JP2003294415A - Optical curtain type safety sensor - Google Patents
Optical curtain type safety sensorInfo
- Publication number
- JP2003294415A JP2003294415A JP2002094917A JP2002094917A JP2003294415A JP 2003294415 A JP2003294415 A JP 2003294415A JP 2002094917 A JP2002094917 A JP 2002094917A JP 2002094917 A JP2002094917 A JP 2002094917A JP 2003294415 A JP2003294415 A JP 2003294415A
- Authority
- JP
- Japan
- Prior art keywords
- light
- emitter
- safety sensor
- receiver
- reflector
- 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
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Measurement Of Optical Distance (AREA)
- Burglar Alarm Systems (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、例えば危険領域へ
の侵入を検知してその危険領域に配置された機械などを
停止させるための光カーテン式安全センサに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light curtain type safety sensor for detecting intrusion into a dangerous area and stopping a machine or the like arranged in the dangerous area.
【０００２】[0002]
【従来の技術】例えば、工場内で稼動する機械が設置さ
れたエリア内に作業員が不用意に接近すると危険である
ことから、その機械が設置された危険領域への侵入を検
知してその危険領域に配置された機械を停止させるため
の光カーテン式安全センサがある。2. Description of the Related Art For example, it is dangerous for a worker to approach the area where a machine operating in a factory is installed carelessly. There are light curtain safety sensors for shutting down machines located in the hazardous area.
【０００３】この種の安全センサは、図４に示すように
必要な間隔で投受光ユニットＡ，Ｂを光軸を一致させた
状態で複数組配置し、それぞれの投受光ユニットＡ，Ｂ
間で同期を順次取りながら投光切り替え器Ｃ及び受光切
り替え器Ｄによる切り替えでもって電気的にスキャニン
グするものである。この安全センサでは、投受光ユニッ
トＡ，Ｂ間の検知エリアＬに作業員などが侵入すると、
投光器１ａ〜Ｎａから受光器１ｂ〜Ｎｂへ向かう光が侵
入者によって遮断されることになる。この侵入者による
遮光でもって危険領域への侵入を検知することができ、
この検知信号に基づいて機械を自動的に停止させるよう
にしている。In this type of safety sensor, as shown in FIG. 4, a plurality of sets of light emitting / receiving units A, B are arranged at required intervals with their optical axes aligned, and each light emitting / receiving unit A, B is arranged.
The electrical scanning is performed by switching the light-emission switch C and the light-reception switch D while sequentially synchronizing the intervals. In this safety sensor, when a worker or the like enters the detection area L between the light emitting / receiving units A and B,
The light traveling from the light projectors 1a to Na to the light receivers 1b to Nb is blocked by the intruder. It is possible to detect the invasion of the dangerous area by the shading by this intruder,
The machine is automatically stopped based on this detection signal.
【０００４】[0004]
【発明が解決しようとする課題】ところで、前述した安
全センサでは、投受光ユニットＡ，Ｂ間での遮光の有無
を検知する構造であることから以下のような問題があっ
た。The safety sensor described above has the following problems because it has a structure for detecting the presence or absence of light shielding between the light emitting / receiving units A and B.
【０００５】現場の作業員にとっては、メンテナンスや
部品の搬入などで機械をわざわざ停止させていたのでは
作業効率が悪いので、このような場合には、安全センサ
が作動せずに作業ができれば作業効率を上げることがで
きる。そのため、図５に示すように投光ユニットＡ又は
受光ユニットＢの位置を故意にずらして投受光ユニット
Ａ，Ｂの間隔を狭めて危険領域Ｘに侵入できる通路ｍを
設けることがある。このような作業員による安全センサ
の無効化により事故が多発する危険性があるため、現場
の作業員が容易に安全センサを改造できないようにする
要望がある。For the workers on site, the work efficiency is poor if the machine is purposely stopped for maintenance or carrying in of parts. In such a case, if the work can be done without operating the safety sensor, the work will be performed. You can increase efficiency. Therefore, as shown in FIG. 5, the position of the light projecting unit A or the light receiving unit B may be intentionally shifted to narrow the gap between the light projecting and receiving units A and B to provide a passage m that can enter the dangerous area X. There is a risk that accidents will occur frequently due to the invalidation of the safety sensor by such workers, and therefore there is a demand for preventing workers on the site from easily modifying the safety sensor.
【０００６】また、周辺機器の反射による光の回り込み
を防止するため、投光ユニットＡからの光の広がりを２
度以下にする規制がある。そのため、指向性のある光を
発する投光ユニットＡを使用しなければならず、その結
果、投受光ユニットＡ，Ｂの光軸合わせが困難となる。
また、装置の設置位置が高いとか、投受光ユニットＡ，
Ｂの間隔を長くした場合にも、投受光ユニットＡ，Ｂの
光軸合わせが非常に難しく、設置調整やメンテナンスに
非常に時間がかかるという問題もあった。Further, in order to prevent the light from wrapping around due to the reflection of peripheral equipment, the spread of the light from the light projecting unit A is reduced to 2
There are regulations to make it less than Therefore, it is necessary to use the light projecting unit A that emits light having directivity, and as a result, it becomes difficult to align the optical axes of the light projecting and receiving units A and B.
In addition, the installation position of the device is high, the light emitting / receiving unit A,
Even when the distance between B and B is increased, it is very difficult to align the optical axes of the light emitting and receiving units A and B, and there is a problem that installation adjustment and maintenance take a very long time.
【０００７】そこで、本発明は前記問題点に鑑みて提案
されたもので、その目的とするところは、現場の作業員
が容易に改造することができず、投受光ユニットの光軸
合わせが容易で、設置調整やメンテナンスに時間がかか
らない光カーテン式安全センサを提供することにある。Therefore, the present invention has been proposed in view of the above-mentioned problems, and the object thereof is that a worker on site cannot easily modify it, and the optical axis alignment of the light emitting / receiving unit is easy. Therefore, it is to provide a light curtain type safety sensor that does not require time for installation adjustment and maintenance.
【０００８】[0008]
【課題を解決するための手段】前記目的を達成するため
の技術的手段として、本発明は、以下の特徴を具備す
る。As a technical means for achieving the above object, the present invention has the following features.
【０００９】請求項１の発明は、投光器及び受光器から
なる投受光ユニットと、投光器からの出射光を反射して
受光器へ入射させる反射板とを所定の間隔をあけて対向
配置し、前記投受光ユニットと反射板間での投受光をス
キャニングして投受光ユニットから反射板までの離隔距
離を計測することにより、投受光ユニットと反射板間に
設定された検知エリア内への侵入の有無を監視すること
を特徴とする。According to a first aspect of the present invention, a light projecting / receiving unit including a light projecting device and a light receiving device and a reflecting plate for reflecting the light emitted from the light projecting device to enter the light receiving device are arranged to face each other with a predetermined gap, Presence or absence of intrusion into the detection area set between the light emitting and receiving unit and the reflector by scanning the light emitting and receiving unit and the reflector to measure the separation distance from the light emitting and receiving unit to the reflector. It is characterized by monitoring.
【００１０】請求項２の発明は、複数組の投受光器を一
直線上に並列配置し、投受光切り替え器により投受光器
と反射板間での投受光を電気的にスキャニングすること
を特徴とする。According to a second aspect of the present invention, a plurality of sets of light emitters / receivers are arranged in parallel on a straight line, and the light emitter / receiver switching device electrically scans the light emitter / receiver between the light emitter / receiver and the reflector. To do.
【００１１】請求項３の発明は、一組の投受光器と反射
板を対向配置し、前記投受光器の前方に配置したミラー
により投受光器と反射板間での投受光を機械的にスキャ
ニングすることを特徴とする。According to a third aspect of the present invention, a set of a light emitting / receiving device and a reflecting plate are arranged so as to face each other, and a mirror disposed in front of the light emitting / receiving device mechanically projects light between the light emitting / receiving device and the reflecting plate. Characterized by scanning.
【００１２】請求項４の発明は、前記投光器の前方に偏
向板を配置すると共に、受光器の前方に、投光器の偏向
板の偏向方向と直交するように偏向板を配置し、前記反
射板を、投光器からの出射光の偏向方向を９０°偏向す
る機能を具備した回帰反射板としたことを特徴とする。According to a fourth aspect of the present invention, a deflector plate is arranged in front of the projector, and a deflector plate is arranged in front of the light receiver so as to be orthogonal to the deflecting direction of the deflector plate of the projector and the reflector plate The regressive reflection plate has a function of deflecting the deflection direction of the light emitted from the projector by 90 °.
【００１３】[0013]
【発明の実施の形態】図１は本発明に係る光カーテン式
安全センサの第一の実施形態を示す。1 shows a first embodiment of a light curtain type safety sensor according to the present invention.
【００１４】この実施形態の安全センサは、複数組の投
受光器１ａ，１ｂ〜Ｎａ，Ｎｂを収容した投受光ユニッ
トＥを一直線上に並置し、その投受光ユニットＥに対し
て所定の間隔をあけて反射板Ｍを対向配置し、それぞれ
の投受光ユニットＥ間で同期を順次取りながら投光切り
替え器Ｃ及び受光切り替え器Ｄによる切り替えでもって
電気的にスキャニングするものである。投受光ユニット
Ｅでは、投光器１ａ〜Ｎａから発せられた光が反射板Ｍ
で反射し、その反射光が受光器１ｂ〜Ｎｂに入射され
る。この投光器１ａ〜Ｎａからの出射光と反射板Ｍで反
射した受光器１ｂ〜Ｎｂへの入射光との位相差を監視す
ることにより、投受光ユニットＥと反射板Ｍとの間の距
離を計測するようにしている。この安全センサでは、投
受光器１ａ，１ｂ〜Ｎａ，Ｎｂの配列ピッチを設定すれ
ばよいので、投光器１ａ〜Ｎａと受光器１ｂ〜Ｎｂとの
光軸合わせを必要としない。In the safety sensor of this embodiment, the light emitting / receiving units E accommodating a plurality of sets of light emitting / receiving devices 1a, 1b to Na, Nb are juxtaposed in a straight line, and a predetermined distance is set with respect to the light emitting / receiving unit E. The reflectors M are arranged facing each other, and the scanning is electrically performed by switching between the light projecting switch C and the light receiving switch D while sequentially synchronizing the respective light projecting and receiving units E. In the light projecting / receiving unit E, the light emitted from the light projectors 1a to Na is reflected by the reflecting plate M.
The reflected light is incident on the light receivers 1b to Nb. The distance between the light emitting / receiving unit E and the reflector M is measured by monitoring the phase difference between the light emitted from the light projectors 1a to Na and the light incident on the light receivers 1b to Nb reflected by the reflector M. I am trying to do it. In this safety sensor, since the arrangement pitch of the light emitters / receivers 1a, 1b to Na, Nb may be set, it is not necessary to align the optical axes of the light emitters 1a to Na and the light receivers 1b to Nb.
【００１５】この安全センサでは、投受光ユニットＥと
反射板Ｍ間に作業員などが侵入すると、投受光ユニット
Ｅから反射板Ｍまでの距離が変わることにより危険領域
への侵入を検知することができ、この検知信号に基づい
て機械を自動的に停止させるようにしている。また、投
受光ユニットＥ又は反射板Ｍの位置を故意にずらして投
受光ユニットＥと反射板Ｍの間隔を狭めて危険領域に侵
入できる通路を設けようとしても、投受光ユニットＥか
ら反射板Ｍまでの距離が変わることになり、それを検知
することができるので、現場の作業員が容易に改造する
ことができない。In this safety sensor, when an operator or the like enters between the light projecting / receiving unit E and the reflector M, the distance from the light emitting / receiving unit E to the reflector M changes to detect entry into the dangerous area. It is possible to stop the machine automatically based on this detection signal. Further, even if the position of the light emitting / receiving unit E or the reflecting plate M is intentionally shifted to narrow the gap between the light emitting / receiving unit E and the reflecting plate M to provide a passage through which the light emitting / receiving unit E can enter the dangerous area, the light emitting / receiving unit E can reflect the reflection plate M. Since the distance to will change and can be detected, it cannot be easily modified by the workers on site.
【００１６】図２は本発明の第二の実施形態を示す。こ
の実施形態の安全センサは、投光器１ａ〜Ｎａの前方に
偏向板Ｆを配置すると共に、受光器１ｂ〜Ｎｂの前方
に、前記投光器１ａ〜Ｎａの偏向板Ｆとは偏向方向が直
角となるような偏向板Ｇを配置する。一方、これら投受
光ユニットＥに対して所定の間隔をあけて回帰反射板
Ｍ’を対向配置する。この回帰反射板Ｍ’は、入射光を
その偏向方向を９０°曲げた状態で反射する機能を有す
るものである。FIG. 2 shows a second embodiment of the present invention. In the safety sensor of this embodiment, the deflection plate F is arranged in front of the projectors 1a to Na, and the deflection direction is perpendicular to the deflection plate F of the projectors 1a to Na in front of the light receivers 1b to Nb. A deflecting plate G is arranged. On the other hand, a retroreflective plate M ′ is arranged so as to face the light projecting / receiving unit E at a predetermined interval. The retroreflective plate M'has a function of reflecting incident light in a state in which its deflection direction is bent by 90 °.
【００１７】この安全センサでは、投受光ユニットＥと
回帰反射板Ｍ’間に作業員などが侵入すると、投受光ユ
ニットＥから回帰反射板Ｍ’までの距離が変わることに
より危険領域への侵入を検知することができ、この検知
信号に基づいて機械を自動的に停止させる。この時、投
光器１ａ〜Ｎａから偏向板Ｆを介して出射された光は、
回帰反射板Ｍ’で９０°偏向されるため、その９０°偏
向された反射光は、偏向板Ｇを介して受光器１ｂ〜Ｎｂ
に入射して受光される。これに対して、回帰反射板Ｍ’
以外の物体で反射した光であれば、投光器１ａ〜Ｎａか
らの光が偏向されずにそのまま偏向板Ｇに入射するので
受光器１ｂ〜Ｎｂでは受光されない。また、投受光ユニ
ットＥ又は回帰反射板Ｍ’の位置を故意にずらして投受
光ユニットＥと回帰反射板Ｍ’の間隔を狭めて危険領域
に侵入できる通路を設けようとしても、投受光ユニット
Ｅから回帰反射板Ｍ’までの距離が変わることになり、
それを検知することができるので、現場の作業員が容易
に改造することができない。In this safety sensor, when a worker or the like enters between the light projecting / receiving unit E and the retroreflective plate M ', the distance from the light projecting / receiving unit E to the retroreflective plate M'changes to enter the dangerous area. It can be detected, and the machine is automatically stopped based on this detection signal. At this time, the light emitted from the projectors 1a to Na through the deflection plate F is
Since it is deflected by 90 ° by the regressive reflection plate M ′, the reflected light deflected by 90 ° passes through the deflection plate G and the light receivers 1 b to Nb.
Is received and received. On the other hand, the retroreflective plate M '
If the light is reflected by an object other than the above, the light from the light projectors 1a to Na is not deflected and is incident on the deflecting plate G as it is, so that it is not received by the light receivers 1b to Nb. Further, even if the position of the light projecting / receiving unit E or the retroreflective plate M ′ is intentionally shifted to narrow the gap between the light projecting / receiving unit E and the retroreflective plate M ′ so as to provide a passage through which a dangerous area can be entered, the light projecting / receiving unit E is provided. To the retroreflective plate M'will change,
Since it can be detected, it cannot be easily modified by a worker on site.
【００１８】図３は本発明の第三の実施形態を示す。こ
の実施形態の安全センサは、複数組の投受光器を並置す
る構成とした前述の実施形態と異なり、一組の投受光器
１ａ，１ｂ（第一の投受光ユニットＥ1）に対して所定
の間隔をあけて第一の反射板Ｍ1を対向配置すると共
に、これとは逆向きで、もう一組の投受光器２ａ，２ｂ
（第二の投受光ユニットＥ2）に対して所定の間隔をあ
けて第二の反射板Ｍ2を対向配置する。それぞれの投受
光ユニットＥ1，Ｅ2では、電気的にスキャニングするの
ではなく、ミラー（図示せず）を使用することにより機
械的にスキャニングすることにより検知エリアＬを設定
するようにしている。FIG. 3 shows a third embodiment of the present invention. The safety sensor of this embodiment is different from the above-described embodiment in which a plurality of sets of light emitters / receivers are arranged side by side, and a predetermined value is set for one set of light emitters / receivers 1a and 1b (first light emitter / receiver unit E 1 ). The first reflector M 1 is arranged to face each other with a space of, and in the opposite direction, another pair of light emitters / receivers 2a, 2b is arranged.
The second reflecting plate M 2 is arranged so as to face the (second light emitting / receiving unit E 2 ) at a predetermined interval. In each of the light emitting / receiving units E 1 and E 2 , the detection area L is set by mechanically scanning by using a mirror (not shown) instead of electrically scanning.
【００１９】この実施形態の安全センサにおいても、投
受光ユニットＥ1，Ｅ2と反射板Ｍ1，Ｍ2間に作業員など
が侵入すると、投受光ユニットＥ1，Ｅ2から反射板
Ｍ1，Ｍ 2までの距離が変わることにより危険領域への侵
入を検知することができ、この検知信号に基づいて機械
を自動的に停止させるようにしている。また、投受光ユ
ニットＥ1，Ｅ2又は反射板Ｍ1，Ｍ2の位置を故意にずら
して投受光ユニットＥ1，Ｅ2と反射板Ｍ1，Ｍ2の間隔を
狭めて危険領域に侵入できる通路を設けようとしても、
投受光ユニットＥ1，Ｅ2から反射板Ｍ1，Ｍ2までの距離
が変わることになり、それを検知することができるの
で、現場の作業員が容易に改造することができない。Also in the safety sensor of this embodiment,
Light receiving unit E1, E2And reflector M1, M2Workers in between
When light enters, the light emitting / receiving unit E1, E2From reflector
M1, M 2Changes to the distance to
Can be detected and the machine can be detected based on this detection signal.
Is automatically stopped. In addition,
Knit E1, E2Or reflector M1, M2Deliberately shift the position of
The light emitting / receiving unit E1, E2And reflector M1, M2The interval of
Even if you try to narrow it down to create a passage that can enter the dangerous area,
Emitter / receiver unit E1, E2To reflector M1, M2Distance to
Will change and can detect it
Therefore, it is difficult for the workers on site to modify it.
【００２０】なお、図示しないが、この第三の実施形態
の構成においても、第二の実施形態の場合と同様、投光
器１ａ，２ａの前方に偏向板Ｆを配置すると共に、受光
器１ｂ，２ｂの前方に、前記投光器１ａ，２ａの偏向板
Ｆとは偏向方向が直角となるような偏向板Ｇを配置す
る。一方、これら投受光ユニットＥ1，Ｅ2に対して所定
の間隔をあけて回帰反射板Ｍ’を対向配置するようにし
てもよい。Although not shown, also in the configuration of the third embodiment, as in the case of the second embodiment, the deflection plate F is arranged in front of the projectors 1a and 2a and the light receivers 1b and 2b. A deflecting plate G is arranged in front of the deflecting plate F so that the deflecting direction is perpendicular to the deflecting plate F of the projectors 1a and 2a. On the other hand, the retroreflective plate M ′ may be arranged so as to face the light projecting / receiving units E 1 and E 2 at a predetermined interval.
【００２１】[0021]
【発明の効果】本発明によれば、投受光ユニット又は反
射板の位置を故意にずらして投受光ユニットと反射板の
間隔を狭めて危険領域に侵入できる通路を設けようとし
ても、投受光ユニットから反射板までの距離が変わるこ
とになり、それを検知することができるので、現場の作
業員が容易に改造することができず、投受光ユニットの
光軸合わせが容易で、設置調整やメンテナンスに時間が
かからない光カーテン式安全センサを提供することがで
きる。According to the present invention, even if the position of the light emitting / receiving unit or the reflecting plate is intentionally shifted to narrow the gap between the light emitting / receiving unit and the reflecting plate to provide a passage for entering the dangerous area, the light emitting / receiving unit. Since the distance from the reflector to the reflector will change and can be detected, it will not be possible for the site worker to easily modify it, and it will be easy to align the optical axis of the light emitting and receiving unit, and to make installation adjustments and maintenance. It is possible to provide a light curtain type safety sensor that does not take much time.
【図１】本発明に係る光カーテン式安全センサの第一の
実施形態を示す概略構成図である。FIG. 1 is a schematic configuration diagram showing a first embodiment of a light curtain type safety sensor according to the present invention.
【図２】本発明に係る光カーテン式安全センサの第二の
実施形態を示す概略構成図である。FIG. 2 is a schematic configuration diagram showing a second embodiment of a light curtain type safety sensor according to the present invention.
【図３】本発明に係る光カーテン式安全センサの第三の
実施形態を示す概略構成図である。FIG. 3 is a schematic configuration diagram showing a third embodiment of a light curtain type safety sensor according to the present invention.
【図４】光カーテン式安全センサの従来例を示す概略構
成図である。FIG. 4 is a schematic configuration diagram showing a conventional example of a light curtain type safety sensor.
【図５】従来の光カーテン式安全センサでの問題点を説
明するための概略構成図である。FIG. 5 is a schematic configuration diagram for explaining problems in the conventional light curtain type safety sensor.
１ａ〜Ｎａ 投光器 １ｂ〜Ｎｂ 受光器 Ｅ 投受光ユニット Ｍ 反射板 Ｌ 検知エリア 1a-Na floodlight 1b-Nb light receiver E Light emitting / receiving unit M reflector L detection area
───────────────────────────────────────────────────── フロントページの続き (72)発明者 東 俊哉 大阪府大阪市北区曽根崎２丁目１番12号 北陽電機株式会社内 (72)発明者 佃 真一 大阪府大阪市北区曽根崎２丁目１番12号 北陽電機株式会社内 (72)発明者 嶋地 直広 大阪府大阪市北区曽根崎２丁目１番12号 北陽電機株式会社内 (72)発明者 森 利宏 大阪府大阪市北区曽根崎２丁目１番12号 北陽電機株式会社内 Ｆターム(参考） 2F065 AA06 AA19 AA20 BB05 BB15 CC16 DD06 FF23 FF31 GG14 HH13 JJ01 JJ05 JJ09 JJ15 LL12 LL32 LL62 MM12 MM22 MM28 QQ25 5C084 AA02 AA07 AA13 BB02 BB14 BB16 CC16 DD32 DD57 DD61 DD67 DD71 EE02 FF03 FF27 GG18 HH13 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Toshiya Higashi 2-1-1 Sonezaki, Kita-ku, Osaka City, Osaka Prefecture Hokuyo Electric Co., Ltd. (72) Inventor Shinichi Tsukuda 2-1-1 Sonezaki, Kita-ku, Osaka City, Osaka Prefecture Hokuyo Electric Co., Ltd. (72) Inventor Naohiro Shimaji 2-1-1 Sonezaki, Kita-ku, Osaka City, Osaka Prefecture Hokuyo Electric Co., Ltd. (72) Inventor Toshihiro Mori 2-1-1 Sonezaki, Kita-ku, Osaka City, Osaka Prefecture Hokuyo Electric Co., Ltd. F term (reference) 2F065 AA06 AA19 AA20 BB05 BB15 CC16 DD06 FF23 FF31 GG14 HH13 JJ01 JJ05 JJ09 JJ15 LL12 LL32 LL62 MM12 MM22 MM28 QQ25 5C084 AA02 AA07 AA13 BB02 BB14 BB16 CC16 DD32 DD57 DD61 DD67 DD71 EE02 FF03 FF27 GG18 HH13
Claims (4)
トと、投光器からの出射光を反射して受光器へ入射させ
る反射板とを所定の間隔をあけて対向配置し、前記投受
光ユニットと反射板間での投受光をスキャニングして投
受光ユニットから反射板までの離隔距離を計測すること
により、投受光ユニットと反射板間に設定された検知エ
リア内への侵入の有無を監視することを特徴とする光カ
ーテン式安全センサ。1. A light projecting / receiving unit including a light projecting device and a light receiving device, and a reflecting plate for reflecting light emitted from the light projecting device to be incident on the light receiving device are arranged to face each other with a predetermined space therebetween, and the light projecting / receiving device is reflected. It is possible to monitor the presence or absence of intrusion into the detection area set between the light emitting and receiving unit and the reflector by scanning the light emitting and receiving between the plates and measuring the separation distance from the light emitting and receiving unit to the reflector. A characteristic light curtain type safety sensor.
し、投受光切り替え器により投受光器と反射板間での投
受光を電気的にスキャニングすることを特徴とする請求
項１に記載の光カーテン式安全センサ。2. A plurality of sets of light-emitters and light-emitters are arranged in parallel on a straight line, and a light-emitter / light-receiver switching device electrically scans light-emitter / light-emitter between the light emitter / receiver and the reflector. Light curtain type safety sensor described.
前記投受光器の前方に配置したミラーにより投受光器と
反射板間での投受光を機械的にスキャニングすることを
特徴とする請求項１に記載の光カーテン式安全センサ。3. A set of an emitter / receiver and a reflector are arranged to face each other,
2. The light curtain type safety sensor according to claim 1, wherein a mirror disposed in front of the light emitter / receiver mechanically scans light emitter / receiver between the light emitter / receiver and the reflector.
共に、受光器の前方に、投光器の偏向板の偏向方向と直
交するように偏向板を配置し、前記反射板を、投光器か
らの出射光の偏向方向を９０°偏向する機能を具備した
回帰反射板としたことを特徴とする請求項１乃至３のい
ずれかに記載の光カーテン式安全センサ。4. A deflector plate is arranged in front of the projector, and a deflector plate is arranged in front of the light receiver so as to be orthogonal to the deflection direction of the deflector plate of the projector. The light curtain type safety sensor according to any one of claims 1 to 3, which is a regressive reflection plate having a function of deflecting the deflection direction of incident light by 90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002094917A JP3866604B2 (en) | 2002-03-29 | 2002-03-29 | Optical curtain type safety sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002094917A JP3866604B2 (en) | 2002-03-29 | 2002-03-29 | Optical curtain type safety sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003294415A true JP2003294415A (en) | 2003-10-15 |
| JP3866604B2 JP3866604B2 (en) | 2007-01-10 |
Family
ID=29238673
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002094917A Expired - Fee Related JP3866604B2 (en) | 2002-03-29 | 2002-03-29 | Optical curtain type safety sensor |
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| Country | Link |
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| JP (1) | JP3866604B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007198594A (en) * | 2006-01-24 | 2007-08-09 | Sick Ag | Monitoring device for protected area |
| JP2013235390A (en) * | 2012-05-08 | 2013-11-21 | Atsumi Electric Co Ltd | Range-finding type security sensor |
| CN104075657A (en) * | 2014-06-11 | 2014-10-01 | 洞头默克蒂森工业自动化有限公司 | High-precision measurement light curtain based on analog quantity measurement receiving tube |
| CN110058321A (en) * | 2018-01-17 | 2019-07-26 | 上海东冠纸业有限公司 | A kind of light curtain safety in production device of paper machine |
| USD1037522S1 (en) | 2022-11-30 | 2024-07-30 | Eaton Intelligent Power Limited | Floodlight |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105717550A (en) * | 2016-03-23 | 2016-06-29 | 中山市美捷时包装制品有限公司 | Safe light curtain equipment capable of simultaneously protecting multiple faces |
-
2002
- 2002-03-29 JP JP2002094917A patent/JP3866604B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007198594A (en) * | 2006-01-24 | 2007-08-09 | Sick Ag | Monitoring device for protected area |
| JP2013235390A (en) * | 2012-05-08 | 2013-11-21 | Atsumi Electric Co Ltd | Range-finding type security sensor |
| CN104075657A (en) * | 2014-06-11 | 2014-10-01 | 洞头默克蒂森工业自动化有限公司 | High-precision measurement light curtain based on analog quantity measurement receiving tube |
| CN104075657B (en) * | 2014-06-11 | 2015-10-28 | 洞头默克蒂森工业自动化有限公司 | A kind of high-acruracy survey light curtain based on analog measurement receiving tube |
| CN110058321A (en) * | 2018-01-17 | 2019-07-26 | 上海东冠纸业有限公司 | A kind of light curtain safety in production device of paper machine |
| USD1037522S1 (en) | 2022-11-30 | 2024-07-30 | Eaton Intelligent Power Limited | Floodlight |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3866604B2 (en) | 2007-01-10 |
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