WO2009120671A3 - Electromagnetic field adjustment for proximity detection - Google Patents
Electromagnetic field adjustment for proximity detection Download PDFInfo
- Publication number
- WO2009120671A3 WO2009120671A3 PCT/US2009/038059 US2009038059W WO2009120671A3 WO 2009120671 A3 WO2009120671 A3 WO 2009120671A3 US 2009038059 W US2009038059 W US 2009038059W WO 2009120671 A3 WO2009120671 A3 WO 2009120671A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electromagnetic field
- proximity detection
- magnetic field
- field adjustment
- generating circuit
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
- G08B21/0205—Specific application combined with child monitoring using a transmitter-receiver system
- G08B21/0213—System disabling if a separation threshold is exceeded
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
- G08B21/0219—Circuit arrangements
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
- G08B21/0275—Electronic Article Surveillance [EAS] tag technology used for parent or child unit, e.g. same transmission technology, magnetic tag, RF tag, RFID
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
- G08B29/18—Prevention or correction of operating errors
- G08B29/20—Calibration, including self-calibrating arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F21/00—Variable inductances or transformers of the signal type
- H01F21/02—Variable inductances or transformers of the signal type continuously variable, e.g. variometers
- H01F21/06—Variable inductances or transformers of the signal type continuously variable, e.g. variometers by movement of core or part of core relative to the windings as a whole
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
- H01Q7/06—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/20—Electromagnets; Actuators including electromagnets without armatures
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
- H03K2217/9401—Calibration techniques
- H03K2217/94015—Mechanical, e.g. by displacement of a body, a shielding element, or a magnet, in or out of the sensing area
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
- H03K2217/945—Proximity switches
- H03K2217/95—Proximity switches using a magnetic detector
- H03K2217/958—Proximity switches using a magnetic detector involving transponders
Abstract
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2009228472A AU2009228472B2 (en) | 2008-03-24 | 2009-03-24 | Electromagnetic field adjustment for proximity detection |
EP09725086.4A EP2269177A4 (en) | 2008-03-24 | 2009-03-24 | Electromagnetic field adjustment for proximity detection |
ZA2010/06816A ZA201006816B (en) | 2008-03-24 | 2010-09-23 | Electromagnetic field adjustment for proximity detection |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US6473308P | 2008-03-24 | 2008-03-24 | |
US61/064,733 | 2008-03-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2009120671A2 WO2009120671A2 (en) | 2009-10-01 |
WO2009120671A3 true WO2009120671A3 (en) | 2009-12-30 |
Family
ID=41114631
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2009/038059 WO2009120671A2 (en) | 2008-03-24 | 2009-03-24 | Electromagnetic field adjustment for proximity detection |
Country Status (5)
Country | Link |
---|---|
US (3) | US8169335B2 (en) |
EP (1) | EP2269177A4 (en) |
AU (1) | AU2009228472B2 (en) |
WO (1) | WO2009120671A2 (en) |
ZA (1) | ZA201006816B (en) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8169335B2 (en) * | 2008-03-24 | 2012-05-01 | Strata Proximity Systems, Llc | Electromagnetic field adjustment for proximity detection |
US20110050444A1 (en) * | 2009-08-31 | 2011-03-03 | Robert E. Stull | Person/Worker/Device Proximity Warning System |
US8908034B2 (en) * | 2011-01-23 | 2014-12-09 | James Bordonaro | Surveillance systems and methods to monitor, recognize, track objects and unusual activities in real time within user defined boundaries in an area |
WO2013022877A1 (en) | 2011-08-08 | 2013-02-14 | Strata Proximity Systems, Llc | Proximity detection system with concurrent rf and magnetic fields |
US9415976B2 (en) * | 2012-05-10 | 2016-08-16 | Trimble Navigation Limited | Crane collision avoidance |
EP2946372A4 (en) * | 2013-01-09 | 2016-09-28 | Frederick Energy Products Llc | Mechanized area controller |
US9712949B2 (en) * | 2013-06-07 | 2017-07-18 | Strata Products Worldwide, Llc | Method and apparatus for protecting a miner |
AU2014292821B2 (en) * | 2013-07-15 | 2018-10-04 | Industrea Mining Technology Pty Ltd | Low-frequency magnetic field synchronisation for proximity detection systems |
MX352765B (en) * | 2013-07-18 | 2017-12-07 | Method and apparatus for protecting a miner. | |
PE20161142A1 (en) | 2014-03-24 | 2016-10-29 | Mine Site Tech Pty Ltd | AN INDUCTOR, A RELATED MANUFACTURING METHOD, A TRANSMITTER INCLUDING SAID INDUCTOR AND A RELATED PROXIMITY DETECTION SYSTEM |
US9780780B2 (en) * | 2014-08-22 | 2017-10-03 | Rockwell Automation Technologies, Inc. | Inductive sensing systems and methods based on multiple frequencies |
US9761143B2 (en) * | 2014-09-12 | 2017-09-12 | Strata Safety Products, Llc | Proximity detection system with approach zone |
PL226289B1 (en) | 2014-12-22 | 2017-07-31 | Ente Spółka Z Ograniczoną Odpowiedzialnością | Proximity system for protecting the zone of work with mobile equipment |
AU2017203411A1 (en) * | 2016-06-01 | 2017-12-21 | Strata Products Worldwide, Llc | Method and apparatus for identifying when an idividual is in proximity to an object |
KR101816414B1 (en) * | 2016-06-21 | 2018-01-08 | 현대자동차주식회사 | Antenna System using motion sensor and Method for operating thereof |
US10591627B2 (en) * | 2016-11-08 | 2020-03-17 | Frederick Energy Products, Llc | Managing vehicle movement in aisles by use of magnetic vectors |
US11259413B2 (en) | 2018-04-05 | 2022-02-22 | Abb Power Electronics Inc. | Inductively balanced power supply circuit and method of manufacture |
US10565842B2 (en) * | 2018-04-16 | 2020-02-18 | Tyco Fire & Security Gmbh | Method and device for omnidirectional and anti-sabotage anti-tampering detection |
WO2021194904A1 (en) * | 2020-03-22 | 2021-09-30 | Frederick Mobile Instrumentation, Llc | Dock area control system |
US20230219796A1 (en) * | 2022-01-12 | 2023-07-13 | Dell Products L.P. | Two-level edge-based hazard alert system based on trajectory prediction |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2957115A (en) * | 1960-10-18 | Electrical measuring and control servosystem | ||
US3064257A (en) * | 1958-02-14 | 1962-11-13 | James D Guest | Antenna with adjustable tuning reactance |
US4818855A (en) * | 1985-01-11 | 1989-04-04 | Indala Corporation | Identification system |
US20030227268A1 (en) * | 2002-02-21 | 2003-12-11 | Smith James F. | Zero ripple linear motor system |
US6724191B1 (en) * | 2000-05-09 | 2004-04-20 | Admiralty Corporation | Systems and methods useful for detecting presence and/or location of various materials |
US20060087443A1 (en) * | 2004-09-24 | 2006-04-27 | Frederick Larry D | Safety system for mining equipment |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
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US3926792A (en) * | 1973-08-23 | 1975-12-16 | Recon Corp | Apparatus and method for automatically separating magnetic from non-magnetic substances |
FR2254079B1 (en) * | 1973-12-07 | 1979-03-16 | France Etat | |
DE3137928C1 (en) * | 1981-09-24 | 1983-03-31 | Pepperl & Fuchs Gmbh & Co Kg, 6800 Mannheim | Coil core for a proximity switch |
US4947759A (en) * | 1988-12-02 | 1990-08-14 | Tele Engineering, Inc. | Proximity control system |
US5202863A (en) * | 1990-09-11 | 1993-04-13 | Matsushita Electric Industrial Co., Ltd. | Magneto-optical disk unit compatible with different two types of magneto-optical disks and a magnetic-field generator suitable thereof |
US5351004A (en) * | 1991-10-15 | 1994-09-27 | Eldec Corporation | Saturable core proximity sensor including a flux director and a magnetic target element |
US5532681A (en) * | 1993-05-26 | 1996-07-02 | Bodysonics, Inc. | Protection device for power frequency magnetic fields |
US5793175A (en) * | 1995-01-19 | 1998-08-11 | Textron Inc. | Performance event sensing for control of electric motor driven golf car |
JPH08335876A (en) * | 1995-06-09 | 1996-12-17 | Fujitsu Ltd | Rubidium atomic oscillator |
US6242908B1 (en) * | 1996-01-17 | 2001-06-05 | Allegro Microsystems, Inc. | Detection of passing magnetic articles while adapting the detection threshold |
US5939986A (en) | 1996-10-18 | 1999-08-17 | The United States Of America As Represented By The United States Department Of Energy | Mobile machine hazardous working zone warning system |
US6331744B1 (en) * | 1998-02-10 | 2001-12-18 | Light Sciences Corporation | Contactless energy transfer apparatus |
US6879300B2 (en) * | 2000-02-08 | 2005-04-12 | Cms Partners, Inc. | Wireless boundary proximity determining and animal containment system and method |
US6810353B2 (en) | 2000-10-26 | 2004-10-26 | The United States Of America As Represented By The Secretary Of The Department Of Health And Human Services, Centers For Disease Control | Non-directional magnet field based proximity receiver with multiple warning and machine shutdown capability |
DE102004049024B3 (en) * | 2004-09-20 | 2006-04-13 | K.A. Schmersal Holding Kg | Position monitoring device |
US20070108297A1 (en) * | 2005-11-14 | 2007-05-17 | Bates Colin D | Adaptation of transponder card performance to available power |
US8169335B2 (en) * | 2008-03-24 | 2012-05-01 | Strata Proximity Systems, Llc | Electromagnetic field adjustment for proximity detection |
-
2009
- 2009-03-24 US US12/409,809 patent/US8169335B2/en active Active
- 2009-03-24 AU AU2009228472A patent/AU2009228472B2/en active Active
- 2009-03-24 EP EP09725086.4A patent/EP2269177A4/en not_active Withdrawn
- 2009-03-24 WO PCT/US2009/038059 patent/WO2009120671A2/en active Application Filing
-
2010
- 2010-09-23 ZA ZA2010/06816A patent/ZA201006816B/en unknown
-
2012
- 2012-04-13 US US13/446,420 patent/US8552882B2/en active Active
-
2013
- 2013-09-20 US US14/032,752 patent/US9153118B2/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2957115A (en) * | 1960-10-18 | Electrical measuring and control servosystem | ||
US3064257A (en) * | 1958-02-14 | 1962-11-13 | James D Guest | Antenna with adjustable tuning reactance |
US4818855A (en) * | 1985-01-11 | 1989-04-04 | Indala Corporation | Identification system |
US6724191B1 (en) * | 2000-05-09 | 2004-04-20 | Admiralty Corporation | Systems and methods useful for detecting presence and/or location of various materials |
US20030227268A1 (en) * | 2002-02-21 | 2003-12-11 | Smith James F. | Zero ripple linear motor system |
US20060087443A1 (en) * | 2004-09-24 | 2006-04-27 | Frederick Larry D | Safety system for mining equipment |
Also Published As
Publication number | Publication date |
---|---|
US20120249318A1 (en) | 2012-10-04 |
US20140125488A1 (en) | 2014-05-08 |
EP2269177A4 (en) | 2014-01-22 |
US20090256715A1 (en) | 2009-10-15 |
WO2009120671A2 (en) | 2009-10-01 |
AU2009228472B2 (en) | 2014-09-11 |
US8169335B2 (en) | 2012-05-01 |
AU2009228472A1 (en) | 2009-10-01 |
EP2269177A2 (en) | 2011-01-05 |
ZA201006816B (en) | 2011-08-31 |
US9153118B2 (en) | 2015-10-06 |
US8552882B2 (en) | 2013-10-08 |
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