JP2012088280A - Radiation detection device - Google Patents

Radiation detection device Download PDF

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JP2012088280A
JP2012088280A JP2010237590A JP2010237590A JP2012088280A JP 2012088280 A JP2012088280 A JP 2012088280A JP 2010237590 A JP2010237590 A JP 2010237590A JP 2010237590 A JP2010237590 A JP 2010237590A JP 2012088280 A JP2012088280 A JP 2012088280A
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radiation
energy
radiation detection
detection device
detection apparatus
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JP2012088280A5 (en
JP5693139B2 (en
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Eisuke Itatsu
英輔 板津
Yukitsugu Takahashi
幸嗣 高橋
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Seiko EG&G Co Ltd
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Seiko EG&G Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a radiation detection device which improves the convenience by enabling information on energy of incident radioactive rays to be comprehended quickly and easily.SOLUTION: A radiation detection device 10 includes a radiation detector 11 which detects the energy of the incident radioactive rays, and a speaker 41 which outputs the sound of a frequency changed in accordance with the energy detected by the radiation detector 11. The radiation detection device improves the convenience by enabling the energy of the incident radioactive rays to be comprehended by acoustic sense quickly and easily.

Description

この発明は、放射線検出装置に関する。   The present invention relates to a radiation detection apparatus.

従来、例えば可搬型の放射線測定器が知られている（例えば、特許文献１参照）。
このような放射線測定器において、線量率に加えて入射放射線のエネルギースペクトルを放射線測定器に備えられた表示画面に表示可能な放射線測定器が知られている。 Conventionally, for example, a portable radiation measuring instrument is known (see, for example, Patent Document 1).
In such a radiation measuring instrument, a radiation measuring instrument capable of displaying an energy spectrum of incident radiation in addition to a dose rate on a display screen provided in the radiation measuring instrument is known.

特開２００９−２５００５号公報JP 2009-25005 A

ところで、上記従来技術に係る放射線測定器においては、操作者は入射放射線のエネルギーに関する情報を把握するために、放射線測定器に備えられた表示画面を目視する必要が生じ、例えば移動しながら測定を行なう場合などであっても、視線の移動を伴う煩雑な動作が必要になるという問題が生じる。
このため、放射線の測定時に入射放射線のエネルギーに関する情報を迅速かつ容易に把握可能として利便性を向上させることが望まれている。 By the way, in the radiation measuring instrument according to the above prior art, the operator needs to visually check the display screen provided in the radiation measuring instrument in order to grasp the information on the energy of the incident radiation. Even when it is performed, there arises a problem that a complicated operation accompanied by movement of the line of sight is required.
For this reason, it is desired to improve convenience by making it possible to quickly and easily grasp information on the energy of incident radiation when measuring radiation.

本発明は上記事情に鑑みてなされたもので、放射線の測定時に入射放射線のエネルギーに関する情報を迅速かつ容易に把握可能として利便性を向上させることが可能な放射線検出装置を提供することを目的としている。   The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a radiation detection apparatus capable of improving convenience by making it possible to quickly and easily grasp information regarding the energy of incident radiation when measuring radiation. Yes.

上記課題を解決して係る目的を達成するために、本発明の第１態様に係る放射線検出装置は、入射放射線のエネルギーを検出するエネルギー検出手段（実施の形態での放射線検出器１１）と、前記エネルギー検出手段により検出された前記エネルギーに応じて変化する周波数の音を出力するスピーカー（実施の形態でのスピーカー４１）とを備える。   In order to solve the above problems and achieve the object, the radiation detection apparatus according to the first aspect of the present invention includes energy detection means (radiation detector 11 in the embodiment) for detecting the energy of incident radiation, A speaker (speaker 41 in the embodiment) that outputs a sound having a frequency that changes in accordance with the energy detected by the energy detection means.

本発明の第１態様に係る放射線検出装置によれば、操作者は、例えば放射線検出装置を目視するなどの煩雑な動作を積極的に行なう必要無しに、スピーカーから出力される音によって、いわば受動的かつ直接的に聴覚が刺激されることで、入射放射線のエネルギーの情報を迅速かつ容易に把握することができ、利便性を向上させることができる。   According to the radiation detection apparatus according to the first aspect of the present invention, the operator can passively use the sound output from the speaker without having to actively perform complicated operations such as visually observing the radiation detection apparatus. By stimulating the auditory sense directly and directly, it is possible to quickly and easily grasp the information on the energy of the incident radiation, and the convenience can be improved.

本発明の実施の形態に係る放射線検出装置の構成図である。It is a block diagram of the radiation detection apparatus which concerns on embodiment of this invention. 本発明の実施の形態の変形例に係る放射線検出装置の構成図である。It is a block diagram of the radiation detection apparatus which concerns on the modification of embodiment of this invention. 本発明の実施の形態に係る放射線検出装置の放射線検出器から出力される検出パルス信号の波高分布（つまり、エネルギースペクトル）に対応して、スピーカーから発生する音の周波数分布の例を示す図である。It is a figure which shows the example of the frequency distribution of the sound which generate | occur | produces from a speaker corresponding to the wave height distribution (namely, energy spectrum) of the detection pulse signal output from the radiation detector of the radiation detection apparatus which concerns on embodiment of this invention. is there.

以下、本発明の一実施形態に係る放射線検出装置について添付図面を参照しながら説明する。
本実施の形態による放射線検出装置１０は、例えば図１に示すように、放射線検出器１１と、処理装置１２と、出力装置１３とを備えて構成されている。 Hereinafter, a radiation detection apparatus according to an embodiment of the present invention will be described with reference to the accompanying drawings.
The radiation detection apparatus 10 according to the present embodiment is configured to include a radiation detector 11, a processing apparatus 12, and an output apparatus 13, for example, as shown in FIG.

放射線検出器１１は、例えば、放射線の入射に応じて発光するＮａＩなどのシンチレータ２１と、シンチレータ２１の発光を電気的な検出パルス信号に変換する光電子増倍管２２と、光電子増倍管２２から出力される検出パルス信号を増幅するプリアンプ２３とを備えて構成され、入射放射線のエネルギーに応じた波高値を有する検出パルス信号を出力する。   The radiation detector 11 includes, for example, a scintillator 21 such as NaI that emits light in response to the incidence of radiation, a photomultiplier tube 22 that converts light emitted from the scintillator 21 into an electrical detection pulse signal, and a photomultiplier tube 22. And a preamplifier 23 for amplifying the output detection pulse signal, and outputs a detection pulse signal having a peak value corresponding to the energy of the incident radiation.

処理装置１２は、例えば、放射線検出器１１から出力されるアナログ信号の検出パルス信号を、この検出パルス信号の波高値に応じた値を有するデジタル信号に変換するアナログ・デジタル変換器（ＡＤＣ）３１と、ＡＤＣ３１から出力されるデジタル信号に応じて、入射放射線のエネルギーに応じた周波数の交流信号を出力する発振器（ＯＳＣ）３２とを備えて構成されている。   For example, the processing device 12 converts an analog detection pulse signal output from the radiation detector 11 into a digital signal having a value corresponding to the peak value of the detection pulse signal. And an oscillator (OSC) 32 that outputs an AC signal having a frequency corresponding to the energy of the incident radiation in accordance with the digital signal output from the ADC 31.

なお、処理装置１２は、例えば図２に示すように、ＡＤＣ３１およびＯＳＣ３２の代わりに、低周波域（ＬＦ：Low Frequency）あるいは可聴帯域（ＡＦ：Audio Frequency）の電圧制御発振器（ＶＣＯ）３３を備えてもよい。
この場合には、先ず、放射線検出器１１から出力されたアナログ信号の検出パルス信号は、電圧制御発振器（ＶＣＯ）３３の制御端子に制御電圧として入力される。そして、電圧制御発振器（ＶＣＯ）３３は、制御端子に印加された制御電圧に応じて変化する低周波域あるいは可聴帯域の発振周波数を有する交流信号を出力する。
つまり、電圧制御発振器（ＶＣＯ）３３は、放射線検出器１１から出力される検出パルス信号の波高値（つまり、入射放射線のエネルギーに応じた波高値）に応じた低周波域あるいは可聴帯域の周波数の交流信号を出力する。 For example, as illustrated in FIG. 2, the processing device 12 includes a voltage controlled oscillator (VCO) 33 in a low frequency range (LF: Low Frequency) or an audible band (AF: Audio Frequency) instead of the ADC 31 and the OSC 32. May be.
In this case, first, the detection pulse signal of the analog signal output from the radiation detector 11 is input to the control terminal of the voltage controlled oscillator (VCO) 33 as a control voltage. The voltage controlled oscillator (VCO) 33 outputs an AC signal having an oscillation frequency in a low frequency range or an audible range that changes according to the control voltage applied to the control terminal.
In other words, the voltage controlled oscillator (VCO) 33 has a frequency in a low frequency range or an audible range corresponding to the peak value of the detection pulse signal output from the radiation detector 11 (that is, the peak value corresponding to the energy of the incident radiation). Output AC signal.

出力装置１３は、処理装置１２から出力される交流信号の周波数の音を発生させるスピーカー４１と、処理装置１２から出力される交流信号の周波数に応じた色で発光するインジケータ４２とを備えて構成されている。   The output device 13 includes a speaker 41 that generates sound having the frequency of the AC signal output from the processing device 12 and an indicator 42 that emits light in a color corresponding to the frequency of the AC signal output from the processing device 12. Has been.

この放射線検出装置１０によれば、スピーカー４１から発生する音の周波数分布は、放射線検出器１１から出力される検出パルス信号の波高分布（つまり、エネルギースペクトル）に対応することになり、例えば図３（Ａ），（Ｂ）においては、137Ｃｓから放出された単一エネルギー（６６１．６ｋｅＶ）のγ線に対する検出パルス信号の波高分布に対応する周波数分布の音がスピーカー４１から発生する。 According to this radiation detection apparatus 10, the frequency distribution of the sound generated from the speaker 41 corresponds to the wave height distribution (that is, the energy spectrum) of the detection pulse signal output from the radiation detector 11, for example, FIG. In (A) and (B), the sound of the frequency distribution corresponding to the wave height distribution of the detection pulse signal for the single energy (661.6 keV) γ rays emitted from 137 Cs is generated from the speaker 41.

上述したように、本実施の形態による放射線検出装置１０によれば、操作者は、例えば放射線検出装置１０を目視するなどの煩雑な動作を積極的に行なう必要無しに、スピーカー４１から出力される音（つまり、入射放射線のエネルギーに応じて周波数が変化する音）によって、いわば受動的かつ直接的に聴覚が刺激されることで、入射放射線のエネルギーの情報を迅速かつ容易に把握することができ、利便性を向上させることができる。
また、この放射線検出装置１０の操作者の熟練度によっては、スピーカー４１から出力される音に基づいて、核種同定や線量率の把握も可能であり、より一層、利便性を向上させることができる。 As described above, according to the radiation detection apparatus 10 according to the present embodiment, the operator is output from the speaker 41 without having to actively perform complicated operations such as visually observing the radiation detection apparatus 10, for example. The sound (that is, the sound whose frequency changes according to the energy of the incident radiation) stimulates the hearing passively and directly, so that the information on the energy of the incident radiation can be grasped quickly and easily. , Can improve convenience.
Further, depending on the level of skill of the operator of the radiation detection apparatus 10, it is possible to identify the nuclide and grasp the dose rate based on the sound output from the speaker 41, which can further improve convenience. .

また、インジケータ４２の発光の色が入射放射線のエネルギーに応じて変化することから、例えば入射放射線のエネルギーに関する情報が数値などで表示される場合に、この数値を意識的に目視して読み込む必要があることに比べて、意識的な目視を必要としない周辺視などで、より迅速かつ容易に入射放射線のエネルギーを把握することができ、利便性を向上させることができる。   Further, since the color of light emitted from the indicator 42 changes according to the energy of the incident radiation, for example, when information related to the energy of the incident radiation is displayed as a numerical value, it is necessary to consciously read this numerical value visually. Compared to the above, the energy of incident radiation can be grasped more quickly and easily by peripheral vision that does not require conscious visual observation, and convenience can be improved.

なお、上述した実施の形態において、放射線検出装置１０は、可搬型の放射線検出装置（例えば、サーベイメータや個人被爆線量計など）に限定されず、据置型などの他の放射線検出装置（例えば、エリアモニタなど）であってもよい。
なお、上述した実施の形態において、放射線検出装置１０は、シンチレータ２１によるシンチレーション検出器に限定されず、入射放射線のエネルギーに関する情報を検出可能な他の検出器（例えば、半導体検出器など）であってもよい。 In the above-described embodiment, the radiation detection apparatus 10 is not limited to a portable radiation detection apparatus (for example, a survey meter or a personal exposure dosimeter), but other radiation detection apparatuses (for example, area) Monitor).
In the above-described embodiment, the radiation detection apparatus 10 is not limited to the scintillation detector by the scintillator 21, but is another detector (for example, a semiconductor detector) that can detect information on the energy of incident radiation. May be.

１０ 放射線検出装置
１１ 放射線検出器（エネルギー検出手段）
４１ スピーカー 10 radiation detector 11 radiation detector (energy detection means)
41 Speaker

Claims (1)

入射放射線のエネルギーを検出するエネルギー検出手段と、
前記エネルギー検出手段により検出された前記エネルギーに応じて変化する周波数の音を出力するスピーカーとを備えることを特徴とする放射線検出装置。 Energy detection means for detecting the energy of the incident radiation;
A radiation detection apparatus comprising: a speaker that outputs sound having a frequency that changes according to the energy detected by the energy detection means.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015206780A (en) * 2014-04-08 2015-11-19 清水建設株式会社 Radiation perception device
JP2017003388A (en) * 2015-06-09 2017-01-05 富士電機株式会社 Radiation detection device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02232583A (en) * 1989-03-07 1990-09-14 Fuji Electric Co Ltd Survey meter
JPH09304538A (en) * 1996-05-10 1997-11-28 Aloka Co Ltd Radiation detector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02232583A (en) * 1989-03-07 1990-09-14 Fuji Electric Co Ltd Survey meter
JPH09304538A (en) * 1996-05-10 1997-11-28 Aloka Co Ltd Radiation detector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015206780A (en) * 2014-04-08 2015-11-19 清水建設株式会社 Radiation perception device
JP2017003388A (en) * 2015-06-09 2017-01-05 富士電機株式会社 Radiation detection device

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