Sectional type spliced DR mobile platform

Abstract

The utility model belongs to the technical field of image equipment, and particularly relates to a sectional type spliced DR moving platform which is composed of an X-ray tube, a beam limiting tube, a detector, an X-ray tube moving mechanism, a detector moving mechanism and a supporting frame. The X-ray tube moving mechanism and the detector moving mechanism are arranged, so that position movement of the X-ray tube and the detector can be realized, and the requirement of sectional type DR shooting is met; compared with complex equipment which can meet the image requirement through one-time exposure, the complex equipment is high in manufacturing cost, the whole structure is simple, segmented exposure can be carried out on a detected object only through position adjustment of the X-ray tube and the detector, the imaging quality is also guaranteed, and compared with the complex equipment which is high in manufacturing cost, the equipment cost is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of imaging equipment, and particularly relates to a segmented splicing DR mobile platform. Background Art

[0002] As a basic imaging diagnosis device, a digital radiography system (DR) has been widely used in clinics. In a DR system, X-rays generated by an X-ray tube pass through a collimator, pass through a lesion, and are absorbed by a digital detector and converted into digital signals, and the digital signals are processed by a processing system to generate images.

[0003] Existing DR devices generally adopt a fixed design, and the size and range of imaging are determined by the size specifications of the detector. The cost of the detector is proportional to the imaging area, and the larger the imaging area, the higher the cost. Due to the limited imaging area of small and medium-sized area arrays of detectors, only objects within the imaging area can be photographed. If a larger object needs to be photographed, a large area array detector needs to be replaced, and the cost will be very high. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the technical problems existing in the background art. For this reason, a segmented splicing DR mobile platform is provided.

[0005] In order to achieve the above purpose, the technical solutions adopted by the utility model are as follows:

[0006] A segmented splicing DR mobile platform includes a platform base, and a left gantry and a right gantry are respectively slidably installed on both sides of the platform base; an upper linear guide is fixedly installed between the tops of the left gantry and the right gantry, and a lower linear guide is fixedly installed between the lower parts of the left gantry and the right gantry; an X-ray tube is slidably installed on the upper linear guide, and a detector is slidably installed on the lower linear guide. The X-ray tube is located above the detector, and the X-ray tube emits X-rays downward, and the detector receives the X-rays.

[0007] The following is a further limited technical solution of the utility model. The upper linear guide and the X-ray tube are slidably connected through an upper motor, an upper reducer, an upper lead screw and an upper slider. Among them, the X-ray tube is fixedly installed on the upper slider. The upper slider is slidably connected with the upper linear guide and the upper slider is in threaded cooperation with the upper lead screw. The upper lead screw is connected to the output end of the upper motor through the upper reducer;

[0008] The lower linear guide and the detector are slidably connected through a lower motor, a lower reducer, a lower lead screw and a lower slider. Among them, the lower detector is fixedly installed on the lower slider. The lower slider is slidably connected with the lower linear guide and the lower slider is in threaded cooperation with the lower lead screw. The lower lead screw is connected to the output end of the lower motor through the lower reducer;

[0009] The sliding connection between the platform base and the left gantry is realized through a left motor, a left reducer, a left lead screw and a left slider. Among them, the left gantry is fixedly installed on the left slider, the left slider is slidably connected with the chute on the left side of the platform base, and the left slider is in threaded cooperation with the left lead screw. The left lead screw is connected to the output end of the left motor through the left reducer;

[0010] The sliding connection between the platform base and the right gantry is realized through a right motor, a right reducer, a right lead screw and a right slider. Among them, the right gantry is fixedly installed on the right slider, the right slider is slidably connected with the chute on the right side of the platform base, and the right slider is in threaded cooperation with the right lead screw. The right lead screw is connected to the output end of the right motor through the right reducer;

[0011] The operation of the left motor and the right motor is kept consistent.

[0012] The following is a further limited technical solution of the present utility model. A collimator tube is fixedly installed below the X-ray tube.

[0013] Compared with the prior art, the present utility model has the following technical effects:

[0014] By setting the X-ray tube moving mechanism and the detector moving mechanism, the present utility model can realize the position movement of the X-ray tube and the detector, meeting the requirements of segmented DR shooting. Compared with the complex equipment that completes the imaging requirements in one exposure, the complex equipment is expensive. The overall structure of the present utility model is simple. By only adjusting the positions of the X-ray tube and the detector, the object to be measured can be exposed in segments, and the imaging quality is also guaranteed. Compared with the expensive complex equipment, the equipment cost is greatly reduced.

[0015] The following further illustrates the present utility model in conjunction with the drawings and embodiments. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the embodiments or the prior art. Obviously, the following described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a simplified structural diagram of the mobile platform of the present utility model;

[0018] Figure 2 It is a connection relationship diagram of the components when the mobile platform of the present utility model is in use.

[0019] Reference numerals: 1, platform base; 2, left gantry; 3, right gantry; 4, upper linear guide; 5, lower linear guide; 6, X-ray tube; 7, detector; 8, upper slider; 9, lower slider; 10, collimator tube; 11, object to be measured. Detailed implementation manners

[0020] In order to make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will describe in detail the specific implementation manners of the present utility model with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0021] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0022] In the embodiments of the present utility model, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific situations.

[0023] As Figure 1 shown, a segmented splicing DR mobile platform is provided, which is composed of an X-ray tube 6, a collimator tube 10, a detector 7, an X-ray tube moving mechanism, a detector moving mechanism, and a support frame.

[0024] The X-ray tube 6 is located above the detector 7. The X-ray tube 6 emits X-rays downward through the collimator tube 10. The X-rays pass through the object to be measured 11 and are then received by the detector 7.

[0025] The X-ray tube 6 is installed on the support frame through the X-ray tube moving mechanism, so as to realize the position movement of the X-ray tube 6. Specifically: The X-ray tube moving mechanism consists of an upper motor, an upper speed reducer, an upper lead screw, an upper slider 8 and an upper linear guide rail 4; among them, the X-ray tube 6 is fixedly installed on the upper slider 8, the upper slider 8 is slidably connected with the upper linear guide rail 4 and the upper slider 8 is in threaded cooperation with the upper lead screw, and the upper lead screw is connected to the output end of the upper motor through the upper speed reducer; the upper linear guide rail 4 is fixedly installed between the tops of the left gantry 2 and the right gantry 3. When the upper motor operates, driven by the upper speed reducer, the upper lead screw rotates, so that the upper slider 8 slides along the upper linear guide rail 4, and finally the X-ray tube 6 slides along the upper linear guide rail 4, and the position adjustment of the X-ray tube 6 can be realized. It should be noted that, Figure 1 is the structural simplified diagram of this embodiment. The upper motor, the upper speed reducer and the upper lead screw are all buried in the upper linear guide rail 4. Therefore, the upper motor, the upper speed reducer and the upper lead screw are not shown in Figure 1 the figure.

[0026] The detector 7 is installed on the support frame through the detector moving mechanism, so as to realize the position movement of the detector 7. Specifically: The detector moving mechanism consists of a lower motor, a lower speed reducer, a lower lead screw, a lower slider 9 and a lower linear guide rail 5; among them, the detector 7 is fixedly installed on the lower slider 9, the lower slider 9 is slidably connected with the lower linear guide rail 5 and the lower slider 9 is in threaded cooperation with the lower lead screw, and the lower lead screw is connected to the output end of the lower motor through the lower speed reducer; the lower linear guide rail 5 is fixedly installed between the lower parts of the left gantry 2 and the right gantry 3. When the lower motor operates, driven by the lower speed reducer, the lower lead screw rotates, so that the lower slider 9 slides along the lower linear guide rail 5, and finally the detector 7 slides along the lower linear guide rail 5, and the position adjustment of the detector 7 can be realized. It should be noted that, Figure 1 is the structural simplified diagram of this embodiment. The lower motor, the lower speed reducer and the lower lead screw are all buried in the lower linear guide rail 5. Therefore, the lower motor, the lower speed reducer and the lower lead screw are not shown in Figure 1 the figure.

[0027] Furthermore, it should be noted that the position movement of the X-ray tube 6 and the position movement of the detector 7 can be run simultaneously or separately. In this embodiment, the position movement of the X-ray tube 6 and the position movement of the detector 7 are run simultaneously. Therefore, the X-ray tube 6 is always directly above the detector 7.

[0028] The support frame consists of a platform base 1, a left gantry 2 and a right gantry 3. Among them, the left gantry 2 and the right gantry 3 are respectively slidably installed on both sides of the platform base 1.

[0029] The left gantry 2 is installed on the platform base 1 through the left gantry moving mechanism, so as to realize the position movement of the left gantry 2. Specifically: The left gantry moving mechanism consists of a left motor, a left reducer, a left lead screw and a left slider; among them, the left gantry 2 is fixedly installed on the left slider, the left slider is slidably connected with the chute on the left side of the platform base 1 and the left slider is in threaded cooperation with the left lead screw, and the left lead screw is connected to the output end of the left motor through the left reducer. When the left motor operates, driven by the left reducer, the left lead screw rotates, so that the left slider slides in the chute on the left side of the platform base 1, and finally the left gantry 2 slides along the chute on the left side of the platform base 1, and the position adjustment of the left gantry 2 can be realized. It should be noted that, Figure 1 is the structural simplified diagram of this embodiment. The left motor, the left reducer, the left lead screw and the left slider are all buried in the chute on the left side of the platform base 1. Therefore, the left motor, the left reducer, the left lead screw and the left slider are not shown in Figure 1 it.

[0030] The right gantry 3 is installed on the platform base 1 through the right gantry moving mechanism, so as to realize the position movement of the right gantry 3. Specifically: The right gantry moving mechanism consists of a right motor, a right reducer, a right lead screw and a right slider; among them, the right gantry 3 is fixedly installed on the right slider, the right slider is slidably connected with the chute on the right side of the platform base 1 and the right slider is in threaded cooperation with the right lead screw, and the right lead screw is connected to the output end of the right motor through the right reducer. When the right motor operates, driven by the right reducer, the right lead screw rotates, so that the right slider slides in the chute on the right side of the platform base 1, and finally the right gantry 3 slides along the chute on the right side of the platform base 1, and the position adjustment of the right gantry 3 can be realized. It should be noted that, Figure 1 is the structural simplified diagram of this embodiment. The right motor, the right reducer, the right lead screw and the right slider are all buried in the chute on the right side of the platform base 1. Therefore, the right motor, the right reducer, the right lead screw and the right slider are not shown in Figure 1 it.

[0031] It should be noted that for the position movement of the left gantry 2 and the position movement of the right gantry 3, they must operate simultaneously, and the operation of the left motor and the right motor should be consistent to ensure that the left gantry 2 and the right gantry 3 move as a whole.

[0032] As Figure 2 shown, when the mobile platform of this embodiment is actually used, it should be noted that the methods, processes, algorithms and programs involved in the following use process of the mobile platform are not within the protection scope of the present utility model, and are only used for those skilled in the art to understand the specific use of the mobile platform of the present utility model. Its use process includes:

[0033] (1) The detector 7 is connected to the image processing unit through a data interface. The image processing unit is connected to the memory and the host computer. The X-ray tube moving mechanism, the detector moving mechanism, the left gantry moving mechanism, and the right gantry moving mechanism are all connected to the moving mechanism controller, and the moving mechanism controller is connected to the host computer;

[0034] (2) After initialization, the operator uses the host computer to plan and construct the shooting area according to the size of the object 11 to be measured, and adjusts the positions of the left and right gantries through the moving mechanism controller, so that the object 11 to be measured is placed below the collimator 10 and above the detector 7, and waits for exposure;

[0035] (3) At the beginning of the shooting process, the host computer executes a fixed program to send a control signal to the moving mechanism controller. After receiving the signal, the moving mechanism controller drives the motors of the X-ray tube moving mechanism and the detector moving mechanism to rotate; the X-ray tube 6 and the detector 7 move according to the information planned by the host computer;

[0036] (4) During the process, whenever the X-ray tube 6 and the detector 7 move a self-defined distance planned by the operator in the horizontal direction, the host computer will send a trigger command to the moving mechanism controller. After receiving the command, the moving mechanism controller will synchronously control the X-ray tube 6 and the detector 7, unlock the X-ray tube 6 for exposure, irradiate the target area, and the detector 7 readout circuit is started at the same time. When receiving the ray, it will collect the image digital signal of the current position;

[0037] (5) After the detector 7 completes the acquisition of a single-frame digital signal, it is sent to the image processing unit for processing. After the image processing unit generates the image data, according to the planning information of the host computer, it analyzes and processes the data, numbers and marks the timing position information, and stores it in the RAM. After the verification of the data stored in the RAM is completed, the image processing unit sends a return value signal to the host computer. The host computer controls the moving mechanism to move to the next position and performs exposure again. Repeat the above actions until the shooting planned by the operator is completed. During the process, the moving mechanism controller will also feedback the real-time position information data of each node to the host computer;

[0038] (6) After the shooting process is completed, the image processing unit sends the generated image and the marked information to the host computer for processing. The host computer algorithm splices and restores these images according to their information, and during the process, it will verify the data transmitted back by the image processing unit and the data feedback by the moving mechanism controller according to the unified timing. Finally, an image is generated, and this image is the complete image of the shooting area planned by the operator. Since it is a combined image, the number of pixels on this image is determined by the number of spliced images. The operator can modify the subdivision degree of exposure for each movement distance in the planned exposure process to determine the number of pixels of the image, so as to meet the resolution requirements;

[0039] (7) The finally generated stitched image is stored in the storage area of the host computer and displayed to the operator on the display screen. The operator can export the stitched image into a common image format for further diagnosis and analysis.

[0040] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, make many possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above, or modify it into equivalent embodiments with equivalent changes. Therefore, all equivalent changes made according to the shape, structure and principle of the present invention without departing from the content of the technical solution of the present invention shall be covered by the protection scope of the present invention.

Claims

1. A segmented splicing DR mobile platform, characterized in that: It comprises a platform base (1), and a left gantry (2) and a right gantry (3) are slidably mounted on both sides of the platform base (1); An upper linear guide rail (4) is fixedly installed between the tops of the left gantry (2) and the right gantry (3), and a lower linear guide rail (5) is fixedly installed between the bottoms of the left gantry (2) and the right gantry (3); The upper linear guide rail (4) is slidably mounted with an X-ray tube (6), and the lower linear guide rail (5) is slidably mounted with a detector (7). The X-ray tube (6) is located above the detector (7). The X-ray tube (6) emits X-rays downward, and the detector (7) receives the X-rays.

2. A segmented splicing DR mobile platform as claimed in claim 1, characterized in that: The upper linear guide rail (4) and the X-ray tube (6) are slidably connected via an upper motor, an upper reducer, an upper screw rod and an upper slider (8), wherein the X-ray tube (6) is fixedly mounted on the upper slider (8), the upper slider (8) is slidably connected to the upper linear guide rail (4), and the upper slider (8) is threadedly matched with the upper screw rod, and the upper screw rod is connected to the output end of the upper motor via the upper reducer; The lower linear guide rail (5) and the detector (7) are slidably connected via a lower motor, a lower reducer, a lower screw and a lower slider (9), wherein the lower detector (7) is fixedly mounted on the lower slider (9), the lower slider (9) is slidably connected to the lower linear guide rail (5), and the lower slider (9) is threadedly matched with the lower screw, and the lower screw is connected to the output end of the lower motor via the lower reducer; The platform base (1) and the left gantry (2) are slidably connected via a left motor, a left reducer, a left screw and a left slider, wherein the left gantry (2) is fixedly mounted on the left slider, the left slider is slidably connected to a slide groove on the left side of the platform base (1), and the left slider is threadedly matched with the left screw, and the left screw is connected to the output end of the left motor via the left reducer; The platform base (1) and the right gantry (3) are slidably connected via a right motor, a right reducer, a right screw and a right slider, wherein the right gantry (3) is fixedly mounted on the right slider, the right slider is slidably connected to a slide groove on the right side of the platform base (1), and the right slider is threadedly matched with the right screw, and the right screw is connected to the output end of the right motor via the right reducer; The working operation of the left motor and the right motor is consistent.

3. A segmented splicing DR mobile platform as claimed in claim 1, characterized in that: A limited beam tube (10) is fixedly installed below the X-ray tube (6).

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