Total radiation dose monitoring system and method based on crystal oscillator

Abstract

The invention discloses a total radiation dose monitoring system and method based on a crystal oscillator. The technical problems that an existing total radiation dose detector is large in size, high in cost, complex in structure, limited in application environment and the like are mainly solved. The monitoring system comprises a power supply, a crystal oscillator, a data acquisition module and a data processing module, the power supply is respectively connected with the crystal oscillator, the data acquisition module and the data processing module; the crystal oscillator is used for outputting different oscillation frequency information in radiation fields with different total radiation doses; the input end of the data acquisition module is connected with the crystal oscillator, the output end is connected with the data processing module, and the data acquisition module is used for acquiring oscillation frequency information of the crystal oscillator and transmitting the information to the data processing module; the data processing module is used for calculating and outputting the total radiation dose of the radiation field. Meanwhile, the invention further provides a monitoring method based on the monitoring system, and accurate monitoring of the total radiation dose of an unknown radiation field can be achieved.

Description

Technical Field

[0001] The invention relates to a radiation dose monitoring system, and in particular to a total radiation dose monitoring system and method based on a crystal oscillator. Background Art

[0002] In high-radiation environments, electronic devices often experience performance degradation or even failure. At the same time, since radiation damage is usually irreversible, it is particularly important to monitor the total radiation dose (TID) of electronic devices and the radiation field they are in.

[0003] At present, the monitoring methods of total radiation dose mainly rely on various types of detectors, such as semiconductor detectors, scintillation detectors, gas detectors, etc. These detectors estimate the radiation dose of the radiation field by directly measuring radiation particles or radiation photons.

[0004] Semiconductor detectors (such as silicon detectors) are often used to detect high-energy radiation, sensing radiation by directly accumulating charge. This type of detector is very sensitive to low-dose radiation and can provide relatively accurate real-time monitoring, but it is large in size, high in cost, and requires complex preamplifier circuits and processing circuits, which makes it not sufficiently adaptable and feasible in some applications (such as aerospace, nuclear power plants, etc.).

[0005] Scintillation detectors use the photoelectric effect of scintillation crystals (such as NaI(Tl)) to detect radiation and convert it into optical signals. Although this type of detector has high sensitivity, it requires expensive photomultiplier tubes (PMTs) for signal reading, which increases the complexity and cost of the system. In addition, the response of scintillation detectors to some radiation may be nonlinear, resulting in low detection accuracy in certain radiation environments.

[0006] Gas detectors (such as gas proportional counters, Geiger counters, etc.) are often used to detect low-dose radiation, and the radiation dose is estimated by detecting the gas ionization process. This type of detector has a simple structure and is inexpensive, but its sensitivity, accuracy, and ability to respond to different types of radiation are limited. In addition, it is large in size, requires regular calibration, and is relatively cumbersome to operate and maintain.

[0007] In addition, other methods such as using thermoluminescence detectors (TLDs) and neutron detectors can usually provide higher accuracy, but they are costly and complex, especially in places with complex radiation environments, and are difficult to operate stably for a long time. Summary of the invention

[0008] The purpose of the present invention is to solve the technical problems of existing total radiation dose detectors such as large size, high cost, complex structure and limited application environment, and to provide a total radiation dose monitoring system and method based on a crystal oscillator.

[0009] To achieve the above objectives, the technical solutions provided by the present invention are:

[0010] A total radiation dose monitoring system based on a crystal oscillator, which is special in that:

[0011] Including power supply, crystal oscillator, data acquisition module and data processing module;

[0012] The power supply is respectively connected to the crystal oscillator, the data acquisition module and the data processing module for power supply;

[0013] The crystal oscillator is arranged in the radiation field to be measured, and is used to output different oscillation frequency information under the radiation field with different total radiation doses;

[0014] The input end of the data acquisition module is connected to the crystal oscillator, and the output end is connected to the data processing module, and is used to collect oscillation frequency information of the crystal oscillator and transmit it to the data processing module;

[0015] The data processing module is used to calculate the oscillation frequency information and output the total radiation dose of the radiation field.

[0016] Furthermore, it also includes a temperature sensor arranged in the radiation field to be measured, whose output end is connected to the data acquisition module for collecting temperature information of the radiation field.

[0017] Furthermore, it also includes a display module and a storage module respectively connected to the data processing module, and used for real-time display and storage of parameter information of the radiation field respectively.

[0018] Furthermore, the data acquisition module is a frequency meter or a clock circuit.

[0019] Furthermore, the crystal oscillator is a crystal oscillator whose frequency varies linearly with the total radiation dose.

[0020] Furthermore, the crystal oscillator is a quartz crystal oscillator.

[0021] At the same time, the present invention also provides a method for monitoring the total radiation dose based on a crystal oscillator, comprising the following steps:

[0022] Step [1], calibrate the crystal oscillator;

[0023] 1.1. Assemble the above-mentioned total radiation dose monitoring system based on the crystal oscillator and place the crystal oscillator in a radiation field with a known total radiation dose;

[0024] 1.2. The frequency value output by the crystal oscillator under a known total radiation dose is collected through the data acquisition module and transmitted to the data processing module;

[0025] 1.3. Change the total radiation dose, and in accordance with step 1.2, obtain the frequency values ​​output by the crystal oscillator under multiple different total radiation doses through the data acquisition module, and transmit them to the data processing module;

[0026] 1.4. The data processing module calculates the relationship curve between the frequency of the crystal oscillator and the total radiation dose based on the frequency values ​​obtained in steps 1.2 and 1.3;

[0027] Step [2], placing the calibrated crystal oscillator in the radiation field to be measured, obtaining the frequency value output by the crystal oscillator through the data acquisition module and transmitting it to the data processing module;

[0028] Step [3]: output the total radiation dose of the radiation field to be measured through the data processing module in combination with the relationship curve between the frequency of the crystal oscillator and the total radiation dose, thereby realizing the total radiation dose monitoring based on the crystal oscillator.

[0029] Furthermore, step [1] also includes 1.5, by changing the ambient temperature of the radiation field and following steps 1.1 to 1.4, a relationship curve between the frequency of the crystal oscillator and the total radiation dose at different temperatures is obtained, thereby completing the calibration of the crystal oscillator.

[0030] Furthermore, step [2] also includes a step in which the data acquisition module collects temperature information of the radiation field to be measured through a temperature sensor and transmits the temperature information to the data processing module.

[0031] Furthermore, step [3] is specifically that the data processing module outputs the total radiation dose of the radiation field to be measured based on the temperature information of the radiation field to be measured and the relationship curve between the frequency of the crystal oscillator and the total radiation dose at different temperatures, thereby realizing the total radiation dose monitoring based on the crystal oscillator.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] 1. The total radiation dose monitoring system based on the crystal oscillator provided by the present invention has a simple structure, wherein the crystal oscillator is used to output different oscillation frequency information under the radiation field with different total radiation doses. Based on this, the total radiation dose of the radiation field can be obtained according to the frequency change of the crystal oscillator, thereby realizing real-time monitoring of the total radiation dose of the radiation field.

[0034] 2. The crystal oscillator-based total radiation dose monitoring system provided by the present invention also includes a temperature sensor, so that more comprehensive radiation field information can be obtained.

[0035] 3. In the total radiation dose monitoring system based on the crystal oscillator provided by the present invention, since the crystal oscillator itself has high temperature stability and long-term stability, it can be applied to long-term monitoring in more complex and harsh radiation environments.

[0036] 4. The crystal oscillator-based total radiation dose monitoring system provided by the present invention also includes a display module and a storage module, thereby realizing visual monitoring, as well as storage and reuse of monitoring information.

[0037] 5. The total radiation dose monitoring system based on the crystal oscillator provided by the present invention has low cost, is easy to integrate, can be applied to a variety of radiation environments, and is easy to promote and use.

[0038] 6. The total radiation dose monitoring method based on the crystal oscillator provided by the present invention is simple to operate and can obtain accurate total radiation dose regardless of whether it is a low-dose or high-dose radiation environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 The figure is a schematic structural diagram of an embodiment of a radiation dose monitoring system based on a crystal oscillator according to the present invention.

[0040] Figure 2 The figure is a flow chart of an embodiment of a method for monitoring radiation dose based on a crystal oscillator according to the present invention. DETAILED DESCRIPTION

[0041] In order to make the purpose, advantages and features of the present invention more clear, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not used to limit the scope of protection of the present invention.

[0042] like Figure 1 As shown, this embodiment provides a total radiation dose monitoring system based on a crystal oscillator, including a power supply, a crystal oscillator, a data acquisition module and a data processing module.

[0043] The power supply is connected to the crystal oscillator, data acquisition module and data processing module respectively, and is used to supply power to each module to ensure the stable operation of the entire system.

[0044] The mechanism of radiation affecting the crystal oscillator is usually through the interaction between the radiation particles and the atoms and molecules in the crystal, which causes the physical properties of the crystal oscillator material to change, thereby affecting its oscillation frequency. Under a certain radiation dose, the frequency change of the crystal oscillator shows a linear or nearly linear relationship. Therefore, in this embodiment, the crystal oscillator is set in the radiation field to be measured, and the total radiation dose is monitored by the crystal oscillator. Specifically, a crystal oscillator whose frequency changes linearly with the total radiation dose is selected, such as a quartz crystal oscillator with strong radiation sensitivity, whose frequency change increases with the increase of the total radiation dose, especially within a certain radiation intensity range, the frequency change shows a linear relationship with the total radiation dose. In addition, the selection of the crystal oscillator should also consider factors such as its operating temperature range, stability, and radiation response characteristics.

[0045] The input end of the data acquisition module is connected to the crystal oscillator, and the output end is connected to the data processing module, which is used to collect the oscillation frequency information of the crystal oscillator and transmit it to the data processing module. The data acquisition module uses a high-precision frequency meter or clock circuit, and other high-precision acquisition equipment can also be selected. The data acquisition module can maintain a high acquisition accuracy under different environmental conditions (different total radiation doses, different temperatures, different humidity conditions, etc.), thereby monitoring and collecting the frequency changes of the crystal oscillator in real time.

[0046] The data processing module is used to calculate and output the total radiation dose of the radiation field. It is mainly based on the received frequency information and the known total radiation dose to establish a relationship curve between frequency and total radiation dose, that is, to establish a frequency-total dose relationship model. This model serves as a reference model for monitoring unknown radiation fields and can quickly and accurately obtain the total radiation dose of unknown radiation fields.

[0047] In order to achieve accurate monitoring of the radiation environment, the present embodiment further includes a temperature sensor disposed in the radiation field to be measured, the output end of which is connected to the data acquisition module for collecting temperature information of the radiation field.

[0048] In addition, in order to realize visual monitoring, the present embodiment also includes a display module and a storage module respectively connected to the data processing module, wherein the display module can display the monitoring information in real time for users to view in real time. The storage module can store the monitoring information in real time for subsequent analysis and evaluation.

[0049] A wireless transmission module connected to the crystal oscillator and the data receiving module respectively may be placed in the radiation field as needed. The wireless transmission module may collect frequency information in real time and realize long-distance information transmission, thereby improving the safety of the test process.

[0050] This embodiment can be applied to different radiation environments, such as radiation fields of gamma rays, X-rays or particle radiation, and can achieve long-term monitoring, and can achieve accurate dose output regardless of low or high dose radiation.

[0051] This embodiment can be applied in a high radiation environment to monitor the total dose simply and accurately, and can provide higher accuracy and stability.

[0052] like Figure 2 As shown, this embodiment also provides a method for monitoring total radiation dose based on a crystal oscillator, comprising the following steps:

[0053] Step [1]: Calibrate the crystal oscillator

[0054] 1.1. Assemble the above-mentioned crystal oscillator-based radiation total dose monitoring system and place the crystal oscillator in a radiation field with a known total radiation dose.

[0055] 1.2. The frequency value output by the crystal oscillator under a known total radiation dose is collected through the data acquisition module and transmitted to the data processing module.

[0056] 1.3. Change the total radiation dose, and in accordance with step 1.2, obtain the frequency values ​​output by the crystal oscillator under multiple different total radiation doses through the data acquisition module, and transmit them to the data processing module.

[0057] 1.4. The data processing module calculates the relationship curve between the frequency of the crystal oscillator and the total radiation dose based on the frequency values ​​obtained in steps 1.2 and 1.3.

[0058] 1.5. By changing the ambient temperature of the radiation field and following steps 1.1 to 1.4, the relationship curve between the frequency of the crystal oscillator and the total radiation dose at different temperatures is fitted to complete the calibration of the crystal oscillator.

[0059] Step [2], place the calibrated crystal oscillator in the radiation field to be measured, obtain the frequency value output by the crystal oscillator through the data acquisition module and transmit it to the data processing module, and at the same time, collect the temperature information of the radiation field to be measured through the temperature sensor and transmit it to the data processing module through the data acquisition module.

[0060] Step [3], the data processing module outputs the total radiation dose of the radiation field to be measured based on the temperature information of the radiation field to be measured and the relationship curve between the frequency of the crystal oscillator and the total radiation dose at different temperatures obtained in step 1.5, thereby realizing the total radiation dose monitoring based on the crystal oscillator.

[0061] The radiation dose rate of the radiation field to be measured can also be calculated based on the total radiation dose combined with a fixed time, and the monitoring information can be displayed in real time through the display module, and the relevant information can be stored in time through the storage module to facilitate the later analysis and utilization of the data.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present invention.

Claims

1. A total radiation dose monitoring system based on a crystal oscillator, characterized in that: Including power supply, crystal oscillator, data acquisition module and data processing module; The power supply is respectively connected to the crystal oscillator, the data acquisition module and the data processing module for power supply; The crystal oscillator is arranged in the radiation field to be measured, and is used to output different oscillation frequency information under the radiation field with different total radiation doses; The input end of the data acquisition module is connected to the crystal oscillator, and the output end is connected to the data processing module, and is used to collect oscillation frequency information of the crystal oscillator and transmit it to the data processing module; The data processing module is used to calculate the oscillation frequency information and output the total radiation dose of the radiation field.

2. The total radiation dose monitoring system based on a crystal oscillator according to claim 1, characterized in that: It also includes a temperature sensor arranged in the radiation field to be measured, whose output end is connected to the data acquisition module for collecting temperature information of the radiation field.

3. The total radiation dose monitoring system based on a crystal oscillator according to claim 1 or 2, characterized in that: It also includes a display module and a storage module respectively connected to the data processing module, which are respectively used for real-time display and storage of parameter information of the radiation field.

4. The total radiation dose monitoring system based on a crystal oscillator according to claim 3, characterized in that: The data acquisition module is a frequency meter or a clock circuit.

5. The total radiation dose monitoring system based on a crystal oscillator according to claim 1, characterized in that: The crystal oscillator is a crystal oscillator whose frequency varies linearly with the total radiation dose.

6. The total radiation dose monitoring system based on a crystal oscillator according to claim 5, characterized in that: The crystal oscillator is a quartz crystal oscillator.

7. A method for monitoring total radiation dose based on a crystal oscillator, characterized in that: The following steps are involved: Step [1], calibrate the crystal oscillator; 1.

1. Assemble the total radiation dose monitoring system based on a crystal oscillator as described in any one of claims 1 to 6, and place the crystal oscillator in a radiation field with a known total radiation dose; 1.

2. The frequency value output by the crystal oscillator under a known total radiation dose is collected through the data acquisition module and transmitted to the data processing module; 1.

3. Change the total radiation dose, and in accordance with step 1.2, obtain the frequency values ​​output by the crystal oscillator under multiple different total radiation doses through the data acquisition module, and transmit them to the data processing module; 1.

4. The data processing module calculates the relationship curve between the frequency of the crystal oscillator and the total radiation dose based on the frequency values ​​obtained in steps 1.2 and 1.3; Step [2], placing the calibrated crystal oscillator in the radiation field to be measured, obtaining the frequency value output by the crystal oscillator through the data acquisition module and transmitting it to the data processing module; Step [3]: output the total radiation dose of the radiation field to be measured through the data processing module in combination with the relationship curve between the frequency of the crystal oscillator and the total radiation dose, thereby realizing the total radiation dose monitoring based on the crystal oscillator.

8. The method for monitoring total radiation dose based on a crystal oscillator according to claim 7, characterized in that: Step [1] also includes 1.5, by changing the ambient temperature of the radiation field and following steps 1.1 to 1.4, a relationship curve between the frequency of the crystal oscillator and the total radiation dose at different temperatures is obtained, thereby completing the calibration of the crystal oscillator.

9. The method for monitoring total radiation dose based on a crystal oscillator according to claim 8, characterized in that: Step [2] also includes the step of the data acquisition module collecting temperature information of the radiation field to be measured through the temperature sensor and transmitting the information to the data processing module.

10. The method for monitoring total radiation dose based on a crystal oscillator according to claim 9, characterized in that: Step [3] is specifically that the data processing module outputs the total radiation dose of the radiation field to be measured based on the temperature information of the radiation field to be measured and the relationship curve between the frequency of the crystal oscillator and the total radiation dose at different temperatures, thereby realizing the total radiation dose monitoring based on the crystal oscillator.

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