CN107202801A - A kind of computed tomograph scanner system - Google Patents
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Abstract
本发明涉及一种计算机断层扫描系统，包括滚筒，滚筒的内壁上设有射线发生器和探测器，滚筒的内部设有贯穿滚筒前后的传送带，传送带的转轴连接有第一电机，传送带上放置有被检测物，且传送带的两侧设有光电开关，滚筒外侧套接有滑环和皮带，滑环的一侧连接有碳刷，滚筒的顶部设有无线数据收发装置，无线数据收发装置与射线发生器和探测器通信连接，且无线数据收发装置连接第一计算机，皮带的一端连接有第二电机，第二电机连接有伺服控制器。本发明通过设置的滚筒配合传送带对被检测物进行多角度的检测，提高了对被检测物质判断的准确性和检测速度，能够满足各机场、火车站及汽车站的需要。
The invention relates to a computerized tomography system, which includes a drum, a ray generator and a detector are arranged on the inner wall of the drum, and a conveyor belt running through the front and back of the drum is arranged inside the drum, and a first motor is connected to the rotating shaft of the conveyor belt, and a The object to be detected, and there are photoelectric switches on both sides of the conveyor belt, a slip ring and a belt are sleeved on the outside of the roller, a carbon brush is connected to one side of the slip ring, and a wireless data transceiver device is installed on the top of the roller. The wireless data transceiver device and the ray The generator and the detector are connected in communication, and the wireless data transceiver is connected with the first computer, one end of the belt is connected with the second motor, and the second motor is connected with the servo controller. The invention performs multi-angle detection on the detected object through the arrangement of the roller and the conveyor belt, improves the accuracy and detection speed of the detection object, and can meet the needs of various airports, railway stations and bus stations.
Description
技术领域 technical field
本发明涉及医疗设备技术领域，特别涉及一种计算机断层扫描系统。 The invention relates to the technical field of medical equipment, in particular to a computer tomography system.
背景技术 Background technique
随着计算机技术，螺旋扫描及图像重建技术的进步，计算机断层扫描系统相关的技术也不断发展；应用多层螺旋扫描技术配合双能探测技术不仅可以检测物质的密度同时可以检测物质的有效原子序数，能够对物质做出质的判断；尤其是现今恐怖分子的恐怖活动接连发生的时期，做好安全检测工作不容怠慢，新产品的开发亟待解决。 With the progress of computer technology, helical scanning and image reconstruction technology, the technology related to computer tomography system is also developing continuously; the application of multi-layer helical scanning technology combined with dual-energy detection technology can not only detect the density of substances but also detect the effective atomic number of substances , to be able to make qualitative judgments on substances; especially in today's period when terrorist activities occur one after another, doing a good job in safety testing cannot be neglected, and the development of new products needs to be solved urgently.
目前国内还没有出现生产基于多层螺旋扫描技术安检系统的公司，各机场、火车站及汽车站还在使用基于线扫描的双能安检机，这类安检机有很大的缺陷，如：不能准确检测薄片炸弹，液体炸弹以及一些新出现的爆炸物品，且图像还是二维平面显示，对于操作员来说要做到更准确的判断还有一定的难度，必要时还要进行开包检查；随着旅客数量逐年的增加，这种检查方式必然会造成漏检、误检以及影响检查的速度等，在安检一种计算机断层扫描系统中，由于检测的对象是旅客的包裹，目的是能够检测出包裹中是否藏有违禁品，并不像医疗CT与工业CT那样要求细微的检查，因此，在检测包裹时没有必要变换采集的层厚，在设计时只需要设计固定排数的探测器，得到固定厚度和固定层数的图像即可，因此，其复杂程度比医疗CT与工业CT简单。为此，我们提出计算机断层扫描系统来解决上述问题。 At present, there is no company in China that produces security inspection systems based on multi-layer helical scanning technology. Airports, railway stations and bus stations are still using dual-energy security inspection machines based on line scanning. This type of security inspection machine has great defects, such as: cannot Accurately detect sheet bombs, liquid bombs and some new explosives, and the image is still displayed on a two-dimensional plane. It is still difficult for the operator to make a more accurate judgment, and it is necessary to open the package for inspection if necessary; As the number of passengers increases year by year, this inspection method will inevitably cause missed inspections, false inspections, and affect the speed of inspections. Whether there are contraband hidden in the package does not require subtle inspection like medical CT and industrial CT. Therefore, it is not necessary to change the thickness of the collected layer when detecting the package. It is only necessary to design a fixed number of detectors during design. It is enough to obtain an image with a fixed thickness and a fixed number of layers, so its complexity is simpler than that of medical CT and industrial CT. To this end, we propose a computed tomography system to solve the above problems.
发明内容 Contents of the invention
本发明的目的是为了解决背景技术而提出的一种计算机断层扫描系统。 The object of the present invention is to propose a computer tomography system to solve the background technology.
为了实现上述目的，本发明采用了如下技术方案： In order to achieve the above object, the present invention adopts the following technical solutions:
一种计算机断层扫描系统，包括滚筒，所述滚筒的内壁上设有射线发生器和探测器，所述滚筒的内部设有贯穿滚筒前后的传送带，所述传送带的转轴连接有第一电机，所述传送带上放置有被检测物，且传送带的两侧设有光电开关，所述滚筒外侧套接有滑环和皮带，所述滑环的一侧连接有碳刷，所述滚筒的顶部设有无线数据收发装置，所述无线数据收发装置与射线发生器和探测器通信连接，且无线数据收发装置连接第一计算机，所述皮带的一端连接有第二电机，所述第二电机连接有伺服控制器，所述第一电机、碳刷、伺服控制器和光电开关均电连接有交换机，所述第一计算机和交换机均连接有第二计算机，且第二计算机连接有控制器。 A computed tomography system, comprising a drum, a ray generator and a detector are arranged on the inner wall of the drum, and a conveyor belt running through the front and back of the drum is arranged inside the drum, and a first motor is connected to the rotating shaft of the conveyor belt. The object to be detected is placed on the conveyor belt, and the two sides of the conveyor belt are equipped with photoelectric switches. The outside of the roller is sleeved with a slip ring and a belt. One side of the slip ring is connected to a carbon brush. The top of the roller is equipped with a A wireless data transceiver device, the wireless data transceiver device communicates with the ray generator and the detector, and the wireless data transceiver device is connected to the first computer, one end of the belt is connected to a second motor, and the second motor is connected to a servo The controller, the first motor, the carbon brush, the servo controller and the photoelectric switch are all electrically connected to a switch, the first computer and the switch are connected to a second computer, and the second computer is connected to a controller.
在上述技术方案的基础上，可以有以下进一步的技术方案： On the basis of above-mentioned technical scheme, can have following further technical scheme:
所述射线发生器采用X射线发生器，所述探测器采用多线阵探测器，即在单排探测器的基础上增加探测器排数，X线球管旋转一周探测器可采集2层、4层、64层、128层，甚至更多层图像数据。多层的探测器包括数万个探测器单元呈二维阵列。可将其分成等宽型、非等宽型和混合型三种结构，在扫描系统运作的过程中，探测器与射线发生器保持固定位置不变，接受穿过被检测物后的透射射线的能量。 The ray generator adopts an X-ray generator, and the detector adopts a multi-line array detector, that is, on the basis of a single row of detectors, the number of detector rows is increased, and the X-ray tube rotates for one week and the detector can collect 2 layers, 4 layers, 64 layers, 128 layers, or even more layers of image data. The multi-layer detector includes tens of thousands of detector units in a two-dimensional array. It can be divided into three types: equal width type, non-equal width type and mixed type. During the operation of the scanning system, the detector and the ray generator keep a fixed position and receive the transmitted radiation after passing through the detected object. energy.
所述滑环采用中频技术将高压发生器小型化，并与X线球管连在一起形成X射线系统，固定在滑环转子上，随滑环同步运动，运用高速旋转的封闭滑环来代替机架运动器件的供电和传送数据的电缆，并利用碳刷将数据通过交换机传输给第二计算机。 The slip ring uses intermediate frequency technology to miniaturize the high-voltage generator, and connects it with the X-ray tube to form an X-ray system, which is fixed on the slip ring rotor and moves synchronously with the slip ring, and is replaced by a high-speed rotating closed slip ring The power supply of the moving parts of the rack and the data transmission cable, and the carbon brush is used to transmit the data to the second computer through the switch.
所述无线数据收发装置采用射频无线数据传输技术，与滑环共同作为数据传输的通道，以降低了滑环的复杂性。 The wireless data transceiving device adopts radio frequency wireless data transmission technology, and works together with the slip ring as a data transmission channel to reduce the complexity of the slip ring.
所述光电开关为一种光电传感器，被检测物对光束的遮挡或反射，由同步回路选通电路，从而检测物体有无，且物体不限于金属，所有能反射光线的物体均可被检测，当检测到有物体通过光电开关时，控制器控制整个系统开始运作。 The photoelectric switch is a kind of photoelectric sensor. When the detected object blocks or reflects the light beam, the synchronous loop gates the circuit to detect the presence or absence of the object, and the object is not limited to metal. All objects that can reflect light can be detected. When an object is detected passing through the photoelectric switch, the controller controls the whole system to start operation.
所述第一计算机为图像处理及物质识别计算机，所述第二计算机为控制计算机。 The first computer is an image processing and substance identification computer, and the second computer is a control computer.
本发明通过设置的滚筒配合传送带对被检测物进行多角度的检测，提高了对被检测物质判断的准确性和检测速度，能够满足各机场、火车站及汽车站等客流大的地方需要，通过设置无线数据收发装置，拓宽了数据传输的通道，并结合利用图像处理及物质识别计算机对被检测物进行三维立体成像，大大提高了成像的质量，通过设置的光电开关，可以控制扫描系统运行和停止，节省了大量的能源。 The invention detects the detected object from multiple angles through the set roller and the conveyor belt, which improves the accuracy and detection speed of the detected object, and can meet the needs of places with large passenger flows such as airports, railway stations and bus stations. The wireless data transceiver device is set up to widen the channel of data transmission, combined with the use of image processing and material recognition computer to perform three-dimensional imaging of the detected object, which greatly improves the quality of imaging. Through the set photoelectric switch, the operation and operation of the scanning system can be controlled Stop and save a lot of energy.
附图说明 Description of drawings
图1是本发明提出的一种计算机断层扫描系统结构示意图。 Fig. 1 is a schematic structural diagram of a computed tomography system proposed by the present invention.
图中：1滚筒、2射线发生器、3探测器、4传送带、5第一电机、6被检测物、7滑环、8碳刷、9无线数据收发装置、10皮带、11第一计算机、12第二电机、13伺服控制器、14光电开关、15交换机、16第二计算机、17控制器。 In the figure: 1 drum, 2 ray generator, 3 detector, 4 conveyor belt, 5 first motor, 6 detected object, 7 slip ring, 8 carbon brush, 9 wireless data transceiver, 10 belt, 11 first computer, 12 second motor, 13 servo controller, 14 photoelectric switch, 15 switch, 16 second computer, 17 controller.
具体实施方式 detailed description
下面结合具体实施例来对本发明进一步说明。 The present invention will be further described below in conjunction with specific embodiments.
参照图1，一种计算机断层扫描系统，包括滚筒1，所述滚筒1的内壁上设有射线发生器2和探测器3，所述射线发生器2采用X射线发生器，所述探测器3采用多线阵探测器，即在单排探测器的基础上增加探测器排数，X线球管旋转一周探测器可采集2层、4层、64层、128层，甚至更多层图像数据。多层的探测器包括数万个探测器单元呈二维阵列。可将其分成等宽型、非等宽型和混合型三种结构，在扫描系统运作的过程中，探测器3与射线发生器2保持固定位置不变，接受穿过被检测物6后的透射射线的能量。 Referring to Fig. 1, a kind of computed tomography system comprises drum 1, and the inner wall of described drum 1 is provided with ray generator 2 and detector 3, and described ray generator 2 adopts X-ray generator, and described detector 3 Multi-line array detectors are used, that is, the number of detector rows is increased on the basis of a single row of detectors, and the X-ray tube rotates once and the detectors can collect image data of 2 layers, 4 layers, 64 layers, 128 layers, or even more layers . The multi-layer detector includes tens of thousands of detector units in a two-dimensional array. It can be divided into three types: equal width type, non-equal width type and mixed type. During the operation of the scanning system, the detector 3 and the ray generator 2 keep a fixed position and accept the detected object 6. The energy of transmitted rays.
所述滚筒1的内部设有贯穿滚筒1前后的传送带4，所述传送带4的转轴连接有第一电机5，第一电机5用于带动传送带4转动，所述传送带4上放置有被检测物6，且传送带4的两侧设有光电开关14，所述光电开关14为一种光电传感器，被检测物6对光束的遮挡或反射，由同步回路选通电路，从而检测物体有无，且物体不限于金属，所有能反射光线的物体均可被检测，当检测到有物体通过光电开关14时，控制器17控制整个系统开始运作，所述滚筒1外侧套接有滑环7和皮带10，所述滑环7采用中频技术将高压发生器小型化，并与X线球管连在一起形成X射线系统，固定在滑环转子上，随滑环同步运动，运用高速旋转的封闭滑环来代替机架运动器件的供电和传送数据的电缆，所述滑环7的一侧连接有碳刷8，利用碳刷8可以将探测器3实时采集的数据通过交换机15传输给第二计算机16，所述滚筒1的顶部设有无线数据收发装置9，所述无线数据收发装置9采用射频无线数据传输技术，与滑环7共同作为数据传输的通道，以降低了滑环7的复杂性、成本以及维护费用。 The inside of the drum 1 is provided with a conveyor belt 4 that runs through the front and rear of the drum 1. The rotating shaft of the conveyor belt 4 is connected to a first motor 5, and the first motor 5 is used to drive the conveyor belt 4 to rotate. The detected object is placed on the conveyor belt 4. 6, and both sides of the conveyor belt 4 are provided with a photoelectric switch 14, the photoelectric switch 14 is a photoelectric sensor, the object 6 is blocked or reflected by the light beam, and the synchronous loop gates the circuit to detect the presence or absence of the object, and Objects are not limited to metal, all objects that can reflect light can be detected, when an object is detected passing through the photoelectric switch 14, the controller 17 controls the entire system to start to operate, and the outer side of the drum 1 is sleeved with a slip ring 7 and a belt 10 , the slip ring 7 uses intermediate frequency technology to miniaturize the high-voltage generator, and connects it with the X-ray tube to form an X-ray system, which is fixed on the slip ring rotor and moves synchronously with the slip ring, using a high-speed rotating closed slip ring To replace the power supply of the rack moving parts and the cable for transmitting data, one side of the slip ring 7 is connected with a carbon brush 8, and the data collected by the detector 3 in real time can be transmitted to the second computer 16 through the switch 15 by using the carbon brush 8 , the top of the drum 1 is provided with a wireless data transceiver device 9, the wireless data transceiver device 9 adopts radio frequency wireless data transmission technology, together with the slip ring 7 as a data transmission channel, to reduce the complexity of the slip ring 7, costs and maintenance costs.
所述无线数据收发装置9与射线发生器2和探测器3通信连接，且无线数据收发装置9连接第一计算机11，所述皮带10的一端连接有第二电机12，第二电机12通过皮带10带动滚筒1进行旋转，使射线发生器2和探测器3对被检测物6进行全方位的扫描，所述第二电机12连接有伺服控制器13，伺服控制器13用于精确的控制第二电机12的转动量，所述第一电机5、碳刷8、伺服控制器13和光电开关14均电连接有交换机15，所述第一计算机11和交换机15均连接有第二计算机16，所述第一计算机11为图像处理及物质识别计算机，用于对被检测物进行三维立体成像，所述第二计算机16为控制计算机，且第二计算机16连接有控制器17，通过控制器17可以对整套系统进行调控。 The wireless data transceiver device 9 is communicatively connected with the ray generator 2 and the detector 3, and the wireless data transceiver device 9 is connected with the first computer 11, and one end of the belt 10 is connected with a second motor 12, and the second motor 12 passes through the belt. 10 drives the drum 1 to rotate, so that the ray generator 2 and the detector 3 scan the detected object 6 in all directions. The second motor 12 is connected with a servo controller 13, and the servo controller 13 is used to precisely control the first The amount of rotation of the second motor 12, the first motor 5, the carbon brush 8, the servo controller 13 and the photoelectric switch 14 are all electrically connected to the switch 15, and the first computer 11 and the switch 15 are all connected to the second computer 16, The first computer 11 is an image processing and substance identification computer, which is used to perform three-dimensional imaging on the object to be detected. The second computer 16 is a control computer, and the second computer 16 is connected with a controller 17, through the controller 17 The entire system can be regulated.
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，根据本发明的技术方案及其发明构思加以等同替换或改变，都应涵盖在本发明的保护范围之内。 The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any person familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention Any equivalent replacement or change of the inventive concepts thereof shall fall within the protection scope of the present invention.
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