18 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 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.

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 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 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.

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.

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 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.

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 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.

The utility model discloses radiation testing equipment, which belongs to the technical field of communication equipment testing and comprises a base, a bearing plate, a first mounting plate and a plurality of coupling plates, the first mounting plate and the bearing plate are arranged on the base, equipment to be tested can be mounted in a connecting hole in the bearing plate, the coupling plates are arranged on the first mounting plate positioned on one side of the bearing plate, and the coupling plates are arranged on the second mounting plate. The first mounting plate is perpendicular to the bearing plate, so that the coupling plates can test electromagnetic radiation of the side edge of the to-be-tested equipment, the coupling plates arranged towards the bearing plate are arranged above and / or below the bearing plate, and the coupling plates can test electromagnetic radiation above and / or below the to-be-tested equipment. Through connection and installation with different connection holes, the relative position between the to-be-tested device and the coupling plate can be adjusted, the test conditions can be flexibly adjusted, and the product test requirements are met.

The invention relates to the technical field of radiation measurement through ionization chambers, in particular to a radiation test method and system for a medical cyclotron. The method comprises the following steps: firstly, analyzing change characteristics of an output current curve under the condition of polarization voltage change, evaluating a saturation voltage probability coefficient of an output current curve segment corresponding to ideal polarization voltage, and then combining ionization interference factors such as an ionization chamber environment and beam intensity change of a particle beam; the radiation confidence coefficient of each output current accurately reflecting the radiation intensity is evaluated, then the current to be corrected is screened and corrected, an ideal output current correction curve is obtained, and then the radiation test accuracy of the medical cyclotron is improved.

The application discloses a radiation detection device and a detection method thereof, and belongs to the field of radiation testing. The device comprises a detection main body, one side of which is provided with a probe for detecting radiation; a protection tube; a gas pump structure, which is provided with an air outlet connected with the protection tube and an air inlet connected with the external environment; a filter structure, which is arranged on the air inlet to make the air entering the protection tube be low-radiation or non-radiation clean air; a pressure relief structure, which is arranged on the side of the protection tube away from the detection main body; and a sealing structure, which is arranged on the end of the protection tube away from the detection main body and forms a flexible or elastic sealing part. The application has the beneficial effect that the low-radiation or non-radiation clean air filtered by the gas pump structure is filled into the protection tube, and the protection tube is in abutment with an object to be detected to form a closed or semi-closed space during detection, so that the dust and impurities in the protection tube are significantly reduced, and the detection result is prevented from being interfered by the radiation dust.