An intelligent activity meter calibration device and method

Abstract

The present invention relates to an intelligent activity meter calibration device and method. The intelligent activity meter calibration device at least includes: a shielding part, a transport part and a general control part. The shielding part can store a standard bottle containing a radioactive source and shield the radioactive source to prevent the radioactive source from causing harm to the health of the calibration personnel. The transport part can transfer the standard bottle between the shielding part and the calibration area of the activity meter to be calibrated. The general control part can at least control the movement of the transport part. In the case that the activity meter to be calibrated can measure the radioactive source in the standard bottle and send a measurement value corresponding to the measurement to the general control part, the general control part can transfer the standard bottle containing the radioactive source to the calibration area of the activity meter to be calibrated through the transport part, and generate a calibration report of the activity meter to be calibrated based on the measurement value, so as to realize automatic calibration of the activity meter to be calibrated.

Description

Technical Field

[0001] The present invention relates to the technical field of nuclear monitoring instruments, and in particular to an intelligent activity meter calibration device and method. Background Art

[0002] Medical activity meters are commonly used in nuclear medicine to measure radionuclide activity, primarily for accurately measuring the activity of short-lived and ultra-short-lived artificial radionuclides in clinical diagnosis and treatment. The calibration of medical activity meters has three key characteristics. The first is that they are mandatory instruments. Because they are crucial to patient life and the safety of national healthcare, they are subject to mandatory calibration according to the "Detailed Catalogue of Working Measuring Instruments Subject to Compulsory Verification of the People's Republic of China." Calibration must strictly adhere to the requirements of JJG 377-2019, "Calibration Procedures for Radioactivity Meters." Calibration intervals generally do not exceed 24 months. The second key characteristic is that the activity of the standard source used during calibration is relatively high. For example, the activity of the standard source typically ranges from 100 microcuries to 5 millicuries, exceeding the exemption level. Calibrators must observe necessary safety precautions during operation, adhering to the principles of radiation protection optimization and personal dose limits, while also monitoring and limiting personal radiation exposure. The third characteristic is the rapid growth of activity meter calibration volume. With the rapid development of nuclear medicine, the volume of radioactivity meter calibration business is continuously increasing.

[0003] Currently, in the medical industry, medical activity meters are still mainly calibrated manually, that is, the calibration personnel manually remove and place the radioactive source, transcribe data, calculate data and issue certificates, so the detection cycle of the above calibration work is long. At the same time, not only is the quality of the above calibration results closely related to the operating level and operating status of the calibration personnel, but there is also a safety risk of radiation exposure to the radioactive source during the process of removing and placing the radioactive source, and there is also a risk of leakage of the radioactive source. Based on the characteristics of the calibration of medical activity meters and the existing calibration methods, it is urgent to apply automation technology to replace manual labor to complete a large amount of simple and repetitive calibration work, thereby shortening the detection cycle of the calibration work and controlling the contact time between the calibration personnel and the radioactive source. In addition, most commercial medical radioactivity meters on the market have the function of communicating through a serial port, so the data of the activity meter can be viewed on the computer, etc., which also provides a basis for the periodic traceability of the calibration data of the activity meter. In summary, the existing technology mainly uses manual methods to calibrate activity meters. However, the above-mentioned manual calibration method has the following disadvantages: 1) Manual calibration poses a potential threat to the health of the calibration personnel: for example, in the calibration process of the activity meter, the calibration personnel need to use three medical short-half-life radionuclides, Tc-99m, I-131 and F-18, and the activity values of the above-mentioned radionuclides are between 100 microcuries and 5 millicuries, that is, the activity values of the above-mentioned radionuclides are relatively high, and thus the above-mentioned radionuclides pose a potential threat to the health of the calibration personnel; 2) The detection cycle of manual calibration is long: because the calibration personnel need to manually replace the radioactive source during the calibration process, or The manual verification process involves transcribing data, analyzing data, and producing certificates. Therefore, a skilled verification technician can only complete the verification of eight activity meters in a day. This ultimately results in a long detection cycle for activity meters when the workload is large. 3) The degree of electronicization of verification data is low: After the verification technician manually completes the verification of the activity meter, he or she can only issue a paper certificate or electronic certificate based on the verification results of that time, and cannot trace and monitor the verification data of the same instrument (such as an activity meter) over a long period of time. Therefore, it is necessary to improve the shortcomings of the existing technology.

[0004] The Chinese patent document with publication number CN201210253398.0 discloses an electric energy meter calibration system and an electric energy meter calibration robot. The calibration robot includes a chassis, a manipulator and a robotic arm. The working process of the calibration robot is as follows: the electric energy meter turnover box is placed on the chassis through the electric energy meter turnover box pick-up and placement mechanism, and then the manipulator is controlled by the robotic arm to take the electric energy meter out of the electric energy meter turnover box and place it in the electric energy meter calibration station for calibration, and after the calibration is completed, the electric energy meter is put back into the electric energy meter turnover box. This invention improves the calibration speed of the electric energy meter and reduces the workload of the calibration personnel. However, the electric energy meter calibration system / electricity meter calibration robot still requires manual operation for the acquisition and calculation of calibration data, so the degree of automation of the electric energy meter calibration system / electricity meter calibration robot still needs to be improved.

[0005] In addition, on the one hand, there are differences in understanding among those skilled in the art; on the other hand, the applicant studied a large number of documents and patents when making the present invention, but due to space limitations, not all details and contents are listed in detail. However, this does not mean that the present invention does not have the characteristics of these prior arts. On the contrary, the present invention already has all the characteristics of the prior art, and the applicant reserves the right to add relevant prior art to the background technology. Summary of the Invention

[0006] The existing technology mainly uses manual methods to calibrate the activity meter. However, the above manual calibration method has the following disadvantages: 1) Manual calibration poses a potential threat to the health of the calibration personnel: for example, in the calibration process of the activity meter, the calibration personnel need to use three medical short half-life radionuclides, Tc-99m, I-131 and F-18, and the activity values of the above radionuclides are between 100 microcuries and 5 millicuries, that is, the activity values of the above radionuclides are relatively high, and thus the above radionuclides pose a potential threat to the health of the calibration personnel; 2) The detection cycle of manual calibration is long: because the calibration personnel need to manually replace the radioactive source during the calibration process, or 1) The calibration personnel need to perform operations such as transcribing data, analyzing data and making certificates. Therefore, a skilled calibration personnel can only complete the calibration of eight activity meters in a day. As a result, when the workload of the activity meter calibration is large, the detection cycle of the activity meter is long; 2) The degree of electronicization of calibration data is low: after the calibration personnel complete the calibration of the activity meter manually, they can only issue a paper certificate or an electronic certificate based on the calibration result of that time, and cannot trace and monitor the calibration data of the same instrument (such as the activity meter) over a long period of time.

[0007] In view of the shortcomings of the prior art, the present invention provides an intelligent activity meter calibration device and method. This device is mainly used to solve the problem of automatic calibration of working-level medical radioactivity meters.

[0008] The intelligent activity meter calibration device at least includes: a shielding part, a transport part and a general control part. The shielding part can store standard bottles containing radioactive sources and shield the radioactive sources to prevent the radioactive sources from causing harm to the health of the calibration personnel. The transport part can transfer the standard bottles between the shielding part and the calibration area of the activity meter to be calibrated. The general control part can at least control the movement of the transport part. In the case that the activity meter to be calibrated can measure the radioactive source in the standard bottle and send the measurement value corresponding to the measurement to the general control part, the general control part can transfer the standard bottle containing the radioactive source to the calibration area of the activity meter to be calibrated through the transport part, and generate a calibration report of the activity meter to be calibrated based on the measurement value, so as to realize automatic calibration of the activity meter to be calibrated.

[0009] Through the above configuration, the present invention complies with the requirements of JJG 377-2019 "Radioactivity Meter Calibration Procedure" regarding calibration items, calibration methods and calibration result processing, and utilizes robotic technology, sensor positioning technology and serial communication technology to realize the automation of the entire calibration process of the medical activity meter (the entire calibration process includes replacing the radioactive source, data reading and data analysis, original records and automatic generation of calibration certificates, etc.), thereby effectively shortening the detection cycle of the medical activity meter, improving the digitization level of calibration data, and reducing the harm of the radioactive source to the health of calibration personnel.

[0010] According to a preferred embodiment, the transfer unit includes at least a guide rail, a robotic arm, and a robotic gripper. The central control unit is capable of controlling the guide rail, robotic arm, and robotic gripper. The guide rail, robotic arm, and robotic gripper are capable of receiving motion commands from the central control unit. Based on the motion commands, the guide rail, robotic arm, and robotic gripper are capable of moving to transfer the standard vial containing the radioactive source from the shielded portion to the calibration area of the activity meter to be calibrated.

[0011] According to a preferred embodiment, the transport unit can further include a detection tool. The detection tool can serve as a support for the standard bottle containing the radioactive source, so that the mechanical gripper can move the standard bottle containing the radioactive source by moving the detection tool.

[0012] According to a preferred embodiment, the mechanical gripper is provided with a laser transmitter, and a laser receiver is provided on the work surface where the activity meter to be calibrated is located, so that the laser transmitter and the laser receiver are configured to detect the verticality of the detection tooling during the process of being moved by the mechanical gripper.

[0013] According to a preferred embodiment, at least one vertical detection hole is provided on the skirt structure of the detection tooling, and the laser emitted by the laser transmitter can pass through the vertical detection hole and be received by a laser receiver located on the work surface.

[0014] According to a preferred embodiment, an image acquirer is provided at the end of the robotic arm close to the work surface, so as to capture and identify the measurement values on the display interface of the activity meter to be calibrated through the image acquirer, and record the identified measurement values as original calibration data in the calibration report.

[0015] According to a preferred embodiment, an ultrasonic ranging sensor is further provided at the end of the robotic arm near the work surface. The ranging sensor is capable of detecting the activity meter to be calibrated located on the work surface and obtaining detection information. The general control unit is capable of receiving the detection information transmitted by the ultrasonic ranging sensor.

[0016] The present invention also provides a method for calibrating an intelligent activity meter. The method comprises: storing a detection tool containing a radioactive source within a shielded portion; removing the detection tool from the shielded portion using a mechanical claw on a robotic arm and transferring it to a calibration area of the activity meter to be calibrated; and detecting the verticality of the detection tool during transfer by the mechanical claw to the calibration area of the activity meter to be calibrated using a laser transmitter and a laser receiver.

[0017] According to a preferred embodiment, the method further includes: the ranging sensor on the robotic arm detects the activity meter to be calibrated to generate detection information, and sends the detection information to the general control unit; the robotic arm transfers the detection tooling to the calibration area of the activity meter to be calibrated based on the position information related to the positioning tooling in the detection information, so as to measure the radioactive source through the activity meter to be calibrated and generate a measurement value, and the measurement value is sent to the general control unit by the activity meter to be calibrated. The functions of the ranging sensor are: first, to check whether the meter to be calibrated is in place and whether there are foreign objects inside the meter to be calibrated, so as to prevent squeezing when the radioactive source is placed, causing leakage of the radioactive source. Second, to check whether there are foreign objects on the shielding part when the standard radioactive source is put back, so as to prevent squeezing damage. The ranging sensor is, for example, an ultrasonic sensor.

[0018] According to a preferred embodiment, the method further includes: the mechanical claw transfers the detection tooling to the outside of the activity meter to be calibrated or to the inside of the shielding part; the general control unit calculates the detection result based on the measurement value and generates a calibration report based on the detection result.

[0019] The above method can realize the automatic transfer of radioactive sources, custom programming and storage of verification processes, and remote video monitoring of the verification process. In addition, not only does it not require manual movement of radioactive sources during the above verification process, but the verification personnel can also perform remote real-time operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a simplified schematic diagram of a preferred embodiment of the present invention;

[0021] Figure 2 It is a simplified schematic diagram of a preferred embodiment of the transfer portion of the present invention;

[0022] Figure 3 This is a simplified schematic diagram of a preferred embodiment of the shielding portion and the detection tooling provided by the present invention;

[0023] Figure 4 It is a simplified schematic diagram of a preferred embodiment of the mechanical claw and laser emitter provided by the present invention.

[0024] Reference Signs List

[0025] 1: Shielding department; 2: Transfer department; 3: General control department;

[0026] 4: Activity meter to be calibrated; 201: Guide rail; 202: Robotic arm;

[0027] 203: Mechanical claw; 204: Inspection tooling; 205: Laser transmitter;

[0028] 206: image acquisition device; 207: ultrasonic distance sensor. DETAILED DESCRIPTION

[0029] The following is a detailed description with reference to the accompanying drawings.

[0030] Figure 1 and Figure 2 A smart activity meter calibration device is shown. The device comprises at least a shielding unit 1, a transport unit 2, and a general control unit 3. The shielding unit 1 can store standard bottles containing radioactive sources and shield them to prevent them from posing a health hazard to calibration personnel.

[0031] The transfer unit 2 is capable of transferring the standard bottle between the shielding unit 1 and the calibration area of the activity meter to be calibrated 4. The general control unit 3 is capable of controlling at least the movement of the transfer unit 2. When the activity meter to be calibrated 4 is capable of measuring the radioactive source in the standard bottle and transmitting a measurement value corresponding to the measurement to the general control unit 3, the general control unit 3 is capable of transferring the standard bottle containing the radioactive source to the calibration area of the activity meter to be calibrated 4 via the transfer unit 2, and generating a calibration report for the activity meter to be calibrated 4 based on the measurement value, thereby realizing automatic calibration of the activity meter to be calibrated 4.

[0032] The movement of the transfer part 2 at least includes: the reciprocating movement of the robot arm 202 along the guide rail 201 , the lifting movement of the robot arm 202 along its own axial direction, and the opening / closing of the robot claw 203 .

[0033] The calibration area is the area where the activity meter 4 to be calibrated measures the radioactive source. Preferably, the calibration area of the activity meter 4 to be calibrated is the ionization chamber of the activity meter 4 to be calibrated. The calibration area of the activity meter 4 to be calibrated may also be other areas of the activity meter 4 to be calibrated.

[0034] The activity meter to be calibrated 4 can measure the radioactive source to obtain a measurement value corresponding to the radioactive source.

[0035] The activity meter 4 to be calibrated can send the measured value to the general control unit 3 .

[0036] The specific process of the general control unit 3 calculating the detection result based on the measurement value can be implemented according to the relevant steps in JJG 377-2019 "Radioactivity Meter Calibration Procedure", so the specific process of the general control unit 3 calculating the detection result based on the measurement value will not be repeated here.

[0037] The main control unit 3 is capable of running host computer software. This host computer software allows for customization of the activity meter calibration process through programming. This host computer software can automatically execute preset calibration steps based on corresponding calibration standards. Specifically, the main control unit 3 can control the transport unit 2 and other related components to automatically complete all calibration steps for the activity meter 4 to be calibrated. The main control unit 3 can also obtain the radioactive source measurement values of the activity meter 4 to be calibrated. The entire calibration process requires no human intervention.

[0038] The calibration device can also include an equipment body. Multiple equipment layers are provided in the equipment body. The equipment layers are used to install or store relevant equipment for calibrating the activity meter. Preferably, the plane where the equipment layers are located is parallel to the horizontal plane. Preferably, the equipment body can be in the shape of a rectangular parallelepiped. The equipment body can be made of high-strength load-bearing aluminum profiles. The equipment body has the characteristics of easy assembly and disassembly. Preferably, the equipment body is provided with multiple side doors. The side doors can all be opened. Preferably, only one side door is provided on the left side of the equipment body. Preferably, at least two side doors are provided on the right side of the equipment body so that the calibration personnel can transfer the relevant equipment to the interior of the equipment body through the above-mentioned two side doors. Preferably, the main door of the equipment body adopts a transparent acrylic plate with a frame. Through this setting, the equipment body can not only play a certain protective effect, but also make it convenient for the calibration personnel to observe the calibration process of the activity meter 4 to be calibrated in the equipment body in real time through the above-mentioned main door. A work surface is provided in the equipment body.

[0039] Preferably, the work surface is arranged in the second equipment layer. Components / equipment related to calibration can be installed on the work surface. The installation height of the work surface must meet ergonomic requirements so that the calibration personnel can use the components / equipment related to calibration on the work surface. The bottom of the equipment body is made of high-strength profiles. The table top of the work surface is made of aluminum plate, so that the flatness of the work surface can be taken into account while ensuring the strength of the work surface.

[0040] The above-mentioned components / equipment related to the verification may include but are not limited to: a shielding part 1, a transfer part 2, etc.

[0041] A shielding portion 1 is disposed above the work surface. Preferably, shielding portion 1 can be a six-hole shielded lead chamber. Shielding portion 1 can also utilize other devices or components capable of shielding a radioactive source. Preferably, shielding portion 1 can be in the form of a rectangular parallelepiped or cube. Preferably, shielding portion 1 can be up to ten centimeters thick.

[0042] The radioactive source stored in the shielding part 1 can be in solid, gaseous, or liquid form. For example, the radioactive source can be a standard radioactive solution. The radioactive source stored in the shielding part 1 can be a radioactive nuclide standard source as specified in JJG 377-2019 "Radioactivity Meter Calibration Procedure". The number of types of radioactive sources stored in the shielding part 1 can be multiple. The type of radioactive source stored in the shielding part 1 is determined by the calibration personnel based on actual calibration requirements. Preferably, one shielding part 1 can store multiple detection tooling 204. For example, one shielding part 1 can store six detection tooling 204.

[0043] Preferably, the standard bottle can be a vial or an ampoule.

[0044] According to a preferred embodiment, Figure 2 As shown, the transfer unit 2 includes at least a guide rail 201, a robotic arm 202, and a robotic gripper 203. The central control unit 3 is capable of controlling the guide rail 201, robotic arm 202, and robotic gripper 203. The guide rail 201, robotic arm 202, and robotic gripper 203 are each capable of receiving motion commands sent by the central control unit 3. The guide rail 201, robotic arm 202, and robotic gripper 203 are capable of moving based on the motion commands to transfer the standard bottle from the shielding unit 1 to the calibration area of the activity meter 4 to be calibrated.

[0045] A guide rail 201 is also provided on the work surface.

[0046] Preferably, the robotic arm 202 is configured to be movable at least along the axial direction of the guide rail 201. Preferably, the axial direction of the robotic arm 202 is perpendicular to the axial direction of the guide rail 201. Preferably, the robotic claw 203 is provided at the end of the robotic arm 202 away from the guide rail 201.

[0047] Preferably, the shielding portion 1 may be disposed near the guide rail 201 .

[0048] The general control unit 3 can control the movement of the guide rail 201 , the robotic arm 202 and the robotic claw 203 , and remove the detection tooling 204 from the shielding unit 1 through the cooperation of the guide rail 201 , the robotic arm 202 and the robotic claw 203 .

[0049] When the main control unit 3 receives the start instruction for starting the inspection work, the main control unit 3 can issue action instructions to the guide rail 201, the robot arm 202 and the robot claw 203. The start instruction for starting the inspection work can be issued by the inspection personnel through the main control unit 3.

[0050] The guide rail 201, robotic arm 202, and robotic gripper 203 can each receive motion commands from the central control unit 3 and move based on these commands to transfer the inspection tool 204 to the calibration area of the activity meter 4 to be calibrated. The guide rail 201 can be a heavy-duty linear guide rail 201. It features high precision, high reliability, and high stability. The guide rail 201 has a repeatable sliding accuracy of ±0.1 mm along a straight line.

[0051] The robotic arm 202 can be an intelligent collaborative robotic arm 202. Preferably, the robotic arm 202 is capable of at least four-axis linkage. The robotic arm 202 exhibits high repeatability and reliability. The end of the robotic arm 202 proximal to the guide rail 201 is movably connected to the guide rail 201. Preferably, the robotic arm 202 is also capable of receiving motion commands from the central control unit 3.

[0052] According to a preferred embodiment, Figure 3As shown, the transfer unit 2 can further include a detection tool 204. The detection tool 204 can serve as a support for the standard bottle containing the radioactive source, so that the mechanical gripper 203 can move the standard bottle containing the radioactive source by moving the detection tool 204.

[0053] The detection tooling 204 and the shielding lead chamber can constitute the shielding part 1 .

[0054] Preferably, shielding portion 1 can be used to store at least one test fixture 204. Test fixture 204 serves as a holder for a standard vial containing a radioactive source. Each test fixture 204 can accommodate at least one standard vial containing a radioactive source. This configuration reduces the risk of leakage of the radioactive source within the fully sealed test fixture 204 without compromising its testing performance.

[0055] The shielded lead chamber is provided with at least one storage space for storing the detection tool 204. Preferably, at least a portion of the detection tool 204 can be inserted into the storage space within the shielded lead chamber and form a sealed whole with the shielded lead chamber, so that the shielded lead chamber and the detection tool 204 jointly shield the radioactive source within the detection tool 204, thereby preventing the radioactive source from posing a health hazard to testers located near the device.

[0056] When the detection tooling 204 is moved by the mechanical claw 203 into the calibration area of the activity meter to be calibrated 4 and the end of the detection tooling 204 away from the activity meter to be calibrated 4 can jointly shield the radioactive source located in the calibration area of the activity meter to be calibrated 4 with the activity meter to be calibrated 4, the state of the detection tooling 204 is the calibration state.

[0057] When the detection tool 204 is not in the calibration state, the radioactive source in the detection tool 204 is in a locked state shielded by the standard bottle and the detection tool 204 .

[0058] When and only when the detection tool 204 is in the calibration state, the locked state of the radioactive source in the detection tool 204 can be released so that the calibration area of the activity meter 4 to be calibrated (for example, the ionization chamber of the activity meter 4 to be calibrated) can measure the radioactive source in the detection tool 204.

[0059] Through this configuration, when the detection tool 204 is not in the calibration state, the radioactive source in the detection tool 204 is in a locked state shielded by the standard bottle and the detection tool 204, so as to prevent the radioactive source in the standard bottle from causing adverse effects on the health of the calibration personnel.

[0060] Preferably, after the detection tool 204 is placed in the calibration area of the activity meter to be calibrated 4, the standard bottle containing the radioactive source clamped by the detection tool 204 can be unshielded, so that the activity meter to be calibrated 4 can measure the radioactive source in the standard bottle.

[0061] Preferably, the centers of the multiple positioning fixtures are all located on the same defined straight line, and the defined straight line is parallel to the straight line on which the axial direction of the guide rail 201 is located.

[0062] Preferably, the robotic arm 202 is capable of reciprocating translation along the guide rail 201 and moving to the position specified by the motion command. The robotic arm 202 is also capable of translation in a direction perpendicular to the axis of the guide rail 201 and / or elevation in a direction perpendicular to the work surface. Preferably, the repetitive motion of the robotic arm 202 achieves a positioning accuracy of ±0.1 mm.

[0063] A mechanical claw 203 is provided at the end of the robotic arm 202 away from the guide rail 201. Preferably, the mechanical claw 203 is capable of 360-degree rotation. Preferably, the mechanical claw 203 is provided with at least one recessed portion. The recessed portion is compatible with a raised portion on the exterior of the inspection tool 204, enabling the mechanical claw 203 to firmly grip the inspection tool 204 and prevent it from slipping during transfer by the mechanical claw 203. Preferably, the mechanical claw 203 is a high-precision mechanical claw 203.

[0064] Preferably, the transfer unit 2 can further include a detection tool 204. The detection tool 204 can serve as a support for the standard bottle containing the radioactive source, so that the mechanical gripper 203 can move / transfer the standard bottle containing the radioactive source by moving / transferring the detection tool 204.

[0065] Preferably, the standard bottle can be received at one end of the detection fixture 204 close to the shielding portion 1 along the axial direction of the detection fixture 204 .

[0066] The test tool 204 can be stored vertically inside the shielded lead room. When the standard bottle in the test tool 204 has been stored in the shielded lead room, the protrusion of the test tool 204 away from the shielded lead room can be located outside the shielded lead room.

[0067] The mechanical claw 203 can grab the end of the detection tool 204 away from the shielded lead chamber and move the detection tool 204 in a direction away from the shielded lead chamber to remove the detection tool 204 from the shielded lead chamber. The inspector can place the ampoule / vial containing the standard radioactive solution into the detection tool 204. Afterwards, the inspector places the detection tool 204 into the shielded lead chamber for inspection. Through this configuration, that is, the detection tool 204 containing the radioactive source is transferred through the transfer unit 2, so that the inspector can remotely operate the device, thereby reducing the health risks brought by the inspector's contact with the radioactive source.

[0068] According to a preferred embodiment, Figure 4 As shown, the mechanical claw 203 is provided with a laser emitter 205, and a laser receiver is provided on the work surface where the activity meter 4 to be calibrated is located, so that the laser emitter 205 and the laser receiver are configured to detect the verticality of the detection tooling 204 during the process of being moved by the mechanical claw 203.

[0069] According to a preferred embodiment, at least one vertical detection hole is provided on the skirt structure of the detection tool 204 , and the laser emitted by the laser emitter 205 can pass through the vertical detection hole and be received by a laser receiver located on the work surface.

[0070] Preferably, the skirt structure can be in the shape of a circular ring. For example, the skirt structure can be in the shape of a hollow disc. Preferably, the skirt structure can be integrally connected to the detection tooling 204. Preferably, the skirt structure can also be detachably connected to the detection tooling 204. Preferably, the axial direction of the detection tooling 204 is perpendicular to the plane where the skirt structure is located. Preferably, the vertical detection holes on the skirt structure are close to the circumferential outer wall of the detection tooling 204. Preferably, the axial direction of the vertical detection holes on the skirt structure is parallel to the axial direction of the detection tooling 204. The number of vertical detection holes on the skirt structure can be multiple.

[0071] The laser emitter 205 is arranged at the end of the mechanical claw 203 close to the work surface. The laser receiver is arranged on the work surface so that the laser emitter 205 and the laser receiver are configured to detect the verticality of the detection tool 204 during the process of being moved by the mechanical claw 203. Preferably, the laser emitter 205 and the laser receiver are in the same vertical plane. Preferably, the laser receiver is located directly below the laser emitter 205. Preferably, the laser emitter 205 can be a through-beam laser sensor. Preferably, the direction of the laser emitted by the laser emitter 205 is perpendicular to the plane where the work surface is located. The laser emitter 205 can make the laser it emits have a light spot as small as possible.

[0072] Preferably, at least one vertical detection hole is provided on the skirt structure of the detection tool 204, so that the laser emitted by the laser emitter 205 can pass through the vertical detection hole and be received by a laser receiver located on the work surface.

[0073] When and only when the raised portion of the detection tooling 204 is clamped by the recessed portion of the mechanical claw 203 , the laser emitter 205 provided on the mechanical claw 203 can be started and emit laser light.

[0074] The laser emitted by the laser transmitter 205 is directed toward a laser receiver installed on the work surface.

[0075] If the laser receiver does not receive the laser emitted by the above laser receiver, it means that the laser emitted by the above laser receiver fails to pass through the vertical detection hole of the detection tool 204, that is, the axial direction of the detection tool 204 is not perpendicular to the plane where the work table is located.

[0076] According to a preferred embodiment, Figure 3 As shown, an ultrasonic ranging sensor 207 is further provided at the end of the robotic arm 202 close to the work surface. The ranging sensor can detect the activity meter 4 to be calibrated located on the work surface and obtain detection information, wherein the general control unit 3 can receive the detection information sent by the ultrasonic ranging sensor 207.

[0077] The end of the robotic arm 202 near the work surface is also provided with an ultrasonic distance sensor 207. The distance sensor can detect the activity meter 4 to be tested located on the work surface and obtain detection information. The ultrasonic distance sensor 207 can send the detection information to the main control unit 3.

[0078] The detection information at least includes whether the activity meter to be calibrated 4 in the positioning tool is in place, whether the activity meter to be calibrated 4 is located at the center of the positioning tool, whether the activity meter to be calibrated 4 is perpendicular to the plane where the work table is located, whether there are foreign objects inside the activity meter to be calibrated 4 and the well depth of the activity meter to be calibrated 4.

[0079] The limited position of the activity meter to be calibrated 4 refers to the position of the activity meter to be calibrated 4 when it is calibrated, which is limited by the positioning tool.

[0080] Multiple positioning fixtures can be evenly distributed on the work surface along a straight line parallel to the guide rail 201. Preferably, the positioning fixture can fix at least a portion of the activity meter 4 to be calibrated on the work surface. Preferably, the positioning fixture can be flexibly set according to actual calibration requirements.

[0081] Preferably, the ultrasonic distance measuring sensor 207 and the image acquisition device 206 are disposed adjacent to each other at the end of the robotic arm 202 close to the work surface. The detection accuracy of the ultrasonic distance measuring sensor 207 can reach millimeter level.

[0082] The ultrasonic distance measuring sensor 207 provided at the end of the robotic arm 202 close to the work surface can detect multiple points in the calibration area of the activity meter 4 to be calibrated.

[0083] According to a preferred embodiment, Figure 3 As shown, the end of the robotic arm 202 near the work surface is provided with an image capturer 206. The image capturer 206 captures and identifies the measurement values on the display interface of the activity meter to be tested, and records the identified measurement values as raw calibration data in the calibration report. For example, the image capturer 206 can capture and identify the measurement values on the display interface of the activity meter to be tested that does not have a COM port for communication through OCR image recognition, and record the identified measurement values as raw calibration data. The image capturer 206 can also observe the appearance of the standard bottle within the detection fixture 204 and the movement of the detection fixture 204. Such movement can include the posture and height of the detection fixture 204.

[0084] Image acquisition device 206 transmits the captured images / videos of inspection tool 204 during transfer to main control unit 3. Main control unit 3 analyzes these images / videos and determines whether the standard bottle held in inspection tool 204 by mechanical gripper 203 is in good condition. If main control unit 3 identifies damage to the standard bottle held in inspection tool 204 by mechanical gripper 203 based on the captured images / video, main control unit 3 immediately issues a system instruction to transfer unit 2 to return inspection tool 204 to the storage space within shielding unit 1.

[0085] Preferably, a plurality of positioning fixtures are provided on the work surface, and the positioning fixtures are used to define the position of the activity meter to be inspected on the work surface.

[0086] The positioning fixture can be provided with various specifications according to the caliber of the ionization chamber of the existing activity meter. Preferably, the positioning fixture can fix the activity meter to be calibrated 4. Preferably, the positioning fixture can be in the shape of a ring.

[0087] Since the calibration of the activity meter may require a variety of different radioactive sources (for example, the calibration of the activity meter may use three medical short half-life nuclides, Tc-99m, I-131 and F-18), the shielding part 1 and the detection tooling 204 of the device need to store different types of radioactive sources according to the actual calibration requirements. However, during the actual calibration process, various failures may occur in the transport part 2 and other related components, resulting in the transport part 2 not taking the detection tooling 204 / radioactive source corresponding to the system instruction from the shielding part 1 based on the system instruction (the system instruction is input by the calibration personnel through the main control part 3), or transferring the detection tooling 204 / radioactive source to the calibration area of the activity meter to be calibrated 4 that does not match the system instruction, thereby reducing the accuracy of the calibration operation performed by the device. Therefore, the present invention proposes the following technical solution to solve the above-mentioned technical problems.

[0088] Preferably, each standard bottle has a unique identification code. The identification code can at least include the source information of the radioactive source stored in the standard bottle. The source information of the radioactive source at least includes the type and activity range of the radioactive source.

[0089] The source information of the radioactive source may further include the capacity of the radioactive source, etc. The identification code may be a QR code or a bar code.

[0090] The identification code can be set directly on the standard bottle by the test personnel when preparing the radioactive source. For example, the identification code can be pasted on the outside of the standard bottle in the form of a QR code.

[0091] The system instructions are manually set by the test personnel through the main control unit 3. Since the test procedures / operations of different activity meters are slightly different, the system instructions corresponding to the actual test work of each activity meter 4 to be tested are also different.

[0092] The system instructions at least include: model information of the activity meter 4 to be calibrated, and the type and activity range of the radioactive source required to calibrate the activity meter 4 to be calibrated.

[0093] The system instructions may also include but are not limited to: the number of the positioning fixture where the activity meter to be calibrated 4 is located, the time when the activity meter to be calibrated 4 measures each radioactive source, the number of times the activity meter to be calibrated 4 needs to repeatedly measure the radioactive source, etc.

[0094] Preferably, when the transfer unit 2 transfers the radioactive source in the detection tooling 204, the image acquirer 206 provided on the robotic arm 202 can identify the identification code of the standard bottle in the detection tooling 204 transferred by the robotic claw 203 movably connected to the robotic arm 202.

[0095] Particularly preferably, the image acquirer 206 generates second identification information based on the identification code when and only when the standard bottle in the detection tooling 204 transferred by the mechanical claw 203 movably connected to the mechanical arm 202 is completely placed in the calibration area of the calibration activity meter.

[0096] The second identification information at least includes the type of the radioactive source placed in the calibration area of the calibration activity meter.

[0097] Particularly preferably, the second identification information further includes the activity range of the radioactive source placed in the calibration area of the calibration activity meter.

[0098] When the transfer part 2 transfers the detection tool 204 from the shielding part 1 to the area to be calibrated of the activity meter 4 to be calibrated corresponding to the system instruction based on the system instruction, the detection tool 204 entering the area to be calibrated of the activity meter 4 to be calibrated can search and identify the positioning tool corresponding to the area to be calibrated.

[0099] The positioning fixture corresponding to the area to be tested refers to the positioning fixture where the activity meter 4 to be tested corresponding to the area to be tested is located.

[0100] The method by which the detection tool 204 can search for and identify the positioning tool corresponding to the area to be inspected is: when the radioactive source in the detection tool 204 has completely entered the inspection area, the detection tool 204 searches for and measures the distance between the nearby positioning tool and the detection tool 204, and identifies the positioning tool with the shortest distance to the detection tool 204 as the positioning tool corresponding to the area to be inspected.

[0101] The method by which the detection tool 204 can search and identify the positioning tool corresponding to the area to be inspected can also be: the detection tool 204 searches for nearby positioning tools, and identifies the positioning tool on the extension line of the axial center line of the detection tool 204 as the positioning tool corresponding to the area to be inspected.

[0102] The detection tool 204 corresponding to the area to be calibrated of the activity meter 4 to be calibrated can send a data request to the positioning tool corresponding to the area to be calibrated.

[0103] The positioning tool corresponding to the area to be inspected obtains the data request sent by the inspection tool 204 and forwards the data request sent by the inspection tool 204 to the general control unit 3 .

[0104] The general control unit 3 obtains the data request sent by the detection tool 204 , and obtains first identification information corresponding to the data request based on the data request sent by the detection tool 204 .

[0105] The first identification information includes at least the type of radioactive source required to be measured by the activity meter 4 to be calibrated, corresponding to the positioning fixture forwarding the data request. For example, after a calibration operator correctly places an activity meter 4 to be calibrated within a positioning fixture, the calibration operator can input the type of radioactive source required for calibration of the activity meter 4 to be calibrated, corresponding to the positioning fixture, through the main control unit 3.

[0106] The type of radioactive source required for the calibration of the activity meter 4 to be calibrated corresponding to the positioning tool may be the type of radioactive source in the first identification information corresponding to the data request forwarded by the positioning tool.

[0107] Particularly preferably, the first identification information can further include: the activity range of the radioactive source required to be measured by the activity meter 4 to be calibrated corresponding to the positioning tool that forwards the data request.

[0108] If and only if the second identification information generated by the image acquirer 206 based on the identification code is logically associated with the first identification information corresponding to the data request and acquired by the general control unit 3 based on the data request sent by the detection tool 204, the general control unit 3 sends a start instruction to the activity meter 4 to be tested corresponding to the positioning tool. The activity meter 4 to be tested can receive the start instruction and start the current measurement operation.

[0109] The condition for the second identification information generated by the image acquirer 206 based on the identification code and the first identification information corresponding to the data request acquired by the general control unit 3 based on the data request sent by the detection tool 204 to be logically associated is:

[0110] The type of the radioactive source in the first identification information is the same as the type of the radioactive source in the second identification information, and the activity range of the radioactive source in the first identification information is within the activity range of the radioactive source in the second identification information.

[0111] When the second identification information generated by the image acquirer 206 based on the identification code has no logical association with the first identification information corresponding to the data request and acquired by the general control unit 3 based on the data request sent by the detection tool 204, the general control unit 3 sends a suspension calibration instruction to the activity meter 4 to be tested corresponding to the positioning tool. The activity meter 4 to be tested can receive the suspension calibration instruction and suspend the current calibration operation.

[0112] This configuration can avoid the situation where the transfer part 2 and other related components are unable to accurately transfer the radioactive source corresponding to the system instruction from the shielding part 1 to the calibration area of the activity meter to be calibrated 4 corresponding to the system instruction in accordance with the system instruction when a mechanical failure / electronic failure occurs, thereby improving the accuracy of the device in calibrating the activity meter to be calibrated 4.

[0113] The present invention also provides a method for calibrating an intelligent activity meter. The method comprises: storing a detection tool 204 containing a radioactive source within a shielding portion 1; removing the detection tool 204 from the shielding portion 1 using a mechanical claw 203 on a robotic arm 202 and transferring the detection tool 204 to a calibration area of the activity meter 4 to be calibrated; and detecting the verticality of the detection tool 204 during transfer by the mechanical claw 203 to the calibration area of the activity meter 4 to be calibrated using a laser transmitter 205 and a laser receiver.

[0114] According to a preferred embodiment, the method further includes: the ultrasonic ranging sensor 207 on the robotic arm 202 detects the activity meter to be calibrated 4 to generate detection information, and sends the detection information to the general control unit 3; the robotic arm 202 transfers the detection tooling 204 to the calibration area of the activity meter to be calibrated 4 based on the position information related to the positioning tooling in the detection information, so as to measure the radiation source through the activity meter to be calibrated 4 and generate a measurement value, and the measurement value is sent to the general control unit 3 by the activity meter to be calibrated 4.

[0115] The detection information at least includes whether the activity meter 4 to be tested is in place in the positioning fixture, whether the activity meter 4 to be tested is located at the center of the positioning fixture, whether the activity meter 4 to be tested is perpendicular to the plane of the work surface, whether there are foreign objects inside the activity meter 4 to be tested, and the depth of the activity meter 4 to be tested. The detection information can also include the size information of the activity meter 4 to be tested and the position information of the positioning fixture.

[0116] According to a preferred embodiment, the method further includes: the mechanical claw 203 transfers the detection tooling 204 to the outside of the activity meter 4 to be calibrated or to the inside of the shielding part 1; the general control part 3 calculates the detection result based on the measurement value, and generates a calibration report based on the detection result.

[0117] The communication interface of the host of the activity meter to be calibrated 4 is capable of sequentially acquiring multiple measurement values. Most host computers of activity meters are equipped with an RS232 interface, so the main control unit 3 can communicate with the activity meter to be calibrated 4 through a single-chip microcomputer or a remote PC, and acquire the measurement values according to the communication protocol of the activity meter to be calibrated 4. In addition, for the activity meter to be calibrated / standard-grade activity meter that cannot communicate, the image acquirer 206 can be used to take a picture of the host display interface of the activity meter to be calibrated / standard-grade activity meter, and the taken picture can be sent to the main control unit 3 for OCR image recognition, and then the type of radioactive source (i.e., nuclide), the measurement value, and the unit of the measurement value can be identified from the above picture. The type of radioactive source (i.e., nuclide), the measurement value, and the unit of the measurement value can be recorded by the main control unit 3 in the calibration report.

[0118] The above method can realize the automatic transfer of radioactive sources, custom programming and storage of verification procedures, and remote video monitoring of the verification process. In addition, not only does it not require manual movement of radioactive sources during the above verification process, but the verification personnel can also operate remotely and in real time.

[0119] For example, the specific verification process of this device can be:

[0120] 1) The detection tooling 204 containing six standard bottles of radioactive sources is stored in the storage space within the shielded lead chamber, waiting for the robot arm 202 to grab them;

[0121] 2) The robotic arm 202 moves along the guide rail 201 to the vicinity of the shielded lead chamber and begins to descend, so that the robotic claw 203 can clamp the detection tooling 204 in the shielded lead chamber;

[0122] 3) After the mechanical gripper 203 moves the inspection tooling 204 out of the shielded lead chamber, the robotic arm 202 moves along the guide rail 201 to the position of the laser receiver on the work surface. The laser emitter 205 located at the end of the mechanical gripper 203 emits a laser beam, which passes through the vertical inspection hole of the inspection tooling 204 and is received by the laser receiver.

[0123] 4) The robotic arm 202 moves along the guide rail 201 to a position corresponding to the calibration area of the activity meter 4 to be calibrated. The ultrasonic ranging sensor 207 provided at the end of the robotic arm 202 detects the activity meter 4 to be calibrated to generate detection information, and sends the detection information to the main control unit 3;

[0124] 5) The general control unit 3 obtains the position information related to the positioning tool in the detection information, and the robotic arm 202 and the robotic claw 203 move the detection tool 204 into the calibration area of the activity meter 4 to be calibrated based on the position information of the positioning tool;

[0125] 6) The mechanical claw 203 carrying the detection tooling 204 rises to the highest point of the mechanical arm 202 and repeats steps 4 to 5 until the main control unit 3 obtains the measurement values of all the activity meters 4 to be tested for the radioactive sources;

[0126] 7) The robotic arm 202 returns along the guide rail 201 to the position corresponding to the shielded chamber so that the robotic claw 203 returns to the top of the shielded lead chamber. The robotic arm 202 then opens the robotic claw 203 while descending, and uses the robotic claw 203 to place the testing tool 204 and the ampoule / vial containing the standard radioactive solution back into the six-hole shielded lead chamber.

[0127] 8) Repeat the operations in steps 2 to 7 until the measurement values of all the activity meters 4 to be calibrated are obtained;

[0128] 9) The general control unit 3 calculates the test results based on the measured values and automatically generates a test report and / or records data.

[0129] The technical effects of the present invention include at least:

[0130] 1) This device realizes automation and standardization of the calibration process of medical activity meters through the cooperation between the guide rail 201, the mechanical arm 202, the laser sensor, the ultrasonic ranging sensor 207 and other related components;

[0131] 2) This device is equipped with a through-beam laser sensor to check the verticality of the detection tool 204 during transfer. That is, only when the detection tool 204 is grasped by the mechanical claw 203 in a manner perpendicular to the horizontal plane can the laser pass through the vertical detection hole and be emitted to the laser receiver on the work surface. This ultimately ensures that the detection tool 204 is always perpendicular to the work surface during transfer, thereby preventing the detection tool 204 from contacting the calibration area (e.g., the ionization chamber) of the activity meter 4 to be calibrated and damaging the activity meter 4 to be calibrated.

[0132] 3) The ultrasonic distance sensor 207 of this device can use multi-point distance measurement to check whether the activity meter 4 to be tested is in place, whether it is located at the center of the positioning tool, whether it is perpendicular to the work surface, whether there are foreign objects inside the activity meter 4 to be tested, and the depth of the well of the activity meter 4 to be tested. The ultrasonic distance sensor 207 can also control the descent distance of the mechanical claw 203;

[0133] 4) The general control unit 3 can obtain the relevant data information (such as the above-mentioned measurement values) measured by the activity meter to be calibrated 4 through the RS232 communication serial port, and can classify, analyze and calculate the above-mentioned relevant data information, and issue a calibration report, ultimately realizing the standardization and electronicization of the calibration data, and laying a technical foundation for the periodic traceability of the calibration data.

[0134] In short, the present invention designs an intelligent activity meter calibration device and method specifically for the calibration of medical activity meters; the present invention grasps the radioactive source through the relevant components of the transfer part 2 (such as the mechanical claw 203), so that the calibration personnel can remotely monitor the calibration work of the activity meter, thereby reducing the health risks brought by the contact between the calibration personnel and the radioactive source; the present invention designs a fully sealed radioactive source placement bracket (i.e., the detection tooling 204), which reduces the risk of leakage of the radioactive source without affecting its calibration characteristics; the device can complete the automatic calibration of the activity meter without manually replacing the radioactive source, transcribing data and editing certificates, thereby reducing labor costs, improving the efficiency of the calibration work, and realizing the standardization and electronicization of calibration data.

[0135] Preferably, the activity meters submitted for inspection are mostly provided by various institutions. Given that the brands, types, structures, shapes, and sizes of the activity meters used by various sources vary, and particularly that a significant number of existing activity meters lack a communication interface capable of communicating with the central control unit in this solution, achieving the unmanned inspection environment desired by this device requires image recognition of the screens above the various activity meters to obtain test results. However, due to the varying brands, the display screens on the activity meters are located in quite different positions. This requires, during preparatory work before the inspection, personnel to manually align the activity meter's display screen with the image recognition unit in the above solution. However, due to obstruction by the positioning fixture provided in this solution, the display screens of some activity meters may not be properly read by the image recognition unit. Furthermore, the inspection fixture contains radioactive material, which is relatively dangerous. Using a robotic arm to move it still presents certain risks. Accidents such as dropping, bumping, or breaking it could lead to radioactive material leakage, resulting in significant losses.

[0136] Based on the above, a preferred embodiment is given. In this embodiment, the transport part is used to move the activity meter to be calibrated, and the calibration tooling is fixed in a relative position. Specifically, the transport part (for example, configured as a mechanical claw) is used to grab the activity meter to be calibrated, and the grabbing position can be designed at any position around the activity meter to be calibrated. Except for the grabbed part, the remaining position of the activity meter can be exposed to the environment without being blocked by the field of view. The above-mentioned grabbed part can be the ionization chamber of the activity meter. For some activity meter devices with integrated detection and display, the grabbed part can also be the activity meter as a whole. The mechanical claw can also be provided with a detector for detecting verticality and an ultrasonic detection device for detecting relative position. The detection tooling is relatively fixed in a specific position, preferably within the aforementioned shielded room. The shielded room may have an opening adapted to accommodate the portion or entire structure of the activity meter being captured, so that the activity meter, driven by the transport unit, can be transported into the shielded room to establish a detection connection with the detection tooling. This detection connection refers to the relative positional relationship between the detection tooling and the activity meter that enables detection. Simultaneously, because the portion of the activity meter not covered by the capture unit of the transport unit is exposed without obstruction, an image acquisition unit disposed on the machine wall or other locations can capture the reading data on the activity meter's display screen in a surrounding and unobstructed manner.

[0137] The above solution first solves the problem that some activity meters are difficult to obtain. Through the movement of the mechanical claw, most of the positions of the activity meter are not blocked by the positioning tool. In addition, the problem of poor visibility in certain positions can be solved by the transport unit by controlling the activity meter to move to a position with better visibility. At the same time, the activity meter itself can also be rotated circumferentially and axially by the mechanical claw to display its display screen in the image acquisition unit's acquisition field of view in a more easily readable manner, so that the device can adapt to more and more comprehensive calibration objects. In addition, the safe use of the detection tool is achieved. In this embodiment, the detection tool itself does not need to perform any movement, and preferably, it can also be placed in the shielding part. This greatly reduces the probability of the detection tool being dropped, bumped, or broken due to movement, thereby causing a radioactive material leakage accident. At the same time, it also reduces the escape of some radioactive rays, so that the overall environmental safety can be further improved. At the same time, the method of moving the activity meter to be calibrated is chosen so that the device has more adjustment freedom for various types of activity meters. Due to the variety of activity meters, the structures of their sample inlets, collection parts, etc. may be inconsistent or even dissimilar. Compared with the standard structure, mass, and volume detection tooling that can be used in this device, how to form the sampling, detection, data display and other processes that are suitable for the activity meter is more complicated. Therefore, this scheme is based on the use of a multi-degree-of-freedom robotic arm to drive the activity meter to move freely, which can give more adjustment space for the calibration of various activity meters, thereby achieving the calibration effect for various activity meters and improving the applicability and flexibility of this device.

[0138] It should be noted that the above-mentioned specific embodiments are exemplary, and those skilled in the art can come up with various solutions inspired by the disclosure of the present invention, and these solutions also fall within the scope of the disclosure of the present invention and fall within the scope of protection of the present invention. Those skilled in the art should understand that the present invention specification and its drawings are illustrative and do not constitute a limitation on the claims. The scope of protection of the present invention is defined by the claims and their equivalents. The present invention specification contains multiple inventive concepts, such as "preferably", "according to a preferred embodiment" or "optionally", which means that the corresponding paragraph discloses an independent concept, and the applicant reserves the right to file a divisional application based on each inventive concept.

Claims

1. An intelligent activity meter calibration device, characterized in that: At least: The shielding part (1) is configured to store a standard bottle containing a radioactive source and shield the radioactive source to prevent the radioactive source from causing harm to the health of the test personnel; The transfer unit (2) is configured to transfer the standard bottle between the shielding unit (1) and the calibration area of the activity meter (4) to be calibrated, and includes a guide rail (201), a mechanical arm (202), a mechanical claw (203) provided with a laser emitter (205), and a detection tool (204); A general control unit (3), capable of at least controlling the movement of the transfer unit (2); The activity meter (4) to be calibrated has a laser receiver on its work surface. in, In the case where the activity meter to be calibrated (4) is capable of measuring the radioactive source in the standard bottle and sending a measurement value corresponding to the measurement to the general control unit (3), the general control unit (3) is configured to be able to transfer the standard bottle containing the radioactive source to the calibration area of the activity meter to be calibrated (4) through the transfer unit (2), and the laser emitter (205) and the laser receiver are capable of detecting the verticality of the detection tool (204) during the process of being moved by the mechanical claw (203) based on the situation that the laser passes through at least one vertical detection hole provided on the skirt structure of the detection tool (204) close to the circumferential outer wall of the detection tool (204), and generate a calibration report of the activity meter to be calibrated (4) based on the measurement value, so as to realize the automatic calibration of the activity meter to be calibrated (4).

2. The device according to claim 1, characterized in that The general control unit (3) is capable of controlling the guide rail (201), the robotic arm (202) and the robotic claw (203); the guide rail (201), the robotic arm (202) and the robotic claw (203) are capable of respectively receiving action instructions sent by the general control unit (3); and the robotic claw (203), the guide rail (201) and the robotic arm (202) are capable of moving based on the action instructions to transfer the standard bottle from the shielding unit (1) to the calibration area of the activity meter (4) to be calibrated.

3. The device according to claim 2, characterized in that The detection tool (204) can serve as a support for the standard bottle containing the radioactive source, so that the mechanical claw (203) can move the standard bottle containing the radioactive source by moving the detection tool (204).

4. The device according to claim 2, characterized in that An image acquirer (206) is provided at the end of the mechanical arm (202) close to the work surface, so as to capture and identify the measurement value on the display interface of the activity meter to be calibrated through the image acquirer (206), and record the identified measurement value as original calibration data in the calibration report.

5. The device according to claim 2, characterized in that An ultrasonic distance measuring sensor (207) is also provided at the end of the mechanical arm (202) close to the work surface. The ultrasonic distance measuring sensor (207) is configured to detect the activity meter (4) to be calibrated and obtain detection information. The general control unit (3) is capable of receiving the detection information sent by the ultrasonic distance measuring sensor (207).

6. A method for calibrating an intelligent activity meter using the intelligent activity meter calibration device according to any one of claims 1 to 5, characterized in that: The method comprises: storing the detection tool (204) containing the radioactive source in the shielding portion (1); The detection tool (204) is taken out from the shielding part (1) by a mechanical claw (203) on a mechanical arm (202), and is transferred to a calibration area of the activity meter (4) to be calibrated; The verticality of the detection tool (204) during the process of being transferred by the mechanical claw (203) to the calibration area of the activity meter (4) to be calibrated is detected by a laser transmitter (205) and a laser receiver.

7. The method according to claim 6, characterized in that The method further comprises: The ultrasonic distance measuring sensor (207) on the mechanical arm (202) detects the activity meter (4) to be calibrated to generate detection information, and sends the detection information to the general control unit (3); The robot arm (202) transfers the detection tool (204) to the calibration area of the activity meter to be calibrated (4) based on the position information related to the positioning tool in the detection information, so as to measure the radioactive source through the activity meter to be calibrated (4) and generate a measurement value, and the measurement value is sent to the general control unit (3) by the activity meter to be calibrated (4).

8. The method according to claim 7, characterized in that The method further comprises: The mechanical claw (203) transfers the detection tool (204) to the outside of the activity meter (4) to be calibrated or to the inside of the shielding part (1); The general control unit (3) calculates the detection result based on the measurement value and generates a verification report based on the detection result.

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