A temperature and irradiation damage self-checking compensation photoelectric detection system and method suitable for perovskite

Abstract

This invention discloses a photoelectric detection system and method for self-compensation of temperature and radiation damage in perovskites, belonging to the field of photoelectric detection technology. The system includes a perovskite scintillator, a silicon photomultiplier tube, a signal conditioning circuit, a temperature detection circuit, an LED self-test circuit, a pole-zero cancellation and shaping circuit, and a programmable logic device with a built-in compensation control IP core. The corresponding method acquires the pulse waveform and calibrates the radiation compensation parameters through LED self-test before operation. During operation, it dynamically compensates the detection signal by combining real-time temperature data and pre-stored compensation coefficients. This invention solves the problems of poor temperature adaptability, lack of radiation damage compensation, and insufficient signal quality in existing perovskite detection systems, achieving coordinated adaptive compensation of temperature and radiation damage. This effectively improves the system's detection accuracy, environmental adaptability, and long-term stability, and can be widely applied to various radiation detection scenarios.

Description

Technical Field

[0001] This invention relates to the field of photoelectric detection technology, specifically to a photoelectric detection system and method for self-testing and compensating for temperature and irradiation damage in perovskites. Background Technology

[0002] In recent years, perovskite materials have gradually become one of the core candidate materials in the field of photoelectric detection due to their advantages such as high light yield, excellent time response characteristics, and low preparation cost, and have been widely used in scenarios such as X-ray detection and particle discrimination. However, existing perovskite-based photoelectric detection systems still face insurmountable technical bottlenecks in practical applications. The core problem lies in the lack of an integrated control and compensation scheme designed specifically for the characteristics of perovskite materials. Specifically, the light yield of perovskite scintillators is easily affected by fluctuations in ambient temperature. Temperature changes directly lead to deviations in the intensity and waveform of the light signal, but existing systems cannot guarantee the consistency of detection results under different temperature environments. At the same time, perovskite materials are prone to performance damage such as lattice defects and light yield attenuation under long-term irradiation, which can cause signal distortion and decreased sensitivity. In addition, the signal output after perovskite is coupled with photoelectric conversion devices has the characteristics of long tail and high noise interference. These problems are intertwined, resulting in the detection accuracy, environmental adaptability, and long-term stability of existing perovskite photoelectric detection systems failing to meet the needs of practical applications, greatly limiting the large-scale promotion and reliable application of perovskite materials in the field of photoelectric detection. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the present invention aims to provide a photoelectric detection system and method for self-compensation of temperature and irradiation damage in perovskites. This system solves the problems of poor temperature adaptability, lack of irradiation damage compensation, and insufficient signal quality in existing perovskite detection systems. It achieves coordinated adaptive compensation of temperature and irradiation damage, effectively improving the system's detection accuracy, environmental adaptability, and long-term stability. It can be widely applied to various radiation detection scenarios.

[0004] To achieve the above objectives, the embodiments of this invention provide the following technical solutions:

[0005] This application provides a photoelectric detection system for self-testing and compensating for temperature and radiation damage in perovskites, comprising: a perovskite scintillator; a silicon photomultiplier tube optically coupled to the perovskite scintillator for converting an optical signal into a current signal; a signal conditioning circuit connected to the silicon photomultiplier tube for amplifying and polarity-converting the current signal and outputting a voltage pulse signal; a temperature detection circuit for real-time monitoring of ambient temperature and outputting a temperature detection signal; an LED self-test circuit for emitting a self-test optical signal to the perovskite scintillator; and an LED self-test circuit connected to the signal conditioning circuit. The pole-zero cancellation and shaping circuit at the output terminal is used to eliminate tailing and filter noise in the voltage pulse signal. The programmable logic device is connected to the output terminals of the temperature detection circuit, the LED self-test circuit, the pole-zero cancellation and shaping circuit, and the signal conditioning circuit, respectively. The programmable logic device has a compensation control IP core, which is used to generate temperature compensation coefficient and irradiation compensation coefficient based on the temperature detection signal and the self-test pulse signal generated by the LED self-test circuit, and control the parameters of the pole-zero cancellation and shaping circuit to compensate the detector output pulse.

[0006] Furthermore, the signal conditioning circuit includes a transimpedance amplifier circuit and an inverting amplifier circuit connected in sequence. The transimpedance amplifier circuit is used to provide a stable operating voltage for the silicon photomultiplier tube, and the positive input terminal of the inverting amplifier circuit is provided with a bias voltage to balance the output voltage in the dark state.

[0007] Furthermore, the temperature detection circuit includes a low-voltage analog temperature sensor and an analog-to-digital converter, the analog-to-digital converter communicating with the programmable logic device via an IIC interface.

[0008] Furthermore, the LED self-test circuit includes an LED, a driving transistor, and a voltage follower. The programmable logic device generates a control signal to drive the voltage follower, and the output of the voltage follower controls the on / off state of the driving transistor.

[0009] Furthermore, the pole-zero cancellation and shaping circuit includes a pole-zero cancellation circuit and a low-pass shaping circuit, wherein the pole-zero cancellation circuit includes a resistor-capacitor network composed of digital potentiometers.

[0010] Furthermore, the programmable logic device controls the resistance value of the digital potentiometer via an SPI interface.

[0011] Furthermore, the compensation control IP core includes: an ADC driver module for reading temperature detection data and calculating ambient temperature; an LED control module for generating modulation signals to drive the LED self-test circuit; a digital potentiometer control module for adjusting the resistance value of the digital potentiometer according to the irradiation compensation coefficient; and a temperature and irradiation compensation module for compensating pulse data according to ambient temperature, temperature compensation coefficient, and irradiation compensation coefficient.

[0012] Accordingly, this application also provides a photoelectric detection method for self-testing and compensating for temperature and radiation damage in perovskites, comprising: setting an initial temperature compensation coefficient and an irradiation compensation coefficient; before the detector operates, controlling the LED self-test circuit through the programmable logic device to generate a self-test light pulse and acquiring the processed self-test pulse signal waveform; adjusting the irradiation compensation coefficient according to the shape of the self-test pulse signal waveform and controlling the resistance value of the digital potentiometer in the pole-zero cancellation and shaping circuit; monitoring the ambient temperature in real time through the temperature detection circuit when the detector operates; and compensating the detected radiation pulse signal by combining the real-time ambient temperature, the temperature compensation coefficient, and the adjusted irradiation compensation coefficient with the programmable logic device.

[0013] The beneficial effects of this invention are as follows: By integrating the optical coupling, signal conditioning, environmental sensing, self-testing, adjustable signal processing, and programmable compensation modules of the perovskite scintillator and silicon photomultiplier tube into one unit, it can not only capture signal deviations caused by changes in ambient temperature and irradiation damage in real time, but also optimize the tailing and noise problems of the perovskite signal through pole-zero cancellation and shaping circuits. At the same time, it can achieve coordinated adaptive compensation for temperature and irradiation damage by using the compensation control IP core of the programmable logic device, which not only improves the stability of detection accuracy, but also extends the effective working life of the system. Attached Figure Description

[0014] Figure 1 A schematic diagram of a photoelectric detection system for self-detection and compensation of temperature and irradiation damage in perovskites, provided in an embodiment of this application;

[0015] Figure 2 A schematic diagram of a transimpedance amplifier circuit in a photoelectric detection system for temperature and irradiation damage self-testing compensation of perovskites, provided for an embodiment of this application;

[0016] Figure 3 A schematic diagram of an inverting amplifier circuit in a photoelectric detection system for self-testing and compensating for temperature and irradiation damage in perovskites, provided for an embodiment of this application;

[0017] Figure 4 A schematic diagram of a temperature detection circuit for a self-testing and compensation photoelectric detection system for temperature and irradiation damage in perovskites, provided in an embodiment of this application;

[0018] Figure 5 A schematic diagram of an LED self-test circuit for a photoelectric detection system for temperature and irradiation damage self-testing compensation of perovskites, provided in an embodiment of this application;

[0019] Figure 6 A schematic diagram of a pole-zero phase cancellation and shaping circuit in a self-testing and compensation photoelectric detection system for temperature and irradiation damage of perovskites, provided in an embodiment of this application;

[0020] Figure 7 A schematic diagram of a programmable logic device circuit for a self-testing and compensating photoelectric detection system for temperature and irradiation damage in perovskites, provided for an embodiment of this application;

[0021] Figure 8 This is a schematic flowchart illustrating a photoelectric detection method for self-inspection and compensation of temperature and irradiation damage in perovskites, provided as an embodiment of this application. Detailed Implementation

[0022] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0023] In this invention, the terms "system" and "network" are used interchangeably. "Multiple" refers to two or more; therefore, in this invention, "multiple" can also be understood as "at least two." "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Additionally, the character " / ", unless otherwise specified, generally indicates that the preceding and following related objects have an "or" relationship. Furthermore, it should be understood that in the description of this invention, terms such as "first" and "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or order.

[0024] Example 1:

[0025] In perovskite photoelectric detection scenarios, existing systems lack an integrated control scheme designed for the characteristics of perovskite materials. This results in an inability to address the issue of perovskite scintillator light yield fluctuations with temperature, a lack of effective calibration methods for material damage caused by long-term irradiation, and difficulty in suppressing signal trailing and noise. Ultimately, this leads to a significant decrease in detection accuracy with environmental changes and insufficient long-term stability.

[0026] like Figure 1-7As shown in the embodiment of this application, a photoelectric detection system for temperature and radiation damage self-testing compensation suitable for perovskites is provided, comprising: a perovskite scintillator; a silicon photomultiplier tube optically coupled to the perovskite scintillator for converting an optical signal into a current signal; a signal conditioning circuit connected to the silicon photomultiplier tube for amplifying and polarity-converting the current signal and outputting a voltage pulse signal; a temperature detection circuit for real-time monitoring of ambient temperature and outputting a temperature detection signal; an LED self-test circuit for emitting a self-test optical signal to the perovskite scintillator; and a signal conditioning circuit connected to the signal conditioning circuit. The pole-zero cancellation and shaping circuit at the output terminal is used to eliminate tailing and filter noise in the voltage pulse signal. The programmable logic device is connected to the output terminals of the temperature detection circuit, the LED self-test circuit, the pole-zero cancellation and shaping circuit, and the signal conditioning circuit, respectively. The programmable logic device has a compensation control IP core instantiated within it, which is used to generate temperature compensation coefficient and irradiation compensation coefficient based on the temperature detection signal and the self-test pulse signal generated by the LED self-test circuit, and control the parameters of the pole-zero cancellation and shaping circuit to compensate the detector output pulse.

[0027] In another possible embodiment, the perovskite scintillator is first optically coupled to a silicon photomultiplier tube. When radiation interacts with the perovskite scintillator to generate a light signal, the silicon photomultiplier tube converts the light signal into a current signal. Subsequently, a signal conditioning circuit is connected to the silicon photomultiplier tube to amplify and reverse the polarity of the current signal to obtain a voltage pulse signal. Simultaneously, a temperature detection circuit collects the ambient temperature in real time and outputs a temperature detection signal, while an LED self-test circuit emits a self-test light signal to the perovskite scintillator to generate a self-test pulse signal. Next, a pole-zero cancellation and shaping circuit is connected to the output of the signal conditioning circuit to perform tail cancellation and noise filtering on the voltage pulse signal. Finally, a programmable logic device establishes communication with the outputs of the temperature detection circuit, the LED self-test circuit, the pole-zero cancellation and shaping circuit, and the signal conditioning circuit. Its built-in compensation control IP core receives the temperature detection signal and the self-test pulse signal, generates corresponding temperature compensation coefficients and irradiation compensation coefficients, and controls the parameters of the pole-zero cancellation and shaping circuit to complete the precise compensation of the detector output pulse.

[0028] The programmable logic device internally includes an ADS1110 chip driver module, an LED control module, an AD5270 control module, and a temperature and irradiation compensation module. The ADS1110 chip driver module is used to control the operation of the ADS1110 and read the voltage value to calculate the ambient temperature. The LED control module is used to generate the LED driving signal and control the LED light generation cycle. The AD5270 control module is used to adjust the operation of the pole-zero phase cancellation circuit. The temperature and irradiation compensation module compensates the detection results based on the obtained ambient temperature value to correct the energy spectrum. The input ports of the programmable logic device include a clock terminal (CLK), a reset terminal (REST), a temperature compensation coefficient, an irradiation compensation coefficient, an SPI communication input signal (SPI input), an IIC communication input signal (IIC input), and a pulse data input (DATA_IN). Its output terminals include a module busy signal (BUSY), an ambient temperature value (TEMP), an LED control signal (LED_CTRL), an SPI communication output signal (SPI output), an IIC communication output signal (IIC output), and a compensated pulse data output (DATA_OUT).

[0029] The silicon photomultiplier tube also integrates a temperature compensation circuit and an irradiation compensation circuit. Before the silicon photomultiplier tube operates, a modulated LED driving signal can be generated via a programmable logic device, causing the LED self-test circuit to generate a self-test pulse. By observing and measuring the waveform of the self-test pulse signal and adjusting the irradiation compensation coefficient, the potential of the AD5270 chip is adjusted, thereby adjusting the operation of the pole-zero cancellation circuit and adjusting the self-test pulse waveform to the ideal condition. When the silicon photomultiplier tube is operating, it monitors the ambient temperature in real time and adjusts the temperature compensation state accordingly based on the temperature compensation coefficient.

[0030] By integrating the optical coupling, signal conditioning, environmental sensing, self-testing, adjustable signal processing, and programmable compensation modules of perovskite scintillators and silicon photomultiplier tubes, it can not only capture signal deviations caused by changes in ambient temperature and irradiation damage in real time, but also optimize the tailing and noise problems of perovskite signals through pole-zero cancellation and shaping circuits. At the same time, it can achieve coordinated adaptive compensation for temperature and irradiation damage by using the compensation control IP core of programmable logic devices, which not only improves the stability of detection accuracy, but also extends the effective working life of the system.

[0031] In the signal conditioning circuit of existing perovskite detection systems, the operating voltage of silicon photomultiplier tubes is easily affected by interference and fluctuates, resulting in poor stability of current-to-voltage conversion. At the same time, the output voltage of the circuit is offset in the dark state, which can mask the effective information of weak signals and affect the accuracy of subsequent signal processing.

[0032] In this embodiment, the signal conditioning circuit includes a transimpedance amplifier circuit and an inverting amplifier circuit connected in sequence. The transimpedance amplifier circuit is used to provide a stable operating voltage for the silicon photomultiplier tube, and the positive input terminal of the inverting amplifier circuit is provided with a bias voltage to balance the output voltage in the dark state.

[0033] In another possible embodiment, the signal conditioning circuit consists of a transimpedance amplifier circuit and an inverting amplifier circuit connected in sequence. The transimpedance amplifier circuit is first connected to the silicon photomultiplier tube to provide it with a stable operating voltage, and at the same time converts the current signal output by the silicon photomultiplier tube into a voltage signal. Then the voltage signal is transmitted to the inverting amplifier circuit. The positive input terminal of the inverting amplifier circuit is connected to a preset bias voltage, which converts the polarity of the voltage signal and balances the output voltage in the dark state, and finally outputs a stable voltage pulse signal to the subsequent circuit.

[0034] By cascading a transimpedance amplifier circuit and an inverting amplifier circuit, the transimpedance amplifier circuit can stabilize the operating voltage of the silicon photomultiplier tube and avoid fluctuations during the current signal conversion process; the bias voltage at the positive input terminal of the inverting amplifier circuit can accurately balance the output voltage in the dark state and eliminate dark state interference, which not only ensures the stability of signal conditioning, but also improves the extraction accuracy of the effective signal.

[0035] Existing perovskite detection systems often employ discrete components for temperature monitoring, resulting in low temperature detection accuracy and poor communication interface compatibility. This leads to high latency and errors in temperature data transmission, making it impossible to provide real-time feedback on ambient temperature changes to support accurate temperature compensation.

[0036] In this embodiment, the temperature detection circuit includes a low-voltage analog temperature sensor and an analog-to-digital converter, wherein the analog-to-digital converter communicates with the programmable logic device via an IIC interface.

[0037] In another possible embodiment, the low-voltage analog temperature sensor in the temperature detection circuit first collects the temperature of the environment where the detector is located in real time and outputs the corresponding analog temperature signal; then the analog-to-digital converter is connected to the low-voltage analog temperature sensor and converts the analog temperature signal into a digital temperature detection signal; finally, the analog-to-digital converter establishes a connection with the programmable logic device through the IIC communication interface and transmits the digital temperature detection signal to the programmable logic device for use by the compensation control IP core.

[0038] The solution of using a low-pressure analog temperature sensor combined with an analog-to-digital converter not only improves the accuracy of temperature detection, but also achieves efficient connection between the analog-to-digital converter and programmable logic devices through the IIC communication interface, ensuring the real-time and reliable transmission of temperature data and providing a stable data foundation for subsequent accurate temperature compensation.

[0039] Perovskite detection systems lack effective self-testing mechanisms and cannot detect material damage caused by long-term irradiation. At the same time, the driving control of traditional self-testing signals has poor stability, making it difficult to generate reliable self-testing optical signals for system calibration.

[0040] In this embodiment, the LED self-test circuit includes an LED, a driving transistor, and a voltage follower. The programmable logic device generates a control signal to drive the voltage follower, and the output of the voltage follower controls the on / off state of the driving transistor.

[0041] In another possible embodiment, the LED self-test circuit consists of an LED, a driver transistor, and a voltage follower. The programmable logic device first generates a control signal to control the operation of the LED; this control signal is transmitted to the voltage follower for buffering to ensure signal stability; then the output of the voltage follower is connected to the driver transistor to control the switching of the driver transistor. When the driver transistor is turned on, the LED starts and emits a self-test light signal to the perovskite scintillator, generating a corresponding self-test pulse signal.

[0042] The LED self-test circuit enables real-time self-testing of irradiation damage. The voltage follower ensures the stability of the drive signal, while the precise control of the programmable logic device can trigger the self-test light signal as needed. This provides a reliable self-test pulse basis for irradiation damage compensation and also improves the system's self-calibration capability and long-term reliability.

[0043] In the signal processing stage of perovskite detection systems, the trailing phenomenon of perovskite signals is difficult to eliminate, and the parameters of traditional pole-zero cancellation circuits are fixed and cannot adapt to signal changes. At the same time, the noise filtering effect is limited, resulting in poor signal quality for subsequent compensation and detection.

[0044] In this embodiment of the application, the pole-zero cancellation and shaping circuit includes a pole-zero cancellation circuit and a low-pass shaping circuit, and the pole-zero cancellation circuit includes a resistor-capacitor network composed of digital potentiometers.

[0045] In another possible embodiment, the pole-zero cancellation and shaping circuit consists of a pole-zero cancellation circuit and a low-pass shaping circuit. The pole-zero cancellation circuit is first connected to the output of the signal conditioning circuit. Its internal resistor-capacitor network, which includes a digital potentiometer, processes the voltage pulse signal to eliminate the tailing phenomenon unique to perovskite signals. Then, the signal is transmitted to the low-pass shaping circuit, where high-frequency noise is filtered out by low-pass filtering, and an optimized voltage pulse signal is output.

[0046] The pole-zero cancellation circuit integrates a resistor-capacitor network composed of digital potentiometers, which can flexibly adjust parameters to specifically eliminate the trailing of perovskite signals; the low-pass shaping circuit can further filter out high-frequency noise, which not only optimizes the purity of the signal, but also improves the adaptability of signal processing to different operating conditions.

[0047] The parameters of the pole-zero cancellation circuit are mostly adjusted manually or in a fixed manner, which cannot be automatically adjusted according to the changes in signal characteristics caused by temperature changes and radiation damage. This results in insufficient adaptability of signal processing and difficulty in continuously ensuring signal quality.

[0048] In this embodiment, the programmable logic device controls the resistance value of the digital potentiometer via an SPI interface.

[0049] In another possible embodiment, the programmable logic device establishes a communication connection with the digital potentiometer in the pole-zero cancellation circuit through an SPI interface. When the compensation control IP core of the programmable logic device determines that the parameters of the pole-zero cancellation circuit need to be adjusted based on the temperature detection signal or self-test pulse signal, it will send a control command to the digital potentiometer through the SPI interface to adjust the resistance value of the digital potentiometer, thereby optimizing the tail elimination effect of the pole-zero cancellation circuit.

[0050] The SPI interface enables programmable logic devices to automatically control the resistance of digital potentiometers. The parameters of the pole-zero phase cancellation circuit can be flexibly adjusted according to temperature compensation requirements and radiation damage conditions, which not only improves the dynamic adaptability of signal processing but also realizes the automated control of the system.

[0051] The compensation control of perovskite detection systems often uses distributed modules, which have poor coordination between modules and cannot integrate the processes of temperature data reading, self-test control, parameter adjustment and signal compensation, resulting in low compensation efficiency and insufficient accuracy.

[0052] In this embodiment, the compensation control IP core includes: an ADC driver module for reading temperature detection data and calculating ambient temperature; an LED control module for generating a modulation signal to drive the LED self-test circuit; a digital potentiometer control module for adjusting the resistance value of the digital potentiometer according to the irradiation compensation coefficient; and a temperature and irradiation compensation module for compensating pulse data according to ambient temperature, temperature compensation coefficient, and irradiation compensation coefficient.

[0053] In another possible embodiment, the compensation control IP core is built into the programmable logic device. First, the ADC driver module reads the digital temperature detection signal transmitted by the temperature detection circuit and calculates the current ambient temperature. Then, the LED control module generates a modulation signal and transmits it to the LED self-test circuit to drive it to generate a self-test light signal. At the same time, the digital potentiometer control module sends a resistance adjustment command to the digital potentiometer in the pole-zero cancellation circuit according to the irradiation compensation coefficient. Finally, the temperature and irradiation compensation module combines the current ambient temperature, the pre-stored temperature compensation coefficient, and the adjusted irradiation compensation coefficient to perform real-time compensation processing on the optimized voltage pulse signal.

[0054] The compensation control IP core integrates ADC driver, LED control, digital potentiometer control, and temperature and radiation compensation modules, realizing the integrated coordination of various functions. This not only improves the efficiency and accuracy of compensation control but also ensures the real-time performance of temperature and radiation damage compensation.

[0055] Example 2:

[0056] like Figure 8 As shown in the embodiments of this application, a photoelectric detection method for temperature and radiation damage self-test compensation suitable for perovskites is also provided, including: setting an initial temperature compensation coefficient and an irradiation compensation coefficient; before the detector operates, controlling the LED self-test circuit through the programmable logic device to generate a self-test light pulse and acquiring the processed self-test pulse signal waveform; adjusting the irradiation compensation coefficient according to the shape of the self-test pulse signal waveform and controlling the resistance value of the digital potentiometer in the pole-zero cancellation and shaping circuit; when the detector operates, monitoring the ambient temperature in real time through the temperature detection circuit; and the programmable logic device compensating for the detected radiation pulse signal by combining the real-time ambient temperature, the temperature compensation coefficient, and the adjusted irradiation compensation coefficient.

[0057] In another possible embodiment, the initial values ​​of the temperature compensation coefficient and the irradiation compensation coefficient are first preset. Before the detector officially starts working, the programmable logic device controls the LED self-test circuit to generate a self-test light pulse and acquire the processed self-test pulse signal waveform. Then, the irradiation compensation coefficient is adjusted according to the shape of the waveform, and the resistance value of the digital potentiometer in the pole-zero cancellation and shaping circuit is controlled by the programmable logic device. During the operation of the detector, the temperature detection circuit continuously collects the ambient temperature and transmits it to the programmable logic device. Finally, the programmable logic device combines the real-time ambient temperature, the preset temperature compensation coefficient, and the adjusted irradiation compensation coefficient to perform real-time compensation on the detected X-ray pulse signal and output accurate detection results.

[0058] By performing self-calibration before operation and real-time dynamic compensation during operation, the entire process of temperature and irradiation damage is adapted. This not only ensures the calibration accuracy of the system before detection, but also allows for adjustment of compensation parameters according to changes in environment and operating conditions during operation, thereby improving the consistency and accuracy of detection results.

[0059] The optional embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details in the above embodiments. Within the scope of the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical solutions of the embodiments of the present invention, and these simple modifications all fall within the protection scope of the embodiments of the present invention.

[0060] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the embodiments of the present invention will not describe the various possible combinations separately.

[0061] Furthermore, various different implementations of the present invention can be combined arbitrarily, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed in the present invention.

Claims

1. A temperature and irradiation damage self-checking compensation photodetection system suitable for perovskite, characterized in that, include: Perovskite scintillators; A silicon photomultiplier tube optically coupled to the perovskite scintillator is used to convert optical signals into current signals; The signal conditioning circuit connected to the silicon photomultiplier tube is used to amplify and reverse the polarity of the current signal and output a voltage pulse signal. The signal conditioning circuit includes a transimpedance amplifier circuit and an inverting amplifier circuit connected in sequence. The transimpedance amplifier circuit is used to provide a stable operating voltage for the silicon photomultiplier tube. The positive input terminal of the inverting amplifier circuit is provided with a bias voltage to balance the output voltage in the dark state. Temperature detection circuit used to monitor ambient temperature in real time and output temperature detection signal; An LED self-test circuit for emitting a self-test light signal to the perovskite scintillator; The pole-zero phase cancellation and shaping circuit connected to the output of the signal conditioning circuit is used to perform tail cancellation and noise filtering on the voltage pulse signal; A programmable logic device is connected to the output terminals of the temperature detection circuit, the LED self-test circuit, the pole-zero cancellation and shaping circuit, and the signal conditioning circuit, respectively. The programmable logic device has a compensation control IP core, which is used to generate a temperature compensation coefficient and an irradiation compensation coefficient based on the temperature detection signal and the self-test pulse signal generated by the LED self-test circuit, and control the parameters of the pole-zero cancellation and shaping circuit to compensate the detector output pulse.

2. The photoelectric detection system for temperature and radiation damage self-checking and compensation of perovskites according to claim 1, characterized in that, The temperature detection circuit includes a low-voltage analog temperature sensor and an analog-to-digital converter, which communicates with the programmable logic device via an IIC interface.

3. The photoelectric detection system for temperature and radiation damage self-checking and compensation of perovskites according to claim 1, characterized in that, The LED self-test circuit includes an LED, a driver transistor, and a voltage follower. The programmable logic device generates a control signal to drive the voltage follower, and the output of the voltage follower controls the on / off state of the driver transistor.

4. The photoelectric detection system for temperature and radiation damage self-checking and compensation of perovskites according to claim 1, characterized in that, The pole-zero phase cancellation and shaping circuit includes a pole-zero phase cancellation circuit and a low-pass shaping circuit. The pole-zero phase cancellation circuit includes a resistor-capacitor network composed of digital potentiometers.

5. The photoelectric detection system for temperature and radiation damage self-compensation in perovskites according to claim 4, characterized in that, The programmable logic device controls the resistance value of the digital potentiometer via an SPI interface.

6. The photoelectric detection system for temperature and radiation damage self-compensation in perovskites according to claim 5, characterized in that, The compensation control IP core includes: An ADC driver module used to read temperature detection data and calculate ambient temperature; LED control module for generating modulation signals to drive the LED self-test circuit; A digital potentiometer control module for adjusting the resistance value of the digital potentiometer according to the irradiation compensation coefficient; Temperature and irradiation compensation module used to compensate pulse data based on ambient temperature, temperature compensation coefficient, and irradiation compensation coefficient.

7. A photoelectric detection method for self-compensation of temperature and irradiation damage in perovskites, characterized in that, The photoelectric detection system for temperature and radiation damage self-compensation of perovskites, as described in any one of claims 1-6, comprises: Set the initial temperature compensation coefficient and irradiation compensation coefficient; Before the detector operates, the programmable logic device controls the LED self-test circuit to generate a self-test light pulse and acquires the processed self-test pulse signal waveform. Based on the shape of the self-test pulse signal waveform, the irradiation compensation coefficient is adjusted, and the resistance value of the digital potentiometer in the pole-zero cancellation and shaping circuit is controlled. When the detector is working, the ambient temperature is monitored in real time through the temperature detection circuit; The programmable logic device compensates for the detected ray pulse signal by combining the real-time ambient temperature, temperature compensation coefficient, and adjusted irradiation compensation coefficient.

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