JP2583331Y2 - Human body detector - Google Patents
Human body detectorInfo
- Publication number
- JP2583331Y2 JP2583331Y2 JP10131791U JP10131791U JP2583331Y2 JP 2583331 Y2 JP2583331 Y2 JP 2583331Y2 JP 10131791 U JP10131791 U JP 10131791U JP 10131791 U JP10131791 U JP 10131791U JP 2583331 Y2 JP2583331 Y2 JP 2583331Y2
- Authority
- JP
- Japan
- Prior art keywords
- human body
- detection
- dirt
- foreign matter
- detection window
- 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.)
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- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Burglar Alarm Systems (AREA)
Description
【考案の詳細な説明】[Detailed description of the invention]
【０００１】[0001]
【産業上の利用分野】本考案は、侵入監視領域内の放射
エネルギーの変化に基づいて人体の侵入を検知する人体
検知器に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a human body detector for detecting the intrusion of a human body based on a change in radiant energy in an intrusion monitoring area.
【０００２】[0002]
【従来の技術】例えば赤外線を利用して侵入監視領域内
の放射エネルギーを検知し、この放射エネルギーの変化
から侵入監視領域内への人体の侵入を検知する装置とし
て人体検知器が知られている。この種の人体検知器で
は、侵入監視領域内の放射エネルギーが検知窓を介して
焦電素子等により検知されるが、検知窓は時間の経過に
伴う汚れの付着により検知精度が低下したり、検知窓に
対して、不正に異物が貼付されて人体検知が途切れる虞
があるため、検知窓の状態を定期的に検知して清掃を行
なう必要があった。2. Description of the Related Art A human body detector is known as a device for detecting radiant energy in an intrusion monitoring area using, for example, infrared rays and detecting intrusion of a human body into the intrusion monitoring area from a change in the radiant energy. . In this type of human body detector, the radiant energy in the intrusion monitoring area is detected by a pyroelectric element or the like via the detection window, but the detection window has reduced detection accuracy due to adhesion of dirt over time, Since there is a possibility that the detection of the human body may be interrupted due to improper attachment of the foreign matter to the detection window, it is necessary to periodically detect the state of the detection window and perform cleaning.
【０００３】そこで、従来の人体検知器では、検知窓、
検知素子、光学系を各々２組ずつを備えて構成され、人
体検知が途切れないように光路を交互に切替えて検知窓
の汚れや異物貼付等の状態検知を行なっていた。Therefore, in a conventional human body detector, a detection window,
The detection device and the optical system are each provided with two sets, and the optical paths are alternately switched so that the detection of the human body is not interrupted, and the detection of the state of the detection window, such as dirt and adhesion of a foreign substance, is performed.
【０００４】[0004]
【考案が解決しようとする課題】しかしながら、上述し
た従来の人体検知器では、検知窓の汚れや異物貼付等の
検知を行なうにあたって、検知窓、検知素子、光学系が
各々２組ずつ必要なので、構造が複雑になり、各部品毎
に配設スペースを要し検知器全体の大型化を招くという
問題があった。そこで、本考案は上述した問題点に鑑み
てなされたものであって、その目的は、部品に要する配
設スペースを必要最小限に抑え、人体検知の動作を停止
させることなく汚れや異物等の自己診断が行なえる人体
検知器を提供することにある。However, in the above-described conventional human body detector, two sets of the detection window, the detection element, and the optical system are required for detecting the contamination of the detection window and the attachment of the foreign matter. There has been a problem that the structure becomes complicated, an arrangement space is required for each component, and the entire detector becomes large. In view of the above, the present invention has been made in view of the above-described problems, and has as its object to minimize the installation space required for parts and to prevent dirt and foreign matter without stopping the operation of human body detection. An object of the present invention is to provide a human body detector capable of performing self-diagnosis.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するた
め、本考案による人体検知器は、検知窓を介して入射さ
れる侵入監視領域内の放射エネルギーの変化を検知して
前記侵入監視領域内への人体の侵入を検知する差動型人
体検知センサと、前記差動型人体検知センサの不感知領
域に配設されエネルギーを放射する熱源と、前記熱源の
発する放射エネルギーを前記検知窓を介して受け、該検
知窓の汚れ付着や異物貼付等の有無を検知する汚れ・異
物検知センサとを具備したことを特徴としている。In order to achieve the above object, a human body detector according to the present invention detects a change in radiant energy in an intrusion monitoring area incident through a detection window and detects a change in radiant energy in the intrusion monitoring area. A differential human body detection sensor for detecting the intrusion of a human body into a human body, a heat source radiating energy disposed in a non-sensing area of the differential human body detection sensor, and radiant energy emitted by the heat source through the detection window. And a dirt / foreign matter detection sensor for detecting the presence or absence of dirt or foreign matter on the detection window.
【０００６】[0006]
【作用】差動型人体検知センサは、検知窓を介して入射
される侵入監視領域内の放射エネルギーの変化を検知し
て侵入監視領域内への人体の侵入を検知している。差動
型人体検知センサの不感知領域には、エネルギーを放射
する熱源が配設されている。汚れ・異物検知センサは、
熱源の発する放射エネルギーを検知窓を介して受け、検
知窓の汚れ付着や異物貼付等の有無を検知している。処
理手段は、汚れ・異物検知センサの検知信号のレベルの
高低に基づいて検知窓の汚れや異物等の有無を判別処理
する。The differential type human body detection sensor detects a change in radiant energy in the intrusion monitoring area that enters through the detection window, and detects intrusion of a human body into the intrusion monitoring area. A heat source that emits energy is disposed in a non-sensitive area of the differential-type human body detection sensor. Dirt / foreign matter detection sensor
The radiant energy generated by the heat source is received through the detection window, and the presence or absence of dirt or foreign matter on the detection window is detected. The processing means determines the presence or absence of dirt or foreign matter on the detection window based on the level of the detection signal of the dirt / foreign matter detection sensor.
【０００７】[0007]
【実施例】図１は本考案による人体検知器の一実施例を
示す概略構成図、図２は同検知器の平面説明図、図３は
同検知器の各部の波形図である。この実施例による人体
検知器は、侵入監視領域内の放射エネルギーの変化に基
づいて人体の侵入を検知すると同時に、検知窓の汚れや
異物貼付等の状態を自己診断している。1 is a schematic diagram showing an embodiment of a human body detector according to the present invention, FIG. 2 is an explanatory plan view of the detector, and FIG. 3 is a waveform diagram of each part of the detector. The human body detector according to this embodiment detects the intrusion of a human body based on a change in radiant energy in the intrusion monitoring area, and at the same time, performs self-diagnosis of the state of the detection window, such as dirt or sticking of foreign matter.
【０００８】検知器本体の一部を構成するフード１の先
端には検知窓２が配設されている。この検知窓２は例え
ばＳｉやポリエチレン等から形成され、人体より発せら
れる赤外線を透過させてフード１内に導いている。フー
ド１内には検知窓２と対向して集光系をなす反射鏡３が
配設されている。この反射鏡３は検知窓２を介して入射
する赤外線を集光して所定の方向に反射させている。A detection window 2 is provided at the tip of a hood 1 which forms a part of the detector main body. The detection window 2 is made of, for example, Si, polyethylene, or the like, and guides infrared rays emitted from a human body into the hood 1. In the hood 1, a reflecting mirror 3 forming a light condensing system is disposed facing the detection window 2. The reflecting mirror 3 condenses infrared light incident through the detection window 2 and reflects the infrared light in a predetermined direction.
【０００９】検知窓２と反射鏡３との間の中心線Ｌ−Ｌ
上のほぼ焦点位置には人体検知センサ４が配設されてい
る。この人体検知センサ４は反射鏡３により集光されて
反射された赤外線を検出する検出素子として例えば２個
の焦電素子４ａ，４ｂを備えて構成され、人体を検知し
ていない正常時の検知信号が人体検知のしきい値レベル
を越えないようにレベル設定されており、その時の検知
信号を後述する処理回路８に出力される。各焦電素子４
ａ，４ｂは中心線Ｌ−Ｌ上の焦点ｆの両側に等距離離れ
て平行に配設されており、反射鏡３を介して所定の侵入
監視領域Ｚ１，Ｚ２を形成している。さらに説明する
と、図２に示すように焦電素子４ａ，４ｂの幅を考慮し
て一方の焦電素子４ａの一端をｙ１、他端をｙ２とし、
他方の焦電素子４ｂの一端をｙ３、他端をｙ４とする
と、ｙ１は反射鏡３の一端及び他端で反射してｙ１’に
投影され、ｙ２は反射鏡３の一端及び他端で反射してｙ
２’に投影されることになり、結果としてｙ１’の一端
から反射鏡３を介してｙ２’の他端を結ぶエリアが焦電
素子４ａの侵入監視領域Ｚ１となる。また、同様にｙ３
は反射鏡３の一端及び他端で反射してｙ３’に投影さ
れ、ｙ４は反射鏡３の一端及び他端で反射してｙ４’に
投影され、ｙ４’の一端から反射鏡３を介してｙ３’の
他端を結ぶエリアが焦電素子４ｂの侵入監視領域Ｚ２と
なり、図中斜線で示す部分に共通監視領域Ｚ３を形成し
ている。The center line LL between the detection window 2 and the reflecting mirror 3
A human body detection sensor 4 is provided at a substantially focal position on the upper side. The human body detection sensor 4 is provided with, for example, two pyroelectric elements 4a and 4b as detection elements for detecting infrared rays condensed and reflected by the reflecting mirror 3, and detects a normal state in which no human body is detected. The level of the signal is set so as not to exceed the threshold level of the human body detection, and the detection signal at that time is output to the processing circuit 8 described later. Each pyroelectric element 4
Reference numerals a and 4b are disposed in parallel at equal distances on both sides of the focal point f on the center line LL, and form predetermined intrusion monitoring areas Z1 and Z2 via the reflecting mirror 3. More specifically, as shown in FIG. 2, one end of one pyroelectric element 4a is set to y1 and the other end is set to y2 in consideration of the widths of the pyroelectric elements 4a and 4b.
Assuming that one end of the other pyroelectric element 4b is y3 and the other end is y4, y1 is reflected at one end and the other end of the reflecting mirror 3 and is projected on y1 ', and y2 is reflected at one end and the other end of the reflecting mirror 3. Then y
As a result, an area connecting one end of y1 'to the other end of y2' via the reflecting mirror 3 becomes an intrusion monitoring area Z1 of the pyroelectric element 4a. Similarly, y3
Is reflected at one end and the other end of the reflecting mirror 3 and is projected to y3 ', y4 is reflected at one end and the other end of the reflecting mirror 3 and is projected to y4', and is reflected from one end of the y4 'via the reflecting mirror 3. An area connecting the other end of y3 'is an intrusion monitoring area Z2 of the pyroelectric element 4b, and a common monitoring area Z3 is formed in a hatched portion in the figure.
【００１０】共通監視領域Ｚ３内では放射エネルギーが
急激に変化しても２個の焦電素子４ａ，４ｂから同時に
極性の異なる略同レベルの信号が出力され、人体検知セ
ンサ４自体の検出信号は各焦電素子４ａ，４ｂの出力信
号が打ち消しあって結果的に変化しないようになってい
る不感知領域である。In the common monitoring area Z3, even if the radiation energy changes abruptly, two pyroelectric elements 4a and 4b simultaneously output signals of substantially the same level with different polarities, and the detection signal of the human body detection sensor 4 itself is This is an insensitive area in which the output signals of the pyroelectric elements 4a and 4b cancel each other and do not change as a result.
【００１１】検知窓２付近の前面で共通監視領域Ｚ３内
には熱源５が配設されている。この熱源５は例えば薄膜
ヒータからなり、電源６ａとスイッチ６ｂで構成される
駆動回路６によってオン・オフ制御されている。A heat source 5 is provided in the common monitoring area Z3 on the front surface near the detection window 2. The heat source 5 is composed of, for example, a thin-film heater, and is controlled on / off by a drive circuit 6 including a power supply 6a and a switch 6b.
【００１２】共通監視領域Ｚ３内におけるフード１と平
行な反射鏡３の中心線Ｌ−Ｌ上で人体検知センサ４の直
下には汚れ・異物検知センサ７が配設されている。この
汚れ・異物検知センサ７は１個の焦電素子７ａ等から構
成され、熱源５のオン時の汚れ、異物がない正常時の検
知信号が所定のしきい値を越えるようにそのレベル設定
が行なわれており、その時の検知信号は処理回路８に出
力される。A dirt / foreign matter detection sensor 7 is disposed immediately below the human body detection sensor 4 on the center line LL of the reflecting mirror 3 parallel to the hood 1 in the common monitoring area Z3. The dirt / foreign matter detection sensor 7 is composed of one pyroelectric element 7a and the like, and its level is set so that a normal detection signal when there is no dirt or foreign matter when the heat source 5 is on exceeds a predetermined threshold value. The detection signal at that time is output to the processing circuit 8.
【００１３】処理手段としての処理回路８は人体検知セ
ンサ４と汚れ・異物検知センサ７からの検出信号を取込
んで人体検知及び検知窓２の汚れ、異物有無の状態判別
を行なっており、人体検知センサ４からの検知信号が人
体検知のしきい値を越えた時には、侵入監視領域Ｚ１，
Ｚ２内に人体が侵入している旨の警報信号を表示、音声
等として外部に出力している。また、汚れ・異物検知セ
ンサ７からの検知信号のレベルがしきい値に達しない時
には、検知窓２に汚れの付着や異物貼付等の旨を示す信
号を表示、音声等として外部に出力している。A processing circuit 8 as a processing means takes in the detection signals from the human body detection sensor 4 and the dirt / foreign matter detection sensor 7 to detect the human body and to determine the state of dirt on the detection window 2 and the presence / absence of foreign matter. When the detection signal from the detection sensor 4 exceeds the threshold value of the human body detection, the intrusion monitoring area Z1,
An alarm signal indicating that a human body has entered Z2 is displayed and output to the outside as sound or the like. When the level of the detection signal from the dirt / foreign matter detection sensor 7 does not reach the threshold value, a signal indicating that dirt is attached or foreign matter is adhered is displayed on the detection window 2 and output to the outside as sound or the like. I have.
【００１４】上記のように構成された人体検知器におい
て、図３の時間ａの区間に示すように異物等が無けれ
ば、熱源５が共通監視領域Ｚ３に配設されていることか
ら、この熱源５がオンしても、人体検知センサ４からは
人体検知のしきい値レベルを越えない検知信号が処理回
路８に出力され人体検知しない。また、熱源５がオン状
態にあって検知窓２の状態が正常、つまり汚れが付着し
ていなかったり、異物が貼付されていないので、汚れ・
異物検知センサ７の検知信号はしきい値レベルを越えて
処理回路８に出力され正常とされる。In the human body detector constructed as described above, if there is no foreign matter or the like as shown in a section of time a in FIG. 3, since the heat source 5 is disposed in the common monitoring area Z3, this heat source Even if the switch 5 is turned on, a detection signal that does not exceed the threshold level of the human body detection is output from the human body detection sensor 4 to the processing circuit 8 and the human body is not detected. Further, since the heat source 5 is in the ON state and the state of the detection window 2 is normal, that is, no dirt is attached or no foreign matter is attached,
The detection signal of the foreign object detection sensor 7 exceeds the threshold level and is output to the processing circuit 8 to be normal.
【００１５】図３の時間ｂの区間に示すように検知窓２
が汚れたり、異物が貼付されると、汚れ・異物検知セン
サ７の検知信号がしきい値レベル以下に下がり、この時
の検知信号は処理回路８に出力され、処理回路８ではこ
の検知信号に基づいて汚れの付着や異物が貼付されてい
ると判別してその旨を示す信号を表示、音声等として出
力する。As shown in the section of time b in FIG.
Is stained or a foreign substance is adhered, the detection signal of the dirt / foreign substance detection sensor 7 falls below the threshold level, and the detection signal at this time is output to the processing circuit 8, and the processing circuit 8 Based on this, it is determined that dirt has adhered or a foreign substance has been stuck, and a signal indicating that fact is displayed, output as sound, or the like.
【００１６】従って、上述した実施例では、熱源５がオ
ン状態にある際に、汚れ・異物センサ７の検知信号と予
め設定されたしきい値との比較に基づいて検知窓２の汚
れ、異物の貼付有無の状態が判別されるので、熱源５を
作動させるだけで、自己診断により検知窓の汚れの付着
や異物の貼付を検知することができる。この場合、人体
検知センサ４は熱源５のオン時の検知信号が人体検知の
しきい値レベルを越えないように２個の焦電素子４ａ，
４ｂが差動接続されているので、人体検知の動作を停止
させることなく、汚れ・異物検知センサ７による検知窓
２の汚れ、異物貼付有無の状態検知を行なうことができ
る。また、従来のように検知窓や光学系を２組用意して
光路の切換えを行なう必要がないので、部品に要する配
設スペースを必要最小限に抑えて検知器のコンパクト化
が図れる。Therefore, in the above-described embodiment, when the heat source 5 is in the on state, the detection window 2 is contaminated by foreign matter or foreign matter based on a comparison between the detection signal of the dirt / foreign matter sensor 7 and a preset threshold value. Since the state of the presence or absence of the sticking is determined, only by operating the heat source 5, it is possible to detect the adhesion of the stain on the detection window and the sticking of the foreign matter by the self-diagnosis. In this case, the human body detection sensor 4 uses two pyroelectric elements 4a, 4a so that the detection signal when the heat source 5 is turned on does not exceed the threshold level for human body detection.
4b is differentially connected, so that the state of the detection window 2 can be detected by the dirt / foreign substance detection sensor 7 without stopping the operation of human body detection. Further, since it is not necessary to prepare two sets of detection windows and optical systems and switch the optical path as in the related art, the arrangement space required for the components can be minimized and the detector can be made compact.
【００１７】ところで、上述した実施例では、人体検知
センサ４と汚れ・異物検知センサ７には同じ焦電素子が
用いられていることから、１つのケース内に一体に構成
してもよく、これにより、部品に要する配設スペースを
さらに小さくすることができる。In the above-described embodiment, since the same pyroelectric element is used for the human body detection sensor 4 and the dirt / foreign matter detection sensor 7, they may be integrally formed in one case. Thereby, the arrangement space required for the components can be further reduced.
【００１８】また、熱源５として薄膜ヒータを用いた場
合を例にとって説明したが、他の光を利用してもよい。
また、熱源５は図２に示す共通監視領域Ｚ３内の検知窓
２に配設した構成としたが、共通監視領域Ｚ３内であれ
ば何処に配設しても上述した実施例と同様の効果を得る
ことができる。Although the case where a thin film heater is used as the heat source 5 has been described as an example, other light may be used.
Although the heat source 5 is arranged in the detection window 2 in the common monitoring area Z3 shown in FIG. 2, the same effect as in the above-described embodiment can be provided anywhere in the common monitoring area Z3. Can be obtained.
【００１９】さらに、汚れ・異物検知センサ７はフード
１と平行な反射鏡３の中心線Ｌ−Ｌ上で人体検知センサ
４の直下に配設した構成としたが、熱源５と同様に共通
監視領域Ｚ３内であれば何処に配設してもよい。また、
図４の他の実施例で示すように、焦電素子４ａ，４ｂの
大きさに対してミラー３の大きさ及び焦点距離が十分大
きい場合、図２と同様に光線の軌跡を考えると、ｙ４’
とｙ１’は非常に近づき、また、ｙ２’とｙ３’は非常
に近づくので、検知窓２の前部はほぼＺ３領域となる。
このため、熱源５は検知窓２の前面のどの位置にも配置
でき、熱源５と検知窓２をはさんで汚れ・異物検知セン
サ７を設けるようにしてもよい。Further, the dirt / foreign matter detecting sensor 7 is arranged on the center line LL of the reflecting mirror 3 parallel to the hood 1 and directly below the human body detecting sensor 4. It may be arranged anywhere within the area Z3. Also,
As shown in the other embodiment of FIG. 4, when the size of the mirror 3 and the focal length are sufficiently large with respect to the sizes of the pyroelectric elements 4a and 4b, considering the trajectory of the light ray as in FIG. '
And y1 'are very close, and y2' and y3 'are very close, so that the front part of the detection window 2 is substantially in the Z3 region.
For this reason, the heat source 5 can be arranged at any position on the front surface of the detection window 2, and the dirt / foreign matter detection sensor 7 may be provided between the heat source 5 and the detection window 2.
【００２０】[0020]
【考案の効果】以上説明したように、本考案による人体
検知器は、検知窓を介して入射される侵入監視領域内の
放射エネルギーの変化を検知して侵入監視領域内への人
体の侵入を検知する差動型人体検知センサと、差動型人
体検知センサの不感知領域に配設されエネルギーを放射
する熱源と、熱源の発する放射エネルギーを検知窓を介
して受け、検知窓の汚れ付着や異物貼付等の有無を検知
する汚れ・異物検知センサとを具備し、また、汚れ・異
物検知センサの検知信号のレベルの高低に基づいて検知
窓の汚れや異物等の有無を判別処理する構成なので、人
体検知の動作を停止させることなく汚れや異物等の自己
診断が行なえ、各部品に要する配設スペースを必要最小
限に抑えることができる。As described above, the human body detector according to the present invention detects a change in radiant energy in the intrusion monitoring area incident through the detection window and detects the intrusion of the human body into the intrusion monitoring area. A differential type human body detection sensor for detecting, a heat source disposed in a non-sensing area of the differential type human body detection sensor and radiating energy, and receiving radiant energy generated by the heat source through the detection window to prevent the detection window from being contaminated and It is equipped with a dirt / foreign matter detection sensor for detecting the presence / absence of foreign matter, etc. In addition, self-diagnosis of dirt and foreign matter can be performed without stopping the operation of human body detection, and the arrangement space required for each component can be minimized.
【図１】本考案による人体検知器の一実施例を示す概略
構成図FIG. 1 is a schematic configuration diagram showing an embodiment of a human body detector according to the present invention.
【図２】本考案による人体検知器の一実施例を示す説明
図FIG. 2 is an explanatory view showing one embodiment of the human body detector according to the present invention;
【図３】検知器の各部の波形図FIG. 3 is a waveform diagram of each part of the detector.
【図４】本考案による人体検知器の他の一実施例を示す
説明図FIG. 4 is an explanatory view showing another embodiment of the human body detector according to the present invention;
２ 検知窓 ４ 人体検知センサ ４ａ，４ｂ 焦電素子 ５ 熱源 ７ 汚れ・異物検知センサ ７ａ 焦電素子 ８ 処理回路（処理手段） Ｚ１，Ｚ２ 侵入監視領域 Ｚ３ 共通監視領域 2 detection window 4 human body detection sensor 4a, 4b pyroelectric element 5 heat source 7 dirt / foreign substance detection sensor 7a pyroelectric element 8 processing circuit (processing means) Z1, Z2 intrusion monitoring area Z3 common monitoring area
───────────────────────────────────────────────────── フロントページの続き (72)考案者 東 不二夫 東京都三鷹市下連雀６−11−23 セコム 株式会社内 (56)参考文献 特開 平３−36686（ＪＰ，Ａ) 特開 平２−287278（ＪＰ，Ａ) 特開 平４−340194（ＪＰ，Ａ) 実開 平２−105131（ＪＰ，Ｕ) ──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Fujio Higashi 6-11-23 Shimorenjaku, Mitaka City, Tokyo Inside SECOM Corporation (56) References JP-A-3-36686 (JP, A) JP-A-2-287278 (JP, A) JP-A-4-340194 (JP, A) JP-A-2-105131 (JP, U)
Claims (2)
内の放射エネルギーの変化を検知して前記侵入監視領域
内への人体の侵入を検知する差動型人体検知センサと、 前記差動型人体検知センサの不感知領域に配設されエネ
ルギーを放射する熱源と、 前記熱源の発する放射エネルギーを前記検知窓を介して
受け、該検知窓の汚れ付着や異物貼付等の有無を検知す
る汚れ・異物検知センサと を具備したことを特徴とする
人体検知器。1. A differential type human body detection sensor for detecting a change in radiant energy in an intrusion monitoring area incident through a detection window to detect intrusion of a human body into the intrusion monitoring area, and the differential Installed in the non-sensing area of the
Heat source radiating energy, and radiant energy emitted by the heat source through the detection window
To detect the presence or absence of dirt or foreign matter on the detection window.
A human body detector comprising a dirt / foreign matter detection sensor .
レベルの高低に基づいて前記検知窓の汚れや異物等の有
無を判別処理する処理手段を備えた請求項１記載の人体
検知器。2. The human body detector according to claim 1, further comprising processing means for determining the presence or absence of dirt or foreign matter in the detection window based on the level of the detection signal of the dirt / foreign matter detection sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10131791U JP2583331Y2 (en) | 1991-11-14 | 1991-11-14 | Human body detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10131791U JP2583331Y2 (en) | 1991-11-14 | 1991-11-14 | Human body detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0543092U JPH0543092U (en) | 1993-06-11 |
| JP2583331Y2 true JP2583331Y2 (en) | 1998-10-22 |
Family
ID=14297440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10131791U Expired - Fee Related JP2583331Y2 (en) | 1991-11-14 | 1991-11-14 | Human body detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2583331Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3359712B2 (en) * | 1993-08-31 | 2002-12-24 | 株式会社ニデック | Non-contact tonometer |
| JP5889712B2 (en) * | 2012-05-18 | 2016-03-22 | 住友重機械工業株式会社 | Ultrasonic sensor |
-
1991
- 1991-11-14 JP JP10131791U patent/JP2583331Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0543092U (en) | 1993-06-11 |
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