CN107666763A - A kind of X ray filament supply device based on laser power supply technology - Google Patents
A kind of X ray filament supply device based on laser power supply technology Download PDFInfo
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- CN107666763A CN107666763A CN201710857961.8A CN201710857961A CN107666763A CN 107666763 A CN107666763 A CN 107666763A CN 201710857961 A CN201710857961 A CN 201710857961A CN 107666763 A CN107666763 A CN 107666763A
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- laser
- module
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- power
- photoelectric conversion
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05G—X-RAY TECHNIQUE
- H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
- H05G1/08—Electrical details
- H05G1/10—Power supply arrangements for feeding the X-ray tube
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05G—X-RAY TECHNIQUE
- H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
- H05G1/08—Electrical details
- H05G1/26—Measuring, controlling or protecting
- H05G1/30—Controlling
- H05G1/32—Supply voltage of the X-ray apparatus or tube
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05G—X-RAY TECHNIQUE
- H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
- H05G1/08—Electrical details
- H05G1/26—Measuring, controlling or protecting
- H05G1/30—Controlling
- H05G1/34—Anode current, heater current or heater voltage of X-ray tube
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- X-Ray Techniques (AREA)
- Optical Communication System (AREA)
Abstract
The present invention relates to a kind of X ray filament supply device based on laser power supply technology, including host computer, laser emitting module, energy supply optical fiber, photoelectric conversion module, DC/DC power modules, measurement power module, filament voltage current measurement module, voltage measurement Transmission Fibers, current measurement Transmission Fibers, optic fiber transceiver module, CPLD modules, pressure-oil tank and filament；Photoelectric conversion module, DC/DC power modules, measurement power module, filament measurement module are placed in the pressure-oil tank, for realizing insulation, sealing and radiating；Photoelectric conversion module, DC/DC power modules, the addition fin for measuring power module, are fixed on pressure-oil tank side wall.The present invention is by the way of laser power supply, utilize the nonconducting characteristic of laser itself, energy supply optical fiber both ends are made not have direct electrical communication, realize electrical isolation, it is serious with electromagnetic interference to solve the problems, such as that insulation technology is difficult to, filament wattage is adjustable in the range of 0 20W, meets the use demand of X ray filament supply well.
Description
Technical field
The present invention relates to laser technology and its application field, more particularly to a kind of X ray lamp being used under high voltage environment
Silk supply unit.
Background technology
The X-ray tube used at present is generally thermoelectron X-ray tube.Its principle is that cathode filament is utilized in vacuum tube
The thermoelectron of transmitting forms the plate target that high-speed electron flow bombards opposite as electron source between two-stage under high voltage electric field effect
And produce X ray.When X-ray tube works, filament supply provides electric energy to filament heating.The anode and negative electrode of X-ray tube
Between pipe high pressure need DC high-voltage power supply to power, and filament supply is generally joined directly together with High voltage output, with high pressure
Power supply equipotential.
Current X-ray power supply is sent out towards trend such as miniaturization, digitlization, high frequency, high-power output, high voltage outputs
Exhibition.Along with these development trends, insulation volume, insulation costs and insulation difficulty greatly increase, and the requirement to insulation is tighter
Lattice.In existing X ray filament supply, using be all transformer isolation by the way of, the armature winding of filament transformer with
Low-voltage control circuit equipotential, its secondary windings and cathode high voltage equipotential.This insulation mode particularly exports in high voltage
In the case of grade, the insulating requirements between filament transformer primary and secondary are difficult to.
Laser power supply technology is fast-developing simultaneously, and starts to apply in the fields such as electric power, communication, industry.Laser power supply
System produces laser using laser emitting module, the carrier transmitted using energy supply optical fiber substitution traditional copper wire as energy, and adopts
Photovoltaic energy conversion is realized with photoelectric conversion module.Due to the nonconducting characteristic of optical fiber, it can be applicable to high voltage, strong electromagnetic is done
Disturb etc. under extreme environment.But the power of photoelectric conversion module in the prior art, is limited to, its power output is generally 0.3W
To 1W, it is impossible to meet the power requirement of X ray filament supply.
The content of the invention
The technology of the present invention solves problem：A kind of overcome the deficiencies in the prior art, there is provided X ray based on laser power supply technology
Filament supply device, it is not direct using the nonconducting characteristic of laser itself, energy supply optical fiber both ends by the way of laser power supply
Electrical communication, realize electrical isolation, insulation technology be difficult to electromagnetic interference it is serious the problem of, and electrical power is in 0-20W
It is adjustable in a wide range of, the power requirement of X ray filament supply is met well.
The present invention provides following technical scheme：A kind of X ray filament supply device based on laser power supply technology, including：
Host computer, first laser transmitter module, second laser transmitter module, first energy supply optical fiber, second energy supply optical fiber, CPLD modules,
First photoelectric conversion module, the second photoelectric conversion module, DC/DC power modules, measurement power module, filament voltage current measurement
Module, voltage measurement Transmission Fibers, current measurement Transmission Fibers, optic fiber transceiver module, pressure-oil tank and filament；First light
Electric modular converter, the second photoelectric conversion module, DC/DC power modules, measurement power module, filament voltage current measurement module are set
Put in the pressure-oil tank, for realizing insulation, sealing and radiating；First photoelectric conversion module, the second opto-electronic conversion
Module, DC/DC power modules, measurement power module add fin, are fixed on pressure-oil tank side wall；Host computer is responsible for control
Laser emitting module and the filament voltage current data of processing measurement；
Laser emitting module produces laser after switching on power, and by laser coupled into energy supply optical fiber.Two Laser emissions
The laser power of each spontaneous emission of module, laser is used for lamp by opto-electronic conversion wherein caused by first laser transmitter module
Silk power supply, the touch-screen that its size is carried by laser emitting module is directly set or host computer sends instruction and is adjusted, the
Laser caused by dual-laser transmitter module is used for powering to filament voltage current measurement module by opto-electronic conversion mould, first laser
Laser caused by transmitter module is transmitted to the first photoelectric conversion module by energizing optical fiber, and laser is converted to electric energy, then passes through
Exported after DC/DC power module voltage stabilizings, for being powered to filament；Laser is by energizing optical fiber caused by second laser transmitter module
Transmit to the second photoelectric conversion module, laser gives filament voltage electricity after being converted to electric energy, then measured power module voltage stabilizing
Flow measurement module is powered, and the voltage and current signal for measuring to obtain is transferred to optic fiber transceiver module respectively by optical fiber, and optical fiber connects
Receive module and convert optical signals into pulse duration frequency signal by after CPLD resume modules, sending the data to host computer, it is upper
Machine calculates watt level during filament work, judges the working condition of filament and sends instruction regulation according to filament working condition
The transmission power of first laser transmitter module, it is achieved thereby that the closed loop regulation of filament wattage.
The first laser transmitter module is direct semiconductor laser and its controls touch-screen accordingly, can produce number
Watt to tens of watts of levels (typically greater than 0, the laser less than 60W), laser output laser power size is direct by touch-screen
Set or host computer sends instruction adjustment, so as to meet in real work situation the needs of to different capacity；It is described directly partly to lead
The wave-length coverage of body laser is 915nm to 950nm.
The second laser transmitter module is semiconductor laser, can produce constant power (10W) laser；Described half
The wave-length coverage of conductor laser is 915nm to 950nm.
First laser transmitter module and second laser the transmitter module installation on a heat sink, while is positioned over band and had time
In the environment of tune, ensure that laser works in optimum state, increase the life-span of semiconductor laser, improve reliability.
The energy supply optical fiber requires that optical fiber answers soft pliable bent, can control direction of beam propagation, and have higher transmission efficiency
With relatively low transmission loss, while energy stabilization is exported.
First photoelectric conversion module and the second photoelectric conversion module form by photovoltaic cell, by series, parallel,
Series-parallel mode is arranged in parallel bypass to meet to powerful demand in each photovoltaic cell component positive and negative end
Diode, reduce the influence that indivedual photovoltaic cell failures are brought；The photovoltaic cell is gallium arsenide cells or indium gallium arsenic battery.
First photoelectric conversion module and the second photoelectric conversion module are immersed in insulating oil, utilize insulating oil insulating properties
While, can further it radiate.
The DC/DC power modules be efficiency more than 90%, ripple be less than 50mV Switching Power Supply.
The filament voltage current measurement module includes voltage to frequency converter and fiber optic transmitter, and fiber optic transmitter is by electricity
Signal is converted into optical signal, and optical signal transmits in a fiber, and wherein optical signal passes in voltage measurement Transmission Fibers and current measurement
Lose individual transmission in fibre.
The measurement power module is linear stabilized power supply, 5V is supplied to related inside filament voltage current measurement module
Device uses.
The filament is made of tungsten filament, and thermoelectron can be launched after energization, and the filament resistance size is no more than 1 Ω.
The present invention compared with prior art the advantages of be：
(1) present invention is the X ray filament supply device based on laser power supply mode, for filament transformation in the prior art
The problems such as device insulation technology is difficult to, electromagnetic interference is serious, the mode of laser power supply is employed, it is non-conductive using laser itself
Characteristic, energy supply optical fiber both ends do not have direct electrical communication, realize electrical isolation, be difficult to so as to solve insulation technology
With electromagnetic interference it is serious the problem of.
(2) present invention is the X ray filament supply device based on laser power supply mode, for laser power supply in the prior art
Power output is 0.3W to 1W, is not enough to provide to filament supply and matches power, the problem of can be only applied to small-power occasion,
A kind of electromotive power output adjustable laser energy supply device in 0-20W is a wide range of is provided, it is steady that it is mainly characterized by output voltage
Fixed, output current is adjustable.A kind of new paragon to the power supply of pressure-oil tank internal electronic device is provided simultaneously.
(3) there is good temperature characterisitic, it is achieved thereby that light by the way of the radiating of fin filler tank in the present invention
Electric modular converter photoelectric transformation efficiency is higher (30% to 50%), ensure that the operation that apparatus of the present invention are lasting, stable.
The present invention, using the nonconducting characteristic of laser itself, does not have energy supply optical fiber both ends by the way of laser power supply
Direct electrical communication, realizes electrical isolation, and it is serious with electromagnetic interference to solve the problems, such as that insulation technology is difficult to, and filament
Power is adjustable in the range of 0-20W, meets the use demand of X ray filament supply well.
Brief description of the drawings
Fig. 1 is X-ray emission structural representation；
Fig. 2 is the overall structure figure of the present invention；
Label declaration：1-filament supply, 2-filament, 3-grid, 4-high voltage power supply, 5-anode, 6-focus coil,
7-target, 8-host computer, 9-first laser transmitter module, 9 '-second laser transmitter module, 10-the first energy supply optical fiber,
10 '-the second energy supply optical fiber, the 11-the first photoelectric conversion module, the 11 '-the second photoelectric conversion module, 12-DC/DC power supply moulds
Block, 13-measurement power module, 14-filament voltage current measurement module, 15-voltage measurement Transmission Fibers, 16-electric current are surveyed
Measure Transmission Fibers, 17-optic fiber transceiver module, 18-CPLD modules, 19-pressure-oil tank.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples, and following examples are to the present invention
Explain the invention is not limited in following instance, but the scope of the present invention can not be limited.
As shown in figure 1, X-ray emission process, target 7 is made of refractory metal (generally Fe or Cu).Filament supply 1
Heat filament 2 after energization, filament can launch thermoelectron, while caused by the high voltage power supply 4 lied prostrate with tens of thousands of volts to hundreds of thousands accelerates
Electronics, electron beam just bombard target 7, and electronics is lost kinetic energy and radiated in the form of photon, and X ray is just sent from target.Lamp simultaneously
Silk power supply 1 needs to float in high voltage power supply 4.Filament supply 1 is the laser power supply X ray filament supply device using the present invention.
As shown in Fig. 2 the laser power supply X ray filament supply device of the present invention includes：Host computer 8, first laser transmitting
Module 9, second laser transmitter module 9 ', first energize optical fiber 10, second energize optical fiber 10 ', the first photoelectric conversion module 11,
DC/DC power modules 12, measurement power module 13, filament voltage current measurement module 14, voltage measurement Transmission Fibers 15, electric current
Measure Transmission Fibers 16, optic fiber transceiver module 17, CPLD modules 18, pressure-oil tank 19 and filament 2.Wherein the first opto-electronic conversion mould
Block 11, DC/DC power modules 12, measurement power module 13, filament voltage current measurement module 14 are placed in pressure-oil tank 19.
In the embodiment of the present invention, host computer 8 is the computer that can send control instruction, and it is the core mould of whole device
Block, main function are when adjusting the watt level of laser emitting module and the data of processing CPLD transmission and calculating filament work
Watt level.
In the embodiment of the present invention, first laser transmitter module 9 uses direct semiconductor laser, can be produced after switching on power
Raw wavelength is 910nm-950nm laser, and by laser coupled into the first energy supply optical fiber 10.Semiconductor laser can produce 0-
60W laser, it exports laser power and can sent out by the direct setting on the touch-screen of laser emitting module and by host computer
Instruction two ways is sent to be adjusted, so as to meet in real work situation the needs of to different capacity.Suitable fin energy
Increase the life-span of tuneable semiconductor laser, by tuneable semiconductor laser installation on a heat sink, and place it in and carry
In the environment of air-conditioning, further increase reliability.
In the embodiment of the present invention, second laser transmitter module 9 ' is identical with the operation principle of first laser transmitter module 9, only
It is that caused laser power is fixed as 10W.
In the embodiment of the present invention, the first energy supply optical fiber 10 and second energizes optical fiber 10 ' and is different from being used to transmit optical signalling
Communication optical fiber, it substitutes the carrier that transmit as energy of copper cash, respectively by peak power output for 60W high energy laser with
Power output is that 10W laser transports to the first photoelectric conversion module 11 and the second photoelectric conversion module 11 '.
In the embodiment of the present invention, pressure-oil tank 19 is X ray high pressure voltage multiplying rectifier fuel tank, is full of insulating oil in fuel tank.By
It is high to the insulation voltage grade and cooling requirements of insulating oil in apparatus of the present invention.Therefore use the Kunlun transformer oil KI45X, KI45X
Transformer oil be the naphthenic base oils using special process production as raw material, add what the modulation of high-quality antioxygen compound additive formed
High-level transformer oil.Properties of product are reliable and stable, have the characteristics that the rapid, excellent electric properties that conduct heat.
In the embodiment of the present invention, the first photoelectric conversion module 11 and the second photoelectric conversion module 11 ' are made up of photocell, can
By by series, parallel, it is series-parallel in a manner of meet to powerful demand, while in each photovoltaic cell component both positive and negative polarity
Both ends are in parallel to place bypass diode, when hot spot effect, which occurs, in battery component to generate electricity, can play bypass, makes whole
Photoelectric conversion module works on, and reduces the influence that indivedual photocell failures are brought.
At work, the first photoelectric conversion module 11 and the second photoelectric conversion module 11 ' will produce substantial amounts of heat, and it is changed
Efficiency can decline with the rise of temperature, thus ensure photoelectric conversion module be operated under stable and relatively lower temp be to
Close important.By the first photoelectric conversion module 11 and the bottom of the second photoelectric conversion module 11 ' addition aluminum thermal fin, height is fixed on
Press fuel tank sidewall；And immerse the first photoelectric conversion module 11 and the second photoelectric conversion module 11 ' in insulating oil, utilize insulating oil
While insulating properties, the purpose of radiating can also be played.
First photoelectric conversion module 11 and the second photoelectric conversion module 11 ' are suitable to receive swashing in the range of 910nm to 950nm
Light, operating temperature are 25-30 DEG C of room temperature, and photoelectric transformation efficiency transformation efficiency may be up to 30% to 50%.
In the embodiment of the present invention, DC/DC power modules 12 use efficiency value for more than 90% Switching Power Supply.Because photoelectricity
Modular converter 11 has the characteristic of photovoltaic cell, that is, the voltage and current exported can change with the resistance of load.Filament
Resistance can change during work, in order to meet that the regulation of the saturation point of filament emission current and the continuous of filament operating current can
Adjust, at the same ensure output voltage under operating conditions have high accuracy, therefore using when behind need add DC/DC power modules
12.Simultaneously under power output certain condition, DC/DC power modules 12 are lost that smaller temperature rise is lower, and the life-span is longer, it is desirable to the greatest extent may be used
The DC/DC power modules of efficiency high can be used.
In the embodiment of the present invention, measurement power module uses linear stabilized power supply, the output warp of the second photoelectric conversion module
Cross it is stable in 5V after voltage stabilizing, for giving pressure-oil tank internal electronic device, particularly inside filament voltage current measurement module
Related device is powered.
In the embodiment of the present invention, filament voltage current measurement module 14 measures filament work using the method for voltage to frequency convert
The measurement of voltage and current when making, wherein heater current is by measuring the voltage swing of resistance in current loop come indirectly real
Existing.This method is that voltage signal is sent into high-precision voltage to frequency converter part so as to be transformed into pulse duration frequency signal, then
Pulse duration frequency signal is become into light pulse by the conversion of fiber optic transmitter, light pulse signal transmits in optical fiber.Here it is sharp
With voltage to frequency converter part high linearity, wide bandwidth, without dead band the advantages of.Wherein voltage measurement Transmission Fibers 15 and electric current
Measure the respective individual transmission optical signal all the way of Transmission Fibers 16.Optic fiber transceiver module 17 converts optical signals into pulse frequency letter
Number, last CPLD modules 18 send the data to host computer 8 by processing calculating, so as to obtain corresponding filament voltage and electric current work
Size when making, and then calculate watt level when filament works.
In the embodiment of the present invention, filament 2 is made up of tungsten filament, and for producing transmitting thermoelectron, general size is no more than 1
Ω.Electron beam accelerates bombardment target by high voltage power supply, so as to produce X ray.
Above example is provided just for the sake of the description purpose of the present invention, and is not intended to limit the scope of the present invention.This
The scope of invention is defined by the following claims.The various equivalent substitutions that do not depart from spirit and principles of the present invention and make and repair
Change, all should cover within the scope of the present invention.
Claims (11)
- A kind of 1. X ray filament supply device based on laser power supply technology, it is characterised in that：Including host computer, first laser Transmitter module, second laser transmitter module, the first energy supply optical fiber, the second energy supply optical fiber, CPLD modules, the first opto-electronic conversion mould Block, the second photoelectric conversion module, DC/DC power modules, measurement power module, filament voltage current measurement module, voltage measurement Transmission Fibers, current measurement Transmission Fibers, optic fiber transceiver module, pressure-oil tank and filament；First photoelectric conversion module, Two photoelectric conversion modules, DC/DC power modules, measurement power module, filament voltage current measurement module are arranged on the high pressure In fuel tank, for realizing insulation, sealing and radiating；First photoelectric conversion module, the second photoelectric conversion module, DC/DC electricity Source module, measurement power module add fin, are fixed on pressure-oil tank side wall；Host computer is responsible for controlling laser emitting module With the filament voltage current data of processing measurement；Laser emitting module produces laser after switching on power, and by laser coupled into energy supply optical fiber；Two laser emitting modules The laser power of each spontaneous emission, laser is used for supplying to filament by opto-electronic conversion wherein caused by first laser transmitter module Electricity, the touch-screen that its size is carried by laser emitting module is directly set or host computer sends instruction and is adjusted, and second swashs Laser caused by light emission module is used for powering to filament voltage current measurement module by opto-electronic conversion mould；First laser is launched Laser caused by module is transmitted to the first photoelectric conversion module by energizing optical fiber, and laser is converted to electric energy, then by DC/DC Exported after power module voltage stabilizing, for being powered to filament；Laser caused by second laser transmitter module is transmitted by energizing optical fiber To the second photoelectric conversion module, laser is surveyed after being converted to electric energy, then measured power module voltage stabilizing to filament voltage electric current Module for power supply is measured, the voltage and current signal that filament voltage current measurement module measurement obtains is transferred to optical fiber respectively by optical fiber Receiving module, optic fiber transceiver module convert optical signals into pulse duration frequency signal by after CPLD resume modules, data are sent out Host computer is given, host computer calculates watt level during filament work, judges the working condition of filament and worked according to filament Situation sends the transmission power of instruction regulation first laser transmitter module, it is achieved thereby that the closed loop regulation of filament wattage.
- 2. the X ray filament supply device according to claim 1 based on laser power supply technology, it is characterised in that：It is described First laser transmitter module is direct semiconductor laser and its controls touch-screen accordingly, can produce several watts to tens of watts Level, laser output laser power size is directly set by touch-screen or host computer sends instruction adjustment, so as to meet reality To the demand of different capacity in working condition；The wave-length coverage of the direct semiconductor laser is 915nm to 950nm.
- 3. the X ray filament supply device according to claim 1 based on laser power supply technology, it is characterised in that：It is described Second laser transmitter module is semiconductor laser, can produce the laser of constant power；The wavelength of the semiconductor laser Scope is 915nm to 950nm.
- 4. the X ray filament supply device according to claim 2 based on laser power supply technology, it is characterised in that：It is described First laser transmitter module and the installation of second laser transmitter module on a heat sink, while are positioned over in air-conditioned environment, Ensure that laser works in optimum state, increase the life-span of semiconductor laser, improve reliability.
- 5. the X ray filament supply device according to claim 1 based on laser power supply technology, it is characterised in that：It is described Energy supply optical fiber requires that optical fiber answers soft pliable bent, can control direction of beam propagation, and has higher transmission efficiency and damaged compared with low transmission Consumption, while export energy stabilization.
- 6. the X ray filament supply device according to claim 1 based on laser power supply technology, it is characterised in that：It is described First photoelectric conversion module and the second photoelectric conversion module form by photovoltaic cell, pass through series, parallel, series-parallel mode To meet to powerful demand, while bypass diode is arranged in parallel in each photovoltaic cell component positive and negative end, reduced The influence that indivedual photovoltaic cell failures are brought；The photovoltaic cell is gallium arsenide cells or indium gallium arsenic battery.
- 7. the X ray filament supply device according to claim 1 based on laser power supply technology, it is characterised in that：It is described First photoelectric conversion module and the second photoelectric conversion module are immersed in insulating oil, can while using insulating oil insulating properties Further radiating.
- 8. the X ray filament supply device according to claim 1 based on laser power supply technology, it is characterised in that：It is described DC/DC power modules be efficiency more than 90%, ripple be less than 50mV Switching Power Supply.
- 9. the X ray filament supply device according to claim 1 based on laser power supply technology, it is characterised in that：It is described Filament voltage current measurement module includes voltage to frequency converter and fiber optic transmitter, and fiber optic transmitter converts the electrical signal to light Signal, optical signal transmit in a fiber, and wherein optical signal is independent in voltage measurement Transmission Fibers and current measurement Transmission Fibers Transmission.
- 10. the X ray filament supply device according to claim 1 based on laser power supply technology, it is characterised in that：It is described Measurement power module is linear stabilized power supply, is supplied to related device inside filament voltage current measurement module to use 5V.
- 11. the X ray filament supply device according to claim 1 based on laser power supply technology, it is characterised in that：It is described Filament is made of tungsten filament, and thermoelectron can be launched after energization, and the filament resistance size is no more than 1 Ω.
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| CN201710857961.8A CN107666763B (en) | 2017-09-21 | 2017-09-21 | A kind of X-ray filament supply device based on laser power supply technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113410916A (en) * | 2021-08-20 | 2021-09-17 | 成都金迈微科技有限公司 | Monitoring system and method for photovoltaic power converter in optical fiber power supply system |
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| JP4273572B2 (en) * | 1999-05-25 | 2009-06-03 | 株式会社ニコン | X-ray generator, X-ray exposure apparatus having the same, and X-ray generation method |
| JP2010199292A (en) * | 2009-02-25 | 2010-09-09 | Japan Atomic Energy Agency | X-ray laser generating method and x-ray laser generating apparatus, and target |
| CN102841365A (en) * | 2012-09-13 | 2012-12-26 | 电子科技大学 | Method for calibrating maximum linear output current of fast-response X-ray detector |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4273572B2 (en) * | 1999-05-25 | 2009-06-03 | 株式会社ニコン | X-ray generator, X-ray exposure apparatus having the same, and X-ray generation method |
| EP1650546A1 (en) * | 2004-10-22 | 2006-04-26 | Keymaster Technologies, Inc. | Method and apparatus for identifying, analyzing and authenticating objects, including chemicals, using multiple spectroscopic techniques |
| JP2010199292A (en) * | 2009-02-25 | 2010-09-09 | Japan Atomic Energy Agency | X-ray laser generating method and x-ray laser generating apparatus, and target |
| CN102841365A (en) * | 2012-09-13 | 2012-12-26 | 电子科技大学 | Method for calibrating maximum linear output current of fast-response X-ray detector |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113410916A (en) * | 2021-08-20 | 2021-09-17 | 成都金迈微科技有限公司 | Monitoring system and method for photovoltaic power converter in optical fiber power supply system |
| CN113410916B (en) * | 2021-08-20 | 2021-11-02 | 成都金迈微科技有限公司 | Monitoring system and method for photovoltaic power converter in optical fiber power supply system |
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