CN204314235U - For container or the check system of vehicle and the alignment system for this check system - Google Patents

For container or the check system of vehicle and the alignment system for this check system Download PDF

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CN204314235U
CN204314235U CN201420784654.3U CN201420784654U CN204314235U CN 204314235 U CN204314235 U CN 204314235U CN 201420784654 U CN201420784654 U CN 201420784654U CN 204314235 U CN204314235 U CN 204314235U
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detector
module
container
inspection system
detector module
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李荐民
李玉兰
李元景
于昊
宗春光
顾菁宇
喻卫丰
宋全伟
王伟珍
孙尚民
刘以农
李君利
唐传祥
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Tsinghua University
Nuctech Co Ltd
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Nuctech Co Ltd
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Abstract

本实用新型公开了一种用于集装箱或车辆检查系统的对准系统和检查系统。检查系统包括射线源、准直器以及安装在探测器臂上的探测器模块,射线源、准直器以及探测器模块布置成形成检查通道,射线源发射的射线束经过准直器入射到被检查物体,由探测器模块收集被衰减的射线束以完成检查。对准系统包括测量模块,所述测量模块布置成接收从准直器发出的射线束并通过测量射线束确定射线源和准直器的位置和方向。该对准方法可以更加准确地测量射线源中心点、探测器笔端中心线及准直器中心线的对准程度。

The utility model discloses an alignment system and an inspection system used for a container or vehicle inspection system. The inspection system includes a ray source, a collimator, and a detector module installed on the detector arm. The ray source, collimator, and detector module are arranged to form an inspection channel. The ray beam emitted by the ray source passes through the collimator and enters the To inspect the object, the attenuated beam of rays is collected by the detector module to complete the inspection. The alignment system includes a measurement module arranged to receive a radiation beam emanating from the collimator and to determine the position and orientation of the radiation source and the collimator by measuring the radiation beam. The alignment method can more accurately measure the alignment degree of the center point of the ray source, the center line of the pen end of the detector and the center line of the collimator.

Description

用于集装箱或车辆的检查系统和用于该检查系统的对准系统Inspection system for container or vehicle and alignment system for the inspection system

技术领域 technical field

本发明涉及X或Gamma射线安全检查领域,特别是用于以集装箱或车辆为被检物件的X或Gamma射线检查系统及其对准系统和对准方法。 The invention relates to the field of X or Gamma ray safety inspection, in particular to an X or Gamma ray inspection system and its alignment system and alignment method for containers or vehicles as inspected objects.

背景技术 Background technique

“三点一线”是加速器靶点、探测器笔端中心线、准直器中心线共面的总称,调整“三点一线”的目的就是要求加速器靶点、探测器笔端中心线、准直器中心线(有时还包括校准装置的中心线等)都居于一个基准面内,如图1。 "Three points and one line" is the general term for the coplanarity of the accelerator target point, the center line of the detector pen end, and the collimator center line. The purpose of adjusting "three points and one line" is to require the accelerator target point, the center line of the detector pen end, and the The centerline of the instrument (and sometimes the centerline of the calibration device, etc.) all reside in a datum plane, as shown in Figure 1.

现有的测量方法是使用激光经纬仪手动测量加速器靶点、准直器中心线和探测器笔端中心线的对准情况。经纬仪十字线的竖线与探测器竖臂上、下端探测器中心线重合,并使经纬仪十字线的竖线尽量对正靶点中心。该种方法通过人眼进行判断,不够客观准确,与仪器的放置、调试,以及测量人的视觉感官有很大关系。 The existing measurement method is to use a laser theodolite to manually measure the alignment of the accelerator target point, the centerline of the collimator and the centerline of the probe tip. The vertical line of the theodolite reticle coincides with the center line of the detector at the upper and lower ends of the vertical arm of the detector, and the vertical line of the theodolite reticle should be aligned with the center of the target as much as possible. This method is judged by human eyes, which is not objective and accurate enough, and has a lot to do with the placement, debugging, and measurement of human visual senses.

并且,现在许多可移动的检查系统使用探测器臂支架,这些可移动的检查系统在到达新的检查地点后需要迅速展开支架以便开展工作。然而,探测器臂支架作为机械结构需要进一步调整,使得射线源、准直器与探测器位于一个平面内。因此,需要一种既准确实现对准又能够快速可靠地完成对准的对准系统和方法。 Also, many mobile inspection systems now use detector arm supports, and these mobile inspection systems need to quickly deploy the supports to carry out work after arriving at a new inspection location. However, the detector arm support needs to be further adjusted as a mechanical structure so that the ray source, collimator and detector are located in the same plane. Therefore, there is a need for an alignment system and method that can achieve alignment accurately and quickly and reliably.

发明内容 Contents of the invention

鉴于此,本发明的目的在于解决上述问题,实现检查系统的射线束与探测器模块的快速对准。 In view of this, the purpose of the present invention is to solve the above-mentioned problems, and realize the rapid alignment of the ray beam of the inspection system and the detector module.

本发明的第一方面,提供一种用于集装箱或车辆检查系统的对准系 统,包括测量模块,测量模块是多个传感器构成的传感器阵列,每个传感器配置成测量射线强度;测量模块中的一列传感器布置在集装箱或车辆检查系统的探测器模块的纵向中心线上,当测量模块的布置在探测器模块的纵向中心线上的所述一列传感器测量的射线强度值是射线强度值曲线的最大值时,确定射线对准探测器模块。 A first aspect of the present invention provides an alignment system for a container or vehicle inspection system, including a measurement module, the measurement module is a sensor array composed of a plurality of sensors, each sensor is configured to measure the intensity of radiation; in the measurement module A row of sensors arranged on the longitudinal centerline of the detector module of the container or vehicle inspection system, when the radiation intensity value measured by the row of sensors arranged on the longitudinal centerline of the detector module of the measurement module is the curve of the radiation intensity value At the maximum value, make sure that the ray is aligned with the detector module.

根据本发明的一方面,所述传感器阵列与集装箱或车辆检查系统的探测器模块相对于彼此大致垂直地排列布置。 According to an aspect of the present invention, the sensor array and the detector module of the container or vehicle inspection system are arranged substantially vertically relative to each other.

本发明的第一方面,提供一种用于集装箱或车辆检查系统的对准系统,包括测量模块,所述测量模块是多个传感器构成的一个传感器排,每个传感器配置成测量射线强度;所述测量模块中的一个传感器布置在集装箱或车辆检查系统的探测器模块的纵向中心线上,当测量模块的布置在探测器模块的纵向中心线上的所述一个传感器测量的射线强度值是射线强度值曲线的最大值时,确定射线对准探测器模块。 A first aspect of the present invention provides an alignment system for a container or vehicle inspection system, including a measurement module, the measurement module is a sensor row composed of a plurality of sensors, and each sensor is configured to measure radiation intensity; One of the sensors in the measurement module is arranged on the longitudinal centerline of the detector module of the container or vehicle inspection system, when the ray intensity value measured by the one sensor of the measurement module arranged on the longitudinal centerline of the detector module is ray When the maximum value of the intensity value curve is reached, it is determined that the ray is aimed at the detector module.

根据本发明的一方面,所述传感器排与集装箱或车辆检查系统的探测器模块相对于彼此大致垂直排列布置。 According to an aspect of the present invention, the sensor row and the detector module of the container or vehicle inspection system are arranged substantially vertically with respect to each other.

根据本发明的一方面,所述传感器是小型探测器,所述小型探测器的尺寸小于集装箱或车辆检查系统的探测器模块的探测器晶体尺寸,所述测量模块中的一个小型探测器设置在集装箱或车辆检查系统的探测器模块的纵向中心线上。 According to an aspect of the present invention, the sensor is a small detector, the size of which is smaller than the detector crystal size of the detector module of the container or vehicle inspection system, and one small detector in the measurement module is arranged at The longitudinal centerline of the detector module of the container or vehicle inspection system.

根据本发明的一方面,设置在集装箱或车辆检查系统的探测器模块的纵向中心线上的所述传感器是所述测量模块中点的传感器。 According to an aspect of the present invention, the sensor arranged on the longitudinal centerline of the detector module of the container or vehicle inspection system is a sensor measuring the middle point of the module.

根据本发明的一方面,当测量模块上的位于探测器模块中点处的传感器测量的射线强度值最大时确定通过准直器的射线已经对准探测器模块。 According to one aspect of the present invention, it is determined that the ray passing through the collimator has been aimed at the detector module when the ray intensity value measured by the sensor on the measurement module located at the midpoint of the detector module is the largest.

本发明的第一方面,提供一种用于集装箱或车辆的检查系统,包括射线源、准直器、探测器臂以及安装在探测器臂上的探测器模块,射线源、准直器以及探测器模块布置成形成检查通道,射线源发射的射线经过准直器入射到被检查物体由探测器模块收集以完成检查,还包括上述的对准系统。 The first aspect of the present invention provides an inspection system for containers or vehicles, including a ray source, a collimator, a detector arm and a detector module installed on the detector arm, a ray source, a collimator, and a detector The detector module is arranged to form an inspection channel, the rays emitted by the ray source pass through the collimator and are incident on the inspected object to be collected by the detector module to complete the inspection, which also includes the above-mentioned alignment system.

附图说明 Description of drawings

图1示出射线源、准直器以及探测器模块在探测器臂上分布的探测器期望所处的平面; Fig. 1 shows the plane where the detector is expected to be located where the radiation source, the collimator and the detector module are distributed on the detector arm;

图2是射线源、准直器以及探测器模块在探测器臂上分布的探测器另一视图; Fig. 2 is another view of the detector in which the ray source, collimator and detector modules are distributed on the detector arm;

图3a是根据本发明一个实施例的测量模块,其横向布置在探测器模块上; Figure 3a is a measurement module according to an embodiment of the present invention, which is arranged laterally on a detector module;

图3b是是根据本发明一个实施例的测量模块,其横向布置在探测器模块上; Fig. 3b is a measurement module according to an embodiment of the present invention, which is arranged laterally on the detector module;

图4是根据本发明一个实施例的测量模块的具体尺寸; Fig. 4 is the specific size of the measuring module according to one embodiment of the present invention;

图5是准直器对准探测器模块中线位置时测量模块测量的射线强度分布; Fig. 5 is the ray intensity distribution measured by the measurement module when the collimator is aligned with the centerline position of the detector module;

图6和7是准直器偏离探测器模块中线位置时测量模块测量的射线强度分布。 Figures 6 and 7 show the distribution of ray intensity measured by the measurement module when the collimator deviates from the centerline position of the detector module.

具体实施方式 Detailed ways

现在对本发明的实施例提供详细参考,其范例在附图中说明,图中相同的数字全部代表相同的元件。为解释本发明下述实施例将参考附图被描述。 Reference will now be made in detail to embodiments of the invention, examples of which are illustrated in the accompanying drawings, wherein like numerals refer to like elements throughout. The following embodiments will be described by referring to the figures in order to explain the present invention.

在本发明的一个实施例中,应用于X或Gamma射线集装箱或车辆检查系统包括射线源1、准直器2以及安装在探测器臂上的探测器模块3。射线源1可以是X射线加速器或伽马射线加速器。而为了获得更好的准直射线,可以在加速器出射口处设置准直器2。本领域技术人员应该知道,也可以使用其他装置以便获得想要的射线,例如直接发射准直射线的装置。探测器模块3设置在探测器臂4上。探测器臂4包括探测器横臂41和探测器竖臂42,当探测器臂4展开,探测器横臂41和探测器竖臂42上的探测器3接收经由准直器2准直后的透射过被检查物体的射线束,从而实现检查的目的。也就是说,在使用时,射线源1、准直器2以及探测器模块3构成了检 查通道,如图2所示。 In one embodiment of the present invention, a container or vehicle inspection system applied to X or Gamma rays includes a radiation source 1 , a collimator 2 and a detector module 3 installed on a detector arm. The ray source 1 can be an X-ray accelerator or a gamma ray accelerator. In order to obtain better collimated rays, a collimator 2 may be provided at the exit port of the accelerator. Those skilled in the art should know that other devices can also be used in order to obtain the desired radiation, such as a device that directly emits collimated radiation. The detector module 3 is arranged on the detector arm 4 . The detector arm 4 includes a detector cross arm 41 and a detector vertical arm 42. When the detector arm 4 is unfolded, the detector 3 on the detector cross arm 41 and the detector vertical arm 42 receives the collimated The ray beam transmitted through the object to be inspected, so as to achieve the purpose of inspection. That is to say, when in use, the ray source 1, the collimator 2 and the detector module 3 constitute an inspection channel, as shown in Figure 2.

应用于X或Gamma射线集装箱或车辆检查系统包括对准系统,对准系统用以对准射线源1、准直器2和探测器模块3。 The container or vehicle inspection system applied to X or Gamma rays includes an alignment system, which is used to align a ray source 1 , a collimator 2 and a detector module 3 .

对准系统包括测量模块5。测量模块5布置在探测器模块3上。在一个实施例中,测量模块5设置在探测器模块3臂4或架4上。测量模块5布置成接收射线源1发出的射线。如图3所示,测量模块5沿横向延伸,探测器模块3沿纵向延伸。 The alignment system includes a measurement module 5 . The measuring module 5 is arranged on the detector module 3 . In one embodiment, the measurement module 5 is arranged on the arm 4 or the frame 4 of the detector module 3 . The measurement module 5 is arranged to receive the radiation emitted by the radiation source 1 . As shown in FIG. 3 , the measuring module 5 extends laterally, and the detector module 3 extends longitudinally.

在本发明的实施例中,为了确定探测器模块3的位置,测量模块5设置在检查系统的探测器模块3的位置处,以便通过测量模块5测量准直器2的取向,即射线的落点位置,并通过测量结果调节准直器2朝向探测器模块3。在本实施例中,测量模块5布置在设置有探测器模块3的探测器臂4上,并且保证探测器模块3横向的中线或探测器臂4的横向方向上的中线与测量模块5的某一已知的部位对应,例如与测量模块5的中点对应。此处所说的探测器模块3的中线以及探测器模块3的探测器臂4或架4的中线意义相同,即探测器沿竖直方向布置,沿竖直方向的中线将探测器臂4分为相等的两半。 In an embodiment of the present invention, in order to determine the position of the detector module 3, the measurement module 5 is arranged at the position of the detector module 3 of the inspection system, so that the orientation of the collimator 2 is measured by the measurement module 5, that is, the fall of the ray. point position, and adjust the collimator 2 to the detector module 3 based on the measurement results. In this embodiment, the measuring module 5 is arranged on the detector arm 4 provided with the detector module 3, and it is ensured that the transverse centerline of the detector module 3 or the transverse centerline of the detector arm 4 is in line with a certain position of the measuring module 5. A known location corresponds, for example, to the midpoint of the measuring module 5 . The midline of the detector module 3 mentioned here and the midline of the detector arm 4 or frame 4 of the detector module 3 have the same meaning, that is, the detectors are arranged along the vertical direction, and the detector arm 4 is divided into two parts along the vertical midline. equal halves.

在本发明的实施例中,将测量模块5放置在探测器臂4上,如图2所示。测量模块5由多个探测器晶体6构成,这些探测器晶体6可以比检查系统的成像探测器模块3的探测器晶体6尺寸小,或者相对于检查系统的成像探测器模块的探测器晶体6而言可以是小型探测器。优选地,测量模块5中每块小的探测器晶体6的宽度可以为测量模块5的1/n,如图3a所示。N是整数,可以根据需要进行选择。也就是说,测量模块5可以由若干个小探测器晶体6并排地排列,组合形成一个长条或细长的块形体6。测量模块5的总宽度大于系统探测器模块3的宽度,如图4所示。测量模块5的长度方向沿探测器模块3的横向延伸。 In the embodiment of the present invention, the measurement module 5 is placed on the detector arm 4, as shown in FIG. 2 . The measurement module 5 is composed of a plurality of detector crystals 6 which may be smaller in size than, or relative to, the detector crystals 6 of the imaging detector module 3 of the inspection system It can be a small detector. Preferably, the width of each small detector crystal 6 in the measurement module 5 may be 1/n of the measurement module 5, as shown in Fig. 3a. N is an integer and can be selected as required. That is to say, the measurement module 5 can be composed of several small detector crystals 6 arranged side by side to form a long or slender block-shaped body 6 . The total width of the measurement module 5 is greater than the width of the system detector module 3 , as shown in FIG. 4 . The length direction of the measurement module 5 extends along the transverse direction of the detector module 3 .

测量模块5通过机械方式定位在探测器模块3上,并且长条形的测量模块5可以布置成使得其中点位于探测器臂4的中线上,长条形的测量模块5的长度延伸方向与探测器臂4的长度延伸方向垂直。由此,可以精细 地、定量地测量束流中心的具体位置。 The measuring module 5 is mechanically positioned on the detector module 3, and the elongated measuring module 5 can be arranged such that its midpoint is located on the center line of the detector arm 4, and the length extension direction of the elongated measuring module 5 is in line with the detection The length extending direction of device arm 4 is vertical. Thus, the specific position of the beam center can be precisely and quantitatively measured.

每个测量模块5测得的数据可传输到电脑上进行分析。 The data measured by each measurement module 5 can be transmitted to a computer for analysis.

在本发明的一个实施例中,测量模块5的总宽度为系统探测器模块3的宽度的4至5倍。例如,探测器模块3宽度为10mm,测量模块5中每块小探测器晶体6的宽度为1.5mm,整个测量模块5由32块小探测器晶体6组成,宽度为32*1.5=48mm,如图4所示。 In one embodiment of the present invention, the total width of the measurement module 5 is 4 to 5 times the width of the system detector module 3 . For example, the width of the detector module 3 is 10mm, and the width of each small detector crystal 6 in the measurement module 5 is 1.5mm, and the whole measurement module 5 is made up of 32 small detector crystals 6, and the width is 32*1.5=48mm, such as Figure 4 shows.

当射线源1发射射线,经过准直器2准直后,射线束照射测量模块5,准直后的射线入射到测量模块5的多个探测器晶体6,其中射线正入射的探测器晶体6接收到的射线强度最大,在正入射的探测器晶体6附近的探测器晶体6接收到的射线的能量逐渐减小,即,探测器晶体6测量的射线强度随着它们离开正入射处的探测器晶体6的距离增大而减小。图5示出当测量模块5的中心位于探测器臂4中线上的时候,32个探测器晶体6分别测量的射线束的强度值形成的曲线。 When the radiation source 1 emits radiation, after being collimated by the collimator 2, the radiation beam irradiates the measurement module 5, and the collimated radiation is incident on a plurality of detector crystals 6 of the measurement module 5, wherein the detector crystal 6 of which the radiation is incident The received ray intensity is the largest, and the energy of the ray received by the detector crystal 6 near the normal incident detector crystal 6 decreases gradually, that is, the ray intensity measured by the detector crystal 6 is detected as they leave the normal incident place. The distance between the device crystal 6 increases and decreases. FIG. 5 shows the curves formed by the intensity values of the ray beams respectively measured by the 32 detector crystals 6 when the center of the measurement module 5 is located on the centerline of the detector arm 4 .

由图5可以看到,由于准直后的射线对准探测器臂4的中线,因而在测量模块5中间的探测器晶体6探测到的射线强度最强,即图中曲线的最高点(图中Y轴是测量的射线强度归一化的值)。离开测量模块5中点的探测器晶体6测量到的射线强度随离开中点处的距离增大而减小。根据本发明的实施例,使用如图5所示的曲线判断对准时具有有利的优点,例如,操作者根据曲线的位置可以直观地判断射线的峰值的位置,直观地掌握将要调整的方向。 As can be seen from Fig. 5, since the collimated rays are aimed at the center line of the detector arm 4, the intensity of the rays detected by the detector crystal 6 in the middle of the measurement module 5 is the strongest, that is, the highest point of the curve in the figure (Fig. The middle Y-axis is the normalized value of the measured ray intensity). The radiation intensity measured by the detector crystal 6 away from the midpoint of the measurement module 5 decreases as the distance away from the midpoint increases. According to the embodiment of the present invention, using the curve shown in FIG. 5 to judge alignment has favorable advantages. For example, the operator can intuitively judge the position of the peak value of the ray according to the position of the curve, and intuitively grasp the direction to be adjusted.

当准直器2没有对准测量模块5的中点,即探测器臂4的中线时,图5中的曲线的最高点将偏离位于测量模块5的中心(因为探测器晶体6的位置已经被固定,中心的探测器晶体6的位置是已知的,并且其测量的射线强度值落在Y轴上)。 When the collimator 2 is not aligned with the midpoint of the measurement module 5, i.e. the centerline of the detector arm 4, the highest point of the curve in Fig. 5 will deviate from the center of the measurement module 5 (because the position of the detector crystal 6 has been adjusted fixed, the position of the central detector crystal 6 is known, and its measured ray intensity value falls on the Y axis).

图6和图7分别示出准直器2偏离探测器臂4中线时测量到的强度曲线。本发明利用强度曲线的峰值偏离Y轴即可以显示准直器2或X射线的偏离(也可以认为是探测器模块的不对准,本领域技术人员应该理解不对准是相对的,即作为发射侧的X射线和准直器组合和作为接收侧的探测器 模块),并且通过调节准直器2的方向使得强度峰值被调节至Y轴以将准直器2的方向调节至探测器臂4的中线。由于使用这种类似抛物线的曲线,操作者可以直观地判断偏离,通过曲线的顶峰偏离Y轴可以大约估计偏离程度,使得对准操作容易。 6 and 7 respectively show the intensity curves measured when the collimator 2 deviates from the centerline of the detector arm 4 . The present invention can display the deviation of the collimator 2 or X-ray by using the peak value of the intensity curve to deviate from the Y axis (also can be considered as the misalignment of the detector module, those skilled in the art should understand that misalignment is relative, that is, as the emission side X-ray and collimator combination and as the detector module on the receiving side), and by adjusting the direction of the collimator 2 so that the intensity peak is adjusted to the Y axis to adjust the direction of the collimator 2 to the direction of the detector arm 4 midline. Due to the use of such a parabola-like curve, the operator can intuitively judge the deviation, and the degree of deviation can be roughly estimated by the deviation of the peak of the curve from the Y axis, making the alignment operation easy.

由此,本发明的技术方案避免了手动调节的不确定性和随机性以及这种随机性对后续检查的影响,并且本发明的方法简单明了,调节过程直观迅速,方便操作者快速地完成检查前的准备工作。当操作者观察到,曲线峰值在Y轴右侧,即可以将探测器模块向右侧调整。如果探测器模块所处的支架被固定,则可以调节X射线和准直器,是射线束或射线束向左。在实际操作中,操作者通过观察曲线判断直观,而不用摸索调整的方向,使得检查的准备工作容易且快速。 Therefore, the technical solution of the present invention avoids the uncertainty and randomness of manual adjustment and the impact of such randomness on subsequent inspections, and the method of the present invention is simple and clear, and the adjustment process is intuitive and fast, which is convenient for the operator to quickly complete the inspection preparatory work. When the operator observes that the peak of the curve is on the right side of the Y axis, the detector module can be adjusted to the right side. If the bracket on which the detector module is located is fixed, the X-ray and collimator can be adjusted so that the ray beam or the ray beam is to the left. In actual operation, the operator judges intuitively by observing the curve instead of groping for the direction of adjustment, which makes the preparation for inspection easy and fast.

为了调节准直器2的取向,可以设置调节装置以调节准直器2的取向。例如,可以设置马达和枢转装置,马达带动枢转装置枢转准直器2调节准直器2的朝向。由此,实现自动化调节。 In order to adjust the orientation of the collimator 2 , adjustment means may be provided to adjust the orientation of the collimator 2 . For example, a motor and a pivoting device may be provided, and the motor drives the pivoting device to pivot the collimator 2 to adjust the orientation of the collimator 2 . Thus, automatic adjustment is realized.

根据本发明的实施例,应用于X或Gamma射线集装箱或车辆检查系统对准加速器和探测器的方法,包括:1)利用加速器发射射线;2)利用测量模块5测量射线强度分布;3)判断射线源1、准直器2和臂4的相对位置,进行调节;4)重复2、3步骤,直至经过准直器2的射线束对准探测器模块3。 According to an embodiment of the present invention, the method for aligning an accelerator and a detector applied to an X or Gamma ray container or vehicle inspection system includes: 1) using the accelerator to emit rays; 2) using the measurement module 5 to measure the intensity distribution of the rays; 3) judging The relative positions of the ray source 1 , the collimator 2 and the arm 4 are adjusted; 4) Steps 2 and 3 are repeated until the ray beam passing through the collimator 2 is aligned with the detector module 3 .

具体地,例如,当显示图6的曲线时,操作者可以将准直器2向右调节,图6中的曲线的强度峰值被移至Y轴。当显示图7的曲线时,操作者可以将准直器2向左调节,图7中的曲线的强度峰值被移至Y轴。 Specifically, for example, when the curve in FIG. 6 is displayed, the operator can adjust the collimator 2 to the right, and the intensity peak of the curve in FIG. 6 is moved to the Y axis. When the curve of FIG. 7 is displayed, the operator can adjust the collimator 2 to the left, and the intensity peak of the curve in FIG. 7 is moved to the Y axis.

当加速器靶点、探测器笔端中心线、准直器2中心线完全对准时,每个测量模块5中各个探测器晶体6接收到的X或Gamma射线的信号强度都应如图5所示,即射线束中心可以打到在每个测量模块5的最中间,即每个探测器模块3的笔端中心线。 When the accelerator target point, the centerline of the detector pen end, and the centerline of the collimator 2 are fully aligned, the signal strength of the X or Gamma rays received by each detector crystal 6 in each measurement module 5 should be as shown in Figure 5, That is, the center of the ray beam can hit the middle of each measurement module 5 , that is, the centerline of the pen end of each detector module 3 .

根据臂4或架4上各个探测器模块3测量得到的射线强度分布,可以判断出射线源1、准直器2以及臂4或架4的相对位置关系,并计算出位置 偏移量和角度的偏转量,对系统进行修正,最终所有探测器模块3测量得到的强度分布为如图5所示的抛物线形的曲线。 According to the ray intensity distribution measured by each detector module 3 on the arm 4 or frame 4, the relative positional relationship between the ray source 1, the collimator 2 and the arm 4 or frame 4 can be judged, and the position offset and angle can be calculated The deflection amount is corrected for the system, and finally the intensity distribution measured by all the detector modules 3 is a parabolic curve as shown in FIG. 5 .

在根据本发明的另一实施例中,测量模块5的某个探测器晶体6定位在探测器模块3的中线上。由于已知该探测器晶体6位于中线上,因此,只需要调节准直器2的取向使得探测到的射线强度最大值出现在该已知的探测器晶体6的位置上即可以知道准直器2对准探测器模块3的中线。即,在本实施例中,测量模块5的中心并不在探测器模块3的中线上。 In another embodiment according to the invention, a certain detector crystal 6 of the measurement module 5 is positioned on the center line of the detector module 3 . Since it is known that the detector crystal 6 is located on the center line, it is only necessary to adjust the orientation of the collimator 2 so that the maximum value of the detected ray intensity occurs at the known position of the detector crystal 6 and the collimator can be known. 2 Align the center line of the detector module 3. That is, in this embodiment, the center of the measurement module 5 is not on the center line of the detector module 3 .

在根据本发明的另一实施例中,测量模块5是一个整体。测量模块5是个长条形的测量模块5,可以是一组传感器的阵列,传感器阵列中的每个传感器的位置是确定的并且是已知的。由此,每个传感器接收到的射线束强度是已知的。也就是说,每个位置上接收到的射线束的强度是已知的。由此,通过观察射线束强度的峰值的位置,可以确定准直器2的取向。与上述的实施例类似,可以调整准直器2的取向,使得准直器2发射的射线束朝向想要的位置,例如朝向探测器模块3的中线。 In another embodiment according to the present invention, the measuring module 5 is a whole. The measurement module 5 is a strip-shaped measurement module 5, which may be a sensor array, and the position of each sensor in the sensor array is determined and known. Thus, the intensity of the beam received by each sensor is known. That is, the intensity of the received ray beam at each location is known. Thus, by observing the position of the peak of the beam intensity, the orientation of the collimator 2 can be determined. Similar to the above-mentioned embodiments, the orientation of the collimator 2 can be adjusted so that the ray beam emitted by the collimator 2 faces a desired position, for example, toward the centerline of the detector module 3 .

在根据本发明的另一实施例中,如图3b所示,用于集装箱或车辆检查系统的对准系统,包括测量模块5,测量模块5是多个传感器构成的传感器阵列,每个传感器配置成测量射线强度。测量模块中的一列传感器布置在集装箱或车辆检查系统的探测器模块的纵向中心线上。当测量模块的布置在探测器模块的纵向中心线上的所述一列(当测量模块的小的传感器体积比探测器模块小得多时,可以是多列小的传感器)传感器测量的射线强度值是射线强度值曲线的最大值时,确定射线是对准探测器模块。 In another embodiment according to the present invention, as shown in Figure 3b, the alignment system for container or vehicle inspection system includes a measurement module 5, the measurement module 5 is a sensor array composed of a plurality of sensors, each sensor configuration To measure the radiation intensity. An array of sensors in the measurement module is arranged on the longitudinal centerline of the detector module of the container or vehicle inspection system. When the row (when the small sensor volume of the measurement module is much smaller than the detector module, it can be multiple rows of small sensors) of the measurement module arranged on the longitudinal centerline of the detector module, the ray intensity value measured by the sensor is When the maximum value of the ray intensity value curve is reached, it is determined that the ray is aimed at the detector module.

本领域技术人员应该知道,探测器晶体6可以具有一定的体积,测量模块5沿探测器臂4的大体横向布置,当测量模块5与探测器臂4之间形成的角度在接近90度的一定范围内时,本发明的技术方案仍然是可以实现的。 Those skilled in the art should know that the detector crystal 6 can have a certain volume, and the measurement module 5 is generally arranged laterally along the detector arm 4. When the angle formed between the measurement module 5 and the detector arm 4 is close to 90 degrees, When within the range, the technical scheme of the present invention is still achievable.

根据本发明的一个实施例,提供用于准集装箱或车辆的检查系统的对准方法。检查系统包括射线源1、准直器2以及安装在探测器臂4上的探测器模块3,射线源1、准直器2以及探测器模块3布置成形成检查 通道,射线源1发射的射线经过准直器2入射到被检查物体由探测器模块3收集以完成检查。对准方法包括,设置测量模块5,所述测量模块5布置成接收从射线源1发出并经过准直器2的射线。对准方法还包括通过测量模块5测量的射线强度峰值确定射线主束的位置。当测量模块5测量显示位于探测器模块3纵向中心线处检测到的射线束强度最大(即射线主束)时,确定射线源1发出的射线经过准直器2的射线主束对准了探测器模块3。 According to one embodiment of the present invention, an alignment method for an inspection system for aligning containers or vehicles is provided. The inspection system includes a ray source 1, a collimator 2, and a detector module 3 installed on a detector arm 4. The ray source 1, the collimator 2, and the detector module 3 are arranged to form an inspection channel, and the rays emitted by the ray source 1 After the collimator 2 is incident on the object to be inspected, it is collected by the detector module 3 to complete the inspection. The alignment method includes setting a measurement module 5 arranged to receive radiation emitted from the radiation source 1 and passing through the collimator 2 . The alignment method also includes determining the position of the main beam of rays through the peak value of the ray intensity measured by the measurement module 5 . When the measurement module 5 measures and shows that the intensity of the ray beam detected at the longitudinal centerline of the detector module 3 is the largest (i.e. the ray main beam), it is determined that the ray emitted by the ray source 1 passes through the main ray beam of the collimator 2 and is aligned with the detector module 3. Controller module 3.

本领域技术人员应该理解,本发明所提到的X射线和伽马射线源可以是其他射线源。本发明所提到射线束指的是任何形式用于照射的射线形式,可以是笔状束,可以是扇形射线,也可以是其他任何所需的射线形式。 Those skilled in the art should understand that the X-ray and gamma-ray sources mentioned in the present invention may be other ray sources. The ray beam mentioned in the present invention refers to any form of ray used for irradiation, which may be a pencil beam, a fan-shaped ray, or any other desired ray form.

尽管已经参考本发明的典型实施例,具体示出和描述了本发明,但本领域普通技术人员应当理解,在不脱离所附权利要求所限定的本发明的精神和范围的情况下,可以对这些实施例进行形式和细节上的多种改变。 Although the present invention has been particularly shown and described with reference to exemplary embodiments of the present invention, those skilled in the art should understand that, without departing from the spirit and scope of the present invention as defined by the appended claims, other The embodiments undergo various changes in form and detail.

Claims (8)

1., for an alignment system for container or vehicle inspection system, it is characterized in that,
Comprise measurement module, measurement module is the sensor array that multiple sensor is formed, and each sensor is configured to measure transmitted intensity;
A sensor in measurement module is arranged on the longitudinal centre line of the detector module of container or vehicle inspection system, when the transmitted intensity value of the described sensor measurement be arranged on the longitudinal centre line of detector module of measurement module is the maximal value of transmitted intensity value curve, determine ray alignment detector module.
2., as claimed in claim 1 for the alignment system of container or vehicle inspection system, it is characterized in that,
The detector module of described sensor array and container or vehicle inspection system relative to each other generally perpendicularly arranged.
3., for an alignment system for container or vehicle inspection system, it is characterized in that,
Comprise measurement module, described measurement module is the rows of sensors that multiple sensor is formed, and each sensor is configured to measure transmitted intensity;
A sensor in described measurement module is arranged on the longitudinal centre line of the detector module of container or vehicle inspection system, when the transmitted intensity value of the described sensor measurement be arranged on the longitudinal centre line of detector module of measurement module is the maximal value of transmitted intensity value curve, determine ray alignment detector module.
4., as claimed in claim 3 for the alignment system of container or vehicle inspection system, it is characterized in that,
The detector module relative to each other substantially vertical arranged of described rows of sensors and container or vehicle inspection system.
5. the alignment system for container or vehicle inspection system as described in claim 3 or 4, is characterized in that,
Described sensor is minimonitor, the size of described minimonitor is less than the detector crystal size of the detector module of container or vehicle inspection system, and a minimonitor in described measurement module is arranged on the longitudinal centre line of the detector module of container or vehicle inspection system.
6. the alignment system for container or vehicle inspection system as described in claim 3 or 4, is characterized in that,
The described sensor be arranged on the longitudinal centre line of the detector module of container or vehicle inspection system is the sensor of described measurement module mid point.
7., as claimed in claim 6 for the alignment system of container or vehicle inspection system, it is characterized in that,
The ray alignment detector module by collimating apparatus is determined when the transmitted intensity value being positioned at the sensor measurement of detector module midpoint on measurement module is maximum.
8. the check system for container or vehicle, the detector module comprising radiographic source, collimating apparatus, detector arm and be arranged on detector arm, radiographic source, collimating apparatus and detector module are arranged to be formed and check passage, the ray that radiographic source is launched incides inspected object through collimating apparatus has collected inspection by detector module, it is characterized in that
Also comprise the alignment system according to any one of claim 1 to 7.
CN201420784654.3U 2014-12-11 2014-12-11 For container or the check system of vehicle and the alignment system for this check system Expired - Fee Related CN204314235U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104634796A (en) * 2014-12-11 2015-05-20 清华大学 Alignment system and alignment method for container or vehicle inspection system
CN106053499A (en) * 2016-07-20 2016-10-26 同方威视技术股份有限公司 X-ray examination system and method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104634796A (en) * 2014-12-11 2015-05-20 清华大学 Alignment system and alignment method for container or vehicle inspection system
WO2016091132A1 (en) * 2014-12-11 2016-06-16 清华大学 Alignment system and alignment method for container or vehicle detection system
US9910184B2 (en) 2014-12-11 2018-03-06 Tsinghua University Alignment system and method for container or vehicle inspection system
CN106053499A (en) * 2016-07-20 2016-10-26 同方威视技术股份有限公司 X-ray examination system and method
CN106053499B (en) * 2016-07-20 2019-07-05 同方威视技术股份有限公司 Ray inspection system and radiological survey X method

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