JP2000057447A - Area intruder detector - Google Patents
Area intruder detectorInfo
- Publication number
- JP2000057447A JP2000057447A JP10220426A JP22042698A JP2000057447A JP 2000057447 A JP2000057447 A JP 2000057447A JP 10220426 A JP10220426 A JP 10220426A JP 22042698 A JP22042698 A JP 22042698A JP 2000057447 A JP2000057447 A JP 2000057447A
- Authority
- JP
- Japan
- Prior art keywords
- infrared
- infrared light
- infrared sensor
- pyroelectric
- pyroelectric infrared
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、保安設備に利用さ
れる侵入者検知装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intruder detecting device used for security equipment.
【０００２】[0002]
【従来の技術】従来の技術を図２に示す。2. Description of the Related Art FIG.
【０００３】敷地等へその境界を越えて侵入しようとす
る人を自動的に検出して警告を発したいという要求に対
して、従来は図２に示すような構造の赤外線等の光線を
用いたセンサが広く用いられている。In response to a request to automatically detect a person trying to enter a site or the like beyond the boundary and to issue a warning, a light beam such as an infrared ray having a structure as shown in FIG. Sensors are widely used.
【０００４】図２のセンサによれば、１対のポール２
１、２２に、それぞれ赤外線発光部２５と赤外線受光素
子２６を対向して設置し、これらによって作られる光線
１７を侵入者などの物体１８が遮った場合に検出をおこ
なうことができる。According to the sensor shown in FIG.
An infrared light emitting unit 25 and an infrared light receiving element 26 are respectively installed opposite to each other at 1 and 22 so that detection can be performed when a light beam 17 generated by these is blocked by an object 18 such as an intruder.
【０００５】特開昭５８−１２３１９２号公報に記載さ
れた発明もその一例であり、センサの方向及び高さを可
変としている以外は基本的に図２に示すセンサと同じ原
理に基づいている。The invention described in Japanese Patent Application Laid-Open No. 58-123192 is also an example, and is basically based on the same principle as the sensor shown in FIG. 2 except that the direction and height of the sensor are variable.
【０００６】[0006]
【発明が解決しようとする課題】しかし、従来の技術に
は、次のような問題がある。 （１）図２のセンサでは、光線を遮るものの種類に関わ
らず一律に警報を発するため、落ち葉など侵入者以外の
物体によっても警報が発せられてしまうという問題があ
る。 （２）また、警報が発せられた場合に、物体を監視カメ
ラで撮影して侵入者を確認したりして記録をとることな
どの要求があるが、物体が光線を遮った位置の情報が得
られないため、監視カメラ等を自動的に侵入者に向ける
ように制御することができない。However, the prior art has the following problems. (1) The sensor of FIG. 2 issues an alarm uniformly regardless of the type of object that blocks the light beam. Therefore, there is a problem that an alarm is also issued by an object other than an intruder such as a fallen leaf. (2) In addition, when an alarm is issued, there is a demand that an object be photographed with a surveillance camera to check an intruder or to make a record. Because it cannot be obtained, it is not possible to control the surveillance camera or the like to automatically point it at the intruder.
【０００７】本発明は、これらの問題を解決することが
できる装置を提供することを目的とする。[0007] An object of the present invention is to provide an apparatus capable of solving these problems.
【０００８】[0008]
【課題を解決するための手段】（第１の手段）本発明に
係る領域侵入者検知装置は，（Ａ）第１ポール１と、第
２ポール２と、赤外線発光部３と、赤外線受光素子４
と、第１焦電型赤外線センサ５と、第２焦電型赤外線セ
ンサ６と、赤外線レンズ７と、増幅器８と、入力手段１
０と、計算機１１と、電動雲台１４と、監視カメラ１５
とからなり、（Ｂ）前記赤外線発光部３と第１焦電型赤
外線センサ５を有する第１ポール１を、赤外線受光素子
４と第２焦電型赤外線センサ６を有する第２ポール２に
対向して設置し、（Ｃ）前記赤外線発光部３と赤外線受
光素子４は、波長域が ０．８〜１．０μｍ である光線１３により、敷地領域に侵入した物体１２が
通過した瞬間に、通過物体１２の発生する赤外線を捕ら
え、（Ｄ）前記第１焦電型赤外線センサ５は、第１焦電
型赤外線センサ５の前面に設置した第１赤外線レンズ７
Ａに施した誘電体フィルタにより通過物体１２の発生す
る赤外線のうち８〜１２μｍのみの波長を透過させて、
検出した信号を、第１増幅器８Ａにより増幅した後、入
力手段１０を通して計算機１１へ出力し、（Ｅ）前記第
２焦電型赤外線センサ６は、第２焦電型赤外線センサ６
の前面に設置した第２赤外線レンズ７Ｂに施した誘電体
フィルタにより通過物体１２の発生する赤外線のうち８
〜１２μｍのみの波長を透過させて、検出した信号を、
第２増幅器８Ｂにより増幅した後、入力手段１０を通し
て計算機１１へ出力し、（Ｆ）前記計算機１１は、前記
第１焦電型赤外線センサ５および第２焦電型赤外線セン
サ６からの入力値から、前記物体１２の第１ポール１と
第２ポール２間における位置の算出を行うとともに、前
記物体１２が発生する赤外線による信号強度を距離に依
存しない値Ａに変換して、前記物体１２が人であるか否
かを判定し、（Ｇ）前記電動雲台１４は、計算機１１か
らの信号を入力して、前記物体が人である場合に、計算
された物体位置の方向に監視カメラ１５を向けることを
特徴とする。(First Means) An area intruder detecting apparatus according to the present invention comprises: (A) a first pole 1, a second pole 2, an infrared light emitting section 3, and an infrared light receiving element. 4
, A first pyroelectric infrared sensor 5, a second pyroelectric infrared sensor 6, an infrared lens 7, an amplifier 8, and an input unit 1.
0, a computer 11, an electric pan head 14, and a surveillance camera 15
(B) the first pole 1 having the infrared light emitting section 3 and the first pyroelectric infrared sensor 5 is opposed to the second pole 2 having the infrared light receiving element 4 and the second pyroelectric infrared sensor 6 (C) The infrared light emitting part 3 and the infrared light receiving element 4 are transmitted by the light ray 13 having a wavelength range of 0.8 to 1.0 μm at the moment when the object 12 invading the site area passes. (D) The first pyroelectric infrared sensor 5 captures infrared light generated by the object 12, and the first pyroelectric infrared sensor 5 is disposed on the front surface of the first pyroelectric infrared sensor 5.
The dielectric filter applied to A transmits only the wavelength of 8 to 12 μm out of the infrared rays generated by the passing object 12,
After the detected signal is amplified by the first amplifier 8A, it is output to the computer 11 through the input means 10. (E) The second pyroelectric infrared sensor 6
8 out of the infrared rays generated by the passing object 12 by the dielectric filter applied to the second infrared lens 7B installed in front of the
The signal detected by transmitting the wavelength of only ~ 12 μm is
After being amplified by the second amplifier 8B, the amplified signal is output to the computer 11 through the input means 10. (F) The computer 11 calculates the input value from the first pyroelectric infrared sensor 5 and the second pyroelectric infrared sensor 6 from the input values. The position of the object 12 between the first pole 1 and the second pole 2 is calculated, and the signal intensity of the infrared light generated by the object 12 is converted into a value A that does not depend on the distance. (G) The electric pan head 14 receives a signal from the computer 11 and, when the object is a person, sets the surveillance camera 15 in the direction of the calculated object position. It is characterized by turning.
【０００９】すなわち、本発明に係る領域侵入者検知装
置は、２つの焦電型赤外線センサ５、６を利用して、物
体１２が通過した瞬間に通過物体１２の発生する赤外線
を捕らえ、双方の出力強度から物体１２の通過位置を計
算するとともに、物体１２が発生する赤外線による信号
強度を距離に依存しない値Ａに変換して、その物体１２
が人であるか否かを判定し、前記物体が人である場合
に、計算された物体１２の方向に監視カメラ１５を向け
ることを特徴とする。That is, the area intruder detecting apparatus according to the present invention uses the two pyroelectric infrared sensors 5 and 6 to capture the infrared rays generated by the passing object 12 at the moment when the object 12 passes, The passing position of the object 12 is calculated from the output intensity, and the signal intensity of the infrared light generated by the object 12 is converted into a value A that does not depend on the distance.
Is determined to be a person, and when the object is a person, the monitoring camera 15 is directed to the calculated direction of the object 12.
【００１０】[0010]
【発明の実施の形態】（第１の実施の形態）本発明の第
１の実施の形態を図１に示す。DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) FIG. 1 shows a first embodiment of the present invention.
【００１１】図１の装置においては、１対のポール１、
２に、それぞれ赤外線発光部３と赤外線受光素子４を対
向して設置し、加えて双方のポールに第１焦電型赤外線
センサ５と、第２焦電型赤外線センサ６を設置する。In the apparatus shown in FIG. 1, a pair of poles 1,
2, a first pyroelectric infrared sensor 5 and a second pyroelectric infrared sensor 6 are installed on both poles.
【００１２】赤外線発光部３及び赤外線受光素子４が使
用する波長域が０．８〜１．０μｍ、すなわち、約１μ
ｍであるのに対して、第１焦電型赤外線センサ５は、第
１焦電型赤外線センサ５の前面に設置した第１赤外線レ
ンズ７Ａに施した誘電体フィルタにより、８〜１２μｍ
のみの波長を透過させて検出し、第２焦電型赤外線セン
サ６は、第２焦電型赤外線センサ６の前面に設置した第
２赤外線レンズ７Ｂに施した誘電体フィルタにより、８
〜１２μｍのみの波長を透過させて検出する。The wavelength range used by the infrared light emitting section 3 and the infrared light receiving element 4 is 0.8 to 1.0 μm, that is, about 1 μm.
m, the first pyroelectric infrared sensor 5 has a thickness of 8 to 12 μm due to a dielectric filter applied to the first infrared lens 7A installed on the front surface of the first pyroelectric infrared sensor 5.
The second pyroelectric infrared sensor 6 is detected by transmitting only the wavelength, and the second pyroelectric infrared sensor 6 is detected by a dielectric filter applied to a second infrared lens 7B installed on the front surface of the second pyroelectric infrared sensor 6.
Detection is performed by transmitting only a wavelength of １２12 μm.
【００１３】そのため、赤外線発光部３の発生する赤外
線１３は、第２焦電型赤外線センサ６に影響を及ぼすこ
とはない。Therefore, the infrared rays 13 generated by the infrared light emitting section 3 do not affect the second pyroelectric infrared sensor 6.
【００１４】また、８〜１２μｍの波長帯は、人体の熱
により発生する赤外線を検出するのに適した波長帯であ
り、前記焦電型赤外線センサ５および６は赤外線強度の
変化に対して信号を出力するので、通過した物体が人体
のような発熱体である場合には前記焦電型赤外線センサ
が出力を発することになる。The wavelength band of 8 to 12 μm is a wavelength band suitable for detecting infrared rays generated by heat of the human body, and the pyroelectric infrared sensors 5 and 6 provide a signal in response to a change in infrared intensity. Is output, the pyroelectric infrared sensor emits an output when the passing object is a heating element such as a human body.
【００１５】第１焦電型赤外線センサ５の出力は第１増
幅器８Ａを通して、第２焦電型赤外線センサ６の出力は
第２増幅器８Ｂを通して、伝送に必要な強度に増幅した
後、入力手段１０を通して計算機１１に入力される。The output of the first pyroelectric infrared sensor 5 is amplified through a first amplifier 8A, and the output of the second pyroelectric infrared sensor 6 is amplified through a second amplifier 8B to an intensity required for transmission. Is input to the computer 11 through.
【００１６】赤外線発光部３及び赤外線受光素子４によ
って物体１２が光線１３を遮ったことを検知した場合、
計算機１１では、前記双方の焦電型赤外線センサ５、６
の出力値から物体が人であるかどうかの判定、および物
体１２のポール間における位置の算出を行う。When the infrared light emitting unit 3 and the infrared light receiving element 4 detect that the object 12 has blocked the light beam 13,
In the computer 11, both of the pyroelectric infrared sensors 5, 6
Is determined based on the output value of, whether the object is a person, and the position of the object 12 between the poles is calculated.
【００１７】電動雲台１４は計算された物体の方向に監
視カメラ１５を向ける。The electric head 14 points the surveillance camera 15 in the direction of the calculated object.
【００１８】したがって、次のように作用する。Therefore, the operation is as follows.
【００１９】物体が発生する赤外線は、第１焦電型赤外
線センサ５と第２焦電型赤外線センサ６によって信号化
されるが、第１焦電型赤外線センサ５の信号強度を
Ｉ1 、第２焦電型赤外線センサ６の信号強度をＩ2 、第
１焦電型赤外線センサ５から物体１２までの距離を
ｄ1 、第２焦電型赤外線センサ６から物体１２までの距
離をｄ2 、前記焦電型赤外線センサ５と６の間の距離を
Ｄ、距離が１であるときの物体１２の発生する赤外線に
よる信号強度をＡ、とするとき、これらの値のうち、Ｄ
については最初から既知であり、Ｉ1 は第１焦電型赤外
線センサ５の出力として計算機にとり込まれた値、Ｉ2
は第２焦電型赤外線センサ６の出力として計算機にとり
込まれた値、である。The infrared light generated by the object is converted into a signal by the first pyroelectric infrared sensor 5 and the second pyroelectric infrared sensor 6, and the signal intensity of the first pyroelectric infrared sensor 5 is set to I 1 , The signal intensity of the second pyroelectric infrared sensor 6 is I 2 , the distance from the first pyroelectric infrared sensor 5 to the object 12 is d 1 , the distance from the second pyroelectric infrared sensor 6 to the object 12 is d 2 , When the distance between the pyroelectric infrared sensors 5 and 6 is D, and the signal intensity of the infrared ray generated by the object 12 when the distance is 1 is A, D
Is known from the beginning, I 1 is the value taken into the computer as the output of the first pyroelectric infrared sensor 5, I 2
Is a value taken into the computer as the output of the second pyroelectric infrared sensor 6.
【００２０】一般に焦電型赤外線センサが発生する信号
の強度は、物体１２からの距離の二乗に反比例するた
め、以下の式の関係が成り立つ。Generally, the intensity of the signal generated by the pyroelectric infrared sensor is inversely proportional to the square of the distance from the object 12, so that the following equation holds.
【００２１】[0021]
【数１】 この式をｄ1 、ｄ2 、Ａについて解くと、(Equation 1) Solving this equation for d 1 , d 2 and A gives
【数２】 となる。(Equation 2) Becomes
【００２２】上記の式によりｄ1 、ｄ2 を求めることに
より物体１２の通過位置を知ることができる。The passing position of the object 12 can be known by obtaining d 1 and d 2 according to the above equations.
【００２３】また、Ａを求めることにより、物体の発生
する赤外線による信号強度Ａを距離ｄ1 、ｄ2 に関わら
ない値として知ることが出来る。Further, by obtaining A, the signal intensity A of the infrared ray generated by the object can be known as a value irrespective of the distances d 1 and d 2 .
【００２４】そのため、この大きさＡが一定の閾値の範
囲に含まれる場合に物体１２が人であると判定すること
が出来る。Therefore, when the size A falls within the range of a certain threshold value, it can be determined that the object 12 is a person.
【００２５】[0025]
【発明の効果】本発明は前述のように構成されているの
で、以下に記載するような効果を奏する。 （１）本発明に係る領域侵入者検知装置は、２つの焦電
型赤外線センサを利用して、物体が通過した瞬間に通過
物体の発生する赤外線を捕らえ、双方の出力強度から物
体の通過位置を計算することが出来る。 （２）通過物体が発生する赤外線による信号強度を、距
離に依存しない値Ａに変換して、その通過物体が人であ
るか否かを判定し、計算された通過物体の方向に監視カ
メラを向けることができる。Since the present invention is configured as described above, it has the following effects. (1) The area intruder detection device according to the present invention uses two pyroelectric infrared sensors to capture infrared light generated by a passing object at the moment when the object passes, and based on both output intensities, the passing position of the object. Can be calculated. (2) The signal intensity of the infrared light generated by the passing object is converted into a value A that does not depend on the distance, it is determined whether the passing object is a person, and the surveillance camera is moved in the direction of the calculated passing object. Can turn.
【図１】本発明の第１の実施の形態に係る装置の説明
図。FIG. 1 is an explanatory diagram of an apparatus according to a first embodiment of the present invention.
【図２】従来の装置の説明図。FIG. 2 is an explanatory view of a conventional device.
１ …第１ポール ２ …第２ポール ３ …赤外線発光部 ４ …赤外線受光素子 ５ …第１焦電型赤外線センサ ６ …第２焦電型赤外線センサ ７ …赤外線レンズ ７Ａ…第１赤外線レンズ ７Ｂ…第２赤外線レンズ ８ …増幅器 ８Ａ…第１増幅器 ８Ｂ…第２増幅器 １０…入力手段 １１…計算機 １２…物体 １３…光線 １４…電動雲台 １５…監視カメラ １６…赤外線受光素子 １７…光線 １８…物体 ２１…第１ポール ２２…第２ポール ２５…赤外線発光部 ２６…赤外線受光素子 DESCRIPTION OF SYMBOLS 1 ... 1st pole 2 ... 2nd pole 3 ... Infrared light emitting part 4 ... Infrared light receiving element 5 ... 1st pyroelectric infrared sensor 6 ... 2nd pyroelectric infrared sensor 7 ... Infrared lens 7A ... 1st infrared lens 7B ... Second infrared lens 8 ... Amplifier 8A ... First amplifier 8B ... Second amplifier 10 ... Input means 11 ... Computer 12 ... Object 13 ... Light beam 14 ... Electric pan head 15 ... Monitoring camera 16 ... Infrared light receiving element 17 ... Light beam 18 ... Object DESCRIPTION OF SYMBOLS 21 ... 1st pole 22 ... 2nd pole 25 ... Infrared light emitting part 26 ... Infrared light receiving element
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 2G065 AA04 AB02 BA13 BA14 BA32 BB06 BB24 BC02 BC03 BC07 BC13 BD03 BE07 DA05 DA18 5C054 CF06 CG07 HA18 5C084 AA02 AA07 AA15 AA19 BB01 BB05 CC16 DD11 DD41 DD43 DD57 DD65 DD71 DD89 EE10 GG21 GG57 GG75 HH20 ──────────────────────────────────────────────────続 き Continuing on the front page F term (reference) 2G065 AA04 AB02 BA13 BA14 BA32 BB06 BB24 BC02 BC03 BC07 BC13 BD03 BE07 DA05 DA18 5C054 CF06 CG07 HA18 5C084 AA02 AA07 AA15 AA19 BB01 BB05 CC16 DD11 DD41 DD43 DD57 EEDD DD31 GG75 HH20
Claims (1)
線発光部と、赤外線受光素子と、第１焦電型赤外線セン
サと、第２焦電型赤外線センサと、赤外線レンズと、増
幅器と、入力手段と、計算機と、電動雲台と、監視カメ
ラとからなり、（Ｂ）前記赤外線発光部と第１焦電型赤
外線センサを有する第１ポールを、赤外線受光素子と第
２焦電型赤外線センサを有する第２ポールに対向して設
置し、（Ｃ）前記赤外線発光部と赤外線受光素子は、波
長域が ０．８〜１．０μｍ である光線により、敷地領域に侵入した物体が通過した
瞬間に、通過物体の発生する赤外線を捕らえ、（Ｄ）前
記第１焦電型赤外線センサは、前面に設置した第１赤外
線レンズに施した誘電体フィルタにより通過物体の発生
する赤外線のうち８〜１２μｍのみの波長を透過させ
て、検出した信号を、第１増幅器により増幅した後、入
力手段を通して前記計算機へ出力し、（Ｅ）前記第２焦
電型赤外線センサは、前面に設置した第２赤外線レンズ
に施した誘電体フィルタにより通過物体の発生する赤外
線のうち８〜１２μｍのみの波長を透過させて、検出し
た信号を、第２増幅器により増幅した後、入力手段を通
して前記計算機へ出力し、（Ｆ）前記計算機は、前記第
１焦電型赤外線センサおよび第２焦電型赤外線センサか
らの入力値から、前記物体のポール間における位置の算
出を行うとともに、前記物体が発生する赤外線による信
号強度を距離に依存しない値に変換して、前記物体が人
であるか否かを判定し、（Ｇ）前記電動雲台は、前記計
算機からの信号を入力して、前記物体が人である場合
に、計算された物体位置の方向に監視カメラを向けるこ
とを特徴とする領域侵入者検知装置。(A) a first pole, a second pole, an infrared light emitting section, an infrared light receiving element, a first pyroelectric infrared sensor, a second pyroelectric infrared sensor, an infrared lens, And (B) a first pole having the infrared light emitting section and the first pyroelectric infrared sensor, and an infrared light receiving element and a second focus. (C) the infrared light-emitting portion and the infrared light-receiving element are intruded into the site area by a light beam having a wavelength range of 0.8 to 1.0 μm; (D) the first pyroelectric infrared sensor detects the infrared light generated by the passing object by a dielectric filter applied to a first infrared lens installed on the front surface at the moment when the object passes. Of which only the wavelength of 8 to 12 μm is transmitted. Then, after the detected signal is amplified by the first amplifier, the amplified signal is output to the computer through the input means. (E) The second pyroelectric infrared sensor uses a dielectric applied to a second infrared lens installed on the front surface. The body filter transmits only the wavelength of 8 to 12 μm out of the infrared rays generated by the passing object, amplifies the detected signal by the second amplifier, and outputs the amplified signal to the computer through input means. (F) The computer Calculating the position of the object between the poles from input values from the first pyroelectric infrared sensor and the second pyroelectric infrared sensor, and making the signal intensity of the infrared light generated by the object independent of the distance. (G) the motor-driven head receives a signal from the computer and calculates when the object is a person. An area intruder detection device characterized by directing a surveillance camera in the direction of an object position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22042698A JP3477374B2 (en) | 1998-08-04 | 1998-08-04 | Area intruder detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22042698A JP3477374B2 (en) | 1998-08-04 | 1998-08-04 | Area intruder detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000057447A true JP2000057447A (en) | 2000-02-25 |
| JP3477374B2 JP3477374B2 (en) | 2003-12-10 |
Family
ID=16750938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22042698A Expired - Fee Related JP3477374B2 (en) | 1998-08-04 | 1998-08-04 | Area intruder detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3477374B2 (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5624690A (en) * | 1979-08-07 | 1981-03-09 | Nippon Ceramic Kk | Ellegal invader alraming device |
| JPS6431086A (en) * | 1987-07-28 | 1989-02-01 | Matsushita Electric Works Ltd | Heat ray detector |
| JPH0540886A (en) * | 1991-08-05 | 1993-02-19 | Atsumi Denki Kk | Infrared ray receiver |
| JP3003069U (en) * | 1994-04-13 | 1994-10-11 | 松山 芳夫 | Security device |
| JPH07225883A (en) * | 1994-02-10 | 1995-08-22 | Gennen Yuso Kk | Specific district guarding device |
| JPH07244718A (en) * | 1994-03-02 | 1995-09-19 | Hamamatsu Photonics Kk | Security unit |
| JPH09113634A (en) * | 1995-10-20 | 1997-05-02 | Nissan Motor Co Ltd | Human body detecting device |
| JPH09185777A (en) * | 1995-12-28 | 1997-07-15 | Tokyo Gas Co Ltd | Method and device for wide-area trespass monitoring |
| JPH09236486A (en) * | 1996-03-04 | 1997-09-09 | Nohmi Bosai Ltd | Pyroelectric infrared sensor |
-
1998
- 1998-08-04 JP JP22042698A patent/JP3477374B2/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5624690A (en) * | 1979-08-07 | 1981-03-09 | Nippon Ceramic Kk | Ellegal invader alraming device |
| JPS6431086A (en) * | 1987-07-28 | 1989-02-01 | Matsushita Electric Works Ltd | Heat ray detector |
| JPH0540886A (en) * | 1991-08-05 | 1993-02-19 | Atsumi Denki Kk | Infrared ray receiver |
| JPH07225883A (en) * | 1994-02-10 | 1995-08-22 | Gennen Yuso Kk | Specific district guarding device |
| JPH07244718A (en) * | 1994-03-02 | 1995-09-19 | Hamamatsu Photonics Kk | Security unit |
| JP3003069U (en) * | 1994-04-13 | 1994-10-11 | 松山 芳夫 | Security device |
| JPH09113634A (en) * | 1995-10-20 | 1997-05-02 | Nissan Motor Co Ltd | Human body detecting device |
| JPH09185777A (en) * | 1995-12-28 | 1997-07-15 | Tokyo Gas Co Ltd | Method and device for wide-area trespass monitoring |
| JPH09236486A (en) * | 1996-03-04 | 1997-09-09 | Nohmi Bosai Ltd | Pyroelectric infrared sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3477374B2 (en) | 2003-12-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7983445B2 (en) | Method of detecting particles by detecting a variation in scattered radiation | |
| AU2008215714B2 (en) | Heat-ray sensor | |
| US20100117839A1 (en) | System and method for detecting fire | |
| KR101575011B1 (en) | Senser using image information and the senser diving method and intergrated securing system thereof | |
| JP3263311B2 (en) | Object detection device, object detection method, and object monitoring system | |
| KR101489215B1 (en) | Senser using image information and the senser diving method and intergrated securing system thereof | |
| JP2000057447A (en) | Area intruder detector | |
| WO2000013153A1 (en) | Infrared intruder recognition method and apparatus | |
| CN209962382U (en) | Intelligent fire detection system | |
| JP6279407B2 (en) | Human body detection device | |
| JP3584399B2 (en) | Snow gauge | |
| KR101202610B1 (en) | Infrared Intrusion Detector and Method Thereof | |
| US9063229B2 (en) | Mirror used as microwave antenna for motion sensor | |
| KR101255083B1 (en) | Passive infrared sensing device and method thereof | |
| JP2003004862A (en) | Human body detector | |
| KR101008377B1 (en) | Monitoring Method having a function of detering trespasser and apparatus thereof | |
| JP2000258552A (en) | Human body sensor | |
| KR101142212B1 (en) | Intrusion sensing apparatus and method | |
| JPH07286895A (en) | Infrared ray sensor | |
| JPH11339150A (en) | Fire detector using image processing | |
| KR20060014578A (en) | Robot has intrusion detection function and intrusion detection method thereof | |
| JP2008256367A (en) | Infrared imaging device, obstacle detector and method therefor | |
| JP2001124864A (en) | Human body detection sensor | |
| JP2000209567A (en) | Obstacle detector | |
| JPS62162197A (en) | Invasion detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20030902 |
|
| LAPS | Cancellation because of no payment of annual fees |