A double tube X-ray machine rotating anode X-ray tube protection control demonstration circuit

Abstract

The utility model discloses a kind of rotating anode X-ray tube protection control demonstration circuit of double-tube X-ray machine, belong to X-ray machine demonstration teaching technical field, including power input module, round selection and high voltage exchange gate control module, exposure mode control module, tube current regulation control module, rotating anode drive and brake control module, X-ray tube delay protection control module and tube voltage regulation and exposure control module;Through the cooperative control of each module circuit, the experimental circuit for rotating anode X-ray tube protection control demonstration of double-tube X-ray machine is formed, in X-ray machine teaching, intuitively see the switching of X-ray machine working mode, the control logic relationship between each module and the real-time working state of each module, greatly improve teaching effect, reduce teaching difficulty;In addition, through the design of X-ray tube delay protection control module, the missing part in X-ray machine teaching process is made up, so that the whole teaching process is more complete, more clear.

Description

Technical Field

[0001] This utility model belongs to the technical field of X-ray machine demonstration and teaching, specifically relating to a protection control demonstration circuit for the rotating anode X-ray tube of a dual-tube X-ray machine. Background Technology

[0002] Medical X-ray machines are important imaging devices for clinical medical imaging examinations due to their convenience, powerful functions, and high cost-effectiveness.

[0003] The rotating anode X-ray tube in a medical diagnostic X-ray machine is the source device that generates X-rays and is an expensive and easily damaged medical consumable. To protect the X-ray tube, two technical measures are commonly used to prevent accelerated aging and damage. One is multiple operating modes: small focal spot imaging + rotating anode off-limits, small focal spot imaging + rotating anode on / off as needed, and large focal spot imaging + rotating anode on / off as needed. The other is that the X-ray machine is prohibited from exposure when the filament heating current or the rotating anode drive motor current or voltage is abnormal. The operating mode switching conditions, the control logic between functional circuits, and the circuit working principle are key teaching points. However, because the operating mode switching conditions need to match the clinical examination method and examination site, and the control logic depends on balancing the conflicting factors of image quality and X-ray tube lifespan, coupled with the complexity of the circuits and the abstract nature of the principles, these are also teaching challenges. Since physical X-ray machines are expensive and cannot be visually demonstrated regarding the operating mode switching conditions, the control logic relationships between functional circuits, and the real-time operating status, learners find it even more difficult to understand the rotating anode X-ray tube protection mechanism, control logic relationships, and working principle. Therefore, physical machines cannot be used in teaching. Currently, there is no teaching on X-ray tube protection functions in X-ray machine teaching. Furthermore, the existing teaching environment and conditions cannot intuitively demonstrate to students the switching of X-ray machine working modes, the control logic relationship between functional circuits, and the working status of each functional circuit. Therefore, the teaching process is very abstract, difficult for students to understand, the teaching effect is poor, and the teaching difficulty is very high.

[0004] Therefore, there is an urgent need for a dual-tube X-ray machine rotating anode X-ray tube protection control demonstration circuit that can transform the physical X-ray machine into an intuitive demonstration circuit, effectively improve the teaching effect of X-ray machine demonstration teaching, and reduce the teaching difficulty. Utility Model Content

[0005] The purpose of this invention is to provide a demonstration circuit for the protection and control of the rotating anode X-ray tube in a dual-tube X-ray machine, in order to solve the aforementioned problems existing in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a demonstration circuit for the protection and control of the rotating anode X-ray tube of a dual-tube X-ray machine, including: a power input module, a unit selection and high-voltage switching control module, an exposure mode control module, a tube current adjustment control module, a rotating anode drive and brake control module, an X-ray tube delay protection control module, and a tube voltage adjustment and exposure control module.

[0008] The power supply output terminal of the power input module is electrically connected to the power supply input terminals of the stage selection and high voltage switching control module, the exposure mode control module, the tube current adjustment control module, the rotating anode drive and brake control module, the X-ray tube delay protection control module, and the tube voltage adjustment and exposure control module, respectively.

[0009] The control signal output terminals of the stage selection and high-voltage switching control module are electrically connected to the exposure mode control module, the tube current regulation control module, the rotating anode drive and brake control module, and the tube voltage regulation and exposure control module, respectively. The control signal output terminals of the exposure mode control module are electrically connected to the tube current regulation control module, the rotating anode drive and brake control module, and the tube voltage regulation and exposure control module, respectively. The control signal output terminals of the tube current regulation control module are electrically connected to the X-ray tube delay protection control module and the tube voltage regulation and exposure control module, respectively. The control signal output terminal of the rotating anode drive and brake control module is electrically connected to the X-ray tube delay protection control module, and the control signal output terminal of the X-ray tube delay protection control module is electrically connected to the tube voltage regulation and exposure control module.

[0010] In one possible design, the power input module includes a three-hole single-phase power socket, a power switch, a first fuse, a protective varistor, a first resistor, a power indicator light, and a first transformer.

[0011] The three-hole single-phase power socket has its input terminal connected to AC power. Its neutral wire terminal is electrically connected to the first input terminal of the power switch. Its ground wire terminal is electrically connected to the second input terminal of the power switch. Its live wire terminal is electrically connected to the third input terminal of the power switch. The first output terminal of the power switch is electrically connected to the common terminal of the protective varistor, the first resistor, and the first transformer via the first fuse. The other end of the first resistor is electrically connected to one end of the power indicator light. The second output terminal of the power switch is electrically connected to the common terminal of the power indicator light, the protective varistor, and the first transformer.

[0012] The common terminal of the protective varistor, the first resistor, and the first transformer serves as the live wire terminal, and the common terminal of the power indicator light, the protective varistor, and the first transformer serves as the neutral wire terminal. The live wire terminal and the neutral wire terminal serve as the first power supply output terminal, which is electrically connected to the power supply input terminals of the stage selection and high-voltage switching control module, the exposure mode control module, the tube current adjustment control module, the rotating anode drive and braking control module, and the tube voltage adjustment and exposure control module. The secondary side of the first transformer serves as the second power supply output terminal, which is electrically connected to the power supply input terminal of the X-ray tube delay protection control module.

[0013] In one possible design, the session selection and high-voltage switching control module includes a second fuse, a session switching unit for examination bed I, a session switching unit for radiography bed II, a session switching indicator unit, and a high-voltage switching unit.

[0014] The live wire is electrically connected to one end of the on / off unit of the examination bed I, one end of the on / off unit of the radiography bed II, one end of the on / off unit of the on / off unit, and one end of the high-voltage switching unit after passing through the second fuse. The neutral wire is electrically connected to the other end of the on / off unit of the examination bed I, the other end of the on / off unit of the radiography bed II, the other end of the on / off unit of the on / off unit, and the other end of the high-voltage switching unit.

[0015] The on / off unit of the examination bed I serves as the first selection signal output terminal of the selection and high-voltage switching control module, and is electrically connected to the exposure mode control module, the tube current adjustment control module, and the rotating anode drive and brake control module, respectively. The on / off unit of the radiography bed II serves as the second selection signal output terminal of the selection and high-voltage switching control module, and is electrically connected to the exposure mode control module, the tube current adjustment control module, and the rotating anode drive and brake control module, respectively. The high-voltage switching unit serves as the switching signal output terminal of the selection and high-voltage switching control module, and is electrically connected to the tube voltage adjustment and exposure control module.

[0016] In one possible design, the station switching indicator unit includes a second resistor, a third resistor, a station I selection indicator light, a station II selection indicator light, a station I selection relay for the examination bed, and a station II selection relay for the radiography bed;

[0017] Wherein, one end of the second resistor serves as the input terminal of the electrical connection session switching indicator unit, and is electrically connected to the second fuse through the examination bed I session selection relay; the other end of the second resistor is electrically connected to one end of the I session selection indicator light; and the other end of the I session selection indicator light serves as the output terminal of the electrical connection session switching indicator unit and is electrically connected to the neutral wire terminal.

[0018] One end of the third resistor serves as the input terminal of the electrical connection stage switching indicator unit, and is electrically connected to the second fuse through the radiography bed II stage selection relay. The other end of the third resistor is then electrically connected to one end of the II stage selection indicator light, and the other end of the II stage selection indicator light serves as the output terminal of the electrical connection stage switching indicator unit, and is electrically connected to the neutral wire terminal.

[0019] In one possible design, the exposure mode control module includes a third fuse, a perspective exposure control unit, a spot photography exposure preparation control unit, a photography exposure preparation control unit, and an exposure mode indication unit.

[0020] The live wire is electrically connected to one end of the perspective exposure control unit, one end of the spot photography exposure preparation control unit, one end of the photography exposure preparation control unit, and one end of the exposure mode indicator unit via the third fuse. The neutral wire is electrically connected to the other end of the perspective exposure control unit, the other end of the spot photography exposure preparation control unit, the other end of the photography exposure preparation control unit, and the other end of the exposure mode indicator unit.

[0021] The perspective exposure control unit serves as the first exposure control terminal of the exposure mode control module, and is electrically connected to the tube current adjustment control module, the rotating anode drive and brake control module, and the tube voltage adjustment and exposure control module. The spot photography exposure preparation control unit serves as the second exposure mode control terminal of the exposure mode control module, and is electrically connected to the tube current adjustment control module, the rotating anode drive and brake control module, and the tube voltage adjustment and exposure control module. The photography exposure preparation control unit serves as the third exposure control terminal of the exposure mode control module, and is electrically connected to the tube current adjustment control module, the rotating anode drive and brake control module, and the tube voltage adjustment and exposure control module.

[0022] In one possible design, the exposure mode indicator unit includes a fourth resistor, a fifth resistor, a sixth resistor, a fluoroscopy indicator light, a spot film indicator light, a photography indicator light, a fluoroscopy exposure relay for examination bed I, a spot film photography exposure relay for examination bed I, and a photography exposure relay for photography bed II.

[0023] The common terminal of the fluoroscopy exposure relay for examination bed I, the spot radiography exposure relay for examination bed I, and the radiography exposure relay for radiography bed II is electrically connected to the third fuse. The fluoroscopy exposure relay for examination bed I is electrically connected to one end of the fluoroscopy indicator light through the fourth resistor. The spot radiography exposure relay for examination bed I is electrically connected to one end of the spot radiography indicator light through the fifth resistor. The radiography exposure relay for radiography bed II is electrically connected to one end of the radiography indicator light through the sixth resistor. The common terminal of the fluoroscopy indicator light, the spot radiography indicator light, and the radiography indicator light is electrically connected to the neutral wire terminal.

[0024] In one possible design, the tube current regulation control module includes a fourth fuse, a first current transformer, a fluoroscopy tube current regulation unit, a spot imaging tube current regulation unit, an imaging tube current regulation unit, and a large and small focus filament working indicator unit.

[0025] The live wire is electrically connected to a common terminal of one end of the first current transformer and one end of the large and small focus filament working indicator unit after passing through the fourth fuse. The other end of the first current transformer is electrically connected to a common terminal of one end of the fluoroscopy tube current adjustment unit, one end of the spot film imaging tube current adjustment unit, and one end of the imaging tube current adjustment unit. The neutral wire is electrically connected to a common terminal of the other end of the fluoroscopy tube current adjustment unit, the other end of the spot film imaging tube current adjustment unit, the other end of the imaging tube current adjustment unit, and the other end of the large and small focus filament working indicator unit.

[0026] The first current transformer serves as the first current regulation signal output terminal of the tube current regulation control module and is inductively coupled to the X-ray tube delay protection control module. The fluoroscopy tube current regulation unit, the spot radiography tube current regulation unit, and the radiography tube current regulation unit serve as the second current regulation signal output terminals of the tube current regulation control module and are inductively coupled to the tube voltage regulation and exposure control module.

[0027] In one possible design, the large and small focus filament working indicator unit includes a first three-throw switch, a second three-throw switch, a seventh resistor, an eighth resistor, a small focus working indicator light, a large focus working indicator light, a selection relay for examination bed I, a selection relay for radiography bed II, a fluoroscopy exposure relay for examination bed I, a spot radiography exposure relay for examination bed I, and a radiography exposure relay for radiography bed II.

[0028] The moving contact of the first three-throw switch is electrically connected to the fourth fuse, and the stationary contact of the first three-throw switch is electrically connected to the stationary contact of the second three-throw switch. The first and second moving contacts of the second three-throw switch are electrically connected to one end of the eighth resistor via the camera bed II selection relay and the camera bed II exposure relay. The other end of the eighth resistor is electrically connected to the neutral wire via the large focus working indicator light. The third moving contact of the second three-throw switch is electrically connected to one end of the seventh resistor via the camera bed II selection relay and the camera bed II exposure relay. The other end of the seventh resistor is electrically connected to the neutral wire via the small focus working indicator light.

[0029] The input terminal of the examination bed I selection relay is electrically connected to the fourth fuse. The first output terminal of the examination bed I selection relay is electrically connected to one end of the seventh resistor via the examination bed I fluoroscopic exposure relay. The second output terminal of the examination bed I selection relay is electrically connected to one end of the eighth resistor via the examination bed I spot film photography exposure relay.

[0030] In one possible design, the rotating anode drive and brake control module includes a fifth fuse, a first rotating anode motor drive unit, a second rotating anode motor drive unit, a brake control unit, and a rotating anode status indicator unit.

[0031] The live wire is electrically connected to a common terminal of one end of the first rotating anode motor drive unit, one end of the second rotating anode motor drive unit, one end of the brake control unit, and one end of the rotating anode status indicator unit after passing through the fifth fuse. The neutral wire is electrically connected to a common terminal of the other end of the first rotating anode motor drive unit, the other end of the second rotating anode motor drive unit, the other end of the brake control unit, and the other end of the rotating anode status indicator unit.

[0032] The first rotating anode motor drive unit and the second rotating anode motor drive unit serve as the rotating anode drive and brake control signal output terminals of the rotating anode drive and brake control module, and are mutually inductively coupled to the X-ray tube delay protection control module.

[0033] In one possible design, the tube voltage regulation and exposure control module includes a high-voltage primary unit and a high-voltage secondary unit;

[0034] The high-voltage primary unit serves as the power supply input terminal of the tube voltage regulation and exposure control module and is electrically connected to the power supply output terminal of the power input module. The high-voltage secondary unit serves as the tube current regulation controlled terminal of the tube voltage regulation and exposure control module and is inductively coupled to the tube current regulation control module. The high-voltage primary unit and the high-voltage secondary unit are connected through mutual inductive coupling.

[0035] The high-voltage primary unit includes an exposure in progress indicator light.

[0036] Beneficial Effects: This utility model provides a demonstration circuit for the protection and control of the rotating anode X-ray tube in a dual-tube X-ray machine, including: a power input module, a session selection and high-voltage switching control module, an exposure mode control module, a tube current adjustment control module, a rotating anode drive and brake control module, an X-ray tube delay protection control module, and a tube voltage adjustment and exposure control module; wherein, the power supply output terminal of the power input module is electrically connected to the power supply input terminals of the session selection and high-voltage switching control module, the exposure mode control module, the tube current adjustment control module, the rotating anode drive and brake control module, the X-ray tube delay protection control module, and the tube voltage adjustment and exposure control module respectively; the control signal output terminal of the session selection and high-voltage switching control module is electrically connected to... The exposure mode control module, the tube current adjustment control module, the rotating anode drive and brake control module, and the tube voltage adjustment and exposure control module are all defined. The control signal output terminal of the exposure mode control module is electrically connected to the tube current adjustment control module, the rotating anode drive and brake control module, and the tube voltage adjustment and exposure control module, respectively. The control signal output terminal of the tube current adjustment control module is electrically connected to the X-ray tube delay protection control module and the tube voltage adjustment and exposure control module, respectively. The control signal output terminal of the rotating anode drive and brake control module is electrically connected to the X-ray tube delay protection control module, and the control signal output terminal of the X-ray tube delay protection control module is electrically connected to the tube voltage adjustment and exposure control module. Through the design and coordination of various module circuits, an experimental circuit for demonstrating the protection control of the rotating anode X-ray tube in a dual-tube X-ray machine was formed. This allows students to intuitively see the switching of the X-ray machine's working modes, the control logic relationships between various modules, and the real-time working status of each module during X-ray machine teaching, greatly improving the teaching effect and reducing the teaching difficulty. In addition, the design of the X-ray tube delay protection control module makes up for the missing parts in the X-ray machine teaching process, making the overall teaching process more complete and clearer. Attached Figure Description

[0037] Figure 1 This is a schematic diagram showing the connection of the functional modules of a demonstration circuit for the protection and control of the rotating anode X-ray tube in a dual-tube X-ray machine according to Embodiment 1 of this utility model;

[0038] Figure 2 This is a circuit diagram of the power input module in Embodiment 2 of this utility model;

[0039] Figure 3 This is a circuit diagram of the stage selection and high-voltage switching gate control module in Embodiment 2 of this utility model;

[0040] Figure 4 This is a circuit diagram of the exposure mode control module in Embodiment 2 of this utility model;

[0041] Figure 5 This is a circuit diagram of the tube current regulation and control module in Embodiment 2 of this utility model;

[0042] Figure 6 This is a circuit diagram of the rotating anode drive and brake control module in Embodiment 2 of this utility model;

[0043] Figure 7 This is a circuit diagram of the X-ray tube delay protection control module in Embodiment 2 of this utility model;

[0044] Figure 8 This is a circuit diagram of the tube voltage regulation and exposure control module in Embodiment 2 of this utility model.

[0045] In the diagram, 1. Power input module; 2. Screen selection and high-voltage switching control module; 3. Exposure mode control module; 4. Tube current regulation control module; 5. Rotating anode drive and brake control module; 6. X-ray tube delay protection control module; 7. Tube voltage regulation and exposure control module.

[0046] R1, First resistor; R2, Second resistor; R3, Third resistor; R4, Fourth resistor; R5, Fifth resistor; R6, Sixth resistor; R7, Seventh resistor; R8, Eighth resistor; R9, Ninth resistor; R10, Tenth resistor; R11, Eleventh resistor; R12, Twelfth resistor; R13, Thirteenth resistor; R14, Fourteenth resistor; R15, Fifteenth resistor; R16, Sixteenth resistor; R17, Seventeenth resistor; R18, Eighteenth resistor; R19, Nineteenth resistor; R20, Twentieth resistor; R21, Twenty-first resistor; R22, Twenty-second resistor; R23, Twenty-third resistor; R24, Twenty-fourth resistor; R25, Twenty-fifth resistor; R26, Twenty-sixth resistor; B1, First transformer; B2, First current transformer; B3, Small focal filament transformer; B4, Large focal filament transformer; B5, First voltage transformer; Current transformer; B6, second current transformer; B7, second transformer; C1, first capacitor; C2, second capacitor; C3, third capacitor; C4, fourth capacitor; C5, fifth capacitor; C6, sixth capacitor; C7, seventh capacitor; D1, first diode; D2, second diode; D3, third diode; D4, fourth diode; D5, fifth diode; D6, sixth diode; D7, seventh diode; D8, eighth diode; D9, ninth diode; D10, tenth diode; D11, eleventh diode; D12, twelfth diode; D13, thirteenth diode; RD1, first fuse; RD2, second fuse; RD3, third fuse; RD4, fourth fuse; RD5, fifth fuse; RD6, sixth fuse; RD7, seventh fuse; ZD1, first Zener diode; ZD2, second Zener diode;

[0047] LED1, Power Indicator; LED2, Stage I Selection Indicator; LED3, Stage II Selection Indicator; LED4, Fluoroscopy Indicator; LED5, Spot Film Indicator; LED6, Photography Indicator; LED7, Small Focus Working Indicator; LED8, Large Focus Working Indicator; LED9, Fluoroscopy Rotation Prohibition Mode Indicator; LED10, Spot Film and Photography Rotation Allowed Mode Indicator; LED11, Delay Ready Indicator; LED12, Exposure in Progress Indicator; JCIA, Examination Bed Stage I Selection Relay; JCIIA, Photography Bed Stage II Selection Relay; JC1, Examination Bed Stage I Fluoroscopy Exposure Relay; JC2, Examination Bed Stage I Spot Film and Photography Exposure Relay; JC3, Photography Bed Stage II Photography Exposure Relay; JC4, Power-off delay relay; JC5, Delay protection relay; XK1-100, First three-throw switch; XK1-200, Second three-throw switch; XK1-300, Third three-throw switch; XK1-400, Fourth three-throw switch; RW1, Fluorescence tube current adjustment potentiometer; RW2, Delay time adjustment potentiometer; RW3, Tube voltage adjustment potentiometer; XGI, I X-ray tube; XGII, II X-ray tube; T1, First switching transistor; T2, Second switching transistor; M1, First cyclone motor; M2, Second cyclone motor; GQI, First high-voltage switching gate; GQII, Second high-voltage switching gate; S1, Power switch; S2, I exposure mode selection switch; P1, Three-hole single-phase power socket; BG1, Rectifier bridge; RV1, Protective varistor. Detailed Implementation

[0048] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is used to help understand this utility model, but does not constitute a limitation on this utility model.

[0049] It should be understood that although the terms first, second, etc., may be used herein to describe various modules, these modules should not be limited by these terms. These terms are only used to distinguish one module from another. For example, a first module may be referred to as a second module, and similarly, a second module may be referred to as a first module, without departing from the scope of the exemplary embodiments of this utility model.

[0050] It should be understood that the term "and / or" that may appear in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist simultaneously. The term " / and" that may appear in this document describes another relationship between related objects, indicating that two relationships can exist. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " that may appear in this document generally indicates that the related objects before and after it are in an "or" relationship.

[0051] Example 1:

[0052] like Figure 1 As shown, this embodiment provides a demonstration circuit for the protection and control of the rotating anode X-ray tube of a dual-tube X-ray machine, including: a power input module 1, a station selection and high-voltage switching control module 2, an exposure mode control module 3, a tube current adjustment control module 4, a rotating anode drive and brake control module 5, an X-ray tube delay protection control module 6, and a tube voltage adjustment and exposure control module 7.

[0053] The power supply output terminal of the power input module 1 is electrically connected to the power supply input terminals of the following modules: the stage selection and high voltage switching control module 2, the exposure mode control module 3, the tube current adjustment control module 4, the rotating anode drive and brake control module 5, the X-ray tube delay protection control module 6, and the tube voltage adjustment and exposure control module 7.

[0054] The control signal output terminals of the stage selection and high-voltage switching control module 2 are electrically connected to the exposure mode control module 3, the tube current adjustment control module 4, the rotating anode drive and brake control module 5, and the tube voltage adjustment and exposure control module 7, respectively. The control signal output terminals of the exposure mode control module 3 are electrically connected to the tube current adjustment control module 4, the rotating anode drive and brake control module 5, and the tube voltage adjustment and exposure control module 7, respectively. The control signal output terminals of the tube current adjustment control module 4 are electrically connected to the X-ray tube delay protection control module 6 and the tube voltage adjustment and exposure control module 7, respectively. The control signal output terminals of the rotating anode drive and brake control module 5 are electrically connected to the X-ray tube delay protection control module 6, and the control signal output terminals of the X-ray tube delay protection control module 6 are electrically connected to the tube voltage adjustment and exposure control module 7.

[0055] It should be noted that the demonstration circuit in this embodiment fills the teaching gap caused by the inability to use the physical machine for teaching medical X-ray machines. It not only presents the various functional modules of the physical machine in the form of a demonstration circuit, but also supplements the X-ray tube delay protection control module 6, which cannot be demonstrated in current teaching. Through the coordinated operation of the various modules of the demonstration circuit in this embodiment, the complete workflow of the X-ray machine is clearly demonstrated. Students can intuitively see the switching of the X-ray machine's working modes, the control logic relationships between functional circuits, and the working status of each functional circuit. This makes the abstract teaching process concrete, making it easier for students to understand, greatly improving the teaching effectiveness of X-ray machine instruction, and reducing the teaching difficulty.

[0056] Example 2:

[0057] like Figure 2-8 As shown, this embodiment provides a possible implementation in which the power input module 1 includes a three-hole single-phase power socket, a power switch, a first fuse, a protective varistor, a first resistor, a power indicator light, and a first transformer.

[0058] The three-hole single-phase power socket has its input terminal connected to AC power. Its neutral wire terminal is electrically connected to the first input terminal of the power switch. Its ground wire terminal is electrically connected to the second input terminal of the power switch. Its live wire terminal is electrically connected to the third input terminal of the power switch. The first output terminal of the power switch is electrically connected to the common terminal of the protective varistor, the first resistor, and the first transformer via the first fuse. The other end of the first resistor is electrically connected to one end of the power indicator light. The second output terminal of the power switch is electrically connected to the common terminal of the power indicator light, the protective varistor, and the first transformer.

[0059] The common terminal of the protective varistor, the first resistor, and the first transformer serves as the live wire terminal, and the common terminal of the power indicator light, the protective varistor, and the first transformer serves as the neutral wire terminal. The live wire terminal and the neutral wire terminal serve as the first power supply output terminal, which is electrically connected to the power supply input terminals of the stage selection and high voltage switching control module 2, the exposure mode control module 3, the tube current adjustment control module 4, the rotating anode drive and brake control module 5, and the tube voltage adjustment and exposure control module 7. The secondary side of the first transformer serves as the second power supply output terminal, which is electrically connected to the power supply input terminal of the X-ray tube delay protection control module 6.

[0060] In one possible implementation, the session selection and high-voltage switching control module 2 includes a second fuse, a session switching unit for examination bed I, a session switching unit for radiography bed II, a session switching indicator unit, and a high-voltage switching unit.

[0061] The live wire is electrically connected to one end of the on / off unit of the examination bed I, one end of the on / off unit of the radiography bed II, one end of the on / off unit of the on / off unit, and one end of the high-voltage switching unit after passing through the second fuse. The neutral wire is electrically connected to the other end of the on / off unit of the examination bed I, the other end of the on / off unit of the radiography bed II, the other end of the on / off unit of the on / off unit, and the other end of the high-voltage switching unit.

[0062] The on / off unit of the examination bed I serves as the first selection signal output terminal of the selection and high-voltage switching control module 2, and is electrically connected to the exposure mode control module 3, the tube current adjustment control module 4, and the rotating anode drive and brake control module 5, respectively. The on / off unit of the radiography bed II serves as the second selection signal output terminal of the selection and high-voltage switching control module 2, and is electrically connected to the exposure mode control module 3, the tube current adjustment control module 4, and the rotating anode drive and brake control module 5, respectively. The high-voltage switching unit serves as the switching signal output terminal of the selection and high-voltage switching control module 2, and is electrically connected to the tube voltage adjustment and exposure control module 7.

[0063] In one possible implementation, the station switching indicator unit includes a second resistor, a third resistor, a station I selection indicator light, a station II selection indicator light, a station I selection relay for the examination bed, and a station II selection relay for the radiography bed;

[0064] Wherein, one end of the second resistor serves as the input terminal of the electrical connection session switching indicator unit, and is electrically connected to the second fuse through the examination bed I session selection relay; the other end of the second resistor is electrically connected to one end of the I session selection indicator light; and the other end of the I session selection indicator light serves as the output terminal of the electrical connection session switching indicator unit and is electrically connected to the neutral wire terminal.

[0065] One end of the third resistor serves as the input terminal of the electrical connection stage switching indicator unit, and is electrically connected to the second fuse through the radiography bed II stage selection relay. The other end of the third resistor is then electrically connected to one end of the II stage selection indicator light, and the other end of the II stage selection indicator light serves as the output terminal of the electrical connection stage switching indicator unit, and is electrically connected to the neutral wire terminal.

[0066] In one possible implementation, the exposure mode control module 3 includes a third fuse, a perspective exposure control unit, a spot photography exposure preparation control unit, a photography exposure preparation control unit, and an exposure mode indication unit.

[0067] The live wire is electrically connected to one end of the perspective exposure control unit, one end of the spot photography exposure preparation control unit, one end of the photography exposure preparation control unit, and one end of the exposure mode indicator unit via the third fuse. The neutral wire is electrically connected to the other end of the perspective exposure control unit, the other end of the spot photography exposure preparation control unit, the other end of the photography exposure preparation control unit, and the other end of the exposure mode indicator unit.

[0068] The perspective exposure control unit serves as the first exposure control terminal of the exposure mode control module 3, and is electrically connected to the tube current adjustment control module 4, the rotating anode drive and brake control module 5, and the tube voltage adjustment and exposure control module 7. The spot photography exposure preparation control unit serves as the second exposure mode control terminal of the exposure mode control module 3, and is electrically connected to the tube current adjustment control module 4, the rotating anode drive and brake control module 5, and the tube voltage adjustment and exposure control module 7. The photography exposure preparation control unit serves as the third exposure control terminal of the exposure mode control module 3, and is electrically connected to the tube current adjustment control module 4, the rotating anode drive and brake control module 5, and the tube voltage adjustment and exposure control module 7.

[0069] In one possible implementation, the exposure mode indication unit includes a fourth resistor, a fifth resistor, a sixth resistor, a fluoroscopy indicator light, a spot film indicator light, a photography indicator light, a fluoroscopy exposure relay for examination bed I, a spot film photography exposure relay for examination bed I, and a photography exposure relay for photography bed II.

[0070] The common terminal of the fluoroscopy exposure relay for examination bed I, the spot radiography exposure relay for examination bed I, and the radiography exposure relay for radiography bed II is electrically connected to the third fuse. The fluoroscopy exposure relay for examination bed I is electrically connected to one end of the fluoroscopy indicator light through the fourth resistor. The spot radiography exposure relay for examination bed I is electrically connected to one end of the spot radiography indicator light through the fifth resistor. The radiography exposure relay for radiography bed II is electrically connected to one end of the radiography indicator light through the sixth resistor. The common terminal of the fluoroscopy indicator light, the spot radiography indicator light, and the radiography indicator light is electrically connected to the neutral wire terminal.

[0071] In one possible implementation, the tube current regulation control module 4 includes a fourth fuse, a first current transformer, a fluoroscopy tube current regulation unit, a spot imaging tube current regulation unit, an imaging tube current regulation unit, and a large and small focus filament working indicator unit.

[0072] The live wire is electrically connected to a common terminal of one end of the first current transformer and one end of the large and small focus filament working indicator unit after passing through the fourth fuse. The other end of the first current transformer is electrically connected to a common terminal of one end of the fluoroscopy tube current adjustment unit, one end of the spot film imaging tube current adjustment unit, and one end of the imaging tube current adjustment unit. The neutral wire is electrically connected to a common terminal of the other end of the fluoroscopy tube current adjustment unit, the other end of the spot film imaging tube current adjustment unit, the other end of the imaging tube current adjustment unit, and the other end of the large and small focus filament working indicator unit.

[0073] The first current transformer serves as the first current regulation signal output terminal of the tube current regulation control module 4 and is inductively coupled to the X-ray tube delay protection control module 6. The fluoroscopy tube current regulation unit, the spot radiography tube current regulation unit, and the radiography tube current regulation unit serve as the second current regulation signal output terminals of the tube current regulation control module 4 and are inductively coupled to the tube voltage regulation and exposure control module 7.

[0074] In one possible implementation, the large and small focus filament working indicator unit includes a first three-throw switch, a second three-throw switch, a seventh resistor, an eighth resistor, a small focus working indicator light, a large focus working indicator light, a selection relay for examination bed I, a selection relay for radiography bed II, a fluoroscopy exposure relay for examination bed I, a spot radiography exposure relay for examination bed I, and a radiography exposure relay for radiography bed II.

[0075] The moving contact of the first three-throw switch is electrically connected to the fourth fuse, and the stationary contact of the first three-throw switch is electrically connected to the stationary contact of the second three-throw switch. The first and second moving contacts of the second three-throw switch are electrically connected to one end of the eighth resistor via the camera bed II selection relay and the camera bed II exposure relay. The other end of the eighth resistor is electrically connected to the neutral wire via the large focus working indicator light. The third moving contact of the second three-throw switch is electrically connected to one end of the seventh resistor via the camera bed II selection relay and the camera bed II exposure relay. The other end of the seventh resistor is electrically connected to the neutral wire via the small focus working indicator light.

[0076] The input terminal of the examination bed I selection relay is electrically connected to the fourth fuse. The first output terminal of the examination bed I selection relay is electrically connected to one end of the seventh resistor via the examination bed I fluoroscopic exposure relay. The second output terminal of the examination bed I selection relay is electrically connected to one end of the eighth resistor via the examination bed I spot film photography exposure relay.

[0077] In one possible implementation, the rotating anode drive and brake control module 5 includes a fifth fuse, a first rotating anode motor drive unit, a second rotating anode motor drive unit, a brake control unit, and a rotating anode status indicator unit.

[0078] The live wire is electrically connected to a common terminal of one end of the first rotating anode motor drive unit, one end of the second rotating anode motor drive unit, one end of the brake control unit, and one end of the rotating anode status indicator unit after passing through the fifth fuse. The neutral wire is electrically connected to a common terminal of the other end of the first rotating anode motor drive unit, the other end of the second rotating anode motor drive unit, the other end of the brake control unit, and the other end of the rotating anode status indicator unit.

[0079] The first rotating anode motor drive unit and the second rotating anode motor drive unit serve as the rotating anode drive and brake control signal output terminals of the rotating anode drive and brake control module 5, and are inductively coupled to the X-ray tube delay protection control module 6.

[0080] In one possible implementation, the tube voltage regulation and exposure control module 7 includes a high-voltage primary unit and a high-voltage secondary unit;

[0081] The high-voltage primary unit serves as the power supply input terminal of the tube voltage regulation and exposure control module 7 and is electrically connected to the power supply output terminal of the power input module 1. The high-voltage secondary unit serves as the tube current regulation controlled terminal of the tube voltage regulation and exposure control module 7 and is inductively coupled to the tube current regulation control module 4. The high-voltage primary unit and the high-voltage secondary unit are connected through mutual inductive coupling.

[0082] The high-voltage primary unit includes an exposure in progress indicator light.

[0083] It should be noted that the demonstration circuits implemented by the various modules and their constituent electronic components in this embodiment do not constitute a complete control path. Therefore, in actual implementation, further modifications are required. Figures 2-8 The participation of the remaining electronic components shown constitutes the circuit implementation for the specific demonstration function.

[0084] Specifically, taking perspective exposure as an example, the demonstration circuit of this embodiment starts working by turning on the power switch S1, and the power input module 1 starts working and supplies power to the other modules.

[0085] When the power-on button AN1 for the first examination bed is pressed, the 220V power supply is grounded via the second fuse RD2, the coil of the selection relay JCIA for the first examination bed, buttons AN1 and AN2, and the contact of the selection relay JCIIA-2 for the second radiography bed. The coil of the selection relay JCIA for the first examination bed is energized. Upon releasing button AN1, the coil of the selection relay JCIA-1 closes, creating a self-locking mechanism. All contacts controlled by the selection relay JCIA for the first examination bed (contacts JCIA-1 to JCIA-10) change their initial state. Because the selection relay JCIA-2 contact of the first examination bed forms an electrical interlock with the selection relay JCIIA for the second radiography bed, the second radiography bed cannot be powered on at this time. Because the JCIA-3 contact of the I-bed selection relay is closed, the I-bed selection indicator LED2 is energized and illuminated, indicating that I-bed has been successfully selected and powered on. The coil of the first high-voltage switching switch GQI is energized by the closure of the JCIA-4 contact of the I-bed selection relay, and the four normally open contacts of the first high-voltage switching switch GQI (first high-voltage switching switch GQI-1 contact - first high-voltage switching switch GQI-4 contact) close, connecting the high-voltage anode power supply channel and the large and small focal point filament power supply channel for the I-bed X-ray tube XGI. Pressing the I-bed power-off button AN2 at any time after I-bed is powered on will put the X-ray machine in a standby power-on state.

[0086] In the exposure mode control module 3, the exposure mode selection switch S2 for unit I is set to contact S2-23, indicating that the fluoroscopic exposure mode for unit I is selected. At this time, pressing the fluoroscopic exposure button AN5 connects the 220V supply to ground via the third fuse RD3, the coil of the fluoroscopic exposure relay JC1 for unit I, button AN5, contact S2-23 of the exposure mode selection switch for unit I, contact JCIA-5 of the selection relay for unit I, and contact JCIIA-6 of the selection relay for unit II. The coil of the fluoroscopic exposure relay JC1 for unit I is energized, and all contacts controlled by the fluoroscopic exposure relay JC1 for unit I (contacts JC1-1 to JC1-5) change their initial states. Because the fluoroscopic exposure relay JC1-1 for unit I is closed, the fluoroscopic indicator LED4 is energized and illuminates, indicating that unit I is operating in fluoroscopic exposure mode. To perform perspective exposure, you need to continuously press button AN5. If you release button AN5, the perspective exposure will end.

[0087] In the tube current adjustment control module 4, because the contact of the fluoroscopy exposure relay JC1-3 for the first examination bed is closed, the 220V power supply is grounded after passing through the fourth fuse RD4, the first current transformer B2-1 side, the small focal point filament transformer B3-1 side, the contact of the fluoroscopy exposure relay JC1-3 for the first examination bed, the fluoroscopy tube current adjustment potentiometer RW1, and the thirteenth resistor R13. Adjusting the fluoroscopy tube current adjustment potentiometer RW1 can adjust the magnitude of the fluoroscopy tube current. Also, because the contact of the fluoroscopy exposure relay JC1-2 for the first examination bed is closed, the 220V power supply is grounded after passing through the fourth fuse RD4, the contact of the selection relay JCIA-7 for the first examination bed, the contact of the fluoroscopy exposure relay JC1-2 for the first examination bed, the seventh resistor R7, and the small focal point working indicator LED7. The small focal point working indicator LED7 is energized and illuminates, indicating that the small focal point filament is working during fluoroscopy exposure.

[0088] In the rotating anode drive and brake control module 5, although the contacts of the examination bed I selection relay JCIA-9 and examination bed I selection relay JCIA-10 on the power supply path of the first rotating anode motor M1 will close, the first rotating anode motor M1 cannot be energized and will not operate during fluoroscopic exposure mode because the contacts of the examination bed I spot radiography exposure relay JC2-5 and the radiography exposure relay JC3-6 of the radiography bed II will not close. Therefore, the rotating anode motor M1 is prohibited from rotating during fluoroscopic exposure mode. Because the contact of the examination bed I fluoroscopic exposure relay JC1-4 is closed, 220V is grounded through the fifth fuse RD5, the contact of the examination bed I fluoroscopic exposure relay JC1-4, the fourteenth resistor R14, and the rotating anode prohibited operation mode indicator LED9 during fluoroscopic exposure, thus illuminating the rotating anode prohibited operation mode indicator LED9 during fluoroscopic exposure mode. This illumination indicates that the first rotating anode motor M1 is in a prohibited operation state during fluoroscopic exposure mode.

[0089] In the X-ray tube delay protection control module 6, 22V DC power is applied to the anodes of the fifth diode D5 and the sixth diode D6 after passing through the nineteenth resistor R19. Since the first rotating anode motor M1 in the rotating anode drive and brake control module 5 is not working, there is no induction on the first voltage transformer B5-2 side and the second current transformer B6-2 side, resulting in a cathode voltage of 0V. The fifth diode D5 and the sixth diode D6 are saturated and conducting, therefore the sixth capacitor C6 does not charge. Consequently, both the first switching transistor T1 and the second switching transistor T2 are not conducting, and the delay protection relay JC5 cannot be energized, and its controlled contacts do not change their initial state. Because the delay protection relay JC5-1 contact is open, the delay preparation indicator LED11 is not lit, indicating that the X-ray tube delay protection control module 6 is operating in the exposure prohibition protection state during fluoroscopy exposure.

[0090] In the tube voltage regulation and exposure control module 7, because the first high-voltage switching gate GQI in the selection and high-voltage switching gate control module 2 has controlled all its contacts to close, the working operation of the fluoroscopy exposure relay JC1 for the first X-ray tube I in the exposure mode control module 3 controls the closure of the contacts of the fluoroscopy exposure relay JC1-5 for the first X-ray tube I in the exposure mode control module 3, and mutual inductance is generated on the side of the small focal filament transformer B3-2 after the small focal filament transformer B3 in the tube current regulation control module 4 is working. Therefore, as long as the fluoroscopy exposure button AN5 in the exposure mode control module 3 is pressed, 220V AC power will pass through the seventh fuse RD7, the contacts of the fluoroscopy exposure relay JC1-5 for the first X-ray tube I in the exposure mode control module 3, the tube voltage regulation potentiometer RW3, and the primary coil of the second transformer B7 to ground. The anode high voltage generated by the secondary coil of the second transformer B7 is applied to the X-ray tube XGI, and the fluoroscopy exposure immediately begins. At the instant the contacts of the fluoroscopy exposure relay JC1-5 for the first X-ray tube I in the exposure mode close, the exposure in progress indicator LED12 immediately lights up to indicate that the exposure is in progress. During fluoroscopic exposure, the fluoroscopic tube current can be adjusted by adjusting the fluoroscopic tube current adjustment potentiometer RW1 in the tube current adjustment control module 4, and the fluoroscopic tube voltage can be adjusted by adjusting the tube voltage adjustment potentiometer RW3 in the tube voltage adjustment and exposure control module 7. During fluoroscopic exposure, button AN5 must be continuously pressed. If button AN5 is released, LED12 will turn off, indicating that the fluoroscopic exposure is complete.

[0091] When selecting the fluoroscopic exposure mode, the fluoroscopic exposure is performed on the I examination bed. During fluoroscopic exposure, the small focal filament in the tube current adjustment control module 4 is working, and the first rotating anode motor M1 in the rotating anode drive and brake control module 5 is disabled. Therefore, the working mode of the X-ray machine during fluoroscopic exposure is: the small focal filament in the tube current adjustment control module 4 is working to create an image, the rotating anode motor in the rotating anode drive and brake control module 5 is disabled, and the X-ray tube delay protection control module 6 is in the exposure prohibition protection state during fluoroscopic exposure.

[0092] Correspondingly, when the spot radiography exposure mode is selected, the spot radiography exposure is performed on the I examination bed. During the spot radiography exposure, the large focal filament in the tube current adjustment control module 4 works to form an image, and the rotating anode motor in the rotating anode drive and brake control module 5 starts and stops in a timely manner. In addition, the X-ray tube delay protection control module 6 works in the delay exposure protection state during the spot radiography exposure.

[0093] When selecting the radiographic exposure mode, the radiographic exposure is performed on the II radiographic bed. During the radiographic exposure, the X-ray machine has two working modes: (1) The small focal filament in the tube current adjustment control module 4 works for imaging, and the rotating anode motor in the rotating anode drive and brake control module 5 starts and stops in a timely manner; (2) The large focal filament in the tube current adjustment control module 4 works for imaging, and the rotating anode motor starts and stops in a timely manner. During the radiographic exposure, the X-ray tube delay protection control module 6 works in the delayed exposure protection state.

[0094] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A demonstration circuit for protection and control of the rotating anode X-ray tube in a dual-tube X-ray machine, characterized in that, include: Power input module, X-ray tube selection and high voltage switching control module, exposure mode control module, tube current regulation control module, rotating anode drive and brake control module, X-ray tube delay protection control module and tube voltage regulation and exposure control module; The power supply output terminal of the power input module is electrically connected to the power supply input terminals of the stage selection and high voltage switching control module, the exposure mode control module, the tube current adjustment control module, the rotating anode drive and brake control module, the X-ray tube delay protection control module, and the tube voltage adjustment and exposure control module, respectively. The control signal output terminals of the stage selection and high-voltage switching control module are electrically connected to the exposure mode control module, the tube current regulation control module, the rotating anode drive and brake control module, and the tube voltage regulation and exposure control module, respectively. The control signal output terminals of the exposure mode control module are electrically connected to the tube current regulation control module, the rotating anode drive and brake control module, and the tube voltage regulation and exposure control module, respectively. The control signal output terminals of the tube current regulation control module are electrically connected to the X-ray tube delay protection control module and the tube voltage regulation and exposure control module, respectively. The control signal output terminal of the rotating anode drive and brake control module is electrically connected to the X-ray tube delay protection control module, and the control signal output terminal of the X-ray tube delay protection control module is electrically connected to the tube voltage regulation and exposure control module.

2. The demonstration circuit for protection and control of the rotating anode X-ray tube in a dual-tube X-ray machine according to claim 1, characterized in that, The power input module includes a three-hole single-phase power socket, a power switch, a first fuse, a protective varistor, a first resistor, a power indicator light, and a first transformer. The three-hole single-phase power socket has its input terminal connected to AC power. Its neutral wire terminal is electrically connected to the first input terminal of the power switch. Its ground wire terminal is electrically connected to the second input terminal of the power switch. Its live wire terminal is electrically connected to the third input terminal of the power switch. The first output terminal of the power switch is electrically connected to the common terminal of the protective varistor, the first resistor, and the first transformer via the first fuse. The other end of the first resistor is electrically connected to one end of the power indicator light. The second output terminal of the power switch is electrically connected to the common terminal of the power indicator light, the protective varistor, and the first transformer. The common terminal of the protective varistor, the first resistor, and the first transformer serves as the live wire terminal, and the common terminal of the power indicator light, the protective varistor, and the first transformer serves as the neutral wire terminal. The live wire terminal and the neutral wire terminal serve as the first power supply output terminal, which is electrically connected to the power supply input terminals of the stage selection and high-voltage switching control module, the exposure mode control module, the tube current adjustment control module, the rotating anode drive and braking control module, and the tube voltage adjustment and exposure control module. The secondary side of the first transformer serves as the second power supply output terminal, which is electrically connected to the power supply input terminal of the X-ray tube delay protection control module.

3. The demonstration circuit for protection and control of the rotating anode X-ray tube in a dual-tube X-ray machine according to claim 2, characterized in that, The unit selection and high-voltage switching control module includes a second fuse, a unit switching unit for examination bed I, a unit switching unit for radiography bed II, a unit switching indicator unit, and a high-voltage switching unit. The live wire is electrically connected to one end of the on / off unit of the examination bed I, one end of the on / off unit of the radiography bed II, one end of the on / off unit of the on / off unit, and one end of the high-voltage switching unit after passing through the second fuse. The neutral wire is electrically connected to the other end of the on / off unit of the examination bed I, the other end of the on / off unit of the radiography bed II, the other end of the on / off unit of the on / off unit, and the other end of the high-voltage switching unit. The on / off unit of the examination bed I serves as the first selection signal output terminal of the selection and high-voltage switching control module, and is electrically connected to the exposure mode control module, the tube current adjustment control module, and the rotating anode drive and brake control module, respectively. The on / off unit of the radiography bed II serves as the second selection signal output terminal of the selection and high-voltage switching control module, and is electrically connected to the exposure mode control module, the tube current adjustment control module, and the rotating anode drive and brake control module, respectively. The high-voltage switching unit serves as the switching signal output terminal of the selection and high-voltage switching control module, and is electrically connected to the tube voltage adjustment and exposure control module.

4. The demonstration circuit for protection and control of the rotating anode X-ray tube in a dual-tube X-ray machine according to claim 3, characterized in that, The unit for switching between beds includes a second resistor, a third resistor, a first-bed selection indicator light, a second-bed selection indicator light, a first-bed selection relay for the examination bed, and a second-bed selection relay for the radiography bed; Wherein, one end of the second resistor serves as the input terminal of the electrical connection session switching indicator unit, and is electrically connected to the second fuse through the examination bed I session selection relay; the other end of the second resistor is electrically connected to one end of the I session selection indicator light; and the other end of the I session selection indicator light serves as the output terminal of the electrical connection session switching indicator unit and is electrically connected to the neutral wire terminal. One end of the third resistor serves as the input terminal of the electrical connection stage switching indicator unit, and is electrically connected to the second fuse through the radiography bed II stage selection relay. The other end of the third resistor is then electrically connected to one end of the II stage selection indicator light, and the other end of the II stage selection indicator light serves as the output terminal of the electrical connection stage switching indicator unit, and is electrically connected to the neutral wire terminal.

5. The demonstration circuit for protection and control of the rotating anode X-ray tube in a dual-tube X-ray machine according to claim 2, characterized in that, The exposure mode control module includes a third fuse, a perspective exposure control unit, a spot photography exposure preparation control unit, a photography exposure preparation control unit, and an exposure mode indicator unit; The live wire is electrically connected to one end of the perspective exposure control unit, one end of the spot photography exposure preparation control unit, one end of the photography exposure preparation control unit, and one end of the exposure mode indicator unit via the third fuse. The neutral wire is electrically connected to the other end of the perspective exposure control unit, the other end of the spot photography exposure preparation control unit, the other end of the photography exposure preparation control unit, and the other end of the exposure mode indicator unit. The perspective exposure control unit serves as the first exposure control terminal of the exposure mode control module, and is electrically connected to the tube current adjustment control module, the rotating anode drive and brake control module, and the tube voltage adjustment and exposure control module. The spot photography exposure preparation control unit serves as the second exposure mode control terminal of the exposure mode control module, and is electrically connected to the tube current adjustment control module, the rotating anode drive and brake control module, and the tube voltage adjustment and exposure control module. The photography exposure preparation control unit serves as the third exposure control terminal of the exposure mode control module, and is electrically connected to the tube current adjustment control module, the rotating anode drive and brake control module, and the tube voltage adjustment and exposure control module.

6. The demonstration circuit for protection and control of the rotating anode X-ray tube in a dual-tube X-ray machine according to claim 5, characterized in that, The exposure mode indication unit includes a fourth resistor, a fifth resistor, a sixth resistor, a fluoroscopy indicator light, a spot film indicator light, a photography indicator light, a fluoroscopy exposure relay for examination bed I, a spot film photography exposure relay for examination bed I, and a photography exposure relay for photography bed II. The common terminal of the fluoroscopy exposure relay for examination bed I, the spot radiography exposure relay for examination bed I, and the radiography exposure relay for radiography bed II is electrically connected to the third fuse. The fluoroscopy exposure relay for examination bed I is electrically connected to one end of the fluoroscopy indicator light through the fourth resistor. The spot radiography exposure relay for examination bed I is electrically connected to one end of the spot radiography indicator light through the fifth resistor. The radiography exposure relay for radiography bed II is electrically connected to one end of the radiography indicator light through the sixth resistor. The common terminal of the fluoroscopy indicator light, the spot radiography indicator light, and the radiography indicator light is electrically connected to the neutral wire terminal.

7. The demonstration circuit for protection and control of the rotating anode X-ray tube in a dual-tube X-ray machine according to claim 2, characterized in that, The tube current regulation control module includes a fourth fuse, a first current transformer, a fluoroscopic tube current regulation unit, a spot imaging tube current regulation unit, an imaging tube current regulation unit, and a large and small focus filament working indicator unit. The live wire is electrically connected to a common terminal of one end of the first current transformer and one end of the large and small focus filament working indicator unit after passing through the fourth fuse. The other end of the first current transformer is electrically connected to a common terminal of one end of the fluoroscopy tube current adjustment unit, one end of the spot film imaging tube current adjustment unit, and one end of the imaging tube current adjustment unit. The neutral wire is electrically connected to a common terminal of the other end of the fluoroscopy tube current adjustment unit, the other end of the spot film imaging tube current adjustment unit, the other end of the imaging tube current adjustment unit, and the other end of the large and small focus filament working indicator unit. The first current transformer serves as the first current regulation signal output terminal of the tube current regulation control module and is inductively coupled to the X-ray tube delay protection control module. The fluoroscopy tube current regulation unit, the spot radiography tube current regulation unit, and the radiography tube current regulation unit serve as the second current regulation signal output terminals of the tube current regulation control module and are inductively coupled to the tube voltage regulation and exposure control module.

8. The demonstration circuit for protection and control of the rotating anode X-ray tube in a dual-tube X-ray machine according to claim 7, characterized in that, The large and small focal spot filament working indicator unit includes a first three-throw switch, a second three-throw switch, a seventh resistor, an eighth resistor, a small focal spot working indicator light, a large focal spot working indicator light, a selection relay for examination bed I, a selection relay for radiography bed II, a fluoroscopy exposure relay for examination bed I, a spot radiography exposure relay for examination bed I, and a radiography exposure relay for radiography bed II. The moving contact of the first three-throw switch is electrically connected to the fourth fuse, and the stationary contact of the first three-throw switch is electrically connected to the stationary contact of the second three-throw switch. The first and second moving contacts of the second three-throw switch are electrically connected to one end of the eighth resistor via the camera bed II selection relay and the camera bed II exposure relay. The other end of the eighth resistor is electrically connected to the neutral wire via the large focus working indicator light. The third moving contact of the second three-throw switch is electrically connected to one end of the seventh resistor via the camera bed II selection relay and the camera bed II exposure relay. The other end of the seventh resistor is electrically connected to the neutral wire via the small focus working indicator light. The input terminal of the examination bed I selection relay is electrically connected to the fourth fuse. The first output terminal of the examination bed I selection relay is electrically connected to one end of the seventh resistor via the examination bed I fluoroscopic exposure relay. The second output terminal of the examination bed I selection relay is electrically connected to one end of the eighth resistor via the examination bed I spot film photography exposure relay.

9. The demonstration circuit for protection and control of the rotating anode X-ray tube in a dual-tube X-ray machine according to claim 2, characterized in that, The rotating anode drive and brake control module includes a fifth fuse, a first rotating anode motor drive unit, a second rotating anode motor drive unit, a brake control unit, and a rotating anode status indicator unit. The live wire is electrically connected to a common terminal of one end of the first rotating anode motor drive unit, one end of the second rotating anode motor drive unit, one end of the brake control unit, and one end of the rotating anode status indicator unit after passing through the fifth fuse. The neutral wire is electrically connected to a common terminal of the other end of the first rotating anode motor drive unit, the other end of the second rotating anode motor drive unit, the other end of the brake control unit, and the other end of the rotating anode status indicator unit. The first rotating anode motor drive unit and the second rotating anode motor drive unit serve as the rotating anode drive and brake control signal output terminals of the rotating anode drive and brake control module, and are mutually inductively coupled to the X-ray tube delay protection control module.

10. The demonstration circuit for protection and control of the rotating anode X-ray tube in a dual-tube X-ray machine according to claim 1, characterized in that, The tube voltage regulation and exposure control module includes a high-voltage primary unit and a high-voltage secondary unit; The high-voltage primary unit serves as the power supply input terminal of the tube voltage regulation and exposure control module and is electrically connected to the power supply output terminal of the power input module. The high-voltage secondary unit serves as the tube current regulation controlled terminal of the tube voltage regulation and exposure control module and is inductively coupled to the tube current regulation control module. The high-voltage primary unit and the high-voltage secondary unit are connected through mutual inductive coupling. The high-voltage primary unit includes an exposure in progress indicator light.

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