CT dynamic balance automatic correction method and system

Abstract

The invention belongs to the technical field of CT scanners. The CT dynamic balance automatic correction method comprises the following steps: acquiring decomposition results of the sizes and positions of weights to be added / subtracted of a balance surface I and a balance surface II of a CT scanner main body; according to the decomposition result of the size and the position of the balance weight to be added / subtracted of the balance surface I and the balance surface II, the unbalance amount I of the balance surface I and the unbalance amount II of the balance surface II are obtained; adjusting an initial position of a mass body I on the balance surface I according to the unbalance amount I of the balance surface I to obtain a target position of the mass body I; and adjusting the initial position of the mass body II on the balance surface II according to the unbalance amount II of the balance surface II to obtain the target position of the mass body II. According to the method, the mass bodies of the balance surface I and the balance surface II can be adjusted, so that the balance and the stability of a CT scanner rotating system are ensured.

Description

Technical Field

[0001] The present application belongs to the technical field of CT scanners, and in particular, relates to a method and system for automatic correction of CT dynamic balance. Background Art

[0002] CT scanners are high-precision medical imaging devices, and their stability and precision are extremely important to ensure image quality and diagnostic accuracy. Key components of CT scanners, such as X-ray tubes and detector systems, may have errors during the manufacturing and assembly process, resulting in imbalance when running at high speeds. This imbalance can cause vibration, noise, and image distortion, which in turn affects the accuracy of diagnostic results.

[0003] In order to solve these problems and ensure the normal operation and image quality of CT scanners, dynamic balancing is a key step. Traditionally, the method to eliminate imbalance is to add or remove weight from the equipment. Although this method is simple and direct, it has some disadvantages in actual operation, including cumbersome process, time-consuming and labor-intensive, and inconvenient to carry large mass weights. In addition, the requirements for operators and locations are also high, which limits the efficiency and practicality of traditional methods. Summary of the invention

[0004] Based on this, it is necessary to provide a CT dynamic balance automatic correction method and system to address the above technical issues.

[0005] In a first aspect, the present application provides a method for automatic correction of CT dynamic balance, comprising: Obtaining decomposition results of the size and position of the weights to be added / reduced on the balance plane I and the balance plane II of the CT scanner body; According to the decomposition results of the size and position of the counterweight to be added / reduced on the balancing plane I and the balancing plane II, the unbalance amount I of the balancing plane I and the unbalance amount II of the balancing plane II are obtained; According to the unbalance amount I of the balancing surface I, adjusting the initial position of the mass body I on the balancing surface I to obtain the target position of the mass body I; According to the unbalance amount II of the balancing surface II, the initial position of the mass body II on the balancing surface II is adjusted to obtain the target position of the mass body II.

[0006] In some practicable embodiments, the step of obtaining the decomposition result of the size and position of the weight to be added / subtracted on the balance plane I and the balance plane II of the CT scanner body includes: Acquiring an initial vibration value of the CT scanner body; Obtaining a vibration value I after adding a test weight I to the balancing surface I; Obtaining the vibration value II after adding the test weight II to the balancing surface II; Determining an influence coefficient according to the initial vibration value, the vibration value I and the vibration value II; According to the influence coefficient, the decomposition results of the size and position of the counterweight to be added / reduced on the balance plane I and the balance plane II are obtained.

[0007] In some practicable manners, the step of obtaining the unbalance amount I of the balancing plane I and the unbalance amount II of the balancing plane II according to the decomposition results of the size and position of the counterweight to be added / subtracted on the balancing plane I and the balancing plane II comprises: The calculation formula of the unbalance amount I of the balancing surface I is:

[0008] in, Indicates the amount of imbalance , Indicates that weight should be added / subtracted. Indicates the target location; The calculation formula of the unbalance amount II of the balancing surface II is:

[0009] in, Indicates the unbalance II, Indicates that weight should be added / subtracted. Indicates the target location.

[0010] In some practicable manners, the step of adjusting the initial position of the mass body I on the balancing plane I according to the unbalance amount I of the balancing plane I to obtain the target position of the mass body I includes: Decomposing the unbalance amount I of the balancing surface I to obtain the moving distance of the mass body I in the first direction and the second direction; According to the moving distance of the mass body 1 in the first direction and the second direction, the target position of the mass body 1 is obtained, wherein the target position calculation formula of the mass body 1 is: ; ; ; ; in, represents the zero vector, Represents mass The unbalance after moving in the first direction, Represents mass The initial imbalance, represents the component of the unbalance I in the first direction, Represents mass The distance traveled in the pipe, Represents mass ; Represents mass The unbalance after moving in the second direction, Represents mass The initial imbalance, represents the component of the unbalance I in the second direction, Represents mass The distance traveled in the pipe, Represents mass .

[0011] In some practicable manners, the step of adjusting the initial position of the mass body II on the balancing plane II according to the unbalance amount II of the balancing plane II to obtain the target position of the mass body II includes: Decomposing the unbalance amount II of the balancing surface II to obtain the moving distance of the mass body II in the first direction and the second direction; According to the moving distance of the mass body II in the first direction and the second direction, the target position of the mass body II is obtained, wherein the target position calculation formula of the mass body II is: ; ; ; ; in, represents the zero vector, Represents mass The unbalance after moving in the first direction, Represents mass The initial unbalanced beam, represents the component of the unbalance II in the first direction, Represents mass The distance traveled in the pipe, Represents mass ; Represents mass The unbalance after moving in the second direction, Represents the mass body The initial imbalance, represents the component of the unbalance II in the second direction, Represents mass The distance traveled in the pipe, Represents mass .

[0012] In a second aspect, a CT dynamic balance automatic correction system is provided, which is applied to the aforementioned CT dynamic balance automatic correction method, and the system comprises: The CT scanner body has a balance plane I and a balance plane II; A plurality of pipes I are arranged on the balancing surface I, a mass body I and a positioning mechanism I are arranged in the pipe I, and the positioning mechanism I can adjust the position of the mass body I in the pipe I; A plurality of pipes II are arranged on the balancing surface II, a mass body II and a positioning mechanism II are arranged in the pipe II, and the positioning mechanism II can adjust the position of the mass body II in the pipe II; A control system is connected to the positioning mechanism I and the positioning mechanism II, wherein the control system is configured as follows: Obtaining decomposition results of the size and position of the counterweight to be added / reduced on the balance plane I and the balance plane II of the CT scanner body; According to the decomposition results of the size and position of the counterweight to be added / reduced on the balancing plane I and the balancing plane II, the unbalance amount I of the balancing plane I and the unbalance amount II of the balancing plane II are obtained; According to the unbalance amount I of the balancing surface I, adjusting the initial position of the mass body I on the balancing surface I to obtain the target position of the mass body I; According to the unbalance amount II of the balancing surface II, the initial position of the mass body II on the balancing surface II is adjusted to obtain the target position of the mass body II.

[0013] In some embodiments, the control system is further configured as follows: Acquiring an initial vibration value of the CT scanner body; Obtaining a vibration value I after adding a test weight I to the balancing surface I; Obtaining the vibration value II after adding the test weight II to the balancing surface II; Determining an influence coefficient according to the initial vibration value, the vibration value I and the vibration value II; According to the influence coefficient, the decomposition results of the size and position of the counterweight to be added / reduced on the balance plane I and the balance plane II are obtained.

[0014] In some practicable manners, the control system decomposes the unbalance amount I of the balancing surface I into the mass body I and the target position corresponding to the pipeline I, and issues an instruction I to the positioning mechanism I according to the mass body I and the target position of the mass body I; The control system also decomposes the unbalance amount II of the balancing surface II into the mass body II and the target position of the mass body II corresponding to the pipeline II, and issues an instruction II to the positioning mechanism II based on the mass body II and the target position.

[0015] In some embodied embodiments, the positioning mechanism I adjusts the mass body I to a target position of the mass body I in response to an instruction I.

[0016] In some embodiments, the positioning mechanism II adjusts the mass body II to a target position of the mass body II in response to an instruction II.

[0017] Beneficial effects: The present application provides a method and system for automatic correction of CT dynamic balance, which obtains the decomposition results of the size and position of the weights to be added / subtracted on the balance plane I and the balance plane II of the CT scanner body; according to the decomposition results of the size and position of the weights to be added / subtracted on the balance plane I and the balance plane II, the unbalance amount I of the balance plane I and the unbalance amount II of the balance plane II are obtained; according to the unbalance amount I of the balance plane I, the initial position of the mass body I on the balance plane I is adjusted to obtain the target position of the mass body I; according to the unbalance amount II of the balance plane II, the initial position of the mass body II on the balance plane II is adjusted to obtain the target position of the mass body II. The above method can realize the adjustment of the mass bodies of the balance plane I and the balance plane II, so as to ensure the balance and stability of the CT scanner rotation system. In addition, based on the CT dynamic balance automatic correction method, the present application also provides a CT dynamic balance automatic correction system, which ensures the balance and stability of the CT scanner rotation system by arranging pipes on the balance plane I and the balance plane II respectively, and setting the mass body in the pipe, and using the positioning mechanism to adjust the position of the mass body in the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A flowchart of a method for automatic correction of CT dynamic balance in one embodiment; Figure 2 It is a front view of a balancing surface I of a CT dynamic balancing automatic correction method in one embodiment; Figure 3A schematic diagram of the unbalance amount of a balancing surface I in a method for automatic correction of CT dynamic balancing in one embodiment; Figure 4 It is a schematic diagram of mass body adjustment of a balancing surface I in a method for automatic correction of CT dynamic balance in one embodiment; Figure 5 It is a schematic diagram of the adjustment of the mass body of the balancing surface I relative to the solid and the fluid in a CT dynamic balancing automatic correction method in an embodiment. DETAILED DESCRIPTION

[0020] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all couplings of one or more related listed items.

[0022] It can be understood that the terms "first", "second", etc. used in the present application can be used in this article to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish the first element from another element.

[0023] Some terms involved in this application are explained below to facilitate understanding of this application: Unbalance is a term used in rotating machinery. It refers to the phenomenon that the mass distribution of rotating parts (such as rotors, shafts, turbines, etc.) is uneven, resulting in the center of mass (center of gravity) not coinciding with the center of the rotating shaft. This uneven mass distribution will generate centrifugal force during rotation, causing vibration.

[0024] like Figure 1 As shown, the present application provides a method for automatic correction of CT dynamic balance, the method comprising: S100, obtaining decomposition results of the size and position of the weight to be added / reduced on the balance plane I and the balance plane II of the CT scanner body.

[0025] Wherein, step S100 may include the following steps: S101, obtaining an initial vibration value of the CT scanner body; S102, obtaining a vibration value I after adding a test weight I to the balancing surface I; S103, obtaining a vibration value II after adding a test weight II to the balancing surface II; S104, determining an influence coefficient according to the initial vibration value, the vibration value I and the vibration value II; S105 , obtaining decomposition results of the size and position of the counterweight to be added / reduced on the balancing plane I and the balancing plane II according to the influence coefficient.

[0026] Exemplarily, in the decomposition results of the size and position of the counterweight to be added / reduced on the balancing plane I and the balancing plane II, the calculation formula for adding / reducing the counterweight is: Initial vibration values ​​of measuring point 1 and measuring point 2

[0027] Add test weight to balance surface I and measure the vibration value after adding test weight , try weight .

[0028] Balance plane II adds test weight and measures vibration value after adding test weight , try weight .

[0029] Calculate the influence coefficient of the balance surface I plus the test weight on the measuring point 1 and the measuring point 2: ; Calculate the influence coefficient of the balance plane II plus the test weight on the measuring points 1 and 2: ; Calculate the weight of the counterweight, , The weights to be added to the balance plane I and balance plane II are as follows: , and the influence coefficient, determine the target position.

[0030] It should be noted that the influence coefficient Respectively represent the influence of adding test weight on balance plane I and balance plane II on the vibration value of measuring point 1 and measuring point 2. These influence coefficients describe the contribution of adding weight on a specific plane to the vibration response.

[0031] By solving the linear equations Indicates the weight that needs to be added on balance plane I and balance plane II. In order to determine the specific location of these weights, the size and direction of the influence coefficient need to be considered.

[0032] S200, obtaining an unbalance amount I of the balancing plane I and an unbalance amount II of the balancing plane II according to the decomposition results of the sizes and positions of the counterweights to be added / reduced on the balancing plane I and the balancing plane II.

[0033] Specifically, the calculation formula for the unbalance amount I of the balancing surface I is:

[0034] in, Indicates the unbalance I, Indicates that weight should be added. Indicates the target location; The calculation formula of the unbalance amount II of the balancing surface II is:

[0035] in, Indicates the unbalance II, Indicates that weight should be added. Indicates the target location.

[0036] S300, adjusting the initial position of the mass body I on the balancing surface I according to the unbalance amount I of the balancing surface I, to obtain a target position of the mass body I.

[0037] Specifically, obtaining the target position of the mass body I may include the following steps: Decomposing the unbalance amount I of the balancing surface I to obtain the moving distance of the mass body I in the first direction and the second direction; According to the moving distance of the mass body 1 in the first direction and the second direction, the target position of the mass body 1 is obtained, wherein the target position calculation formula of the mass body 1 is: ; ; ; ; in, represents the zero vector, Represents mass The unbalance after moving in the first direction, Represents mass The initial imbalance, represents the component of the unbalance I in the first direction, Represents mass The distance traveled in the pipe, Represents mass ; Represents mass The unbalance after moving in the second direction, Represents mass The initial imbalance, represents the component of the unbalance I in the second direction, Represents mass The distance traveled in the pipe, Represents mass Furthermore, the unbalance , represents the mass body, and r represents the radius of the location of the mass body m. Represents the amount of incremental unbalance created by moving mass in the pipe. This means that the incremental unbalance should be offset by the measured unbalance U.

[0038] The first direction and the second direction are directions in different positions, for example, the first direction is a vertical direction, and the second direction is a horizontal direction.

[0039] S400, adjusting the initial position of the mass body II on the balancing surface II according to the unbalance amount II of the balancing surface II to obtain a target position of the mass body II.

[0040] Specifically, the unbalance amount II of the balancing surface II is decomposed to obtain the moving distance of the mass body II in the first direction and the second direction; According to the moving distance of the mass body II in the first direction and the second direction, the target position of the mass body II is obtained, wherein the target position calculation formula of the mass body II is: ; ; ; ; in, represents the zero vector, Represents mass The unbalance after moving in the first direction, Represents mass The initial unbalanced beam, represents the component of the unbalance II in the first direction, Represents mass The distance traveled in the pipe, Represents mass ; Represents mass The unbalance after moving in the second direction, Represents the mass body The initial imbalance, represents the component of the unbalance II in the second direction, Represents mass The distance traveled in the pipe, Represents mass Furthermore, the unbalance , represents the mass body, and r represents the radius of the location of the mass body m. Represents the amount of incremental unbalance created by moving mass in the pipe. This means that the incremental unbalance should be offset by the measured unbalance U.

[0041] The first direction and the second direction of the balancing plane II are the same as those of the balancing plane I.

[0042] It should be noted that, in steps S300 and S400, after the balancing plane I and the balancing plane II are adjusted, when CT dynamic balancing is required again, the mass body I and the mass body II can be adjusted.

[0043] In summary, a CT dynamic balance automatic correction method has the following advantages: Improved accuracy: By adjusting the position of the mass in two directions, the imbalance can be compensated more accurately, thereby improving the balancing accuracy of the rotating machinery.

[0044] Reduce vibration: effectively reduce the vibration caused by imbalance and improve the operation stability and service life of the machine.

[0045] Automatic adjustment: Use computer to control the movement of mass body to realize automatic dynamic balance correction, reduce manual intervention and improve efficiency.

[0046] Strong adaptability: It is suitable for various types of rotating machinery, including high-precision equipment such as CT scanners, and has a wide range of applicability.

[0047] Reduce downtime: Automated dynamic balancing can reduce machine downtime and improve production efficiency.

[0048] In a second aspect, the present application provides a CT dynamic balance automatic correction system, which is applied to the aforementioned CT dynamic balance automatic correction method, and the system includes: The CT scanner body has a balance plane I and a balance plane II; A plurality of pipes I are arranged on the balancing surface I, a mass body I and a positioning mechanism I are arranged in the pipe I, and the positioning mechanism I can adjust the position of the mass body I in the pipe I; A plurality of pipes II are arranged on the balancing surface II, a mass body II and a positioning mechanism II are arranged in the pipe II, and the positioning mechanism II can adjust the position of the mass body II in the pipe II; A control system is connected to the positioning mechanism I and the positioning mechanism II, wherein the control system is configured as follows: Obtaining decomposition results of the size and position of the counterweight to be added / reduced on the balance plane I and the balance plane II of the CT scanner body; According to the decomposition results of the size and position of the counterweight to be added / reduced on the balancing plane I and the balancing plane II, the unbalance amount I of the balancing plane I and the unbalance amount II of the balancing plane II are obtained; According to the unbalance amount I of the balancing surface I, adjusting the initial position of the mass body I on the balancing surface I to obtain the target position of the mass body I; According to the unbalance amount II of the balancing surface II, the initial position of the mass body II on the balancing surface II is adjusted to obtain the target position of the mass body II.

[0049] Specifically, the balance plane I and the balance plane II of the CT scanner body can be the opposite end faces of the CT scanner body. In addition, a plurality of pipelines I are arranged on the balance plane I, and the number of pipelines I can be adjusted as needed. For example, the number of pipelines I can be 1, 2, 3, 4, 5, 6, etc. Preferably, the number of pipelines I is four, specifically including the first pipeline I, the second pipeline I, the third pipeline I and the fourth pipeline I. When the balance plane I is placed vertically, the arrangement of pipelines 1 can be, the first pipeline I at the three o'clock direction, the second pipeline I at the six o'clock direction, the third pipeline I at the nine o'clock direction, and the fourth pipeline I at the twelve o'clock direction. The arrangement of pipelines II of the balance plane II can be the same as or different from that of pipelines I of the balance plane I, and can be specifically arranged as needed. Preferably, the pipeline arrangement of the balance plane II is the same as that of the balance plane I.

[0050] The positioning mechanism I of the pipeline I and the positioning mechanism II of the pipeline II may be the same or different. For example, the positioning mechanism I and the positioning mechanism II may be a positioning mechanism composed of a motor and a lead screw, or may be composed of a pump valve.

[0051] If the positioning mechanism is composed of a motor and a lead screw, the motor is arranged at one end of the pipeline I and the pipeline II, the motor rotating shaft is connected to the lead screw, and can drive the lead screw to rotate. A mass body is arranged on the lead screw, and the mass body is confined in the pipeline and cannot rotate relative to the pipeline. In this case, when the lead screw rotates, the mass body connected to the lead screw will move in the pipeline along the length direction of the lead screw, thereby adjusting the position of the mass body in the pipeline. The mass body can refer to mass body I and / or mass body II, and the mass body is a solid, such as a counterweight.

[0052] If the positioning mechanism is composed of pump valves, the pump valves are respectively arranged at both ends of the pipeline (the pipeline refers to pipeline I and / or pipeline II), the pump valve is connected to the pump, and the pump can pump gas into the pipeline through the pump valve. The mass body in the pipeline between the two pump valves is a fluid. In this way, when the gas of the pump valve at one end of the pipeline decreases and the gas of the pump valve at the other end increases, the mass body will move to the side where the gas decreases, thereby adjusting the position of the mass body in the pipeline, and vice versa. When the mass body reaches the target position, the pump valve is closed. In this case, the mass body will keep the same position if the gas between the mass body and the pump valve remains unchanged.

[0053] The control system can be a computer, and the control system executes corresponding steps according to the configuration content.

[0054] In one embodiment, the control system is further configured to: Acquiring an initial vibration value of the CT scanner body; Obtaining a vibration value I after adding a test weight I to the balancing surface I; Obtaining the vibration value II after adding the test weight II to the balancing surface II; Determining an influence coefficient according to the initial vibration value, the vibration value I and the vibration value II; According to the influence coefficient, the decomposition results of the size and position of the counterweight to be added / reduced on the balance plane I and the balance plane II are obtained.

[0055] For details, please refer to the CT dynamic balance automatic correction method, which will not be described here.

[0056] In one embodiment, the control system decomposes the unbalance amount I of the balancing surface I into the mass body I and the target position corresponding to the pipeline I, and issues an instruction I to the positioning mechanism I according to the mass body I and the target position of the mass body I; The control system also decomposes the unbalance amount II of the balancing surface II into the mass body II and the target position of the mass body II corresponding to the pipeline II, and issues an instruction II to the positioning mechanism II based on the mass body II and the target position.

[0057] In one embodiment, the positioning mechanism I adjusts the mass body I to the target position of the mass body I in response to the instruction I.

[0058] For details, please refer to the CT dynamic balance automatic correction method, which will not be described here.

[0059] In one embodiment, the positioning mechanism II adjusts the mass body II to a target position of the mass body II in response to an instruction II.

[0060] For details, please refer to the CT dynamic balance automatic correction method, which will not be described here. Example

[0061] A CT dynamic balance automatic correction system, such as Figure 2 As shown, by arranging the pipeline on the balance plane of the device, the movement of the mass body (fluid / solid) along the pipeline is used to achieve compensation of imbalance in any direction and size, thereby ensuring the balance and stability of the rotating system.

[0062] The CT scanner is basically balanced in the initial state. In order to eliminate the residual unbalance, dynamic balancing is performed according to the principle of the dual-plane influence coefficient method. The CT scanner is started and operated at the working speed. The internal sensor of the CT scanner collects the vibration value. Then two test weights are added and measured. Finally, the weights to be added on the two planes are obtained through computer signal processing and calculation. and its location , the unbalance amount can be calculated: ; ; After that, decompose it to the direction of the pipeline and get (superscript indicates the position of the pipeline, v-vertical direction, h-horizontal direction, subscript represents the balance plane), such as Figure 3 As shown, Figure 3 is the decomposition on plane I, and the same is true for plane II. Assume that the masses of the mass bodies in the four sections of the pipeline are , then in order to compensate for the imbalance on plane I, it is necessary to move the mass body in pipe ② upward and the mass body in pipe ③ to the right. The calculation formula is: ; ; ; ; Can get ,like Figure 4 As shown (or move up and move right , the calculation formula for the corresponding moving distance is the same as above, just replace the mass).

[0063] After the calculation is completed, the computer transmits the command to the motor. If the mass body is solid, it is moved by the screw guide. If the mass body is fluid, it is moved by the pump and the air valve. Figure 5 shown.

[0064] In summary, a method and system for automatic correction of CT dynamic balance is intended to improve the stability and accuracy of CT scanners and ensure the quality of imaging and the accuracy of diagnosis. The method compensates for the imbalance by automatically adjusting the position of the mass body on the balance plane I and the balance plane II to achieve the balance and stability of the CT scanner rotation system. The advantage lies in the re-balancing adjustment: when the CT dynamic balance is performed again, the control system can obtain the vibration value according to the rotation of the CT scanner, and adjust the mass body according to the vibration value to achieve CT dynamic balance without manual repeated adjustment of the counterweight. The system reduces tedious manual operations and improves the speed and efficiency of dynamic balance correction. Automated adjustment reduces the requirements for operators and locations, and reduces the dependence on carrying large mass counterweights.

[0065] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0066] The various embodiments in the present disclosure are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0067] The protection scope of the present disclosure is not limited to the above-mentioned embodiments. Obviously, those skilled in the art can make various changes and modifications to the present disclosure without departing from the scope and spirit of the present disclosure. If these changes and modifications fall within the scope of the claims of the present disclosure and their equivalents, the intention of the present disclosure also includes these changes and modifications.

Claims

1. A method for automatic correction of CT dynamic balance, characterized in that the method include: Obtaining decomposition results of the size and position of the weights to be added / reduced on the balance plane I and the balance plane II of the CT scanner body; According to the decomposition results of the size and position of the counterweight to be added / reduced on the balancing plane I and the balancing plane II, the unbalance amount I of the balancing plane I and the unbalance amount II of the balancing plane II are obtained; According to the unbalance amount I of the balancing surface I, adjusting the initial position of the mass body I on the balancing surface I to obtain the target position of the mass body I; According to the unbalance amount II of the balancing surface II, the initial position of the mass body II on the balancing surface II is adjusted to obtain the target position of the mass body II.

2. The CT dynamic balance automatic correction method according to claim 1, characterized in that: The step of obtaining the decomposition result of the size and position of the weight to be added / subtracted on the balance plane I and the balance plane II of the CT scanner body comprises: Acquiring an initial vibration value of the CT scanner body; Obtaining a vibration value I after adding a test weight I to the balancing surface I; Obtaining the vibration value II after adding the test weight II to the balancing surface II; Determining an influence coefficient according to the initial vibration value, the vibration value I and the vibration value II; According to the influence coefficient, the decomposition results of the size and position of the counterweight to be added / reduced on the balance plane I and the balance plane II are obtained.

3. The CT dynamic balance automatic correction method according to claim 1, characterized in that: The step of obtaining the unbalance amount I of the balancing plane I and the unbalance amount II of the balancing plane II according to the decomposition results of the size and position of the counterweight to be added / reduced on the balancing plane I and the balancing plane II comprises: The calculation formula of the unbalance amount I of the balancing surface I is: ； in, Indicates the unbalance I, Indicates that weight should be added / subtracted. Indicates the target location; The calculation formula of the unbalance amount II of the balancing surface II is: ； in, Indicates the unbalance II, Indicates that weight should be added / subtracted. Indicates the target location.

4. The CT dynamic balance automatic correction method according to claim 3, characterized in that: The step of adjusting the initial position of the mass body I on the balancing surface I according to the unbalance amount I of the balancing surface I to obtain the target position of the mass body I comprises: Decomposing the unbalance amount I of the balancing surface I to obtain the moving distance of the mass body I in the first direction and the second direction; According to the moving distance of the mass body 1 in the first direction and the second direction, the target position of the mass body 1 is obtained, wherein the target position calculation formula of the mass body 1 is: ； ； ； ； in, represents the zero vector, Represents mass The unbalance after moving in the first direction, represents the initial imbalance of the mass body, represents the component of the unbalance I in the first direction, Represents mass The distance traveled in the pipe, Represents mass ; Represents mass The unbalance after moving in the second direction, Represents mass The initial imbalance, represents the component of the unbalance I in the second direction, Represents mass The distance traveled in the pipe, Represents mass .

5. The CT dynamic balance automatic correction method according to claim 3, characterized in that: The step of adjusting the initial position of the mass body II on the balancing surface II according to the unbalance amount II of the balancing surface II to obtain the target position of the mass body II comprises: Decomposing the unbalance amount II of the balancing surface II to obtain the moving distance of the mass body II in the first direction and the second direction; According to the moving distance of the mass body II in the first direction and the second direction, the target position of the mass body II is obtained, wherein the target position calculation formula of the mass body II is: ； ； ； ； in, represents the zero vector, Represents mass The unbalance after moving in the first direction, Represents mass The initial unbalanced beam, represents the component of the unbalance II in the first direction, Represents mass The distance traveled in the pipe, Represents mass ; Represents mass The unbalance after moving in the second direction, Represents the mass body The initial imbalance, represents the component of the unbalance II in the second direction, Represents mass The distance traveled in the pipe, Represents mass .

6. A CT dynamic balance automatic correction system, characterized in that: The CT dynamic balance automatic correction method applied to any one of claims 1 to 5, the system comprising: A CT scanner body having a balance plane I and a balance plane II; A plurality of pipes I are arranged on the balancing surface I, a mass body I and a positioning mechanism I are arranged in the pipe I, and the positioning mechanism I can adjust the position of the mass body I in the pipe I; A plurality of pipes II are arranged on the balancing surface II, a mass body II and a positioning mechanism II are arranged in the pipe II, and the positioning mechanism II can adjust the position of the mass body II in the pipe II; A control system is connected to the positioning mechanism I and the positioning mechanism II, wherein the control system is configured as follows: Obtaining decomposition results of the size and position of the counterweight to be added / reduced on the balance plane I and the balance plane II of the CT scanner body; According to the decomposition results of the size and position of the counterweight to be added / reduced on the balancing plane I and the balancing plane II, the unbalance amount I of the balancing plane I and the unbalance amount II of the balancing plane II are obtained; According to the unbalance amount I of the balancing surface I, adjusting the initial position of the mass body I on the balancing surface I to obtain the target position of the mass body I; According to the unbalance amount II of the balancing surface II, the initial position of the mass body II on the balancing surface II is adjusted to obtain the target position of the mass body II.

7. The CT dynamic balance automatic correction system according to claim 6, characterized in that: The control system is also configured to: Acquiring an initial vibration value of the CT scanner body; Obtaining a vibration value I after adding a test weight I to the balancing surface I; Obtaining the vibration value II after adding the test weight II to the balancing surface II; Determining an influence coefficient according to the initial vibration value, the vibration value I and the vibration value II; According to the influence coefficient, the decomposition results of the size and position of the counterweight to be added / reduced on the balance plane I and the balance plane II are obtained.

8. The CT dynamic balance automatic correction system according to claim 6, characterized in that: The control system decomposes the unbalance amount I of the balancing surface I into the mass body I and the target position corresponding to the pipeline I, and issues an instruction I to the positioning mechanism I according to the mass body I and the target position of the mass body I; The control system also decomposes the unbalance amount II of the balancing surface II into the mass body II and the target position of the mass body II corresponding to the pipeline II, and issues an instruction II to the positioning mechanism II based on the mass body II and the target position.

9. The CT dynamic balance automatic correction system according to claim 8, characterized in that: The positioning mechanism I adjusts the mass body I to the target position of the mass body I in response to the instruction I.

10. The CT dynamic balance automatic correction system according to claim 6, characterized in that: The positioning mechanism II adjusts the mass body II to a target position of the mass body II in response to the instruction II.

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