SE8007903L - Intrangsdetektoranleggning - Google Patents

Intrangsdetektoranleggning

Info

Publication number
SE8007903L
SE8007903L SE8007903A SE8007903A SE8007903L SE 8007903 L SE8007903 L SE 8007903L SE 8007903 A SE8007903 A SE 8007903A SE 8007903 A SE8007903 A SE 8007903A SE 8007903 L SE8007903 L SE 8007903L
Authority
SE
Sweden
Prior art keywords
wires
tube
electrically conductive
length
electret
Prior art date
Application number
SE8007903A
Other languages
Unknown language ( )
English (en)
Inventor
L R Wold
Original Assignee
Honeywell Inc
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 Honeywell Inc filed Critical Honeywell Inc
Publication of SE8007903L publication Critical patent/SE8007903L/sv

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R19/00—Electrostatic transducers
    • H04R19/01—Electrostatic transducers characterised by the use of electrets
    • H04R19/016—Electrostatic transducers characterised by the use of electrets for microphones
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/16—Actuation by interference with mechanical vibrations in air or other fluid
    • G08B13/1654—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems
    • G08B13/169—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems using cable transducer means
    • 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)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Burglar Alarm Systems (AREA)
SE8007903A 1979-11-13 1980-11-11 Intrangsdetektoranleggning SE8007903L (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US9365379A 1979-11-13 1979-11-13

Publications (1)

Publication Number Publication Date
SE8007903L true SE8007903L (sv) 1981-05-14

Family

ID=22240062

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8007903A SE8007903L (sv) 1979-11-13 1980-11-11 Intrangsdetektoranleggning

Country Status (5)

Country Link
BE (1) BE886110A (sv)
DE (1) DE3042358A1 (sv)
FR (1) FR2469721A1 (sv)
GB (1) GB2063537A (sv)
SE (1) SE8007903L (sv)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3685859T2 (de) * 1985-04-17 1992-12-17 Geoquip Security Systems Ltd Vibrationsempfindlicher transduktor.
GB2182182B (en) * 1985-04-24 1989-06-28 Sound Special Services Limited Intrusion detecting device

Also Published As

Publication number Publication date
GB2063537A (en) 1981-06-03
FR2469721A1 (fr) 1981-05-22
DE3042358A1 (de) 1981-05-14
BE886110A (fr) 1981-03-02

Similar Documents

Publication Publication Date Title
MX150123A (es) Mejoras en un codificador para producir senales electricas de salida en respuesta de una condicion sujeta a comprobacion
FR2329031A1 (fr) Systeme de detection d'intrusion
SE7811498L (sv) Anordning for avkenning och behandling av elektriska signaler
SE424138B (sv) Hjertsignalsdetektor
IT1203179B (it) Sistema elaboratore dei segnali
BR7801210A (pt) Gerador de sinais de direcao e de interrupcao
NL174191C (nl) Inbraakdetectiestelsel.
DE3878822D1 (de) Signalerkennungseinrichtung mit hoher impedanz.
JPS533380A (en) Electrical output signal peak detection device
SE7707012L (sv) Opto-elektriskt stralningsavsoknings- och detekteringssystem
FR2512962B1 (fr) Circuit de detection de l'existence d'un signal d'information
NL8007081A (nl) Signaaldetectieschakeling.
BE873841A (fr) Assemblage de capteur magnetique
AT386085B (de) Drehstellungs-erfassungssignal-generator
NO143246C (no) Signalgiveranlegg.
IT7925368A0 (it) Rivelatore per accertare la presenza di un segnale elettrico con prestabilite proprieta'.
SE8100184L (sv) Inbrottslarm
SE8007903L (sv) Intrangsdetektoranleggning
ATE72906T1 (de) Sicherungszaun mit ueber sensoren an pfosten befestigten sicherungsdraehten.
SE8700442D0 (sv) Detektering med hjelp av elektriska felt av forendring i rumslig konfiguration
SE7809876L (sv) Signaldetekteringsanordning
SE7809877L (sv) Signaldetekteringsanordning
BR7902641A (pt) Transdutor de pressao tendo sensores piezoresistivos blindados eletricamente
FR2599515B1 (fr) Capteur de conductivite detectant a distance
DE3852718T2 (de) Signalerkennungsschaltung.

Legal Events

Date Code Title Description
NAV Patent application has lapsed

Ref document number: 8007903-1

Format of ref document f/p: F