CN103260325A - Power source device for dental machine grid-control cold cathode X-ray tube - Google Patents
Power source device for dental machine grid-control cold cathode X-ray tube Download PDFInfo
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- CN103260325A CN103260325A CN2012100333176A CN201210033317A CN103260325A CN 103260325 A CN103260325 A CN 103260325A CN 2012100333176 A CN2012100333176 A CN 2012100333176A CN 201210033317 A CN201210033317 A CN 201210033317A CN 103260325 A CN103260325 A CN 103260325A
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Abstract
The invention discloses a power source device for a dental machine grid-control cold cathode X-ray tube, and belongs to the technical field of medical apparatuses and instruments. The power source device for the dental machine grid-control cold cathode X-ray tube is structurally composed of a high-voltage power source (1), a grid electrode power source (2), a single-chip microcomputer board (3), a grid-control bulb tube (4), current detection (5) and a closed-loop control panel (6). The power source device for the dental machine grid-control cold cathode X-ray tube is technically characterized in that the power source device does not need to be heated through filaments, the grid electrode power source is used for controlling the dental machine grid-control cold cathode X-ray tube to be opened and be closed, and the grid electrode power source controls tube current and forms closed-hoop control with the tube current. The power source device for the dental machine grid-control cold cathode X-ray tube has the advantages that a grid electrode switch ensures steepness of a leading edge and a lagging edge of a high-voltage wave form, the grid electrode power source and the tube current from closed-loop control to carry out dynamic adjustment on grid electrode voltage and the tube current, and current stability of the dental machine grid-control cold cathode X-ray tube is improved.
Description
Technical field
The invention belongs to technical field of medical instruments.
Background technology
Existing medical-dental X-ray production apparatus, majority provides heater current heating ray tube filament control valve electric current by filament supply, opening and closing control raytime by the control high voltage source, when filament cold conditions and when hot the difference of resistance bigger, temperature drift reduces the repeatability of heater current and tube current and consistency performance, filament needs warm-up time when heating, the ray waveform has the climbing phenomenon, response speed is slow, can't be synchronous with tube current, be difficult to realize closed-loop control, under pulse working mode, the climbing phenomenon will cause the deviation of setup parameter and actual parameter, and high voltage source forward position when opening and turn-off is longer along the time with the back, influences ray efficient under pulse working mode.
Summary of the invention
The present invention seeks to: for overcoming the defective of above-mentioned existence, improve operating efficiency and the stability of equipment, guarantee the ray waveform steadily and edge, front and back precipitous, raising tube current stability provides a kind of supply unit for dentistry machine grid-control cold cathode X-ray tube.
The technical solution adopted in the present invention is: this device is made up of high voltage source (1), grid power supply (2), single-chip microcomputer plate (3), grid-control bulb (4), current detecting (5), (6) six parts of closed-loop control plate, it is characterized in that: open and turn-off and change by setting grid voltage size control valve electric current with grid power supply control ray tube, the closed-loop control plate can be finished big dynamically closed loop adjustment grid voltage and stablize tube current.Concrete grammar is: high voltage source provides the ray tube anode positive high voltage to the grid-control bulb, grid power supply provides the ray tube grid-control voltage to the grid-control bulb, the single-chip microcomputer plate provides high-pressure opening and cut-off signals to high voltage source, provide current controling signal and grid impulse signal to grid power supply, the grid-control bulb receives the ray tube positive high voltage of high voltage source, ray tube grid-control voltage with grid power supply, current detecting is from grid-control bulb detector tube current signal, the tube current signal is given the closed-loop control plate, tube current and reference signal are carried out error amplification signal, error amplification signal send grid power supply to make grid power supply and tube current form closed-loop control, stablizes tube current.
Adopt high-accuracy sampling microwave network as current detection circuit, effectively suppress temperature and float, prevent the distortion of taking a sample, high voltage source adopts high-frequency high-power inversion and the stable high tension voltage of control technology output,
Description of drawings:
Figure is this principle of device block diagram.
Embodiment
With reference to accompanying drawing, this device is by high voltage source (1), grid power supply (2), single-chip microcomputer plate (3), grid-control bulb (4), current detecting (5), (6) six parts of closed-loop control plate are formed, its technology high voltage source (1) is by single-chip microcomputer plate (3) control high-pressure opening and shutoff, and provide the high pressure of the forward between grid-control bulb anode and the negative electrode by inversion boosting and rectifying and wave-filtering, grid power supply (2) voltage is added between the grid and negative electrode of grid-control bulb (4), high-speed electronic switch by single-chip microcomputer plate (3) control grid power supply (2), thereby unlatching and the shutoff of control gate ball-handling pipe (4), unlatching and shutoff and tube current size with control gate ball-handling pipe (4), the grid power supply (2) of single-chip microcomputer plate (3) control simultaneously reference voltage is controlled the output voltage size of grid power supply (2), thus control ray tube current size.Current detecting (5) adopts high-accuracy sampling microwave network, the detector tube electric current changes, give closed-loop control plate (6) with the tube current fluctuation signal, closed-loop control plate (6) adopts big dynamic high-accuracy error amplifier that tube current and benchmark are done the error amplification, error is amplified voltage and is dynamically adjusted grid power supply (2) voltage swing, reaches the effect of stablizing tube current.
Claims (3)
1. the supply unit that is used for dentistry machine grid-control cold cathode X-ray tube, its structure is made up of high voltage source (1), grid power supply (2), single-chip microcomputer plate (3), grid-control bulb (4), current detecting (5), closed-loop control plate (6), it is characterized in that: need not the filament heating, open and turn-off with grid power supply control ray tube, grid power supply control valve electric current and tube current form closed-loop control.
2. the supply unit for dentistry machine grid-control cold cathode X-ray tube according to claim 1, it is characterized in that: high voltage source provides the ray tube positive high voltage to the grid-control bulb, grid power supply provides the ray tube grid-control voltage to the grid-control bulb, the single-chip microcomputer plate provides high-pressure opening and cut-off signals to high voltage source, provide current controling signal and grid impulse signal to grid power supply, the grid-control bulb receives the ray tube positive high voltage of high voltage source, ray tube grid-control voltage with grid power supply, current detecting is from grid-control bulb detector tube current signal, the tube current signal is given the closed-loop control plate, tube current and reference signal are carried out error amplification signal, error amplification signal send grid power supply to make grid power supply and tube current form closed-loop control, stablizes tube current.
3. the supply unit for dentistry machine grid-control cold cathode X-ray tube according to claim 1, it is characterized in that: grid power supply control ray tube is opened and is turn-offed and pass through setting voltage size control valve electric current and changes, and the closed-loop control plate can be finished big dynamically closed loop adjustment grid voltage and stablize tube current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100333176A CN103260325A (en) | 2012-02-15 | 2012-02-15 | Power source device for dental machine grid-control cold cathode X-ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100333176A CN103260325A (en) | 2012-02-15 | 2012-02-15 | Power source device for dental machine grid-control cold cathode X-ray tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103260325A true CN103260325A (en) | 2013-08-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100333176A Pending CN103260325A (en) | 2012-02-15 | 2012-02-15 | Power source device for dental machine grid-control cold cathode X-ray tube |
Country Status (1)
| Country | Link |
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| CN (1) | CN103260325A (en) |
Cited By (5)
| 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 |
| CN104619103A (en) * | 2013-11-04 | 2015-05-13 | 台达电子工业股份有限公司 | X-ray tube power system and control method thereof |
| CN107924796A (en) * | 2015-06-30 | 2018-04-17 | 韩国威泰有限公司 | Portable X ray generating means with electric field transmitting X radiographic sources |
| CN111669884A (en) * | 2019-03-06 | 2020-09-15 | 北京艾立科技有限公司 | X-ray combined machine head |
| CN113438785A (en) * | 2021-06-18 | 2021-09-24 | 浙江国研智能电气有限公司 | Power supply for bulb tube filament of high-voltage X-ray machine |
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| JP2004335420A (en) * | 2003-05-12 | 2004-11-25 | Japan Science & Technology Agency | Fe type x-ray radiography system and method of manufacturing fe emitter used in the same |
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Patent Citations (6)
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| CN1535559A (en) * | 2001-08-29 | 2004-10-06 | 株式会社东芝 | X-ray generator |
| JP2004335420A (en) * | 2003-05-12 | 2004-11-25 | Japan Science & Technology Agency | Fe type x-ray radiography system and method of manufacturing fe emitter used in the same |
| CN101053007A (en) * | 2004-04-28 | 2007-10-10 | 株式会社爱发科 | Field emission display and method for controlling same |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104619103A (en) * | 2013-11-04 | 2015-05-13 | 台达电子工业股份有限公司 | X-ray tube power system and control method thereof |
| 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 |
| CN107924796A (en) * | 2015-06-30 | 2018-04-17 | 韩国威泰有限公司 | Portable X ray generating means with electric field transmitting X radiographic sources |
| CN107924796B (en) * | 2015-06-30 | 2020-06-30 | 韩国威泰有限公司 | Portable X-ray generating device with an electric field emission X-ray source |
| US10932734B2 (en) | 2015-06-30 | 2021-03-02 | Vatech Co., Ltd. | Portable x-ray generation device having electric field emission x-ray source |
| US10993679B2 (en) | 2015-06-30 | 2021-05-04 | Vatech Co., Ltd. | Portable x-ray generation device having electric field emission x-ray source |
| CN111669884A (en) * | 2019-03-06 | 2020-09-15 | 北京艾立科技有限公司 | X-ray combined machine head |
| CN113438785A (en) * | 2021-06-18 | 2021-09-24 | 浙江国研智能电气有限公司 | Power supply for bulb tube filament of high-voltage X-ray machine |
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Application publication date: 20130821 |