Flying-spot scanning device, imaging device, adjustment method, correction method, system, and readable storage medium

Abstract

A flying-spot scanning device, an imaging device, an adjustment method, a system, and a readable storage medium, relating to the field of security detection, and for use in improving the imaging quality of a flying-spot scanning device. The flying-spot scanning device comprises a base (1), a driving mechanism (2), a transmission mechanism (3), a flywheel (4), a detection mechanism (5), and a control assembly. The base (1) is configured to provide support. The driving mechanism (2) is mounted on the base (1) and supported by the base (1). The transmission mechanism (3) is mounted on the base (1) and supported by the base (1). The transmission mechanism (3) is drivingly connected to the driving mechanism (2) so as to rotate under the drive of the driving mechanism (2). The flywheel (4) is drivingly connected to the transmission mechanism (3). The detection mechanism (5) comprises a vibration detection assembly (51). The vibration detection assembly (51) is mounted on the transmission mechanism (3). The control assembly is electrically connected to the detection mechanism (5). The control assembly is configured to calculate, on the basis of the amplitude of vibration detected by the vibration detection assembly (51), whether the vibration of the flywheel (4) during movement meets requirements. Scanning and imaging can be performed only when the flywheel vibration meets the requirements, thereby ensuring imaging quality.

Description

Flying-spot scanning device, imaging device, adjustment method, calibration method, system, and readable storage medium

[0001] Cross-references to related applications

[0002] This disclosure is based on and claims priority to CN application No. 202411958862.5, filed on December 27, 2024, and CN application No. 202411958219.2, filed on December 27, 2024, the contents of which are incorporated herein by reference in their entirety. Technical Field

[0003] This disclosure relates to the field of security testing, specifically to a flying-spot scanning device, an imaging device, an adjustment method, a calibration method, a system, and a readable storage medium. Background Technology

[0004] Detecting and seizing contraband (such as drugs and explosives) from goods / vehicles is a crucial task in the security field. Currently, the most effective and widely used security inspection technology for goods / vehicles is X-ray imaging. Technically, X-ray imaging technology can be categorized into three types: transmission-based, backscattered, and a combination of transmission and backscattered methods.

[0005] High-energy X-rays have strong penetrating power, and their imaging technology is very effective at inspecting heavy goods. However, high-energy X-rays are not very effective at detecting contraband such as drugs and explosives that have low atomic numbers and low material density.

[0006] X-ray backscattering imaging technology detects substances based on the detection of Compton backscattered signals. Compared to metallic substances, contraband with low atomic numbers and low densities (such as drugs and explosives) has a higher Compton scattering cross section, producing a stronger scattered signal. Therefore, X-ray backscattering technology is particularly suitable for detecting contraband such as drugs and explosives, and has become a widely used contraband detection technology in the security inspection field.

[0007] X-ray backscattering (XPS) imaging uses point X-rays to strike an object and a large-area detector to collect the scattered signals. Analyzing the imaging principle of X-ray backscattering, obtaining stable and reliable point X-rays is one of the key technologies in backscattering imaging. Methods for obtaining point X-rays include: flywheel devices, chopper structures, and rotary drum structures. Among these, the flywheel device is the most commonly used mechanical structure in backscattering technology due to its simple structure, small size, and light weight.

[0008] The inventors discovered that the existing technology has at least the following problems: the stability and reliability of the flywheel operation directly affect the image quality and reliability of the backscatter imaging system. Due to the high speed and large inertia of the flywheel, vibration and impact are inevitably caused during operation, and the imaging quality of the flying spot scanning device needs to be improved. Summary of the Invention

[0009] This disclosure provides a flying-spot scanning device, a flying-spot imaging device, a dynamic balance adjustment method for the flying-spot scanning device, a correction method, a system, and a readable storage medium to improve the imaging quality of the flying-spot scanning device.

[0010] Some embodiments of this disclosure also provide a flying-spot scanning device, including:

[0011] The base is constructed to provide support;

[0012] A drive mechanism is mounted on and supported by the base;

[0013] A transmission mechanism is mounted on and supported by the base; the transmission mechanism is driven by the drive mechanism to rotate under the drive of the drive mechanism.

[0014] A flywheel is driven to connect to the transmission mechanism so as to rotate with the rotation of the transmission mechanism;

[0015] A detection mechanism includes a vibration detection component; the vibration detection component is mounted on the transmission mechanism to detect the amplitude of the transmission mechanism; and

[0016] A control component, electrically connected to the detection mechanism, is configured to calculate whether the vibration during the flywheel's motion meets the requirements based on the amplitude detected by the vibration detection component.

[0017] In some embodiments, the testing facility further includes:

[0018] A temperature detection component is installed on the transmission mechanism and / or the drive mechanism to detect the temperature of the transmission mechanism and / or the drive mechanism.

[0019] In some embodiments, the drive mechanism includes:

[0020] The motor mount is arranged at a distance from the transmission mechanism; and

[0021] An electric motor is mounted on the motor mount; the electric motor is driven by the transmission mechanism to drive the transmission mechanism to rotate.

[0022] In some embodiments, the transmission mechanism includes:

[0023] A bearing housing is installed on the base; the bearing housing is located between the flywheel and the motor housing.

[0024] Bearing, mounted in the bearing housing; and

[0025] The drive shaft is supported by the bearing; one end of the drive shaft is connected to the motor drive, and the other end of the drive shaft is connected to the flywheel drive.

[0026] In some embodiments, the number of temperature sensing components is multiple, at least one of the temperature sensing components is mounted on the housing of the motor mount, and at least one of the temperature sensing components is mounted on the bearing mount.

[0027] In some embodiments, the testing facility further includes:

[0028] A distance detection element is installed near the flywheel and configured to detect the radial offset of the flywheel in a stationary state; the control component is electrically connected to the distance detection element and is further configured to calculate whether the position of the flywheel in a stationary state meets the requirements based on the radial offset detected by the distance detection element.

[0029] Some embodiments of this disclosure also provide a flying-spot imaging device, including the flying-spot scanning device provided by any of the technical solutions of this disclosure.

[0030] This disclosure further provides a method for dynamic balance adjustment of a flying-spot scanning device, including the following steps:

[0031] With a set rotation speed, start the flying point scanning device provided by any of the technical solutions disclosed herein, and measure the first amplitude of the flywheel of the flying point scanning device;

[0032] Determine whether the first amplitude is greater than or equal to a preset second amplitude;

[0033] If the first amplitude is greater than or equal to the preset second amplitude, the flywheel is dynamically balanced until the measured third amplitude of the adjusted flywheel is less than the preset second amplitude.

[0034] In some embodiments, the dynamic balancing adjustment method for the flying point scanning device employs the following steps to dynamically balance the flywheel:

[0035] Add a counterweight at a predetermined position on the edge of the flywheel;

[0036] At the set rotational speed, the flywheel with the counterweight is started, and the fourth amplitude of the flywheel is measured;

[0037] Based on the first amplitude, the fourth amplitude, and the weight of the counterweight, calculate the amount of compensation required to change the weight of the flywheel;

[0038] Stop the flywheel carrying the counterweight;

[0039] The weight of the counterweight is reduced by the compensation amount in the same direction as the vector direction at the set position, or the weight of the counterweight is increased by the compensation amount in the opposite direction of the vector direction corresponding to the set position.

[0040] In some embodiments, the dynamic balance adjustment method for a flying-spot scanning device further includes the following steps:

[0041] The fifth amplitude of the flywheel after weight adjustment was measured again;

[0042] Determine whether the fifth amplitude is greater than or equal to the preset second amplitude;

[0043] If the fifth amplitude is greater than or equal to the preset second amplitude, the above dynamic balance adjustment steps are repeated until the measured fifth amplitude of the flywheel is less than the preset second amplitude. The fifth amplitude at this time is then used as the third amplitude of the adjusted flywheel.

[0044] In some embodiments, the dynamic balance adjustment method for the flying point scanning device uses the following formula to calculate the compensation amount: G2=A*G1 / (BA);

[0045] Wherein, G2 is the compensation amount, G1 is the weight of the counterweight, A is the first amplitude, and B is the second amplitude.

[0046] Some embodiments of this disclosure also provide a dynamic balance adjustment system for a flying-spot scanning device, including:

[0047] Memory; and

[0048] A processor coupled to the memory is configured to execute a dynamic balancing method for a flying-spot scanning device, as provided in any of the technical solutions of this disclosure, based on instructions stored in the memory.

[0049] This disclosure also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the dynamic balance adjustment method for a flying-spot scanning device as provided in any of the technical solutions of this disclosure.

[0050] The flying-spot scanning device provided by the above technical solution uses a vibration detection component in the detection mechanism to acquire the amplitude of the flywheel, thereby determining whether the flywheel amplitude meets the requirements. If the flywheel vibration is too large, the image obtained by the subsequent flying-spot scanning device will differ significantly from the actual object being inspected. In this case, it is not advisable to directly use the flying-spot scanning device to acquire the image of the object being inspected. Instead, the flywheel needs to be dynamically balanced until the amplitude meets the requirements before the flying-spot scanning device can acquire the image of the object being inspected. The image obtained in this way has higher accuracy. The flying-spot scanning device provided by the above technical solution ensures high image quality by monitoring the state of the transmission mechanism and the flywheel and by performing real-time correction based on the acquired state data.

[0051] This disclosure proposes an image correction method for a flying-spot imaging device to improve the imaging quality of the flying-spot scanning device.

[0052] This disclosure provides an image correction method for a flying-spot imaging device, including the following steps:

[0053] The correction parameters are calculated based on the first amplitude of the flywheel of the flying point imaging device;

[0054] Determine whether the correction parameter is greater than the first preset parameter;

[0055] If the correction parameter is greater than the first preset parameter, the image scanned by the flying spot imaging device is corrected.

[0056] In some embodiments, the image correction method for the flying spot imaging device further includes the following steps:

[0057] If the correction parameter is less than or equal to the first preset parameter, the image scanned by the flying point imaging device will not be corrected.

[0058] In some embodiments, the image correction method for the flying spot imaging device further includes the following steps:

[0059] Provided that the correction parameter is greater than the first preset parameter, before correcting the image scanned by the flying point imaging device, it is determined whether the correction parameter is greater than the second preset parameter; wherein, the second preset parameter is greater than the first preset parameter;

[0060] If the correction parameter is greater than the second preset parameter, the flying point imaging device will be shut down.

[0061] In some embodiments, prior to the step of calculating correction parameters based on the first amplitude of the flyspot imaging device's flywheel, the flyspot imaging device image correction method further includes the following steps:

[0062] Whether dynamic balancing adjustment is needed is determined based on the first amplitude of the flywheel of the flying point imaging device.

[0063] If the first amplitude is greater than or equal to the preset second amplitude, the flywheel is dynamically balanced until the measured third amplitude of the adjusted flywheel is less than the preset second amplitude. The third amplitude of the flywheel at this time is then taken as the first amplitude of the flywheel.

[0064] In some embodiments, the flywheel is dynamically balanced using the following steps:

[0065] The flying point imaging device is activated at a set rotation speed to measure the first amplitude of the flywheel;

[0066] Add a counterweight at a predetermined position on the edge of the flywheel;

[0067] At the set rotational speed, the flywheel with the counterweight is started, and the fourth amplitude of the flywheel is measured;

[0068] Based on the first amplitude, the fourth amplitude, and the weight of the counterweight, calculate the amount of compensation required to change the weight of the flywheel;

[0069] Stop the flywheel carrying the counterweight;

[0070] The weight of the counterweight is reduced by the compensation amount in the same direction as the vector direction at the set position, or the weight of the counterweight is increased by the compensation amount in the opposite direction of the vector direction corresponding to the set position.

[0071] In some embodiments, the compensation amount is calculated using the following formula: G2=A*G1 / (BA);

[0072] Wherein, G2 is the compensation amount, G1 is the weight of the counterweight, A is the first amplitude, and B is the fourth amplitude.

[0073] In some embodiments, the dynamic balancing of the flywheel further includes the following steps:

[0074] The fifth amplitude of the flywheel after weight adjustment was measured again;

[0075] Determine whether the fifth amplitude is greater than or equal to the preset second amplitude;

[0076] If the fifth amplitude is greater than or equal to the preset second amplitude, the above dynamic balance adjustment steps are repeated until the measured fifth amplitude of the flywheel is less than the preset second amplitude. The fifth amplitude at this time is then used as the third amplitude of the adjusted flywheel.

[0077] The image correction method for a flying spot imaging device provided by the above technical solution calculates correction parameters based on the first amplitude of the flywheel of the flying spot imaging device; the correction parameters are used to determine whether correction should be performed. Specifically, the relationship between the correction parameters and a first preset parameter determines whether image correction is necessary: ​​if the correction parameters are greater than the first preset parameter, it indicates that the vibration during the operation of the flying spot imaging device has affected the image quality, and the image scanned by the flying spot imaging device is then corrected. The image correction method for a flying spot imaging device provided by the above technical solution can correct the images acquired by the flying spot imaging device, thereby improving image quality. Attached Figure Description

[0078] The accompanying drawings, which are included to provide a further understanding of this disclosure and form part of this application, illustrate exemplary embodiments of this disclosure and are used to explain this disclosure, but do not constitute an undue limitation of this disclosure. In the drawings:

[0079] Figure 1 is a schematic diagram of the structure of a flying point scanning device provided in some embodiments of this disclosure.

[0080] Figure 2 is a schematic diagram of a dynamic balance adjustment method for a flying point scanning device provided in some embodiments of this disclosure.

[0081] Figure 3 is a schematic diagram of the dynamic balance adjustment method of the flying point scanning device provided in some embodiments of this disclosure.

[0082] Figure 4 is a schematic diagram of the vector direction of the dynamic balance adjustment method of the flying point scanning device provided in some embodiments of this disclosure.

[0083] Figure 5 is a schematic diagram of flywheel vibration in the dynamic balance adjustment method of the flying point scanning device provided in some embodiments of this disclosure.

[0084] Figure 6 is a schematic diagram of an image correction method for a flying-spot imaging device provided in some embodiments of this disclosure.

[0085] Figure 7 is a schematic diagram of a method for determining whether a flywheel needs dynamic balancing adjustment using a flying spot imaging device provided in some embodiments of this disclosure.

[0086] Figure 8 is a schematic diagram of a method for dynamic balancing of a flywheel using a flying spot imaging device provided in some embodiments of this disclosure.

[0087] Figure 9 is a schematic diagram of the correction effect of the image correction method of the flying spot imaging device provided in some embodiments of this disclosure.

[0088] Reference numerals: 1. Base; 2. Drive mechanism; 3. Transmission mechanism; 4. Flywheel; 5. Detection mechanism; 21. Motor mount; 22. Motor; 31. Bearing mount; 32. Bearing; 33. Drive shaft; 34. Coupling; 51. Vibration detection component; 52. Distance detection element; 53. Temperature detection component. Detailed Implementation

[0089] The technical solutions provided in this disclosure will be described in more detail below with reference to Figures 1 to 9. The descriptions of exemplary embodiments are merely illustrative and are in no way intended to limit this disclosure or its application or use. This disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make this disclosure thorough and complete, and to fully express the scope of this disclosure to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as merely exemplary and not as limiting.

[0090] The terms “first,” “second,” and similar words used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as “including” or “contains” mean that the element preceding the word covers the element listed after the word, and do not exclude the possibility of covering other elements as well.

[0091] In this disclosure, when a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other devices without an intermediary device, or it may be not directly connected to the other devices but have an intermediary device.

[0092] All terms used in this disclosure, including technical or scientific terms, have the same meaning as understood by one of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as a dictionary, should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and not as having an idealized or highly formalized meaning, unless expressly defined herein.

[0093] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment shall be considered part of the specification.

[0094] The dimensions of the various parts shown in the accompanying drawings are not drawn to actual scale. Common structural elements or elements of the same kind are given the same reference numerals in the various drawings, and repeated descriptions of them are omitted where appropriate.

[0095] The inventors discovered through research that due to the motion characteristics of the flying-spot scanning device, vibration is inevitable during operation. When the vibration exceeds a certain level, it will seriously affect the imaging quality. Therefore, it is necessary to monitor the vibration of the flying-spot scanning device in real time to avoid the occurrence of poor imaging quality caused by vibration.

[0096] Figure 1 is a schematic diagram of the structure of a flying point scanning device provided in some embodiments of this disclosure. Figure 2 is a schematic diagram of a dynamic balance adjustment method for a flying point scanning device provided in some embodiments of this disclosure. Figure 3 is a schematic diagram of dynamic balance adjustment performed by the dynamic balance adjustment method for a flying point scanning device provided in some embodiments of this disclosure. Figure 4 is a schematic diagram of the vector direction of the dynamic balance adjustment method for a flying point scanning device provided in some embodiments of this disclosure. Figure 5 is a schematic diagram of flywheel vibration in the dynamic balance adjustment method for a flying point scanning device provided in some embodiments of this disclosure.

[0097] Referring to Figures 1 to 5, some embodiments of this disclosure provide a flying-spot scanning device for X-ray backscattering technology. The flying-spot scanning device includes a base 1, a drive mechanism 2, a transmission mechanism 3, a flywheel 4, a detection mechanism 5, and a control component (not shown). The base 1 is configured to provide support. The drive mechanism 2 is mounted on the base 1 and supported by the base 1. The transmission mechanism 3 is mounted on the base 1 and supported by the base 1; the transmission mechanism 3 is drivenly connected to the drive mechanism 2 to rotate under the drive of the drive mechanism 2. The flywheel 4 is drivenly connected to the transmission mechanism 3 to rotate with the rotation of the transmission mechanism 3. The detection mechanism 5 includes a vibration detection component 51; the vibration detection component 51 is mounted on the transmission mechanism 3 to detect the amplitude of the transmission mechanism 3. The control component is electrically connected to the detection mechanism 5 and is configured to determine whether the vibration of the flywheel 4 during its movement meets requirements based on the amplitude detected by the vibration detection component 51. If the first amplitude of the flywheel 4 during rotation is greater than or equal to the preset second amplitude, the vibration of the flywheel 4 during movement does not meet the requirements; if the first amplitude is less than the preset second amplitude, the vibration of the flywheel 4 during movement meets the requirements. The second amplitude is a value preset in advance based on the actual application scenario of the flying point scanning device.

[0098] The operation of the flying-spot scanning device is as follows: When the drive mechanism 2 of the flying-spot scanning device is activated, it operates according to a preset mode. The rotation of the drive mechanism 2 is transmitted to the flywheel 4 through the transmission mechanism 3, realizing the transfer of kinetic energy. Driven by the drive mechanism 2, the flywheel 4 rotates at high speed, enabling the X-ray beam to sweep across the target at a high frequency. Through rapid scanning and imaging, the flying-spot scanning device can identify the internal structure, surface defects, and internal components of the object being inspected.

[0099] The base 1 is crucial for the structural stability and functionality of the entire flying-spot scanning device. It not only affects the performance of the flying-spot scanning device but also directly impacts the user experience and operational efficiency. The base 1 can be made of a single material or a combination of materials to meet different performance requirements. Common materials for the base 1 include aluminum alloy, steel, plastics or composite materials, and shock-absorbing materials. Aluminum alloy is lightweight, high-strength, and corrosion-resistant. Furthermore, its good thermal conductivity helps dissipate heat from the flying-spot scanning device. In applications requiring higher rigidity, steel can be used for the base 1. The robustness and stability of steel effectively reduce vibrations during operation, thereby improving image quality. In portable or lightweight applications, high-performance plastics or composite materials can be used for the base 1, facilitating handling and installation. High-performance plastics or composite materials provide sufficient rigidity while reducing the overall weight of the device. Shock-absorbing materials effectively reduce or absorb external impacts, ensuring imaging stability.

[0100] In some embodiments, as shown in Figure 1, the base 1 has a large bottom dimension and a small top dimension. The base 1 has good structural stability, and even if there is a certain degree of vibration during the operation of the flying point scanning device, it can maintain the stability of the flying point scanning device, ensuring the stability of the flying point scanning device during use and reducing or even avoiding the degradation of image quality due to shaking. The drive mechanism 2 and the transmission mechanism 3 are both mounted on the top of the base 1 and are both supported by the base 1.

[0101] The drive mechanism 2 provides power for the rotation of the flywheel 4. As shown in Figure 1, the drive mechanism 2 is mounted on the top right edge of the base 1. The load on the base 1 from the drive mechanism 2 and the transmission mechanism 3 is substantially uniform. In some embodiments, the drive mechanism 2 includes a motor mount 21 and a motor 22. The motor mount 21 is spaced apart from the transmission mechanism 3. The motor 22 is mounted on the motor mount 21; the motor 22 is drivenly connected to the transmission mechanism 3 to drive the transmission mechanism 3 to rotate. The motor 22 provides power for the rotation of the flywheel 4.

[0102] The drive mechanism 2 provides sufficient torque and speed to the flywheel 4 of the flying point scanning device to ensure that the flywheel 4 can start quickly and rotate stably.

[0103] The transmission mechanism 3 is located between the drive mechanism 2 and the flywheel 4, and transmits the power generated by the drive mechanism 2 to the flywheel 4. The transmission mechanism 3 can use a drive shaft, gears, belts, chains, or other structures to achieve power transmission.

[0104] Referring to Figure 1, in some embodiments, the transmission mechanism 3 includes a bearing housing 31, a bearing 32, and a transmission shaft 33. The bearing housing 31 is mounted on the base 1; the bearing housing 31 is located between the flywheel 4 and the motor base 21. The bearing 32 is mounted on the bearing housing 31. The transmission shaft 33 is supported by the bearing 32; one end of the transmission shaft 33 is driven and connected to the motor 22, and the other end of the transmission shaft 33 is connected to the flywheel 4. The transmission mechanism 3 may also include a gearbox, clutch, etc., for achieving smooth power transmission and speed regulation. Gear transmission has high efficiency and is suitable for high torque applications. Furthermore, gear transmission can withstand the dynamic load of the flywheel 4 during operation, enhancing the reliability of the transmission system and preventing deformation during movement from affecting the imaging results. The rotation of the motor 22 drives the transmission shaft 33 to rotate synchronously, and the transmission shaft 33 drives the flywheel 4 to rotate. A coupling 34 is provided between the output shaft of the motor 22 and the transmission shaft 33 to connect the two shafts.

[0105] In order to enable the transmission mechanism 3 to adapt to different working conditions and to operate stably when the temperature, humidity and dust in the environment change, the transmission mechanism 3 can be designed to be sealed, or a protective cover can be installed on the outside of the transmission shaft 33.

[0106] The flywheel 4 utilizes rotational motion to achieve rapid scanning of an X-ray beam (e.g., a pencil beam), thereby obtaining high-quality imaging results. The flywheel 4 comprises a wheel body and a shaft. The wheel body has a large diameter and appropriate thickness to increase the rotational inertia of the flywheel 4, thus storing more kinetic energy. The shape of the wheel body can be solid or hollow. The flywheel 4 is driven by a transmission mechanism 3 via the shaft, allowing it to rotate under the drive of the drive mechanism 2. The shaft supports the wheel body and allows it to rotate freely, while simultaneously transmitting the power provided by the transmission mechanism 3 to the wheel body.

[0107] During startup, flywheel 4 is gradually accelerated by the power provided by motor 22 and driven by transmission mechanism 3. Through rotation, flywheel 4 stores a certain amount of kinetic energy, the magnitude of which depends on its moment of inertia and rotational speed. Throughout the beam scanning process, the inertial force generated by the rotation of flywheel 4 can, to some extent, counteract external interference and resist speed changes. This characteristic is particularly important in rapid imaging or dynamic scanning, effectively improving the stability and consistency of the imaging. The high-speed rotation of flywheel 4 allows the X-ray beam to scan the object being inspected at extremely high frequencies, increasing the imaging speed. During scanning, flywheel 4 typically rotates at a constant speed, ensuring uniform and rapid coverage of the target area by the X-ray beam.

[0108] The flywheel 4 is made of one or more of the following materials: aluminum alloy, carbon fiber composite material, and steel. The stable rotation of the flywheel 4 ensures that the X-ray beam remains constant during scanning, unaffected by external influences. The inertial characteristics of the flywheel 4 effectively balance interference encountered by the flying-spot scanning device during operation, ensuring the stability of the scanning process and subsequent imaging quality. The flywheel 4 enables the flying-spot scanning device to better adapt to different applications and maintain stable operating performance in various operating modes.

[0109] In a flying spot scanning device, the smoothness of the rotation of the flywheel 4 is crucial for obtaining high-quality images. However, during high-speed operation, the flywheel 4 may vibrate due to imbalance, material defects, or external interference. Vibration not only affects image quality but may also damage the flying spot scanning device. Therefore, timely monitoring and evaluation of vibration conditions are essential for the scanning of the flying spot imaging device and the image quality based thereon. To this end, some embodiments of the flying spot scanning device provided in this disclosure have a detection mechanism 5, which includes a vibration detection component 51. The vibration detection component 51 is, for example, a vibration sensor. As shown in FIG1, the vibration detection component 51 is mounted on the transmission mechanism 3 and is used to detect the amplitude of the transmission mechanism 3. Specifically, the vibration detection component 51 is mounted on the transmission mechanism 3 to monitor the amplitude of the transmission mechanism 3 in real time. In the embodiments herein, since the flywheel 4 is directly connected to the transmission mechanism 3, specifically the transmission shaft 33 of the transmission mechanism 3, the amplitude of the transmission mechanism 3 is regarded as the amplitude of the flywheel 4. Therefore, the amplitude of the transmission mechanism 3 obtained by the vibration detection component 51 in real time is also equivalent to the amplitude of the flywheel 4 during rotation in real time.

[0110] The control component receives the amplitude detected by the vibration detection component 51, analyzes and processes the received amplitude, and then determines whether the amplitude of the flywheel 4 is within the specified range. During operation, the flywheel 4 is constantly rotating. If the amplitude of the flywheel 4 in any phase exceeds the preset second amplitude, it indicates that the flywheel 4 needs to be dynamically balanced. The specific method for dynamic balancing is described later.

[0111] The above technical solution includes a vibration detection component 51. This component detects the amplitude of the transmission mechanism 3 in real time to determine whether the first amplitude of the flywheel 4 during rotation is greater than or equal to a preset second amplitude. If the first amplitude is greater than or equal to the preset second amplitude, the vibration of the flywheel 4 during movement does not meet the requirements and dynamic balancing adjustment is necessary. If the first amplitude is less than the preset second amplitude, the vibration of the flywheel 4 during movement meets the requirements and dynamic balancing adjustment is not required. This provides a basis for judgment and adjustment to reduce vibration, significantly improving the imaging quality of the flying point scanning device. It also enables early detection of abnormalities, preventing equipment damage due to excessive vibration, reducing the frequency of unexpected equipment shutdowns, and improving the overall stability of the equipment. Furthermore, real-time detection and analysis of vibration conditions allows for timely handling of potential faults, ensuring long-term stable operation of the equipment and extending its service life.

[0112] Referring again to Figure 1, the detection mechanism 5 may further include a distance detection element 52. The distance detection element 52 can be one of the following: a laser rangefinder, an ultrasonic rangefinder, or an electro-optical rangefinder, etc. The distance detection element 52 is mounted near the flywheel 4 and is configured to detect the radial offset of the flywheel 4 in a stationary state. A control component is electrically connected to the distance detection element 52 and is also configured to calculate whether the position of the flywheel 4 in a stationary state meets the requirements based on the radial offset detected by the distance detection element 52. If the position of the flywheel 4 in a stationary state deviates too much from the preset position (e.g., the required installation position), the flywheel 4 may vibrate excessively during operation. The distance detection element 52 can identify whether the installation position of the flywheel 4 or its position after stopping after a period of operation meets the installation requirements.

[0113] The vibration detection component 51 and the distance detection element 52 can be used together: the vibration detection component 51 is used to measure the real-time amplitude of the flywheel 4 during rotation, and the distance detection element 52 is used to measure the radial offset of the flywheel 4 in a static state. Both the vibration detection component 51 and the distance detection element 52 are electrically connected to the control component. The control component determines the static and operational vibration conditions of the flywheel 4 based on the detection signals from the distance detection element 52 and the vibration detection component 51.

[0114] Referring again to Figure 1, in some embodiments, the detection mechanism 5 may further include a temperature detection component 53, which is mounted on the transmission mechanism 3 and / or the drive mechanism 2 for detecting the temperature of the transmission mechanism 3 and / or the drive mechanism 2.

[0115] Referring again to Figure 1, in some embodiments, there are multiple temperature detection components 53. At least one temperature detection component 53 is installed on the housing of the motor housing 21 and can directly detect the temperature of the housing of the motor housing 21. At least one temperature detection component 53 is installed on the bearing housing 31 and can directly detect the temperature of the bearing housing 31.

[0116] If any temperature detection component 53 detects a temperature value exceeding the required value, it indicates that the flying-spot scanning device is overheating. When the temperature is too high, the flying-spot scanning device can issue a first alarm signal or shut down. The first alarm signal can be an audible signal, a visual signal, etc.

[0117] Furthermore, some embodiments of this disclosure also provide a flying-spot imaging apparatus, which includes the flying-spot scanning device described above and a detector disposed between the flying-spot scanning device and the object to be detected, the detector being used to receive X-rays reflected by the object to be detected.

[0118] Referring to Figure 2, some embodiments of this disclosure also provide a method for dynamic balance adjustment of a flying-spot scanning device, including the following steps:

[0119] In step S100, the flying point scanning device is activated with the set rotation speed to measure the first amplitude A of the flywheel 4. The control component can obtain the first amplitude of the flywheel 4 based on the detection parameters of the vibration detection component 51. The vibration detection component 51 can directly detect the amplitude of the flywheel 4. The amplitude of the flywheel 4 before dynamic balancing is the first amplitude.

[0120] Step S200: Determine whether the first amplitude is greater than or equal to the preset second amplitude. The preset second amplitude is a pre-set parameter, and different values ​​are set according to the model of the flying point scanning device and the application scenario.

[0121] In step S300, if the first amplitude is greater than or equal to the preset second amplitude, the flywheel 4 is dynamically balanced until the measured third amplitude of the adjusted flywheel 4 is less than the preset second amplitude. If the first amplitude is greater than or equal to the preset second amplitude, it indicates that the vibration of the flywheel 4 is too large, and the image scanned by the flying point scanning device may have a large deviation from the actual image, so the flywheel 4 needs to be dynamically balanced.

[0122] If the first amplitude is less than the preset second amplitude, it means that the flywheel 4 vibrates little, and in this case, there is no need to perform dynamic balancing adjustment on the flywheel 4.

[0123] Referring to Figures 3 and 4, in some embodiments, the following steps are used to perform dynamic balancing adjustment on the flywheel 4. In this article, dynamic balancing adjustment refers to reducing or eliminating vibration by adjusting the mass distribution of the flywheel 4, so that the flywheel 4 remains stable during movement.

[0124] In step S301, a counterweight is added at a predetermined position on the edge of the flywheel 4. The weight of the counterweight is G1. The predetermined position can be any position on the edge of the flywheel 4, for example, the edge of the flywheel 4 itself. The counterweight is fixedly connected to the flywheel 4. After adding the counterweight, the counterweight and the flywheel 4 rotate synchronously. The weight distribution of the rotatable part of the flying point scanning device changes, and the rotational characteristics of the flywheel 4 of the flying point scanning device also change accordingly. After the rotational characteristics of the flywheel 4 change, the amplitude of the flywheel 4 may increase or decrease, which does not affect the adjustment in step S302.

[0125] In step S302, the flywheel 4 with counterweight is started at a set rotation speed, and the fourth amplitude B of the flywheel 4 is measured. The set rotation speed is a pre-set parameter, which is set according to the actual scenario of the flying point scanning device.

[0126] Step S303: Based on the first amplitude A, the fourth amplitude B, and the weight G1 of the counterweight, calculate the compensation amount G2 that needs to be changed in the weight of the flywheel 4. Specifically, calculate the compensation amount using the following formula: G2 = A * G1 / (BA).

[0127] Step S304: Stop the flywheel 4 with counterweight.

[0128] Step S305: Reduce the weight of the counterweight by a compensation amount in the same direction as the vector direction at the set position, where the reduction is G2. Alternatively, increase the weight of the counterweight by a compensation amount in the opposite direction of the vector direction at the set position, where the increase is G2. The vector direction is determined according to Figure 4. In Figure 4, vector A corresponds to the position of the counterweight's center of gravity. Vector B corresponds to the intersection point between the counterweight and flywheel 4.

[0129] Referring again to Figure 3, after dynamic balancing, in some embodiments, the dynamic balancing method for the flying point scanning device further includes the following steps:

[0130] Step S306: Measure the fifth amplitude of the flywheel 4 again after adjusting the weight.

[0131] Step S307: Determine whether the fifth amplitude is greater than or equal to the preset second amplitude.

[0132] Step S308: If the fifth amplitude is greater than or equal to the preset second amplitude, repeat the above dynamic balance adjustment steps until the measured fifth amplitude of the flywheel 4 is less than the preset second amplitude, and use the fifth amplitude at this time as the third amplitude of the adjusted flywheel 4.

[0133] Steps S306 to S308 described above involve cyclically detecting the vibration of the flywheel 4 until the fifth amplitude of the flywheel 4 is less than the preset second amplitude. This fifth amplitude is then used as the adjusted third amplitude of the flywheel 4, thus obtaining the third amplitude in step S300. The dynamically balanced flying point scanning device is then used to detect and image the object being tested.

[0134] After the flying-spot scanning device completes dynamic balancing, the dynamic imbalance of flywheel 4 will not be completely zero and cannot be eliminated. That is, during operation, the flying-spot scanning device will always have dynamic imbalance and centrifugal force, affecting the stable operation of flywheel 4. However, this amount has little impact on the accuracy of imaging, and the image quality can be improved by correcting the image.

[0135] In some embodiments, the dynamic balance adjustment method of the flying point scanning device further includes the following steps to detect the service life of the bearing 32 and issue a second alarm signal when the service life of the bearing 32 exceeds the design life.

[0136] First, the operating time of the bearing 32 in the transmission mechanism 3 is detected. Specifically, a sensor can be used to detect the operating time of the bearing 32.

[0137] Secondly, when the operating time of bearing 32 exceeds its service life, the flying point scanning device issues a second alarm signal. The second alarm signal can be an audible signal, a visual signal, etc.

[0138] If bearing 32 is a rolling bearing, the bearing life is determined according to ISO 281, and the bearing life L is... 10 The formula is:

[0139] Among them, L 10 The bearing's basic rated life (based on 90% reliability) is expressed in millions of revolutions (MRP). C represents the basic rated dynamic load, expressed in kN. P represents the bearing's equivalent dynamic load, expressed in kN. The bearing can be a ball bearing or a roller bearing; the value of P is determined according to the bearing type and industry standards. For ball bearings, P is 3; for roller bearings, P is 10 / 3.

[0140] The rated dynamic load C of bearing 32 is a parameter of bearing 32, which is determined at the factory. The equivalent dynamic load P of the bearing is calculated from the load and support method. Once the structure, load, and bearing model of flywheel 4 are determined, the speed life and time life of bearing 32 can be calculated.

[0141] The cumulative number of rotations L of bearing 32 can be calculated using a speed sensor and controller. When L > 0.9 × L 10 When the failure occurs, the controller will sound an alarm, prompting the operator to replace bearing 32 in a timely manner to avoid malfunctions or accidents caused by bearing 32 failure.

[0142] In some embodiments, the dynamic balancing method of the flying point scanning device can also realize lubricant life warning. The life tb of the bearing lubricant is provided by the manufacturer. The running time t of the bearing 32 is recorded by the control component or speed sensor. When t>0.9×tb, the flying point scanning device issues a second alarm signal, prompting the operator to replace the lubricant in time to avoid bearing 32 and equipment failure due to lubricant failure.

[0143] The dynamic balance adjustment method for the flying point scanning device provided by the above technical solution can adjust the dynamic balance of the flywheel 4 before the flying point scanning device forms an image, thereby improving the reliability and stability of the flying point scanning device.

[0144] Furthermore, the inventors discovered through research that due to the motion characteristics of the flying-spot scanning device itself, vibration is inevitable during operation. When the vibration exceeds a certain level, it will seriously affect the imaging quality. Therefore, it is necessary to correct the images scanned by the flying-spot imaging device when necessary to improve the imaging quality.

[0145] Referring to Figures 1 and 5, the flying-spot imaging device includes a flying-spot scanning device and a detector. The detector is positioned between the flying-spot scanning device and the object being inspected, and is used to receive X-rays reflected by the object being inspected.

[0146] Figure 6 is a schematic diagram of an image correction method for a flying-spot imaging device provided in some embodiments of this disclosure. Referring to Figure 6, some embodiments of this disclosure provide an image correction method for a flying-spot imaging device, including the following steps:

[0147] Step S100a: Calculate the correction parameters based on the first amplitude of the flywheel of the flying point imaging device.

[0148] The correction parameter x is, for example, the ratio of the first amplitude s to the height h of a single pixel in the image captured by the flying-spot imaging device, i.e., x = s / h. The imaging accuracy of the flying-spot imaging device is determined according to the requirements of the actual application scenario. Once the imaging accuracy of the flying-spot imaging device is determined, the height of a single pixel is also determined.

[0149] Step S200a: Determine whether the correction parameter is greater than the first preset parameter. The first preset parameter is a value set in advance according to the imaging accuracy requirements, for example, 1 to 5.

[0150] Step S300a: If the correction parameter is greater than the first preset parameter, the image scanned by the flying point imaging device is corrected. If the correction parameter is greater than the first preset parameter, it indicates that the first amplitude of the flywheel is relatively large. The first amplitude of the flywheel has a significant impact on the image quality, so the image scanned by the flying point imaging device needs to be corrected. During correction, x is rounded down according to the rounding function, i.e., y = INT(x), and the image is corrected according to the value of y.

[0151] In some embodiments, the image correction method for the flying spot imaging device further includes the step S400a: if the correction parameter is less than or equal to a first preset parameter, then no correction is performed on the image scanned by the flying spot imaging device. If the correction parameter is less than or equal to the first preset parameter, it indicates that the first amplitude of the flywheel is relatively small, and the influence of the first amplitude of the flywheel on the imaging quality can be ignored, so there is no need to correct the image scanned by the flying spot imaging device.

[0152] Figure 9 illustrates a comparison of the correction effects of the image correction method of the flying spot imaging device provided in some embodiments of this disclosure. The object being detected is shown in (a). Normally, the thicker the object being detected, the darker the corresponding area in the scanned image. However, due to the vibration of the flywheel 4, the image shown in (c) is obtained. This image does not reflect the actual situation of the object being detected. However, after correcting the image shown in (c), for example, by shifting the data that was misaligned due to vibration down one pixel, the image shown in (b) can be obtained, which corresponds to the actual situation.

[0153] In some embodiments, before step S300a and after step S200a, the flying spot imaging device image correction method further includes the following step S500a.

[0154] In step S500a, provided that the correction parameter is greater than the first preset parameter, before correcting the image scanned by the flying-spot imaging device, it is determined whether the correction parameter is greater than the second preset parameter; wherein, the second preset parameter is greater than the first preset parameter. The value of the second preset parameter is, for example, 3 to 5 times the first preset parameter.

[0155] If the correction parameter is less than or equal to the second preset parameter, then proceed to step S300a, as shown in Figure 6. If the correction parameter is greater than the second preset parameter, then proceed to step S600a.

[0156] Step S600a: If the correction parameter is greater than the second preset parameter, the flying spot imaging device is shut down. When the correction parameter exceeds the second preset parameter, it indicates that the flywheel 4 of the flying spot imaging device vibrates significantly, resulting in poor image quality that is difficult to correct. In this case, the flying spot imaging device is shut down for maintenance. Scanning and imaging will resume after the maintenance is completed. Both the first and second preset parameters are values ​​characterizing the degree of influence of amplitude on imaging accuracy.

[0157] Figure 7 is a schematic diagram of a method for dynamically balancing a flywheel using a flying spot imaging device provided in an embodiment of this disclosure. Figure 8 is a schematic diagram of a method for balancing a flywheel.

[0158] Referring to Figure 7, in some embodiments, before step S100a of calculating the correction parameters based on the first amplitude of the fly-spot imaging device's flywheel 4, the image correction method for the fly-spot imaging device further includes the following steps:

[0159] Step S700a: Determine whether dynamic balancing adjustment is needed based on the first amplitude and the preset second amplitude of the flywheel of the flying point imaging device. In this paper, dynamic balancing adjustment refers to reducing or eliminating vibration by adjusting the mass distribution of the flywheel 4, so that the flywheel 4 remains stable during movement.

[0160] In step S800a, if the first amplitude is greater than or equal to the preset second amplitude, the flywheel is dynamically balanced until the measured third amplitude of the adjusted flywheel is less than the preset second amplitude. The third amplitude of the flywheel at this time is taken as the first amplitude of the flywheel.

[0161] If the first amplitude is greater than or equal to the preset second amplitude, it indicates that the vibration of the flywheel 4 is too large. The image scanned by the flying point scanning device may have a large deviation from the actual image. It is no longer possible to correct the image scanned by the flying point imaging device using the methods shown in Figures 6 and 9. Therefore, it is necessary to first adjust the dynamic balance of the flywheel 4.

[0162] If the first amplitude is less than the preset second amplitude, it means that the flywheel 4 vibrates little, and in this case, there is no need to perform dynamic balancing adjustment on the flywheel 4.

[0163] Referring to Figure 8, in some embodiments, the following steps are used to perform dynamic balancing of the flywheel:

[0164] Step S801: Set the rotation speed, start the flying point imaging device, and measure the first amplitude A of the flywheel.

[0165] In step S801 above, the control component obtains the first amplitude of the flywheel 4 based on the detection parameters of the vibration detection component 51. The vibration detection component 51 can directly detect the amplitude of the flywheel 4. The amplitude of the flywheel 4 before dynamic balancing is the first amplitude. The set rotational speed is a pre-set parameter, set according to the actual scenario of the fly-point scanning device.

[0166] In step S802, a counterweight is added at a predetermined position on the edge of the flywheel 4. The weight of the counterweight is G1. The predetermined position can be any position on the edge of the flywheel 4, for example, the edge of the flywheel 4 itself. The counterweight is fixedly connected to the flywheel 4. After adding the counterweight, the counterweight and the flywheel 4 rotate synchronously. The weight distribution of the rotatable part of the flying point scanning device changes, and the rotational characteristics of the flywheel 4 of the flying point scanning device also change accordingly. After the rotational characteristics of the flywheel 4 change, the amplitude of the flywheel 4 may increase or decrease, which does not affect the adjustment in step S803.

[0167] In step S803, the flywheel 4 with counterweight is started with the set rotation speed, and the fourth amplitude B of the flywheel 4 is measured.

[0168] Step S804: Based on the first amplitude A, the fourth amplitude B, and the weight G1 of the counterweight, calculate the compensation amount G2 that needs to be changed in the weight of the flywheel 4. Specifically, calculate the compensation amount using the following formula: G2 = A * G1 / (BA).

[0169] Step S805: Stop the flywheel 4 with counterweight.

[0170] Step S806: Reduce the weight of the counterweight by a compensation amount in the same direction as the vector direction at the set position, where the reduction is G2. Alternatively, increase the weight of the counterweight by a compensation amount in the opposite direction of the vector direction at the set position, where the increase is G2. The vector direction is determined according to Figure 4. In Figure 4, vector A corresponds to the position of the counterweight's center of gravity. Vector B corresponds to the intersection point between the counterweight and flywheel 4.

[0171] Returning to Figure 8, after dynamic balancing, in some embodiments, the dynamic balancing of the flywheel further includes the following steps:

[0172] Step S807: Measure the fifth amplitude of the flywheel 4 again after adjusting the weight.

[0173] Step S808: Determine whether the fifth amplitude is greater than or equal to the preset second amplitude.

[0174] Step S809: If the fifth amplitude is greater than or equal to the preset second amplitude, repeat the above dynamic balance adjustment steps until the measured fifth amplitude of the flywheel 4 is less than the preset second amplitude. Use the fifth amplitude at this time as the third amplitude of the adjusted flywheel 4.

[0175] Steps S807 to S809 described above involve cyclically detecting the vibration of the flywheel 4 until the fifth amplitude of the flywheel 4 is less than the preset second amplitude. This fifth amplitude is then used as the third amplitude of the flywheel 4 after dynamic balance adjustment, thus obtaining the third amplitude in step S800. The adjusted flying point scanning device is then used to detect and image the object being tested; the amplitude of the flywheel 4 during its movement is the third amplitude.

[0176] After the flying-spot scanning device completes the dynamic balancing adjustment, the dynamic imbalance of the flywheel 4 will not be completely zero and cannot be eliminated. That is, during operation, the flying-spot scanning device will always have dynamic imbalance and centrifugal force, affecting the stable operation of the flywheel 4. However, this amount has little impact on the accuracy of imaging, and the image quality can be improved by correcting the image in step S300.

[0177] This disclosure provides a flying-spot scanning device adjustment system, including a memory and a processor coupled to the memory. The processor is configured to execute the flying-spot scanning device dynamic balance adjustment method of any of the foregoing embodiments based on instructions stored in the memory.

[0178] Memory may include, for example, system memory, fixed non-volatile storage media, etc. System memory may store, for example, the operating system, application programs, boot loader, and other programs.

[0179] This disclosure also provides a computer-readable storage medium having a computer program stored thereon. When executed by a processor, the program implements the dynamic balancing method for the flying-spot scanning device in any of the above embodiments.

[0180] This disclosure provides a flying-spot scanning device adjustment system, including a memory and a processor coupled to the memory, the processor being configured to execute the flying-spot scanning device dynamic balance adjustment method of any of the foregoing embodiments based on instructions stored in the memory.

[0181] Memory may include, for example, system memory, fixed non-volatile storage media, etc. System memory may store, for example, the operating system, application programs, boot loader, and other programs.

[0182] Some embodiments of this disclosure also provide a computer-readable storage medium having a computer program stored thereon. When executed by a processor, this program implements the dynamic balancing method for the flying-spot scanning device in any of the above embodiments.

[0183] The processors described herein may include general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor, but in alternatives, it may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors cooperating with a DSP core, or any other such configuration.

[0184] Storage media can be any available medium that can be accessed by a computer. By way of example and not limitation, such computer-readable media may include RAM, ROM, EEPROM, CD-ROM or other optical disc storage, disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. Any connection is also properly referred to as computer-readable media. For example, if software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then such coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of media. As used herein, disk and disc include compact discs (CDs), laser discs, optical discs, digital multi-purpose discs (DVDs), floppy disks, and Blu-ray discs, where disks typically reproduce data magnetically, and discs reproduce data optically using lasers. Combinations of the above should also be included within the scope of computer-readable media.

[0185] Those skilled in the art will understand that the method embodiments of this disclosure can be provided as a method, system, or computer program product. Therefore, this disclosure can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this disclosure can take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0186] This disclosure is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to some embodiments of this disclosure. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in one or more flowchart illustrations and / or one or more block diagrams.

[0187] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means that implement the functions specified in one or more flowcharts and / or one or more block diagrams.

[0188] These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, such that the instructions, which execute on the computer or other programmable apparatus, provide steps for implementing the functions specified in one or more flowcharts and / or one or more block diagrams.

[0189] In the description of this disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this disclosure.

[0190] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and not to limit them; although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this disclosure or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in this disclosure.

Claims

1. A flying-spot scanning device, comprising: The base (1) is configured to provide support; The drive mechanism (2) is mounted on the base (1) and supported by the base (1); A transmission mechanism (3) is mounted on the base (1) and supported by the base (1); the transmission mechanism (3) is driven to rotate under the drive of the drive mechanism (2); The flywheel (4) is driven to connect with the transmission mechanism (3) so as to rotate with the rotation of the transmission mechanism (3); The detection mechanism (5) includes a vibration detection component (51); the vibration detection component (51) is installed on the transmission mechanism (3) to detect the amplitude of the transmission mechanism (3); as well as A control component, electrically connected to the detection mechanism (5), is configured to calculate whether the vibration of the flywheel (4) during its movement meets the requirements based on the amplitude detected by the vibration detection component (51).

2. The flying-spot scanning device according to claim 1, wherein the detection mechanism (5) further comprises: A temperature detection component (53) is installed on the transmission mechanism (3) and / or the drive mechanism (2) to detect the temperature of the transmission mechanism (3) and / or the drive mechanism (2).

3. The flying-spot scanning device according to claim 2, wherein the driving mechanism (2) comprises: The motor mount (21) is arranged at a distance from the transmission mechanism (3); as well as A motor (22) is mounted on the motor mount (21); the motor (22) is driven to connect with the transmission mechanism (3) to drive the transmission mechanism (3) to rotate.

4. The flying-spot scanning device according to claim 3, wherein the transmission mechanism (3) comprises: A bearing housing (31) is installed on the base (1); the bearing housing (31) is located between the flywheel (4) and the motor housing (21); Bearing (32), mounted in the bearing housing (31); and The drive shaft (33) is supported by the bearing (32); one end of the drive shaft (33) is driven to the motor (22), and the other end of the drive shaft (33) is driven to the flywheel (4).

5. The flying point scanning device according to claim 4, wherein the number of the temperature detection components (53) is multiple, at least one of the temperature detection components (53) is installed in the housing of the motor mount (21), and at least one of the temperature detection components (53) is installed in the bearing mount (31).

6. The flying-spot scanning device according to claim 1, wherein the detection mechanism (5) further comprises: A distance detection element (52) is installed near the flywheel (4) and configured to detect the radial offset of the flywheel (4) in a stationary state; the control component is electrically connected to the distance detection element (52) and is also configured to calculate whether the position of the flywheel (4) in a stationary state meets the requirements based on the radial offset of the flywheel (4) detected by the distance detection element (52) in a stationary state.

7. A flying-spot imaging device, comprising the flying-spot scanning device according to any one of claims 1 to 6.

8. A method for dynamic balance adjustment of a flying-spot scanning device, comprising the following steps: With a set rotation speed, start the flying point scanning device according to any one of claims 1 to 6, and measure the first amplitude of the flywheel (4) of the flying point scanning device; Determine whether the first amplitude is greater than or equal to a preset second amplitude; If the first amplitude is greater than or equal to the preset second amplitude, the flywheel (4) is dynamically balanced until the measured third amplitude of the adjusted flywheel (4) is less than the preset second amplitude.

9. The dynamic balance adjustment method for the flying point scanning device according to claim 8, wherein the flywheel (4) is dynamically balanced using the following steps: Add a counterweight at a predetermined position on the edge of the flywheel (4); At the set rotation speed, start the flywheel (4) with the counterweight, and measure the fourth amplitude of the flywheel (4); Based on the first amplitude, the fourth amplitude, and the weight of the counterweight, calculate the amount of compensation required to change the weight of the flywheel (4); Stop the flywheel (4) with the counterweight; The weight of the counterweight is reduced by the compensation amount in the same direction as the vector direction at the set position, or the weight of the counterweight is increased by the compensation amount in the opposite direction of the vector direction corresponding to the set position.

10. The dynamic balance adjustment method for the flying-spot scanning device according to claim 9 further includes the following steps: The fifth amplitude of the flywheel (4) after weight adjustment was measured again; Determine whether the fifth amplitude is greater than or equal to the preset second amplitude; If the fifth amplitude is greater than or equal to the preset second amplitude, repeat the above dynamic balance adjustment steps until the measured fifth amplitude of the flywheel (4) is less than the preset second amplitude, and use the fifth amplitude at this time as the third amplitude of the adjusted flywheel (4).

11. The dynamic balance adjustment method for the flying point scanning device according to claim 9, wherein the compensation amount is calculated using the following formula: G2=A*G1 / (BA); in, G2 is the compensation amount, G1 is the weight of the counterweight, A is the first amplitude, and B is the second amplitude.

12. A dynamic balance adjustment system for a flying-spot scanning device, comprising: Memory; and A processor coupled to the memory, the processor being configured to execute the dynamic balancing method for a flying-spot scanning device as described in any one of claims 8 to 11, based on instructions stored in the memory.

13. A computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the dynamic balance adjustment method for a flying-spot scanning device as described in any one of claims 8 to 11.

14. An image correction method for a flying-spot imaging device, comprising the following steps: The correction parameters are calculated based on the first amplitude of the flywheel (4) of the flying point imaging device; Determine whether the correction parameter is greater than the first preset parameter; If the correction parameter is greater than the first preset parameter, the image scanned by the flying spot imaging device is corrected.

15. The image correction method for the flying-spot imaging device according to claim 14 further includes the following steps: If the correction parameter is less than or equal to the first preset parameter, the image scanned by the flying point imaging device will not be corrected.

16. The image correction method for the flying-spot imaging device according to claim 14 further includes the following steps: Provided that the correction parameter is greater than the first preset parameter, before correcting the image scanned by the flying point imaging device, it is determined whether the correction parameter is greater than the second preset parameter; wherein, the second preset parameter is greater than the first preset parameter; If the correction parameter is greater than the second preset parameter, the flying point imaging device will be shut down.

17. The image correction method for a flying spot imaging device according to claim 14, wherein before the step of calculating the correction parameters based on the first amplitude of the flywheel (4) of the flying spot imaging device, the method further comprises the following step: Whether dynamic balance adjustment is needed is determined based on the first amplitude of the flywheel (4) of the flying point imaging device; If the first amplitude is greater than or equal to the preset second amplitude, the flywheel (4) is dynamically balanced until the measured third amplitude of the adjusted flywheel (4) is less than the preset second amplitude. The third amplitude of the flywheel (4) at this time is taken as the first amplitude of the flywheel (4).

18. The image correction method for the flying spot imaging device according to claim 17, wherein the following steps are used to perform dynamic balance adjustment on the flywheel (4): The flying point imaging device is activated at a set rotation speed to measure the first amplitude of the flywheel (4); Add a counterweight at a predetermined position on the edge of the flywheel (4); At the set rotation speed, start the flywheel (4) with the counterweight, and measure the fourth amplitude of the flywheel (4); Based on the first amplitude, the fourth amplitude, and the weight of the counterweight, calculate the amount of compensation required to change the weight of the flywheel (4); Stop the flywheel (4) with the counterweight; The weight of the counterweight is reduced by the compensation amount in the same direction as the vector direction at the set position, or the weight of the counterweight is increased by the compensation amount in the opposite direction of the vector direction corresponding to the set position.

19. The image correction method for a flying-spot imaging device according to claim 18, wherein the compensation amount is calculated using the following formula: G2=A*G1 / (BA); in, G2 is the compensation amount, G1 is the weight of the counterweight, A is the first amplitude, and B is the fourth amplitude.

20. The image correction method for the flying spot imaging device according to claim 18, wherein the dynamic balance adjustment of the flywheel (4) further includes the following steps: The fifth amplitude of the flywheel (4) after weight adjustment was measured again; Determine whether the fifth amplitude is greater than or equal to the preset second amplitude; If the fifth amplitude is greater than or equal to the preset second amplitude, repeat the above dynamic balance adjustment steps until the measured fifth amplitude of the flywheel (4) is less than the preset second amplitude, and use the fifth amplitude at this time as the third amplitude of the adjusted flywheel (4).

Images