KR102189883B1 - Radiation dose monitoring system using betavoltaic battery - Google Patents

Abstract

The present invention relates to a technique which measures a radiation level while sufficient power is secured from a betavoltaic battery to wirelessly transmit accurate radiation level information measured in prescribed time units to the outside of a radiation area, and generates and outputs a radiation monitoring screen to easily recognize a spatiotemporal current radiation level and a momentary change state of a radiation level based on wirelessly received radiation level information outside the radiation area. According to the present invention, a radiation level monitoring system using a betavoltaic battery comprises: one or more transmission devices which use charging power of a betavoltaic battery to operate, measure a radiation level every one hour to wirelessly transmit radiation information including the radiation level and a corresponding identification code, and are arranged at different positions; and a reception device to show radiation information received from the transmission devices on a radiation area map where the transmission devices are installed to output the radiation information, display a reference color corresponding to a current radiation level at a corresponding position based on each transmission device identification code, and provide a radiation spike screen for displaying and outputting a spike value calculated by using a radiation distribution screen for reducing a radiation level in a prescribed radius unit around the corresponding reference color by a prescribed ratio to display and output the radiation level in a color corresponding to the reduced radiation level, a current radiation level for each radiation measurement position, and a deviation between the current radiation level and a radiation level in one-hour unit during previous six hours in each hour unit. The spike value is calculated by a preset equation.

Description

Radiation dose monitoring system using betavoltaic battery}

The present invention measures the radiation dose while securing sufficient power from the beta battery and wirelessly transmits accurate radiation dose information measured in a certain time unit to the outside of the radiation zone, and based on the radio received radiation dose information outside the radiation zone. The present invention relates to a technology for generating and outputting a radiation monitoring screen capable of easily recognizing a current state of radiation dose in time and space and an instantaneous change state of radiation dose.

In general, radiation is used in various fields such as disease treatment, diagnosis, stability inspection of construction machinery, development of agricultural products, and long-term preservation, and its scope of use is expanding in nuclear power plants, medical institutions, and non-destructive testing companies. .

Natural radiation does not affect the human body much, but since industrial or medical radionuclides can seriously affect the human body depending on the amount of radiation, it is necessary to monitor dangerous areas.

Meanwhile, a nuclear power plant is a representative place in Korea that currently uses a radiation detector, and it detects and monitors the radiation dose for major inspection points inside the power plant in real time.

In general, such a radiation monitoring system has a transmission device installed in a radiation area, and an external receiving device is configured to collect radiation information from a transmission device and display the contamination status of the area.

At this time, the receiving device is operated to display the current state value indicated for each measurement point, and display an alarm message on the screen when the measured radiation dose exceeds a predetermined set value to indicate the level of contamination in the corresponding area.

Accordingly, in the conventional radiation monitoring system, it is basically assumed that an accurate radiation measurement value is obtained from a transmission device.

However, in an actual situation, an instantaneous malfunction of the transmission device or an instantaneous signal change occurs due to external disturbances, and the conventional radiation monitoring system outputs an alarm message depending only on the current radiation measurement value even in such a situation. And, the manager will follow up accordingly. That is, a problem of unnecessary follow-up actions may occur due to a temporary malfunction.

In addition, the transmission device is generally configured to receive the driving power of the transmission device using a beta battery. If the charge amount of the beta battery is insufficient, the radiation measurement sensor may not operate normally and an abnormality may occur in the measured radiation value. Even in such a situation, an alarm message may be output from the receiving device.

Therefore, it is essential to obtain more accurate radiation measurement values for reliable monitoring of the radiation area.

1. Korean Patent Application Publication No. 10-2016-0147577 (Name: Radiation Monitoring Device)

Accordingly, the present invention was created in consideration of the above circumstances, and radioactively transmits accurate radiation dose information to the outside of the radiation zone by measuring the radiation dose in a state where sufficient driving power is securely secured from the beta battery. Outside the area, radiation dose monitoring using a beta battery that generates radiation monitoring information that can easily recognize the current state of spatio-temporal radiation dose and instantaneous fluctuations of radiation dose based on the radiation dose information received wirelessly. The technical purpose is to provide a system.

여기서, spike out 는 스파이크값이고, rR 은 현재 시간의 방사선량, Rz _1h 는 1시간 전 방사선량, Rz _2h 는 현재 시간 방사선량과 2시간 이전 방사선량간의 편차, Rz _3h 는 현재 시간 방사선량과 3시간 이전 방사선량간의 편차, …, Rz _6h 는 현재 시간 방사선량과 6시간 이전 방사선량간의 편차임.According to one aspect of the present invention for achieving the above object, different types of radioactive devices that operate using the charging power of the beta battery and measure the radiation dose every hour to wirelessly transmit radiation information including the radiation dose and the corresponding identification code. At least one transmitting device disposed at the location and the radiation information received from the transmitting device are expressed and output on the radiation zone map in which the transmitting devices are installed, but based on the identification code of each transmitting device, the current radiation dose corresponding to the location A radiation distribution screen that displays a reference color and displays a color corresponding to the reduced radiation dose by reducing the radiation dose in a certain radius unit based on the reference color, and the current radiation dose for each radiation measurement location. , Including a receiving device that provides a radiation spike screen that displays and outputs the spike value calculated by using the radiation dose 1 hour before and the deviation between the current radiation dose and the radiation dose by 1 hour unit for the previous 6 hours. A radiation dose monitoring system using a beta battery is provided, wherein the spike value is calculated by the following equation.

Here, spike out is the spike value, rR is the radiation dose at the current time, Rz _1h is the radiation dose 1 hour ago, Rz _2h is the deviation between the current time radiation dose and the radiation dose 2 hours ago, and Rz _3h is the current time radiation dose and Deviation between radiation doses 3 hours ago,… , Rz _6h is the deviation between the current dose and the previous dose of 6 hours.

In addition, the radiation spike screen is configured to provide a maximum spike table including the radiation measurement position information and the radiation amount of the maximum and second maximum current radiation amount within the radiation area. The system is provided.

In addition, the transmitting device is equipped with a nickel-63-based beta battery, generating radiation information to satisfy a condition having a driving time within 350msec with a 3V DC voltage, 500mA or more, and transmitting it wirelessly to the receiving device. A radiation dose monitoring system using a beta battery is provided.

In addition, the transmitting device is configured not to wirelessly transmit radiation information to the receiving device when an abnormality occurs in operation, and the receiving device stores the radiation information received from the transmitting device in a data memory. There is provided a radiation dose monitoring system using a beta battery, characterized in that the spike screen information is generated only when the radiation information for radiation is continuously stored.

In addition, when the current radiation dose exceeds a preset reference radiation dose, the receiving device analyzes the spike value fluctuation history of the previous time from the radiation spike information, and adds a warning message to the radiation monitoring screen when the spike value pattern is a rising pattern. There is provided a radiation dose monitoring system using a beta battery, characterized in that the display and output as.

According to the present invention, the radiation dose is accurately measured and wirelessly transmitted to the outside in a predetermined time unit while sufficient power is secured from the beta battery, and the current radiation state as well as the radiation dose deviation using accurate radiation measurement information in the receiving device. By providing a screen based on the amount of radiation change during the previous predetermined period of time, the administrator can easily recognize the radiation dose status for the radiation area.

1 is a diagram showing a schematic configuration of a radiation dose monitoring system using a beta battery according to a first embodiment of the present invention.
FIG. 2 is a block diagram showing a functionally separated internal configuration of the transmission apparatus 100 shown in FIG. 1;
FIG. 3 is a block diagram showing a functionally separated internal configuration of the receiving apparatus 200 shown in FIG. 1;
FIG. 4 is a diagram illustrating a radiation distribution screen output through the information input/output unit 220 shown in FIG. 3.
5 is a diagram for explaining a radiation spike screen output through the information input/output unit 220 shown in FIG. 3;
6 is a view for explaining the operation of the radiation dose monitoring system using a beta battery according to the present invention.

Since the embodiments described in the present invention and the configurations shown in the drawings are only preferred embodiments of the present invention, and do not represent all the technical spirit of the present invention, the scope of the present invention is limited to the embodiments and drawings described in the text. Should not be construed as limited by That is, since the embodiments can be variously changed and have various forms, the scope of the present invention should be understood to include equivalents capable of realizing the technical idea. In addition, since the object or effect presented in the present invention does not mean that a specific embodiment should include all of them or only those effects, the scope of the present invention should not be understood as being limited thereto.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the field to which the present invention belongs, unless otherwise defined. Terms defined in a commonly used dictionary should be construed as having the meaning of the related technology in context, and cannot be interpreted as having an ideal or excessively formal meaning that is not clearly defined in the present invention.

1 is a diagram showing a schematic configuration of a radiation dose monitoring system using a beta battery according to a first embodiment of the present invention.

Referring to FIG. 1, a radiation dose monitoring system using a beta battery according to the present invention includes a plurality of transmitting devices 100 for converting and transmitting radiation information detected in a radiation area into a wireless signal, and a plurality of transmitting devices 100. It includes a receiving device 200 for generating and outputting a radiation monitoring screen based on the radiation information wirelessly transmitted from

At this time, the receiving device 200 generates a receiving processing unit 210 that transmits radiation information received from the transmitting device 100 to the outside and a radiation monitoring screen corresponding to the radiation information received from the receiving processing unit 210. It may be made of a separate monitoring terminal 220 to output. That is, in general, the radiation zone includes a place that handles radiation, such as a nuclear power plant, or a place where you want to check the condition of the radiation dose, and the monitoring terminal 220 is a manager of a central control room where wireless communication is impossible due to a firewall It can be a terminal. At this time, it goes without saying that the reception processing unit 210 and the monitoring terminal 220 are provided with a communication interface for transmitting and receiving information related to radiation dose.

In this specification, the receiving device 200 will be described as one device.

In FIG. 1, the transmitting device 100 acquires a radiation detection signal in a predetermined time unit, converts it into a wireless signal, and transmits it to the receiving device 100. At this time, the transmission device 100 obtains driving power using a nickel-63-based beta battery, and the amount of power that the transmission device 100 can stably drive is charged based on the amount of charge per hour of the nickel-63-based beta battery. The radiation dose measurement and radiation information are wirelessly transmitted to the receiving device 200 in a unit of time. At this time, the period for measuring the radiation dose and transmitting the radiation information wirelessly is preset in consideration of the operating conditions of the beta battery and the transmitting apparatus 200. For example, the transmission device 100 equipped with a nickel-63-based beta battery operates to satisfy a condition having a driving time within 350msec with a 3V DC voltage, 500mA or more, and the radiation measurement period is set to "1 hour". I can.

The receiving device 200 generates a radiation monitoring screen using radiation information received from the transmitting device 100 in a preset time unit, and displays the screen. In this case, the radiation monitoring screen includes a radiation distribution screen providing a current radiation distribution state of the radiation zone and a radiation spike screen including a radiation change state for a predetermined time.

FIG. 2 is a block diagram showing a functionally separated internal configuration of the transmission apparatus 100 shown in FIG. 1.

Referring to FIG. 2, the transmission device 100 includes a radiation detection sensor 110, a first wireless communication unit 120, a first data memory 130, a first control unit 140, and a first power supply unit 150. Includes.

The radiation detection sensor 110 is installed at a specific location in the radiation area and generates an electrical signal corresponding to the amount of radiation measured at that location. At least one radiation detection sensor 110 may be installed in one transmission device 100, and different transmission devices 100 may have different numbers of radiation detection sensors 110. In addition, a plurality of radiation detection sensors 110 provided in the transmission device 100 may be installed at different positions or may be grouped and installed in a certain number at a specific position.

In addition, the radiation detection sensor 110 may be configured as a sensor using a photodiode, and various types of radiation sensors may be selectively used according to various detection principles such as ionization, excitation, or chemical action, and types or characteristics of the detection target. have. For example, a PN junction type semiconductor sensor classified as a semiconductor radiation detection sensor is mainly used for alpha (α) ray measurement, and a Geiger-Muller tube is generally used for beta (β) ray or gamma (γ) ray measurement. , But is not limited thereto.

The first wireless communication unit 120 performs wireless communication with the receiving device 200, and in particular, wirelessly transmits radiation information at a predetermined time unit based on a control signal of the first control unit 140.

The first data memory 130 stores various types of information related to the operation of the transmission device 100 including a radiation measurement period.

The first control unit 140 drives the radiation detection sensor 110 in a preset time unit to obtain the current radiation dose, generates radiation information including the obtained radiation amount, and receives it through the first wireless communication unit 120 Control to transmit wirelessly to the device 200.

At this time, the rated voltage used to perform wireless communication with the driving circuit of the radiation detection sensor 110 is DC 3V, and the power required for the radiation dose detection and wireless communication circuit is made within 400mA, and the transmission device 100 The amount of power that can stably supply power for 350msec under conditions of 500mA or more is required.

Accordingly, in the present invention, the radiation measurement period is set to "1 hour" in which driving power can be stably supplied to the transmission device 200, and the radiation dose measurement and wireless transmission processing of the radiation information are performed every hour.

The first power supply unit 150 has a structure in which the voltage generated from the beta battery is stored in an energy absorber and charged with a secondary battery in the energy absorber. That is, the first power supply unit 150 stores the voltage generated from the nickel-63-based beta battery in the energy absorber, and the energy absorber generates μW power per unit cell and stores it in the secondary battery. At this time, the unit cells of the energy absorber may be arranged in parallel to increase the output supplied to the secondary battery. In addition, the power stored in the secondary battery is supplied to the operating power of the transmission device 200 including a radiation detection sensor 110 for measuring radiation and a first wireless communication unit 120 for wirelessly transmitting radiation information.

FIG. 3 is a block diagram showing the internal structure of the receiving device 200 shown in FIG. 1 by functionally separating it.

3, the receiving device 200 includes a second wireless communication unit 210, an information input/output unit 220, a second data memory 230, a second control unit 240, and a second power supply unit 250. Include.

The second wireless communication unit 210 is for performing wireless communication with the transmission device 100, and in particular, receives radiation information wirelessly transmitted from the transmission device 100.

The information input/output unit 220 receives information for monitoring radiation dose from an administrator or outputs radiation monitoring information on a screen. At this time, the information input/output unit 220 selectively outputs a radiation distribution screen and a radiation spike screen according to a manager's request.

The second data memory 230 stores information including radiation dose for each measurement time received from the transmission device 100, a spatial map corresponding to a radiation measurement area, and location information of a radiation detection sensor for each identification code. At this time, the radiation dose for each measurement time is stored for at least 12 hours, and can be discarded after a certain period of time. In addition, the identification code may be a transmission device identification code or a radiation detection sensor identification code.

The second control unit 240 accumulates and stores radiation information received from the transmitting device 100 in a preset time unit in the second data memory 230, and based on the radiation information, the current position and radiation distribution information of the current time. And radiation spike information including spike values for previous times is generated, processed into a screen form, and displayed through the information input/output unit 220.

In addition, when the current radiation dose exceeds a preset reference radiation dose, the second control unit 240 analyzes the spike value variation history of the previous time from the radiation spike information, and if the spike value pattern is a rising pattern, Display a warning message. In this case, the reference radiation dose may be set differently according to the radiation zone.

The second power supply 250 converts an AC voltage of 220V applied from the outside into a DC voltage of a 5V level for driving the reception device 200 and supplies it as operating power of the reception device 200.

4 and 5 are diagrams for explaining a radiation monitoring screen output through the information input/output unit 220, FIG. 4 is a diagram for explaining a radiation distribution screen, and FIG. 5 is a diagram for explaining a radiation spike screen to be.

First, referring to Figure 4, in the present invention, the radiation distribution screen is divided into zone 1, zone 2, zone 3, zone 4, and zone 5 in units of 1 m radius around the location of the radiation detection sensor 110, and each zone Is expressed in a color corresponding to the previously calculated measurement data.

The radiation distribution information may be generated as shown in Table 1 below.

In addition, color animation is displayed by setting the radiation value range of the highest level to red and the radiation value range of the lowest level to green. Is marked to be. For example, when the radiation level of zone 1 is expressed in yellow as an intermediate level, it is displayed to gradually change to a color closer to green according to the measured data values for each zone.

The radiation distribution screen is generated in a form in which the radiation distribution information is expressed on a radiation space map to correspond to the location of the radiation detection sensor 110.

Meanwhile, referring to FIG. 5, the radiation spike screen is configured to provide a time spike table 221 for each location of the radiation detection sensor 110 and a maximum spike table 222 for the radiation area on the radiation area map M. do.

The time spike table 221 shows the state of the radiation measurement value measured by the radiation detection sensor 110 between the radiation measurement values 1 hour, 2 hours, 3 hours, 4 hours, 5 hours, 6 hours ago and the current measurement value. Based on the deviation, it is calculated in a fixed time unit, so that the degree of change in the time axis of the radiation dose by time at each location can be checked.

The time spike table 221 includes an identification code 221a, a currently collected radiation dose 221b, and a spike value 221c for each predetermined time during a previous schedule. At this time, the identification code 221a may be a transmission device identification code or a radiation detection sensor identification code.

In addition, the spike values 221c and spike out for each time are calculated as in Equation 1 below. Here, Equation 1 is under the condition that the transmitting device 100 and the receiving device 200 are normally operated for more than 24 hours, and the radiation information received from the transmitting device 100 in the receiving device 200 is normally stored for more than 24 hours. Is calculated.

At this time, spike out is the spike value, rR is the radiation dose at the current time, Rz _1h is the radiation dose 1 hour ago, Rz _2h is the deviation between the current time radiation dose and the radiation dose 2 hours ago, and Rz _3h is the current time radiation dose and Deviation between radiation doses 3 hours ago,… , Rz _6h is the deviation between the current dose and the previous dose of 6 hours.

In Equation 1, the previous 2 hours, 3 hours, ... in the state that the initial change amount of the radiation dose is set by subtracting the radiation dose (Rz _1h ) 1 hour before the radiation dose (rR) at the current time. , By calculating the sum of the deviations between the radiation doses before 6 hours, the degree of change in the radiation dose for each time unit is expanded and quantified through time-to-time deviations. Therefore, the degree of change can be more strongly recognized by the manager.

In more detail,

In the time spike table 221 of FIG. 5, the spike value 221c for each time is calculated by applying a radiation dose deviation from the reference time of the corresponding spike value to 6 hours before. That is, when the current radiation dose detection time is 20:00, the radiation dose at 1 hour ago (1H) at 19:00 is subtracted from the current radiation dose, and in this state, 18:00, 17:00, 16:00, 15:00, It is calculated as the absolute value of the sum of the deviation values of each radiation dose at 14 o'clock and the current radiation dose. And, the spike value based on 18:00, 2 hours ago (2H), subtracts the radiation dose at 17:00 from the 18:00 radiation dose, and in this state, at 16:00, 15:00, 14:00, 13:00 and 12 It is calculated as the absolute value of the sum of the deviation values of each radiation dose and the 18 o'clock radiation dose. In this way, the spike value at 14 o'clock, 6 hours ago (6H), is subtracted from the current radiation dose at 13 o'clock. It is calculated as the absolute value of the sum of the deviation values of each radiation dose of and 14 o'clock radiation dose.

In addition, the maximum spike table 222 includes an identification code (SENSOR ID), which is the maximum (MAX) and the second maximum (2nd), and the radiation dose (VALUE) in each state. In FIG. 5, it can be seen that the current radiation dose at the location where the identification code is G3 RE002 is “0.80” and the current radiation dose at the location where the identification code is G1 RE002 has the second maximum value as “0.79”. Through this, the manager can easily recognize that the maximum radiation dose is emitted from the location where the current identification code is G3 RE002 and the location where the identification code is G1 RE002, and these locations are separated from each other in the radiation zone map. You can see that it is not. On the other hand, when the maximum radiation dose and the second maximum radiation dose are extracted within the same area, the manager can predict the movement path of the radiation in the corresponding area.

Next, the operation of the radiation dose monitoring system using the beta battery according to the present invention will be described with reference to the flowchart shown in FIG. 6.

First, radiation measurement period information is stored in the transmission device 100, and radiation zone map information including the location information of the radiation detection sensor 110 of the transmission device 100 is stored in the reception device 200. At this time, the radiation measurement period is set to 1 hour in consideration of the charge amount of the nickel-63-based beta battery.

In the above state, when the radiation measurement period is reached (ST100), the transmission device 100 sets the radiation detection sensor 110 and the first wireless communication unit 130 to the operating state, and receives the received from the radiation detection sensor 110. Radiation information including a radiation value, a radiation measurement time, and an identification code (a transmission device identification code or a radiation detection sensor identification code) is generated and transmitted to the reception device 200 (ST200). Subsequently, the transmission device 100 sets the radiation detection sensor 110 and the first wireless communication unit 130 to a standby state.

In addition, in the step ST100, when an abnormality occurs in the operation, for example, if the charge amount of the first power supply 150 is less than a preset reference charge level, the ST200 step is not performed. This is to prevent the radiation value having an error value from being provided to the receiving device 200 because the radiation value is not properly measured by the radiation detection sensor 110 due to insufficient charging power of the first power supply unit 150.

Meanwhile, the reception device 200 accumulates and stores radiation information received from the transmission device 100 in a predetermined period unit in the second data memory 230 (ST300).

The receiving device 200 generates radiation distribution information by using the currently received radiation information (ST400).

Then, the receiving device 200 determines whether a predetermined condition for generating radiation spike information is satisfied (ST500). At this time, the receiving device 200 checks whether the radiation information stored in the second data memory 230 is continuously stored for at least 12 hours in 1-hour increments.

When the radiation spike information generation condition is satisfied in the step ST500, a spike value of the radiation measurement time unit is generated for a previous period using Equation 1, and radiation spike information is generated using this (ST600).

Then, the receiving device 200 calls the radiation zone map information stored in the second data memory 230 and maps the location of the radiation detection sensor 110 on the basis of the identification code included in the radiation information on the radiation zone map. A distribution screen and a radiation spike screen are generated and output through the information input/output unit 220 (ST700).

That is, the receiving device 200 generates a radiation distribution screen in which radiation distribution information as shown in Fig. 4 is expressed for each radiation detection sensor position on the radiation area map, and radiation spike information is expressed for each radiation detection sensor position on the radiation area map. A radiation spike screen of the form shown in FIG. 5 is generated.

At this time, the receiving device 200 selectively outputs a radiation distribution screen or a radiation spike screen according to the information input from the manager through the information input/output unit 220, and when the condition for generating the radiation spike information is not satisfied in step ST500, Only the radiation distribution screen is provided. That is, basically, only the radiation distribution screen is provided for a certain period of time after system operation.

100: transmitting device, 200: receiving device,
201: receiving processing unit, 202: monitoring terminal.
110: radiation detection sensor, 120, 210: wireless communication unit,
130, 230: data memory, 140, 240: control unit,
150, 250: power supply unit, 220: information input/output unit.

Claims (5)

At least one transmitting device disposed at different locations that operates using the charging power of the beta battery, measures the radiation dose every hour, and wirelessly transmits radiation information including the radiation dose and the corresponding identification code;
The radiation information received from the transmitting device is expressed and output on the radiation zone map in which the transmitting devices are installed, and a reference color corresponding to the current radiation dose is displayed at the corresponding location based on the identification code of each transmitting device, and the reference color is centered. A radiation distribution screen that displays and outputs a color corresponding to the reduced radiation dose by reducing the radiation dose by a certain radius unit, the current radiation dose by each radiation measurement location, the radiation dose 1 hour ago and the current radiation dose And a receiving device that provides a radiation spike screen that displays and outputs the spike value calculated by using the deviation between the radiation dose by 1 hour unit for the previous 6 hours, and
The spike value is a radiation dose monitoring system using a beta battery, characterized in that calculated by the following equation.

Here, spike out is the spike value, rR is the radiation dose at the current time, Rz _1h is the radiation dose 1 hour ago, Rz _2h is the deviation between the current time radiation dose and the radiation dose 2 hours ago, Rz _3h is the current time radiation dose and Deviation between radiation doses 3 hours ago,… , Rz _6h is the deviation between the current dose and the previous dose of 6 hours.
The method of claim 1,
The radiation spike screen is a radiation dose monitoring system using a beta battery, characterized in that it is configured to provide a maximum spike table including the radiation measurement position information and the radiation dose of the current maximum and the second maximum radiation amount in the radiation area.
The method of claim 1,
Beta characterized in that the transmitter has a nickel-63-based beta battery, generates radiation information and wirelessly transmits the radiation information to the receiver to satisfy a condition having a driving time within 350msec with a power of 3V DC voltage and 500mA or more. Radiation dose monitoring system using batteries.
The method of claim 1,
The transmitting device is configured not to wirelessly transmit radiation information to the receiving device when an abnormality occurs in operation,
The receiving device stores the radiation information received from the transmitting device in a data memory, and generates the spike screen information only when the radiation information for the radiation detection time for more than 12 hours is continuously stored. Radiation dose monitoring system.
The method of claim 1,
When the current radiation dose exceeds a preset reference radiation dose, the receiver analyzes the spike value fluctuation history of the previous time from the radiation spike information, and additionally displays a warning message on the radiation monitoring screen when the spike value pattern is a rising pattern. Radiation dose monitoring system using a beta battery, characterized in that to output.

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