JPH0545463A - Detecting distance setting method for human body detecting apparatus - Google Patents

Detecting distance setting method for human body detecting apparatus

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Publication number
JPH0545463A
JPH0545463A JP3287418A JP28741891A JPH0545463A JP H0545463 A JPH0545463 A JP H0545463A JP 3287418 A JP3287418 A JP 3287418A JP 28741891 A JP28741891 A JP 28741891A JP H0545463 A JPH0545463 A JP H0545463A
Authority
JP
Japan
Prior art keywords
human body
distance
sensor
detecting
projector
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
Application number
JP3287418A
Other languages
Japanese (ja)
Other versions
JP2645941B2 (en
Inventor
Masaaki Nagata
雅昭 永田
Kenji Shirai
研次 白井
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.)
Inax Corp
Original Assignee
Inax Corp
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
Application filed by Inax Corp filed Critical Inax Corp
Priority to JP3287418A priority Critical patent/JP2645941B2/en
Publication of JPH0545463A publication Critical patent/JPH0545463A/en
Application granted granted Critical
Publication of JP2645941B2 publication Critical patent/JP2645941B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

PURPOSE:To set the optimum detecting distance automatically by controlling the value of a feeding current into a light projector of an infrared-ray sensor, which is operated with a pyroelectric sensor for detecting a human body, and changing the detecting distance of the sensor. CONSTITUTION:When a user approaches a toilet stool, a pyroelectric sensor detects the human body and outputs the detected signal. The light projector of an infrared-ray sensor starts the projection of the infrared rays. At this time, the current which is fed to the light projector is set at the low value. Then, the infrared rays are reflected from the human body and cast into a light receiving device. The detected signal is outputted. When the amount of the reflected amount is not sufficient, the current value, which is supplied into the light projector, is gradually increased until the detecting distance comes to have on optimum value and the light receiving device outputs the detected signal. When the light receiving device outputs the detected signal, the current value, which is supplied into the light projector, is fixed. Namely, the detecting distance is set at the optimum distance. Thus, the detecting operation of the human body is continued. In this way, it is not necessary to adjust the detecting distance of the infrared rays when the sensor is installed.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、便器の自動洗浄装置な
どに用いられる人体検知装置の最適検知距離の設定を、
自動的に行えるようにする方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention sets the optimum detection distance of a human body detection device used for an automatic toilet bowl cleaning device, etc.
It's about how to do it automatically.

【0002】[0002]

【従来の技術】小便器等に取りつけられる自動洗浄装置
は、一般に、赤外線センサーを用いた人体検知装置によ
り使用者の有無を検知し、使用者が離れたら洗浄水を自
動排水するようになされている。
2. Description of the Related Art Generally, an automatic cleaning device attached to a urinal is designed to detect the presence or absence of a user by a human body detection device using an infrared sensor and automatically drain the cleaning water when the user leaves. There is.

【0003】ところが赤外線センサーは、動作電力が大
きいため、人体検知装置に組み込んで常時動作させた場
合、その消費電気量が非常に大きくなるという欠点を持
っていた。そこで、本出願人は先に、実願昭61−41
400号において、このような不具合を解消する手段を
提案した。それは、焦電センサーで最初に人体を検知し
たのち、その出力信号に基づいて赤外線センサーを動作
させるようにしたものであって、必要時以外には赤外線
センサーへ通電しないようにしたことにより、消費電気
量の低減化を図ったものである。この場合、焦電センサ
ーは常時通電状態となるが、その動作電力は赤外線セン
サーに比べると遥かに小さいから、消費電気量はさほど
大きくならない。
However, since the infrared sensor has a large operating power, it has a drawback that when it is built into a human body detection device and constantly operated, the amount of electricity consumed becomes very large. Therefore, the present applicant previously filed Japanese Utility Model Application No. 61-41.
In No. 400, a means for solving such a problem was proposed. It detects the human body first with a pyroelectric sensor, and then operates the infrared sensor based on the output signal, so that the infrared sensor is not energized except when necessary. This is intended to reduce the amount of electricity. In this case, the pyroelectric sensor is always energized, but its operating power is much smaller than that of the infrared sensor, so the amount of electricity consumed does not increase so much.

【0004】[0004]

【発明が解決しようとする課題】前記の焦電センサーと
赤外線センサーとの組合せからなる人体検知装置は、焦
電センサーで赤外線センサーを始動させたのち、赤外線
センサーで人体の有無の確実な検知を行うものであるか
ら、赤外線センサーの検知距離の設定は極めて重要であ
る。そこで、例えば、小便器の自動洗浄装置へ取りつけ
る場合であれば、使用者の起立位置に実際に人を立た
せ、人体検知装置に設けた距離調節つまみ等を操作し
て、赤外線センサーの受光器が適正な出力をするように
投光器の出力を調節するという作業を行う。
A human body detecting device comprising a combination of a pyroelectric sensor and an infrared sensor described above is designed to detect the presence or absence of a human body with the infrared sensor after starting the infrared sensor with the pyroelectric sensor. Since this is done, it is extremely important to set the detection distance of the infrared sensor. Therefore, for example, in the case of attaching to an automatic urinal cleaning device, a person is actually standing at the standing position of the user, and the distance adjusting knob or the like provided on the human body detection device is operated so that the infrared sensor receiver is Work to adjust the output of the projector so that the output is appropriate.

【0005】しかしながら、上述した検知距離設定のた
めの作業は、大変煩雑で面倒なものである。というの
は、人体検知装置は、通常、壁面へ埋め込んだりカバー
を装着したりして、施工後に距離調節用つまみに触られ
て設定距離が変更されることがないように設定される。
けれども、赤外線センサーは、この施工後の状態におい
て人体検知動作をするものであるから、検知距離の設定
作業は、人体検知装置を壁面から着脱することを繰り返
して或いはカバーの着脱を繰り返して行わねばならな
い。依って、非常に手数がかかる。また、施工後に設定
距離の変更や再調節をする場合には、人体検知装置を壁
面から取り外すか又はカバーを取り外さなくてはなら
ず、大変手間を要する。その上、人体検知装置の取付位
置が変われば、人体検知距離の設定も当然変更しなくて
はならないから、施工現場ごとに、煩雑な検知距離の設
定作業が必要である。
However, the above-mentioned work for setting the detection distance is very complicated and troublesome. This is because the human body detection device is usually set by embedding it in a wall surface or by mounting a cover so that the set distance is not changed by being touched by the distance adjusting knob after construction.
However, since the infrared sensor performs human body detection operation after this construction, the detection distance setting work must be done by repeatedly attaching and detaching the human body detection device from the wall surface or by repeatedly attaching and detaching the cover. I won't. Therefore, it is very troublesome. Further, when the set distance is changed or readjusted after construction, it is necessary to remove the human body detection device from the wall surface or remove the cover, which is very troublesome. Moreover, if the mounting position of the human body detection device changes, the human body detection distance must be changed as a matter of course, so that a complicated detection distance setting operation is required for each construction site.

【0006】さらに、赤外線センサーから人体までの距
離が一定であっても、衣服の色によって、赤外線の反射
率が異なる。従って、反射率の低い服装の場合にも受光
器が確実に出力するようにするため、投光器の出力を高
目に調節して、検知距離を平均的な値よりも大きく設定
してある。それ故、一般的な使用態様に対しては、無駄
な電力を消費していると言わざるを得ない。
Further, even if the distance from the infrared sensor to the human body is constant, the reflectance of infrared rays varies depending on the color of clothes. Therefore, in order to ensure that the light receiver outputs even when clothes with low reflectance are output, the output of the light projector is adjusted to a high value and the detection distance is set to be larger than the average value. Therefore, it must be said that the power is wasted for a general usage.

【0007】[0007]

【課題を解決するための手段】本発明は、赤外線センサ
ーの人体検知距離の設定作業を省略することができ、し
かも最適な検知距離が得られる手段を提供するものであ
って、その特徴とするところは、焦電センサーによって
人体の存在を最初に検知し、この焦電センサーの出力信
号に基づいて赤外線センサーが動作する人体検知装置に
おいて、前記赤外線センサーの投光器へ供給される電流
値を制御することにより、赤外線センサーの検知距離を
変化させて最適距離に設定することである。
The present invention provides a means capable of omitting the work of setting the human body detection distance of an infrared sensor and obtaining an optimum detection distance, which is a feature of the invention. However, the presence of the human body is first detected by the pyroelectric sensor, and in the human body detection device in which the infrared sensor operates based on the output signal of the pyroelectric sensor, the current value supplied to the projector of the infrared sensor is controlled. Therefore, the detection distance of the infrared sensor is changed to set the optimum distance.

【0008】[0008]

【作用】本発明は、消費電力の小さい焦電センサーで、
最初に人体の存在を検知したのち、赤外線センサーを動
作させる。すなわち、始めは、前以って定められた値の
電流を投光器に供給して、この投光器から赤外線を投射
させる。従って、このときの検知距離は、予め初期設定
された所定値である。投射された赤外線は人体に反射さ
れ、反射光量が十分であれば、受光器から人体検知信号
が出力される。
The present invention is a pyroelectric sensor with low power consumption,
The infrared sensor is activated after first detecting the presence of the human body. That is, at first, a current having a predetermined value is supplied to the projector so that infrared rays are projected from the projector. Therefore, the detection distance at this time is a predetermined value that is initially set in advance. The projected infrared rays are reflected by the human body, and if the amount of reflected light is sufficient, a human body detection signal is output from the light receiver.

【0009】しかし、反射光量が十分でない場合、言い
換えると人体を検知できない場合には、投光器へ供給す
る電流値を漸増させ、受光器が人体検知信号を出力する
最適距離に至るまで、検知距離を初期設定値から延長す
る。受光器から人体検知信号が出力されたならば、投光
器へ供給する電流値を一定化して検知距離を最適距離に
固定し、以後、使用者が立ち去るまで、人体検知動作を
続行する。
However, when the amount of reflected light is not sufficient, in other words, when the human body cannot be detected, the current value supplied to the projector is gradually increased, and the detection distance is increased until the light receiver outputs the human body detection signal. Extend from the default setting. When the human body detection signal is output from the light receiver, the current value supplied to the projector is fixed to fix the detection distance to the optimum distance, and thereafter, the human body detection operation is continued until the user leaves.

【0010】使用者が立ち去って、受光器からの人体検
知信号が消失したならば、例えば洗浄水バルブの作動信
号等、所定の信号を出力する。しかるのち、赤外線セン
サーにおける人体検知距離の設定を初期状態に戻し、次
の人体検知動作を準備する。
When the user leaves and the human body detection signal from the light receiver disappears, a predetermined signal such as an operation signal of the wash water valve is output. After that, the setting of the human body detection distance in the infrared sensor is returned to the initial state, and the next human body detection operation is prepared.

【0011】[0011]

【実施例】本発明を、便器の自動洗浄装置用の人体検知
装置に応用した場合の実施例を、図1のフローチャート
及び図2のタイムチャートを用いて説明する。本発明に
係る人体検知装置は、人体の存在を最初に検知する焦電
センサーと、焦電センサーの出力に基づいて動作を開始
する赤外線センサーと共に、赤外線センサーの投光器へ
供給する電流値を増減させる電流制御回路を備えてい
る。この電流制御回路は、原則として、電流を最初に投
光器へ供給するときの初期値を設定すると共に、赤外線
センサーの受光器から人体検知信号が出力されるまで、
投光器へ供給する電流値を初期設定値から連続的又は段
階的に漸増させ、受光器から人体検知信号を受けると電
流値をその時点の値に固定し、人体が離れて受光器から
の人体検知信号が消失したならば電流の供給を停止する
ように動作するものである。なお、赤外線センサーの投
光器には、赤外線発光ダイオードなどを使用することが
できる。
DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a human body detection device for an automatic toilet bowl cleaning device will be described with reference to the flowchart of FIG. 1 and the time chart of FIG. The human body detection device according to the present invention increases or decreases the current value supplied to the projector of the infrared sensor together with the pyroelectric sensor that first detects the presence of the human body and the infrared sensor that starts operation based on the output of the pyroelectric sensor. It has a current control circuit. As a general rule, this current control circuit sets the initial value when the current is first supplied to the projector, and until the human body detection signal is output from the infrared sensor light receiver.
The current value supplied to the projector is gradually or continuously increased from the initial setting value, and when a human body detection signal is received from the light receiver, the current value is fixed to the value at that time and the human body separates and the human body is detected from the light receiver. When the signal disappears, it operates so as to stop the current supply. An infrared light emitting diode or the like can be used for the projector of the infrared sensor.

【0012】上記人体検知装置の動作状況は、以下の如
くとなる。 i)使用者が便器に近づくと、焦電センサーが人体の存
在を検知し、検知信号を出力する。 ii)焦電センサーの出力信号に基づいて、赤外線セン
サーの投光器が、赤外線の連続的又は断続的な投射を開
始する。このとき、投光器へ供給される電流値は低く設
定されている。つまり、検知距離の初期設定値は小さ
い。 iii)投光器から投射された赤外線は、人体に反射さ
れ、受光器に入射する。入射した反射光量が十分である
場合は、受光器から人体検知信号が出力される。反射光
量が不十分な場合は、検知距離が最適値に達して受光器
が人体検知信号を出力するまで、投光器に供給する電流
値を連続的又は段階的に漸増させる。 iv)受光器が人体検知信号を出力したならば、投光器
へ供給する電流値を固定して、つまり検知距離を最適距
離に設定して、人体検知動作を続行する。 v)使用者が便器から離れ、受光器からの人体検知信号
が消失したならば、洗浄水バルブを開作動させ、便器へ
洗浄水を送給する。 vi)投光器への電流供給を停止し、次の人体検知動作
に備える。
The operating conditions of the human body detecting device are as follows. i) When the user approaches the toilet bowl, the pyroelectric sensor detects the presence of the human body and outputs a detection signal. ii) On the basis of the output signal of the pyroelectric sensor, the projector of the infrared sensor starts continuous or intermittent projection of infrared rays. At this time, the current value supplied to the projector is set low. That is, the initial setting value of the detection distance is small. iii) The infrared rays projected from the light projector are reflected by the human body and enter the light receiver. When the amount of incident reflected light is sufficient, the human body detection signal is output from the light receiver. When the amount of reflected light is insufficient, the current value supplied to the projector is gradually increased continuously or stepwise until the detection distance reaches the optimum value and the light receiver outputs a human body detection signal. iv) If the light receiver outputs a human body detection signal, the current value supplied to the light projector is fixed, that is, the detection distance is set to the optimum distance, and the human body detection operation is continued. v) When the user leaves the toilet bowl and the human body detection signal from the light receiver disappears, the flush water valve is opened to feed flush water to the toilet bowl. vi) Stopping the current supply to the projector to prepare for the next human body detection operation.

【0013】本発明を便器の自動洗浄装置用の人体検知
装置に実施した場合の基本的な態様は上記のとおりであ
るが、これ以外にも種々の応用が可能である。一例をあ
げれば、使用者が便器へ接近したとき、つまり焦電セン
サーの最初の出力が有ったときに、少量の洗浄水で便器
を予備洗浄することを付加してもよい。
The present invention is applied to a human body detection device for an automatic toilet bowl cleaning apparatus, but the basic mode is as described above, but various other applications are possible. In one example, pre-cleaning the toilet bowl with a small amount of flush water may be added when the user approaches the toilet bowl, that is, when the first output of the pyroelectric sensor is present.

【0014】なお、便器に接近した者が真の使用者であ
るか否かを判定するため、次のような措置を講じておく
ことが好ましい。まず、単に便器の傍を通過するだけの
者に対しては、焦電センサーの出力信号により赤外線セ
ンサーの投光器へ電流供給が開始されたのち、供給電流
値が所定の上限に達してもなお受光器が人体検知信号を
出力しない場合、単なる通過者と判定して、人体検知動
作を中止する。
The following measures are preferably taken in order to determine whether the person who approaches the toilet bowl is a true user. First of all, for those who simply pass by the toilet bowl, after the current supply to the projector of the infrared sensor is started by the output signal of the pyroelectric sensor, even if the supply current value reaches the predetermined upper limit, the light is still received. When the container does not output the human body detection signal, it is determined that the person is a passing person and the human body detection operation is stopped.

【0015】また、便器の傍に短時間停止した者に対し
ては、投光器への供給電流値を増加させて受光器が人体
検知信号を出力したのち、再び人体検知信号が消失する
までの経過時間を、基準時間と比較し、前記経過時間が
基準時間に満たない場合は、真の使用者ではないと判定
して、赤外線センサーの人体検知を中止する。
For a person who has stopped near the toilet for a short time, the amount of current supplied to the projector is increased so that the photodetector outputs a human body detection signal, and then the human body detection signal disappears again. The time is compared with the reference time, and if the elapsed time is less than the reference time, it is determined that the user is not a true user, and the human body detection of the infrared sensor is stopped.

【0016】さらに、赤外線センサーの最適検知距離の
設定を、小さい初期設定値から漸増させるばかりでな
く、逆に初期設定値を大きくし、そこから減少させて、
つまり投光器への電流供給値を漸減させることにより、
最適検知距離を見いだすようにする方法も採用し得る。
Furthermore, the setting of the optimum detection distance of the infrared sensor is not only gradually increased from a small initial setting value, but on the contrary, the initial setting value is increased and then decreased.
In other words, by gradually decreasing the current supply value to the projector,
A method of finding the optimum detection distance can also be adopted.

【0017】その他、本発明は、便器自動洗浄装置用の
人体検知装置以外への応用も可能であり、実施の状況に
応じた適宜の変更を妨げるものではない。
In addition, the present invention can be applied to other than the human body detecting device for the automatic toilet bowl cleaning device, and does not prevent appropriate changes depending on the implementation situation.

【0018】[0018]

【発明の効果】以上説明したところから明らかなよう
に、本発明に係る検知距離設定方法を採用することによ
り、人体検知装置を設置するにあたり、赤外線センサー
の検知距離を調節する必要がなくなるので、施工作業が
きわめて簡易になる。勿論、施工現場ごとに検知距離を
設定することも全く不要である。
As is apparent from the above description, by adopting the detection distance setting method according to the present invention, it becomes unnecessary to adjust the detection distance of the infrared sensor when installing the human body detection device. The construction work is extremely simple. Of course, it is completely unnecessary to set the detection distance for each construction site.

【0019】その上、赤外線センサーの投光器への供給
電流値は、必要最小限の最適値に設定されるから、無駄
がなく、消費電力の節減がもたらされる。
Moreover, the value of the current supplied to the projector of the infrared sensor is set to the minimum necessary optimum value, so that there is no waste and power consumption is reduced.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明を、便器の自動洗浄装置用の人体検知装
置に応用した実施例の動作状況を示すフローチャートで
ある。
FIG. 1 is a flow chart showing an operation state of an embodiment in which the present invention is applied to a human body detection device for an automatic toilet bowl cleaning device.

【図2】本発明を、便器の自動洗浄装置用の人体検知装
置に応用した場合の実施例における焦電センサー,投光
器,受光器,洗浄バルブの出力波形を示すタイムチャー
トである。
FIG. 2 is a time chart showing output waveforms of a pyroelectric sensor, a light projector, a light receiver, and a cleaning valve in an embodiment when the present invention is applied to a human body detection device for an automatic toilet bowl cleaning device.

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 焦電センサーによって人体の存在を最初
に検知し、この焦電センサーの出力信号に基づいて赤外
線センサーが動作する人体検知装置において、前記赤外
線センサーの投光器へ供給される電流値を制御すること
により、赤外線センサーの検知距離を変化させて最適距
離にすることを特徴とする人体検知装置の検知距離設定
方法。
1. In a human body detection device in which the presence of a human body is first detected by a pyroelectric sensor and an infrared sensor operates based on an output signal of the pyroelectric sensor, a current value supplied to a projector of the infrared sensor is determined. A detection distance setting method for a human body detection device, characterized in that the detection distance of an infrared sensor is changed to an optimum distance by controlling.
JP3287418A 1991-08-09 1991-08-09 Setting method of detection distance of human body detection device Expired - Lifetime JP2645941B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105819130A (en) * 2016-05-03 2016-08-03 珠海格力电器股份有限公司 Control method for intelligent environment-friendly bin and intelligent environment-friendly bin

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62154070U (en) * 1986-03-20 1987-09-30
JPH0295885U (en) * 1989-09-22 1990-07-31

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62154070U (en) * 1986-03-20 1987-09-30
JPH0295885U (en) * 1989-09-22 1990-07-31

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105819130A (en) * 2016-05-03 2016-08-03 珠海格力电器股份有限公司 Control method for intelligent environment-friendly bin and intelligent environment-friendly bin

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