CN105445808A - Apparatus and method for inspecting mobile target - Google Patents

Apparatus and method for inspecting mobile target Download PDF

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Publication number
CN105445808A
CN105445808A CN201410409522.7A CN201410409522A CN105445808A CN 105445808 A CN105445808 A CN 105445808A CN 201410409522 A CN201410409522 A CN 201410409522A CN 105445808 A CN105445808 A CN 105445808A
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China
Prior art keywords
moving target
betatron
passage
speed
sensor
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Granted
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CN201410409522.7A
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Chinese (zh)
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CN105445808B (en
Inventor
王利明
曲海波
刘喜龙
赵杰
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Tsinghua University
Nuctech Co Ltd
Beijing Hualixing Sci Tech Development Co Ltd
Original Assignee
Tsinghua University
Nuctech Co Ltd
Beijing Hualixing Sci Tech Development Co Ltd
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Application filed by Tsinghua University, Nuctech Co Ltd, Beijing Hualixing Sci Tech Development Co Ltd filed Critical Tsinghua University
Priority to CN201410409522.7A priority Critical patent/CN105445808B/en
Priority to EP15834549.6A priority patent/EP3185001B1/en
Priority to MYPI2017700511A priority patent/MY191339A/en
Priority to PCT/CN2015/087550 priority patent/WO2016026442A1/en
Priority to US15/503,676 priority patent/US10365234B2/en
Publication of CN105445808A publication Critical patent/CN105445808A/en
Priority to HK16111048.1A priority patent/HK1222914A1/en
Application granted granted Critical
Publication of CN105445808B publication Critical patent/CN105445808B/en
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Abstract

Disclosed are an apparatus and method for inspecting a mobile target by using fast imaging. A control unit powers on a betatron in order to enable the betatron to be in a standby state when receiving a detection signal, from a first position sensor, indicating that a mobile target enters a channel. When a second position sensor detects different sections pass by a radiation scanning region, the control unit controls the beam-emitting time point and beam-emitting mode of the betatron in order to correspondingly inspect each section of the mobile target travelling at non-uniform speed and controls the reconstruction of a scanning image according to the moving speed, received from a speed sensor, relative to the mobile target, and corrects scanning image data according to the moving speed. Accordingly, inspection is performed when a vehicle moves and a driver and passengers are not required to get off. The apparatus controls the betatron to emit a ray beam with corresponding energy at an extremely fast speed in order to scan the mobile target when the mobile target passes by the scanning region, and achieves a flexibly scanning mode so as to greatly shorten inspection time.

Description

To the Apparatus and method for that moving target checks
Technical field
The present invention relates to the scanning imagery process to moving target, particularly relate to a kind of Apparatus and method for moving target being carried out to imaging inspection.
Background technology
High-energy ray is utilized to be representative instance moving target being carried out to the equipment of imaging inspection to the equipment that vehicle checks.In the equipment utilizing high-energy ray to check vehicle, usually drag examined vehicle by actuator and at the uniform velocity move, the high-energy ray of fixed frequency launched continuously by accelerator.This equipment has the baffle plate that can shield this ray, and high-energy ray whether directive is checked vehicles and to be controlled by this baffle plate.When the flaps are opened, high-energy ray is emitted to by checking target, scans, imaging to vehicle, thus checks.
In this traditional equipment, because accelerator is in normally open, power consumption is large; And cause device temperature very high all the time, need large-scale cooling device thus occupy very large space; And long-term start affects the serviceable life of accelerator, thus make cost of products higher; And open accelerator all the time and can there is dark electronics, there is potential danger.Meanwhile, owing to adopting the transmitting of the open and close controlling high-energy ray of mechanical shutter, response speed is slow, and make the supervision time longer, vehicle inspection rate is low.
Summary of the invention
Consider the problems of the prior art, the object of the invention is to propose a kind of Apparatus and method for moving target being carried out to imaging inspection.
In one aspect of the invention, propose a kind of equipment moving target being carried out to quick-speed image-forming checking, comprising: the passage passed through for described moving target, scanned imagery device, comprises the betatron of generation X ray and receives the detecting devices penetrating the X ray of described moving target, and described betatron is launched X ray to the moving target by described passage and carried out imaging to described moving target, primary importance sensor, is arranged on the far-end of described scanned imagery device side, exports transducing signal and shows whether described moving target enters described passage, speed pickup, measures the translational speed of moving target in described passage, second place sensor, be arranged between described primary importance sensor and described scanned imagery device, detect the type feature of described moving target and distinguish the protected part of moving target and non-protected part, by moving target segmentation, export protected part that transducing signal shows described moving target by or by radiation scanning district, control module, with described scanned imagery device, described speed pickup, described primary importance sensor is connected with described second place sensor, power on to when the described moving target received from primary importance sensor enters the detection signal of described passage described betatron, it is made to be in holding state, when second place sensor detects different section by described radiation scanning district, control described betatron go out Shu Shidian and go out bundle pattern each section to non-moving target of at the uniform velocity advancing and check accordingly, and control the reconstruction to scan image according to the translational speed of the relevant moving target received from described speed pickup, and revise scan image data according to described translational speed.
According to some embodiments, distance between primary importance sensor and described scanned imagery device is set to larger than predetermined numerical value, makes to detect that described moving target is counted the described moving target time entered between radiation scanning district and is more than or equal to described betatron from power on to the time being in holding state from first sensor.
According to some embodiments, moving target at a predetermined velocity scope by described passage: if moving target to be on this predetermined speed range in limited time, described scanned imagery device goes out to restraint frequency according to betatron and samples; Prescribe a time limit lower than on this predetermined speed range if any moving target, described scanned imagery device is in over-sampling state, adopts method of interpolation or convolution method to be reconstructed image.
According to some embodiments, carry out driver for car, motor bus, container truck, van and not get off the full car scanning or sectional scanning that drive through.
According to some embodiments, second place sensor is also set to detect and differentiate non-vehicle, car, motor bus, trailer-type container truck, van.
According to some embodiments, control module sends instruction according to the transducing signal of second place sensor, to switch the work schedule of the deflection coil of described betatron, produces the X-ray beam of different-energy.
According to some embodiments, described equipment also comprises the 3rd position transducer, described 3rd position transducer is for judging whether described moving target leaves described passage, and after the 3rd position transducer detects that described moving target entirety shifts out radiation scanning district, described control module sends control signal to be stopped powering to described betatron.
According to some embodiments, described primary importance sensor comprises: the first quick response light curtain switch being arranged on described passage both sides being embedded in the first ground induction coil below described feeder connection earth's surface and being combined with it.
According to some embodiments, described passage both sides have installation column, and the described first quick response light curtain switch-linear hybrid is on described column.
According to some embodiments, described speed pickup comprises the velocity radar being arranged on passage both sides.
According to some embodiments, described second place sensor comprises the second quick response light curtain switch and the optoelectronic switch being arranged on passage both sides.
According to some embodiments, described 3rd position transducer comprises: be embedded in below the earth's surface in described passage and be partial to the second ground induction coil exported and the 3rd quick response light curtain switch being arranged on described passage both sides be combined with it.
In another aspect of this invention, propose a kind of method of moving target being carried out to quick-speed image-forming checking, comprising: export transducing signal from primary importance sensor and show whether moving target enters the passage passed through for described moving target; Speed pickup is utilized to measure the translational speed of moving target in described passage; Whether utilize second place sensor to detect moving target needs the part of protection by radiation scanning district; Power on to the betatron of scanned imagery device when the described moving target received from primary importance sensor enters the detection signal of described passage, it is made to be in holding state, wherein said scanned imagery device comprises the betatron of generation X ray and receives the detecting devices penetrating the X ray of described moving target, and described betatron is launched X ray to the moving target by described passage and carried out imaging to described moving target; When second place sensor detects different section by described radiation scanning district, control described betatron go out Shu Shidian and go out bundle pattern each section to non-moving target of at the uniform velocity advancing and check accordingly, and control the reconstruction to scan image according to the translational speed of the relevant moving target received from described speed pickup, and revise scan image data according to described translational speed.
According to some embodiments, distance between primary importance sensor and described scanned imagery device is set to larger than predetermined numerical value, makes to detect that described moving target is counted the described moving target time entered between radiation scanning district and is more than or equal to described betatron from power on to the time being in holding state from first sensor.
According to some embodiments, moving target at a predetermined velocity scope by described passage: if moving target to be on this predetermined speed range in limited time, described scanned imagery device goes out to restraint frequency according to betatron and samples; Prescribe a time limit lower than on this predetermined speed range if any moving target, described scanned imagery device is in over-sampling state, adopts method of interpolation or convolution method to be reconstructed image.
According to some embodiments, described method also comprises: utilize the 3rd position transducer to judge whether described moving target leaves described passage, and after the 3rd position transducer detects that described moving target entirety shifts out radiation scanning district, send control signal and stop powering to described betatron.
According to some embodiments, above-mentioned moving target is such as moving vehicle, and the part needing protection is vehicle head part.
In one embodiment of the invention; provide the equipment utilizing high-energy ray to check vehicle; check in the process that vehicle is advanced; the beam not needing driver and conductor's drive up facility to launch corresponding energy by control accelerator during scanning area with the response speed be exceedingly fast at described moving target carries out scanning (according to user's request; also can not scan protected part carrying out entire scan by inspection moving target), scan mode also can shorten the supervision time flexibly greatly.
Vehicle percent of pass, owing to have employed above-mentioned technical scheme, can be brought up to and per hourly be greater than 200 container trucks by the present invention.Compared with the existing technology, the present invention can improve vehicle inspection rate greatly, and equipment power consumption and cost significantly reduce, and make integral device floor area little owing to not needing large-scale cooling device.Thus equipment can be made to use in all kinds of highway bayonet socket occasion.
Accompanying drawing explanation
For a better understanding of the present invention, will be described embodiments of the invention according to the following drawings:
Fig. 1 is the structural representation of the checkout facility according to one embodiment of the present invention;
Fig. 2 shows the structural representation of betatron used in checkout facility as shown in Figure 1;
Fig. 3 and Fig. 4 describes the schematic diagram according to the inspection method of the embodiment of the present invention.
Accompanying drawing does not show all circuit of embodiment or structure.The Reference numeral running through institute's drawings attached identical represents same or analogous parts or feature.
Embodiment
To specific embodiments of the invention be described in detail below, it should be noted that the embodiments described herein is only for illustrating, is not limited to the present invention.In the following description, in order to provide thorough understanding of the present invention, a large amount of specific detail has been set forth.But, those of ordinary skill in the art be it is evident that: these specific detail need not be adopted to carry out the present invention.In other instances, in order to avoid obscuring the present invention, do not specifically describe known circuit, material or method.
In whole instructions, " embodiment ", " embodiment ", " example " or mentioning of " example " are meaned: the special characteristic, structure or the characteristic that describe in conjunction with this embodiment or example are at least one embodiment of the invention involved.Therefore, the phrase " in one embodiment " occurred in each place of whole instructions, " in an embodiment ", " example " or " example " differ to establish a capital and refer to same embodiment or example.In addition, can with any suitable combination and/or sub-portfolio by specific feature, structure or property combination in one or more embodiment or example.In addition, it should be understood by one skilled in the art that the accompanying drawing provided at this is all for illustrative purposes, and accompanying drawing is not necessarily drawn in proportion.Should be appreciated that when claim element " be couple to " or " being connected to " another element time, it can be directly couple or be couple to another element or can there is intermediary element.On the contrary, when claim element " be directly coupled to " or " being directly connected to " another element time, there is not intermediary element.Identical Reference numeral indicates identical element.Term "and/or" used herein comprises any and all combinations of one or more relevant project listed.
The equipment that moving target carries out imaging inspection is described to of the present invention below in conjunction with accompanying drawing.As shown in the figure, be described using the quick checkout facility of vehicle as an embodiment.Following explanation, just in order in conjunction with example, the present invention will be described, is not in order to the present invention is limited to following content.
Fig. 1 is a kind of equipment vehicle being carried out to quick-speed image-forming checking according to the embodiment of the present invention.As shown in Figure 1, in an embodiment of the present invention, the moving target of such as vehicle and so on is by entering inspection passage, detected by primary importance sensor 101, control device 105 is given an order, and starts the betatron in scanned imagery device 106, powers on then be in holding state to it.Second place sensor 103 detects the type feature of moving target and distinguishes the protected part of moving target and non-protected part; by correct for moving target segmentation (such as needing driving cabin section and other the non-protected portions of protection), export transducing signal respectively and show that the protected part of described moving target is being passed through and passing through scanning area.Control device 105 powers on to when the described moving target received from primary importance sensor 101 enters the detection signal of described passage described betatron, it is made to be in holding state, when second place sensor detects different section by described radiation scanning district, control described betatron and go out Shu Shidian and go out bundle pattern two parts to moving target and check accordingly.Such as, use low-energy ray to check for driving cabin, the roentgen dose X that such driving cabin accepts is very low, and therefore driver need not get off, and uses high-octane ray to check to the part that container is such, obtains the picture rich in detail of target part.Meanwhile, in the above-described embodiments, speed pickup 102 is utilized to measure the speed of the non-vehicle of at the uniform velocity advancing obtained.Control device 105 controls the impulse radiation bundle that described betatron sends fixed frequency, carry out scanning to non-moving target of at the uniform velocity advancing to check, and control the reconstruction to scan image according to the translational speed of the relevant moving target received from described speed pickup.
Scanned imagery device 106 comprises the betatron of generation X ray and receives the detecting devices penetrating the X ray of described moving target, and this betatron is launched X ray to the moving target by passage and carried out imaging to described moving target.Primary importance sensor 101 is arranged on the far-end of scanned imagery device side, exports transducing signal and shows whether described moving target enters described passage.Second place sensor 103 is arranged between primary importance sensor 101 and described scanned imagery device 106; detect the type feature of moving target and distinguish the protected part of moving target and non-protected part; by correct for moving target segmentation, export transducing signal respectively and show that the protected part of described moving target is being passed through and passing through scanning area.
Control device 105 is connected with scanned imagery device 106, primary importance sensor 101 and second place sensor 103, power on to when the moving target received from primary importance sensor 101 enters the detection signal of described passage described betatron, it is made to be in holding state, when second place sensor 103 detects different section by described radiation scanning district, control described betatron and go out Shu Shidian and go out bundle pattern two parts to moving target and check accordingly.
In the illustrated embodiment in which, distance between primary importance sensor 101 and described scanned imagery device 106 is set to larger than predetermined numerical value, makes to detect that described moving target is counted the described moving target time entered between radiation scanning district and is more than or equal to described betatron from power on to the time being in holding state from primary importance sensor.
As shown in Figure 1, this checkout facility can also comprise speed pickup 102, be arranged between primary importance sensor 101 and described scanned imagery device 106, measure the translational speed of moving target in described passage, primary importance sensor 101 receive described moving target enter the detection signal of described passage time, described control device 105 control rate sensor 102 is measured the translational speed of described moving target, and control the reconstruction to scan image according to the translational speed of the relevant moving target received from described speed pickup 102, and revise scan image data according to described translational speed.
Such as, moving target at a predetermined velocity scope by described passage.If moving target is on this predetermined speed range and prescribes a time limit, scanned imagery device 106 goes out to restraint frequency according to betatron and samples.Prescribe a time limit lower than on this predetermined speed range if any moving target, scanned imagery device 106 is in over-sampling state, adopts method of interpolation or convolution method to be reconstructed image.
As shown in Figure 1, checkout facility can also comprise the 3rd position transducer 104.Described 3rd position transducer 104 is for judging whether described moving target leaves described passage, and after the 3rd position transducer 104 detects that described moving target entirety shifts out radiation scanning district, described control device 105 can send control signal to be stopped powering to described betatron.In other embodiments, if primary importance sensor 101 after this vehicle being detected still other vehicles old time, then control device 105 does not send and stops the control signal of powering to betatron.
Fig. 2 shows the structural representation of betatron used in checkout facility as shown in Figure 1.Betatron is a kind of cyclotron, electrons in vacuum acceleration chamber annularly track move, obtain enough energy by eddy current field simultaneously.This eddy current field is caused by magnetic flux pulse change, controls the movement locus of electronics while providing energy.
In system as shown in Figure 2, accelerator mainly comprises: radiator 205, power supply unit 203, pulse converter 204 and interface unit (not shown).Radiator comprises high pressure injection unit assembly, accelerating chamber, main pole and magnetic pole winding, and deflection winding, Kang Te pulls around group (constraint winding), ionization chamber etc.In an embodiment, RS-422 digital signal and corresponding protocol translation are such as the USB standard signal that computer uses by interface box.
Pulse converter 204 is for generating the current impulse of Kang Tela (constrainer) and deflection system, and the potential pulse of injected system.Converter can provide three kinds of output voltages: (1) is for the 400V voltage of injecting voltage generator; (injecting voltage generator is started (startup thyristor) by the synchronous plate of power supply unit, and double-strand circuit can discharge to the high-tension transformer armature winding of injection unit, thus generates high-voltage pulse on the secondary winding of this transformer); (2) for retraining the 360V voltage of current feedback circuit; Synchronous plate can trigger the 560V voltage of constraint current feedback circuit (startup thyristor) and (3) for deflection current generator.When driver receives pulse from synchronous plate, deflection current maker (startup igbt transistor) will be triggered.Connect the coupling element of other unit, main power switch and operation controlling functions in power supply unit to be all positioned in same panel.Power supply changeover device is by a three-phase supply 220/380V Power supply.Power supply changeover device is used for exciting accelerator magnet.It comprises a three phase rectifier, a secondary transistor bridge (switchboard) based on IGBT tri-grades of transistors, an energy input thyratron, and a protector.
As shown in Figure 2, betatron also comprises the supply unit 203, synchronous device 202, the controller 201 that provide voltage and filament voltage.Supply unit 203 is before magnet activates, and can provide+12V voltage to filament control circuit, this voltage can reduce filament output voltage, thus makes it be in standby mode.When starting radiation, this voltage becomes 0, and filament voltage will promote 2-3V.Reducing filament voltage when closing radiation, the life-span of accelerating chamber can be promoted.Synchronous device 202 can send control signal with special time sequence to betatron system, transmits timing signal BeamTrig (triggerable electronic bundle) to cargo detection system (CIS), controlled radiation switch by the external signal RADON (startup radiation) from cargo detection system and processed emergency-stop signal.Controller 201 has the peripherals run for controlling betatron, and this controller is for controlling power supply changeover device, stable electrical magnet voltage, regulating electron energy.
Fig. 3 and Fig. 4 describes the schematic diagram according to the inspection method of the embodiment of the present invention, and wherein Fig. 4 is the schematic top plan view of equipment shown in Fig. 3.As shown in Figures 3 and 4, the equipment of quick-speed image-forming checking comprises accelerator cabin body 309, quick response light curtain switch 302,305 and 306, ground induction coil 303 and 308, optoelectronic switch 310, fender wall 304 and 311, velocity radar 307, several parts such as detector arm 312, control software design.Quick response light curtain switch 302 is arranged on the installation column of passage both sides, be first switch of vehicle entrance below the earth's surface that ground induction coil 303 is embedded in feeder connection, fender wall 304, the 311 vertical passage both sides that are contained in also are connected with detector arm 312 with the accelerator cabin body 309 of passage both sides respectively, quick response light curtain switch 305, on 306 walls being arranged on the accelerator cabin body 309 of passage both sides and detector arm 312, optoelectronic switch 310 is arranged on the fender wall 311 of passage both sides, velocity radar 307 is arranged on accelerator cabin body 309 on the exterior wall of passage, ground induction coil 308 is partial to Way out under being embedded in the earth's surface of passage.The course of work of the present invention is as follows:
When in passage, vehicle number is 0, system is in holding state, when a car 301A sails to passage, ground induction coil 303 is first effective, and complete the differentiation to vehicle heading in conjunction with quick response light curtain switch 302, if vehicle sails passage into, in passage, number of vehicles adds 1, velocity radar 307 pairs of Vehicle Speed are measured, and system enters ready state.Vehicle continues to move forward, the state change of the omnidistance registration of vehicle of system in passage driving process.
When vehicle with normal speed by 301A through 301B to 301C time optoelectronic switch 310 effective, be now container truck or closed lorry by the tested vehicle of condition discrimination of light curtain switch 305, adopt different scanning trigger condition according to different automobile types.If vehicle is now closed lorry, accelerator goes out Shu Jinhang scanning immediately.
The equipment of described quick-speed image-forming checking can further include detector, after quick response light curtain switch 302 detects that vehicle enters inspection area, if the condition discrimination of above-mentioned light curtain switch 305 is container trucks, whether the pilothouse starting to detect vehicle passes through and produces by signal, then when container arrives inspection area, carry out scanography.Wherein said control system according to send from described detector by signal, produce and produce the control signal of electron beam for controlling described betatron system.
When vehicle travels out scan channel, in passage, vehicle count subtracts 1.As long as vehicle fleet size is not 0 in passage, system remains on ready state; When vehicle fleet size in passage is 0, system enters holding state.
In an embodiment of the present invention, when the sensor of Channel front end, such as, when ground induction coil 303 and light curtain switch 302 have detected vehicle admission passage, betatron in control device 105 gated sweep imaging device powers on, the electron gun of betatron produces electron beam, the electron beam produced is injected among the rotary track of magnet winding formation, accelerates it this.After accelerating to predetermined electron energy, such as, after accelerating to several M electron volts, the electron beam that be will speed up by deflection winding is drawn, and bombardment target, produces X ray.In the process accelerated, Kang Te pulls around group and gathers electron beam, prevents electron beam divergence.
In the above-described embodiments, above-mentioned switch 302 can be formed as the first quick response light curtain switch, above-mentioned switch 305 be formed as the second quick response light curtain switch, above-mentioned switch 306 is formed as the 3rd quick response light curtain switch, above-mentioned switch 310 is formed as optoelectronic switch.In other embodiments, this optoelectronic switch can also use together with another quick response light curtain switch.
In certain embodiments; second place sensor detects the type feature of described moving target and distinguishes the protected part of moving target and non-protected part; by moving target segmentation, export protected part that transducing signal shows described moving target by or by radiation scanning district.Such as, can judge that the type of moving target is container truck, van etc., and carry out the scan mode of predefined type according to vehicle.Such as, when determining to be motor bus, need not scan vehicle, if closed truck, then carrying out bundle scanning.If container truck, then go out bundle scanning when container arrives radiation scanning district until vehicle head part rolls radiation scanning district away from after postponing the regular hour.Or the vehicle head part for container truck uses the X-ray beam of the first energy, use the X-ray beam of the second energy for con-tainer part, this first energy is the about 1/3rd even lower of the second energy.
Like this, after vehicle is divided into different sections, control module is when second place sensor detects different section by described radiation scanning district, control described betatron go out Shu Shidian and go out bundle pattern each section to moving target and check accordingly, and revise scan image data according to the speed of a motor vehicle.
Such as, in certain embodiments, carry out driver for car, motor bus, container truck, van not get off the full car scanning or sectional scanning that drive through.For another example, second place sensor is also set to detect and differentiate non-vehicle, car, motor bus, trailer-type container truck, van.
Because betatron is very short for the switching time between different operating sequential, so control module can send instruction according to the transducing signal of second place sensor, to switch the work schedule of the deflection coil of described betatron, produce the X-ray beam of different-energy.Such as; by arranging different work schedules; can use the X-ray beam of the first energy for shielded part such as driving cabin, use the X-ray beam of the second energy for not shielded part, this first energy is the about 1/3rd even lower of the second energy.Like this, can scan with the different sections of different scan patterns to the vehicle of movement.Such as, when the first energy be 2.5MeV second energy is 7.5MeV, the exposure dose that driving cabin accepts is approximately 3 percent of the exposure dose that container accepts, and therefore driver need not get off and also can check in this case.
In other embodiments, control module carries out safety check according to the transducing signal of sensor with different working methods.Such as queuing up continuously at vehicle carries out in the continous way work of safety check, and betatron can switch at holding state and duty.For another example, under service intermittent mode, vehicle few sparse by safety check time, betatron can power on and switch between non-power-up state.
According to the scheme of some embodiments; check in the process that vehicle is advanced; the beam not needing driver and conductor's drive up facility to launch corresponding energy by control accelerator during scanning area with the response speed be exceedingly fast at described moving target carries out scanning (according to user's request; also can not scan protected part carrying out entire scan by inspection moving target), scan mode also can shorten the supervision time flexibly greatly
Like this, because of tested vehicle in inspection passage quickly through, and vehicle is in the safety that will ensure driver when being checked, so system to send to accelerator for different section correspondingly go out Shu Zhiling (enable electron gun enable signal).After applying this accelerator system, substantially increase vehicle inspection efficiency, and the equipment cost of system reduces.Adopt the said equipment, safe and reliable imaging inspection can be carried out to Fast Moving Object.
Although exemplary embodiment describe the present invention with reference to several, should be appreciated that term used illustrates and exemplary and nonrestrictive term.Spirit or the essence of invention is not departed from because the present invention can specifically implement in a variety of forms, so be to be understood that, above-described embodiment is not limited to any aforesaid details, and explain widely in the spirit and scope that should limit in claim of enclosing, therefore fall into whole change in claim or its equivalent scope and remodeling and all should be claim of enclosing and contained.

Claims (16)

1. moving target is carried out to an equipment for quick-speed image-forming checking, comprising:
For the passage that described moving target passes through;
Scanned imagery device, comprises the betatron of generation X ray and receives the detecting devices penetrating the X ray of described moving target, and described betatron is launched X ray to the moving target by described passage and carried out imaging to described moving target;
Primary importance sensor, is arranged on the far-end of described scanned imagery device side, exports transducing signal and shows whether described moving target enters described passage;
Speed pickup, measures the translational speed of moving target in described passage;
Second place sensor, be arranged between described primary importance sensor and described scanned imagery device, detect the type feature of described moving target and distinguish the protected part of moving target and non-protected part, by moving target segmentation, export protected part that transducing signal shows described moving target by or by radiation scanning district;
Control module, with described scanned imagery device, described speed pickup, described primary importance sensor is connected with described second place sensor, power on to when the described moving target received from primary importance sensor enters the detection signal of described passage described betatron, it is made to be in holding state, when second place sensor detects different section by described radiation scanning district, control described betatron go out Shu Shidian and go out bundle pattern each section to non-moving target of at the uniform velocity advancing and check accordingly, and control the reconstruction to scan image according to the translational speed of the relevant moving target received from described speed pickup, and revise scan image data according to described translational speed.
2. equipment according to claim 1, distance wherein between primary importance sensor and described scanned imagery device is set to larger than predetermined numerical value, makes to detect that described moving target is counted the described moving target time entered between radiation scanning district and is more than or equal to described betatron from power on to the time being in holding state from first sensor.
3. equipment according to claim 1, wherein, moving target at a predetermined velocity scope by described passage: if moving target to be on this predetermined speed range in limited time, described scanned imagery device goes out to restraint frequency according to betatron and samples;
Prescribe a time limit lower than on this predetermined speed range if any moving target, described scanned imagery device is in over-sampling state, adopts method of interpolation or convolution method to be reconstructed image.
4. equipment according to claim 1, wherein carries out driver for car, motor bus, container truck, van and not to get off the full car scanning or sectional scanning that drive through.
5. equipment according to claim 1, wherein second place sensor is also set to detect and differentiate non-vehicle, car, motor bus, trailer-type container truck, van.
6. equipment according to claim 1, wherein control module sends instruction according to the transducing signal of second place sensor, to switch the work schedule of the deflection coil of described betatron, produces the X-ray beam of different-energy.
7. equipment according to claim 1, also comprise the 3rd position transducer, described 3rd position transducer is for judging whether described moving target leaves described passage, and after the 3rd position transducer detects that described moving target entirety shifts out radiation scanning district, described control module sends control signal to be stopped powering to described betatron.
8. equipment according to claim 1, wherein said primary importance sensor comprises:
The the first quick response light curtain switch being arranged on described passage both sides being embedded in the first ground induction coil below described feeder connection earth's surface and being combined with it.
9. equipment according to claim 5, wherein said passage both sides have installation column, and the described first quick response light curtain switch-linear hybrid is on described column.
10. equipment according to claim 1, wherein said speed pickup comprises the velocity radar being arranged on passage both sides.
11. equipment according to claim 1, wherein, described second place sensor comprises the second quick response light curtain switch and the optoelectronic switch being arranged on passage both sides.
12. equipment according to claim 5, wherein said 3rd position transducer comprises:
Be embedded in below the earth's surface in described passage and be partial to the second ground induction coil exported and the 3rd quick response light curtain switch being arranged on described passage both sides be combined with it.
13. 1 kinds are carried out the method for quick-speed image-forming checking to moving target, comprising:
Export transducing signal from primary importance sensor and show whether moving target enters the passage passed through for described moving target;
Speed pickup is utilized to measure the translational speed of moving target in described passage;
Whether utilize second place sensor to detect moving target needs the part of protection by radiation scanning district;
Power on to the betatron of scanned imagery device when the described moving target received from primary importance sensor enters the detection signal of described passage, it is made to be in holding state, wherein said scanned imagery device comprises the betatron of generation X ray and receives the detecting devices penetrating the X ray of described moving target, and described betatron is launched X ray to the moving target by described passage and carried out imaging to described moving target;
When second place sensor detects different section by described radiation scanning district, control described betatron go out Shu Shidian and go out bundle pattern each section to non-moving target of at the uniform velocity advancing and check accordingly, and control the reconstruction to scan image according to the translational speed of the relevant moving target received from described speed pickup, and revise scan image data according to described translational speed.
14. methods according to claim 11, distance wherein between primary importance sensor and described scanned imagery device is set to larger than predetermined numerical value, makes to detect that described moving target is counted the described moving target time entered between radiation scanning district and is more than or equal to described betatron from power on to the time being in holding state from first sensor.
15. methods according to claim 11, wherein, moving target at a predetermined velocity scope by described passage: if moving target to be on this predetermined speed range in limited time, described scanned imagery device goes out to restraint frequency according to betatron and samples;
Prescribe a time limit lower than on this predetermined speed range if any moving target, described scanned imagery device is in over-sampling state, adopts method of interpolation or convolution method to be reconstructed image.
16. methods according to claim 11, also comprise: utilize the 3rd position transducer to judge whether described moving target leaves described passage, and after the 3rd position transducer detects that described moving target entirety shifts out radiation scanning district, send control signal and stop powering to described betatron.
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MYPI2017700511A MY191339A (en) 2014-08-19 2015-08-19 Apparatus and method for inspecting moving target
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US15/503,676 US10365234B2 (en) 2014-08-19 2015-08-19 Apparatus and method for inspecting moving target
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