28results about "Luminescent dosimeters" patented technology

The invention discloses a radiation dose detection method and system for an irradiation cross-linked area, and belongs to the technical field of radiation dose detection.The method specifically comprises the steps that coordinates of a to-be-detected core point and coordinates of related points around the to-be-detected core point are input, and transient fluorescence spectrums, thermoluminescence signals and conductivity change data of all the points in an irradiation window are synchronously collected; constructing a physical configuration association model based on association point distribution, and forming a scattered field association data network; when the residual error between the actually measured data of the core point and the model predicted value exceeds a dynamic threshold value, activating the reverse solving process of the scattered field, reversely reconstructing a theoretical data sequence of the core point by using associated node data, and replacing interfered original data; and finally, inputting the reconstructed sequence into a dose calculation model, and outputting a corrected radiation dose value. According to the invention, measurement errors caused by local material non-uniformity and instantaneous interference can be effectively reduced, and the reliability of dose detection is improved.

The application provides a radiation total dose detection system and method based on a radiation color-changing film, and the system comprises a luminosity detection system, a chroma detection system and a calculation module; the luminosity detection system is used for detecting the change of light power transmitted by the first radiation color-changing film; the chroma detection system is used for acquiring the image of the second radiation color-changing film; and the calculation module is used for determining the radiation total dose according to the change of light power and / or the image. The application is based on the corresponding relationship between the transmittance of the radiation color-changing film and the received radiation total dose, that is, when the light power loss transmitted by the film increases, the transmittance of the film decreases, and the received radiation total dose increases; when the color of the film image deepens, the transmittance of the film decreases, and the radiation total dose increases. Thus, the real-time monitoring of the radiation dose is carried out from two angles of the change of transmitted light power and the change of image color, respectively, and the online detection of the radiation total dose of the target environment is realized.

The invention discloses a nuclear power radiation monitoring system and method.The nuclear power radiation monitoring system comprises an access control system, a radiation monitoring system, a cold dressing system, a channel monitoring system and a statistical prediction system.The access control system is arranged at an inlet and an outlet of a nuclear power plant, and the channel monitoring system is arranged in a channel of the nuclear power plant; the cold dressing system is arranged in the cold dressing room; the access control system is used for judging whether the personnel can enter or exit from the radiation control area according to the accumulated radiation value; the radiation monitoring system is used for collecting real-time radiation values and vital sign data of personnel; the cold dressing system is used for prompting dressing information and distributing dosimeters; the channel monitoring system is used for collecting radioactive contamination values and environmental radiation values of personnel in a channel; and the statistical prediction system is used for recording personnel identity information and predicting a future radiation value of the personnel.

The utility model relates to the technical field of measuring instrument storage, in particular to a portable thermoluminescence dosage measuring instrument. The measuring instrument comprises an outer box and a measuring instrument body, a sliding drawing mechanism is arranged outside the outer box, the sliding drawing mechanism comprises a sliding cover arranged on one side of the outer box in a sliding mode, and the sliding cover and the measuring instrument body are fixedly arranged. According to the device, rapid taking and placing of the measuring instrument body are achieved through the sliding drawing mechanism, the sliding cover and the measuring instrument body are fixedly connected through the first fixing bolt, and by means of sliding fit of a sliding block and a sliding groove and detachable connection of a buckle, the measuring instrument body can be rapidly taken and placed. A user only needs to open the buckle and pull the sliding cover to pull the whole measuring instrument body out of the outer box, the tedious step that a traditional instrument needs to be separated from an anti-seismic structure is omitted, the operation process is greatly simplified, meanwhile, the sliding drawing mechanism has the limiting function, the relative stability of the measuring instrument body and the outer box in the carrying process is ensured, and the measuring instrument is convenient to carry. And the shaking risk is avoided.

The application relates to a ratio type radiation sensing device with nonlinear response to dose rate and a use method thereof, and relates to a scintillator radiation measuring device with nonlinear change of luminous intensity and use method, and aims to solve the technical problems of low measuring precision, complex structure, poor reliability, poor real-time performance and poor applicability of existing radiation sensors. The ratio type radiation sensing device with nonlinear response to dose rate comprises an X-ray excitation module, a mixed sensing probe and a light signal collection module; wherein the mixed sensing probe is a round piece pressed by uniformly mixing NaLuF4:3Pr,5Er nanocrystals and NaLuF4:3Ce nanocrystals. The use method of the device is a standard curve method. The device can realize accurate detection in a wide range of 1.86-14.95 mGy / s, and can be used in the fields of environmental monitoring, biomedical imaging and public security inspection.

The utility model relates to a kind of card holder device of thermoluminescence dosimeter dose card, comprising: fixed shell, the inner cavity of fixed shell is inserted with the compatible carrier plate, recess is set in the top middle part of carrier plate, cover is connected in recess, receiving groove is set in the bottom two sides of recess inner cavity;Further comprising: limiting component, limiting component is set in the bottom of carrier plate, limiting component includes movable plate, spring is fixed in the top middle part of movable plate, the outer end of spring and the bottom of fixed shell are fixedly connected, the top two sides of movable plate are fixed with limiting post, limiting post is movably penetrated in fixed shell, the bottom of carrier plate is set with positioning hole corresponding limiting post, limiting post is inserted in positioning hole, the utility model is placed in receiving groove after dosimeter piece, and carrier plate is inserted into the inner cavity of fixed shell, and limiting component can be inserted in positioning hole to limit carrier plate, so as to be favorable to avoid the situation that dose card is easy to fall off after wear.

The present invention relates to an integrated dosimeter comprising: a plurality of filters having different energy responses according to the type of incident radiation; a dose unit including a plurality of dose elements which are positioned to correspond to each filter and which generate light by radiation passing through each filter; and a plurality of optical amplification elements for converting the light generated from each dose element into current signals, wherein the plurality of filters include: a first filter, a second filter and a third filter having selective energy responses to beta rays, gamma rays and X-rays, respectively; and a fourth filter and a fifth filter having selective energy responses to neutrons, and also having selective energy responses to energy level of the neutrons.

The application discloses a preparation method and application of a halogenated 2,1,3-benzothiadi-azolyl blue light molecule, and the method comprises the following steps: taking 2,1,3-benzothiadi-azolyl as a parent body, and coupling corresponding boric acid and a halogenated acceptor in a mixed solvent of tetrahydrofuran and water under the action of a palladium catalyst to obtain a target product after purification. The molecule shows obvious hybridization and charge transfer properties, realizes high triplet exciton utilization rate through a high-energy state reverse intersystem crossing process, effectively enhances spin-orbital coupling by introducing heavy atoms, and improves the absorption capacity to high-energy radiation, so that the molecule has the outstanding advantages of super-short fluorescent lifetime and high photoluminescence efficiency, and provides a new solution for developing a new generation of organic luminescent materials with super-short lifetime, high efficiency and low cost.

The utility model relates to the fixed field of dose card, concretely relates to a kind of fixing device of thermoluminescence dosimeter dose card.It includes fixed shell, the inside sliding connection of fixed shell has dose card body.The utility model is through the mechanical clamping of moving rod and card block, cooperate the elastic limit of spring piece and the elastic limit of dose card body clamping groove, form double fixed structure, when dose card body is pushed into fixed shell, moving rod is slid along moving trajectory groove to the card block gap groove and completes clamping, can bear external force and not loose when pulling;At the same time, spring piece is embedded in the clamping groove of dose card body, limit its vertical direction displacement, ensure that dose card still keep stable when being vibrated, collided or personnel movement, will not occur displacement or overturn, effectively avoid the radiation measurement error caused by position change, guarantee the accuracy of measurement data;And, only dose card body is pressed inwards again, unlocking mechanism can be triggered, pressing action promotes moving rod from card block gap groove and separates.

A biodegradable wireless dosimetry system (100) for in vivo verification of radiotherapy, wherein the system (100) comprises: a biodegradable wireless in vivo dosimeter unit (1); and an external reading unit (2) wirelessly coupled to the biodegradable wireless in vivo dosimeter unit (1); the biodegradable wireless in vivo dosimeter unit (1) comprises: a power receiving and rectifying unit (PWR) comprising a near-field receiver (3) and a rectifier (4) implemented with at least one biodegradable conductor or biodegradable compound (5), wherein the power receiving and rectifying unit (PWR) is configured to receive electromagnetic energy from the external reading unit (2) and generate a DC power supply; an energy buffer block (ENB) comprising a biodegradable electrochemical energy buffer (6) configured as a Zn-ion hybrid micro-supercapacitor (7), electrically coupled to the rectifier (4) and designed to stabilize the DC power supply during intermittent wireless coupling; a radiation sensor block (RSB) with a radiation transduction module (8) configured to generate a dose-proportional signal in response to absorbed ionizing radiation; an optional physiological sensor block (PSB) with at least one additional physiological sensor (20); a telemetry and control block (TCB) (40) configured to process the dose-proportional signal and all physiological sensor signals and to provide wireless telemetry to the external reading unit (2); and a resorbable encapsulation block (9) enclosing the near-field receiver (3), rectifier (4), energy buffer (6, 7), radiation transduction module (8), physiological auxiliary sensor (20) and telemetry and control block (40), wherein the resorbable encapsulation block (9) is configured to maintain the integrity of the device during a predefined clinical monitoring period and is subsequently biodegraded under physiological conditions; wherein the external reading unit (2) comprises a corresponding block diagram architecture: a coupling and power transfer block (CPB) with a transmit / receive coil (35) configured to couple with the near-field receiver (3) and to power the biodegradable wireless in vivo dosimeter unit (1); a signal processing block (SPB) (36) configured to demodulate and process telemetry data received from the telemetry and control block (40); a memory block (38) configured to store calibration data and measured dose information; and a user interface block (37) configured to display at least one parameter indicating the absorbed dose for verification of a radiotherapy plan, wherein the blocks (PWR, ENB, RSB, PSB, TCB, CPB, SPB, memory block (38) and user interface block (37)) are arranged such that a block diagram of the system (100) is defined by these functional units and their interconnections.

The present invention relates to a method for analyzing a radiation dose to which a thermoluminescent dosimeter element is exposed, and to an analysis device therefor. The analysis method according to the present invention comprises the steps of: heating an exposed thermoluminescent dosimeter element and measuring light emitted for each channel according to temperature; converting the measured light into charge amounts to obtain a glow curve; and removing spikes corresponding to outliers from the glow curve, wherein the removing the spikes includes: for charge amounts of m consecutive channels, if a difference in charge amounts between the last two channels exceeds a threshold value, correcting the charge amount of the last channel by extrapolating charge amount of the preceding three channels, where m is an integer from 4 to 10.

The present invention describes a dosimetry system (100) for use in an irradiation system (200) for radiology or radiotherapy. The dosimetry system (100) comprises an at least two dimensional, radioluminescent, irradiation detection surface (110) comprising radiosensitive material, the radiosensitive material having radioluminescent properties. The system (100) also comprises a detection system (120) configured for detecting radioluminescent radiation from the at least two dimensional detection surface (110) upon irradiation with a radiology or radiotherapy irradiating beam. The detection system (120) comprises a detector (130) sensitive for radioluminescence and a filter (140) for at least partially blocking radiation from said radiology or radiotherapy irradiating beam and ambient light.

A florescent radiation dose rate sensor includes a nitrogen-vacancy diamond; a light detection system having a photon detection element and an optical filter, and wherein the light detection system is configured to receive light, filter the light, and detect photon flux of the light; and an optical assembly configured to deliver excitation light to and collect scattered florescent light from the NV diamond and configured to optically couple the NV diamond to the light detection system.

The utility model relates to the technical field of square cabins, and discloses a modularized medical rescue square cabin system, which comprises a decontamination square cabin, a dose detection square cabin and a first-aid square cabin, the decontamination square cabin comprises a dressing initial examination room, a decontamination room, a skin drying room and a reexamination room which are communicated in sequence, the decontamination room is provided with a first decontamination device, the dose detection square cabin comprises a detection room, and the detection room is provided with a second decontamination device. The detection room is provided with an internal and external irradiation dose detection device, the first-aid shelter comprises a first-aid room, and the first-aid room is provided with a decontamination treatment bed and a second decontamination device. According to the modularized medical rescue shelter system, the three modularized shelters with different functions are arranged to form the modularized medical rescue shelter system, people can be reasonably classified and disposed in a targeted mode according to radioactive contamination conditions of different people, and targeted rescue of the people is facilitated.

The invention relates to the technical field of medical ring dosimeters, in particular to an operating device of a hand ring dosimeter for external irradiation personal dose monitoring, the operating device fixes the hand ring dosimeter through a mounting assembly, and a disinfection part and an identification generation part are arranged in the operating device. A first sliding seat and a second sliding seat in the operating device are connected with the mounting assembly through a detachable structure; the first sliding seat and the second sliding seat are arranged on the rotating arm in a sliding mode, the rotating arm is supported on the lifting seat in a rotating mode, and the lifting seat is arranged on the lifting driving part. The operation device moves the hand ring dosimeter to the identification generation part, and wearer information is generated on the identification part of the hand ring dosimeter; and the operating device moves the hand ring dosimeter into the disinfection part for soaking and disinfection.

This invention discloses a temperature calibration device for a thermoluminescence measurement system, belonging to the field of thermoluminescence measurement technology. The device includes a sample assembly connected to a photomultiplier tube assembly, which is linked to an intelligent control module. The intelligent control module is connected to a heating device, which is in turn connected to the sample assembly. The intelligent control module includes a temperature detection and heating control circuit and a signal processing and intelligent control circuit. It calculates the cumulative CPS value and average CPS value of each thermoluminescent sheet in the sample assembly based on pulse signals, thereby calculating the relative error of each thermoluminescent sheet. Based on the relative error, it generates a heating control signal and outputs it to the heating device to adjust the heating temperature and perform different temperature compensations on each thermoluminescent sheet, ensuring the overall sample assembly is always in optimal operating condition. This invention improves the reliability of the system measurement by adding a temperature calibration function.

Apparatus and methods for curing adhesives in a robotic assembly cell and evaluating the curing at a same time or in parallel are disclosed. An apparatus in accordance with an aspect of the present disclosure comprises a radiation source configured to emit radiation to cure an adhesive in a curing area during an assembly process, a radiation guide configured to transmit the radiation emitted from the radiation source to the curing area, and a sensor configured to measure a reflection of the transmitted radiation reflected off the curing area during the curing of the adhesive, wherein the sensor is positioned proximate to the radiation guide; and a controller configured to determine whether the measured reflection satisfies a threshold and, based on a determination that the measured reflection does not satisfy the threshold, to signal a remedial action of the assembly process.

The embodiment of the invention relates to the technical field of nuclear reactor monitoring, in particular to a radiation monitoring device which comprises a radiation monitoring device body, a radiation detection part, a laser scanning part and a control analysis part, and the radiation monitoring device body is arranged to protect the laser scanning part and the control analysis part to reduce nuclear radiation. And the driving part can drive the radiation detection part and the laser scanning part to rotate. The radiation monitoring device can accurately and comprehensively determine the nuclear radiation dose level in a nuclear accident area, obtain the nuclear leakage degree in the nuclear accident area and accurately obtain the specific nuclear facility fault condition, powerful technical support is provided for emergency work after an accident, and it is guaranteed that the emergency work is carried out timely and safely.

The embodiment of the invention discloses a radiation dose monitoring system and method fusing accurate positioning data. The system comprises a thermoluminescence dosimeter assembly, a thermoluminescence meter assembly and a data processing cloud platform. The thermoluminescent dosimeter assembly comprises: a thermoluminescent dosimeter unit for accumulating radiation dose data; the positioning unit is used for determining accurate positioning data; the main control and storage unit is used for controlling the thermoluminescence dosimeter unit and the positioning unit and storing accurate positioning data; the near field communication unit is used for transmitting data; the thermoluminescence meter assembly comprises: a thermoluminescence meter unit for measuring a cumulative radiation dose; the information acquisition unit is used for acquiring accurate positioning data; the multifunctional communication unit is used for receiving and remotely transmitting data; the data storage unit is used for storing data; the data processing unit is used for preprocessing the data; the data processing cloud platform comprises a data primary processing unit, a multi-source data fusion unit and a data output unit.

Apparatuses and methods for curing adhesive and simultaneously or in parallel evaluating curing in a robotic assembly unit are disclosed. An apparatus according to aspects of the present disclosure includes a radiation source configured to emit radiation during an assembly process to cure an adhesive in a cured region; a radiation guide configured to transmit radiation emitted from the radiation source to the curing area; and a sensor configured to measure a reflection of the transmitted radiation reflected back from the curing area during curing of the adhesive, where the sensor is located proximate the radiation guide; and a controller configured to determine whether the measured reflections meet a threshold, and to signal a remedial action of the assembly process based on the determination that the measured reflections do not meet the threshold.

The particle source dose distribution measurement device and method provided in this application include a chassis, a mounting bracket, and multiple measuring brackets. The mounting bracket has a first mounting portion for mounting a particle source. Multiple measuring brackets are mounted on the chassis, spaced apart around the periphery of the mounting bracket, and each bracket is radially movable to move away from or towards the mounting bracket. Each measuring bracket has a second mounting portion for mounting a passive dosimeter. The positions of the first and second mounting portions satisfy the following condition: when the particle source is mounted on the first mounting portion and the passive dosimeter is mounted on the second mounting portion, the passive dosimeter is aligned with the center of the particle source. The particle source dose distribution measurement device of this application can improve the accuracy of particle source dose distribution measurement.

The invention provides a thermoluminescent film for a cumulative X-ray dosimeter as well as a preparation method and application of the thermoluminescent film. The preparation method comprises the following steps: preparing powder C by taking NH4F, NaF, Lu (NO3) 36H2O and Tb (NO3) 36H2O as raw materials; the powder C is subjected to an induction heating-stirring reaction, and after the reaction is finished, rare earth fluoride D is obtained; adding rare earth fluoride D and PMMA particles into an ethanol solution, transferring the obtained mixed solution into a dichloromethane solution, and continuously stirring to form a mixed solution E; weighing a polydimethylsiloxane prepolymer and a curing agent, then adding a dichloromethane solution, and carrying out ultrasonic treatment to form a uniform dispersion F; under a normal-temperature stirring condition, adding the dispersion F into the mixed solution E to obtain a gelatinous mixture G; transferring the gelatinous mixture G to a pretreated substrate, blade-coating the substrate with the gelatinous mixture G, heating and annealing, cooling to room temperature, and taking down the film to obtain the thermoluminescent film for the cumulative X-ray dosimeter.

The utility model discloses a memory, electronic equipment and a detection system. The memory comprises a substrate, at least one semiconductor device, an encapsulation layer and an optical function layer. Wherein one side, deviating from the substrate, of the packaging layer is provided with the optical function layer, and the optical function layer can store radiation energy after being irradiated by rays and release visible light under the excitation of external exciting light, so that the X-ray radiation dose borne by the memory can be reflected based on the visible light released by the optical function layer. Therefore, in the production and quality inspection process of the memory, the X-ray radiation dose borne by the memory can be detected in time, and quality judgment and risk identification are performed on the memory according to the X-ray radiation dose, so that the memory can be prevented from being damaged by excessive radiation, and the quality control precision and efficiency of the memory can be improved.

The invention provides a medical radiation protection early warning method and device based on personal dose monitoring, and is applied to the technical field of data processing. According to the method, the standardized dose monitoring sequence is generated through multi-source data fusion and adaptive filtering, and then the individualized radiation accumulation model is constructed through Monte Carlo simulation and stratified sampling. On the basis of time-dose dependence characteristics, a linear quadratic model is coupled with a dose rate correction term to construct an evaluation equation, and the key organ absorbed dose is calculated in combination with a dynamic dose conversion matrix. Through data comparison, abnormal signals are identified, damage acceleration factors are defined, health archives are combined for grouping, a random forest algorithm is used for constructing a personalized early warning model, finally graded early warning and protection suggestions are output, and a complete early warning chain is formed.

The application discloses a kind of boron neutron capture therapy beam gamma dose measurement methods, it is related to radiotherapy technical field, first thermoluminescence dosimeter is standardized annealing pretreatment, and screening, numbering;Positioning and calibration are carried out to water equivalent phantom fixed on treatment bed, complete reference positioning;Thermoluminescence dosimeter is loaded in water equivalent phantom and is irradiated again;After irradiation, take out phantom, establish the one-to-one correspondence between unique number and its three-dimensional space position in phantom, and record;First measurement and second measurement are carried out to all dosimeters in turn, calculate thermoluminescence net gamma count, obtain absorbed dose value;Thermoluminescence dosimeter is annealed again, for subsequent circulation use conveniently.The application in the application multiple thermoluminescence dosimeters are irradiated simultaneously, shorten time;Two independent measurements, deduct interference signal;Complex operation process standardization, programming, improve measurement repeatability and efficiency, convenient, novel, accurate.

This invention discloses a method and system for detecting radiation dose in irradiated cross-linked regions, belonging to the field of radiation dose detection technology. Specifically, it includes: inputting the coordinates of the core point to be measured and the coordinates of its surrounding associated points, and simultaneously acquiring transient fluorescence spectra, thermoluminescence signals, and conductivity variation data of each point within the irradiation window; constructing a physical configuration association model based on the distribution of associated points to form a scattered field association data network; when the residual between the measured data of the core point and the model prediction exceeds a dynamic threshold, activating the inverse solution process of the scattered field, using the associated node data to reconstruct the theoretical data sequence of the core point, replacing the disturbed original data; finally, inputting the reconstructed sequence into the dose calculation model, and outputting the corrected radiation dose value. This invention can effectively reduce measurement errors caused by local material inhomogeneity and transient interference, improving the reliability of dose detection.

The invention discloses a multifunctional thermoluminescence heating plate. Reliable positioning and thermal contact can be provided for samples in various shapes on the same heating plate. Comprising a heating base, a heating plate body groove is formed in the heating base, and the heating plate body groove comprises a wafer fixing part used for limiting a wafer-shaped sample, a square fixing part used for limiting a square-shaped sample and a cylindrical fixing part used for limiting a glass cylindrical sample; the wafer fixing part comprises a circular base groove, an upper arc positioning part and a lower arc positioning part, wherein the upper arc positioning part and the lower arc positioning part are arranged on the two sides of the circular base groove respectively and symmetrically distributed relative to the two vertical diameters of the circular base groove. The end points of the two sides of the upper arc positioning part are each provided with a set of upper right-angle positioning part. A group of lower right-angle positioning parts is arranged on each of the two sides of the lower arc positioning part; the square fixing part comprises an upper right-angle positioning part and a lower right-angle positioning part; a left limiting clamping part and a right limiting clamping part are arranged between the upper arc positioning part and the lower arc positioning part; the cylindrical fixing part comprises a left limiting clamping part and a right limiting clamping part.