JPH03123885A - Passive type infrared detecting device - Google Patents
Passive type infrared detecting deviceInfo
- Publication number
- JPH03123885A JPH03123885A JP1262661A JP26266189A JPH03123885A JP H03123885 A JPH03123885 A JP H03123885A JP 1262661 A JP1262661 A JP 1262661A JP 26266189 A JP26266189 A JP 26266189A JP H03123885 A JPH03123885 A JP H03123885A
- Authority
- JP
- Japan
- Prior art keywords
- pairs
- elements
- pyroelectric
- pair
- axis
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims abstract description 11
- 230000035945 sensitivity Effects 0.000 claims abstract description 5
- 239000002131 composite material Substances 0.000 claims description 5
- 230000005669 field effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Radiation Pyrometers (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は受動型赤外線検知装置、特に新規な配列方式を
採用した焦電型赤外線検出器を使用した全方向ツインセ
ンサーシステムに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a passive infrared sensing device, and more particularly to an omnidirectional twin sensor system using a pyroelectric infrared detector employing a novel arrangement method.
［Ｄｌ来の技術］
従来、焦電型赤外線検出器としては、２素子型のものが
主流とな、っていたが、出願人が先に出願した特願昭５
７−９６６３３号や、特願昭５７−２０４４１４号に開
示されているように、検出しようとする移動物体のＮ実
な検出を目的に各種の構成が考えられ、実用化されてき
た。[Technology from Dl] Traditionally, two-element type pyroelectric infrared detectors were the mainstream, but a patent application filed by the applicant in 1973
As disclosed in Japanese Patent Application No. 7-96633 and Japanese Patent Application No. 57-204414, various configurations have been devised and put into practical use for the purpose of accurate detection of moving objects to be detected.
［発明が解決しようとする間趙点］
特願昭５７−２０４４１４ ｒ全方向防犯用ツインセン
サーシステム」に示された発明では、厳密には、ある特
定の方向に移動する物体による出力が充分に得られない
という問題点があった。[To be solved by the invention] In the invention disclosed in Japanese Patent Application No. 57-204414 r Omnidirectional Security Twin Sensor System, strictly speaking, the output from an object moving in a particular direction is sufficient. There was a problem that I couldn't get it.
［問題点を解決するための手段］
本発明は、全方向ツインセンサーシステムにおける前述
の欠点を克服するために、４対の焦電素子を用いて、第
１の２Ｎの素子配列方向と、第２の２対の素子配列方向
とを直交させ、各素子の形状をどの方向に物体が移動し
ても検出信号が得られるようにし、またそれらの極性も
最適な配列となるようにしたものである。[Means for Solving the Problems] In order to overcome the above-mentioned drawbacks in the omnidirectional twin sensor system, the present invention uses four pairs of pyroelectric elements to The arrangement directions of the two pairs of elements (2) are orthogonal to each other, and the shape of each element is such that a detection signal can be obtained no matter which direction the object moves, and the polarities of the elements are arranged in an optimal manner. be.
［作用］
これにより、どの方向に物体が移動しても４対のうち少
なくとも２対以上の素子対から信号出力を得ることがで
き、 １素子タイプの焦電素子と同じ様に、方向による
構出感度のむらをなくすことができ、２素子タイプ以上
の安定性も合わせて備えることができる。[Function] As a result, signal output can be obtained from at least two or more of the four pairs of elements no matter which direction the object moves, and like the one-element type pyroelectric element, the structure depends on the direction. It is possible to eliminate unevenness in output sensitivity, and it also has the stability of a two-element type or more.
［実施例］
第１図は、本発明の全方向のセンサーシステムの焦電型
赤外線検出器の感受電極部の代表的配列の実施例を示し
たものである。[Example] FIG. 1 shows an example of a typical arrangement of the sensing electrode portion of a pyroelectric infrared detector of an omnidirectional sensor system of the present invention.
図中のａとす、ｃとｄ−ｅとｆ、ｇとｈがそれぞれ対と
なっており、ａとす、 ｃとｄの２対をＸ軸方向に、
ｅとｆ、ｇとｈの２対をＹ軸方向に並べである。入射エ
ネルギーの増加に対してプラスとマイナスのどちらか信
号を出力させるかという極性に関しては、 ａ 、ｄ
、ｆ 、ｇがマイナス、 ｂ 、ｃ 、ｅ 、ｈがプラ
スとしている。これらの４対の焦電素子の電気的接続を
示したのが第２図である０図中ａとｂの１対とＣとｄの
１対は並列に接続しであるが２対（４素子）を直列に接
続しても同じ効果が得られる。このことはｅとｆの１対
とｇとｈの１対についても同様である。第３図は、本発
明の赤外線検出器の断面を示したものである。In the figure, a, c, de, e and f, and g and h are pairs, respectively, and the two pairs of a, c and d are in the X-axis direction,
Two pairs, e and f, and g and h, are arranged in the Y-axis direction. Regarding the polarity of whether to output a positive or negative signal in response to an increase in incident energy, a, d
, f, and g are negative, and b, c, e, and h are positive. Figure 2 shows the electrical connections of these four pairs of pyroelectric elements. In Figure 0, one pair a and b and one pair C and d are connected in parallel, but two pairs (4 The same effect can be obtained by connecting the elements in series. This also applies to one pair of e and f and one pair of g and h. FIG. 3 shows a cross section of the infrared detector of the present invention.
矢印方向に分極処理された焦電体１の上に電極（ａ、ｂ
、ｃ、ｄ）を形成し、電界効果トランジスタ２等ととも
に、外装ケース５内に収納されている。Electrodes (a, b
, c, d), and is housed in an exterior case 5 together with the field effect transistor 2 and the like.
外部への出力はリード４を経て行なわれ、赤外線エネル
ギーは窓３より入射する。４対の焦電素子はほぼ同じ感
度であるため、赤外線検出素子全体に同時にエネルギー
入射があっても出力は出ない。Output to the outside is performed through a lead 4, and infrared energy enters through a window 3. Since the four pairs of pyroelectric elements have approximately the same sensitivity, no output is produced even if energy is incident on all the infrared detection elements at the same time.
赤外線集光光学系（図示せず）の焦点にこの焦電撃赤外
線検出器を配設し、４対の検出軸を形成することにより
、遠方の物体の移動を検出できるが、感受電極上のＸ軸
、Ｙ軸方向はもとより、どの方向に物体が移動しても焦
電素子ａ 、ｂ 、ｃ 、ｄのアナログ合成出力Ａと焦
電素子ｅ、ｆ、ｇ、ｈのアナログ合成出力Ｂは得られる
ことになる。これらの出力を受けて、たとえばＫ（｜Ａ
＋Ｂｌ −Ｉ Ａ−Ｂｌ ）（Ｋは定数）の演箕を行な
うことにより、確実な移動物体の検出が可能となる。感
受電極部の形状は、第１図に示す様な点０を中心とする
同心円に沿って分割した形に限らず、軸方向の長さと軸
方向に対する幅が異なうた形の電極同志を対とする構成
とすれば他の形でもよい、実施例に示した形は、限られ
た焦電体の面積を有効に利用し、なおかつ素子間の熱的
クロストークを最小限に抑えた結果として、採用したも
のである。By placing this pyroelectric infrared detector at the focal point of an infrared focusing optical system (not shown) and forming four pairs of detection axes, it is possible to detect the movement of a distant object. Regardless of the direction in which the object moves, including the axial and Y-axis directions, the analog composite output A of the pyroelectric elements a, b, c, and d and the analog composite output B of the pyroelectric elements e, f, g, and h are obtained. It will be done. In response to these outputs, for example, K(|A
+Bl -IA-Bl ) (K is a constant), it becomes possible to reliably detect a moving object. The shape of the sensing electrode part is not limited to the shape divided along concentric circles centered at point 0 as shown in Figure 1, but it can also be formed by pairing electrodes in the shape of a song with different axial lengths and widths. Other shapes may be used as long as the configuration is such that the shape shown in the example effectively utilizes the limited area of the pyroelectric material and minimizes thermal crosstalk between elements. This is what was adopted.
［発明の効果］
以上述べたように本発明によれば、従来のシングルタイ
プの焦電型赤外線を使用する時と同等の方向性のない検
出感度特性を得られるため、受動型赤外線検知装置の光
学系が簡略化され、また、広範囲の検出軸を容易に設定
できるようになった。[Effects of the Invention] As described above, according to the present invention, it is possible to obtain the same non-directional detection sensitivity characteristics as when using a conventional single-type pyroelectric infrared ray, so that the passive infrared detection device is improved. The optical system has been simplified, and a wide range of detection axes can now be easily set.
また、周囲温度等の影響に対しては従来のツインタイプ
の焦電型赤外線検出器以上に強くなった。It is also more resistant to the effects of ambient temperature and other factors than conventional twin-type pyroelectric infrared detectors.
これにより受動型赤外線検知装置の１台当りの警戒範囲
の拡大と安定性の増大に多大な効果を発揮するものであ
る。This has a great effect on expanding the warning range and increasing the stability of each passive infrared detection device.
第１図は本発明の焦電型赤外線検出器の感受電極配置図
であり、第２図はその電気的な接続図である。第３図は
その断面図である。FIG. 1 is a layout diagram of sensing electrodes of a pyroelectric infrared detector according to the present invention, and FIG. 2 is an electrical connection diagram thereof. FIG. 3 is a sectional view thereof.
Claims (3)
素子を備え、各２対の焦電素子を互いに直交するＸ軸と
Ｙ軸上に並べ、各素子の感度は等しく、Ｘ軸とＹ軸の交
点Ｏに近い４つの素子の軸方向に対する幅は点Ｏから遠
い位置の素子の幅より小さくし、各素子の形状及び極性
は点Ｏを中心とした点対称としかつ同心円上の隣の素子
の極性は互いに逆極性となるようにな配列としたことを
特徴とする焦電型赤外線検出器。(1) Equipped with at least four pairs of pyroelectric elements electrically connected in series, each two pairs of pyroelectric elements are arranged on the X-axis and Y-axis, which are perpendicular to each other, and the sensitivity of each element is equal, and the X-axis The width in the axial direction of the four elements near the intersection O of the A pyroelectric infrared detector characterized in that the polarities of adjacent elements are arranged so that they are opposite to each other.
電界効果トランジスタ等の増幅素子を持ち、各２対独立
した検出出力が出せることを特徴とする特許請求の範囲
第１項記載の焦電型赤外線検出器。(2) The four pairs of pyroelectric elements each have an amplifying element such as a field effect transistor for each two pairs, and each two pairs can output independent detection outputs. The described pyroelectric infrared detector.
と、この焦電型赤外線検出器のＸ軸上に並べた２対の焦
電素子のアナログ合成出力Ａと、Ｙ軸上に並べた２対の
焦電素子アナログ合成出力Ｂを受けて、Ｋ（｜Ａ＋Ｂ｜
−｜Ａ−Ｂ｜）を演算し（但しＫは定数）、この結果に
より、物体の移動を検出したことを識別するようにした
演算部とを備えたことを特徴とする受動型赤外線検知装
置(3) A pyroelectric infrared detector according to claim 2, an analog composite output A of two pairs of pyroelectric elements arranged on the X axis of this pyroelectric infrared detector, and an analog composite output A on the Y axis. After receiving the analog composite output B of two pairs of pyroelectric elements arranged in , K(|A+B|
- |A-B|) (where K is a constant), and based on this result, it is determined that movement of an object has been detected. A passive infrared detection device characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1262661A JP3008115B2 (en) | 1989-10-06 | 1989-10-06 | Passive infrared detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1262661A JP3008115B2 (en) | 1989-10-06 | 1989-10-06 | Passive infrared detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03123885A true JPH03123885A (en) | 1991-05-27 |
| JP3008115B2 JP3008115B2 (en) | 2000-02-14 |
Family
ID=17378865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1262661A Expired - Fee Related JP3008115B2 (en) | 1989-10-06 | 1989-10-06 | Passive infrared detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3008115B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016510398A (en) * | 2012-12-28 | 2016-04-07 | イリノイ トゥール ワークス インコーポレイティド | IR sensor with increased surface area |
| CN112162325A (en) * | 2020-10-19 | 2021-01-01 | 浙江工业大学 | Full-coverage human body infrared detector |
-
1989
- 1989-10-06 JP JP1262661A patent/JP3008115B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016510398A (en) * | 2012-12-28 | 2016-04-07 | イリノイ トゥール ワークス インコーポレイティド | IR sensor with increased surface area |
| CN112162325A (en) * | 2020-10-19 | 2021-01-01 | 浙江工业大学 | Full-coverage human body infrared detector |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3008115B2 (en) | 2000-02-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |