JPH09230059A - Organism detecting method using millimeter wave - Google Patents

Organism detecting method using millimeter wave

Info

Publication number
JPH09230059A
JPH09230059A JP8036209A JP3620996A JPH09230059A JP H09230059 A JPH09230059 A JP H09230059A JP 8036209 A JP8036209 A JP 8036209A JP 3620996 A JP3620996 A JP 3620996A JP H09230059 A JPH09230059 A JP H09230059A
Authority
JP
Japan
Prior art keywords
wave
change
amplitude
living body
millimeter wave
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP8036209A
Other languages
Japanese (ja)
Inventor
Minoru Saiki
実 濟木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP8036209A priority Critical patent/JPH09230059A/en
Publication of JPH09230059A publication Critical patent/JPH09230059A/en
Withdrawn legal-status Critical Current

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  • Geophysics And Detection Of Objects (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

PROBLEM TO BE SOLVED: To detect an organism confined under a shelter such as a collapsed building or rubbish. SOLUTION: Electromagnetic wave of millimeter wave is radiated by a transmit-receive antenna 10, and the reflected wave is received by the transmit- receive antenna 10. The phase change of the received wave is detected by a phase change detecting part 15, and the amplitude change of the received wave is detected by an amplitude change detecting part 16. The degree of the change is displayed on a display part 17. When the degree of the change exceeds a fixed value, it is judged that an organism 21 exists there.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、地震等で倒壊した
建物の中から生体を探知するための方法、特にミリ波を
用いた探知方法に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for detecting a living body in a building collapsed by an earthquake or the like, and more particularly to a detection method using millimeter waves.

【0002】[0002]

【従来の技術】一般に、大地震によって倒壊した建物の
下やがれきの下などのしゃへい物に閉じ込められた生体
を探す従来の探知方法には、 1)犬により人間の臭いを嗅ぎ分ける。 2)集音マイクにより助けを求める人間の声をキャッチ
する。 などがあった。また、昭和63年電子情報通信学会春季
全国大会、荒井郁男、鈴木努著「B−2−2 マイクロ
波による生体計測用変位センサ」、p1−551〜1〜
552においては、マイクロ波による生体計測が提案さ
れており、特公昭7−104416号公報及び特公昭7
−104417号公報においては赤外線検出素子による
人体の検出装置が提案されている。
2. Description of the Related Art Generally, in the conventional detection method for searching for a living body trapped in a shielded object such as a building collapsed due to a large earthquake or under debris, 1) a dog smells a human. 2) Catch the human voice calling for help with a microphone. There was. In addition, 1988 IEICE Spring National Convention, Ikuo Arai, Tsutomu Suzuki, "B-2-2 Displacement Sensor for Biological Measurement by Microwave", p1-551 ~ 1
In 552, biological measurement using microwaves has been proposed, and is disclosed in Japanese Examined Patent Publication No. 104416/1974 and Japanese Examined Patent Publication No.
In Japanese Patent Laid-Open No. 104417, there is proposed a human body detection device using an infrared detection element.

【0003】[0003]

【発明が解決しようとする課題】上記の探知方法におい
て、 1)犬は数時間働くのが限界で、その後数十時間休ませ
なければならない。 2)集音マイクは疲れきって声も出せない生体を発見で
きない。 という問題点があった。また、上記のマイクロ波による
生体計測においては、生体が可視状態にあることを前提
にしたものであり、生体が不可視状態である場合には、
しゃへい物によるマイクロ波の減衰のため、探知方法へ
の応用には技術的に満足できるものが得られなかった。
このことは、上記の赤外線検出素子による人体の検出装
置においても同様であった。
DISCLOSURE OF THE INVENTION In the above detection method, 1) the dog has a limit of working for several hours, and then must rest for several tens of hours. 2) The sound pickup microphone cannot find a living body that is exhausted and cannot speak. There was a problem. Further, in the biological measurement by the above microwave, it is assumed that the living body is in a visible state, and when the living body is in an invisible state,
Due to the attenuation of microwaves by the shield, we were not able to obtain a technically satisfactory application to the detection method.
This also applies to the human body detection device using the infrared detection element.

【0004】[0004]

【課題を解決するための手段】本発明の一つの態様に係
るミリ波を用いた生体の探知方法は、ミリ波を放射する
工程と、その反射波を受信して受信波の位相変化又は振
幅変化を検出する工程と、その受信波の位相変化又は振
幅変化を生体探知のためのデータとして出力する工程と
を有するものである。本発明の他の態様に係るミリ波を
用いた生体の探知方法は、ミリ波を放射する工程と、そ
の反射波を受信して受信波の位相変化又は振幅変化を検
出する工程と、その受信波の位相変化又は振幅変化に基
づいて生体の有無を判断する工程とを有するものであ
る。本発明においてはミリ波を使用しており、このミリ
波はしゃへい物による減衰が小さく、このため、しゃへ
い物を介して生体に対してミリ波を放射することがで
き、また、その反射波も受信することができる。そし
て、この受信波(反射波)の位相又は振幅は生体の呼吸
による腹部及び心拍による胸部の上下動によって変化す
るので、受信波の位相又は振幅の変化を検出することに
より、しゃへい物の下の生体を高精度に探知することが
できる。
A method of detecting a living body using a millimeter wave according to one aspect of the present invention includes a step of radiating a millimeter wave and a phase change or amplitude of a received wave by receiving the reflected wave. It includes a step of detecting a change and a step of outputting a phase change or amplitude change of the received wave as data for detecting a living body. A method of detecting a living body using a millimeter wave according to another aspect of the present invention includes a step of radiating a millimeter wave, a step of receiving a reflected wave of the millimeter wave and detecting a phase change or an amplitude change of a received wave, and the reception thereof. And the step of judging the presence or absence of a living body based on the phase change or the amplitude change of the wave. In the present invention, the millimeter wave is used, and the millimeter wave is less attenuated by the shield, and therefore, the millimeter wave can be radiated to the living body through the shield, and the reflected wave also Can be received. Since the phase or amplitude of this received wave (reflected wave) changes due to the vertical movement of the abdomen and the chest caused by the heartbeat due to the respiration of the living body, by detecting the change in the phase or amplitude of the received wave, The living body can be detected with high accuracy.

【0005】[0005]

【発明の実施の形態】BEST MODE FOR CARRYING OUT THE INVENTION

(実施の形態1.)図1は本発明の実施の形態1に係る
生体の探知方法が適用された装置の構成を示したブロッ
ク図である。この実施の形態は、遮蔽された生体の呼吸
による腹部と心拍による胸部の上下動をミリ波により探
知することを基本機能としている。図1の装置は、送受
信アンテナ10、方向性結合器11、周波数混合器1
2、ミリ波発信部13、位相・振幅検出部14、位相変
化検出部15、振幅変化検出部16、及び表示部17か
ら構成される。送受信アンテナ10は、ミリ波の電磁波
を送信及び受信する部分である。方向性結合器11は伝
送線路上の入射波と反射波に比例した電力を別々に取り
出す部分である。周波数混合器12は2つの異なる周波
数を混合して、その和又は差を取り出す部分である。ミ
リ波発信部13はミリ波の電磁波を発生する部分であ
る。位相・振幅検出部14は入射信号から位相情報及び
振幅情報をそれぞれ信号として取り出す部分である。位
相変化検出部15は位相・振幅検出部14により取り出
された位相情報から位相変化を検出する部分である。振
幅変化検出部16は、位相・振幅検出部14により取り
出された振幅情報から振幅変化を検出する部分である。
表示部17は、位相変化検出部15により検出された位
相変化及び振幅変化検出部16により検出された振幅変
化を視覚情報へ変換して表示する部分である。
(Embodiment 1) FIG. 1 is a block diagram showing a configuration of an apparatus to which a living body detection method according to Embodiment 1 of the present invention is applied. This embodiment has a basic function of detecting up and down movements of the abdomen due to the breathing of the shielded living body and the chest due to the heartbeat using millimeter waves. The apparatus of FIG. 1 includes a transmitting / receiving antenna 10, a directional coupler 11, and a frequency mixer 1.
2, a millimeter wave transmission unit 13, a phase / amplitude detection unit 14, a phase change detection unit 15, an amplitude change detection unit 16, and a display unit 17. The transmission / reception antenna 10 is a part that transmits and receives millimeter-wave electromagnetic waves. The directional coupler 11 is a portion for separately extracting electric power proportional to the incident wave and the reflected wave on the transmission line. The frequency mixer 12 is a part that mixes two different frequencies and extracts the sum or difference. The millimeter wave transmission unit 13 is a portion that generates a millimeter wave electromagnetic wave. The phase / amplitude detection unit 14 is a unit that extracts phase information and amplitude information from the incident signal as signals. The phase change detector 15 is a part that detects a phase change from the phase information extracted by the phase / amplitude detector 14. The amplitude change detection unit 16 is a unit that detects an amplitude change from the amplitude information extracted by the phase / amplitude detection unit 14.
The display unit 17 is a unit that converts the phase change detected by the phase change detection unit 15 and the amplitude change detected by the amplitude change detection unit 16 into visual information and displays it.

【0006】次に、図1の装置の動作を説明する。ミリ
波発信部13から発振された信号の一部は、方向性結合
器11へ入り、送受信アンテナ10を介してミリ波の電
磁波を放射する。放射されたミリ波の電磁波は、建物や
瓦礫等のしゃへい物20を透過して生体21へ照射され
る。照射された生体21は呼吸による腹部と心拍による
胸部の上下動により位相及び振幅が変化したミリ波の反
射波を放つ。ミリ波の反射波は、しゃへい物20を透過
して送受信アンテナ10へ入り、方向性結合器11を介
してミリ波発信部13から発振された信号の一部と周波
数混合器12にて混合される。混合された信号は、位相
・振幅検出部14にて位相情報の信号と振幅情報の信号
とに分けられる。位相情報の信号は、位相変化検出部1
5へ入り、ミリ波発信部13から発振された信号と生体
反射された信号の位相変化を検出し、表示部17におい
て位相変化の度合が表示される。また、振幅情報の信号
は、振幅変化検出部16へ入り、ミリ波発信部13から
発振された信号と生体から反射された信号の振幅変化を
検出し、表示部17において振幅変化の度合が表示され
る。この変化の度合いが所定値を越えている場合には、
生体21がしゃへい物20の下にあるものと判断され
る。
Next, the operation of the apparatus shown in FIG. 1 will be described. A part of the signal oscillated from the millimeter wave transmission unit 13 enters the directional coupler 11 and radiates a millimeter wave electromagnetic wave through the transmission / reception antenna 10. The radiated electromagnetic waves of millimeter waves pass through the shield 20 such as a building or rubble and are applied to the living body 21. The irradiated living body 21 emits a millimeter wave reflected wave whose phase and amplitude have changed due to the vertical movement of the abdomen due to respiration and the chest due to the heartbeat. The reflected wave of the millimeter wave passes through the shield 20 and enters the transmitting / receiving antenna 10, and is mixed by the frequency mixer 12 with a part of the signal oscillated from the millimeter wave transmitter 13 via the directional coupler 11. It The mixed signal is divided into a phase information signal and an amplitude information signal by the phase / amplitude detection unit 14. The phase information signal is sent to the phase change detector 1
5, the phase change of the signal oscillated from the millimeter wave transmission unit 13 and the signal reflected by the living body is detected, and the degree of the phase change is displayed on the display unit 17. Further, the signal of the amplitude information enters the amplitude change detection unit 16, detects the amplitude change of the signal oscillated from the millimeter wave transmission unit 13 and the signal reflected from the living body, and displays the degree of the amplitude change on the display unit 17. To be done. If the degree of this change exceeds the specified value,
It is determined that the living body 21 is under the shield 20.

【0007】以上のようにこの実施の形態によれば次の
ような効果が得られる。 1)電気仕掛けのために24時間稼働可能であり一刻を
争う人命救助活動の効率が上がる。 2)生体の腹部と胸部の上下動を検出するため声の出な
い生体が検出できる。 3)ミリ波の電磁波を用いたのでしゃへいされた生体を
探知できる。 4)マイクロ波を用いた場合に比べて、しゃへい物の透
過時における電磁波の減衰量が約10分の1になり生体
検出の向上が期待できる。
As described above, according to this embodiment, the following effects can be obtained. 1) It is possible to operate for 24 hours due to the electric device, which improves the efficiency of life-saving activities which are competing for the moment. 2) Since the vertical movement of the abdomen and chest of the living body is detected, a living body without vocalization can be detected. 3) The shielded living body can be detected because the millimeter wave electromagnetic wave is used. 4) Compared to the case of using microwaves, the attenuation of electromagnetic waves when transmitting a shield is about one-tenth, and improvement in living body detection can be expected.

【0008】(実施の形態2.)なお、上述の実施の形
態においては、位相変化検出部15の出力及び振幅変化
検出部16の出力の双方を生体探知のデータとして利用
しているが、いずれか一方の出力だけでも生体を探知す
ることができる。また、上述の実施の形態においては、
位相変化検出部15及び振幅変化検出部16が位相変化
及び振幅変化を検出して表示部17に表示させる例につ
いて説明したが、位相変化検出部15又は振幅変化検出
部16において、位相変化又は振幅変化が所定値を超え
ているかどうかを判断し、所定値を超えている場合にお
いては生体の探知を示す信号を出力するようにしてもよ
い。また、上述の実施の形態におては、生存者の探知に
適用した例を説明したが、送受信アンテナ10のビーム
幅を絞れば、生存哺乳類動物の探知にも適用できる。
(Embodiment 2) In the above-described embodiment, both the output of the phase change detecting section 15 and the output of the amplitude change detecting section 16 are used as data for detecting a living body. The living body can be detected by using only one of the outputs. In the above-described embodiment,
The example in which the phase change detection unit 15 and the amplitude change detection unit 16 detect the phase change and the amplitude change and display them on the display unit 17 has been described, but in the phase change detection unit 15 or the amplitude change detection unit 16, the phase change or the amplitude change is detected. It may be determined whether the change exceeds a predetermined value, and if the change exceeds the predetermined value, a signal indicating detection of a living body may be output. Further, in the above-described embodiment, an example applied to detection of a survivor has been described. However, if the beam width of the transmission / reception antenna 10 is narrowed, it can be applied to detection of a living mammal.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の実施の形態1に係る生体の探知方法が
適用された装置の構成を示したブロック図である。
FIG. 1 is a block diagram showing a configuration of an apparatus to which a living body detection method according to a first embodiment of the present invention is applied.

【符号の説明】[Explanation of symbols]

10 送受信アンテナ 11 方向性結合器 12 周波数混合器 13 ミリ波発信部 14 位相・振幅検出部 15 位相変化検出部 16 振幅変化検出部 17 表示部 10 Transmitting / receiving antenna 11 Directional coupler 12 Frequency mixer 13 Millimeter wave transmitter 14 Phase / amplitude detector 15 Phase change detector 16 Amplitude change detector 17 Display

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 ミリ波を放射する工程と、その反射波を
受信して受信波の位相変化又は振幅変化を検出する工程
と、その受信波の位相変化又は振幅変化を生体探知のた
めのデータとして出力する工程とを有することを特徴と
するミリ波を用いた生体探知方法。
1. A step of radiating a millimeter wave, a step of receiving a reflected wave thereof to detect a phase change or an amplitude change of a received wave, and data for detecting a phase change or an amplitude change of the received wave for detecting a living body. The method for detecting a living body using a millimeter wave, comprising:
【請求項2】 ミリ波を放射する工程と、その反射波を
受信して受信波の位相変化又は振幅変化を検出する工程
と、その受信波の位相変化又は振幅変化に基づいて生体
の有無を判断する工程とを有することを特徴とするミリ
波を用いた生体探知方法。
2. A step of radiating a millimeter wave, a step of receiving the reflected wave to detect a phase change or an amplitude change of the received wave, and a presence or absence of a living body based on the phase change or the amplitude change of the received wave. A method for detecting a living body using millimeter waves, which comprises a step of judging.
JP8036209A 1996-02-23 1996-02-23 Organism detecting method using millimeter wave Withdrawn JPH09230059A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8036209A JPH09230059A (en) 1996-02-23 1996-02-23 Organism detecting method using millimeter wave

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8036209A JPH09230059A (en) 1996-02-23 1996-02-23 Organism detecting method using millimeter wave

Publications (1)

Publication Number Publication Date
JPH09230059A true JPH09230059A (en) 1997-09-05

Family

ID=12463370

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8036209A Withdrawn JPH09230059A (en) 1996-02-23 1996-02-23 Organism detecting method using millimeter wave

Country Status (1)

Country Link
JP (1) JPH09230059A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001033551A (en) * 1999-07-16 2001-02-09 Kato Electrical Mach Co Ltd Device and method for surveying animals
JP2005270570A (en) * 2004-03-26 2005-10-06 Canon Inc Biological information monitoring apparatus
US8260194B2 (en) 2007-07-25 2012-09-04 Sony Corporation Information communication method, information communication system, information reception apparatus, and information transmission apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001033551A (en) * 1999-07-16 2001-02-09 Kato Electrical Mach Co Ltd Device and method for surveying animals
JP2005270570A (en) * 2004-03-26 2005-10-06 Canon Inc Biological information monitoring apparatus
JP4620959B2 (en) * 2004-03-26 2011-01-26 キヤノン株式会社 Biological information monitor device
US8260194B2 (en) 2007-07-25 2012-09-04 Sony Corporation Information communication method, information communication system, information reception apparatus, and information transmission apparatus

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Effective date: 20030506