JPH049558Y2 - - Google Patents
Info
- Publication number
- JPH049558Y2 JPH049558Y2 JP10989784U JP10989784U JPH049558Y2 JP H049558 Y2 JPH049558 Y2 JP H049558Y2 JP 10989784 U JP10989784 U JP 10989784U JP 10989784 U JP10989784 U JP 10989784U JP H049558 Y2 JPH049558 Y2 JP H049558Y2
- Authority
- JP
- Japan
- Prior art keywords
- concave mirror
- infrared
- concave
- view
- infrared detector
- 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
Links
- 238000001514 detection method Methods 0.000 claims description 26
- 150000001875 compounds Chemical class 0.000 description 5
- 230000000007 visual effect Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Burglar Alarm Systems (AREA)
Description
【考案の詳細な説明】
「産業上の利用分野」
本考案は侵入警報等に使用するデユアル形式の
受動型赤外線検知装置の構造に関するものであ
る。[Detailed Description of the Invention] "Field of Industrial Application" The present invention relates to the structure of a dual-type passive infrared detection device used for intrusion alarms and the like.
「従来の技術」
第２図は従来のデユアル形式の受動型赤外線検
知装置の要部平面図、第３図は凹面鏡の視野を示
す図である。``Prior Art'' FIG. 2 is a plan view of essential parts of a conventional dual-type passive infrared detection device, and FIG. 3 is a view showing the field of view of a concave mirror.
１はデユアル形式の赤外線検知器、２は複合凹
面鏡であり、複数設けた凹面鏡Ａ，Ｂ，Ｃ，Ｄ，
Ｅから構成されている。 1 is a dual-type infrared detector, 2 is a composite concave mirror, and multiple concave mirrors A, B, C, D,
It is composed of E.
凹面鏡Ａ〜Ｅはそれぞれの凹面鏡視野SA，
SB，SC，SD，SEからの赤外線を反射して赤外
線検知器１の検知素子ａ及びｂ上に焦点を結ぶよ
うに配置されている。 Concave mirrors A to E have respective concave mirror fields of view SA,
They are arranged so that the infrared rays from SB, SC, SD, and SE are reflected and focused on the detection elements a and b of the infrared detector 1.
検知素子ａ，ｂの出力は互いに差動的に合成さ
れ、検知素子ａ，ｂの赤外線入射に差異のある時
に出力するようになつている。 The outputs of the sensing elements a and b are differentially combined with each other, and are output when there is a difference in the incidence of infrared rays on the sensing elements a and b.
第３図に示す凹面鏡視野SA〜SEはそれぞれ検
知素子ａ，ｂを起点とする２本１対の視野から成
立つていて、この視野が感熱帯となつている。 The concave mirror visual fields SA to SE shown in FIG. 3 each consist of a pair of visual fields starting from the sensing elements a and b, and this visual field is the sensitive zone.
４は赤外線検知器１と複合凹面鏡２を含む赤外
線検知装置で、凹面鏡視野SA〜SEを人間等赤外
線源が横切れば赤外線検知装置４は赤外線を検知
して出力し、人間等の物体を感知する。 4 is an infrared detection device including an infrared detector 1 and a compound concave mirror 2. When an infrared source such as a human crosses the concave mirror field of view SA to SE, the infrared detection device 4 detects and outputs infrared rays to detect an object such as a human. .
凹面鏡Ａ〜Ｅで反射した赤外線は赤外線検知器
１に設けられた窓３より検知素子ａ，ｂに入射す
る。このため検知素子ａ，ｂの両方に入射できる
赤外線の範囲は窓３の端と検知素子ａ，ｂを結ぶ
線を境に制限される。 The infrared rays reflected by the concave mirrors A to E enter the detection elements a and b through a window 3 provided in the infrared detector 1. Therefore, the range of infrared rays that can be incident on both the detection elements a and b is limited by the line connecting the edge of the window 3 and the detection elements a and b.
第２図にて検知素子ａから凹面鏡Ａの左端に至
る直線Aaと検知素子ｂから凹面鏡Ｅの右端に至
る直線Ebがなす角度の範囲が、この赤外線検知
器１の有効検知角度である。 The effective detection angle of the infrared detector 1 is the angle range formed by the straight line Aa from the sensing element a to the left end of the concave mirror A and the straight line Eb from the sensing element b to the right end of the concave mirror E in FIG.
上記制限角度内で凹面鏡を大きくするには、赤
外線検知器１の位置を凹面鏡Ａ〜Ｅから離す、す
なわち第２図のＬを大きくすればよいがこれでは
装置全体が大きくなる欠点がある。 In order to increase the size of the concave mirror within the above-mentioned limited angle, the infrared detector 1 may be moved away from the concave mirrors A to E, that is, L in FIG. 2 may be increased, but this has the disadvantage that the entire device becomes large.
「考案が解決しようとする問題点」
装置全体特に凹面鏡と赤外線検知器１の距離Ｌ
を大きくすることなく凹面鏡Ａ〜Ｅを大きくして
赤外線検知能力を大きくしようとするものであ
る。"Problem that the invention attempts to solve" The entire device, especially the distance L between the concave mirror and the infrared detector 1
This is intended to increase the infrared detection ability by increasing the size of the concave mirrors A to E without increasing the size of the infrared rays.
「問題点を解決するための手段」
本考案はこれらの問題を解決するために、特定
方向の凹面鏡（例えば凹面鏡Ｃ）を２分割して上
記有効検知角度のそれぞれ外側に配置し両者で一
対の感熱帯を構成することにより装置を大きくす
ることなく凹面鏡を大きくして赤外線検知能力を
高める構造としたものである。"Means for Solving the Problems" In order to solve these problems, the present invention divides a concave mirror in a specific direction (for example, concave mirror C) into two parts and places them on the outside of the effective detection angle. By configuring the sensing zone, the concave mirror can be made larger without increasing the size of the device, thereby increasing the infrared detection ability.
以下図面について詳細に説明する。 The drawings will be explained in detail below.
「実施例」
第１図は本考案の実施例を示す要部平面図であ
る。"Embodiment" FIG. 1 is a plan view of the main part showing an embodiment of the present invention.
１は前述のデユアル形式の赤外線検知器で２つ
の検知素子ａ，ｂを持つている。２′は複合凹面
鏡で凹面鏡Ｃ１，A′，B′，D′，E′，Ｃ２により
構成されている。A′a，E′b，Ｉ，ｍは検知素子
ａ，ｂと赤外線検知器１の窓３の端とを結ぶ直線
であつて、直線A′a，E′b間は検知素子ａ，ｂ共
通に赤外線が入射できる範囲であり、前述した有
効検知角度である。直線A′a，Ｉ間は凹面鏡Ｃ１
から反対側の検知素子ｂのみに、直線E′b，ｍの
間は凹面鏡Ｃ２から反対側の検知素子ａのみに赤
外線が入射できる範囲であり、従来は利用されて
いなかつた。 1 is the aforementioned dual-type infrared detector having two detection elements a and b. 2' is a composite concave mirror, which is composed of concave mirrors C1, A', B', D', E', and C2. A'a, E'b, I, m are straight lines connecting the detection elements a, b and the edge of the window 3 of the infrared detector 1, and between the straight lines A'a, E'b, the detection elements a, b This is the range where infrared rays can commonly be incident, and is the effective detection angle described above. Concave mirror C1 between straight lines A'a and I
The range between the straight line E'b and m is a range in which infrared rays can be incident only on the sensing element b on the opposite side from the concave mirror C2, and has not been used in the past.
こゝで凹面鏡Ｃ１とＣ２は両者で１対の同一視
野を持つように調整され、例えば第３図の視野
SCと略同じである。又凹面鏡A′，B′，D′，E′は
凹面鏡Ａ，Ｂ，Ｄ，Ｅの視野SA，SB，SD，SE
と同じ視野を持つている。 Here, the concave mirrors C1 and C2 are adjusted so that they both have a pair of identical fields of view, for example the field of view in Figure 3.
Almost the same as SC. Also, concave mirrors A', B', D', and E' are the fields of view SA, SB, SD, and SE of concave mirrors A, B, D, and E.
have the same perspective.
直線A′aと直線E′bのなす角度が赤外線検知器
１に有効検知角度であつて第２図では５個の凹面
鏡が配置されたのに対し本実施例では４個であつ
てそれだけ個々の凹面鏡は大きくなつている。凹
面鏡Ｃ１，Ｃ２は前記有効検知角度外に配置され
ているが、それぞれ反対側の検知素子上に焦点を
結ばせることにより１対の同一視野を作り有効に
作用させることができる。 The angle formed by the straight line A'a and the straight line E'b is the effective detection angle for the infrared detector 1. In contrast to the five concave mirrors arranged in FIG. The concave mirror of is getting larger. Although the concave mirrors C1 and C2 are arranged outside the above-mentioned effective detection angle, by focusing each on the detection element on the opposite side, a pair of identical fields of view can be created and used effectively.
凹面鏡と赤外線検知器１の距離Ｌは第２図の場
合と同じであつて、装置を大きくすることなく凹
面鏡を大きくすることができる。 The distance L between the concave mirror and the infrared detector 1 is the same as in the case of FIG. 2, and the concave mirror can be made larger without increasing the size of the device.
「作用」
第３図における赤外線検知装置４に含まれる複
合凹面鏡２を第１図の複合凹面鏡２′に置きかえ
ても、同様の視野が生じる。"Operation" Even if the compound concave mirror 2 included in the infrared detecting device 4 in FIG. 3 is replaced with the compound concave mirror 2' in FIG. 1, a similar field of view is produced.
すなわち、凹面鏡視野SA〜SEの中に人体等赤
外線源が侵入すれば検知素子ａ，ｂ上の赤外線量
が変動し、赤外線検知器１はその差異に応じて出
力を生じ人体の存在や移動を検知することができ
る。 That is, if an infrared source such as a human body enters the concave mirror field of view SA to SE, the amount of infrared rays on detection elements a and b will change, and infrared detector 1 will generate an output according to the difference to detect the presence or movement of a human body. Can be detected.
「考案の効果」
以上説明したように本考案によれば特定方向の
凹面鏡を２分割して複合凹面鏡の両端に配置する
ことにより、装置を大きくすることなく凹面鏡を
大きくして赤外線検知能力を増大することができ
る。この結果赤外線検知装置を高感度にすること
が可能である。"Effect of the invention" As explained above, according to the invention, by dividing the concave mirror in a specific direction into two and placing them at both ends of the compound concave mirror, the concave mirror can be made larger without increasing the size of the device, increasing infrared detection capability. can do. As a result, it is possible to make the infrared detection device highly sensitive.
第１図は本考案の実施例を示す要部平面図、第
２図は従来のデユアル形式の受動型赤外線検知装
置、第３図は凹面鏡の視野を示す図である。
１……赤外線検知器、２，２′……複合凹面鏡、
Ａ，Ｂ，Ｃ，Ｄ，Ｅ，A′，B′，D′，E′，Ｃ１，
Ｃ２……凹面鏡、３……窓、４……赤外線検知装
置、SA，SB，SC，SD，SE……凹面鏡視野、
Aa，Eb，A′a，E′b，Ｉ，ｍ……直線。
FIG. 1 is a plan view of essential parts showing an embodiment of the present invention, FIG. 2 is a conventional dual-type passive infrared detection device, and FIG. 3 is a view showing the field of view of a concave mirror. 1...Infrared detector, 2,2'...Compound concave mirror,
A, B, C, D, E, A', B', D', E', C1,
C2...Concave mirror, 3...Window, 4...Infrared detection device, SA, SB, SC, SD, SE...Concave mirror field of view,
Aa, Eb, A'a, E'b, I, m...straight line.
Claims (1)
に対応する方向の赤外線を各凹面鏡のほぼ共通し
た焦点位置に置かれたデユアル形式の赤外線検知
器で検知する装置において、特定方向に対応する
凹面鏡を２分割して、それぞれの凹面鏡を前記赤
外線検知器の有効検知角度の外側に配置するとと
もに両者で一対の感熱帯を構成するようにしたこ
とを特徴とする受動型赤外線検知装置。 In an apparatus in which a plurality of concave mirrors with different viewing directions are provided and infrared rays in a direction corresponding to each concave mirror are detected by a dual-type infrared detector placed at a substantially common focal position of each concave mirror, two concave mirrors corresponding to a specific direction are detected. A passive infrared detection device characterized in that the concave mirrors are divided and each concave mirror is placed outside the effective detection angle of the infrared detector, and both constitute a pair of sensitive areas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10989784U JPS6126135U (en) | 1984-07-20 | 1984-07-20 | Passive infrared detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10989784U JPS6126135U (en) | 1984-07-20 | 1984-07-20 | Passive infrared detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6126135U JPS6126135U (en) | 1986-02-17 |
| JPH049558Y2 true JPH049558Y2 (en) | 1992-03-10 |
Family
ID=30669031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10989784U Granted JPS6126135U (en) | 1984-07-20 | 1984-07-20 | Passive infrared detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6126135U (en) |
-
1984
- 1984-07-20 JP JP10989784U patent/JPS6126135U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6126135U (en) | 1986-02-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0111009B1 (en) | Double-eye crime prevention sensor system | |
| EP0933623B1 (en) | Compound-eye crime prevention sensor system | |
| JPH049558Y2 (en) | ||
| US4645930A (en) | Motion detector | |
| JPH0547053B2 (en) | ||
| JP2599758B2 (en) | Moving object detection device | |
| JPH0638057B2 (en) | Optical device of heat ray detector | |
| JP3008115B2 (en) | Passive infrared detector | |
| JPH02278131A (en) | Pyroelectric-type infrared detector | |
| JP2501596Y2 (en) | Hot wire detector | |
| JPH0416236Y2 (en) | ||
| JPS6029038Y2 (en) | burglar alarm | |
| JPS6367532A (en) | Person sensor | |
| US6037593A (en) | Catoptric optical system for detecting motion of a radiant source | |
| JP2870752B2 (en) | Hot wire detector | |
| JPH0321507Y2 (en) | ||
| JP3509577B2 (en) | Passive infrared security sensor | |
| JPH0436420Y2 (en) | ||
| JP2927437B2 (en) | Human body detection device | |
| JPH0433166U (en) | ||
| JPH08145789A (en) | Pyroelectric infrared detector | |
| JPH0236098Y2 (en) | ||
| JP2854310B2 (en) | Human body detector | |
| JPS6118429Y2 (en) | ||
| JPS6224170A (en) | Heat-ray sensor |