Abstract: 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.

Abstract: A collimator for adjusting an X-ray beam includes: an up-and-down adjustment mechanism; a left-and-right adjustment mechanism, a supporting member; and an adjusting plate connected with the supporting member. The up-and-down adjustment mechanism comprises first rotating nuts, up-and-down moving leading screws threadedly connected with the first rotating nuts, and upper and lower sliding stops located in the supporting member. Each of the leading screws is connected with the upper and lower sliding stops to drive the upper and lower sliding stops, respectively, to vertically move. The left-and-right adjustment mechanism comprises second rotating nuts, horizontally moving leading screws connected with second rotating nuts, and left and right sliding stops located in the supporting member. Each of the horizontally moving leading screws are connected with the left and right sliding stops to drive the left and right sliding stops, respectively, to horizontally move.

Abstract: A CT method and an apparatus for liquid safety-detection with a radiation source relate to a radiation imaging detecting technology field. The invention comprises using a radiation source, a detector and data collector, a computer data processor; and the main steps are: 1) a liquid article to be detected being placed onto a rotary platform which is rotatable; 2) the ray emitted from the radiation source passing through the liquid article, and being received and formed into projection data by the detector and data collector; and 3) the projection data being transmitted to the computer data processor, which processes it to obtain the liquid density of the detected article, compares the result with the densities of dangerous articles in a current database, and then visually displays the detected information of the detected liquid article.

Abstract: For quarantine treatment of a farming and forestry product for pest control, a method and a device may irradiate logs as a phytosanitary treatment with electron beams. The method may include: spreading the logs; aligning the spread logs to be flush at one end; conveying the spread and flush logs laterally; conveying the logs longitudinally through an irradiation field formed by accelerators to provide treatment of irradiation with the electron beams; throwing the irradiated logs out; and laterally conveying the logs away. The device may include a conveying device for conveying the logs, a shielding structure surrounding the conveying device, and accelerators provided in the conveying path of the conveying device. Two or more accelerators may be provided in centrosymmetry about the conveying path.

Abstract: A method for conducting irradiation of all logs of a whole vehicle with X-rays as a phytosanitary treatment may include: connecting a traction device and a goods carrying vehicle outside a shielding door; opening the door; the traction device pulling the vehicle into a tunnel; closing the shielding door; upon the vehicle reaching an irradiation region, accelerators generating X-rays; the traction device pulling the vehicle to pass through the irradiation region; stopping the X-rays; opening the door; the traction device pulling the vehicle away from the irradiation treatment tunnel; and disconnecting the traction device from the vehicle. A device may include a shielding structure, a tunnel formed therethrough; a rail along the tunnel; accelerators within the tunnel; and a traction device for pulling a vehicle carrying goods for quarantine treatment, the accelerators symmetrically arranged at both sides of and on the top of an irradiation region in the tunnel.

Abstract: A check process may be performed without rotation of a radiation source or detector. A CT scan security check device may include a radiation source and a detector forming a radiation detection area, a conveyer mechanism conveying an article along a path, and a multidimensional movement mechanism causing a relative displacement between the article and the radiation detection area in a vertical direction and causing the article to rotate about a vertical axis. A CT scan security check method may include: 1) displacing the article relative to the radiation detection area in the vertical direction; 2) rotating the article; 3) during the checked article passing through the radiation detection area, obtaining data regarding a radiation ray that passes through the article; and 4) transmitting the data for a CT arithmetic reconstruction.

Abstract: A method and an apparatus for liquid safety-detection by backscattering with a radiation source are provided that relate to a radiation detecting technology field.

Abstract: A method and an apparatus for liquid safety-detection with a radiation source relate to a radiation detecting technology.

Abstract: Disclosed is a method and a device for security-inspection of liquid articles with radiations, which relate to the field of radiation inspection technology. The method comprises steps of acquiring original environment information, emitting radiation beams to transmit the liquid articles, receiving the radiation beams transmitted through the liquid articles to form multi-angle projection data, computing a radiation absorption coefficient of the liquid articles to be detected by inverse operation of the multi-angle projection data, based on the initial environmental information and the uniformity of the liquid articles, and comparing the radiation absorption coefficients with the preset data to get the relevant information of the liquid articles. Comparing with the prior art, the present invention is not subjected to affection of cuter package of the liquid article, and is advantageous of high anti-jamming high accuracy, high safety and reliability, low cost and small size.

Abstract: The present invention discloses a ray beam guiding apparatus, comprising a ray beam guiding box having substantially fan-shaped top and bottom surfaces, defining an inner space, and having open wide and narrow ends; an engaging member joined to the narrow end of the box; a first collimator mounted to the box adjacent to the narrow end for adjusting size/shape of the ray beam in horizontal vertical direction; a second collimator having a calibration slit or grill and mounted to the box adjacent to the wide end; and an adjusting member connecting the engaging member and a ray generator to adjust a distance therebetween. The box can adjust size/shape and centering of the ray beam, so that inspection quality can be improved and thickness of the ray shielding layer can be reduced, the box is applicable to a ray inspection system which performs security inspection of liquid articles.

Abstract: The present invention relates to a radiation inspection system discloses a shielding door device for a radiation inspection system, comprising a door body, two guides located on two opposite sides of the door body, a rack, a gear and a motor. The two guides are fixed on an upper surface of a frame and the door body is movably connected to the two guides via bearings. The rack is fixed on a bottom of the door body and meshed with the gear. The gear is coupled with a shaft of the motor fixed on a lower surface of the frame. With the above configuration, the present invention is advantageous in automatic and complete shielding of the radiation inspection system without interference. In addition the shielding door can be controlled intelligently, so that accidental radiation leakage can be prevented.

Abstract: Disclosed is a collimator for adjusting X-ray beam, comprising: an up-and-down adjustment mechanism (11); a left-and-right adjustment mechanism (21); a supporting member (15); and an adjusting plate (17) connected with the supporting member (15), wherein: said up-and-down adjustment mechanism (11) comprises a first rotating nut (13), an up-and-down moving leading screw (12) threadedly connected with said first rotating nut (13), and upper and lower sliding stops (18) located in said supporting member (15), wherein ends of said leading screw (12) are connected with said upper and lower sliding stops (18) to drive said upper and lower sliding stops (18), respectively, to vertically move; and said left-and-right adjustment mechanism (21) comprises a second rotating nut (23), a horizontally moving leading screw (22) connected with said second rotating nut (23), and left and right sliding stops (25) located in said supporting member (15), wherein inner ends of said horizontally moving leading screw (22) are connec

Abstract: The present invention discloses a ray beam guiding apparatus, comprising a ray beam guiding box having substantially fan-shaped top and bottom surfaces, defining an inner space, and having open wide and narrow ends; an engaging member joined to the narrow end of the box; a first collimator mounted to the box adjacent to the narrow end and adapted to adjust size/shape of the ray beam in horizontal vertical direction; a second collimator having a calibration slit or grill and mounted to the box adjacent to the wide end; and an adjusting member connecting the engaging member and a ray generator to adjust a distance therebetween. The box can adjust size/shape and centering of the ray beam, so that inspection quality can be improved and thickness of the ray shielding layer can be reduced, the box is applicable to a ray inspection system which performs security inspection of liquid articles.

Abstract: The present invention discloses a lifting apparatus, comprising: a vertical guide device; a turntable device which is movable along the vertical guide device upwards or downwards; and a first driving device which drives the turntable device moving in an upward and downward direction guided by the vertical guide device. Wherein said turntable device comprises: a bracket which is slidably engaged with the vertical guide device and projects perpendicularly toward a side of the vertical guide device; a turntable which is rotatably provided on the bracket; and a second driving device which rotates the turntable on the bracket. The present invention further discloses a safety inspection system comprising the lifting apparatus. Compared with prior art, the present invention combines a rotating mechanism and a lifting mechanism as a single apparatus, thus, realizing the self rotation and elevation of the objects to be detected.

Abstract: A CT method and an apparatus for liquid safety-detection with a radiation source relate to a radiation imaging detecting technology field. The invention comprises using a radiation source, a detector and data collector, a computer data processor; and the main steps are: 1) a liquid article to be detected being placed onto a rotary platform which is rotatable; 2) the ray emitted from the radiation source passing through the liquid article, and being received and formed into projection data by the detector and data collector; and 3) the projection data being transmitted to the computer data processor, which processes it to obtain the liquid density of the detected article, compares the result with the densities of dangerous articles in a current database, and then visually displays the detected information of the detected liquid article.

Abstract: A method and an apparatus for liquid safety-detection by backscatter with a radiation source relate to a radiation detecting technology field.

Abstract: A method and an apparatus for liquid safety-detection with a radiation source relate to a radiation detecting technology field. The main steps of the method of the invention are: an article to be detected being conveyed into an operation zone within a radiation shield field; the ray emitted from a radiation source passing through the article to be detected, and being received by a detector; the detector transmitting the received ray signal to a data collector; the data collector amplifying and forming the ray signal, and transmitting such data and the data collected by thickness measuring probing heads to a data processing computer; and the data processing computer processing the two groups of data to derive the density and atomic number of the detected liquid, comparing the result with the densities and atomic numbers of dangerous articles in a existing database, and displaying the detected information of the detected article.

Abstract: A relocatable container inspection device, which is constituted by modularized units, is used for inspecting a container.

Abstract: A relocatable container inspection device, which is constituted by modularized units, is used for inspecting a container.