AU513608B2 - Intrusion detector - Google Patents
Intrusion detectorInfo
- Publication number
- AU513608B2 AU513608B2 AU30554/77A AU3055477A AU513608B2 AU 513608 B2 AU513608 B2 AU 513608B2 AU 30554/77 A AU30554/77 A AU 30554/77A AU 3055477 A AU3055477 A AU 3055477A AU 513608 B2 AU513608 B2 AU 513608B2
- Authority
- AU
- Australia
- Prior art keywords
- intrusion detector
- intrusion
- detector
- 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
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/16—Actuation by interference with mechanical vibrations in air or other fluid
- G08B13/1609—Actuation by interference with mechanical vibrations in air or other fluid using active vibration detection systems
- G08B13/1618—Actuation by interference with mechanical vibrations in air or other fluid using active vibration detection systems using ultrasonic detection means
- G08B13/1627—Actuation by interference with mechanical vibrations in air or other fluid using active vibration detection systems using ultrasonic detection means using Doppler shift detection circuits
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/50—Systems of measurement based on relative movement of target
- G01S13/52—Discriminating between fixed and moving objects or between objects moving at different speeds
- G01S13/56—Discriminating between fixed and moving objects or between objects moving at different speeds for presence detection
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU30554/77A AU513608B2 (en) | 1976-11-10 | 1976-11-10 | Intrusion detector |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU807476 | 1976-11-10 | ||
| AU30554/77A AU513608B2 (en) | 1976-11-10 | 1976-11-10 | Intrusion detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU3055477A AU3055477A (en) | 1979-05-17 |
| AU513608B2 true AU513608B2 (en) | 1980-12-11 |
Family
ID=25612727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU30554/77A Expired AU513608B2 (en) | 1976-11-10 | 1976-11-10 | Intrusion detector |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU513608B2 (en) |
-
1976
- 1976-11-10 AU AU30554/77A patent/AU513608B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| AU3055477A (en) | 1979-05-17 |
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