Efficient X-ray imaging detection and identification equipment

By designing efficient X-ray imaging detection and identification equipment, and adjusting the working voltage and position of the X-ray tube using temperature sensors and mobile units, the problem of automatic segmentation of important organs and automatic recognition of trauma in the prior art is solved, and a more stable and accurate detection effect is achieved.

CN119545630AActive Publication Date: 2025-02-28THE FIRST MEDICAL CENT CHINESE PLA GENERAL HOSPITAL
View PDF 6 Cites 0 Cited by

Patent Information

Application Number
CN202411565248.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-05
Publication Date
2025-02-28
Estimated Expiration
2044-11-05

AI Technical Summary

Technical Problem

The prior art cannot realize automatic segmentation and automatic trauma recognition through intelligent segmentation and detection and identification algorithms, and exist in a tube current stabilization device for gate-controlled cold cathode X-ray sphere tube.

Method used

An efficient X-ray imaging detection and identification device is designed, including an X-ray emitting unit, a ray detection unit, a moving unit and a control unit. The operating voltage is determined by detecting the air temperature inside the X-ray tube by a temperature sensor, and the stability and accuracy of the detection are controlled by adjusting the opposite movement rate of the X-ray tube relative to the object to be detected and the distance between the X-ray tube and the detector array.

Benefits of technology

Extend the service life of X-ray tubes, improve the stability and accuracy of ray emission, realize the automatic segmentation and identification of important organs and trauma, and improve detection efficiency and accuracy.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN119545630A_ABST
    Figure CN119545630A_ABST
Patent Text Reader

Abstract

The invention relates to the field of high-efficiency X-ray imaging detection, in particular to high-efficiency X-ray imaging detection and identification equipment, which comprises an X-ray emission unit, a detection unit and a control unit, and is characterized in that the X-ray emission unit is used for emitting X-rays to a target position and comprises an X-ray tube, an excitation component and a temperature sensor; the ray detection unit is used for generating an X-ray detection image according to the X-rays and comprises a detector array and a signal processing assembly; the moving unit is used for adjusting the horizontal positions of the X-ray emission unit and the ray detection unit respectively; and the control unit is used for determining the working voltage of the X-ray tube, determining the detection stability and determining a stability adjustment mode according to the detection stability. According to the invention, automatic segmentation of important organs and automatic identification of wound conditions are realized through an intelligent segmentation and detection identification algorithm.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The present invention relates to the field of high-efficiency X-ray imaging detection, and in particular to a high-efficiency X-ray imaging detection and identification device. Background Art

[0002] Traditional hot cathode X-ray tubes have some limitations, such as long start-up time, high energy consumption, and large size. This has prompted the research and development of new X-ray sources. The continuous progress of cold cathode technology in the field of electronics has provided possibilities for the innovation of X-ray tubes. The research on cold cathode materials and structures has improved the efficiency of electron emission and extended the life. In the fields of medical diagnosis, industrial non-destructive testing, safety inspection, etc., the performance requirements for X-ray detection equipment are constantly increasing, such as higher resolution, faster imaging speed, and lower radiation dose. The development of image processing and computer technology has enabled more complex and precise processing and analysis of images obtained by X-ray detection, thereby improving the accuracy and reliability of detection. The emergence of new detector materials and shielding materials has helped to improve the performance and safety of detection equipment. With the enhancement of energy and environmental awareness, the requirements for energy consumption and radiation protection of X-ray detection equipment have become more and more stringent, promoting the development of high-efficiency and low-radiation technologies.

[0003] Chinese patent publication number CN103260327B discloses a tube current stabilizing device for a grid-controlled cold cathode X-ray tube, the structure of which consists of an isolated rectifier, a high-frequency inverter, a closed-loop control, a reference unit, a grid-controlled tube, a current sampling, a grid voltage sampling, and an addition unit. The device is characterized in that: the grid power detection unit and the tube current sampling unit automatically collect the changes in the grid power and the tube current during exposure, and the mode selection unit judges the sampled grid power voltage and tube current and selects the corresponding working mode to control the tube current and exposure time. The advantages are: by controlling the output power of the grid power, the grid power meets the normal working requirements of the machine and the high voltage requirements, and by time control, the dose requirements of the rays are met. It can be seen that the tube current stabilizing device for a grid-controlled cold cathode X-ray tube has the problem that it cannot realize the automatic segmentation of important organs and the automatic identification of trauma through intelligent segmentation and detection and recognition algorithms. Summary of the invention

[0004] To this end, the present invention provides a highly efficient X-ray imaging detection and identification device to overcome the problem in the prior art that it is impossible to achieve automatic segmentation of important organs and automatic identification of trauma through intelligent segmentation and detection and identification algorithms.

[0005] To achieve the above object, the present invention provides a highly efficient X-ray imaging detection and identification device, comprising:

[0006] An X-ray emitting unit, comprising an X-ray tube for emitting X-rays to a target position, an excitation assembly connected to the X-ray tube for exciting the X-rays, and a temperature sensor connected to the X-ray tube for detecting an internal air temperature;

[0007] a ray detection unit connected to the X-ray emitting unit and used to generate an X-ray detection image of the X-ray, comprising a detector array connected to the excitation component and used to convert the X-rays penetrating the detection object into electrical signals;

[0008] a moving unit, which is connected to the X-ray emitting unit and the ray detecting unit, respectively, and is used to adjust the horizontal positions of the X-ray emitting unit and the ray detecting unit, respectively;

[0009] A control unit, which is connected to the X-ray emitting unit, the ray detection unit and the moving unit respectively, is used to determine the working voltage of the X-ray tube according to the internal air temperature, and to determine the detection stability and the stability adjustment method according to the variance of the interval time between the emission time and the imaging time of a plurality of X-rays, including:

[0010] Adjust the opposite movement rate of the mobile unit, or determine the distance between the X-ray tube and the detector array according to the display density of the feature points of the image, or adjust the adjustment speed of the distance between the X-ray tube and the detector array according to the interval between the emission time of the X-ray and the reception time of the X-ray by the detector array.

[0011] Furthermore, the X-ray emitting unit further comprises:

[0012] A high voltage driver connected to the X-ray tube to provide an excitation voltage for the X-ray tube to generate X-rays;

[0013] A power supply is connected to the high voltage driver and is used to provide electrical energy to the high voltage driver.

[0014] Furthermore, the ray detection unit also includes a signal processing component connected to the detector array for converting the electrical signal into an X-ray detection image.

[0015] Furthermore, the mobile unit comprises:

[0016] A first moving assembly, connected to the high voltage driver, for adjusting the opposite moving speed of the X-ray tube relative to the object to be detected;

[0017] The second moving component is connected to the X-ray tube and is used to adjust the distance between the X-ray tube of the X-ray emitting unit and the detector array.

[0018] Furthermore, the control unit determines the degree of damage to the device structure according to the air temperature inside the X-ray tube. If the air temperature inside the X-ray tube is greater than a preset temperature, it is determined that the degree of damage to the device structure does not meet the requirements, and the operating voltage of the X-ray tube is reduced.

[0019] Furthermore, the control unit determines the stability of the detection based on the variance of the interval time between several X-ray emission moments and the imaging display moment. If the variance of the interval time is greater than a preset second variance, it is determined that the stability of the detection does not meet the requirements and the opposite movement rate is increased.

[0020] Furthermore, if the variance of the interval time between the several X-ray emission moments and the imaging display moments is greater than the preset first variance and less than or equal to the preset second variance, it is determined that the stability of the detection does not meet the requirements due to the fact that the effectiveness of the ray transmission does not meet the requirements, and the effectiveness of the ray transmission is secondarily determined based on the display density of the feature points of the image. If the display density of the feature points of the image is greater than the preset second display density, it is secondarily determined that the effectiveness of the ray transmission does not meet the requirements, and the distance between the X-ray tube and the detector array is shortened;

[0021] The display density of the image feature points is the ratio of the number of image feature points in the X-ray image region to the area of ​​the X-ray image region.

[0022] Further, if the interval between the emission time of the X-ray and the reception time of the X-ray by the detector array is greater than the preset interval, the adjustment speed of the distance between the X-ray tube and the detector array is increased;

[0023] The adjustment speed of the distance between the X-ray tube and the detector array is the ratio of the difference between the distance between the X-ray tube and the detector array before adjustment and the distance between the X-ray tube and the detector array after adjustment to the time taken to complete the distance adjustment.

[0024] Furthermore, the interval between the X-ray emission moment and the imaging display moment is the interval from the moment when the X-ray emission source emits X-rays to the moment when the image is presented on the display device; the display density of the feature points of the image is the ratio of the number of feature points to the image area.

[0025] Furthermore, the interval between the X-ray emission time and the X-ray reception time of the detector array is the time interval from the moment when the X-ray emission source starts to emit X-rays to the moment when the detector array receives the X-rays.

[0026] Compared with the prior art, the beneficial effects of the present invention are that, by setting an X-ray emission unit, a ray detection unit, a moving unit and a control unit, the present invention detects the air temperature inside the X-ray tube by a temperature sensor to determine the operating voltage, which helps to extend the service life of the X-ray tube and improve the stability and accuracy of ray emission; by setting to reduce the operating voltage of the X-ray tube, the problem of internal temperature increase caused by impact is overcome; by setting to increase the relative movement speed of the X-ray tube relative to the object to be detected to reduce the influence of airflow squeezing on the absorption or reflection and refraction of rays, the problem of ray loss due to wear of the window part is overcome, rapid detection is achieved, and detection efficiency is improved.

[0027] Furthermore, the present invention, by setting a first moving component and a second moving component, controls the movement of the high-voltage driver and the X-ray tube respectively by adjusting the relative movement rate of the X-ray tube relative to the object to be detected and the distance between the X-ray tube and the detector array, and sets an independent moving component, thereby overcoming the problem that different detection objects have different requirements for detection accuracy and resolution, increasing the versatility and applicability of the equipment, and thus improving the performance and reliability of the entire detection equipment.

[0028] Furthermore, the present invention overcomes the problem that due to the impact on the structure during previous use, part of the structure is partially deformed, thereby causing the internal resistance to increase, and the temperature rise rate is higher than when there is no impact by setting a preset temperature; the degree of damage to the equipment structure is determined according to the air temperature inside the X-ray tube, and the operating voltage is reduced when the temperature is too high, which can effectively prevent the equipment from causing serious structural damage due to overheating, extend the service life of the equipment, reduce the safety hazards that may be caused by excessive damage to the equipment, avoid abnormal X-ray emission due to damage to the equipment structure, and thus ensure the accuracy and reliability of X-ray detection; by reducing the operating voltage when the temperature is too high, potential equipment failures can be prevented, maintenance costs can be reduced, and it is helpful to maintain the stability of equipment performance, so that it can maintain a good working state during long-term operation.

[0029] Furthermore, the present invention overcomes the problem that the window part is worn out due to long-term use, which causes part of the gas to enter the X-ray tube, thereby causing the gas to absorb or reflect and refract the rays, thereby causing ray loss, by setting a preset first variance and a preset second variance; the stability of the detection is determined by the variance, and the opposite movement rate is increased when it does not meet the requirements, which helps to reduce the time fluctuation in the detection process and improve the consistency and reliability of the detection results; the instability is improved by adjusting the opposite movement rate to reduce the risk of misdiagnosis.

[0030] Furthermore, the present invention sets a preset interval time and adjusts the adjustment speed of the distance between the X-ray tube of the X-ray emitting unit and the detector array according to the interval time between the emission time of the X-rays and the reception time of the X-rays by the detector array, thereby overcoming the problem that the different absorption and scattering characteristics of X-rays due to the different densities of the objects to be detected result in different interval times when passing through different objects to be detected, reduces signal blur or distortion caused by inappropriate distance, and thus improves the clarity and resolution of imaging.

[0031] Furthermore, the present invention overcomes the problem that the transmission of rays in the air is interfered with when part of the material evaporates into the air due to the aging of the imaging structure during the ray transmission process by setting the first display density and the second display density. A preliminary judgment is made through the variance of the interval time, and then a secondary judgment is made in combination with the display density of the image feature points, so that the cause of the detection stability not meeting the requirements can be found more accurately; the distance between the X-ray tube and the detector array is adjusted according to the judgment result, and by adjusting the distance between the X-ray tube and the detector array, the divergence angle of the X-ray and the receiving angle of the detector are changed, thereby affecting the resolution of the imaging, which helps to optimize the ray transmission and improve the accuracy and reliability of the detection; different adjustment measures are taken for different degrees of feature point display density to improve the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the overall structure of a highly efficient X-ray imaging detection and identification device according to an embodiment of the present invention;

[0033] Figure 2 This is an overall structural block diagram of a highly efficient X-ray imaging detection and identification device according to an embodiment of the present invention;

[0034] Figure 3 This is a structural block diagram of a ray detection unit of a highly efficient X-ray imaging detection and identification device according to an embodiment of the present invention;

[0035] Figure 4 This is a flow chart of a highly efficient X-ray imaging detection and identification device according to an embodiment of the present invention;

[0036] The figure numbers are as follows: 1-detector array, 2-X-ray tube, 3-temperature sensor, 4-second moving assembly, 5-high voltage driver, 6-power supply, 7-control unit, 8-display unit, 9-fixed rod, 10-first moving assembly, 11-signal processing assembly. DETAILED DESCRIPTION

[0037] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0038] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0039] It will be understood by those skilled in the art that, unless otherwise stated, the singular forms "a", "an" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in this specification refers to the presence of features, integers, steps, operations, elements / components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements / components. It should be understood that when we refer to a module as being "connected" or "coupled" to another module, it may be directly connected or coupled to the other module, or there may be an intermediate unit. In addition, "connected" or "coupled" used herein may include wireless connection or wireless coupling.

[0040] See also Figure 1 , Figure 2 , Figure 3 as well as Figure 4 As shown, they are respectively an overall structural diagram of a highly efficient X-ray imaging detection and identification device according to an embodiment of the present invention, an overall structural block diagram, a structural block diagram of a ray detection unit, and a flow chart. An efficient X-ray imaging detection and identification device according to the present invention comprises:

[0041] An X-ray emitting unit, comprising an X-ray tube for emitting X-rays to a target position, an excitation assembly connected to the X-ray tube for exciting the X-rays, and a temperature sensor connected to the X-ray tube for detecting an internal air temperature;

[0042] A ray detection unit, connected to the X-ray emitting unit, for generating an X-ray detection image of the X-ray, comprising a detector array 1 connected to the excitation assembly for converting the X-ray penetrating the detection object into an electrical signal;

[0043] a moving unit, which is connected to the X-ray emitting unit and the ray detecting unit, respectively, and is used to adjust the horizontal positions of the X-ray emitting unit and the ray detecting unit, respectively;

[0044] A control unit, which is connected to the X-ray emitting unit, the ray detection unit and the moving unit respectively, is used to determine the working voltage of the X-ray tube according to the internal air temperature, and to determine the detection stability and the stability adjustment method according to the variance of the interval time between the emission time and the imaging time of a plurality of X-rays, including:

[0045] Adjust the opposite movement rate of the mobile unit, or determine the distance between the X-ray tube and the detector array 1 according to the display density of the feature points of the image, and adjust the adjustment speed of the distance between the X-ray tube of the X-ray emitting unit and the detector array 1 according to the interval between the emission time of the X-ray and the reception time of the X-ray by the detector array 1.

[0046] Specifically, the display unit 8 can be a display screen or an image display in practice.

[0047] In practice, the present invention sets an X-ray emission unit, a ray detection unit, a moving unit and a control unit, and uses a temperature sensor to detect the air temperature inside the X-ray tube to determine the operating voltage, which helps to extend the service life of the X-ray tube and improve the stability and accuracy of ray emission; by setting to reduce the operating voltage of the X-ray tube, the problem of internal temperature increase caused by impact is overcome; by setting to increase the relative movement speed of the X-ray tube relative to the object to be detected to reduce the influence of airflow squeezing on the absorption or reflection and refraction of rays, the problem of ray loss due to wear of the window part is overcome, rapid detection is achieved, and detection efficiency is improved.

[0048] Specifically, the X-ray emitting unit further includes:

[0049] A high voltage driver connected to the X-ray tube to provide an excitation voltage for the X-ray tube to generate X-rays;

[0050] A power supply is connected to the high voltage driver and is used to provide electrical energy to the high voltage driver.

[0051] The fixing rod 9 is connected to the X-ray tube 2 and is used to fix the position and posture of the X-ray tube 2 .

[0052] Specifically, the ray detection unit also includes a signal processing component connected to the detector array 1 for converting the electrical signal into an X-ray detection image.

[0053] Specifically, the mobile unit includes:

[0054] A first moving assembly 10, which is connected to the high-voltage driver 5 and is used to adjust the opposite moving speed of the X-ray tube relative to the object to be detected, and includes a first electric telescopic rod connected to the high-voltage driver 5;

[0055] The second moving assembly 4 is connected to the X-ray tube 2 and is used to adjust the distance between the X-ray tube of the X-ray emitting unit and the detector array 1 , and includes a motor-driven lead screw connected to the X-ray tube 2 .

[0056] In practice, the present invention sets a first movable component 10 and a second movable component 4, and controls the movement of the high-voltage driver 5 and the X-ray tube respectively by adjusting the relative movement rate of the X-ray tube relative to the object to be detected and the distance between the X-ray tube and the detector array 1, and sets independent movable components, thereby overcoming the problem that different detection objects have different requirements for detection accuracy and resolution, increasing the versatility and applicability of the equipment, and thus improving the performance and reliability of the entire detection equipment.

[0057] Specifically, the control unit determines the degree of damage to the device structure according to the air temperature inside the X-ray tube 2. If the air temperature inside the X-ray tube 2 is greater than a preset temperature, it determines that the degree of damage to the device structure does not meet the requirements and reduces the operating voltage of the X-ray tube 2.

[0058] Optionally, the preset temperature may range from [70°C, 80°C];

[0059] Preferably, the preferred embodiment of the preset temperature is 75°C;

[0060] In one embodiment, the air temperature inside the X-ray tube 2 is 85°C, and the degree of damage to the device structure is determined to be unsatisfactory. For every 2°C increase in the air temperature inside the X-ray tube 2 over a preset temperature, the operating voltage of the X-ray tube 2 is reduced by 3KV compared to the current operating voltage of the X-ray tube 2. The current operating voltage of the X-ray tube 2 is 90KV, and the reduced operating voltage of the X-ray tube 2 is 90-3×[(85-75) / 2]=75KV.

[0061] In practice, the present invention overcomes the problem that due to the impact on the structure during previous use, part of the structure is partially deformed, thereby causing the internal resistance to increase, and the temperature rise rate is higher than when there is no impact by setting a preset temperature; the degree of damage to the equipment structure is determined according to the air temperature inside the X-ray tube, and the operating voltage is reduced when the temperature is too high, which can effectively prevent the equipment from causing serious structural damage due to overheating, extend the service life of the equipment, reduce the safety hazards that may be caused by excessive damage to the equipment, avoid abnormal X-ray emission due to damage to the equipment structure, and thus ensure the accuracy and reliability of X-ray detection; by reducing the operating voltage when the temperature is too high, potential equipment failures can be prevented, maintenance costs can be reduced, and it is helpful to maintain the stability of equipment performance, so that it can maintain a good working state during long-term operation.

[0062] Specifically, the control unit determines the stability of the detection based on the variance of the intervals between several X-ray emission moments and the imaging display moments. If the variance of the intervals is greater than a preset second variance, it is determined that the stability of the detection does not meet the requirements and the opposite movement rate is increased.

[0063] Optionally, the preset second variance value range may be (3s, 6s];

[0064] Preferably, the preferred embodiment of the preset second variance is 4s;

[0065] In a specific embodiment, the variance of the interval time is 7s, which is greater than the preset second variance, and the stability of the detection is determined to be unsatisfactory. When the variance of the interval time is greater than the preset second variance by 1s, the opposite movement rate increases to 1.1 times the current opposite movement rate. The current opposite movement rate is 13cm / s, and the increased opposite movement rate is 13×1.1 7-4 =17.3cm / s.

[0066] Specifically, if the variance of the interval time between the several X-ray emission moments and the imaging display moments is greater than the preset first variance and less than or equal to the preset second variance, it is determined that the stability of the detection does not meet the requirements due to the fact that the effectiveness of the ray transmission does not meet the requirements, and the effectiveness of the ray transmission is secondarily determined based on the display density of the feature points of the image. If the display density of the feature points of the image is greater than the preset second display density, it is secondarily determined that the effectiveness of the ray transmission does not meet the requirements, and the distance between the X-ray tube and the detector array 1 is shortened;

[0067] The display density of the image feature points is the ratio of the number of image feature points in the X-ray image region to the area of ​​the X-ray image region.

[0068] Optionally, the preset value range of the first variance may be [1s, 3s], and the preset value range of the second display density may be [8 pieces / mm 2 , 10 pieces / mm 2 ];

[0069] Preferably, the preferred embodiment of the preset first variance is 2s, and the preferred embodiment of the preset second display density is 9 pieces / mm 2 ;

[0070] In a specific embodiment, the variance of the interval duration is 2.5s, and the display density of the feature points of the image is 12 / mm 2 , the variance of the interval time length is greater than the preset first variance and less than the preset second variance, and it is determined that the stability of the detection does not meet the requirements because the effectiveness of the ray transmission does not meet the requirements;

[0071] The display density of the feature points of the image is greater than the preset second display density by 1 / mm 2, the distance between the X-ray tube and the detector array 1 is shortened by 5 cm compared with the current distance between the X-ray tube and the detector array 1. The current distance between the X-ray tube and the detector array 1 is 100 cm. The shortened distance between the X-ray tube and the detector array 1 is 100-5×(12-9)=85 cm.

[0072] In implementation, the present invention overcomes the problem of ray loss caused by wear and tear of the window due to long-term use, which causes part of the gas to enter the X-ray tube 2, thereby causing the gas to absorb or reflect and refract the rays, thereby causing ray loss, by setting a preset first variance and a preset second variance; the stability of the detection is determined by the variance, and the opposite movement rate is increased when the requirements are not met, which helps to reduce time fluctuations in the detection process and improve the consistency and reliability of the detection results; the instability is improved by adjusting the opposite movement rate to reduce the risk of misdiagnosis.

[0073] Specifically, if the interval between the emission time of the X-ray and the reception time of the X-ray by the detector array 1 is greater than the preset interval, the adjustment speed of the distance between the X-ray tube and the detector array 1 is increased;

[0074] The adjustment speed of the distance between the X-ray tube and the detector array 1 is the ratio of the difference between the distance between the X-ray tube and the detector array 1 before adjustment and the distance between the X-ray tube and the detector array 1 after adjustment to the time taken to complete the distance adjustment.

[0075] In implementation, the present invention sets a preset interval time and adjusts the adjustment speed of the distance between the X-ray tube of the X-ray emitting unit and the detector array 1 according to the interval time between the emission time of the X-rays and the reception time of the X-rays by the detector array 1. This overcomes the problem that the interval time of passing through different objects to be detected is different due to the different densities of the objects to be detected, thereby reducing signal blur or distortion caused by inappropriate distance, thereby improving the clarity and resolution of imaging.

[0076] Optionally, the preset interval duration may be in the range of [2s, 4s];

[0077] Preferably, the preferred embodiment of the preset interval duration is 3s;

[0078] In one or more specific embodiments, the interval between the emission time of the X-ray and the reception time of the X-ray by the detector array is 3.5s, which is greater than the preset interval time, and it is determined that the stability of the ray transmission does not meet the requirements;

[0079] When the interval between the emission time of the X-ray and the reception time of the X-ray by the detector array is greater than the preset interval time by 1s, the adjustment speed of the distance between the X-ray tube and the detector array 1 is increased to 1.2 times the current adjustment speed of the distance between the X-ray tube and the detector array 1. The current adjustment speed of the distance between the X-ray tube and the detector array 1 is 1.9cm / s, and the increased adjustment speed of the distance between the X-ray tube and the detector array 1 is 1.9×1.2 8-6 =2.736cm / s.

[0080] The distance between the X-ray tube and the detector array 1 is adjusted by a motor-driven lead screw.

[0081] In implementation, the present invention overcomes the problem that the transmission of rays in the air is interfered with when part of the material evaporates into the air due to the aging of the imaging structure during the ray transmission process by setting the first display density and the second display density. A preliminary judgment is made through the variance of the interval time, and then a secondary judgment is made in combination with the display density of the image feature points, so that the reason why the detection stability does not meet the requirements can be found more accurately; the distance between the X-ray tube and the detector array 1 is adjusted according to the judgment result, and by adjusting the distance between the X-ray tube and the detector array 1, the divergence angle of the X-ray and the receiving angle of the detector are changed, thereby affecting the imaging resolution, helping to optimize ray transmission and improve the accuracy and reliability of detection; different adjustment measures are taken for different degrees of feature point display density to improve detection efficiency.

[0082] Specifically, the interval between the X-ray emission time and the imaging display time is the interval from the time when the X-ray emission source emits X-rays to the time when the image is presented on the display device; the display density of the feature points of the image is the ratio of the number of feature points to the image area;

[0083] Among them, the interval time between n X-ray emission moments and imaging display moments, and the calculation process of the variance of the interval time are conventional technical means well known to those skilled in the art, so the calculation process of the variance of the interval time will not be repeated here.

[0084] Specifically, the interval between the X-ray emission time and the X-ray reception time of the detector array 1 is the time interval from the moment when the X-ray emission source starts to emit X-rays to the moment when the detector array 1 receives the X-rays.

[0085] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. An efficient X-ray imaging detection and identification device, characterized in that: include: An X-ray emitting unit, comprising an X-ray tube for emitting X-rays to a target position, an excitation assembly connected to the X-ray tube for exciting the X-rays, and a temperature sensor connected to the X-ray tube for detecting an internal air temperature; a ray detection unit connected to the X-ray emitting unit and used to generate an X-ray detection image of the X-ray, comprising a detector array connected to the excitation component and used to convert the X-rays penetrating the detection object into electrical signals; a moving unit, which is connected to the X-ray emitting unit and the ray detecting unit, respectively, and is used to adjust the horizontal positions of the X-ray emitting unit and the ray detecting unit, respectively; A control unit, which is connected to the X-ray emitting unit, the ray detection unit and the moving unit respectively, is used to determine the working voltage of the X-ray tube according to the internal air temperature, and to determine the detection stability and the stability adjustment method according to the variance of the interval time between the emission time and the imaging time of a plurality of X-rays, including: Adjust the opposite movement rate of the mobile unit, or determine the distance between the X-ray tube and the detector array according to the display density of the feature points of the image, or adjust the adjustment speed of the distance between the X-ray tube and the detector array according to the interval between the emission time of the X-ray and the reception time of the X-ray by the detector array.

2. The high-efficiency X-ray imaging detection and identification device according to claim 1, characterized in that: The X-ray emitting unit further comprises: A high voltage driver connected to the X-ray tube to provide an excitation voltage for the X-ray tube to generate X-rays; A power supply is connected to the high voltage driver and is used to provide electrical energy to the high voltage driver.

3. The high-efficiency X-ray imaging detection and identification device according to claim 2, characterized in that: The ray detection unit also includes a signal processing component connected to the detector array for converting the electrical signal into an X-ray detection image.

4. The high-efficiency X-ray imaging detection and identification device according to claim 3, characterized in that: The mobile unit comprises: A first moving assembly, connected to the high voltage driver, for adjusting the opposite moving speed of the X-ray tube relative to the object to be detected; The second moving component is connected to the X-ray tube and is used for adjusting the distance between the X-ray tube and the detector array.

5. The high-efficiency X-ray imaging detection and identification device according to claim 4, characterized in that: The control unit determines the degree of damage to the device structure according to the air temperature inside the X-ray tube. If the air temperature inside the X-ray tube is greater than a preset temperature, it is determined that the degree of damage to the device structure does not meet the requirements and the operating voltage of the X-ray tube is reduced.

6. The high-efficiency X-ray imaging detection and identification device according to claim 5, characterized in that: The control unit determines the stability of the detection based on the variance of the intervals between several X-ray emission moments and the imaging display moments. If the variance of the intervals is greater than a preset second variance, it is determined that the stability of the detection does not meet the requirements and the opposite movement rate is increased.

7. The high-efficiency X-ray imaging detection and identification device according to claim 6, characterized in that: If the variance of the interval time between the several X-ray emission moments and the imaging display moments is greater than the preset first variance and less than or equal to the preset second variance, it is determined that the stability of the detection does not meet the requirements due to the fact that the effectiveness of the ray transmission does not meet the requirements, and the effectiveness of the ray transmission is secondary determined according to the display density of the feature points of the image. If the display density of the feature points of the image is greater than the preset second display density, it is secondary determined that the effectiveness of the ray transmission does not meet the requirements, and the distance between the X-ray tube and the detector array is shortened; The display density of the image feature points is the ratio of the number of image feature points in the X-ray image region to the area of ​​the X-ray image region.

8. The high-efficiency X-ray imaging detection and identification device according to claim 7, characterized in that: If the interval between the emission time of the X-ray and the reception time of the X-ray by the detector array is longer than the preset interval, the adjustment speed of the distance between the X-ray tube and the detector array is increased; The adjustment speed of the distance between the X-ray tube and the detector array is the ratio of the difference between the distance between the X-ray tube and the detector array before adjustment and the distance between the X-ray tube and the detector array after adjustment to the time taken to complete the distance adjustment.

9. The high-efficiency X-ray imaging detection and identification device according to claim 8, characterized in that: The interval between the X-ray emission time and the imaging display time is the interval from the time when the X-ray emission source emits X-rays to the time when the image is presented on the display device; the display density of the feature points of the image is the ratio of the number of feature points to the image area.

10. The high-efficiency X-ray imaging detection and identification device according to claim 9, characterized in that: The time interval between the X-ray emission time and the X-ray reception time of the detector array is the time interval from the moment when the X-ray emission source starts to emit X-rays to the moment when the detector array receives the X-rays.

Citation Information

Patent Citations

  • Tube current stabilizer for grid-control cold cathode X-ray bulb tube

    CN103260327B

  • X-ray detector

    CN101629914A

  • Method and device for determination of electrode spacing and X-ray tube

    CN107068523A

  • A mobile flat-panel CT imaging system for detecting brain soft tissue

    CN109199425A

  • Automatic air-calibration

    US20190269378A1