DE68920736D1 - Eindringdetektor, der elektromagnetische wellen verwendet. - Google Patents
Eindringdetektor, der elektromagnetische wellen verwendet.Info
- Publication number
- DE68920736D1 DE68920736D1 DE68920736T DE68920736T DE68920736D1 DE 68920736 D1 DE68920736 D1 DE 68920736D1 DE 68920736 T DE68920736 T DE 68920736T DE 68920736 T DE68920736 T DE 68920736T DE 68920736 D1 DE68920736 D1 DE 68920736D1
- Authority
- DE
- Germany
- Prior art keywords
- sufficiently
- emitter
- signal
- aerial
- conductive
- 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 - Lifetime
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
- G08B13/24—Electrical actuation by interference with electromagnetic field distribution
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Burglar Alarm Systems (AREA)
- Radar Systems Or Details Thereof (AREA)
- Geophysics And Detection Of Objects (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8803201A FR2628556A1 (fr) | 1988-03-11 | 1988-03-11 | Detection de modification d'un volume par un corps conducteur |
PCT/FR1989/000093 WO1989008903A1 (fr) | 1988-03-11 | 1989-03-08 | Detecteur d'intrus a ondes hertziennes |
Publications (1)
Publication Number | Publication Date |
---|---|
DE68920736D1 true DE68920736D1 (de) | 1995-03-02 |
Family
ID=9364194
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE68920736T Expired - Lifetime DE68920736D1 (de) | 1988-03-11 | 1989-03-08 | Eindringdetektor, der elektromagnetische wellen verwendet. |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0408595B1 (fr) |
AT (1) | ATE117448T1 (fr) |
DE (1) | DE68920736D1 (fr) |
FR (1) | FR2628556A1 (fr) |
WO (1) | WO1989008903A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NZ273549A (en) * | 1993-09-14 | 1996-12-20 | John Ferdinand Muehlebach | Movement detection; method and apparatus for detecting flying animals using microwave transmitted signal |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3863240A (en) * | 1972-12-08 | 1975-01-28 | Aerospace Res | Electromagnetic intrusion detection system |
DK135353B (da) * | 1974-11-07 | 1977-04-12 | Schloeer Boerge | Anlæg til detektering af bevægelige objekter inden for et overvåget område ved mikrobølgediffraktion. |
DE2806448C2 (de) * | 1978-02-15 | 1985-01-10 | Brown, Boveri & Cie Ag, 6800 Mannheim | System zur Objektsicherung und zum Personenschutz mittels einer Mikrowellenschranke |
US4334214A (en) * | 1979-06-29 | 1982-06-08 | Yagi Antenna Co., Ltd. | Warning apparatus using microwaves |
FR2578077A1 (fr) * | 1985-02-27 | 1986-08-29 | Alsthom Cgee | Procede et dispositif de detection d'intrusion a barriere hyperfrequence |
DE3525976A1 (de) * | 1985-07-20 | 1987-01-29 | Bbc Brown Boveri & Cie | Verfahren zur objektsicherung |
-
1988
- 1988-03-11 FR FR8803201A patent/FR2628556A1/fr not_active Withdrawn
-
1989
- 1989-03-08 DE DE68920736T patent/DE68920736D1/de not_active Expired - Lifetime
- 1989-03-08 WO PCT/FR1989/000093 patent/WO1989008903A1/fr active IP Right Grant
- 1989-03-08 EP EP89903178A patent/EP0408595B1/fr not_active Expired - Lifetime
- 1989-03-08 AT AT89903178T patent/ATE117448T1/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
ATE117448T1 (de) | 1995-02-15 |
FR2628556A1 (fr) | 1989-09-15 |
EP0408595A1 (fr) | 1991-01-23 |
WO1989008903A1 (fr) | 1989-09-21 |
EP0408595B1 (fr) | 1995-01-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8332 | No legal effect for de |