JPH0184183U - - Google Patents
Info
- Publication number
- JPH0184183U JPH0184183U JP1987176971U JP17697187U JPH0184183U JP H0184183 U JPH0184183 U JP H0184183U JP 1987176971 U JP1987176971 U JP 1987176971U JP 17697187 U JP17697187 U JP 17697187U JP H0184183 U JPH0184183 U JP H0184183U
- Authority
- JP
- Japan
- Prior art keywords
- light
- detection device
- active optical
- predetermined frequency
- intruder detection
- 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.)
- Pending
Links
Landscapes
- Burglar Alarm Systems (AREA)
Description
第１図はこの発明の一実施例の能動型光式侵入
者検知装置の構成説明図、第２図は周波数Ｆの設
定可能な範囲を示す模式図である。
（符号の説明）、１……能動型光式侵入者検知
装置、１０……光源部、１１……発振器、１３…
…ＬＥＤ、２０……光検出部、２１……フオトダ
イオード、２４……ＬＰＦ。
FIG. 1 is an explanatory diagram of the configuration of an active optical intruder detection device according to an embodiment of the present invention, and FIG. 2 is a schematic diagram showing the range in which the frequency F can be set. (Explanation of symbols), 1... Active optical intruder detection device, 10... Light source section, 11... Oscillator, 13...
...LED, 20...photodetector, 21...photodiode, 24...LPF.
補正 昭６３．３．６
図面の簡単な説明を次のように補正する。
明細書第７ページ第５行目の「発明」を、「考
案」に訂正する。Amendment March 6, 1981 The brief description of the drawing is amended as follows. "Invention" on page 7, line 5 of the specification is corrected to "device."
Claims (1)
、その光を検出する光検出部とを有する能動型光
式侵入者検知装置において、前記所定周波数Ｆを
、電灯線周波数ｆの高調波ｎｆ（ｎは自然数）に
対してｎｆ±３Ｈｚの範囲外に設定したことを特
徴とする能動型光式侵入者検知装置。 In an active optical intruder detection device having a light source section that emits light modulated at a predetermined frequency F and a light detection section that detects the light, the predetermined frequency F is converted to a harmonic nf ( An active optical intruder detection device characterized in that the frequency is set outside the range of nf±3Hz (n is a natural number).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987176971U JPH0184183U (en) | 1987-11-20 | 1987-11-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987176971U JPH0184183U (en) | 1987-11-20 | 1987-11-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0184183U true JPH0184183U (en) | 1989-06-05 |
Family
ID=31468661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987176971U Pending JPH0184183U (en) | 1987-11-20 | 1987-11-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0184183U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03154198A (en) * | 1989-11-10 | 1991-07-02 | Teiou Tsushin Kogyo Kk | Burglar preventing machine and equipment used therefor |
-
1987
- 1987-11-20 JP JP1987176971U patent/JPH0184183U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03154198A (en) * | 1989-11-10 | 1991-07-02 | Teiou Tsushin Kogyo Kk | Burglar preventing machine and equipment used therefor |
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