Radioactive source switch control system
By introducing redundant control and redundant timers into the radiotherapy equipment, the loss of control caused by communication interruption of the radio source control system and timer failure is solved, ensuring the source switches during the radiation therapy process are safe and controllable, and the safety of the equipment is improved sex.
Patent Information
- Application Number
- CN202421046399.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-05-14
AI Technical Summary
The radio source control system in existing radiotherapy equipment has problems with out-of-control in the communication link and open-source timing link, resulting in the radio source being out of control due to communication interruption or timer failure, threatening the safety of patients.
A radio source switch control system was designed, adopting redundant control measures, including the main controller, intelligent slave controller, slip ring, source switch servo driver, source switch servo motor and redundant timer, ensuring that the main controller is When communication with the servo drive is interrupted or the timer fails, the intelligent slave and redundant timer can take over the control to prevent the radiation source from getting out of control.
It effectively avoids the out-of-control state caused by communication interruption or timer failure of the radio source, ensures that the source switches during the radiation treatment process are safe and controllable, and improves the safety of radiotherapy equipment.
Smart Images
Figure CN222232893U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the medical field, in particular to a radiation source switch control system. Background Art
[0002] The utility model relates to a radiation source safety control technology for radiotherapy equipment, and in particular to a control system for improving the safety of using radiation sources in radiotherapy equipment. In the field of stereotactic radiotherapy using a physical source as a radiation source, the correct and safe use of the radiation source is of vital importance and is directly related to the treatment effect and treatment safety of patients. Although the existing radiotherapy equipment using a physical source as a radiation source has certain safety protection functions in the control system of the radiation source, such as when there are problems in the chain links such as equipment failure, shielding door opening, and control system failure, the radiation source can be controlled and closed in time, but there is a lack of effective control strategies for the communication link and open source timing link that are prone to problems in the entire radiation source control system. When there is a problem in the communication between the controller and the switch source servo driver, the actuator of the control source switch cannot receive the command from the controller, and the control of the source switch is in an out-of-control state. When the open source timer fails, the timing failure causes the source switch to be in an open state due to time error, thereby posing a threat to patient safety. Therefore, developing a more comprehensive and intelligent radiation source safety control system is the key to improving the safety of radiotherapy. Utility Model Content
[0003] In order to solve the above-mentioned technical problems existing in the background technology, the utility model provides a radiation source switch control system, which adds redundant control to the current single radiation source switch control system to solve the problem of the radiation source opening and closing being out of control due to communication interruption and timer failure in the radiation source control system.
[0004] The technical solution of the utility model is: the utility model is a radiation source switch control system, which is special in that: the radiation source switch control system includes a main controller, an intelligent slave station controller, a source switch servo driver and a source switch servo motor, the main controller is connected to the intelligent slave station controller, the intelligent slave station controller is connected to the source switch servo driver, and the source switch servo driver is connected to the source switch servo motor.
[0005] Furthermore, a slip ring is provided between the main controller and the intelligent slave controller.
[0006] Furthermore, the radiation source switch control system also includes two timers, and the two timers are respectively connected to the main controller.
[0007] Furthermore, each of the two timers is connected to a timing controller, and the timing controller is used to set the time for the timer.
[0008] Furthermore, the main controller and the two timers are arranged in an electrical cabinet in the control room.
[0009] Furthermore, the intelligent slave controller, the slip ring, the source switch servo driver and the source switch servo motor are all arranged on a turntable of the treatment room equipment.
[0010] The radiation source switch control system provided by the utility model adopts redundant control for the control of the driving system, thereby preventing the problem of radiation source out of control caused by the interruption of communication between the main controller and the source switch control system.
[0011] The utility model adopts two redundant timers for the timing system, thereby solving the problem of the radiation source being out of control when one timer fails.
[0012] The utility model is used for switch source control during radiotherapy, solves the problem of radiation source shutdown loss caused by communication interruption of the drive system and timer failure in the timing system in the source switch control system, and ensures the safety and controllability of the source switch during radiotherapy. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a system schematic diagram of the utility model;
[0014] Figure 2 It is a schematic diagram of two timers of the utility model;
[0015] Figure 3 This is a schematic diagram of source switch control of the utility model. DETAILED DESCRIPTION
[0016] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0017] See also Figure 1 The structure of the specific embodiment of the utility model includes a main controller, an intelligent slave station controller, a source switch servo driver and a source switch servo motor. The main controller is connected to the intelligent slave station controller, the intelligent slave station controller is connected to the source switch servo driver, and the source switch servo driver is connected to the source switch servo motor.
[0018] A slip ring is set between the main controller and the intelligent slave controller. The slip ring is an electrical component that provides power and control signals for the source switch control system on the rotating disk of the equipment and the main control system of the electrical cabinet. The power supply from the electrical cabinet in the control room and the signal of the main controller are transmitted to the intelligent slave controller and the source switch servo driver and source switch servo motor on the turntable through the slip ring. The transmission signal includes the communication signal of the main controller to the source switch.
[0019] When the communication between the main controller and the intelligent slave controller is normal, the source switch is controlled by the main controller, and the intelligent slave controller executes the source switch control command of the main controller. When the communication between the main controller and the intelligent slave controller through the slip ring fails, the intelligent slave controller immediately takes over the control of the source switch after detecting the communication failure with the main controller, and executes the radiation source shutdown with the communication failure signal as the trigger signal.
[0020] See also Figure 2 The utility model also includes two redundant timers, which are arranged in the electrical cabinet of the control room, and two small controllers are used for timing. The two timers are respectively connected to a timing controller, and the timing controller is used to set the time for the timer.
[0021] See also Figure 3 The main controller sends the same timing time and timing start trigger signal at the same time. When the equipment is open, the two timers are synchronized, and the timing time is fed back to the main controller in real time. The main controller compares and monitors the timing time of the two timers in real time. When the time difference between the two timers exceeds the set allowable deviation, the timer is judged to be faulty and the source is turned off. When the two timers are timing normally, any one of them reaches the set timing time, which triggers the source to be turned off. The source is triggered when the equipment fails or stops suddenly.
[0022] When the utility model is working, during the radiotherapy process, the treatment plan will give the treatment irradiation time, the source switch control system will start timing after turning on the radiation source switch according to the treatment plan, and the source will be triggered to shut down when the planned irradiation time reaches the set time of the treatment plan. During the treatment process, two redundant timers start timing at the same time, and no matter which timer reaches the planned irradiation time, the source will be triggered to shut down. During the treatment timing process, if one of the timers fails, the real-time timing comparison of the two timers will immediately trigger the source shutdown control.
[0023] The content of the utility model and the technical content not specifically described in the above embodiments are the same as the prior art. The above are only specific implementation methods disclosed by the utility model, but the protection scope disclosed by the utility model is not limited thereto. The protection scope disclosed by the utility model shall be subject to the protection scope of the claims.
Claims
1. A radiation source switch control system, characterized in that: The radiation source switch control system includes a main controller, an intelligent slave station controller, a source switch servo driver and a source switch servo motor. The main controller is connected to the intelligent slave station controller, the intelligent slave station controller is connected to the source switch servo driver, and the source switch servo driver is connected to the source switch servo motor.
2. The radiation source switch control system according to claim 1, characterized in that: A slip ring is arranged between the main controller and the intelligent slave station controller.
3. The radiation source switch control system according to claim 2, characterized in that: The radiation source switch control system also includes two timers, and the two timers are respectively connected to the main controller.
4. The radiation source switch control system according to claim 3, characterized in that: The two timers are respectively connected to a timing controller, and the timing controller is used to set the time for the timer.
5. The radiation source switch control system according to claim 4, characterized in that: The main controller and the two timers are all arranged in an electrical cabinet in the control room.
6. The radiation source switch control system according to any one of claims 1 to 5, characterized in that: The intelligent slave controller, slip ring, source switch servo driver and source switch servo motor are all arranged on a turntable of the treatment room equipment.