the input person and input guardian who triggered the foreign object information identification and input process, such as the input person: P162952, the input guardian is P162952, and the time of entering the control area, such as 2020-100-24 17:11:52, and a trigger control for manually adding photos can also be displayed.

[0086] Figure 7 The displayed foreign body registration interface is the foreign body entry interface corresponding to the operator. The operator is also Figure 7 When the operator triggers the trigger control corresponding to the foreign object information confirmation operation, the foreign object registration interface jumps from the foreign object entry interface corresponding to the operator to the foreign object entry confirmation interface corresponding to the guardian, so that the guardian can further confirm the foreign object information to be entered to ensure the accuracy of the entered information. Figure 7 The control with the words "Entry completed by the person in charge (confirmation by the guardian in the next step)" is the trigger control corresponding to the foreign body information confirmation operation. It can be understood that during the foreign body information entry stage, it can also be confirmed by the operator alone, and the target foreign body information confirmed by the operator and the corresponding target foreign body image are recorded locally to be entered into the main pump foreign body isolation area intelligent identification registration system.

[0087] In one embodiment, the foreign object monitoring method provided in one or more embodiments of the present application is used to monitor foreign objects in the main pump of a nuclear power plant. Compared with manual registration of the main pump foreign object protection information, it has the advantages of high registration efficiency, high accuracy and high degree of dataization. Specifically, the target foreign object information corresponding to different tools, consumables, spare parts and operators in the nuclear power plant main pump foreign object protection control area is automatically identified through AI images, replacing manual handwriting one by one, which greatly improves efficiency. Moreover, the traditional manual registration of the main pump foreign object protection information is prone to handwriting errors, while the present system adopts fully digital automatic entry and is provided with one or more responsible personnel to verify the task process, which has the advantages of high accuracy and strong reliability. In addition, the traditional paper registration method only relies on handwritten record vouchers and cannot perform secondary analysis and utilization of data. The present system automatically performs digital archiving at the end of the registration work, which greatly improves data security and digitization.

[0088] The use of this foreign body monitoring method for foreign body monitoring in the foreign body control area of ​​the main pump of a nuclear power plant can improve safety quality, avoid the risk of introducing foreign bodies into the foreign body control area of ​​the main pump, and shorten the construction period and save costs. It can be understood that this foreign body monitoring method is not only applicable to foreign body monitoring in the foreign body control area of ​​the main pump of a nuclear power plant, but also applicable to foreign body monitoring in other equipment of the nuclear power plant, which will not be listed one by one here.

[0089] It should be understood that although Figure 2 The steps in the flowchart are shown in sequence as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. Moreover, Figure 2At least part of the steps may include multiple steps or multiple stages. These steps or stages are not necessarily performed at the same time, but can be performed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed in turn or alternately with other steps or at least part of the steps or stages in other steps.

[0090] In one embodiment, a foreign object monitoring system for nuclear power plant equipment is provided, including: a terminal, wherein: the terminal is used to obtain a target foreign object image corresponding to a target foreign object when a foreign object monitoring condition of a target device in the nuclear power plant is met; perform foreign object identification based on the target foreign object image to obtain target foreign object information; if the target device is in the initial stage of overhaul, the target foreign object image and the target foreign object information are recorded accordingly; if the target device is in the final stage of overhaul, the correspondingly recorded historical foreign object image and historical foreign object information are obtained, a foreign object removal result of the target foreign object is determined based on the target foreign object information and the historical foreign object information, and the historical foreign object image, the historical foreign object information and the foreign object removal result are displayed accordingly; the foreign object removal result includes the equipment control area that has been removed and the abnormality.

[0091] Specifically, when the terminal determines that the foreign body monitoring conditions of the target equipment in the nuclear power plant are met, the terminal starts the camera integrated in the terminal, collects the target foreign body image corresponding to the target foreign body through the camera, and performs foreign body recognition on the collected target foreign body image to obtain the target foreign body information corresponding to the target foreign body. The terminal determines whether it is in the maintenance start stage or the maintenance end stage of the target equipment. If it is determined to be in the maintenance start stage, after the target foreign body information corresponding to the target foreign body is identified, the target foreign body information and the corresponding target foreign body image are recorded locally to complete the automatic collection and entry of the target foreign body information and the target foreign body image.

[0092] If the terminal determines that the target equipment is at the end of the maintenance phase, the terminal obtains the historical foreign object image and historical foreign object information corresponding to the target foreign object and the last corresponding record locally, and compares the obtained historical foreign object information with the target foreign object information currently identified, so as to determine the foreign object removal result corresponding to the target foreign object according to the comparison result. If the foreign object feature information in the historical foreign object information matches the foreign object feature information in the target foreign object information, the foreign object removal result corresponding to the target foreign object is determined to have been removed from the equipment control area, otherwise, the foreign object removal result is determined to be abnormal. Further, the terminal displays the historical foreign object image, historical foreign object information and foreign object removal result corresponding to the target foreign object, so that the operator can quickly determine the removal status of the target foreign object based on the displayed historical foreign object image, historical foreign object information and foreign object removal result, and when the foreign object removal result of the target foreign object is abnormal, quickly locate the abnormal situation of the target foreign object, so as to perform corresponding processing based on the located abnormal situation.

[0093] The foreign object monitoring system of the above-mentioned nuclear power plant equipment obtains a target foreign object image corresponding to the target foreign object when it is necessary to monitor the target equipment in the nuclear power plant for foreign objects, and quickly and accurately obtains the target foreign object information at the start stage or the end stage of maintenance based on the target foreign object image by automatic recognition and recording, and determines the foreign object removal result representing whether the target foreign object has been removed from the equipment control area during the current maintenance activity based on the foreign object information respectively identified for the same target foreign object at the start stage and the end stage of maintenance, and displays the historical foreign object image, historical foreign object information and foreign object removal result correspondingly, so that the operating personnel can quickly and accurately determine the foreign object removal situation of the current maintenance activity based on the foreign object removal result, and perform corresponding operations, thereby improving the accuracy of foreign object monitoring while ensuring the efficiency of foreign object monitoring.

[0094] In one embodiment, the foreign body monitoring system of the above-mentioned nuclear power plant equipment also includes: a data management system; a terminal, which is also used to send the historical foreign body image, historical foreign body information, target foreign body image, target foreign body information and foreign body removal results corresponding to the target foreign body to the data management system when establishing a connection with the data management system; the data management system is used to perform secondary processing and application based on the historical foreign body image, historical foreign body information, target foreign body image, target foreign body information and foreign body removal results.

[0095] Specifically, the terminal detects the connection status with the data management system in real time. When it is determined that the connection with the data management system is established, the historical foreign body image, historical foreign body information, target foreign body image, target foreign body information and foreign body removal result corresponding to the target foreign body association record are sent to the data management system. The data management system performs secondary processing and application based on the received historical foreign body image, historical foreign body information, target foreign body image, target foreign body information and foreign body removal result.

[0096] In the above embodiment, when a connection is established with a data management system, locally recorded data is transmitted to the data management system through the established connection, so that the data management system can perform higher-level information secondary processing and application based on the received data.

[0097] like Figure 8As shown, in one embodiment, a structural schematic diagram of a foreign body monitoring system for nuclear power plant equipment is provided. A terminal for executing a foreign body monitoring method for nuclear power plant equipment stores the foreign body information and foreign body images collected during the maintenance of the target equipment locally, so that each terminal corresponds to a data warehouse, and the data warehouse stores the foreign body information and foreign body images collected and entered during the maintenance of the target equipment. When the terminal establishes a connection with the data management system, the terminal can transmit the data stored in the data warehouse to the data management system through the established connection, and can also transmit the data stored in the data warehouse to the data management system by hard copy. Specifically, the data stored in the data warehouse is copied to the terminal corresponding to the person in charge of the work and connected to the data management system through the intranet by hard copy, and then the terminal transmits the copied data to the data management system through the intranet. Figure 8 The following example shows three data warehouses deployed in different locations / regions (see Figure 8 The data stored in each data warehouse is copied to the terminal of the corresponding work leader by hard copy, and the copied data is transmitted to the data management system through the terminal, and the data management system performs secondary processing and application based on the data of each data warehouse.

[0098] Personnel with access rights can access the data management system through their corresponding terminals that have established intranet connection with the data management system to realize functions such as query, report printing and task assignment. When personnel with access rights access the data management system through the corresponding terminal, the terminal displays the data management system interface on the user operation interface and displays the data requested for access in the displayed data management system interface. Figure 8 The interface shown with the words "Main Pump Foreign Object Isolation Area Intelligent Identification and Registration System - Background System" is the data management system interface. The data displayed in the data management system interface is determined by the content requested by the personnel. It will not be introduced in detail here. For details, please refer to Fig. 9 .

[0099] like Fig. 9As shown, in one embodiment, a schematic diagram of the interface of a data management system for nuclear power plant equipment is provided. The data management system interface displays functional navigation bars such as "Home", "Anti-foreign object report query", "Data analysis", "Face recognition management" and "Settings", and also displays data requested for access, such as the analysis results of anti-foreign object tasks. A total of 22 anti-foreign object tasks have been completed, 2 are in progress, 8 have been completed, and 12 have been archived. By selecting the date and time, the equipment maintenance status corresponding to the anti-foreign object task in the corresponding time period can be obtained, and the foreign object monitoring status involved in the equipment maintenance process can also be obtained. For example, there are two main pumps involved in the maintenance this week, and their respective numbers are MPPRCP023 and MPPRCP007. The corresponding equipment maintenance status also includes maintenance progress, input items, output items, functional position, work supervisor, start time and end time, etc. The maintenance progress is completed and in progress. When the maintenance progress is in progress, the end time is displayed as NA (indicating empty or none). It is worth noting that Fig. 9 The data management system interface shown is for example only and is not intended to be limiting.

[0100] In one embodiment, the foreign object monitoring system of the above-mentioned nuclear power plant equipment also includes: a monitoring system; a monitoring system for collecting monitoring videos corresponding to the target equipment; when the foreign object analysis conditions are met, foreign object analysis is performed based on the monitoring video; when the alarm conditions are determined to be met through foreign object analysis, an alarm message is triggered; when a connection is established with the terminal, the alarm message is sent to the terminal for display.

[0101] Among them, the foreign body analysis condition is, for example, that the foreign body is detected during the non-maintenance time of the target device. The alarm condition is, for example, that the foreign body detected during the non-maintenance time of the target device is a non-operating person. In this way, by analyzing the surveillance video for foreign bodies, it is determined that the foreign body in the surveillance video is a non-operating person, and then the alarm condition is determined to be met. The alarm information includes, but is not limited to, the time when the foreign body is detected in the surveillance video, the foreign body feature information corresponding to the foreign body, the video clip containing the foreign body, the video frame and / or the face image, etc.

[0102] Specifically, the monitoring system dynamically collects the monitoring video corresponding to the target device, and determines whether the foreign matter analysis conditions are met based on the collected monitoring video. When it is determined that the foreign matter analysis conditions are met, the monitoring system performs foreign matter analysis based on the monitoring video to determine whether the alarm conditions are met. When it is determined that the alarm conditions are met, the alarm information is triggered, and it is determined whether to establish a connection with the terminal. If it is determined that a connection has been established with the terminal, the monitoring system sends the triggered alarm information to the terminal through the established connection for display, so that the operating personnel can perform emergency processing based on the alarm information to ensure the safe operation of the target device. If it is determined that a connection has not been established with the terminal, the alarm information is stored locally.

[0103] In the above embodiment, the monitoring system dynamically monitors the control area of ​​the target device to dynamically detect whether there are foreign objects in the control area that affect the safe operation of the target device. If there are foreign objects, an alarm message is triggered to ensure the safe operation of the target device.

[0104] In one embodiment, the monitoring system is further configured to receive a video segment extraction instruction sent by a terminal, extract corresponding video segments from the monitoring video based on the video segment extraction instruction, and send the video segments to the terminal for playback.

[0105] Among them, the video clip extraction instruction is an instruction for instructing the monitoring system to extract and send video clips, and is specifically used to specify the acquisition time period (start time and end time) corresponding to the video clip to be extracted. Specifically, during the maintenance process of the target device, the monitoring system dynamically collects the monitoring video corresponding to the target device. When the terminal detects the video clip acquisition operation triggered by the operator, the video clip extraction instruction is triggered, and the video clip extraction instruction is sent to the monitoring system to instruct the monitoring system to extract the video clip from the collected monitoring video according to the video clip extraction instruction, receive the video clip extracted and fed back by the monitoring system, and play it back. It can be understood that at the end of the maintenance stage, if the foreign body monitoring method provided by the present application determines that there is an abnormal target foreign body, the operator can trigger the video clip acquisition operation through the terminal to obtain the video clip from the monitoring system through the terminal and play it back, so as to further verify the abnormal situation of the abnormal target foreign body based on the replayed video clip.

[0106] In one embodiment, the surveillance video collected by the monitoring system can also be used for accident tracing. For example, when an accident occurs during maintenance or during non-maintenance hours, the cause of the accident can be traced based on the surveillance video.

[0107] In the above embodiment, playback analysis is performed based on the video clips collected and extracted by the monitoring system, so that operators can quickly check the abnormal conditions of the target foreign objects.

[0108] In one embodiment, the foreign object monitoring system of the above-mentioned nuclear power plant equipment also includes an edge computing device; the edge computing device is used to provide computing power support for the terminal.

[0109] In one embodiment, the edge computing device can specifically be a processor (CPU), which is used to provide computing power support for the terminal and can also be used to provide storage space for the terminal and the data management system.

[0110] like Fig.10As shown, in one embodiment, a schematic diagram of the architecture of a foreign body monitoring system for nuclear power plant equipment is provided. The foreign body monitoring system for nuclear power plant equipment includes a terminal, a data management system, an edge computing device, and a monitoring system, wherein the monitoring system is used for video playback and control, and can achieve 24-hour continuous monitoring, automatically sense and trigger snapshot recording when unattended, and perform video playback when a connection is established with the terminal. It can also analyze whether personnel have any impact on the control area of ​​the target device. The monitoring system can adopt a magnetic suction design to facilitate on-site installation. The edge computing device is used to provide computing power support for the terminal and provide storage space for the data management system. Specifically, a small-volume device can be used to provide massive storage and real-time computing power and other functions for the foreign body monitoring system of the entire nuclear power plant equipment. The data management system is used for data analysis and report management. It can realize high-level data visualization analysis, customized reports and other functions, and can customize configuration functions, management personnel identify team members and archive historical data, etc. An intelligent recognition and registration application runs on the terminal, which is used to intelligently identify and register foreign object information corresponding to each target foreign object in the control area of ​​the target device. Taking the target device as the main pump as an example, the intelligent recognition and registration application can realize all the functions of on-site inventory of the main pump's anti-foreign object isolation area, and can also intelligently generate reports. The core modules of the intelligent recognition and registration application include AI image recognition logic corresponding to tools (including special tools), spare parts and consumables, and face recognition logic corresponding to operators. Public modules include UI interface, APP interaction and business logic.

[0111] It is worth noting that the intelligent identification and registration application can be implemented based on the Android platform, but is not limited to this platform, and the data management system can be implemented based on the PC (personal computer) platform, but is not limited to this platform.

[0112] like Fig.11 As shown, in one embodiment, a hierarchical logical relationship diagram of a foreign body monitoring system for nuclear power plant equipment is provided. Fig.11 The foreign body monitoring system of the nuclear power plant equipment needs to integrate comprehensive resources such as image sensors, terminals, the Internet, databases and information platforms. According to the data flow, the foreign body monitoring system of the nuclear power plant equipment includes the environment layer, perception layer, application layer and network layer. Among them, the environment layer is the main objective things in the foreign body control of the target equipment, such as personnel and objects. The perception layer includes various sensor technologies, mainly image sensors, supplemented by taking pictures and text records. The application layer is after the sensor completes the image recognition, the recognition result is displayed on the terminal, and the on-site foreign body prevention work is guided. The network layer is after the on-site work is completed, the terminal transmits data with the data management system through 4G / wifi, so that the data management system can perform higher-level secondary processing and application based on the received data.

[0113] Specifically, when the target foreign object is an operator (the operator's face) or a tool, the target foreign object can be identified by collecting the target foreign object image through the camera, and performing AI face recognition or AI image recognition on the target foreign object image. When the target foreign object is a spare part or consumable, it is necessary to combine the camera collecting the target foreign object image and performing AI image recognition on the target foreign object image with the recognition method of taking pictures + text recording to ensure that the foreign object information corresponding to the target foreign object can be accurately recorded.

[0114] The specific definition of the foreign body monitoring system of nuclear power plant equipment can be found in the definition of the foreign body monitoring method of nuclear power plant equipment above, which will not be repeated here. Each module in the foreign body monitoring system of the above-mentioned nuclear power plant equipment can be implemented in whole or in part by software, hardware and their combination. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0115] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory or optical memory, etc. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM).

[0116] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0117] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A method for monitoring foreign matter in nuclear power plant equipment, characterized in that: The method comprises: When a foreign object monitoring condition of a target device in a nuclear power plant is met, a target foreign object image corresponding to the target foreign object is obtained; the target device refers to a device in the nuclear power plant to be repaired and to be monitored for foreign objects; the foreign object monitoring condition is the detection of a foreign object monitoring trigger operation by a user; the target foreign object refers to the target device relative to the foreign object to be monitored, and the target foreign object refers to other items in the control area of ​​the target device except the object of the target device itself; Performing foreign object recognition based on the target foreign object image to obtain target foreign object information; If the target device is in the initial stage of maintenance, the target foreign object image and the target foreign object information are recorded accordingly; If the target device is at the end of maintenance, obtain the corresponding recorded historical foreign object images and historical foreign object information, determine the foreign object removal result of the target foreign object based on the target foreign object information and the historical foreign object information, and display the historical foreign object images, the historical foreign object information and the foreign object removal result accordingly; the foreign object removal result includes the foreign object that has been removed from the equipment control area and the abnormality.

2. The method according to claim 1, characterized in that The step of performing foreign object recognition based on the target foreign object image to obtain target foreign object information includes: Performing foreign object recognition based on the target foreign object image to obtain a foreign object recognition result; If the foreign object recognition result includes candidate foreign object information, displaying the candidate foreign object information; When a foreign object information modification operation is detected, the candidate foreign object information is modified based on the foreign object information modification operation to obtain target foreign object information.

3. The method according to claim 2, characterized in that The step of performing foreign object recognition based on the target foreign object image to obtain target foreign object information further includes: If the foreign object recognition result does not include candidate foreign object information, displaying the target foreign object image; When a foreign object information entry operation for the target foreign object image is detected, target foreign object information is acquired based on the foreign object information entry operation.

4. The method according to any one of claims 1 to 3, characterized in that: The target foreign objects include: operators, tools, spare parts and consumables.

5. The method according to claim 4, characterized in that The method further comprises: When establishing a connection with a data management system, the historical foreign object image, the historical foreign object information, the target foreign object image, the target foreign object information and the foreign object removal result corresponding to the target foreign object are sent to the data management system to instruct the data management system to perform secondary processing and application.

6. A foreign body monitoring system for nuclear power plant equipment, characterized in that: The system comprises: The terminal is used to obtain a target foreign object image corresponding to a target foreign object when a foreign object monitoring condition of a target device in a nuclear power plant is met; the target device refers to a device in the nuclear power plant to be repaired and to be monitored for foreign objects; the foreign object monitoring condition is the detection of a user's foreign object monitoring trigger operation; the target foreign object is relative to the target device to be monitored for foreign objects, and the target foreign object refers to other items in the control area of ​​the target device except the objects of the target device itself; foreign object identification is performed based on the target foreign object image to obtain target foreign object information; if the target device is in the initial stage of maintenance, the target foreign object image and the target foreign object information are recorded accordingly; if the target device is in the end stage of maintenance, the correspondingly recorded historical foreign object image and historical foreign object information are obtained, the foreign object removal result of the target foreign object is determined based on the target foreign object information and the historical foreign object information, and the historical foreign object image, the historical foreign object information and the foreign object removal result are displayed accordingly; the foreign object removal result includes the device control area that has been removed and the abnormality.

7. The system according to claim 6, characterized in that The system also includes: a data management system; The terminal is further configured to send the historical foreign body image, the historical foreign body information, the target foreign body image, the target foreign body information and the foreign body removal result corresponding to the target foreign body to the data management system when establishing a connection with the data management system; The data management system is used for performing secondary processing and application based on the historical foreign body image, the historical foreign body information, the target foreign body image, the target foreign body information and the foreign body removal result.

8. The system according to claim 6, characterized in that The system further comprises: a monitoring system; The monitoring system is used to collect monitoring videos corresponding to the target device; when the foreign object analysis conditions are met, foreign object analysis is performed based on the monitoring video; when the alarm conditions are determined to be met through foreign object analysis, alarm information is triggered; when a connection is established with the terminal, the alarm information is sent to the terminal for display.

9. The system according to claim 8, characterized in that The monitoring system is also used to receive a video segment extraction instruction sent by the terminal, extract a corresponding video segment from the monitoring video based on the video segment extraction instruction, and send the video segment to the terminal for playback.

10. The system according to any one of claims 6 to 9, characterized in that: The system also includes an edge computing device; The edge computing device is used to provide computing power support for the terminal.

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