JP3372804B2 - Human body detector - Google Patents
Human body detectorInfo
- Publication number
- JP3372804B2 JP3372804B2 JP35582096A JP35582096A JP3372804B2 JP 3372804 B2 JP3372804 B2 JP 3372804B2 JP 35582096 A JP35582096 A JP 35582096A JP 35582096 A JP35582096 A JP 35582096A JP 3372804 B2 JP3372804 B2 JP 3372804B2
- Authority
- JP
- Japan
- Prior art keywords
- human body
- protective member
- cover
- body detector
- shield
- 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.)
- Expired - Fee Related
Links
Landscapes
- Geophysics And Detection Of Objects (AREA)
- Burglar Alarm Systems (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は人体から放射される
赤外線をもとに人の有無を検出する人体検知器に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a human body detector for detecting the presence or absence of a person based on infrared rays emitted from the human body.
【０００２】[0002]
【従来の技術】従来、人体から放射される赤外線を検出
するようにした人体検知器は、建物への侵入者を監視す
る防犯用途に実用化されている。 図４を基に従来の人
体検知器を説明する。2. Description of the Related Art Conventionally, a human body detector adapted to detect infrared rays emitted from a human body has been put into practical use for crime prevention for monitoring an intruder into a building. A conventional human body detector will be described with reference to FIG.
【０００３】従来の人体検知器８は取付ベース８１４に
て天井に設置され、監視エリア９から発せられる赤外線
の受光量の変化を監視している。同図に示すように、人
体検知器８は、監視エリア９から入射される赤外線を検
出する赤外線検出素子８１１、赤外線検出素子８１１か
らの出力に基づき人体の有無を判断する判断回路や検知
信号の出力回路等を実現するプリント基盤８１３、監視
エリア９を設定するためのミラー８１２、そして、これ
ら人体検知手段８１４をほこりや外力から保護のための
カバー８２から構成されている。なお、本例では、天井
設置のミラー方式の人体検知器８を示しているが、壁面
に設置されるタイプやフレネルレンズタイプもある。フ
レネルレンズにより赤外線を集光するタイプのものであ
れば、カバー８２にフレネルレンズが設けられることと
なる。The conventional human body detector 8 is installed on the ceiling by a mounting base 814 and monitors changes in the amount of received infrared rays emitted from the monitoring area 9. As shown in the figure, the human body detector 8 includes an infrared detection element 811 for detecting infrared rays incident from the monitoring area 9 and a determination circuit for determining the presence or absence of a human body based on the output from the infrared detection element 811 and a detection signal. A print substrate 813 that realizes an output circuit and the like, a mirror 812 for setting the monitoring area 9, and a cover 82 for protecting the human body detecting means 814 from dust and external force. In this example, the mirror-type human body detector 8 installed on the ceiling is shown, but there are a type installed on the wall surface and a Fresnel lens type. If the infrared ray is collected by a Fresnel lens, the cover 82 will be provided with a Fresnel lens.
【０００４】次に、このように構成された人体検知器８
の動作について説明する。いま、監視エリア９に人が入
ると、人が放射する赤外線がカバー８２を透過し、ミラ
ー８１２に反射され赤外線検出素子８１１にて受光され
る。そして、赤外線検出素子８１１から出力される該赤
外線の受光量に基づき、プリント基盤８１３に形成され
た判断回路にて人の有無が判断される。人がいると判断
すると、プリント基盤８１３上に形成された出力回路か
ら図示しない警報ブザーの鳴動信号や図示しない人体検
知器８の状態を監視しているコントローラへ出力する。
このようにして、監視エリア９内に人がいることを検出
していた。Next, the human body detector 8 constructed in this way
The operation of will be described. Now, when a person enters the monitoring area 9, infrared rays emitted by the person pass through the cover 82, are reflected by the mirror 812, and are received by the infrared detection element 811. Then, based on the amount of received infrared rays output from the infrared detection element 811, the determination circuit formed on the printed board 813 determines the presence or absence of a person. When it is determined that there is a person, the output circuit formed on the printed board 813 outputs the ringing signal of an alarm buzzer (not shown) and the state of the human body detector 8 (not shown) to the controller that monitors the state.
In this way, it is detected that there is a person in the monitoring area 9.
【０００５】[0005]
【発明が解決しようとする課題】しかし、従来の人体検
知器８は、赤外線を透過しない遮蔽物にてカバー８２を
覆うと、監視エリア９から入射される赤外線が赤外線検
出素子８１１に届かなくなるため、監視エリア９内に人
がいても検出できない場合があった。However, in the conventional human body detector 8, if the cover 82 is covered with a shield that does not transmit infrared rays, the infrared rays incident from the monitoring area 9 will not reach the infrared detecting element 811. In some cases, even if there is a person in the monitoring area 9, it cannot be detected.
【０００６】この場合、前記遮蔽物が人体検知器８のカ
バー８２と外観上大きく異なれば、設置された遮蔽物が
視認により容易に発見できる。一方、カバー８２に外観
上類似した形状であれば、視認により遮蔽物の発見が困
難となるという課題があった。In this case, if the shield is significantly different in appearance from the cover 82 of the human body detector 8, the installed shield can be easily found by visual inspection. On the other hand, if the shape of the cover 82 is similar to that of the cover 82, there is a problem that it is difficult to visually detect the shield.
【０００７】そこで、本発明の目的は、人体検知器のカ
バー近傍に遮蔽物を容易に設置できない人体検知器を提
供することにある。Therefore, an object of the present invention is to provide a human body detector in which a shield cannot be easily installed near the cover of the human body detector.
【０００８】[0008]
【課題を解決するための手段】人体から放射される赤外
線を検出する人体検知手段と、該人体検知手段を保護す
るカバーと、前記カバーに人体検知手段への赤外線の入
射を遮蔽する遮蔽物を設置する妨害工作から保護するた
めに該カバーの前方に配設された保護部材とを具備する
ことを特徴とした人体検知器を提供する。これにより、
利用者が視認できない程度に類似した遮蔽物をカバーの
近傍に設置しようとしても、保護部材が物理的な妨げと
なり遮蔽物を設置できなくなる。A human body detecting means for detecting infrared rays emitted from a human body, a cover for protecting the human body detecting means, and a shield for blocking the infrared ray incident on the human body detecting means on the cover. Provided is a human body detector, comprising: a protection member disposed in front of the cover to protect it from an interfering work to be installed. This allows
Even if an attempt is made to install a shield similar to the one invisible to the user near the cover, the protective member physically obstructs the shield.
【０００９】また、保護部材は導電性を有しており、保
護部材に流れる電流を検出する手段を接続可能とするこ
とにより、保護部材を切断され保護部材に電流が流れな
くなるのを検出可能にできる。Further, since the protective member has conductivity, and means for detecting the current flowing through the protective member can be connected, it is possible to detect that the protective member is cut and no current flows through the protective member. it can.
【００１０】更に、保護部材は脆性を有しており、変形
しにくく折れ易くなっている。これにより、保護部材を
変形させて、遮蔽物を設置しようとすると、保護部材は
外力により容易に折れ、その結果導電材も切断されるの
で、遮蔽物の設置行為を検出可能となる。例えば、保護
部材をアクリル材、ベークライト材、ガラス材などの脆
性材に導電性の皮膜することにより、変形せず折れて遮
蔽物を設置しようとしたことを検出できる。なお、脆性
材以外の材料にて実現する場合は、外力が加わると折れ
易いように、保護部材に切り口を設けることにより脆性
を実現できる。Further, the protective member has brittleness and is hard to be deformed and easily broken. As a result, when the protective member is deformed to install the shield, the protective member is easily broken by an external force, and as a result, the conductive material is also cut, the act of installing the shield can be detected. For example, by applying a conductive film to a brittle material such as an acrylic material, a bakelite material, or a glass material as the protective member, it is possible to detect that it is broken without being deformed and an attempt is made to install the shield. When the material other than the brittle material is used, the brittleness can be realized by providing a cut portion in the protective member so that the material is easily broken when an external force is applied.
【００１１】[0011]
【発明の実施の形態】以下、本発明の実施の形態を図１
〜図３を参照し説明する。図１は、人体検知器の外観図
を示す。同図において、人体検知器１は、天井等に設置
するための取付ベース２と、監視エリアから入射される
赤外線を検出する赤外線検出素子、該赤外線検出素子か
らの出力に基づき人体の有無を判断する判断回路や検知
信号の出力回路等を実現するプリント基盤、監視エリア
を設定するためのミラー等にて構成される人体検知手段
３、該人体検知手段３をほこりや外力から保護のための
カバー４、そして、該カバー４への遮蔽物の設置等の妨
害工作設置から該カバー４を保護する保護部材５から構
成されている。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIG.
~ It demonstrates with reference to FIG. FIG. 1 shows an external view of a human body detector. In the figure, a human body detector 1 is a mounting base 2 for installation on a ceiling or the like, an infrared detection element for detecting infrared rays incident from a monitoring area, and the presence or absence of a human body is determined based on the output from the infrared detection element. Printed circuit board for realizing a judgment circuit, a detection signal output circuit, etc., a human body detection unit 3 including a mirror for setting a monitoring area, and a cover for protecting the human body detection unit 3 from dust and external force. 4 and a protection member 5 that protects the cover 4 from interfering work installation such as installation of a shield on the cover 4.
【００１２】保護部材５は、心材５１の端部が取付ベー
ス２にビス止めにより固定設置されており、リード線５
４が図示しないプリント基盤に接続されている。なお、
心材５１の固定設置は、これに限られるものではなく、
保護部材５がカバー３の前方に配置されるようにすれば
よい。The protective member 5 has an end portion of the core material 51 fixedly installed on the mounting base 2 by means of screws, and the lead wire 5
4 is connected to a print board (not shown). In addition,
The fixed installation of the core material 51 is not limited to this,
The protective member 5 may be arranged in front of the cover 3.
【００１３】保護部材５の構造について、図３を参照し
て説明する。同図（Ａ）は、保護部材５の断面図であ
る。保護部材５は、ＡＢＳ樹脂である心材５１と、心材
５１に銅の下地を施し銀ペーストを塗布させた導電層５
２、導電層５２の酸化等の腐食から保護する保護層５３
の３層構造となっている。The structure of the protective member 5 will be described with reference to FIG. FIG. 3A is a sectional view of the protection member 5. The protective member 5 is composed of a core material 51 made of ABS resin, and a conductive layer 5 obtained by applying a copper undercoat to the core material 51 and applying a silver paste.
2. Protective layer 53 that protects conductive layer 52 from corrosion such as oxidation
It has a three-layer structure.
【００１４】同図（Ｂ）は、保護部材の外観図である。
保護部材５の両端は、導電層５２からリード線５４が引
き出されている。このリード線５４は、後述する人体検
知回路に接続される。FIG. 1B is an external view of the protective member.
Lead wires 54 are drawn from the conductive layer 52 at both ends of the protective member 5. The lead wire 54 is connected to a human body detection circuit described later.
【００１５】同図（Ｃ）は、心材５１を示している。心
材５１は、ＡＢＳ樹脂を使用しているため、外力により
変形する。このため、切り口５１１を設け、保護部材５
に外力が加わると、変形する前に折れるようにしてい
る。すなわち、心材５１の端部が固定されており、心材
５１の中間部分に外力が加わると、切り口５１１に該外
力が集中し、その結果、保護部材５が折れるのである。FIG. 1C shows the core material 51. Since the core material 51 is made of ABS resin, it is deformed by an external force. Therefore, the cut 511 is provided to protect the protection member 5
When an external force is applied to the, it breaks before it deforms. That is, when the end portion of the core material 51 is fixed and an external force is applied to the middle portion of the core material 51, the external force concentrates on the cut 511, and as a result, the protective member 5 breaks.
【００１６】心材５１が折れると導電層５２も切断され
るので、この結果後述する人体検知回路が切断された状
態となる。切り口５１１は、保護部材５を変形させよう
とする力が最も大きくかかる箇所に設けるのが好まし
い。例えば、図示の如くリード線５４に近い箇所に設け
ると、より効果的である。When the core material 51 is broken, the conductive layer 52 is also cut. As a result, the human body detection circuit described later is cut off. It is preferable that the cut 511 is provided at a position where the largest force for deforming the protection member 5 is applied. For example, it is more effective if it is provided near the lead wire 54 as shown in the figure.
【００１７】なお、本実施の形態では、ＡＢＳ樹脂を用
いているので、切り口５１１を設け脆性を持たせている
が、アクリル材、ベークライト材、ガラス材等の脆性材
を使用すれば、切り口５１１を設けなくてもよい。In this embodiment, since the ABS resin is used, the cut 511 is provided to make it brittle. However, if a brittle material such as an acrylic material, a bakelite material, or a glass material is used, the cut 511 is formed. Need not be provided.
【００１８】なお、取付ベース２、人体検知手段３、カ
バー４については、図４に基づき説明した従来の人体検
知器８と基本的に同じであるので、説明を省略する。The mounting base 2, the human body detecting means 3 and the cover 4 are basically the same as the conventional human body detector 8 described with reference to FIG.
【００１９】次に、保護部材５の切断等を検知する原理
について図２を基に説明する。同図は、警備システムの
コントローラ６、人体検知器１、終端抵抗７にて構成さ
れる人体検知回路を示す。Next, the principle of detecting the disconnection of the protective member 5 will be described with reference to FIG. The figure shows a human body detection circuit that includes a controller 6, a human body detector 1, and a terminating resistor 7 of the security system.
【００２０】コントローラ６は、人体検知器１が人体を
検知したら図示しない警備センターへ電話回線を介して
異常通報する警備モードと、異常通報しない解除モード
を有している。そして、解除モードから警備モードに移
行するには、人体検知回路が正常状態でなければならな
い。コントローラ６での人体検知回路の状態判断は、人
体検知回路にａから所定の監視電流を出力し、該監視電
流のｂからの戻りを検出することにより行う。すなわ
ち、ｂから入力された監視電流が、第１の所定量以上の
とき人体検知、第１の所定量より低い第２の所定量以下
のとき断線または保護部材５の切断、第２の所定量と第
１の所定量の間にあるとき正常と判断するのである。な
お、第１の所定量及び第２の所定量は、監視電流の電流
値と終端抵抗７の抵抗値から定まるものである。The controller 6 has a security mode in which, when the human body detector 1 detects a human body, an abnormality is reported to a security center (not shown) via a telephone line, and a release mode in which the abnormality is not reported. Then, in order to shift from the release mode to the security mode, the human body detection circuit must be in a normal state. The state of the human body detection circuit in the controller 6 is determined by outputting a predetermined monitoring current from a to the human body detection circuit and detecting the return of the monitoring current from b. That is, when the monitoring current input from b is equal to or higher than the first predetermined amount, human body detection is performed, and when the monitoring current is equal to or lower than the second predetermined amount, which is lower than the first predetermined amount, disconnection or disconnection of the protective member 5, second predetermined amount. And the first predetermined amount, it is determined to be normal. The first predetermined amount and the second predetermined amount are determined from the current value of the monitoring current and the resistance value of the terminating resistor 7.
【００２１】人体検知器１は、監視エリアからの赤外線
の入射量を基に、人の存在を検知すると、リレー３１を
実線の状態から破線の状態に動作させる。このため、コ
ントローラ６は、ａから出力された監視電流が終端抵抗
７を経由せずｂに戻ってくるので、第１の所定量以上と
なり人体検知を判断する。なお、人体の存在を検知しな
いと、また実線の状態に戻る。When the human body detector 1 detects the presence of a person based on the incident amount of infrared rays from the monitoring area, it operates the relay 31 from the solid line state to the broken line state. For this reason, the controller 6 returns the monitoring current output from a to b without passing through the terminating resistor 7, so that the first predetermined amount or more is determined and human body detection is determined. If the presence of the human body is not detected, the state returns to the solid line.
【００２２】一方、保護部材５が切断されると、ａから
出力される監視電流がｂに戻ってこないので、コントロ
ーラ６にて保護部材５の切断または人体検知回路の切断
と判定する。この状態では、解除モードから警備モード
へのモード移行が行えない。On the other hand, when the protective member 5 is disconnected, the monitoring current output from a does not return to b, so the controller 6 determines that the protective member 5 is disconnected or the human body detection circuit is disconnected. In this state, the mode cannot be switched from the release mode to the security mode.
【００２３】次に、このように構成された人体検知器１
の作用について説明する。いま、コントローラ６が解除
モードになっているとする。悪意を持った者が、人体検
知器１にカバー３と似た形状の遮蔽物を取り付けようと
すると、保護部材５が妨げとなり、遮蔽物をカバー３の
近傍に設置できない。Next, the human body detector 1 configured as described above
The action of will be described. Now, it is assumed that the controller 6 is in the release mode. When a malicious person tries to attach a shield having a shape similar to that of the cover 3 to the human body detector 1, the protective member 5 interferes and the shield cannot be installed near the cover 3.
【００２４】また、保護部材５を切断して遮蔽物を設置
すると、コントローラ６に監視電流が戻ってこないの
で、遮蔽物の設置を検出できる。また、この状態では、
解除モードから警備モードに移行できないので、モード
を移行させたい利用者は、警備センターに連絡する。こ
の連絡を受けた警備センターでは、利用者のところに警
備員を急行させ、遮蔽物が設置された人体検知器８を新
しい人体検知器８に交換する。これにより、人体検知器
８が人を検知できる状態を常に維持でき、警備システム
の信頼性が向上する。If the protective member 5 is cut and the shield is installed, the monitoring current does not return to the controller 6, so that the installation of the shield can be detected. Also, in this state,
Since it is not possible to shift from the release mode to the security mode, the user who wants to shift the mode contacts the security center. In the security center that receives this notification, the security personnel is rushed to the user and the human body detector 8 with the shield installed is replaced with a new human body detector 8. As a result, the state in which the human body detector 8 can detect a person can always be maintained, and the reliability of the security system is improved.
【００２５】更に、心材５１に切り口５１１を設けるこ
とにより、保護部材５を変形させて遮蔽物を設置しよう
としても保護部材５は折れ、コントローラ６にて確実に
検知することができる。Further, by providing the core member 51 with the cut 511, even when the protective member 5 is deformed to install the shield, the protective member 5 is broken and can be reliably detected by the controller 6.
【００２６】本実施の形態では、保護部材５が切断され
るとモード移行できないようにことのみ説明したが、保
護部材５が切断すれば、コントローラ６にて警報ブザー
や警告表示させてもよい。In the present embodiment, it has been described only that the mode cannot be switched when the protective member 5 is cut, but if the protective member 5 is cut, the controller 6 may display an alarm buzzer or a warning.
【００２７】また、コントローラ６は保護部材５の切断
を検出すると、すぐに警備センターに電話回線を介して
異常通報するようにしてもよい。Further, the controller 6 may immediately notify the security center via the telephone line of the abnormality when detecting the disconnection of the protective member 5.
【００２８】更に、本実施の形態では、人体検知回路に
保護部材５を接続したが、人体検知器に供給する電源回
路に接続してもよいのは言うまでもない。Further, although the protection member 5 is connected to the human body detection circuit in the present embodiment, it goes without saying that it may be connected to the power supply circuit for supplying the human body detection device.
【図１】本発明に係る人体検知器の外観図FIG. 1 is an external view of a human body detector according to the present invention.
【図２】本発明に係る人体検知器の検知原理図FIG. 2 is a detection principle diagram of a human body detector according to the present invention.
【図３】保護部材の構造図FIG. 3 is a structural diagram of a protective member
【図４】従来の人体検知器の説明図FIG. 4 is an explanatory view of a conventional human body detector.
１・・・・人体検知器 ２・・・・取付ベース ３・・・・人体検知手段 ３１・・・リレー ４・・・・カバー ５・・・・保護部材 ５１・・・心材 ５１１・・切り口 ５２・・・導電層 ５３・・・保護層 ６・・・・コントローラ ７・・・・終端抵抗 ８・・・・従来の人体検知器 ８１・・・人体検知手段 ８１１・・赤外線検出素子 ８１２・・ミラー ８１３・・プリント基盤 ８１４・・取付ベース ８２・・・カバー ９・・・・監視エリア 1 ... Human body detector 2 ... Mounting base 3 ... Human body detection means 31 ... Relay 4 ... Cover 5 ... Protective member 51 ... heartwood 511 ... 52 ... Conductive layer 53 ... Protective layer 6 ... Controller 7 ... Terminal resistance 8 ... Conventional human body detector 81 ... Human body detection means 811 ··· Infrared detector 812 ... Mirror 813 ... Printing substrate 814 ... Mounting base 82 ... Cover 9 ... Monitoring area
Claims (2)
体検知手段と、該人体検知手段を保護するカバーと、人
体検知手段への赤外線の入射を遮蔽する遮蔽物を設置す
る妨害工作から保護するために該カバーの前方に設置さ
れる保護部材とを具備し、前記保護部材は、導電性を有
しており保護部材に流れる電流を検出する手段を接続可
能であることを特徴とした人体検知器。1. A human body detecting means for detecting infrared rays emitted from a human body, a cover for protecting the human body detecting means, and a shield for blocking infrared rays from entering the human body detecting means are protected from interference work. A protective member installed in front of the cover, the protective member having a conductive property.
A means for detecting the current flowing through the protective member can be connected.
Human body detector which is characterized that it is an ability.
記載の人体検知器。2. The protection member has brittleness.
The human detector described .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35582096A JP3372804B2 (en) | 1996-12-25 | 1996-12-25 | Human body detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35582096A JP3372804B2 (en) | 1996-12-25 | 1996-12-25 | Human body detector |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002265485A Division JP2003114282A (en) | 2002-09-11 | 2002-09-11 | Human body detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10188147A JPH10188147A (en) | 1998-07-21 |
| JP3372804B2 true JP3372804B2 (en) | 2003-02-04 |
Family
ID=18445920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35582096A Expired - Fee Related JP3372804B2 (en) | 1996-12-25 | 1996-12-25 | Human body detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3372804B2 (en) |
-
1996
- 1996-12-25 JP JP35582096A patent/JP3372804B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10188147A (en) | 1998-07-21 |
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