KR200344802Y1 - Portable Radiation Detector and Applied it as an Experimental Apparatus for Radiation Shield - Google Patents

Abstract

The present invention is a portable radiation measuring instrument having a Geiger-Müller coefficient tube for measuring radiation, a display unit for displaying the measured radiation dose, and an operation panel for operating the measuring instrument. It is characterized in that it comprises a support rod having a predetermined length, which is built in one side, installed in one side of the main body, a small amount of reference line is attached to one end, and a handle is attached to the other end.

In addition, the present invention is a portable measuring device and the measuring instrument is mounted in the horizontal and longitudinal direction; A distance meter inserted into and withdrawn from one side of the measuring instrument pedestal and provided with a ruler on an upper surface thereof; A support installed at one end of the distance plate and having at least two grooves formed thereon, the pair of guides having a predetermined height coupled to the upper surface of the support plate while being spaced at predetermined intervals; A radiation source support plate slidably detached along one of the grooves of the support, and having a radiation source attached to a surface facing the portable radiometer; It provides a radiation shielding experiment apparatus including a shielding plate made of a radiation shielding material, sliding detachable along the groove of the support between the measuring instrument pedestal and the radiation source support plate.

Description

Portable Radiation Detector and Applied It as an Experimental Apparatus for Radiation Shield

The present invention relates to a portable radiation measuring device and a radiation shielding test apparatus using the same, and more particularly, a portable radiation measuring device and a portable radiation measuring device, which can easily check the operating state of the measuring device because a small amount of reference source is built in. The present invention relates to a radiation shielding test apparatus capable of testing radiation transmittance according to the type and thickness of a shielding plate and attenuation according to a distance between a radiation source and a Geiger coefficient tube.

Radiation refers to α-, β-, and γ-rays emitted by the collapse of radionuclides, but broadly includes particle beams and electromagnetic waves generated by various reactions involving atomic nuclei. . Among these, alpha rays and beta rays are particle beams which are directly related to the collapse of the atomic nucleus due to radioactive decay. The main body of the alpha ray is the atom nucleus of helium, and the main body of the beta ray is the electron. In contrast, gamma rays are electromagnetic waves with short wavelengths.

Common properties for radiation include ionization, photographing, and fluorescence. Radiation interacts with matter, causing it to ionize and lose its energy.

On the other hand, environmental pollution caused by radioactive materials due to the expansion of the use of radiation, radiation disturbance caused by this, and human injury caused by exposure of radiation has become an important social problem.

On the other hand, various methods are used, such as an electrical measuring device using ionization to detect and measure radiation, a scintillation counter using fluorescence of radiation, and a photo plate using a photosensitive action of radiation. Among these, as an electrical measuring instrument, various types of ionization boxes, such as Geiger-Müller counters, have been used since ancient times. An ionization box is a device that collects ions generated in a gas by means of radiation and measures the intensity of the radiation passing by measuring the change of electrode potential.The Geiger-Müller counter is a pulse generated by the discharge generated in the discharge tube by ionization of the gas. It is a device which derives and amplifies this and counts the number of radiation particles.

In the case of a conventional measuring apparatus using a Geiger-Müller coefficient tube, the inspection was performed by approaching the Geiger-Müller coefficient tube from the outside while carrying a separate reference radiation source to check the operation state of the measuring instrument. However, this method has a problem that there is a risk of losing the source and difficult to maintain the correct distance from the Geiger-Müller coefficient pipe, the accuracy of the measurement is poor.

The present invention has been proposed in view of the above, and an object of the present invention is to provide a portable radiation measuring device capable of easily and accurately checking the operating state of the measuring device.

Another object of the present invention is to measure radiation in the natural world and compare it with radiation used in our daily lives. To provide an experimental device.

The above object of the present invention is a portable radiation measuring instrument having a Geiger-Müller coefficient tube for measuring radiation, a display for displaying the measured radiation dose, and an operation panel for operating the measuring instrument. It is achieved by a portable radiation measuring instrument including a support rod having a predetermined length with a built-in muller coefficient tube installed inside one side of the main body, a small amount of reference source attached to one end, and a handle attached to the other end.

In addition, an object of the present invention and the measuring instrument base is seated in the horizontal and vertical direction of the portable radiometer; A distance meter inserted into and withdrawn from one side of the measuring instrument pedestal and provided with a ruler on an upper surface thereof; A support installed at one end of the distance plate and having at least two grooves formed thereon and coupled to a support plate upper surface with a pair of guides having a predetermined height spaced at a predetermined interval; A radiation source support plate slidably detached along one of the grooves of the support, and having a radiation source attached to a surface facing the portable radiometer; It is achieved by a radiation shielding experiment apparatus comprising a shielding plate made of a radiation shielding material, sliding detachable along the groove of the support between the meter pedestal and the radiation source support plate.

Other objects, specific advantages, and novel features of the present invention will become more apparent from the following detailed description and the preferred embodiments associated with the accompanying drawings.

1 is a block diagram of a portable radiometer according to the present invention.

Figure 2a is a portable radiation measuring device according to the present invention, a partial cutaway perspective view showing a state in which the support rod is attached to the base line at one end inside the shield tube.

FIG. 2B is a partial cutaway perspective view illustrating a state in which the supporting rod is pulled out of the shielding tube in FIG.

3 is a perspective view showing a pedestal and a radiation source and a shield plate support for supporting a portable radiometer in the radiation shielding test apparatus according to the present invention.

Figure 4a, 4b is a perspective view showing an example of use of the radiation shielding test apparatus according to the present invention.

<Explanation of Signs of Major Parts of Drawings>

10 portable radiation measuring instrument 11 support rod

12: reference source 13: guide

14 shield tube 15 display unit

16: operation panel 17: Geiger-Müller coefficient tube

18: measuring window 19: connection terminal

20: measuring base 21: horizontal pedestal

25: vertical stand 30: distance meter

40: support 42: guide groove

50: radiation source support plate 60: shielding plate

Hereinafter, with reference to the accompanying drawings, preferred embodiments of a portable radiation measuring instrument and a radiation shielding test apparatus according to the present invention will be described in detail.

1 is a functional block diagram of a portable radiation measuring instrument according to the present invention.

As shown in FIG. 1, the portable radiation measuring apparatus according to the present invention includes a measuring unit 1 for detecting radiation and a radiation dose, a control unit 2 for controlling each function of the measuring unit, and a measuring unit. The display unit 3 which displays the measured radiation dose, the memory unit 4 which stores the radiation dose measured by the measurement unit, and the interface unit 5 for connecting with an external device. Therefore, the radiation dose measured by the measuring unit 1 is displayed on the display unit 3, and the radiation dose value stored in the memory unit 4 by the external device connected via the interface 5 can be used.

More specifically, the configuration of an embodiment of a portable radiation measuring instrument according to the present invention will be described in detail with reference to FIGS. 2A and 2B.

Figure 2a is a portable radiation measuring instrument according to the present invention, a partially cutaway perspective view showing a state in which the support rod is attached to the base line at one end inside the shield tube, Figure 2b is a Geiger counting tube withdrawal from the shield tube in Figure 2a Some incisions showing the state of close proximity to (GM tube, Geiger-Müller coefficient tube).

As shown in Figures 2a, 2b, the portable radiation measuring instrument 10 according to the present invention is a rectangular parallelepiped shape as a whole, similar to a mobile phone. That is, the display unit 15 is formed in the upper part of the front surface, and an operation panel 16 provided with function keys for operating the measuring device is formed in the lower part thereof, and a Geiger-Müller coefficient tube 17 is provided inside the upper surface. . The Geiger-Müller coefficient tube 17 is a short Geiger-Müller coefficient tube, and a measurement window 18 is formed on the upper side of the side of the Geiger-Müller coefficient tube.

In addition, a support rod 11 is inserted into and pulled out of the upper surface of one side, and a handle 11a is attached to one end of the support rod 11 and a small amount of reference source 12 is attached to the other end. . The reference source 12 attached to the other end of the base rod 11 is inserted into a hollow shield tube 14 made of a radiation shielding material, for example, lead to shield radiation leakage. Meanwhile, the shielding tube 14 may be omitted according to the radiation dose emitted by the reference source 12. And between the upper surface of the measuring device 10 and the shielding tube 14, a hollow guide tube 13 for guiding the insertion / withdrawal of the support rod 11 is provided.

On the other hand, a connection terminal 19 is provided below one side of the measuring device 10 for connecting to an external device, in particular a personal computer in which a geographic information program (GIS) is incorporated.

Next, a radiation shielding test apparatus using the above-described portable radiometer will be described.

As shown in FIG. 3, the radiation shielding test apparatus includes a measuring base 20 on which the portable radiation meter 10 is placed, a distance meter 30 provided with a ruler 32, and a radiation source 52. Consisting of a support 40 having a guide groove 42 in which the radiation source support plate 50 and the shielding plate 60 slide and detach.

The measuring pedestal 20 has a box shape and is mounted on the upper, lower and left sides of the upper surface of the portable radiation measuring instrument 10 in a horizontal direction, that is, the upper surface of the portable radiation measuring instrument 10 faces the radiation source support plate 50. The latching jaws 22, 22 'and 23 are respectively formed to fix the position so as to form the horizontal pedestal 21. In addition, on one side of the measuring instrument pedestal 20, the vertical pedestal for fixing the position so that the portable radiation measuring instrument 10 is seated in the longitudinal direction, that is, the measurement window 18 facing the radiation source support plate 50 ( 25) is coupled to slide and insert / draw. The vertical pedestal 25 includes a flat plate 26 supporting the bottom surface of the portable radiation measuring instrument 10, a locking jaw 27 coupled to one end of the flat plate 26, and the flat plate 26 coupled to the bottom surface of the flat plate 26. It consists of a plate support 28 substantially the same as the height of the measuring base 20.

One end of the distance meter 30 is coupled to one side of the measuring base 20 so as to be inserted / drawn, and a ruler 32 indicating a distance is attached to an upper surface thereof.

The other end of the distance meter 30 is coupled to the support 40 having a radiation source support plate 50 to which the radiation source 52 is attached and a guide groove 42 in which the shield plate 60 is slid and detached. The support 40 is formed of a guide groove 42 into which the radiation source supporting plate 50 and the shielding plate 60 slide and are inserted, respectively, and a pair of guides 41 and 41 'having a predetermined height. It is coupled to the upper surface of the support plate 43 while being spaced at positive intervals.

The radiation source 52 is attached to the radiation source support plate 50 coupled to the pair of guide grooves 42 of the support 40, and the radiation source 52 is a trace amount, preferably α-, β-, and γ-rays. It is possible to be any amount that emits extremely small amount that does not affect even if exposed to human body.

The shield plate 60 coupled to the other pair of guide grooves 42 of the base 40 is composed of various materials and thicknesses, and copper plates, lead plates, and the like are used.

Hereinafter, the operation of the portable radiometer and the radiation shielding test apparatus according to the present invention.

In order to check the normal operating state of the portable radiation measuring instrument 10 according to the present invention, as shown in Figure 2b, holding the handle (11a) formed on one end of the support rod 11 and holding the support rod 11 to the shield tube 14 ), The radiation level is measured by operating the operation panel 16 with the reference source 12 positioned at the short window of the Geiger-Müller coefficient tube 17. The measured radiation dose is displayed on the display unit 15, so that the normal operating state of the portable radiation measuring instrument 10 can be easily determined. After the inspection of the normal operating state of the portable radiometer, as shown in Figure 2a, the reference source 12 is inserted into the shield tube 14 to be shielded safely.

Next, a method of using the radiation shielding test apparatus will be described with reference to FIGS. 4A and 4B. First, as illustrated in FIG. 4A, the portable radiation measuring instrument 10 is measured so that the upper surface of the measuring instrument faces the radiation source support plate 50. After mounting on the pedestal 20 and coupling the radiation source support plate 50 to the guide grooves 42 of the support 40, respectively, the distance is changed by the distance meter 30, and the shielding plate having various materials and thicknesses By measuring the radiation dose while combining (60) alternately, it is possible to experience the attenuation phenomenon according to the nature of the radiation, the penetrating power to the shielding plate, and the distance between the radiation and the measuring instrument.

In addition, as shown in FIG. 4B, the portable radiation meter 10 is seated on the vertical pedestal 25 of the measuring pedestal 20 such that the measuring window 18 faces the radiation source support plate 50. By measuring the amount of radiation transmitted through the window of the Geiger-Müller coefficient tube, it is possible to experience attenuation due to the nature of the radiation, the penetrating power to the shield plate, and the distance between the radiation and the measuring instrument.

On the other hand, the radiation measurement value measured through the measuring device is stored in the measuring instrument and connected to a computer with a geographic information program through the connection terminal 19 to display the measurement position for each measurement value on the computer by latitude and longitude.

According to the present invention as described above, it is possible to easily check the normal operating state of the portable radiometer.

In addition, by measuring the radiation present in the natural world and comparing it with radiation used around our lives, we can solve the right understanding of radiation and vague fear.

In addition, by connecting the portable radiometer according to the present invention to a computer with a built-in geographic information program, it is possible to easily display the measurement position for each measurement value.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it is possible to make various modifications or variations without departing from the spirit and scope of the invention. Therefore, the appended utility model registration claims will include any modifications or variations belonging to the subject matter of the present invention.

Claims (8)

In the portable radiation measuring instrument having a Geiger-Müller coefficient tube for measuring radiation, a display unit for displaying the measured radiation dose, and an operation panel for operating the measuring instrument, the measuring device 10 is a short-gauge Geiger-Müller coefficient measuring instrument. It is built in the upper one side of the main body, and installed inside one side of the main body, a small amount of reference source 12 is attached to one end, and the other end includes a support rod 11 having a predetermined length attached to the handle (11a), It is possible to easily check the operation state of the measuring device by drawing the support bar 11 and approaching the short window of the Geiger-Müller coefficient tube 17 to display the measured radiation dose of the reference source. Radiation meter. The method of claim 1, wherein the measuring device 10, And a measuring window (18) is formed on a side surface of the measuring device main body at a position corresponding to the short window of the Geiger-Müller coefficient tube (17). The method of claim 2, And a hollow shield tube (14) made of a radiation shielding material into which one end of the support rod (11) to which the trace reference source (12) is attached is inserted. The method of claim 3, wherein the measuring device 10, And a hollow guide tube (13) for guiding the movement of the support rod (11) as it moves between the shield tube (14) and the window of the Geiger-Müller coefficient tube (17). The method of claim 4, wherein the measuring device 10, And a recording medium for storing the measured radiation dose, and an external side thereof is provided with a connection terminal (19) for connecting to a computer in which a geographic information program is embedded. The method of claim 3, wherein the measuring device 10, And a recording medium for storing the measured radiation dose, and an external side thereof is provided with a connection terminal (19) for connecting to a computer in which a geographic information program is embedded. A measuring pedestal 20 into which the portable radiation measuring instrument 10 according to any one of claims 1 to 6 is seated in the horizontal and vertical directions; A distance meter 30 inserted into and withdrawn from one side of the measuring pedestal 20 and having a ruler 32 installed thereon; At least two grooves 42 are formed at one end of the distance plate 30, and a pair of guides 41 and 41 ′ having a predetermined height are spaced apart at predetermined intervals from the support plate 43. A support 40 coupled to the upper surface; A radiation source support plate (50) which is slidably detached along any one groove of the support (40) and has a radiation source (52) attached to a surface facing the portable radiation meter (10); And a shielding plate 60 made of a radiation shielding material, which is detachably slid along the groove of the support 40 between the meter pedestal 20 and the radiation source support plate 50, The distance between the portable radiation measuring device 10 and the radiation source support plate 50 to which the radiation source is attached is changed by using the distance meter 30, and the type of the shielding plate 60 is changed to measure the radiation to prevent radiation properties. Radiation shielding tester that can grasp the attenuation phenomenon according to the penetrating power of the plate and the distance between the radiation source and the measuring instrument. The method of claim 7, wherein The measuring instrument pedestal 20 has a rectangular parallelepiped shape, and the upper surface 21 is positioned so that the upper surface of the Geiger-Müller coefficient tube embedded in the portable radiation measuring instrument 10 faces the radiation source support plate 50 and the position thereof is fixed. To constitute a transverse pedestal for the purpose; Radiation shielding experimental apparatus, characterized in that it further comprises a vertical pedestal slidably coupled into one side and positioned so that the window of the Geiger-Müller counter is directed toward the radiation source support plate (50).