75results about "Geological detection using milimetre waves" patented technology

Imaging systems and associated methods are described. According to one aspect, an imaging system includes an antenna array having transmit and receive antennas, the transmit antennas emit electromagnetic energy from a plurality of different positions about a target imaging volume and the receive antennas receive reflections of the electromagnetic energy at the different positions, a transceiver configured to control the emission of the electromagnetic energy and to generate radar data that is indicative of the reflections of the electromagnetic energy received via the receive antennas; and processing circuitry configured to focus the radar data to provide first focused data in a first dimension, to focus the radar data in a second dimension to provide second focused data, and use the second focused data to focus the radar data in a third dimension to provide third focused data comprising an image of the target imaging volume.

There is provided an object scanning apparatus. The object scanning apparatus may include a THz source emitting a THz beam; an optical system for directing the THz beam; a zone for inspecting objects wherein the optical beam interacts with the object; a motion device for changing the spatial or temporal interaction of the object and optical beam; at least one transducer, the at least one transducer including an imaging transducer for converting the optical beam energy after interaction with the object to an electronic image; and a processor for performing processing of the image for use in characterization of the object or its interior contents or composition.

The invention discloses an urban rail transit security check system, and the system comprises a passenger flow dynamics prediction module which constructs a modified Navier-Stokes equation passenger flow model based on the passenger flow pressure distribution and a motion vector field, and outputs a congestion entropy value and a risk particle flow; the adaptive millimeter wave scanning array switches a mobile focusing scanning mode or a wide-area screening mode according to double thresholds of risk particle flow intensity and congestion entropy, and the wide-area screening mode generates a basic threat index and marks a to-be-rechecked target; the feature analysis module generates a real-time threat level through contour feature comparison in a mobile focusing mode, and starts lightweight analysis on a to-be-rechecked target in a wide-domain mode to generate a threat assessment report; the immune decision-making center fuses multi-source data and dynamically generates a decision-making antibody through a clone selection algorithm, and a channel topology instruction contained in the decision-making antibody is executed according to a rule. According to the invention, through dynamic scanning decision and intelligent channel regulation and control, collaborative optimization of security check efficiency and security of a large passenger flow scene is realized.

The invention relates to the technical field of remote sensing prospecting, and discloses a uranium-copper multi-metal remote sensing prospecting method which comprises the following steps: S1, data acquisition and preprocessing; s2, alteration information is extracted; s3, multi-source information comprehensive analysis and prospecting prediction; s4, alteration abnormity verification is carried out; and S5, delineating the prospecting target area. According to the method, vegetation spectrum interference is stripped by carrying out principal component analysis on visible light-short wave infrared of a remote sensing image, weak iron staining and hydroxyl alteration signals are extracted, a geological and remote sensing coupling technology is carried out, alteration anomaly is superposed with a geological map, geochemical data and a construction interpretation result, a comprehensive remote sensing anomaly map is obtained, and the comprehensive remote sensing anomaly map is obtained. According to the method, the multi-parameter grading model GGS is established, and the target region is graded based on the multi-parameter grading model GGS, so that the probability of missed judgment of the target region is reduced.

A substrate edge detection system including a substrate material having the substrate edge with a surface; a coating disposed on the surface of the substrate edge; a probe in operative communication with the coating and the substrate edge; and a controller in operative communication with the probe.

The invention relates to a railway yard foreign matter intrusion detection system and method based on infrared thermal imaging. The system comprises an intelligent scheduling system which is used for obtaining route information matched with an operation task under the condition that the railway yard has the operation task; the intelligent vehicle-mounted system is used for detecting a locomotive position matched with the route information; the foreign matter detection system is used for determining a driving front limit area of the locomotive based on the route information and the position of the locomotive and acquiring an infrared thermal imaging image corresponding to the driving front limit area; and sending alarm information to an intelligent vehicle-mounted system under the condition of determining that foreign matters exist in the driving front limit area based on the infrared thermal imaging image, so that the intelligent vehicle-mounted system controls the state of the locomotive based on the alarm information. By adopting the system provided by the invention, the foreign matter detection accuracy of the railway yard can be improved.

Provided is a method for identifying and monitoring a water-conducting path of a water inrush source based on a similarity simulation test. The method includes: collecting mining area data, determining lithology and a laying thickness of each rock stratum in a mining area, and performing similar material proportioning for the determined lithology of each rock stratum; and using an exothermic material as a layered material for the similarity simulation test. According to the method for identifying and monitoring a water-conducting path of a water inrush source based on a similarity simulation test, the exothermic material is used in the similarity simulation test, to enhance a temperature response capability of various rock strata in a test environment. Subtle temperature changes in the rock strata can be reflected more accurately in a water inrush process, and therefore, monitoring precision is improved.

A millimeter wave (MMW) display arrangement is envisioned to comprise a MMW camera that has an array of single pixel MMW detectors that capture MMWs and pipe MMW intensity data, of the captured MMWs, to a display screen where an MMW picture is assembled from a plurality of MMW sub-images from different portions of a scene scanned by the MMW camera. Each of the MMW sub-images comprise a plurality of contrast cells each of which are produced from a corresponding single pixel MMW detector. The MMW camera constructs the MMW picture by changing perspectives of the scene by way of either moving the camera or by shifting positions of a mirror between the camera and scene.

The present invention relates to the technical field of mine water hazard prevention and control, and discloses a method for identifying and monitoring the source and rise path of water in sudden water disasters based on similar simulation tests. The method comprises: collecting mining area data, determining the lithology and paving thickness of each rock layer in the mining area, and proportioning similar materials for each determined rock layer; and using exothermic materials as layering materials in the similar simulation tests. The method, based on similar simulation tests, enhances the responsiveness of each rock layer to temperature changes in the experimental environment by using exothermic materials in the similar simulation tests, and can more accurately reflect subtle changes in rock layer temperature during the water inrush process, thereby improving monitoring accuracy. During the water inrush monitoring process, an infrared thermal imager is used to capture real-time thermal images, which can display the real-time temperature distribution during mining, thereby reflecting the dynamic situation of the water inrush, including the temperature anomaly areas and the preliminary outline of the water inrush path.

The invention relates to a system for identifying the presence of a foreign body (51) in a flowable medium in a pipeline (100). The system comprises a pipeline having a line inlet section (1) and an upset section (3) and also comprises a first transmitting / receiving unit (11) for the line inlet section and a second transmitting / receiving unit (12) for the line outlet section (2) and a superordinate unit (10), which system is designed to ascertain the presence of a foreign body (51) in the medium on the basis of at least one comparison between the mean permittivity (epsilon_m,3) in the upset section (3) and the mean permittivity (epsilon_m,1) in the line inlet section (1).

The application discloses a security check image acquisition method and device, a security check system and a storage medium, relates to the field of active millimeter wave human body security check technology, and can acquire high-quality millimeter wave human body security check images in real time. The method comprises the following steps: constructing target space distribution information of a target object surface contour according to distance information of a plurality of reflection points obtained by detecting the target object by using a ranging sensor; wherein the plurality of reflection points comprise points on the target object surface; determining a target amplitude value of a target position point in the target space distribution information according to echo signals obtained by detecting the target object by using a millimeter wave scanning array; the target position point is a point in a two-dimensional plane parallel to a scanning plane of the millimeter wave scanning array; the target amplitude value is used for representing scattering intensity of the target position point to electromagnetic waves emitted by the millimeter wave scanning array; and determining a two-dimensional image of the target object according to the target space distribution information and the target amplitude value.

The invention provides a coal mine millimeter wave fusion uniqueness detection method and device, and the method comprises the steps: obtaining the three-dimensional point cloud data of a target object when the target object reaches a coal mine wellhead; when the three-dimensional point cloud data of the target object is obtained, obtaining of identity verification data of the target object is triggered, and the identity verification data comprises biological characteristic information and intelligent card information; determining a contraband detection result according to the three-dimensional point cloud data; determining an identity verification result according to the biological characteristic information and the intelligent card information; and determining a coal mine well entering detection result according to the contraband detection result and the identity verification result. By implementing the method disclosed by the invention, the safety and reliability of coal mine well entering detection can be improved, comprehensive automatic detection is realized, and the degree of dependence on manual detection is effectively reduced.

A multi-lane elevated body temperature preventative scanning solution using GigE vision and tracking. This multi-lane solution is used to scan and track movement of people through an elevated body temperature scanning solution. When a person enters the frame, their identity (ID) is tracked within the field of view of the thermal camera in a designated scanning area from there it is monitored through the entry and exit of a premise to acquire a preventative temperature screening. Multiple machine learning and tracking routines are used together in this innovative offering.

A microwave barrier system is provided, including: a first microwave barrier including a first microwave transmitter and receiver, the first transmitter including an electrically tunable microwave generator and being configured to be operated at a selectable microwave frequency; and a second microwave barrier including a second microwave transmitter and receiver, the second transmitter including an electrically tunable microwave generator and being configured to be operated at a selectable microwave frequency, the system being configured to determine microwave operating channels in an available frequency range for microwave barriers by one of the receivers, and to assign a respective microwave operating channel to at least one of the barriers to reduce mutual interference between the barriers, the barriers further including respective communication devices to signal-couple the respective receiver with the respective transmitter to transmit a microwave operating channel for operation of the barriers from the receivers to the transmitters.

The disclosed MMW wave sensing camera calibration arrangement that generally includes a millimeter wave camera that uses an energy emission calibration panel as a calibration standard. The MMW camera is positioned opposite the calibration panel in the MMW camera's field-of-view. The calibration panel is held at a constant temperature to provide a standard emission of millimeter waves that is sensed by an MMW sensor to set or otherwise calibrate the MMW camera to a baseline emissivity value corresponding to the panel. The MMW camera is linked to a microprocessor and non-transient computer memory containing a calibration routine that is configured to reset the baseline only when nothing obstructs the calibration panel's field-of-view. A visual display is linked to the MMW camera and configured to display an MMW signature of a metal object that is disposed on a person's body when the person's body is in the field-of-view, the metal object concealed by clothing worn over the person's body.

The present disclosure provides a millimeter-wave human body security inspection method and system based on double postures. The method includes: using a millimeter-wave human body security inspection device to scan and inspect the body of an inspected person in a first posture to obtain a first millimeter-wave human body image; using the millimeter-wave human body security inspection device to scan and inspect the body of the same inspected person in a second posture to obtain a second millimeter-wave human body image, where the second posture is different from the first posture; and determining whether the inspected person is carrying contraband based on at least both the first millimeter-wave human body image and the second millimeter-wave human body image.

A method for inspecting an individual using a dual-technology detection system having: a first mode of operation comprising the implementation of a first detection technology; a second mode of operation comprising the implementation of a second detection technology distinct from the first detection technology; and a third mode of operation comprising the absence of detection by means of the first and second technologies; the inspection method comprising: - the inspection (S2) of the individual according to the first mode of operation and the second mode of operation when the individual belongs to a first category; and - the inspection (S3) of the individual according to the first or second mode of operation when the individual belongs to a second category; and - the inspection (S4) of the individual according to the third mode of operation when the individual belongs to a third category.Figure for the summary: Fig. 4.

There is provided an object scanning apparatus. The object scanning apparatus may include a THz source emitting a THz beam; an optical system for directing the THz beam; a zone for inspecting objects wherein the optical beam interacts with the object; a motion device for changing the spatial or temporal interaction of the object and optical beam; at least one transducer, the at least one transducer including an imaging transducer for converting the optical beam energy after interaction with the object to an electronic image; and a processor for performing processing of the image for use in characterization of the object or its interior contents or composition.

The present application relates to a three-dimensional imaging method and apparatus, and a 3D imaging device. The method comprises generating 3D image information by capturing a 3D capture area containing a detected object using a depth camera; extracting a mask of the detected object from the 3D image information; determining an imaging area associated with the detected object based on the mask of the detected object; collecting data from a holographic data collection area containing the detected object by a holographic data collection device, generating holographic data; and performing image reconstruction on the imaging area based on the holographic data.

Imaging systems and associated methods are described. According to one aspect, an imaging system includes an antenna array having transmit and receive antennas, the transmit antennas emit electromagnetic energy from a plurality of different positions about a target imaging volume and the receive antennas receive reflections of the electromagnetic energy at the different positions, a transceiver configured to control the emission of the electromagnetic energy and to generate radar data that is indicative of the reflections of the electromagnetic energy received via the receive antennas; and processing circuitry configured to focus the radar data to provide first focused data in a first dimension, to focus the radar data in a second dimension to provide second focused data, and use the second focused data to focus the radar data in a third dimension to provide third focused data comprising an image of the target imaging volume.

The invention relates to living body detection equipment. The living body detection equipment comprises a vibration transmission device and a detection device which are arranged in sequence, the vibration conveying device comprises a rack, a vibration device, a lifting device and a first conveying device, the vibration device comprises a vibration block and a vibration generating device, the vibration block is arranged between the first conveying device and ascends or descends under the action of the lifting device, and the vibration generating device is used for driving the vibration block to vibrate. The detection device comprises a detection cover and a third conveying device, the detection cover is arranged above the third conveying device, and living body detection sensors are arranged on the two side walls of the detection cover in a staggered mode. The vibration device can stimulate a living body to move, and the risk of missing detection is reduced; the queuing device can stably convey parcels or luggage to the detection device in sequence; millimeter wave radars arranged in a staggered mode of the detection device can comprehensively scan articles, living bodies in various luggage packages are accurately locked, and the detection accuracy is remarkably improved.

Imaging systems and associated methods are described. According to one aspect, an imaging system includes an antenna array having transmit and receive antennas, the transmit antennas emit electromagnetic energy from a plurality of different positions about a target imaging volume and the receive antennas receive reflections of the electromagnetic energy at the different positions, a transceiver configured to control the emission of the electromagnetic energy and to generate radar data that is indicative of the reflections of the electromagnetic energy received via the receive antennas; and processing circuitry configured to focus the radar data to provide first focused data in a first dimension, to focus the radar data in a second dimension to provide second focused data, and use the second focused data to focus the radar data in a third dimension to provide third focused data comprising an image of the target imaging volume.

The disclosed handheld camera device is a combination digital optical and millimeter wavelength (MMW) camera. In contrast to an optical camera, the MMW camera detects frequencies between 3-300 GHz making the MMW camera especially good at seeing metallic objects under garments, such as concealed weapons on a person or in a bag. The MMW camera can be arranged to point in the same field-of-view as the optical camera so that when an MMW image is taken it is automatically framed within the optical camera field-of-view. In certain configurations, the MMW camera takes a plurality of MMW images defined within an MMW field-of-view. In the case where the MMW field-of-view is smaller than the optical camera field-of-view, the multiple MMW images can be stitched together and overlaid on the optical image of the same scene to show a metallic object superimposed over a subject of interest.

The invention relates to the related technical field of detection, and discloses a cordyceps sinensis nondestructive detection positioning device, which comprises a detection rod and a detection unit arranged at the end part of the detection rod, the detection unit comprises a signal acquisition module and a data processing module, and a dry type ink jet device is arranged in the detection rod. The dry type ink jet device comprises a negative ink powder box, high-frequency oscillation plates and an airflow guide part, the negative ink powder box is provided with a center cavity, the wall body of the negative ink powder box is provided with an ink storage cavity for containing dry type ink powder, the multiple high-frequency oscillation plates are distributed on the airflow guide part in a surrounding mode, and material taking gaps are formed between the high-frequency oscillation plates and the inner wall of the negative ink powder box. A three-level powdered ink mixing technology is adopted, environmental limitation of plateau areas is broken through, firstly, powder is accurately taken through an electric field, powdered ink is driven to pass through a material taking gap, and the powder taking efficiency is high; secondly, high-frequency signals pass through the piezoelectric layer to atomize the powdered ink, finally, negative pressure is generated in a narrow flow channel of the middle cylinder, and the powdered ink-air ratio is optimized to be in a reasonable range.

A millimeter wave (MMW) display arrangement is envisioned to comprise a MMW camera that has an array of single pixel MMW detectors that capture MMWs and pipe MMW intensity data, of the captured MMWs, to a display screen where an MMW picture is assembled from a plurality of MMW sub-images from different portions of a scene scanned by the MMW camera. Each of the MMW sub-images comprise a plurality of contrast cells each of which are produced from a corresponding single pixel MMW detector. The MMW camera constructs the MMW picture by changing perspectives of the scene by way of either moving the camera or by shifting positions of a mirror between the camera and scene.

The invention discloses a security check imaging system. The system comprises an input and output linear array, a plano-convex cylindrical lens, a swing mirror and a processor, the multi-input and multi-output linear array comprises transmitting units which are non-uniformly and sparsely arranged; each transmitting unit transmits a transmitting signal to the plano-convex cylindrical lens; the plano-convex cylindrical lens sends the fan-shaped signal to the oscillating mirror; the swing mirror sends a fan-shaped signal to the security check main body with different heights and different widths through swinging; the multiple-input-output linear array receives reflection signals corresponding to the security inspection main body under different swing amplitudes of the swing mirror; and the processor constructs a holomorphic image corresponding to the security check main body based on the reflection signals corresponding to the different swing amplitudes, and identifies whether the security check main body carries the metal article. Therefore, according to the security check imaging system, through cooperation of the transmitting unit, the plano-convex cylindrical lens, the swing mirror and the processor, the working frequency of the millimeter wave imaging technology in the security check field is improved, and the security check resolution is improved.

To provide a security inspection system with high throughput and high accuracy.SOLUTION: A security inspection system according to an embodiment comprises: an inspection device which uses radio waves for inspecting whether or not a subject owns a prescribed object; and a control device connected to a passage management device for performing determination regarding whether or not the subject has permission to pass. The control device transmits a second signal to the inspection device in response to receiving, from the passage management device, a first signal indicating the start of the determination. The inspection device starts the inspection in response to receiving the second signal.SELECTED DRAWING: Figure 1

The embodiment of the invention provides a security check method and system, and relates to the technical field of security check. The method comprises the following steps: determining a first detection result of a target person according to a millimeter wave scanning image of the target person passing through a millimeter wave security check instrument; determining a target defense area corresponding to the first position information in the detection area of the metal detection door according to a corresponding relation between the millimeter wave scanning image and the detection area of the millimeter wave security check instrument and a position corresponding relation between the detection area of the millimeter wave security check instrument and the detection area of the metal detection door; acquiring a second detection result corresponding to the detected article in the target defense area; correcting the first category information of the detected article by using the second detection result, and determining target category information of the detected article; and determining whether the detected article belongs to a contraband article according to the target category information. Therefore, the detection accuracy of the millimeter wave security inspection instrument on the contraband can be improved.

The invention discloses a magnetic hook type appearance part structure of millimeter wave human body security inspection equipment. The magnetic hook type appearance part structure comprises a complete machine framework, a door plate assembly, a stand column assembly and a bottom fence assembly. The four door plate assemblies are connected to the two sides of the front face and the two sides of the back face of the complete machine framework through door plate hooks and door plate magnetic attraction assemblies correspondingly. The four stand column assemblies are connected to the four corners of the complete machine framework through the stand column hooks and the stand column magnetic attraction assemblies correspondingly. The bottom fence assembly is connected with the bottom of the complete machine framework through a bottom fence magnetic attraction assembly. The door plate, the stand columns and the bottom fence are all of a fixed connection structure combining magnetic attraction and hooks, and tool-free rapid and convenient disassembly and assembly can be achieved; according to the invention, the space required for deployment is obviously reduced, and the assembly, disassembly and maintenance processes are more convenient; the appearance part is formed by a composite material, so that the mass of the whole machine can be reduced; the noise reduction pieces are arranged on the door plate, the stand columns and the bottom fence, so that the sound insulation and noise reduction effects are good.