CN101162209A - Equipment and method for quick-speed image-forming checking mobile target - Google Patents
Equipment and method for quick-speed image-forming checking mobile target Download PDFInfo
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- CN101162209A CN101162209A CNA2006101706169A CN200610170616A CN101162209A CN 101162209 A CN101162209 A CN 101162209A CN A2006101706169 A CNA2006101706169 A CN A2006101706169A CN 200610170616 A CN200610170616 A CN 200610170616A CN 101162209 A CN101162209 A CN 101162209A
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Abstract
The invention discloses a device used for the imaging and checking to a moving target rapidly, comprising a channel for the moving target to pass through; a scan imaging device which images the moving target by emitting radiant flux to the moving target passing through the channel and then checks the moving target; a first detecting unit which is used for judging whether the moving target enters the channel and counting the number of the moving target entering the channel; a second detecting unit which is used for measuring the moving speed of the moving target in the channel; and a control unit which controls the second detecting unit to detect the moving speed of the moving target according to the detecting signals received from the first detecting unit about the moving target entering the channel, and controls the scan imaging device according to the measuring result of the second detecting unit, so that the scan imaging device emits radiant flux at a frequency corresponding to the speed of the moving target, thereby checking the moving target.
Description
Technical field
The present invention relates to scanning imagery process, particularly carry out non-uniform movement and need carry out scanning imagery process under the situation of incomplete fast imaging in target to moving target.Particularly, the application relates to a kind of Apparatus and method for that moving target is carried out quick-speed image-forming checking.
Background technology
The equipment that utilizes high-energy ray that vehicle is checked is a representative instance that moving target is carried out the equipment of imaging inspection.In the equipment that utilizes high-energy ray that vehicle is checked, what usually adopt is that the driver and conductor leaves vehicle, is dragged by actuator that to be examined vehicle at the uniform velocity mobile, radiation source adopt fixing frequency to whole vehicle scan, imaging.The whole supervision time needs several minutes, the equipment cost height.The vehicle inspection rate is low.
W02005098400 discloses a kind of check system that object is checked, it comprises: first source, first radiation beam with certain cross section is provided, and first radiation beam points to first direction, and described first direction becomes horizontal with the movement of objects direction; Second source provides second radiation beam with certain cross section, and second radiation beam points to second direction and temporarily mixes mutually with first radiation beam; A plurality of scattering detectors are used for surveying the radiation beam that comes from least one emission of first and second radiation beams, and produce radiation signal; And controller, be used for producing image based on above-mentioned radiation signal.
WO2005098401 disclose a kind of be used to check mobile object from the animal body check system, comprising: scanning area has radiation source and radiation source detecting device; The first sensor element, automatically the first of detecting moving target will enter scanning area by the second portion of scanning area and moving target, wherein when the second portion that detects target will enter scanning area the first sensor element to sending signal from the animal body check system to begin to scan second portion; And flashboard, by signal triggering from the first sensor element, when the second portion of moving target passed through scanning area, the radiation that radiation source is sent was passed through scanning area along the direction of radiation detector, closes radiation when the second portion of moving target is not in scanning area.
All there is the shortcoming of prior art recited above in above-mentioned two kinds of testing fixtures, promptly adopt fixing frequency to scan, and the supervision time is long, the equipment cost height, and the vehicle inspection rate is low.
Summary of the invention
In order to overcome above-mentioned defective of the prior art, the purpose of this invention is to provide and a kind of moving target is carried out the Apparatus and method for of quick-speed image-forming checking, can carry out quick check to the target that moves with certain speed range, shorten the supervision time greatly.
According to a further aspect in the invention, provide a kind of moving target is carried out the equipment of quick-speed image-forming checking, the scanning trigger condition that they can be different according to the dissimilar employings of moving target.
According to a further aspect of the present invention, provide a kind of moving target is carried out the equipment of quick-speed image-forming checking, it can be according to the duty of the quantity gated sweep imaging device of moving target in the passage.
According to further aspect of the present invention, provide a kind of moving target is carried out the equipment of quick-speed image-forming checking, it can protect the operating personnel of moving target to avoid the radiation of radiation beam.
In order to realize above-mentioned goal of the invention, technical scheme of the present invention adopts following mode to realize.
A kind of moving target is carried out the equipment of quick-speed image-forming checking, comprising: the passage that passes through for described moving target; Scanned imagery device, described scanned imagery device to the moving target radiation beams by described passage so that moving target is carried out imaging, thereby check; First detecting unit is used to differentiate whether entering described passage and the moving target that enters described passage being counted of described moving target; Second detecting unit is used to measure the translational speed of moving target in described passage; And control module, the detection signal that described control module enters described passage according to the relevant moving target that receives from first detecting unit is controlled second detecting unit translational speed of moving target is detected, and according to the measurement result gated sweep imaging device of second detecting unit, so that scanned imagery device is sending radiation beam with the corresponding frequency of the speed of moving target, thereby moving target is checked.
In the said equipment, also comprise the 3rd detecting unit, be used to judge the type of described moving target, the time that described control module sends radiation beam according to the type gated sweep imaging device of the moving target that is detected.
In the said equipment, also comprise the 4th detecting unit, be used to differentiate and checked whether leaving described passage and the moving target of being checked that sails in the passage being counted of moving target, and when control module determines that difference is zero between the counting of the counting of first detecting unit and the 4th detecting unit, make equipment enter holding state.
In the said equipment, described first detecting unit comprises: be embedded in first ground induction coil below the described feeder connection face of land and the first quick response light curtain switch that is arranged on described passage both sides that is used in combination with it.
In the said equipment, described scanned imagery device comprises: radiation source is used for radiation beams so that the moving target by described passage is scanned; Detector is used to receive the radiation beam that passes described moving target; Imaging device, the radiation beam that passes moving target that receives according to detector carries out imaging; And radioprotector, be used for the amount of the radiation beam of equipment periphery is limited within the allowed band.Further, described radioprotector is arranged on the fender wall of passage both sides.
The present invention also provides a kind of moving target is carried out the method for quick-speed image-forming checking, comprises following step: judge whether admission passage of moving target; Judge the translational speed of the moving target that enters described passage; Sending radiation beam, thereby moving target is checked with the corresponding frequency of the translational speed of moving target.
Said method also comprises judges whether moving target leaves passage and the moving target that leaves described passage is counted, wherein judge moving target whether admission passage comprises the moving target that enters described passage is counted, relatively leave described passage moving target counting and enter the counting of the moving target of described passage, when the counting of the moving target that leaves described passage and the counting that enters the moving target of described passage equate, suspend and send radiation beam.
In one embodiment of the invention, the equipment that utilizes high-energy ray that vehicle is checked is provided, in the process that vehicle is advanced with certain speed, has checked, do not needed the driver and conductor to get off, can shorten the supervision time greatly, realize 100% inspection rate thereby improve the vehicle percent of pass.
The present invention can bring up to the vehicle percent of pass per hour greater than 200 container trucks owing to adopted above-mentioned technical scheme.Compare with prior art, the present invention can improve the vehicle inspection rate greatly, and equipment cost significantly reduces, and occupation area of equipment is little.Thereby equipment is used in all kinds of highway bayonet socket occasions.
The present invention is further illustrated below in conjunction with accompanying drawing and concrete embodiment.
Description of drawings
By describing preferred embodiment in detail, above-mentioned purpose of the present invention and advantage will be more obvious with reference to accompanying drawing, wherein:
Fig. 1 is the synoptic diagram of vehicle inspection equipment according to an embodiment of the invention;
Fig. 2 is the schematic top plan view of equipment shown in Figure 1; And
Fig. 3 is the process flow diagram that moving target is carried out the method for quick-speed image-forming checking according to of the present invention.
Embodiment
1 and the 2 pair of structure and course of work as the vehicle inspection equipment of one exemplary embodiment of the present invention is elaborated below with reference to accompanying drawings.
Vehicle quick check equipment of the present invention comprises for being checked passage 14, the radiation source cabin body 9 that scanned imagery device is installed in it that moving target passes through, be used for detecting quick response light curtain switch 2 and the ground induction coil 3 that vehicle sails passage into, velocity radar 7 and the pulpit (not shown) that is used for the translational speed of measuring vehicle such as being loaded with container.Response light curtain switch 2 is installed on the installation column of passage both sides fast, ground induction coil 3 is embedded in below near the face of land on feeder connection (right side of accompanying drawing 2) first switch as the vehicle inlet, these two devices are used in combination, and are used to differentiate checked whether entering described passage and the vehicle of admission passage being counted by first counter of moving target.This first counter can be arranged in quick response light curtain switch 2 and/or the ground induction coil 3, also can be arranged in the pulpit.Velocity radar 7 is used to measure the translational speed of being checked moving target, can be installed in radiation source cabin body 9 in the present embodiment near on the exterior wall of passage.Pulpit and described radiation source, quick response light curtain switch 2 and ground induction coil 3, velocity radar 7 electric connections, make quick response light curtain switch 2 and ground induction coil 3, the detection signal of velocity radar 7 is transported to the pulpit, the pulpit is provided with the control module that Control Software is installed, the translational speed that can enter 7 pairs of vehicles of detection signal control velocity radar of described passage according to the relevant vehicle from quick response light curtain switch 2 and ground induction coil 3 receptions detects, and vehicle is checked with the corresponding sweep frequency of speed of vehicle according to the measurement result gated sweep imaging device employing of velocity radar 7.Sweep frequency is higher when the translational speed of the vehicle that is detected is very fast, and works as the translational speed of the vehicle that is detected when slow, and sweep frequency is lower, can guarantee that like this image is indeformable.
Referring to Fig. 1 and 2, vehicle quick check equipment also comprises optoelectronic switch 10 and light curtain switch 5, is used to judge the type of described vehicle, and described control module is according to the trigger condition of described judged result control radiation source, the time of for example sending radiation beam.Fast response light curtain switch 5 is installed on the wall and detector arm 12 of radiation source cabin body 9 of passage both sides, and optoelectronic switch 10 is installed on the fender wall 11 of passage both sides.
Judge among the embodiment of described type of vehicle to have the characteristic information and the profile information of container truck, motor van, passenger vehicle in the control module at a kind of optoelectronic switch 10 and light curtain switch 5 of utilizing.Light curtain switch 5 for example is made up of the transmitter that is installed in the passage both sides respectively and receiver two parts.Control module can be differentiated type of vehicle fast according to certain notable feature of vehicle or the partial contour feature of vehicle.When moving target sailed surveyed area in the passage 14 into, optoelectronic switch 10 was effective, started working so control module starts light curtain switch 5.The transmitter of light curtain switch 5 sends the light beam directive receptacle of some, and receiver has the sensor of respective numbers to receive the light beam that transmitter sends.Situation about being blocked according to light beam can detect the elevation information of contour of the vehicle.Along with advancing of vehicle, light curtain switch 5 constantly detects the elevation information of vehicle and passes to control module.Control module becomes the contour of the vehicle profile with the information reverting that the receiver of light curtain switch 5 transmits, and the information of vehicles that has in the information of vehicles that measures and the controller is compared, and then distinguishes type of vehicle.
Vehicle quick check equipment also comprises quick response light curtain switch 6 and is embedded in the ground induction coil 8 of being partial to Way out under the face of land of passage, is used to differentiate checked vehicles whether leave described passage and count by second counter rolling being checked vehicles in the passage away from.This second counter can be arranged in quick response light curtain switch 6 and/or the ground induction coil 8, also can be arranged in the pulpit.
Scanned imagery device can comprise: radiation source, be used for radiation beams so that the moving target of being checked such as vehicle is scanned, this radiation source is under the control of may command unit, adjust the frequency of radiation beam according to the speed of the measured vehicle of velocity radar 7, and then control is to the sweep frequency of vehicle; Detector is used to receive from being checked the radiation beam of moving target transmission; Imaging device carries out imaging according to the radiation beam from being checked the moving target transmission that detector detected; And radioprotector, the amount that is used for the radiation beam of assurance equipment periphery is limited within the allowed band, thus protection might be avoided the injury of radiation beam near the staff around the equipment.Further, this radioprotector is arranged on the fender wall 4,11 that can stop radiant rays to penetrate of passage both sides.
In the present embodiment, fender wall 4,11 upright passage 14 both sides that are contained in also are connected with detector arm 12 with the radiation source cabin body 9 of passage both sides respectively, fast response light curtain switch 6 is installed on the wall and detector arm 12 of radiation source cabin body 9 of passage both sides, this radiation source can be an x-ray radiation source, also can be other radiation source that gamma-ray radiation source etc. can the emitted radiation line.
The Control Software of control module is made up of five parts, is respectively that module, software watchdog module, abnormal conditions processing module are discerned and dodged to system management module, passage vehicle counting module, driver automatically.System management module is responsible for coordinating work, the communication with outside, the control external unit of each module.The vehicle count module can comprise first counter and second counter, correctly discerning the quantity that enters vehicle, outgoing vehicles, and calculates vehicle number in the passage thus, and the vehicle number in the passage is the important evidence that system management module is controlled.The driver discerns and dodges module automatically and is used to differentiate the position of vehicle and the type of vehicle, and this module can correctly be discerned container truck and closed lorry, and carries out different scan control by system management module according to different vehicles.The driver discerns and dodges embedded safety interlocking program in the module automatically, can monitor the radiation source duty the driver during by scanning area, can guarantee driver and conductor's safety.The software watchdog module is used to avoid system to enter abnormality, or the state that does not match with actual conditions.The abnormal conditions processing module comprises warning, case of emergency processing, personnel's intervention etc., is used to handle abnormal conditions.
In the above embodiment of the present invention, described and be respectively applied for the quick response light curtain switch 2,5,6 and the ground induction coil 3,8 that sail into or roll away from that detects vehicle, but the present invention is not limited thereto, such as, can make one of them of using up in act switch and the ground induction coil detect sailing into and rolling away from of vehicle.Need to prove that according to the characteristic of ground induction coil, when only the contact area of moving target that is moving and ground induction coil acquired a certain degree, ground induction coil just produced the signal (acknowledge signal) that detects moving target in checking passage 14.
Further, light curtain switch 2,5,6 also can be replaced by traditional photoelectric detector.Alternatively, ground induction coil 3,8 also can be by at least a replacement in photoelectric detector, piezoelectric detector, ultrasonic sensor, microwave remote sensor, the pressure transducer.
Referring to Fig. 3, according on the other hand, the present invention also provides a kind of moving target is carried out the method for quick-speed image-forming checking, comprises following step: begin to check step; (S1) judge moving target admission passage (S2) whether such as vehicle,, then start scanned imagery device and begin scrutiny program (S3) if determine the moving target admission passage; Judge the translational speed (S4) of moving target, determine the sweep frequency that scanned imagery device detects according to described translational speed, thereby carry out and the corresponding inspection of translational speed (S5).
Said method also comprises the type (S6) of judging moving target, is container truck or sealing lorry such as differentiating moving target, and carries out the inspection (S7) of predefined type according to described type, promptly adopts the different scanning trigger condition according to different automobile types.For example, lorry then goes out Shu Jinhang scanning immediately if the moving target of this moment is sealing, if container truck then postpones the regular hour, the headstock for the treatment of vehicle partly rolls the inspection area away from and container carries out scanography when arriving the inspection area.
Said method also comprises judges whether moving target leaves passage and the moving target that leaves described passage is counted (S8), wherein judge moving target whether admission passage comprises the moving target that enters described passage is counted, and relatively leave described passage moving target counting and enter the counting of the moving target of described passage, when the counting of the moving target that leaves described passage and the counting that enters the moving target of described passage equate, suspend and send radiation beam (S9).If also have other moving target just to continue to check, check otherwise suspend.
In more detail, the course of work of the present invention is as follows:
Vehicle number is that 0 o'clock system is in holding state in passage, when a car 1A sails when coming to passage, ground induction coil 3 is at first effective, and the differentiation of finishing vehicle admission passage and travel direction in conjunction with quick response light curtain switch 2, if sailing passage into, vehicle then make the count value of first counter of number of vehicles in the expression passage add 1,7 pairs of Vehicle Speed of velocity radar are measured, and system enters ready state.Vehicle continues to overtake, the state variation of the omnidistance registration of vehicle of system in the passage driving process.When vehicle with normal speed by 1A through 1B during to 1C, optoelectronic switch 10 is effective, differentiate tested vehicle by the testing result of light curtain switch 5 by control module this moment is container truck or sealing lorry, and adopts the different scanning trigger condition according to different automobile types.Lorry then goes out Shu Jinhang scanning immediately if the vehicle of this moment is sealing, if container truck then postpones the regular hour, the headstock for the treatment of vehicle partly rolls the inspection area away from and container carries out scanography when arriving the inspection area.The pulsed frequency of scanning is tested the speed in real time by 7 pairs of vehicles of real-time velocity radar and obtains, and the output frequency of velocity radar 7 can change according to the variation of Vehicle Speed in real time.When pilothouse passed through scanning area, control module was monitored the duty of radiation source in real time, guarantees that radiation source can not miss out bundle.When vehicle ' goes out scan channel, then make the count value of second counter of vehicle in the expression passage add 1.As long as the value of the count value of second counter and first counter is unequal, the scanned imagery device of checkout facility just remains on scanning mode; When the two was equal, scanned imagery device entered holding state.
What deserves to be explained is that according to technical scheme of the present invention, with the technical characterictic in the foregoing description, wherein the velocity radar in the speed-measuring method 7 can be made following technical characterictic and is equal to replacement, for example utilize keep at a certain distance away optoelectronic switch or light curtain switch to test the speed.What the replacement of these technical characterictics was taked in a word is that the formed technical scheme of technology as well known to those skilled in the art all should belong to protection scope of the present invention.
Claims (18)
1. one kind is carried out the equipment of quick-speed image-forming checking to moving target, comprising:
The passage that supplies described moving target to pass through;
Scanned imagery device, described scanned imagery device to the moving target radiation beams by described passage so that moving target is carried out imaging, thereby check;
First detecting unit is used to differentiate whether entering described passage and the moving target that enters described passage being counted of described moving target;
Second detecting unit is used to measure the translational speed of moving target in described passage; With
Control module, the detection signal that described control module enters described passage according to the relevant moving target that receives from first detecting unit is controlled second detecting unit translational speed of moving target is detected, and according to the measurement result gated sweep imaging device of second detecting unit, so that scanned imagery device is sending radiation beam with the corresponding frequency of the speed of moving target, thereby moving target is checked.
2. equipment according to claim 1 also comprises the 3rd detecting unit, is used to judge the type of described moving target, the time that described control module sends radiation beam according to the type gated sweep imaging device of the moving target that is detected.
3. equipment according to claim 1 also comprises the 4th detecting unit, is used to differentiate moving target and whether leaves described passage and the moving target that leaves described passage is counted.
4. equipment according to claim 3 wherein when control module determines that difference between the counting of the counting of first detecting unit and the 4th detecting unit is zero, makes equipment enter holding state.
5. equipment according to claim 1, wherein said first detecting unit comprises:
Be embedded in first ground induction coil below the described feeder connection face of land and the first quick response light curtain switch that is arranged on described passage both sides that is used in combination with it.
6. equipment according to claim 5, wherein said passage both sides have the installation column, and the described first quick response light curtain switch is arranged on the described column.
7. equipment according to claim 3, wherein said the 4th detecting unit comprises:
Be embedded in second ground induction coil of being partial to export below the face of land in the described passage and the second quick response light curtain switch that is arranged on described passage both sides that is used in combination with it.
8. equipment according to claim 1, wherein said second detecting unit comprises the velocity radar that is arranged on the passage both sides.
9. equipment according to claim 1, wherein said second detecting unit comprises the optoelectronic switch of the interval preset distance that is arranged on the passage both sides.
10. equipment according to claim 1, wherein said second detecting unit comprise the light curtain switch that is arranged on interval, passage both sides preset distance.
11. equipment according to claim 2, wherein said the 3rd detecting unit comprise optoelectronic switch that is arranged on the passage both sides and the 3rd quick response light curtain switch that is used in combination with it.
12. equipment according to claim 1, wherein said scanned imagery device comprises:
Radiation source is used for radiation beams so that the moving target by described passage is scanned;
Detector is used to receive the radiation beam that passes described moving target;
Imaging device, the radiation beam that passes moving target that receives according to detector carries out imaging; With
Radioprotector is used for the amount of the radiation beam of equipment periphery is limited within the allowed band.
13. equipment according to claim 12, wherein said radioprotector comprises the fender wall that is arranged on the passage both sides.
14. equipment according to claim 7, wherein said detector has detector arm, and the described second quick response light curtain switch is arranged on the detector arm.
15. according to arbitrary described equipment among the claim 1-15, wherein said moving target is a vehicle.
16. one kind is carried out the method for quick-speed image-forming checking to moving target, comprises following step:
Judge whether admission passage of moving target;
Judge the translational speed of the moving target that enters described passage;
Sending radiation beam, thereby moving target is checked with the corresponding frequency of the translational speed of moving target.
17. method according to claim 16 also comprises the type of judging moving target, controls the time of sending radiation beam according to described type.
18. method according to claim 16 also comprises judging whether moving target leaves passage and the moving target that leaves described passage is counted,
Wherein judge moving target whether admission passage comprise the moving target that enters described passage is counted,
Relatively leave described passage moving target counting and enter the counting of the moving target of described passage, when the counting of the moving target that leaves described passage and the counting that enters the moving target of described passage equate, suspend and send radiation beam.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200610170616 CN101162209B (en) | 2006-10-13 | 2006-12-22 | Equipment and method for quick-speed image-forming checking mobile target |
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| CN200610113715 | 2006-10-13 | ||
| CN200610113715.3 | 2006-10-13 | ||
| CN 200610170616 CN101162209B (en) | 2006-10-13 | 2006-12-22 | Equipment and method for quick-speed image-forming checking mobile target |
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| CN104950338A (en) * | 2014-03-24 | 2015-09-30 | 北京君和信达科技有限公司 | System and method for carrying out radiation survey on moving target |
| WO2015161717A1 (en) * | 2014-04-24 | 2015-10-29 | 北京君和信达科技有限公司 | Method and system for conducting radiative inspection on rapid-pass moving object |
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| WO2016011804A1 (en) * | 2014-07-22 | 2016-01-28 | 北京君和信达科技有限公司 | System and method for performing radiation scanning on moving target, and data information label |
| CN105445808A (en) * | 2014-08-19 | 2016-03-30 | 清华大学 | Apparatus and method for inspecting mobile target |
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