Radioactive source library management system and management method

Abstract

The invention relates to a radioactive source library management system, which comprises an intrusion detection unit comprising an infrared detector, an infrared camera and an emergency alarm device; a video monitoring unit; the radiation value detection unit comprises a fixed point radiation detector and a tracing robot moving radiation detector; an access control unit; the management and control platform unit is respectively connected with the intrusion detection unit, the video monitoring unit, the radiation value detection unit and the access control unit and is used for carrying out data acquisition on each unit, and the management and control platform unit is connected with the dynamic display unit and is used for providing display and alarm information for the dynamic display unit. Moving a radiation detector through a tracing robot to regularly collect the radiation dose in the radioactive source library, and judging whether the real-time number of the radioactive sources in the source library and the radiation dose are safe or not; manual collection is not needed, a radiation monitor does not need to be arranged for each radioactive source, the number of devices is reduced, meanwhile, the radiation detector does not need to be fixed to a radioactive source tank, touch is avoided, and damage is not prone to occurring.

Description

Technical Field

[0001] The present invention relates to the technical field of radioactive source library supervision, and in particular to a radioactive source library management system and a management method. Background Art

[0002] At present, the new "Environmental Protection Law" and "Work Safety Law" have been fully implemented, putting forward higher requirements for the management and use of radioactive sources. As a special area for centralized storage of radioactive sources, the management and use of radioactive sources must be "absolutely safe". Currently, the management of radioactive source libraries mostly relies on manual supervision, which has a high labor intensity for personnel, and there is a possibility of missed reports and false reports. The real-time performance of data related to the management of radioactive source libraries is poor, and the supervision data of radioactive source libraries cannot be collected, stored, uploaded, and applied in real time and comprehensively, resulting in supervision blind spots and potential hazards.

[0003] A Chinese patent application with an application number of 201610780194.0 (publication number CN106339847A) discloses a dynamic supervision system and method for a radioactive source digital source library, which includes: an identity recognition unit, a perimeter warning unit, an inbound and outbound detection unit, a radiation detection unit, a source library data center, and a dynamic display unit. The source library data center is respectively connected to the identity recognition unit, the perimeter warning unit, the inbound and outbound detection unit, and the radiation detection unit to collect data from each unit, and the source library data center is connected to the dynamic display unit to provide visual real-time dynamic information of radioactive sources in the source library for the dynamic display unit.

[0004] However, in the above supervision system, the inspection and management of radioactive sources are all carried out by inspection personnel holding inspection equipment at regular intervals. The labor intensity of the staff is high, and there is a possibility of missed reports and false reports. The entry of inspection personnel into the radioactive source library will bring certain radiation effects, failing to reduce the radiation intake of the staff and improve the inspection efficiency and effect. At the same time, the radioactive source library supervision system cannot supervise the standardization of outbound and inbound operation behaviors. In addition, the daily data of the radioactive source library is not systematically classified and analyzed, and manual data statistics and summary are often used, which also consumes a lot of time in the monitoring process, reducing the overall monitoring efficiency and data timeliness, and reducing the efficiency of handling radioactive source accidents.

[0005] Currently, intrusion detection, video monitoring units, access control and other detection and sensing devices are also set in the radioactive source library, but the data integration and intelligent analysis of the detection and sensing data of each part of the radioactive source library have not been carried out. The current systems work relatively independently, failing to achieve data sharing, unable to conduct all-round and multi-parameter intelligent management and control of the radioactive source library, and the supervision data cannot be collected in real time and comprehensively, resulting in missed reports, false reports, supervision blind spots and potential hazards. At the same time, the development and application of intelligent security, operation, operation and maintenance, etc. in the radioactive source library have not been proposed, and the management and operation efficiency and effect of the radioactive source library are low. Summary of the Invention

[0006] The first technical problem to be solved by the present invention is to provide a management system for a radioactive source library capable of automatic inspection according to the current situation of the prior art.

[0007] The second technical problem to be solved by the present invention is to provide an efficient and safe management method for the above-mentioned radioactive source library management system according to the current situation of the prior art.

[0008] The technical solution adopted by the present invention to solve the above first technical problem is as follows: The radioactive source library management system is characterized by including

[0009] An intrusion detection unit, including an infrared detector, an infrared camera, and an emergency alarm device;

[0010] A video monitoring unit for monitoring the inside and outside of the radioactive source library;

[0011] A radiation value detection unit, including a fixed-point radiation detector and a tracing robot mobile radiation detector;

[0012] An access control unit, having a face recognition terminal for the management and supervision of access;

[0013] A dynamic display unit, including a display screen, a speaker, and an audible and visual alarm device arranged in the duty room; and

[0014] A control platform unit, the control platform unit is respectively connected to the intrusion detection unit, the video monitoring unit, the radiation value detection unit, and the access control unit and collects data from each unit. The control platform unit processes, fuses, and intelligently analyzes the collected data. The control platform unit is connected to the dynamic display unit and provides display and alarm information for the dynamic display unit according to the results of data processing, fusion, and intelligent analysis.

[0015] Further, the infrared detector includes:

[0016] A first infrared detector and an infrared camera arranged on the outer wall of the radioactive source library. When someone climbs over the wall and enters the radioactive source library, the soft perimeter of the first infrared detector and the infrared camera is triggered, and the emergency alarm device sends out an alarm message;

[0017] A second infrared detector arranged at the entrance of the radioactive source library. When someone breaks into the detection range of the entrance of the library, the second infrared detector is triggered, and the emergency alarm device sends out an alarm message;

[0018] The third infrared detector installed in the radioactive source library warehouse is triggered when someone enters the detection range inside the warehouse, and the emergency alarm device emits an alarm message. To achieve the purpose of in-depth defense, the present invention has multiple layers of defenses for the radioactive source library to prevent outsiders from illegally breaking in from outside the library.

[0019] Further, the video monitoring unit includes a first camera installed on the fence of the radioactive source library, a second camera installed at the entrance of the radioactive source library warehouse, and a third camera installed inside the warehouse. The video signals captured by each of the above cameras are transmitted to the management and control platform unit.

[0020] Further, the fixed-point radiation detectors are respectively arranged inside and outside the radioactive source warehouse for detecting whether there is radiation leakage from the radioactive source;

[0021] The tracking robot mobile radiation detector includes a robot, which is equipped with a radiation monitor, an inspection camera, and a display module. The robot inspects the radiation values of each radioactive source pit or radioactive source, and the display module can display the radiation values detected by the radiation monitor in real time and upload the radiation data to the management and control platform unit in real time.

[0022] The technical solution adopted by the present invention to solve the above second technical problem is as follows: The management method of the above radioactive source library management system, characterized in that: the method is used for intelligent entry and exit of radioactive sources, including the following steps:

[0023] Step 1: The management and control platform unit starts the entry and exit process, and the duty personnel confirm it;

[0024] Step 2: The on-site operation personnel enter the fence gate of the radioactive source library through the face recognition terminal of the access control unit, and the duty personnel conduct a secondary confirmation. The intrusion detection unit is in the disarmed state;

[0025] Step 3: The on-site operation personnel enter the entrance of the radioactive source library warehouse. The second camera at the warehouse entrance conducts intelligent protective clothing detection on the on-site operation personnel. After passing the detection, the radioactive source library warehouse door is allowed to be opened, otherwise a warning of not allowing the opening of the radioactive source library warehouse door is issued and recorded;

[0026] Step 4: The on-site operation personnel enter the warehouse and place the radioactive source items in the inbound inspection area or outbound inspection area. The safety inspection of the inbound and outbound radioactive source items is carried out through video AI technology. For the radioactive source items that meet the requirements, they are allowed to enter and exit the warehouse, and voice announcements and system platform displays are made; for the radioactive source items that do not meet the requirements, they are prohibited from entering and exiting the warehouse and are processed in a timely manner;

[0027] Step 5: After the on-site operators complete the inbound and outbound process, the on-site operators evacuate from the perimeter gate of the radiation source storage, the access control unit closes, and the anti-intrusion detection unit's defense function is restarted.

[0028] Further, the security inspection includes: verifying the packaging, labels, and markings of the radiation sources, detecting the radiation values of the radiation source items, ensuring that the actual inbound and outbound radiation source items correspond to the planned inbound and outbound radiation source items, and uploading the security inspection data to the control platform unit.

[0029] Further, the method is used for online inspection of a radiation source storage, and includes the following steps:

[0030] Step (1): The tracing robot moving radiation detector turns on the inspection mode according to the instructions of the control platform unit;

[0031] Step (2): Along a fixed tracing route, the robot of the tracing robot moving radiation detector detects the radiation value of the radiation source pit and uploads the radiation data to the control platform unit;

[0032] Step (3): The inspection camera installed on the robot detects the packaging, labels, and markings of the radiation source items and checks whether the covers of the radiation source storage and the radiation source sealed cans are closed, and uploads the detected information to the control platform unit;

[0033] Step (4): If the detected radiation value of the radiation source pit exceeds the standard, the control platform unit gives a pre-alarm, and at the same time links to the cameras in the nearby area, locks the perspective of the cameras, displays the images captured by the cameras on the control platform unit and determines whether to give an alarm according to the images, and then the robot moves to the next radiation source;

[0034] Step (5): If the detected radiation value of the radiation source pit does not exceed the standard, the robot directly moves to the next radiation source;

[0035] Step (6): Through the intelligent recognition technology of the cameras installed in the radiation source storage, the environment in the storage is compared with images. When there are image changes, an alarm will be triggered and the changed images will pop up on the control platform unit.

[0036] Further, the method is used for alarming of lost or leaked radiation sources, and includes the following steps:

[0037] Step A: If the infrared detector in the radiation source storage detects an intrusion by a person, a secondary judgment is made through the cameras in the storage, and at the same time the cameras push the images to the control platform unit. The software of the control platform unit confirms the intrusion. After the software confirms the intrusion by a person, the duty officer confirms the intrusion by a person again and then sends an alarm signal and images to the public security;

[0038] Step B: The average value of the dose values generated by the normal storage of the radiation source within a certain period of time is used as the reference value. Once the radiation dose value suddenly increases and remains unchanged, the control platform unit gives an alarm reminder of radiation source leakage, and at the same time, it links the cameras in the warehouse for confirmation. According to the images collected by the cameras, it is judged again whether there is leakage and an alarm. If leakage is confirmed, the staff will handle it according to the radiation source accident emergency plan;

[0039] Step C: Once the radiation dose value suddenly changes and returns to the reference value or the radiation value cannot be detected, the control platform unit gives an alarm reminder of radiation source loss, and at the same time, it links the cameras in the warehouse for confirmation. According to the images collected by the cameras, it is judged again whether there is loss and an alarm. If loss is confirmed, the staff will handle it according to the radiation source accident emergency plan.

[0040] Furthermore, the control platform unit generates an annual report on the data of the management system.

[0041] Compared with the prior art, the advantages of the present invention are as follows:

[0042] (1) By using the tracing vehicle-mounted radiation monitor to collect the radiation dose in the radiation source library at regular intervals, it is judged whether the real-time quantity and radiation dose of the radiation source in the source library are safe, replacing the regular inspection by the inspection personnel holding the inspection equipment. Moreover, there is no need to additionally set up an RFID system, make RFID tags, and arrange radiation monitors for each radiation source, reducing the number of devices. At the same time, the radiation detector does not need to be fixed on the radiation source tank, avoiding touching, not easily damaged, and convenient to maintain;

[0043] (2) By using the control platform unit to obtain the parameter data in the radiation source warehouse and perform intelligent data analysis, manual intervention is minimized, realizing the process control of the outbound and inbound of the radiation source library, the intelligent inspection of the radiation source, the intelligent analysis of the safety risks of the radiation source library, reducing and avoiding the occurrence of production management accidents, and having the advantages of saving manpower and material resources and high work efficiency;

[0044] (3) Integrating hardware devices such as the intrusion detection unit, video monitoring unit, radiation value detection unit, access control unit, dynamic display unit, and control platform unit, providing a means for standardizing the radiation source management process for users with an integrated control platform, meeting management functions such as personnel safety supervision, intelligent inbound and outbound of radiation sources, alarm for loss and leakage of radiation sources, online inspection of radiation sources, and intelligent reports, realizing intelligent real-time supervision by users, improving the intelligent safety control ability of the radiation source library, and realizing safety applications and emergency guarantees;

[0045] (4) The control platform unit mines the data of the intrusion detection unit, video surveillance unit, radiation value detection unit, access control unit, etc., analyzes and utilizes the correlation between the data, and realizes the informatization management and real-time monitoring of each link of the radioactive source library in combination with the work processes and scenarios of various radioactive source libraries; in case of abnormal situations such as personnel intrusion, excessive radiation value, loss and theft of radioactive sources in the radioactive source library, it alarms and disposes in time, realizes the purpose of knowing the safety status of the radioactive source library and controlling the consequences of abnormal events, and improves the intelligent control level of the management of the radioactive source library. Description of the Drawings

[0046] Figure 1 It is a composition and relationship diagram of the radioactive source library management system in the embodiment of the present invention;

[0047] Figure 2 It is a personnel safety management flow chart in the embodiment of the present invention;

[0048] Figure 3 It is a radioactive source in-out warehouse management flow chart in the embodiment of the present invention;

[0049] Figure 4 It is a radioactive source library radiation monitoring management flow chart in the embodiment of the present invention;

[0050] Figure 5 It is a radioactive source library online inspection management flow chart in the embodiment of the present invention;

[0051] Figure 6 It is a radioactive source loss management flow chart in the embodiment of the present invention;

[0052] Figure 7 It is a radioactive source leakage management flow chart in the embodiment of the present invention. Detailed Embodiments

[0053] The present invention will be further described in detail below in conjunction with the embodiments of the drawings.

[0054] Embodiment 1

[0055] A radioactive source library management system includes an intrusion detection unit, a video surveillance unit, a radiation value detection unit, an access control unit, a dynamic display unit and a control platform unit.

[0056] 1. Intrusion Detection Unit

[0057] For the purpose of achieving in-depth defense, the intrusion detection unit sets up multiple layers of defenses for the radioactive source library to prevent unauthorized outsiders from breaking in illegally from outside the library. The intrusion detection unit includes front-end infrared detectors, emergency alarm devices, etc. According to the on-site situation, infrared detectors are reasonably arranged in areas such as the entrances and exits inside and outside the radioactive source storage building to ensure that there are no blind spots in the detection area. The infrared detectors are set in layers. The first layer is set on the outer wall of the radioactive source library. When someone climbs over the fence and enters the radioactive source library, the soft perimeter function of the infrared detector and the infrared camera is triggered, and the emergency alarm device issues an alarm. The second layer is set at the entrance of the radioactive source library and has an anti-tampering function. When someone breaks into the detection range at the entrance of the library, the emergency alarm device issues an alarm. The third layer is set inside the radioactive source library. When someone breaks into the detection range inside the library, the emergency alarm device issues an alarm.

[0058] 2. Video surveillance unit

[0059] The video surveillance unit is used to monitor the inside and outside of the radioactive source storage building and has functions such as real-time recording, repeated playback, and dropped frame alarm. According to the on-site situation, the first camera is set on the fence of the radioactive source library, the second camera is set at the entrance of the radioactive source library, and the third camera is set inside the library. The video signals of the above-mentioned cameras are all transmitted to the control platform unit.

[0060] 3. Access control unit

[0061] The access control unit is used for the management and supervision of normal access. Door magnets, electric locks, face recognition, etc. are set on the entrance door of the radioactive source library fence, and the signals of the access control unit are transmitted to the control platform unit.

[0062] 4. Radiation value detection unit

[0063] The radiation value detection unit includes fixed-point radiation detectors and trace robot mobile radiation detectors; the fixed-point radiation detectors are respectively set inside and outside the radioactive source storage building to detect whether there is radiation leakage from the radioactive source and upload the detection data to the control platform unit; the trace robot mobile radiation detector includes a robot, and the robot is equipped with a radiation monitor, an inspection camera, and a display module. The display module can display the radiation value detected by the radiation monitor in real time. The robot inspects the radiation values of each radioactive source pit or radioactive source and uploads the radiation data to the control platform unit in real time. The fixed-point radiation detectors and the trace robot mobile radiation detectors construct a real-time dynamic radioactive source distribution monitoring map of the radioactive source library, which can intuitively and comprehensively display the values of the radioactive sources on the control platform unit, so as to provide timely and effective early warnings.

[0064] 5. Dynamic display unit

[0065] The dynamic display unit includes an LED display screen and a speaker installed outside the radiation source library, as well as an audible and visual alarm installed in the duty room; the LED display screen displays the radiation value and important alarm information in real time, and the speaker broadcasts corresponding prompts and alarm voices according to the requirements of the control platform unit.

[0066] 6. Control Platform Unit

[0067] The control platform unit is respectively connected to the intrusion detection unit, the video monitoring unit, the radiation value detection unit and the access control unit, and collects data from each unit. The control platform unit processes, fuses and intelligently analyzes the collected data. The control platform unit is connected to the dynamic display unit and provides display and alarm information for the dynamic display unit according to the results of data processing, fusion and intelligent analysis, as Figure 1 shown.

[0068] Embodiment 2

[0069] A management method for a radiation source library management system, which integrates hardware devices such as an intrusion detection unit, a video monitoring unit, a radiation value detection unit, an access control unit, a dynamic display unit and a control platform unit, and provides a means for standardizing the radiation source management process for users with an integrated control platform, meeting management functions such as personnel safety management, radiation source storage and retrieval management, radiation source loss or leakage management, online inspection management of radiation sources, and intelligent reports, realizing intelligent real-time supervision of users, improving the intelligent safety control ability of the radiation source library, and realizing safe application and emergency support.

[0070] 1. Personnel Safety Management

[0071] A face recognition device is configured at the entrance of the radiation source library wall to authorize the access of different roles such as on-site operators and duty officers to the radiation source library. First, on-site operators in the radiation source library must hold certificates to work. They are identified by comparing with the permitted personnel database in the face recognition device. Only the personnel allowed in the system can enter the wall gate. Then, after the on-site operator enters the wall gate, the second camera at the warehouse door will trigger the AI detection algorithm to detect whether the personnel entering the radiation source library are wearing protective clothing through the camera video. If it is detected that the entering personnel are not wearing protective clothing, an alarm will be issued and recorded, and the duty officer will be prompted through the control platform unit to effectively ensure the safety of on-site operators and the compliance of the operation process. If the on-site operator passes the detection of the second camera and enters the operation area inside the radiation source library through face recognition; finally, the camera inside the radiation source warehouse locates the personnel's position and records the time and real-time radiation value to dynamically monitor the individual radiation dose of on-site operators. If the cumulative radiation dose of on-site operators exceeds the standard, a stop operation alarm will be issued; in addition, the control platform unit updates the individual dose database and issues quarterly and annual dose reports. The above personnel safety management process is as Figure 2 shown.

[0072] 2. Radiation source inbound and outbound management

[0073] The control platform unit is equipped with a radiation source inbound and outbound management process, which is used to manage the access of on-site operators and radiation sources to the radiation source library, as Figure 3 shown, and it includes the following steps:

[0074] Step 1: The control platform unit starts the inbound and outbound process, and the duty officer confirms it;

[0075] Step 2: The on-site operator enters the radiation source library wall gate through the face recognition terminal of the access control unit, and the duty officer makes a secondary confirmation. At the same time, the control platform unit controls the intrusion detection unit to be in the disarmed state;

[0076] Step 3: When the on-site operator reaches the radiation source library warehouse door, the second camera at the warehouse door conducts intelligent protective clothing detection on the on-site operator. After passing the detection, the radiation source library warehouse door is allowed to be opened, otherwise a warning of not allowing the radiation source library warehouse door to be opened will be issued and recorded;

[0077] Step 4: The on-site operator enters the radiation source warehouse and places the radiation source items in the inbound inspection area or outbound inspection area. The safety inspection of inbound and outbound radiation source items is carried out through video AI technology. For radiation source items that meet the requirements, they are inbound and outbound, and voice announcements and system platform displays are made; for radiation source items that do not meet the requirements, inbound and outbound are prohibited and they are processed in a timely manner;

[0078] Step 5: After the on-site operators complete the inbound and outbound processes, the on-site operators evacuate from the perimeter gate of the radioactive source storage, the access control unit closes, and the management and control platform unit restarts the defense function of the intrusion detection unit.

[0079] In Step 4, a square marking frame is set as the inbound inspection area, a triangular marking frame is set as the outbound inspection area, and a circular marking frame is set as the storage area inside the radioactive source storage. The safety inspection includes: verifying the packaging, labels, and markings of the radioactive sources, detecting the radiation values of the radioactive source items, ensuring that the actual inbound and outbound radioactive source items correspond to the planned inbound and outbound radioactive source items, and uploading the safety inspection data to the management and control platform unit.

[0080] Based on the camera AI recognition technology, read the markings on the outer shell of the radioactive items, identify the data and material characteristics of the radioactive items, and conduct detection and verification. Complete the outbound inspection and handover, and automatically upload the detection data to the radioactive source management and control platform unit, which facilitates the management and control platform unit to perform electronic process operations and data archiving for the inbound and outbound management. In addition, it is also necessary to conduct boundary supervision on the inbound and outbound operations, delimit the virtual boundary of the radioactive source operation, implement full-process supervision within this area, identify and locate personnel and equipment, and conduct real-time monitoring based on the virtual electronic fence. If the boundary area is exceeded, an alarm will be issued and a prompt will be given in a timely manner.

[0081] 3. Radiation Monitoring of Radioactive Source Storage and Online Patrol Management of Radioactive Source Storage

[0082] The fixed-point radiation detectors installed inside and outside the radioactive source storage, and the mobile radiation detectors of the tracing robots installed inside the radioactive source storage transmit the radiation monitoring data to the management and control platform unit. The management and control platform unit constructs a real-time dynamic radioactive source distribution monitoring map of the radioactive source storage, visually and comprehensively showing the radiation values of the radioactive sources.

[0083] The fixed-point radiation detectors are connected to the analog interface of the management and control platform unit and upload the radiation data to the management and control platform unit. The robots of the mobile radiation detectors of the tracing robots detect the radiation values of each radioactive source pit or radioactive source according to the fixed tracing route and upload the radiation data to the management and control platform unit. The management and control platform unit will monitor the radiation values inside and outside the radioactive source storage in real time and scroll-display the radiation values inside and outside the on-site radioactive source storage through the LED display outside the perimeter wall; the management and control platform unit sets the threshold values of the radiation values inside and outside the radioactive source storage. When the detected radiation value exceeds the threshold, first give a pre-alarm through the management and control platform unit; then the management and control platform unit links to the cameras in the area, locks the viewing angle of the cameras, pops up the images of the cameras and issues an alarm and display. At the same time, prompt the duty personnel to handle it and trigger the delayed trigger program; when the delay time ends, trigger the voice alarm and conduct dynamic display on the LED display. The above process of radiation monitoring management is as Figure 4 shown.

[0084] In addition, the online inspection of the radiation source library adopts a combination of video analysis inspection and robot inspection. Specifically, an online inspection management process for the radiation source library is set up in the control platform unit. As Figure 5 shown, the online inspection management process is used for the online inspection of the radiation source library. After the online inspection management process is started, the control platform unit manages through the following steps:

[0085] Step (1): The tracking robot mobile radiation detector turns on the inspection mode according to the instruction of the control platform unit;

[0086] Step (2): According to the fixed tracking route, the robot of the tracking robot mobile radiation detector detects the radiation value of the radiation source pit and uploads the radiation data to the control platform unit;

[0087] Step (3): The inspection camera set on the robot detects the packaging, labels, and markings of the radiation source items and checks whether the cover plate of the radiation source library and the radiation source seal tank are closed, and uploads the detected information to the control platform unit;

[0088] Step (4): If the radiation value of the radiation source pit exceeds the standard, the control platform unit gives a pre-alarm, and at the same time, it links the cameras in the nearby area, locks the perspective of the cameras, displays the images captured by the cameras on the control platform unit, and judges whether to give an alarm according to the images, and then the robot moves to the next radiation source;

[0089] Step (5): If the radiation value of the radiation source pit does not exceed the standard, the robot directly moves to the next radiation source;

[0090] Step (6): Through the intelligent recognition technology of the cameras set in the radiation source storage room, the environment in the storage room is compared with images. When there are image changes, an alarm will be triggered and the changed images will pop up on the control platform unit.

[0091] The video-assisted inspection and robot self-service inspection methods reduce the time and frequency of radiation source operators contacting radiation sources, improve work efficiency, realize unified inspection of radiation environment monitoring, standardize inspections, and improve inspection efficiency. Through electronic online inspections, electronic inspection reports can be recorded and issued, which is also convenient for issuing annual inspection reports in the later stage.

[0092] 4. Management of Loss or Leakage of Radiation Sources

[0093] The radioactive source library is an application scenario where radioactive sources are fixed. During daily supervision, two problems may occur: the loss of radioactive sources and the leakage of radioactive sources. This invention uses two triggering modes for alarm supervision, namely the intrusion detection triggering mode and the radiation dose algorithm triggering mode. Specifically, a radioactive source loss or leakage management process is set up in the control platform unit. The radioactive source loss or leakage management process is used for the alarm of radioactive source loss or leakage. When the radioactive source loss or leakage management process is started, the control platform unit manages through the following steps:

[0094] Step A: The infrared detector in the radioactive source library warehouse detects the intrusion of personnel. A secondary judgment is made through the camera in the warehouse. At the same time, the camera pushes the image to the control platform unit. The control platform unit conducts an intrusion confirmation. After confirming the intrusion of personnel, the duty personnel confirm again that it is a personnel intrusion or after the delay time is satisfied, an alarm signal and image are sent to the outside, as Figure 6 shown;

[0095] Step B: Take the average value of the dose values generated by the normal storage of radioactive sources within a certain period of time as the reference value. Once the radiation dose value suddenly increases and remains unchanged, the control platform unit gives an alarm reminder of radioactive source leakage. At the same time, it links the camera in the warehouse for confirmation, and makes a secondary judgment based on the image collected by the camera to determine whether there is a leakage and give an alarm. If a leakage is confirmed, the staff will handle it according to the radioactive source accident emergency plan, as Figure 7 shown;

[0096] Step C: Once the radiation dose value suddenly changes and returns to the reference value or the radiation value cannot be detected, the control platform unit gives an alarm reminder of radioactive source loss. At the same time, it links the camera in the warehouse for confirmation, and makes a secondary judgment based on the image collected by the camera to determine whether there is a loss and give an alarm. If a loss is confirmed, the staff will handle it according to the radioactive source accident emergency plan, as Figure 7 shown.

[0097] 5. Automatic defense management of radioactive source library

[0098] The security control areas of the radioactive source library include the perimeter defense area, the outside defense area of the source library, and the inside defense area of the source library. Intrusion detection units are installed in each defense area to achieve real-time detection of intrusions in the whole area. Among them: infrared detectors and infrared cameras are installed around the perimeter wall; an access control unit and an intelligent camera are installed outside the source library to record the entry and exit situation throughout the process; video monitoring units are installed in all rooms inside the source library.

[0099] It automatically enters the deployment mode with the confirmation of the on-duty personnel, the intrusion detection unit is in the deployment state, the door magnetic lock of the access control unit is in the closed state, and the infrared detectors and infrared camera soft perimeters on the surrounding walls of the radiation source warehouse are set to the intrusion detection mode. When someone illegally enters the radiation source warehouse from the wall, the infrared detector and infrared camera soft perimeter functions are triggered to sound an alarm. At the same time, the video surveillance unit in the warehouse enters the environmental monitoring state, with conventional image intrusion detection functions, and performs auxiliary detection of the real-time status in the warehouse. When the status in the warehouse changes, an alarm is sounded.

[0100] The above video data and alarm information are uploaded to the management and control platform unit to realize centralized management, unified viewing, linkage control and intelligent analysis of the radiation source library video and alarm information.

[0101] 6. Emergency management of radioactive source repository accidents

[0102] When sudden radiation accidents or sudden environmental pollution accidents occur, whether necessary and effective emergency actions can be taken quickly is related to protecting the safety of workers, the public and the environment. When the control platform unit detects abnormal radiation values, illegal intrusions, etc., it will trigger corresponding alarms and emergency alarms.

[0103] First, the control platform unit receives the alarm and analyzes the abnormal situation through intelligent analysis. If the abnormal situation can be handled in time, personnel will be arranged to handle it and lift the alarm. If the abnormal situation cannot be handled in time, the emergency response procedure will be initiated; then the emergency response procedure will make emergency calls, including emergency calls from fire and environmental protection departments, emergency calls from government functional departments, and emergency broadcasts to personnel in the storage area; next, an on-site investigation will be conducted to confirm the abnormal situation; finally, a warning will be set up in the area where the abnormal situation occurred and personnel will be evacuated.

[0104] 7. Intelligent report management of radioactive source library

[0105] Annual reports are intelligently generated based on basic data, and the entry and exit, operation and storage records of radioactive sources are electronically recorded to generate data reports. Annual monitoring alarm data is statistically stored and data reports are generated with one click. Equipment operation and fault signals of intrusion detection units, video surveillance units, access control units, etc. are collected and counted to form data reports.

Claims

1. A radioactive source library management system, characterized in that: including an intrusion detection unit, including an infrared detector, an infrared camera, and an emergency alarm device; a video surveillance unit for monitoring both inside and outside the radioactive source storage; a radiation value detection unit, including a fixed-point radiation detector and a tracing robot mobile radiation detector; an access control unit with a face recognition terminal for management and supervision of access; a dynamic display unit, including a display screen, a speaker, and an acoustic-optic alarm installed in the duty room; and a control platform unit, which is respectively connected to the intrusion detection unit, the video surveillance unit, the radiation value detection unit, and the access control unit, and collects data from each unit. The control platform unit processes, fuses, and intelligently analyzes the collected data, and is connected to the dynamic display unit, and provides display and alarm information for the dynamic display unit according to the results of data processing, fusion, and intelligent analysis.

2. The radioactive source library management system according to claim 1, characterized in that: The infrared detector includes: a first infrared detector installed on the outer wall of the radioactive source storage. When someone climbs over the fence and enters the radioactive source storage, the first infrared detector is triggered, and the emergency alarm device issues an alarm message; a second infrared detector installed at the entrance of the radioactive source storage. When someone enters the detection range at the entrance of the storage, the second infrared detector is triggered, and the emergency alarm device issues an alarm message; a third infrared detector installed inside the radioactive source storage. When someone enters the detection range inside the storage, the third infrared detector is triggered, and the emergency alarm device issues an alarm message.

3. The radioactive source library management system according to claim 1, characterized in that: The video surveillance unit includes a first camera installed on the fence of the radioactive source storage, a second camera installed at the entrance of the radioactive source storage, and a third camera installed inside the storage. The video signals captured by each of the above cameras are transmitted to the control platform unit.

4. The radioactive source library management system according to claim 1, wherein: The fixed-point radiation detectors are respectively installed inside and outside the radioactive source storage for detecting whether there is radiation leakage from the radioactive source; The tracing robot mobile radiation detector includes a robot, which is equipped with a radiation monitor, an inspection camera, and a display module. The robot inspects the radiation values of each radioactive source pit or radioactive source, and the display module can display the radiation values detected by the radiation monitor in real time and upload the radiation data to the control platform unit in real time.

5. A management method using the radioactive source library management system as described in claim 4, characterized in that: The control platform unit is provided with a radioactive source inbound and outbound management process, which is used to manage the on-site operators and the radioactive source entering and leaving the radioactive source storage. It includes the following steps: Step 1: The control platform unit starts the inbound and outbound process, and the duty officer makes a confirmation; Step 2: The on-site operator enters the fence gate of the radioactive source storage through the face recognition terminal of the access control unit. The duty officer makes a secondary confirmation. At the same time, the control platform unit controls the intrusion detection unit to be in a disarmed state; Step 3: The on-site operator enters the entrance of the radioactive source storage. The second camera at the entrance of the storage conducts an intelligent protective clothing detection on the on-site operator. If the detection is qualified, the door of the radioactive source storage is allowed to be opened. Otherwise, a warning of not allowing the door of the radioactive source storage to be opened is issued and recorded; Step 4: The on-site operators enter the radioactive source storage and place the radioactive source items in the inbound inspection area or outbound inspection area. The safety inspection of the inbound and outbound radioactive source items is carried out through video AI technology. For the radioactive source items that meet the requirements, they are allowed to enter and leave the warehouse, and voice announcements and system platform displays are made; for the radioactive source items that do not meet the requirements, they are prohibited from entering and leaving the warehouse and are processed in a timely manner. Step 5: After the on-site operators complete the inbound and outbound procedures, the on-site operators leave the perimeter gate of the radioactive source warehouse, the access control unit closes, and the control platform unit restarts the defense function of the intrusion detection unit.

6. The management method according to claim 5, characterized in that: The safety inspection in Step 4 includes: verifying the packaging, labels, and markings of the radioactive sources, detecting the radiation values of the radioactive source items, ensuring that the actual inbound and outbound radioactive source items correspond to the planned inbound and outbound radioactive source items, and uploading the safety inspection data to the control platform unit.

7. The management method according to claim 5, characterized in that: An online inspection management process is provided in the control platform unit. The online inspection management process is used for the online inspection of the radioactive source warehouse. When the online inspection management process is started, the control platform unit manages through the following steps: Step (1): The tracking robot mobile radiation detector turns on the inspection mode according to the instructions of the control platform unit. Step (2): Along the fixed tracking route, the robot of the tracking robot mobile radiation detector detects the radiation value of the radioactive source pit and uploads the radiation data to the control platform unit. Step (3): The inspection camera installed on the robot detects the packaging, labels, and markings of the radioactive source items and checks whether the cover plate of the radioactive source warehouse and the radioactive source sealed tank are closed, and uploads the detected information to the control platform unit. Step (4): If the detected radiation value of the radioactive source pit exceeds the standard, the control platform unit issues a pre-alarm, and at the same time, it links to the cameras in the nearby area, locks the viewing angle of the cameras, displays the images captured by the cameras on the control platform unit, and determines whether to issue an alarm based on the images, and then the robot moves to the next radioactive source. Step (5): If the detected radiation value of the radioactive source pit does not exceed the standard, the robot directly moves to the next radioactive source. Step (6): The intelligent recognition technology of the cameras installed in the radioactive source warehouse is used to compare the images of the warehouse environment. When there are image changes, an alarm will be triggered and the changed images will pop up on the control platform unit.

8. The management method according to claim 5, characterized in that: A radioactive source loss or leakage management process is provided in the control platform unit. The radioactive source loss or leakage management process is used for the alarm of radioactive source loss or leakage. When the radioactive source loss or leakage management process is started, the control platform unit manages through the following steps: Step A: The infrared detector in the radioactive source warehouse detects a personnel intrusion, and a secondary judgment is made through the cameras in the warehouse. At the same time, the cameras push the images to the control platform unit. The control platform unit confirms the intrusion. After confirming the personnel intrusion, the duty personnel confirm again whether it is a personnel intrusion or after the delay time is satisfied, and send an alarm signal and images to the outside. Step B: Take the average value of the dose values generated during the normal storage of the radiation source within a certain period of time as the reference value. Once the radiation dose value suddenly increases and remains unchanged, the control platform unit gives an alarm reminder of radiation source leakage, and at the same time activates the cameras in the warehouse for confirmation. Based on the images collected by the cameras, re-judge whether leakage and alarm occur. If leakage is confirmed, the staff shall handle it according to the radiation source accident emergency plan. Step C: Once the radiation dose value suddenly changes and returns to the reference value or the radiation value cannot be detected, the control platform unit gives an alarm reminder of radiation source loss, and at the same time activates the cameras in the warehouse for confirmation. Based on the images collected by the cameras, re-judge whether loss and alarm occur. If loss is confirmed, the staff shall handle it according to the radiation source accident emergency plan.

9. The management method according to claim 8, wherein: The control platform unit generates an annual report on the data of the management system.

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