Double-GM counting tube and scintillator crystal detector intelligent switching radiation detection system and method, electronic equipment and storage medium

Abstract

The invention belongs to the technical field of radiation detection, and provides a double-GM counting tube and scintillator crystal detector intelligent switching radiation detection system and method, electronic equipment and a storage medium, the system comprises a power supply generation module, an analog signal processing module, a digital signal acquisition module and a digital signal control selection module which are connected in sequence; the digital signal control selection module comprises a control chip, and a scintillation transistor on-off control circuit, a low-range GM tube on-off control circuit and a high-range GM tube on-off control circuit which are respectively connected with the control chip; through the control chip, the scintillation transistor on-off control circuit, the low-range GM tube on-off control circuit and the high-range GM tube on-off control circuit, the most suitable detector is automatically selected according to the real-time radiation intensity, the stability and high efficiency of the system in different radiation intensity environments are ensured, and the monitoring accuracy and real-time performance are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of radiation detection, in particular to a dual GM counter tube and scintillator crystal detector intelligent switching radiation detection system, method, electronic device and storage medium. BACKGROUND

[0002] The scintillation crystal detection circuit is referred to as PMT. In recent years, some radiation detection systems attempt to combine low-range and high-range GM counter tubes with scintillator crystal detectors. This multi-detector combination can switch between different detectors under different radiation intensity conditions, so as to use high-range GM counter tubes in high radiation intensity and low-range GM counter tubes or scintillator crystal detectors in low radiation intensity, achieving the best measurement effect. This technical solution can solve the adaptability problem of a single detector in different radiation environments and provide more comprehensive and accurate radiation monitoring capability.

[0003] However, although the dual-detector system and multi-detector combination scheme has great advantages in theory, there are still some deficiencies and challenges in the prior art. First, the existing dual-detector system usually relies on manual switching to select the appropriate detector, which results in slow response speed of the system and cannot switch in time according to the change of radiation intensity, affecting the accuracy and reliability of real-time monitoring. In addition, the existing system has low integration, and the dispersed hardware makes the device bulky, has high power consumption, and the coordination between the detectors and modules is poor, which easily causes system stability problems. On the other hand, the switching mechanism of the dual GM counter tube system and the scintillator crystal detector in the prior art is often rough and cannot be automatically adjusted in real time, resulting in certain errors in the measurement process, especially in the environment where high radiation intensity and low radiation intensity frequently change. Moreover, the power supplies for the two different radiation monitoring methods are different, the high voltage of the scintillator crystal detector is 750V, and the high voltage of the GM tube is 400V. The two different power supplies only detect one result, which greatly increases the consumption of useless electric energy. SUMMARY

[0004] In order to overcome the deficiencies of the prior art, the purpose of the present application is to provide a dual GM counter tube and scintillator crystal detector intelligent switching radiation detection system, method, electronic device and storage medium, which solves the problems of the inability of traditional technology to adapt to the change of radiation intensity in real time and the delay and error caused by manual switching method.

[0005] To achieve the above-mentioned purpose, the present application provides the following solutions: The application discloses a kind of double GM counting tube and scintillator crystal detector intelligent switching radiation detection system, including: power supply generation module, analog signal processing module, digital signal acquisition module and digital signal control selection module connected in sequence;The digital signal control selection module includes: control chip and respectively with the control chip connection scintillation transistor on-off control circuit, low range GM tube on-off control circuit, high range GM tube on-off control circuit;The control chip includes: PMT_En pin, ADC_COMP_IN pin, GM_En1 pin, GM_Input1 pin, GM_En2 pin; The PMT_En pin is connected with the 1 pin of the U3 unit in the scintillation transistor on-off control circuit;The GM_En1 pin is connected with the 1 pin of the U1 unit in the low range GM tube on-off control circuit;The GM_Input1 pin is connected with the Anode+ pin of the first GM_Tube unit in the low range GM tube on-off control circuit through three series resistors;The GM_En2 pin is connected with the 1 pin of the U2 unit in the high range GM tube on-off control circuit;The ADC_COMP_IN pin is physically connected with the scintillation crystal detection circuit; The scintillation transistor on-off control circuit is used to start the scintillation crystal detection circuit when the PMT_En pin is high voltage;The ADC_COMP_IN pin is used to detect the radiation intensity of the scintillation crystal detection circuit by the control chip, and when the radiation intensity detected exceeds the range of scintillator crystal, the PMT_En pin is closed in turn and the GM_En1 pin is opened;The low range GM tube on-off control circuit is used to start the low range GM counter tube when the GM_En1 pin is high voltage;The GM_Input1 pin is used to close the GM_En1 pin in turn and open the GM_En2 pin when the count rate of the low range GM counter tube is detected to reach the preset maximum value;The high range GM tube on-off control circuit is used to start the high range GM counter tube when the GM_En2 pin is high voltage.

[0006] The application discloses the following technical effects: The application provides a double GM counting tube and scintillator crystal detector intelligent switching radiation detection system, method, electronic equipment and storage medium, through control chip, scintillation transistor on-off control circuit, low range GM tube on-off control circuit, high range GM tube on-off control circuit, solve the problem that traditional technology cannot adapt to radiation intensity change in real time and manual switching method causes delay and error, realize automatic selection of the most suitable detector according to real-time radiation intensity. BRIEF DESCRIPTION OF DRAWINGS

[0007] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description only represent some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0008] Figure 1 A schematic diagram of a dual GM counter tube and scintillator crystal detector intelligent switching radiation detection system is provided for the embodiments of the present application. Figure 2 A high-range GM tube on-off control circuit diagram is provided for the embodiments of the present application. Figure 3 A low-range GM tube on-off control circuit diagram is provided for the embodiments of the present application. Figure 4 A scintillation transistor on-off control circuit diagram is provided for the embodiments of the present application. Figure 5 A control chip schematic diagram is provided for the embodiments of the present application. Figure 6 A workflow diagram is provided for the embodiments of the present application. DETAILED DESCRIPTION

[0009] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments only represent some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0010] The purpose of the present application is to provide a dual GM counter tube and scintillator crystal detector intelligent switching radiation detection system, method, electronic device and storage medium, which solves the problem that the conventional technology cannot adapt to the change of radiation intensity in real time and the manual switching method causes delay and error.

[0011] In order to make the above-mentioned purposes, features and advantages of the present application more apparent and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0012] Figure 1 A schematic diagram of a dual GM counter tube and scintillator crystal detector intelligent switching radiation detection system is provided for the embodiments of the present application, as shown in Figure 1As shown, the present application provides a double GM counter tube and scintillator crystal detector intelligent switching radiation detection system, comprising: power supply generation module, analog signal processing module, digital signal acquisition module and digital signal control selection module connected in turn; the digital signal control selection module comprises: a control chip and a scintillation transistor on-off control circuit, a low-range GM tube on-off control circuit and a high-range GM tube on-off control circuit connected with the control chip respectively; the control chip comprises: PMT_En pin, ADC_COMP_IN pin, GM_En1 pin, GM_Input1 pin and GM_En2 pin; The PMT_En pin is connected with the 1 pin of the U3 unit in the scintillation transistor on-off control circuit; the GM_En1 pin is connected with the 1 pin of the U1 unit in the low-range GM tube on-off control circuit; the GM_Input1 pin is connected with the Anode+ pin of the first GM_Tube unit in the low-range GM tube on-off control circuit through three series resistors; the GM_En2 pin is connected with the 1 pin of the U2 unit in the high-range GM tube on-off control circuit; the ADC_COMP_IN pin is physically connected with the scintillation crystal detection circuit; The scintillation transistor on-off control circuit is used to start the scintillation crystal detection circuit when the PMT_En pin is high voltage; the ADC_COMP_IN pin is used to detect the radiation intensity of the scintillation crystal detection circuit by the control chip (based on the algorithm disclosed in the patent with application number 202211175982.9), and when the radiation intensity is detected to exceed the range of the scintillator crystal, the PMT_En pin is closed and the GM_En1 pin is opened in turn; the low-range GM tube on-off control circuit is used to start the low-range GM counter tube when the GM_En1 pin is high voltage; the GM_Input1 pin is used to close the GM_En1 pin and open the GM_En2 pin in turn when the count rate of the low-range GM counter tube is detected to reach the preset maximum value; the high-range GM tube on-off control circuit is used to start the high-range GM counter tube when the GM_En2 pin is high voltage.

[0013] Reference Figures 2 to 5, the chip U4 enables the PMT_En pin, the 1 pin and the 2 pin of U3 are connected, the 3 pin and the 4 pin of U3 are connected, the base of Q5 is low, therefore the source and the drain of Q5 are turned on, and the base of Q6 is high, the source and the drain of Q6 are turned on, at this time, the scintillation crystal detection circuit starts to detect radiation, and the type of the radiation source can be identified through low range detection, and the power supply module provides 750V high voltage power supply for the scintillation crystal detection circuit. If the radiation intensity of the radiation source exceeds the range, the corresponding count rate of the scintillation crystal detection circuit will be higher than a certain value, and the chip U4 detects the maximum value written in the ADC_COMP_IN pin, then the PMT_En pin is closed, the GM_En1 pin is opened, the 1 pin and the 2 pin of U1 are connected, the 3 pin and the 4 pin of U1 are connected, therefore the base of Q1 is low, at this time, the source and the drain of Q1 are turned on, and the base of Q2 is high, the source and the drain of Q2 are turned on, at this time, the low range GM tube radiation detection starts to work, and the power supply module provides 400V high voltage power supply for the GM tube radiation monitoring. If the radiation intensity of the radiation source exceeds the range, the corresponding count rate of the low range GM detection will be higher than a certain value, and the chip U4 detects the maximum value written in the GM_Input1 pin, then the GM_En1 is closed, the GM_En2 is opened, the 1 pin and the 2 pin of U2 are connected, the 3 pin and the 4 pin of U2 are connected, therefore the base of Q3 is low, the source and the drain of Q3 are turned on, and the base of Q4 is high, the source and the drain of Q4 are turned on, at this time, the high range GM tube radiation detection starts to work. From now on, the intelligent conversion of the scintillation crystal radiation detection, the low range GM tube and the high range GM tube radiation monitoring is completed.

[0014] Reference Figure 6 , system initialization and scintillator crystal start. When the system starts, the microcontroller starts the PMT (photomultiplier tube, i.e. scintillation crystal detection circuit) through the enable signal, and turns on the power supply of the scintillator crystal detector. In a low radiation intensity environment, the system uses the scintillator crystal detector for radiation monitoring. At this time, the power supply module provides 750V high voltage power supply for the scintillator crystal, ensuring the normal work of the scintillator crystal detector. By starting the scintillator crystal, the system can accurately identify the type of low range radiation source and provide high precision radiation measurement.

[0015] Further, the low range GM counter tube starts. When it is detected that the radiation intensity exceeds the range of the scintillator crystal (i.e. the radiation count rate of the radiation source exceeds the preset threshold value), the microcontroller detects the maximum value input by the ADC (analog-to-digital converter) module, and then closes the enable signal of the PMT and switches to the low range GM counter tube. The system can handle higher intensity radiation sources while maintaining high measurement accuracy by automatically switching to the low range GM counter tube.

[0016] Specifically, the high-range GM counter is activated. When the count rate of the low-range GM counter reaches its maximum value, the microcontroller detects the maximum value of GM_Input1, shuts down the low-range GM counter, and switches to the high-range GM counter. At this time, the system automatically switches to the high-range GM counter for radiation monitoring. By intelligently switching to the high-range GM counter, the system can cope with high-radiation-intensity scenarios, ensuring stable operation even in extremely high-radiation environments.

[0017] As an optional implementation, this embodiment also provides a method for intelligent switching radiation detection between dual GM counter tubes and a scintillator crystal detector. This includes: The scintillation crystal detection circuit is activated, and radiation monitoring is performed using the scintillation crystal detection circuit. When the radiation intensity detected by the scintillation crystal detection circuit exceeds the preset range, the scintillation crystal detection circuit is turned off, and the system switches to use a low-range GM counter tube for radiation monitoring. When the count rate of the low-range GM counter is detected to reach a preset maximum value, the low-range GM counter is turned off, and the system switches to use the high-range GM counter for radiation monitoring.

[0018] As an optional implementation, this embodiment also provides an electronic device, including: at least one processor and a memory communicatively connected to the processor; wherein the memory stores instructions executable by the processor, the instructions being executed by the processor to enable the processor to execute the aforementioned intelligent switching radiation detection method for dual GM counter tubes and scintillator crystal detectors.

[0019] As an optional implementation, this embodiment also provides a non-transient computer-readable storage medium storing computer instructions, which are used to cause a computer to execute the aforementioned intelligent switching radiation detection method of dual GM counter tube and scintillator crystal detector.

[0020] The beneficial effects of this invention are as follows: This invention, through a control chip, a scintillation transistor on / off control circuit, a low-range GM tube on / off control circuit, and a high-range GM tube on / off control circuit, achieves automatic selection of the most suitable detector based on real-time radiation intensity, ensuring the stability and efficiency of the system under different radiation intensity environments, and improving the accuracy and real-time performance of monitoring.

[0021] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0022] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. Furthermore, those skilled in the art will recognize that, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A radiation detection system with intelligent switching between dual GM counter tubes and scintillator crystal detectors, characterized in that, include: The power generation module, analog signal processing module, digital signal acquisition module, and digital signal control and selection module are connected in sequence. The digital signal control selection module includes: a control chip and a flashing transistor on / off control circuit, a low-range GM transistor on / off control circuit, and a high-range GM transistor on / off control circuit, all connected to the control chip respectively; the control chip includes: PMT_En pin, ADC_COMP_IN pin, GM_En1 pin, GM_Input1 pin, and GM_En2 pin; The PMT_En pin is connected to pin 1 of unit U3 in the scintillation transistor on / off control circuit; the GM_En1 pin is connected to pin 1 of unit U1 in the low-range GM transistor on / off control circuit; the GM_Input1 pin is connected to the Anode+ pin of the first GM_Tube unit in the low-range GM transistor on / off control circuit through three series resistors; the GM_En2 pin is connected to pin 1 of unit U2 in the high-range GM transistor on / off control circuit; and the ADC_COMP_IN pin is physically connected to the scintillation crystal detection circuit. The scintillation transistor on / off control circuit is used to activate the scintillation crystal detection circuit when the PMT_En pin is high; the ADC_COMP_IN pin is used to detect the radiation intensity of the scintillation crystal detection circuit using the control chip, and when the detected radiation intensity exceeds the range of the scintillator crystal, the PMT_En pin is turned off and the GM_En1 pin is turned on sequentially; the low-range GM tube on / off control circuit is used to activate the low-range GM counter when the GM_En1 pin is high; the GM_Input1 pin is used to turn off the GM_En1 pin and turn on the GM_En2 pin sequentially when the count rate of the low-range GM counter reaches a preset maximum value; the high-range GM tube on / off control circuit is used to activate the high-range GM counter when the GM_En2 pin is high.

2. The intelligent switching radiation detection system for dual GM counter tubes and scintillator crystal detectors according to claim 1, characterized in that, The flashing transistor on / off control circuit includes: the U3 unit, the Q5 unit, and the Q6 unit; Pin 4 of the U3 unit is connected to pin G of the Q5 unit; pin 4 of the U3 unit is connected to pin S of the Q5 unit through a resistor; pin D of the Q5 unit is connected to pin 1 of the Q6 unit through a resistor; pin 2 of the Q6 unit is connected to pin PMT_P and pin PMT_HV_OUT of the scintillation crystal detection circuit, respectively.

3. The intelligent switching radiation detection system for dual GM counter tubes and scintillator crystal detectors according to claim 1, characterized in that, The low-range GM tube on / off control circuit includes: the U1 unit, the Q1 unit, the Q2 unit, and the first GM_Tube unit; Pin 4 of the U1 unit is connected to pin G of the Q1 unit; pin 4 of the U1 unit is connected to pin S of the Q1 unit through a resistor; pin D of the Q1 unit is connected to pin 1 of the Q2 unit through a resistor; pin 2 of the Q2 unit is connected to pin Cathode of the first GM_Tube unit through two series resistors.

4. The intelligent switching radiation detection system for dual GM counter tubes and scintillator crystal detectors according to claim 1, characterized in that, The high-range GM tube on / off control circuit includes: the U2 unit, the Q3 unit, the Q4 unit, and the second GM_Tube unit; Pin 4 of the U2 unit is connected to pin G of the Q3 unit; pin 4 of the U2 unit is connected to pin S of the Q3 unit through a resistor; pin D of the Q3 unit is connected to pin 1 of the Q4 unit through a resistor; pin 2 of the Q4 unit is connected to pin Cathode of the second GM_Tube unit through two series resistors.

5. A method for intelligent switching between dual GM counter tubes and scintillator crystal detectors for radiation detection, characterized in that, include: The scintillation crystal detection circuit is activated, and radiation monitoring is performed using the scintillation crystal detection circuit. When the radiation intensity detected by the scintillation crystal detection circuit exceeds the preset range, the scintillation crystal detection circuit is turned off, and the system switches to use a low-range GM counter tube for radiation monitoring. When the count rate of the low-range GM counter is detected to reach a preset maximum value, the low-range GM counter is turned off, and the system switches to use the high-range GM counter for radiation monitoring.

6. An electronic device, characterized in that, include: At least one processor, and a memory communicatively connected to the processor; wherein the memory stores instructions executable by the processor, the instructions being executed by the processor to enable the processor to perform the intelligent switching radiation detection method of a dual GM counter tube and scintillator crystal detector as described in claim 5.

7. A non-transitory computer-readable storage medium storing computer instructions, characterized in that, The computer instructions are used to enable the computer to execute the intelligent switching radiation detection method for dual GM counter tubes and scintillator crystal detectors as described in claim 5.

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