JPS6439596U - - Google Patents
Info
- Publication number
- JPS6439596U JPS6439596U JP13427787U JP13427787U JPS6439596U JP S6439596 U JPS6439596 U JP S6439596U JP 13427787 U JP13427787 U JP 13427787U JP 13427787 U JP13427787 U JP 13427787U JP S6439596 U JPS6439596 U JP S6439596U
- Authority
- JP
- Japan
- Prior art keywords
- optical signal
- reference optical
- warning
- reflected
- time
- 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
- 230000003287 optical effect Effects 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 3
- 239000013307 optical fiber Substances 0.000 claims description 2
- 230000002159 abnormal effect Effects 0.000 claims 1
- 230000005856 abnormality Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Emergency Alarm Devices (AREA)
Description
第１図は本考案に係る警報装置を半ドア警告装
置に適用した概略図、第２図は検出部の詳細図、
第３図は基準光信号と反射光信号の関係を示す説
明図および第４図は従来の半ドア警告装置の概略
図である。
１……発光素子駆動回路、２……光フアイバケ
ーブル、３……方向性結合器、４……発光素子（
基準光信号送出手段）、５……受光素子（反射光
受信手段）、６……治具、７……信号処理回路、
８……警告手段、Ａ〜Ｄ……検出部。
FIG. 1 is a schematic diagram of the alarm device according to the present invention applied to a door ajar warning device, and FIG. 2 is a detailed diagram of the detection unit.
FIG. 3 is an explanatory diagram showing the relationship between the reference optical signal and the reflected optical signal, and FIG. 4 is a schematic diagram of a conventional door ajar warning device. 1... Light emitting element drive circuit, 2... Optical fiber cable, 3... Directional coupler, 4... Light emitting element (
reference optical signal transmitting means), 5... light receiving element (reflected light receiving means), 6... jig, 7... signal processing circuit,
8... Warning means, A to D... detection section.
Claims (1)
する手段とを有する光フアイバケーブルと、 前記光フアイバケーブルに設けられ、かつ異常
状態検出箇所に設置され、異常時または正常時に
基準光信号の少なくとも一部を反射させて反射光
信号を発生させる検出部と、 基準光信号の送出時から所定時間後に反射光信
号の有無により異常状態または正常状態を検出す
る信号処理回路と、 前記信号処理回路が異常を検出したとき警告を
発する警告手段と、 からなることを特徴とする警報装置。[Scope of Claim for Utility Model Registration] An optical fiber cable having means for transmitting a reference optical signal and means for receiving a reflected optical signal; or a detection unit that generates a reflected optical signal by reflecting at least a portion of the reference optical signal during normal operation; and signal processing that detects an abnormal state or a normal state based on the presence or absence of the reflected optical signal after a predetermined period of time from the time when the reference optical signal is sent. An alarm device comprising: a circuit; and warning means for issuing a warning when the signal processing circuit detects an abnormality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13427787U JPS6439596U (en) | 1987-09-02 | 1987-09-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13427787U JPS6439596U (en) | 1987-09-02 | 1987-09-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6439596U true JPS6439596U (en) | 1989-03-09 |
Family
ID=31392889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13427787U Pending JPS6439596U (en) | 1987-09-02 | 1987-09-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6439596U (en) |
-
1987
- 1987-09-02 JP JP13427787U patent/JPS6439596U/ja active Pending
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