Nuclear emergency personal dosimeter and radiation monitoring system based on Beidou technology

Abstract

The utility model provides a Beidou technology-based nuclear emergency personal dosimeter and radiation monitoring system, and the system comprises a radiation detection processing module which comprises a radiation detector which is configured to detect a nuclear radiation dose; the wireless transmission module comprises a wireless transmission assembly and an antenna module, the antenna module is configured to receive an output signal transmitted by the wireless transmission assembly, the wireless transmission assembly comprises a ground communication module and a Beidou module, and the wireless transmission assembly is configured to perform communication depending on the ground communication module or the Beidou module; the Beidou module comprises an RDSS communication module and an RNSS positioning module, and the output signal at least comprises a first signal transmitted by the RDSS communication module; and the ground communication module comprises a 5G module, and the output signal at least comprises a third signal transmitted by the 5G module. The application provides guarantee for remote communication of the personal dosimeter, so that the personal dosimeter has all-weather and large-range communication capability.

Description

Technical Field

[0001] The present application mainly relates to the field of nuclear emergency radiation monitoring technology, and in particular to a nuclear emergency personal dosimeter and radiation monitoring system based on Beidou technology. Background Art

[0002] As an important part of the national emergency system and the last barrier to nuclear safety, nuclear emergency is a highly technical and wide-ranging social system project concerning national security. With the continuous improvement of the BeiDou satellite navigation system, it has been able to provide services such as positioning, navigation and timing (RNSS), global short message communication (GSMC), international search and rescue (SAR), satellite-based augmentation (SBAS), ground-based augmentation (GAS), and precise single point positioning (RSMC). The BeiDou satellite navigation system has the ability to provide fully autonomous and controllable space-time services, providing a new means of technical realization for fine management, precise scheduling, and precise command in the emergency field. However, the application of BeiDou technology in the nuclear field is still in its infancy, and lags far behind public security, transportation, and other emergency fields. At present, there is no mature technical solution in the field for the comprehensive combination and expansion of the two.

[0003] Accelerating the innovation and development of new nuclear emergency Beidou equipment is one of the important links in promoting Beidou application. Personal dosimeters have a wide range of applications and are commonly used equipment in the field of nuclear emergency. At present, existing technologies have a solid technical foundation and production conditions for the development of personal dosimeters, but the research on personal dosimeters that can be used in various stages of nuclear emergency is still in its infancy.

[0004] At present, the personal dosimeters used in nuclear accident emergency radiation monitoring mainly monitor the normal operation of nuclear facilities, and cannot conduct remote radiation monitoring to meet the requirements of off-site nuclear emergencies. Furthermore, there is a problem of delayed reporting of personnel exposure dose monitoring, which leads to a lag in nuclear emergency command and rescue.

[0005] Specifically, personal dosimeters used in nuclear emergency radiation monitoring need to meet the requirements of positioning and wireless communication. At present, the positioning function of personal dosimeters can be realized based on satellite positioning, mobile location base station systems, etc. The wireless communication of personal electronic dosimeters can cover different communication frequency bands, but these communication methods rely on surrounding signal base stations or can only be used for short-distance data transmission. Off-site nuclear emergency command and rescue work faces the problem of failure of ground signal base stations after serious nuclear accidents. In addition, there is a lack of relevant technical means to achieve stable real-time reporting of personnel dose monitoring data at the personal dosimeter end. Utility Model Content

[0006] The technical problem to be solved by this application is to provide a nuclear emergency personal dosimeter and monitoring system and method based on Beidou technology, which can provide guarantee for the remote communication of the personal dosimeter and enable the personal dosimeter to have all-weather and large-scale communication capabilities.

[0007] To solve the above technical problems, the present application provides a nuclear emergency personal dosimeter based on Beidou technology, including: a radiation detection and processing module, including a radiation detector, the radiation detector is configured to detect nuclear radiation dose; and a wireless transmission module, including a wireless transmission component and an antenna module, the antenna module is configured to receive an output signal transmitted by the wireless transmission component, wherein the wireless transmission component includes a ground communication module and a Beidou module, and the wireless transmission component is configured to rely on the ground communication module or the Beidou module for communication; the Beidou module includes an RDSS communication module and an RNSS positioning module, and the output signal includes at least a first signal transmitted by the RDSS communication module; and the ground communication module includes a 5G module, and the output signal includes at least a third signal transmitted by the 5G module.

[0008] Optionally, the ground communication module further includes a Wi-Fi module and a Bluetooth module, and the output signal further includes a fourth signal transmitted by the Wi-Fi module and a fifth signal transmitted by the Bluetooth module.

[0009] Optionally, the wireless transmission module also includes a multiplexer, and the RDSS communication module, the RNSS positioning module, the 5G module, the Wi-Fi module and the Bluetooth module exchange signals with the antenna module through the multiplexer.

[0010] Optionally, the RDSS communication module includes an RDSS radio frequency module and an RDSS baseband processor, and the RNSS positioning module includes an RNSS radio frequency module and an RNSS baseband processor, wherein the RDSS baseband processor is used to receive and process the signal processed by the RDSS radio frequency module and send a signal to the RDSS radio frequency module, the RDSS radio frequency module is used to receive a first input signal returned by the antenna module, and filter and amplify the first input signal, and the RDSS radio frequency module is also used to send the output signal modulated by the RDSS baseband processor to the antenna module; the RNSS baseband processor is used to process the signal sent by the RNSS radio frequency module, and the RNSS radio frequency module is used to receive a second input signal returned by the antenna module, and filter and amplify the second input signal.

[0011] Optionally, the personal dosimeter further includes a power supply module configured to supply power to the radiation detection and processing module and the wireless transmission module with a supply voltage.

[0012] Optionally, the radiation detection processing module also includes a voltage conversion module, which is connected between the radiation detector and the power module, and the voltage conversion module is configured to convert the supply voltage of the power module into an operating voltage suitable for the radiation detector.

[0013] Optionally, the power supply module includes a lithium battery module, a wireless charging module and a power management module, and the radiation detection processing module also includes a status indication unit, wherein the input end of the power management module is connected to the lithium battery module and the wireless charging module, and the output end of the power management module is respectively connected to the voltage conversion module, the status indication unit and the wireless transmission component.

[0014] Optionally, the radiation detection processing module also includes an embedded management module MCU and a data storage module, a button module, an OLED data display module, an infrared communication module and a nuclear electronics module interconnected with the embedded management module MCU, wherein the nuclear electronics module is connected and configured to collect and amplify the charge signal detected by the radiation detector.

[0015] Optionally, the embedded management module MCU includes an STC32G single-chip microcomputer, and the core electronics module is a charge-sensitive preamplifier ASIC module.

[0016] Optionally, the nuclear emergency personal dosimeter is configured to transmit accident information to the nuclear emergency center through the RDSS communication module or the 5G module, and the accident information includes dose rate information and / or positioning information.

[0017] To solve the above technical problems, the present application provides a nuclear emergency radiation monitoring system based on Beidou technology, including: a nuclear emergency center; and the nuclear emergency personal dosimeter based on Beidou technology as described above, wherein the nuclear emergency personal dosimeter is configured to transmit accident information to the nuclear emergency center through an RDSS communication module or a 5G module in an off-site nuclear emergency state.

[0018] Compared with the existing technology, this application is based on the positioning and short message capabilities of Beidou technology. Through the combination of multiple communication technologies, it can provide guarantee for the remote communication of personal dosimeters, so that personal dosimeters have high positioning accuracy, data transmission capability, and terminal rapid response. The multi-functional function can meet the requirements of personal dosimeter positioning accuracy and reliable communication capability in nuclear emergency application scenarios. At the same time, it also enables personal dosimeters to have all-weather, large-scale communication capabilities, providing technical and data support for off-site nuclear emergency command and rescue. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are included to provide a further understanding of the present application. They are included and constitute a part of the present application. The accompanying drawings illustrate embodiments of the present application and together with the present specification serve to explain the principles of the present application. In the accompanying drawings:

[0020] Figure 1 This is a schematic diagram of a structural module of a nuclear emergency personal dosimeter based on Beidou technology in an embodiment of the present application;

[0021] Figure 2 It is a schematic diagram of a structural module of a wireless transmission module in a nuclear emergency personal dosimeter based on Beidou technology in one embodiment of the present application;

[0022] Figure 3 It is a module schematic diagram of a nuclear emergency radiation monitoring system based on Beidou technology in one embodiment of the present application;

[0023] Figure 4-5 It is a flow chart of a nuclear emergency radiation monitoring method based on Beidou technology in one embodiment of the present application. DETAILED DESCRIPTION

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for the description of the embodiments. Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, the present application can also be applied to other similar scenarios based on these drawings without creative work. Unless it is obvious from the language environment or otherwise explained, the same reference numerals in the figures represent the same structure or operation.

[0025] As shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "an" and / or "the" do not refer to the singular and may also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of the steps and elements that have been clearly identified, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements.

[0026] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so that once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0027] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0028] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0029] In addition, it should be noted that the use of words such as "first" and "second" to define components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above words have no special meaning and cannot be understood as limiting the scope of protection of this application. In addition, although the terms used in this application are selected from well-known and commonly used terms, some terms mentioned in the specification of this application may be selected by the applicant at his or her discretion, and their detailed meanings are explained in the relevant parts of the description of this article. In addition, it is required to understand this application not only by the actual terms used, but also by the meaning implied by each term.

[0030] This application refers to Figure 1 and Figure 2 A nuclear emergency personal dosimeter 10 based on BeiDou technology (hereinafter referred to as "personal dosimeter 10") is proposed, in which Figure 1 is a schematic diagram of the structural module of the personal dosimeter 10, Figure 2 Schematic diagram of the structural module of the wireless transmission component in the personal dosimeter 10.

[0031] First refer to Figure 1 The personal dosimeter 10 mainly includes a radiation detection processing module, the radiation detection processing module includes a radiation detector, and the radiation detector is configured to detect nuclear radiation dose; a wireless transmission module, including a wireless transmission component and an antenna module, the antenna module is configured to receive an output signal transmitted by the wireless transmission component, wherein the wireless transmission component includes a ground communication module and a Beidou module, and the wireless transmission component is configured to rely on the ground communication module or the Beidou module for communication; the Beidou module includes an RDSS communication module and an RNSS positioning module, and the output signal includes at least a first signal transmitted by the RDSS communication module; and the ground communication module includes a 5G module, and the output signal includes at least a third signal transmitted by the 5G module. Among them, the RNSS positioning module supports single Beidou positioning and B1C signal transmission mode, and the ground communication module can also support 5G NSA and SA dual modes backward compatible with 4G / 3G networks.

[0032] Furthermore, the personal dosimeter 10 also includes a power supply module, which is configured to supply power to the radiation detection processing module and the wireless transmission module with a power supply voltage. The radiation detection processing module also includes a voltage conversion module, which is connected between the radiation detector and the power supply module, and the voltage conversion module is configured to convert the power supply voltage of the power supply module into a working voltage adapted to the radiation detector. In this embodiment, for example, when the power supply module outputs a voltage of 3V, the voltage conversion module converts the 3V voltage output by the power supply module into a 10V voltage required by the radiation detector for operation.

[0033] More specifically, the power module includes a lithium battery module, a wireless charging module and a power management module, and the radiation detection processing module also includes a status indication unit, wherein the input end of the power management module is connected to the lithium battery module and the wireless charging module, and the output end of the power management module is respectively connected to the voltage conversion module, the status indication unit and the wireless transmission component. Exemplarily, the power module uses a lithium battery module for power supply, and has a wireless charging module that can wirelessly charge the personal dosimeter 10. In this embodiment, the power management module can handle different power supply sources and allocate different output paths. Its specific implementation method can refer to existing common power management modules or power management chips and other devices. Since it is not the focus of this solution, it will not be expanded here. Further, the power module can also be equipped with a charging indicator light (not shown) that can display the charging status and full prompt. The personal dosimeter 10 uses a low-power, high-efficiency power module to improve the power supply efficiency. The power management module supports battery power monitoring and battery life monitoring. If the battery is aging, it also has the function of reminding to replace the battery.

[0034] Furthermore, the radiation detection processing module also includes an embedded management module MCU and a data storage module, a button module, an OLED data display module, an infrared communication module and a nuclear electronics module interconnected with the embedded management module MCU, thereby realizing a variety of different extended functions of the personal dosimeter 10.

[0035] For example, a 15mm×15mm planar CZT semiconductor can be used as a radiation detector. When the radiation rays are incident on the radiation detection processing module, the radiation energy is deposited, and the nuclear electronics module connected to the planar CZT semiconductor converts the radiation energy into an electrical signal through the photoelectric effect, Compton effect or electron pair effect. Based on the PN junction diode, the radiation detector can work at room temperature, has ultra-low power consumption and ultra-small size, and can meet various needs.

[0036] Specifically, the embedded management module MCU includes an STC32G single-chip microcomputer. Preferably, the STC32G single-chip microcomputer can be a low-power MCU with three power-saving working modes, active mode, standby mode, and shutdown mode, with power consumption of 400μA, 1.3μA, and 0.22μA respectively. The power management module in the power module is connected to the STC32G single-chip microcomputer through a status indication unit, providing a 3V voltage for the STC32G single-chip microcomputer to work. The STC32G single-chip microcomputer can realize the functions of power module management, display and operation status indication interface of the OLED data display module, RTC interface, key module control, receiving charge sensitive preamplifier ASIC module output counting, etc.

[0037] In the module connected to the embedded management module MCU, the nuclear electronics module is connected and configured to collect and amplify the charge signal detected by the radiation detector. The nuclear electronics module is preferably a charge sensitive preamplifier ASIC module, the ASIC module is connected to the embedded management module MCU, and the embedded management module MCU can receive the radiation counting information output by the ASIC module.

[0038] In this embodiment, the OLED data display module is also connected to the embedded management module MCU, and can display the dose of nuclear radiation, dose rate, location of the personal dosimeter 10, time, wirelessly sent and received messages, power and other information. The OLED data display module is preferably a customized 43mm×11mm dot matrix display module OLED. The power consumption of the OLED data display module is about 3mA when it is displayed in full screen, but in actual application, the OLED data display module is basically non-full screen display, so the power consumption can be controlled at about 1mA. The OLED data display module is connected to the embedded management module MCU through the LED bus, thereby realizing the one-way data transmission function of the embedded management module MCU to the OLED data display module.

[0039] The button module is also connected to the embedded management module MCU. The button module can be a physical button, which can realize the function of displaying the dose equivalent interface by default after the personal dosimeter 10 is turned on. Short press the button to switch to the dose equivalent rate interface, short press the button again to switch to the use time interface, short press the button again to switch to the use time interface, short press the button again to switch to the location information interface; long press the button to enter the parameter viewing interface, long press the button again to enter the parameter setting "SETTING" interface.

[0040] In addition, the infrared communication module is also connected to the embedded management module MCU for data communication with external hardware devices (such as readers), including measurement data transmission, parameter setting, external control interface, information association, data management, etc., and point-to-point communication is guaranteed through anti-collision strategies.

[0041] In this embodiment, the embedded management module MCU is also connected to a data storage module, and the data storage module is preferably 128KB FLASH and 12KB RAM. The data storage module is connected to the embedded management module MCU to realize the data storage function.

[0042] Reference Figure 2 The ground communication module also includes a Wi-Fi module and a Bluetooth module. The output signal also includes a fourth signal transmitted by the Wi-Fi module and a fifth signal transmitted by the Bluetooth module. Exemplarily, the ground communication module can support 2.4G&5G dual-band Wi-Fi.

[0043] On the other hand, the wireless transmission module also includes a multiplexer, and the RDSS communication module, RNSS positioning module, 5G module, Wi-Fi module and Bluetooth module in the wireless transmission component exchange signals with the antenna module through the multiplexer. Specifically, the embedded management module MCU is connected to the wireless transmission module through communication integration and UART serial communication protocol. Based on the UART serial communication protocol, remote transmission of radiation dose information and parameter distribution can be achieved. The multiplexer allows mobile devices to communicate in multiple LTE bands at the same time, avoid interference between bands, and achieve carrier aggregation.

[0044] In this embodiment, preferably, the RDSS communication module includes an RDSS radio frequency module and an RDSS baseband processor, and the RNSS positioning module includes an RNSS radio frequency module and an RNSS baseband processor, wherein the RDSS baseband processor is used to receive and process the signal processed by the RDSS radio frequency module and send a signal to the RDSS radio frequency module, the RDSS radio frequency module is used to receive the first input signal returned by the antenna module, and filter and amplify the first input signal, and the RDSS radio frequency module is also used to send the output signal modulated by the RDSS baseband processor to the antenna module; the RNSS baseband processor is used to process the signal sent by the RNSS radio frequency module, and the RNSS radio frequency module is used to receive the second input signal returned by the antenna module, and filter and amplify the second input signal. Wherein, the frequency range of the first input signal is 2491.75±8.16MHz, and the frequency range of the second input signal is 1575.42±32.736MHz(B1C).

[0045] Furthermore, the output frequency range of the RDSS radio frequency module is 1614.26±4.08MHz (Lf1) or 1618.34±4.08MHz (Lf2), the communication success rate is greater than 95%, and the signal receiving sensitivity can reach -123dBm. Further preferably, the RNSS positioning module includes an RNSS radio frequency module and an RNSS baseband processor. The RNSS baseband processor is used to process the signal sent by the RNSS radio frequency module, the RNSS radio frequency module is used to receive the signal within the RNSS receiving frequency range received by the antenna module and filter and amplify it, and the RNSS baseband processor RNSS baseband processor RNSS positioning module can achieve a positioning accuracy of less than 8m horizontally and less than 10m in elevation.

[0046] In this embodiment, different from the prior art, the nuclear emergency personal dosimeter 10 is preferably configured to transmit accident information to the nuclear emergency center through the RDSS communication module or the 5G module, and the accident information includes dose rate information and / or positioning information. Optionally, when the 5G module is unavailable in a nuclear emergency state, the RDSS communication module is turned on to exchange information with the off-site nuclear emergency center, providing effective protection for the remote communication of the personal dosimeter 10, and significantly improving the large-scale communication capability of the personal dosimeter 10. Further preferably, in this embodiment, the Beidou module based on Beidou technology not only has an RNSS positioning module, but also has an RDSS communication module, so that it can not only obtain the precise positioning of the personal dosimeter 10 in an emergency state, but also can effectively realize information interaction with an off-site third-party platform, further improving the safety of the user of the personal dosimeter 10, not only enabling the outside world to obtain information about the personal dosimeter 10, but also actively sending information to the outside world.

[0047] Further preferably, the extended function of the personal dosimeter 10 in this embodiment also includes configuring an alarm module, and the alarm module is configured to issue an alarm when the nuclear radiation dose rate detected by the radiation detection and processing module is higher than the radiation threshold, prompting the operator to be in a dangerous state.

[0048] This application refers to Figure 3 A nuclear emergency radiation monitoring system 20 is proposed, which provides personnel dose monitoring by using a nuclear emergency personal dosimeter, including a nuclear emergency center 21 and a nuclear emergency personal dosimeter based on BeiDou technology proposed in any embodiment of the present application, such as the one described above with reference to Figure 1 and Figure 2 The nuclear emergency personal dosimeter 10 described, specifically, is configured in the nuclear emergency radiation monitoring system 20 to transmit accident information to the nuclear emergency center through the RDSS communication module or the 5G module in an off-site nuclear emergency state. The details of the nuclear emergency detection system 20 are further described below using the nuclear emergency personal dosimeter 10 as an example.

[0049] In this embodiment, when the personal dosimeter 10 operates normally, the ground communication module is preferably used to communicate between the personal dosimeter 10 and the nuclear emergency center 21. When the ground communication module receives signals of different frequency bands, different modules will be used to work. For example, when the ground communication module uses a Bluetooth module, the Bluetooth module will output the fifth signal received, the antenna module will receive the fifth signal sent by the Bluetooth module, and send the fifth signal to the nuclear emergency center 21. When the ground communication module uses a Wi-Fi module, the Wi-Fi module will output the fourth signal received, the antenna module will receive the fourth signal sent by the Wi-Fi module, and send the fourth signal to the nuclear emergency center 21. When the ground communication module uses a 5G module, the 5G module will output the third signal received, the antenna module will receive the third signal sent by the 5G module, and send the third signal to the nuclear emergency center 21. When the ground communication module fails to work properly, the RDSS communication module is enabled, and the antenna module transmits the first signal generated by the RDSS communication module to the nuclear emergency center 21. Regardless of using the ground communication module and the antenna module for communication or using the RDSS communication module and the antenna module for communication, the personal dosimeter 10 is positioned through the RNSS positioning module.

[0050] In order to better illustrate the module functions of the personal dosimeter 10, the present application further refers to Figure 4 and Figure 5 A nuclear emergency radiation monitoring method 30 based on BeiDou technology is proposed. A flowchart is used in this application to illustrate the operations performed by the system according to the embodiment of the present application. It should be understood that the previous or following operations are not necessarily performed precisely in order. On the contrary, various steps can be processed in reverse order or simultaneously. At the same time, other operations may be added to these processes, or one or more operations may be removed from these processes. The nuclear emergency radiation monitoring method 30 based on BeiDou technology includes steps S1 to S3:

[0051] S1: Continuously detecting the nuclear radiation dose through the radiation detection processing module in the nuclear emergency personal dosimeter 10, while only enabling the ground communication module and the RNSS positioning module in the nuclear emergency personal dosimeter;

[0052] S2: when the operation state of the nuclear emergency personal dosimeter is switched to the off-site nuclear emergency state, detecting whether the ground communication module in the nuclear emergency personal dosimeter is still available, and when the ground communication module is not available, enabling the RDSS communication module; and

[0053] S3: Send output signals to the nuclear emergency personal dosimeter through the RDSS communication module and antenna module.

[0054] Furthermore, the nuclear emergency radiation monitoring method 30 based on BeiDou technology also includes, after enabling the RDSS communication module, first determining whether the nuclear radiation dose exceeds a set threshold, and issuing an alarm when the determination result is yes.

[0055] When a nuclear accident occurs, the nuclear accident emergency status is divided into four levels: emergency standby, plant emergency, site emergency and off-site emergency, and the degree of danger gradually increases. Figure 5 , a specific implementation of the nuclear emergency radiation monitoring method 30 is further described in detail.

[0056] More specific reference Figure 5 , when the nuclear accident emergency state enters the off-site emergency stage, the operating state of the personal dosimeter 10 can be switched from the normal operating state to the off-site nuclear emergency mode. In the normal operating state, the RDSS communication module is not started to reduce the power consumption of the personal dosimeter 10. After entering the off-site nuclear emergency mode, the 5G module and the RNSS positioning module of the personal dosimeter 10 are first detected at the same time. If the personal dosimeter 10 can receive the data confirmation signal sent by the ground base station through the downlink, it is considered that the 5G module is available in the current state. The 5G module is used as the preferred communication method. When both the 5G module and the RNSS positioning module are available, it is determined whether the currently measured gamma dose rate exceeds the set threshold. If it exceeds the set threshold, the alarm is immediately activated to remind the wearer that the current position is facing radiation risk, and the dose rate information and personnel positioning information and other data are sent to the nuclear emergency center 21 in real time through the RDSS communication module. The alarm prompt of the personal dosimeter 10 will continue until the gamma radiation dose rate at the current position is lower than the set threshold. If the current dose rate is below the set threshold and there is no alarm, the dose rate information and personnel location information and other data are directly sent to the nuclear emergency center 21. Confirmation is performed after each data transmission. If a receipt is received, the data transmission is considered successful. Confirm the nuclear accident emergency status. If the current operating mode is still the off-site nuclear emergency mode, repeat the previous steps. The alarm prompt of the personal dosimeter 10 will continue until the gamma radiation dose rate at the current position is lower than the set threshold. If the current dose rate is below the set threshold and the personal dosimeter 10 is still alarming, stop the alarm to prevent the situation where the staff leaves the high-dose area and still alarms.

[0057] When the 5G module fails or one of the RNSS positioning modules is unavailable, the RDSS communication module is selected to start communication. If the RDSS communication module can operate normally, when the 5G module is unavailable but the RNSS positioning module is available, the dose rate and location information of the personal dosimeter 10 is sent to the nuclear emergency center 21 through the RDSS module; if the 5G module is available but the RNSS positioning module is unavailable, communication is performed between the 5G module and the nuclear emergency center 21. Since the RNSS positioning module cannot be used, the 5G module can only send dose rate information to the nuclear emergency center 21.

[0058] Further, after selecting the RDSS communication module for communication, the personal dosimeter 10 will establish a link with the nuclear emergency center 21 to perform remote radiation monitoring and automatic alarm functions. If the RDSS communication module is available, it is determined whether the currently measured gamma dose rate exceeds the set threshold. If it exceeds the set threshold, the alarm is immediately activated to remind the wearer that the current position is facing radiation risk, and the dose rate information and personnel location information and other data are sent to the nuclear emergency center 21 in real time through the RDSS communication module. The alarm prompt of the personal dosimeter 10 will continue until the gamma radiation dose rate at the current position is lower than the set threshold. If the current dose rate is below the set threshold and there is no alarm prompt, the dose rate information and personnel location information and other data are directly sent to the nuclear emergency center 21. Confirmation is performed after each data transmission. If a receipt is received, it is considered that the data has been successfully sent. Confirm the nuclear accident emergency state. If the current operating mode is still the off-site nuclear emergency mode, repeat the previous steps. The alarm prompt of the personal dosimeter 10 will continue until the gamma radiation dose rate at the current position is lower than the set threshold. If the current dose rate is below the set threshold and the personal dosimeter 10 is still alarming, the alarm will be stopped to prevent the situation where the worker leaves the high-dose area but the alarm is still on.

[0059] If both the 5G module and the RDSS communication module cannot be used, an error message is provided on the OLED data display module to display the abnormal communication status. Method 30 can achieve stable real-time reporting of personnel dose monitoring data at the personal dosimeter end, providing technical and data support for nuclear emergency command and rescue.

[0060] The basic concepts have been described above. Obviously, for those skilled in the art, the above application disclosure is only an example and does not constitute a limitation of the present application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements and amendments to the present application. Such modifications, improvements and amendments are suggested in the present application, so such modifications, improvements and amendments still belong to the spirit and scope of the exemplary embodiments of the present application.

[0061] At the same time, the present application uses specific words to describe the embodiments of the present application. For example, "one embodiment", "an embodiment", and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more in different positions in this specification does not necessarily refer to the same embodiment. In addition, some features, structures or characteristics in one or more embodiments of the present application can be appropriately combined.

[0062] Similarly, it should be noted that in order to simplify the description of the disclosure of this application and thus help understand one or more application embodiments, in the above description of the embodiments of this application, multiple features are sometimes merged into one embodiment, figure or description thereof. However, this disclosure method does not mean that the features required by the object of this application are more than the features mentioned in the claims. In fact, the features of the embodiments are less than all the features of the single embodiment disclosed above.

[0063] In some embodiments, numbers describing the number of components and attributes are used. It should be understood that such numbers used in the description of the embodiments are modified by the modifiers "about", "approximately" or "substantially" in some examples. Unless otherwise specified, "about", "approximately" or "substantially" indicate that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximate values, which may change according to the required features of individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and adopt the general method of retaining digits. Although the numerical domains and parameters used to confirm the breadth of their range in some embodiments of the present application are approximate values, in specific embodiments, the setting of such numerical values ​​is as accurate as possible within the feasible range.

[0064] Although the present application has been described with reference to the current specific embodiments, ordinary technicians in this technical field should recognize that the above embodiments are only used to illustrate the present application, and various equivalent changes or substitutions may be made without departing from the spirit of the present application. Therefore, as long as the changes and modifications to the above embodiments are within the essential spirit of the present application, they will fall within the scope of the claims of the present application.

Claims

1. A nuclear emergency personal dosimeter based on Beidou technology, characterized in that: include: A radiation detection processing module, comprising a radiation detector configured to detect nuclear radiation dose; as well as A wireless transmission module comprises a wireless transmission component and an antenna module, wherein the antenna module is configured to receive an output signal transmitted by the wireless transmission component, wherein: The wireless transmission component includes a ground communication module and a Beidou module, and the wireless transmission component is configured to communicate by relying on the ground communication module or the Beidou module; The Beidou module includes an RDSS communication module and an RNSS positioning module, and the output signal includes at least a first signal transmitted by the RDSS communication module; and The terrestrial communication module includes a 5G module, and the output signal includes at least a third signal transmitted by the 5G module.

2. The nuclear emergency personal dosimeter according to claim 1, characterized in that: The ground communication module further includes a Wi-Fi module and a Bluetooth module, and the output signal further includes a fourth signal transmitted by the Wi-Fi module and a fifth signal transmitted by the Bluetooth module.

3. The nuclear emergency personal dosimeter according to claim 2, characterized in that: The wireless transmission module also includes a multiplexer, and the RDSS communication module, the RNSS positioning module, the 5G module, the Wi-Fi module and the Bluetooth module exchange signals with the antenna module through the multiplexer.

4. The nuclear emergency personal dosimeter according to claim 1, characterized in that: The RDSS communication module includes an RDSS radio frequency module and an RDSS baseband processor, and the RNSS positioning module includes an RNSS radio frequency module and an RNSS baseband processor, wherein: The RDSS baseband processor is used to receive and process the signal processed by the RDSS RF module and send a signal to the RDSS RF module. The RDSS RF module is used to receive the first input signal returned by the antenna module and filter and amplify the first input signal. The RDSS RF module is also used to send the output signal modulated by the RDSS baseband processor to the antenna module. The RNSS baseband processor is used to process the signal sent by the RNSS radio frequency module, and the RNSS radio frequency module is used to receive the second input signal returned by the antenna module and filter and amplify the second input signal.

5. The nuclear emergency personal dosimeter according to claim 1, characterized in that: It also includes a power supply module configured to supply power to the radiation detection processing module and the wireless transmission module with a supply voltage.

6. The nuclear emergency personal dosimeter according to claim 5, characterized in that: The radiation detection processing module also includes a voltage conversion module, which is connected between the radiation detector and the power module, and is configured to convert the supply voltage of the power module into an operating voltage suitable for the radiation detector.

7. The nuclear emergency personal dosimeter according to claim 6, characterized in that: The power supply module includes a lithium battery module, a wireless charging module and a power management module, and the radiation detection processing module also includes a status indication unit, wherein the input end of the power management module is connected to the lithium battery module and the wireless charging module, and the output end of the power management module is respectively connected to the voltage conversion module, the status indication unit and the wireless transmission component.

8. The nuclear emergency personal dosimeter according to claim 7, characterized in that: The radiation detection processing module also includes an embedded management module MCU and a data storage module, a key module, an OLED data display module, an infrared communication module and a nuclear electronics module interconnected with the embedded management module MCU, wherein the nuclear electronics module is configured to collect and amplify the charge signal detected by the radiation detector.

9. The nuclear emergency personal dosimeter according to claim 8, characterized in that: The embedded management module MCU includes an STC32G single-chip microcomputer, and the core electronics module is a charge-sensitive preamplifier ASIC module.

10. The nuclear emergency personal dosimeter according to any one of claims 1 to 9, characterized in that: The nuclear emergency personal dosimeter is configured to transmit accident information to the nuclear emergency center through the RDSS communication module or the 5G module, and the accident information includes dose rate information and / or positioning information.

11. A nuclear emergency radiation monitoring system based on Beidou technology, characterized in that: include: Nuclear Emergency Centre; as well as The nuclear emergency personal dosimeter based on BeiDou technology as claimed in any one of claims 1 to 10, wherein the nuclear emergency personal dosimeter is configured to transmit accident information to the nuclear emergency center through an RDSS communication module or a 5G module in an off-site nuclear emergency state.

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