KR101751945B1 - Device for tesing GM Tube Sensor - Google Patents

Abstract

The present invention relates to a GM Tube sensor testing apparatus, and more particularly, to a GM Tube sensor testing apparatus that irradiates multichannel GM tubes at one time to acquire the volume and characteristics of GM tubes by testing all the channels.
According to the above description, the multi-channel GM Tube sensor can be tested at the same time to analyze the characteristics of the sensor and defects, and it is possible to generate a variable high voltage (300 to 1,000 V) according to characteristics of the sensor. And for the calibration of the radiation measuring device to which the GM Tube sensor is applied, it is possible to grasp the characteristics of the sensor in each section through the irradiation of the cumulative radiation for a predetermined time in the representative 5 to 10 intervals It is effective.

Description

GM Tube Sensor Test Device

[0001] The present invention relates to a GM Tube sensor test apparatus, and more particularly, to a GM Tube sensor test apparatus which irradiates multi-channel GM tubes at one time, .

The Geiger-Mueller Tube sensor is one of the longest type of radiation detectors and is used in radiation measurement equipment because it is cheap and easy to operate.

[0002] Conventionally, Korean Patent No. 0470465 discloses a portable radioactivity measuring apparatus using a Geiger Muller tube (GM-Tube) PIN diode and a remote radioactivity transmitting and receiving apparatus and method using the same. More particularly, PIN diodes and Geiger-Muller tubes (GM-Tube) are installed inside the radioactivity measuring device so that they can be detected through the Geiger-Mueller tube when the radioactivity is low. It is possible to precisely detect the radiation exposure dose detected from the low dose to the high dose within a short time.

Since GM tube sensors depend on imports at a high price and have a problem of long delivery time, companies that develop and manufacture radiation measuring instruments and measuring devices by adopting most GM Tube sensors require a GM tube sensor In this case, the quality warranty period of the imported sensor is about 3 months. After this period, even if the abnormality or defect due to the difficulty of quality assurance for the GM Tube sensor is returned, Exchange and the like are difficult.

In addition, there is also a problem that it is time-consuming and costly to verify the characteristics of good products and sensors by individually testing purchased sensors in units of one.

It is an object of the present invention to provide a GM Tube sensor test apparatus which irradiates a multichannel GM tube at a time and grasps the volume and characteristics of the GM tube by testing the GM tube of all channels .

Another object of the present invention is to provide a GM Tube sensor test apparatus for analyzing the characteristics of a sensor with a circuit capable of generating a variable high voltage since the characteristics of the plate are different for each sensor when the GM tube sensor is tested.

For the calibration of the radiation measuring device to which the GM Tube sensor is applied, the cumulative radiation dose in the representative section for the allowable dose (500uSv / h, 1000uSv / h, 2000uSv / h) And to provide a GM Tube sensor test apparatus capable of detecting the GM tube sensor.

The present invention relates to a detection unit for detecting a strength of radioactivity by measuring a waveform generated by applying a high pressure to a GM Tube constituting a sensor with a plurality of channels; A counting unit for measuring a value detected through the detecting unit and obtaining an accumulation value; A control unit for determining a coefficient control, a high-voltage setting, and an LCD output according to a command from a user and the measurement result; And a variable voltage supply circuit for applying a variable voltage to the detection unit according to characteristics of the GM Tube sensor.

Preferably, the detecting unit can measure the intensity of radioactivity by applying a high pressure to the GM tube and measuring the waveform generated by the gamma ray.

Also preferably, the coefficient unit comprises a bias circuit applied to the GM Tube and a waveform shaping filter for each GM Tube.

Also, preferably, the control unit can modify the magnitude and width of the pulse generated from the output voltage of the GM Tube so that the coefficient unit can process the bias voltage and set the bias voltage.

Preferably, the variable voltage supply circuit further includes: a high voltage generating unit for switching the main power supply current and rectifying the impulse waveform appearing on the secondary side of the transformer during the switching interruption to generate a high voltage; A back pressure converting unit for rectifying the AC voltage of the secondary side; A smoothing and noise removing unit for removing an AC component (noise) from an output DC voltage of the back pressure converting unit; And a voltage detection control unit for monitoring an output voltage to determine whether to operate the high voltage generating unit.

Preferably, the GM Tube sensor testing apparatus further includes a GUI setting unit for setting a variable voltage supply setting and a cumulative time setting step by step in the GUI.

Preferably, the GM Tube sensor test apparatus includes a variable voltage supply setting module for setting a high voltage change by a GUI so that the sensor can be tested in a steady state and a measurable whole range; And a cumulative radiation analysis module that writes values of power and reference irradiation dose in a remote PC so that the radiation measurement value can be updated in accordance with the Excel format.

According to the above description, the multi-channel GM Tube sensor can be tested at the same time to analyze the characteristics of the sensor and defects, and it is possible to generate a variable high voltage (300 to 1,000 V) according to characteristics of the sensor. And for the calibration of the radiation measuring device to which the GM Tube sensor is applied, it is possible to grasp the characteristics of the sensor in each section through the irradiation of the cumulative radiation for a predetermined time in the representative 5 to 10 intervals It is effective.

1 is a configuration diagram of a GM Tube sensor test apparatus according to an embodiment of the present invention,
2 is a diagram illustrating hardware of a GM Tube sensor test apparatus according to an embodiment of the present invention,
FIG. 3 is a view illustrating a structure of one channel GM coefficient subchannel of a GM Tube sensor test apparatus according to an embodiment of the present invention,
FIG. 4 is a diagram illustrating a structure of a 48-channel GM coefficient unit of a GM Tube sensor test apparatus according to an embodiment of the present invention,
5 is a photograph showing an actual production of a GM Tube sensor test apparatus according to an embodiment of the present invention,
6 is a diagram illustrating a hardware configuration of a variable voltage supply circuit of a GM Tube sensor test apparatus according to an embodiment of the present invention.
7 is a view illustrating a GUI for testing a GM Tube sensor of a GM Tube sensor test apparatus according to an embodiment of the present invention,
8 is a diagram illustrating a test result of a GM Tube sensor test apparatus according to an exemplary embodiment of the present invention.

Specific features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. It is to be noted that the detailed description of known functions and constructions related to the present invention is omitted when it is determined that the gist of the present invention may be unnecessarily blurred.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings.

FIG. 1 is a configuration diagram of a GM Tube sensor test apparatus according to an embodiment of the present invention, and FIG. 2 is an exemplary view illustrating hardware of a GM Tube sensor test apparatus according to an embodiment of the present invention.

1 and 2, a GM Tube sensor testing apparatus according to an embodiment of the present invention includes a detecting unit 100, a counting unit 200, a control unit 300, an instruction processing unit 400, a communication unit 500 A display unit 600, a variable voltage supply circuit 700, and a GUI setting unit 800.

The detection unit 100 is configured to generate an electrical signal from radioactivity.

The structure of the GM counter, which measures the intensity of the radioactivity by applying a proper high pressure to the GM tube and measuring the waveform generated by the gamma radiation, can be used. The detection unit 100 may configure the sensor with a maximum of 48 channels within 28 cm in diameter and use overlapping portions on the circuit in common for measurement at the same time, and only the portion to be separated can be separately configured for each sensor.

The counting unit 200 measures the value detected through the detecting unit and obtains an accumulated value.

A voltage corresponding to the characteristics of the GM Tube is generated in the counting unit 200 for performing this function (500 V in the case of the LND 713 used in this embodiment), and the bias voltage is applied to the GM tube through the high resistance.

FIG. 3 is a view illustrating a structure of one channel GM coefficient subchannel of a GM Tube sensor test apparatus according to an embodiment of the present invention, and FIG. 4 is a block diagram of a GM Tube sensor testing apparatus according to an embodiment of the present invention. Channel GM coefficient unit according to an embodiment of the present invention;

If nothing happens in the GM Tube, the input of the pulse counter maintains the basic bias state. When the gamma-ray discharge occurs in the GM tube, the input of the pulse counter pulses down from the basic bias voltage, and the width of the pulse is several usec.

The maximum measurement range is about 10KPulse / sec. However, the interval between the pulses is not constant but random, so high-speed processing is required. The bias circuit and waveform shaping filter applied to each GM Tube can be configured separately for each GM Tube.

The controller 300 is configured to determine coefficient control, high voltage setting, and LCD output contents based on commands and measured values from the user.

The controller 300 for performing such a function outputs the output voltage of several tens of volts at the GM tube, so that the amplitude and the width of the pulse generated in the waveform shaping filter are modified to be processed by the subsequent pulse counter, To VDD of the processor. At this time, the pulse size is limited within the processor input range, and pulse width reduction and bias voltage setting are performed.

In addition, it is possible to transfer the counts per second and the accumulated values, and to use the Cortex M4 32bit STM32F407IET6 processor with 16 channels of interrupts to count the pulses and to combine the results of each processor with one processor. . The ported OS used FreeRTOS Ver 8.1.2, and the TCP / IP protocol used LWIP library.

The instruction processing unit 400 analyzes the instruction from the user and makes a corresponding correspondence.

The command processing unit 400 for performing such a function can transmit the pulse number per second and the measurement value upon request of the accumulation value in the control unit. The processor must have enough speed to handle 10KPulse / sec of interrupts. Since the basic bias of the pulse is VDD, an interrupt that detects a falling edge can be applied.

The communication unit 500 supports the Ethernet connection.

The communication unit 500 for performing such a function can communicate with a remote PC via an Ethernet port and allows the operator to adjust the voltage and calibration settings remotely without setting and adjusting the worker from time to time .

The display unit 600 is configured to display count control, high voltage setting, and LCD output contents based on commands and measured values from the user under the control of the control unit.

The display unit 600 for performing such a function may perform a current status display function of the system.

5 is a photograph showing an actual production of a GM Tube sensor test apparatus according to an embodiment of the present invention. These GM Tube sensor test devices are applied to various measurement devices and portable measurement devices for radiation measurement for imported GM Tube sensors to improve the environment in which the sensor can be tested in a steady state and in a measurable whole area. It is possible to grasp the optimum condition of the sensor of each GM Tube prior to input and apply this information to the production so as to contribute to production and development of products with improved reliability.

The variable voltage supply circuit 700 is configured to apply an appropriate high voltage to the GM tube. In general, the characteristic of the plate is degraded with respect to the use of the GM tube sensor for a long time. In this case, To compensate the performance of the GM Tube sensor test apparatus so as to have the initial optimal sensor characteristics.

The variable voltage supply circuit 700 is configured to easily supply a high voltage variable power supply in response to various types of GM Tube sensors, thereby facilitating characteristics analysis of the sensor.

The most important factor in the performance of a high-voltage power supply is to generate the required high voltage remotely and to supply a constant current so that the voltage does not drop when the 48 sensors are discharged at the same time. Although the voltage offset of several V is not a serious problem for the operation of the sensor in the characteristic of the GM Tube sensor, since the signal is obtained by using the instantaneous voltage drop occurring when the sensor is discharged at the high voltage side, the ripple characteristic at the high- .

6 is a diagram illustrating a hardware configuration of a variable voltage supply circuit of a GM Tube sensor test apparatus according to an embodiment of the present invention.

The variable voltage supply circuit 700 includes a high voltage generating portion 710, a back pressure converting portion 720, a smoothing and noise removing portion 730, and a voltage detecting and controlling portion 740, as shown in FIGS. 1 and 6 do.

In order to obtain a high pressure from a low pressure in the high pressure generating part 710, a method of raising the voltage by using a capacitor and a switch, a raising method by using a transformer, a method of rectifying the AC by back pressure are widely used. A high pressure generating unit according to an embodiment of the present invention may use a method of mixing a transformer and a back pressure rectification to achieve a small size while satisfying the required characteristics.

The high-voltage generating unit switches the main power supply current by using a voltage conversion circuit that is often used in a switching power supply, and can obtain a high voltage by rectifying an impulse-like waveform appearing on the secondary coil during intermittence. Here, the switching signal may generate a switching signal for generating a high voltage from a signal for generating a high voltage and a signal for indicating whether the output voltage has reached a target value.

The back pressure converting portion 720 is a circuit for rectifying the AC voltage on the transformer secondary side to a voltage five times the maximum value. The voltage fluctuation width of the transformer secondary pin is the largest, and becomes the main EMI radiation source.

The smoothing and noise removing unit 730 uses a structure that drives the primary coil in a full bridge manner to remove the noise from the output voltage as effectively as possible, and obtains a high voltage by rectifying the secondary voltage due to the back pressure. At this time, since the voltage ripple occurring in the secondary side of the transformer can be minimized, a sufficient effect can be obtained with a simple filter.

The smoothing and noise removing unit 730 is a circuit for removing an AC component (noise) from an output DC voltage. If a switching frequency and a harmonic are included, noise is generated at 100KHz to several hundreds of MHz. It is difficult to expect a large effect and a passive element is essential. To effectively remove ripple, you can use an LC filter that has good blocking characteristics.

The voltage detection control unit 740 is a circuit for determining whether to operate the high voltage generating unit by monitoring the output voltage, and can compare the high voltage with the reference voltage by reducing the high voltage to about 1/514.

The GUI setting unit 800 is a configuration for improving the environment in which the test can be performed between the steady state of the sensor and the measurable whole area. The variable voltage supply setting module 810 and the cumulative radiation analysis module 820 can be used to set variable voltage supply and set cumulative time for each step.

In order to judge the defect of the existing GM Tube sensor, the calibration is carried out with the portable radiation measuring device after the production is completed. When the defect is detected, the GM tube sensor is reassembled and reassembled. Because of this 3 months, there was a problem in separately measuring the long-delivery GM Tube sensor to which MOQ was applied.

There was a lot of inconvenience to enter the radiation examination room every time when changing the standard dose and change the setting position and test condition. It is necessary to record the measured value periodically during measurement and rewrite the data recorded in the PC's Excel program, There was an inconvenience. Accordingly, it is possible to change the high voltage through the dedicated GUI of the GUI setting unit 800 and automatically store the radiation measurement value in accordance with the Excel format.

In order to test the GM Tube sensor of the radiation measuring apparatus, there is a problem that the operator needs to modify the test environment of the apparatus from time to time according to the distance and reference irradiated dose and voltage, so that the cumulative radiation analyzing module 820 in the remote PC, A dedicated GUI can be set up so that the dose value is automatically written and updated.

The dedicated GUI according to this embodiment uses intel i5 3Ghz processor, 8GB, and 256GB HDD based on Windows 7, and implemented using C language as a programming language. The GUI configuration screen for GM Tube sensor test is as follows.

7 is a diagram illustrating a GUI for testing a GM Tube sensor of a GM Tube sensor test apparatus according to an embodiment of the present invention.

In (1) of FIG. 7, when the indication of the reference radiation intensity used in the calibration is clicked, the vertical line is selected and the CPS value can be written in the vertical line.

(2) is the part that displays the CPS value read from the equipment when measuring the radiation.

(3) is the current radiation intensity value calculated from the CPS (2) read from the equipment.

(4) can be modified one by one by clicking on the CPS value for each sensor in the reference radiation.

(5) is the IP address assigned by the device. The device displays the assigned address on the LCD and indicates operation as a TCP socket server.

(6) is the TCP socket server port number of the device and is fixed at 5000.

(7) is a button box that allows the device to try to connect to the TCP client. When the connection is successful, the fingerprint of the button changes to "Disconnect ".

(8) shows the high voltage setting to be applied to the sensor.

(9) is a portion showing the input of the intensity value of the reference radiation externally applied.

(10) is the remaining CPS count time (when selecting (12) Timer) or the progressed CPS accumulation time (when (13) Elapsed is selected).

(14) is a button box showing the start of CPS accumulation.

(15) is a button box showing the CPS cumulative interruption.

(16) is a button box for initializing to CPS table 0.

(17) is a part for storing the CPS table and displaying a file path / file name designation window to be stored when clicked.

(18) specifies the file path / filename to store the current radiation intensity measurement result

(19) shows the specified filename

(20) clears the file name list

(21) measures the current radiation intensity and starts to store it in the file of (19)

(22) Stop measuring current radiation intensity

(23) In the file list specified in (24), data is rearranged into sensor-specific measurement data, and 48 files (CH_1.csv, CH_2.csv, ..., CH_48.csv) are generated according to the sensor number. (24), 500u.csv, 1m.csv, 2m.csv, and (23) Re-Arrange. (17) and save the result as CpsTable.csv

(25) Click to delete Log (26)

(26) Display command / response to / from the device

After completing the GM Tube sensor test of 48 channels, pressing the Save button will automatically save the data for each GM Tube sensor corresponding to 48 channels. Also, files corresponding to the reference dose rate can be stored together.

For the calibration of the radiation measuring device to which the GM Tube sensor is applied, the cumulative radiation dose of the GUI setting unit which allows the sensor to recognize the characteristics of each section through the cumulative radiation irradiation for a certain time in the representative 5 to 10 intervals The analysis module 820 can be improved.

The following explains the test through the GUI setting part as follows.

First, FreeRTOS was used as the O / S of the GM Tube sensor test apparatus according to the present embodiment, and the LWIP library was used as the TCP / IP protocol.

GM Tube Sensor The controller of the test device operates as a TCP socket server. It calculates the coefficient of the signal transmitted from each sensor according to the command sent from the GUI, generates the reference voltage and control signal for generating high voltage, displays the LCD contents, LED flashing to indicate the function. All commands except count instructions are terminated immediately after execution, and are to be transmitted only at the beginning and end of the coefficient.

Since the controller can process only 16 I / O interrupts at a time, it is monitored by polling. The occasional incoming Ethernet communication / instruction processing is prioritized and only works with interrupts, and the UI basically sends commands only at the start / end of the measurement so that it does not affect the accuracy of the measurement results.

The control unit allows the 48 sensor input signals to be polled at a lower priority and accumulated for the change. Since the number of polling per second is about 190,000 times, and one pulse width is about 150us, since it is about 28 times of scanning per pulse on an average, it can be sufficiently processed by one MPU, so 16 MPUs Were processed using only one without dividing.

The control unit is connected via Ethernet and when the IP address is assigned from the DHCP server, the socket is opened to the TCP server through the port 5000. If you connect to the socket through the UI, you will be in a state where you can send and receive commands, and the command / response record will remain in the Log Message window. In the connected state, you can use all TCP socket commands in "List of Sensor Checker Commands via TCP Sockets". When the socket is connected, the Connect button changes to Disconnect and clicking it disconnects the socket.

The controller needs a high voltage to operate the sensor. The sensor used for the test is 500V.

In order to obtain the characteristics of the sensor, the control unit selects several CPS tables (500uSv / h, 1mSv / h, 2mSv / h are selected here) Set it to measure for a certain period of time, and click the start measurement button.

When the timer value decreases to zero, the control automatically stops the measurement and reads the measured CPS value and records it in the table.

The control unit can specify the file name in the Evaluation item and measure the current radiation intensity by measuring all the selected reference radiation values. The measurement result is displayed in Measured CPS and Measured Sv / h every 10 seconds for 100 seconds, and the file is specified and stored in the specified file.

Then, the control unit changes the intensity of the radiation. After completing the measurement several times, click the ReArrange button to collect the measurement results for each sensor.

8 is a diagram illustrating a test result of a GM Tube sensor test apparatus according to an exemplary embodiment of the present invention. As shown in Fig. 8, in the characteristic calibration table of 48 sensors, the sensor of the CH26 (the failed sensor) does not react and the CPS value is shown as zero. It can be seen that the measured values for each reference dose value of 500uSv / h, 1000uSv / h and 2000uSv / h are shown.

In addition, as shown in Table 1, it is confirmed that the measurement result of 500 uSv / h gamma ray after the calibration (some) shows that the measured value of 1 to 48 channels increases from the accumulation time of 20 seconds to 110 seconds, . In the case of the 27th channel, the cumulative average value of 20 seconds is 0.000418944Sv / h (418.9uSv / h) when the reference dose of 500uSv / h is examined. In the case of 27 channels, the cumulative average value of 110 seconds is 0.000422587Sv / h (422.6uSv / h) when the reference dose of 500uSv / h is examined. In case of 26 channels, it can be confirmed that GM tube sensor does not operate due to defective.

As shown in Table 2, the results of the 1 mSv / h gamma irradiation after the calibration show that the measurement values of 1 to 48 channels are increased from the accumulation time of 20 seconds to 110 seconds and the average value of the accumulated measurement values appears . In the case of one channel, the 20-second cumulative average value shows a value of 0.00099434 Sv / h (0.994 mSv / h) when the reference dose of 1 mSv / h is examined. In the case of one channel, the cumulative average value of 110 seconds is 0.00100566 Sv / h (1.005 mSv / h) when the reference dose of 1 mSv / h is examined. In case of 26 channels, it can be confirmed that GM tube sensor does not operate because of defective.

As shown in Table 3, the results of the 2mSv / h gamma irradiation (some) after calibration show that the measured values of 1 to 48 channels increase from cumulative time of 20 seconds to 110 seconds, and the average value of cumulative measured values appears . In the case of 5 channels, the cumulative average value of 20 seconds shows a value of 0.00203282 Sv / h (2.032 mSv / h) when the reference dose of 2 mSv / h is examined. In the case of 5 channels, the cumulative average value of 110 seconds is 0.00203475Sv / h (2.034mSv / h) when the reference dose of 2mSv / h is examined. In case of 26 channels, it can be confirmed that GM tube sensor does not operate because of defective.

As shown in Table 4, the values measured in the order of 2mSv / h, 1mSv / h, and 500uSv / h for each channel (CH_1 to CH48) are stored in the CH_1.csv to CH_48.csv file .

Also, the result of performing the sensor checker operation of the GM Tube sensor test device (after 3 minutes of accumulation), the red LED on CH_26 can indicate that the sensor is in bad condition.

The GM Tube sensor test apparatus according to an embodiment of the present invention can simultaneously test multi-channel GM Tube sensors to analyze the defectiveness and characteristics of the sensor, and to test GM tube sensors of up to 48 channels within a diameter of 28 cm . These 48 channels are individually supplied with a high voltage and include circuitry for converting the pulse signal from the GM Tube sensor into a signal and circuitry for improving signal variation due to noise.

In addition, since the plate characteristics are different for each GM Tube sensor, a circuit capable of generating a variable high voltage (300 to 1,000 V) is designed to analyze the characteristics of the sensor, and a filter circuit is applied to reduce the voltage ripple after a high voltage is generated. It can include a variable voltage supply setting and a step-by-step cumulative time setting function in a dedicated GUI configuration.

According to the above description, the multi-channel GM Tube sensor can be tested at the same time to analyze the characteristics of the sensor and defects, and it is possible to generate a variable high voltage (300 to 1,000 V) according to characteristics of the sensor. And for the calibration of the radiation measuring device to which the GM Tube sensor is applied, it is possible to grasp the characteristics of the sensor in each section through the irradiation of the cumulative radiation for a predetermined time in the representative 5 to 10 intervals It is effective.

100: Detection unit 200:
300: control unit 400: command processing unit
500: communication unit 600: display unit
700: Variable voltage supply circuit 710: High voltage generator
720: back pressure converting section 730: smoothing and noise removing section
740: voltage detection control unit 800: GUI setting unit
810: variable voltage supply setting module 820: cumulative radiation analyzing module

Claims (7)

A detector for detecting the intensity of radioactivity by measuring a waveform generated in response to radiation incident from the outside to the GM Tube sensor by applying a high voltage to a GM Tube sensor constituted by a plurality of channels;
A counting unit for measuring a value detected through the detecting unit and obtaining an accumulation value;
A control unit for determining a coefficient control, a high-voltage setting, and an LCD output according to a command from a user and the measurement result; And
And a variable voltage supply circuit for applying a variable voltage to the detector according to characteristics of the GM Tube sensor,
Wherein the variable voltage supply circuit generates a voltage corresponding to the characteristics of each GM tube in the counting section and applies a bias voltage to the GM tube through a high resistance.
The method according to claim 1,
Wherein the detecting unit applies a high pressure to the GM tube and measures a waveform generated by the gamma ray to measure the intensity of the radioactivity.
The method according to claim 1,
Wherein the counting unit comprises a bias circuit and a waveform shaping filter applied to the GM Tube for each GM Tube.
The method according to claim 1,
Wherein the control unit modifies the magnitude and the width of the pulse generated from the output voltage of the GM Tube so that the magnitude and the width of the pulse can be processed by the coefficient unit and sets the bias voltage.
The method according to claim 1,
The variable voltage supply circuit
A high voltage generating unit for switching the main power supply current and rectifying the impulse waveform appearing on the secondary side of the transformer during the switching interruption to generate a high voltage;
A back pressure converting unit for rectifying the AC voltage of the secondary side;
A smoothing and noise removing unit for removing an AC component (noise) from an output DC voltage of the back pressure converting unit; And
And a voltage detection control unit for monitoring the output voltage to determine whether to operate the high voltage generating unit.
The method according to claim 1,
Further comprising a GUI setting unit configured to set a variable voltage supply setting and a cumulative cumulative time setting stepwise to the detection unit by a GUI.
The method according to claim 1,
A variable voltage supply setting module for setting a high voltage change by a GUI so that a test can be performed between a normal state of the sensor and a measurable whole area; And
And a cumulative radiation analysis module for writing a value of a power and a reference irradiation dose in a remote PC so that the measured radiation value can be updated in accordance with the Excel format.

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