50 results about "Muon detector" patented technology

The invention provides a muon detector for measuring soil moisture, and belongs to the technical field of testing by utilizing wave or particle radiation. The muon detector comprises a tubular scintillator which is used for detecting muons in cosmic rays and emitting scintillation light, and at least two outer optical fibers which are equal in screw pitch and used for collecting and transmitting the scintillation light are spirally wound on the periphery of the tubular scintillator. At least two inner optical fibers which are equal in screw pitch and used for collecting and transmitting scintillation light are spirally arranged on the inner circumference of the tubular scintillator, and the rotation direction of each inner optical fiber is opposite to that of each outer optical fiber, so that the tubular scintillator is divided into a plurality of latticed detection units in the internal and external directions. Compared with the prior art, the latticed detection unit is smaller, the existing scintillation light signal can only be acquired by the outer optical fiber, the scintillation light signal can also be acquired by the inner optical fiber, the optical fiber closer to the optical fiber can be acquired by the optical fiber, and the inner optical fiber and the outer optical fiber form an acquisition network, so that the detection precision is higher.

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 discloses a muon detector with variable scintillator spacing, which comprises a supporting base, and a bottom plate is arranged at the upper end part of the supporting base; the lower-layer detection part is fixedly arranged at the end part of the bottom plate, a multi-stage mechanical telescopic mechanism is arranged on the bottom plate, and an upper-layer detection part is arranged at the end part of the multi-stage mechanical telescopic mechanism; the main control data acquisition system is electrically connected with the multi-stage mechanical telescopic mechanism, the upper-layer detection part and the lower-layer detection part, and is used for setting and acquiring a distance value between the upper-layer detection part and the lower-layer detection part; and calculating according to the collected real-time spacing value, and performing corresponding data correction and image reconstruction according to the effective detection range and the optimal detection area under the current configuration. According to the method, the spatial resolution and the counting rate can be dynamically adjusted, so that the performance limitation caused by a fixed spacing design is broken through, and the comprehensive efficiency in a complex detection task is remarkably improved.

The invention discloses a muon detector. A steel frame seat, a power supply, a muon receiving converter and a data receiving and processing device are arranged in a shell; the muon receiving converter is mounted on the steel frame seat and comprises a platy scintillator and a photomultiplier plate wrapping one surface of the scintillator; the data receiving and processing device comprises a trigger device, the front end of the trigger device is connected with a photomultiplier through a preamplifier, the rear end of the trigger device is connected with an analog-to-digital converter and a time-to-digital converter, and the analog-to-digital converter and the time-to-digital converter are connected with the central processing unit through data lines. A buffer memory is arranged on a connecting line of the analog-to-digital converter and the central processing unit; the power supply supplies power to the muon receiving converter and the data receiving and processing device through cables; and a display screen connected with the central processing unit is arranged on the shell. According to the invention, rock stratum changes and secondary disasters can be monitored in real time, dynamic and accurate three-dimensional data are provided for rescue workers, it is ensured that a rescue channel can be constructed quickly and effectively, and a rescue scheme can be adjusted in real time.

The invention provides a muon detector scintillator self-checking method, and relates to the field of muon detectors, and the method comprises the steps: constructing a muon scintillator self-checking model, and determining the number of actually measured muons through the muon scintillator self-checking model; introducing a solid angle correction factor, and correcting the actually measured muon number to obtain a geometrically corrected muon number; and calculating an average value and a variance of the muon number after geometric correction, and obtaining a scintillator self-inspection result of the muon detector in combination with an anomaly evaluation function. The technical scheme of the invention is suitable for health monitoring in the field long-term detection operation process of the scintillator, and can find the abnormality of the scintillator in time, thereby avoiding the waste of detection time, and improving the reliability of data.

A flexible muon detector for inspecting an object has: a continuous scintillator film (102) for detecting incident muons by generating photons; photomultipliers (104) discretely distributed across a face of the continuous scintillator film, which are configured to optically connect to the continuous scintillator film. The discrete photomultipliers (104) are arranged to detect the generated photons and generate corresponding electrical signals; and flexible electronics (106) electrically connected to the photomultipliers so as to receive the generated electrical signals.

The present invention relates to a modular energy threshold muon detector (101 ) for monitoring soil density and / or permeability comprising at least two muon passage position detection modules (5), each muon passage position detection module (5) comprising a pair of scintillating elements (9) consisting of two segmented plates (9) placed one on top of the other, each segmented plate (9) comprising a plurality of scintillating bars (8) positioned in such a way that the scintillating bars (8) of one of the two segmented plates (9) are rotated by 90° with respect to the scintillating bars (8) of the other plate (9), each scintillating bar (8) comprising at least one silicon photomultiplier (21 ) positioned at an end face (71 ) of said scintillating bar (8), an outer casing (1 ) adapted to contain said at least two muon passage position detection modules (5), arrangement means configured to arrange said at least two muon passage position detection modules (5) in respective positions selectable from a plurality of positions inside said outer casing (1 ). The present invention also relates to a system for monitoring soil density and / or permeability.

This invention discloses a muon detector and a muon localization method and track reconstruction method, comprising a first scintillator layer, a second scintillator layer, and a third scintillator layer. The first scintillator layer includes multiple annular first scintillators stacked vertically in a cylindrical shape. The second scintillator layer includes multiple elongated second scintillators spirally and tightly wound around the outer wall of the first scintillator layer. The third scintillator layer includes multiple elongated third scintillators extending vertically, distributed circumferentially along the outer wall of the second scintillator layer. Compared with the prior art, this invention can improve the axial positioning accuracy of the muon detector, increase the detection range, and shorten the imaging time without increasing the complexity of the muon detector. Furthermore, it can perform geometric consistency discrimination for false triggering, crosstalk, or inconsistent combination events, thereby improving positioning stability and reliability.

The invention relates to an intelligent water level control device and method based on cosmic ray muon flux. The device comprises a muon detector, a liquid level meter, water level adjusting equipment and a central processing unit which is in communication connection with the muon detector, the liquid level meter and the water level adjusting equipment. The central processing unit executes a closed-loop control process, firstly sets a target water level, controls the adjusting equipment, regulates the target water level according to feedback of the liquid level meter, then collects and monitors real-time muon flux data, judges whether collection meets preset conditions or not, sets a next target water level if the collection meets the preset conditions, regulates and controls the next target water level repeatedly, and monitors continuously if the collection does not meet the preset conditions until a preset measurement sequence is completed. According to the invention, a data acquisition system and a water level control system are integrated, accurate water level regulation and control are realized, dynamic decision is made through a muon flux monitoring result, dynamic coupling feedback of data acquisition and water level control is achieved, data acquisition sufficiency can be automatically judged, a measurement state can be intelligently switched, water depth-flux model experiment efficiency and automation level can be improved, and the water level can be accurately controlled. And the requirements of active control variables and intelligent experiments are met.

The present invention relates to a modular energy threshold muon detector (101 ) for monitoring soil density and / or permeability comprising at least two muon passage position detection modules (5), each muon passage position detection module (5) comprising a pair of scintillating elements (9) consisting of two segmented plates (9) placed one on top of the other, each segmented plate (9) comprising a plurality of scintillating bars (8) positioned in such a way that the scintillating bars (8) of one of the two segmented plates (9) are rotated by 90° with respect to the scintillating bars (8) of the other plate (9), each scintillating bar (8) comprising at least one silicon photomultiplier (21 ) positioned at an end face (71 ) of said scintillating bar (8), an outer casing (1 ) adapted to contain said at least two muon passage position detection modules (5), arrangement means configured to arrange said at least two muon passage position detection modules (5) in respective positions selectable from a plurality of positions inside said outer casing (1 ). The present invention also relates to a system for monitoring soil density and / or permeability.

A method and system for non-invasive archaeological investigation of pyramid structures are disclosed. The method combines high-resolution three-dimensional seismic acquisition with Marchenko-based wavefield reconstruction and multiple-reflection imaging to detect and characterize subsurface features such as voids, tunnels, and hidden chambers beneath and around pyramids. Electromagnetic vibrators, generate compressional and shear waves without ground penetration, and three-component (3C) receiver nodes, optionally equipped with over-under muon detectors, record seismic and muon flux data simultaneously. The Marchenko method enables reconstruction of virtual internal sources and receivers, while multiple-reflection imaging provides information from deeper layers below the pyramid base. The invention offers a fully non-invasive, high-resolution, and reversible approach suitable for cultural heritage preservation.

The present application relates to a method, device, equipment, and storage medium for monitoring the operating state of a nuclear facility. The method includes: a neutrino detector collects neutrino information released by the nuclear facility to be monitored, a first muon detector collects first muon information emitted by a muon ray source to the nuclear facility to be monitored, a second muon detector collects second muon information emitted by the nuclear facility to be monitored, and a processing device determines the operating state of the nuclear facility to be monitored according to the particle information, where the particle information includes neutrino information and / or muon information; the muon information includes the first muon information and the second muon information. Using this method can solve the problem that obstacles affect the monitoring of the operating state of the nuclear facility.

The present invention discloses a tomographic processing method for mining areas based on borehole observation. Utilizing the principle that cosmic ray muons lose intensity after passing through matter, muon detectors are arranged in boreholes to observe muon intensity underground, thereby obtaining information on the distribution of material opacity at various locations underground with respect to zenith angle and azimuth. Through multi-borehole and multi-position depth measurements, a cross-coverage of muon observations of the observation area is formed, thereby establishing a density inversion solution equation, and ultimately solving the accurate three-dimensional density structure under the surface. The muon source used in the present invention is a natural source, and muons do not damage the observed object. The observable depth can reach up to a depth of one kilometer, and the existing boreholes in the mining area are fully utilized to provide a safety detection function, thereby ensuring safe production.

The application relates to a mountain stability evaluation method, device, computer equipment and storage medium, and relates to the technical field of mountain stability. The evaluation method comprises the following steps: dividing a mountain into a plurality of voxels; constructing an adjacency structure graph and a density field posterior probability distribution of the mountain, wherein the adjacency structure graph is constructed by muon data recorded by a muon detector arranged in a grotto, and the density field posterior probability distribution is a probability distribution of all density models of the mountain under the muon data and the adjacency structure graph; sampling from the density field posterior probability distribution according to the adjacency structure graph to obtain a plurality of density field samples of the mountain; obtaining a density value of each voxel according to the plurality of density field samples; and obtaining a stability abnormal area in the mountain according to the density values of the plurality of voxels. The mountain stability evaluation method can accurately determine the stability abnormal area in the mountain, and improves the accuracy of mountain stability evaluation.

The invention belongs to the field of geological exploration, and discloses a logging-while-drilling device based on the muon imaging technology. Comprising an outer shell, an inner cylinder and a muon detector, the inner cylinder is coaxially nested in the outer shell, and a relatively sealed detection space is formed between the inner cylinder and the outer shell; the muon detector is arranged in the detection space; the muon detector comprises a scintillator assembly and a photoelectric detector, the scintillator assembly is coaxially sleeved in the detection space, the photoelectric detector is arranged on the inner side of the scintillator assembly, the scintillator assembly is made of a scintillator material capable of resisting the high temperature of 140 DEG C or above, and a heat insulation layer is arranged on the inner wall of the detection space. The method can be widely applied to oil-gas exploration, mineral resource investigation and underground structure detection, and the detection depth and imaging precision of logging while drilling are improved.

The invention relates to a landslide interface detection method and device. The detection method comprises the steps that detection data collected by a muon detector and outer surface data, collected by a topographic surveying and mapping device, of a landslide body are obtained; and based on a compressed sensing iterative reconstruction algorithm, processing the detection data and the outer surface data, and determining a landslide interface. The detection data acquired by the muon detector and the outer surface data, acquired by the topographic surveying and mapping device, of the landslide mass are combined at the same time, so that the adverse effect of the topography on data acquisition is reduced, and the basic accuracy and comprehensiveness of data for constructing the three-dimensional interface of the landslide mass are improved; through a compressed sensing iterative reconstruction algorithm, high-dimensional information is restored by using a small amount of data, the reliability of constructing a three-dimensional interface of a landslide mass is improved, and the accuracy of a detection result is improved.

The invention relates to a mountain stability evaluation method and device, computer equipment and a storage medium, and relates to the technical field of mountain stability. The evaluation method comprises the following steps: dividing a mountain into a plurality of voxels; an adjacent structure diagram and density field posterior probability distribution of the mountain are constructed, the adjacent structure diagram is constructed through muon data recorded by muon detectors arranged in the grotto, and the density field posterior probability distribution is probability distribution of all density models of the mountain under the muon data and the adjacent structure diagram; sampling from the density field posterior probability distribution according to the adjacent structure diagram to obtain a plurality of density field samples of the mountain; obtaining a density value of each voxel according to the plurality of density field samples; and according to the density values of the voxels, obtaining a stability abnormal region in the mountain. According to the mountain stability assessment method, the stability abnormal area in the mountain can be accurately determined, and the accuracy of mountain stability assessment is improved.

A method and a system (101) for monitoring land traffic in an area (103) are disclosed. The method comprises positioning one or more muon detectors (120, 121) in and / or below the area (103), measuring muon flux time series data by the one or more muon detectors (120, 121), processing the muon flux time series data to detect motion in the area (103), determining a motion detection result based on the processing, and causing detonation of one or more explosives based on the motion detection result. The method and system can be particularly applied in the defense sector where the system (101) acts as trigger system for detonating the explosives of a land mine or an anti-tank mine.

The invention discloses a method and a system for measuring the height of a low-altitude aircraft based on muon detection, and the method comprises the steps: deploying a muon detector array on the aircraft for muon event detection, and obtaining the motion trail of muons and the zenith angle of the muons; performing flux calculation and angular distribution statistics on the motion trails of the muons and zenith angles of the muons to obtain muon flux and muon angular distribution characteristic values; and constructing a muon characteristic parameter and height corresponding relation model, matching muon flux and muon angular distribution characteristic values, and introducing external geographical environment parameters to perform inversion calculation to obtain an aircraft height value. According to the method, noise caused by rapid fluctuation of low-altitude atmosphere in muon detection can be suppressed, and the calculation precision of the height value of the aircraft is further improved. The method and system for measuring the height of the low-altitude aircraft based on muon detection can be widely applied to the technical field of flight height measurement.

The application discloses a muon detector, a three-dimensional photographic imaging method and device and a storage medium, wherein the muon detector comprises three detection planes and a lead plate which are arranged in parallel in sequence, and three acquisition plates; the lead plate is arranged between the second detection plane and the third detection plane; the detection plane is composed of a three-prism-shaped scintillator and a corresponding photoelectric sensor; the photoelectric sensor is connected with the acquisition plate; and the acquisition plate is used for acquiring the number of muons passing through an object and the number of muons in the sky. The muon detector of the application adds a layer of lead plate between the three detection planes, which can effectively shield gamma particles in the air, reduce background noise interference and improve imaging accuracy.

This invention discloses a muon track reconstruction method and imaging method based on a muon detector, comprising the following steps: S1, determining the azimuth angles of the first, second, and third scintillators hit by the muon in any muon penetration event; S2, determining the x and y coordinates of the muon's incident and exit points based on the azimuth angle of the first scintillator; determining the z-axis coordinates of the muon's incident and exit points based on the azimuth angles of the second and third scintillators; S3, determining the muon's track based on the x, y, and z-axis coordinates of the incident and exit points. Compared with existing technologies, this invention significantly improves the accuracy of z-axis positioning while maintaining high detection efficiency, thereby improving the accuracy of muon track reconstruction and ore body imaging.

The invention relates to a multi-data fusion muon imaging detection method and system, and belongs to the technical field of blast furnace detection imaging. The method comprises the following steps: collecting muon trajectory data penetrating through a blast furnace through muon detectors arranged around the blast furnace; spatial reconstruction is carried out based on the muon trajectory data, and a three-dimensional imaging model representing the internal density distribution of the blast furnace is constructed; obtaining multi-source observation data; wherein the multi-source observation data at least comprises thermal data and acoustic data; constructing a joint inversion objective function based on the multi-source observation data and the three-dimensional imaging model; solving the joint inversion objective function, and outputting state imaging distribution based on blast furnace three-dimensional imaging; wherein the state imaging distribution comprises material density distribution and temperature field distribution. By means of the mode, full-dimension and high-precision blast furnace internal state parameters can be obtained, and the defects that a traditional sensor is incomplete in single parameter coverage and insufficient in detection precision are overcome.

The invention belongs to the technical field of cosmic ray detection, and provides an LED track visualization device for playing muon detector examples, which comprises a cap-shaped nut, an acrylic lamp holder front panel, an acrylic strip group, a screw rod, a second nut, a fixed frame, an LED display circuit board with an embedded STM32 microcontroller, a flat screw, a fixed plate, a Raspberry Pi 4b computer and a Raspberry Pi protective cover. According to the invention, through the acrylic strip group, the LED display circuit board and the Raspberry Pi 4b computer, the data processing flow is simplified, real-time and visual case display is realized, and portability and operability are realized.

The invention relates to a muon ray-based dam safety detection method and a muon detection device, and belongs to the field of dam safety detection. The method comprises the following steps: firstly, receiving a first muon ray at the current moment through a muon detection device comprising a muon detector array; as long as adjacent muon detectors in the muon detector array flicker continuously in a set time range, it is determined that the muon detectors are excited by the same muon ray, then the incident direction of the muon ray is obtained according to an excitation point corresponding to the muon ray, and when the incident direction is in a set direction range, the muon detector array is excited by the same muon ray. And determining that the muon ray is a second muon ray penetrating through the detected dam, thereby carrying out safety detection on the detected dam according to the second muon ray. According to the method, the muon rays penetrating through the tested dam are effectively screened out from the received muon rays, and the internal structure change of the tested dam is deduced according to the muon rays penetrating through the tested dam, so that the safety of the tested dam is evaluated.

The invention relates to a muon-based blast furnace refractory material layer analysis system and method, and belongs to the technical field of muon detection. The system comprises three groups of first muon detectors which are arranged at intervals of 120 degrees along the circumferential direction of the blast furnace; the included angle between the detection direction of each group of first muon detectors and the horizontal plane is alpha; 15 degrees < = alpha < = 45 degrees; the three groups of second muon detectors are arranged at intervals of 120 degrees along the circumferential direction of the blast furnace; the included angle between the detection direction of each group of second muon detectors and the horizontal plane is beta; 45 DEG < = beta < = 75 DEG; and the data processing module is used for carrying out three-dimensional reconstruction based on the muon detection data and carrying out blast furnace refractory material layer analysis based on a three-dimensional imaging result. By means of the mode, the method can be accurately focused on key areas where blast furnace stress is concentrated and damage is most likely to happen, accurate coverage of blast furnace refractory material layer damage high-risk areas is achieved, and non-contact, non-stop and 24-hour continuous monitoring can be achieved.

The application discloses a kind of based on cosmic muon tunnel stratum monitoring early warning method and system, it obtains the average value and standard deviation of surface cosmic muon flux first, then real-time acquisition is monitored point in each preset time period Tunnel cosmic muon flux, based on the average value of surface cosmic muon flux and tunnel cosmic muon flux Calculation obtains the muon flux attenuation value in each preset time period, if the muon flux attenuation value in a certain preset time period exceeds preset threshold range, then judge stratum suspect to appear change, trigger overrun alarm, using cosmic muon flux attenuation value as monitoring index, its change directly reflects the change of stratum structure, without relying on complex geological survey, and the stability of muon detector is strong, service life is long, very suitable for needing continuous, stable monitoring tunnel stratum safety monitoring project, significantly improve the accuracy and reliability of tunnel stratum monitoring result.

The present application relates to the field of geophysical exploration technology, specifically to a seismic tomography inversion constraint method based on downhole muon density imaging; the method comprises: arranging muon detectors and seismic detectors in an exploration well, arranging a seismic source on the ground to form a well-ground joint observation system; collecting downhole muon flux and track data, eliminating system errors such as casing and well fluid through noise removal and Geant4 simulation correction to generate a high-precision three-dimensional density model; synchronously collecting seismic first arrival travel time data, taking the muon density model as a priori to construct a grid-matched initial velocity model; constructing a total objective function containing seismic travel time fitting, muon density constraint and regularization term, and dynamically adjusting the density constraint weight according to the depth and signal-to-noise ratio; adopting a coarse-scale and fine-scale layered iteration strategy for inversion, outputting a velocity-density coupled model after convergence, and verifying through drilling cores. The present application realizes high-precision muon-constrained seismic imaging.

A borehole muon detector (100, 200, 500, 600, 602) for deployment in wellbores comprises a cylindrical housing (104); a processing section (120), dedicated for data processing; at least one detection section (106, 206) with at least two detection means (102, 202, 302, 312), wherein each detection means (102, 202, 302, 312) is preferably a coextruded support (306, 316) and scintillator (304, 314) structure. A method of detecting muons comprises providing at least one borehole muon detector (100, 200, 500, 600, 602); position the at least one borehole muon detector in a well bore; measuring the trajectory and velocity of the muons in the muon detector.

The invention discloses a combined underground muon imaging while-drilling device and system. The while-drilling device comprises a combined drill rod; the combined drill rod comprises at least two connecting rods, a measuring section and a drill bit; the at least two connecting rods and the drill bit are sequentially connected in the axial direction. The measuring joints are mounted between the two adjacent connecting rods; the measuring section is provided with a muon imaging detector module, and the muon imaging detector module is used for measuring stratum density difference data. According to the geological exploration requirement, the device can be installed between any adjacent connecting rods so as to adjust the measurement position of the muon imaging detector; the miniaturized muon detector also solves the problems of large size, poor temperature and pressure resistance, vibration interference and the like of the muon detector, is adaptive to the combined drill rod, and can be conveniently assembled and quickly used according to measurement requirements.

This application discloses a cosmic ray-based remote sensing method for detecting the internal state of a volcano. The method comprises the following steps: placing at least one muon detector at a preset observation point, collecting muon information at the observation point, repeating the above steps, and then collecting the muon incidence angle and a second muon flux corresponding to the muon incidence angle of the volcano to be measured; calculating the muon attenuation flux; obtaining a volcano density structure table, searching for and obtaining the target density length in the volcano density structure table; analyzing the volcano's topography to obtain volcano contours, where the volcano contours are obtained using the GP map function; calculating the volcano's structural density from the volcano's external dimensions and density length; comparing the volcano's structural density with a preset density threshold, where the preset density threshold is the volcano's theoretical density value; and if the volcano's structural density is not equal to the volcano's theoretical density value, determining that there is a risk in the volcano's geological exploration in the muon incidence direction, thereby enabling monitoring of the volcano's internal state.