CN116344297A - Bulb and control method thereof - Google Patents

Bulb and control method thereof Download PDF

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Publication number
CN116344297A
CN116344297A CN202310601548.0A CN202310601548A CN116344297A CN 116344297 A CN116344297 A CN 116344297A CN 202310601548 A CN202310601548 A CN 202310601548A CN 116344297 A CN116344297 A CN 116344297A
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CN
China
Prior art keywords
filament
bulb
tip
extraction electrode
electrode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310601548.0A
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Chinese (zh)
Inventor
朱中道
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Yimu Wanxiang Technology Co ltd
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Suzhou Yimu Wanxiang Technology Co ltd
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Application filed by Suzhou Yimu Wanxiang Technology Co ltd filed Critical Suzhou Yimu Wanxiang Technology Co ltd
Priority to CN202310601548.0A priority Critical patent/CN116344297A/en
Publication of CN116344297A publication Critical patent/CN116344297A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/40—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/44—Constructional features of apparatus for radiation diagnosis
    • A61B6/4429—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units
    • A61B6/4435—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units the source unit and the detector unit being coupled by a rigid structure
    • A61B6/4441—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units the source unit and the detector unit being coupled by a rigid structure the rigid structure being a C-arm or U-arm
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/025—X-ray tubes with structurally associated circuit elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
    • H01J35/08—Anodes; Anti cathodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/14—Arrangements for concentrating, focusing, or directing the cathode ray
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/16—Vessels; Containers; Shields associated therewith
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/24—Tubes wherein the point of impact of the cathode ray on the anode or anticathode is movable relative to the surface thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps

Abstract

The invention relates to the technical field of medical imaging, in particular to a bulb tube and a control method of the bulb tube, wherein the bulb tube comprises the following components: a housing; the filament is arranged on the shell and used for generating electrons; the power supply device is connected with the filament and is used for supplying electric energy to the filament so as to enable the filament to work to generate electrons; the anode target is arranged on the shell and corresponds to the tip of the filament and is used for receiving electrons generated by the tip of the filament; the extraction electrode is arranged between the tip of the filament and the anode target and is close to the tip of the filament, and the extraction electrode works at a first set voltage to form an extraction electric field at the tip of the filament, so that the electron escape quantity of the tip of the filament is increased, and the current between the tip of the filament and the anode target is increased.

Description

Bulb and control method thereof
Technical Field
The invention relates to the technical field of medical imaging, in particular to a bulb tube and a control method of the bulb tube.
Background
In the related art, the current formed by moving electrons escaping from the filament in the bulb tube to the anode target is called tube current, the tube current is influenced by the number of electrons escaping from the filament, at present, when the tube current is increased, the tube current is increased by increasing the temperature of the filament so as to increase the number of electrons escaping from the filament, and in this way, a long time is required to wait for the filament to increase the temperature so that the number of electrons escaping reaches a desired value, the tube current is excessively long until the number of electrons escaping from the filament reaches the value which needs to be increased, and the speed of the tube response tube current adjustment operation is slower.
Disclosure of Invention
In order to solve the technical problem that the bulb tube has a slow speed in response to the increase of the tube current when the electron escape quantity adjusted by the bulb tube reaches a desired value, a first object of the present invention is to provide a bulb tube.
The second object of the invention is to provide a method for controlling a bulb.
A third object of the present invention is to provide an operation control device for a bulb.
A fourth object of the present invention is to provide a bulb operation control assembly.
A fifth object of the present invention is to propose a readable storage medium.
In view of this, according to a first object of the present invention, a bulb according to the present invention comprises: a housing; the filament is arranged on the shell and used for generating electrons; the power supply device is connected with the filament and is used for supplying electric energy to the filament so as to enable the filament to work to generate electrons; an anode target arranged on the shell and corresponding to the tip of the filament; the extraction electrode is arranged between the tip of the filament and the anode target and is close to the tip of the filament, and the extraction electrode works at a first set voltage to form an extraction electric field at the tip of the filament, so that the electron escape quantity of the tip of the filament is increased, and the current between the tip of the filament and the anode target is increased.
The bulb tube provided by the invention comprises a shell, a filament, a power supply device, an anode target and an extraction electrode. The housing serves as a main structural member of the entire bulb for supporting other components. The filament is arranged on the shell and used for generating electrons.
The power supply device is a component acting on the filament and is connected with the filament for supplying electric energy to the filament. The filament works after being electrified, so that electrons escape to the outside. The anode target is arranged on the shell and corresponds to the tip of the filament, electrons escaping from the tip of the filament have a certain speed, and finally moving electrons can strike the target surface of the anode target due to the arrangement of the anode target and the tip of the filament, the movement of the electrons is prevented, and part of kinetic energy of the electrons can be converted into radiant energy so as to generate X rays.
The extraction electrode is arranged in the shell, is positioned between the tip of the filament and the anode target and is close to the tip of the filament. When the bulb tube works, the power supply device supplies electric energy to the filament, electrons outwards escape from the filament correspondingly, electrons escaping from the tip of the filament move towards the anode target, and current is generated between the tip of the filament and the anode target due to the movement of the electrons, and the current is tube current of the bulb tube.
When the value of the tube current needs to be increased, the extraction electrode can play a role in the adjustment process, wherein an operator can set the value of the first set voltage according to the value to which the tube current needs to be increased, namely the tube current set value, so that the extraction electrode works at the first set voltage. Specifically, in one aspect, the operator may set the value of the first set voltage directly after the calculation. On the other hand, the bulb tube further comprises an operation control component, and the operation control component is connected with the extraction electrode and used for controlling the extraction electrode to work at a first set voltage. Specifically, the operator inputs the tube current set point into the operation control assembly, and the operation control assembly can correspondingly determine the first set voltage according to the tube current set point and enable the extraction electrode to work at the first set voltage.
When the extraction electrode works at a first set voltage, the extraction electrode can be electrified and generate an extraction electric field with the intensity corresponding to the first set voltage, and as the extraction electrode is positioned at the tip of the filament, the extraction electric field can act on the tip of the filament, under the action of the extraction electric field, the process of electrons escaping from the tip of the filament can be assisted, so that electrons can escape from the tip of the filament more easily, the number of electrons escaping from the tip of the filament per second is increased, the value of the current between the tip of the filament and the anode target is correspondingly increased, and finally the tube current of the bulb is increased to a tube current set value.
The invention sets an extraction electrode for assisting electron escape, thus the electron escape quantity is not increased by only controlling the filament temperature, and the waiting time for reaching the expected electron escape quantity is reduced. And because the extraction electrode is an electrode element, the response of the extraction electrode to the voltage change is faster, so that after the specific value of the first set voltage is set, the extraction electrode can quickly change the current working voltage to the first set voltage, correspondingly form an extraction electric field with different field strengths, assist the tip of the filament to quickly release a large amount of electrons, realize the quick response adjustment requirement, reduce the time of adjusting the ball tube response electron release quantity, realize millisecond adjustment and improve the instantaneous response speed of the ball tube.
In addition, the bulb tube in the technical scheme provided by the invention can also have the following additional technical characteristics:
in any of the above technical schemes, an included angle a is formed between the target surface of the anode target and the axis of the filament, wherein a is more than or equal to 6 degrees and less than or equal to 18 degrees.
In the technical scheme, an included angle a is formed between the target surface of the anode target and the axis of the filament, wherein a is more than or equal to 6 degrees and less than or equal to 18 degrees. The target surface of the anode target is obliquely arranged relative to the filament, so that the actual focal surface can be increased, the heat capacity of the bulb tube is improved, the image quality is improved, and the image is clearer.
In any of the above technical solutions, the bulb further includes: and the anode of the high-voltage generating device is connected with the anode target.
In the technical scheme, the bulb tube further comprises a high-voltage generating device, the high-voltage generating device generates high-voltage electric energy and transmits the high-voltage electric energy to the anode target, a high-voltage electric field is generated between the anode target and the tip of the filament after the anode target obtains the high-voltage electric energy, the potential difference is instantaneously increased, electrons are accelerated and collide to the anode target under the driving of the high-voltage electric field, and energy conversion is generated after the electrons moving at high speed collide to the anode target, so that X-rays are generated.
In any of the above technical solutions, the bulb further includes: and a suppression electrode provided on the housing and located on the peripheral side of the filament, the suppression electrode being operated at a second set voltage to suppress electrons from escaping from a portion of the filament other than the tip.
In this technical scheme, the bulb still includes the suppression electrode, and the suppression electrode sets up in the casing, and is located the week side of filament, and specifically, the suppression electrode is the annular structure of middle trompil, is located the week side of filament through the trompil of middle seting up.
When the suppression electrode works at the second set voltage, the suppression electrode can generate a suppression electric field to control the escape direction of electrons, so that most of electrons escape from the tip of the filament but not from other parts of the filament when electrons escape from the filament.
In any of the above technical solutions, the bulb further includes: the positive electrode of the first power supply is connected with the extraction electrode and is used for providing electric energy for the extraction electrode so as to enable the extraction electrode to work at a first set voltage; and/or a second power supply, the negative electrode of the second power supply is connected with the suppression electrode, and the second power supply is used for supplying electric energy to the suppression electrode so that the suppression electrode works at a second set voltage.
In the technical scheme, the bulb tube further comprises a first power supply, the positive electrode of the first power supply is connected with the extraction electrode and is used for providing electric energy for the extraction electrode so that the extraction electrode works at a first set voltage, specifically, the extraction electrode is of an annular iron sheet structure, and is connected with the positive electrode of the first power supply, so that the extraction electrode is positively charged, a substance carrying negative charges is attracted by the built extraction electric field, electrons carry negative charges, the extraction electrode can realize electron escape of the tip of the attraction filament, and compared with an adjusting mode only for improving the temperature of the filament, the electron escape quantity of the tip of the filament can be rapidly increased by arranging the extraction electrode, the value of current between the tip of the filament and an anode target is rapidly improved, and the current adjusting operation of the quick response tube is realized.
The first power supply is connected with the extraction electrode, so that the extraction electrode can be electrified to construct an extraction electric field, and the long-time use of the extraction electrode is realized. The operator changes the output voltage of the first power supply, so that the extraction electrode has a corresponding working voltage, and the operator can conveniently control the extraction electrode according to the first set voltage.
Specifically, the bulb tube comprises an operation control component, the operation control component is connected with a first power supply, namely, the operation control component is indirectly connected with the extraction electrode through the first power supply, an operator inputs a tube current set value which is intended to be achieved by the bulb tube into the operation control component, and the operation control component correspondingly changes the output voltage of the first power supply, so that the extraction electrode has a corresponding working voltage.
The bulb tube also comprises a second power supply, wherein the negative electrode of the second power supply is connected with the suppression electrode and is used for providing electric energy for the suppression electrode so that the suppression electrode works at a second set voltage. Specifically, the suppression electrode is of a ring-shaped iron sheet structure, and is connected with the negative electrode of the second power supply, so that the suppression electrode is negatively charged, an electric field is built after the suppression electrode is electrified, and the built electric field repels substances carrying negative charges due to the principle of like polarity repulsion, and the suppression electrode surrounds the periphery of the filament, so that the electron escape quantity of the part of the filament except for the part close to the anode target is suppressed, the directionality of electron movement is improved, and a larger number of electrons are utilized for generating X rays.
The long-time use of the suppression electrode is realized through the connection arrangement of the second power supply and the suppression electrode. The operator can correspondingly enable the suppression electrode to have different working voltages by changing different output voltages of the second power supply, and the operator can conveniently control the suppression electrode according to the second set voltage.
Further, the operation control component included in the bulb tube is connected with the second power supply at the same time, namely, the operation control component is indirectly connected with the suppression electrode through the second power supply, and an operator can change the output voltage of the second power supply through the operation control component, so that the suppression electrode has a corresponding working voltage.
In any of the above technical solutions, the bulb further includes: the inner tube is arranged on the shell, one end of the inner tube is provided with a tube orifice corresponding to the tip of the filament, and the other end of the inner tube is provided with a tube orifice corresponding to the anode target; the inner tube has a vacuum transmission path through which electrons move from the tip of the filament to the anode target.
In this technical scheme, the bulb still includes the inner tube, and the inner tube sets up in the casing, and the one end mouth of pipe of inner tube corresponds with the pointed end of filament, and the other end mouth of pipe of inner tube corresponds with the positive pole target, and the inner tube sets up between positive pole target and the pointed end of filament, and the inner tube has vacuum transmission path, and the electron is moved to positive pole target via vacuum transmission path from the pointed end of filament.
Through the setting of inner tube, realize electron transmission's environment is vacuum environment, can not receive the blocking of air after the electron escapes, and the velocity of movement can not receive the influence, finally can strike on the positive pole target under the circumstances that has higher speed, and the motion of electron is prevented, and the part of its kinetic energy just can convert into radiant energy, finally generates X-ray.
In any of the above technical solutions, the bulb further includes: the focusing coil is sleeved on the inner tube and used for converging electrons in the inner tube; the deflection coil is sleeved on the inner tube and positioned between the focusing coil and the anode target, and is used for deflecting the moving direction of the converged electrons.
In the technical scheme, the bulb tube further comprises a focusing coil, the focusing coil is sleeved on the inner tube, and the focusing coil is used for converging electrons moving in multiple directions in the inner tube so as to increase electron beam current.
Further, the bulb tube also comprises a deflection coil, the deflection coil is sleeved on the inner tube and is positioned between the focusing coil and the anode target, and the deflection coil is used for deflecting the movement direction of the converged electrons.
The collected electrons bombard different positions of the anode target under the action of the deflection coil, so that a focus is quickly changed between two different positions on the target surface of the anode target, each projection of each scanning is recorded at multiple angles, the sampling interval is increased, the spatial resolution in a plane is increased, the definition of an image is greatly improved, and the single-point heat of the target surface of the anode target can be reduced.
In any of the above technical solutions, the filament and the extraction electrode are disposed inside the housing, and the bulb further includes: the ion pump is arranged on the shell, a working port of the ion pump is communicated with the inside of the shell and corresponds to the filament, and the working port is used for enabling the environment where the filament is located to be a vacuum environment.
In this technical scheme, filament and extraction electrode set up in the inside of casing, and the bulb still includes: the ion pump is arranged on the shell, is particularly positioned outside the shell, and a work port of the ion pump is communicated with the inside of the shell and corresponds to the filament, so that the environment where the filament is positioned is a vacuum environment. Through the setting of ion pump, can guarantee the vacuum degree of filament place environment, and then improve the live time of filament.
According to a second object of the present invention, the present invention further provides a method for controlling a bulb, for a bulb according to any one of the above-mentioned technical solutions, where the method for controlling a bulb includes: determining a first set voltage of the extraction electrode according to a tube current set value, wherein the tube current set value is a target current value generated between the tip of the filament and the anode target; the extraction electrode is controlled to operate at a first set voltage.
The method for controlling the bulb tube provided by the second object of the invention is used for the bulb tube in any one of the technical schemes, so that the method has all the beneficial effects of the bulb tube in any one of the technical schemes.
In the above technical solution, after controlling the extraction electrode to operate at the first set voltage, the control method further includes: determining a target working temperature of the filament according to the tube current set value; and adjusting the temperature of the filament to the target working temperature.
According to a third object of the present invention, the present invention also provides a device for controlling the operation of a bulb, for implementing the steps of the method for controlling a bulb according to the above technical solution, where the device for controlling the operation of a bulb includes: the processing unit is used for determining a first set voltage of the extraction electrode according to a tube current set value, wherein the tube current set value is a target current value generated between the tip of the filament and the anode target; and the execution unit is used for controlling the extraction electrode to work at a first set voltage.
The operation control device for a bulb provided by the third object of the present invention is specifically applicable to the bulb provided by the first object, where the operation control device for a bulb is used for implementing the steps of the control method for a bulb in the technical solution. Therefore, the control method of the bulb tube has all the beneficial effects of the control method of the bulb tube in the technical scheme.
The bulb operation control device specifically comprises a processing unit and an execution unit, wherein the processing unit is used for determining a first set voltage of the extraction electrode according to a tube current set value, and the execution unit is used for controlling the extraction electrode to work at the first set voltage. Further, the processing unit is also used for determining the target working temperature of the filament according to the tube current set value; the bulb tube also comprises an adjusting unit, and the adjusting unit is used for adjusting the temperature of the filament to the target working temperature.
According to a fourth object of the present invention, the present invention also provides a bulb operation control assembly, including a processor and a memory, where the memory stores a program or an instruction that can be executed by the processor, and the program or the instruction implements the steps of the bulb control method in the above technical solution when executed by the processor.
The running control component of the bulb provided by the fourth object of the invention can be specifically assembled on the bulb provided by the first object, and the running control component of the bulb can realize the steps of the control method of the bulb in the technical scheme through the cooperation of the processor and the memory, so that the running control component of the bulb has all the beneficial effects of the control method of the bulb in the technical scheme.
According to a fifth object of the present invention, there is also provided a readable storage medium having a program stored thereon, which when executed by a processor, implements the steps of the bulb control method as set forth in the above-mentioned aspects.
The readable storage medium according to the fifth aspect of the present invention realizes the steps of the method for controlling a bulb according to the above-mentioned technical scheme when the program stored on the readable storage medium is executed by the processor, and thus has all the advantages of the method for controlling a bulb according to the above-mentioned technical scheme.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 shows a schematic structural view of a bulb in one embodiment of the present invention;
FIG. 2 is a flow chart of a method for controlling a bulb according to an embodiment of the present invention;
FIG. 3 is a second flow chart of a method for controlling a bulb according to an embodiment of the present invention;
FIG. 4 is a schematic block diagram showing the construction of a bulb operation control device in one embodiment of the present invention;
fig. 5 is a schematic block diagram showing the construction of the operation control assembly of the bulb in one embodiment of the present invention.
The correspondence between the reference numerals and the component names in fig. 1 is:
100 bulb, 110 housing, 112 receiving chamber, 114 radiation emitting port, 116 cooling zone, 118 filament, 120 tip, 122 power supply, 126 third power supply, 128 fourth power supply, 130 extraction electrode, 132 anode target, 134 hydrophobic wire, 136 suppression electrode, 138 first power supply, 140 second power supply, 142 inner tube, 144 focusing coil, 146 deflection coil, 148 ion pump, 150 glazing.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, without conflict, the embodiments of the present invention and features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.
As shown in fig. 1, in one embodiment of the present invention, a bulb 100 is provided, the bulb 100 including: a housing 110; a filament 118 disposed in the housing 110 for generating electrons; a power supply 122 connected to the filament 118 for supplying power to the filament 118 to operate the filament 118 to generate electrons; an anode target 132 disposed in the housing 110 corresponding to the tip 120 of the filament 118; an extraction electrode 130 disposed in the housing 110 and between the tip 120 of the filament 118 and the anode target 132 and close to the tip 120 of the filament 118, the extraction electrode 130 being operated at a first set voltage to form an extraction electric field at the tip 120 of the filament 118, increasing the number of electron runaway at the tip 120 of the filament 118, thereby increasing the current between the tip 120 of the filament 118 and the anode target 132.
In this embodiment, the bulb 100 according to the present invention includes a housing 110, a filament 118, a power supply 122, an anode target 132, and an extraction electrode 130, and the housing 110 serves as a main structural member of the entire bulb 100 for supporting other components.
Specifically, the housing 110 is a non-magnetic stainless steel housing, which is easier to process in batches than a conventional glass housing, and is easier to transport and produce than a glass housing, and the non-magnetic stainless steel housing can avoid generating a magnetic field to affect an electronic flight path and avoid image distortion.
The filament 118 is disposed in the housing 110 for generating electrons, and the power supply 122 is a component acting on the filament 118 and connected to the filament 118 for supplying electric energy to the filament 118, and the filament 118 operates after being powered to release electrons to the outside. The anode target 132 is disposed on the housing 110 and corresponds to the tip 120 of the filament 118, and electrons escaping from the tip 120 of the filament 118 have a certain velocity, and since the anode target 132 corresponds to the tip 120 of the filament 118, the finally moved electrons strike the target surface of the anode target 132, the movement of the electrons is prevented, and a part of the kinetic energy is converted into radiant energy, thereby generating X-rays.
Specifically, the filament 118 has a first connection point and a second connection point, the power supply 122 includes a third power supply 126, the positive electrode of the third power supply 126 is connected to the first connection point, the negative electrode of the third power supply 126 is connected to the second connection point, and the third power supply 126 and the filament 118 form a loop, so as to provide the filament 118 with a filament voltage (Vf) and a filament current (If) set by an operator.
Specifically, filament 118 comprises a single crystal tungsten-plated zirconia filament having a longer lifetime and greater brightness.
Further, the power supply 122 further includes a fourth power supply 128, where the fourth power supply 128 is connected to the filament, and the fourth power supply 128 is mainly a high-voltage power supply for determining a moving speed of electrons escaping from the filament, specifically, if an output voltage (Uo) of the fourth power supply 128 is 100KV, the moving speed of electrons escaping from the filament corresponds to the moving speed of electrons under 100 KV.
An extraction electrode 130 is disposed in the housing between the tip 120 of the filament 118 and the anode target 132, and is proximate to the tip 120 of the filament 118. When the bulb 100 works, the power supply 122 provides electric energy to the filament 118, the filament 118 works correspondingly to release electrons outwards, the electrons released by the tip 120 of the filament 118 move towards the anode target 132, and a current is generated between the tip 120 of the filament 118 and the anode target 132 due to the movement of the electrons, and the current is the tube current of the bulb 100.
When the value of the tube current needs to be adjusted, the extraction electrode 130 may play a role in the adjustment process, wherein the operator may set the value of the first set voltage according to the value to which the tube current needs to be increased, i.e., the tube current set value, so that the extraction electrode 130 operates at the first set voltage.
Specifically, in one aspect, the operator may set the value of the first set voltage directly after the calculation. On the other hand, the bulb 100 further includes an operation control assembly connected to the extraction electrode 130 for controlling the extraction electrode 130 to operate at a first set voltage. Specifically, the operator inputs the tube current set point into the operation control assembly, and the operation control assembly can correspondingly set the first set voltage according to the tube current set point and make the extraction electrode 130 operate at the first set voltage.
When the extraction electrode 130 works at the first set voltage, the extraction electrode 130 can be electrified and generate an extraction electric field with the intensity corresponding to the first set voltage, and as the extraction electrode 130 is positioned at the tip 120 of the filament 118, the extraction electric field acts on the tip 120 of the filament 118, and under the action of the extraction electric field, the process of escaping electrons from the tip 120 of the filament 118 can be assisted, so that electrons are easier to escape from the tip 120 of the filament 118, the number of electrons escaping from the tip 120 of the filament 118 per second is increased, the value of the current between the tip 120 of the filament 118 and the anode target 132 is correspondingly increased, and finally, the tube current of the bulb 100 is adjusted to the tube current set value.
The invention is based on a Schottky field emission source, and is provided with the extraction electrode 130 for assisting electron escape, so that an extraction electric field is constructed, and the extraction electric field acts on the tip 120 of the filament 118, thereby increasing the escape quantity of electrons without only depending on the regulation and control of the temperature of the filament 118, and reducing the waiting time of the electron escape quantity reaching the requirement. In addition, since the extraction electrode 130 is an electrode element, the response of the extraction electrode 130 to the voltage change is faster, the specific value of the first set voltage is set, the extraction electrode 130 can quickly change the current working voltage to the first set voltage, correspondingly form an extraction electric field with different field strengths, assist the tip 120 of the filament 118 to quickly and largely release electrons, realize the quick response adjustment requirement, reduce the time of the bulb 100 for adjusting the electron release quantity, thereby realizing the quick adjustment of the tube current, enabling the bulb 100 to achieve millisecond-level adjustment, and improving the response speed of the bulb 100 for adjusting the tube current.
Further, in the adjustment, the temperature of the whole filament 118 may be increased by adjusting the duty ratio of the pwm wave of the current supplied to the filament 118, and the temperature of the filament 118 may be correspondingly increased. As the temperature of the filament 118 as a whole increases, the temperature of the tip 120 of the filament 118 increases, thereby increasing the number of escaping electrons. When the temperature of the filament 118 increases, the value of the first set voltage is reduced, and the voltage of the extraction electrode 130 is gradually reduced to avoid the value of the tube current exceeding the desired value.
As shown in FIG. 1, in one embodiment of the invention, the target surface of anode target 132 has an angle a with the axis of filament 118, where 6A 18.
In this embodiment, the target surface of anode target 132 has an angle a with the axis of filament 118, where 6A 18.
By tilting the target surface of anode target 132 relative to filament 118, the actual focal surface can be increased and the effective focal point reduced, thereby increasing the heat capacity of bulb 100, improving image quality and making the image clearer.
Specifically, the included angle a may be 6 °, 12 °, 15 °, or 18 °.
Specifically, anode target 132 includes a molybdenum target, a tungsten target, a molybdenum tungsten alloy target, or other alloy target.
Specifically, the housing 110 is provided with a receiving cavity 112, and the filament 118, the anode target 132, and the extraction electrode 130 are all disposed in the housing 110 and are all located in the receiving cavity 112.
Further, the housing 110 is provided with a radiation emitting port 114, and x-rays can be emitted from the radiation emitting port 114 to the outside of the housing 110.
The bulb 100 is mounted on a C-arm of a medical imaging device in use, and it is required to cooperate with a flat panel display to direct X-rays towards the flat panel display, so that a definite direction of emission is required to be defined, such that an operator mounts the bulb 100 with reference thereto, and the radiation emission port 114 provided on the bulb 100 is an opening defining the final direction of emission of X-rays of the bulb 100.
Further, the filament 118 is positioned at one end within the receiving cavity 112, and the anode target 132 is positioned at the other end of the filament 118, respectively.
Further, a cooling area 116 is disposed at one end of the accommodating cavity 112, a liquid or solid coolant can be stored in the cooling area 116, and the anode target 132 is correspondingly disposed at one end of the cooling area 116, so that the purpose of reducing the temperature and increasing the service life by the coolant can be achieved.
Further, the bulb 100 further includes a glass window 150, which covers the radiation emitting opening 114.
As shown in fig. 1, in one embodiment of the present invention, the bulb 100 further includes: and a high voltage generator, the positive electrode of which is connected to the anode target 132.
In this embodiment, the bulb 100 further includes a high voltage generator capable of generating kilovolt voltage electric energy, and after the anode target 132 obtains the high voltage electric energy, a high voltage electric field is generated between the anode target 132 and the tip 120 of the filament 118 under the action of two stages of high voltages, the electrons are driven, speed is increased and collide with the anode target 132, and energy conversion occurs after the electrons moving at high speed collide with the anode target 132, so as to generate X-rays.
Further, the bulb 100 further includes: and a current-conducting wire 134, one end of the current-conducting wire 134 is connected to the anode target 132, and the other end of the current-conducting wire 134 is connected to a ground line.
As shown in fig. 1, in use, the hydrophobic wire 134 has one end connected to the anode target 132 and the other end connected to Ground (GND), and the positive electrode of the fourth power supply 128 in the power supply device 122 is connected to Ground (GND). The current-conducting wire 134 can be connected to the anode target 132 to introduce the current of the anode target 132 into itself, and finally, the current is input back to the positive electrode of the fourth power supply 128 through the connection to the Ground (GND), so that the potentials of the anode target 132 and the Ground (GND) are equalized, thereby ensuring safety.
As shown in fig. 1, in one embodiment of the present invention, the bulb 100 further includes: and a suppression electrode 136 provided on the housing 110 and located on the peripheral side of the filament 118, the suppression electrode 136 being operated at a second set voltage to suppress electrons from escaping from the portion of the filament 118 other than the tip 120.
In this embodiment, the bulb 100 further includes a suppression electrode 136, where the suppression electrode 136 is disposed on the shell 110 and located on the peripheral side of the filament 118, specifically, the suppression electrode 136 is an annular structure with a central opening, and is located on the peripheral side of the filament 118 through the central opening.
The suppression electrode 136 can work with a second set voltage, the second set voltage is a working voltage required to be reached by the suppression electrode 136 set by an operator, the suppression electrode 136 is an electrode element, the suppression electrode 136 can quickly respond to voltage change, and the current voltage of the suppression electrode 136 can reach the second set voltage in a short time, so that quick response adjustment is realized. Specifically, when the control suppression electrode 136 is operated at the second set voltage, the temperature of the filament 118 is stabilized.
When the suppression electrode 136 operates at the second set voltage, the suppression electrode 136 is capable of generating a suppression electric field to control the escape direction of electrons, so that most of electrons escape from the tip 120 of the filament 118, but not from other parts of the filament 118, when electrons escape from the filament 118.
As shown in fig. 1, in one embodiment of the present invention, the bulb 100 further includes: a first power source 138, wherein a positive electrode of the first power source 138 is connected to the extraction electrode 130, and is used for providing electric energy to the extraction electrode 130 so as to make the extraction electrode 130 work at a first set voltage; and/or a second power supply 140, the negative electrode of the second power supply 140 is connected to the suppression electrode 136, for providing electrical energy to the suppression electrode 136 to operate the suppression electrode 136 at a second set voltage.
In this embodiment, the bulb 100 further includes a first power source 138, where the positive electrode of the first power source 138 is connected to the extraction electrode 130, so as to provide electric energy to the extraction electrode 130 to make the extraction electrode 130 work at a first set voltage, specifically, the extraction electrode 130 is in a ring-shaped iron sheet structure, and is connected to the positive electrode of the first power source 138, so that the extraction electrode 130 is positively charged, the extracted electric field created by the extraction electric field attracts substances carrying negative charges, electrons carry negative charges, and the extracted electric field can further realize electron escape of the tip 120 of the filament 118.
Through the connection arrangement of the first power supply 138 and the extraction electrode 130, the extraction electrode 130 can be electrified to construct an extraction electric field, so that the long-time use of the extraction electrode 130 is realized. As shown in fig. 1, by changing the value of the output voltage (Vext) of the first power source 138, the extraction electrode 130 can have a corresponding working voltage, so that an operator can control the extraction electrode 130 according to the first set voltage.
Specifically, the process of operating the extraction electrode 130 according to the first set voltage by the first power source 138 may be understood as setting the operating voltage that the extraction electrode 130 should reach according to the number of electrons escaping to be adjusted, which is the first set voltage. Then, the first power source 138 is adjusted, the value of the output voltage (Vext) of the first power source 138 is changed to the value of the first set voltage, and the operation voltage of the extraction electrode 130 receiving the power supplied by the first power source 138 is adjusted to the value of the voltage equal to the power output by the first power source 138 at this time correspondingly to the connection with the first power source 138, so that the extraction electrode 130 operates according to the first set voltage.
Specifically, the bulb 100 includes an operation control component, where the operation control component is connected to the first power source 138, that is, the operation control component is indirectly connected to the extraction electrode 130 through the first power source 138, and an operator inputs a tube current set value that the bulb 100 wants to reach into the operation control component, and the operation control component correspondingly changes an output voltage of the first power source, so that the extraction electrode 130 has a corresponding working voltage.
Further, in the process of increasing the tube current of the bulb tube 100, the temperature of the filament 118 is correspondingly increased, and when the temperature of the filament 118 is increased to meet the escape quantity requirement, the value of the first set voltage is gradually reduced, so that excessive adjustment is avoided.
The bulb 100 further includes a second power supply 140, where a negative electrode of the second power supply 140 is connected to the suppression electrode 136, and is used to supply electric energy to the suppression electrode 136 to make the suppression electrode 136 work at a second set voltage, specifically, the suppression electrode 136 is in a ring-shaped iron sheet structure, and further, the suppression electrode 136 is negatively charged, after the suppression electrode 136 is energized, an electric field is also built up, and because the suppression electrode 136 is negatively charged, the built-up electric field repels substances carrying negative charges due to the principle of like-polarity repulsion, the suppression electrode 136 surrounds the periphery of the filament 118, so that it can suppress the electron escaping amount of a part of the filament 118 except for the part close to the anode target 132, and also repel electrons carrying negative charges, so that a small amount of escaping electrons of the other part of the filament 118 can not move all around any more, and can move towards the anode target 132 along the axis direction of the tip 120 of the filament 118, thereby improving the directionality of electron movement, and making a larger amount of electrons available for X-ray generation.
Through the connection arrangement of the second power supply 140 and the suppression electrode 136, the suppression electrode 136 can be powered on to construct a suppression electric field, and long-time use of the suppression electrode 136 is realized. As shown in fig. 1, changing the value of the output voltage (Vsup) of the second power supply 140 can make the suppression electrode 136 have a corresponding working voltage, so that an operator can control the suppression electrode 136 according to the second set voltage.
Specifically, the process of operating the suppression electrode 136 according to the second set voltage by the second power supply 140 may be understood as setting the operation voltage that the suppression electrode 136 should reach according to the required limiting electron escape direction and number, which is the second set voltage. Then, the second power supply 140 is adjusted, the value of the output voltage (Vsup) of the second power supply 140 is changed to the value of the second set voltage, and the operation voltage of the suppression electrode 136 receiving the power supplied by the second power supply 140 is adjusted to the value of the voltage equal to the power output by the second power supply 140 at the time of connecting the suppression electrode 136 to the second power supply 140, so that the suppression electrode 136 operates according to the second set voltage.
Further, the operation control component included in the bulb 100 is connected to the second power supply 140 at the same time, that is, the operation control component is indirectly connected to the suppression electrode 136 through the second power supply 140, and an operator can change the output voltage of the second power supply 140 through the operation control component, that is, the suppression electrode 136 has a corresponding working voltage.
As shown in fig. 1, in one embodiment of the present invention, the bulb 100 further includes: an inner tube 142 disposed in the housing 110, wherein a tube opening at one end of the inner tube 142 corresponds to the tip 120 of the filament 118, and a tube opening at the other end of the inner tube 142 corresponds to the anode target 132; the inner tube 142 has a vacuum transmission path through which electrons travel from the tip 120 of the filament 118 to the anode target 132.
In this embodiment, the bulb 100 further includes an inner tube 142, the inner tube 142 is disposed in the housing 110, one end of the inner tube 142 corresponds to the tip 120 of the filament 118, and the other end of the inner tube 142 corresponds to the anode target 132, i.e., the inner tube 142 is disposed between the anode target 132 and the tip 120 of the filament 118, the inner tube 142 has a vacuum transmission path through which electrons move from the tip 120 of the filament 118 to the anode target 132.
Through the setting of inner tube 142, the environment that realizes electron transport is vacuum environment, can not receive the blocking of air after the electron escapes, and the velocity of movement can not receive the influence, can strike on anode target 132 under the circumstances that has higher speed at last, and the motion of electron is prevented, and the part of its kinetic energy just can convert into radiant energy, finally generates X ray.
As shown in fig. 1, in one embodiment of the present invention, the bulb 100 further includes: the focusing coil 144 is sleeved on the inner tube 142, and the focusing coil 144 is used for converging electrons in the inner tube 142; the deflection coil 146 is sleeved on the inner tube 142 and is positioned between the focusing coil 144 and the anode target 132, and the deflection coil 146 is used for deflecting the movement direction of the converged electrons.
In this embodiment, the bulb further includes a focusing coil 144, where the focusing coil 144 is sleeved on the inner tube 142, and the focusing coil 144 is used to focus electrons moving in multiple directions in the inner tube 142 to increase the electron beam current.
Specifically, the focusing coil 144 may focus electrons moving in multiple directions in the inner tube 142 in a specific direction, specifically, at a central axis position of the focusing coil 144.
Further, the bulb 100 further includes a deflection coil 146, the deflection coil 146 is sleeved on the inner tube 142 and located between the focusing coil 144 and the anode target 132, and the deflection coil 146 is used for deflecting the movement direction of the converged electrons.
The collected electrons bombard different positions of the anode target 132 under the action of the deflection coil 146, so that the focus is quickly changed between two different positions on the target surface of the anode target 132, each projection of each scanning is recorded at multiple angles, the sampling interval is increased, the spatial resolution in a plane is increased, the definition of an image is greatly improved, and the single-point heat of the target surface of the anode target 132 can be reduced.
Specifically, the housing 110 is provided with a receiving cavity 112, the sidewall of the housing 110 is provided with a radiation emitting port 114, and the filament 118, the anode target 132, the extraction electrode 130, the inner tube 142, the focusing coil 144 and the deflection coil 146 are all disposed in the housing 110 and are all disposed in the receiving cavity 112, so that each component can be protected.
As shown in fig. 1, in one embodiment of the present invention, the filament 118 and the extraction electrode 130 are disposed inside the housing 110, and the bulb 100 further includes: the ion pump 148 is disposed in the housing 110, and a working port of the ion pump 148 is communicated with the interior of the housing 110 and corresponds to the filament 118, so that the filament 118 is in a vacuum environment.
In this embodiment, filament 118 and extraction electrode 130 are disposed inside of housing 110, bulb 100 further comprising: the ion pump 148, the ion pump 148 is disposed on the housing 110, specifically on the outside of the housing 110, and the working port of the ion pump 148 is communicated with the inside of the housing 110 and corresponds to the filament 118, so that the filament 118 is in a vacuum environment. By the arrangement of the ion pump 148, the vacuum degree of the environment where the filament 118 is positioned can be ensured, and the service time of the filament 118 is prolonged.
As shown in fig. 2, one of the flow charts of the control method of the bulb according to an embodiment of the present invention is shown, where the control method includes:
S202: determining a first set voltage of the extraction electrode according to the tube current set value;
s204: the extraction electrode is controlled to operate at a first set voltage.
In this embodiment, the method for controlling a bulb according to the present invention is used for the bulb according to any one of the embodiments, and therefore has all the advantages of the bulb according to any one of the embodiments.
The control method of the bulb is used for realizing rapid control of the tube current change of the bulb, and particularly increasing the tube current of the bulb. The control method comprises the steps of firstly receiving a tube current set value of the bulb tube, correspondingly determining a first set voltage for the working of the extraction electrode according to the tube current set value after receiving the tube current set value of the bulb tube, and then controlling the extraction electrode to work at the first set voltage.
When the lamp works at the first set voltage, the extraction electrode can be electrified and generate an extraction electric field with the intensity corresponding to the first set voltage, and the extraction electric field is arranged at the tip of the lamp filament when the lamp filament is arranged in the shell, so that the extraction electric field can act on the tip of the lamp filament, the process of escaping electrons from the tip of the lamp filament can be assisted under the action of the extraction electric field, electrons are more easily escaped from the tip of the lamp filament, the number of electrons escaped from the tip of the lamp filament per second is increased, the value of current between the tip of the corresponding lamp filament and the anode target is also increased, and finally, the tube current of the bulb tube is adjusted to the value required to be mentioned.
The extraction electrode is an electrode element and has quick response to voltage change, so that after a specific value of the first set voltage is set, the extraction electrode can quickly change the current working voltage to the first set voltage, correspondingly form an extraction electric field with different field strengths, quickly and largely escape electrons from the tip of the auxiliary filament, reduce the time for adjusting the electron escape quantity of the filament, and quickly increase the tube current of the bulb.
As shown in fig. 3, a second flow chart of a method for controlling a bulb according to an embodiment of the present invention is shown, where the method includes:
s302: determining a first set voltage of the extraction electrode according to the tube current set value;
s304: controlling the extraction electrode to work at a first set voltage;
s306: determining a target working temperature of the filament according to the tube current set value;
s308: and adjusting the temperature of the filament to the target working temperature.
In this embodiment, the method for controlling a bulb provided by the present invention further includes changing the temperature of the filament after the working voltage of the extraction electrode is changed, specifically, after the extraction electrode is controlled to work at the first set voltage, determining the target working temperature of the filament according to the tube current set value. After the target working temperature of the filament is determined, the temperature of the filament is adjusted to the target working temperature, and finally, the requirements of the number of the escaped electrons are met by combining two modes of changing the temperature of the filament and using the extraction electrode for assistance, so that the mode of adjusting the number of the escaped electrons of the filament is more suitable for bulb tube equipment, and the energy loss in an adjusting process is reduced.
Specifically, the process of adjusting the temperature of the filament to the target operating temperature specifically includes: and determining a working set value of the duty ratio of the pulse width modulation wave of the current fed into the filament according to the target working temperature of the filament, and adjusting the value of the duty ratio to the working set value.
The invention determines the working set value of the duty ratio of the pulse width modulation wave of the current fed into the filament according to the target working temperature of the filament, namely the temperature to which the filament is to be lifted, and adjusts the value of the duty ratio to the working set value after determining the working set value, thereby correspondingly improving the temperature of the filament and finally reaching the target working temperature.
Further, the control method of the bulb tube further comprises the following steps: detecting the current temperature of the filament, adjusting the first set voltage according to the current temperature of the filament, and controlling the extraction electrode to work at the adjusted first set voltage.
As the temperature of the filament as a whole increases, the temperature of the tip of the filament increases, thereby increasing the number of escaping electrons. When the filament temperature rises, the voltage of the extraction electrode gradually decreases to avoid the tube current exceeding the expected value.
As shown in fig. 4, in an embodiment of the present invention, there is further provided a device 400 for controlling the operation of a bulb, for implementing the steps of the method for controlling a bulb in the above embodiment, the device 400 for controlling the operation of a bulb includes: a processing unit 410 for determining a first set voltage of the extraction electrode according to a tube current set value, the tube current set value being a target current value generated between a tip of the filament and the anode target; and an execution unit 420 for controlling the extraction electrode to operate at a first set voltage.
In this embodiment, the operation control device 400 for a bulb according to the present invention is specifically applicable to the bulb according to the above embodiment, where the operation control device 400 for a bulb specifically includes a processing unit 410 and an execution unit 420, and the processing unit 410 is configured to determine a first set voltage of an extraction electrode according to a tube current set value, where the tube current set value is a target current value generated between a tip of a filament and an anode target; the execution unit 420 is used for controlling the extraction electrode to work at a first set voltage. By the operation of the processing unit 410 and the execution unit 420, the operation control device 400 for a bulb can implement the steps of the control method for a bulb in the above embodiment, and thus has all the advantages of the control method for a bulb in the above embodiment.
Further, the processing unit 410 is further configured to determine a target operating temperature of the filament according to the tube current set point; the bulb further comprises an adjusting unit 430, wherein the adjusting unit 430 is used for adjusting the temperature of the filament to the target working temperature.
Further, the processing unit 410 is further configured to detect a current temperature of the filament, adjust the first set voltage according to the current temperature of the filament, and the execution unit 420 is further configured to control the extraction electrode to operate at the adjusted first set voltage.
As shown in fig. 5, in an embodiment of the present invention, a bulb operation control assembly 500 is further provided, which includes a processor 520 and a memory 510, where the memory 510 stores a program or an instruction that can be executed by the processor 520, and the program or the instruction implements the steps of the bulb control method in the above technical solution.
In this embodiment, the operation control module 500 for a bulb according to the present invention may be specifically assembled to the bulb in the above embodiment, and the operation control module 500 for a bulb may implement the steps of the control method for a bulb in the above embodiment through the cooperation of the processor 520 and the memory 510 included therein, so that all the advantages of the control method for a bulb in the above embodiment are achieved.
In one embodiment of the present invention, the present invention also proposes a readable storage medium having a program stored thereon, which when executed by a processor, implements the steps of the method for controlling a bulb as in the above embodiment.
In this embodiment, the readable storage medium according to the present invention, on which the program stored is executed by the processor, implements the steps of the method for controlling a bulb as in the above embodiment, and thus has all the advantageous effects of the method for controlling a bulb as in the above embodiment.
In the present invention, the term "plurality" means two or more, unless explicitly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A bulb, comprising:
a housing;
the filament is arranged on the shell and is used for generating electrons;
the power supply device is connected with the filament and is used for supplying electric energy to the filament so as to enable the filament to work to generate electrons;
an anode target arranged on the shell and corresponding to the tip of the filament;
the extraction electrode is arranged between the tip of the filament and the anode target and is close to the tip of the filament, and the extraction electrode works at a first set voltage to form an extraction electric field at the tip of the filament, so that the electron escape quantity of the tip of the filament is increased, and the current between the tip of the filament and the anode target is increased;
the inner tube is arranged on the shell, one end pipe orifice of the inner tube corresponds to the tip end of the filament, and the other end pipe orifice of the inner tube corresponds to the anode target;
the inner tube has a vacuum transmission path via which the electrons move from the tip of the filament to the anode target.
2. A bulb according to claim 1, wherein,
an included angle a is formed between the target surface of the anode target and the axis of the filament, wherein a is more than or equal to 6 degrees and less than or equal to 18 degrees.
3. The bulb according to claim 1, wherein the bulb further comprises:
and the anode of the high-voltage generating device is connected with the anode target.
4. The bulb according to claim 1, wherein the bulb further comprises:
and a suppression electrode provided on the housing and located on the peripheral side of the filament, the suppression electrode being operated at a second set voltage to suppress electrons from escaping from a portion of the filament other than the tip.
5. The bulb according to claim 4, further comprising:
the positive electrode of the first power supply is connected with the extraction electrode and is used for providing electric energy for the extraction electrode so as to enable the extraction electrode to work at a first set voltage; and/or
And the negative electrode of the second power supply is connected with the suppression electrode and is used for supplying electric energy to the suppression electrode so as to enable the suppression electrode to work at a second set voltage.
6. The bulb according to claim 1, wherein the bulb further comprises:
the focusing coil is sleeved on the inner tube and used for converging electrons in the inner tube.
7. The bulb according to claim 6, further comprising:
the deflection coil is sleeved on the inner tube and positioned between the focusing coil and the anode target, and is used for deflecting the movement direction of the converged electrons.
8. The bulb according to claim 1, wherein the filament and the extraction electrode are disposed inside a housing, the bulb further comprising:
the ion pump is arranged in the shell, a working port of the ion pump is communicated with the inside of the shell and corresponds to the filament, and the working port is used for enabling the environment where the filament is located to be a vacuum environment.
9. A control method of a bulb, characterized in that it is used for a bulb as claimed in any one of claims 1 to 8, the control method comprising:
determining a first set voltage of the extraction electrode according to a tube current set value, wherein the tube current set value is a target current value generated between the tip of the filament and the anode target;
and controlling the extraction electrode to work at the first set voltage.
10. The method of controlling a bulb according to claim 9, wherein after the controlling the extraction electrode to operate at the first set voltage, the method further comprises:
Determining a target operating temperature of the filament according to the tube current set point;
and adjusting the temperature of the filament to the target working temperature.
CN202310601548.0A 2023-05-26 2023-05-26 Bulb and control method thereof Pending CN116344297A (en)

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US20150270088A1 (en) * 2014-02-14 2015-09-24 Jeol Ltd. Electron Gun, Method of Controlling Same, and Electron Beam Additive Manufacturing Machine
KR20190080801A (en) * 2017-12-28 2019-07-08 주식회사 레메디 Miniature X-ray tube
CN111492456A (en) * 2018-11-28 2020-08-04 雷迈迪有限公司 Compact X-ray tube with extractor
US20220384136A1 (en) * 2021-05-28 2022-12-01 Wuhan United Imaging Healthcare Co., Ltd. Cathode emission device and x-ray tube using same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5616926A (en) * 1994-08-03 1997-04-01 Hitachi, Ltd. Schottky emission cathode and a method of stabilizing the same
US20020060573A1 (en) * 2000-11-17 2002-05-23 Denki Kagaku Kogyo Kabushiki Kaisha Method for determining an operational condition of a thermal field electron emitter, a method for operating the thermal field electron emitter and an electron beam utilizing system having the thermal field electron emitter
US20150270088A1 (en) * 2014-02-14 2015-09-24 Jeol Ltd. Electron Gun, Method of Controlling Same, and Electron Beam Additive Manufacturing Machine
KR20190080801A (en) * 2017-12-28 2019-07-08 주식회사 레메디 Miniature X-ray tube
CN111492456A (en) * 2018-11-28 2020-08-04 雷迈迪有限公司 Compact X-ray tube with extractor
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Application publication date: 20230627