IT988314B - Rilevatore di prossimita a scopo di segnalazione allarme o simile - Google Patents
Rilevatore di prossimita a scopo di segnalazione allarme o simileInfo
- Publication number
- IT988314B IT988314B IT67770/71A IT6777071A IT988314B IT 988314 B IT988314 B IT 988314B IT 67770/71 A IT67770/71 A IT 67770/71A IT 6777071 A IT6777071 A IT 6777071A IT 988314 B IT988314 B IT 988314B
- Authority
- IT
- Italy
- Prior art keywords
- similar
- proximity detector
- alarm signaling
- signaling
- alarm
- Prior art date
Links
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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/945—Proximity switches
- H03K17/95—Proximity switches using a magnetic detector
- H03K17/9505—Constructional details
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/945—Proximity switches
- H03K17/95—Proximity switches using a magnetic detector
- H03K17/952—Proximity switches using a magnetic detector using inductive coils
- H03K17/9522—Proximity switches using a magnetic detector using inductive coils with a galvanically isolated probe
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/945—Proximity switches
- H03K17/95—Proximity switches using a magnetic detector
- H03K17/952—Proximity switches using a magnetic detector using inductive coils
- H03K17/9537—Proximity switches using a magnetic detector using inductive coils in a resonant circuit
- H03K17/954—Proximity switches using a magnetic detector using inductive coils in a resonant circuit controlled by an oscillatory signal
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Remote Sensing (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Electromagnetism (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
- Geophysics And Detection Of Objects (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB00567/70A GB1270346A (en) | 1970-03-05 | 1970-03-05 | Proximity switch |
Publications (1)
Publication Number | Publication Date |
---|---|
IT988314B true IT988314B (it) | 1975-04-10 |
Family
ID=9970233
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT67770/71A IT988314B (it) | 1970-03-05 | 1971-03-04 | Rilevatore di prossimita a scopo di segnalazione allarme o simile |
Country Status (4)
Country | Link |
---|---|
US (1) | US3719898A (it) |
FR (1) | FR2084172A6 (it) |
GB (1) | GB1270346A (it) |
IT (1) | IT988314B (it) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH663303A5 (de) * | 1983-06-09 | 1987-11-30 | Lead Electric Corp | Hochfrequenz-annaeherungsschalter. |
JP3007413B2 (ja) * | 1989-04-14 | 2000-02-07 | イージェイエイ・エンジニアリング・パブリック・リミテッド・カンパニー | 安全スイッチ装置 |
EP1264403B1 (de) * | 2000-03-02 | 2007-10-17 | Abb Research Ltd. | Näherungssensor und baukastensystem zur bildung von näherungssensoren |
DE102006003993A1 (de) * | 2006-01-24 | 2007-07-26 | Balluff Gmbh | Sensorvorrichtung |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2379664A (en) * | 1942-08-29 | 1945-07-03 | Rca Corp | Electrical connector for loudspeakers and the like |
US3013256A (en) * | 1957-05-01 | 1961-12-12 | Acoustica Associates Inc | Electronic apparatus for sensing the presence or absence of material |
GB1118235A (en) * | 1965-11-23 | 1968-06-26 | Tateisi Electronics Company | A proximity switch |
GB1173186A (en) * | 1967-03-23 | 1969-12-03 | Square D Co | Proximity Switch |
US3601691A (en) * | 1969-09-29 | 1971-08-24 | Robert F Gardiner | Metal detector responsive to small metallic objects for differentiating between ferrous and nonferrous objects |
-
1970
- 1970-03-05 GB GB00567/70A patent/GB1270346A/en not_active Expired
-
1971
- 1971-01-22 US US00108915A patent/US3719898A/en not_active Expired - Lifetime
- 1971-03-04 FR FR7107438A patent/FR2084172A6/fr not_active Expired
- 1971-03-04 IT IT67770/71A patent/IT988314B/it active
Also Published As
Publication number | Publication date |
---|---|
DE2110514B2 (de) | 1972-09-21 |
DE2110514A1 (de) | 1971-12-16 |
GB1270346A (en) | 1972-04-12 |
US3719898A (en) | 1973-03-06 |
FR2084172A6 (it) | 1971-12-17 |
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