JPS638437B2 - - Google Patents

Info

Publication number
JPS638437B2
JPS638437B2 JP55072633A JP7263380A JPS638437B2 JP S638437 B2 JPS638437 B2 JP S638437B2 JP 55072633 A JP55072633 A JP 55072633A JP 7263380 A JP7263380 A JP 7263380A JP S638437 B2 JPS638437 B2 JP S638437B2
Authority
JP
Japan
Prior art keywords
elements
radiation
radiating
light
sensing
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
Application number
JP55072633A
Other languages
English (en)
Other versions
JPS564079A (en
Inventor
Obe Yonson Beruto
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.)
Individual
Original Assignee
Individual
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20338178&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=JPS638437(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Publication of JPS564079A publication Critical patent/JPS564079A/ja
Publication of JPS638437B2 publication Critical patent/JPS638437B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V8/00—Prospecting or detecting by optical means
    • G01V8/10—Detecting, e.g. by using light barriers
    • G01V8/20—Detecting, e.g. by using light barriers using multiple transmitters or receivers
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/70—Power-operated mechanisms for wings with automatic actuation
    • E05F15/73—Power-operated mechanisms for wings with automatic actuation responsive to movement or presence of persons or objects
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/04—Systems determining the presence of a target
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/87—Combinations of systems using electromagnetic waves other than radio waves
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/70—Power-operated mechanisms for wings with automatic actuation
    • E05F15/73—Power-operated mechanisms for wings with automatic actuation responsive to movement or presence of persons or objects
    • E05F2015/765—Power-operated mechanisms for wings with automatic actuation responsive to movement or presence of persons or objects using optical sensors
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13—Type of wing
    • E05Y2900/132—Doors
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
    • E05Y2900/516—Application of doors, windows, wings or fittings thereof for vehicles for trucks or trailers

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Remote Sensing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Geophysics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Light Receiving Elements (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)

Description

【発明の詳細な説明】 本発明は機械、自動ドア、運転車なしで走行す
る自己推進トラツクおよびこれらに類する物に対
する障害物のような物体を検知するための光電装
置に関するものである。
物体からの反射光によつて物体を検知する光電
装置は周知である。かかる光電装置の主要構成要
素は一般に、或る種の電磁放射線、通常は赤外領
域での光を放射する放射装置と、この放射線を検
知する検知装置を備えている。これら放射装置及
び検知装置は一般に光ビームを平行光束にするた
めの集光レンズ又は反射器を備えている。これら
装置では、均一な反射面に対して作用するとき、
たとえばベルトコンベア上の生産物の品目とかパ
ツケージなどの表面に印刷されたマーキングコー
ドを検知するときは満足な結果を得ることができ
る。この場合、被検物体までの距離やその反射特
性により光電装置の感度は調整されている。しか
し種々の反射特性を持つた物体の検知はきわめて
困難である。たとえば、鏡の様な反射面を持つた
物体と暗い色の織物の様な物体のように極端な場
合は全く異なつた検出範囲を与えなければならな
い。しかも光ビームが一点に集中される程この検
出範囲の差異が大きくなる傾向にある。特に、織
物のような光を放散する反射体の場合は、反射後
は光の平行性がなくなり、反射光のごく一部のみ
が検知装置に達するにすぎない。このため非常に
短かい検出距離となる。
本発明の目的は、レンズを用いることなく反射
特性の異なる物体の検出範囲の差異を減少し、満
足な検出範囲を得ることができる物体検知用光電
装置を提供することにある。
本発明ではこの目的を達成するため次の２つの
概念を用いている。
(1) 平行光や収束光ではなくむしろ発散光を放射
する複数個の被射装置を用い、それら放射装置
からの発散光を相互に重ねるようにし、事実上
被検物体の反射特性とは無関係に検出装置にお
いてほぼ等しい強度の放射線を検知できるよう
にする。但し、光がかなり放散されるのでその
強度は低い。
(2) その様な低い強度の光でも集光レンズや反射
器を用いずに満足な検出範囲を得るためには特
殊な方法を構ずる必要がある。検出範囲を決定
するパラメータは検出器の光電流であり、光電
流は光検知面の面積と光強度に依存する。そこ
で、協同作用をする複数個の光検知装置の各光
検知表面を広い範囲に渡つて分散配置して、大
部分の反射光が光検知装置に受光されるように
する。
以上の概念を実現するために、放射装置と検知
装置は検知距離が増加すると共に検知表面積を増
加するようにし、距離の増加に伴う光強度の減少
を補償するように構成される。この補償は検知距
離がほぼ検出装置の長さに等しくなるまで行わ
れ、それ以上の距離となると検知感度は急に低下
し始める。本発明によれば、所定の電磁放射線か
らなる発散ビームを放射する複数個の素子を有
し、それら素子は隣接する素子からの放射線ビー
ムが所要の最小の物体検知距離で重なり合うよう
な間隔で一列に配置され、さらに、所定の電磁放
射線を検知する複数個の素子があり、これら素子
は前記列に沿つて配置され、放射素子の任意の１
つからの電磁放射線が前記物体で反射されること
によりその物体の存在を指示するようにおのおの
が結合されている。
これらは本発明が従来の装置に比べてもつ優れ
た点の１つであるが、この他に次の利点をもつて
いる。
(イ) 光の放射および光検知表面の範囲は、深さと
幅の両方において一様で良好な走査領域を与え
るようになつている。
(ロ) 障害物に固有な反射特性の影響が減少する。
(ハ) 反射表面全体において、より大きな角度偏差
が許容される。
本発明による装置の１つの実施例は、図面から
理解できるように、一列に並んだ複数個のいわゆ
る発光ダイオードのような発光半導体素子ａと、
一列に並んだ複数個のホトトランジスタのような
光検知素子ｂとを有している。これら２種の素子
は従来の素子でもよく、そしておのおのの列の中
の各素子をジグザグ形になるように配置してもよ
い。すなわち、たとえば、一方の側が発光ダイオ
ード、他方の側がホトトランジスタとなるように
１つ置きにジグザグ配置してもよい。各発光ダイ
オードａは開き角αの発散光を放射する。この発
散光の開き角αは、隣接する発散光ビームが所定
の最小の障害物検知距離において、互いに重なる
ように定められる。各ホトトランジスタの視角β
は、隣接するホトトランジスタの視野が所定の最
小の障害物検知距離において、互いに重なるよう
に定められる。αとβは十分に大きいことが望ま
しく、約90゜またはそれ以上あると非常によい。
各発光ダイオードａは直列接続されており、そし
てパルス発生器ｃから適当な周波数のパルス状直
流電流の供給を受ける。各ホトトランジスタｂは
並列接続されており、そして増幅器ｄの入力に接
続される。ホトトランジスタからの信号は増幅器
で増幅された後整流され、そしてその後例えばリ
レーを駆動する。
すべての発光ダイオードａに同じ信号を供給す
ることにより、そしてすべてのホトトランジスタ
ｂからの信号電圧を共通の増幅器ｄに印加するこ
とにより、任意の１つのまたは複数個の発光ダイ
オードが、障害物ｅからの光反射により、任意の
１つのまたは複数個のホトトランジスタを作動さ
せることができ、したがつて、増幅器ｄを作動さ
せることができる。
本発明の１つの応用例では、前記装置が自在戸
の両側に水平に取付けられ、１方の装置は、人が
１方の側からこの自在戸に近づきそしてこの装置
の視野の中に入つた時、この自在戸を開けるため
のものである。他方の装置は自在戸の反対側に取
付けられていており、他の人や物体がその他方の
装置の視野内にあるとき、この自在戸が開かない
ようにするためのものである。
【図面の簡単な説明】
図は本発明における光放射半導体素子と光検知
素子の配列を示す説明図である。 ａ……光放射半導体素子、発光ダイオード、ｂ
……光検知素子、ホトトランジスタ、ｃ……パル
ス発生器、ｄ……増幅器。

Claims (1)

  1. 【特許請求の範囲】 １ 複数個の放射線放射素子と複数個の放射線検
    知素子とを含み、前記放射素子は、それぞれ放射
    線の発散ビームを空間の選択された領域内へ該領
    域の選択された一つの側の位置から同時に放射す
    るように配置されており、また各放射素子は拡散
    光を形成する重畳発散ビームで前記領域を集合的
    に照射し、それによつて、前記領域内の物体が前
    記複数個の放射素子から生じる拡散光で照射され
    るようになつており、また前記検知素子は、前記
    領域内の放射線反射性物体から反射される放射線
    を受けるために前記位置における前記放射素子に
    近接して配置され、また前記検知素子は重畳する
    感度パターンを有していてそれによつて前記物体
    からの反射放射線が前記検知素子によつて受け取
    られるようにしたことを特徴とする物体検知用光
    電装置。 ２ 特許請求の範囲第１項に記載の装置におい
    て、前記放射素子および前記検知素子がそれぞれ
    の列に配置され、これら２種の素子がジグザグ形
    に配置された装置。 ３ 特許請求の範囲第１項または第２項に記載の
    装置において、前記放射素子が直列接続されそし
    てパルス発生器に接続され、および前記検知素子
    が並列接続されそして共通の増幅器に接続された
    装置。 ４ 特許請求の範囲第１項から第３項までの内の
    いずれか１つに記載の装置において、前記放射素
    子が可視スペクトルの範囲外の電磁放射線を放射
    する装置。
JP7263380A 1979-05-31 1980-05-30 Photoelectric device for detecting obstacle Granted JPS564079A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7904749A SE428250B (sv) 1979-05-31 1979-05-31 Fotoelektrisk anordning for avkenning av foremal

Publications (2)

Publication Number Publication Date
JPS564079A JPS564079A (en) 1981-01-16
JPS638437B2 true JPS638437B2 (ja) 1988-02-23

Family

ID=20338178

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7263380A Granted JPS564079A (en) 1979-05-31 1980-05-30 Photoelectric device for detecting obstacle

Country Status (19)

Country Link
US (5) US4888532A (ja)
JP (1) JPS564079A (ja)
AT (1) AT385144B (ja)
AU (1) AU532660B2 (ja)
BE (1) BE883485A (ja)
BR (1) BR8003316A (ja)
CA (1) CA1167949A (ja)
CH (1) CH659521A5 (ja)
DE (1) DE3020483C2 (ja)
DK (1) DK156334C (ja)
FI (1) FI70486C (ja)
FR (1) FR2458082B1 (ja)
GB (1) GB2051356B (ja)
HK (1) HK48885A (ja)
IT (1) IT1130692B (ja)
NL (1) NL186346C (ja)
NO (1) NO151642C (ja)
SE (1) SE428250B (ja)
SG (1) SG84084G (ja)

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GB2051356A (en) 1981-01-14
FR2458082A1 (fr) 1980-12-26
DK156334C (da) 1989-12-27
NO151642B (no) 1985-01-28
JPS564079A (en) 1981-01-16
US4560912A (en) 1985-12-24
DK156334B (da) 1989-08-07
AU5884180A (en) 1980-12-04
HK48885A (en) 1985-06-28
FI801627A (fi) 1980-12-01
SE428250B (sv) 1983-06-13
AU532660B2 (en) 1983-10-06
NL186346C (nl) 1990-11-01
IT8022407A0 (it) 1980-05-29
ATA280880A (de) 1987-07-15
SE7904749L (sv) 1980-12-01
FR2458082B1 (fr) 1985-11-22
NO151642C (no) 1985-05-08
AT385144B (de) 1988-02-25
DE3020483A1 (de) 1980-12-04
BR8003316A (pt) 1980-12-30
NL186346B (nl) 1990-06-01
CH659521A5 (de) 1987-01-30
IT1130692B (it) 1986-06-18
SG84084G (en) 1985-04-26
FI70486C (fi) 1986-09-19
US4467251A (en) 1984-08-21
BE883485A (fr) 1980-09-15
US4888532A (en) 1989-12-19
NL8003055A (nl) 1980-12-02
CA1167949A (en) 1984-05-22
US4590410A (en) 1986-05-20
US5276391A (en) 1994-01-04
DK231680A (da) 1980-12-01
GB2051356B (en) 1983-05-25
DE3020483C2 (de) 1982-09-02
NO801606L (no) 1980-12-01
FI70486B (fi) 1986-03-27

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