Patent application number | Description | Published |
20080232541 | CT SCAN SECURITY CHECK DEVICE AND METHOD - 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. | 09-25-2008 |
20080310598 | Method for calibrating dual-energy CT system and method of image reconstruction - A method for calibrating a dual-energy CT system and an image reconstruction method are disclosed to calculate images of atomic number and density of a scanned object as well as its attenuation coefficient images at any energy level. The present invention removes the effect from a cupping artifact due to X-ray beam hardening. The method for calibrating a dual-energy CT system is provided comprising steps of selecting at least two different materials, detecting penetrative rays from dual-energy rays penetrating said at least two different materials under different combinations of thickness to acquire projection values, and creating a lookup table in a form of correspondence between said different combinations of thickness and said projection values. The image reconstruction method is provided comprising steps of scanning an object with dual-energy rays to acquire dual-energy projection values, calculating projection values of base material coefficients corresponding to said dual-energy projection values based on a pre-created lookup table, and reconstructing an image of base material coefficient distribution based on said projection values of base material coefficients. In this way, images of atomic number and density of an object as well as its attenuation coefficient images can be calculated from the images of the distribution of base material coefficients. Compared with the prior art technique, the method proposed in the present invention has advantages of simple calibration procedure, high calculation precision and invulnerability to X-ray beam hardening. | 12-18-2008 |
20090003516 | X-Ct Scan System - An X-CT scan system includes a base, an object rotary support, an X-ray generation device and a data acquisition system, wherein one side of the detector is leveled to or beyond the prolong line of the connecting line between the X-ray source of the X-ray generation device and the center of the object rotary support, the length of the beyond portion is less than the radius of the imaging field. The advantage of the invention is in that the invention can reconstruct the entire image of the object by means of X-ray projection data which only covers half of the area of the object. Compared with the traditional CT scan system, half of the detector size can be saved at most. The X-CT scan system is simplified and the projection data amount for scan and computation amount for image reconstruction are also reduced with the reconstructed image quality guaranteed. | 01-01-2009 |
20090006019 | Method and device for inspection of drugs concealed in liquid articles - Disclosed are a method and a device for inspection of drugs concealed in liquid articles without opening the outer packages. The method comprises the steps of: emitting radiation beams to transmit through the liquid article; receiving the radiation beams transmitted through the liquid article to get multi-angle projection data; inversely operating the multi-angle projection data based on the uniformity of the liquid article to obtain an attribute value of the inspected liquid article; retrieving a reference attribute value in a pre-created database by using the identification information of the liquid article as an index, and calculating a difference between the calculated attribute value and the reference attribute value; and determining whether the difference is larger than a predefined threshold value; wherein it is concluded that there are drugs concealed in the liquid article when the difference is determined to be larger than the predefined threshold value. | 01-01-2009 |
20090010387 | RADIATION IMAGING SYSTEM - The present invention discloses an radiation imaging system, comprising: an accelerator for generating rays which penetrate through the objects to be inspected and an synchronous signal; a detector with a plurality of detecting modules, adapted for detecting rays; a signal processor for generating a selection signal according to the synchronous signal, so as to select a detecting module for detecting the rays; a data converter for converting the signal detected by said detecting module into digital data, and then buffering the digital data in said signal processor; and a communication controller connected to an image processor, adapted for transmitting the digital data buffered in said signal processor to said image processor. The system according to the present invention allows high-speed and stable data acquisition and data conversion and accurate and reliable data transmission, when the data amount is significant. | 01-08-2009 |
20090060128 | DEVICE AND METHOD FOR INSPECTING CONTRABAND IN AVIATION CARGO CONTAINER - A device for inspecting contraband in an aviation cargo containers includes: a turntable located at an object inspecting position and configured to carry the object to be inspected and bring the object into rotation; an object conveying system; a scanning system including a radiation source and a detector which can synchronously move in the vertical direction; a turntable drive/control system which drives and controls rotation of said turntable so that the turntable can continuously rotate about its rotation axis or rotate to any predetermined angular position; a scanning drive/control system which drives and controls the radiation source and the detector into synchronous movement in the vertical direction so that the radiation source and the detector can continuously move in the vertical direction or move to any predetermined vertical position. The device of the present invention can scan the object and form images in various scanning modes to meet different needs. | 03-05-2009 |
20090060129 | DEVICE FOR INSPECTING CONTRABAND IN AVIATION CARGO CONTAINER - A device for inspecting contraband in an aviation cargo container includes: a turntable and a scanning system, the scanning system including a radiation source; a detector; a radiation source mounting structure; and a detector mounting structure for mounting the detector. Each of said radiation source mounting structure and said detector mounting structure includes at least one column assembly. The radiation source and the detector are mounted on the column assembly and allowed to synchronously ascend and descend along said column assembly. By combining different movement modes of the turntable and the scanning system, the device of the present invention can scan the object in various scanning modes. The device is stable in structure, convenient in installation, and occupies a small space. The device can inspect aviation containers over two meters long and/or over two meters wide and achieve a relatively high passing rate of the objects. | 03-05-2009 |
20090065698 | CONTROL UNIT AND CONTROL METHOD FOR RADIATION SOURCE AND RADIATION INSPECTION SYSTEM AND METHOD THEREOF - A radiation inspection system is disclosed. The radiation inspection system comprises: an inspection passage through which a moving object under inspection can pass, a radiation source disposed on a side of the inspection passage for emitting radiation, an array of detectors disposed on the other side of the inspection passage opposite to the radiation source for receiving the radiation emitted from the radiation source, a detector for detecting the moving object, and a controller for receiving a signal from the detector and controlling the radiation source to emit radiation when the detector detects the moving object for radiation imaging and inspection of the moving object. According to the radiation inspection system, the controller can control the radiation source to automatically emit radiation beam based on the detection signal from the detector for inspecting the moving object. As a result, inspection efficiency is improved, safety is increased, and misoperation of the radiation source is eliminated. | 03-12-2009 |
20090092220 | METHOD AND DEVICE FOR INSPECTION OF LIQUID ARTICLES - Disclosed are a method and a device for security-inspection of liquid articles with dual-energy CT imaging. The method comprises the steps of obtaining one or more CT images including physical attributes of liquid article to be inspected by CT scanning and a dual-energy reconstruction method; acquiring the physical attributes of each liquid article from the CT image; and determining whether there are drugs concealed in the inspected liquid article based on the difference between the acquired physical attributes and reference physical attributes of the inspected liquid article. The CT scanning can be implemented by a normal CT scanning technique, or a spiral CT scanning technique. In the normal CT scanning technique, the scan position can be preset, or set by the operator with a DR image, or set by automatic analysis of the DR image. | 04-09-2009 |
20090110143 | INSPECTION SYSTEM, INSPECTION METHOD, CT APPARATUS AND DETECTION DEVICE - An inspection system is disclosed. The system comprises a CT apparatus. The CT apparatus includes a gantry, a radiation source connected with the gantry, a detection device connected with the gantry substantially opposite the radiation source, and a transfer device for transferring an object under inspection. The detection device comprises N rows of detectors arranged at predetermined intervals, where N is an integer greater than 1. With the inspection system according to the present invention, the CT apparatus can perform scanning imaging at a high rate to enable the CT apparatus and an scanning imaging device for obtaining a two-dimensional image of an object under inspection to simultaneously operate, thereby compensating each other's insufficiency. | 04-30-2009 |
20090129544 | METHOD AND APPARATUS FOR SUBSTANCE IDENTIFICATION - A method for substance identification and an apparatus thereof are disclosed. The method comprises comprising steps of: transmitting an object under inspection using high-energy rays and low-energy rays, so as to obtain a high-energy transmission image and a low-energy transmission image for the object, wherein a value of each pixel in the high-energy image indicates a high-energy transparency of the high-energy rays with respect to corresponding parts of the object, and a value of each pixel in the low-energy image indicates a low-energy transparency of the low-energy rays with respect to corresponding parts of the object; calculating a value of a first function for the high-energy transparency and a value of a second function for the high-energy transparency and the low-energy transparency, for each pixel; and classifying locations determined by the value of the first function and the value of the second function using a pre-created classification curve, so as to identify the type of the substance of a part of the object corresponding to each pixel. With the present invention, it is possible to not only obtain a transmission image of the object, but also obtain material information in the object. | 05-21-2009 |
20090168948 | Detector device and CT inspection system having the same - 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. | 07-02-2009 |
20090168959 | ARTICLE DETECTION APPARATUS AND A DETECTING METHOD - 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. | 07-02-2009 |
20090180593 | RADIATION DEVICE FOR HUMAN BODY INSPECTION - Disclosed is a radiation device for the human body inspection. The device includes a X-ray generator for radiating radiation; a detector for receiving the radiation radiated from the X-ray generator; a first flexible member connected with the X-ray generator for hoisting the X-ray generator; a second flexible member connected with the detector for hosing the detector; and a driving device for synchronically driving the X-ray generator and the detector through the first and second flexible members, and at the same time, the X-ray generator and the detector are spaced from each other a predetermined distance in a horizontal direction. The radiation device for the human body inspection according to the present invention can ensure that the radiation source and the detector can be operated synchronically during the whole inspection process; thereby the quality of radiation imaging is increased. Furthermore, the radiation device for the human body inspection according to the present invention is allowed to save cost and reduce noise. | 07-16-2009 |
20090262891 | LINEAR TRACK SCANNING IMAGING SYSTEM AND METHOD - In a linear track scanning imaging system and method, the imaging system may include: a ray generating unit having a plurality of ray sources that emit beams alternately, only one ray source at a time; an actuating arrangement causing an object under examination to move with respect to the linear track scanning imaging system along a linear track, leading the object to pass through a scanning area of the linear track scanning imaging system; a data collecting unit that collects projection data of the object for each ray source; an imaging unit that reconstructs an image of the object under examination based on the projection data collected for each ray source; and a display unit for displaying the reconstructed image. | 10-22-2009 |
20090316136 | METHOD AND SYSTEM FOR IDENTIFYING MOVING OBJECT, AND METHOD AND SYSTEM FOR INSPECTING MOVING OBJECT BY RADIATION IMAGING - Disclosed is a method for identifying a moving object, comprising: a driving-in step of moving a moving object into a passage, a velocity measuring step of measuring a moving velocity of the moving object, a light beam emitting step of emitting light beams from one side of the passage, a light beam receiving step of receiving the light beams not shielded by the moving object at other side of the passage, a profile determining step of determining a profile of at least one portion of the moving object based on the received light beams and the measured moving velocity of the moving object, and an identifying step of determining type of the moving object by comprising the profile of the at least one portion of the moving object with information of moving objects stored previously. The method and the system according to the present invention can adopt corresponding scanning controlling manners for different vehicles, so that inspection information of inspected vehicles is complete, inspection images are of high quality, and radiation dose received by drivers are minimal. | 12-24-2009 |
20090323057 | RAMAN SPECTROSCOPY SYSTEM AND RAMAN SPECTROSCOPY DETECTION METHOD - The present invention relates to a Raman spectroscopy system that includes a detection center. The detection center includes at least one light source for outputting exciting light which excites a detected object to generate Raman scattered light, and an analysis device for obtaining the Raman spectroscopy of the detected object. The Raman spectroscopy system further includes at least one detection terminal, each of which includes at least one Raman probe that each introduces the exciting light to the detected object, collects the Raman scattered light generated by the detected object, and returns said Raman scattered light to the detection center. The present invention also relates to a method for detecting Raman spectroscopy. | 12-31-2009 |
20090323894 | DEVICE AND METHOD FOR REAL-TIME MARK OF SUBSTANCE IDENTIFICATION SYSTEM - Disclosed are a method and a device for real-time mark for a high-energy X-ray dual-energy imaging container inspection system in the radiation imaging field. The method comprises the steps of emitting a first main beam of rays and a first auxiliary beam of rays having a first energy, and a second main beam of rays and a second auxiliary beam of rays having a second energy; causing the first and second main beams of rays transmitting through the article to be inspected; causing the first and second auxiliary beams of rays transmitting through at least one real-time mark material block; collecting values of the first and second main beams of rays that have transmitted through the article to be inspected as dual-energy data; collecting values of the first and second auxiliary beams of rays that have transmitted through the real-time mark material block as adjustment parameters; adjusting the set of classification parameters based on the adjustment parameters; and identifying the substance according to the dual-energy data based on adjusted classification parameters. The method according to the invention simplifies the mark procedure for a substance identification subsystem in a high-energy dual-energy system while improves the stability of the material differentiation result of the system. | 12-31-2009 |
20100040192 | IMAGE RECONSTRUCTION METHOD FOR HIGH-ENERGY, DUAL-ENERGY CT SYSTEM - Disclosed is an image reconstruction method in a high-energy dual-energy CT system. The method comprises steps of scanning an objection with high-energy dual-energy rays to obtain high-energy dual-energy projection values, calculating projection values of base material coefficients corresponding to the dual-energy projection values on the basis of a pre-created lookup table or by analytically solving a set of equations, and obtaining an image of base material coefficient distribution based on the projection values of base material coefficients. The method provides a solution for reconstruction with high-energy dual energy CT technology and thus a more effective approach for substance identification and contraband inspection, thereby bringing a significant improvement on accuracy and efficiency in security inspection. | 02-18-2010 |
20100072361 | SECURITY INSPECTION SYSTEM FOR PERSONS - The invention provides a security inspection system for inspecting persons, characterized in that it comprises: a passageway which provides an inspection space isolated or partially isolated from an ambient environment, in which at least one sub-passageway allowing persons to be inspected to pass is provided in the inspection space, and each of the sub-passageways is provided with at least one millimeter wave imaging device for millimeter wave imaging of persons being inspected; and an ion mobility spectrometer for ionizing particles of substance or gases that are released or volatilized from the inspected persons into the air in the passageway and then measuring a mobility rate thereof under the action of the electric field to effect identification of substances. At least one radioactive substance inspection device may also be provided in the passageway to detect whether the person being inspected carries radioactive substances. | 03-25-2010 |
20100243874 | PHOTONEUTRON CONVERSION TARGET - A photoneutron conversion target for generating photoneutrons by directing an x-ray beam at the photoneutron conversion target includes an elongated body having a first end and a second end. When the photoneutron conversion target is in use, the x-ray beam enters the body and propagates in a direction from the first end to the second end. The body of the photoneutron conversion target is shaped such that propagation of the x-ray beam is substantially proportionate to an intensity distribution of the x-ray beam, so that the greater an intensity of x-rays of the x-ray beam, the greater the propagation distance of the x-rays within the body of the photoneutron conversion target. The photoneutron conversion target according to the invention can make full use of the x-ray beam so as to increase a yield of photoneutrons. | 09-30-2010 |
20100266103 | PHOTONEUTRON CONVERSION TARGET AND PHOTONEUTRON - X RAY SOURCE - A photoneutron-x ray source includes a photoneutron conversion target, which outputs both photoneutrons and x-rays simultaneously. The photoneutron-x ray source includes an x-ray generator for generating an x-ray main beam that is applied to the photoneutron conversion target. The photoneutron conversion target generates photoneutrons upon the application of the x-ray main beam to the photoneutron conversion target. The photoneutron conversion target has a body that defines a passageway extending through the body and that is structured such that a first x-ray beam of the x-ray main beam can pass through the passageway without any reaction with the body, while a second x-ray beam of the x-ray main beam can enter the body and react with the body to emit the photoneutrons. | 10-21-2010 |
20100284514 | METHOD AND DEVICE FOR INSPECTION OF LIQUID ARTICLES - Disclosed are a method and a device for security-inspection of liquid articles with dual-energy CT imaging. The method comprises the steps of obtaining one or more CT images including physical attributes of liquid article to be inspected by CT scanning and a dual-energy reconstruction method; acquiring the physical attributes of each liquid article from the CT image; and determining whether the inspected liquid article is dangerous based on the physical attributes. The CT scanning can be implemented by a normal CT scanning technique, or a spiral CT scanning technique. In the normal CT scanning technique, the scan position can be preset, or set by the operator with a DR image, or set by automatic analysis of the DR image. | 11-11-2010 |
20110024624 | PHASE CONTRAST IMAGING METHOD AND APPARATUS - 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 comprises: a terahertz radiation emitter for generating terahertz radiation, which illuminates an object to interact with the object; a diffraction grating, which is illuminated by the terahertz radiation that has interacted with the object; a terahertz radiation detector for measuring, 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 a data collecting and processing system for retrieving a phase contrast image of the object from the intensity distributions. | 02-03-2011 |
20110211671 | METHOD AND DEVICE FOR INSPECTION OF LIQUID ARTICLES - Disclosed are a method and a device for security-inspection of liquid articles with dual-energy CT imaging. The method comprises the steps of obtaining one or more CT images including physical attributes of liquid article to be inspected by CT scanning and a dual-energy reconstruction method; acquiring the physical attributes of each liquid article from the CT image; and determining whether there are drugs concealed in the inspected liquid article based on the difference between the acquired physical attributes and reference physical attributes of the inspected liquid article. The CT scanning can be implemented by a normal CT scanning technique, or a spiral CT scanning technique. In the normal CT scanning technique, the scan position can be preset, or set by the operator with a DR image, or set by automatic analysis of the DR image. | 09-01-2011 |
20110261922 | METHOD AND DEVICE FOR INSPECTION OF LIQUID ARTICLES - Disclosed are a method and a device for security-inspection of liquid articles with dual-energy CT imaging. The method comprises the steps of obtaining one or more CT images including physical attributes of liquid article to be inspected by CT scanning and a dual-energy reconstruction method; acquiring the physical attributes of each liquid article from the CT image; and determining whether the inspected liquid article is dangerous based on the physical attributes. The CT scanning can be implemented by a normal CT scanning technique, or a spiral CT scanning technique. In the normal CT scanning technique, the scan position can be preset, or set by the operator with a DR image, or set by automatic analysis of the DR image. | 10-27-2011 |
20120002788 | ARTICLE INSPECTION DEVICE AND INSPECTION METHOD - The present invention discloses an article inspection device, comprising: a x-ray machine, a collimation unit, a transmission detector array and at least one scattering detector array. Each of the at least one scattering detector array comprising a plurality of same scattering detector modules arranged in a matrix of i-rows and j-columns. A transmission cross section of the article transmitted by the x-rays is divided into a plurality of same sub-regions arranged in a matrix of i-rows and j-columns. The plurality of scattering detector modules arranged in i-rows and i-columns correspond to the plurality of sub-regions arranged in i-rows and j-columns one by one for detecting pair production effect annihilation photons and Compton-effect scattering photons from the respective sub-regions. Obtaining atomic numbers of the respective sub-regions based on a ratio of the pair production effect annihilation photon count to the Compton-effect scattering photon count, so as to form a three-dimensional image of the article. In addition, the present invention further discloses an article inspection method. | 01-05-2012 |
20120011947 | MILLIMETER-WAVE RECEIVING DEVICE - Disclosed is a millimeter-wave receiving device. The device includes at least one radiometer; and a positioning assembly for holding the radiometer, wherein the positioning assembly comprises: a first positioning member having a first surface; a second positioning member having a second surface, the first surface of the first positioning member and the second surface of the second positioning member holding the radiometer in opposite to each other. With the configuration according to the present invention, the at least one radiometer in the millimeter-wave receiving device can be located in all of freedoms on basis of various design requirements of the radiation path to ensure that the radiometer can be arranged in desired receiving positions. | 01-19-2012 |
20120014579 | CT DEVICE AND METHOD BASED ON MOTION COMPENSATION - A CT device and method based on motion compensation are proposed. The present invention obtains motion parameters of a target object by using a stereo-vision-based motion measurement system, and then implements motion compensation through the technology based on reconstructed image matrix transformation, thereby obtaining a clear 2D/3D CT image while eliminating motion artifacts. The present invention can effectively eliminate motion artifacts caused by the scanned object's own motions in the CT scanning, and can be easily embedded into the existing CT scanning equipments. The present invention can improve quality of the CT images, and is especially important for CT imaging of some special groups of people that can not control their own motions, such as Parkinson's patients, infants, living mouse and so on. It can also improve ultra-high-resolution imaging of human body. | 01-19-2012 |
20120064894 | ANTENNA MATCHING STRUCTURE, ANTENNA MATCHING METHOD AND WIRELESS COMMUNICATION TERMINAL - The present invention relates to an antenna matching structure, an antenna matching method and a wireless communication terminal. In which, the antenna matching structure comprising: a measuring unit configured to measure a RSSI value; a control unit configured to generate a first switching control signal when the RSSI value measured by the measuring unit is less than a predetermined threshold; and a parameter switching unit configured to select one set of matching parameters from predetermined at least one set of matching parameters according to the first switching control signal, and switch current matching parameters of the adjustable antenna matching circuit to the selected matching parameters. According to the embodiments of the present invention, a higher RSSI value can be acquired to ensure the signal transmission quality. | 03-15-2012 |
20120085909 | MILLIMETER-WAVE INSPECTION APPARATUS - 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. | 04-12-2012 |
20120140874 | Computer Tomography Imaging Device and Method - 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. | 06-07-2012 |
20120154182 | KEYS WITH TOUCH DETECTION FUNCTION AND ELECTRONIC APPARATUS WITH THE KEYS - A key for electronic apparatus, e.g., a mobile phone, and electronic apparatus including such keys, the key combines touch detection function with mechanical key pressing function. The key includes a dome, contact points member, e.g., a gold key finger, on a circuit board of the electronic apparatus and below the dome; a plurality of SMT pads on the circuit board about the contact points member, the dome connected to at least two of the SMT pads, and the contact points member connected to one of the SMT pads, and wherein the dome is connected to a capacitive touch detection scan circuit and the capacitive touch detection scan circuit is configured to detect a capacitance change caused by a finger's touch on the key, so as to form a signal indicating touch position and/or movement of the finger by combining a position of the key. | 06-21-2012 |
20120168616 | SAMPLE FEEDING DEVICE FOR ION MOBILITY SPECTROMETER, METHOD OF USING THE SAME AND ION MOBILITY SPECTROMETER - The present invention discloses a sample feeding device for an ion mobility spectrometer, which is adapted to guide a sample to be detected into an inlet of a drift tube of the ion mobility spectrometer. The sample feeding device comprises a solid sample feeding component; a sample inlet component; a attachment component, wherein the solid sample feeding component has an internal cavity defined therein, one end of the solid sample feeding component is communicated with the sample inlet component through the internal cavity, while the other end is communicated with the inlet of the ion drift tube through the attachment component; and a gaseous sample feeding component, comprising a body and an external attachment component, the body has a gas channel therein, and the external attachment component includes an inlet hole which is communicated with the gas channel, wherein when the external attachment component is fitted with the sample inlet component, the body is inserted into the internal cavity, so that a channel of the solid sample feeding component is closed, and only the gas channel of the gaseous sample feeding component is communicated with the inlet of the drift tube of the ion mobility spectrometer. | 07-05-2012 |
20120168620 | SAMPLE FEEDING DEVICE FOR TRACE DETECTOR AND TRACE DETECTOR WITH SAMPLE FEEDING DEVICE - A sample feeding device for a trace detector is disclosed. The sample feeding device comprises: a sample feeding chamber disposed in the sample feeding device to desorb a sample from a sample feeding member; and a valve assembly configured to fluidly communicate the sample feeding chamber with a drift tube of the trace detector during feeding sample. With the above configuration of the present invention, for example, the sensitivity of the detector can be increased by improving the permeation ratio of the sample. In addition, interior environment of the drift tube is isolated from exterior environment to avoid a drift region of the drift tube from being polluted. The important parameters, such as sensitivity, a position of a peak of a substance, a resolution, of the detector can be kept constant. As a result, operation reliability and consistency of the detector can be achieved. | 07-05-2012 |
20120170716 | SCANNING DEVICE AND METHOD FOR BACK-SCATTER IMAGING WITH A RADIATION BEAM - 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. | 07-05-2012 |
20120207271 | ARTICLE INSPECTION DEVICE AND INSPECTION METHOD - The present invention discloses an article inspection device, comprising: an x-ray machine, a collimation unit, a transmission detector array and a scattering detector array. The scattering detector array comprising a plurality of same scattering detector modules arranged in a matrix of i-rows and j-columns. A transmission cross section of the article transmitted by the x-rays is divided into a plurality of same sub-regions arranged in a matrix of i-rows and j-columns. The plurality of scattering detector modules arranged in i-rows and j-columns correspond to the plurality of sub-regions arranged in i-rows and j-columns one by one for detecting pair production effect annihilation photons and Compton-effect scattering photons from the respective sub-regions. Obtaining atomic numbers of the respective sub-regions based on a ratio of the pair production effect annihilation photon count to the Compton-effect scattering photon count, so as to form a three-dimensional image of the article. In addition, the present invention further discloses an article inspection method. | 08-16-2012 |
20120224671 | RADIATION INSPECTION APPARATUS AND INSPECTION METHOD FOR OBJECT SECURITY INSPECTION - The present invention relates to a radiation inspection apparatus for object security inspection, comprising: a ray generator configured to emit a ray, a collimator configured to collimate the ray emitted from the ray generator, and a detector configured to receive the collimated ray collimated by the collimator, wherein the collimated ray forms an irradiated area on the detector included by an effective detect area of the detector. The present invention also relates to a method of performing a security inspection to a body using a radiation inspection apparatus. With the above technical solutions, the present invention can achieve a low single inspection absorptive dose and a micro dose inspection while meeting inspection requirements to improve public radiation security. | 09-06-2012 |
20120227486 | ELECTRONIC APPARATUS USE ENVIRONMENT DETECTING METHOD, ELECTRONIC APPARATUS PERFORMANCE OPTIMIZING METHOD AND ELECTRONIC APPARATUS - Apparatus and method use a vibrator and an accelerometer of electronic apparatus for detecting the use environment of the electronic apparatus, and according to the use environment a method and electronic apparatus are provided for optimizing the performance of the electronic apparatus according to the use environment of the electronic apparatus. The method for detecting use environment comprises: determining the basic parameters of the electronic apparatus; searching for the acceleration thresholds of the electronic apparatus according to the determined basic parameters of the electronic apparatus; and determining the use environment according to the detected acceleration of the electronic apparatus and the found acceleration thresholds of the electronic apparatus. The use environment of the electronic apparatus may be detected by the vibrator and accelerometer of the electronic apparatus, thereby optimizing the performance of the electronic apparatus according to the use environment. | 09-13-2012 |
20120231730 | MOBILE TERMINAL AND METHOD OF WRITE PROTECTION FOR MEMORY CARD IN THE MOBILE TERMINAL - A mobile terminal and method to write protect a memory card in the mobile terminal. The mobile terminal comprises a body, a battery and a battery cover. The battery cover has a short-circuit connecting member. A memory card socket accommodates a pluggable memory card. A writing control unit has input and output ports, and when the battery cover is jointed with the body, the input and output ports contact the short-circuit connecting member to form a short-circuit connection therebetween; the writing control unit detects whether the battery cover is removed by outputting a test signal from the output port and detecting for the test signal at the input port; if the battery cover is removed, the test signal is not detected at the input port and data is prohibited from being written into the memory card. | 09-13-2012 |
20120241304 | SLIDER AND ELECTRONIC APPARATUS CONTAINING THE SLIDER - A slider and an electronic apparatus containing the slider, the slider including upper and lower board bodies, a first metal part positioned on the upper board body and connected to a capacitive touch sensor, the capacitive touch sensor being arranged on the circuit board of an electronic apparatus containing the slider; and a second metal part positioned on the lower board body and connected to a ground end (terminal), the ground end being arranged on the circuit board of the electronic apparatus containing the slider; the first and second metal parts are respectively positioned at the same end of the upper board body and the lower board body, and the first and second metal parts constitute a capacitor, the capacitance of which provides for detecting the open mode and closed mode of the slider. | 09-27-2012 |
20120242399 | MOBILE TERMINAL AND METHOD OF WRITING PROTECTION FOR MEMORY CARD IN THE MOBILE TERMINAL - A mobile terminal and a method of writing protection for a memory card in the mobile terminal, the mobile terminal comprising a body, battery, and battery cover, at least part of the battery cover made of conductive material; the body comprising: a memory card socket configured to accommodate a pluggable memory card; at least one sensing member on a surface or internal of the body and spaced from the battery cover, and configured to face the part made of conductive material when the battery cover is closed; a capacitance sensor connected to the at least one sensing member and configured to sense capacitance between the sensing member and battery cover; and a write control unit configured to determine whether the battery cover is removed according to capacitance sensed by the capacitance sensor, and prohibit data being written into the memory card when the battery cover is removed. | 09-27-2012 |
20120254557 | MOBILE TERMINAL, MEMORY CARD SOCKET AND METHOD OF WRITING PROTECTION FOR MEMORY CARD IN THE MOBILE TERMINAL - The present invention provides a mobile terminal, a memory card socket and a method of writing protection for a memory card in the mobile terminal. The mobile terminal comprising a memory card socket accommodating a pluggable memory card, the memory card socket externally provided with a metal shielding structure; the mobile terminal further comprising: a touch capacitance sensor connected to the metal shielding structure of the memory card socket and configured to sense a capacitance via the metal shielding structure; and a write control unit configured to determine whether the metal shielding structure is touched by a finger based on the capacitance sensed by the touch capacitance sensor, and prohibit data being written into the memory card when it is determined that the metal shielding structure is touched by a finger. The present invention ensures that the data can be safely written into the memory card. | 10-04-2012 |
20120265950 | Storage Card Socket, Mobile Terminal and Method for Protecting the Storage Card - A storage card socket, mobile terminal and method for protecting the storage card, the storage card socket comprising: a first contact point on the base of the storage card socket; a second contact point on the base of the storage card socket, the second contact point electrically connected to the first contact point after the upper lid of the storage card socket is closed; and a guide slot on the base of the storage card socket, the guide slot being positioned at a side of a connecting part connecting the base and the upper lid, the connecting part being positioned in the guide slot so that the upper lid is slidable along the guide slot. | 10-18-2012 |
20120288066 | SCANNING DEVICE USING RADIATION BEAM FOR BACKSCATTER IMAGING AND METHOD THEREOF - Disclosed is a scanning device using radiation beam for backscatter imaging. The scanning device includes a radiation source; a stationary shield plate and a rotary shield body positioned respectively between the radiation source and the subject to be scanned, wherein the stationary shield plate is fixed relative to the radiation source, and the rotary shield body is rotatable relative to the stationary shield plate. The ray passing area permitting the rays from the radiation source to pass through the stationary shield plate is provided on the stationary shield plate, and ray incidence area and ray exit area are respectively provided on the rotary shield body. During the process of the rotating and scanning of the rotary shield body, the ray passing area of the stationary shield plate intersects consecutively with the ray incidence area and the ray exit area of the rotary shield body to form scanning collimation holes. Further, a scanning method using radiation beam for backscatter imaging is also provided. | 11-15-2012 |
20120306544 | DRIVING STRENGTH CONTROL APPARATUS, DRIVING STRENGTH CONTROL METHOD AND TERMINAL EQUIPMENT - The embodiments of the present invention provide a driving strength control apparatus and method and terminal equipment. The control apparatus comprises: a signal receiving unit to receive a test signal transmitted by a peripheral device; a signal sampling unit to sample the test signal received by the signal receiving unit to obtain a plurality of rising edges and falling edges of the test signal; an interval measuring unit to measure the time interval between a rising edge and a falling edge, or between a rising edge and another rising edge, or between a falling edge and another falling edge; and a controlling unit to adjust the driving strength imposed on the peripheral device according to the time interval. With the embodiments of the present invention, the driving strengths imposed on the peripheral device may be made identical, preventing signal deviation and improving the quality of compatibility. | 12-06-2012 |
20130017700 | CIRCUIT BOARD CONNECTOR AND METHOD FOR CONNECTING CIRCUIT BOARDAANM TIAN; XiyongAACI BeijingAACO CNAAGP TIAN; Xiyong Beijing CNAANM LI; LingchangAACI BeijingAACO CNAAGP LI; Lingchang Beijing CNAANM LIU; YinongAACI BeijingAACO CNAAGP LIU; Yinong Beijing CN - A circuit board connector and a method for connecting circuit board. The circuit board connector includes: a housing, including a left side wall and right side wall opposite each other and a bottom wall arranged between the left and right side walls, the bottom wall provided with a plurality of contact pins, and the left and right side walls and the bottom wall forming an accommodation space for accommodating the circuit board; a cover, one end being connected to the housing, so that the cover may be opened or closed relative to the housing; and a locking device arranged on the housing and cover to lock the cover when the cover is closed. Reliable connection of the circuit board can be realized, without a gasket or a film, and also the circuit board can be locked firmly, preventing the rebounding of the hinge of the connector. | 01-17-2013 |
20130027869 | CARD READER, ELECTRONIC APPARATUS AND PROTECTION METHOD FOR MEMORY CARD - The embodiments of the present invention provide a card reader, electronic apparatus and protection method for memory card. The card reader comprises: a card slot having an accommodation space for accommodating a memory card, with parallel guiding slots being arranged on the left side and right side walls of the card slot; and a cover arranged on the card slot and being slidable on the card slot via the guiding slots. With the embodiments of the present invention, the delay time for stopping the read-write protection may be increased, the memory card may be protected in time, and the back repair rate of the memory card may be reduce. | 01-31-2013 |
20130029535 | AUDIO JACK AND ELECTRONIC APPARATUS CONTAINING THE SAME - The present invention provides an audio jack and electronic apparatus containing the same. The audio jack includes a hollow insulated housing, wherein the insulated housing includes: a fixed portion and a rotating portion rotating relative to the fixed portion and on which at least two elastic terminals are arranged; and the at least two elastic terminals of the rotating portion being in contact with different pins of a printed circuit board of the audio jack respectively when the rotating portion is in a first position and rotates relative to the fixed portion to a second position. The audio jack and electronic apparatus containing the same of the present invention are applicable to the insertion of plugs of different specifications, increasing the range of application of the electronic apparatus on the premise of reducing the cost of the electronic apparatus. | 01-31-2013 |
20130035140 | APPARATUS AND METHOD FOR STATE DETECTION AND TERMINAL EQUIPMENT - The embodiments of the present invention provide an apparatus and method for state detection and terminal equipment. The apparatus for state detection includes: capacitive touch sensors arranged in the first cover of the terminal equipment a metal structure arranged in the second cover of the terminal equipment and grounded, the capacitive touch sensors being triggered by the metal structure, such that the capacitance of the capacitive touch sensors is changed and a state determiner to determine that the second cover is opened or closed relative to the first cover according to the changed capacitance of the capacitive touch sensors. The opening and closing of the terminal equipment may be detected without the participation of the user, thereby providing a better user experience with high precision of detection. | 02-07-2013 |
20130083946 | APPARATUS AND METHOD FOR SOUND CONTROL AND ELECTRONIC SERVICE - The embodiments of the present invention provide an apparatus and method for sound control and an electronic device, the apparatus for sound control including: contact keys arranged in the sound output region; capacitive touch sensors connected to the contact keys, the capacitance of the capacitive touch sensors being changed when the contact keys are contacted; and a sound controller for generating sound control signals according to the changed capacitance of the capacitive touch sensors, so as to control the sound of the loudspeaker. With the embodiments of the present invention, the integration of the design may be improved, space saving may be facilitated, and better user experiences may be provided. | 04-04-2013 |
20130127724 | FOLDING ELECTRONIC APPARATUS AND METHOD FOR DETECTING OPEN AND CLOSED MODES THEREOF - The embodiments of the present invention provide a folding electronic apparatus and a method for detecting open and closed modes thereof. The folding electronic apparatus includes a body and a cover, with a keyboard being disposed on the body and a capacitive touch screen being disposed on the cover. A plurality of metal detection points is disposed on the body. A sensor connected to the capacitive touch screen senses change of a capacitance value resulting from capacitive effect between the plurality of metal detection points and the capacitive touch screen, and determines open and closed modes of the folding electronic apparatus. The embodiments of the present invention detect open and closed modes of a folding electronic apparatus using a sensor connected to a capacitive touch screen by predefining a plurality of metal detection points on a keyboard or physical structure of the folding electronic apparatus. | 05-23-2013 |
20130127778 | KEY DEVICE AND ELECTRONIC EQUIPMENT - The embodiments of the present invention provide a key device and an electronic equipment, including a key body, and the key device further includes: one or more touch keys arranged on the key body, the touch keys being contacted such that the capacitance of a capacitive touch sensor is changed; a printed circuit board, with one side being arranged the touch keys, for inducing the change of the capacitance of the capacitive touch sensor, so as to generate a control signal; and a mechanical key arranged on the other side of the printed circuit board, when the key body is pressed, the mechanical key being squeezed to generate an electrical signal. With the embodiments of the present invention, space may be saved, and better experiences may be provided to the users. | 05-23-2013 |
20130162989 | Method for Automatically Calibrating a Raman Spectrum Detection System and Raman Spectrum Detection System - The present disclosure relates to a Raman spectrum detection system, which comprises a light source for emitting excitation light that excites a detected object to emit Raman light; an external light path system for irradiating light emitted from the light source on the detected object and collecting the Raman light emitted by the detected object; a light detection device for receiving the Raman light collected by the external light path system and detecting said Raman light to obtain spectrum data thereof; a control device for controlling the excitation light source to provide the excitation light, controlling the light detection device to detect the Raman light, receiving the spectrum data output from the light detection device, and analyzing said spectrum data to identify the detected object; and an automatic calibration device for holding the standard sample and for automatically calibrating the system. The present disclosure also relates to a method for detecting an object using the Raman spectrum detection system, and a method for automatically calibrating the Raman spectrum detection system. | 06-27-2013 |
20130209061 | MULTIMEDIA PLAYING CONTROL METHOD, PLAYING CONTROL MODULE AND PLAYING TERMINAL - The present invention provides a multimedia playing control method, playing control module and playing terminal. The method comprises: detecting a position indicated by a user on a speed bar displaying a playing speed of a multimedia file; and amplifying and displaying the time period to which the position corresponds by a predetermined amplifying parameter, such that the user selects a playing moment according to the amplified and displayed time period. With the embodiments of the present invention, a playing speed may be precisely allocated to a desired position, without being affected by the size of the display screen of the playing terminal, the size and playing time of the played multimedia file, the size of the speed bar, and the playing mode, and solve the technical problems existed in the prior art. | 08-15-2013 |
20130222514 | METHOD AND APPARATUS FOR SWITCHING TALKING MODES AUTOMATICALLY - Method and apparatus for switching talking mode automatically applicable to electronic equipment, which includes an accelerometer, proximity sensor and video camera. The method includes acquiring gravity information from the accelerometer during conversation between the electronic equipment and the other side of the conversation, and judging whether the electronic equipment is in a vertical state according to the gravity information; activating the video camera to take a capturing action if the electronic equipment is not in a vertical state, and acquiring distance information and/or image information, the distance information used for indicating distance to the captured object, and the image information used for indicating the captured object; and switching the talking mode to speakerphone mode if distance indicated by the distance information is greater than a first threshold value, and/or resolution of the image indicated by the image information is greater than a second threshold value. | 08-29-2013 |
20130313426 | SIGNAL EXTRACTION CIRCUITS AND METHODS FOR ION MOBILITY TUBE, AND ION MOBILITY DETECTORS - Embodiments of the present disclosure relate to substance detection technology, and to signal extraction circuits and methods for ion mobility tubes, and ion mobility detectors, which can solve the problem with the conventional technologies that it is difficult to design and manufacture the leadout circuit for the pulsed voltage on the Faraday plates. A signal extraction circuit for an ion mobility tube includes an DC-blocking module configured to remove a DC voltage contained in a voltage extracted, by a signal leadin terminal, from the Faraday plate, and to output, by a signal leadout terminal, a pulsed voltage contained in the voltage extracted from the Faraday plate. An ion mobility detector includes the signal extraction circuit for an ion mobility tube according to the present invention. A signal extraction method for an ion mobility tube includes extracting a voltage on a Faraday plate in the ion mobility tube, removing a DC voltage contained in the voltage extracted from the Faraday plate, and outputting a pulsed voltage contained in the voltage extracted from the Faraday plate. The present invention is used to extract a pulsed voltage from the Faraday plate. | 11-28-2013 |
20140061490 | BORON-COATED NEUTRON DETECTOR AND METHOD FOR MANUFACTURING THE SAME - A boron-coated neutron detector, comprising a cathode tube with a plurality of passages formed therein along its longitudinal direction, the inner wall of each passage being coated with boron material; an electrode wire serving as an anode and arranged longitudinally in each of the passages, the electrode wire adapted to be applied with high voltage; and an insulating end plate to which each end of the cathode tube is fixed, the electrode wire being fixed to the cathode tube via the insulating end plate. Preferably, the cathode tube is formed by jointing a plurality of boron-coated substrates. The boron-coated neutron detector increases the detection efficiency of the neutron detector, which may reach or even exceed the detection efficiency of the | 03-06-2014 |
20140185763 | INSPECTION SYSTEM AND INSPECTION METHOD - An inspection system included a ray source to emit a ray, a detector to receive the ray, a detection region for placing an object under inspection, and a moving device to move the ray source and the detector around the detection region. Conventional scanning blind zones such as both sides of a human body, both sides of arms and both sides of legs can be completely eliminated. In addition, it is not necessary for a human body under inspection to carry out an action such as turning around to change his or her posture. Therefore, ineffective time can be minimized in the entire detection and a passing rate of persons under inspection can be improved. Furthermore, an inspected person's mental feeling of being controlled due to change of posture can be greatly improved, and his or her mental discomfort and conflicted moods can be reduced. | 07-03-2014 |
20140185769 | BACK SCATTERNING INSPECTION SYSTEMS FOR HUMAN BODY - A human body back-scattering inspection system is disclosed. The system comprises a flying-spot forming unit configured to output beams of X-rays, a plurality of discrete detectors which are arranged vertically along a human body to be inspected, and a controlling unit coupled to the flying-spot forming unit and the plurality of detectors, and configured to generate a control signal to control the flying-spot forming unit and the plurality of detectors to perform a partition synchronous scan on the human body to be inspected vertically. The present disclosure utilizes the geometry property of the human body back-scattering inspection system, and proposes a multiple-point synchronous scan mechanism which largely accelerates the inspection of human body. | 07-03-2014 |
20140185772 | HUMAN BODY INSPECTION SYSTEM - The invention discloses a human body inspection system comprising: an X-rays source for emitting X-rays to a human body to be inspected; a modulation and collimation device for modulating and collimating the X-rays from the X-rays source; a detector that receives X-rays scattered from the human body to be inspected; a guiding rail forming an enclosed detection region, wherein the human body to be inspected is in the detection region, and the X-rays source, the modulation and collimation device and the detector are positioned in a same side relative to the human body, and the X-rays source, the modulation and collimation device and the detector together move along the guiding rail in whole so that the X-rays can scan all over the human body. | 07-03-2014 |
20140185773 | HUMAN BODY SECURITY INSPECTION SYSTEM - A human body security inspection system including a plurality of ray emitting-detecting modules, which are configured to emit X-rays to the object to be inspected and to receive X-rays scattered from the object to be inspected, wherein the ray emitting-detecting modules form an enclosed region with respect to the object to be inspected and security inspection is implemented on the object in the enclosed region. | 07-03-2014 |
20140209809 | RADIATION DETECTORS - The present disclosure provides a radiation detector, comprising: a semiconductor crystal for detecting radiation, the semiconductor crystal comprising a top surface, a bottom surface, and at least one side surface; at least one anode arranged on at least one of the top surface, the bottom surface, and the at least one side surface; and at least one cathode arranged on at least another one of the top surface, the bottom surface, and the at least one side surface, wherein the at least one anode each has a stripe shape, the at least one cathode each has a planar or curved shape, and the at least one cathode and the at least one anode extend in parallel with respect to each other to a length substantially equal to that of the anode. Such an electrode structure can improve energy resolution and detection efficiency of the radiation detector effectively. | 07-31-2014 |
20140299758 | CORONA DISCHARGING DEVICE AND ION MIGRATION SPECTROMETER HAVING SAME - The present invention provides a corona discharge device, comprising a first electrode including: a first substantially cylindrical inner chamber portion and a second substantially conical inner chamber portion in communication with the first inner chamber portion, wherein the second inner chamber portion has a cross sectional area that gradually enlarges in a direction away from the first inner chamber portion. The present invention also provides an ion mobility spectrometer comprising: an ionization region; and the corona discharge device disposed in the ionization region. With the above construction and structure, the ion mobility spectrometer of the present invention has the advantages that extraction of ions is facilitated and a life time of the corona electrode is lengthened. In addition, the focusing and storing electrode is used to effectively shield interference of a corona discharge pulse, and to push and focus sample ions. A designed voltage control solution is used to achieve mobility differentiating of ions, while a corona pulse is shielded to prevent variation in an ion quantity due to the corona pulse, thereby achieving an effect of stabilizing mobility spectrum lines. | 10-09-2014 |
20140314201 | METHODS AND APPARATUSES FOR MEASURING EFFECTIVE ATOMIC NUMBER OF AN OBJECT - Methods and apparatuses for measuring an effective atomic number of an object are disclosed. The apparatus includes: a ray source configured to product a first X-ray beam having a first energy and a second X-ray beam having a second energy; a Cherenkov detector configured to receive the first X-ray beam and the second X-ray beam that pass through an object under detection, and to generate a first detection value and a second detection value; and a data processing device configured to obtain an effective atomic number of the object based on the first detection value and the second detection value. The Cherenkov detector can eliminate disturbance of X-rays below certain energy threshold with respect to the object identification, and thus accuracy can be improved for object identification. | 10-23-2014 |
20140319337 | ASYMMETRIC FIELD ION MOBILITY SPECTROMETER - The present invention discloses an asymmetric field ion mobility spectrometer. It comprises an ionization source, for generating ions; an electrode plate; a plurality of electrode filaments, arranged in opposite to and spaced apart from the electrode plate by an analysis gap, wherein a high voltage of electrical field is applied between the electrode plate and the electrode filaments to form an ion migration area, the electrode filaments used to collect the ions that do not pass through the ion migration area; and a collection electrode, disposed at a rear end of the ion migration area, and collecting the ions that have passed through the ion migration area. The present asymmetric field ion mobility spectrometer is capable of improving accuracy of identifying peak positions of the ions, reducing scanning time of DC voltage and types of compensation voltage, thereby increasing ion detection efficiency. | 10-30-2014 |
20140319635 | SEMICONDUCTOR DETECTOR - The invention provides a semiconductor detector, and the semiconductor detector comprises a semiconductor crystal, a cathode, an anode and at least one ladder electrode; the semiconductor crystal comprises a top surface, a bottom surface and at least one side; the cathode, the anode and the ladder electrode are conductive thin films deposited on a surface of the semiconductor crystal; the cathode is disposed on the bottom surface of the semiconductor crystal, the anode is disposed on the top surface of the semiconductor crystal, the ladder electrode is disposed on the at least one side of the semiconductor crystal; and the ladder electrode comprises a plurality of sub-electrodes. As compared to the prior art, the semiconductor detector can improve the energy resolution. | 10-30-2014 |
20150030205 | HUMAN BODY SECURITY INSPECTION METHOD AND SYSTEM - The present invention provides a human body security inspection method and system. The method comprises: retrieving in real-time scanning row or column image data of a personal to be inspected; transmitting in real-time the image data to an algorithm processing module and processing these image data by the module; automatically recognizing a suspicious matter by a suspicious matter automatic target recognition technique, after retrieving an image data of an entire scanning image of the personal; any of the following three inspection modes is selected, so as to perform a further processing on basis of the recognition result of the suspicious matter, (1) in a manner of automatic target recognition technique, (2) in a combination manner of the automatic target recognition technique and a privacy protection image; and (3) a combination manner of the automatic target recognition technique, a privacy protection image and human intervention. | 01-29-2015 |
20150048251 | MILLIMETER WAVE HOLOGRAPHIC SCAN IMAGING APPARATUS FOR HUMAN BODY SECURITY INSPECTION - The present invention discloses a millimeter wave holographic scan imaging apparatus for inspecting a human body. The apparatus includes a first millimeter wave transceiver device ( | 02-19-2015 |
20150048868 | CIRCUITS FOR GENERATING SWEEP FREQUENCY SIGNAL - A circuit to generate a sweep frequency signal that includes a reference frequency source to generate a reference frequency signal, a first frequency combination circuit coupled to the reference frequency source, and operative to generate a sweep frequency signal in a first frequency band based on the reference frequency signal, a second frequency combination circuit coupled to the reference frequency source, and operative to generate a sweep frequency signal in a second frequency band different from the first frequency band based on the reference frequency signal, a multiple-level switch coupled to outputs of the first frequency combination circuit and the second frequency combination circuit, and a control circuit controlling the first and second frequency combination circuits and the multiple-level switch to output the sweep frequency signal in the first frequency band and the sweep frequency signal in the second frequency band at an output of the multiple-level switch alternately. | 02-19-2015 |
20150048964 | MILLIMETER WAVE THREE DIMENSIONAL HOLOGRAPHIC SCAN IMAGING APPARATUS AND INSPECTING METHOD THEREOF - A millimeter wave three dimensional holographic scan imaging apparatus and a method for inspecting an object to be inspected using the same are disclosed. The apparatus includes a millimeter wave transceiver module with a millimeter wave transceiver antenna array for transmitting and receiving a millimeter wave signal. The apparatus also includes a guide rail device, to which the millimeter wave transceiver module is connected in slidable form. The millimeter wave transceiver module is moveable along the guide rail device to perform a plane scan on an object to be inspected. A data processing device generates a millimeter wave holographic image from the plane scan. | 02-19-2015 |