CN103249237A - Power supply device for pulse perspective grid-controlled cold cathode X-ray tube - Google Patents
Power supply device for pulse perspective grid-controlled cold cathode X-ray tube Download PDFInfo
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- CN103249237A CN103249237A CN2012100299300A CN201210029930A CN103249237A CN 103249237 A CN103249237 A CN 103249237A CN 2012100299300 A CN2012100299300 A CN 2012100299300A CN 201210029930 A CN201210029930 A CN 201210029930A CN 103249237 A CN103249237 A CN 103249237A
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- 238000012163 sequencing technique Methods 0.000 claims description 2
- 238000002955 isolation Methods 0.000 abstract 1
- 230000009194 climbing Effects 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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Abstract
The invention relates to a power supply device for a pulse perspective grid-controlled cold cathode X-ray tube, and belongs to the technical field of medical devices. The device consists of a high-voltage power supply (1), a grid power supply (2), a singlechip board (3), a grid-controlled tube (4), an isolation unit (5) and a bias power supply (6) and is technically characterized in that the singlechip board (3) controls the bias power supply (6) to generate negative voltage, and the voltage is applied across a grid and a cathode of the grid-controlled tube (4); the high-voltage power supply (1) provides positive-negative high voltage set by the singlechip board (3), and the voltage is applied across an anode and the cathode of the grid-controlled tube (4); and the grid power supply (2) is controlled by the singlechip board (3) to generate a grid pulse which is applied on the two ends of the grid and the cathode of the grid-controlled tube (4). The device has the advantages of good safety and reliability, high precision and high stability.
Description
Technical field
The invention belongs to technical field of medical instruments.
Background technology
The X-ray production apparatus technology is used in existing medical X ray machine, especially operation, and when pulse was had an X-rayed, most elder generations added filament voltage to ray tube, add the positive negative pulse stuffing high pressure behind the preheating certain hour between ray tube anode and negative electrode.Because filament preheating time is longer, can cause the climbing of ray waveform, while high-voltage pulse circuit complex fault rate height, the high pressure response time is longer, make the pulse front and back elongated along the time, the image radiation quality, the frequent unlatching of high voltage source and filament supply and turn-offing serious image ray tube quality and life-span.
Summary of the invention
The present invention seeks to: for overcoming the defective of above-mentioned existence, the security reliability of increase equipment, make the ray waveform that good edge, front and back and the output of stable waveform be arranged, a kind of supply unit of grid-control cold cathode X ray bulb of pulse perspective of high precision high stability is provided.
The technical solution adopted in the present invention is: this device is by high voltage source (1), grid power supply (2), single-chip microcomputer plate (3), grid-control bulb (4), isolated location (5), grid bias power supply (6) is formed, its technical characterictic is: single-chip microcomputer plate (3) control grid bias power supply (6) produces a negative voltage, this voltage adds to grid and the negative electrode two ends of grid-control bulb (4) through isolated location (5), high voltage source (1) provides a positive or negative high voltage of being set by single-chip microcomputer plate (3), this voltage is added on anode and the negative electrode two ends of grid-control bulb (4), grid power supply (2) produces grid impulse by single-chip microcomputer plate (3) control, and grid impulse adds to grid and the negative electrode two ends of grid-control bulb (4) through isolated location (5).
Description of drawings:
Figure is this principle of device block diagram.
Embodiment
With reference to accompanying drawing, this device is made up of high voltage source (1), grid power supply (2), single-chip microcomputer plate (3), grid-control bulb (4), isolated location (5), grid bias power supply (6), and embodiment is:
1. the Single-chip Controlling high voltage source slowly rises to set point with high pressure, positive or negative high voltage is added on ray tube anode and negative electrode two ends, grid bias power supply adds a negative voltage through isolated location between ray tube grid and negative electrode, guarantee that ray tube effectively is operated in cut-off region when the non-grid pulse, grid power supply adds frame number through isolated location between ray tube grid and negative electrode, the grid impulse that duty ratio and voltage configure, when ray tube has anode and cathode high voltage simultaneously grid impulse to be arranged, ray tube produces ray pulse, thus grid voltage controlled amount ray tube tube current control processed roentgen dose X.
2. adopt the single-chip microcomputer sequencing control, effectively eliminate the unlatching of high voltage source and turn-off spike, effectively control grid pulse duty factor and frame number, grid power supply adopts to recommend does bridge circuit and PWM control, have high speed electronic switch, can accurately adjust grid voltage, and in the pulse duration of setting, open and turn-off grid impulse fast, guarantee the pulse on output edge, precipitous front and back and stable tube current.
Its advantage is: safe and reliable, and precision height, stability height.
Claims (3)
1. the supply unit that is used for pulse perspective grid-control cold cathode X ray bulb, its structure is made up of high voltage source (1), grid power supply (2), single-chip microcomputer plate (3), grid-control bulb (4), isolated location (5), grid bias power supply (6), it is characterized in that: with grid voltage switch control ray tube turn-on and turn-off, with grid voltage size control valve size of current.
2. the supply unit for pulse perspective grid-control cold cathode X ray bulb according to claim 1, it is characterized in that: single-chip microcomputer plate (3) control grid bias power supply (6) produces a negative voltage, this voltage adds to grid and the negative electrode two ends of grid-control bulb (4) through isolated location (5), high voltage source (1) provides a positive or negative high voltage of being set by single-chip microcomputer plate (3), this voltage is added on anode and the negative electrode two ends of grid-control bulb (4), grid power supply (2) produces grid impulse by single-chip microcomputer plate (3) control, and grid impulse adds to grid and the negative electrode two ends of grid-control bulb (4) through isolated location (5).
3. according to the described supply unit for pulse perspective grid-control cold cathode X ray bulb of claim 1, it is characterized in that: adopt the single-chip microcomputer sequencing control, eliminate the unlatching of high voltage source and turn-off spike, control grid pulse duty factor and frame number, grid power supply adopts Pull And Push Plate bridge circuit and PWM control, has high speed electronic switch, and grid voltage is adjusted, and in the pulse duration of setting, open and the shutoff grid impulse stablizing along precipitous and tube current before and after the assurance output pulse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100299300A CN103249237A (en) | 2012-02-10 | 2012-02-10 | Power supply device for pulse perspective grid-controlled cold cathode X-ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100299300A CN103249237A (en) | 2012-02-10 | 2012-02-10 | Power supply device for pulse perspective grid-controlled cold cathode X-ray tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103249237A true CN103249237A (en) | 2013-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100299300A Pending CN103249237A (en) | 2012-02-10 | 2012-02-10 | Power supply device for pulse perspective grid-controlled cold cathode X-ray tube |
Country Status (1)
| Country | Link |
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| CN (1) | CN103249237A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104144551A (en) * | 2014-03-05 | 2014-11-12 | 南京康众光电科技有限公司 | High voltage power system capable of controlling pulse emission of cold cathode X-ray apparatus |
| CN104411080A (en) * | 2014-10-30 | 2015-03-11 | 北京艾立科技有限公司 | Method for obtaining direct-current pulse high voltage applied to grid-control X-ray bulb tube |
| WO2020124691A1 (en) * | 2018-12-17 | 2020-06-25 | 深圳先进技术研究院 | X-ray source array, and x-ray tomography system and method |
Citations (6)
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| CN2046305U (en) * | 1988-12-01 | 1989-10-18 | 北京师范学院综合技术研究所 | Intermediate-frequency x-ray machine |
| CN1063988A (en) * | 1991-01-30 | 1992-08-26 | 通用电气公司 | The inductive x-ray tube of high voltage transient suppression |
| CN2134771Y (en) * | 1992-09-02 | 1993-05-26 | 成都地质学院 | Exciting source of portable x-ray fluorescent scope |
| CN1350769A (en) * | 1999-03-02 | 2002-05-22 | 浜松光子学株式会社 | X-ray generator, X-ray imaging apparatus and X-ray inspection system |
| US7315462B2 (en) * | 2004-04-21 | 2008-01-01 | Ge Medical Systems Global Technology Company, Llc | Stabilized power supply |
| CN101404852B (en) * | 2008-11-14 | 2011-04-20 | 上海安平静电科技有限公司 | Method and device for electrostatic elimination by optical ion |
-
2012
- 2012-02-10 CN CN2012100299300A patent/CN103249237A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2046305U (en) * | 1988-12-01 | 1989-10-18 | 北京师范学院综合技术研究所 | Intermediate-frequency x-ray machine |
| CN1063988A (en) * | 1991-01-30 | 1992-08-26 | 通用电气公司 | The inductive x-ray tube of high voltage transient suppression |
| CN2134771Y (en) * | 1992-09-02 | 1993-05-26 | 成都地质学院 | Exciting source of portable x-ray fluorescent scope |
| CN1350769A (en) * | 1999-03-02 | 2002-05-22 | 浜松光子学株式会社 | X-ray generator, X-ray imaging apparatus and X-ray inspection system |
| US7315462B2 (en) * | 2004-04-21 | 2008-01-01 | Ge Medical Systems Global Technology Company, Llc | Stabilized power supply |
| CN101404852B (en) * | 2008-11-14 | 2011-04-20 | 上海安平静电科技有限公司 | Method and device for electrostatic elimination by optical ion |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104144551A (en) * | 2014-03-05 | 2014-11-12 | 南京康众光电科技有限公司 | High voltage power system capable of controlling pulse emission of cold cathode X-ray apparatus |
| CN104144551B (en) * | 2014-03-05 | 2017-03-29 | 南京康众光电科技有限公司 | A kind of controllable pulse launches cold cathode X-ray machine high voltage power supply |
| CN104411080A (en) * | 2014-10-30 | 2015-03-11 | 北京艾立科技有限公司 | Method for obtaining direct-current pulse high voltage applied to grid-control X-ray bulb tube |
| WO2020124691A1 (en) * | 2018-12-17 | 2020-06-25 | 深圳先进技术研究院 | X-ray source array, and x-ray tomography system and method |
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Application publication date: 20130814 |