34 results about "Radiation testing" patented technology

The invention relates to the technical field of SRAM (Static Random Access Memory) memory anti-radiation testing, and discloses an SRAM memory anti-radiation testing method and system based on running state injection, and the method comprises the following steps: system initialization, mapping preparation and time sequence baseline establishment; carrying out model quantitative compiling, sensitivity analysis and physical bit candidate generation; generating a running state injection plan and loading a test case; performing operation state execution, disturbance injection and synchronous monitoring acquisition; multi-source triggering, weight read-back and fault decoupling judgment are carried out; and performing quantitative evaluation on anti-radiation performance, constructing a degradation curve and outputting a report. The system corresponds to the method. According to the invention, a hardware-in-the-loop operation state injection and online evaluation technology is constructed, and the technical problems of guidance and position limited disturbance / equivalent irradiation injection based on weight bit level sensitivity and logic-physical mapping are solved.

The utility model discloses an in-situ synchrotron radiation device for testing a core element of a thin film capacitor, and belongs to in-situ synchrotron radiation testing equipment. In order to achieve in-situ synchrotron radiation testing of a core element of the thin-film capacitor, the core element is installed in a containing cavity of a shell, a temperature control mechanism is installed on the shell and adjusts the temperature of the containing cavity of the shell, and a high-voltage polarization power source is connected with the two ends of the core element to apply voltage. The pressure regulating mechanism comprises two pressure regulating plates and a pressure regulating driving assembly, the two pressure regulating plates are respectively mounted on two sides of the core element, and the pressure regulating driving assembly is connected with the two pressure regulating plates and regulates the distance between the two pressure regulating plates; the synchrotron radiation light source and the signal receiving plate are respectively arranged at two sides of the shell, two side walls of the shell are respectively provided with a light hole I, each pressure regulating plate is provided with a light hole II, the synchrotron radiation light source emits x-rays, the x-rays irradiate the core element, and then the x-rays are received by the signal receiving plate. The device is used for realizing the in-situ synchrotron radiation test of the core element.

The utility model relates to the technical field of thermal radiation testing equipment, and particularly provides a surface thermal radiation testing device, which comprises a fixed bracket, a heating substrate and a first receiving substrate, and is characterized in that the fixed bracket is provided with a hollow cavity; the emission substrate is vertically arranged in the hollow cavity; the emission substrate is used for emitting heat radiation; the first receiving substrate is located on one side of the transmitting substrate, and the first receiving substrate is vertically arranged in the hollow cavity; a first test space is formed between the transmitting substrate and the first receiving substrate; the transmitting substrate and the first receiving substrate respectively form a thermocouple structure, and the surface thermal radiation value of the to-be-detected material placed in the first testing space is obtained through comparison and calculation. The transmitting substrate and the first receiving substrate of the surface heat radiation testing device are both vertically arranged in the hollow cavity, and the centers of the transmitting substrate and the first receiving substrate are positioned on the same axis and are aligned, so that the result of each test can be repeated.

The application relates to the field of resistive random access memory (RRAM), and specifically discloses a total dose radiation test method for RRAM, which comprises the following steps: grouping a plurality of RRAMs to obtain M groups of RRAMs, each group of RRAMs comprising N RRAMs, and the M groups of RRAMs corresponding to M initial resistance states respectively; performing a total dose radiation experiment on the M groups of RRAMs; and performing a cycle endurance experiment on the M groups of RRAMs, wherein the result of the cycle endurance experiment is used to indicate a test result of the RRAMs related to the total dose radiation. Through the test method, the change in the endurance of the RRAMs after being subjected to total dose radiation can be simulated, so as to provide an optimization scheme for the application of the RRAMs in a total dose radiation environment.

The present application relates to the technical field of aircraft testing, and discloses a radiation and conduction overlapping frequency band HIRF comprehensive sensitivity test device and a test method, the device comprising a reverberation chamber and a test control system, a grounding panel and a support seat are arranged in the reverberation chamber, the support seat is arranged on the grounding panel, a device under test is placed on the upper surface of the support seat, a stirrer is arranged at a corner of the reverberation chamber, and the test control system is in bidirectional communication with a signal generation and processing system, an adaptive delay compensation system, a radiation test system, a conduction test system, an optoelectronic conversion system and a measurement receiver. The present application aligns the arrival time of a radiation field and conduction interference at the device under test through the adaptive delay compensation system, reproduces the electromagnetic energy synchronous coupling effect in the HIRF environment, combines field strength closed-loop control and conduction current monitoring feedback, synchronously applies a radiation field strength and wire bundle injection current that meet standard levels, and realizes verification of the coupling mechanism of radiation-conduction comprehensive sensitivity.

The present application relates to a kind of separation identification and monitoring method and system of radiation background noise, in separation identification and monitoring method, background noise and equipment emission signal are synchronously collected by multiple fixed reference antennas and main antenna, and time synchronization is realized by central synchronous unit.First, based on spectrum comparison, background noise probability is calculated, and first grade is filtered out;Second, baseline model is established according to reference antenna data, abnormal signal is identified and its source is judged, and burst background noise and equipment real emission are distinguished;Second grade is filtered out by using pre-stored feature library for matching identification;Finally, the comparison result of real emission signal and background noise after filtering is displayed on test interface, and the data exceeding the standard is automatically marked, test margin is calculated and conclusion is generated.Compared with prior art, the present application can effectively solve the technical problem that background noise and equipment signal are difficult to separate in real time and accurately in complex electromagnetic environment, and the reliability and efficiency of radiation test are significantly improved.

A ceramic scintillator of an embodiment includes a sintered body of a gadolinium oxysulfide phosphor containing praseodymium as a main activator. When a body color of the sintered body is represented by chromaticity coordinates (x, y) based on a CIE1931 chromaticity value, the sintered body has a body color satisfying 0.4≤x≤0.505 . . . (1) and 0.83x+0.075≤y≤0.83x+0.095 . . . (2). The ceramic scintillator of the embodiment is obtained by a method for manufacturing a ceramic scintillator, the method including a heat treatment step of causing a reaction gas containing oxygen and sulfur to react with the sintered body. A heat treatment time in the heat treatment step is 1 hour or more and 50 hours or less.

The invention relates to the technical field of radiation testing, in particular to an ash content detection system which comprises an in-furnace weighing assembly and a firing furnace, the firing furnace is installed on a construction detection base plane, and a sample detection table and a feeding transmission assembly are arranged on the two sides of the firing furnace respectively. A detection end processing mechanism is mounted between the sample detection table and the firing furnace, a temperature testing assembly is mounted between the detection end processing mechanism and the sample detection table, and a first-stage firing detection assembly and a second-stage non-inductive ash content detection assembly are arranged at one end of the feeding transmission assembly; secondary approval detection is completed by the primary burning detection assembly and the secondary non-inductive ash content detection assembly, abnormal data error correction and internal cross validation are realized, detection deviation caused by non-representative data of coal samples is avoided, accidental errors caused by reasons such as equipment abnormity and unevenness of the coal samples in single-time detection are effectively identified, and the detection accuracy is improved. And the reliability of a detection result is obviously improved.

The invention provides a charged particle bundling device for aerospace product radiation simulation and a manufacturing method. The charged particle bundling device comprises an axis closing cavity, a deflection magnet assembly and a magnetic field detection and control system. The axis combining cavity is of a three-way structure and comprises an electron beam pipeline and a proton beam pipeline; the deflection magnet assembly comprises side magnet yokes, magnet yokes and magnetic poles, the magnetic poles are connected with the inner sides of the upper magnet yoke and the lower magnet yoke respectively, and the three-way convergence part of the shaft combining cavity is located between the upper magnetic pole and the lower magnetic pole. The magnetic field detection and control system comprises an excitation coil, a Hall magnetic field detector, an excitation power supply and a display control device; the excitation coil is wound on the side magnet yoke and is connected with an excitation power supply; and the Hall magnetic field detector is positioned in the cavity between the upper magnetic pole and the lower magnetic pole and is connected with the out-of-cavity display control device through an electric connector. Through the three-way structure design of the axis closing cavity, the proton beam and the electron beam can be effectively subjected to axis closing, and the requirement that a sample irradiates two kinds of particle beams at the same time in a comprehensive radiation test is met.

The utility model belongs to the field of light radiation test technology especially relates to radiation test system, including work table, rotary table, clamping mechanism, support column, lifting mechanism, test antenna, be equipped with rotatable rotary table on work table, the centre of rotary table is equipped with positioning hole, rotary table still is equipped with clamping mechanism, is used for clamping the lamp to be measured, makes the lamp to be measured axis perpendicular to positioning hole axis, work table one side is equipped with support column, be equipped with lifting mechanism on support column, the lifting end of lifting mechanism is connected with an installation frame, and test antenna is installed on the installation frame, makes test antenna towards clamping mechanism. Adjust the ground clearance of test antenna through lifting mechanism, can ensure that the light emitting surface center of lamp to be measured and test antenna keep the same horizontal plane, improve the precision of radiation detection. Then rotate rotary table again, adjust the light emitting angle of lamp and the height of lifting test antenna, capture the maximum radiation value of lamp space distribution, ensure the accuracy of test, reduce the detection blind area.

The invention relates to the technical field of power supply radiation testing, in particular to a power supply on-line conduction and radiation integrated testing system and method, and the system comprises a testing case, and a spectrum analyzer, an artificial network and an isolation power supply which are disposed in the testing case. The industrial control computer is in communication connection with the test case, and the industrial control computer is loaded with a system program for controlling a test process and analyzing data; the test unit is connected with the test case through a radio frequency transmission line and comprises a desktop shielding box, a test jig arranged in the desktop shielding box and a radio frequency current probe used for detecting radiation signals; wherein the system program can control the frequency spectrum analyzer to switch working modes so as to carry out conduction disturbance test or radiation disturbance test on a tested power supply arranged on the test fixture. According to the invention, integration and automation of testing are realized.

The invention provides a radiation test method and a radiation test system. The method comprises the following steps: acquiring first radiation power under a test frequency band; the first radiation power is the radiation power measured by the signal measurement assembly when the to-be-tested equipment is in a working state and the signal generation assembly is in a closed state, and the multiple frequencies in the test frequency band comprise the working frequency of the to-be-tested equipment; acquiring second radiation power under the test frequency band; the second radiation power is the radiation power measured by the signal measurement assembly when the to-be-measured equipment is in a closed state and the signal generation assembly is in a working state; determining the target transmitting power of the signal generation component when the second radiation power corresponding to each frequency in the test frequency band is equal to the first radiation power; and determining third radiation power of the to-be-tested equipment in the test frequency band based on the target transmitting power.

The invention relates to a pollution radiation test method for a high-energy photon reference radiation field, and the method comprises the steps: constructing a detector physical model of high-energy photons based on a Monte Carlo method; obtaining a measurement spectrum at a high-energy photon radiation substance calibration point through a detector physical model; calculating the measurement spectrum through a G function to obtain a high-energy photon dose rate value; simulating an HpGe detector detection efficiency curve within the energy range of 8MeV in the detector physical model to obtain a low-energy photon dose rate value; based on Co-60 isotope energy calibration, determining an electron dose rate value through an extrapolation ionization chamber; neutron isotopes are set, and a neutron dose rate value is obtained based on a long counter; and determining a dose ratio based on the dose rate value. The technical effect of obtaining the dose ratio of the high-energy photon dose rate value, the low-energy photon dose rate value, the electron dose rate value and the neutron dose rate value is achieved.

This application discloses an RF shielding device and its design method for pod testing, belonging to the technical field of pod testing. The RF shielding device includes: a shielding shell with a pod interface on its side wall, through which the pod antenna radome enters the shielding shell; an absorbing layer disposed on the inner wall of the shielding shell for absorbing the RF signal output by the pod and interference signals from outside the shielding shell; a test antenna disposed within the shielding shell for receiving the RF signal; and an RF interface disposed on the side wall of the shielding shell, connected to the test antenna for connecting to pod testing equipment. Compared to traditional anechoic chambers, this provides a convenient and safe radiation testing environment for pods, thus reducing the difficulty of pod radiation testing.

The utility model discloses a radiation test tool and system, and the tool comprises a shielding structure body and a circuit board with a communication interface. The shielding structure body is provided with a shielding cavity, and the circuit board is arranged in the shielding cavity. And the shielding structure body is also provided with a connecting port communicated with the shielding cavity. The shielding cavity is used for containing an optical module, the optical module is provided with an optical fiber interface and an electric signal interface electrically connected with the communication interface, the shielding cavity is used for containing the optical module, and the optical fiber interface penetrates through the connecting port so that at least part of the optical fiber interface can be located outside the shielding cavity. According to the scheme of the embodiment of the invention, the repeatability and traceability of the electromagnetic radiation test of the optical module can be improved.

This invention discloses a method for hazard assessment of the ship deck fuel handling environment, comprising: constructing a first-type test facility based on the ship deck fuel handling environment; conducting multi-level tests on the first-type test facility under different radiation conditions, different radiation times, and fuel vapor ignition at different test temperatures to obtain first-type test results; improving the first-type test facility to obtain a second-type test facility; controlling the test temperature in the second-type test facility to the highest temperature of the first-type test results and then starting radiation testing according to a preset frequency and power to obtain second-type test results; and conducting a hazard assessment of the ship deck fuel handling environment based on the first-type and second-type test results to obtain an assessment result. This invention enables a comprehensive assessment of the hazards of the ship deck fuel handling environment. The method not only improves the accuracy of the assessment but also provides a scientific basis for developing corresponding safety measures and operating procedures.

The present application relates to the technical field of radiation measurement with ionization chamber, and particularly relates to a radiation test method and system for a medical cyclotron. The present application firstly analyzes the change characteristics of the output current curve under the condition of the change of the polarization voltage, evaluates the saturation voltage probability coefficient of the output current curve segment corresponding to the ideal polarization voltage, then combines the ionization interference factors such as the ionization chamber environment and the change of the beam intensity of the particle beam, evaluates the radiation confidence of each output current accurately reflecting the radiation intensity, then screens and corrects the to-be-corrected current, obtains the ideal output current correction curve, and further improves the radiation test accuracy of the medical cyclotron.

The invention discloses a rotatable sample support capable of being used for in-situ synchrotron radiation soft X-ray testing, and relates to the technical field of synchrotron radiation testing. The sample support is used for solving the problems that an existing sample support is tedious in angle rotation step in a synchrotron radiation soft X-ray test, and independent rotation of a plurality of samples cannot be achieved. The sample support comprises a sample support body, a sample support bearing piece and a sample bracket. The sample bracket is provided with a screw hole and can be fixed on a sample rack for synchrotron radiation testing, the sample support is connected to the sample support bearing part through the rotatable mechanism, the sample support bearing part is fixed in a groove of the sample bracket, and the sample bracket is fixed on the sample rack through the screw hole. 0-360-degree independent angle adjustment of a single sample is realized through the rotatable mechanism, and the whole sample holder does not need to be rotated, so that the test flow is prevented from being interrupted; a plurality of sample brackets can be simultaneously mounted on the sample rack, so that independent corner testing of a plurality of samples in the synchrotron radiation sample rack is realized. The test efficiency and the data reliability are improved, and the universality is high.

The invention discloses a radiation detection device and a detection method thereof, and belongs to the field of radiation testing. Comprising a detection main body, one side surface of which forms a probe for detecting radiation conditions; a protective tube; the air pump structure is provided with an air outlet connected with the protection pipe and an air inlet communicated with the external environment; the filtering structure is arranged at the air inlet, so that the air entering the protection pipe is low-radiation or non-radiation clean air; the pressure relief structure is arranged on one side, far away from the detection main body, of the protection tube; and the sealing structure is arranged at the end part, far away from the detection main body, of the protection tube and forms a flexible or elastic sealing part. The detection device has the beneficial effects that the protection tube is filled with filtered low-radiation or non-radiation clean air through the air pump structure, and the protection tube abuts against the to-be-detected object to form a closed or semi-closed space during detection, so that dust and impurities in the protection tube are remarkably reduced, and radiation dust is prevented from interfering with a detection result.

The invention relates to a large beam monitoring device capable of being used under vacuum and high and low temperature conditions, which comprises a spherical vacuum chamber, an electron accelerator beam outlet is connected with the spherical vacuum chamber, a collector is arranged in the spherical vacuum chamber, positive high pressure is applied to the collector, and the outer wall of the spherical vacuum chamber is grounded. An electron beam of the accelerator drifts towards the collector and forms a current signal, the collector is connected with an electrometer outside the spherical vacuum chamber through a cable interface, and the spherical vacuum chamber is further provided with a temperature adjusting device. According to the invention, the influence of geometric asymmetry on electric field distribution is eliminated through the spherical symmetric design, and the measurement uniformity under a large irradiation area is improved; a titanium alloy shell and a multi-layer vacuum sealing structure are adopted, the long-term stability under extreme temperature and high vacuum conditions is ensured, and therefore a high-reliability monitoring tool is provided for spacecraft anti-radiation testing.

1. Name of the product in this design: Radiation Tester (Card-type Personal Dosimeter with β Detection Window). 2. Purpose of this design: Primarily used for testing radiation. 3. The key design feature of this product is its shape. 4. The picture or photo that best illustrates the design points: bottom view.

The invention relates to the technical field of aircraft testing, and discloses a radiation and conduction overlapped frequency band HIRF comprehensive sensitivity test device and method, the device comprises a reverberation chamber and a test control system, a grounding flat plate and a supporting seat are arranged in the reverberation chamber, the supporting seat is arranged on the grounding flat plate, a tested device is placed on the upper surface of the supporting seat, and the testing control system is connected with the testing control system. The stirrer is arranged at one corner of the reverberation chamber, and the test control system is in two-way communication with the signal generation and processing system, the self-adaptive delay compensation system, the radiation test system, the conduction test system, the photoelectric conversion system and the measurement receiver. Through an adaptive delay compensation system, arrival time of a radiation field and conducted interference at a tested device is aligned, an electromagnetic energy synchronous coupling effect in an HIRF environment is reproduced, field intensity closed-loop control and conducted current monitoring feedback are combined, radiation field intensity and wire harness injection current which meet a standard level are synchronously applied, and the electromagnetic energy synchronous coupling effect in the HIRF environment is achieved. And radiation-conduction comprehensive sensitivity coupling mechanism verification is realized.

An over-the-air radiation test system, method and tester of a wireless device, first acquires the inverse matrix of the spatial transmission matrix corresponding to multiple sub-frequency bands between the tester and the wireless device, then divides the expected test signal with a preset frequency band into expected test signals corresponding to multiple sub-frequency bands according to the frequency band, and finally loads the inverse matrix of the spatial transmission matrix corresponding to each sub-frequency band into the expected test signal corresponding to the sub-frequency band to establish a virtual cable connection between the tester and the wireless device, and to implement over-the-air radiation testing of the wireless device, solving the problem of low isolation and low testing accuracy when using the radiation two-stage (RTS) method to perform testing due to the high unevenness of the amplitude and phase in the expected test signal with a preset frequency band having a wide bandwidth.

This application relates to an irradiation testing system for nuclear power robots. The system includes an irradiation source, at least one irradiation platform, a testing device, and a central control device. The irradiation platform carries the component under test and is positioned close to the irradiation source. The testing device is connected to both the component under test and the central control device via wiring to collect electrical parameters of the component under test during irradiation. The central control device analyzes the radiation resistance of the component under test based on these electrical parameters. A first isolation component is provided between the testing device and the irradiation source. A second isolation component is provided between the central control device and the irradiation source. By collecting the electrical parameters of the component under test in real time during irradiation through the testing device and analyzing them through the central control device, online dynamic monitoring and accurate determination of the radiation resistance of the nuclear power robot are achieved, thereby improving testing accuracy.

The invention discloses a portable microwave radiation field testing device, and relates to the technical field of microwave radiation testing equipment. Comprising a weak coupling antenna (1), a programmable attenuator (2), a detector (3), a peak holding circuit (4), an AD conversion circuit (5), an MCU control circuit (6) and a touch display screen (7). The problems that traditional microwave radiation testing equipment is large in size, high in cost and low in testing efficiency are solved.

A measurement method for determining the radiation properties of a heat source is provided, wherein said measurement method comprises the following steps: arranging a heat source with a vertical orientation along its main extent or in a position angled with respect to the vertical; providing an irradiable test object with a longitudinal axis and / or at least a central axis, wherein a test object surface facing the heat source has a predetermined emissivity and is arranged at a predetermined distance from the heat source; attaching at least one temperature sensor for determining at least one surface temperature on the test object surface facing the heat source and / or at least one radiation temperature; and / or providing a temperature sensor spaced from the test object for measuring an air temperature and / or at least one radiation temperature;Emitting radiation to achieve a predetermined control temperature range of a predetermined surface of the heating source; recording the heating source temperature distribution of the predetermined surface using the spaced-away temperature sensor or another temperature sensor; analyzing the recorded measurement data to assign the predetermined control temperature range of the heating source and the air temperature to the surface temperature of the test object and / or to at least one radiation temperature. Furthermore, a system and method for controlling at least one heating source are provided.

A measurement method for determining the radiation properties of a heat source is provided, wherein said measurement method comprises the following steps: arranging a heat source with a vertical orientation along its main extent or in a position angled with respect to the vertical; providing an irradiable test object with a longitudinal axis and / or at least a central axis, wherein a test object surface facing the heat source has a predetermined emissivity and is arranged at a predetermined distance from the heat source; attaching at least one temperature sensor for determining at least one surface temperature on the test object surface facing the heat source and / or at least one radiation temperature; and / or providing a temperature sensor spaced from the test object for measuring an air temperature and / or at least one radiation temperature;Emitting radiation to achieve a predetermined control temperature range of a predetermined surface of the heat source; recording the heat source temperature distribution of the predetermined surface using the spaced-away temperature sensor or another temperature sensor; analyzing the recorded measurement data to correlate the predetermined control temperature range of the heat source and / or the air temperature with the surface temperature of the test object and / or with at least one radiation temperature. Furthermore, a system and method for controlling at least one heat source are provided.

The present invention provides a system, method, and measuring instrument for spatial radiation testing of wireless devices, which first obtains the inverse of the spatial transfer matrix corresponding to multiple sub-frequency bands between the measuring instrument and the wireless device, then divides a desired test signal having a preset frequency band into desired test signals corresponding to multiple sub-frequency bands according to the frequency bands, and finally establishes a virtual cable connection between the measuring instrument and the wireless device, and loads the inverse of the spatial transfer matrix corresponding to each sub-frequency band into the desired test signal corresponding to the corresponding sub-frequency band, so as to perform a spatial radiation test on the wireless device.The present invention solves the problems of low isolation and low test accuracy when performing testing using the radiation two-stage (RTS) method, which are caused by relatively high variations in amplitude and phase in desired test signals having a relatively wide bandwidth preset frequency band.

The application discloses a kind of near-field radiation distribution test devices of multi-iron antenna, comprising: operating frequency test module, utilizes impedance analyzer test confirmation multi-iron antenna's anti-resonance frequency, as the operating frequency of near-field radiation test;Radiation test module obtains the parasitic radiation and the magnetic electric radiation power of multi-iron antenna itself generated in test;Condition judging module judges whether satisfy greater than or equal to 6dB;If, directly to the near-field radiation distribution test of multi-iron antenna;If, design coaxial to microstrip's feed structure, to suppress the parasitic radiation generated in test process;Equivalent load is replaced using after improving feed structure to judge, and the near-field radiation test is carried out to multi-iron antenna.The application effectively suppresses the parasitic radiation in the near-field radiation test of multi-iron antenna, so that the near-field radiation distribution test of multi-iron antenna is more accurate.

The invention discloses a radiation test device of an elevator traction machine and a test method thereof, and a medium, the radiation test device comprises a loading motor, the loading motor is installed below a rotary table of an anechoic chamber through a connecting plate, the rotary table is provided with a mounting hole, and the connecting plate is connected with the rotary table; the synchronous pulley assembly is connected with the loading motor, one end, far away from the loading motor, of the synchronous pulley assembly penetrates through the mounting hole and is connected with an elevator traction machine, and the elevator traction machine is mounted on the surface of the rotary table; a radiation disturbance test device; and the control processor is in communication connection with the loading motor and the radiation disturbance testing device. The control processor controls the loading motor to drive the elevator traction machine to simulate various loading processes in the anechoic chamber, radiation testing is carried out in the process, and compared with a radiation testing scheme under the condition of no-load rotation or standby of the elevator traction machine, the radiation testing result obtained in the mode has the advantages that the radiation testing efficiency is improved, and the testing efficiency is improved. The reliability of the radiation test result of the elevator traction machine can be effectively improved.