CN105043419B - A kind of X-ray pulsar navigation sensor on-orbit calibration radiographic source - Google Patents
A kind of X-ray pulsar navigation sensor on-orbit calibration radiographic source Download PDFInfo
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- CN105043419B CN105043419B CN201510472466.6A CN201510472466A CN105043419B CN 105043419 B CN105043419 B CN 105043419B CN 201510472466 A CN201510472466 A CN 201510472466A CN 105043419 B CN105043419 B CN 105043419B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C25/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
Abstract
A kind of X-ray pulsar navigation sensor on-orbit calibration radiographic source, including modulation of X-ray source, collimater, X-ray detector, elevating mechanism, control and process circuit.The modulation of X-ray source is made up of low-voltage grid-control multiline X-ray tube and high voltage power supply, and excitation voltage is low, while can excite multiple features spectral line, and grid control signal is adjustable.The collimater is made up of electronic diaphragm and rotation pole socket, and X ray beam diameter can be adjusted.The X-ray detector realizes the demarcation to sensor detection efficient and radiation background with elevating mechanism.X-ray pulsar navigation sensor on-orbit calibration radiographic source of the present invention is full-featured, strong adaptability, it can be achieved to X-ray pulsar power spectrum, the simulation of flow, signal waveform, the characteristic parameters such as the characteristic of energy response of sensor, detection efficient, background flow can be demarcated simultaneously, and are also equipped with the ability of sensor electronic system functional verification.
Description
Technical field
It is particularly a kind of in-orbit for X-ray pulsar navigation sensor the present invention relates to a kind of on-orbit calibration radiographic source
X-ray source is demarcated, for realizing sensor on-orbit calibration in X-ray pulsar navigation task, belongs to space optics technology neck
Domain.
Background technology
X-ray pulsar navigation sensor is surveyed using characteristic of the X-ray pulsar transmitting with pulse signal stable period
Amount and the obtained pulse signal of forecast reach the time difference calculation position correcting value of solar system barycenter, so as to Space Vehicle position and
Speed is estimated.X-ray pulsar navigation is applied to the entirely autonomous of terrestrial space, survey of deep space and space flight spacecraft
Navigation, has extremely important engineering practical value and strategic research meaning.
After the transmitting of X-ray pulsar navigation sensor is entered the orbit, function, the performance indications of sensor are in emission process and long
It will be changed under phase severe space environment.If carrying out on-orbit calibration to it not in time, it will cause sensor observed result can not
Letter even loses observing capacity.Therefore realization of the on-orbit calibration of sensor for the in-orbit functional performance of sensor has important meaning
Justice.To realize the on-orbit calibration of sensor, core is to develop on-orbit calibration radiographic source.
The on-orbit calibration radiographic source of traditional space X ray optics load is typically using with the radioactivity for stablizing half-life period
X ray radioactive source is made in element, and transmitting has the x-ray photon of characteristic spectral line, for demarcating the characteristic of energy response of sensor,
The function of its on-orbit calibration is single.And it is quick except requiring to demarcate to be used for the radiographic source of X-ray pulsar navigation sensor on-orbit calibration
Outside sensor characteristic of energy response, also requirement can demarcate the detection efficient of sensor, background flow, verify sensor electronic system
Function.Therefore, traditional on-orbit calibration radiographic source based on radioactive source can not meet the in-orbit mark of X-ray pulsar navigation sensor
Fixed demand.
The content of the invention
Present invention solves the technical problem that it is：Overcome the above-mentioned deficiency of prior art, there is provided a kind of X-ray pulsar navigation
Sensor on-orbit calibration radiographic source, it is real using modulation of X-ray pipe, collimater, X-ray detector, each building block of elevating mechanism
Now to X-ray pulsar power spectrum, the simulation of flow, signal waveform, the characteristic of energy response of sensor can be demarcated simultaneously, detection is imitated
The characteristic parameters such as rate, background flow, and the ability of sensor electronic system functional verification is also equipped with, meet to the full extent
The demand of sensor on-orbit calibration in X-ray pulsar navigation task.
The technical scheme is that：A kind of X-ray pulsar navigation sensor on-orbit calibration radiographic source,：Including installation
Pedestal, modulation of X-ray pipe, ray pipe holder, high voltage power supply, collimater, control and process circuit, X-ray detector and lifting
Mechanism；
The modulation of X-ray pipe is fixed in installation pedestal by ray pipe holder；The X-ray detector, which is arranged on, to be risen
On descending mechanism, elevating mechanism is fixedly mounted in installation pedestal, and the collimater is fixedly mounted in installation pedestal, and positioned at tune
Between X-ray tube processed and X-ray detector；X-ray detector is realized using elevating mechanism and moved up and down, and is removed or is moved into by institute
State the X ray light path of modulation of X-ray pipe and collimater formation；
The high voltage power supply provides X ray excited required high voltage, the control and process circuit for modulation of X-ray pipe
Grid modulation signal is provided for modulation of X-ray pipe, collimater and elevating mechanism action is controlled, detects and record X-ray detector
The x-ray photon signal detected.
The ray tube anode of the modulation of X-ray pipe is the doping anode that multiple element is formed, for launching a plurality of feature
Spectral line, the multiple element include aluminium, potassium, titanium, manganese, iron, nickel, copper, zinc, molybdenum.
The collimater includes bottom plate, the first turnbarrel, the second turnbarrel, the first lock-screw, the second locking screw
Nail, extension bar, diaphragm drive mechanism, micromachine and adjustable diaphragm；
Collimater realizes and is fixedly connected with installation pedestal that the first turnbarrel is fixedly mounted on bottom plate using bottom plate,
Second turnbarrel is sleeved on the first turnbarrel, and adjustable diaphragm is fixedly mounted in diaphragm drive mechanism；
Extension bar one end is connected with diaphragm drive mechanism, and the other end is locked after inserting the second turnbarrel by the second lock-screw
Tightly, the regulation of adjustable diaphragm height is realized；
First turnbarrel and the second turnbarrel drive diaphragm drive mechanism to rotate by relative rotary motion, so as to band
Dynamic adjustable diaphragm is rotated, and after positioning, is locked between the first turnbarrel and the second turnbarrel by the first lock-screw,
Realize the regulation of adjustable diaphragm angle；
The diaphragm opening diameter of adjustable diaphragm is adjusted micromachine control diaphragm drive mechanism.
The elevating mechanism includes L-square, luggage carrier and motorized precision translation stage；
The elevating mechanism is fixed in installation pedestal by L-square, and the motorized precision translation stage is arranged on L-square, X
Ray detector is fixedly connected by luggage carrier with motorized precision translation stage, and follows motorized precision translation stage perpendicular to installation pedestal direction
Upper motion.
The high voltage power supply includes high-tension circuit, heater chain and control circuit, and high-tension circuit provides for modulation of X-ray pipe
X ray excited required voltage, heater chain provide heater current for modulation of X-ray pipe, and control circuit is to modulating X-ray tube pipe
Voltage and heater current are adjusted.
The control and process circuit include any signal and circuit, collimater control circuit, elevating mechanism drive occur
Dynamic circuit and X-ray detector signal processing circuit；
Any signal occurs circuit and provides grid modulation signal for modulation of X-ray pipe；Collimater control circuit
The micromachine in collimater is controlled, the diameter of adjustable diaphragm is changed；Elevating mechanism drive circuit drives and controls liter
The up and down motion of descending mechanism；X-ray detector signal processing circuit detects and recorded the X ray light that X-ray detector detects
Subsignal.
The X-ray detector is silicon photodiode detector.
The voltage of the modulation of X-ray X ray excited by tube voltage is 4-10kV, and ray tube energy spectrum is 1-10keV, hair
X-ray range of flow is penetrated as 0.1~106ph/cm2/s。
The collimater aperture is directed at installation with the modulation of X-ray pipe optical axis.
During the X ray light path that the X-ray detector immigration modulation of X-ray pipe and collimater are formed, X-ray tube, collimation
Device, X-ray detector form common optical axis；During the X ray light path that X-ray detector removal modulation of X-ray pipe and collimater are formed,
The X ray light path that X-ray detector avoids defining X-ray tube and collimater, which is formed, to be stopped.
The beneficial effect of the present invention compared with prior art is：
The present invention devises the variable standard detector of detecting location that elevating mechanism and X-ray detector combine, works as mark
During quasi- detector alignment on-orbit calibration radiographic source transmitting light path, for demarcating the detection efficient of sensor；When standard detector moves
When going out the transmitting light path of on-orbit calibration radiographic source, for demarcating the space radiation background flow under the in-orbit environment of sensor, design
With multipurpose.
Brief description of the drawings
Fig. 1 is X-ray pulsar navigation sensor on-orbit calibration radiographic source schematic diagram of the present invention；
Fig. 2 is X-ray pulsar navigation sensor on-orbit calibration radiographic source collimater schematic diagram of the present invention；
Fig. 3 is that X-ray pulsar navigation sensor on-orbit calibration radiographic source standard detector of the present invention and elevating mechanism show
It is intended to.
Embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings：
As shown in figure 1, the present invention proposes a kind of X-ray pulsar navigation sensor on-orbit calibration radiographic source, including installation
Pedestal 1, modulation of X-ray pipe 2, ray pipe holder 3, high voltage power supply 4, collimater 5, control and process circuit 6, X-ray detector
7th, elevating mechanism 8；
The modulation of X-ray pipe 2 is fixed in installation pedestal 1 by ray pipe holder 3；The X-ray detector 7 is installed
On elevating mechanism 8, elevating mechanism 8 is fixedly mounted in installation pedestal 1, and the collimater 5 is fixedly mounted on installation pedestal 1
On, and between modulation of X-ray pipe 2 and X-ray detector 7；X-ray detector 7 is realized using elevating mechanism 8 and moved down
It is dynamic, remove or move into the X ray light path formed by the modulation of X-ray pipe 2 and collimater 5；X-ray detector 7 moves into modulation X
During the X ray light path that ray tube 2 and collimater 5 are formed, X-ray tube 2, collimater 5, X-ray detector 7 form common optical axis；X is penetrated
During the X ray light path that the removal modulation of X-ray of line detector 7 pipe 2 and collimater 5 are formed, X-ray detector 7 is avoided to X-ray tube
2 and collimater 5 define X ray light path formed stop.
The high voltage power supply 4 is that modulation of X-ray pipe 2 provides X ray excited required high voltage, control and the processing electricity
Road 6 is that modulation of X-ray pipe 2 provides grid modulation signal, controls collimater 5 and elevating mechanism 8 to act, detects and record X ray
The x-ray photon signal that detector 7 detects.
The high voltage power supply 4 is between ray pipe holder 3 and collimater 5, and the control and process circuit 6 are positioned at collimation
Between device 5 and elevating mechanism 8.
The electronic adjustable diaphragm of use and rotation pole socket of the invention constitute automatically controlled x-ray collimator to X ray
Beam diameter is adjusted, and realizes the regulation to X-ray beam collimation, can meet the X-ray pulsar of various different visual fields
Requirement of the navigation sensor to X ray collimation；As shown in Fig. 2 collimater 5 includes bottom plate 9, the first turnbarrel 10, second
Turnbarrel 12, the first lock-screw 11, the second lock-screw 13, extension bar 14, diaphragm drive mechanism 15, micromachine 16 and can
Light modulation door screen 17；
Collimater 5 realizes and is fixedly connected with installation pedestal 1 that collimater 5 or so and front and rear installation site are sharp using bottom plate 9
It is adjusted with bottom plate 9, the first turnbarrel 10 is fixedly mounted on bottom plate 9, and the second turnbarrel 12 is sleeved on the first rotation
On sleeve 10, adjustable diaphragm 17 is fixedly mounted in diaphragm drive mechanism 15；
The one end of extension bar 14 is connected with diaphragm drive mechanism 15, and the other end is inserted after the second turnbarrel 12 by the second locking
Screw 13 is locked, and realizes the regulation of the height of adjustable diaphragm 17；
First turnbarrel 10 and the second turnbarrel 12 drive diaphragm drive mechanism 15 to rotate by relative rotary motion,
So as to drive adjustable diaphragm 17 to be rotated, after positioning, pass through first between the first turnbarrel 10 and the second turnbarrel 12
Lock-screw 11 is locked, and realizes the regulation of the angle of adjustable diaphragm 17；
Micromachine 16 controls diaphragm drive mechanism 15 that the diaphragm opening diameter of adjustable diaphragm 17 is adjusted.So as to accurate
Any regulation can be achieved in the straight aperture direction of device 5, top to bottom, left and right, front and rear position.
As shown in figure 3, elevating mechanism 8 includes L-square 18, luggage carrier 19 and motorized precision translation stage 20；
The elevating mechanism 8 is fixed in installation pedestal by L-square 18, and the motorized precision translation stage 20 is arranged on right angle
On plate 18, X-ray detector 7 is fixedly connected by luggage carrier 19 with motorized precision translation stage 20, and follows motorized precision translation stage 20 hanging down
Directly moved on the direction of installation pedestal 1.The elevating mechanism 8 is the spacing electrical-controlled lifting mechanism in both ends, and elevating mechanism 8 can penetrate X
Line detector 7 is respectively placed in high and low position.A high position be designed as when X-ray detector 7 be installed on elevating mechanism 8 it is high-order when, standard
Detector center is aligned with X ray optical axis defined above.Low level is designed as when X-ray detector 7 is placed in 8 elevating mechanism low levels
When, detector is not formed to X-ray beam to be stopped.
The modulation of X-ray pipe 2 for doping anode grid-control side window type X-ray tube, body for cylindrical shape, using stainless steel outside
Lining with lead in shell.It is provided with X-ray radiation window in the middle part of side, design and installation flange at window, for being installed with ray pipe holder.Swash
The pressure that generates electricity is 4-10kV；Ray tube anode is multiple element (including aluminium (Al), potassium (K), titanium (Ti), manganese (Mn), iron (Fe), nickel
(Ni), copper (Cu), zinc (Zn), molybdenum (Mo)) form doping anode, a plurality of characteristic spectral line can be launched；It is control between anode and cathode
Grid, control electric signal can be applied on the control gate radiographic source output x-ray photon flow is modulated.Present invention innovation
Devise the on-orbit calibration x-ray source based on doping anode grid-controlled X-ray tube.The radiographic source possesses in 1-10keV energy spectrums
Multiple features spectral line, X-ray subflow amount and signal transmitted waveform are any adjustable.It can realize that pulsar navigation is quick using multiple features spectral line
The on-orbit calibration of sensor characteristic of energy response, the demarcation of sensor detection efficient can be achieved using any adjustable X-ray subflow amount,
The validating in orbit to pulsar navigation sensor electronic system function can be realized using any adjustable signal transmitted waveform；
The ray pipe holder 3 is L-type L-square, and bottom surface is fixed with installation pedestal 1, side mounting hole and modulation of X-ray
The radiation window mounting flange of pipe 2 connects, and material is aluminium.
The high voltage power supply 4 is cuboid modular construction, and sheathing material is aluminium, passes through the mounting feet of bottom surface four and peace
Fill pedestal 1 and simultaneously good earth is fixedly mounted.
The high voltage power supply 4 includes high-tension circuit, heater chain and control circuit, and high-tension circuit is that modulation of X-ray pipe 2 carries
For X ray excited required high voltage, heater chain is that modulation of X-ray pipe 2 provides heater current, and control circuit is penetrated to modulation X
The tube voltage of spool 2 and heater current are adjusted.
The present invention devises control and the process circuit of centralization, utilizes high integration case type circuit realiration on-orbit calibration
The various functions such as the control of radiographic source ray emission, collimation control, displacement mechanism driving and signal transacting.The circuit level is high,
Small volume, full-featured, the control and process circuit 6 are cuboid modular chassis structure, and sheathing material is aluminium, passes through bottom
Four, face mounting feet is fixedly mounted with installation pedestal 1 and good earth.
The control and process circuit 6 include any signal and circuit, collimater control circuit, elevating mechanism drive occur
Dynamic circuit and X-ray detector signal processing circuit.It is that modulation of X-ray pipe 2 provides grid tune that circuit, which occurs, for any signal
Signal processed；Micromachine 16 in collimater control circuit control collimater 5, is controlled to the diameter of adjustable diaphragm 17；Lifting
Mechanism drive circuit drives and controls the up and down motion of elevating mechanism 8；X-ray detector signal processing circuit detects and records X
The x-ray photon signal that ray detector 7 detects.
The diaphragm flap of material of collimater 5 is copper, to avoid X ray from penetrating；The work of the collimater 5, elevating mechanism 8
Dynamic component lubriation material is vacuum grease, and lubriation material volatilization pollution X-ray pulsar navigation is quick during avoiding in-orbit application
Sensor optical system and detector.
The X-ray detector 7 is silicon photodiode detector, as the standard detector in on-orbit calibration.
During on-orbit calibration, the diaphragm diameter of collimater 5 is adjusted first, is obtained and X-ray pulsar navigation sensor visual field phase
The X-ray beam of matching.Secondly X-ray detector 7 is placed in the high position of elevating mechanism 8, by the center of X-ray detector 7 and modulation X
The X ray light path alignment that ray tube 2 and collimater 5 define.Using X-ray detector 7 measure X-ray beam photon flow,
The characteristic parameters such as power spectrum.Then X-ray detector 7 is placed in the low level of elevating mechanism 8, makes it not to modulation X-ray tube 2 and collimation
The X ray light path that device 5 defines, which is formed, to be stopped so that X-ray beam enters X-ray pulsar navigation sensor visual field.Now X is penetrated
Line detector 7 has demarcated space X ray background flow.By comparing X-ray pulsar navigation sensor and X-ray detector 7
To the result of detection of same X-ray beam, characteristic of energy response, detection efficient to X-ray pulsar navigation sensor are carried out
Demarcation.Modulation of X-ray source 2 is controlled to launch X ray characteristic pulse signal by high voltage power supply 4, can be quick to X-ray pulsar navigation
Sensor electronic system carries out functional verification.
In summary, X-ray pulsar navigation sensor on-orbit calibration radiographic source X-ray beam power spectrum of the present invention,
The Parameter adjustables such as flow, collimation, signal waveform, strong adaptability is full-featured, can be achieved to X-ray pulsar power spectrum, stream
Amount, the simulation of signal waveform, the characteristic parameters such as the characteristic of energy response of sensor, detection efficient, background flow can be demarcated simultaneously,
And it is also equipped with the ability of sensor electronic system functional verification.
Embodiment
X-ray detector described in X-ray pulsar navigation sensor on-orbit calibration radiographic source of the present invention is silicon photoelectricity two
Pole pipe X-ray detector, X ray excited voltage 4-10kV, ray tube energy spectrum are 1-10keV, launch X-ray range of flow
For 0.1~106ph/cm2/s.Modulation of X-ray pipe 2, collimater 5, the alignment installation of the optical axis of X-ray detector 7, spacing 200mm.It is accurate
The aperture 0.2-5mm of adjustable diaphragm 17 is adjustable in straight device 5, and 0.12 ° -2.86 ° of X ray beam divergence angle is adjustable.The row of motorized precision translation stage 21
Journey 80mm, resolution ratio 0.05mm.
The content not being described in detail in description of the invention belongs to the known technology of those skilled in the art.
Claims (9)
- A kind of 1. X-ray pulsar navigation sensor on-orbit calibration radiographic source, it is characterised in that：Including installation pedestal (1), modulation X-ray tube (2), ray pipe holder (3), high voltage power supply (4), collimater (5), control and process circuit (6), X-ray detector And elevating mechanism (8) (7)；The modulation of X-ray pipe (2) is fixed in installation pedestal (1) by ray pipe holder (3)；The X-ray detector (7) On elevating mechanism (8), elevating mechanism (8) is fixedly mounted in installation pedestal (1), and the collimater (5) is fixedly mounted In installation pedestal (1), and between modulation of X-ray pipe (2) and X-ray detector (7)；X-ray detector (7) utilizes liter Descending mechanism (8) is realized and moved up and down, and removes or move into the X ray light formed by the modulation of X-ray pipe (2) and collimater (5) Road；The high voltage power supply (4) is that modulation of X-ray pipe (2) provides X ray excited required high voltage, control and the processing electricity Road (6) is that modulation of X-ray pipe (2) provides grid modulation signal, control collimater (5) and elevating mechanism (8) action, detects and remembers The x-ray photon signal that record X-ray detector (7) detects；The collimater (5) includes bottom plate (9), the first turnbarrel (10), the second turnbarrel (12), the first lock-screw (11), the second lock-screw (13), extension bar (14), diaphragm drive mechanism (15), micromachine (16) and adjustable diaphragm (17)；Collimater (5) realized using bottom plate (9) and is fixedly connected with installation pedestal (1), the first turnbarrel (10) fixed installation On bottom plate (9), the second turnbarrel (12) is sleeved on the first turnbarrel (10), and adjustable diaphragm (17) is fixedly mounted on light On late drive mechanism (15)；Extension bar (14) one end is connected with diaphragm drive mechanism (15), and the other end is inserted after the second turnbarrel (12) by the second lock Tight screw (13) locking, realizes the regulation of adjustable diaphragm (17) height；First turnbarrel (10) and the second turnbarrel (12) drive diaphragm drive mechanism (15) to revolve by relative rotary motion Turn, so as to drive adjustable diaphragm (17) to be rotated, after positioning, between the first turnbarrel (10) and the second turnbarrel (12) Locked by the first lock-screw (11), realize the regulation of adjustable diaphragm (17) angle；The diaphragm opening diameter of adjustable diaphragm (17) is adjusted micromachine (16) control diaphragm drive mechanism (15).
- A kind of 2. X-ray pulsar navigation sensor on-orbit calibration radiographic source according to claim 1, it is characterised in that： The ray tube anode of the modulation of X-ray pipe (2) is the doping anode that multiple element is formed, for launching a plurality of characteristic spectral line, The multiple element includes aluminium, potassium, titanium, manganese, iron, nickel, copper, zinc, molybdenum.
- A kind of 3. X-ray pulsar navigation sensor on-orbit calibration radiographic source according to claim 1, it is characterised in that： The elevating mechanism (8) includes L-square (18), luggage carrier (19) and motorized precision translation stage (20)；The elevating mechanism (8) is fixed in installation pedestal by L-square (18), and the motorized precision translation stage (20) is arranged on straight On gusset (18), X-ray detector (7) is fixedly connected by luggage carrier (19) with motorized precision translation stage (20), and is followed electronic flat Moving stage (20) is moved on installation pedestal (1) direction.
- A kind of 4. X-ray pulsar navigation sensor on-orbit calibration radiographic source according to claim 1, it is characterised in that： The high voltage power supply (4) includes high-tension circuit, heater chain and control circuit, and high-tension circuit is that modulation of X-ray pipe (2) offer swashs The voltage needed for X ray is sent out, heater chain is that modulation of X-ray pipe (2) provides heater current, and control circuit is to modulating X-ray tube (2) tube voltage and heater current are adjusted.
- A kind of 5. X-ray pulsar navigation sensor on-orbit calibration radiographic source according to claim 3, it is characterised in that： The control and process circuit (3) include any signal and circuit, collimater control circuit, elevating mechanism drive circuit occur With X-ray detector signal processing circuit；It is that modulation of X-ray pipe (2) provides grid modulation signal that circuit, which occurs, for any signal；Collimater control circuit control Micromachine (16) in collimater (5) processed, is changed to the diameter of adjustable diaphragm (17)；Elevating mechanism drive circuit drives And control the up and down motion of elevating mechanism (8)；X-ray detector signal processing circuit detects and records X-ray detector (7) spy The x-ray photon signal measured.
- A kind of 6. X-ray pulsar navigation sensor on-orbit calibration radiographic source according to claim 1, it is characterised in that： The X-ray detector (7) is silicon photodiode detector.
- A kind of 7. X-ray pulsar navigation sensor on-orbit calibration radiographic source according to claim 1, it is characterised in that： The voltage of the X ray excited voltage of the modulation of X-ray pipe (2) is 4-10kV, and ray tube energy spectrum is 1-10keV, launches X-ray Sub- range of flow is 0.1~106ph/cm2/s。
- A kind of 8. X-ray pulsar navigation sensor on-orbit calibration radiographic source according to claim 1, it is characterised in that： Collimater (5) aperture is directed at installation with modulation of X-ray pipe (2) optical axis.
- A kind of 9. X-ray pulsar navigation sensor on-orbit calibration radiographic source according to claim 1, it is characterised in that： During the X ray light path that X-ray detector (7) the immigration modulation of X-ray pipe (2) and collimater (5) are formed, X-ray tube (2), Collimater (5), X-ray detector (7) form common optical axis；X-ray detector (7) removes modulation of X-ray pipe (2) and collimater (5) during the X ray light path formed, X-ray detector (7) avoids the X ray light path defined to X-ray tube (2) and collimater (5) Formed and stopped.
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| CN104458776B (en) * | 2014-12-30 | 2017-07-25 | 合肥美亚光电技术股份有限公司 | A kind of X-ray detection device for foreign matter and detection method |
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