1479results about "Nuclear radiation detection" patented technology

The invention relates to the technical field of material detection, and discloses a material multi-modal X-ray foreign matter detection method, which comprises the following steps of: acquiring a transmission gray-scale time sequence array and a scattered photon energy spectrum distribution matrix output by a multi-modal X-ray acquisition system, generating a composite characteristic body through cross-modal characteristic interactive coding, constructing a material-contour associated nodal topology network, and obtaining a material-contour associated nodal topology network; simulating a foreign matter feature conduction path and outputting a correlation confidence value set, performing space-time dimension mapping transformation to generate a foreign matter-detection coupling prediction curved surface, calculating a sensitivity adjustment factor and generating a standardized coupling coefficient thermodynamic cloud chart, extracting a detection quantitative index set and dynamically matching the detection quantitative index set with a preset reference range; and when the indexes exceed the boundaries, generating a regulation and control scheme. According to the method, the accuracy, reliability and real-time performance of foreign matter detection are improved, and the detection requirements of complex scenes can be met.

The invention provides a self-adaptive dual-energy pulse X-ray detection system and a detection method. The self-adaptive dual-energy pulse X-ray detection system comprises a dual-energy X-ray emission module, a pulse modulation and high-voltage power supply module, a detector array and a self-adaptive control system, wherein the dual-energy X-ray emission module is in signal connection with the pulse modulation and high-voltage power supply module; the detector array is positioned on the opposite side of a detected object; and the self-adaptive control system is in signal connection with the pulse modulation and high-voltage power supply module. The self-adaptive dual-energy pulse X-ray detection system and the self-adaptive dual-energy pulse X-ray detection method have high penetrating power, and the problems of fuzzy recognition and generation of image blind areas can be effectively avoided.

The invention relates to the technical field of X-ray detection, and discloses an X-ray detection method and detector for detecting various densities and materials, and the method comprises the steps: carrying out the penetration imaging of an X-ray beam through a double-layer TFT detector structure; forming a first common energy X-ray image on the first TFT imaging layer for X-rays penetrating through the detected object, and forming a first high-energy X-ray image filtered by the copper filter layer on the second TFT imaging layer; performing preprocessing to obtain a second ordinary energy X-ray image and a second high-energy X-ray image; performing dual-energy-domain feature extraction, and constructing an effective atomic number map and a material density map; and executing feature space clustering analysis and decision tree classification, and outputting a final detection result. According to the invention, the image information of different energy domains is effectively integrated, the recognition capability of a mixed material and a complex structure is enhanced, the service life of a TFT detector is prolonged, and the system operation cost is reduced.

Systems and methods for annotating, also known as tagging, visually identifiable objects using natural language (i.e. spoken voice) are provided. More specifically, but not exclusively, this disclosure relates to systems and methods for tagging identified objects related to underground utilities and assets, and communication systems. Once tagged, data representing identified objects can be stored, transmitted, and / or mapped. In an exemplary embodiment, a utility service worker or other personnel may walk or drive around an area of interest using utility locating equipment or systems to collect data. As data is being collected, the user may visually identify utility related or other items using a laser pointer, and then use their voice to tag items of interest. A headset including a microphone may be provided for capturing the user's voice. Hardware and / or software may be provided for processing tagged items, and relating them to a specific location, and / or utility asset.

The invention discloses a concept for improved position and orientation determination of a plurality of objects each marked with at least one optoelectronically detectable marker, in which holographic optical elements are introduced into two-dimensional flat markers, at which ambient light is reflected back with sufficiently high intensity even at high scattering angles relative to the surface normal of the two-dimensional flat markers.For this purpose, it is proposed to detect light reflected by holographic optical elements (HOE; 21, 22, 23) applied to the markers (20) in an optoelectronic sensor (32) and to generate a two-dimensional reflection image, and to detect, in an image processing device (34), on the basis of the spectrally resolved local intensity distribution of the two-dimensional reflection image detected by the optoelectronic sensor (32), differences between the reflection behavior of the optoelectronically detectable markers (20) of the current position and orientation of the plurality of objects (100; 200) and the reflection behavior of the optoelectronically detectable markers (20) in a reference configuration of the plurality of objects (100; 200), and to detect deviations in the overall configuration of the plurality of objects (100; 200) relative to the optoelectronic detection device (30) by evaluating the detected differences. determine.

The invention belongs to the technical field of food processing, and particularly relates to an X-ray intelligent foreign matter detection machine which comprises a detection box, an X-ray generator and an X-ray detector, and further comprises a feeding frame fixedly arranged on one side of the detection box, and a discharging opening is formed in one side of the top of the feeding frame; and the discharging frame is fixedly arranged on the other side of the detection box. The weight is accurately measured through the food weighing mechanism, so that the blowing dust removal strength is adjusted in a self-adaptive mode, the food packaging surface is effectively cleaned, and food is prevented from being damaged; meanwhile, the cooling mechanism monitors, regulates and controls the temperature in the detection box in real time, slows down aging of elements of the X-ray generator, reduces thermal noise of the detector and guarantees detection precision; moreover, the rotary detection mechanism is matched with rotary limiting to realize multi-angle detection, and foreign matter missing detection is prevented; in addition, the foreign matter marking mechanism and the alarm lamp can mark and prompt food with foreign matters in time, sorting treatment is facilitated, and the production efficiency and the product quality are improved.

The invention relates to a femtosecond gamma ray pulse generation device, which comprises a femtosecond order electron beam slice generation system, a cavity, a Compton scattering laser system and collimation equipment, and is characterized in that the femtosecond order electron beam slice generation system, the cavity and the collimation equipment are sequentially arranged along a first axis; the femtosecond-order electron beam slicing system is used for generating femtosecond-order electron beams with high-density slices, the cavity is used for providing an interaction cavity, and the Compton scattering laser system is used for generating pulse type laser. The pulse type laser and the electron beam with the high-density slices in the femtosecond order are subjected to Compton scattering in the interaction cavity so as to generate a gamma-ray pulse in the femtosecond order; the collimation device is used for carrying out collimation on the femtosecond order gamma ray pulse.

A method and systems for taking downhole measurements. The method may include selecting a pulsing scheme for taking one or more measurements using a pulsed neutron logging tool, selecting a neutron burst width for the pulsing scheme based at least in part on a neutron tube utilized by the pulsed neutron logging tool to form at least in part a neutron burst train, and selecting a decay window in which the one or more measurements are performed by the pulsed neutron logging tool. The method may further include selecting a starting time for a late gate in which the one or measurements are taken, disposing the pulsed neutron logging tool into a borehole, performing the neutron burst train with the pulsed neutron logging tool, and performing the one or more measurements with the pulsed neutron logging tool during the late gate.

This invention provides a baggage inspection device that can maintain or improve inspection throughput. The Baggage Inspection Device 100 according to an embodiment of this invention comprises Conveyor 20 that transports Baggage BA, Inspection Unit 10 that inspects Baggage BA, Curtain 31 that shields X-rays emitted from Inspection Unit 10, and Transportation Assist Mechanism 32 that assists transportation of Baggage BA by moving Curtain 31 that comes into contact with Baggage BA in a direction along Direction D1, i.e. the transport direction of Baggage BA.

An inspection portal includes a first x-ray source configured to emit a first beam, a first backscatter detector configured to detect backscatter from the first beam, a second x-ray source configured to emit a second beam, a second backscatter detector configured to detect backscatter from the second beam, and at least one first collimator and at least one second collimator, each oriented to detect backscatter from the associated beam and to block scatter from the other beam. The first and second backscatter detectors are configured to weight signals acquired using each of their detector element based on the first and second beams. The first backscatter detector is configured to use signal processing techniques to mitigate crosstalk due to scatter from the second beam, and the second backscatter detector is configured to use the signal processing techniques to mitigate crosstalk due to scatter from the first beam.

The invention belongs to the field of geophysical exploration, and particularly discloses a construction method and a layering method of a logging curve automatic layering prediction model. The model construction method comprises the following steps: acquiring and preprocessing logging curve data; additional features of the preprocessed logging curve data are extracted, the additional features are used for reflecting variation trends and fluctuation degrees of a logging curve on different scales, and the variation trends comprise an average value, a variation coefficient, a trend angle and multi-scale wavelet fluctuation features; splicing the preprocessed logging curve data and the additional features to construct a data set, then labeling stratum boundary points for the data set through point-level dichotomy labels, and dividing the data set into a training set and a test set; and constructing a deep learning network model of multi-scale feature fusion, and performing multi-round training and verification on the deep learning network model through the data set to obtain a hierarchical prediction model. According to the invention, accurate prediction of the stratum boundary can be realized.

The invention discloses a saturation multi-probe instrument nuclear calculation and processing automation method, a saturation multi-probe instrument nuclear calculation and processing automation system, a saturation multi-probe instrument nuclear calculation and processing automation terminal and a saturation multi-probe instrument nuclear calculation and processing automation medium, and belongs to the technical field of nuclear logging in oil-gas exploration. Data generated by the model is extracted, converted and integrated into a simulation spectrum database, and saturation parameters of the simulation data are automatically generated into the simulation spectrum database; meanwhile, saturation actual measurement logging data are preprocessed, saturation parameter results are automatically calculated, the water-containing saturation, the gas-containing saturation and the oil-containing saturation under each depth are solved, and the whole system basically achieves the automatic processing flow; according to the method, the dependence on manual processing is reduced, the consumption of human resources is reduced, the influence of human subjective judgment on results is reduced, the consistency of the results in the oil-gas exploration field is improved, important saturation parameters for oil-gas exploration are generated in batches, and the intelligent level in the oil-gas field is improved.

The invention provides an electric logging data normalization processing method and equipment based on X-ray diffraction (XRD) mineral constraint, and belongs to the field of petroleum logging engineering.The method comprises the steps that test data of mineral composition parameters and cable logging data of rock physical property parameters are obtained, and the mineral composition parameters at least comprise rock mineral composition obtained through X-ray diffraction testing; based on the test data of the mineral composition parameters, determining calculated values of the rock physical property parameters by utilizing a volume summation method; judging whether the calculated value of the rock physical property parameter is completely matched with the cable logging data of the rock physical property parameter or not; if the judgment result is incomplete matching, performing normalization processing on the cable logging data of the rock physical property parameters based on the calculated values of the rock physical property parameters; otherwise, the normalization processing is not carried out. Through the method provided by the invention, all system errors of the cable test data can be reduced, so that the cable logging information can more accurately reflect the physical properties of underground rocks.

The invention belongs to the technical field of muon detection, and particularly relates to an underwater object muon detection method and system. An underwater object muon detection method comprises the following steps: S1, determining an underwater detection area, and arranging a plurality of groups of muon detection modules underwater; s2, collecting muon signals reaching each group of muon detection modules in real time; and S3, according to the underwater setting mode of the muon detection modules and muon signal changes corresponding to each group of muon detection modules, determining whether the object is located in the underwater detection area, and determining the motion state and the motion trail of the object located in the underwater detection area. The underwater object can be efficiently and accurately detected under the condition that the position of the underwater detection device is not exposed.

The invention relates to the technical field of cable logging, and particularly discloses a mineral component and content testing device and method suitable for a uranium-bearing reservoir, and the device comprises a cable logging system, a logging depth calibration system and a time synchronization system, the logging tool assembly comprises a spectral logging tool, a natural gamma-ray spectrum logging tool, an epithermal neutron logging tool and a neutron capture gamma-ray spectrum logging tool. The method comprises the steps of combining a logging tool assembly and a cable logging system, configuring a logging depth calibration system, configuring a time synchronization system, carrying out PTP time synchronization on the cable logging system and the logging depth calibration system, collecting original logging time and original logging data, carrying out time resampling and depth correction on the original logging data, and carrying out time synchronization on the logging depth calibration system and the cable logging system. And resampling the logging data according to the logging depth and time to divide a stratum structure. According to the method, acquisition and data fusion of the mineral components, the radioactive element content and the porosity characteristics of the stratum around the well can be realized, and the exploration precision, efficiency and evaluation accuracy are improved.

The invention discloses an azimuth gamma testing device and application, and belongs to the technical field of oil and gas logging equipment, the testing device comprises a PC, a rotating table, a rotating table motor, a motor driver, a rotating speed operator, a conductive slip ring and a stabilized voltage supply, the rotating table is sleeved with a rotating disc, and the rotating disc is fixedly connected with a laser; a dial is fixedly connected to the outer circumference of the rotating disc, one end of the rotating table is connected with the rotating table motor, the other end of the rotating table is connected with the conductive slip ring, the conductive slip ring is electrically connected with the azimuth gamma instrument to be measured, the azimuth gamma instrument to be measured is electrically connected with the stabilized voltage supply and the PC, and the rotating speed operator is electrically connected with the motor driver. The motor driver is connected with the rotary table motor, a photoelectric sensor is fixedly connected to the rotary table, and the photoelectric sensor is electrically connected with the azimuth gamma instrument to be detected. According to the invention, double evaluation of the azimuth measurement precision and the pulse counting time correctness of the azimuth gamma instrument can be accurately checked.

It is therefore the objective of the present invention to provide a system and a method for 2D and 3D density imaging using atmospheric ( cosmic) particles, in particular muons, that offer a wide range of detection abilities. This objective is achieved according to the present invention by a detection system for 2D and 3D density imaging of an object using atmospheric (cosmic) particles, in particular muons, penetrating said object, comprising the following components : i ) a particle detection subsystem ( PDS ) comprising a particle detection apparatus; said particle detection apparatus comprising a plurality of monolithic active semiconductor diode detection layers, preferably a plurality of depleted monolithi active semiconductor diode detection layers, said layers extending along a detection axis that corresponds to an axis of interest in terms of the direction of incoming particles after the penetration of the object; and ii ) an evaluation subsystem being enabled to determine the special and temporal detection of the collision events of the particles within the various (depleted) monolithic active semiconductor diode detection layers thereby enabling the evaluation subsystem to determine the direction and the time of the incoming particles. Therefore, the present invention provides for the novel use of semiconductor (D) MAPS in a very high resolution and simplified ( integrated) muon radiography system. Multiple layers of semiconductor pixel or strip detectors are combined to construct a low-power portable muon radiography system. The various monolithic semiconductor diode layers of a semiconductor detector allow for reconstruction of the particle trajectories and use the angular information to measure the amount of matter traversed by particles coming from different angles.

Provided is a CT device, being related to the technical field of radiation scanning. The CT device comprises a rack; multiple supporting apparatuses arranged on the rack; a rotatable portion, the rotatable portion being able to rotate around a rotation axis when driven by a driving wheel, and the rotatable portion being jointly supported by the multiple supporting apparatuses during the rotation process; a scanning apparatus arranged on the rotatable portion, the scanning apparatus being used for scanning an object to be examined; an axial limiting mechanism comprising a first pressing roller set and a second pressing roller set, wherein the first pressing roller set and the second pressing roller set are separately arranged on the end faces on two sides of the rotatable portion in the direction of the rotation axis; the first pressing roller set and the second pressing roller set each comprise n pressing rollers, n being an integer larger than 3, and at least a part of the outer circumferential face of each pressing roller is in contact with the end face of the rotatable portion so as to limit the movement of the rotatable portion in the direction of the rotation axis.

A system for inspecting an object, includes: a source of X-ray radiation; a horizontal array of detectors, wherein the source and the array of detectors are positioned substantially on a first plane; a platform configured to rotate as well as translate in a vertical trajectory, wherein the platform is positioned on a second plane between the source and the array of detectors, and wherein the object is disposed on the platform; and a computing device configured to: cause the source to fire a substantially horizontal fan beam in a third plane, wherein the third plane is above a top of the object; acquire calibration data from the array of detectors while the third plane is above the top of the object; cause the platform to simultaneously rotate and raise the object vertically upwards; acquire scan data of the object; and generate a three dimensional scan image of the object.

The invention discloses a compact high-energy gamma generator for special nuclear material checking and a checking method.The gamma generator comprises a shell and an ion source, the shell is internally provided with a high-pressure vacuum cavity, the ion source is arranged at the left end of the high-pressure vacuum cavity, the right end of the high-pressure vacuum cavity is provided with a high-pressure connector system, and the left end of the high-pressure connector system is connected with a leading-out accelerating electrode; a target holder is arranged in the extraction accelerating electrode, and a boron target sheet is mounted on the target holder; negative high voltage is fed into the extraction accelerating electrode through the high-voltage connector system, an electric field is formed between the extraction accelerating electrode and the anode of the ion source, the proton beam is extracted and accelerated by the electric field and then bombarded on the boron target sheet, 11B (p, gamma) 12C resonance radiation capture reaction is carried out, and high-energy gamma rays are released; the gamma ray and the special nuclear material are subjected to a photofission reaction to emit instant neutrons and delayed neutrons, and the detection of the special nuclear material is realized by measuring the instant neutrons and the delayed neutrons. The device is compact in structure, high in detection sensitivity, short in detection time, low in interference and long in service life, and has very high application value.

The invention provides a conveying device which defines a conveying channel in the first direction and comprises a supporting frame, the supporting frame is provided with a supporting face extending in the first direction, the supporting face is used for supporting conveyed objects in the supporting direction, and in the second direction, the areas, close to the two sides, relative to the supporting face, the area, close to the center line, of the supporting face is recessed in the opposite direction of the supporting direction. And a plurality of flexible members supported by the support surface and movable around an outer periphery of the support frame. A plurality of flexible members extend on the support surface in a first direction and are movable in the first direction. A plurality of steering wheels are arranged on the end faces of the two ends of the supporting frame respectively, and each steering wheel guides one flexible piece to leave the supporting face in the opposite direction of the normal direction of the supporting face and advance along the end faces of the supporting frame. The invention further provides inspection equipment.

The techniques as described herein enhance the accuracy and precision of mineralogy analysis in elemental spectroscopy logging by utilizing oxide standards and / or rock-forming mineral compounds as reference materials that provide more representative and realistic signatures of geological formations. A method comprises logging a wellbore with a tool and fitting reference spectra from oxide compounds and / or rock-forming mineral compounds against measured gamma spectra obtained with the tool, to characterize a subterranean formation that the wellbore extends through.

The invention discloses a coal mine goaf ignition area detection method, which belongs to the field of coal mine safety, and comprises the following steps: S1, delimiting a detection area; s2, delimiting a target measuring point; s3, defining a reference measuring point; s4, calibrating coordinate information of the measuring points; s5, measuring the radon value of the measuring point; radon value measurement is carried out on each reference measurement point, and an average value is taken as a local radon value reference value and is recorded as K; a radon measuring instrument is adopted to measure radon values of all the target measuring points, the radon values are recorded as L, and coordinate information of all the target measuring points and a corresponding radon value data table are drawn; s6, defining a fire area detection range; importing the data table into drawing software, generating a radon value contour map, and dividing the radon value contour map into three grades of fire areas according to different radon value intervals, namely an I area and an extremely easy fire area, L being greater than 5K; in the second zone, L is greater than or equal to 2K and less than or equal to 5K in a medium ignition zone; and the third area is a difficult-to-ignite area, and L is less than 2K. According to the method, the radon value abnormal region is accurately delimited through the radon value contour map, and a basis is provided for accurate positioning of a goaf fire source.

The invention provides radiation imaging equipment, CT imaging equipment, a radiation imaging method and a CT imaging method. A radiation imaging device includes a radiation source, a detector, and at least one grating disposed between an inspection channel defined by the radiation source and the detector between the radiation source and the detector. And the grating only shields one part of the radiation beam, so that one part of the radiation beam passes through the grating and then is received by the detector.

Disclosed herein are methods and system for determining an elemental composition of a downhole formation using neutron-induced gamma ray spectroscopy and doping the borehole fluid with a neutron absorber to remove at least part of the borehole thermal neutron flux before it can capture borehole nuclei and emit gamma rays within a spectral range of interest. For example, a method for determining the elemental composition includes adding a dopant to a borehole fluid, wherein the dopant absorbs thermal neutrons in the borehole, lowering a logging tool comprising a gamma ray spectrometer, emitting neutrons into a downhole environment, generating neutron-induced gamma rays comprising borehole gamma rays and formation gamma rays, detecting gamma rays from the downhole formation, and extracting the elemental composition of the downhole formation. The dopant may not emit gamma rays above 0.5 MeV or their peaks background should be predictable and / or consistent to be removed during data processing.

The invention discloses a muon track reconstruction method and imaging method based on a muon detector, and the method comprises the following steps: S1, according to the numbers of a first scintillator, a second scintillator and a third scintillator hit by the muon in any muon breakdown event, determining the number of the first scintillator, the number of the second scintillator and the number of the third scintillator; determining azimuth angles of the first scintillator, the second scintillator and the third scintillator hit by the muon; s2, according to the azimuth angle of the first scintillator hit by the muon, the x-axis coordinate value and the y-axis coordinate value of the incidence point and the emergence point of the muon are determined; according to the azimuth angle of the second scintillator hit by the muon and the azimuth angle of the third scintillator hit by the muon, respectively determining z-axis coordinate values of an incidence point and an emergence point of the muon; and S3, determining the track of the muon according to the x-axis coordinate value, the y-axis coordinate value and the z-axis coordinate value of the incidence point and the emergence point of the muon. Compared with the prior art, the method has the advantages that the accuracy of z-axis positioning is remarkably improved while high detection efficiency is kept, so that the accuracy of muon track reconstruction and ore body imaging is improved.

The invention provides a dual-energy fusion imaging and target identification method and system, and relates to the technical field of X-ray detection, and the method comprises the steps: carrying out the low-energy scanning of a detected object, and obtaining a low-energy image; performing high-energy scanning on a first local area, which needs to be subjected to high-energy scanning, on the measured object reflected by the low-energy image to obtain a high-energy image; fusing the low-energy image and the high-energy image to obtain a fused image; and performing suspicious target identification on the fused image to obtain an identification result, and outputting the identification result. According to the invention, a two-stage identification scheme is adopted. In the first stage, candidate regions are generated on a low-energy / fused image with a lower decision threshold; in the second level, fine detection and decision-making alarm are carried out on the fused image cutting piece of the candidate area with a high judgment threshold value, complementary scanning is triggered in cooperation with quality scoring and saturation pixel rate gating, and missed detection is reduced.

Embodiments of a method, system and machine-readable medium for generating a summary of drilling and operation reports based on a user prompt are disclosed herein. In one embodiment, a method comprises receiving a user prompt that was parsed by a natural language processor; generating a first summary of a plurality of drilling reports for at least one wellbore based on a report repository created from the plurality of drilling reports from at least one wellbore; indicating a sentiment score of the first summary; and generating a final summary based on the first summary and the user prompt.

Described herein are systems and techniques for improving the accuracy of computer models that determine properties of subterranean rock formations. Such systems and methods may perform multiple sets of calculations using data collected by different types of sensing devices that may be deployed in a wellbore. For example, a first set of inversions may be made on data collected by an electromagnetic (EM) sensing device and a second set of inversions may be made using EM data and data collected by a gamma ray (GR) sensing device. Such methods may be useful when making determinations regarding subterranean features that include laminated structures. For example, when rock structures include layers of sand and layers of shale.