WO2019037488A1 - 射线照射装置以及安全检测设备 - Google Patents
射线照射装置以及安全检测设备 Download PDFInfo
- Publication number
- WO2019037488A1 WO2019037488A1 PCT/CN2018/087676 CN2018087676W WO2019037488A1 WO 2019037488 A1 WO2019037488 A1 WO 2019037488A1 CN 2018087676 W CN2018087676 W CN 2018087676W WO 2019037488 A1 WO2019037488 A1 WO 2019037488A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- radiation
- mover
- source
- irradiation apparatus
- opening
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
Links
Images
Classifications
-
- 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
Definitions
- the present application relates to the field of nuclear technology applications, and in particular, to a radiation irradiation device and a safety detection device.
- radiological safety testing equipment has been widely used in stations, subways, airports, customs, ports, nuclear power plants, government agencies, postal inspection centers, courts, conference venues, etc., through the rays passing through the object to be tested, the detectors set up on the other side
- the signal is collected to obtain the intensity of the attenuation after the radiation penetrates different substances, to distinguish the density of the detected object, to obtain different grayscale images, and to perform security inspection on the object or the vehicle.
- a dual projection radiation imaging detection technique for large trucks and containers is known in which an isotope is set as a radiation source.
- the radiation source is usually disposed in a thick shielding chamber, and an emission hole for emitting radiation is formed on the shielding chamber, and a shutter having a shielding function can block or expose the emission hole by reciprocating movement, so that the radiation can be at a certain frequency.
- the emission is performed from the emission hole, and the object to be detected is detected.
- the opening and closing speed of the shutter is slow, and the impact force is large, the opening time is long, the positioning is not accurate, and the radiation dose required for detection is large, and the shutter size is large.
- the present application provides a radiation irradiation device and a safety detection device, and aims to provide a radiation irradiation device and a safety detecting device which have a fast shutter opening and closing speed, a small impact, and a more precise positioning of a radiation source.
- a radiation irradiation apparatus comprising: a radiation source for providing radiation; a shielding case having a chamber for accommodating a radiation source and an opening communicating with the chamber such that radiation can pass through the opening Radiation; a scale for acquiring position information of the radiation source; and control means for controlling the movement of the radiation source to the first position or the second position according to the position information of the radiation source; wherein the first position is a radiation passage opening The location of the external radiation; the second location is where the radiation cannot radiate outward through the opening.
- a security detecting apparatus comprising the above-described radiation irradiating apparatus is provided.
- the illuminating device provided by the embodiment of the present application has an opening on the shielding shell.
- the device of the embodiment of the present application does not realize the radiation of the ray by opening and closing the shutter, but the control device controls the ray source to be in the first position such that the ray passes through the opening. Radiating outward, or the second position, so that the radiation cannot be radiated outward through the opening, since the weight of the radiation source is much smaller than the weight of the shutter, so that the emission of the higher frequency radiation can be achieved, and the shielding shell due to the radiation emission can also be reduced.
- the impact force generated by the body, and the position information of the radiation source can be accurately obtained by the scale, and the control device controls the movement of the radiation source according to the position information of the radiation source, and can more precisely control the radiation source to be in the first position or the second position due to the radiation
- the source position is accurate, so the opening size can be reduced, so that the radiation dose is reduced while reducing the radiation protection difficulty.
- FIG. 1 is a schematic structural view showing a radiation irradiation apparatus according to an embodiment of the present application.
- the radiation irradiation apparatus can be installed in a detection channel of a plurality of types of safety detection devices (not shown) for using an object to be detected as needed (exemplary
- the ground such as a vehicle or a container, emits a detection ray, and cooperates with a detector disposed in the detection channel and other units to detect the detected object.
- a radiation irradiation device includes a radiation source 10 for providing radiation; a shielding housing 20 having a first chamber 21 for accommodating the radiation source 10 and an opening 22 communicating with the first chamber 21 such that the radiation
- the radiation source 10 can be moved to the first position or the second position according to the position information of the radiation source 10;
- the first position is the position at which the radiation radiates outward through the opening 22;
- the second position is the position at which the radiation cannot be radiated outward through the opening 22.
- the shielding housing 20 of the radiation irradiation device provided by the embodiment of the present application has an opening 22, and the device of the embodiment of the present application does not realize radiation of radiation by opening and closing of the shutter, but the control device 40 controls the radiation source 10 to be in the first position.
- the radiation is radiated outward through the opening 22, or the second position is such that the radiation cannot be radiated outward through the opening, since the weight of the radiation source 10 is much smaller than the weight of the shutter, thereby enabling emission of higher frequency rays while also reducing Since the radiation strikes the impact force generated on the shield case 20, and the position information of the radiation source 10 can be accurately acquired by the scale 30, the control device 40 controls the movement of the radiation source 10 according to the position information of the radiation source 10, and can control the radiation more accurately.
- the source 10 is in the first position or the second position, and since the position of the radiation source 10 is accurate, the size of the opening 22 can be reduced, so that the radiation dose can be reduced while reducing the radiation protection difficulty.
- the shielded housing 20 is constructed of a material having shielding properties that provide better shielding and higher strength.
- it can be made of high-density metals or alloys such as lead, tungsten, lead alloy or tungsten alloy, uranium 238.
- the main body of the shielding case 20 has an elliptical spherical structure, can be mounted on the radiation irradiation device mounting seat of the detecting channel, has a first chamber 21 for accommodating the radiation source 10 therein, and the opening 22 provided on the shielding housing 20 is The actual illumination needs to be selected as a circular hole or a slit-like opening.
- the opening 22 may be directly opened on the main body of the shielding case 20.
- the position of the opening 22 may be determined according to the position of the radiation source 10 in the chamber as long as the radiation source 10 can be aligned.
- the first position of the opening 22 or the second position of the opening 22 may be.
- the opening 22 of the embodiment of the present application is formed on the elliptical spherical structure, when the opening 22 is in the shape of a slit, the angle of the opening can be maximized on the shielding shell 20, so that the radiation irradiation device ensures a good shielding effect. At the same time, it can have a larger opening angle, that is, a wider radiation area. Therefore, it can be arranged as close as possible to the detection object, reducing the space occupied by the entire inspection device.
- the opening 22 when the opening 22 is slit-shaped, and since the shield case 20 itself has a sufficient thickness, the opening 22 can also be used as a collimator of the radiation irradiating device for extracting the detected rays and shaping the detected rays. And the size constraint, so that the ray is collimated to a large fan-shaped area with the ray source 10 as the apex, which can involve the entire detection object, so that not only the radiation provided by the ray source 10 is not repeated, not leaking and no The dead angle can make the detection ray strictly aligned with the corresponding detector (not shown), improve the detection efficiency and the quality of the detected image, so that the object to be measured can be detected more accurately.
- the structure of the shielding case 20 is not limited thereto.
- the shielding case 20 in this embodiment adopts an elliptical spherical structure, and in other embodiments, it may also be a square body.
- a cylinder or other housing structure as long as its thickness can meet the shielding needs.
- the radiation source 10 may be a gamma ray source.
- the gamma ray source includes an isotope source, and specifically, may include: 60 Co, 137 Cs, 192 Ir, 75 Se, preferably 60 Co, which has high energy and can match the larger opening angle provided by the opening 22 to form a stronger
- the fan-shaped scanning surface performs more accurate scanning detection on the object to be measured.
- the source 10 is mounted in the chamber by a mounting portion such that the first chamber 21 inside the shield housing 20 is correspondingly disposed in accordance with the shape of the mounting portion of the source 10 of radiation.
- the first position and the second position are formed according to the mating state of the radiation source 10 and the opening 22 with each other.
- Control device 40 can then move source 10 relative to opening 22 between a first position and a second position.
- the mounting portion can be a mounting rod 50
- the mounting rod 50 can be moved within the shielding housing 20
- the radiation source 10 is fixedly disposed on the mounting rod 50
- the scale 30 is used to obtain position information of the mounting rod 50
- the control device 40 is used to control the movement of the mounting rod 50 according to the positional information of the mounting rod 50 such that the radiation source 10 is in the first position or the second position.
- the source 10 is fixedly disposed within the mounting bar 50.
- the mounting bar 50 includes a thin wall portion on the mounting bar 50 at a position opposite the source 10, ie, the mounting bar 50.
- the position at which the rays of the ray source 10 are emitted, the wall thickness of the thin portion is less than or equal to the thickness preset value.
- the thickness preset value may be set according to actual requirements, as long as the wall thickness of the mounting rod 50 is less than or equal to the thickness preset value, the radiation of the radiation source 10 can penetrate the mounting rod 50 to radiate. Just go out.
- the position of the mounting rod 50 other than the thin portion is made of a shielding material to prevent radiation from being emitted from other locations.
- the first chamber 21 further includes a mounting hole 24, the mounting rod 50 is located within the mounting hole 24, and is movable within the mounting hole 24; the shielding housing 20 further includes The second chamber 23 is disposed at the second end of the mounting rod 50.
- the mounting bar 50 can be enclosed in the shield housing 20 to prevent removal of the mounting bar from the mounting hole 24 at the second end of the mounting bar 50.
- the second chamber 23 is provided with a lock, and the second chamber 23 cannot be opened without unlocking to take out the mounting rod 50.
- the difficulty of removing the mounting bar 50 can be increased by the locks in the second chamber 23 and the second chamber 23, preventing the user from accidentally removing the mounting bar 50, causing a radiation leakage accident.
- the mounting hole 24 is disposed perpendicular to the opening 22, and the mounting rod 50 is reciprocally disposed in the mounting hole 24.
- the diameter of the mounting aperture 24 and the diameter of the mounting bar 50 are less than or equal to a predetermined difference.
- the preset difference can be set according to actual needs, so that the dose of radiation radiated from the end of the mounting hole 24 away from the second chamber 23 satisfies the shielding requirement.
- the radiation dose is limited. Can meet the shielding requirements.
- the second position is spaced from the end of the mounting aperture 24 away from the end of the second chamber 23 by a distance greater than or equal to the first predetermined distance.
- the first preset distance can be set according to actual requirements, so that the dose of radiation radiated from the end of the mounting hole 24 away from the second chamber 23 satisfies the shielding requirement.
- the distance of the opening 22 from the end of the mounting aperture 24 away from the second chamber 23 is greater than or equal to a second predetermined distance.
- the second preset distance can be set according to actual requirements, so that the dose of radiation radiated from the end of the mounting hole 24 away from the second chamber 23 satisfies the shielding requirement.
- the radiation illuminating device further includes a driving mechanism 60 including a stator 61 and a mover 62 reciprocable along the stator 61, the first of the mover 62 and the mounting rod 50
- the terminal is fixedly connected
- the scale 30 is used to acquire the position information of the mover 62
- the control device 40 is configured to control the movement of the mover 62 according to the position information of the mover 62 so that the radiation source 10 is located at the first position or the second position.
- the second end of the mounting rod 50 is reciprocable within the mounting hole 24 and the second chamber 23.
- the driving mechanism 60 adopts a linear motor, and the mover 62 of the linear motor is connected to the mounting rod 50, or is indirectly coupled with the mounting rod 50 through a connecting rod.
- the connection between the mover 62 and the mounting rod 50 is used in the present application.
- the method is not limited, as long as the detachable fixed connection between the two can be realized, the control device 40 can control the movement of the mover 62 to drive the mounting rod 50 to linearly reciprocate in the axial direction of the mounting hole 24, that is,
- the radiation source 10 can be moved and the radiation source 10 can be switched between the first position and the second position.
- the control device 40 can quickly control the movement of the radiation source 10 to the first position or the second position. According to the position information acquired by the scale 30, the accuracy of the control can be ensured while ensuring that the radiation source 10 is quickly controlled to move to the first position or the second position.
- the cross-section of the mounting bar 50 can also be square, rectangular or other shape that can be linearly reciprocated as long as it cooperates with the mounting aperture 24.
- the radiation illuminating device further includes a support 70.
- the support 70 includes a base 71 and two side walls 72.
- the two side walls 72 are located at two sides of the base 71 along the axial direction of the mounting rod 50.
- the stator 61 is fixedly disposed between the two side walls 72.
- the base 71 is provided with a guide rail 73, and the mover 62 is reciprocable along the guide rail 73 to reciprocate the mover 62 along the stator 61.
- the guide rails 73 carry the mover 62 for reciprocation to avoid damage to the components caused by the reciprocating movement of the mover 62 by the stator 61 due to insufficient strength of the stator 61.
- the guide rail 73 further includes a slider 74, a mover 62 and a slider that can reciprocate along the guide rail 73. 74 connections.
- the scale 30 is disposed at the bottom of the guide rail 73, and the measuring direction of the scale 30 coincides with the reciprocating direction of the mover 62.
- the slider 74 is provided with a pointer 75, and the tip of the pointer 75 is pointed.
- the scale 30 is adjacent to the side of the slider 74 for indicating the scale displayed on the scale 30.
- the tip end of the pointer 75 is directed toward the scale 30 so that the positional information of the slider 74, i.e., the positional information of the mover 62 attached to the slider 74, can be read from the scale 30.
- the scale 30 can also be disposed at other positions as long as the scale 30 can acquire the position information of the mover 62.
- the radiation illuminating device further includes a reset device 80 fixedly coupled to the mover 62.
- the reset device 80 is repositioned to move the mover 62 such that the source 10 is in the first or second position.
- the reset device 80 can be an uninterruptible power supply (English name: Uninterruptible Power System/Uninterruptible Power Supply, UPS), a super capacitor or a compression spring.
- the resetting device 80 is a compression spring.
- the first end of the compression spring is coupled to the mover 62.
- the compression spring is elastically deformed to move the mover 62 to position the radiation source 10 in the first position or the second position.
- the mover 62 when the mover 62 is moved from a first position corresponding to the source 10 to a second position corresponding to the source 10, the mover 62 does the motion of compressing the compression spring.
- the compression spring is in a naturally elongated state, and when the mover 62 is at a position corresponding to the first position of the radiation source 10, the compression spring is at Compressed state.
- the mover 62 when the radiation source 10 emits radiation radiation and a sudden power failure occurs, the mover 62 is moved to a position corresponding to the second position of the radiation source 10 by the elastic force of the compression spring, thereby The radiation cannot be radiated from the opening 22.
- the radiation illuminating device further includes a bracket 81 fixedly disposed at one end on the shield case 20, and the compression spring is sleeved on the bracket 81, and the first end of the compression spring passes through the connecting ring 82 and the mover 62.
- the fixed connection, the connecting ring 82 is sleeved on the bracket 81, and the second end of the compression spring is fixedly disposed on the shielding shell 20.
- one end of the bracket 81 can also be fixed at other positions of the radiation irradiating apparatus of this embodiment.
- the second end of the compression spring can also be attached to other locations of the radiation irradiation apparatus of the present embodiment.
- the mover 62 when the mover 62 is moved by the elastic force of the compression spring, the mover 62 can be moved along the bracket 81 due to the restriction of the bracket 81 and the connecting ring 82. Further optionally, the bracket 81 is disposed in parallel with the stator 61, and the mover 62 reciprocates along the bracket 81 to reciprocate the mover 62 along the stator 61.
- the travel of the mover 62 is greater than or equal to the distance between the first position and the second position. In these alternative embodiments, the travel of the mover 62 ensures that the mover 62 causes the source 10 to move to the first or second position.
- the radiation irradiation device further includes a first limit sensor 91 and/or a second limit sensor 92, and the first limit sensor 91 is configured to determine whether the radiation source 10 is in the first position, The second position sensor 92 is configured to determine whether the radiation source 10 is in the second position.
- the control device 40 is further configured to determine whether to control the radiation source 10 to stop moving according to the determination result of the first limit sensor 91 and/or the second limit sensor 92. .
- control device 40 when the control device 40 is used to control the radiation of the radiation to the outside, and the first limit sensor 91 determines that the radiation source 10 is in the first position, the control device 40 controls the radiation source 10 to stop moving;
- the device 40 is for controlling the radiation to be unable to radiate outward, and the second limit sensor 92 determines that the radiation source 10 is in the second position, and the control device 40 controls the radiation source 10 to stop moving.
- the control device 40 is further configured to determine, according to the position information acquired by the scale 30, a corresponding position of the first position and the second position of the radiation source 10 on the scale 30, and the first limit sensor 91 is disposed on the scale 30.
- the second limit sensor 92 At a position of the first position of the ray source 10, the second limit sensor 92 is disposed on the scale 30 at a position corresponding to the second position of the ray source 10.
- a second embodiment of the present application provides a security detecting apparatus, including the radiation irradiating apparatus of any of the above embodiments.
- the safety detecting device for example, detecting the vehicle
- the above-described radiation irradiating device is installed, and the radiation irradiating device can be installed on the bottom surface, the top surface or the side surface of the detecting passage of the safety detecting device.
- the radiation irradiation device is mounted on the bottom surface of the detection channel. Since the radiation irradiation device in the embodiment of the present application has a large radiation opening angle, during the detection process, it is mounted on the bottom surface of the detection channel between the vehicle and the detection vehicle. Maintaining a close distance while having a wide radiation area facilitates a clearer detection image.
- the safety detecting device further includes a sensor for detecting a vehicle to be detected in the detecting channel, and the sensor detects that the moving target enters the detecting channel of the safety detecting device and the cab passes the radiation detecting device, and then the information Transmitted to the control device 40, the control device 40 controls the radiation source 10 to move to the opening 22 of the shielding housing 20, and cooperates with the detector provided in the detection channel to perform scanning detection on the vehicle to be detected.
- the radiation source can be made as needed. 10 continuously scans the detection vehicle at the opening 22 or periodically scans the detection source by the drive mechanism 60.
- the safety detecting device in this embodiment is equipped with the above-mentioned radiation irradiation device, and can control the quick opening or closing of the shutter of the radiation irradiation device according to the entry condition of the vehicle to be detected, thereby facilitating the convenient and reasonable control of the radiation irradiation device. To improve the detection efficiency, ensure the accuracy of the test results, and avoid the impact of the radiation irradiation device itself.
Landscapes
- Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Measurement Of Radiation (AREA)
Abstract
一种射线照射装置，包括：射线源（10），用于提供射线；屏蔽壳体（20），具有用于容纳射线源（10）的第一腔室（21）以及与第一腔室连通的开口（22），使得射线能够通过开口（22）向外辐射；栅尺（30），用于获取射线源（10）的位置信息；控制装置（40），用于根据射线源（10）的位置信息控制射线源（10）移动至第一位置或第二位置；其中，第一位置为射线通过开口（22）向外辐射的位置；第二位置为射线不能通过开口（22）向外辐射的位置。该装置可以实现较高频率的射线的射出，同时还可以减少由于射线射出对屏蔽壳体（20）产生的冲击力，且使得减少射线剂量的同时降低辐射防护难度。还提供一种包括该射线照射装置的安全检测设备。
Description
相关申请的交叉引用
本申请要求享有于2017年08月25日提交的名称为“射线照射装置以及安全检测设备”的中国专利申请201710743694.1的优先权，该申请的全部内容通过引用并入本文中。
本申请涉及核技术应用领域，尤其涉及一种射线照射装置以及安全检测设备。
目前，在车站、地铁、机场、海关、港口、核电站、政府机关、邮检中心、法院、会议场所等已广泛应用放射性安全检测设备，通过射线穿过待测物体，由另一边设置的探测器进行信号采集，得到射线穿透不同物质后衰减所得的强度，以分辨所检测物体的密度，得到不同的灰度图像，而对物体或者车辆进行安全查验。
已知一种针对大型货车、集装箱的双投影辐射成像检测技术，其中通过设置同位素为辐射源。辐射源通常被安置在厚重的屏蔽室中，在屏蔽室上开设发射射线的发射孔，具有屏蔽功能的快门能够通过往复移动使所述发射孔被遮挡或者露出，从而使射线能够以一定的频率从发射孔进行射出，对待检测物体进行检测。但是由于这种快门结构过重，使得快门的开启、关闭速度缓慢，并且冲击力大，开启时间长，定位不精确，导致检测所需射线剂量大，快门尺寸大。
因此，需要一种快门启闭速度快、冲击小的射线照射装置以及安全检测设备。
申请内容
本申请提供一种射线照射装置及安全检测设备，旨在提供一种快门启闭速度快、冲击小、射线源定位更加精准的射线照射装置以及安全检测设备。
根据本申请的一个方面提供了一种射线照射装置，包括：射线源，用于提供射线；屏蔽壳体，具有用于容纳射线源的腔室以及与腔室连通的开口，使得射线能够通过开口向外辐射；栅尺，用于获取射线源的位置信息；控制装置，用于根据射线源的位置信息控制射线源移动至第一位置或第二位置；其中，第一位置为射线通过开口向外辐射的位置；第二位置为射线不能通过开口向外辐射的位置。
根据本申请另一个方面提供一种安全检测设备，包括上述射线照射装置。
本申请实施例提供的射线照射装置的屏蔽壳体上具有开口，本申请实施例的装置不是通过快门的开启和关闭实现射线的辐射，而是控制装置控制射线源位于第一位置使得射线通过开口向外辐射，或第二位置使得射线不能通过开口向外辐射，由于射线源的重量远小于快门的重量，从而可以实现较高频率的射线的射出，同时还可以减小由于射线射出对屏蔽壳体产生的冲击力，且通过栅尺能够准确获取射线源的位置信息，控制装置根据射线源的位置信息控制射线源移动，能够更加精确地控制射线源位于第一位置或第二位置，由于射线源位置精确，因此可以减小开口尺寸，使得减小射线剂量的同时降低辐射防护难度。
下面将参考附图来描述本申请示例性实施例的特征、优点和技术效果。
图1是示出根据本申请实施例的射线照射装置的结构示意图。
附图标记说明：10、射线源；20、屏蔽壳体；21、第一腔室；22、开口；23、第二腔室；24、安装孔；30、栅尺；40、控制装置；50、安装杆；60、驱动机构；61、定子；62、动子；70、支座；71、底座；72、侧壁；73、导轨；74、滑块；75、指针；80、复位装置；81、支架；82、连接环； 91、第一限位传感器；92、第二限位传感器。
下面将详细描述本申请的各个方面的特征和示例性实施例。在下面的详细描述中，对许多具体细节进行了阐释和说明，以便提供对本申请的全面理解。但是，对于本领域技术人员来说很明显的是，本申请可以在不需要这些具体细节中的一些细节的情况下实施。下面对实施例的描述仅仅是为了通过描述本申请的示例来提供对本申请的更好的理解。本申请不限于下面所提出的任何具体配置，而是在不脱离本申请精神的前提下覆盖了对本申请的结构和部件做出的任何修改、替换和改进。在附图和下面的描述中，没有示出公知的结构和技术，以避免对理解本申请的技术方案造成不必要的困扰。
图1是本申请实施例提供的射线照射装置的结构示意图，射线照射装置可安装于多种类型的安全检测设备(图未示)的检测通道中，用于根据需要向待检测物体(示例性地，例如车辆或者集装箱)发射检测射线，配合检测通道中布置的探测器以及其他单元对检测物体进行检测。
请参见图1，射线照射装置包括射线源10，用于提供射线；屏蔽壳体20，具有用于容纳射线源10的第一腔室21以及与第一腔室21连通的开口22，使得射线能够通过开口22向外辐射；栅尺30，用于获取射线源10的位置信息；控制装置40，用于根据射线源10的位置信息控制射线源10移动至第一位置或第二位置；其中，第一位置为射线通过开口22向外辐射的位置；第二位置为射线不能通过开口22向外辐射的位置。
本申请实施例提供的射线照射装置的屏蔽壳体20上具有开口22，本申请实施例的装置不是通过快门的开启和关闭实现射线的辐射，而是控制装置40控制射线源10位于第一位置使得射线通过开口22向外辐射，或第二位置使得射线不能通过开口向外辐射，由于射线源10的重量远小于快门的重量，从而可以实现较高频率的射线的射出，同时还可以减小由于射线射出对屏蔽壳体20产生的冲击力，且通过栅尺30能够准确获取射线源10的位置信息，控制装置40根据射线源10的位置信息控制射线源10移 动，能够更加精确地控制射线源10位于第一位置或第二位置，由于射线源10位置精确，因此可以减小开口22尺寸，使得减小射线剂量的同时降低辐射防护难度。
一些可选的实施例中，屏蔽壳体20采用具有屏蔽性能的材料制成，其具有较好的屏蔽效果和较高的强度。例如：可以通过铅、钨、铅合金或钨合金、铀238等高密度金属或者合金制成。屏蔽壳体20主体呈椭圆形球体结构，可安装于检测通道的射线照射装置安装座上，内部具有用于容纳射线源10的第一腔室21，并且屏蔽壳体20上设置的开口22根据实际照射需要可以选择开设为圆形孔或者呈狭缝状开口。示例性地，如图1所示，可以在屏蔽壳体20主体上直接开设开口22，当然开口22的位置可以根据腔室中射线源10的位置确定，只要能够满足射线源10具有可对准开口22的第一位置或者偏离开口22的第二位置即可。
由于本申请实施例的开口22开设于椭圆形球体结构上，当开口22为狭缝状时，其在屏蔽壳体20上可最大化地选择开设角度，使得射线照射装置在保证良好的屏蔽效果的同时可具有较大的张角，即呈现较宽的辐射面积。因此可以布置得尽可能靠近检测物体，减小整个检测设备所占的空间。在一些实施例中，当开口22为狭缝状，又因屏蔽壳体20本身具有足够厚度，还可以使用开口22作为射线照射装置的准直器，用于引出检测射线并对检测射线进行形状和大小的约束，使射线被准直成以射线源10为顶点的、能够涉及到整个检测物体的较大的扇形面积，这样不仅能够保证射线源10提供的射线不重复、不漏空并且无死角，又能使检测射线与对应的探测器(图未示)严格对准，提高检测效率以及呈现的检测图像质量，从而能够更准确地对待测物体进行检测。
当然，上述屏蔽壳体20的结构并不限于此，为保证其厚度均匀分布并便于安装，本实施例中的屏蔽壳体20采用椭圆球体形结构，在其它实施例中其还可以为正方体、圆柱体或者其它壳体结构，只要其厚度能够满足屏蔽需要即可。
本申请实施例对射线源10的类型不做限制，例如射线源10可以为γ射线源。γ射线源包括同位素放射源，具体地，可以包括：
60Co、
137Cs、
192Ir、
75Se，优选采用
60Co，其能量高，可配合开口22提供的较大张角以形成较强的扇形扫描面，对待测物体进行更为精准的扫描检测。
在一些可选的实施例中，射线源10通过安装部安装于腔室中，因此上述屏蔽壳体20内部的第一腔室21根据射线源10安装部的形状被相应地设置。根据射线源10和开口22彼此的配合状态形成第一位置和第二位置。控制装置40则可以使射线源10相对于开口22在第一位置和第二位置之间进行移动。
可以理解的是，安装部可以为安装杆50，安装杆50可在屏蔽壳体20内移动，射线源10固定设置于安装杆50，栅尺30用于获取安装杆50的位置信息，控制装置40用于根据安装杆50的位置信息控制安装杆50移动，以使射线源10位于第一位置或第二位置。
在另一些可选的实施例中，射线源10固定设置于安装杆50内，安装杆50包括薄壁部，薄壁部位于安装杆50上与射线源10相对的位置，即安装杆50上射线源10的射线射出的位置，薄壁部的壁厚小于或等于厚度预设值。在这些可选的实施例中，厚度预设值可以根据实际需求进行设定，只要当安装杆50的壁厚小于或等于厚度预设值时，射线源10的射线能够穿透安装杆50辐射出即可。安装杆50上除薄壁部外的其他位置采用屏蔽材料制成，防止射线从其他位置射出。
可以理解的是，在另一些可选的实施例中，第一腔室21还包括安装孔24，安装杆50位于安装孔24内，且可在安装孔24内移动；屏蔽壳体20还包括设置于安装杆50第二端的第二腔室23。在这些可选的实施例中，通过设置第二腔室23，可以将安装杆50封闭在屏蔽壳体20中，防止从安装杆50第二端处的安装孔24内取出安装杆。进一步的，第二腔室23设置有锁具，在不开锁的情况下不能够将第二腔室23打开，以取出安装杆50。在这些可选的实施例中，通过第二腔室23以及第二腔室23内的锁具能够增加取出安装杆50的难度，防止用户不小心将安装杆50取出，造成射线泄露事故。具体的，为保证射线源10在直线往复运动中的平稳性以及安全性，安装孔24垂直于开口22设置，安装杆50可往复移动地设置于安装孔24内。
在一些可选的实施例中，安装孔24的直径与安装杆50的直径差小于或等于预设差值。在这些可选的实施例中，预设差值可以根据实际需求进行设定，故使得从安装孔24远离第二腔室23的一端辐射出的射线剂量满足屏蔽要求即可。在这些可选的实施例中，由于射线是按照一定的方向辐射，因此当安装孔24的直径较小，即安装孔24和安装杆50之间的间隙较小时，辐射出的射线剂量有限，能够满足屏蔽要求。
在另一些可选的实施例中，第二位置与安装孔24远离第二腔室23一端的距离大于或等于第一预设距离。其中第一预设距离可以根据实际需求进行设定，故使得从安装孔24远离第二腔室23的一端辐射出的射线剂量满足屏蔽要求即可。
在另一些可选的实施例中，开口22与安装孔24远离第二腔室23一端的距离大于或等于第二预设距离。其中第二预设距离可以根据实际需求进行设定，故使得从安装孔24远离第二腔室23的一端辐射出的射线剂量满足屏蔽要求即可。
在另一些可选的实施例中，进一步的，射线照射装置还包括驱动机构60，驱动机构60包括定子61和可沿定子61往复运动的动子62，动子62与安装杆50的第一端固定连接，栅尺30用于获取动子62的位置信息，控制装置40用于根据动子62的位置信息控制动子62移动，以使射线源10位于第一位置或第二位置。其中，安装杆50的第二端可在安装孔24和第二腔室23内往复运动。具体的，驱动机构60采用直线电机，直线电机的动子62与安装杆50连接传动，或者通过连接杆与安装杆50间接配合传动，当然本申请对动子62与安装杆50之间的连接方式不做限制，只要能够实现彼此之间可拆卸的固定连接即可，控制装置40可以控制动子62移动，从而带动安装杆50在安装孔24中沿其轴向方向进行直线往复运动，即可实现射线源10移动，并令射线源10在第一位置和第二位置之间切换，利用直线电机的高度特性，控制装置40可以快速控制射线源10移动至第一位置或第二位置，根据栅尺30获取的位置信息，在保证快速控制射线源10移动至第一位置或第二位置的同时，还能够保证控制的精确性。
在一些可选的实施例中，安装杆50横截面还可以为正方形、长方形 或者其他形状，其只要与安装孔24配合可以实现直线往复运动即可。
在一些可选的实施例中，进一步的，射线照射装置还包括支座70，支座70包括底座71和两个侧壁72，两个侧壁72位于底座71沿安装杆50轴向的两侧，定子61固定设置在两个侧壁72之间。
底座71上设置有导轨73，动子62可沿导轨73做往复运动，以使动子62沿定子61做往复运动。在这些可选的实施例中，导轨73承载动子62做往复运动，避免由于定子61强度不足，动子62由定子61承载往复运动时造成的零部件损坏。
其中，动子62和导轨73之间的连接实施方式有多种，作为一种可选的实施方式，导轨73还包括可沿所述导轨73往复运动的滑块74，动子62和滑块74连接。
在另一些可选的实施例中，栅尺30设置于导轨73底部，且栅尺30的测量方向与动子62的往复运动方向一致，滑块74上设置有指针75，指针75的顶端指向栅尺30上靠近滑块74的侧边，用于指示栅尺30上显示的刻度。在这些可选的实施例中，指针75的顶端指向栅尺30，因此能够从栅尺30上读出滑块74的位置信息，即连接于滑块74上的动子62的位置信息。当然，栅尺30还可以设置于其他位置，只要栅尺30能够获取动子62的位置信息即可。
在另一些可选的实施例中，射线照射装置还包括与动子62固定连接的复位装置80，复位装置80复位变形以使动子62移动，令射线源10位于第一位置或第二位置。可选的，复位装置80可以为不间断电源(英文全称：Uninterruptible Power System/Uninterruptible Power Supply，英文简称：UPS)、超级电容或压缩弹簧。
具体的，复位装置80为压缩弹簧，压缩弹簧的第一端与动子62连接，压缩弹簧的弹性变形以使动子62移动，令射线源10位于第一位置或第二位置。在一些可选的实施例中，当动子62从对应于射线源10的第一位置移动至对应于射线源10的第二位置时，动子62做压缩该压缩弹簧的运动。具体的，当动子62位于对应于射线源10的第二位置的位置时，压缩弹簧处于自然伸长状态，当动子62位于对应于射线源10的第一位置的位置时， 压缩弹簧处于被压缩状态。在这些可选的实施例中，当射线源10发出射线辐射而突然发生断电事故时，在压缩弹簧的弹力作用下，令动子62移动至对应于射线源10第二位置的位置，从而令射线不能够从开口22辐射出。
在一些可选的实施例中，射线照射装置还包括一端固定设置在屏蔽壳体20上的支架81，压缩弹簧套设在支架81上，压缩弹簧的第一端通过连接环82和动子62固定连接，连接环82套设在支架81上，压缩弹簧的第二端固定设置在屏蔽壳体20上。当然，支架81的一端还可以固定在本实施例射线照射装置的其他位置。同样的，压缩弹簧的第二端也可以固定在本实施例射线照射装置的其他位置。在这些可选的实施例中，当动子62在压缩弹簧的弹力作用下移动时，由于支架81和连接环82的限位作用，可以保证动子62沿支架81移动。进一步可选的，支架81与定子61平行设置，动子62沿支架81往复运动，以使动子62沿定子61往复运动。
在另一些可选的实施例中，动子62的移动行程大于或等于第一位置和第二位置之间的距离。在这些可选的实施例中，动子62的移动行程能够确保动子62带动射线源10移动至第一位置或第二位置。
在另一些可选的实施例中，射线照射装置还包括第一限位传感器91和/或第二限位传感器92，第一限位传感器91用于确定射线源10是否位于第一位置，第二限位传感器92用于确定射线源10是否位于第二位置；控制装置40还用于根据第一限位传感器91和/或第二限位传感器92的判断结果确定是否控制射线源10停止移动。在这些可选的实施例中，当控制装置40用于控制射线向外辐射，且第一限位传感器91确定射线源10位于第一位置时，控制装置40控制射线源10停止移动；当控制装置40用于控制射线不能够向外辐射，且第二限位传感器92确定射线源10位于第二位置时，控制装置40控制射线源10停止移动。其中，控制装置40还用于根据栅尺30获取的位置信息确定射线源10的第一位置和第二位置在栅尺30上对应的位置，第一限位传感器91设置于栅尺30上对应于射线源10第一位置的位置，第二限位传感器92设置于栅尺30上对应于射线源10第二位置的位置。
本申请第二实施例提供一种安全检测设备，包括上述任一实施例中的射线照射装置。根据本申请实施例提供的安全检测设备(以对车辆检测为例)，其安装有上述的射线照射装置，并且该射线照射装置可安装于安全检测设备的检测通道的底面、顶面或者侧面。优选为将射线照射装置安装于检测通道的底面，由于本申请实施例中的射线照射装置具有较大的辐射张角，在检测过程中，安装于检测通道的底面上，在与检测车辆之间保持较近距离同时具有较宽的辐射面积，有利于呈现更为清晰的检测图像。
根剧本申请的一个实施例，上述安全检测设备还包括对检测通道中的待检测车辆进行检测的传感器，传感器检测到移动目标进入安全检测设备的检测通道并且驾驶室越过射线照射装置后，将信息传送于控制装置40，控制装置40即控制射线源10移动至屏蔽壳体20的开口22处，与设于检测通道中的探测器配合对待检测车辆进行扫描检测，当然，根据需要可使射线源10持续处于开口22处对检测车辆进行扫描或者通过驱动机构60带动射线源10周期性地运动对检测车辆进行扫描。当传感器检测到对检测车辆完成检测后，再次将信息传送于控制装置40，控制装置40即控制射线源10移动至第二位置，车辆即可驶出检测通道。本实施例中的安全检测设备由于安装有上述的射线照射装置，并可根据待检测车辆的进入情况控制射线照射装置的快门的快速开启或者关闭，从而对射线照射装置进行方便快捷并且合理的控制，提高检测效率的同时，保证检测结果的准确性，并避免射线照射装置本身受到冲击。
Claims (15)
- 一种射线照射装置，包括：射线源，用于提供射线；屏蔽壳体，具有用于容纳所述射线源的第一腔室以及与所述第一腔室连通的开口，使得所述射线能够通过所述开口向外辐射；栅尺，用于获取所述射线源的位置信息；控制装置，用于根据所述射线源的位置信息控制所述射线源移动至第一位置或第二位置；其中，所述第一位置为所述射线通过所述开口向外辐射的位置；所述第二位置为所述射线不能通过所述开口向外辐射的位置。
- 如权利要求1所述的射线照射装置，其中，还包括安装杆，所述安装杆可在所述屏蔽壳体内移动，所述射线源固定设置于所述安装杆，所述栅尺用于获取所述安装杆的位置信息，所述控制装置用于根据所述安装杆的位置信息控制所述安装杆移动，以使所述射线源位于所述第一位置或所述第二位置。
- 如权利要求2所述的射线照射装置，其中，所述第一腔室还包括安装孔，所述安装杆位于所述安装孔内，且可在所述安装孔内移动；所述屏蔽壳体还包括设置于所述安装杆第二端的第二腔室。
- 如权利要求3所述的射线照射装置，其中，所述安装孔的直径与所述安装杆的直径差小于或等于预设差值。
- 如权利要求3所述的射线照射装置，其中，进一步的，还包括驱动机构，所述驱动机构包括定子和可沿所述定子往复运动的动子，所述动子与所述安装杆的第一端固定连接，所述栅尺用于获取所述动子的位置信息，所述控制装置用于根据所述动子的位置信息控制所述动子移动，以使所述射线源位于所述第一位置或所述第二位置。
- 如权利要求5所述的射线照射装置，其中，进一步的，还包括支座，所述支座包括底座和两个侧壁，所述两个侧壁位于所述底座沿所述安装杆轴向的两侧，所述定子固定设置在两个所述侧壁之间。
- 如权利要求6所述的射线照射装置，其中，所述底座上设置有导轨，所述动子可沿所述导轨做往复运动，以使所述动子沿所述定子做往复运动。
- 如权利要求7所述的射线照射装置，其中，所述导轨还包括可沿所述导轨往复运动的滑块，所述动子与所述滑块连接。
- 如权利要求8所述的装置，其中，所述栅尺设置于所述导轨底部，且所述栅尺的测量方向与所述动子的往复运动方向一致，所述滑块上设置有指针，所述指针的顶端指向所述栅尺上靠近所述滑块的侧边，用于指示所述栅尺上显示的刻度。
- 如权利要求5所述的射线照射装置，其中，还包括与所述动子固定连接的复位装置，所述复位装置复位变形以使所述动子移动，令所述射线源位于所述第一位置或所述第二位置。
- 如权利要求10所述的装置，其中，所述复位装置为压缩弹簧，所述压缩弹簧的第一端与所述动子连接，所述压缩弹簧的弹性变形以使所述动子移动，令所述射线源位于所述第一位置或所述第二位置。
- 如权利要求11所述的装置，其中，进一步的，还包括一端固定设置在所述屏蔽壳体上的支架，所述压缩弹簧套设在所述支架上，所述压缩弹簧的第一端通过连接环和所述动子固定连接，所述连接环套设在所述支架上，所述压缩弹簧的第二端固定设置在所述屏蔽壳体上。
- 如权利要求5所述的射线照射装置，其中，所述动子的移动行程大于或等于所述第一位置与所述第二位置之间的距离。
- 如权利要求1所述的射线照射装置，其中，进一步包括第一限位传感器和/或第二限位传感器，所述第一限位传感器用于确定所述射线源是否位于所述第一位置，所述第二限位传感器用于确定所述射线源是否位于所述第二位置；所述控制装置还用于根据所述第一限位传感器和/或第二限位传感器的判断结果确定是否控制所述射线源停止移动。
- 一种安全检测设备，包括：如权利要求1-14中任意一项所述的射线照射装置。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710743694.1A CN107515427B (zh) | 2017-08-25 | 2017-08-25 | 射线照射装置以及安全检测设备 |
| CN201710743694.1 | 2017-08-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2019037488A1 true WO2019037488A1 (zh) | 2019-02-28 |
Family
ID=60724320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2018/087676 Ceased WO2019037488A1 (zh) | 2017-08-25 | 2018-05-21 | 射线照射装置以及安全检测设备 |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107515427B (zh) |
| WO (1) | WO2019037488A1 (zh) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110092148A (zh) * | 2019-05-09 | 2019-08-06 | 同方威视技术股份有限公司 | 样品运输检测装置及系统 |
| CN111999761A (zh) * | 2020-09-29 | 2020-11-27 | 新疆维吾尔自治区计量测试研究院 | γ谱仪屏蔽装置 |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107515427B (zh) * | 2017-08-25 | 2025-03-25 | 清华大学 | 射线照射装置以及安全检测设备 |
| CN110459338A (zh) * | 2018-05-08 | 2019-11-15 | 清华大学 | 屏蔽室、射线源装置及车辆安全检测系统 |
| CN109480877A (zh) * | 2018-12-06 | 2019-03-19 | 上海联影医疗科技有限公司 | X射线成像设备 |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003034052A1 (en) * | 2001-10-11 | 2003-04-24 | The Secretary Of State For Defence | Gamma ray imaging apparatus |
| CN1584564A (zh) * | 2003-08-23 | 2005-02-23 | 上海世鹏实验室科技发展有限公司 | 一种新型射源装置 |
| CN2798086Y (zh) * | 2005-05-25 | 2006-07-19 | 华南理工大学 | 可自适应调整x射线源的检测装置 |
| CN104048600A (zh) * | 2014-06-12 | 2014-09-17 | 天津大学 | 基于光耦探测器x射线三维显微镜重建体素尺寸标定方法 |
| CN105891898A (zh) * | 2016-05-30 | 2016-08-24 | 清华大学 | 射线照射装置以及安全检测设备 |
| CN205809324U (zh) * | 2016-05-30 | 2016-12-14 | 清华大学 | 射线照射装置以及安全检测设备 |
| CN107515427A (zh) * | 2017-08-25 | 2017-12-26 | 清华大学 | 射线照射装置以及安全检测设备 |
| CN207601337U (zh) * | 2017-08-25 | 2018-07-10 | 清华大学 | 射线照射装置以及安全检测设备 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204761853U (zh) * | 2015-06-17 | 2015-11-11 | 深圳市朤科自动化设备有限公司 | 一种贴片机贴片模组的平板式驱动机构 |
| CN205766156U (zh) * | 2016-05-26 | 2016-12-07 | 沈阳众拓机器人设备有限公司 | 直线电机定位系统 |
| CN206353749U (zh) * | 2016-12-22 | 2017-07-25 | 广东德康威尔科技有限公司 | 一种自带磁栅尺和读数头的直线电机及电机模组 |
-
2017
- 2017-08-25 CN CN201710743694.1A patent/CN107515427B/zh active Active
-
2018
- 2018-05-21 WO PCT/CN2018/087676 patent/WO2019037488A1/zh not_active Ceased
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003034052A1 (en) * | 2001-10-11 | 2003-04-24 | The Secretary Of State For Defence | Gamma ray imaging apparatus |
| CN1584564A (zh) * | 2003-08-23 | 2005-02-23 | 上海世鹏实验室科技发展有限公司 | 一种新型射源装置 |
| CN2798086Y (zh) * | 2005-05-25 | 2006-07-19 | 华南理工大学 | 可自适应调整x射线源的检测装置 |
| CN104048600A (zh) * | 2014-06-12 | 2014-09-17 | 天津大学 | 基于光耦探测器x射线三维显微镜重建体素尺寸标定方法 |
| CN105891898A (zh) * | 2016-05-30 | 2016-08-24 | 清华大学 | 射线照射装置以及安全检测设备 |
| CN205809324U (zh) * | 2016-05-30 | 2016-12-14 | 清华大学 | 射线照射装置以及安全检测设备 |
| CN107515427A (zh) * | 2017-08-25 | 2017-12-26 | 清华大学 | 射线照射装置以及安全检测设备 |
| CN207601337U (zh) * | 2017-08-25 | 2018-07-10 | 清华大学 | 射线照射装置以及安全检测设备 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110092148A (zh) * | 2019-05-09 | 2019-08-06 | 同方威视技术股份有限公司 | 样品运输检测装置及系统 |
| CN111999761A (zh) * | 2020-09-29 | 2020-11-27 | 新疆维吾尔自治区计量测试研究院 | γ谱仪屏蔽装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107515427A (zh) | 2017-12-26 |
| CN107515427B (zh) | 2025-03-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2019037488A1 (zh) | 射线照射装置以及安全检测设备 | |
| RU2305829C1 (ru) | Способ и устройство для распознавания материалов с помощью быстрых нейтронов и непрерывного спектрального рентгеновского излучения | |
| KR102101051B1 (ko) | 뮤온 단층촬영 검사에서의 1차 및 2차 스캐닝 | |
| CA2589047C (en) | Adaptive scanning of materials using nuclear resonance fluorescence imaging | |
| US7386093B2 (en) | Method and an apparatus for liquid safety-detection with a radiation source | |
| CN106053497B (zh) | 安全检测系统 | |
| US7653176B2 (en) | Inspection system with material identification | |
| KR101824812B1 (ko) | 방사선 조사 장치 및 안전 검사 기기 | |
| CN204166147U (zh) | 提升应用值指标的x射线辐射成像安检系统 | |
| US11152190B2 (en) | Charged particle scanners | |
| RU2006145560A (ru) | Устройство и способ для быстрого формирования изображений и контроля подвижного объекта | |
| CN108318512A (zh) | 用于人体的透射-背散射组合检测设备和检测方法 | |
| US12360265B2 (en) | Charged particle scanners | |
| KR102284602B1 (ko) | 중성자선과 엑스선을 이용하는 보안 검색 장치 | |
| CN101571496A (zh) | 用于辐射成像系统的紧凑型校正与准直装置 | |
| CN207601337U (zh) | 射线照射装置以及安全检测设备 | |
| CN205809324U (zh) | 射线照射装置以及安全检测设备 | |
| US20070030955A1 (en) | Scatter imaging system | |
| JP2019033082A (ja) | Ｘ線円管及び該ｘ線円管を含むｘ線機器 | |
| CN108459354A (zh) | 透视扫描设备 | |
| CN208188367U (zh) | 透视扫描设备 | |
| CN209446498U (zh) | 一种x射线荧光光谱仪 | |
| EP3066987A1 (en) | Biopsy needle guidance device for stereotactic biopsies, imaging device comprising same and biopsy collection method using same | |
| CN2638060Y (zh) | 一种用于车载式集装箱检测系统的γ射线辐射源装置 | |
| CN104297808A (zh) | 一种快速反散射立体飞点扫描仪 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 18848707 Country of ref document: EP Kind code of ref document: A1 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 18848707 Country of ref document: EP Kind code of ref document: A1 |