KR102665536B1 - Real-time Personal Exposure Dose Monitoring System - Google Patents

Abstract

The real-time personal radiation dose monitoring system according to the present invention is comprised of a wearable device that can be worn, and includes at least one dosimeter that transmits radiation exposure information, which is information obtained by measuring the amount of radiation received by the wearer from an external radiation source, to the outside. and a monitoring server that is communicatively connected to the dosimeter and monitors the exposure dose of the wearer wearing the dosimeter in real time using the exposure dose information transmitted from the dosimeter.

Description

Real-time Personal Exposure Dose Monitoring System}

The present invention relates to a real-time personal radiation dose monitoring system. More specifically, the radiation exposure dose for radiation workers in the industrial or medical fields is monitored in real time and recorded for each individual, thereby enabling rapid and efficient personal radiation dose management. This is about a real-time personal radiation dose monitoring system that can significantly improve the safety of radiation workers.

In general, radiation exposure dose refers to the amount of radiation received by the human body when exposed to an external radiation source. If the radiation exposure dose is excessive, hair loss, reduction in white blood cells, DNA deformation, and skin necrosis may occur depending on the degree. It causes various side effects on the human body, including carcinogenesis.

Therefore, in each country, the individual radiation dose limit for workers handling radiation is managed below the legal standard (in Korea, less than 50 mSv cumulative per year, less than 100 mSv cumulative over 5 years). To this end, for workers working with radiation, It is mandatory to wear a personal radiation dosimeter while working.

Previously, such management of personal radiation exposure was mainly carried out for workers working in nuclear power plants, but recently, as the use of various radioactive isotopes has expanded in industrial, medical, and research fields, radiation workers in these fields have expanded. Personal radiation dose management is also being carried out.

For the measurement and management of such personal exposure doses, there are thermal dosimeters (TLD), film badges, and glass dosimeters (PLD) that are officially recognized by current laws and regulations. Details about these are given below [Document 1]. It is disclosed in [Document 3].

However, in the case of the above-mentioned legal dosimeter, it is an analog dosimeter that measures the accumulated radiation dose ex post facto using a separate reading device after the worker wears the dosimeter for a certain period of time, so the radiation exposure dose (numeric value) of radiation workers ) has the disadvantage of being impossible to check and manage in real time.

Therefore, the legal dosimeter according to the prior art does not immediately recognize even when the radiation exposure of radiation workers exceeds the standard value due to high-dose exposure or long-term exposure during work, so there is a problem in that it undermines the safety of workers.

[Document 1] Korean Registered Utility Model No. 20-0199854 (notified on August 4, 2000)

[Document 2] Korean Registered Utility Model No. 20-0199853 (notified on October 16, 2000)

[Document 3] Japanese Patent Publication No. 1993-052959 (published March 2, 1993)

The present invention is intended to solve the problems of the prior art as described above. The purpose of the present invention is to monitor the radiation exposure dose for radiation workers in the industrial or medical field in real time and record it for each individual, thereby quickly and efficiently The purpose is to provide a real-time personal radiation dose monitoring system that can significantly improve the safety of radiation workers through radiation dose management.

In order to achieve the above object, the real-time personal radiation dose monitoring system according to the present invention includes at least one dosimeter that transmits radiation exposure information, which is information obtained by measuring the wearer's radiation dose, to the outside, and is capable of communicating with the dosimeter. It is configured to include a monitoring server that is connected and monitors the radiation exposure dose of the wearer wearing the dosimeter in real time using the exposure dose information transmitted from the dosimeter, wherein the monitoring server is configured to store the accumulated radiation dose of the wearer in advance. When the exposure dose exceeds the allowable value, a cumulative radiation exposure exceedance alarm is generated in the corresponding dosimeter, and the dosimeter itself generates an instantaneous radiation exposure exceedance alarm when the measured radiation dose exceeds the preset instantaneous radiation exposure tolerance. do.

In addition, the dosimeter includes a radiation detection module that detects radiation and generates an electrical signal, a dose calculation module that calculates the radiation dose using the electrical signal and generates radiation exposure information including this, and transmits the radiation exposure information to the outside. It is configured to include a first communication module and an alarm generation module that generates an alarm to the wearer, and the monitoring server is a second communication module communicatively connected to the first communication module, and radiation exposure dose information received from the second communication module. A dose management DB module that stores the radiation exposure dose for each wearer using It is characterized by including a control module that transmits a control signal to generate an alarm when a wearer exceeds the allowable value to the dosimeter worn by the wearer.

In addition, the monitoring server further includes a dosimeter setting module that sets one of a single user mode in which only a predetermined wearer wears a dosimeter and a multi-user mode in which a plurality of wearers arbitrarily wear it, for each dosimeter, and the control module is When exposure dose information is received from a dosimeter set in user mode, it is determined whether wearer information to recognize the wearer of the relevant dosimeter has been entered. If not, the received radiation dose information is temporarily stored and a wearer information input request alert is issued. It is characterized by transmitting a control signal for generating to the corresponding dosimeter.

In addition, if the wearer information for the corresponding dosimeter is input after the control module generates the wearer information input request alarm, the radiation exposure dose included in the temporarily stored radiation exposure information is converted into the radiation exposure dose of the corresponding dosimeter wearer in the dose management DB module. It is characterized by storing it in .

In addition, the radiation detection module includes a scintillator that emits light by incident radiation, a housing that is open at one end and accommodates the scintillator therein, a substrate coupled to the open end of the housing, and the substrate. It is characterized in that it is configured to include a SiPM (Silicon Photomultiplier) element that is mounted on the inner side of and amplifies light emitted from one end of the scintillator facing the substrate and converts it into an electrical signal.

In addition, the radiation detection module includes an elastic support member interposed between the housing and the other end of the scintillator to support the scintillator in the direction of the SiPM element, and an elastic support member interposed between one end of the scintillator and the SiPM element to support the scintillator and the SiPM element. It is characterized in that it further includes a light guiding adhesion member that maintains airtightness between the two.

In addition, the scintillator is formed in the shape of a rod or bar, and the radiation detection module further includes a light reflection member surrounding the outer peripheral surface of the scintillator.

In addition, at least one fastening pin is protruding from the inner surface of the substrate, and a fastening pin insertion hole into which the fastening pin of the coupled substrate is inserted is formed at the open end of the housing.

In addition, a pair of substrate clamps are further formed at the open end of the housing to clamp both ends of the coupled substrate.

Additionally, the dosimeter is characterized as being connected to enable communication with the monitoring server via Bluetooth communication.

The real-time personal exposure dose monitoring system according to the present invention is configured so that the dosimeter worn by the radiation worker measures the wearer's radiation dose in real time on site and transmits the results to the monitoring server, so that the radiation worker's radiation dose is measured in real time. It has the advantage of significantly improving the safety of radiation workers by quickly issuing an alarm for exceeding the cumulative radiation exposure to wearers whose cumulative radiation exposure exceeds the allowable level.

In addition, the real-time personal radiation exposure monitoring system according to the present invention is configured so that the monitoring server records the radiation exposure dose of radiation workers for each individual and manages it in a database, so the radiation exposure dose of radiation workers can be monitored hourly, daily, and as needed. It has the advantage of being able to be managed efficiently on a monthly, annual, etc. basis.

In addition, the real-time personal radiation exposure monitoring system according to the present invention is configured so that each dosimeter automatically generates an instantaneous radiation exposure exceedance alarm when the instantaneous radiation exposure dose exceeds a preset tolerance, so that radiation workers are exposed to their own cumulative radiation exposure. It has the advantage of making radiation safety management more certain for workers by being able to recognize in real time not only when the dose exceeds the allowable level, but also when the instantaneous radiation dose exceeds the allowable level due to high dose exposure, etc.

In addition, the real-time personal exposure dose monitoring system according to the present invention is configured so that the use mode of the dosimeter can be set to either a single user mode or a multi-user mode, so that a wearer wearing a dosimeter in multi-user mode can send his or her wearer information to the dosimeter. And/or, if it is not entered in advance through the monitoring server, it continuously generates an alarm to encourage the wearer to input the information, which has the advantage of preventing personal radiation dose management from being neglected due to the wearer's intention or carelessness. .

In addition, in the real-time personal exposure dose monitoring system according to the present invention, the connection between the scintillator and the SiPM element constituting the radiation detection module mounted on the dosimeter is achieved by the combination structure of the housing in which the scintillator is accommodated and the substrate on which the SiPM element is mounted. Because it is configured to be easily performed, it has the advantage of improving the convenience of the product assembly process and minimizing the defect rate.

In addition, the real-time personal exposure dose monitoring system according to the present invention includes an elastic support member interposed between the scintillator and the scintillator inside the housing of the radiation detection module, a light reflection member surrounding the outer peripheral surface of the scintillator, and between the scintillator and the SiPM element. There is an advantage in that the detection efficiency of the radiation detection module can be greatly improved by minimizing the light leakage that occurs in the process of transmitting the light generated from the scintillator to the SiPM element by the configuration of the light guiding adhesive member interposed therein.

1 is a diagram illustrating the overall configuration of a real-time personal radiation dose monitoring system according to an embodiment of the present invention;
Figure 2 is a block diagram illustrating the operation configuration of the dosimeter and monitoring server that constitute the real-time personal exposure dose monitoring system of Figure 1;
Figure 3 is a flowchart for explaining the operation control of the monitoring server that constitutes the real-time personal radiation dose monitoring system of Figure 1;
Figures 4 and 5 are perspective and exploded perspective views for explaining the configuration of the radiation detection module mounted on the dosimeter of Figure 1;
Figure 6 is a cross-sectional view of section AA of Figure 5;
Figures 7 and 8 are enlarged views of parts “A” and “B” of Figure 6, respectively;
Figure 9 is a cross-sectional view of portion BB of Figure 6, and
Figure 10 is an enlarged view of the "C" part of Figure 9.

Hereinafter, preferred embodiments of the present invention will be described in detail using the accompanying drawings.

First, Figure 1 is a diagram for explaining the overall configuration of a real-time personal radiation dose monitoring system according to an embodiment of the present invention, and Figure 2 shows the operation of the dosimeter and monitoring server that constitute the real-time personal radiation dose monitoring system of Figure 1. It is a block diagram to explain the configuration, and Figure 3 is a flowchart to explain the operation control of the monitoring server that constitutes the real-time personal radiation dose monitoring system of Figure 1.

The real-time personal exposure dose monitoring system according to the present invention includes at least one dosimeter 100 that measures the amount of radiation received by the wearer (i.e., radiation worker) from an external radiation source (not shown), and a communication network 300. It is configured to include a monitoring server 200 that is communicatively connected to the dosimeter 100.

At this time, the radiation workers may be workers in industrial fields such as nuclear power plants, the medical field that deals with X-ray devices, or the research field that deals with radioactive isotopes. In this embodiment, the radiation workers are doctors, nurses, The case of people working in radiation work in the medical field, such as X-ray radiographers, is explained as an example.

The dosimeter 100 is preferably made in the form of a wearable device that can be worn on any part of the body so that the wearer can easily carry it. In this embodiment, as an example, the dosimeter 100 is configured with a card 100a, a pen ( 100b), a band or watch (100c), and a neck band (100d).

In addition, the dosimeter 100 is configured to transmit “radiation dose information”, which is information obtained by measuring the amount of radiation introduced from the outside in real time, to the outside (monitoring server in this embodiment). In this case, the “radiation dose information” is obtained by measuring the amount of radiation introduced from the outside in real time. As an example, “information” may be information including the identification code of the relevant dosimeter (and/or the identification code of the relevant dosimeter wearer), measurement time, measurement location, instantaneous radiation dose, etc.

For this purpose, the dosimeter 100 includes a radiation detection module 110 that detects radiation and generates an electrical signal, and a dose calculation module 140 that calculates the exposure dose using the electrical signal and generates the exposure dose information including this. ), and may be configured to include a first communication module 160 that transmits the exposure dose information to the outside.

At this time, the radiation detection module 110 is one of known radiation detectors (proportional coefficient tube, GM tube, semiconductor detector, scintillation detector, etc.) that detects radiation using current or light generated by the ionization or excitation of radiation. It can be preferably implemented by any one, and in this embodiment, as an example, the radiation detection module 110 is configured as a scintillation detector, as will be described later.

In addition, the dose calculation module 140 calculates the radiation dose (i.e., the instantaneous exposure dose) by using the number of pulses of the electrical signal generated by the radiation detection module 110 for a preset time (i.e., pulse count value). ) is calculated, and since the specific details are known technology, detailed description thereof will be omitted.

In addition, the first communication module 160 can be connected to enable communication with the second communication module 240, which will be described later, by a wired or wireless communication network 300. For the convenience of the dosimeter wearer, the communication network 300 is wireless. It is preferable that it be done through a communication network.

In this case, the first communication module 160 and the second communication module 240 may be configured to communicate using any one of known wireless communication methods (Wi-Fi, Bluetooth, LoRA, Zigbee, etc.). In the embodiment, the Bluetooth communication method is used as an example.

In the case of the Bluetooth communication, not only does it consume relatively little power and have a good data transmission rate, but it also has the advantage of being able to connect multiple devices to one device without interference with other wireless devices. Therefore, the real-time personal radiation dose monitoring system according to the present invention and Likewise, it is suitable for connecting multiple dosimeters 100 to the monitoring server 200.

In addition, the dosimeter 100 includes an alarm generation module 150 that generates an alarm about radiation exposure dose according to a control signal from the monitoring server 200, which will be described later, the radiation detection module 110, a dose calculation module 140, An alarm generation module 150, a first control module 130 that controls the operation of the first communication module 160, and a first power supply module 120 that supplies power required for the operation of each module described above are further included. It can be configured to include.

In this embodiment, the case where the first control module 130 and the dose calculation module 140 are composed of separate modules is described as an example, but the case is not limited to this, and the first control module 130 and dose calculation are performed as necessary. Module 140 may be composed of one module.

In addition, the first power supply module 120 can be preferably implemented with a normal battery, etc., and the alarm generating module 150 generates an alarm related to radiation exposure dose or information input request to the wearer in an emergency, as described later. This can be preferably implemented using ordinary speakers, lamps, or display devices.

In addition, the monitoring server 200 is connected to each dosimeter 100 to enable communication, and uses the exposure dose information transmitted from the dosimeter 100 to measure the exposure dose of the wearer wearing the corresponding dosimeter 100 in real time. It performs a monitoring function.

For this purpose, the monitoring server 200 includes an input/output module 210 for inputting and outputting information, a second communication module 240 communicatively connected to the first communication module 160, and the second communication module 240. The dose management DB module 260 stores the exposure dose for each wearer of each dosimeter using the exposure dose information received from It may be configured to include a dose determination module 250 that determines whether the dose is exceeded.

In addition, the monitoring server 200 includes a second control module 230 that controls the operations of the input/output module 210, the second communication module 240, the dose management DB module 260, and the dose determination module 250. , and a second power supply module 220 that supplies power required for the operation of each module described above.

Additionally, the input/output module 210 may be preferably implemented using a keypad, buttons, display device, etc., and the second power supply module 220 may be preferably implemented using a normal battery or external power supply device. You can.

In the case of this embodiment, as an example, the monitoring server 200 is configured in the form of a tablet PC, so that the input/output module 210 is made of a touch panel that forms the screen of the tablet PC. In this case, the administrator or the dosimeter wearer is the input/output module. You can enter or confirm necessary information through (210).

In addition, the dose determination module 250 determines whether the cumulative radiation exposure dose during a predetermined period (e.g., hourly, daily, monthly, or yearly) exceeds the preset cumulative radiation exposure tolerance value, or, if necessary, In addition to the cumulative exposure dose, it is also possible to determine whether the instantaneous maximum value of the exposure dose or the maximum value during a predetermined sampling time (i.e., instantaneous exposure dose) exceeds the predetermined instantaneous exposure dose tolerance.

In addition, in this embodiment, the case where the second control module 230 and the dose determination module 250 are composed of separate modules is described as an example, but the case is not limited to this, and the second control module 230 is used as necessary. The over dose determination module 250 may be composed of one module.

In addition, the second control module 230 of the monitoring server 230 sends a control signal to generate an alarm for exceeding the cumulative radiation dose when there is a wearer whose cumulative radiation dose exceeds the allowable value as a result of the determination of the dose judgment module 250. It is transmitted to the corresponding dosimeter 100, and the corresponding dosimeter 100, which receives this, generates an alarm for exceeding the cumulative radiation exposure dose through the alarm generation module 150, so that the wearer can recognize the risk and take appropriate safety measures.

In this embodiment, as an example, the second control module 230 determines whether the cumulative radiation exposure dose for each wearer exceeds a preset cumulative radiation exposure tolerance value through the dose judgment module 250, and the dose judgment module 250 As a result of the determination, if there is a wearer whose cumulative radiation exposure dose exceeds the allowable value, the second control module 230 is configured to generate an alarm of exceeding the cumulative radiation exposure dose in the corresponding dosimeter.

In addition, the real-time personal radiation dose monitoring system according to the present invention automatically alerts the dosimeter 100 to exceed the instantaneous radiation dose when the instantaneous radiation dose (i.e., the radiation dose measured in real time) exceeds the preset instantaneous radiation exposure tolerance value. It is configured to generate.

For this purpose, the first control module 130, as an example, if the radiation exposure calculated by the dose calculation module 140 exceeds the preset instantaneous radiation exposure tolerance, the first control module 130 automatically calculates the instantaneous radiation exposure through the alarm generation module 150. An overload alarm is generated.

The real-time personal exposure dose monitoring system according to the present invention configured as described above allows the dosimeter 100 worn by radiation workers to measure the wearer's exposure dose in real time on site and transmit the results to the monitoring server 200. Because it is configured, it has the advantage of significantly improving the safety of radiation workers by monitoring the exposure dose of radiation workers in real time and quickly issuing an alarm for exceeding the cumulative radiation exposure to wearers whose cumulative radiation exposure exceeds the allowable level. .

In addition, the real-time personal radiation exposure monitoring system according to the present invention is configured so that the monitoring server 200 records the radiation exposure dose of radiation workers for each individual and manages it in a database, so the radiation exposure dose of radiation workers can be monitored over time as needed. , it has the advantage of being able to be managed efficiently on a daily, monthly, or annual basis.

In addition, the real-time personal radiation exposure monitoring system according to the present invention is configured so that each dosimeter automatically generates an instantaneous radiation exposure exceedance alarm when the instantaneous radiation exposure dose exceeds a preset tolerance, so that radiation workers are exposed to their own cumulative radiation exposure. It has the advantage of making radiation safety management more certain for workers by being able to recognize in real time not only when the dose exceeds the allowable level, but also when the instantaneous radiation dose exceeds the allowable level due to high dose exposure, etc.

On the other hand, in cases where all workers in an industrial facility are exposed to a radiation environment, such as a nuclear power plant, it is common for each worker to wear their own dosimeter, but in cases where only a portion of all employees are exposed to a radiation environment depending on the work, such as in a hospital, only a portion of the workers are exposed to a radiation environment. Dosimeters are used arbitrarily by multiple workers.

In this case, before the worker wears the dosimeter, the wearer's information (i.e., employee number, ID) for the dosimeter is provided through an input means (not shown) installed on the dosimeter 100 or the input/output module 210 installed on the monitoring server 200. There is no problem if the wearer identification code (e.g., wearer identification code) is entered, but if the wearer does not enter his or her wearer information intentionally or carelessly, a problem may arise in which the individual worker's radiation exposure dose is not managed properly. .

In the case of the present invention, in order to solve this problem, the monitoring server 200 has one of a single user mode in which only a predetermined wearer wears each dosimeter 100 and a multi-user mode in which a plurality of wearers wear it at random. It may be configured to further include a dosimeter setting module 215 that sets the use mode.

At this time, information about the use mode of the dosimeter 100 may be obtained from an input means (not shown) that may consist of a touch panel, input button, toggle switch, card reader, etc. installed on the dosimeter 100 or from the monitoring server 200. It can be input through the input/output module 210, and it is preferable that the input of information about the use mode is performed at the initial stage (i.e., communication pairing stage) of communicatively connecting the dosimeter 100 to the monitoring server 200. do.

In this way, when information about the use mode of the dosimeter 100 is input, the dosimeter setting module 215 sets the dosimeter 100 to either a single user mode or a multi-user mode. In the case of the single user mode, It can be configured to input the wearer information when setting the mode, and of course, the use mode can be changed through an input procedure later as needed.

Using Figure 3, we will examine in detail the operation control of the monitoring server 200 according to the use mode of the dosimeter 100 described above.

First, when receiving exposure dose information from an arbitrary dosimeter (S10), the second control module 230 determines whether the corresponding dosimeter 100 is a dosimeter set in single-user mode or a dosimeter set in multi-user mode. (S20).

As a result of the determination in step S20, if it is a dosimeter in single user mode, the second control module 230 determines the exposure dose of the wearer of the corresponding dosimeter 100, which is predetermined (or pre-entered when setting the use mode) according to the method described above. It is stored in the dose management DB module 260 (S40).

Meanwhile, as a result of the determination in step S20, if the corresponding dosimeter 100 is a multi-user mode dosimeter, the second control module 230 determines whether wearer information for recognizing the wearer for the corresponding dosimeter has been input in advance. And (S30), if the wearer information is input as a result of the determination in step S30, the radiation dose of the wearer of the corresponding dosimeter 100 is stored in the dose management DB module 260 (S40).

At this time, the wearer's information for the dosimeter set in the multi-user mode can be input by the wearer when wearing the sun cooling meter through the input means (not shown) installed on the dosimeter 100 or the input/output module 210 of the monitoring server 200. This can be done by entering identification information.

On the other hand, if, as a result of the determination in step S30, the wearer information for the corresponding dosimeter 100 is not input due to the wearer's intention or carelessness, the second control module 230 stores the received radiation dose information temporarily in memory, etc. A control signal for storing and generating a wearer information input request alarm is transmitted to the corresponding dosimeter 100 (S32, S34).

In addition, the second control module 230 repeatedly performs step S10 after performing steps S32 and S34, thereby continuously receiving and storing radiation exposure information even while wearer information is not input.

In addition, the second control module 230 records the exposure dose of the wearer of the dosimeter 100 in the dose management database when the wearer information for the corresponding dosimeter 100 is entered post-event after generating the wearer information input request alarm. It is stored in the module 260 (S40). At this time, the radiation exposure dose included in the temporarily stored radiation exposure information is stored as the radiation exposure dose of the corresponding dosimeter wearer according to the time order in which the information was received.

In addition, when step S40 is completed, the second control module 230 determines whether the cumulative radiation dose exceeds the allowable value for each wearer as described above (S50), and issues an alarm for exceeding the cumulative radiation dose to the wearer whose cumulative radiation dose exceeds the allowable value. It is generated (S60).

As such, the real-time personal exposure dose monitoring system according to the present invention is configured to set the use mode of the dosimeter to either single user mode or multi-user mode, so that the wearer wearing the dosimeter in multi-user mode can record his or her wearer information. If it is not entered in advance through the dosimeter and/or monitoring server, an alarm is continuously generated to encourage the wearer to input the information, which has the advantage of preventing personal radiation dose management from being neglected due to the wearer's intention or carelessness. there is.

Meanwhile, in this embodiment, as described above, the radiation detection module 110 is composed of a scintillation detector, the specific configuration of which is shown in Figures 4 to 10.

Figures 4 and 5 are perspective and exploded perspective views for explaining the configuration of the radiation detection module mounted on the dosimeter of Figure 1, and Figure 6 is a cross-sectional view of portion A-A of Figure 5.

In addition, Figures 7 and 8 are enlarged views of parts “A” and “B” of Figure 6, respectively, Figure 9 is a cross-sectional view of part B-B of Figure 6, and Figure 10 is part “C” of Figure 9. This is an enlarged view of .

The radiation detection module 110 according to this embodiment includes a scintillator 112, a housing 111 with one end open and the scintillator 112 accommodated therein, and an open end of the housing 111. It is configured to include a substrate 114 that is detachably coupled to.

At this time, the scintillator 112 is composed of a material that emits light in the visible light wavelength range as electrons excited by the energy of the incident radiation transition to the ground state, which is known as an inorganic crystal scintillation material or an organic scintillator material. It can be composed of one.

However, since the radiation detection characteristics of each scintillation material are different from each other, the scintillator 112 is selected as an appropriate scintillation material depending on the type of radiation to be detected (i.e., the type of radiation emitted in the wearer's work environment). desirable.

In addition, the scintillator 112 may be formed in a panel shape or a polyhedral shape as needed, but in this embodiment, as an example, it is formed in a rod shape or bar shape to facilitate installation inside the dosimeter 100. did.

In addition, the housing 111 has a cylindrical shape in which the scintillator 112 is accommodated and one end is open. As in the present embodiment, when the scintillator 112 is formed in a rod shape, the housing 111 has a length It is made up of a long cylinder shape (cylinder or square cylinder).

In addition, the housing 111 is preferably made of a material that allows radiation to pass through without shielding it in order to improve radiation detection efficiency. For example, it may be made of a plastic material such as PP, PVC, PET, or PS.

In addition, the substrate 114 is coupled to the open end of the housing 111 by a fastening member 118 formed on the housing 111, which will be described later. Specifically, the substrate 114 is connected to the open end of the housing 111. It can be preferably implemented as a regular PCB panel with a shape corresponding to the end (i.e., square in this embodiment).

In addition, a SiPM (Silicon Photomultiplier) element 115 is mounted on the inner surface of the substrate 114 to amplify the light emitted from the scintillator 112 and converts it into an electrical signal. The SiPM element 115 is housed in a housing ( When the substrate 114 is coupled to 111, the end of the scintillator 112 facing the inner surface of the substrate 114 is contacted, thereby receiving light emitted from the scintillator 112 and converting it into an electrical signal.

In addition, at least one fastening pin 117 is formed to protrude on the inner surface of the substrate 114 for coupling with the housing 111. In this embodiment, as an example, the fastening pins 117 are composed of three. did.

In addition, a plurality of terminal pins 116 that are coupled to the external terminal connector C are protruding from the outer surface of the substrate 114, and the terminal pins 116 function as power supply and signal input/output terminals, respectively. do.

Meanwhile, as described above, a fastening member 118 is formed at the open end of the housing 111 for coupling to the substrate 114. In this embodiment, the fastening member 118 is an example of the coupled substrate. It consists of a pair of substrate clamps 118b that clamp both ends of the substrate 114 coupled to the fastening pin insertion hole 118a into which some of the fastening pins 117 of 114 are inserted.

By the above configuration, the substrate 114 is first coupled to the housing 111 with some of the fastening pins 117 inserted into the fastening pin insertion hole 118a, and is clamped by a pair of substrate clamps 118b. The ends can be firmly coupled to the housing 111 by clamping both ends of the outer surface of the substrate 114.

Therefore, the radiation detection module 110 according to the present invention is a housing 111 containing the scintillator 112 therein and a substrate 114 on which the SiPM element 115 is mounted. Since the connection between the and SiPM elements 115 is made naturally, there is an advantage in improving the convenience of the product assembly process and minimizing the defect rate.

In particular, the radiation detection module 110 according to the present invention is configured so that the substrate 114 is first coupled to the housing 111 while some of the fastening pins 117 are inserted into the fastening pin insertion hole 118a, so it is easy to assemble. By preventing mistakes such as misorientation of the substrate 114 during processing, the defect rate in product production can be minimized.

On the other hand, in the radiation detection module 110 combined as described above, if the scintillator 112 and the SiPM element 115 are not perfectly close inside the housing 111, the light generated from the scintillator 112 is transmitted to the SiPM element ( 115), some of the radiation may leak during the delivery process, which may cause problems such as reducing the detection efficiency of radiation.

In order to solve this problem, the semiconductor detection module 110 according to the present invention uses SiPM at one end of the scintillator 112 (i.e., the end facing the substrate inside the housing) from which the light generated by the incident radiation is emitted. It is configured to further include light leak prevention members 115a and 119 that are placed in close contact with the element 115 to prevent light emitted from the scintillator 112 from leaking.

In this embodiment, the light leakage prevention members 115a and 119 include an elastic support member 119 interposed between the housing 111 and the other end of the scintillator 112 (i.e., the end opposite to the closed end of the housing), and , It consists of a light guiding adhesive member 115a interposed between one end of the scintillator 112 and the SiPM element 115.

The elastic support member 119 has one end in contact with the inner surface of the housing 111 and the other end in contact with the other end of the scintillator 112 (i.e., the end opposite to the closed end of the housing), thereby forming the scintillator 112. It performs the function of supporting while pushing in the direction of the SiPM element 115, and can be preferably implemented using a normal spring.

At this time, a fixing protrusion 111a for fixing the elastic support member 119 may be formed on the inner surface of the housing 111.

In addition, the light guiding adhesive member 115a functions to maintain airtightness by filling the minute gap between one end of the scintillator 112 and the SiPM element 115, and is responsible for deformation and light loss depending on the shape of the gap. It is preferable that it is made of a material with excellent fluidity and light guiding properties to facilitate passage.

To this end, in this embodiment, the light guide adhesion member 115a was constructed as an example of a transparent colored liquid lubricant (grease) with relatively high viscosity and low volatility.

In addition, the semiconductor detection module 110 according to the present invention is configured to further include a light reflection member 113 surrounding the outer peripheral surface of the scintillator 112 in order to further reduce the loss of light generated from the scintillator 112. The light reflection member 113 may be preferably constructed using a synthetic resin film with a low light transmittance.

Therefore, the semiconductor detection module 110 according to the present invention minimizes the leakage of light generated from the scintillator 112 by radiation by the configuration of the light leakage prevention members 115a and 119 and the light reflection member 113 described above. It has the advantage of greatly improving the detection efficiency of radiation.

100: Dosimeter 200: Monitoring Server
110: Radiation detection module 111: Housing
112: scintillator 113: light reflection member
114: substrate 115: SiPM device
115a: Light guiding adhesion member 117: Fastening pin
118: fastening member 119: elastic support member

Claims (10)

At least one dosimeter that transmits radiation exposure information, which is information obtained by measuring the wearer's radiation exposure dose, to the outside; and
It is communicatively connected to the dosimeter and monitors the exposure dose of the wearer wearing the dosimeter in real time using the exposure dose information transmitted from the dosimeter, and monitors the wearer's cumulative radiation dose in real time when the wearer's cumulative radiation dose exceeds the preset cumulative radiation dose tolerance. In this case, the dosimeter is configured to include a monitoring server that generates an alarm for exceeding the cumulative exposure dose.
The monitoring server is,
For each dosimeter, a dosimeter setting module that sets one of the use modes between a single user mode in which only predetermined wearers wear it and a multi-user mode in which multiple wearers arbitrarily wear it, and a dosimeter setting module that sets a use mode for each dosimeter, and a dosimeter setting module that sets a use mode for each dosimeter, and a dosimeter setting module that sets a use mode for each dosimeter, and a dosimeter setting module that sets a use mode for each dosimeter, and a wearer whose cumulative radiation exposure exceeds the allowable limit is provided. If present, it includes a control module that transmits a control signal to generate an alarm to the dosimeter worn by the wearer,
When radiation exposure information is received from a dosimeter set to the multi-user mode, the control module determines whether wearer information for recognizing the wearer of the corresponding dosimeter has been entered. If not, the received radiation exposure information is temporary. A real-time personal radiation dose monitoring system characterized by storing and transmitting a control signal to the corresponding dosimeter to generate an alarm requesting input of wearer information. In paragraph 1:
The control module is characterized in that, when the wearer information for the corresponding dosimeter is input after generating the wearer information input request alarm, the radiation exposure dose included in the temporarily stored radiation exposure information is stored as the radiation exposure dose of the corresponding dosimeter wearer. Real-time personal radiation dose monitoring system. In paragraph 2,
The dosimeter is a real-time personal radiation dose monitoring system characterized in that it automatically generates an instantaneous radiation dose exceedance alarm when the measured radiation dose exceeds a preset instantaneous radiation dose allowance. In paragraph 3,
The dosimeter includes a radiation detection module that detects radiation and generates an electrical signal, a dose calculation module that calculates the exposure dose using the electrical signal and generates exposure dose information including this, and transmits the exposure dose information to the outside. It is comprised of a first communication module and an alarm generation module that generates an alarm to the wearer,
The monitoring server includes a second communication module communicatively connected to the first communication module, a dose management DB module that stores the radiation dose for each wearer using the radiation dose information received from the second communication module, and the dose management DB module. A real-time personal radiation exposure monitoring system further comprising a dose determination module that determines whether the accumulated radiation dose for each wearer stored in exceeds a preset cumulative radiation dose tolerance. In paragraph 4,
The radiation detection module,
A scintillator that emits light by incident radiation, a housing that is open at one end and accommodates the scintillator therein, a substrate coupled to the open end of the housing, and a substrate mounted on the inner surface of the substrate and A real-time personal radiation dose monitoring system comprising a SiPM (Silicon Photomultiplier) element that amplifies light emitted from one end of the opposing scintillator and converts it into an electrical signal. In paragraph 5,
The radiation detection module,
An elastic support member interposed between the housing and the other end of the scintillator to support the scintillator in the direction of the SiPM element, and a light guiding member interposed between one end of the scintillator and the SiPM element to maintain airtightness between the scintillator and the SiPM element. A real-time personal radiation dose monitoring system further comprising an adhesion member. In paragraph 6:
The scintillator is made of a rod or bar shape,
A real-time personal radiation exposure monitoring system, wherein the radiation detection module further includes a light reflection member surrounding the outer peripheral surface of the scintillator. In any one of paragraphs 5 to 7,
At least one fastening pin is protruding from the inner surface of the substrate,
A real-time personal radiation dose monitoring system, characterized in that a fastening pin insertion hole into which the fastening pin of the coupled substrate is inserted is formed at the open end of the housing. In paragraph 8:
A real-time personal radiation exposure monitoring system, characterized in that a pair of substrate clamps are further formed at the open end of the housing to clamp both ends of the coupled substrate. In any one of paragraphs 5 to 7,
A real-time personal radiation dose monitoring system, characterized in that the dosimeter is connected to communicate with the monitoring server via Bluetooth communication.