GB1270346A - Proximity switch - Google Patents
Proximity switchInfo
- Publication number
- GB1270346A GB1270346A GB00567/70A GB1056770A GB1270346A GB 1270346 A GB1270346 A GB 1270346A GB 00567/70 A GB00567/70 A GB 00567/70A GB 1056770 A GB1056770 A GB 1056770A GB 1270346 A GB1270346 A GB 1270346A
- Authority
- GB
- United Kingdom
- Prior art keywords
- proximity switch
- attachment
- search coils
- transformer
- remote
- 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
- 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)
- Geophysics And Detection Of Objects (AREA)
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
1,270,346. Alarm systems. SQUARE D CO. 5 March, 1970, No. 10567/70. Addition to 1,173,186. Heading G4N. [Also in Division G1] The invention comprises a transformer-action ADAPTOR-ATTACHMENT to enable other transducers to be used locally or remotely to operate a proximity switch. A coupling coil in a housing is provided for attachment to the parent proximity switch so that it co-operates with the sensor coil as a transformer secondary connected to an outlet socket for (i) larger plugin search coils or (ii) remote cable connected search coils, or (iii) other transducer varying the loading on the oscillator, such as thermistor, photo-conductive cell, variable capacitor or inductor. Two or more remote heads may be connected in series or parallel to provide an AND/OR function, Fig. 16 (not shown).
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB00567/70A GB1270346A (en) | 1970-03-05 | 1970-03-05 | Proximity switch |
US00108915A US3719898A (en) | 1970-03-05 | 1971-01-22 | Oscillator proximity detector with removable interchangeable sensing heads |
IT67770/71A IT988314B (en) | 1970-03-05 | 1971-03-04 | PROXIMITY DETECTOR FOR THE PURPOSE OF ALARM SIGNALING OR SIMILAR |
FR7107438A FR2084172A6 (en) | 1970-03-05 | 1971-03-04 | |
DE19712110514 DE2110514C (en) | 1970-03-05 | 1971-03-05 | Locator for electrically conductive objects |
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 |
---|---|
GB1270346A true GB1270346A (en) | 1972-04-12 |
Family
ID=9970233
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB00567/70A Expired GB1270346A (en) | 1970-03-05 | 1970-03-05 | Proximity switch |
Country Status (4)
Country | Link |
---|---|
US (1) | US3719898A (en) |
FR (1) | FR2084172A6 (en) |
GB (1) | GB1270346A (en) |
IT (1) | IT988314B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3420920A1 (en) * | 1983-06-09 | 1985-03-21 | Lead Electric Corp., Suita | APPROXIMATE SWITCH OF THE HIGH-FREQUENCY VIBRATION DESIGN |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE177882T1 (en) * | 1989-04-14 | 1999-04-15 | Eja Eng Plc | SAFETY SWITCH ARRANGEMENT |
AU2001237403A1 (en) * | 2000-03-02 | 2001-09-12 | Abb Research Ltd | Proximity sensor and modular system for producing proximity sensors |
DE102006003993A1 (en) * | 2006-01-24 | 2007-07-26 | Balluff Gmbh | sensor device |
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/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3420920A1 (en) * | 1983-06-09 | 1985-03-21 | Lead Electric Corp., Suita | APPROXIMATE SWITCH OF THE HIGH-FREQUENCY VIBRATION DESIGN |
Also Published As
Publication number | Publication date |
---|---|
US3719898A (en) | 1973-03-06 |
DE2110514B2 (en) | 1972-09-21 |
IT988314B (en) | 1975-04-10 |
FR2084172A6 (en) | 1971-12-17 |
DE2110514A1 (en) | 1971-12-16 |
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