技术领域technical field
本发明涉及辐射成像安全检测设备技术领域，尤其涉及一种基于背散射成像的外挂式移动检查系统。The invention relates to the technical field of radiation imaging safety detection equipment, in particular to an add-on mobile inspection system based on backscatter imaging.
背景技术Background technique
入射电子与样品接触时，其中一部分几乎不损失能量地在样品表面被弹性散射回来，这部分电子被称为背散射电子(BackscatteredElectron)。背散射电子的产额随样品的原子序数的增大而增加，因此成像可以反应样品的元素分布，及不同相成分区域的轮廓。When the incident electrons come into contact with the sample, some of them are elastically scattered back on the surface of the sample with almost no loss of energy. This part of the electrons is called backscattered electrons (Backscattered Electron). The yield of backscattered electrons increases with the atomic number of the sample, so the imaging can reflect the elemental distribution of the sample and the outline of different phase composition regions.
美国科技工程公司在专利ZL03801115.8中提供了一种用于检查物体的检查系统，例如，被检人员，也可以为任何类型的货物或车辆，检查系统具有封闭的运输工具，例如以封闭车体为特征的厢式货车或其它车辆，而且，该系统具有整个容纳于运输工具车体中的贯穿辐射源，用于产生贯穿辐射，还具有空间调制器，用于使贯穿辐射形成线束，以根据随时间改变的扫描轮廓照射该物体，探测器模块也完成地包含于运输工具的主体中，被设置为用于收集被被测物体散射回来的散射信号，同时，相对运动传感器根据运输工具与被检查物体的相对位移而产生相对运动信号，最后，该系统具有控制器，用于确保散射辐射的指定特性。另外，可以提供图像生成器，以用于部分地根据散射信号和相对运动信号而将信号形成物体容纳物的图像。American Science and Technology Engineering Company provides an inspection system for inspecting objects in patent ZL03801115.8, for example, persons to be inspected, or any type of goods or vehicles. A van or other vehicle characterized by a vehicle body, and the system has a penetrating radiation source housed entirely within the vehicle body for generating penetrating radiation and a spatial modulator for beaming the penetrating radiation to The object is irradiated according to the time-varying scanning profile. The detector module is also completely included in the main body of the vehicle, and is arranged to collect the scattered signal scattered back from the measured object. At the same time, the relative motion sensor according to the vehicle and The relative displacement of the object under inspection generates a relative motion signal. Finally, the system has a controller for ensuring the specified characteristics of the scattered radiation. Additionally, an image generator may be provided for forming the signal into an image of the object containment based in part on the scatter signal and the relative motion signal.
图1所示为上述移动式x射线反向散射检查车的结构示意图，移动检查车保持匀速直线行驶，X射线源30发射的线束经过飞轮34形成笔形束，落在被测物体上，形成飞点，位于运输工具内的散射探测器100收集任一时刻飞点的X射线背散射射线，经处理并得到整个被检物品的物质信息。Fig. 1 shows the structural diagram of the above-mentioned mobile X-ray backscatter inspection vehicle. The mobile inspection vehicle keeps running in a straight line at a constant speed. point, the scatter detector 100 located in the vehicle collects the X-ray backscattered rays at any time, and processes them to obtain the material information of the entire inspected item.
上述移动式x射线反向散射检查车的探测器模块设置于运输工具中，在安装该模块或者对该模块进行维修时，这种内置式的结构设置给操作带来不便。The detector module of the above-mentioned mobile X-ray backscatter inspection vehicle is arranged in the transportation vehicle. When installing the module or performing maintenance on the module, this built-in structure brings inconvenience to the operation.
发明内容Contents of the invention
本发明所要解决的技术问题是提供一种基于背散射成像的外挂式移动检查系统，该系统通过改变探测器模块设置的位置，由内置于运输工具改变为固接在运输工具外侧，解决现有技术中对探测器模块安装或维修不便的问题。The technical problem to be solved by the present invention is to provide an external mobile inspection system based on backscatter imaging. By changing the position of the detector module, the system is changed from being built in the vehicle to being fixed on the outside of the vehicle, so as to solve the problem of existing problems. The problem of inconvenient installation or maintenance of the detector module in the technology.
为了达到上述目的，本发明提出了一种基于背散射成像的外挂式移动检查系统，包括：运输工具；贯穿辐射源，所述贯穿辐射源设置于所述运输工具内；处理器，用于进行成像处理；散射探测器，所述散射探测器与所述处理器电连接，所述散射探测器用于吸收从被测物体散射的射线信号，并将所述射线信号发送至所述处理器进行处理；空间调制器，用于控制所述贯穿辐射源的射线轮廓；所述散射探测器位于所述运输工具的外侧。In order to achieve the above object, the present invention proposes an external mobile inspection system based on backscatter imaging, including: a transport tool; a penetrating radiation source, which is arranged in the transport tool; a processor for performing Imaging processing: a scatter detector, the scatter detector is electrically connected to the processor, the scatter detector is used to absorb the radiation signal scattered from the measured object, and send the radiation signal to the processor for processing ; a spatial modulator for controlling the ray profile penetrating the radiation source; and the scatter detector located on the outside of the vehicle.
上述基于背散射成像的外挂式移动检查系统，所述基于背散射成像的外挂式移动检查系统还包括一透射探测器，所述透射探测器与所述处理器电连接，所述透射探测器用于吸收未由被测物体阻挡的射线，并形成电信号发送至所述处理器进行处理。In the above-mentioned plug-in mobile inspection system based on backscatter imaging, the plug-in mobile inspection system based on backscatter imaging further includes a transmission detector, the transmission detector is electrically connected to the processor, and the transmission detector is used for The rays not blocked by the object to be measured are absorbed, and an electrical signal is formed and sent to the processor for processing.
上述基于背散射成像的外挂式移动检查系统，所述空间调制器位于所述贯穿辐射源和所述被测物体之间，所述空间调制器包括一准直器、一位于所述准直器和所述贯穿辐射源之间的飞轮。In the above-mentioned plug-in mobile inspection system based on backscatter imaging, the spatial modulator is located between the penetrating radiation source and the object under test, and the spatial modulator includes a collimator, a and the flywheel between the penetrating radiation source.
上述基于背散射成像的外挂式移动检查系统，所述贯穿辐射源为x射线源。In the above-mentioned plug-in mobile inspection system based on backscatter imaging, the penetrating radiation source is an x-ray source.
上述基于背散射成像的外挂式移动检查系统，所述基于背散射成像的外挂式移动检查系统还包括一显示器，所述显示器与所述处理器相连。The above-mentioned plug-in mobile inspection system based on backscatter imaging further includes a display connected to the processor.
相对于现有的移动式x射线反向散射检查车，本发明改变了散射探测器的位置，将散射探测器由内置于运输工具中变为设置在运输工具的外侧，当安装散射探测器或者对散射探测器进行维修时，便于工人操作。Compared with the existing mobile X-ray backscatter inspection vehicle, the present invention changes the position of the scatter detector, and changes the scatter detector from being built in the vehicle to being arranged on the outside of the vehicle. When the scatter detector is installed or When repairing the scattering detector, it is convenient for workers to operate.
附图说明Description of drawings
通过下面结合附图对其示例性实施例进行的描述，本发明上述特征和优点将会变得更加清楚和容易理解。The above-mentioned features and advantages of the present invention will become clearer and easier to understand through the following description of exemplary embodiments thereof in conjunction with the accompanying drawings.
图1是现有的一种移动式x射线反向散射检查车示意图；Fig. 1 is a schematic diagram of an existing mobile x-ray backscatter inspection vehicle;
图2是本发明基于背散射成像的外挂式移动检查系统的俯视图；Fig. 2 is a top view of the plug-in mobile inspection system based on backscatter imaging of the present invention;
图3是本发明一优选实施例的示意图；Fig. 3 is the schematic diagram of a preferred embodiment of the present invention;
图4是本发明另一优选实施例的示意图。Fig. 4 is a schematic diagram of another preferred embodiment of the present invention.
附图符号说明：Explanation of reference symbols:
1-被测物体，2-散射探测器，3-准直器，1-object under test, 2-scattering detector, 3-collimator,
4-运输工具，5-飞轮，6-贯穿辐射源，4-transportation tool, 5-flywheel, 6-penetrating radiation source,
7-透射探测器。7 - Transmission detector.
具体实施方式detailed description
下面结合附图对本发明作进一步详细说明。The present invention will be described in further detail below in conjunction with the accompanying drawings.
请参考图2，图2是本发明基于背散射成像的外挂式移动检查系统的俯视图。一种基于背散射成像的外挂式移动检查系统，包括：运输工具4，所述运输工具4可以是全封闭的，也可以是半封闭的；贯穿辐射源6，所述贯穿辐射源6设置于所述运输工具4内，优选的，贯穿辐射源为x射线源；处理器(图中未视出)，用于进行成像处理；散射探测器2，所述散射探测器2与所述处理器电连接，所述散射探测器2用于吸收从被测物体1散射的射线信号，并将所述射线信号发送至所述处理器进行处理；空间调制器，用于控制所述贯穿辐射源的射线轮廓；所述散射探测器2位于所述运输工具的外侧。Please refer to FIG. 2 , which is a top view of the plug-in mobile inspection system based on backscatter imaging of the present invention. An add-on mobile inspection system based on backscatter imaging, comprising: a vehicle 4, which can be fully enclosed or semi-closed; a penetrating radiation source 6, which is arranged on In the vehicle 4, preferably, the penetrating radiation source is an x-ray source; a processor (not shown in the figure) is used for imaging processing; a scatter detector 2, and the scatter detector 2 and the processor Electrically connected, the scatter detector 2 is used to absorb the ray signal scattered from the measured object 1, and send the ray signal to the processor for processing; the spatial modulator is used to control the penetrating radiation source Ray profile; the scatter detector 2 is located on the outside of the vehicle.
空间调制器位于所述贯穿辐射源6和所述被测物体1之间，所述空间调制器包括一准直器3、一位于所述准直器3和所述贯穿辐射源6之间的飞轮5。The spatial modulator is located between the penetrating radiation source 6 and the measured object 1, and the spatial modulator includes a collimator 3, a collimator 3 and the penetrating radiation source 6 Flywheel 5.
进一步地，基于背散射成像的外挂式移动检查系统还包括一透射探测器7，所述透射探测器7与所述处理器电连接，所述透射探测器7用于吸收未由被测物体1阻挡的射线，并形成电信号发送至所述处理器进行处理。Further, the plug-in mobile inspection system based on backscatter imaging also includes a transmission detector 7, which is electrically connected to the processor, and the transmission detector 7 is used to absorb The blocked rays are formed into electrical signals and sent to the processor for processing.
更进一步地，基于背散射成像的外挂式移动检查系统还包括一显示器，所述显示器与所述处理器相连。Furthermore, the plug-in mobile inspection system based on backscatter imaging further includes a display connected to the processor.
下面通过两个实施例详细描述本发明基于背散射成像的外挂式移动检查系统。The plug-in mobile inspection system based on backscatter imaging of the present invention will be described in detail below through two embodiments.
实施例一Embodiment one
该实施例中，基于背散射成像的外挂式移动检查系统只根据散射探测器的信号进行成像处理。请参考图3，图3是本发明一优选实施例的示意图。基于背散射成像的外挂式移动检查系统包括：In this embodiment, the plug-in mobile inspection system based on backscatter imaging only performs imaging processing according to the signal of the scattering detector. Please refer to FIG. 3 , which is a schematic diagram of a preferred embodiment of the present invention. The plug-in mobile inspection system based on backscatter imaging includes:
运输工具4，该运输工具是半全封闭的，本实施例中的运输工具4并不局限于某种类型的车，可以是卡车、箱式货车或其他类型的车辆，运输工具4用于放置贯穿辐射源6以及其他装置。Vehicle 4, which is semi-fully enclosed, vehicle 4 in the present embodiment is not limited to a certain type of car, it can be a truck, box truck or other types of vehicles, and vehicle 4 is used to place Through the radiation source 6 and other devices.
贯穿辐射源6，位于所述运输工具4内，贯穿辐射源6的用于形成射线，优选的，所述贯穿辐射源6为x射线源，例如，贯穿辐射源6可以为一X射线管，选用何种类型的射线源，取决于实际应用中贯穿辐射源所需的能量。The penetrating radiation source 6 is located in the vehicle 4, and the penetrating radiation source 6 is used to form rays. Preferably, the penetrating radiation source 6 is an x-ray source. For example, the penetrating radiation source 6 can be an X-ray tube, The type of radiation source to choose depends on the energy required to penetrate the radiation source in practical applications.
散射探测器2，位于所述运输工具4的外侧，将散射探测其2置于运输工具4的外侧便于前期安装以及后期维护，散射探测器2用于吸收从被测物体散射来的射线的信号，将所收集的信号传给处理器，综合处理。The scatter detector 2 is located on the outside of the vehicle 4, and the scatter detector 2 is placed on the outside of the vehicle 4 to facilitate early installation and later maintenance. The scatter detector 2 is used to absorb the signal of the radiation scattered from the measured object , and pass the collected signal to the processor for comprehensive processing.
空间调制器，位于所述贯穿辐射源6和所述被测物体1之间，空间调制器用于控制贯穿辐射源6所射出的射线，使其形成一种可以随时间改变的扫描轮廓。优选的，空间调制器包括一准直器3和一飞轮5，飞轮5位于所述准直器3和所述贯穿辐射源6之间。飞轮5由可以阻挡射线的材料制成，如可由贫化铀或者钨等制成。飞轮5上有曲面槽，当射线照射到飞轮5上，只有经过曲面槽的射线可以穿越飞轮5，其余射线都被飞轮5所阻挡，准直器3也是由可以阻挡射线的材料制成，准直器上设有细缝，当射线照射到准直器3上，只有经过细缝的射线可以穿越准直器3，其余射线都被准直器3所阻挡。The spatial modulator is located between the penetrating radiation source 6 and the measured object 1 , and the spatial modulator is used to control the rays emitted by the penetrating radiation source 6 so as to form a scanning profile that can change with time. Preferably, the spatial modulator includes a collimator 3 and a flywheel 5 , and the flywheel 5 is located between the collimator 3 and the penetrating radiation source 6 . Flywheel 5 is made of materials that can block rays, such as depleted uranium or tungsten. There is a curved surface groove on the flywheel 5. When the ray is irradiated on the flywheel 5, only the ray passing through the curved surface groove can pass through the flywheel 5, and the rest of the rays are all blocked by the flywheel 5. The collimator 3 is also made of a material that can block the ray. The collimator is provided with slits, and when the rays irradiate the collimator 3, only the rays passing through the slits can pass through the collimator 3, and the rest of the rays are blocked by the collimator 3.
处理器(图中未视出)，和所述散射探测器2相连，接受散射探测器2传递来的信号，分析被检物内部物质。The processor (not shown in the figure) is connected with the scattering detector 2, receives the signal transmitted by the scattering detector 2, and analyzes the internal substance of the detected object.
显示器(图中未示出)，所述显示器与所述处理器相连，用于成像显示。A display (not shown in the figure), which is connected to the processor and used for imaging display.
实施例二Embodiment two
在该实施例中，基于背散射成像的外挂式移动检查系统综合散射探测器和透射探测器的信号进行成像处理。请参考图4，图4是本实施例的示意图。基于背散射成像的外挂式移动检查系统包括：In this embodiment, the backscatter imaging-based plug-in mobile inspection system integrates the signals of the scattering detector and the transmission detector for imaging processing. Please refer to FIG. 4 , which is a schematic diagram of this embodiment. The plug-in mobile inspection system based on backscatter imaging includes:
运输工具4，该运输工具4是全封闭的，本实施例中的运输工具4并不局限于某种类型的车，可以是卡车、箱式货车或其他类型的车辆，运输工具4用于放置贯穿辐射源6以及其他装置。The means of transport 4, the means of transport 4 is fully enclosed, the means of transport 4 in the present embodiment is not limited to a certain type of car, it can be a truck, box truck or other types of vehicles, the means of transport 4 is used to place Through the radiation source 6 and other devices.
贯穿辐射源6，位于所述运输工具4内，贯穿辐射源6的用于形成射线，优选的，所述贯穿辐射源6为x射线源，例如，贯穿辐射源6可以为一X射线管，选用何种类型的射线源，取决于实际应用中贯穿辐射源所需的能量。The penetrating radiation source 6 is located in the vehicle 4, and the penetrating radiation source 6 is used to form rays. Preferably, the penetrating radiation source 6 is an x-ray source. For example, the penetrating radiation source 6 can be an X-ray tube, The type of radiation source to choose depends on the energy required to penetrate the radiation source in practical applications.
散射探测器2，位于所述运输工具4的外侧，将散射探测其2置于运输工具4的外侧便于前期安装以及后期维护，散射探测器2用于吸收从被测物体散射来的射线的信号，将所收集的信号传给处理器，综合处理。The scatter detector 2 is located on the outside of the vehicle 4, and the scatter detector 2 is placed on the outside of the vehicle 4 to facilitate early installation and later maintenance. The scatter detector 2 is used to absorb the signal of the radiation scattered from the measured object , and pass the collected signal to the processor for comprehensive processing.
空间调制器，位于所述贯穿辐射源6和所述被测物体1之间，空间调制器用于控制贯穿辐射源6所射出的射线，使其形成一种可以随时间改变的扫描轮廓。优选的，空间调制器包括一准直器3和一飞轮5，飞轮5位于所述准直器3和所述贯穿辐射源6之间。飞轮5由可以阻挡射线的材料制成，如可由贫化铀或者钨等制成。飞轮5上有曲面槽，当射线照射到飞轮5上，只有经过曲面槽的射线可以穿越飞轮5，其余射线都被飞轮5所阻挡，准直器3也是由可以阻挡射线的材料制成，准直器上设有细缝，当射线照射到准直器3上，只有经过细缝的射线可以穿越准直器3，其余射线都被准直器3所阻挡。The spatial modulator is located between the penetrating radiation source 6 and the measured object 1 , and the spatial modulator is used to control the rays emitted by the penetrating radiation source 6 so as to form a scanning profile that can change with time. Preferably, the spatial modulator includes a collimator 3 and a flywheel 5 , and the flywheel 5 is located between the collimator 3 and the penetrating radiation source 6 . Flywheel 5 is made of materials that can block rays, such as depleted uranium or tungsten. There is a curved surface groove on the flywheel 5. When the ray is irradiated on the flywheel 5, only the ray passing through the curved surface groove can pass through the flywheel 5, and the rest of the rays are all blocked by the flywheel 5. The collimator 3 is also made of a material that can block the ray. The collimator is provided with slits, and when the rays irradiate the collimator 3, only the rays passing through the slits can pass through the collimator 3, and the rest of the rays are blocked by the collimator 3.
透射探测器7，所述透射探测器7与所述散射探测器2分别位于被测物体1相邻或相对的两侧，透射探测器7用于吸收未被物品阻挡的射线，形成信号传送给处理器，综合处理。投射探测器7可以设置在一桥架上，如图4所示。The transmission detector 7, the transmission detector 7 and the scattering detector 2 are respectively located on the adjacent or opposite sides of the measured object 1, the transmission detector 7 is used to absorb the rays not blocked by the object, and form a signal to transmit to Processor, integrated processing. The projection detector 7 can be set on a bridge, as shown in FIG. 4 .
处理器(图中未示出)，和所述散射探测器2、所述透射探测器7均相连，接受散射探测器2和透射探测器7传递来的信号，分析被检物内部物质。A processor (not shown in the figure) is connected to the scattering detector 2 and the transmission detector 7, receives the signals transmitted by the scattering detector 2 and the transmission detector 7, and analyzes the internal substance of the object to be inspected.
显示器(图中未示出)，所述显示器与所述处理器相连，用于成像显示。A display (not shown in the figure), which is connected to the processor and used for imaging display.
需要注意的是，以上内容是结合具体的实施方式对本发明所作的进一步详细说明，不能认定本发明的具体实施方式仅限于此，在本发明的上述指导下，本领域技术人员可以在上述实施例的基础上进行各种改进和变形，而这些改进或者变形落在本发明的保护范围内。It should be noted that the above content is a further detailed description of the present invention in conjunction with specific embodiments, and it cannot be determined that the specific embodiments of the present invention are limited thereto. Under the guidance of the present invention, those skilled in the art can Various improvements and modifications are made on the basis of the invention, and these improvements or modifications fall within the protection scope of the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110178364.5ACN102854539B (en) | 2011-06-29 | 2011-06-29 | A kind of external hanging type mobile checking system based on back scattering imaging |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110178364.5ACN102854539B (en) | 2011-06-29 | 2011-06-29 | A kind of external hanging type mobile checking system based on back scattering imaging |
| Publication Number | Publication Date |
|---|---|
| CN102854539A CN102854539A (en) | 2013-01-02 |
| CN102854539Btrue CN102854539B (en) | 2016-05-04 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110178364.5AActiveCN102854539B (en) | 2011-06-29 | 2011-06-29 | A kind of external hanging type mobile checking system based on back scattering imaging |
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