DE2336797A1 - Elektronische schutz- und wahrnehmungseinrichtung - Google Patents

Elektronische schutz- und wahrnehmungseinrichtung

Info

Publication number
DE2336797A1
DE2336797A1 DE19732336797 DE2336797A DE2336797A1 DE 2336797 A1 DE2336797 A1 DE 2336797A1 DE 19732336797 DE19732336797 DE 19732336797 DE 2336797 A DE2336797 A DE 2336797A DE 2336797 A1 DE2336797 A1 DE 2336797A1
Authority
DE
Germany
Prior art keywords
output
bridge
antenna
signal
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
Application number
DE19732336797
Other languages
German (de)
English (en)
Inventor
Leon John Siegel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Weldotron Corp
Original Assignee
Weldotron Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Weldotron Corp filed Critical Weldotron Corp
Publication of DE2336797A1 publication Critical patent/DE2336797A1/de
Pending legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • H03K17/955—Proximity switches using a capacitive detector
    • 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
    • H03K2217/96—Touch switches
    • H03K2217/9607—Capacitive touch switches
    • H03K2217/960735—Capacitive touch switches characterised by circuit details
    • H03K2217/96075—Capacitive touch switches characterised by circuit details involving bridge circuit

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
  • Geophysics And Detection Of Objects (AREA)
DE19732336797 1972-07-21 1973-07-17 Elektronische schutz- und wahrnehmungseinrichtung Pending DE2336797A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US27369272A 1972-07-21 1972-07-21
US00370783A US3836828A (en) 1972-07-21 1973-06-18 Electronic protection and sensing apparatus

Publications (1)

Publication Number Publication Date
DE2336797A1 true DE2336797A1 (de) 1974-01-31

Family

ID=26956367

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19732336797 Pending DE2336797A1 (de) 1972-07-21 1973-07-17 Elektronische schutz- und wahrnehmungseinrichtung

Country Status (5)

Country Link
US (1) US3836828A (cs)
JP (1) JPS4992996A (cs)
DE (1) DE2336797A1 (cs)
FR (1) FR2194008B3 (cs)
IT (1) IT992661B (cs)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4001536A (en) * 1975-02-14 1977-01-04 Hobart Corporation Microwave oven controls
US4021679A (en) * 1975-10-22 1977-05-03 Fred Bolle Method and apparatus for automatic switching
US4144529A (en) * 1977-05-20 1979-03-13 George B. Miller Remotely responsive motion detector
US4162042A (en) * 1977-05-27 1979-07-24 Graco Inc. Spray gun safety sensor
US4280164A (en) * 1979-07-24 1981-07-21 Ims Ltd. Fail-safe relay system
US4359626A (en) * 1980-03-18 1982-11-16 Potter Bronson M Electric blanket heating control with capacitance sensing
EP0158593B1 (de) * 1984-04-09 1989-05-24 GET Gesellschaft für Elektronik-Technologie mbH Elektronische Warn- und Überwachungseinrichtung für Handhabungsvorrichtungen
US4684931A (en) * 1985-05-14 1987-08-04 Sydney Parks Capacitive sensing security system
US5081406A (en) * 1990-06-26 1992-01-14 Saf-T-Margin, Inc. Proximity responsive capacitance sensitive method, system, and associated electrical circuitry for use in controlling mechanical and electro-mechanical equipment
US5796341A (en) * 1995-08-30 1998-08-18 Stratiotis; Gus Safety and security system for work area
JPH11512803A (ja) * 1995-09-25 1999-11-02 セレンセン，イェルン 第１物体と第２物体の間の距離を検知する方法及び装置
WO1998007051A1 (en) * 1996-08-14 1998-02-19 Breed Automotive Technology, Inc. Phase shift detection and measurement circuit for capacitive sensor
US5755923A (en) * 1996-11-26 1998-05-26 Owens-Corning Fiberglas Technology, Inc. Heat seal apparatus
FR2765333B1 (fr) * 1997-06-27 1999-10-01 Canon Kk Procede et dispositif de suivi de la consommation d'un produit, par exemple une encre d'impression, utilisant un filtre passe-bas
ITTO980452A1 (it) * 1998-05-26 1999-11-26 Elvis Sas Di Zannier Gian Carl Dispositivo e metodo di rilevamento della presenza del corpo umano.
US6592067B2 (en) 2001-02-09 2003-07-15 Georgia-Pacific Corporation Minimizing paper waste carousel-style dispenser apparatus, sensor, method and system with proximity sensor
US7102366B2 (en) 2001-02-09 2006-09-05 Georgia-Pacific Corporation Proximity detection circuit and method of detecting capacitance changes
US20060181834A1 (en) * 2005-02-17 2006-08-17 Gerardo Becerra Knob for trimmer capacitors
WO2007098419A2 (en) * 2006-02-18 2007-08-30 Georgia-Pacific Consumer Products Lp Electronic dispenser for dispensing sheet products
US7878446B2 (en) * 2006-10-20 2011-02-01 Georgia-Pacific Consumer Products Lp Dispenser housing with motorized roller transport
US20090322351A1 (en) * 2008-06-27 2009-12-31 Mcleod Scott C Adaptive Capacitive Sensing
EP3815606A1 (en) * 2019-10-28 2021-05-05 Koninklijke Philips N.V. A sensing unit for measuring stimuli in a body
DE112020005707T5 (de) 2019-11-18 2022-09-08 Analog Devices, Inc. Brückenbasiertes Impedanzsensorsystem

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3235857A (en) * 1960-09-14 1966-02-15 Specialties Dev Corp Condition responsive system having means responsive to a negative or positive rate of change of a detected signal
US3109893A (en) * 1961-01-03 1963-11-05 Automatic Elect Lab Proximity operated loudspeaking telephone
GB1119936A (en) * 1966-07-01 1968-07-17 Electronic Machine Control Sal Improvements in protection systems and apparatus
US3493954A (en) * 1967-02-01 1970-02-03 Bliss Co Object detection system
US3551919A (en) * 1967-11-17 1971-01-05 American Standard Inc Antenna system for proximity control
US3497995A (en) * 1968-04-19 1970-03-03 Stanley Works Height sensitive proximity door operator system

Also Published As

Publication number Publication date
US3836828A (en) 1974-09-17
IT992661B (it) 1975-09-30
FR2194008A1 (cs) 1974-02-22
FR2194008B3 (cs) 1976-07-09
JPS4992996A (cs) 1974-09-04

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