摘要:
Disclosed is an inspection system for inspecting a cargo by using radiation, comprising: a main plate conveyor; a radiation scanning unit that spans said main plate conveyor and is provided above said main plate conveyor, for scanning the cargo provided on the main plate conveyor; auxiliary conveyors that are provided at the front end and rear end of said main plate conveyor, respectively, so as to load the cargo to be inspected onto said main plate conveyor and to unload the inspected cargo from said main plate conveyor; and lifting devices for lifting said auxiliary conveyors. The inspection system according to the present invention occupies less area, has simple corollary equipments, a lower operating cost, and excellent compatibility, and can be widely applied.
摘要:
The present invention discloses a scanning device of back-scatter imaging with a radiation beam, comprising: a radiation source; a fixed shield plate and a rotatable shield body disposed between the radiation source and a object to be scanned respectively, wherein the fixed shield plate is stationary with respect to the radiation source and the rotatable shield body is rotatable with respect to the fixed shield plate. The fixed shield plate is provided with a ray passing-through region thereon, which allows for a radiation beam from the radiation source to pass through the fixed shield plate, a ray incidence region and a ray emergence region are arranged on the rotatable shield body respectively, during the rotatable scanning of the rotatable shield body, the ray passing-through region of the fixed shield plate continuously intersects with the ray incidence region and the ray emergence region of the rotatable shield body to generate collimated holes for scanning. The ray passing-through region of the fixed shield plate is a rectilinear slit, the rotatable shield body is a cylinder, and the ray incidence and emergence regions are configured to be a series of small discrete holes disposed along a spiral line respectively. In addition, the present invention discloses a scanning method for back-scatter imaging with a radiation beam.
摘要:
The present invention discloses a millimeter-wave inspection apparatus. The millimeter-wave inspection apparatus comprises: optics devices, configured to receive millimeter-wave energy radiated from an object to be inspected and focus the received millimeter-wave energy; a radiometer receiving device configured to receive the focused millimeter-wave energy and transform the millimeter-wave energy into electrical signal; and an imaging device configured to generate a temperature image of the object to be inspected based on the electrical signal. Compared with the prior art, the millimeter-wave inspection apparatus of the present invention has a simple and compact structure; it would not be harmful to the human health by employing the passive millimeter-wave human body security inspection technology. With the above configuration, the contraband items to be concealed within the human clothing can be efficiently and effectively detected.
摘要:
The present invention discloses a scanning device of back-scatter imaging with a radiation beam, comprising: a radiation source; a fixed shield plate and a rotatable shield body disposed between the radiation source and a object to be scanned respectively, wherein the fixed shield plate is stationary with respect to the radiation source and the rotatable shield body is rotatable with respect to the fixed shield plate. The fixed shield plate is provided with a ray passing-through region thereon, which allows for a radiation beam from the radiation source to pass through the fixed shield plate, a ray incidence region and a ray emergence region are arranged on the rotatable shield body respectively, during the rotatable scanning of the rotatable shield body, the ray passing-through region of the fixed shield plate continuously intersects with the ray incidence region and the ray emergence region of the rotatable shield body to generate collimated holes for scanning. The ray passing-through region of the fixed shield plate is a rectilinear slit, the rotatable shield body is a cylinder, and the ray incidence and emergence regions are configured to be a series of small discrete holes disposed along a spiral line respectively. In addition, the present invention discloses a scanning method for back-scatter imaging with a radiation beam.
摘要:
Disclosed is a detector device, comprising: an adjustable positioning base and a detector module. The adjustable positioning base includes: a horizontal plate being able to fixedly connect onto an annular rotation table or disk; and a vertical plate extending from the horizontal plate and generally perpendicular to the horizontal plate. A horizontal through long groove is provided at one side of the vertical plate, and the detector module is able to fixedly installed in said horizontal through long groove of the adjustable positioning base. By employing the technical solution defined in the present invention, the detector device has a compact structure, and precision adjustment and positioning for the detector device can be achieved. In addition, the present invention also provides a CT inspection system having the above detector device.
摘要:
The present invention discloses a detecting method of the article detection apparatus composed of an individual DR subsystem and an individual CT subsystem, the method comprising: obtaining a first projection data on ray attenuation coefficient by using the DR subsystem to project the A-layer of an article at a first projection angle, and obtaining a second projection data on ray attenuation coefficient by using the CT subsystem to project the A-layer of the article at a second projection angle different from the first projection angle; and judging whether the A-layer of the detected article exists a dangerous article based on the first projection data and the second projection data so as to obtain a first judgment on the A-layer of the detected article. In the present invention, by combining the projection data of the DR subsystem and the projection data of the CT subsystem, the data information to be used to judge the detected article is greatly increased, therefore, both the detection accuracy and speed are improved.
摘要:
The present invention discloses a millimeter-wave inspection apparatus. The millimeter-wave inspection apparatus comprises: optics devices, configured to receive millimeter-wave energy radiated from an object to be inspected and focus the received millimeter-wave energy; a radiometer receiving device configured to receive the focused millimeter-wave energy and transform the millimeter-wave energy into electrical signal; and an imaging device configured to generate a temperature image of the object to be inspected based on the electrical signal. Compared with the prior art, the millimeter-wave inspection apparatus of the present invention has a simple and compact structure; it would not be harmful to the human health by employing the passive millimeter-wave human body security inspection technology. With the above configuration, the contraband items to be concealed within the human clothing can be efficiently and effectively detected.
摘要:
The present invention discloses a detecting method of an article detection apparatus composed of an individual DR subsystem and an individual CT subsystem, the method comprising: obtaining a first projection data on ray attenuation coefficient by using the DR subsystem to project an A-layer of an article at a first projection angle, and obtaining a second projection data on ray attenuation coefficient by using the CT subsystem to project an A-layer of the article at a second projection angle different from the first projection angle; and judging whether an A-layer of the detected article contains a dangerous article based on the first projection data and the second projection data so as to obtain a first judgment on an A-layer of the detected article. In the present invention, by combining the projection data of the DR subsystem and the projection data of the CT subsystem, the amount of data information used to judge the detected article is greatly increased, therefore, both the detection accuracy and speed are improved.
摘要:
The present invention discloses a method for performing CT imaging on a region of interest of an object under examination, comprising: acquiring the CT projection data of the region of interest; acquiring the CT projection data of region B; selecting a group of PI line segments covering the region of interest, and calculating the reconstruction image value for each PI line segment in the group; and combining the reconstruction image values in all the PI line segments to obtain the image of the region of interest. The present invention further discloses a CT imaging device using this method and a data processor therein. Since the 2D/3D slice image of the region of interest can be exactly reconstructed and obtained as long as the X-ray beam covers the region of interest and the region B, it is possible to use a small-sized detector to perform CT imaging on the region of interest at any position of a large-sized object, which reduces to a great extent the radiation dose of the X-ray during the CT scanning.
摘要:
A method for phase contrast imaging comprises: illuminating an object by terahertz radiation such that the terahertz radiation interacts with the object; illuminating a diffraction grating by the terahertz radiation that has interacted with the object; translating the diffraction grating along the direction of the grating wave vector, to measure, for each of different grating positions, an intensity distribution of the terahertz radiation that has interacted with the object and with the grating in a diffraction field; and retrieving a phase contrast image of the object from the intensity distributions. An apparatus for phase contrast imaging is also provided.