JPH0355909Y2 - - Google Patents
Info
- Publication number
- JPH0355909Y2 JPH0355909Y2 JP16520485U JP16520485U JPH0355909Y2 JP H0355909 Y2 JPH0355909 Y2 JP H0355909Y2 JP 16520485 U JP16520485 U JP 16520485U JP 16520485 U JP16520485 U JP 16520485U JP H0355909 Y2 JPH0355909 Y2 JP H0355909Y2
- Authority
- JP
- Japan
- Prior art keywords
- receiver
- light
- output
- emitter
- frequency
- 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
Links
- 238000001514 detection method Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 239000000284 extract Substances 0.000 claims 1
- 230000003287 optical effect Effects 0.000 description 14
- 230000035945 sensitivity Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 230000007257 malfunction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 108091008695 photoreceptors Proteins 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Burglar Alarm Systems (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
Description
【考案の詳細な説明】
本考案は侵入者を検知しようとする警戒範囲の
両側に赤外線ビームの投光器とそのビームの受光
器とを相対向するように設置して、侵入者がこの
ビームを遮断すると警報が送出されるように構成
した対向式赤外線侵入者検知装置に関する。[Detailed description of the invention] This invention installs an infrared beam emitter and an infrared beam receiver facing each other on both sides of a security range where an intruder is to be detected, so that an intruder can block this beam. The present invention relates to a facing type infrared intruder detection device configured so that an alarm is sent out when the intruder is detected.
このような装置において、雨天または霧の発生
時等でも確実な動作を行わせるために、受光器の
感度を増大すると雑音電圧あるいは外乱光等によ
つて誤動作を生じ易くなる。従つて受光器に入射
する赤外線ビームを強くしなければならないが、
投光器の消費電力には限度があるから、投受光器
間の光軸合せを正確に行つてビームを有効に利用
する必要がある。この場合、受光器はその光電素
子の受光面が比較的大きいために、広い角度範囲
に亘つて高感度を有するから光軸が正確に投光器
の位置を通るように調整する必要がない。しかし
投光器は投射ビームの拡散角が一般に極めて小さ
いために、その光軸が正確に受光器の位置を通る
ように取付角の調整を行わなければならない。か
つ赤外線ビームを直視することはできないから、
従来は２人の作業員を投光器側と受光器側とに配
置して、投光器の光軸を調整すると同時に受光器
側でその光電出力を読み取つて投光器側に連絡す
ることにより、出力が最大となる位置に固定する
操作を必要として、作業が容易でない欠点があつ
た。従つて本考案は２人の作業員を必要とするこ
となく、１人で容易、正確、迅速に投光器の光軸
調整を行い得る装置を提供するものである。 In such a device, if the sensitivity of the light receiver is increased in order to ensure reliable operation even in rainy weather or fog, malfunctions are likely to occur due to noise voltage or ambient light. Therefore, the infrared beam that enters the receiver must be made stronger;
Since there is a limit to the power consumption of a projector, it is necessary to accurately align the optical axes between the projector and receiver to utilize the beam effectively. In this case, since the light receiver has a relatively large light receiving surface of its photoelectric element, it has high sensitivity over a wide angular range, so there is no need to adjust the optical axis so that it accurately passes through the position of the projector. However, since the angle of divergence of the projected beam of a projector is generally extremely small, the installation angle must be adjusted so that the optical axis of the projector accurately passes through the position of the receiver. And since you can't look directly at the infrared beam,
Conventionally, two workers were placed on the emitter side and the receiver side, and the output was maximized by adjusting the optical axis of the emitter and simultaneously reading the photoelectric output on the receiver side and communicating it to the emitter side. The problem is that it requires an operation to fix it in a certain position, making it difficult to work with. Therefore, the present invention provides a device that allows one person to easily, accurately, and quickly adjust the optical axis of a projector without requiring two workers.
本考案は投光器および受光器を同一の直流電源
に接続すると共に受光器の出力を周波数信号に変
換してその電源線に加え、投光器の設置部分にお
いて上記電源線から得られる周波数信号を観測す
ることにより投光器の光軸調整を行つて、これが
正確に受光器の位置を通るように設定するもので
ある。すなわち電源線を周波数変調波の信号線と
して利用することにより、投光器側において受光
器の出力、従つて受光器に対する投光器の光軸の
位置を判断することができる。従つてその光軸が
正確に受光器の位置を通つて、受光器から最大の
出力が得られるように、投光器の光軸調整を１人
の作業員だけで正確、容易、迅速に行い得る作用
効果がある。 The present invention connects the emitter and receiver to the same DC power source, converts the output of the receiver into a frequency signal, adds it to the power line, and observes the frequency signal obtained from the power line at the location where the emitter is installed. The optical axis of the projector is adjusted so that it passes exactly through the position of the receiver. That is, by using the power supply line as a signal line for frequency modulated waves, the output of the light receiver, and therefore the position of the optical axis of the light emitter with respect to the light receiver, can be determined on the side of the light emitter. Therefore, the optical axis of the projector can be adjusted accurately, easily, and quickly by only one worker so that the optical axis accurately passes through the position of the receiver and maximum output is obtained from the receiver. effective.
第１図は本考案実施例の構成を示した図で、投
光部１および受光部２は侵入者を警戒しようとす
る範囲を挟んでその両側に配置され、適宜の個所
に設けた直流電源３から共通の電源線４により電
力の供給を受ける。なおこの場合、必要に応じて
は電源線４と投光部１または受光部２の間にチヨ
ークのようなフイルタ５または６を介挿して交流
分を除去する。投光部１には第２図に一例を示し
たように放物面反射鏡７の焦点位置に発光ダイオ
ードのような赤外線の点光源８を配置した投光器
９と、この投光器に一定の同期のパルス電力を加
えるパルス発生器１０、および電源線４から得ら
れる交流成分の受信機１１、その出力の周波数弁
別器１２、周波数表示器１３等を設けてある。ま
た受光部２には第３図のように放物面反射鏡１４
とその焦点位置に配置したフオトトランジスタそ
の他適宜の光電素子１５とからなる受光器１６を
設けると共にこの受光器の出力から前記パルス発
生器１０と同一の周波数成分を抽出するフイルタ
１７、その出力の増幅器１８ａおよびこの増幅器
の出力が所定のレベル以下に低下したとき信号を
送出するレベル検出器１９を設けて、この検出器
の出力を任意の監視所に設置した警報器２０に加
えるようにしてある。更に上記受光部２には増幅
器１８の出力を加えられる周波数信号発生器２１
およびその出力の送信機２２を設けて、送信機２
２の出力を前記電源線４に加えてある。 FIG. 1 is a diagram showing the configuration of an embodiment of the present invention, in which a light projecting section 1 and a light receiving section 2 are placed on both sides of the area to be guarded against intruders, and DC power supplies are installed at appropriate locations. 3 through a common power supply line 4. In this case, if necessary, a filter 5 or 6 such as a filter is inserted between the power supply line 4 and the light projecting section 1 or the light receiving section 2 to remove the alternating current component. The light projector 1 includes a projector 9 in which an infrared point light source 8 such as a light emitting diode is arranged at the focal position of a parabolic reflector 7, as shown in an example in FIG. A pulse generator 10 for applying pulsed power, a receiver 11 for the AC component obtained from the power supply line 4, a frequency discriminator 12 for its output, a frequency display 13, etc. are provided. In addition, the light receiving section 2 has a parabolic reflector 14 as shown in FIG.
and a phototransistor or other appropriate photoelectric element 15 arranged at its focal position, a filter 17 for extracting the same frequency component as that of the pulse generator 10 from the output of the photoreceptor, and an amplifier for the output thereof. 18a and a level detector 19 which sends out a signal when the output of this amplifier falls below a predetermined level, and the output of this detector is applied to an alarm 20 installed at any monitoring station. Furthermore, a frequency signal generator 21 to which the output of the amplifier 18 is applied to the light receiving section 2 is provided.
and a transmitter 22 for its output, the transmitter 2
2 is added to the power supply line 4.
このような装置において、投光器９はその光源
８の大きさが小さいために第４図のように配光曲
線ｐの拡散角αが光軸ｏを中心とする充分小さい
角度となる。しかし受光器１６は光電素子１５の
受光面が比較的大きいために第５図のように感度
曲線ｑの拡散角βが比較的大きい角度をなし、そ
の光軸ｏを目測で投光器９の方向に向けることに
よつても比較的容易に設定を行うことができる。
これに対して投光器９は光の拡散角αが小さいた
めに目測による設定は困難であると共に角αを大
きくすると電力の損失が大きい。このような投光
器９をほぼ受光器１６の方向に向けて点灯し、そ
の光軸ｏの方向を種々に変化させると、投射光線
が受光器１６に入射したときこの受光器から出力
が送出される。その出力をパルス発生器１０のパ
ルス周波数と同一周波数を通過域とするフイルタ
１７に加えると外光による直流分その他の雑音成
分が除去されて、投光器９の投射光にもとづく出
力のみが抽出される。この出力を増幅器１８で増
大して周波数信号発生器２１に加えることによ
り、上記出力の大きさに対応した周波数の信号を
形成し、送信機２２を介してこの信号を電源線４
に加える。従つて投光器９から受光器１６に入射
する光の量に対応した周波数の信号が電源線４を
伝ぱんして投光部１における受信機１１に加え
る。この受信機１１は上記信号を増幅して周波数
弁別器１２に加えるから、その弁別器から信号の
周波数に対応した大きさの例えば電圧が送出され
て指示電圧計等からなる表示器１３に加わる。す
なわち表示器１３の指針は投光器９から受光器１
６に入射する光の強度に対応した振れを示すか
ら、投光器９の光軸を種々に移動させて、振れが
最大となる位置に固定することによつて第４図の
光軸ｏが受光器１６を通るように投光器９を設定
することができる。この設定を行つたのち投光部
１における受信機１１、周波数弁別器１２、と表
示器１３および受光部２の周波数信号発生器２１
および送信機２２等を電源から切離して設定操作
を完了し、正常な警戒状態に入る。すなわち上述
の設定によつて、投光器９から受光器１６には常
に充分強力な赤外線パルス光が入射しているが、
侵入者によつてその赤外線ビームが遮断される
と、増幅器１８の出力が消滅してレベル検出器１
９から信号が送出される。この信号で警報器２０
が動作して侵入者があつたことを知らせる。 In such a device, since the light source 8 of the projector 9 is small in size, the diffusion angle α of the light distribution curve p is a sufficiently small angle with respect to the optical axis o as shown in FIG. However, since the light receiving surface of the photoelectric element 15 in the light receiver 16 is relatively large, the diffusion angle β of the sensitivity curve q is a relatively large angle as shown in FIG. Settings can also be made relatively easily by pointing the camera.
On the other hand, since the light diffusion angle α of the projector 9 is small, it is difficult to set it by visual measurement, and when the angle α is increased, power loss is large. When such a light projector 9 is turned on with its direction substantially toward the light receiver 16 and the direction of its optical axis o is varied, an output is sent out from the light receiver when the projected light beam is incident on the light receiver 16. . When the output is applied to a filter 17 whose passband is the same frequency as the pulse frequency of the pulse generator 10, DC components due to external light and other noise components are removed, and only the output based on the projected light from the projector 9 is extracted. . This output is amplified by the amplifier 18 and applied to the frequency signal generator 21 to form a signal with a frequency corresponding to the magnitude of the output, and this signal is transmitted via the transmitter 22 to the power line 4.
Add to. Therefore, a signal with a frequency corresponding to the amount of light incident on the light receiver 16 from the light projector 9 is transmitted through the power supply line 4 and is applied to the receiver 11 in the light projector 1. Since this receiver 11 amplifies the signal and applies it to a frequency discriminator 12, a voltage, for example, of a magnitude corresponding to the frequency of the signal is sent from the discriminator and is applied to a display 13 consisting of an indicating voltmeter or the like. In other words, the pointer of the display 13 is from the emitter 9 to the receiver 1.
6 shows a deflection corresponding to the intensity of the light incident on the light receiver 6. By moving the optical axis of the emitter 9 in various ways and fixing it at the position where the deflection is maximum, the optical axis o in FIG. The projector 9 can be set to pass through 16. After performing this setting, the receiver 11, frequency discriminator 12, and display 13 in the light projector 1, and the frequency signal generator 21 in the light receiver 2
Then, the transmitter 22 and the like are disconnected from the power source to complete the setting operation and enter a normal alert state. That is, with the above settings, a sufficiently strong infrared pulsed light is always incident on the receiver 16 from the emitter 9;
When the infrared beam is interrupted by an intruder, the output of the amplifier 18 disappears and the level detector 1
A signal is sent from 9. Alarm 20 with this signal
operates to notify you of an intruder.
以上実施例について説明したように本考案の装
置は受光部に作業員を配置して、受光量の変化を
検出する等の必要がなく、投光部においてこれを
容易に知ることができる。従つて唯１人の作業員
によつて投光器の光軸調整を容易迅速で、しかも
正確に行い得ると共に電源線を利用して信号の伝
送を行うから、装置を簡単で安価に構成すること
ができる。 As described above in the embodiments, the apparatus of the present invention does not require a worker to be placed at the light receiving section to detect changes in the amount of received light, and this can be easily detected at the light projecting section. Therefore, the optical axis of the projector can be adjusted easily, quickly, and accurately by only one worker, and since the signal is transmitted using the power line, the device can be constructed easily and inexpensively. can.
第１図は本考案実施例の構成図、第２図は投光
器の縦断面略図、第３図は受光器の縦断面略図、
第４図は投光器の配光曲線図、第５図は受光器の
感度曲線である。なお図において、４は電源線、
７，１４は放物面反射鏡、８は光源、１５は光電
素子である。
Fig. 1 is a configuration diagram of an embodiment of the present invention, Fig. 2 is a schematic vertical cross-sectional view of the emitter, and Fig. 3 is a schematic vertical cross-sectional view of the receiver.
FIG. 4 is a light distribution curve diagram of the emitter, and FIG. 5 is a sensitivity curve of the light receiver. In the figure, 4 is the power line,
7 and 14 are parabolic reflecting mirrors, 8 is a light source, and 15 is a photoelectric element.
Claims (1)
赤外線ビームの投光器およびそのビームの受光器
と、上記受光器の出力が消滅したときこれを検出
して警報を発する警報器と、上記投光器および受
光器等を直流電源に接続する共通の電源線とより
なり、かつ前記受光器の出力の大きさに対応した
周波数の信号を上記電源線に加える送信器と、前
記投光器の設置箇所において電源線から上記信号
を抽出してその周波数を弁別する周波数弁別器お
よびこの周波数弁別器の出力信号により前記投光
器の設置方位を示すところの表示器とを具備した
対向式赤外線侵入者検知装置。 An infrared beam emitter and a receiver for the beam, which are installed facing each other across a warning range, an alarm that detects when the output of the receiver disappears and issues an alarm, and the emitter and the receiver. A transmitter that connects a common power line that connects devices, etc. to a DC power source, and that applies a signal with a frequency corresponding to the output size of the receiver to the power line, and a power line that connects the transmitter to the power line at the location where the emitter is installed. A facing type infrared intruder detection device comprising: a frequency discriminator that extracts the signal and discriminates its frequency; and a display that indicates the installation direction of the projector based on the output signal of the frequency discriminator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16520485U JPH0355909Y2 (en) | 1985-10-29 | 1985-10-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16520485U JPH0355909Y2 (en) | 1985-10-29 | 1985-10-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6273282U JPS6273282U (en) | 1987-05-11 |
| JPH0355909Y2 true JPH0355909Y2 (en) | 1991-12-13 |
Family
ID=31095024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16520485U Expired JPH0355909Y2 (en) | 1985-10-29 | 1985-10-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0355909Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2531524Y2 (en) * | 1987-09-02 | 1997-04-02 | 竹中エンジニアリング工業 株式会社 | Infrared detector |
-
1985
- 1985-10-29 JP JP16520485U patent/JPH0355909Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6273282U (en) | 1987-05-11 |
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