A detector material performance analysis method, system, device and storage medium

Abstract

The application discloses a detector material performance analysis method, system, device and storage medium, and belongs to the technical field of detector material performance testing. The method obtains initial response, action response and recovery response under unified standard detection conditions; accumulates standard detection load of an action stage and a recovery stage respectively, and retains a termination detection load from the stage-allowed accumulated standard detection load; determines a response change interval according to a response change rate, determines a load constraint interval according to a residual allowed intermediate detection load and a residual effective stage time length, and determines a next detection interval according to a larger value of the two; makes the sample to be detected maintain a current stage condition after stopping intermediate standard detection, and obtains a stage termination response characteristic value when the effective stage time length expires; and determines performance decay parameters, recovery performance parameters and residual decay parameters according to responses of stages. The application can obtain comparable stage response data while limiting the influence of standard detection accumulation.

Description

Technical Field

[0001] This invention relates to the field of detector material performance testing technology, and in particular to a method, system, device and storage medium for analyzing detector material performance. Background Technology

[0002] Detector materials are functional materials used in radiation detectors, photodetectors, and imaging detectors. Their performance stability affects the amplitude, signal-to-noise ratio, and long-term operational reliability of the detector's output signal. When detector materials operate continuously under conditions such as bias voltage and irradiation, their output response may change over time. After irradiation is stopped, the bias voltage is removed, or the corresponding parameters are reduced, some of the response may gradually recover. Therefore, it is necessary to obtain the response changes of the material during the irradiation phase and after the irradiation is removed in order to analyze the performance degradation and recovery of the material.

[0003] Existing testing methods typically acquire the initial response before the application of the treatment, and then acquire the response again after the material has undergone a preset period of bias or irradiation. The difference in response before and after the treatment is used to determine the changes in material properties. Recovery performance testing also acquires the recovery response after irradiation is stopped, the bias is removed, or the treatment parameters are reduced. To obtain the process of material response changing over time, multiple detection points can be set during the treatment and recovery phases.

[0004] However, the initial response, action response, and recovery response may be obtained under different bias voltage, irradiation, or acquisition conditions. Differences in detection conditions can cause signal changes and material property changes caused by condition variations to become intertwined. After the sample is switched from action or recovery conditions to standard detection conditions, transient responses may occur due to bias voltage switching, carrier redistribution, and baseline changes in the acquisition circuit. Repeated standard detections at short fixed intervals increase the cumulative impact of standard detections on the sample state. If the last response obtained before stopping intermediate detections is used as the stage termination response after limiting the number of intermediate detections, this response may not match the material state at the end of the stage. Furthermore, if the time occupied by standard detections includes the action or recovery time, different detection counts will result in different actual stage conditions experienced by the sample. Therefore, how to determine the detection interval based on the actual time the sample is under stage conditions while maintaining unified detection conditions and eliminating the transient effects of switching, and how to obtain the stage termination response while limiting the cumulative standard detection load, are problems that need to be solved in the material performance analysis of existing detectors. Summary of the Invention

[0005] To address the issues of lacking unified detection conditions for response data at different stages, the impact of transient responses caused by condition switching on formal data acquisition, and the difficulty of balancing the acquisition of material response processes with the cumulative impact limitations of standard detection at fixed detection intervals, this invention provides a method, system, device, and storage medium for analyzing detector material performance.

[0006] In a first aspect, the present invention provides a method for analyzing the performance of detector materials, comprising:

[0007] Under standard detection conditions, the initial response characteristic values ​​of the sample to be tested are obtained, and the sample to be tested is sequentially subjected to preset action conditions and recovery conditions;

[0008] During the detection phases of the action and recovery phases, the sample to be tested is switched from the current phase conditions to the same standard detection conditions. After the response stabilizes, the phase response characteristic values ​​are obtained, and action response sequences and recovery response sequences are formed according to the corresponding effective phase durations.

[0009] The standard detection loads for the action phase and the recovery phase are accumulated separately. The stage-accumulated standard detection load and the retained termination detection load are deducted from the corresponding stage-allowed accumulated standard detection load to obtain the remaining allowable intermediate detection load.

[0010] The response change rate is determined based on the response characteristic values ​​of adjacent stages and their corresponding effective stage durations, and the response change interval is determined based on the response change rate. The load constraint interval is determined based on the remaining allowable intermediate detection load, the expected single standard detection load, and the remaining effective stage duration, and the larger value between the response change interval and the load constraint interval is determined as the next detection interval.

[0011] If the remaining allowable intermediate detection load is sufficient to execute the next standard detection, and the next detection time is earlier than the expiration of the effective phase duration, the sample to be tested returns to the current phase conditions and is detected again at the next detection time; if the remaining allowable intermediate detection load is insufficient, or the next detection time is not earlier than the expiration of the effective phase duration, the intermediate standard detection is stopped, the sample to be tested is kept under the current phase conditions, and the phase termination response characteristic value is obtained using the reserved termination detection load when the effective phase duration expires.

[0012] The performance degradation parameter, recovery performance parameter, and residual degradation parameter are determined based on the initial response characteristic value, action response sequence, action termination response characteristic value, recovery response sequence, and recovery termination response characteristic value.

[0013] Furthermore, the standard detection conditions include standard detection excitation parameters and standard acquisition parameters, and the response characteristic values ​​at each stage are obtained under the same standard detection conditions.

[0014] Furthermore, after the sample to be tested is switched to the standard detection conditions, the pre-acquisition response is continuously acquired. When the absolute value of the difference between adjacent pre-acquisition responses for a preset number of consecutive times is lower than the preset stability threshold, the stage response characteristic value is acquired. When the maximum standard detection duration is reached but the stability condition is not reached, the standard detection is terminated and the actual standard detection load is included in the corresponding stage cumulative standard detection load.

[0015] Furthermore, the effective phase duration is the cumulative time during which the sample under test is actually under preset action conditions or recovery conditions, and the time occupied by condition switching, pre-collection, and formal response collection is not included in the corresponding effective phase duration.

[0016] Furthermore, the stage allows the cumulative standard detection load to be determined based on the stage termination response deviation generated by the same batch of test samples under different cumulative standard detection loads; the termination detection load is determined based on the expected standard detection load required to complete the response stability judgment and stage termination response acquisition.

[0017] Furthermore, the standard detection load is determined based on the detection excitation intensity and actual duration of a single standard detection; when the standard detection includes multiple detection excitations with different load dimensions, the standard detection load of each type of detection excitation is accumulated separately.

[0018] Furthermore, the action phase ends when the effective duration of the action reaches the preset effective duration of the action, or when the relative decay of the current action response characteristic value relative to the initial response characteristic value reaches the preset decay threshold; the recovery phase ends when the effective recovery duration reaches the preset upper limit of the effective recovery duration, or when the recovery process reaches the preset stability condition.

[0019] Secondly, the present invention provides a detector material performance analysis system, including a condition control module, a response acquisition module, a detector load calculation module, a detection interval determination module, a stage control module, and a parameter calculation module.

[0020] The condition control module controls the switching of the sample under test between standard detection conditions, preset action conditions, and recovery conditions, and accumulates the corresponding effective stage duration; the response acquisition module acquires response characteristic values ​​and determines the response change rate; the detection load calculation module determines the cumulative standard detection load and the remaining allowable intermediate detection load for each stage; the detection interval determination module determines the response change interval and load constraint interval, and outputs the next detection time or a stop intermediate standard detection command; the stage control module controls stage transitions, termination of standard detection, and detection end; and the parameter calculation module determines the performance decay parameter, recovery performance parameter, and residual decay parameter.

[0021] Thirdly, the present invention provides an electronic device, including a processor, a memory, and a communication interface for communicating with a detector material testing device, wherein the memory stores a computer program, and the computer program, when executed by the processor, implements the above-mentioned detector material performance analysis method.

[0022] Fourthly, the present invention provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the above-described detector material performance analysis method.

[0023] The present invention has the following beneficial effects:

[0024] First, the initial response, action response, and recovery response are all acquired under the same standard detection conditions, and formal acquisition is performed when the response of the sample under test reaches a stable condition after switching to the standard detection conditions. This can reduce the impact of differences in detection conditions and transients in condition switching on the stage response data and improve the comparability of response data at different stages.

[0025] Second, the cumulative standard detection loads for the action phase and the recovery phase are respectively targeted, and the termination detection load is retained from the phase-allowed cumulative standard detection loads. This ensures that even after intermediate standard detections are restricted, the phase termination response characteristic value can still be obtained when the effective phase duration expires, thus avoiding the replacement of the phase termination state with the response obtained before the intermediate standard detections are stopped.

[0026] Third, the response change interval is determined based on the material response change rate, the load constraint interval is determined based on the remaining allowable intermediate detection load and the remaining effective stage duration, and the next detection interval is determined by the larger of the two values. This allows us to obtain the material response change process during the action and recovery stages while limiting the cumulative influence of standard detection.

[0027] Fourth, the effective phase duration only accumulates the time when the sample to be tested is actually under the preset action conditions or recovery conditions. The time occupied by condition switching, pre-collection and formal response collection is not included in the corresponding effective phase duration, which can reduce the difference in actual action time or actual recovery time caused by different detection times and response stabilization waiting time. Attached Figure Description

[0028] Figure 1 This is a flowchart illustrating the overall process of the detector material performance analysis method of the present invention.

[0029] Figure 2 This is a timing diagram illustrating the switching of conditions between the action phase and the recovery phase, the accumulation of the effective phase duration, and the detection of the termination criteria in this invention.

[0030] Figure 3This is a flowchart illustrating how the present invention determines the next detection time based on the response change interval, the remaining allowable intermediate detection load, and the remaining effective stage duration.

[0031] Figure 4 This is a block diagram showing the connection structure between the detector material performance analysis system and the detector material testing device of the present invention. Detailed Implementation

[0032] The technical solution of the present invention will be described below with reference to the accompanying drawings and embodiments. The following embodiments are used to illustrate the present invention and are not intended to limit the scope of protection of the present invention.

[0033] The detector material referred to in this invention is a functional material capable of generating a collectable electrical or optical response under detection excitation. The sample to be tested can be a thin film, crystal, or test piece formed from the detector material, or it can be a test device including the detector material, electrodes, substrate, or packaging structure.

[0034] The detector material testing device is used to apply standard detection conditions, preset action conditions, and recovery conditions to the sample under test, and to collect the response data of the sample under test. The testing device includes a condition application unit, a sample carrying unit, a response acquisition unit, and a control interface unit; the condition application unit uses a bias source, an irradiation source, or a light source according to the detection principle of the sample under test.

[0035] Standard detection conditions refer to the uniform detection conditions used to obtain the initial response characteristic values, action response characteristic values, and recovery response characteristic values, including standard detection excitation parameters and standard acquisition parameters. For the same sample under test and the same performance analysis process, the response characteristic values ​​at each stage are obtained under the same standard detection conditions.

[0036] The preset operating conditions include at least one of bias voltage and irradiation. The recovery conditions are formed by stopping at least one of the actual operating conditions, or by reducing the actual bias voltage or irradiation parameters.

[0037] The intermediate standard detection referred to in this invention refers to the standard detection performed to obtain the material response change process when the action phase or recovery phase has not yet reached the phase termination condition.

[0038] The term "termination standard probe" as used in this invention refers to the standard probe performed to obtain the phase termination response characteristic value when the action phase or recovery phase ends due to the expiration of the effective phase duration.

[0039] The effective phase duration referred to in this invention is the cumulative time during which the sample under test is actually under preset action conditions or recovery conditions. Condition switching time, pre-acquisition time, and formal response acquisition time are not included in the corresponding effective phase duration.

[0040] The action response sequence includes action response characteristic values ​​arranged according to the effective duration of the action; the recovery response sequence includes recovery response characteristic values ​​arranged according to the effective duration of the recovery.

[0041] Example 1

[0042] This embodiment provides a method for analyzing the properties of detector materials. (Refer to...) Figure 1 The method includes steps S101 to S108.

[0043] S101: Obtain initial response and enter action phase

[0044] Step S101: Under standard detection conditions, the initial response characteristic value of the sample to be tested is obtained, and the sample to be tested is brought into the action phase.

[0045] The detector material testing device applies a standard detection excitation to the sample under test and acquires the response signal generated by the sample according to standard acquisition parameters. Feature extraction is performed on the response signal to obtain initial response feature values. .

[0046] Response characteristic values ​​can be output current, output voltage, response amplitude, responsivity, sensitivity, signal-to-noise ratio, dark current, light output, pulse amplitude, collected charge, or energy resolution. The actual response characteristic values ​​used are determined based on the working principle of the detector material and the performance to be analyzed.

[0047] When the performance change directions corresponding to different response indicators are inconsistent, the original response indicators are processed to ensure consistent performance direction. This means that an increase in the processed response characteristic value indicates performance improvement, while a decrease indicates performance degradation. The initial response characteristic value, the applied response characteristic value, and the recovery response characteristic value are processed in the same way.

[0048] After obtaining the initial response characteristic values, preset action conditions are applied to the sample to be tested, and the effective action duration is accumulated. The timing of the first action detection is determined according to the test specifications or pre-experiment.

[0049] S102: Obtain stage response feature values

[0050] Step S102: Obtain the phase response feature value at the detection time of the action phase and the recovery phase.

[0051] Once the detection time for the current stage is reached, the accumulation of the corresponding effective stage duration is paused, the sample to be tested is switched from the current stage conditions to the standard detection conditions, and the pre-collection response is continuously acquired according to the preset sampling cycle.

[0052] No. In the sub-standard detection, the absolute value of the difference between adjacent pre-acquisition responses is:

[0053]

[0054] in, Indicates the action phase or recovery phase. Indicates the standard detection order. This indicates the pre-collection order within the same standard detection. Representation phase The The first standard detection obtained One pre-collected response.

[0055] The following formula is used as the stability criterion for adjacent pre-acquisition responses:

[0056]

[0057] If continuous If all adjacent pre-collected responses meet the above stability criteria, the response is considered stable. To ensure a stable number of judgments, The stable threshold.

[0058] After the response stabilizes, formal response data is acquired, and stage response feature values ​​are extracted from the formal response data. Each action response feature value is used to form an action response sequence according to its corresponding effective duration, and each recovery response feature value is used to form a recovery response sequence according to its corresponding effective recovery duration.

[0059] The pre-collection time and the formal response collection time are both included in the standard detection duration, but are not included in the effective phase duration of the current phase.

[0060] If the stability condition is not met even after the maximum standard detection duration is reached, the current standard detection is terminated, and the pre-acquisition response is not added to the corresponding response sequence. The actual standard detection load is determined based on the actual excitation intensity and actual duration of the current standard detection and is included in the current stage's cumulative standard detection load.

[0061] If the intermediate standard detection is completed but the current stage has not yet ended, the sample to be tested is returned to the current stage conditions, and the corresponding effective stage duration is continued to accumulate.

[0062] S103: Determine the permissible cumulative standard detection load

[0063] Step S103: Determine the allowable cumulative standard detection load and the termination detection load for the action phase and the recovery phase, respectively.

[0064] The same batch of reference samples and multiple groups of perturbation test samples were set up. The reference samples underwent standard probing only before the start and end of the phase, while each group of perturbation test samples underwent standard probing for different numbers or durations under the same phase conditions.

[0065] By comparing the stage termination response characteristic values ​​of the reference sample and each group of disturbance test samples, the maximum cumulative standard detection load corresponding to the response deviation not exceeding the allowable disturbance deviation is determined as the allowable cumulative standard detection load for that stage. The allowable cumulative standard detection load for the action stage and the allowable cumulative standard detection load for the recovery stage are determined separately.

[0066] The termination detection load is determined based on the expected standard detection load required to complete response stability assessment and phase termination response acquisition under standard detection conditions. The termination detection load can be determined according to the standard detection load corresponding to the maximum standard detection duration.

[0067] The termination probe load is included in the phase-allowed cumulative standard probe load and is used to obtain the phase termination response characteristic value, but not for intermediate standard probes.

[0068] S104: Determine the remaining permissible intermediate probe load

[0069] Step S104: Calculate the single standard detection load, the stage cumulative standard detection load, and the remaining allowable intermediate detection load.

[0070] No. The single standard detection load for a sub-standard detection is:

[0071]

[0072] in, For the time variable in the standard detection process, Indicates the first The time-varying detection excitation intensity during the sub-standard detection process. This indicates the actual duration of this standard probe.

[0073] When the standard detection excitation intensity remains constant, the standard detection load for a single test is:

[0074]

[0075] The current cumulative standard detection load is:

[0076]

[0077] in, The summation order is for standard detection.

[0078] The remaining allowable intermediate detection load is:

[0079]

[0080] in, This indicates that the current stage allows for the accumulation of standard detection load. This indicates the terminated probe load that is retained in the current phase.

[0081] The expected standard detection load for the next time is denoted as The remaining allowable intermediate detection load is determined based on the current standard detection excitation intensity and the maximum standard detection duration. The following formula is used to determine whether the remaining allowable intermediate detection load is sufficient to execute the next intermediate standard detection:

[0082]

[0083] If the above formula holds true, then the remaining allowable intermediate probe load is sufficient to perform the next intermediate standard probe.

[0084] For optical excitation, the excitation intensity can be measured using optical power density or photon flux; for X-ray or gamma-ray excitation, dose rate, energy flux rate, or photon flux can be used. The same load metering method is used for the same type of excitation in the same performance analysis.

[0085] When standard detection includes multiple detection stimuli with different load dimensions, the single standard detection load, cumulative standard detection load, termination detection load, and remaining allowable intermediate detection load are determined separately for each type of detection stimuli. Detection loads that cannot be directly converted are not summed. The remaining allowable intermediate detection count is determined based on the remaining allowable intermediate detection load for each type and the corresponding expected single standard detection load, and the minimum of these values ​​is taken as the remaining allowable intermediate detection count for the current stage. Intermediate standard detection is stopped if any type of remaining allowable intermediate detection load is insufficient.

[0086] S105: Determine the next detection time

[0087] Step S105: Determine the next detection time based on the response change and the remaining allowable intermediate detection load.

[0088] The first action detection time and the first recovery detection time are preset detection times. After obtaining the first action response characteristic value during the action phase, the initial response characteristic value is used as the reference response when the effective duration of the action is zero. After obtaining the first recovery response characteristic value during the recovery phase, the action termination response characteristic value is used as the reference response when the effective duration of the recovery is zero. If the action termination response characteristic value is not effectively obtained, the response change rate is determined after obtaining two effective recovery response characteristic values, and a preset detection interval is used before that.

[0089] After obtaining at least two valid response characteristic values, the rate of response change is determined based on two adjacent valid response characteristic values ​​and their corresponding valid phase durations:

[0090]

[0091] in, Indicates the current stage. This indicates the order of valid responses in the response sequence at the current stage. This indicates the first response in the current stage sequence. One effective response feature value, This indicates the cumulative effective stage duration when the response characteristic value is obtained.

[0092] Determine the response change interval based on the target response change amount and the response change rate:

[0093]

[0094] in, Indicates the change in the target response. and These represent the minimum and maximum detection intervals allowed in the current stage, respectively. A positive correction with the same dimensions as the rate of change of response is determined based on the smallest rate of change of response that the testing device can resolve, in order to avoid a denominator of zero.

[0095] The target response change is determined based on the response resolution of the testing device, the response fluctuation range of the sample under steady-state conditions, and the minimum response change that needs to be identified. The minimum detection interval is not less than the shortest time required to complete condition switching, response stability judgment, and formal response acquisition.

[0096] When multiple response characteristic values ​​are used in the same performance analysis, the response change interval corresponding to each response characteristic value is determined, and the minimum value among them is taken as the response change interval of the current stage.

[0097] The remaining allowed intermediate probe count is:

[0098]

[0099] in, This indicates rounding down to the nearest integer.

[0100] When determining the next detection interval, the currently accumulated effective phase duration is recorded as follows. The remaining effective phase duration for the current phase is:

[0101]

[0102] in, This indicates the maximum preset effective duration for the current stage. This indicates the current accumulated effective period duration when determining the next detection interval.

[0103] If there are remaining allowed intermediate probe counts If the value is greater than zero, the load constraint interval is determined according to the following formula:

[0104]

[0105] The next detection interval is:

[0106]

[0107] The effective duration of the next detection phase is:

[0108]

[0109] The remaining allowed intermediate probe count is greater than zero, and Less than When the time is reached, the sample to be tested is returned to the current stage conditions, and the cumulative effective stage duration reaches [a certain value]. Then switch back to standard detection conditions.

[0110] The remaining allowed intermediate probe count is zero, or Not less than When the intermediate standard detection is stopped, the sample to be tested is kept under the current stage conditions until the effective stage duration expires.

[0111] S106: Response to Termination After Action is Acquired

[0112] Step S106: Determine whether the action phase has ended and obtain the action termination response characteristic value.

[0113] After obtaining the current action response characteristic value, determine its relative decay amount relative to the initial response characteristic value.

[0114] When the current relative decay reaches the preset decay threshold, the current action response characteristic value that triggers the end of the action phase is determined as the action termination response characteristic value, the cumulative effective duration of the action is stopped, and the sample to be tested enters the recovery condition.

[0115] If the current relative attenuation has not reached the preset attenuation threshold, but the effective duration of action has reached the preset effective duration of action, the detection load is terminated using the retained action phase to execute the termination standard detection. The sample to be tested is switched from the preset action conditions to the standard detection conditions. After the response stabilizes, the action termination response characteristic value is obtained, and then the sample to be tested is put into the recovery conditions.

[0116] If intermediate standard detection is prematurely stopped due to insufficient remaining allowable intermediate detection load, the sample under test continues to be under the preset action conditions until the preset effective action duration is reached, at which point the termination standard detection is executed. The last action response characteristic value obtained before stopping the intermediate standard detection is not used as the action termination response characteristic value.

[0117] If the standard detection fails to reach a stable condition even after the maximum standard detection duration, the termination response is marked as not effectively obtained. The original response data and actual standard detection load are retained, and the sample to be tested is allowed to enter the recovery condition. The termination response characteristic value is not replaced by the previous response characteristic value.

[0118] S107: Obtained recovery termination response

[0119] Step S107: Obtain the recovery response characteristic value and the recovery termination response characteristic value during the recovery phase.

[0120] Once the sample to be tested enters the recovery condition, the effective recovery time begins to accumulate. After the recovery detection time is reached, the recovery response characteristic value is obtained according to step S102, and the remaining allowable intermediate detection load and the next recovery detection time are updated according to steps S104 and S105.

[0121] The first in the recovery response sequence The response characteristic value is denoted as The stability criterion for adjacent recovery response eigenvalues ​​is:

[0122]

[0123] If, after the effective recovery time reaches the preset minimum effective recovery time, continuous If all the above conditions are met in the subsequent recovery stability assessments, then the current recovery response characteristic value is determined as the recovery termination response characteristic value, and the detection ends. To restore a stable number of judgments, To restore the stable threshold.

[0124] If the recovery stability conditions are not met and the effective recovery duration reaches the preset upper limit of the effective recovery duration, the termination standard detection is performed using the reserved recovery phase termination detection load. After the response stabilizes, the recovery termination response characteristic value is obtained, and the detection ends.

[0125] If intermediate standard detection is prematurely stopped due to insufficient remaining allowable intermediate detection load, the sample to be tested continues to be under recovery conditions until the effective recovery time reaches the preset upper limit of the effective recovery time, at which point the termination standard detection is executed. The last recovery response characteristic value obtained before stopping the intermediate standard detection is not used as the recovery termination response characteristic value.

[0126] If the standard detection fails to reach a stable condition even after the maximum standard detection duration, the recovery termination response will be marked as not effectively obtained. The original response data and actual standard detection load will be retained, and the recovery termination response characteristic value will not be replaced by the previous recovery response characteristic value.

[0127] S108: Determine material property parameters

[0128] Step S108: Determine the material performance parameters based on the initial response characteristic value, the action response sequence, the action termination response characteristic value, the recovery response sequence, and the recovery termination response characteristic value.

[0129] The first in the action response sequence The response characteristic value is denoted as Its relative decay amount with respect to the initial response eigenvalue is:

[0130]

[0131] in, A positive correction quantity with the same dimensions as the response characteristic value is determined based on the response resolution of the testing device to avoid a denominator of zero.

[0132] The performance degradation parameter can be determined based on the relative degradation in the action-response sequence and the characteristic value of the action termination response. When the relative degradation corresponding to the action termination response is used as the performance degradation parameter:

[0133]

[0134] in, This indicates the characteristic value of the response that terminates the action.

[0135] The first in the recovery response sequence The response characteristic value is denoted as Its relative recovery amount relative to the eigenvalue of the termination response is:

[0136]

[0137] When using the relative recovery amount corresponding to the recovery termination response as the recovery performance parameter:

[0138]

[0139] in, This indicates the characteristic value for restoring the terminated response.

[0140] The residual attenuation parameter is:

[0141]

[0142] When analyzing multiple response metrics, the corresponding performance degradation parameter, recovery performance parameter, and residual degradation parameter are determined for each response metric.

[0143] If the termination response characteristic value is not effectively obtained, the performance degradation parameter and recovery performance parameter with that characteristic value as input are not calculated; if the recovery termination response characteristic value is not effectively obtained, the recovery performance parameter and residual degradation parameter with that characteristic value as input are not calculated, and the corresponding termination response information is output.

[0144] In one specific application, the sample to be tested is a test device comprising a direct conversion radiation detection material and electrodes. The detector material testing apparatus includes a bias source, an X-ray source, a current acquisition device, and a control device. Standard detection conditions employ a fixed bias voltage, a fixed X-ray energy range, a fixed dose rate, and fixed acquisition parameters. The response characteristic value is expressed as either the response current or the sensitivity.

[0145] During the action phase, a preset bias voltage and irradiation conditions are continuously applied to the sample under test. After the action detection time is reached, the sample under test is switched to standard detection conditions. After the response stabilizes, the action response characteristic value is obtained, and then the sample is returned to the preset action conditions.

[0146] During the recovery phase, continuous irradiation is stopped and the bias voltage is removed or reduced. After the recovery detection time is reached, the sample to be tested is switched to the same standard detection conditions. After the response stabilizes, the recovery response characteristic value is obtained, and then the recovery conditions are returned.

[0147] For photoelectric detection materials, optical excitation with a fixed wavelength and intensity is used as the standard detection excitation, and photoelectric response characteristic values ​​are obtained under fixed bias voltage and acquisition parameters. Preset operating conditions are formed through continuous illumination or bias voltage application, and recovery conditions are formed by stopping the application or reducing the corresponding operating parameters. The standard detection load is determined based on the standard optical excitation intensity and its duration.

[0148] For scintillation detection materials, radiation with a fixed energy range and dose rate is used as the standard detection excitation, and scintillation response characteristic values ​​are obtained under the same optical signal collection conditions and acquisition parameters. Preset activation conditions are established through continuous irradiation, and recovery conditions are established by stopping irradiation or reducing irradiation parameters. The standard detection load is determined based on the radiation intensity and its duration.

[0149] Example 2

[0150] This embodiment provides a detector material performance analysis system. (Refer to...) Figure 4 The system includes a condition control module, a response acquisition module, a detection load calculation module, a detection interval determination module, a stage control module, and a parameter calculation module.

[0151] The condition control module is connected to the detector material testing device and is used to control the bias source, irradiation source, standard detection excitation device, and response acquisition device, enabling the sample under test to switch between standard detection conditions, preset action conditions, and recovery conditions. When the sample under test is under preset action conditions or recovery conditions, the condition control module accumulates the corresponding effective stage duration; after the sample under test switches to standard detection conditions, the accumulation of the corresponding effective stage duration is paused.

[0152] The response acquisition module is connected to the detector material testing device to receive pre-acquired and formal response data, perform response stability judgment and response feature extraction, and form the action response sequence and recovery response sequence. The response acquisition module also determines the response change rate based on the response characteristic values ​​of adjacent effective stages and the duration of their effective stages, and sends the response change rate to the detection interval determination module.

[0153] The detection load calculation module receives the standard detection excitation intensity and the actual duration, determines the standard detection load for a single detection, and updates the cumulative standard detection load for both the action phase and the recovery phase. The detection load calculation module subtracts the cumulative standard detection load and the termination detection load from the allowable cumulative standard detection load for the corresponding phase to obtain the remaining allowable intermediate detection load, and sends the remaining allowable intermediate detection load to the detection interval determination module.

[0154] The detection interval determination module determines the response change interval based on the response change rate, and determines the load constraint interval based on the remaining allowable intermediate detection load, the expected single standard detection load, and the remaining effective stage duration. The larger value between the response change interval and the load constraint interval is determined as the next detection interval.

[0155] If the effective duration of the next detection phase expires earlier than the effective duration of the current phase, and the remaining allowable intermediate detection load is sufficient to execute the next standard detection, the detection interval determination module sends the next detection time to the condition control module. If the remaining allowable intermediate detection load is insufficient, or the effective duration of the next detection phase does not expire earlier than the effective duration of the current phase, the detection interval determination module sends a stop intermediate standard detection command to the condition control module.

[0156] The phase control module receives the phase response characteristic value and the effective phase duration. When the relative attenuation of the current action response characteristic value relative to the initial response characteristic value reaches a preset attenuation threshold, the current action response characteristic value is determined as the action termination response characteristic value, and a control command to enter the recovery condition is sent to the condition control module; when the recovery phase reaches the recovery stability condition, the current recovery response characteristic value is determined as the recovery termination response characteristic value, and a termination detection command is sent to the condition control module.

[0157] When the effective duration of the action or the effective duration of the recovery reaches the corresponding upper limit but the response termination condition is not met, the stage control module sends a termination standard detection command to the condition control module. The condition control module uses the reserved termination detection load control test device to perform standard detection, and the response acquisition module obtains the action termination response characteristic value or the recovery termination response characteristic value.

[0158] The parameter calculation module receives the initial response characteristic value, the action response sequence, the action termination response characteristic value, the recovery response sequence, and the recovery termination response characteristic value, and determines the performance degradation parameter, the recovery performance parameter, and the residual degradation parameter.

[0159] Example 3

[0160] This embodiment provides an electronic device, including a processor, a memory, and a communication interface for communicating with a detector material testing device, wherein the memory stores a computer program.

[0161] When the processor executes the computer program, it controls the detector material testing device through the communication interface, causing the sample to switch between standard detection conditions, preset action conditions, and recovery conditions, and receives the pre-acquisition response and formal response data collected by the detector material testing device.

[0162] The processor performs response stability judgment and response feature extraction on the received response data to form an action response sequence and a recovery response sequence; it determines the single standard detection load based on the standard detection excitation intensity and the actual duration, and updates the cumulative standard detection load and the remaining allowable intermediate detection load during the update phase; it determines the next detection time or stops intermediate standard detection based on the response change rate, the remaining allowable intermediate detection load, and the remaining effective phase duration; when the effective phase duration expires, it controls the test device to perform termination standard detection, and determines the material performance parameters based on the obtained action termination response feature values ​​and recovery termination response feature values.

[0163] The memory may include random access memory and non-volatile memory. The processor may be a central processing unit, a microprocessor, a digital signal processor, or other processing unit capable of executing the computer program.

[0164] This embodiment also provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, it causes the processor to control the detector material testing device and process the response data it collects, thereby implementing the detector material performance analysis method described in Embodiment 1.

[0165] The computer-readable storage medium may be a read-only memory, a random access memory, a solid-state memory, a magnetic storage medium, an optical storage medium, or other non-transitory storage medium capable of storing computer programs.

[0166] In this embodiment, the number of stability judgments, stability threshold, maximum standard detection duration, allowable disturbance deviation, maximum detection interval, attenuation threshold, number of stability recovery judgments, and stability recovery threshold are determined based on the response resolution of the detector material testing device, the stability response fluctuation of samples in the same batch, the standard detection condition switching time, the cumulative detection amount that the sample under test can withstand, and the minimum material response change that needs to be identified.

[0167] When the detector material type, sample size, standard detection excitation, operating conditions, or test device changes, the corresponding preset stability threshold, allowable cumulative standard detection load, and detection interval parameters should be redefined.

[0168] The cumulative standard detection load, termination detection load, response change interval, and load constraint interval are all determined for the action phase and recovery phase respectively, and the parameters of the other phase are not directly used.

Claims

1. A method for analyzing the performance of detector materials, characterized in that, include: Under standard detection conditions, the initial response characteristic value is obtained, and the sample to be tested is subjected to preset action conditions and recovery conditions in sequence; During the detection of the action and recovery phases, the same standard detection conditions are switched. After the response stabilizes, the phase response characteristic values ​​are obtained, and a response sequence is formed according to the effective phase duration. The standard detection loads for the two stages are accumulated separately. The remaining allowable intermediate detection load is obtained by subtracting the stage-accumulated standard detection load and the reserved termination detection load from the stage-allowed accumulated standard detection load. The response change interval is determined based on the response characteristic values ​​of adjacent stages and the duration of the effective stage. The load constraint interval is determined based on the remaining allowable intermediate detection load, the expected single standard detection load, and the remaining duration of the effective stage. The larger of these is taken as the next detection interval. If the remaining allowable intermediate detection load is insufficient or the next detection time is not earlier than the expiration of the effective stage duration, intermediate standard detection is stopped, the current stage conditions are maintained until the expiration of the effective stage duration, and the stage termination response characteristic value is obtained by using the terminated detection load. Based on the initial response characteristic value, the action and recovery response sequence and its termination response characteristic value, the performance degradation parameter, recovery performance parameter and residual degradation parameter are determined.

2. The method for analyzing the properties of detector materials according to claim 1, characterized in that, The standard detection conditions include standard detection excitation parameters and standard acquisition parameters; after each switch from the current stage conditions to the standard detection conditions, pre-acquisition responses are continuously acquired, and when the absolute value of the difference between adjacent pre-acquisition responses for a preset number of consecutive times is lower than a preset stable threshold, the corresponding stage response feature value is acquired; If the stability condition is not met even after the maximum standard detection duration is reached, the current standard detection will be terminated, the current pre-collection response will not be added to the corresponding response sequence, and the current actual standard detection load will be included in the stage cumulative standard detection load.

3. The method for analyzing the properties of detector materials according to claim 1, characterized in that, The preset action conditions include at least one of bias action and irradiation action. The recovery condition is formed by stopping at least one action actually used or reducing the bias parameter or irradiation parameter actually used. The effective stage duration is the cumulative time when the sample under test is actually under the corresponding stage conditions. The condition switching time, pre-acquisition time and stage response acquisition time are not included in the effective stage duration.

4. The method for analyzing the properties of detector materials according to claim 1, characterized in that, Set up reference samples and disturbance test samples in the same batch, so that each disturbance test sample is subjected to different cumulative standard detection loads under the same stage conditions. Determine the allowable cumulative standard detection load for the corresponding stage based on the stage termination response deviation between each disturbance test sample and the reference sample. The termination detection load is determined based on the expected standard detection load required to complete the response stability judgment and phase termination response acquisition under standard detection conditions.

5. The method for analyzing the properties of detector materials according to claim 1, characterized in that, The single standard detection load is determined based on the detection excitation intensity and actual duration of a single standard detection. When a standard detection includes multiple detection excitations with different load dimensions, the single standard detection load, cumulative standard detection load, termination detection load, and remaining allowable intermediate detection load for each type of detection excitation are determined separately, and intermediate standard detection is stopped when any type of remaining allowable intermediate detection load is insufficient.

6. The method for analyzing the properties of detector materials according to claim 1, characterized in that, The response change rate is determined by the ratio of the absolute value of the difference between the characteristic values ​​of two adjacent stage responses to the difference in the duration of the corresponding effective stage. The response change interval is determined by the target response change amount and the response change rate. The remaining number of allowable intermediate detections is determined by the remaining allowable intermediate detection load and the expected single standard detection load. The load constraint interval is determined by the remaining effective stage duration and the remaining allowable intermediate detection number. The larger value between the response change interval and the load constraint interval is determined as the next detection interval.

7. The method for analyzing the properties of detector materials according to claim 1, characterized in that, When the characteristic value of a stage response reaches the corresponding response termination condition, the characteristic value of that stage response is determined as the stage termination response characteristic value. When the effective phase duration expires without meeting the response termination condition, the phase termination response characteristic value is obtained using the termination detection load. The performance degradation parameter is determined based on the initial response characteristic value and the action termination response characteristic value; the recovery performance parameter is determined based on the action termination response characteristic value and the recovery termination response characteristic value; and the residual degradation parameter is determined based on the initial response characteristic value and the recovery termination response characteristic value.

8. A detector material performance analysis system, characterized in that, include: The condition control module is used to switch the sample under test between standard detection conditions, preset action conditions and recovery conditions and accumulate the effective phase duration. The response acquisition module is used to acquire initial, phase, and phase termination response feature values ​​to form a response sequence. The detection load calculation module is used to accumulate the two-stage standard detection load. The remaining allowable intermediate detection load is obtained by subtracting the cumulative standard detection load and the termination detection load from the corresponding allowable cumulative standard detection load. The detection interval determination module is used to determine the response change interval based on the response characteristic values ​​of adjacent stages and the duration of the effective stage, and to determine the load constraint interval based on the remaining allowable intermediate detection load, the expected single standard detection load and the remaining duration of the effective stage, and to take the larger one as the next detection interval. The phase control module is used to perform intermediate standard detection at the next detection interval. When the remaining allowable intermediate detection load is insufficient or the next detection time is not earlier than the expiration of the effective phase duration, the intermediate standard detection is stopped, the phase conditions are maintained until the expiration, and the detection is terminated and the phase is switched or the detection ends. The parameter calculation module is used to determine the performance degradation parameter, recovery performance parameter, and residual degradation parameter based on the initial, stage, and termination response characteristic values.

9. An electronic device comprising a processor, a memory, and a communication interface for communicating with a detector material testing apparatus, wherein the memory stores a computer program, characterized in that, When the computer program is executed by the processor, the processor controls the detector material testing device through the communication interface and processes the response data collected by the detector material testing device to perform the detector material performance analysis method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, which, when executed by a processor, causes the processor to control the detector material testing device and process the response data collected by the detector material testing device to perform the detector material performance analysis method according to any one of claims 1 to 7.

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