DE2312484A1 - Funkvorrichtung zum abtasten der bewegung von personen oder gegenstaenden in einem begrenzten raum - Google Patents
Funkvorrichtung zum abtasten der bewegung von personen oder gegenstaenden in einem begrenzten raumInfo
- Publication number
- DE2312484A1 DE2312484A1 DE2312484A DE2312484A DE2312484A1 DE 2312484 A1 DE2312484 A1 DE 2312484A1 DE 2312484 A DE2312484 A DE 2312484A DE 2312484 A DE2312484 A DE 2312484A DE 2312484 A1 DE2312484 A1 DE 2312484A1
- Authority
- DE
- Germany
- Prior art keywords
- circuit
- amplifier
- frequency
- output
- oscillator
- 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
- 230000033001 locomotion Effects 0.000 title claims description 19
- 230000008859 change Effects 0.000 claims description 26
- 230000004044 response Effects 0.000 claims description 10
- 238000005070 sampling Methods 0.000 claims description 9
- 239000003990 capacitor Substances 0.000 claims description 8
- 230000035945 sensitivity Effects 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 125000004122 cyclic group Chemical group 0.000 claims 1
- 238000004804 winding Methods 0.000 claims 1
- 230000007423 decrease Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000013459 approach Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 210000000056 organ Anatomy 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
- G01V3/101—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils by measuring the impedance of the search coil; by measuring features of a resonant circuit comprising the search coil
- G01V3/102—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils by measuring the impedance of the search coil; by measuring features of a resonant circuit comprising the search coil by measuring amplitude
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
- G08B13/26—Electrical actuation by proximity of an intruder causing variation in capacitance or inductance of a circuit
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geophysics (AREA)
- Burglar Alarm Systems (AREA)
- Transmitters (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7209800A FR2176499B1 (enrdf_load_stackoverflow) | 1972-03-21 | 1972-03-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2312484A1 true DE2312484A1 (de) | 1973-10-04 |
Family
ID=9095554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2312484A Pending DE2312484A1 (de) | 1972-03-21 | 1973-03-13 | Funkvorrichtung zum abtasten der bewegung von personen oder gegenstaenden in einem begrenzten raum |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3828335A (enrdf_load_stackoverflow) |
| DE (1) | DE2312484A1 (enrdf_load_stackoverflow) |
| FR (1) | FR2176499B1 (enrdf_load_stackoverflow) |
| GB (1) | GB1378280A (enrdf_load_stackoverflow) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1093655A (en) * | 1977-01-19 | 1981-01-13 | Martin T. Cole | Intrusion or movement detector |
| US4325058A (en) * | 1980-06-11 | 1982-04-13 | Gentex Corporation | Pre-intrusion detection and alarm system |
| US4380721A (en) * | 1980-12-29 | 1983-04-19 | Bullock John W | Proximity switch |
| JPS60111983A (ja) * | 1983-11-22 | 1985-06-18 | Honda Motor Co Ltd | 物体検知装置 |
| MY122034A (en) * | 1996-09-27 | 2006-03-31 | Inventio Ag | Identification system for an elevator installation |
| JP3409752B2 (ja) * | 1999-10-26 | 2003-05-26 | トヨタ自動車株式会社 | 移動物体検知装置、異常警報装置および積載室開放制御装置 |
| GB2455540A (en) * | 2007-12-13 | 2009-06-17 | Philip Hodgetts | Proximity sensing system to control electricity supply |
| KR20100130215A (ko) * | 2008-03-17 | 2010-12-10 | 파우워매트 엘티디. | 유도송전장치 |
| US11979201B2 (en) | 2008-07-02 | 2024-05-07 | Powermat Technologies Ltd. | System and method for coded communication signals regulating inductive power transmissions |
| US8981598B2 (en) | 2008-07-02 | 2015-03-17 | Powermat Technologies Ltd. | Energy efficient inductive power transmission system and method |
| ES2534702B1 (es) * | 2013-09-24 | 2016-02-09 | Ontech Security, Sl | Sensor de campos electrostáticos y sistema de seguridad en espacios interiores |
| US10511347B2 (en) * | 2017-11-14 | 2019-12-17 | Nxp B.V. | Device detection in contactless communication systems |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2152296A (en) * | 1936-09-21 | 1939-03-28 | Talking Advertising Corp | Advertising device |
| DE970232C (de) * | 1937-05-01 | 1958-08-28 | Emi Ltd | Anordnung zur Ankopplung einer Hochfrequenzquelle an einen Verbraucher |
| US3005191A (en) * | 1957-07-10 | 1961-10-17 | Mosler Res Products Inc | Security alarm system |
| US2992420A (en) * | 1957-11-08 | 1961-07-11 | Holmes Electric Protective Com | Capacity type burglar alarm systems |
| US3324647A (en) * | 1964-08-11 | 1967-06-13 | Parmet Company | Proximity detector |
| DE1566723A1 (de) * | 1967-04-13 | 1970-08-06 | Johannes Rode | Raumueberwachungsanlage |
| US3573783A (en) * | 1967-09-13 | 1971-04-06 | R F Controls Inc | Proximity sensor |
| US3495353A (en) * | 1968-09-23 | 1970-02-17 | Stanley Works | Door operating mechanism |
-
1972
- 1972-03-21 FR FR7209800A patent/FR2176499B1/fr not_active Expired
-
1973
- 1973-03-09 GB GB1151673A patent/GB1378280A/en not_active Expired
- 1973-03-13 DE DE2312484A patent/DE2312484A1/de active Pending
- 1973-03-15 US US00341744A patent/US3828335A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US3828335A (en) | 1974-08-06 |
| FR2176499B1 (enrdf_load_stackoverflow) | 1975-03-21 |
| GB1378280A (en) | 1974-12-27 |
| FR2176499A1 (enrdf_load_stackoverflow) | 1973-11-02 |
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