14 results about "Threshold test" patented technology

The invention discloses a method for testing the service life of a high-repetition-frequency multi-pulse optical thin film, and the method comprises the steps: determining the range of the total irradiation pulse number of a damage threshold test through finding out the inflection point pulse number of which the damage threshold of a thin film element tends to be stable under high repetition frequency, and providing a basis for the acceleration of service life prediction; in the irradiation pulse number range, the relation between the damage threshold stable value and the repetition frequency is fitted, a thin film life prediction mechanism under the high repetition frequency is established, and the energy density allowed by stable operation of the element under other repetition frequencies can be obtained through calculation. The method is of great significance in improving the service life testing efficiency and accuracy of the optical element.

In some implementations, a test device may initiate a set of measurements by a set of sensors of the test device and of a device under test (DUT), wherein the DUT is a memory device. The test device may obtain the set of measurements of the DUT from the set of sensors based on initiating the set of measurements. The test device may analyze the set of measurements of the DUT, using a first model, to identify one or more defects present with the DUT. The test device may determine, using a second model, that the one or more defects present with the DUT satisfy a failure threshold. The test device may provide, based on the failure threshold being satisfied for the DUT, an output indicating that the failure threshold is satisfied for the DUT.

The invention discloses an intelligent self-service pure tone threshold test method and device and a medium, and relates to the technical field of threshold test, and the method comprises the steps: executing a pure tone threshold test process based on an information gain selection mechanism according to the recognition difficulty level in noise, the matching degree score and a pure tone threshold test starting strategy, the key pressing behavior of the testee is judged in real time in combination with the personal operation rhythm template, the hearing threshold estimation result of each frequency band and the corresponding uncertainty index and behavior event mark are output, and fixed-point deviation correction complementary measurement and weight correction are carried out based on the hearing threshold estimation result of each frequency band, the uncertainty index and the behavior event mark; obtaining a final hearing threshold result and an overall credibility grade; by establishing the candidate test set and introducing the pure tone threshold measurement process based on the information gain selection mechanism, the dynamic adjustment of the test path according to the hearing threshold estimation result and the uncertainty index of each frequency band is realized, and the test efficiency and the result stability are improved.

The invention relates to a sensory and quantitative synergetic olfactory threshold testing device and method, and the device comprises a container isolated from the outside; the odor dissipation pipe is connected into the container and provided with odor dissipation holes, and the numerical value of the distance between each odor dissipation hole and the container is marked at the position of each odor dissipation hole; during testing, water body classification is preliminarily judged through sense organs and is a first numerical value; according to the first numerical value, the required length of the odor dissipation pipe 3 is determined; recording the value identification of the smell dissipation hole where the slight smell is located as a second value; and integrating the first numerical value and the second numerical value into a final sniffing value. The method provided by the invention is applied to a scheme of sensory and quantitative cooperative olfactory threshold testing, judgment improvement and quantitative evaluation in quantitative analysis of olfactory smell (olfactory threshold method), and is beneficial to execution of a sensory judgment method required in national standards. The subjectivity of testers is reduced, and a test standard is established, so that the test is more objective and accurate.

The invention relates to the technical field of equipment inspection, and discloses an in-ear hearing protector suitability inspection method and system, and the method comprises the steps: debugging suitability inspection equipment, and setting various parameters required for testing; after the testee wears the test earmuffs, the sound calibrator is used for carrying out sound calibration on the left microphone and the right microphone; under the state that the hearing protector is not worn, sequentially outputting test signals based on a preset mode and a preset frequency, dynamically adjusting the signal intensity according to the subjective response of a tester, recording each sound pressure level, and calculating a naked ear hearing threshold; the testee correctly wears the to-be-tested hearing protector, the hearing threshold testing process is repeated, the sound pressure level is recorded, and the ear blockage hearing threshold is calculated; comparing the naked ear hearing threshold with the blocked ear hearing threshold, judging whether protection is qualified or not according to a preset standard, automatically generating an evaluation report containing all test data and conclusions, and realizing on-site rapid and accurate evaluation of the personal sound attenuation value of the hearing protector through non-intrusive subjective hearing threshold comparison.

The application provides a systematic method for improving traffic flow data quality, belongs to the technical field of traffic flow data processing, and is used for solving the technical problem of low traffic flow data repairing precision of the prior art. The method is a set of methods for improving data quality designed for different application conditions of traffic flow data, including identification of abnormal data and selection of repairing methods; abnormal data is screened out through data integrity test, variance test, combination test, threshold test and zero value test by combining online and offline traffic data, and then the data is repaired through the time and space correlation of the data; the application screens abnormal data through multiple methods, overcomes the problem of incomplete data screening in single threshold test, simultaneously uses combination test, considers the relationship between traffic flow parameters, selects appropriate data repairing methods according to the characteristics of abnormal data, improves the precision of data repairing, and thus improves the overall quality of traffic flow data.

The application belongs to the technical field of switching power supply, and provides a current threshold test circuit and method of power switch, the test circuit comprising a driving circuit, a comparator, a reverse driver, a first power switch and a second power switch connected with the driving circuit respectively; the output ends of the first power switch and the second power switch are connected to form a switching node, the switching node is connected with the negative input end of the comparator, the positive input end of the comparator is connected with a reference voltage, the output end is connected with the input end of the reverse driver, and the output end of the reverse driver is connected with the gate of the second power switch to form a closed loop. The comparator and the reverse driver are configured as an operational amplifier, the current limit threshold test is changed from dynamic test to static test, the threshold measurement accuracy and the measurement speed are greatly improved, the test efficiency is improved, sudden shutdown of the power tube under large current condition is avoided, and damage to the device and the automatic test machine is reduced.

The application discloses a kind of optical element laser damage growth threshold testing device and method, the application is based on the modulation of incident spot after damage and transmittance, the light field modulation and energy loss effect neglected in traditional test method due to damage are analyzed, the functional damage growth threshold in the damage growth process of optical element is obtained, so as to avoid the evaluation of traditional test method, only considering damage area growth, and ignoring the influence of damage on element device and the functional influence of element itself, the testing device and test method of the application not only improve test precision, but also provide a new evaluation system for optical element damage threshold test in high-power laser device, and provide more corresponding damage information.

The invention relates to a test system, a temperature control method thereof and a control device. The temperature control method comprises the steps of obtaining a test set temperature and a preset temperature threshold value of a test station, and determining whether a control valve is in an open state or a cut-off state based on the test set temperature and the preset temperature threshold value of the test station; when the control valve is in the open state, the actual test temperature of the test station and the first set temperature and the first actual temperature of the first station are obtained; if the actual test temperature reaches the set test temperature and the first actual temperature reaches the first set temperature, acquiring a test heating duty ratio and a test duty ratio threshold value of the test heating module; if the test heating duty ratio is smaller than the test duty ratio threshold value, the control valve is adjusted to enable the test heating duty ratio to be larger than or equal to the test duty ratio threshold value; and if the test heating duty ratio is greater than or equal to the test duty ratio threshold value, the test station and the first station enter a working state.

The invention relates to a rock material mechanical property testing technology, in particular to a rock-like material uniaxial compression relaxation stress threshold value testing method and device, which adopts a multi-stage stress loading and single sample continuous testing mode, and adopts fixed short-time observation in combination with an objectively determined stress relaxation rate threshold value criterion to test the rock-like material uniaxial compression relaxation stress threshold value. The rock-like material uniaxial compression relaxation stress threshold value is rapidly and accurately measured, the test period of a traditional complete relaxation curve measuring method is remarkably shortened, and meanwhile the reliability and repeatability of a test result are kept.

Methods, systems, and techniques for right-sizing resource requests for applications in a dynamically scalable computing environment. In one aspect, a method comprises monitoring resource usage of at least one computer resource by an application executing on a computer system, and monitoring resource requests for the computer resource(s) associated with the application. The method further comprises determining, for the computer resource(s), a resource usage upper bound associated with the application, testing the resource usage upper bound against at least one threshold, determining, from the testing, a resource request adjustment, and dynamically applying the resource request adjustment to the resource requests for the computer resource(s) associated with the application.

The invention discloses a micro-deformation adjusting and controlling method for nitrocarburizing treatment of an insert needle cylinder. The micro-deformation adjusting and controlling method comprises the steps of system construction, wide threshold value testing, narrow threshold value testing, autonomous learning and production verification. According to the method, a mode of combining a production system and an auxiliary calculation system is adopted, the concentration of H2 is controlled by adopting ammonium carbamate pre-decomposition, and a hard constraint is set to be embedded into an optimization algorithm, so that quality control is changed into beforehand prevention; the method integrates an autonomous learning model, accumulates data through a wide / narrow threshold test, establishes an accurate mapping relation between process input parameters and process output parameters, and realizes precise control of heat treatment micro-deformation through an optimization algorithm; according to the method, traditional experience trial and error are changed into data-driven optimization, so that the test times are remarkably reduced; according to the method, an adjustable weight coefficient is introduced into a loss function, so that the method has customized production capacity; the method continuously improves the production precision and the application range through the model feedback iteration data.

The application discloses a false negative reaction determination method in automatic pure tone hearing threshold test, and the method comprises the following steps: obtaining initial hearing threshold test values of a target tester at multiple frequencies in a normal test process, wherein the initial hearing threshold test values comprise frequencies and sound intensities; selecting a set frequency and adjusting the sound intensity based on the initial hearing threshold test value at the set frequency; performing secondary test on the target tester according to the adjusted sound intensity to obtain second hearing threshold test values; comparing the initial hearing threshold test values with the second hearing threshold test values to obtain test difference values of the sound intensities between the initial hearing threshold test values and the second hearing threshold test values; and adjusting the test process according to the test difference values until the test result of the target tester is determined as a false negative reaction or the test is ended. The application can identify whether the target tester has a false negative reaction through the automatic test process, and the test process is adjusted according to the reaction of the target tester, so that the accuracy and reliability of the test are improved.

The application provides a data processing method for corrosion fatigue test, a storage medium and an electronic device, and the data processing method comprises the following steps: S1: acquiring crack tip opening displacement variation-crack length data groups of a first stage and a second stage and a third stage in a corrosion fatigue crack propagation test, respectively; S2: inverting the first stage data; S3: performing data translation correction; S4: fusing and fitting all-stage data; the corrected first stage data group (Delta delta, a1'') and the second stage and third stage data group (Delta delta, a2) are combined to obtain a (Delta delta, a) data group of the corrosion fatigue crack propagation of all stages, and a Delta delta-a relationship model is fitted. The application is aimed at the problem that the Delta delta-a decrease in the K reduction method threshold test is inconsistent with the actual crack propagation increase law of marine engineering, the first stage data is inverted symmetrically and translationally corrected, the all-stage Delta delta-a data is monotonously increased and connected, and the application can be used for the corrosion fatigue full life evaluation of marine engineering structures.