KR101808577B1 - Neutrons, gamma rays, x-ray radiation detection and integrated control system for the detection - Google Patents

Abstract

The present invention relates to a neutron, gamma ray, and X-ray radiation measurement and integrated control system. The system according to the present invention comprises: a detection unit, an embedded system; and a display unit. The detection unit measures neutron, gamma ray, and X-ray radiation. The embedded system controls the detection unit, monitors the measured information, and transmits the measured information by wire or wireless. The display unit receives the measured information from the embedded system, and displays the measured information. The detection unit includes at least one of a neutron detector and a scintillation detector. The neutron detector (120) includes a neutron sensor, and the scintillation detector (110) includes a gamma/X-ray sensor. The neutron detector includes at least one of a proportional counter and an ion chamber detector. The embedded system includes a main MCU, a monitor unit, and a transmission unit.

Description

{Neutrons, gamma rays, x-ray radiation detection and integrated control system for the detection of neutron, gamma ray,

The present invention relates to neutron, gamma ray, and x-ray radiation measurement and integrated control systems, and more particularly, to neutron detection, gamma ray, and x-ray radiation measurement using a scintillation detector or a neutron detector Gamma ray, and x-ray radiation measurement and integrated control system that enables the user to actively respond by transmitting measurement information to a user.

With the development of the radiation industry, radiation accidents due to the leakage of radiation materials have increased, so it is obligatory for the workers who manage the radiation materials or the radiation meters to use the radiation detection apparatus for measuring the radiation dose at the work site.

On the other hand, as a method of detecting radiation, there are various methods using ionizing action of radiation, excitation action, luminescent action, photosensitive action and the like, and the detection device and detection method are used in accordance with the kind of radiation to be measured , And a radiation dose measuring apparatus and a measuring apparatus for analyzing nuclides are also used.

In addition, since the radiation detection apparatus has a portable structure, the user has to manually take the instrument directly to the area and manually monitor the area or confirm the state of the specific area site by using the surveillance camera. Therefore, There was a risk of causing excessive exposures to the measurer.

Korean Registered Patent No. 1441487 (issued on September 17, 2014)

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an integrated radiation measurement and detection apparatus capable of simultaneously measuring neutron, gamma ray, and x-ray radiation regardless of the kind of radiation to be measured, To be measured remotely or on a network and to enable analysis, thereby preventing the user from being exposed to radiation and the risk of exposure.

According to an aspect of the present invention, there is provided a neutron detector, an embedded system, and a display unit.

The detector measures neutron, gamma ray and x-ray radiation. The embedded system controls the detection unit, monitors the measured information, and transmits the measurement information to the wired / wireless network.

The display unit receives measurement information from the embedded system and displays the measurement information.

The detector includes at least one of a Neutron Detector and a Scintillation Detector. The neutron detector 120 includes a neutron sensor, and the flash detector includes a gamma / x-ray sensor.

The neutron detector includes at least one of a proportional counter and an ion chamber detector.

The embedded system includes a main MCU, a monitor unit, and a transmission unit. The transmitting unit includes at least one of Ethernet, USB having a wired communication function, and Bluetooth having a wireless communication function.

The display unit receives the radiation measurement result from the embedded system via wired / wireless and outputs the result.

As described above, the neutron, gamma ray, and x-ray radiation measurement and integrated control system according to the present invention can measure neutron, gamma ray, and x-ray radiation at the same time regardless of the kind of radiation to be measured, And measuring the x-ray radiation, thereby preventing the risk of the user being circumscribed from the radiation.

1 is a block diagram illustrating a radiation measurement and integrated control system according to an embodiment of the present invention.
2 is a block diagram illustrating an embedded system according to an embodiment of the present invention.
3 is a block diagram illustrating a high voltage generator according to an embodiment of the present invention.
4 is a configuration diagram illustrating a linear regulator according to an embodiment of the present invention.
5 is a block diagram showing a flash detector according to an embodiment of the present invention.
6 is a configuration diagram illustrating a proportional counter according to an embodiment of the present invention.
FIG. 7 is a block diagram illustrating an ion chamber detector according to an embodiment of the present invention. Referring to FIG.
8 is a block diagram illustrating a GM tube detector according to an embodiment of the present invention.
9 is a view showing a display unit according to an embodiment of the present invention.
10 is a configuration diagram illustrating a radiation measurement and integrated control system according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise. Also, the terms " part, "" ... "," module ", and the like described in the specification mean units for processing at least one function or operation, and may be implemented by hardware or software or a combination of hardware and software .

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

Like reference symbols in the drawings denote like elements.

1 is a block diagram illustrating a radiation measurement and integrated control system according to an embodiment of the present invention.

As shown in FIG. 1, the neutron, gamma ray, and X-ray radiation measurement and integrated control system of the present invention includes a detection unit 100, an embedded system 200, and a display unit 300.

The detector 100 for measuring neutrons, gamma rays, and x-ray radiation may include a neutron detector 120 and a scintillation detector 110. The neutron detector 120 may include a neutron sensor and the scintillation detector 110 may include a gamma / x-ray sensor.

In addition, the neutron detector 120 may include at least one of a proportional counter 121 and an ion chamber detector 122.

In addition, a control circuit may be provided outside the detector (flash detector, neutron detector) so as to detect neutrons using a decelerating agent using high-density polyethylene (HDPE).

2 is a block diagram illustrating an embedded system according to an embodiment of the present invention.

As shown in FIG. 2, the embedded system 200 includes a main MCU 210, a monitor 220, and a transmitter 230.

The transmission unit 230 may include an Ethernet 232, a USB 233 having a wired communication function, and a Bluetooth 231 having a wireless communication function.

The monitor unit 220 for status monitoring may include an LCD. The main MP 210 may include an algorithm for detecting neutron, gamma ray, and x-ray radiation, sampling in units of seconds, and converting radiation amount and radiation amount for accumulated pulse and current values.

The Neutron sensor may include an A / D converter for converting a high-precision high-speed signal to digital data. Also, the signal output from the neutron sensor is output with a very low current, and the embedded system 200 measures the measured signal more precisely and quickly.

3 is a block diagram illustrating a high voltage generator according to an embodiment of the present invention.

As shown in FIG. 3, a high voltage generator 400 may be disposed between the main MEP 210 and the ion chamber detector 122. The variable high voltage generator 400 may include a linear regulator 410 and a switching regulator 420.

Since most of the detectors used for neutron and gamma ray and x-ray radiation measurement require high voltage, the high voltage generator 400 is configured to vary from 300V to 2000V through the control of the embedded system 200, So that a high voltage can be applied to each detector.

4 is a configuration diagram illustrating a linear regulator according to an embodiment of the present invention.

4, the linear regulator 410 may include a pulse width modulation (PWM) controller 411, a high voltage generator 412, a back pressure rectifier 413, and a voltage detector 414.

The display unit 300 receives and outputs radiation measurement results from the embedded system 200 by wire or wireless. In addition, the display unit 300 includes a dedicated display system and a GUI for providing measurement information transmission, control condition setting, and calibration functions to an administrator and a user for using the integrated control system, Or a PC or a Tablel PC.

Also, the display unit 300 may include software that indicates radiation dose and radiation amount measurement values, and software that has a calibration and device detail setting function.

The device details setting function may include a communication device and a network setting function, and a log and graph output function of the measured dose and the accumulated dose.

By changing the setting using the GUI of the display unit 300, it is possible to change the measured radiation value to the radiation value, and it is possible to convert the counts per second (cps), the radiation dose rate, By providing a calibration function for each detector for radiation measurement, it can be periodically used as a measuring device by testing and calibrating the device.

In addition, it is possible to perform remote communication using a wired / wireless communication function, and to provide measurement information to a remote internet user in conjunction with a network.

5 is a block diagram showing a flash detector according to an embodiment of the present invention.

As shown in FIG. 5, the flash detector includes a charge amplifier 1001, a pulse shaping amplifier 1002, a baseline restore 1003, and a discriminator (1004).

The charge amplifier 1001 amplifies the fine pulse signal output from the detector 100. The discriminator 1004 converts the pulse formulated through the pulse waveform amplifier 1002 and the base line list 1003 into a digital signal based on a specific voltage.

FIG. 6 is a configuration diagram illustrating a proportional counter according to an embodiment of the present invention, and FIG. 7 is a configuration diagram illustrating an ion chamber detector according to an embodiment of the present invention.

6, the proportional counter 121 includes a pre-amp 1005, a charge amplifier 1001, a pulse shaping amp 1002, A baseline restore 1003, and a discriminator 1004.

7, the ion chamber detector 122 includes a pre-amp 1005, an analog-to-digital converter (ADC) 1006, and a charge capacitor 1007).

8 is a block diagram illustrating a GM tube detector according to an embodiment of the present invention.

As shown in FIG. 8, the GM tube detector 130 may include a pre-amp 1005 and a filter 1008.

This will be described in detail as follows.

The proportional counter tube 121 measures a neutron using a pulsed output, and the ion chamber detector 122 measures the amount of neutrons using the output of the current.

Here, the ion chamber detector 122 may include a preamplifier (Pre-AMP) that converts a current into a voltage and simultaneously amplifies the signal so that a minute current output signal can be measured using the output of the current. The converted voltage signal can be secondarily amplified and converted to a digital signal through an A / D conversion function to display the neutron measurement value.

The flash detector 110 may include a NaI (T1) flash detector 110 capable of measuring low-level gamma rays and X-rays, and may include a variable high voltage generator 110 for use with the NaI (T1) flash detector 110 A Charge Sensitive Amplifier (AMP) 1001 for amplifying the measured fine signal, an ULD (Upper Level Discriminator) for generating a signal into a digital pulse type by setting an upper limit and a lower limit of a recognition range of the generated signal, And an LLD (Lower Level Discriminator).

The neutrons can be classified into fast neutrons and thermal neutrons. The thermal neutrons having a small or slow neutron quantity can be detected through the proportional counter 121.

Since high-speed neutrons are difficult to measure due to their high permeability, shielding and velocity reduction are performed using water, PE (polyethylene) and HDPE (high-density polyethylene), and the deteriorated neutrons are introduced into the proportional counter (121). A large number of high-speed neutrons transmitted at a speed without attenuation can be measured using the ion chamber detector 122.

The ion chamber detector 122 may indicate the magnitude of the measured fast neutron as a current output.

The high voltage generator 400 generates and supplies a voltage so that the flash detector 110 and the neutron detector 120 can be operated on the respective circuits without noise and mutual interference.

In one embodiment, a voltage of 500 to 900 V may be supplied to the GM tube detector 130, a power of 600 to 1200 V may be supplied to the NaI (T1) flash detector 110, A power source of 700 to 3500 V can be supplied to the ion chamber detector 122, and a power source of 200 to 1000 V can be supplied to the ion chamber detector 122.

Accordingly, the present invention can simultaneously measure neutrons (thermal neutrons and fast neutrons) and gamma rays (x-rays).

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, And all changes to the scope that are deemed to be valid.

100: detector 110: scintillation detector
120: Neutron Detector 121: Proportional Counter
122: Ion Chamber Detector
130: GM tube detector (Geiger Muller tube detector)
200: Embedded system 210: Main MCU (Main MCU)
220: monitor part 230:
231: Bluetooth (Bluetooth) 232: Ethernet (Ethernet)
233: USB 300: Display
400: High Voltage Generator (High Voltage Generator)
410: Linear Regulator 411: Pulse Width Modulation (PWM)
412: High pressure generating section 413: Back pressure rectifying section
414: voltage detecting unit 420: switching regulator
1001: Charge sensitive amp 1002: Pulse shaping amp < RTI ID = 0.0 >
1003: Baseline restore 1004: Discriminator
1005: Pre-amp 1006: Analog digital converter (ADC)
1007: Charge capacitor 1008:

Claims (5)

A Proportional Counter for detecting a small amount or a slow neutron of a neutron, and an Ion Chamber Detector for measuring a fast neutron having high permeability so that neutron, gamma ray and x-ray radiation can be simultaneously measured, ) And a scintillation detector for measuring low-level gamma rays and X-rays;
A main MCU for detecting the neutron and the gamma ray and the x-ray radiation by controlling the detection unit, sampling the detected radiation in units of seconds, and converting the radiation dose and the radiation dose for the accumulated pulse and current value;
And a control unit for controlling the setting of the control condition of the detection unit, the calibration function for the detection unit, and the detailed setting of the device (Cps), a radiation dose rate, and a cumulative dose (cps) for each radiation, wherein the radiation dose is a function of the radiation dose, A display unit for converting the display data into the display data
A control unit for receiving a control signal from the main MPE channel so that a proportional counter, an ion chamber detector, and a scintillation detector of the detector can be operated without noise and mutual interference, A variable high voltage generator (Variable High Voltage) generator which generates a variable voltage of 300V to 2000V to supply a voltage corresponding to each detector and applies the variable voltage according to a voltage supplied to the ion chamber detector, Generator)
The variable high voltage generator
And a voltage of 600 to 1200 V is supplied to the scintillator detector, a voltage of 700 to 2000 V is supplied to the proportional counter, and a voltage of 300 to 1000 V is supplied to the ion chamber detector,
The flash detector
A charge amplifier for amplifying the detected fine pulse signal,
A pulse shaping amplifier for shaping the amplified signal into a pulse waveform,
A baseline restore for transforming the formatted pulse based on a specific voltage,
And a discriminator for converting the signal converted through the pulse waveform amplifier and the base line list into a digital signal,
The ion chamber detector
A pre-amplifier for converting a current into a voltage so as to measure a fine current output signal and amplifying the converted signal,
An ADC (Analog Digital Converter) for converting the amplified signal into a digital signal,
And a charge capacitor,
The Proportional Counter
A pre-amplifier for converting a current into a voltage so as to measure a fine current output signal and amplifying the converted signal,
A charge amplifier (second amplifier) for amplifying the amplified signal,
A pulse shaping amplifier for shaping the amplified signal into a pulse waveform,
A baseline restore for transforming the formatted pulse based on a specific voltage,
Gamma ray, and x-ray radiation measurement and integrated control system including a discriminator for converting a signal converted through the pulse waveform amplifier and the base line list into a digital signal.


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