166results about "Geological detection using milimetre waves" patented technology

A system and a method include a lift system including a lift platform. An object sensor is configured to detect one or more objects on or within the lift platform. The object sensor is further configured to output image data including one or more images of the lift platform. A weight sensor is configured to detect a weight of the lift platform. The weight sensor is further configured to output weight data including the weight of the lift platform. A thermal sensor is configured to detect one or more temperatures of the one or more objects on or within the lift platform. The thermal sensor is further configured to output thermal data including the one or more temperatures. A control unit is configured to receive the image data, the weight data, and the thermal data. The control unit is further configured to determine a number of individuals on or within the lift platform based on the image data, the weight data, and the thermal 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 the technical field of intelligent control, and discloses a pet defecation detection method and device applied to a cat litter basin, and the method comprises the steps: detecting a detection region corresponding to the cat litter basin based on a sensor group, and obtaining a pet detection result corresponding to the cat litter basin; the sensor group comprises a plurality of sensors; when the pet detection result is used for indicating that the target pet enters the detection area, detecting the stay duration of the target pet in the detection area; according to the stay duration, determining a pet defecation detection result corresponding to the cat litter basin; the pet defecation detection result at least comprises a pet defecation mark. Visibly, by implementing the method and the device, whether the pet enters the cat litter basin or not can be comprehensively detected through multiple sensors, so that the defecation condition of the pet in the cat litter basin can be intelligently detected on the basis of improving the pet detection accuracy, and the cleaning timeliness and the cleaning accuracy of the cat litter basin can be improved.

A method and a system assisting in monitoring the health condition of persons. A security body scanner is configured for a scan of a body of a person for security reasons with the further feature of comprising a communication component that is configured for providing health data of the person on the basis of the body scan.

A vehicular interior rearview mirror assembly includes a mirror head adjustable about a mounting base. The mirror head accommodates a mirror reflective element. A light emitter is accommodated by the mirror head and is electrically operated to emit near infrared (NIR) light. A light sensor is accommodated by the mirror head and, when the light emitter emits NIR light, the light sensor detects NIR light that reflects off an object within the cabin and that passes through the mirror reflective element. Based on detection of NIR light by the light sensor, presence of a user's hand at or near the mirror reflective element is determined.

The invention discloses a millimeter wave security check method and device, equipment and a storage medium, and the method comprises the steps: determining a first person existence state based on an output signal of a correlation infrared sensor, and triggering a metal detector and generating a metal detection result when a person exists; controlling a millimeter wave emission module to operate based on the trigger signal and calculating a millimeter wave detection result; and determining a first security check result based on the metal detection result and the millimeter wave detection result, when the first security check result does not pass and the existence of people in the security check area is determined based on the correlation infrared sensor, regenerating a new millimeter wave detection result, and determining a second security check result based on the metal detection result and the new millimeter wave detection result. According to the invention, when the first security check result is not passed and the security check object is judged not to leave the security check area based on the correlation infrared sensor, the second security check result is determined by using the first metal detection result and the new millimeter wave detection result, the security check object does not need to leave the security check area, and the secondary security check process is simplified.

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 a brightness temperature imaging method and system for air hidden detection, and the method comprises the following steps: 1, carrying out the modeling of an air shielding detection model, and obtaining a model that a radiometer is buried in sandy soil and a detection object is above the sandy soil; 2, the model is subdivided into a plurality of small areas or grids; 3, setting different dielectric constants on the measured surfaces of the target object, the sandy soil and the atmosphere, performing ray tracing, and simulating a propagation path of millimeter waves from the sky to the ground; 4, taking the Green's second theorem as a starting point, and utilizing a Kirchhoff residence phase approximation method and a Kirchhoff scalar approximation method to solve the transmission scattering problem of the Gaussian rough surface; 5, inverting the brightness temperature to the emission source point according to the brightness temperature and the transmission coefficient of the ray terminal to obtain the total brightness temperature of each position; generating an unprocessed brightness temperature map in the detected scene through accumulation calculation of multiple reflections and transmissions of rays in each medium; and 6, performing data processing on the brightness temperature map by using Gaussian filtering, and outputting a brightness temperature imaging result.

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.

A system for detecting forbidden objects worn or carried by individuals includes a metal detector having at least three transducers arranged on either side of a passage, two of these transducers being positioned on the one same side of the passage and spaced apart longitudinally in the direction of travel through the passage, while the third transducer is positioned on the opposite side of the passage so that the three transducers are available in combination to perform spatial discrimination of the location of the metallic objects detected.

Embodiments of the present disclosure provide a sparse multiple transmitting and multiple receiving antenna array arrangement for an active millimeter wave security inspection imaging, a human body security inspection apparatus and a human body security inspection method. The arrangement includes a set of transmitting antennas for transmitting millimeter waves and a set of receiving antennas for receiving millimeter waves reflected by a human body. The transmitting antennas are arranged along a first row. The receiving antennas are arranged along a second row. The first row is parallel to and is spaced apart from the second row. More than two receiving antennas are provided between two adjacent transmitting antennas.

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.

The invention relates to the field of human body security check channels, and discloses a main portable passive millimeter wave human body security check channel folding device, which comprises two fixed bases, two foldable side plates and a foldable top plate, and is characterized in that each foldable side plate comprises two first side plates, and the foldable side plates are inserted into the fixed bases through limiting devices; the foldable top plate comprises a first vertical plate, a second vertical plate, a first transverse plate and a second transverse plate, first limiting rails are arranged on the corresponding sides of the foldable side plates, second limiting rails are arranged on the corresponding sides of the first vertical plate and the second vertical plate, and the first limiting rails correspond to the second limiting rails; and the first limiting track and the second limiting track are slidably connected with a moving block, so that the problems that most of the existing passive millimeter wave security check instruments are large in size and inconvenient to deploy, and most of the existing passive millimeter wave security check instruments are fixedly mounted and are difficult to meet security check requirements in some special scenes are solved.

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.

A bubble discrimination system including a thermal imaging camera and a controller connected to the thermal imaging camera. The thermal imaging camera images the surface of the liquid in the container that is exposed to the upper space of the container. The upper space is either warmer or colder than the liquid. The camera and the controller detect changes in the temperature of the exposed surface of the liquid to identify bubbles on the exposed surface of the liquid.

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).

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.

An infrared detection system comprises the following elements. A laser source provides radiation for illuminating a target (5). This radiation is tuned to at least one wavelength in the fingerprint region of the infrared spectrum. A detector (32) detects radiation backscattered from the target (5). An analyser determines from at least the presence or absence of detected signal in said at least one wavelength whether a predetermined volatile compound is present. An associated detection method is also provided. In embodiments, the laser source is tunable over a plurality of wavelengths, and the detector comprises a hyperspectral imaging system. The laser source may be an optical parametric device has a laser gain medium for generating a pump beam in a pump laser cavity, a pump laser source and a nonlinear medium comprising a ZnGeP2 (ZGP) crystal. On stimulation by the pump beam, the ZnGeP2 (ZGP) crystal is adapted to generate a signal beam having a wavelength in a fingerprint region of the spectrum and an idler beam having a wavelength in the mid- infrared region of the spectrum. The laser gain medium and the ZnGeP2 (ZGP) crystal are located in the pump wave cavity.

The invention relates to a device adapted for inspecting the leg of an individual, which includes a support base (110) adapted to receive an individual's foot, two side panels (120) adapted to be placed on either side of an individual's leg, means (112, 114, 142) for positioning the foot and the leg relative to the support base (110) and the panels (120), microwave transmitter / receiver transducer means (200) arranged on each side panel (120) opposite the side panel facing it, and means (300) for analyzing the signals detected on the microwave receivers (200) corresponding to the signals transmitted from a panel (120) to the opposite panel and to the signals reflected from a panel (120) to that same panel.

Methods and apparatus for scanning articles, such as footwear, to provide information regarding the contents of the articles are described. According to one aspect, a footwear scanning system includes a platform configured to contact footwear to be scanned, an antenna array configured to transmit electromagnetic waves through the platform into the footwear and to receive electromagnetic waves from the footwear and the platform, a transceiver coupled with antennas of the antenna array and configured to apply electrical signals to at least one of the antennas to generate the transmitted electromagnetic waves and to receive electrical signals from at least another of the antennas corresponding to the electromagnetic waves received by the others of the antennas, and processing circuitry configured to process the received electrical signals from the transceiver to provide information regarding contents within the footwear.

To provide an inspection system for reducing waiting time for inspection of belongings, and an inspection method.SOLUTION: An inspection system 10 includes: an electromagnetic wave transmission / reception unit 11 that emits an electromagnetic wave having a wavelength of equal to or more than 30 micrometers and equal to or less than one meter, and receives a reflection wave; a detection unit 12 that performs detection processing, based on a signal of the reflection wave; a decision unit 13 that decides a path in which an inspection target person advances, based on a result of the detection processing; and a guide unit 14 that performs processing of guiding the inspection target person to the decided path.SELECTED DRAWING: Figure 3

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.

Provided are a millimeter-wave human body security inspection method and system. The method comprises: before a person to be inspected enters an inspection channel defined by a millimeter-wave human b

The invention provides a millimeter wave human body security check method and system. The method comprises the following steps: guiding an examined person to enter an examination channel, and displaying information related to a specified posture to the examined person in the examination channel so as to guide the examined person to stand at a specified standing position in the examination channel in a standing posture basically conforming to the specified posture; scanning and checking the checked person by the millimeter wave human body security check instrument to obtain millimeter wave scanning data of the checked person; the workstation reconstructs a millimeter wave scanning image of the examined person based on the millimeter wave scanning data and confirms the standing posture; after millimeter wave scanning image reconstruction of the examined person is completed and it is determined that the standing posture of the examined person meets the requirement of the specified posture, the examined person is guided to leave the examination channel; and when the examined person leaves the examination channel, the workstation analyzes the reconstructed millimeter wave scanning image to identify whether the examined person carries the suspected article.

The present invention discloses a portable multi-channel passive millimeter wave radiation detector system, which includes: a metal shell; a focusing lens antenna fixedly arranged at one end of the metal shell, the focusing lens antenna adopts a metasurface lens antenna; a feed antenna arranged opposite to the focusing lens antenna is arranged inside the metal shell, the feed antenna is connected to a radiometer receiver, the feed antenna adopts a conjugate linear gradient slot antenna with metamaterial units loaded on both sides, and is arranged in a two-dimensional N×N manner on the focal plane, N≥2; the electromagnetic waves radiated by the target scene to be measured are gathered to the feed antenna through the focusing lens antenna and received, and transmitted to the radiometer receiver; the voltage data output by the radiometer receiver is processed by a processing module to generate a target scene image, and is displayed. The overall size of the measuring instrument system is reduced, so that the detector system can be portable; the feed antenna array is arranged in a two-dimensional N×N manner, which improves the imaging speed and imaging quality.

A detection system may include a vessel configured to contain one or more substances, a transmitting antenna disposed within the vessel, a receiving antenna disposed within the vessel, and a control system. The control system may be configured to: transmit first radio-frequency (RF) energy into the vessel via the transmitting antenna; receive second RF energy from the vessel via the receiving antenna; and based on a comparison of the first RF energy and the second RF energy, determine a presence of a particular substance within the vessel.