WO2018036265A1 - 一种用于车辆安全检查的成像装置及其方法 - Google Patents

一种用于车辆安全检查的成像装置及其方法 Download PDF

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Publication number
WO2018036265A1
WO2018036265A1 PCT/CN2017/090351 CN2017090351W WO2018036265A1 WO 2018036265 A1 WO2018036265 A1 WO 2018036265A1 CN 2017090351 W CN2017090351 W CN 2017090351W WO 2018036265 A1 WO2018036265 A1 WO 2018036265A1
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WIPO (PCT)
Prior art keywords
vehicle
radiation
radiation source
source device
inspected
Prior art date
Application number
PCT/CN2017/090351
Other languages
English (en)
French (fr)
Inventor
曲海波
赵杰
Original Assignee
北京华力兴科技发展有限责任公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201620947258.7U external-priority patent/CN206132670U/zh
Priority claimed from CN201610728728.5A external-priority patent/CN106290422B/zh
Application filed by 北京华力兴科技发展有限责任公司 filed Critical 北京华力兴科技发展有限责任公司
Priority to US16/327,681 priority Critical patent/US10809415B2/en
Priority to EP17842689.6A priority patent/EP3505919A4/en
Publication of WO2018036265A1 publication Critical patent/WO2018036265A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V5/00—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity
    • G01V5/20—Detecting prohibited goods, e.g. weapons, explosives, hazardous substances, contraband or smuggled objects
    • G01V5/22—Active interrogation, i.e. by irradiating objects or goods using external radiation sources, e.g. using gamma rays or cosmic rays
    • G01V5/232—Active interrogation, i.e. by irradiating objects or goods using external radiation sources, e.g. using gamma rays or cosmic rays having relative motion between the source, detector and object other than by conveyor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V5/00—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity
    • G01V5/20—Detecting prohibited goods, e.g. weapons, explosives, hazardous substances, contraband or smuggled objects
    • G01V5/22—Active interrogation, i.e. by irradiating objects or goods using external radiation sources, e.g. using gamma rays or cosmic rays
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
    • G01N23/10—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption the material being confined in a container, e.g. in a luggage X-ray scanners
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V5/00—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity
    • G01V5/20—Detecting prohibited goods, e.g. weapons, explosives, hazardous substances, contraband or smuggled objects
    • G01V5/22—Active interrogation, i.e. by irradiating objects or goods using external radiation sources, e.g. using gamma rays or cosmic rays
    • G01V5/224—Multiple energy techniques using one type of radiation, e.g. X-rays of different energies
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00—Investigating materials by wave or particle radiation
    • G01N2223/30—Accessories, mechanical or electrical features
    • G01N2223/33—Accessories, mechanical or electrical features scanning, i.e. relative motion for measurement of successive object-parts
    • G01N2223/3307—Accessories, mechanical or electrical features scanning, i.e. relative motion for measurement of successive object-parts source and detector fixed; object moves

Definitions

  • the invention is created to give priority to the utility model patent application of the security inspection system.
  • the present disclosure relates to the field of security inspection technology, and in particular to an imaging apparatus and method for vehicle security inspection.
  • the general technical inspection method for container vehicles is to place the radiation source on the side of the vehicle to be inspected. Since the radiation source needs to have a certain installation height, the minimum scanning height of the equipment is not less than 0.5m, and it is impossible to scan the complete vehicle tires and vehicles.
  • the lower toolbox or suitcase can only be solved by raising the ground height of the vehicle. Not only is the civil construction volume large, but also for many container vehicle inspection equipment application scenarios, the ground construction cannot be carried out.
  • the program has loopholes in the inspection of vehicle tires and lower toolboxes and trunks, posing a safety hazard.
  • the existing inspection technology can not achieve the driving Inspection of concealed parts such as trunks, tires, tool boxes, etc. of small passenger vehicles.
  • the inspection technical scheme has potential safety hazards and risks for inspection of small passenger vehicles.
  • the present disclosure provides an image forming apparatus for a vehicle safety inspection and a method thereof, which can solve all or part of the problems in the above prior art.
  • an imaging apparatus for vehicle safety inspection comprising: a radiation source apparatus including a first ray unit, the first ray unit emitting a first ray beam along a first predetermined opening angle, Passing the first beam of rays through a first portion of the inspected vehicle passing through the inspection channel at a preset speed; the detector device comprising a first detector unit disposed corresponding to the first beam unit, the first probe The unit is configured to receive the first beam; wherein the radiation source device is at least partially disposed on a road surface of the inspection channel, and the first detector unit is disposed on a first side of the inspection channel .
  • the radiation source device further includes: a second ray unit that emits a second ray beam along a second predetermined opening angle to cause the second ray The bundle passes through the second portion of the vehicle being inspected. Wherein the direction of the second predetermined opening angle is different from the direction of the first predetermined opening angle.
  • the detector device further includes: a second detector unit disposed corresponding to the second ray unit, the second detector unit configured to receive the second a beam of rays; wherein the second detector unit is disposed on a second side of the inspection channel.
  • the first detector unit and the second detector unit have a predetermined height.
  • the predetermined height is determined according to the first predetermined opening angle of the first beam of rays and the second predetermined opening angle of the second beam of rays and a size of the first portion and the second portion.
  • the first ray unit includes a ray source and a shield, and the shield and the collimator are used to shield the first predetermined opening angle emitted by the ray source The rays outside are constraining the width of the rays at the same time.
  • the first ray unit includes a ray source, a shield, and a collimator.
  • the shield and the collimator are configured to shield the first radiation beam emitted by the radiation source along the first predetermined opening angle and the second radiation beam emitted along a second predetermined opening angle The ray while constraining the width of the ray.
  • the second beam of rays passes through a second portion of the vehicle under test.
  • the detector device further includes: a second detector unit disposed corresponding to the second predetermined opening angle, the second detector unit configured to receive the first a second beam; wherein the second detector unit is disposed on a second side of the inspection channel.
  • a portion of the radiation source device is embedded below the road surface of the inspection channel, and another portion exposes a road surface of the inspection channel, wherein the height of the exposed portion is less than a predetermined value.
  • the preset value is related to a ground height of a chassis of the inspected vehicle.
  • the exposed portion of the radiation source device when the inspected vehicle is a first vehicle type, the exposed portion of the radiation source device has a first height, and the radiation source device emits a first energy a ray; when the vehicle to be inspected is a second vehicle type, the exposed portion of the radiation source device has a second height, and the radiation source device has an exit a ray of a second energy; wherein the first height is less than the second height, and the first energy is less than the second energy.
  • the method further includes: a first sensing component disposed on a first side of the radiation source device, configured to output a first sensing signal indicating that the inspected vehicle enters Check the channel.
  • the first sensing component includes a inductive coil embedded at an entrance of the inspection channel.
  • the method further includes: a second sensing component disposed between the first sensing component and the radiation source device for outputting a second sensing signal representation
  • the first portion of the inspected vehicle enters a radiation area of the radiation source device and controls the radiation source device to emit radiation having a first dose.
  • the second sensing component includes a first photoelectric switch group, and the first photoelectric switch group is disposed on both sides of the inspection channel and/or the inspection channel road surface.
  • the method further includes: a third sensing component disposed on the second side of the radiation source device, configured to output a third sensing signal indicating the location of the inspected vehicle
  • the first portion is driven away from the radiation area of the radiation source device and controls the radiation source device to emit radiation having a second dose; wherein the second dose is less than the first dose.
  • the third sensing component includes a second photoelectric switch group disposed on both sides of the inspection channel and/or the inspection channel road surface.
  • the method further includes: a speed sensor for measuring a moving speed of the inspected vehicle within the inspection passage.
  • the method further includes: a first delay device coupled to the speed sensor for setting a first delay time according to the moving speed and a size of the first portion; And when the second sensing component detects that the first portion of the inspected vehicle enters the radiation area of the radiation source device, after the first delay time, outputs a first control signal control station The dose of radiation emitted by the radiation source device is converted from the first dose to a second dose.
  • the method further includes: a second delay device coupled to the speed sensor for using a third speed according to the moving speed and the first portion and the vehicle to be inspected
  • the wheelbase between the portions is set to a second delay time; wherein, when the dose of the radiation emitted by the radiation source device is converted from the first dose to the second dose, after the second delay time, the output is one
  • a second control signal controls a dose of radiation emitted by the radiation source device to be converted from the second dose to the first dose.
  • the radiation source device is disposed at a center of a road surface of the inspection passage, and a target center of the first ray unit is disposed above a road surface of the inspection passage.
  • the first predetermined opening angle and the second predetermined opening angle are opposite directions, and the first detector unit and the second detector unit are oppositely disposed.
  • the method further includes: a data acquisition and imaging device coupled to the detector device, receiving first ray intensity data output by the first ray unit to generate the first portion Radiation pattern image.
  • the method further includes: a display device coupled to the data acquisition and imaging device for displaying the first radiation image of the inspected vehicle.
  • the method further includes: determining means, configured to determine, according to the first radiation image, whether the prohibited item is entrained in the first portion.
  • the method further includes: a control device coupled to the radiation source device and the detector device for controlling activation and deactivation of the radiation source device and the detector device .
  • the first detector unit and the second detector unit are line array detectors.
  • a radiation surface of the first beam of the first predetermined opening angle is perpendicular to a road surface of the inspection passage.
  • an imaging method for vehicle safety inspection comprising: passing a first beam exiting at a first predetermined opening angle through a first portion of a vehicle to be inspected passing through an inspection passage at a preset speed Receiving the first beam of rays passing through the first portion and outputting first ray intensity data; generating a first radiation image of the first portion based on the first ray intensity data; determining from the first radiation image Whether the prohibited item is entrained in the first part.
  • the method further includes: passing a second beam of rays exiting along a second predetermined opening angle through a second portion of the inspected vehicle; receiving a portion passing through the second portion Decoding a second beam of light and outputting second ray intensity data; generating a second radiation image of the second portion based on the second ray intensity data; determining, based on the second radiant image, whether the second portion is entrained or not article.
  • the direction of the second predetermined opening angle is different from the direction of the first predetermined opening angle.
  • the method further includes: when detecting that the first portion of the inspected vehicle passes the radiation area in the inspection channel, a predetermined delay time is passed, A beam of rays scans a third portion of the inspected vehicle and checks if the prohibited item is entrained in the third portion.
  • An imaging apparatus and method for vehicle safety inspection is capable of rapidly imaging a specific part of a vehicle (eg, a tire, a trunk, a trunk, a tool case, etc.) to achieve detection of the specific Whether the prohibited items are included in the part.
  • a specific part of a vehicle eg, a tire, a trunk, a trunk, a tool case, etc.
  • only a particular portion of the vehicle may be imaged without imaging other portions, such that the dose of radiation received by the occupant is minimized.
  • the left and right specific portions of the vehicle may be simultaneously imaged, and the imaged regions of the left and right specific portions are not overlapped.
  • FIG. 1 is a schematic block diagram showing an image forming apparatus for a vehicle safety inspection according to an exemplary embodiment of the present disclosure
  • FIG. 2 is a schematic block diagram showing another structure of an image forming apparatus for vehicle safety inspection according to an exemplary embodiment of the present disclosure
  • FIG. 3 is a schematic block diagram showing still another structure of an image forming apparatus for vehicle safety inspection according to an exemplary embodiment of the present disclosure
  • FIG. 4 schematically illustrates a flow chart of an imaging method for vehicle security inspection, according to an example embodiment of the present disclosure
  • FIG. 5 schematically illustrates a flow chart of another imaging method for vehicle security inspection according to an example embodiment of the present disclosure
  • FIG. 6 schematically illustrates a flow chart of still another imaging method for vehicle safety inspection, according to an example embodiment of the present disclosure.
  • An embodiment of the present disclosure first proposes an imaging apparatus for vehicle safety inspection, which uses a radiation source device mounted on a road surface of an inspection passage and a detector device on the side of the inspection passage to perform radiation imaging of a specific part of the vehicle in motion, and according to the radiation The image determines whether or not the prohibited item is entrained in the particular part.
  • the following embodiments are described by taking the specific part as the tire of the vehicle to be inspected as an example. However, it should be noted that the specific part is not limited to the tire, and may be, for example, a trunk, a tool box or a trunk of the vehicle to be inspected. Wait.
  • FIG. 1 schematically shows a schematic structural view of an image forming apparatus for vehicle safety inspection according to an exemplary embodiment of the present disclosure.
  • the imaging device 100 for vehicle safety inspection may include a radiation source device 110 and a detector device 120.
  • the radiation source device 110 may include a first ray unit 111 that emits the first ray beam S1 along a first predetermined opening angle ⁇ such that the first ray beam S1 passes through the inspection channel 130 at a preset speed.
  • the first portion of the vehicle 140 being inspected eg, the first tire 141).
  • the radiation source device 110 is at least partially disposed above the road surface 131 of the inspection channel 130.
  • a portion of the radiation source device 110 may be embedded below the road surface of the inspection channel 130, and another portion may expose the road surface 131 of the inspection channel 130, wherein the height H1 of the exposed portion is less than a predetermined value.
  • the preset value is related to the ground clearance H2 of the chassis of the vehicle under inspection 140. Where H1 is less than H2.
  • the radiation source device 110 may also be disposed entirely on the road surface 131 of the inspection channel 130 as long as it satisfies the height of the exposed ground portion that is less than the minimum ground clearance of the vehicle under inspection.
  • the radiation source device 110 may be disposed at the center of the road surface 131 of the inspection channel 130.
  • the target center of the first ray unit 111 is disposed above the road surface 131 of the inspection channel 130.
  • the radiation source device 110 is a self-contained module having self-shielding capability, except for the area for exiting the exit beam of the first beam S1, and the leakage rate is less than 2.5 ⁇ Gyh at a distance of 1.5 m from the radiation source device. -1 .
  • the radiation source device 110 can be of a sheet metal construction with an IP65 degree of protection.
  • the exposed portion of the radiation source device 110 has a first height, and the radiation source device 110 emits radiation having the first energy.
  • the first model can be a general passenger car. Since the chassis height of the universal passenger car is generally a minimum of 150 mm, it may reach 100 mm under heavy load conditions. Therefore, the first height can be set to be less than 100 mm, such as 90 mm, 80 mm, or the like.
  • the exposed portion of the radiation source device 110 has a second height, wherein the radiation source device 110 emits radiation having a second energy.
  • the first height may be less than the second height, and the first energy may be less than the second energy.
  • the second model can be a container truck, and the height of the chassis of the container truck is generally at least 300 mm. Therefore, the second height can be set to be less than 300 mm, for example, 200 mm, 150 mm, or the like.
  • the radiation energy of the tire imaging of the universal passenger car can be set lower than the radiation energy of the radiation imaging of the tire of the container car.
  • the disclosure is not limited thereto.
  • Radiation source devices with different energies and different ground heights can be set according to different models.
  • radiation source devices of corresponding specifications for different vehicle types may be fabricated, and depending on the type of vehicle being inspected, the replacement of the radiation source device may satisfy replacement of tire inspections for different vehicle models.
  • an adaptively adjustable radiation source device can be fabricated, and the ground height of the chassis of the inspected vehicle can be detected by a vehicle chassis height sensor, and then according to the detected ground height of the inspected vehicle.
  • the adapted modulating radiation source device exposes the height of the pavement portion and/or the emitted ray energy.
  • the detector device 120 can include a first detector unit 121 disposed corresponding to the first ray unit 111, and the first detector unit 121 can be configured to receive the first ray beam S1.
  • the imaging area of the first detector unit 121 can be set to 1.2 meters.
  • the height of the specific imaging area can be adjusted according to system requirements, for example, according to the size of the tire of the vehicle to be inspected, the position of the trunk, the trunk, the tool box, and the outgoing radiation of the radiation source device.
  • the size of the opening angle, the distance between the radiation source device and the detector device, and the distance between the tire and the radiation source device are selected.
  • the height of the imaging area of the first detector unit may be set to meet the requirements for full imaging of the maximum size of the tire of the vehicle under inspection.
  • the first detector unit 121 has a detection height of 0-0.65 meters.
  • the height of the inspection here refers to the height of the ground of the imaging area of the first detector unit 121.
  • the target center of the first ray unit 111 is level with the road surface 131 of the inspection channel 130, and the radiation source device 110 is exposed to the ground height of not more than 80 mm.
  • the first detector unit 121 is mounted close to the road surface 131 of the inspection channel 130, and can be inspected.
  • the "0" distance above the ground of the tire of the vehicle is checked. By scanning the tire of the vehicle under test, it is checked whether the smuggling or carrying of prohibited items is carried out by the tire.
  • the tire of the vehicle to be inspected is taken as an example to illustrate that the inspection height of the first detector unit 121 is 0, but the inspection height can be adjusted according to the specific part to be inspected, for example, due to the luggage. If the height of the ground of a specific part such as a toolbox is not 0, the corresponding height of the inspection can be set according to the height of the ground of the trunk, the toolbox, and the like.
  • the detector device 120 can adopt a sheet metal structure, which can meet the requirements of outdoor use, ventilation, heat preservation, rainproof and the like.
  • the first detector unit 121 is disposed on a first side of the inspection channel 130.
  • the first detector unit 121 is disposed on the right side of the inspection passage 130 with respect to the driver of the vehicle under inspection.
  • the present disclosure is not limited thereto, and the first detector unit 121 may be disposed on the left side as long as it can receive the beam of the tire passing through the tire on the side of the vehicle under inspection.
  • the first ray unit 111 includes a ray source, a shield, and a collimator.
  • the shield and the collimator are used to shield rays other than the first predetermined opening angle ⁇ emitted by the radiation source while constraining the width of the rays.
  • the constrained rays may have a width of 3-5 mm. In other embodiments, the width of the constrained rays may also be from 5 mm to 18 mm. According to the needs of the system, the corresponding collimator can be selected to obtain the ray of the corresponding width.
  • the first ray unit 111 may employ a ray source that emits radiation in a circumferential direction.
  • the shield is capable of shielding all of the rays emitted by the radiation source other than the first beam S1 emitted along the first predetermined opening angle ⁇ , thereby reducing the amount of radiation of the radiation source to the occupant.
  • the source of radiation may employ an isotope source.
  • the first ray unit 111 may also employ a first X-ray machine.
  • X-ray machines generally have a maximum energy of several hundred KeV, which can meet the penetration requirements of tires.
  • the first ray Unit 111 can also employ an X-ray accelerator.
  • the first ray unit 111 is a point X-ray source that radiates fan-shaped X-rays in a first predetermined opening angle a range.
  • the radiant energy of the ray unit ranges from 60 to 180 KeV.
  • any radiation source capable of imaging the tire of the vehicle to be inspected belongs to the protection scope of the present disclosure, and the specific radiant energy can be comprehensively selected according to factors such as the model of the vehicle to be inspected, the material and thickness of the tire, and the like.
  • a radiation source having a radiant energy of 80 keV may be selected; when the vehicle to be inspected is a container vehicle, a radiation source having a radiant energy of 160 keV may be selected.
  • the preset speed of the inspected vehicle 140 may be 5 km/h-20 km/h.
  • a reminder sign may be set at a place before the inspected vehicle enters the detection channel to remind the driver to decelerate to the speed range in advance.
  • the first beam S1 of the first predetermined opening angle ⁇ is perpendicular to the road surface 131 of the inspection channel 130 such that the first beam S1 is incident perpendicularly to the first detector unit 121.
  • the disclosure is not limited thereto.
  • the radiating surface of the first beam S1 emitted by the radiation source device 110 may have a certain angle with the road surface 131 of the inspection channel 130.
  • the first beam S1 emitted by the radiation source device 110 may also be parallel to the road surface 131 of the inspection channel 130 as long as it can ensure complete radiation imaging of the tire of the vehicle under inspection.
  • the apparatus 100 may further include: a first sensing component (not shown), the first sensing component may be disposed on a first side of the inspection channel 130 (eg, the inspection channel 130 On the inlet side, the first sensing component can be used to detect whether the inspected vehicle 140 enters the inspection channel 130.
  • the first sensing component detects that the inspected vehicle 149 enters the inspection channel 130
  • the first transmission is output.
  • the sense signal is sent to the device 100 for notifying the device 100 that a vehicle has entered the inspection channel 130.
  • the first sensing component includes a grounded coil embedded at an entrance of the inspection channel 130.
  • a bypass gate, a traffic light, etc. may be provided at the entrance of the inspection passage, and the driver can judge whether or not the inspection passage can be entered through the opening of the barrier and the indication of the traffic light.
  • the first tire 141 of the inspected vehicle 140 is pressed to the sense coil, the railing of the barrier is lifted, the traffic signal turns green, and the inspected vehicle begins to enter the inspection passage.
  • the apparatus 100 may further include a license plate recognition device that simultaneously records the license plate information when the inspected vehicle enters the inspection passage.
  • the method further includes: a second sensing component disposed between the first sensing component and the radiation source device 110 for outputting the second sensing signal to represent the first of the inspected vehicle 140
  • the tire 141 enters the radiation area of the radiation source device 110 and controls the radiation source device 110 to emit radiation having a first dose.
  • the second sensing assembly includes a first photoelectric switch group disposed on both sides of the inspection channel 130 and/or the road surface 131 of the inspection channel 130.
  • the radiation source device 110 starts to start the bundle.
  • the first photoelectric switch group uses a light curtain or a cross-photoelectric signal and confirms the arrival of the vehicle through the ground sensing signal of the ground-sensing coil, and starts radiation scanning.
  • a third sensing component disposed on a second side of the inspection channel 130 (eg, an exit side of the inspection channel 130) for outputting a third sensing signal indicative of the vehicle under inspection 140
  • the first tire 141 is driven away from the radiation area of the radiation source device 110 and controls the radiation source device 110 to emit radiation having a second dose.
  • the third sensing assembly includes a second photoelectric switch group disposed on both sides of the inspection channel 130 and/or the road surface 131 of the inspection channel 130.
  • the second dose is less than the first dose.
  • the first dose can at least satisfy the requirement that the first beam S1 passes through the first tire radiation imaging of the inspected vehicle, and the radiation source can be lowered when the first tire of the inspected vehicle exits the radiation area of the radiation source device.
  • the emission dose to reduce the amount of radiation to the driver and passenger.
  • the second dose may be zero, that is, when the third sensing component detects that the first tire being scanned has been driven away from the radiation area, the radiation source device 110 may be controlled to be turned off, and the beam is stopped. For example, after the first tire of the inspected vehicle 140 passes the second photoelectric switch group, the radiation source device 110 stops the beam.
  • the two sides (left and right sides) of the inspection channel 130 respectively have mounting posts, and the first photoelectric opening group and/or the second photoelectric switch group may be disposed above the column.
  • the first optoelectronic light-emitting group and/or the second photoelectric switch group may be mounted on a road surface of the inspected channel 130 through which the inspected vehicle 140 passes.
  • the grounding height of the first photoelectric switch group and the second photoelectric switch group is approximately the ground height of the chassis of the tested vehicle 140, such that when the photoelectric switch group transmits signals When it is occluded, it can be judged that it is the tire of the vehicle to be inspected, not the vehicle body, and the tire of the inspected vehicle can be judged when it is close to the radiation source device.
  • the distance between the radiation source device 110 and the first sensing component is equal to or slightly greater than the radius of the tire of the vehicle under inspection 140. In other embodiments, the second sensing component is closer to the radiation source device 110 and slightly away from the first sensing component. In some embodiments, the distance between the radiation source device 110 and the third sensing component is equal to or slightly greater than the diameter of the tire of the vehicle under inspection 140.
  • the device 100 controls the radiation source device 110 to re-open the radiation or convert from the second dose to the first dose to perform the radiation of the third tire. Imaging.
  • the third sensing component detects that the third tire is driving away from the radiation area of the radiation source device 110, the system controls the radiation source device 110 to switch from the first dose to the second dose, stopping the emission or subtracting Small doses.
  • the radiation source device 110 begins to initiate the beam. After the rear tire of the inspected vehicle 140 passes through the second photoelectric switch group, the radiation source device 110 stops the beam. When the last tire is detected, the ray is turned off and the detection ends. The system controls the gate to fall, restricting the next car from entering the inspection channel. The operator is judged the vehicle image time, and after the operator presses the enter key, the system enters the next car to be inspected.
  • the above description is made by taking two tires in front and rear of the vehicle under test 140 as an example.
  • the above detection, radiation, stop beam discharge/reduction of radiation dose, re-detection, re-radiation can be performed cyclically according to the number of tires before and after the vehicle to be inspected. Then, the process of releasing/reducing the radiation dose is stopped until all the tires on at least one side of the vehicle to be inspected are inspected.
  • some of the vehicles to be inspected may have front, middle, and rear tires, and the radiation imaging process may be performed three times in accordance with the above process.
  • the present disclosure does not limit the number of tires of the vehicle to be inspected.
  • the ground sensing coil and the photoelectric switch group are used to detect that the tire of the inspected vehicle enters or leaves the radiation area, but the disclosure is not limited thereto, and may also be, for example, an infrared emitting device. Any detectable device such as a visible light emitting device, an electromagnetic signal transmitting device, or an ultrasonic transmitting device may be used instead of or in any combination thereof.
  • the apparatus 100 further includes a speed sensor for measuring a moving speed of the inspected vehicle within the inspection passage.
  • the speed sensor includes a speed measuring radar disposed on both sides of the inspection channel 130.
  • the system controls reconstruction of the radiation image of the tire of the vehicle under inspection 140 based on the speed of movement of the vehicle under inspection 140 received from the speed sensor, and corrects the radiation image data according to the moving speed. .
  • the apparatus 100 further includes: a first delay device coupled to the speed sensor for setting a size according to the moving speed and the size of the first tire The first delay time T1.
  • a first delay device coupled to the speed sensor for setting a size according to the moving speed and the size of the first tire The first delay time T1.
  • the device 100 calculates that the currently inspected vehicle 140 passes the radiation source device 110 by detecting factors such as the real-time vehicle speed of the currently inspected vehicle 140 entering the inspection channel 130 and the size of the scanned tire of the current inspected vehicle 140.
  • the time taken by the radiant area is set to be greater than or equal to the calculated used time, and the time from the detection of the scanned tire entering the radiant area is started, and it is determined whether T1 is reached or not.
  • the device 100 determines that the scanned tire has completely passed through the radiation area.
  • the device 100 controls the radiation source device 110 to reduce the radiation amount to the second dose or stop the beam to reduce the scanning of the useless object. Additional exposure dose for small riders.
  • a second delay device coupled to the speed sensor for using a third portion (eg, the first portion of the first tire 141 and the inspected vehicle 140 according to the moving speed
  • the wheelbase between the rear tires on the same side of the tire hereinafter referred to as the third tire, is set to a second delay time.
  • the wheelbase between the first tire 141 and the third tire is, for example, a linear distance between the center origins of the front and rear tires. Calculating the time taken for the first tire 141 to move away from the radiation source device 110 and the third tire to enter the radiation source device 110 according to the real-time vehicle speed of the inspected vehicle 140 and the wheelbase between the front and rear tires.
  • the second delay time T2 is equal to or less than the calculated used time, and the device 100 controls the radiation source device 110 to turn the radiation back on, and performs radiation imaging of the latter tire, that is, the third tire.
  • the embodiment of the present invention uses a low dose of radiation for the cockpit to check, so that the cockpit receives a very low dose of radiation, so the driver does not have to get off the vehicle, and the part of the tire is inspected with a high dose of radiation to obtain the target portion. Clear image.
  • the emitted radiation dose may be lowered or even the radiation source device may be turned off, but in other embodiments, the detected vehicle is detected.
  • the first tire starts until all the tires on the same side (for example, the right side) of the inspected vehicle are detected, the radiation dose of the radiation source device does not change, that is, the specificity between the two tires on the same side of the vehicle to be inspected Radiation imaging is performed on all parts, so that it is possible to detect whether prohibited items are carried in specific parts such as tires, tool boxes, and trunks.
  • the apparatus 100 further includes: a data acquisition and imaging device coupled to the detector device, receiving the first ray intensity data output by the first ray unit 111 to generate a first of the first tire 141 Radiation image.
  • the apparatus 100 further includes: an image capturing device for collecting vehicle information, the image capturing device may be mounted above the inspection channel, capturing an image of the vehicle body of the inspected vehicle 140, and may be used for a vehicle Identification of license plates, etc.
  • the apparatus 100 further includes a display device coupled to the data acquisition and imaging device for displaying the first radiation image of the inspected vehicle 140.
  • the apparatus 100 further includes: storage means for storing the radiation image information of the tires of the same inspected vehicle and the license plate information in association with each other to facilitate the search for the comparison work in the future.
  • the display device may simultaneously display a radiation image of the inspected vehicle and other information of the inspected vehicle (eg, a license plate number), and simultaneously transmit and save the radiation image and the vehicle information using an associated technique.
  • a radiation image of the inspected vehicle and other information of the inspected vehicle eg, a license plate number
  • the method further includes: determining means for determining whether the prohibited item is entrained in the first tire 141 according to the first radiation image. In some embodiments, when the judging device judges that the first tire of the inspected vehicle has a prohibited item, the red alarm light can be assisted to simultaneously activate the alarm function.
  • the radiation source device emits a beam of radiation that penetrates the tire of the vehicle under inspection and is received by the detector device on the other side. Since the density of different objects is different, the degree of absorption of the rays is different, and the signal output of the detector device is also different. After the signals of different strengths and weaknesses are processed by the data acquisition and imaging device, the radiation image of the tire of the inspected vehicle is Displayed on the computer screen in real time. Different items have different shapes and densities. Therefore, the tires are obviously different from the mechanical and electronic devices in the radiation image in the radiation image. By viewing the radiation images, it is possible to quickly identify whether the prohibited items are contained in the vehicle tires.
  • the general vehicle tire is empty, and there is no other thing under normal circumstances.
  • the warning information can generally be directly issued, and the inspection is considered to be the inspection. There are prohibited items in the tires of the vehicle.
  • the range of the radiation intensity data corresponding to the common tire may be pre-stored in the storage unit of the device, when the device receives When the ray intensity data of the tire of the vehicle to be inspected is analyzed, the detected ray intensity data is analyzed, and if the detected data does not match the data range stored in the storage unit, that is, the data whose detection data is not stored in the storage unit Within the range, an abnormality is indicated, and it is judged that the prohibited item may be caught in the tire of the inspected vehicle.
  • control device coupled to the radiation source device 110 and the detector device 120 for controlling activation and deactivation of the radiation source device 110 and the detector device 120.
  • the control device can be a programmable controller.
  • the radiation source device 110, the detector device 120, the sensing component, and the like are connected to the programmable controller by wire or wirelessly.
  • control device is a small cabinet mounted to the side of the detector device 120 with an Ethernet interface.
  • each module of the radiation source device 110, the detector device 120, the control device, and the like are independently closed, and the connection between the modules is plug-in type, no wiring is required, and only the corresponding radiation source device needs to be replaced according to the vehicle type. , you can switch to the universal passenger car tire imaging device or the container vehicle tire imaging device. An image capturing device or the like is mounted on the detector device and the control device as much as possible to reduce the interface with the field.
  • the device 100 may further include a power supply accessory for independently powering each module for easy maintenance.
  • the apparatus 100 may further include data analysis means for performing data analysis and data mining on all data of the inspected vehicle.
  • the apparatus 100 can also provide a data interface that can be integrated into a customer's existing business management system.
  • the imaging device for vehicle safety inspection utilizes the radiation radiation imaging technology to focus on the scanning inspection of the vehicle tire, has strong pertinence, clear target, and low false positive rate; the vehicle tire can be quickly inspected,
  • the device adopts the fully automatic scanning mode, and the driver can directly drive the vehicle through the inspection channel without the need of personnel operation, without parking.
  • the inspection speed is fast, the vehicle to be inspected can travel at a speed of 5km/h-20km/h, and the detection is completed within a few seconds; the device can be operated 24 hours a day.
  • the modular structure design of the device has a small footprint.
  • customized solutions can be provided according to customer needs and site conditions; the scanning system has clear objectives, simple and reliable operation, and can focus on the position of passenger car and container vehicle tires. Security check.
  • FIG. 2 illustrates a schematic structural view of another imaging apparatus for vehicle safety inspection according to an exemplary embodiment of the present disclosure.
  • the imaging device 200 for vehicle safety inspection includes a radiation source device 210 and a detector device 220.
  • the radiation source device 210 includes a first ray unit 211 and a second ray unit 212
  • the first ray unit 211 exits the first ray beam S1 along a first predetermined opening angle ⁇ such that the first ray beam S1 passes through the first tire 241 of the inspected vehicle 240 passing through the inspection channel 230 at a preset speed
  • the second ray unit 212 emits the second beam S2 along the second predetermined opening angle ⁇ to pass the second beam S2 through A second portion of the inspected vehicle (eg, second tire 242).
  • the first predetermined opening angle ⁇ is related to the diameter of the first tire 241, the distance between the first tire 241 and the first ray unit 211, which is to satisfy or approximately satisfy that the first ray beam S1 can completely pass through the first The vertical cross section of the tire 241.
  • the second predetermined opening angle ⁇ is related to the diameter of the second tire 242, the distance between the second tire 242 and the second ray unit 212, which is to satisfy or approximately satisfy that the second ray beam S2 can completely pass through the The vertical cross section of the second tire 242.
  • both the first ray unit 211 and the second ray unit 212 employ an X-ray machine.
  • the X-ray machine of the corresponding model can be selected according to the model of the vehicle to be inspected. For example, when the vehicle to be inspected is a general-purpose passenger car, VJ-IXS0808 (80KV, 80W) can be used; when the vehicle to be inspected is a container truck, VJ-IXS1820 (160KV, 200W) can be used.
  • the two X-ray machines are arranged in a back-to-back manner.
  • the first ray unit 211 includes a ray source and a shield for shielding the ray out of the first ray beam S1 and the second ray beam S2.
  • the radiation source may be placed in the shielding body as a radiation source, and the shielding body may be provided with a ray collimator.
  • the shielding body can be made of a lead plate material.
  • the direction of the first predetermined opening angle is opposite to the direction of the second predetermined opening angle ⁇ .
  • the first predetermined opening angle ⁇ is toward the right side of the vehicle 240 to be inspected
  • the second predetermined opening angle ⁇ is directed to the left side of the vehicle 240 to be inspected.
  • the disclosure is not limited thereto.
  • the radiation source device 210 is at least partially disposed above the road surface 231 of the inspection channel 230 such that the target of the radiation source is exposed to the road surface, and the radiation source device 210 is located at the center of the road surface of the inspection channel 230.
  • the disclosure is not limited thereto.
  • the detector device 220 includes a first detector unit 221 disposed corresponding to the first ray unit 211 and a second detector unit 222 disposed corresponding to the second ray unit 212.
  • the first detector unit 221 is configured to receive the first detector unit 221 A first beam S1 of a tire 241 for receiving a second beam S2 through the second tire 242.
  • the first detector unit 221 is disposed on a first side (eg, the right side) of the inspection channel 230 and the second detector unit 222 is disposed on a second side 233 (eg, the left side) of the inspection channel 230.
  • the first detector unit 221 and the second detector unit 222 are oppositely disposed.
  • the present disclosure is not limited thereto as long as it can receive a beam of rays passing through the tires on the left and right sides of the vehicle to be inspected, respectively.
  • the first detector unit 221 and the second detector unit 222 have a predetermined height, wherein the predetermined height is based on a first predetermined opening angle ⁇ of the first beam S1 and a second beam S2
  • the two predetermined opening angles ⁇ and the first tire 241 and the second tire 242 are sized to ensure that both the left and right tires of the inspected vehicle 240 are completely radiated.
  • the distance between the inner surfaces of the first tire 241 and the second tire 242 is 1271.39 mm, and the distance between the outer surfaces of the first tire 241 and the second tire 242 is 1865.74 mm,
  • the diameters of the first tire 241 and the second tire 242 of the inspection vehicle 240 are both 659.72 mm, and the distance between the left and right sides of the detected passage 230 is 3211.97 mm, and the first tire 241 and the second tire 242 are symmetric with respect to the radiation source device 210.
  • the first predetermined opening angle ⁇ and the second predetermined opening angle ⁇ may be set to be 40 degrees, and the heights of the detection regions of the first detector unit 221 and the second detector unit 222 are set to be about 1205.20 mm.
  • the above data is based on the ideal situation, and the actual application site may be inaccurate. And the above data is given according to the specifications of the general passenger car, and the corresponding data range can be selected for different specifications of the car.
  • first detector unit 221 and second detector unit 222 are line array detectors. It detects a one-dimensional X-ray intensity distribution by means of light receiving elements arranged in the longitudinal direction of the two line sensor.
  • the first detector unit 221 and the second detector unit 222 are plural, respectively disposed at different heights for detecting the upper, middle, and lower portions of the tire of the inspected vehicle 240.
  • the first detector unit 221 and the second detector unit 222 employ a single row, double row, or multiple rows of scintillator structures.
  • the scintillator may be at least one of cadmium tungstate scintillation crystal, antimony doped cesium iodide scintillation crystal or strontium ruthenate scintillation crystal.
  • the first detector unit 221 and the second detector unit 222 also include a photomultiplier tube coupled to the scintillator. Of course, other types of detectors are also within the scope of the present disclosure.
  • the radiation faces of the first beam S1 of the first predetermined opening angle ⁇ and the second beam S2 of the second predetermined opening angle ⁇ are both perpendicular to the road surface 231 of the inspection channel 230.
  • the control device when the first sensing component and the second sensing component detect that the front axle left tire, the right tire (ie, the first tire 241 and the second tire 242) of the inspected vehicle 240 are in proximity to the radiation source device 210
  • the first detector unit 221 and the second detector unit 222 respectively receive the first beam S1 and the second beam S2 on both sides, Generating a first radiation image of the front axle left tire and a second radiation image of the front axle right tire according to the received first beam S1 and the second beam S2, respectively; when the third sensing component detects the vehicle 240 being inspected
  • the control device issues a control signal to control the radiation source device 210 to emit the radiation having the second dose or to stop the beam.
  • the control device issues a control signal to control the radiation source device 210 to emit radiation having a first dose, and the first detector unit 221 and the second detector unit 222 respectively receive the first beam S1 and the second beam S2 on both sides, according to the receiving
  • the first beam S1 and the second beam S2 are respectively generated to generate a third radiation image of the rear axle left tire and a fourth radiation image of the rear axle right tire; when the third sensing component detects the rear axle of the inspected vehicle 240
  • the control device issues a control signal to control the radiation source device 210 to emit a radiation having a second dose or to stop the beam. Until all the tires of the inspected vehicle 240 are detected.
  • the first delay device and the second delay device in the above-described embodiments may also be used to control the opening and closing of the radiation source device 210 and the detector device 220, thereby making the front axle of the vehicle to be inspected. Time-division radiation imaging of the rear axle tires.
  • first”, “second”, “third”, “fourth” and the like in the embodiments of the present disclosure are not used to limit the number or to limit the order, for example, the first tire 241 does not. It must include only one tire, possibly two tires or even multiple tires; the first tire 241 may be any tire in the vehicle under inspection 240.
  • the fan-shaped first beam and the second beam emitted from the bottom of the vehicle to the two sides of the vehicle to be inspected are respectively installed after being inspected by penetrating the first tire/third tire and the second tire/fourth tire on both sides.
  • the first detector unit and the second detector unit on both sides of the channel are received. Since the density of different parts of the article is different, the degree of absorption of the rays is different, and the signal output of the detector unit is also different.
  • the outline of the articles inside the tire is displayed on the computer screen. And the form, so as to determine whether the prohibited items are entrained in the respective tires of the inspected vehicle.
  • An imaging device for vehicle safety inspection provided by an embodiment of the present invention, by arranging two detector units symmetrically on the left and right sides of the inspection channel, each side of which only radiates images of one side of the tire, so that the radiation of the left and right tires can be made The images do not overlap.
  • the radiation source device at the intermediate position of the road surface of the inspection passage, the left and right tires are approximately symmetrical with the radiation source device, so that the radiation image magnification ratios of the left and right tires are close to or the same.
  • the radiation source device is turned on, and when the left and right tires are driven away from the radiation area, the beam is stopped or the emission dose is reduced, so that only the tire area can be imaged without imaging other parts, so that The dose of exposure received by the occupants is minimized to ensure the safety of the system.
  • FIG. 3 schematically shows a schematic structural view of still another imaging apparatus for vehicle safety inspection according to an exemplary embodiment of the present disclosure.
  • an imaging apparatus 300 for vehicle safety inspection includes a radiation source apparatus and a detector apparatus.
  • the radiation source device comprises a first ray unit 311 and a second ray unit 312, the first ray unit 311 exits the first ray beam at a first predetermined opening angle to enable the first ray beam to pass through the inspection channel at a preset speed The first tire of the inspected vehicle; the second beam unit 312 exits the second beam of rays at a second predetermined opening angle to pass the second beam of rays through the second tire of the inspected vehicle.
  • the detector device includes a first detector unit 321 disposed corresponding to the first ray unit 311 and The second ray unit 312 is correspondingly disposed with a second detector unit 322, the first detector unit 321 is configured to receive the first beam of rays passing through the first tire, and the second detector unit 322 is configured to receive through The second beam of the second tire.
  • the radiation source device is at least partially disposed on the road surface of the inspection channel
  • the first detector unit 321 is disposed on the first side of the inspection channel
  • the second detector unit 322 is disposed on the second surface of the inspection channel side.
  • the first ray unit and the second ray unit of FIG. 2 are disposed next to each other, and the first detector unit and the second detector unit are oppositely disposed, and
  • the first ray unit and the second ray unit are separated by a predetermined distance L along the length direction of the inspection channel, and correspondingly, the first detector unit and the second detector unit are also along the inspection.
  • the length direction of the channel is set apart by the preset distance L.
  • the first side of the first ray unit 311 is provided with its corresponding first sensing component and second sensing component for outputting a sensing signal indicating the first tire or the third tire of the inspected vehicle (for example, right The front and rear two tires) enter the inspection channel, and the device 300 controls the first ray unit 311 and the first detector unit 321 to open the radiation imaging operation of the first tire or the third tire; the second side of the first ray unit 311 Provided with a corresponding third sensing component for outputting a sensing signal indicating that the first tire or the third tire of the inspected vehicle is driving away from the inspection channel, and the device 300 controls the first radiation unit 311 and the first detector unit 321 stops the radiation imaging work of the first tire or the third tire.
  • the second side of the second ray unit 312 is provided with its corresponding first sensing component and second sensing component for outputting a sensing signal representing the second tire or the fourth tire of the inspected vehicle (eg, left The front and rear tires of the side enter the inspection channel, and the system controls the second ray unit 312 and the second detector unit 322 to open the radiation imaging operation of the second tire or the fourth tire; the second side of the second ray unit 312 is set There is a corresponding third sensing component for outputting a sensing signal indicating that the second tire or the fourth tire of the inspected vehicle is driving away from the inspection channel, and the system controls the second ray unit 312 and the second detector unit 322 to stop. Radiation imaging of a second or fourth tire.
  • the first ray unit 311 and the second ray unit 312 are both disposed at an intermediate position of the road surface of the detected passage.
  • the disclosure is not limited thereto, and may be disposed on a certain side of the road surface of the inspection channel.
  • the imaging device for vehicle safety inspection provided by the embodiment of the present invention sets the first ray unit and the second ray unit at a certain distance, for example, first scans the right front tire of the inspected vehicle, and after a certain period of time, The left front tire of the inspected vehicle is radially imaged by the second ray unit, which further reduces the amount of radiation to the occupants.
  • FIGS. 1-3 are merely examples of the image forming apparatus for vehicle safety inspection according to the present disclosure, and the present disclosure is not limited thereto.
  • FIG. 4 schematically illustrates a flow of an imaging method for vehicle security inspection according to an example embodiment of the present disclosure. Cheng Tu.
  • step S12 the first beam exiting at the first predetermined opening angle passes through the first portion of the inspected vehicle passing through the inspection passage at a preset speed.
  • the first portion may be the first tire of the inspected vehicle, and the first tire may be any front or rear tire on the right or left side of the vehicle to be inspected.
  • step S14 the first beam is received and the first ray intensity data is output.
  • step S16 a first radiation image of the first portion is generated based on the first ray intensity data.
  • step S18 it is determined whether the prohibited item is entrained in the first portion according to the first radiation image.
  • the method further includes: when detecting that the first portion of the inspected vehicle passes the radiation area in the inspection channel, after a predetermined delay time, scanning the first beam Describe the third part of the inspected vehicle and check if the prohibited item is entrained in the third part.
  • the third portion may be a third tire of the inspected vehicle, and the third tire may be a rear tire on the same side of the first tire.
  • FIG. 5 schematically illustrates a flow chart of an imaging method for vehicle security inspection, in accordance with an example embodiment of the present disclosure.
  • step S22 the first beam that exits along the first predetermined opening angle and the second beam that exits along the second predetermined opening angle pass through the inspection passage through the inspection passage at a preset speed. Check the first and second parts of the vehicle.
  • first portion and the second portion may be the first tire and the second tire of the vehicle to be inspected, respectively, and the first tire and the second tire may be the front axle and the left and right sides of the vehicle to be inspected. Tires.
  • step S24 the first beam and the second beam are respectively received and the first ray intensity data and the second ray intensity data are respectively output.
  • step S26 a first radiation image of the first portion and a second radiation image of the second portion are generated according to the first ray intensity data and the second ray intensity data, respectively.
  • step S28 it is determined whether the prohibited items are entrained in the first portion and the second portion according to the first radiation image and the second radiation image, respectively.
  • step S210 the first beam and the second beam are simultaneously passed through the third portion and the fourth portion of the vehicle to be inspected, respectively.
  • the third portion and the fourth portion may be the third tire and the fourth tire of the vehicle to be inspected, respectively, and the third tire and the fourth tire may be the rear axle of the vehicle to be inspected Two tires.
  • step S212 the first ray beam and the second ray beam are respectively received and the third ray intensity data and the fourth ray intensity data are respectively output.
  • step S214 a third radiation image of the third portion and a fourth radiation image of the fourth portion are generated from the third ray intensity data and the fourth ray intensity data, respectively.
  • step S216 whether the prohibited article is entrained in the third portion and the fourth portion is determined according to the third radiation image and the fourth radiation image, respectively.
  • steps S28 and S216 may be combined into one step, that is, until the radiation images of all the tires of a vehicle to be inspected are acquired, and then it is judged whether or not the prohibited articles are entrained in the respective portions.
  • FIG. 6 schematically illustrates a flow chart of an imaging method for vehicle security inspection, in accordance with an example embodiment of the present disclosure.
  • step S32 the first beam exiting at the first predetermined opening angle passes through the first tire of the inspected vehicle passing through the inspection passage at a preset speed.
  • step S34 the first beam of rays is received and the first beam intensity data is output.
  • step S36 a first radiation image of the first tire is generated based on the first ray intensity data.
  • step S38 it is determined whether the prohibited item is entrained in the first tire according to the first radiation image.
  • step S310 the second beam of rays exiting along the second predetermined opening angle passes through the second tire of the vehicle under test.
  • direction of the second predetermined opening angle is different from the direction of the first predetermined opening angle.
  • step S312 the second beam of rays is received and the second beam intensity data is output.
  • step S314 a second radiation image of the second tire is generated based on the second ray intensity data.
  • step S316 it is determined whether the prohibited item is entrained in the second tire according to the second radiation image.
  • the imaging apparatus for vehicle safety inspection of the present disclosure and a method thereof, it is possible to quickly check whether or not a prohibited article is entrained in a tire of a running vehicle by radiation imaging.
  • Different radiation source modules can be set for different models, with a focus on safety inspections for passenger cars and container vehicle tires.

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Abstract

一种用于车辆安全检查的成像装置及其方法，属于安全检查领域。其中用于车辆安全检查的成像装置（100）包括：辐射源装置（110），包括第一射线单元（111），第一射线单元（111）沿第一预定张角出射第一射线束（S1），以使第一射线束（S1）穿过以预设速度通过检查通道（130）的被检车辆（140）的第一部分；探测器装置（120），包括与第一射线单元（111）对应设置的第一探测器单元（121），第一探测器单元（121）用于接收第一射线束（S1）。其中，辐射源装置（110）至少部分地设置于检查通道（130）的路面（131）之上，第一探测器单元（121）设置于检查通道（130）的第一侧。该用于车辆安全检查的成像装置及其方法可以实现车辆中特定部位是否藏匿违规物品的安检工作。

Description

一种用于车辆安全检查的成像装置及其方法
本公开要求申请日为2016年8月25日、申请号为CN201610728728.5、发明创造名称为安检系统及其方法的发明专利申请以及申请日为2016年8月25日、申请号为CN201620947258.7、发明创造名称为安检系统的实用新型专利申请的优先权。
技术领域
本公开涉及安全检查技术领域，具体而言，涉及一种用于车辆安全检查的成像装置及其方法。
背景技术
随着打击走私和安全的需要，世界范围内都在研究如何使用更先进的技术来保障社会的安全，打击走私、恐怖犯罪活动。
以货运或客运车辆为工具，在车辆内部、轮胎等隐蔽位置藏匿走私物、武器、爆炸物等违禁品，从而躲避检查，进入政府部门、重要场馆、海关等区域进行犯罪活动，具有隐蔽性强的特点，靠传统人工检查的方法，不但效率低、速度慢，投入大量人力、物力，而且准确性差，因此迫切需要一种在车辆通行中，能够快速捕捉到车辆隐蔽部位图像，从而发现违禁物品的系统，可广泛应用于海关、政府机关、安全部门、监狱、会场、比赛场馆、机场、饭店、银行、港口、核电站等地方的安全检查。
目前通用的集装箱车辆检查技术方案是将辐射源置于被检车辆侧面进行成像，由于辐射源需要有一定的安装高度，因此设备最低扫描高度不小于0.5m，无法扫描到完整的车辆轮胎及车辆下部工具箱或行李箱，为此只能通过抬高车辆通行地面高度来解决，不但土建施工量大，而且对于很多集装箱车辆检查设备应用场景中，无法进行地面施工，为此目前通用的检查技术方案对车辆轮胎及下部工具箱、行李箱的检查存在漏洞，带来安全隐患。
同时，目前在车辆通行中进行辐射成像的检查技术，为了保障人员安全，必须避让驾驶室后进行扫描，而小型客运车辆驾驶室后排也会有人员，因此现有检查技术无法实现对行驶中小型客运车辆的后备箱、轮胎、工具箱等隐蔽部位的检查，目前检查技术方案对小型客运车辆检查存在安全隐患和风险。
因此，需要一种新的用于车辆安全检查的成像装置及其方法。
在所述背景技术部分公开的上述信息仅用于加强对本公开的背景的理解，因此它可以包括不构成对本领域普通技术人员已知的现有技术的信息。
发明内容
本公开提供一种用于车辆安全检查的成像装置及其方法，能够解决上述现有技术中的全部或者部分问题。
本公开的其他特性和优点将通过下面的详细描述变得显然，或部分地通过本公开的实践而习得。
根据本公开的一个方面，提供一种用于车辆安全检查的成像装置，包括：辐射源装置，包括第一射线单元，所述第一射线单元沿第一预定张角出射第一射线束，以使所述第一射线束穿过以预设速度通过检查通道的被检车辆的第一部分；探测器装置，包括与所述第一射线单元对应设置的第一探测器单元，所述第一探测器单元用于接收所述第一射线束；其中，所述辐射源装置至少部分地设置于所述检查通道的路面之上，所述第一探测器单元设置于所述检查通道的第一侧。
在本公开的一种示例性实施例中，所述辐射源装置还包括：第二射线单元，所述第二射线单元沿第二预定张角出射第二射线束，以使所述第二射线束穿过所述被检车辆的第二部分。其中所述第二预定张角的方向不同于所述第一预定张角的方向。
在本公开的一种示例性实施例中，所述探测器装置还包括：与所述第二射线单元对应设置的第二探测器单元，所述第二探测器单元用于接收所述第二射线束；其中，所述第二探测器单元设置于所述检查通道的第二侧。
在本公开的一种示例性实施例中，所述第一探测器单元和所述第二探测器单元具有预定高度。其中所述预定高度根据所述第一射线束的所述第一预定张角和所述第二射线束的所述第二预定张角以及所述第一部分和所述第二部分的尺寸确定。
在本公开的一种示例性实施例中，所述第一射线单元包括射线源和屏蔽体，所述屏蔽体和所述准直器用于屏蔽所述射线源发射的所述第一预定张角之外的射线，同时约束所述射线的宽度。
在本公开的一种示例性实施例中，所述第一射线单元包括射线源、屏蔽体以及准直器。其中所述屏蔽体和所述准直器用于屏蔽所述射线源发射的沿所述第一预定张角出射的所述第一射线束和沿第二预定张角出射的第二射线束之外的射线，同时约束所述射线的宽度。其中所述第二射线束穿过所述被检车辆的第二部分。
在本公开的一种示例性实施例中，所述探测器装置还包括：与所述第二预定张角对应设置的第二探测器单元，所述第二探测器单元用于接收所述第二射线束；其中，所述第二探测器单元设置于所述检查通道的第二侧。
在本公开的一种示例性实施例中，所述辐射源装置的一部分嵌入所述检查通道的路面以下，另一部分露出所述检查通道的路面，其中露出部分的高度小于一预设值。其中所述预设值相关于所述被检车辆的底盘的离地高度。
在本公开的一种示例性实施例中，所述被检车辆为第一车型时，所述辐射源装置的所述露出部分具有第一高度，且所述辐射源装置出射具有第一能量的射线；所述被检车辆为第二车型时，所述辐射源装置的所述露出部分具有第二高度，且所述辐射源装置出射具有 第二能量的射线；其中，所述第一高度小于所述第二高度，所述第一能量小于所述第二能量。
在本公开的一种示例性实施例中，还包括：第一传感组件，设置在所述辐射源装置的第一侧，其用于输出第一传感信号表示所述被检车辆进入所述检查通道。
在本公开的一种示例性实施例中，所述第一传感组件包括埋设于所述检查通道入口处的地感线圈。
在本公开的一种示例性实施例中，还包括：第二传感组件，设置于所述第一传感组件和所述辐射源装置之间，其用于输出第二传感信号表示所述被检车辆的所述第一部分进入所述辐射源装置的辐射区域，并控制所述辐射源装置出射具有第一剂量的射线。
在本公开的一种示例性实施例中，所述第二传感组件包括第一光电开关组，所述第一光电开关组设置于所述检查通道的两侧和/或所述检查通道的路面。
在本公开的一种示例性实施例中，还包括：第三传感组件，设置于所述辐射源装置的第二侧，其用于输出第三传感信号表示所述被检车辆的所述第一部分驶离所述辐射源装置的所述辐射区域，并控制所述辐射源装置出射具有第二剂量的射线；其中，所述第二剂量小于所述第一剂量。
在本公开的一种示例性实施例中，所述第三传感组件包括第二光电开关组，所述第二光电开关组设置于所述检查通道的两侧和/或所述检查通道的路面。
在本公开的一种示例性实施例中，还包括：速度传感器，用于测量所述被检车辆在所述检查通道内的移动速度。
在本公开的一种示例性实施例中，还包括：第一延时装置，与所述速度传感器连接，用于根据所述移动速度和所述第一部分的尺寸设置一第一延迟时间；其中，当所述第二传感组件检测到所述被检车辆的所述第一部分进入所述辐射源装置的所述辐射区域，经过所述第一延时时间，输出一第一控制信号控制所述辐射源装置出射的射线的剂量从所述第一剂量转换为第二剂量。
在本公开的一种示例性实施例中，还包括：第二延时装置，与所述速度传感器连接，用于根据所述移动速度和所述第一部分与所述被检车辆的一第三部分之间的轴距设置一第二延迟时间；其中，当所述辐射源装置出射的射线的剂量从所述第一剂量转换为所述第二剂量，经过所述第二延迟时间，输出一第二控制信号控制所述辐射源装置出射的射线的剂量从所述第二剂量转换为所述第一剂量。
在本公开的一种示例性实施例中，所述辐射源装置设置于所述检查通道的路面的中央，且所述第一射线单元的靶心设置于所述检查通道的路面之上。
在本公开的一种示例性实施例中，所述第一预定张角和所述第二预定张角方向相反，所述第一探测器单元和所述第二探测器单元相对设置。
在本公开的一种示例性实施例中，还包括：数据采集与成像装置，与所述探测器装置连接，接收所述第一射线单元输出的第一射线强度数据生成所述第一部分的第一辐射图 像。
在本公开的一种示例性实施例中，还包括：显示装置，与所述数据采集与成像装置连接，用于显示所述被检车辆的所述第一辐射图像。
在本公开的一种示例性实施例中，还包括：判断装置，用于根据所述第一辐射图像判断所述第一部分中是否夹带违禁物品。
在本公开的一种示例性实施例中，还包括：控制装置，与所述辐射源装置和所述探测器装置连接，用于控制所述辐射源装置和所述探测器装置的启动和关闭。
在本公开的一种示例性实施例中，所述第一探测器单元和所述第二探测器单元为线阵探测器。
在本公开的一种示例性实施例中，所述第一预定张角的所述第一射线束的辐射面垂直于所述检查通道的路面。
根据本公开的一个方面，提供一种用于车辆安全检查的成像方法，包括：以沿第一预定张角出射的第一射线束穿过以预设速度通过检查通道的被检车辆的第一部分；接收穿过所述第一部分的所述第一射线束并输出第一射线强度数据；根据所述第一射线强度数据生成所述第一部分的第一辐射图像；根据所述第一辐射图像判断所述第一部分中是否夹带违禁物品。
在本公开的一种示例性实施例中，还包括：以沿第二预定张角出射的第二射线束穿过所述被检车辆的第二部分；接收穿过所述第二部分的所述第二射线束并输出第二射线强度数据；根据所述第二射线强度数据生成所述第二部分的第二辐射图像；根据所述第二辐射图像判断所述第二部分中是否夹带违禁物品。其中，所述第二预定张角的方向不同于所述第一预定张角的方向。
在本公开的一种示例性实施例中，还包括：当检测到所述被检车辆的所述第一部分通过所述检查通道中的辐射区域时，经过一预设延迟时间，以所述第一射线束扫描所述被检车辆的第三部分并检查所述第三部分中是否夹带违禁物品。
根据本公开某些实施例中的用于车辆安全检查的成像装置及其方法，能够快速对车辆特定部位(例如轮胎、后备箱、行李箱、工具箱等)进行辐射成像，以实现检测该特定部位中是否夹带违禁物品的目的。
另外，根据本公开的一些实施例，可以只对车辆特定部位区域进行成像而不对其它部分成像，使得驾乘人员收到的辐射照射剂量最小化。
再一方面，根据本公开的一些实施例，可以对车辆的左右特定部位同时成像，且左右特定部位的成像区域没有重叠。
附图说明
通过参照附图详细描述其示例实施方式，本公开的上述和其它特征及优点将变得更加明显。
图1示意性示出根据本公开一示例实施方式的一种用于车辆安全检查的成像装置的结构示意图；
图2示意性示出根据本公开一示例实施方式的另一种用于车辆安全检查的成像装置的结构示意图；
图3示意性示出根据本公开一示例实施方式的再一种用于车辆安全检查的成像装置的结构示意图；
图4示意性示出根据本公开一示例实施方式的一种用于车辆安全检查的成像方法的流程图；
图5示意性示出根据本公开一示例实施方式的另一种用于车辆安全检查的成像方法的流程图；
图6示意性示出根据本公开一示例实施方式的再一种用于车辆安全检查的成像方法的流程图。
具体实施方式
现在将参考附图更全面地描述示例实施例。然而，示例实施例能够以多种形式实施，且不应被理解为限于在此阐述的实施例；相反，提供这些实施例使得本公开将全面和完整，并将示例实施例的构思全面地传达给本领域的技术人员。在图中相同的附图标记表示相同或类似的部分，因而将省略对它们的重复描述。
此外，所描述的特征、结构或特性可以以任何合适的方式结合在一个或更多实施例中。在下面的描述中，提供许多具体细节从而给出对本公开的实施例的充分理解。然而，本领域技术人员将意识到，可以实践本公开的技术方案而没有所述特定细节中的一个或更多，或者可以采用其它的方法、组元、材料、装置、步骤等。在其它情况下，不详细示出或描述公知结构、方法、装置、实现、材料或者操作以避免模糊本公开的各方面。
本公开实施方式首先提出一种用于车辆安全检查的成像装置，利用安装于检查通道路面的辐射源装置及检查通道侧面的探测器装置来对行进中的车辆特定部位进行辐射成像，并根据辐射图像判断该特定部位中是否夹带违禁物品。下面的实施例均以该特定部位为被检车辆的轮胎为例进行说明的，但需要说明的是，该特定部位不限于轮胎，例如还可以是被检车辆的行李箱、工具箱、后备箱等。
图1示意性示出根据本公开一示例实施方式的一种用于车辆安全检查的成像装置的结构示意图。
如图1所示，该用于车辆安全检查的成像装置100可以包括：辐射源装置110以及探测器装置120。
其中辐射源装置110可以包括第一射线单元111，第一射线单元111沿第一预定张角α出射第一射线束S1，以使第一射线束S1穿过以预设速度通过检查通道130的 被检车辆140的第一部分(例如，第一轮胎141)。
其中辐射源装置110至少部分地设置于检查通道130的路面131之上。
在示例性实施例中，辐射源装置110的一部分可嵌入检查通道130的路面以下，另一部分露出检查通道130的路面131，其中露出部分的高度H1小于一预设值。
在一些实施例中，所述预设值相关于被检车辆140的底盘的离地高度H2。其中H1小于H2。
在另一些实施例中，辐射源装置110也可以完全设置在检查通道130的路面131上，只要其满足露出地面部分的高度小于被检车辆的最小离地高度即可。
在示例性实施例中，辐射源装置110可设置于检查通道130的路面131的中央。在一些实施例中，第一射线单元111的靶心设置于检查通道130的路面131之上。
在一些实施例中，辐射源装置110为独立模块，具备自屏蔽能力，除用于出射第一射线束S1的出束口之外的区域，距离辐射源装置1.5米距离处泄露率小于2.5μGyh-1。在一些实施例中，辐射源装置110可采用钣金结构，具备IP65的防护等级。
在示例性实施例中，被检车辆140为第一车型时，辐射源装置110的所述露出部分具有第一高度，且辐射源装置110出射具有第一能量的射线。
例如，第一车型可以为通用乘用车。由于通用乘用车的底盘的离地高度一般最小为150mm，在重载条件下可能达到100mm。因此，可以设置第一高度为小于100mm，例如90mm、80mm等。
在示例性实施例中，被检车辆140为第二车型时，辐射源装置110的所述露出部分具有第二高度，其中辐射源装置110出射具有第二能量的射线。
在一些实施例中，所述第一高度可以小于所述第二高度，所述第一能量可以小于所述第二能量。
例如，第二车型可以为集装箱车，集装箱车的底盘的离地高度一般最小为300mm。因此，可以设置第二高度为小于300mm，例如200mm、150mm等。同时，由于通常情况下，通用乘用车的轮胎厚度比集装箱车的轮胎厚度要低，所以，通用乘用车的轮胎辐射成像的射线能量可以设置的比集装箱车的轮胎辐射成像的射线能量低，但本公开不以此为限。
在一些实施例中，还可以对被检车辆的车型进行更细致的划分，例如划分为小轿车、大客车、集装箱卡车、厢式货车等。可以根据不同的车型设置不同能量、不同离地高度的辐射源装置。
在一些实施例中，可以制作适用于不同车型的相应规格的辐射源装置，根据被检车辆类型的不同，更换辐射源装置可满足对不同车型的轮胎检查的更换。
在一些实施例中，可以制作一个可自适应调节的辐射源装置，可以通过一车底盘高度传感器检测被检车辆的底盘的离地高度，然后根据检测到的该被检车辆的离地高度自适应的调节辐射源装置露出路面部分的高度和/或出射的射线能量。
其中探测器装置120可以包括与第一射线单元111对应设置的第一探测器单元121，第一探测器单元121可以用于接收第一射线束S1。
在一些实施例中，第一探测器单元121的成像区域可设置为1.2米。当然，本公开不以此为限，具体的成像区域的高度可以根据系统需求进行调整，例如根据被检车辆的轮胎尺寸大小、后备箱、行李箱、工具箱的位置、辐射源装置的出射射线的张角大小、辐射源装置与探测器装置之间的距离、轮胎与辐射源装置之间的距离等选择。例如，为了能够对被检车辆的轮胎进行完整成像，可以设置第一探测器单元的成像区域的高度可以满足被检车辆的轮胎最大尺寸完整成像的要求。
在另一些实施例中，第一探测器单元121的起检高度为0-0.65米。这里的起检高度是指第一探测器单元121的成像区域的离地高度。
例如，第一射线单元111的靶心与检查通道130的路面131持平，辐射源装置110露出地面最高高度不超过80mm，第一探测器单元121紧贴检查通道130的路面131安装，可对被检车辆的轮胎地面以上部分“0”距离开始检查，通过对被检车辆的轮胎的扫描，检查是否通过轮胎进行走私或携带违禁物品。
上述实施例以被检车辆的轮胎为例来说明第一探测器单元121的起检高度为0，但该起检高度是可以随着要检查的特定部位的不同而调整的，例如由于行李箱、工具箱等特定部位的离地高度不为0，则可以根据行李箱、工具箱等的离地高度设置相应的起检高度。
在一些实施例中，探测器装置120可采用钣金结构，能够满足户外常年使用、通风、保温、防雨等要求。
在示例性实施例中，第一探测器单元121设置于检查通道130的第一侧。例如，图1中所示，第一探测器单元121设置于检查通道130相对于被检车辆驾驶员的右侧。但本公开不以此为限，第一探测器单元121也可以设置于左侧，只要其能够接收到穿过被检车辆一侧的轮胎的射线束即可。
在示例性实施例中，第一射线单元111包括射线源、屏蔽体以及准直器。其中所述屏蔽体和所述准直器用于屏蔽所述射线源发射的第一预定张角α之外的射线，同时约束所述射线的宽度。在一些实施例中，约束后的所述射线的宽度可以为3-5毫米。在另一些实施例中，约束后的所述射线的宽度也可以为5毫米-18毫米。可以根据系统的需求选择相应的准直器获得对应宽度的射线。
例如，第一射线单元111可以采用周向发射射线的射线源。所述屏蔽体能够将所述射线源发射的除了沿所述第一预定张角α出射的第一射线束S1之外的射线全部屏蔽掉，从而能够降低辐射源对驾乘人员的辐射量。在一些实施例中，所述射线源可以采用同位素放射源。
在示例性实施例中，第一射线单元111还可以采用一第一X射线机。X射线机一般的最大能量数百KeV，能够满足轮胎的穿透能力要求。在一些实施例中，第一射线 单元111也可以采用X射线加速器。
在示例性实施例中，第一射线单元111为点状X射线源，其在第一预定张角α范围中放射扇状的X射线。
在示例性实施例中，所述射线单元的辐射能量范围为60-180KeV。
需要说明的是，采用任意能够使得被检车辆的轮胎辐射成像的辐射源均属于本公开的保护范围，其具体的辐射能量可以根据被检车辆的车型、轮胎的材质和厚度等因素综合考虑选择。例如，当被检车辆为通用乘用车时，可以选择辐射能量为80KeV的辐射源；当被检车辆为集装箱车时，可以选择辐射能量为160KeV的辐射源。
在示例性实施例中，被检车辆140的所述预设速度可以为5km/h-20km/h。但本公开不以此为限。可以在被检车辆进入检测通道之前的地方设置一个提醒标识，用于提醒驾驶员提前减速至该速度范围之内。
在示例性实施例中，第一预定张角α的第一射线束S1垂直于检查通道130的路面131，使得该第一射线束S1垂直入射至该第一探测器单元121。当然，本公开不以此为限。在一些实施例中，辐射源装置110出射的第一射线束S1的辐射面可以与检查通道130的路面131之间具有一定的夹角。在其他实施例中，辐射源装置110出射的第一射线束S1还可以平行于检查通道130的路面131，只要其能够保证对被检车辆的轮胎完全辐射成像即可。
在示例性实施例中，该装置100还可以包括：第一传感组件(图中未示出)，该第一传感组件可以设置在检查通道130的第一侧(例如该检查通道130的入口侧)，该第一传感组件可以用于检测被检车辆140是否驶入检查通道130，当该第一传感组件检测到被检车辆149驶入检查通道130时，其输出第一传感信号发送给装置100用于通知装置100有车辆进入了检查通道130。
在示例性实施例中，所述第一传感组件包括埋设于检查通道130入口处的地感线圈。
例如，可以在检查通道入口处设置过车道闸、交通灯等，驾驶员可以通过道闸的开启和交通灯的指示判断是否能够进入该检查通道。当该被检车辆140的第一轮胎141压到所述地感线圈后，道闸的栏杆抬起，交通信号灯变成绿色，被检车辆开始驶入该检查通道。
在一些实施例中，该装置100还可以包括车牌识别装置，当该被检车辆进入该检查通道之时，车辆牌照识别装置同时记录车牌信息。
在示例性实施例中，还包括：第二传感组件，设置于所述第一传感组件和辐射源装置110之间，其用于输出第二传感信号表示被检车辆140的第一轮胎141进入辐射源装置110的辐射区域，并控制辐射源装置110出射具有第一剂量的射线。
在示例性实施例中，所述第二传感组件包括第一光电开关组，所述第一光电开关组设置于检查通道130的两侧和/或检查通道130的路面131。
例如，当被检车辆140的前轮胎(第一轮胎141)压到所述地感线圈时，同时由于该被检车辆140驶入该检查通道130挡住所述第一光电开关组，辐射源装置110开始启动出束。所述第一光电开关组使用光幕或交叉光电信号并通过地感线圈的地感信号确认车辆到达，开始辐射扫描。
在示例性实施例中，还包括：第三传感组件，设置于检查通道130的第二侧(例如检查通道130的出口侧)，其用于输出第三传感信号表示被检车辆140的第一轮胎141驶离辐射源装置110的所述辐射区域，并控制辐射源装置110出射具有第二剂量的射线。
在示例性实施例中，所述第三传感组件包括第二光电开关组，所述第二光电开关组设置于检查通道130的两侧和/或检查通道130的路面131。
其中所述第二剂量小于所述第一剂量。所述第一剂量至少能够满足第一射线束S1穿过被检车辆的第一轮胎辐射成像的要求，而当被检车辆的第一轮胎驶出辐射源装置的辐射区域时，可以降低辐射源的出射剂量，以减小对驾乘人员的辐射量。在一些实施例中，所述第二剂量可以为0，即当第三传感组件检测到当前被扫描的第一轮胎已驶离辐射区域时，可以控制辐射源装置110关闭，停止出束。例如，当被检车辆140的第一轮胎通过所述第二光电开关组之后，辐射源装置110停止出束。
在一些实施例中，检查通道130两侧(左右两侧)分别具有安装立柱，所述第一光电开光组和/或所述第二光电开关组可以设置在所述立柱之上。在另一些实施例中，所述第一光电开光组和/或所述第二光电开关组可以安装在被检车辆140经过的被检通道130的路面上。在另一些实施例中，所述第一光电开关组和所述第二光电开关组设置的离地高度大约为该被检车辆140的底盘的离地高度，这样，当光电开关组发射的信号被遮挡时，可以判断出是被检车辆的轮胎而非车身，且被检车辆的轮胎接近辐射源装置时即可被判断出来。
在一些实施例中，辐射源装置110和所述第一传感组件之间的距离等于或者略大于被检车辆140的轮胎的半径。在另一些实施例中，所述第二传感组件更靠近辐射源装置110，而稍微远离所述第一传感组件。在一些实施例中，辐射源装置110和所述第三传感组件之间的距离等于或者略大于被检车辆140的轮胎的直径。
在示例性实施例中，当所述第一传感组件和/或所述第二传感组件检测到被检车辆140的第三轮胎(例如被检车辆的后轮胎其中之一，第一轮胎和第三轮胎位于被检车辆的同一侧，例如右侧)时，装置100控制辐射源装置110重新开启射线或者从所述第二剂量转换为所述第一剂量，进行该第三轮胎的辐射成像。当所述第三传感组件检测到所述第三轮胎驶离辐射源装置110的辐射区域时，系统控制辐射源装置110从所述第一剂量转换为所述第二剂量，停止出射或者减小出射剂量。
例如，被检车辆140后轮胎进入挡住第一光电开关组时，同时该后轮胎压到地感 线圈时，辐射源装置110开始启动出束。被检车辆140后轮胎通过第二光电开关组之后，辐射源装置110停止出束。当检测到最后的轮胎过去后，关闭射线，检测结束。系统控制道闸落下，限制下一辆车进入检查通道。给操作员判断车辆图像时间，操作员按确认键后，系统进入下一辆车的待检状态。
上述以被检车辆140前后两个轮胎为例进行说明，但实际情况下，可以根据被检车辆前后的轮胎数量循环执行上述检测、辐射、停止出束/减小辐射剂量、再检测、再辐射、再停止出束/减小辐射剂量的过程，直到被检车辆至少一侧的轮胎全部检查完毕为止。例如，有的被检车辆的一侧可能具有前、中、后轮胎，此时按照上述过程执行三次辐射成像过程即可。本公开对被检车辆的轮胎数量不作限定。
需要说明的是，虽然上述实施例中以地感线圈和光电开关组来检测被检车辆的轮胎驶入或者驶离辐射区域，但本公开不以此为限，例如还可以通过红外线发射装置、可见光发射装置、电磁信号发射装置或超声波发射装置等任意的能够检测的装置来替代或者使用其任意的组合。
在示例性实施例中，该装置100还包括：速度传感器，用于测量所述被检车辆在所述检查通道内的移动速度。
在一些实施例中，所述速度传感器包括设置在检查通道130两侧的测速雷达。
在另一些实施例中，系统根据从所述速度传感器接收的有关被检车辆140的移动速度来控制对被检车辆140的轮胎的辐射图像的重建，并根据所述移动速度来修正辐射图像数据。
在示例性实施例中，该装置100还包括：第一延时装置，所述第一延时装置与所述速度传感器连接，用于根据所述移动速度和所述第一轮胎的尺寸设置一第一延迟时间T1。其中，当所述第二传感组件检测到被检车辆140的第一轮胎141进入辐射源装置110的所述辐射区域，经过所述第一延时时间T1，输出一第一控制信号控制辐射源装置110出射的射线的剂量从所述第一剂量转换为第二剂量。
例如，装置100通过检测进入该检查通道130的当前被检车辆140的实时车速、以及该当前被检车辆140的被扫描的轮胎的尺寸等因素计算出该当前被检车辆140通过辐射源装置110的辐射区域的所用时间，设置所述第一延迟时间T1大于或者等于该计算出的所用时间，从检测到该被扫描的轮胎进入所述辐射区域开始计时，判断是否达到T1，当达到T1时间时，装置100判定该被扫描的轮胎已经完全通过所述辐射区域，此时，装置100控制辐射源装置110减小辐射量至第二剂量或者停止出束，以减少对无用物体的扫描，减小驾乘人员的额外照射剂量。
在示例性实施例中，还包括：第二延时装置，与所述速度传感器连接，用于根据所述移动速度和第一轮胎141与被检车辆140的一第三部分(例如与该第一轮胎同侧的后轮胎，下面称为第三轮胎)之间的轴距设置一第二延迟时间。其中，当辐射源装置110出射的射线的剂量从所述第一剂量转换为所述第二剂量，经过所述第二延迟时 间，输出一第二控制信号控制辐射源装置110出射的射线的剂量从所述第二剂量转换为所述第一剂量。
其中第一轮胎141和所述第三轮胎之间的轴距为例如前后两个轮胎的中心原点之间的直线距离。根据被检车辆140的实时车速和前后两个轮胎之间的轴距计算得到第一轮胎141驶离辐射源装置110、所述第三轮胎驶入辐射源装置110的所用时间，设置所述第二延迟时间T2等于或者小于该计算出的所用时间，装置100控制辐射源装置110重新开启射线，进行后一轮胎即所述第三轮胎的辐射成像。
本发明实施例针对驾驶舱使用低剂量的射线进行检查，这样驾驶舱接受的射线剂量非常低，因此驾驶员不用下车，而对轮胎这样的部分使用高剂量的射线进行检查，获得目标部分的清晰图像。
需要说明的是，虽然上述实施例中在检查完第一轮胎之后和开始检查第三轮胎之前可以降低出射的射线剂量甚至关闭辐射源装置，但在另一些实施例中，从检测到被检车辆的第一轮胎开始直至该被检车辆的同一侧(例如右侧)的所有轮胎被检测完毕之前，辐射源装置的射线剂量并不改变，即对被检车辆同一侧的两轮胎之间的特定部位均进行辐射成像，这样可以同时检测轮胎、工具箱、行李箱等特定部位中是否携带有违禁物品。
在示例性实施例中，该装置100还包括：数据采集与成像装置，与所述探测器装置连接，接收所述第一射线单元111输出的第一射线强度数据生成第一轮胎141的第一辐射图像。
在示例性实施例中，该装置100还包括：图像拍摄装置，用于车辆信息的采集，所述图像拍摄装置可以安装于检查通道的上方，抓拍被检车辆140的车身图像，可以用于车辆牌照的识别等。
在示例性实施例中，该装置100还包括：显示装置，与所述数据采集与成像装置连接，用于显示被检车辆140的所述第一辐射图像。
在一些实施例中，该装置100还包括：存储装置，用于将同一被检车辆的轮胎的辐射图像信息和车牌信息互相关联存储，方便日后查找比对工作。
在一些实施例中，所述显示装置可以同时显示被检车辆的辐射图像和被检车辆的其他信息(例如车牌号)，并采用关联技术同时对辐射图像和车辆信息进行传输和保存。
在示例性实施例中，还包括：判断装置，用于根据所述第一辐射图像判断第一轮胎141中是否夹带违禁物品。在一些实施例中，当所述判断装置判断所述被检车辆的所述第一轮胎中夹带有违禁物品时，还可以辅助红色报警灯同时启动报警功能。
辐射源装置发出射线束穿透被检车辆的轮胎，被另一侧的探测器装置接收。由于不同物品密度不同，因此对射线的吸收程度不同，则探测器装置输出的信号强弱也不同，将强弱不同的信号经数据采集与成像装置处理后，被检车辆的轮胎的辐射图像就 实时显示在计算机屏幕上。不同的物品有不同的形状、密度，因此在辐射图像上轮胎与机械、电子等设备在辐射图像中有明显的区别，通过查看辐射图像可快速识别出车辆轮胎中是否夹带违禁物品。
在一些实施例中，一般车辆轮胎中是空的，正常情况下不会有其他东西，当判断出轮胎的辐射图像中有其他物品的轮廓时，一般就可以直接发出预警信息，认为该被检车辆的轮胎中有夹带违禁物品。
在另一些实施例中，由于车辆轮胎的组成材料、结构、尺寸等信息都是比较固定的、已知的，可以在装置的存储单元中预先存储常用轮胎对应的射线强度数据范围，当装置接收到被检车辆的轮胎的射线强度数据时，对探测到的射线强度数据进行分析，若探测数据与所述存储单元中存储的数据范围不匹配，即探测数据不在所述存储单元中存储的数据范围内，则提示出现异常，判断该被检车辆的轮胎中可能夹带有违禁物品。
在示例性实施例中，还包括：控制装置，与辐射源装置110和探测器装置120连接，用于控制辐射源装置110和探测器装置120的启动和关闭。在一些实施例中，所述控制装置可以为可编程控制器。辐射源装置110、探测器装置120、传感组件等通过有线或者无线的方式与所述可编程控制器连接。
在一些实施例中，所述控制装置为小型机柜，安装在探测器装置120的侧面，带以太网接口。
在一些实施例中，辐射源装置110、探测器装置120、所述控制装置等各模块独立封闭，模块之间的连接为插接式，不需要接线，只需要根据车型更换相应的辐射源装置，即可切换到通用乘用车轮胎成像装置或集装箱车辆轮胎成像装置。图像拍摄装置等尽可能安装在所述探测器装置和所述控制装置上面，减少与现场的接口。
在一些实施例中，该装置100还可以包括电源辅件，用于给各模块独立供电，方便检修维护。
在一些实施例中，该装置100还可以包括数据分析装置，对被检车辆的所有数据进行数据分析和数据挖掘。
在一些实施例中，该装置100还可以提供数据接口，可集成到客户现有业务管理系统中。
本发明实施方式提供的用于车辆安全检查的成像装置，利用射线辐射成像技术，专注对车辆轮胎的扫描检查，针对性强，目标明确，误判率低；可对车辆轮胎进行快速检查，该装置采用全自动扫描工作模式，无须人员操作驾驶员可以直接将车辆驶过检查通道，无须停车。另一方面，检查速度快，被检车辆可以以5km/h-20km/h的速度行驶通过，几秒钟内完成检测；装置可24小时全天候运行。本装置模块化结构设计，占地面积小。再一方面，根据客户需求和现场情况，可以提供定制化解决方案；扫描系统目标明确，操作简单可靠，可以重点针对乘用车和集装箱车辆轮胎位置进行 安全检查。
图2示出根据本公开一示例实施方式的另一种用于车辆安全检查的成像装置的结构示意图。
如图2所示，用于车辆安全检查的成像装置200包括：辐射源装置210以及探测器装置220。
在示例性实施例中，其中辐射源装置210包括第一射线单元211和第二射线单元212，第一射线单元211沿第一预定张角α出射第一射线束S1，以使第一射线束S1穿过以预设速度通过检查通道230的被检车辆240的第一轮胎241；第二射线单元212沿第二预定张角β出射第二射线束S2，以使第二射线束S2穿过该被检车辆的第二部分(例如，第二轮胎242)。
其中第一预定张角α与第一轮胎241的直径、第一轮胎241与第一射线单元211之间的距离有关，其要满足或者近似满足该第一射线束S1能够完全穿过该第一轮胎241的垂直横截面。类似地，第二预定张角β与第二轮胎242的直径、第二轮胎242与第二射线单元212之间的距离有关，其要满足或者近似满足该第二射线束S2能够完全穿过该第二轮胎242的垂直横截面。
在示例性实施例中，第一射线单元211和第二射线单元212均采用X射线机。可以根据被检车辆的车型选择相应型号的X射线机。例如，被检车辆为通用乘用车时，可以采用VJ-IXS0808(80KV、80W)；被检车辆为集装箱车时，可以VJ-IXS1820(160KV、200W)。在一些实施例中，两个X射线机采用背靠背的方式设置。
在示例性实施例中，第一射线单元211包括射线源和屏蔽体，所述屏蔽体用于屏蔽第一射线束S1和第二射线束S2之外的射线出束。所述射线源可以作为放射源置于所述屏蔽体内，所述屏蔽体外可以设置有射线准直器。所述屏蔽体可以采用铅板材质。
其中，在图2所示的实施例中，第一预定张角的方向与第二预定张角β的方向相反。例如，第一预定张角α朝向被检车辆240的右侧，第二预定张角β朝向被检车辆240的左侧。当然，本公开不以此为限。
在示例性实施例中，辐射源装置210至少部分地设置于检查通道230的路面231之上使得辐射源的靶心露出路面，且辐射源装置210位于该检查通道230的路面中央。
在一些实施例中，第一预定张角的角度等于第二预定张角的角度，即α＝β。当然，本公开不以此为限。
其中探测器装置220包括与第一射线单元211对应设置的第一探测器单元221以及与第二射线单元212对应设置的第二探测器单元222，第一探测器单元221用于接收穿过第一轮胎241的第一射线束S1，第二探测器单元222用于接收穿过第二轮胎242的第二射线束S2。
在示例性实施例中，第一探测器单元221设置于检查通道230的第一侧(例如右侧)，第二探测器单元222设置于检查通道230的第二侧233(例如左侧)。在图2 中，第一探测器单元221和第二探测器单元222相对设置。但本公开不以此为限，只要其能够分别接收到穿过被检车辆左右两侧的轮胎的射线束即可。
在示例性实施例中，第一探测器单元221和第二探测器单元222具有预定高度，其中所述预定高度根据第一射线束S1的第一预定张角α和第二射线束S2的第二预定张角β以及第一轮胎241和第二轮胎242的尺寸确定，用以保证被检车辆240的左右两个轮胎均用被完全辐射到。
例如，针对通用乘用车，在第一轮胎241和第二轮胎242的内表面之间的距离为1271.39mm，第一轮胎241和第二轮胎242的外表面之间的距离为1865.74mm，被检车辆240的第一轮胎241和第二轮胎242的直径均为659.72mm，被检通道230左右两侧的距离为3211.97mm，且第一轮胎241和第二轮胎242相对辐射源装置210对称时，可以设置该第一预定张角α和第二预定张角β均为40度，并设置第一探测器单元221和第二探测器单元222的起检区域高度约为1205.20mm。当然，上述数据是基于理想情况下给出的，实际应用场所可能会误差。且上述数据是根据通用乘用车的规格给出的，针对不同规格的车可以选择相应的数据范围。
在示例性实施例中，第一探测器单元221和第二探测器单元222为线阵探测器。其借助于在两线阵传感器的长度方向上排列的光接收元件来检测一维X射线强度分布。
在示例性实施例中，第一探测器单元221和第二探测器单元222为多个，分别布置于不同高度处，用于探测被检车辆240轮胎的上部、中部和下部。
在示例性实施例中，第一探测器单元221和第二探测器单元222采用单排、双排或多排闪烁体结构。其中所述闪烁体可以为钨酸镉闪烁晶体、掺铊碘化铯闪烁晶体或锗酸铋闪烁晶体中的至少一种。在一些实施例中，第一探测器单元221和第二探测器单元222还包括与所述闪烁体耦合的光电倍增管。当然，其他类型的探测器也在本公开的保护范围之内。
在示例性实施例中，第一预定张角α的第一射线束S1和第二预定张角β的第二射线束S2的辐射面均垂直于检查通道230的路面231。
在示例性实施例中，当第一传感组件和第二传感组件检测到被检车辆240的前轴左轮胎、右轮胎(即第一轮胎241和第二轮胎242)接近辐射源装置210时，控制装置发出控制信号控制辐射源装置210出射具有第一剂量的射线，第一探测器单元221和第二探测器单元222分别接收两侧的第一射线束S1和第二射线束S2，根据接收到的第一射线束S1和第二射线束S2分别生成前轴左轮胎的第一辐射图像和前轴右轮胎的第二辐射图像；当第三传感组件检测到被检车辆240的前轴左轮胎、右轮胎已经完全通过辐射源装置210时，控制装置发出控制信号控制辐射源装置210出射具有第二剂量的射线或者停止出束。类似的，当第一传感组件和第二传感组件检测到被检车辆240的后轴左轮胎、右轮胎(即第三轮胎和第四轮胎)接近辐射源装置210时，控制 装置再次发出控制信号控制辐射源装置210出射具有第一剂量的射线，第一探测器单元221和第二探测器单元222分别接收两侧的第一射线束S1和第二射线束S2，根据接收到的第一射线束S1和第二射线束S2分别生成后轴左轮胎的第三辐射图像和后轴右轮胎的第四辐射图像；当第三传感组件检测到被检车辆240的后轴左轮胎、右轮胎已经完全通过辐射源装置210时，控制装置发出控制信号控制辐射源装置210出射具有第二剂量的射线或者停止出束。直至该被检车辆240的所有轮胎被检测完毕为止。
在其他实施例中，也可以采用类似上述实施方式中的第一延时装置和第二延时装置来控制辐射源装置210和探测器装置220的启闭，并以此使得被检车辆前轴和后轴轮胎分时辐射成像。具体内容可参考上述实施例，在此不再赘述。
需要说明的是，本公开实施例中的“第一”、“第二”、“第三”、“第四”等并不用于限定数量也不用于限定顺序，例如第一轮胎241中并不一定只包括一个轮胎，可能包括两个轮胎甚至多个轮胎；第一轮胎241可以是被检车辆240中的任意轮胎。
辐射源装置从被检车辆底部向两侧面发出的扇形第一射线束和第二射线束，穿透两侧面的第一轮胎/第三轮胎和第二轮胎/第四轮胎后分别被安装在检查通道两侧的第一探测器单元和第二探测器单元接收。由于物品不同部位密度不同，因此对射线的吸收程度不同，则探测器单元输出的信号强弱也不同，将强弱不同的信号经图像处理后，就在计算机屏幕上显示出轮胎内部物品的轮廓和形态，从而可判断出被检车辆的各个轮胎中是否夹带违禁物品。
本发明实施方式提供的用于车辆安全检查的成像装置，通过在检查通道的左右两侧对称设置两个探测器单元，每侧只对一边的轮胎进行辐射成像，能够使得左右两个轮胎的辐射图像没有重叠。另一方面，通过将辐射源装置设置于检查通道的路面中间位置，左右两个轮胎与辐射源装置近似对称，使得左右两个轮胎的辐射图像放大比例接近或相同。同时，当左右两个轮胎驶入辐射区域时开启辐射源装置，左右两个轮胎驶离辐射区域时停止出束或者减小出射剂量，可以使得只对轮胎区域进行成像而不对其它部分成像，使得驾乘人员收到的照射量剂量最小化，保证了系统的安全性。
本发明实施例中的其他内容可参考上述图1实施例中的内容，在此不再赘述。
图3示意性示出根据本公开一示例实施方式的再一种用于车辆安全检查的成像装置的结构示意图。
如图3所示，用于车辆安全检查的成像装置300包括：辐射源装置以及探测器装置。
其中辐射源装置包括第一射线单元311以及第二射线单元312，第一射线单元311沿第一预定张角出射第一射线束，以使第一射线束能够穿过以预设速度通过检查通道的被检车辆的第一轮胎；第二射线单元312沿第二预定张角出射第二射线束，以使所述第二射线束穿过被检车辆的第二轮胎。
其中探测器装置包括与第一射线单元311对应设置的第一探测器单元321以及与 第二射线单元312对应设置的第二探测器单元322，第一探测器单元321用于接收穿过所述第一轮胎的所述第一射线束，第二探测器单元322用于接收穿过所述第二轮胎的所述第二射线束。
其中辐射源装置至少部分地设置于所述检查通道的路面之上，第一探测器单元321设置于所述检查通道的第一侧，第二探测器单元322设置于所述检查通道的第二侧。其与上述图2所示实施方式的不同之处在于，图2的第一射线单元和第二射线单元背靠背方式紧挨着设置，第一探测器单元和第二探测器单元相对设置，而在图3的实施方式中，第一射线单元和第二射线单元沿着检查通道的长度方向分开一预设距离L设置，相应的，第一探测器单元和第二探测器单元也沿着该检查通道的长度方向分开所述预设距离L设置。
相应的，第一射线单元311的第一侧设置有其对应的第一传感组件和第二传感组件，用于输出传感信号表示被检车辆的第一轮胎或第三轮胎(例如右侧的前后两个轮胎)进入所述检查通道，装置300控制第一射线单元311和第一探测器单元321开启第一轮胎或第三轮胎的辐射成像工作；第一射线单元311的第二侧设置有其对应的第三传感组件，用于输出传感信号表示被检车辆的第一轮胎或第三轮胎驶离所述检查通道，装置300控制第一射线单元311和第一探测器单元321停止第一轮胎或第三轮胎的辐射成像工作。类似的，第二射线单元312的第二侧设置有其对应的第一传感组件和第二传感组件，用于输出传感信号表示被检车辆的第二轮胎或第四轮胎(例如左侧的前后两个轮胎)进入所述检查通道，系统控制第二射线单元312和第二探测器单元322开启第二轮胎或第四轮胎的辐射成像工作；第二射线单元312的第二侧设置有其对应的第三传感组件，用于输出传感信号表示被检车辆的第二轮胎或第四轮胎驶离所述检查通道，系统控制第二射线单元312和第二探测器单元322停止第二轮胎或第四轮胎的辐射成像工作。
在示例性实施例中，第一射线单元311和第二射线单元312均设置于被检通道的路面中间位置。但本公开不以此为限，也可以设置在被检通道的路面靠近某一侧。
本发明实施方式提供的用于车辆安全检查的成像装置，通过相隔一定距离设置第一射线单元和第二射线单元，例如先扫描被检车辆的右侧前轮胎辐射成像，过一定时间后，再通过第二射线单元后扫描被检车辆的左侧前轮胎辐射成像，这样可以进一步减小对驾乘人员的辐射量。
本发明实施例中的其他内容参考上述实施例，在此不再赘述。
应理解，图1-3示意性示出的结构仅是根据本公开的用于车辆安全检查的成像装置的示例，本公开并不限于此。例如，还可以在检查通道的同一侧(例如右侧或者左侧)同时设置两个(或者以上)的探测器单元及其对应设置的两个射线单元，可以用于分别对被检车辆的前后两轮胎同时辐射成像等。
图4示意性示出根据本公开一示例实施方式的用于车辆安全检查的成像方法的流 程图。
如图4所示，在步骤S12中，以沿第一预定张角出射的第一射线束穿过以预设速度通过检查通道的被检车辆的第一部分。
例如，所述第一部分可以为该被检车辆的第一轮胎，所述第一轮胎可以为被检车辆右侧或者左侧的任一前轮胎或者后轮胎。
在步骤S14中，接收所述第一射线束并输出第一射线强度数据。
在步骤S16中，根据所述第一射线强度数据生成所述第一部分的第一辐射图像。
在步骤S18中，根据所述第一辐射图像判断所述第一部分中是否夹带违禁物品。
在示例性实施例中，还包括：当检测到所述被检车辆的所述第一部分通过所述检查通道中的辐射区域时，经过一预设延迟时间，以所述第一射线束扫描所述被检车辆的第三部分并检查所述第三部分中是否夹带违禁物品。
例如，所述第三部分可以为该被检车辆的第三轮胎，所述第三轮胎可以为所述第一轮胎同侧的后轮胎。
本发明实施例中的其他内容参考上述实施例，在此不再赘述。
图5示意性示出根据本公开一示例实施方式的用于车辆安全检查的成像方法的流程图。
如图5所示，在步骤S22中，分别同时以沿第一预定张角出射的第一射线束和沿第二预定张角出射的第二射线束穿过以预设速度通过检查通道的被检车辆的第一部分和第二部分。
例如，所述第一部分和所述第二部分可以分别为所述被检车辆的第一轮胎和第二轮胎，所述第一轮胎和所述第二轮胎可以为被检车辆的前轴左右两轮胎。
在步骤S24中，分别接收所述第一射线束和所述第二射线束并分别输出第一射线强度数据和第二射线强度数据。
在步骤S26中，分别根据所述第一射线强度数据和所述第二射线强度数据生成所述第一部分的第一辐射图像和所述第二部分的第二辐射图像。
在步骤S28中，分别根据所述第一辐射图像和所述第二辐射图像判断所述第一部分和所述第二部分中是否夹带违禁物品。
在步骤S210中，分别同时以所述第一射线束和所述第二射线束穿过所述被检车辆的第三部分和第四部分。
例如，所述第三部分和所述第四部分可以分别为所述被检车辆的第三轮胎和第四轮胎，所述第三轮胎和所述第四轮胎可以为被检车辆的后轴左右两轮胎。
在步骤S212中，分别接收所述第一射线束和所述第二射线束并分别输出第三射线强度数据和第四射线强度数据。
在步骤S214中，分别根据所述第三射线强度数据和所述第四射线强度数据生成所述第三部分的第三辐射图像和所述第四部分的第四辐射图像。
在步骤S216中，分别根据所述第三辐射图像和所述第四辐射图像判断所述第三部分和所述第四部分中是否夹带违禁物品。
其中上述步骤S28和步骤S216可以合并为一个步骤，即等到获取到一被检车辆的全部轮胎的辐射图像之后再去判断各个部分中是否夹带违禁物品。
本发明实施例中的其他内容参考上述实施例，在此不再赘述。
图6示意性示出根据本公开一示例实施方式的用于车辆安全检查的成像方法的流程图。
如图6所示，在步骤S32中，以沿第一预定张角出射的第一射线束穿过以预设速度通过检查通道的被检车辆的第一轮胎。
在步骤S34中，接收所述第一射线束并输出第一射线强度数据。
在步骤S36中，根据所述第一射线强度数据生成所述第一轮胎的第一辐射图像。
在步骤S38中，根据所述第一辐射图像判断所述第一轮胎中是否夹带违禁物品。
在步骤S310中，以沿第二预定张角出射的第二射线束穿过所述被检车辆的第二轮胎。
其中，所述第二预定张角的方向不同于所述第一预定张角的方向。
在步骤S312中，接收所述第二射线束并输出第二射线强度数据。
在步骤S314中，根据所述第二射线强度数据生成所述第二轮胎的第二辐射图像。
在步骤S316中，根据所述第二辐射图像判断所述第二轮胎中是否夹带违禁物品。
通过以上的详细描述，本领域的技术人员易于理解，根据本发明实施例的装置和方法具有以下优点中的一个或多个。
利用本公开的用于车辆安全检查的成像装置及其方法，通过辐射成像可以快速检查行驶中的车辆的轮胎中是否夹带违禁物品。可针对不同的车型设置不同的辐射源模块，重点针对乘用车和集装箱车辆轮胎进行安全检查。
以上具体地示出和描述了本公开的示例性实施例。应该理解，本公开不限于所公开的实施例，相反，本公开意图涵盖包含在所附权利要求的精神和范围内的各种修改和等效布置。

Claims (19)

  1. 一种用于车辆安全检查的成像装置，其特征在于，包括：
    辐射源装置，包括第一射线单元，所述第一射线单元沿第一预定张角出射第一射线束，以使所述第一射线束穿过以预设速度通过检查通道的被检车辆的第一部分；
    探测器装置，包括与所述第一射线单元对应设置的第一探测器单元，所述第一探测器单元用于接收所述第一射线束；
    其中，所述辐射源装置至少部分地设置于所述检查通道的路面之上，所述第一探测器单元设置于所述检查通道的第一侧。
  2. 如权利要求1所述的用于车辆安全检查的成像装置，其中，所述辐射源装置还包括：
    第二射线单元，所述第二射线单元沿第二预定张角出射第二射线束，以使所述第二射线束穿过所述被检车辆的第二部分；
    其中，所述第二预定张角的方向不同于所述第一预定张角的方向。
  3. 如权利要求2所述的用于车辆安全检查的成像装置，其中，所述探测器装置还包括：
    与所述第二射线单元对应设置的第二探测器单元，所述第二探测器单元用于接收所述第二射线束；
    其中，所述第二探测器单元设置于所述检查通道的第二侧。
  4. 如权利要求3所述的用于车辆安全检查的成像装置，其中，所述第一探测器单元和所述第二探测器单元具有预定高度；
    其中，所述预定高度根据所述第一射线束的所述第一预定张角和所述第二射线束的所述第二预定张角以及所述第一部分和所述第二部分的尺寸确定。
  5. 如权利要求1所述的用于车辆安全检查的成像装置，其中，所述第一射线单元包括：
    射线源；
    屏蔽体；以及
    准直器；
    其中，所述屏蔽体和所述准直器用于屏蔽所述射线源发射的所述第一预定张角之外的射线，同时约束所述射线的宽度。
  6. 如权利要求1所述的用于车辆安全检查的成像装置，其中，所述辐射源装置的一部分嵌入所述检查通道的路面以下，另一部分露出所述检查通道的路面，其中露出部分的高度小于一预设值；
    其中，所述预设值相关于所述被检车辆的底盘的离地高度。
  7. 如权利要求6所述的用于车辆安全检查的成像装置，其中，所述被检车辆为第一车型时，所述辐射源装置的所述露出部分具有第一高度，且所述辐射源装置出射具有第一能量的射线；
    所述被检车辆为第二车型时，所述辐射源装置的所述露出部分具有第二高度，且所述辐射源装置出射具有第二能量的射线；
    其中，所述第一高度小于所述第二高度，所述第一能量小于所述第二能量。
  8. 如权利要求1所述的用于车辆安全检查的成像装置，其中，还包括：
    第一传感组件，设置在所述辐射源装置的第一侧，其用于输出第一传感信号表示所述被检车辆进入所述检查通道。
  9. 如权利要求8所述的用于车辆安全检查的成像装置，其中，还包括：
    第二传感组件，设置于所述第一传感组件和所述辐射源装置之间，其用于输出第二传感信号表示所述被检车辆的所述第一部分进入所述辐射源装置的辐射区域，并控制所述辐射源装置出射具有第一剂量的射线。
  10. 如权利要求9所述的用于车辆安全检查的成像装置，其中，还包括：
    第三传感组件，设置于所述辐射源装置的第二侧，其用于输出第三传感信号表示所述被检车辆的所述第一部分驶离所述辐射源装置的所述辐射区域，并控制所述辐射源装置出射具有第二剂量的射线；
    其中，所述第二剂量小于所述第一剂量。
  11. 如权利要求10所述的用于车辆安全检查的成像装置，其中，还包括：
    速度传感器，用于测量所述被检车辆在所述检查通道内的移动速度。
  12. 如权利要求11所述的用于车辆安全检查的成像装置，其特征在于，还包括：
    第一延时装置，与所述速度传感器连接，用于根据所述移动速度和所述第一部分的尺寸设置一第一延迟时间；
    其中，当所述第二传感组件检测到所述被检车辆的所述第一部分进入所述辐射源装置的所述辐射区域，经过所述第一延时时间，输出一第一控制信号控制所述辐射源装置出射的射线的剂量从所述第一剂量转换为第二剂量。
  13. 如权利要求12所述的用于车辆安全检查的成像装置，其中，还包括：
    第二延时装置，与所述速度传感器连接，用于根据所述移动速度和所述第一部分与所述被检车辆的一第三部分之间的轴距设置一第二延迟时间；
    其中，当所述辐射源装置出射的射线的剂量从所述第一剂量转换为所述第二剂量，经过 所述第二延迟时间，输出一第二控制信号控制所述辐射源装置出射的射线的剂量从所述第二剂量转换为所述第一剂量。
  14. 如权利要求1所述的用于车辆安全检查的成像装置，其中，所述辐射源装置设置于所述检查通道的路面的中央，且所述第一射线单元的靶心设置于所述检查通道的路面之上。
  15. 如权利要求3所述的用于车辆安全检查的成像装置，其中，所述第一预定张角和所述第二预定张角方向相反，所述第一探测器单元和所述第二探测器单元相对设置。
  16. 如权利要求1所述的用于车辆安全检查的成像装置，其特征在于，还包括：
    数据采集与成像装置，与所述探测器装置连接，接收所述第一射线单元输出的第一射线强度数据生成所述第一部分的第一辐射图像；
    判断装置，用于根据所述第一辐射图像判断所述第一部分中是否夹带违禁物品。
  17. 一种用于车辆安全检查的成像方法，其特征在于，包括：
    以沿第一预定张角出射的第一射线束穿过以预设速度通过检查通道的被检车辆的第一部分；
    接收所述第一射线束并输出第一射线强度数据；
    根据所述第一射线强度数据生成所述第一部分的第一辐射图像；
    根据所述第一辐射图像判断所述第一部分中是否夹带违禁物品。
  18. 如权利要求17所述的用于车辆安全检查的成像方法，其中，还包括：
    以沿第二预定张角出射的第二射线束穿过所述被检车辆的第二部分；
    接收所述第二射线束并输出第二射线强度数据；
    根据所述第二射线强度数据生成所述第二部分的第二辐射图像；
    根据所述第二辐射图像判断所述第二部分中是否夹带违禁物品；
    其中，所述第二预定张角的方向不同于所述第一预定张角的方向。
  19. 如权利要求17所述的用于车辆安全检查的成像方法，其中，还包括：
    当检测到所述被检车辆的所述第一部分通过所述检查通道中的辐射区域时，经过一预设延迟时间，以所述第一射线束扫描所述被检车辆的第三部分并检查所述第三部分中是否夹带违禁物品。
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