Radioactive material monitoring device, system and monitoring method thereof

Abstract

The present invention discloses a radioactive material monitoring device, system and monitoring method thereof. The radioactive material monitoring device includes a detector, a locator and a control module. The detector is connected to a first rotating mechanism. The detector can detect radioactive materials within a predetermined range from itself and generate a detection signal. The locator can locate the rotational orientation of the detector. The control module communicates with the detector and the locator, and determines whether there is radioactive material within the predetermined range according to whether the detection signal exceeds a threshold value, and determines the orientation of the radioactive material detected by the detector according to the rotational orientation. The radioactive material monitoring device disclosed in the present invention can monitor radioactive materials and determine their orientation, and can monitor radioactive materials in real time and dynamically.

Description

Technical Field

[0001] The present invention belongs to the technical field of radioactive monitoring, and in particular relates to a radioactive material monitoring device, system and monitoring method thereof. Background Art

[0002] Radioactive materials are dangerous and their management is relatively strict. For the purpose of public safety, it is usually necessary to monitor the presence of radioactive materials at the entrances of customs, airports, large public venues, etc., and use radioactive material monitoring devices to monitor pedestrians, moving vehicles, containers, etc.

[0003] However, the existing radioactive material monitoring devices can usually only monitor radioactive materials in a certain direction. When the radioactive materials are in a moving state and their directions change, the changes in the directions of the radioactive materials cannot be monitored in time.

[0004] Therefore, there is an urgent need for a radioactive material monitoring device that can monitor the position of radioactive materials in real time and dynamically. Summary of the invention

[0005] The embodiments of the present invention provide a radioactive material monitoring device, system and monitoring method thereof, aiming to be able to monitor the position of radioactive materials in real time and dynamically.

[0006] In the first aspect, the present invention provides a radioactive material monitoring device, comprising: a detector connected to a first rotating mechanism, the detector being capable of detecting radioactive material within a predetermined range from itself and generating a detection signal; a locator being capable of locating the rotational orientation of the detector; and a control module communicating with the detector and the locator, judging whether there is radioactive material within the predetermined range based on whether the detection signal exceeds a threshold value, and determining the orientation of the radioactive material detected by the detector based on the rotational orientation.

[0007] According to one aspect of the present invention, it further includes: a first shell, which is a cylindrical structure with a hollow space; wherein the detector is rotatably connected to one end of the first shell through a first rotating mechanism, and the first rotating mechanism is arranged in the hollow space of the first shell.

[0008] According to one aspect of the present invention, it further includes: a top cover, which is rotatably connected to the end of the detector facing away from the first shell through a second rotating mechanism, and the second rotating mechanism is arranged in the hollow space of the first shell; a direction indicator, which is integrated in the top of the top cover and can indicate the location of the radioactive material.

[0009] According to one aspect of the present invention, it further includes: a video capture module, which is arranged on the peripheral side of the top cover, and the video capture module is used to capture an image of the location of the radioactive material.

[0010] According to one aspect of the present invention, it further includes: an alarm, which is integrated in the top cover, and the alarm can send an alarm signal when the detector detects radioactive substances.

[0011] According to one aspect of the present invention, it further includes: a movable chassis, which is arranged at an end of the first shell away from the detector, and the chassis has a accommodating cavity; a mobile control module, which is arranged in the accommodating cavity of the movable chassis, and the mobile control module is communicatively connected with the control module. The mobile control module controls the movable chassis to drive the radioactive material monitoring device to move toward the radioactive material according to the location of the radioactive material.

[0012] According to one aspect of the present invention, it further includes: a second shell, which is a cylindrical structure with a accommodating space, and one end of the second shell is connected to the first shell; a movable chassis, which is arranged at the end of the second shell away from the detector, and the movable chassis has a accommodating cavity; a mobile control module, which is arranged in the accommodating cavity of the movable chassis, and the mobile control module is communicatively connected with the control module, and the mobile control module controls the movable chassis to drive the radioactive material monitoring device to move toward the radioactive material according to the location of the radioactive material.

[0013] According to one aspect of the present invention, the mobile control module includes a drive control module and a navigation module, and the drive control module is communicatively connected to the navigation module; the navigation module is used to plan the path of the radioactive material monitoring device; the drive control module is used to control the movable chassis to drive the radioactive material monitoring device to move according to the path planned by the navigation module.

[0014] According to one aspect of the present invention, the control module includes a first control unit, a second control unit and a motor drive unit, and the second control unit is communicatively connected with the first control unit and the motor drive unit; the second control unit is used to collect the radiation intensity and the orientation of the radioactive material detected by the detector; the first control unit is used to determine whether there is radioactive material within a predetermined range according to whether the radiation intensity collected by the second control unit exceeds a threshold value, and control the mobile control module and the video capture module according to the orientation information of the radioactive material, and the first control unit is arranged in the accommodating cavity of the movable chassis; the motor drive unit is used to control the rotation of the first rotating mechanism and the second rotating mechanism, and obtain the rotation orientation information of the detector.

[0015] According to one aspect of the present invention, the first control unit is disposed in the accommodation cavity of the movable chassis, the second control unit is disposed in the accommodation space of the second shell, and the motor drive unit is disposed in the accommodation space of the second shell.

[0016] In a second aspect, the present invention provides a radioactive material monitoring system, comprising: a radioactive material monitoring device according to any of the above embodiments; and a remote operation module, which is communicatively connected to a control module of the radioactive material monitoring device and is used for remotely monitoring and controlling the radioactive material.

[0017] In a third aspect, the present invention provides a method for monitoring radioactive materials, comprising: a detector rotates to detect radioactive materials and sends a detection signal; monitoring the rotational orientation of the detector; and determining the orientation of the radioactive materials based on the detection signal and the rotational orientation.

[0018] According to one aspect of the present invention, it further includes: starting a following mode, planning a path according to the location of the radioactive material, and controlling the detector to move toward the radioactive material.

[0019] According to one aspect of the present invention, it further includes: in the following mode, when the detector cannot detect any radioactive material, the following mode is turned off and the detector is controlled to return to the set position.

[0020] In the embodiment of the present invention, the detector of the radioactive material monitoring device rotates under the drive of the first rotating mechanism, and can detect radioactive materials in a predetermined range of various orientations in real time. The rotation orientation of the detector can be located by the positioner. The control module determines whether there is radioactive material in the predetermined range according to whether the detection signal of the detector exceeds the threshold, and determines the orientation of the radioactive material detected by the detector according to the rotation orientation. Since the detector is in a continuous rotating state driven by the first rotating mechanism, even if the radioactive material is in a moving state and the orientation changes, the radioactive material monitoring device of this embodiment can timely monitor the radioactive material and determine its orientation, thereby realizing real-time and dynamic monitoring of the radioactive material. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments of the present invention are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 is a structural block diagram of a radioactive material monitoring device provided by an embodiment of the present invention;

[0023] Figure 2 is a schematic structural diagram of a radioactive material monitoring device provided by an embodiment of the present invention;

[0024] Figure 3 is a structural block diagram of a radioactive material monitoring system provided by an embodiment of the present invention;

[0025] Figure 4 It is a flow chart of a radioactive material monitoring method provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0026] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the detailed description below, many specific details are proposed in order to provide a comprehensive understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by illustrating examples of the present invention. In the drawings and the following description, at least part of the known structures and technologies are not shown in order to avoid unnecessary ambiguity of the present invention; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

[0027] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the embodiments of the present invention. In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0028] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The embodiments will be described in detail below in conjunction with the accompanying drawings.

[0029] In order to better understand the present invention, Figure 1 to Figure 4 The radioactive material monitoring device, system and monitoring method according to the present invention are described in detail.

[0030] Please also read Figure 1 and Figure 2 , Figure 1 is a structural block diagram of a radioactive material monitoring device provided by an embodiment of the present invention; Figure 21 is a schematic diagram of the structure of a radioactive material monitoring device provided by an embodiment of the present invention. The radioactive material monitoring device 10 includes a detector 101, a locator 102 and a control module 103. The detector 101 is connected to a first rotating mechanism 104, and can detect radioactive materials within a predetermined range from itself and generate a detection signal through the rotation setting of the first rotating mechanism 104. The locator 102 can locate the rotational orientation of the detector 101. The control module 103 is connected to the detector 101 and the locator 102 in communication, and can receive the detection signal of the detector 101 and the information of the rotational orientation of the detector 101 located by the locator 102, and judge whether the radioactive material is detected according to whether the detection signal exceeds the threshold, and determine the orientation of the detected radioactive material according to the rotational orientation. In one embodiment, the detection signal may include the radiation intensity of the radioactive material. In another embodiment, the detection signal may include the radiation intensity and the type of nuclide of the radioactive material.

[0031] In this embodiment, the detector 101 of the radioactive material monitoring device 10 rotates under the drive of the first rotating mechanism 104, and can detect radioactive materials in a predetermined range of various orientations in real time. The rotation orientation of the detector 101 can be located by the locator 102. The control module 103 determines whether there is radioactive material in the preset range according to whether the detection signal of the detector 101 exceeds the threshold, and can determine the orientation of the radioactive material detected by the detector 101 according to the rotation orientation of the detector 101 located by the locator 102. Since the detector 101 is in a continuous rotating state driven by the first rotating mechanism 102, even if the radioactive material is in a moving state and the orientation changes, the radioactive material monitoring device 10 of this embodiment can timely monitor the radioactive material and determine its orientation, thereby realizing real-time and dynamic monitoring of the radioactive material.

[0032] It should be noted that the locator 102 in this embodiment can be any device that can measure the rotation angle of the detector 1, for example, it can be an angle sensor or an encoder. The locator 102 can be arranged on the detector 101, and can also be arranged on the first rotating mechanism 104. When the locator 102 is an encoder, the locator 102 can be located at one end of the motor, and the present invention does not limit the specific setting position of the locator 102. The locator 102 can feed back the rotation azimuth signal to the control module 103 (for example, the motor drive unit 1033 therein). When there is radioactive material around the detector 101, the detection signal of the detector 101 will continue to change during the rotation detection process, and the detection signal will be enhanced at the position where the radioactive material is located. The control module 103 can determine the presence of radioactive material and the position of the radioactive material according to the change of the detection signal and the rotation azimuth information located by the locator 102.

[0033] In some optional embodiments, the radioactive material monitoring device 10 further includes a first shell 106, which is a cylindrical structure with a hollow space, and the detector 101 is rotatably connected to one end of the first shell 106 through a first rotating mechanism 104, and the first rotating mechanism 104 is disposed in the hollow space of the first shell 106 to protect the rotating mechanism 104. The present invention does not limit the specific location of the control module 103.

[0034] Optionally, the radioactive material monitoring device of this embodiment further includes a top cover 107 and a direction indicator 1071. The top cover 107 is rotatably connected to the end of the detector 101 away from the first shell 106 through the second rotating mechanism 108, and the second rotating mechanism 108 is arranged in the first shell 106 to protect the second rotating mechanism 108. The direction indicator 1071 is integrated on the top of the top cover 107 and can indicate the location of the radioactive material. The direction indicator 1071 indicates the location of the radioactive material, which facilitates the inspector to obtain the location of the radioactive material in real time and track it. The direction indicator 1071 can be a display screen with a display function integrated on the top of the top cover 107. In an optional implementation, after determining the location of the radioactive material, the control module 103 can control the display screen to display a mark pointing to the location of the radioactive material. In another optional implementation, after determining the location of the radioactive material, the control module 103 may control the second rotating mechanism 108 to drive the top cover 107 to rotate, so that the mark displayed on the display screen points to the location of the radioactive material.

[0035] Optionally, the radioactive material monitoring device 10 of this embodiment may further include a video capture module 1072, which is arranged on the peripheral side of the top cover 107 and can capture images of the location of the radioactive material, so as to facilitate further determination of the specific location of the radioactive material through the images of the location of the radioactive material. It is understandable that after determining the location of the radioactive material, the control module 103 can control the second rotating mechanism 108 to drive the top cover 107 to rotate, so that the video capture module 1072 rotates to the location of the radioactive material and captures the location. Through the captured images, it is convenient for inspectors to obtain environmental information about the location of the radioactive material and promptly discover suspicious persons carrying radioactive materials.

[0036] Optionally, the radioactive material monitoring device 10 of this embodiment may further include an alarm (not shown in the figure), which may be integrated into the top cover 107, and the alarm is in communication with the control module 103, and can send an alarm signal when the detector 101 detects radioactive material. The present invention does not limit the specific type of the alarm, for example, it may include an alarm light and / or a buzzer to attract the attention of relevant personnel through light signals and / or sound signals.

[0037] Optionally, the radioactive material monitoring device 10 of this embodiment may further include a movable chassis 105 and a mobile control module 109. The movable chassis 105 is disposed at one end of the first shell 106 away from the detector 101, and the movable chassis 105 can drive the entire radioactive material monitoring device 10 to move, and the movable chassis 105 has a receiving cavity. The mobile control module 109 can be disposed in the receiving cavity of the movable chassis 105, and the mobile control module 109 is communicatively connected with the control module 103, and the control module 103 can control the radioactive material monitoring device 10 to start the following mode, and control the movable chassis 105 according to the position of the radioactive material through the mobile control module 109 to drive the radioactive material monitoring device 10 to move toward the radioactive material. The mobile control module 109 may include a drive control module 1091 and a navigation module 1092, and the drive control module 1091 is communicatively connected with the navigation module 1092. The navigation module 1092 is used to plan the path of the radioactive material monitoring device 10 so that the radioactive material monitoring device 10 can move along the optimal path and avoid obstacles during the movement. The drive control module 1091 controls the movable chassis 105 to drive the radioactive material monitoring device 10 to move according to the path planned by the navigation module 1092, so as to track the radioactive material. During the process of the radioactive material monitoring device 10 following the movement of the radioactive material, if no radioactive material is detected, the control module 3 can be used to control the radioactive material monitoring device 10 to turn off the following mode and control the radioactive material monitoring device 10 to return to the set position, which can be, for example, the initial position of the radioactive material monitoring device 10.

[0038] Optionally, the radioactive material monitoring device 10 may further include a second shell 110, which is a cylindrical structure with a storage space, one end of the second shell 110 is connected to the movable chassis 105, and the other end is connected to the first shell 106. The second shell 110 and the movable chassis 105 and the first shell 106 may be detachably connected, so as to facilitate the disassembly and assembly of the entire radioactive material monitoring device 10. Figure 2 The case including the first shell 106 and the second shell 110 is shown, while the case including only the first shell 106 is not described in a separate figure because only one shell is omitted, and the principle is similar.

[0039] The control module 103 may include a first control unit 1031, a second control unit 1032 and a motor drive unit 1033, wherein the second control unit 1032 is in communication connection with the first control unit 1031 and the motor drive unit 1033. The second control unit 1032 may collect the radiation intensity of the radioactive material detected by the detector 101 and the orientation of the radioactive material, and the motor drive unit 1033 is used to control the rotation of the first rotating mechanism 104 and the second rotating mechanism 108, and obtain the rotation orientation information of the detector 101, and send the rotation orientation information to the second control unit 1032. The second control unit 1032 may send a signal including the orientation information of the radioactive material to the first control unit 1031, and the first control unit 1031 may determine whether there is a radioactive material in a predetermined range according to whether the radiation intensity collected by the second control unit exceeds a threshold value, and control the mobile control module 109 and the video capture module 1072 according to the orientation information of the radioactive material. The second control unit 1032 and the motor driving unit 1033 may both be disposed in the accommodation space of the second shell 110 , and the first control unit 1031 may be disposed in the accommodation cavity of the movable chassis 105 .

[0040] It should be noted that the movable chassis 105, the second shell 110, the first shell 106, the detector 101 and the top cover 107 can be coaxially arranged to facilitate the overall aesthetics and stability of the radioactive material monitoring device, and the detector 101 and the top cover 107 can rotate around the axis of the radioactive material monitoring device 10. In addition, the radioactive material monitoring device 10 may include an external power supply interface and / or a battery module to power the entire device through an external power supply and / or a battery module. The battery module can be arranged in the accommodating cavity of the movable chassis 105.

[0041] The specific use process of the above-mentioned radioactive material monitoring device 10 is as follows:

[0042] First, place the radioactive material monitoring device 10 on the monitoring channel, turn it on and perform self-test to obtain the current configuration information. After that, the radioactive material monitoring device 10 starts working, the detector 101 starts to rotate, and continuously monitors whether there is radioactive material within the predetermined range. When radioactive material is detected, the orientation of the radioactive material is determined. The image of the orientation can also be captured and recorded by the video capture module 1072. At the same time, the alarm sends an alarm message, and the direction indicator 1071 indicates the orientation information. The detector 101 continuously monitors and updates the orientation information in real time. Furthermore, the following mode can be turned on, and the movable chassis 105 drives the entire radioactive material monitoring device 10 to follow the movement of the radioactive material. In the following mode, when no radioactive material is detected, the following mode is automatically exited and returned to the set position.

[0043] The present invention also provides an embodiment of a radioactive material monitoring system, please continue to refer to Figure 3 As shown, Figure 3 It is a structural block diagram of a radioactive material monitoring system provided by an embodiment of the present invention. The radioactive material monitoring system includes a radioactive material monitoring device 10 and a remote operation module 20, wherein the radioactive material monitoring device 10 can be the radioactive material monitoring device 10 of any of the above embodiments, the remote operation module 20 is connected in communication with the control module 103, and the remote operation module 20 is used to remotely monitor and control the radioactive material monitoring device 10. The remote operation module 20 may include a display device and a handheld terminal, and the information monitored by the radioactive material monitoring device, such as the type information and orientation information of the radioactive material and the image captured by the video capture module, can be displayed in real time by the display device to realize remote monitoring of the monitoring structure. The handheld terminal can send instructions to the control module 103 to control the various modules and devices of the radioactive material monitoring device 10, for example, an instruction to control the radioactive material monitoring device 10 to stop tracking the radioactive material, so as to realize remote control of the radioactive material monitoring device 10.

[0044] Since the embodiment of the present invention includes the radioactive substance monitoring device 10 of the above embodiment, it has the same beneficial effects as the radioactive substance monitoring device 10 of the above embodiment, which will not be described in detail herein.

[0045] The present invention also provides an embodiment of a method for monitoring radioactive substances, please continue to refer to Figure 4 As shown, Figure 4 1 is a flow chart of a radioactive material monitoring method provided by an embodiment of the present invention. The radioactive material monitoring method comprises the following steps:

[0046] Step 401: The detector rotates to detect radioactive substances and sends a detection signal.

[0047] Step 402, monitoring the rotational orientation of the detector.

[0048] Step 403, determining the orientation of the radioactive material according to the detection signal and the rotation orientation.

[0049] In this embodiment, the detector 101 rotates to detect radioactive materials in various directions and sends detection signals, and the change of the detection signals can be obtained. When the change of the detection signal is the largest, the detector 101 rotates to the direction where the radioactive material is located. By monitoring the rotation direction of the detector 101 and combining the change of the detection signal, the direction of the radioactive material can be determined. Through this radioactive material monitoring method, the direction of the radioactive material can be obtained in real time.

[0050] In some optional embodiments, the radioactive material monitoring method may further include: starting a follow-up mode, planning a path according to the location of the radioactive material, and controlling the detector 101 to move toward the radioactive material. For example, the detector 101 may move from the initial position where the detector 101 starts monitoring toward the location of the radioactive material. In these optional embodiments, by starting the follow-up mode, the detector 101 may move toward the radioactive material according to the planned path, and the pre-planned path may enable the detector 101 to select the optimal path and avoid obstacles during the movement.

[0051] In some optional embodiments, it may also include: in the following mode, when the detector 101 cannot detect radioactive materials, the following mode is turned off, the detector 101 is controlled to return to the initial position, and the detector 101 may also be controlled to return to other set positions. In these embodiments, when the detector 101 cannot detect radioactive materials during the process of following radioactive materials, the following mode may be automatically turned off and the detector 101 may return to the initial position for the convenience of unified management. It is understandable that before returning to the initial position, path planning may also be performed to return to the initial position according to the planned path.

[0052] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A radioactive material monitoring device, characterized in that: include: A detector connected to the first rotating mechanism, the detector being capable of detecting radioactive materials within a predetermined range from the detector and generating a detection signal; A positioner capable of locating the rotational orientation of the detector; a control module, communicating with the detector and the locator, determining whether there is radioactive material within the predetermined range according to whether the detection signal exceeds a threshold, and determining the orientation of the radioactive material detected by the detector according to the rotation orientation; The first shell is a cylindrical structure with a hollow space; wherein the detector is rotatably connected to one end of the first shell through the first rotating mechanism, and the first rotating mechanism is arranged in the hollow space of the first shell; a top cover, rotatably connected to an end of the detector away from the first shell through a second rotating mechanism, wherein the second rotating mechanism is disposed in the hollow space of the first shell; A direction indicator, integrated on the top of the top cover, capable of indicating the location of the radioactive material; A movable chassis is arranged at an end of the first shell away from the detector, and the chassis has a receiving cavity.

2. The radioactive material monitoring device according to claim 1, characterized in that: Further including: A video capture module is arranged on the peripheral side of the top cover, and the video capture module is used to capture an image of the location of the radioactive material.

3. The radioactive material monitoring device according to claim 2, characterized in that: Further including: An alarm is integrated in the top cover, and the alarm can send an alarm signal when the detector detects the radioactive material.

4. The radioactive material monitoring device according to claim 3, characterized in that: Further including: A mobile control module is arranged in the accommodating cavity of the movable chassis. The mobile control module is communicatively connected with the control module. The mobile control module controls the movable chassis to drive the radioactive material monitoring device to move toward the radioactive material according to the location of the radioactive material.

5. The radioactive material monitoring device according to claim 3, characterized in that: Further including: The second shell is a cylindrical structure with a containing space, and one end of the second shell is connected to the first shell; A movable chassis, the movable chassis is arranged at an end of the second housing away from the detector, and the movable chassis has a receiving cavity; A mobile control module is arranged in the accommodating cavity of the movable chassis. The mobile control module is communicatively connected with the control module. The mobile control module controls the movable chassis to drive the radioactive material monitoring device to move toward the radioactive material according to the location of the radioactive material.

6. The radioactive material monitoring device according to claim 4 or 5, characterized in that: The mobile control module includes a driving control module and a navigation module, and the driving control module is communicatively connected with the navigation module; The navigation module is used to plan the path of the radioactive material monitoring device; The driving control module is used to control the movable chassis to drive the radioactive material monitoring device to move according to the path planned by the navigation module.

7. The radioactive material monitoring device according to claim 6, characterized in that: The control module includes a first control unit, a second control unit and a motor drive unit, wherein the second control unit is communicatively connected with the first control unit and the motor drive unit; The second control unit is used to collect the radiation intensity of the radioactive material and the position of the radioactive material detected by the detector; The first control unit is used to determine whether there is radioactive material in the predetermined range according to whether the radiation intensity collected by the second control unit exceeds a threshold, and control the mobile control module and the video capture module according to the orientation information of the radioactive material; The motor drive unit is used to control the rotation of the first rotating mechanism and the second rotating mechanism, and obtain the rotational orientation information of the detector.

8. The radioactive material monitoring device according to claim 7, characterized in that: The first control unit is disposed in the accommodating cavity of the movable chassis, the second control unit is disposed in the accommodating space of the second shell, and the motor drive unit is disposed in the accommodating space of the second shell.

9. A radioactive material monitoring system, characterized in that: include: The radioactive material monitoring device according to any one of claims 1 to 8; A remote operation module is communicatively connected with the control module of the radioactive material monitoring device and is used for remotely monitoring and controlling the radioactive material.

10. A method for monitoring radioactive substances, characterized in that: Applicable to the radioactive material monitoring device as claimed in claim 1, the radioactive material monitoring method comprising: The detector rotates to detect radioactive materials and sends detection signals; monitoring the rotational orientation of the detector; Determining the orientation of the radioactive material according to the detection signal and the rotation orientation; According to the orientation of the radioactive material, the second rotating mechanism is controlled to drive the top cover to rotate, and the direction indicator on the top of the top cover indicates the orientation information.

11. The method for monitoring radioactive substances according to claim 10, characterized in that: Further including: The following mode is turned on, a path is planned according to the location of the radioactive material, and the detector is controlled to move toward the radioactive material.

12. The radioactive material monitoring method according to claim 11, characterized in that: Further including: In the following mode, when the detector cannot detect any radioactive material, the following mode is turned off and the detector is controlled to return to a set position.

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