A CT device using optical cable and drag chain wiring

Abstract

The utility model discloses a CT device using optical cables and drag chain wiring, including a CT stator, a CT rotor, a drag chain, a hybrid optical cable, a stator adapter plate and a rotor adapter plate. The stator adapter plate is connected to the CT stator, and the rotor adapter plate is connected to the CT rotor. The stator end of the drag chain is connected to the stator adapter plate, and the rotor end is connected to the rotor adapter plate. The stator end of the hybrid optical cable is connected to the stator adapter plate, and the rotor end is connected to the rotor adapter plate. The hybrid optical cable passes through the interior of the drag chain. The CT device provided by the utility model converts the electrical signal transmitted between the CT stator and the CT rotor into an optical signal through the adapter plate and the hybrid optical cable, and replaces multiple control cables with a single hybrid optical cable. The problem of too many connecting cables and mutual interference between the static part and the moving part of the static CT device is solved. The problem of too large a drag chain due to too many cables and inconvenient disassembly and assembly of cables and drag chains is solved.

Description

Technical Field

[0001] The utility model relates to a CT device using optical cables and drag chain wiring, belonging to the technical field of medical equipment. Background Art

[0002] Static CT equipment is designed with a distributed layout of multiple X-ray sources, simulating the rotational scanning effect of spiral CT equipment by high-speed alternating beams to achieve scanning and image reconstruction. However, in actual applications, the rotation of the X-ray source requires the equipment to be electrically connected between the stator and the rotor through cables to ensure that the cables are not entangled or pulled when the rotor rotates.

[0003] In the prior art, the electrical connection between the stator and rotor of the CT equipment relies on cables, including signal cables and power cables. Signal cables such as CAN communication cables, network cables, and optical fibers are susceptible to electromagnetic interference from power cables, resulting in signal loss. In addition, the variety and quantity of cables make cable management complicated, the drag chain is large in size and weight, and the installation and removal process is cumbersome.

[0004] In order to solve these problems, a winding structure for CT equipment is disclosed in a Chinese patent application with application number 201811293049.5. The winding structure fixes the two ends of the cable separately through the design of a rotating shaft and a groove to reduce the random swinging and entanglement of the cable. This design helps to reduce the difficulty of system control and structural complexity while maintaining a fast scanning speed and a suitable scanning angle. Nevertheless, the diversity of cable types and quantities may still cause signal interference, and the installation and fixing process is still complicated, which is not conducive to the disassembly and assembly of CT equipment. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide a CT device using optical cables and drag chain wiring.

[0006] In order to achieve the above technical objectives, the utility model adopts the following technical solutions:

[0007] According to an embodiment of the utility model, a CT device using optical cables and drag chain wiring is provided, including a CT stator, a CT rotor, a drag chain, a hybrid optical cable, a stator adapter plate and a rotor adapter plate; wherein,

[0008] The stator adapter plate is connected to the CT stator, and the rotor adapter plate is connected to the CT rotor; the stator end of the drag chain is connected to the stator adapter plate, and the rotor end is connected to the rotor adapter plate;

[0009] The stator end of the hybrid optical cable is connected to the stator adapter plate, and the rotor end is connected to the rotor adapter plate; the hybrid optical cable passes through the interior of the drag chain.

[0010] Preferably, the hybrid optical cable includes a plurality of branch optical fibers; interfaces at both ends of each branch optical fiber include a CAN line optical fiber interface, a network cable optical fiber interface and an IO signal optical fiber interface.

[0011] Preferably, the stator adapter board includes a stator network hub module, a stator CAN optical fiber module and a stator IO conversion module;

[0012] The rotor adapter board includes a rotor network hub module, a rotor CAN optical fiber module and a rotor IO conversion module.

[0013] Preferably, the network cable optical fiber interface connects the stator network hub module and the rotor network hub module; the CAN line optical fiber interface connects the stator CAN optical fiber module and the rotor CAN optical fiber module; and the IO signal optical fiber interface connects the stator IO conversion module and the rotor IO conversion module.

[0014] Preferably, the CT rotor is rotatably installed in the CT stator and can rotate around a rotation axis; an arrangement space for the drag chain is provided between the CT rotor and the CT stator.

[0015] Preferably, the CT device further comprises a power cable; wherein a stator end of the power cable is connected to a power source of the CT stator, and a rotor end of the power cable is connected to an electrical device of the CT rotor; and the power cable passes through the interior of the drag chain.

[0016] Preferably, the stator adapter plate is arranged at the lower part of the CT stator.

[0017] Preferably, the drag chain, the hybrid optical cable and the power cable are connected to the lower part of the CT stator at one end, and the other ends are projected along the space between the CT stator and the CT rotor, with the rotation axis as the center, and extend in a clockwise direction.

[0018] Preferably, the lengths of the drag chain, the hybrid optical cable and the power cable meet the required lengths of the CT rotor rotating within 720° in a counterclockwise direction.

[0019] Compared with the prior art, the utility model provides a CT device that uses optical cables and drag chain wiring. The electrical signals transmitted between the CT stator and the CT rotor are converted into optical signals through an adapter plate and a hybrid optical cable, and a single hybrid optical cable replaces multiple control cables. The problem of too many connecting cables and mutual interference between the static part and the moving part of the static CT device is solved. The problem of too large a drag chain due to too many cables and inconvenient disassembly and assembly of cables and drag chains is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1This is a schematic diagram of the structure of a CT device using optical cables and drag chain wiring in an embodiment of the utility model;

[0021] Figure 2 for Figure 1 Electrical schematics of power cables and hybrid optical cables in;

[0022] Figure 3 for Figure 1 Schematic diagram of the structure of the hybrid optical cable;

[0023] Figure 4 for Figure 1 Drag chain in the diagram, schematic diagram of the structure in the initial position;

[0024] Figure 5 for Figure 1 Drag chain in the figure, schematic diagram of the structure of the first middle position;

[0025] Figure 6 for Figure 1 Drag chain in the diagram, schematic diagram of the structure of the second middle position;

[0026] Figure 7 for Figure 1 Drag chain in the diagram, schematic diagram of the structure of the third middle position;

[0027] Figure 8 for Figure 1 Drag chain in the drawing, schematic diagram of the structure of the end position. DETAILED DESCRIPTION

[0028] The technical content of the present utility model is described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] The technical concept in the embodiment of the utility model is: the rotor and stator of the CT machine are electrically connected and transmitted using a drag chain and a hybrid optical fiber cable (hereinafter referred to as an optical cable). The electrical signal of the stator is converted into an optical signal by a conversion module on the stator side, transmitted by the optical cable to the conversion module on the rotor side, and then converted into an electrical signal and transmitted to various electrical devices of the rotor. The drag chain is wrapped around the outside of the optical cable to limit the active trajectory and bending radius of the optical cable and protect the optical cable from mechanical damage.

[0030] like Figure 1As shown, the CT device provided by the embodiment of the utility model includes a CT stator 1, a CT rotor 2, a drag chain 3, a power cable 4, a hybrid optical cable 5, a stator adapter plate 6 and a rotor adapter plate 7. Among them, the CT stator 1 includes a stator frame, a rotor support and a rotating mechanism, the CT rotor 2 includes a rotor frame, an X-ray source, an inverter and a detector, the drag chain 3 is a cable drag chain that protects the internal cables and optical cables from external mechanical damage, and the power cable 4 is a high-voltage cable that provides electrical energy to the CT rotor 2. It should be noted that the "high voltage" of the high-voltage cable here refers to the control cable that transmits 4-20mA control signals.

[0031] The CT rotor 2 is rotatably installed in the CT stator 1, driven by a driver, and can rotate around a rotation axis, which is a rotation axis 10 arranged in the longitudinal direction (Z direction). The CT rotor 2 is braked by a brake and its position when stationary is limited. The installation position of the driver and the brake includes the CT stator 1 and the CT rotor 2. Between the CT rotor 2 and the CT stator 1, there is an arrangement space for the drag chain 3.

[0032] The stator end 31 of the drag chain 3 is connected to the stator adapter plate 6, and is connected to the CT stator 1 through the stator adapter plate 6. The rotor end 32 of the drag chain 3 is connected to the rotor adapter plate 7, and is connected to the CT rotor 2 through the rotor adapter plate 7. The stator end of the hybrid optical cable 5 is connected to the stator adapter plate 6, and the rotor end is connected to the rotor adapter plate 7. The stator adapter plate 6 and the rotor adapter plate 7 are collectively referred to as adapter plates, which are used to convert the electrical signal of the signal cable and the optical signal of the optical fiber cable to each other, and provide the installation position of the drag chain 3 and the signal interface of the hybrid optical cable 5. The electrical signals described here include 4-20mA DC control signals, such as gate switch signals, exposure indication signals, and emergency stop signals.

[0033] like Figure 2 As shown, the stator adapter board 6 includes a stator network hub module 111, a stator CAN optical fiber module 121 and a stator IO conversion module 131. The rotor adapter board 7 includes a rotor network hub module 112, a rotor CAN optical fiber module 122 and a rotor IO conversion module 132. The network cable of the CT stator 1 is connected to the stator network hub module 111 of the stator adapter board 6, converting the network cable signal from an electrical signal to an optical signal, and then the optical signal of the network cable signal is transmitted to the rotor network hub module 112 of the rotor adapter board 7 by the hybrid optical cable 5. The rotor network hub module 112 of the rotor adapter board 7 converts the optical signal of the network cable signal into an electrical signal and transmits it to the electrical equipment of the CT rotor 2.

[0034] Similarly, the CAN signal of the CT stator 1 is converted into an electrical signal and an optical signal by the stator CAN optical fiber module 121, and the gate switch signal, exposure indication signal and emergency stop signal are converted by the stator IO conversion module 131, and the optical signal is transmitted to the rotor adapter board 7 by the hybrid optical cable 5. The rotor CAN optical fiber module 122 and the rotor IO conversion module 132 of the rotor adapter board 7 convert the above optical signals into electrical signals and transmit them to the electrical equipment of the CT rotor 2.

[0035] like Figure 3 As shown, the hybrid optical cable 5 is a multi-interface, multi-mode, multi-number bundle optical fiber cable, which is a single multi-branch optical fiber cable, including single-mode and multi-mode hybrid optical fibers. The dynamic minimum bending radius of the hybrid optical cable 5 is 20 times the diameter of the optical cable. The two ends of the hybrid optical fiber 5 are the rotor end and the stator end, respectively, and the two ends include multiple branch optical fibers 51. The interfaces at both ends of the branch optical fibers 51 include a CAN line optical fiber interface 52, a network cable optical fiber interface 53, and an IO signal optical fiber interface 54. Among them, the CAN line optical fiber interface 52 is connected to the stator CAN optical fiber module 121 and the rotor CAN optical fiber module 122 of the adapter board, the network cable optical fiber interface 53 is connected to the stator network hub module 111 and the rotor network hub module 112 of the adapter board, and the IO signal optical fiber interface 54 is connected to the stator IO conversion module 131 and the rotor IO conversion module 132 of the adapter board.

[0036] like Figure 1 As shown, the stator adapter plate 6 is arranged at the lower part of the CT stator 1, and coincides with the projection of the rotating shaft 10 in the vertical direction. The rotor connection plate 7 is arranged on the CT rotor 2. The power cable 4 and the hybrid optical cable 5 pass through the interior of the drag chain 3, and the activity track and bending radius are limited by the drag chain 3. The stator end of the power cable 4 is connected to the power supply of the CT stator 1, and the rotor end is connected to the electrical equipment of the CT rotor 2. The two ends of the hybrid optical cable 5 are connected to the stator conversion plate 6 and the rotor conversion plate 7. The power cable 4 and the hybrid optical cable 5 pass through the drag chain 3 to connect the CT stator 1 and the CT rotor 2.

[0037] The stator ends of the drag chain 3, power cable 4 and hybrid optical cable 5 are connected to the CT stator 1, and are projected along the space between the CT stator 1 and the CT rotor 2 with the rotating shaft 10 as the center, in a clockwise direction (such as Figure 1 The rotor ends of the drag chain 3, the power cable 4 and the hybrid optical cable 5 are connected to the CT rotor 2.

[0038] The electrical signals of the CAN line, network cable and other IO signal lines are converted into optical signals through the stator adapter board 6, and the optical signals are input into the branch optical fibers 51 of the hybrid optical cable 5, transmitted to the rotor adapter board 7, converted into electrical signals and transmitted to the CT rotor 2 to control the electrical components of the CT rotor 2. Similarly, the electrical signals of the CT rotor 2 are converted into optical signals through the rotor adapter board 7, transmitted to the stator adapter board 6 through the hybrid optical cable 5, and then converted into electrical signals and transmitted to the CT stator 1.

[0039] During the transmission of the above-mentioned electrical signals, the electrical signals susceptible to interference from the power cable 4 are converted into optical signals and transmitted by the hybrid optical cable 5, thereby solving the problem of power cable interfering with the signal cable.

[0040] like Figure 4 As shown, this position is the initial position of the drag chain 3, the power cable 4 and the hybrid optical cable 5. Because the power cable 4 and the hybrid optical cable 5 pass through the interior of the drag chain 3 and are blocked by the drag chain 3, they are not visible in the figure. In this embodiment, the position of the drag chain 3 refers to the position of the power cable 4 and the hybrid optical cable 5, and the same applies below. Among them, the stator end 31 of the drag chain 3 is connected to the stator adapter plate 6 and is located at the lower part of the CT stator 1. The drag chain 3 is set in the space between the CT stator 1 and the CT rotor 2, and is projected with the rotating shaft 10 as the center of the circle, and is arranged and extended in a clockwise direction. The rotor end 32 of the drag chain 3 is connected to the rotor adapter plate 7, and is located at the upper right of the rotating shaft 10.

[0041] like Figure 5 As shown, this position is a position where the stator end 31 of the drag chain 3 rotates about 180° counterclockwise around the rotation axis 10 together with the CT rotor 2, and the drag chain 3 is wound around and extended on the CT rotor 2.

[0042] like Figure 6 As shown, this position is the position where the stator end 31 of the drag chain 3 rotates again about 180° in the counterclockwise direction around the rotation axis 10 together with the CT rotor 2, and the length of the drag chain 3 wrapped around the CT rotor 2 is further increased.

[0043] like Figure 7 As shown, the stator end 31 of the drag chain 3 continues to rotate about 90°, and the length of the drag chain 3 wound around the CT rotor 2 is further increased.

[0044] like Figure 8 As shown, this position is the end position of the drag chain 3, and the length of the drag chain 3 wound on the CT rotor 2 reaches the maximum. The stator end 31 of the drag chain 3 rotates at an angle of 360° and 200°. The lengths of the drag chain 3, the power cable 4, and the hybrid optical cable 5 meet the required length of the CT rotor 2 within 720° (e.g., 560°).

[0045] In the above-mentioned transmission process of electrical signals, the electrical signals susceptible to interference from the power cable 4 are converted into optical signals and transmitted by the hybrid optical cable 5, thus solving the problem of power cables interfering with signal cables. In addition, multiple signal cables are integrated into a hybrid optical cable, which reduces the volume and weight of the drag chain and cables. Therefore, the volume of the stator and rotor of the CT equipment can be reduced, the power level of the rotor's driver and brake can be reduced, and the equipment cost can be reduced while improving signal stability.

[0046] In summary, the utility model provides a CT device that uses optical cables and drag chain wiring. The electrical signals transmitted between the CT stator and the CT rotor are converted into optical signals through an adapter plate and a hybrid optical cable, and a single hybrid optical cable replaces multiple control cables. The problem of too many connecting cables and mutual interference between the static part and the moving part of the static CT device is solved. The problem of the drag chain being too large due to too many cables and the inconvenience of disassembling and assembling the cables and the drag chain is solved.

[0047] It should be noted that the above-mentioned multiple embodiments are only examples, and the technical solutions of the various embodiments can be combined, all of which are within the protection scope of the present utility model.

[0048] The terms "upper", "lower", "horizontal", "vertical", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0049] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0050] The above is a detailed description of a CT device using optical cables and drag chain wiring provided by the utility model. For a person skilled in the art, any obvious changes made to the utility model without departing from the essence of the utility model will constitute an infringement of the patent right of the utility model and will bear the corresponding legal liability.

Claims

1. A CT device using optical cable and drag chain wiring, characterized in that It includes CT stator, CT rotor, drag chain, hybrid optical cable, stator adapter plate and rotor adapter plate; among which, The stator adapter plate is connected to the CT stator, and the rotor adapter plate is connected to the CT rotor; the stator end of the drag chain is connected to the stator adapter plate, and the rotor end is connected to the rotor adapter plate; The stator end of the hybrid optical cable is connected to the stator adapter plate, and the rotor end is connected to the rotor adapter plate; the hybrid optical cable passes through the interior of the drag chain.

2. The CT device according to claim 1, characterized in that: The hybrid optical cable includes a plurality of branch optical fibers; interfaces at both ends of each branch optical fiber include a CAN line optical fiber interface, a network cable optical fiber interface and an IO signal optical fiber interface.

3. The CT device according to claim 2, characterized in that: The stator adapter board includes a stator network hub module, a stator CAN optical fiber module and a stator IO conversion module; The rotor adapter board includes a rotor network hub module, a rotor CAN optical fiber module and a rotor IO conversion module.

4. The CT device according to claim 3, characterized in that: The network cable optical fiber interface connects the stator network hub module and the rotor network hub module; the CAN line optical fiber interface connects the stator CAN optical fiber module and the rotor CAN optical fiber module; the IO signal optical fiber interface connects the stator IO conversion module and the rotor IO conversion module.

5. The CT device according to claim 4, characterized in that: The CT rotor is rotatably installed in the CT stator and can rotate around a rotation axis; an arrangement space for the drag chain is provided between the CT rotor and the CT stator.

6. The CT device according to claim 5, characterized in that Also includes power cables; among which, The stator end of the power cable is connected to the power supply of the CT stator, and the rotor end is connected to the electrical equipment of the CT rotor; the power cable passes through the interior of the drag chain.

7. The CT device according to claim 6, characterized in that: The stator adapter plate is arranged at the lower part of the CT stator.

8. The CT device according to claim 7, characterized in that: The drag chain, the hybrid optical cable and the power cable are connected to the lower part of the CT stator at one end, and the other ends are projected along the space between the CT stator and the CT rotor with the rotation axis as the center, and extend in a clockwise direction.

9. The CT device according to claim 8, characterized in that: The lengths of the drag chain, the hybrid optical cable and the power cable meet the required lengths of the CT rotor rotating within 720° in a counterclockwise direction.

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