25 results about "Radiometric measurement" patented technology

Systems and methods for ablating target tissue, measuring parameters during ablation such as temperature of the target tissue, and predicting volume of the ablation based on the measured parameters are provided. The system may include a switching antenna for both heating of target tissue and radiometry to monitor the temperature of the heated tissue, and a processor for calculating the temperature of the target tissue, segmenting medical images, and predicting volume of the ablation based on radiometric signals indicative of the target tissue temperature. The predicted ablation volume may be adapted to account for tissue boundaries and anatomical structures. The processor further may determine properties of the target tissue such as tissue type.

Disclosed are a system and method for wired / wireless-online / offline communication-based continuous, real-time proportional and radiometric measurement, processing, and monitoring of the output of UV sources which generate UV radiation that can be used in water disinfection, surface disinfection, air, and room disinfection processes and for non-disinfection purposes. The system and method are provided to measure and monitor the UV output of the UV sources or in the environment continuously in real-time through externally placed sensors. In the system and method, data from the sensors is processed in a microprocessor-based electronic module, and the information is transmitted to an online / offline interface accessible to the end-user via wired / wireless communication.

This invention relates to the field of radiation measurement technology, specifically to an authentication method for encrypted radiation measurement. It addresses the problem that existing technologies lack mechanisms to effectively shield and minimize the disclosure of sensitive information while maintaining identification efficiency, making them unsuitable for application scenarios where privacy protection demands are increasingly prominent. The method includes obtaining irradiation image data of a reference item and a test item, scaling their sizes to N×N, and denoting them as D₁ and D₂ respectively; introducing a key matrix λ; obtaining encryption matrices α₁ and α₂ through matrix multiplication of λ with D₁ and D₂ respectively; obtaining an absolute difference matrix β; obtaining a hash matrix σ; when β(i,j)>μ(i,j), setting σ(i,j) to 1, indicating that at this position, the difference between the reference item and the test item has exceeded the maximum difference, and the difference index increases by 1; when β(i,j)≤μ(i,j), setting σ(i,j) to 0, indicating that there is no difference between the two items at this position; scrambling and reducing the dimension of the hash matrix σ to obtain a hash sequence denoted as F, and using the elements of the hash sequence and H as the final difference index to accurately determine the identity or legitimacy of the test item.

The invention relates to a radiometric measuring device comprising a scintillation counter, having at least one semiconductor photomultiplier (10) which can be optically coupled to a scintillator (3) for generating electrical signals on the basis of the light signals, a signal evaluation unit electrically coupled to the semiconductor photomultiplier (10) for generating a measurement signal on the basis of the electrical signals, and measuring device electronics for controlling the measuring device, wherein the measuring device electronics have an activation device (17) and a time measuring device, wherein the semiconductor photomultiplier (10) can be activated and deactivated by means of the activation device (17) and a time interval is provided between an activation of the semiconductor photomultiplier (10) and a first event by means of the time measuring device, wherein the measuring device electronics are designed in such a way that the semiconductor photomultiplier (10) is deactivated for a predefined time period immediately after detection of the event and a measurement result is determined from the time interval.

The present invention relates to a radiometric cross-calibration method for optical remote sensing satellites based on a stable radiation source, comprising the following steps: a. calibrating the optical remote sensing satellite using an onboard blackbody to obtain a calibration coefficient; b. calculating the radiometric value of the stable radiation source based on the calibration coefficient; c. repeating steps (a) and (b) to obtain a series of calibration coefficients and radiometric values; and d. selectively performing radiometric correction based on the decay of the optical remote sensing satellite's radiometric measurement performance. The present invention can achieve stable calibration of the absolute radiometric reference of an optical remote sensing satellite on orbit, providing support for the quantitative processing and application of remote sensing data.

An extended area “cavity type” blackbody for use as a radiometric reference for imaging systems may have a well in the form of a cube having four sidewalls and a back wall, and open at the front. The temperature of the back wall may be controlled independently of the temperature(s) of the sidewalls. This system may produce infrared radiance closer to an ideal radiator than typical extended area sources. A “simple” blackbody is disclosed, having a source plate with a front emitting surface; a ledge element disposed in front of and below the source plate for heating air in front of the source plate; and (optionally) another ledge element disposed in front of and above the source plate for cooling air in front of the source plate. A housing may support the source plate and ledge element, and a vent may be provided in front of and above the source plate. A resistive heater may be associated with the ledge element; and (optionally) TECs may be associated with the other (cooling) ledge element. Angles of the ledges may be adjustable to optimize the best uniformity for a particular implementation. Temperature control of the ledges may be in unison with or independent from the source plate.

Radiometric limit switch, with - a spotlight (5), ◯ sends radiometric radiation along a radiation path running at the height of the limit level to be monitored, or which is in a free state when the limit level has been undershot, and or which is in a state covered by a medium when the limit level is exceeded, - a detector (7) inserted at the end of the beam path, which is designed to measure discrete radiation intensities (I) arriving at it, which depend on the state of the radiation path, wherein a statistical distribution of the radiation intensities (I) in the free and in the covered state is given by two separate Poisson distributions, - a measuring instrument electronics (15) connected to the detector (7), which ◯ an interval (T) starts in which a successive distribution (V(T)) of the measured radiation intensities (I) is recorded, o the distribution (V(T)) is continuously or at predetermined time intervals examined to see if it contains two separate Poisson distributions, o the interval (T) ends after two separate Poisson distributions have been identified in the distribution (V(T)) recorded up to that point, o based on the positions of the two Poisson distributions identified in the distribution (V(T)) within the distribution (V(T)) an upper threshold (S max ) and / or a lower threshold (S min ) for the radiation intensity (I), and o those in case of exceeding or falling below the threshold value (S min , S max ) detects a change of state to the free or covered state by measuring the radiation intensity (I) following the interval (T).

The present invention relates to a three-dimensional radioactivity measurement and visualization method based on shape recognition of equipment or structures to be decommissioned in nuclear-related facilities. To this end, the present invention comprises: (a) a three-dimensional modeling step using a three-dimensional scanner for equipment or structures to be decommissioned within nuclear-related facilities; (b) an optimization and material implementation step based on data meshing and reverse engineering for 3D modeling; (c) a three-dimensional modeling lattice structure-based characteristic information and measurement information storage database (DB) system construction step; (d) a three-dimensional modeling lattice structure-based physical characteristic information and major nuclides' unique characteristic information database (DB) storage step; (e) a measurement, correction, and storage step for the radioactivity of a measurement target using a radioactivity measurement apparatus linked to a three-dimensional scanning technology; and (f) a step of visualization according to radioactive waste level standards based on radioactivity measurement information. The purpose of the present invention configured as described above is to: provide an efficient and more accurate radioactivity measurement method by using a radioactivity measurement technology linked to a three-dimensional scanning technology, for the purpose of evaluating radiological characteristics required when establishing a decommissioning strategy and plan, such as a decommissioning method, decommissioning schedule, and decommissioning cost calculation for radioactive contaminated equipment or structures during decommissioning in nuclear-related facilities; enable the improvement of safety and work efficiency of a radiation worker through a series of automated processes of remote control, radioactivity measurement, and analysis; and enable the provision of efficient, safe, and more accurate radiological characteristic information with a system configuration that provides visualization information for each radioactive waste level by using a database system for storing and managing radioactivity measurement information based on a three-dimensional modeling lattice structure for a radioactivity measurement target.

A method and device (10) for making a calibrated measurement of light from an object (E). In a first measurement window (W1), object light (LE) is received from the object (E) onto a beam splitter (11) which splits the light into a signal path (Ps) and a reference path (Pr). A first signal (S1=T·LE·Hs) is measured by a signal detection element (15s) in the signal path (Ps). A second signal (S2=R·LE·Hr) is measured by a reference detection element (15r) in the reference path (Pr). In a second measurement window (W2), calibration light (LC) is received onto the beam splitter (11). A third signal (S3=R·LC·Hs) is measured by the signal detection element (15s) in the signal path (Ps). A fourth signal (S4=T·LC·Hr) is measured by the reference detection element (15r) in the reference path (Pr). A measurement value of the object light (LE) is determined based on the measured signals (S1,S2,S3,S4).

Radiometric systems may comprise a radiometer, an antenna and a processor communicatively coupled together. The processor may provide a contact-focused output based on filtering or other processing of a raw radiometric output signal. The contact-focused output may facilitate determination of whether contact has been achieved and / or assessment of contact. A miniaturized reflectometer may be configured to determine an amount of reflected power from the antenna. The processor may be configured to determine a reflection coefficient of the reflected power determined by the reflectometer and to identify tissue type based on the reflection coefficient. Systems and methods for facilitating deeper temperature measurements of a radiometer are described.

Radiation protection container (100) for providing a radiation source (Q) for a radiometric measuring device, with a radiation source holder (1) and a shielding device (2), wherein the radiation protection container (100) comprises a push button (3) by means of which the radiation protection container (100) can be brought into different states (Z0, Z1, Z2, Z3) which differ with regard to the radiation of the radiation source (Q) leaving the radiation protection container.

The invention relates to a radiometry measuring device (100) comprising: - a laser source (110) adapted to produce a laser beam (120), - a projection unit (130) adapted to illuminate simultaneously at least two regions (11) of a sample (1) with the laser beam, the projection unit comprising a shaping optical unit (132) adapted to, before the laser beam illuminates the sample, increase a divergence of the laser beam and modify an intensity profile of the laser beam, - a photothermal detection device (150) comprising at least two photosensitive elements (152), each photosensitive element being associated with one of the at least two regions of the sample and being adapted to detect a heat flow (140) radiated by said region, heated by the laser beam, and to deliver a measuring signal (S2) representative of said heat flow, - a processing unit (160) configured to determine, for each photosensitive element, a property of its associated region of the sample based on the measuring signal delivered by said photosensitive element.

The invention provides a potassium feldspar luminescence dating standard growth curve establishment method and system based on radiation measurement, and the method comprises the steps: obtaining the spatial distribution information of a potassium feldspar single particle in a sample to be measured, quartz luminescence data and a single particle infrared luminescence signal of the potassium feldspar; scanning the to-be-detected sample, and positioning the positions of a plurality of high-radiation response particles according to a scanning result; calculating the particle distribution density of the potassium feldspar according to the spatial distribution information, and constructing a mineral spatial relation graph through a graph convolutional network based on the particle distribution density and the positions of the plurality of high-radiation response particles; polymerizing radiation measurement signals of adjacent particles by utilizing a mineral space relation graph, and synchronously training the radiation measurement signals and quartz photoluminescence data; the training result and the single-particle infrared luminescence signal are fused, and a heterogeneous adaptive standard growth curve is established according to the fusion result. According to the invention, the precision and reliability of dating of the incomplete sunburn-out sample are improved.

Disclosed are a system and method for wired / wireless - online / offline communication-based continuous, real-time proportional and radiometric measurement, processing, and monitoring of the output of UV sources which generate UV radiation that can be used in water disinfection, surface disinfection, air, and room disinfection processes and for non-disinfection purposes. The system and method are provided to measure and monitor the UV output of the UV sources or in the environment continuously in real-time through externally placed sensors. In the system and method, data from the sensors is processed in a microprocessor-based electronic module, and the information is transmitted to an online / offline interface accessible to the end-user via wired / wireless communication.

A constructively simplified detector for a radiometric measuring system, wherein the measuring system serves for determining density or fill level of a fill substance in a container, includes: a scintillator; a photomultiplier, which is optically connected with the scintillator such that it generates an electrical evaluation signal as a function of radioactive radiation intensity entering the scintillator; and an evaluation unit of the detector connected to the photomultiplier, which determines density or fill level of the fill substance based on the evaluation signal. The detector is distinguished by an optically and magnetically shielding housing, which shields at least the scintillator and the photomultiplier. As a result, a separate, magnetic shielding of the photomultiplier is unnecessary. In this way, the number of components and, thus, effort to produce the detector are reduced.

The invention concerns a method for calibrating a thermal satellite used to measure land surface temperature (LST). Based on real-time infrared image data, a preliminary LST product is calculated. For each location point, a reference surface temperature from a weather model is retrieved. A radiance measurement offset is then determined based on the reference temperature. Using this offset, the satellite's radiance measurements are corrected, and a calibrated LST product is generated. The method allows calibration to begin as soon as infrared data is sensed, enabling real-time LST measurement with real-time calibration. This supports dynamic in-orbit calibration throughout the satellite's orbit and improves the reliability and accuracy of LST measurements.

Radiometric systems may comprise a radiometer, an antenna and a processor communicatively coupled together. The processor may provide a contact-focused output based on filtering or other processing of a raw radiometric output signal. The contact-focused output may facilitate determination of whether contact has been achieved and / or assessment of contact. A miniaturized reflectometer may be configured to determine an amount of reflected power from the antenna. The processor may be configured to determine a reflection coefficient of the reflected power determined by the reflectometer and to identify tissue type based on the reflection coefficient. Systems and methods for facilitating deeper temperature measurements of a radiometer are described.

The invention relates to the technical field of radioactive measurement, and aims to solve the problem that the signal-to-noise ratio and the measurement precision of an energy spectrum detection result of an existing direct radiation detector are remarkably reduced due to the fact that the existing direct radiation detector is easily influenced by multiple interference factors during working. The invention provides an energy spectrum noise reduction method and system for a direct radiation detector, and the method comprises the steps: collecting a radiation signal, amplifying an induction current pulse into a voltage pulse signal, and carrying out the digital processing; then high-pass filtering and threshold screening are carried out, effective signals with the amplitude higher than a set threshold are reserved, and time jitter is eliminated through peak position alignment; calculating a transient current, and carrying out smooth noise reduction and normalization processing on the waveform of the transient current; inputting the processed transient current data into an end-to-end convolutional neural network for classification and judging whether the transient current data is a complete transition event or not; and excluding non-transition events according to a classification result, and reconstructing energy spectrum data after noise reduction. The detection efficiency of the direct radiation detector can be improved, and the energy resolution of the direct radiation detector is remarkably improved.

Radiometric measuring instrument (1), comprising: - a number n of sensors (2_1 to 2_n), wherein each sensor (2_i) of the number n of sensors (2_1 to 2_n) is configured to provide associated sensor data (x i ) to generate a total of n sensor data (x1, ...,x n ) is generated using the number n of sensors (2_1 to 2_n), - a measurement unit (4) designed to calculate a number m of measurement values ​​(ŷ1, ...,y) m ) depending on the number n of sensor data (x1, ...,x n ) based on values ​​of a number d of parameters (θ1, ..., θ d to calculate, and - a learning unit (5), wherein the learning unit (5) is trained to perform based on training data ( ( xt 1 ( i ) ,..., xtn ( i ) ) ; ( ys 1 ( i ) ,..., ysm ( i ) ) ) the values ​​of the number d of parameters (θ1, ..., θ d to calculate - where the number n of sensors (2_1 to 2_n) is selected from the set of sensors consisting of: - at least one radiometric sensor, in particular a radiometric sensor designed to generate sensor data in the form of a count rate or radiation intensity data, and / or a radiometric sensor designed to generate sensor data in the form of information about radiometric spectra, - at least one sensor designed to generate sensor data in the form of temperature data, - at least one sensor designed to generate sensor data in the form of acceleration data, - at least one sensor designed to generate sensor data in the form of speed data, - at least one sensor designed to generate sensor data in the form of position data, - at least one sensor, in particular in the form of an ultrasonic sensor or laser sensor, which is designed to generate sensor data in the form of information about a load height profile, and - at least one sensor designed to generate sensor data in the form of humidity data, - where at least one measurement variable is selected from the set of measurement variables consisting of: - Fill level, - Positions and / or thicknesses of individual material layers, - Density, - Delivery rate, in particular total delivery mass, - Throughput, especially mass flow rate, and - Material composition, in particular content levels, - wherein the learning unit (5) is trained to extract data from the training data ( ( xt 1 ( i ) ,..., xtn ( i ) ) ; ( ys 1 ( i ) ,..., ysm ( i ) ) ) a number n of training sensor data ( xt 1 ( i ) ,..., xtn ( i ) ) to extract and a number m of associated setpoints ( ys 1 ( i ) ,..., ysm ( i ) ) the number m of measured quantity values ​​(y1, ..., y m ) to extract, and - wherein the measurement unit (4) is configured to provide a number m of training values ( yt 1 ( i ) ,..., ytm ( i ) ) the number m of measured variable values ​​(y1, ...,y m ) depending on the number n of training sensor data ( xt 1 ( i ) ,..., xtn ( i ) ) to calculate, and - wherein the learning unit (5) is trained to, based on the number m of setpoints ( ys 1 ( i ) ,..., ysm ( i ) ) the number m of measured quantity values ​​(y1, ..., y m ) and the number m of training values ( yt 1 ( i ) ,..., ytm ( i ) ) the number m of measured quantity values ​​(ŷ1, ..., y m) the values ​​of the number d of parameters (θ1, ..., θ d to calculate.

Disclosed are a system and method for wired / wireless - online / offline communication-based continuous, real-time proportional and radiometric measurement, processing, and monitoring of the output of UV sources which generate UV radiation that can be used in water disinfection, surface disinfection, air, and room disinfection processes and for non-disinfection purposes. The system and method are provided to measure and monitor the UV output of the UV sources or in the environment continuously in real-time through externally placed sensors. In the system and method, data from the sensors is processed in a microprocessor-based electronic module, and the information is transmitted to an online / offline interface accessible to the end-user via wired / wireless communication.

This application discloses a method, apparatus, electronic device, and storage medium for panoramic stitching of infrared data, relating to the field of infrared data stitching technology. The method includes: acquiring an original data matrix and a previous stitched data matrix; performing kernel mapping processing on the radiometric measurements in the matrices using kernel functions to obtain an original kernel feature matrix and a previous stitched kernel feature matrix; constructing a radial attenuation model centered on the optical axis of the infrared detector for radiometric consistency correction to obtain an original correction matrix and a previous stitched correction matrix; determining a fusion weight matrix based on the kernel feature similarity at each pixel position in the spatially overlapping region of the original correction matrix and the previous stitched correction matrix; and performing pixel-by-pixel weighted fusion of the data in the spatially overlapping region according to the fusion weight matrix, and stitching it with pixels in the non-overlapping region to obtain the current stitched data matrix for the current round. The above technical solution improves the accuracy and overall consistency of infrared panoramic data fusion.

Systems and methods for ablating target tissue, measuring parameters during ablation such as temperature of the target tissue, and predicting volume of the ablation based on the measured parameters are provided. The system may include a switching antenna for both heating of target tissue and radiometry to monitor the temperature of the heated tissue, and a processor for calculating the temperature of the target tissue, segmenting medical images, and predicting volume of the ablation based on radiometric signals indicative of the target tissue temperature. The predicted ablation volume may be adapted to account for tissue boundaries and anatomical structures. The processor further may determine properties of the target tissue such as tissue type.

The utility model belongs to the remote sensing measurement and water environment monitoring technical field discloses a kind of shipborne water area spectral radiometric equipment, including controller, measuring mechanism and with the positioning orientation mechanism and stabilizing platform of controller connection, the stabilizing platform is used to realize the attitude stability of measuring mechanism;The stabilizing platform includes three rotatable connection drive shaft assemblies, and three drive shaft assemblies are heading shaft assembly, pitch shaft assembly and cross roll shaft assembly respectively, each described drive shaft assembly includes driving element and joint arm driven by the driving element, the joint arm can be executed relative rotation under the driving of the driving element, and the measuring mechanism is supported by the joint arm of the heading shaft assembly, the controller is connected with the driving element of the cross roll shaft assembly;The positioning orientation mechanism is used to determine the included angle between the direction of heading shaft assembly and the earth north direction.

System and method for determining the presence of chromophores within an assay, the method including: directing a light source at a surface of the assay to thermally excite chromophore particles of interest; receive radiometric measurements from an opposing surface of the assay; and detecting thermal wave responses of surface or subsurface chromophore particles within the assay from the received radiometric measurements. In some cases, detecting thermal waves as a radiometric signal from one or more test lines of the assay and detecting thermal waves as a radiometric signal from a control line of the assay; and wherein detecting the thermal wave responses includes determining an intensity of the detected thermal waves from the one or more test lines and the control line, normalizing the thermal-wave response of the one or more test lines to the thermal-wave response of the control line, and outputting the normalized thermal-wave response.

Device for detecting foreign bodies (21) in a mat (5) scattered on a conveying device (4) during the production of a material sheet, wherein the mat (5) consists at least partially of fibers or chips and binders which are pressed together under increased temperature, wherein at least one first sensor device (6) operating with electromagnetic or ultrasonic waves or with magnetic fields or with radiometry is provided, which is directed towards one or more spatial measuring areas (22) of the mat in order to detect foreign bodies (10), and at least a second sensor device (7) is provided which is also aligned to the measuring ranges (22), and wherein the first sensor device (6) is suitable for performing material detection of the foreign body (10), and the second sensor device (7) is suitable for determining at least one foreign body dimension, characterized by the fact that which at least one first sensor device (6) and at least one second sensor device (7) use different physical operating methods, and that an evaluation device (15) is provided which is capable of performing a sensor fusion of the at least one first sensor device (6) and the least one second sensor device (7), wherein, depending on the result of the sensor fusion, a foreign body ejection device (11) can be activated in the evaluation device (15).