JPH089466B2 - Elevator door controls - Google Patents
Elevator door controlsInfo
- Publication number
- JPH089466B2 JPH089466B2 JP21577590A JP21577590A JPH089466B2 JP H089466 B2 JPH089466 B2 JP H089466B2 JP 21577590 A JP21577590 A JP 21577590A JP 21577590 A JP21577590 A JP 21577590A JP H089466 B2 JPH089466 B2 JP H089466B2
- Authority
- JP
- Japan
- Prior art keywords
- amplifier
- output
- door
- infrared sensor
- amplification factor
- 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 - Lifetime
Links
Landscapes
- Elevator Door Apparatuses (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ この発明は赤外線センサを用いてエレベーターの戸の
開閉を制御する装置に関するものである。Description: [Industrial application] The present invention relates to a device for controlling opening and closing of an elevator door using an infrared sensor.
［従来の技術］ 従来、例えば実公昭56−47186号公報に示されるよう
に、エレベーターの出入口に光線を通し、この光線が乗
客等によって遮断されると、戸閉を阻止して、戸が乗客
等に衝突することを防止することが行われている。ま
た、第３図に示すように、赤外線センサを用いて乗客を
検出して、戸を制御するものも提案されている。[Prior Art] Conventionally, as disclosed in, for example, Japanese Utility Model Publication No. 56-47186, when a light beam is passed through an entrance / exit of an elevator and the light beam is blocked by a passenger or the like, the door is closed and the door is closed Etc. are being prevented. Further, as shown in FIG. 3, there has been proposed a device which controls passengers by detecting passengers using an infrared sensor.
図中、（１）は乗客の発生する熱を検出する赤外線セ
ンサ、（２）は赤外線センサ（１）に接続された増幅
器、（３）は増幅器（２）に接続され戸の位置に対応し
て増幅器（２）の出力レベルを監視し、これが大である
と戸開指令信号を発生する検出レベル判定回路である。In the figure, (1) is an infrared sensor for detecting heat generated by passengers, (2) is an amplifier connected to the infrared sensor (1), (3) is connected to the amplifier (2) and corresponds to the position of the door. It is a detection level determination circuit that monitors the output level of the amplifier (2) and generates a door opening command signal when the output level is high.
従来のエレベーターの戸の制御装置は上記のように構
成され、赤外線センサ（１）で乗客の存在が検出される
と、赤外線センサ（１）は出力を発し、増幅器（２）で
増幅される。そして、そのレベルが所定値以上になる
と、検出レベル判定回路（３）から戸開指令信号が出力
され、戸閉中の戸を反転戸開させ、乗客が戸に衝突する
ことを防止する。The conventional elevator door control device is configured as described above, and when the infrared sensor (1) detects the presence of a passenger, the infrared sensor (1) emits an output and is amplified by the amplifier (2). Then, when the level becomes equal to or higher than a predetermined value, a door opening command signal is output from the detection level determination circuit (3), the door being closed is reversed, and the passenger is prevented from colliding with the door.
赤外線センサ（１）は効率良く人体を検出できる点で
優れている。しかし、検出範囲内に人体以外の暖房器、
電光式広告スタンド等の熱源があると、戸開指令信号が
出力され続け、戸開のままになる。特に、火災の場合
に、戸が開き続けていると、乗客が煙に巻かれる機会が
増えることになる。そこで、これを防止するため、赤外
線センサ（１）の出力が一定時間以上接続したら出力を
遮断して、戸閉するようにしている。The infrared sensor (1) is excellent in that it can efficiently detect a human body. However, a heater other than the human body within the detection range,
When there is a heat source such as a lightning-type advertising stand, the door open command signal is continuously output and the door remains open. In particular, in the event of a fire, if the doors are kept open, passengers will have more chances to be caught in smoke. Therefore, in order to prevent this, when the output of the infrared sensor (1) is connected for a certain period of time or more, the output is cut off and the door is closed.
［発明が解決しようとする課題］ 上記のような従来のエレベーターの戸の制御装置で
は、赤外線センサ（１）で乗客を検出して戸開させ、赤
外線センサ（１）の出力が一定時間持続したら出力を遮
断するようにしているため、人体以外の熱源で戸開し、
かつ運転効率が低下するという問題点がある。[Problems to be Solved by the Invention] In the conventional elevator door control device as described above, the infrared sensor (1) detects a passenger to open the door, and when the output of the infrared sensor (1) continues for a certain period of time. Since it shuts off the output, it opens with a heat source other than the human body,
In addition, there is a problem that operating efficiency is reduced.
この発明は上記問題点を解決するためになされたもの
で、人体以外の熱源で誤動作して戸開することを防止で
きるようにしたエレベーターの戸の制御装置を提供する
ことを目的とする。The present invention has been made to solve the above problems, and an object of the present invention is to provide a control device for an elevator door that can prevent the door from opening due to a malfunction caused by a heat source other than the human body.
［課題を解決するための手段］ この発明に係るエレベーターの戸の制御装置は、赤外
線センサに接続されて戸を制御する第１の増幅器と、こ
の第１の増幅器よりも低い増幅率を持つ第２の増幅器を
設け、第２の増幅器の出力が所定レベル以上になると、
第１の増幅器の出力を遮断するようにしたものである。[Means for Solving the Problems] An elevator door control device according to the present invention includes a first amplifier connected to an infrared sensor to control the door, and a first amplifier having a lower amplification factor than the first amplifier. If a second amplifier is provided and the output of the second amplifier exceeds a predetermined level,
The output of the first amplifier is cut off.
［作 用］ この発明においては、戸を制御する第１の増幅器より
も低い増幅率を持つ第２の増幅器の出力が所定値レベル
以上になると、第１の増幅器の出力を遮断するようにし
たため、人体以上の赤外線を検知したときは、第１の増
幅器は不感となる。[Operation] In the present invention, the output of the first amplifier is cut off when the output of the second amplifier having a lower amplification factor than that of the first amplifier for controlling the door exceeds a predetermined value level. When the infrared ray above the human body is detected, the first amplifier becomes insensitive.
［実施例］ 第１図及び第２図はこの発明の一実施例を示す図で、
第１図はブロック回路図、第２図は出力波形図であり、
従来装置と同様の部分は同一符号で示す。[Embodiment] FIGS. 1 and 2 are views showing an embodiment of the present invention.
1 is a block circuit diagram and FIG. 2 is an output waveform diagram.
The same parts as those of the conventional device are indicated by the same reference numerals.
図中、（2a）は増幅器（２）の出力、（４）は赤外線
センサ（１）に接続され増幅器（２）よりも低い増幅率
と低周波特性を持つ増幅器で、（4a）はその出力、
（５）は増幅器（４）に接続されたレベル検出器であ
る。In the figure, (2a) is the output of the amplifier (2), (4) is an amplifier connected to the infrared sensor (1) and having a lower amplification factor and lower frequency characteristics than the amplifier (2), and (4a) is its output. ,
(5) is a level detector connected to the amplifier (4).
次に、この実施例の動作を、第２図を参照して説明す
る。Next, the operation of this embodiment will be described with reference to FIG.
増幅器（２）の出力（2a）が所定値以上になると、検
出レベル判定回路（３）から戸開指令信号が出ることは
既述のとおりである。そして、増幅器（４）の出力（4
a）が所定レベル以上になると、レベル検出器（５）が
動作し、検出レベル判定回路（３）を遮断側に動作さ
せ、戸開指令信号の発生を阻止する。As described above, when the output (2a) of the amplifier (2) exceeds a predetermined value, the detection level determination circuit (3) outputs a door opening command signal. The output of the amplifier (4) (4
When a) becomes equal to or higher than a predetermined level, the level detector (5) operates to operate the detection level determination circuit (3) to the shut-off side to prevent the door opening command signal from being generated.
すなわち、第２図（ａ）は暖房器等赤外線の強い物体
を検出した場合の出力（2a）（4a）の状態、第２図
（ｂ）は人体を検出した場合の出力（2a）（4a）の状態
を示している。第２図（ａ）の場合は、暖房器等による
赤外線センサ（１）の出力は大きいので、低増幅率の増
幅器（４）でもその出力（4a）は飽和し、高増幅率の増
幅器（２）の出力（2a）は、検出レベル判定回路（３）
で遮断され、戸開指令信号は発生しない。That is, Fig. 2 (a) shows the state of output (2a) (4a) when an infrared ray strong object such as a heater is detected, and Fig. 2 (b) shows the output (2a) (4a) when a human body is detected. ) Indicates the state. In the case of Fig. 2 (a), since the output of the infrared sensor (1) by the heater or the like is large, the output (4a) of the amplifier (4) having a low amplification factor is saturated, and the amplifier (2) having a high amplification factor (2) is saturated. ) Output (2a) is the detection level judgment circuit (3)
The door open command signal is not generated.
また、第２図（ｂ）の場合は、人体による赤外線セン
サ（１）の出力は小さいので、増幅器（４）の出力（4
a）も小さく、レベル検出器（５）は動作しない。した
がって、増幅器（２）の出力（2a）により、検出レベル
判定回路（３）が動作して、戸開指令信号が発生する。Further, in the case of FIG. 2 (b), since the output of the infrared sensor (1) by the human body is small, the output of the amplifier (4) (4
a) is also small and the level detector (5) does not work. Therefore, the detection level determination circuit (3) is operated by the output (2a) of the amplifier (2) to generate the door opening command signal.
［発明の効果］ 以上説明したとおりこの発明では、戸を制御する第１
の増幅器よりも低い増幅率を持つ第２の増幅率の出力が
所定レベル以上になると、第１の増幅器の出力を遮断す
るようにしたので、人体以外の赤外線を検知したときは
第１の増幅器は不感となり、人体以外の熱源で戸開して
運転効率が低下することを防止でき、火災時にも安全を
確保できる効果がある。[Effects of the Invention] As described above, the first aspect of the present invention controls the door.
The output of the first amplifier is cut off when the output of the second amplification factor, which has a lower amplification factor than that of the first amplifier, exceeds a predetermined level. Therefore, when infrared rays other than the human body are detected, the first amplifier is cut off. Is insensitive, and it is possible to prevent the door from being opened by a heat source other than the human body and reduce the operating efficiency, and it is possible to ensure safety even in the event of a fire.
第１図はこの発明によるエレベーターの戸の制御装置を
示すブロック回路図、第２図は第１図の出力波形図、第
３図は従来のエレベーターの戸の制御装置を示すブロッ
ク回路図である。 図中、（１）は赤外線センサ、（２）は第１の増幅器、
（2a）は同左出力、（４）は第２の増幅器、（4a）は同
左出力、（５）はレベル検出器、（３）は検出レベル判
定回路である。 なお、図中同一符号は同一又は相当部分を示す。FIG. 1 is a block circuit diagram showing an elevator door control device according to the present invention, FIG. 2 is an output waveform diagram of FIG. 1, and FIG. 3 is a block circuit diagram showing a conventional elevator door control device. . In the figure, (1) is an infrared sensor, (2) is a first amplifier,
(2a) is the same left output, (4) is the second amplifier, (4a) is the same left output, (5) is the level detector, and (3) is the detection level determination circuit. The same reference numerals in the drawings indicate the same or corresponding parts.
Claims (1)
を設け、この赤外線センサに接続された第１の増幅器の
出力により戸を制御する装置において、上記第１の増幅
器の増幅率よりも低い増幅率を持つ第２の増幅器と、こ
の第２の増幅器の出力が所定レベル以上になると上記第
１の増幅器の出力を遮断する検出レベル判定回路とを備
えたことを特徴とするエレベーターの戸の制御装置。1. A device for controlling a door by an output of a first amplifier connected to the infrared sensor provided with an infrared sensor for detecting heat generated by a passenger, wherein the amplification factor is lower than the amplification factor of the first amplifier. An elevator door, comprising: a second amplifier having an amplification factor; and a detection level determination circuit that shuts off the output of the first amplifier when the output of the second amplifier exceeds a predetermined level. Control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21577590A JPH089466B2 (en) | 1990-08-17 | 1990-08-17 | Elevator door controls |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21577590A JPH089466B2 (en) | 1990-08-17 | 1990-08-17 | Elevator door controls |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04101992A JPH04101992A (en) | 1992-04-03 |
| JPH089466B2 true JPH089466B2 (en) | 1996-01-31 |
Family
ID=16678025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21577590A Expired - Lifetime JPH089466B2 (en) | 1990-08-17 | 1990-08-17 | Elevator door controls |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH089466B2 (en) |
-
1990
- 1990-08-17 JP JP21577590A patent/JPH089466B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04101992A (en) | 1992-04-03 |
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