Radiation Source Control System and Method

Abstract

The present application provides a radiation source control system and method, which relates to the field of medical technology. The radiation source control system includes: a housing, a source carrier disposed in the housing, a plurality of driving devices, and a control device. The plurality of driving devices are all disposed on the housing, and the driving ends of the plurality of driving devices are all matched with the position of the source carrier; the control device is connected to the plurality of driving devices and is used to control the mutual coupling between the plurality of driving devices, so that the mutually coupled plurality of driving devices control the source carrier to rotate to open the source; and it is also used to control the decoupling between the plurality of driving devices and control the source carrier to rotate to close the source through one of the driving devices among the decoupled plurality of driving devices. When a source opening failure or a source closing failure occurs to the source carrier under the control of at least one of the plurality of driving devices in the present application, the source carrier can be controlled to be emergently closed through other driving devices, ensuring the safety of radiotherapy equipment.

Description

Technical Field

[0001] The present invention relates to the field of medical technologies, and in particular, to a radiation source control system and method. Background Art

[0002] Currently, radiotherapy equipment has become an important tool for treating tumors. If a failure occurs during the treatment process of the radiotherapy equipment, it is necessary to urgently turn off the radiation source of the equipment.

[0003] In the radiotherapy equipment related to the related technology, a single-axis driving device is usually used to control the radiation source body to turn on or off the source. When an open-source failure or a close-source failure occurs in the radiotherapy equipment, the control device in the radiotherapy equipment will send an emergency close-source instruction to the single-axis driving device.

[0004] However, due to the complexity of the emergency close-source procedure and high instability, if the program fails to switch the single-axis driving device into the emergency close-source mode, or the control link of the single-axis driving device is abnormal, at this time, the single-axis driving device cannot normally control the radiation source body to perform an emergency close-source, resulting in uncontrollable radiation. Summary of the Invention

[0005] An object of the present invention is to provide a radiation source control system and method for, in view of the deficiencies in the above-mentioned related technologies, when an open-source failure or a close-source failure of the radiation source body occurs under the control of at least one of multiple driving devices, being able to control the radiation source body to perform an emergency close-source through other driving devices, and ensuring the safety of the radiotherapy equipment.

[0006] To achieve the above object, the technical solutions adopted in the embodiments of the present application are as follows:

[0007] In a first aspect, an embodiment of the present application provides a radiation source control system, including: a housing, a radiation source body disposed in the housing, multiple driving devices, and a control device;

[0008] The multiple driving devices are all disposed on the housing, and the driving ends of the multiple driving devices are all matched with the position of the radiation source body;

[0009] The control device is connected to the multiple driving devices, and is used to control the multiple driving devices to be coupled to each other, so that the multiple coupled driving devices control the radiation source body to rotate and turn on the source; and is also used to control the multiple driving devices to be decoupled from each other, so as to control the radiation source body to rotate and turn off the source through one of the decoupled driving devices.

[0010] In one embodiment, the driving device includes: a driving gear and a coupling driving device;

[0011] The driving gear is matched with the position of the gear provided on the radiation source body;

[0012] The coupling drive device is in transmission connection with the drive gear;

[0013] The control device is connected to a plurality of the coupling drive devices, and is used for controlling the mutual coupling between the plurality of the coupling drive devices, so as to drive the gear arranged on the source carrier to rotate through the drive gear for source opening; and is also used for controlling the decoupling between the plurality of the coupling drive devices, so that one of the decoupled plurality of the coupling drive devices drives the gear arranged on the source carrier to rotate through the drive gear for source closing.

[0014] In one embodiment, the coupling drive device includes: a clutch, a servo driver and a motor;

[0015] One end of the clutch is connected to the drive gear, the other end of the clutch is connected to the servo driver, and the motor is connected to the servo driver;

[0016] The control device is connected to the servo driver and is used for controlling the mutual coupling between the plurality of the servo drivers; the control device is also connected to a plurality of the clutches and is used for controlling the suction of both ends of the plurality of the clutches, so that the mutually coupled servo drivers drive the gear arranged on the source carrier to rotate through the drive gear for source opening;

[0017] The control device is also used for controlling the decoupling between the plurality of the servo drivers and controlling the suction of both ends of one of the clutches, so that the servo driver corresponding to the clutch with both ends sucked drives the gear arranged on the source carrier to rotate through the drive gear for source closing.

[0018] In one embodiment, the radiation source control system further includes: a sensor and a timer;

[0019] Both the sensor and the timer are arranged in the housing, and the sensor is located at the source opening position of the source carrier to detect whether the source opening of the source carrier is in place;

[0020] Both the sensor and the timer are connected to the control device. After receiving the source opening in-place signal sent by the sensor, the control device controls the timer to start timing and obtains the timing-out instruction sent by the timer.

[0021] In one embodiment, the plurality of the drive devices include: a main drive device and a slave drive device;

[0022] The control device is respectively connected to the main drive device and the slave drive device, and is used for controlling the slave drive device to drive the source carrier to close the source in case that the main drive device fails to drive the source carrier to close the source.

[0023] In a second aspect, an embodiment of the present application further provides a radiation source control method, which is applied to the radiation source control system described in the above embodiment; the method includes:

[0024] Control the main driving device and the slave driving device to be coupled to each other, so as to drive the radiation source body to open the source through the main driving device and the slave driving device;

[0025] Obtain the signal indicating that the source opening is in place, and control the timer to start timing;

[0026] If the time-out instruction sent by the timer is received, then control the decoupling between the main driving device and the slave driving device, and control the main driving device to drive the radiation source body to rotate to close the source.

[0027] In one embodiment, the method further includes:

[0028] Based on the abnormal signal of the radiation source body, control the slave driving device to drive the radiation source body to rotate to close the source.

[0029] In one embodiment, before controlling the slave driving device to drive the radiation source body to rotate to close the source based on the abnormal signal of the radiation source body, the method further includes:

[0030] If the time-out instruction sent by the timer is received, then generate an abnormal signal indicating that the source closing is timed out.

[0031] In one embodiment, before controlling the slave driving device to drive the radiation source body to rotate to close the source based on the abnormal signal of the radiation source body, the method further includes:

[0032] Based on the source closing position signal sent by the source closing position sensor, determine whether the radiation source body reaches the source closing in-place position;

[0033] If the radiation source body does not reach the source closing in-place position, then generate an abnormal signal indicating that the source closing fails.

[0034] In one embodiment, before controlling the slave driving device to drive the radiation source body to rotate to close the source based on the abnormal signal of the radiation source body, the method further includes:

[0035] Based on the source opening position signal sent by the source opening position sensor, determine whether the radiation source body reaches the source opening in-place position;

[0036] If the radiation source body does not reach the source opening in-place position, then generate an abnormal signal indicating that the source opening fails.

[0037] The beneficial effects of the present application are:

[0038] The present application provides a radiation source control system and method. The radiation source control system includes: a housing, a source carrier disposed inside the housing, a plurality of driving devices, and a control device. The plurality of driving devices are all disposed on the housing, and the driving ends of the plurality of driving devices are all matched with the position of the source carrier. The control device is connected to the plurality of driving devices and is configured to control the plurality of driving devices to be coupled to each other, so that the coupled plurality of driving devices control the source carrier to rotate to turn on the source. The control device is further configured to control the plurality of driving devices to be decoupled, and control the source carrier to rotate to turn off the source through one of the decoupled driving devices. In the solution of the present application, by providing a plurality of driving devices, when the source carrier fails to turn on or turn off the source under the control of at least one driving device, the source carrier can be controlled to perform an emergency turn-off through other driving devices, ensuring the normal emergency turn-off of the source carrier and guaranteeing the safety of the use of radiotherapy equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0040] Figure 1 A side view of a radiation source control system provided by an embodiment of the present application;

[0041] Figure 2 A schematic structural diagram of a driving device provided by an embodiment of the present application;

[0042] Figure 3 A principle block diagram of a radiation source control system provided by an embodiment of the present application;

[0043] Figure 4 A flowchart of a radiation source control method provided by an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0044] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention.

[0045] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application claimed, but merely represents the selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0046] In the description of the present application, it should be noted that if terms such as "upper", "lower", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is customarily placed during use, it is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present application.

[0047] In addition, terms such as "first", "second", etc. in the specification, claims and above-mentioned drawings of the present invention are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0048] It should be noted that, without conflict, the features in the embodiments of the present application can be combined with each other.

[0049] In the radiotherapy equipment related to the prior art, a single-axis drive device is usually used to control the source carrier to open or close the source. When an open-source failure or a close-source failure occurs in the radiotherapy equipment, the control device in the radiotherapy equipment will send an emergency close-source instruction to the single-axis drive device.

[0050] However, due to the complex emergency close-source procedure and high instability, if the program fails to switch the single-axis drive device into the emergency close-source mode, or the control link of the single-axis drive device is abnormal, at this time, the single-axis drive device cannot normally control the source carrier to perform emergency close-source, resulting in uncontrollable radiation.

[0051] Based on this, the present application intends to provide a radiation source control system and method. By providing multiple drive devices, when the source carrier fails to open or close the source under the control of at least one drive device, the source carrier can be controlled by other drive devices to perform emergency close-source, ensuring normal emergency close-source of the source carrier.

[0052] Please refer to Figure 1 which is a side view of a radiation source control system provided by an embodiment of the present application. As Figure 1As shown in the figure, the radiation source control system includes: a housing 10 (not shown in the figure), a source carrier 20 disposed within the housing 10, a plurality of driving devices 30, and a control device 40 (not shown in the figure). The plurality of driving devices 30 are all disposed on the housing 10, and the driving ends of the plurality of driving devices 30 are all matched with the position of the source carrier; the control device 40 is connected to the plurality of driving devices 30 and is used to control the mutual coupling between the plurality of driving devices 30 so that the mutually coupled plurality of driving devices 30 control the source carrier to rotate to turn on the source; it is also used to control the decoupling between the plurality of driving devices 30 so that one of the driving devices 30 among the decoupled plurality of driving devices 30 controls the source carrier 20 to rotate to turn off the source.

[0053] In this embodiment, the radiation source control system is a system for controlling the source carrier to turn on or off the source in a radiotherapy device. The source carrier 20 is a structure on which a plurality of radiation sources are installed. The plurality of radiation sources on the source carrier 20 can emit beams. The radiotherapy device further includes a collimator. The beams emitted by the plurality of radiation sources of the source carrier 20 intersect at a common focus after passing through the collimation holes on the collimator. Placing the patient's lesion at the common focus can perform radiotherapy on the patient's lesion.

[0054] The plurality of driving devices 30 are located at different orientations of the source carrier 20, and the driving ends of the plurality of driving devices 30 are all matched with the position of the source carrier 20. The control device 40 sends a coupling instruction to the plurality of driving devices 30 so that the plurality of driving devices 30 are mutually coupled, and the mutually coupled plurality of driving devices 30 can rotate synchronously at a preset speed. The control device 40 sends the open-source position information to one of the plurality of driving devices 30. After obtaining the transmission power, the plurality of driving devices 30 jointly drive the source carrier 20 to rotate forward based on the open-source position information until the rotation to turn on the source is in place. After turning on the source is in place, the beams of the plurality of radiation sources will pass through the collimation holes of the collimator and intersect at a common focus, and radiotherapy on the patient's lesion will start.

[0055] It should be noted that since the plurality of driving devices 30 are mutually coupled, the control device 40 only needs to send the open-source position information to one of the driving devices 30 to drive the source carrier 20 to rotate until it reaches the open-source in-place position. Of course, the control device 40 sending the open-source position information to the plurality of driving devices 30 does not affect the implementation of this solution.

[0056] When the source carrier open source fails or after radiotherapy ends, the control device 40 sends a decoupling instruction to multiple drive devices 30 to control the decoupling between the multiple drive devices 30. After decoupling, the multiple drive devices 30 rotate independently and no longer affect each other. After the multiple drive devices 30 are decoupled, the closed-source position information is sent to one drive device 30. After obtaining the transmission power, this drive device 30 drives the source carrier 20 to rotate in the reverse direction based on the closed-source position information until the rotation to close the source is in place. After closing the source is in place, the beams of multiple radiation sources will no longer pass through the collimation holes of the collimator.

[0057] In the case where the above-mentioned one drive device 30 fails to drive the source carrier to close the source, the control device 40 can send an emergency closed-source instruction to other drive devices 30 among the multiple drive devices 30. The drive device 30 that receives the emergency closed-source instruction obtains the transmission power and drives the source carrier 20 to rotate in the reverse direction until after the rotation to close the source is in place, it is determined that the source carrier has successfully closed the source.

[0058] In an alternative embodiment, if there are two drive devices 30 in the radiation source control system, namely the main drive device 301 and the slave drive device 302, the control device 40 is respectively connected to the main drive device 301 and the slave drive device 302, and is used to control the slave drive device 302 to drive the source carrier 20 to close the source in the case where the control of the main drive device 301 to drive the source carrier 20 to close the source fails.

[0059] In this embodiment, during the open source process, the control device 40 controls the mutual coupling between the main drive device 301 and the slave drive device 302, and sends the open source position information to the main drive device 301. The main drive device 301 and the slave drive device 302 jointly control the source carrier 20 to rotate forward to open the source based on the open source position information after obtaining the transmission power.

[0060] When the source carrier 20 open source fails or when the treatment time of the radiotherapy device ends, the control device 40 controls the decoupling between the main drive device 301 and the slave drive device 302, and sends the closed-source position information to the main drive device 301. After obtaining the transmission power, the main drive device 301 controls the source carrier 20 to rotate in the reverse direction to close the source based on the closed-source position information.

[0061] When the main drive device 301 fails to control the source carrier 20 to rotate in the reverse direction to close the source, the control device 40 sends the closed-source position information to the slave drive device 302. After obtaining the transmission power, the slave drive device 302 controls the source carrier 20 to rotate in the reverse direction for emergency closed source based on the closed-source position information.

[0062] Based on the above embodiments, the embodiments of the present application explain the structure of the drive device. Please refer to Figure 2 , which is a schematic structural diagram of a drive device provided by the embodiments of the present application, as shown in Figure 2As shown, the driving device 30 includes: a driving gear 31 and a coupling driving device 32.

[0063] The driving gear 31 is matched with the gear position provided on the source carrier 20. The coupling driving device 32 is in transmission connection with the driving gear 31. The control device 40 is connected to a plurality of coupling driving devices 32 and is used to control the mutual coupling between the plurality of coupling driving devices 32, so as to drive the gear provided on the source carrier 20 to rotate through the driving gear 31 for opening the source; it is also used to control the decoupling between the plurality of coupling driving devices 32, so that one of the decoupled coupling driving devices 32 drives the gear provided on the source carrier 20 to rotate through the driving gear 31 for closing the source.

[0064] In this embodiment, a gear is provided on the source carrier 20. The driving gear 31 of the driving device 30 meshes with the gear on the source carrier 20, so as to drive the radiation source on the source carrier 20 to rotate through the rotation of the gear. The plurality of coupling driving devices 32 can be coupled or decoupled. When the source carrier opens the source, the control device 40 controls the mutual coupling between the plurality of coupling driving devices 32, and the plurality of mutually coupled coupling driving devices 32 can rotate synchronously at a preset speed. The control device 40 sends the open-source position information to one of the coupling driving devices 32. Since the plurality of coupling driving devices 32 are mutually coupled and coupled according to the set electronic gear ratio, the other coupling driving devices 32 obtain the corresponding proportional positions and rotate synchronously. After obtaining the transmission power, the plurality of coupling driving devices 32 drive the gear of the source carrier 20 to rotate forward through the driving gear 31 for opening the source.

[0065] When the source carrier closes the source, the control device 40 controls the decoupling between the plurality of coupling driving devices 32. After the plurality of coupling driving devices 32 are decoupled, after the decoupling, the plurality of coupling driving devices 32 rotate independently and no longer affect each other. The closing-source position information is sent to one of the coupling driving devices 32, and this coupling driving device 32 drives the gear of the source carrier 20 to rotate reversely through the driving gear 31 based on the closing-source position information after obtaining the transmission power for closing the source.

[0066] When the source carrier fails to close the source under the drive of this coupling driving device 32, the control device 40 sends an emergency closing-source instruction to the other coupling driving devices 32, and the coupling driving device 32 that receives the emergency closing-source instruction drives the gear of the source carrier 20 to rotate reversely through the driving gear 31 after obtaining the transmission power for emergency closing the source.

[0067] In some embodiments, the coupling driving device 32 may include a clutch, a servo driver, and a motor, or may be other forms of coupling driving devices.

[0068] Taking the coupling drive device composed of a clutch, a servo driver, and an electric motor as an example, the driving principle of the drive device will be illustrated as follows. As Figure 2 shown, the coupling drive device 32 includes: a clutch 321, an electric motor 323, and a servo driver 322 (not shown in the figure). One end of the clutch 321 is connected to the drive gear 31, the other end of the clutch 321 is connected to the electric motor 323, and the electric motor 323 is connected to the servo driver 322. The control device 40 is connected to the servo driver 322 and is used to control the mutual coupling between multiple servo drivers 322; the control device 40 is also connected to multiple clutches 321 and is used to control the suction of both ends of multiple clutches 321, so that the mutually coupled servo drivers 322 drive the gears provided on the source carrier 20 to rotate through the drive gear 31 to open the source.

[0069] The control device 40 is also used to control the decoupling between multiple servo drivers 322 and control the suction of both ends of one clutch 321, so that the servo driver 322 corresponding to the clutch 321 with both ends suctioned drives the gear provided on the source carrier 20 to rotate through the drive gear 31 to close the source.

[0070] In this embodiment, the control device 40 can control the rotation of the electric motor 323 through the servo driver 322. The control device 40 can also control the suction of both ends of the clutch 321. After the suction of both ends of the clutch 321, the drive gear 31 obtains the transmission power from the electric motor 323 to rotate.

[0071] Specifically, the control device 40 sends an electronic coupling instruction to multiple servo drivers 322 to achieve the electronic coupling between multiple servo drivers 322. According to the electronic gear ratio set in the electronic coupling instruction, the control device 40 sends a proportional relationship pulse signal to multiple servo drivers 322, and multiple electric motors 323 perform proportional relationship position movements; the magnitude of the electronic gear ratio determines the transmission speed between the coupled drive gears 31. The electronic gear has high flexibility, and there is no wear caused by the direct coupling between mechanical gears and the error caused by the gear clearance. It has the advantages of precise transmission control, high operating efficiency, and simple structure.

[0072] During the source opening process, the control device 40 controls the mutual coupling between the servo drivers 322 of multiple coupling drive devices 32. The control device 40 drives multiple electric motors 323 to rotate synchronously and forward through multiple servo drivers 322. The control device 40 also controls the mutual suction of both ends of the clutches 321 of multiple coupling drive devices 32 to obtain the transmission power from the electric motor 323, drive multiple drive gears 31 to mesh with the gears of the source carrier 20 and rotate forward, so as to achieve the source opening of the source carrier.

[0073] During the source closing process, the control device 40 controls the decoupling between the servo drivers 322 of the multiple coupling drive devices 32, disconnects them from the clutch, and drives a motor 323 to rotate in the reverse direction through one servo driver 322. The control device 40 also controls the two ends of the clutch 321 corresponding to this servo driver 322 to engage, so as to obtain the transmitted power from the motor 323, drive the corresponding drive gear 31 to engage with the gear of the source carrier 20 and rotate in the reverse direction, so as to realize the source closing of the source carrier.

[0074] When the source closing fails, the control device 40 controls the decoupling between the servo drivers 322 of the multiple coupling drive devices 32 and disconnects the main clutch. The control device 40 sends the source closing position information to the servo drivers 322 of the other coupling drive devices 32, drives the corresponding motors 323 to rotate in the reverse direction, and the control device 40 also controls the two ends of the corresponding clutch 321 to engage, so as to obtain the transmitted power from the motor 323, drive the corresponding drive gear 31 to engage with the gear of the source carrier 20 and rotate in the reverse direction, so as to realize the emergency source closing of the source carrier.

[0075] The source control system provided by the embodiment of the present application includes: a housing, a source carrier arranged in the housing, multiple drive devices, and a control device. The multiple drive devices are all arranged on the housing, and the drive ends of the multiple drive devices are all matched with the position of the source carrier; the control device is connected to the multiple drive devices and is used to control the mutual coupling between the multiple drive devices, so that the mutually coupled multiple drive devices control the source carrier to rotate and open the source; it is also used to control the decoupling between the multiple drive devices, and control the source carrier to rotate and close the source through one of the decoupled multiple drive devices. In the solution of the embodiment of the present application, by providing multiple drive devices, when the source opening or closing fails under the control of at least one drive device of the source carrier, the source carrier can be controlled to perform emergency source closing through other drive devices, ensuring the normal emergency source closing of the source carrier and guaranteeing the safety of the use of radiotherapy equipment.

[0076] On the basis of the above embodiment, the embodiment of the present application further provides a source control system, which can judge whether the source carrier has opened the source in place and when the source can be closed.

[0077] Please refer to Figure 3 , which is a schematic block diagram of a source control system provided by an embodiment of the present application. As Figure 3 shown, the source control system further includes a sensor 50 and a timer 60.

[0078] Both the sensor 50 and the timer 60 are arranged inside the housing. The sensor 50 is located at the open-source position of the source carrier 20 to detect whether the source carrier is in place for open-sourcing. Both the sensor 50 and the timer 60 are connected to the control device 40. After receiving the open-source in-place signal sent by the sensor 50, the control device 40 controls the timer 60 to start timing and obtains the time-out instruction sent by the timer 60.

[0079] In this embodiment, the sensor 50 is a position sensor, which is arranged at the open-source in-place position of the source carrier to detect whether the source carrier 20 is in place for open-sourcing. After the source carrier 20 is in place for open-sourcing, the radiotherapy device starts treatment. The position sensor sends an open-source in-place signal to the control device 40. The control device 40 controls the timer 60 to start timing based on the open-source in-place signal. The timing time of the timer 60 is the treatment time of the radiotherapy device. After the timing time of the timer 60 reaches the first preset time, it sends a time-out instruction to the control device 40 to instruct the control device 40 that the radiotherapy time has ended. Among them, the first preset time is the irradiation time for treating the patient's lesion, which can be analyzed by the control device 40 for the patient's medical record to determine the irradiation time and send the irradiation time to the timer 60. After the radiotherapy device instruction ends, the control device 40 controls the source carrier 20 to close the source through the driving device 30.

[0080] To avoid a timing failure of the timer 60, a slave timer 70 can also be set. When the position sensor reaches the first preset position, it sends a position signal to the control device 40, and the control device 40 controls the slave timer 70 to start timing. Among them, the first preset position is a specified position before the source carrier is in place for open-sourcing. The slave timer 70 starts timing earlier than the timer 60. Therefore, the timing time of the slave timer 70 is also longer than that of the timer 60. When a timing failure occurs in the timer 60, after the timing time of the slave timer 70 reaches the second preset time, it sends a time-out instruction to the control device 40 to instruct the control device 40 that the radiotherapy time has ended. Among them, the second preset time is longer than the first preset time. The timing failure of the timer 60 can be that the timer 60 does not send a time-out instruction to the control device 40 after its timing time reaches the first preset time, or the timing time of the slave timer 70 has reached the second preset time but the timing time of the timer 60 has not reached the first preset time yet.

[0081] The radiation source control system provided by the embodiment of the present application further includes a sensor and a timer. Both the sensor and the timer are arranged inside the housing. The sensor is located at the open-source position of the source carrier to detect whether the source carrier is in place for opening the source. Both the sensor and the timer are connected to the control device. After receiving the signal indicating that the source is opened in place sent by the sensor, the control device controls the timer to start timing and obtains the instruction indicating the end of the time sent by the timer. The solution of the embodiment of the present application can detect whether the source carrier is in place for opening the source to control the source carrier to start treatment after the source is opened in place, and can also detect the treatment time of the source carrier through the timer and make the control device control the source carrier to close the source after the treatment time arrives, ensuring the safety of the treatment process.

[0082] Based on the above radiation source control system, the embodiment of the present application provides a radiation source control method applied to the control device in the above radiation source control system. Please refer to Figure 4 , which is a schematic flowchart of a radiation source control method provided by the embodiment of the present application. As Figure 4 shown, the method includes:

[0083] S10: Control the main drive device and the slave drive device to be coupled to each other to drive the source carrier to open the source through the main drive device and the slave drive device.

[0084] In this embodiment, before the treatment starts, the main drive device and the slave drive device are in a decoupled state. After the treatment starts, the control device sends a coupling instruction to the main drive device and the slave drive device to make the main drive device and the slave drive device coupled to each other and drive the source carrier to open the source.

[0085] Exemplarily, as Figure 3 shown, taking the main drive device including a main drive gear, a main clutch, a main servo driver, and a main motor, and the slave drive device including a slave drive gear, a slave clutch, a slave servo driver, and a slave motor as an example, the process of the control device controlling the source carrier to open the source will be described in detail.

[0086] Before the treatment starts, the main servo drive and the slave servo drive are in a decoupled state; after the treatment starts, the control device sends a coupling instruction to the main servo drive and the slave servo drive to control the mutual coupling between the main servo drive and the slave servo drive, and drives the main motor to rotate forward through the main servo drive, and drives the slave motor to rotate forward through the slave servo drive. Among them, due to the mutual coupling between the main servo drive and the slave servo drive, the main motor and the slave motor rotate forward synchronously. The control device also controls the main clutch and the slave clutch to engage to respectively obtain the transmission power from the main motor and the slave motor, and synchronously drives the gear of the source carrier to rotate forward through the main drive gear and the slave drive gear, realizing the source opening of the source carrier. Among them, the control device sends the source opening position information to the servo drive according to the source opening in-place position required by the source carrier during the treatment, so that the servo drive determines the angular displacement of rotation based on the source opening position information.

[0087] S20: Obtain the source opening in-place signal and control the timer to start timing.

[0088] In this embodiment, the sensor of the radiation source control system is set at the source opening in-place position of the source carrier to detect whether the source carrier has opened the source in place, and sends a source opening in-place signal to the control device after the source carrier has opened the source in place. The control device is also connected with a timer to control the timer to start timing after receiving the source opening in-place signal.

[0089] S30: If a timing-out instruction sent by the timer is received, then control the decoupling between the main drive device and the slave drive device, and control the main drive device to drive the source carrier to rotate to close the source.

[0090] In this embodiment, the control device analyzes the medical record of the patient to determine the irradiation time required for the patient's treatment, and sends the irradiation time to the timer. After the timing time reaches the irradiation time, the timer determines that the patient's treatment time is over and sends a timing-out instruction to the control device.

[0091] The control device sends a decoupling instruction to the main servo drive and the slave servo drive according to the timing-out instruction to control the decoupling between the main servo drive and the slave servo drive and the disconnection of the slave clutch. The main servo drive drives the main motor to rotate reversely. The main drive gear can receive the transmission power from the main motor, while the slave drive gear cannot receive the transmission power from the slave motor, so as to drive the gear of the source carrier to rotate reversely through the main drive gear, realizing the source closing of the source carrier.

[0092] The source control method provided by the embodiment of the present application controls the mutual coupling between the main driving device and the slave driving device, so as to drive the source carrier to open the source through the main driving device and the slave driving device, obtain the signal indicating that the source opening is in place, control the timer to start timing, and if the time-out instruction sent by the timer is received, then control the decoupling between the main driving device and the slave driving device, and control the main driving device to drive the source carrier to rotate to close the source. The solution of the embodiment of the present application can control the source carrier to open and close the source through multiple driving devices, ensuring the normal opening or closing of the source carrier.

[0093] On the basis of the above embodiment, the embodiment of the present application further provides a source control method, and the method further includes:

[0094] Based on the abnormal signal of the source carrier, control the slave driving device to drive the source carrier to rotate to close the source.

[0095] In this embodiment, when an abnormality occurs during the source opening or closing of the source carrier, the control device, based on the received abnormal signal, controls the main clutch to disengage and the slave clutch to engage, so that the slave driving gear can receive the transmission power from the slave motor, while the main driving gear cannot receive the transmission power from the main motor, thereby driving the gear of the source carrier to rotate in the reverse direction through the slave driving gear, realizing the emergency closing of the source carrier.

[0096] In a possible implementation manner, the abnormal signal of the source carrier is: an abnormal signal of failed source opening. The control device determines whether the source carrier reaches the source opening in-place position based on the source opening position signal sent by the source opening position sensor. If the source carrier does not reach the source opening in-place position, an abnormal signal of failed source opening is generated.

[0097] In this embodiment, the source opening position sensor is arranged at the source opening in-place position of the source carrier to detect the source opening position of the source carrier, and send a source opening position signal to the control device based on the source opening position of the source carrier. The control device then determines whether the source opening position of the source carrier is the source opening in-place position according to the source opening position signal. If not, it determines that the source opening position of the source carrier is abnormal and generates an abnormal signal of failed source opening of the source carrier.

[0098] In another possible implementation manner, the abnormal signal of the source carrier is: an abnormal signal of failed source closing. The control device determines whether the source carrier reaches the source closing in-place position based on the source closing position signal sent by the source closing position sensor; if the source carrier does not reach the source closing in-place position, an abnormal signal of failed source closing is generated.

[0099] In this embodiment, during the process of the main drive device controlling the source carrier to turn off the source, the source-off position sensor is arranged at the source-off in-place position of the source carrier to detect the source-off position of the source carrier, and send a source-off position signal to the control device based on the source-off position of the source carrier. The control device then determines whether the source-off position of the source carrier is the source-off in-place position according to the source-off position signal. If not, it determines that the source-off position of the source carrier is abnormal, the main drive device fails to control the source carrier to turn off the source, and an abnormal signal indicating the failure of the source carrier to turn off the source is generated.

[0100] In another possible implementation manner, the abnormal signal of the source carrier is: an abnormal signal of source-off timeout. If the control device receives a timeout instruction sent by the timer, it generates an abnormal signal of source-off timeout.

[0101] In this embodiment, when the main drive device controls the source carrier to turn off the source, after it is determined that the source carrier has turned off the source, the control device controls the timer to stop timing. According to the irradiation time of the source carrier and the time required to turn off the source, a first timeout time is set in the timer. If the timing time of the timer exceeds the first timeout time and still does not stop timing, the timer sends a timeout instruction to the control device, and the control device determines that the main drive device fails to control the source carrier to turn off the source based on the timeout instruction, and generates an abnormal signal of source-off timeout.

[0102] To avoid timing failures of the timer, a slave timer can also be set in the radiation source control system. When a timing failure occurs in the timer, after the timing time of the slave timer exceeds the second timeout time, it sends a timeout instruction to the control device to indicate that the main drive device fails to control the source carrier to turn off the source, and generates an abnormal signal of source-off timeout. Among them, the second timeout time is longer than the first timeout time. The timing failure of the timer can be that the timer does not send a timeout instruction to the control device after the timing time reaches the first timeout time, or the timing time of the slave timer has exceeded the second timeout time but the timing time of the timer still has not reached the first timeout time.

[0103] The radiation source control method provided by the embodiment of the present application controls the slave drive device to drive the source carrier to rotate and turn off the source based on the abnormal signal of the source carrier. The solution of the embodiment of the present application can realize that when the main drive device fails to control the source carrier to turn off the source or the source carrier fails to turn on the source, the slave drive device controls the source carrier to perform an emergency turn-off of the source, ensuring the normal emergency turn-off of the source carrier and guaranteeing the safety of the use of the radiotherapy equipment.

[0104] Based on the radiation source control system and the radiation source control method of the above embodiments, the embodiments of the present application further provide a radiotherapy device, including the radiation source control system, the source carrier, and the collimator in the above embodiments; multiple driving devices of the radiation source control system are coupled to each other, so that the multiple coupled driving devices control the source carrier to rotate to turn on the source, and multiple radiation sources of the source carrier are focused through the collimation holes of the collimator for treatment when the source is turned on. The multiple driving devices of the radiation source control system are decoupled, so as to control the source carrier to rotate to turn off the source through one of the decoupled driving devices, and the multiple radiation sources of the source carrier no longer focus through the collimation holes of the collimator after the source is turned off, thereby ending the treatment.

[0105] The above are only the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A radiation source control system, characterized in that, Including: A housing, a source carrier disposed within the housing, a plurality of driving devices, and a control device; The plurality of driving devices are all disposed on the housing, and the driving ends of the plurality of driving devices are all matched with the position of the source carrier; The control device is connected to the plurality of driving devices and is configured to control the plurality of driving devices to rotate synchronously at a preset speed after being coupled to each other, so that the plurality of driving devices that are coupled to each other control the source carrier to rotate and turn on the source; It is also configured to control the plurality of driving devices to rotate independently after being decoupled, so as to control the source carrier to rotate and turn off the source by one of the driving devices among the plurality of driving devices that are decoupled; The driving device includes: a driving gear and a coupling driving device; The driving gear is matched with the position of the gear provided on the source carrier; The coupling driving device is in transmission connection with the driving gear; The control device is connected to the plurality of coupling driving devices and is configured to control the plurality of coupling driving devices to be coupled to each other, so as to drive the gear provided on the source carrier to rotate through the driving gear to turn on the source; it is also configured to control the plurality of coupling driving devices to be decoupled, so that one of the plurality of coupling driving devices that are decoupled drives the gear provided on the source carrier to rotate through the driving gear to turn off the source.

2. The radiation source control system according to claim 1, characterized in that, The coupling driving device includes: a clutch, a servo driver, and a motor; One end of the clutch is connected to the driving gear, the other end of the clutch is connected to the motor, and the motor is connected to the servo driver; The control device is connected to the servo driver and is configured to control the plurality of servo drivers to be coupled to each other; the control device is also connected to the plurality of clutches and is configured to control the two ends of the plurality of clutches to be attracted, so that the coupled servo drivers drive the gear provided on the source carrier to rotate through the driving gear to turn on the source; The control device is also configured to control the plurality of servo drivers to be decoupled and control the two ends of one clutch to be attracted, so that the servo driver corresponding to the clutch with the two ends attracted drives the gear provided on the source carrier to rotate through the driving gear to turn off the source.

3. The radiation source control system according to claim 1, characterized in that, The radiation source control system further includes: a sensor and a timer; The sensor and the timer are both disposed within the housing, and the sensor is located at the source-on position of the source carrier to detect whether the source carrier reaches the source-on position; The sensor and the timer are both connected to the control device. After receiving the source-on signal sent by the sensor, the control device controls the timer to start timing and obtains the time-up instruction sent by the timer.

4. The radiation source control system according to claim 1, characterized in that, The plurality of driving devices include: a main driving device and a slave driving device; The control device is respectively connected to the main driving device and the slave driving device and is configured to control the slave driving device to drive the source carrier to turn off the source in the case where the main driving device fails to drive the source carrier to turn off the source.

5. A radiation source control method, characterized in that, Adopt the radiation source control system according to any one of claims 1-4; The method includes: Control the main drive device and the slave drive device to rotate synchronously at a preset speed after being coupled to each other, so as to drive the source carrier to open source through the main drive device and the slave drive device; Obtain the open-source in-place signal and control the timer to start timing; If the time-out instruction sent by the timer is received, then control the decoupling between the main drive device and the slave drive device to rotate independently, and control the main drive device to drive the source carrier to rotate off; The method further includes: Based on the abnormal signal of the source carrier, control the slave drive device to drive the source carrier to rotate off source.

6. The method according to claim 5, characterized in that, Before the control of the slave drive device to drive the source carrier to rotate off source based on the abnormal signal of the source carrier, the method further includes: If the time-out instruction sent by the timer is received, then generate an abnormal signal of time-out for turning off the source.

7. The method according to claim 5, characterized in that, Before the control of the slave drive device to drive the source carrier to rotate off source based on the abnormal signal of the source carrier, the method further includes: Based on the source-off position signal sent by the source-off position sensor, determine whether the source carrier reaches the source-off in-place position; If the source carrier does not reach the source-off in-place position, then generate an abnormal signal of source-off failure.

8. The method according to claim 5, characterized in that, Before the control of the slave drive device to drive the source carrier to rotate off source based on the abnormal signal of the source carrier, the method further includes: Based on the source-open position signal sent by the source-open position sensor, determine whether the source carrier reaches the source-open in-place position; If the source carrier does not reach the source-open in-place position, then generate an abnormal signal of source-open failure.

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