ATE29932T1 - MEASURING ARRANGEMENT FOR DETERMINING THE OWN CAPACITY OR ITS CHANGE ON A CAPACITIVE PROTECTIVE FENCE. - Google Patents

MEASURING ARRANGEMENT FOR DETERMINING THE OWN CAPACITY OR ITS CHANGE ON A CAPACITIVE PROTECTIVE FENCE.

Info

Publication number
ATE29932T1
ATE29932T1 AT84106528T AT84106528T ATE29932T1 AT E29932 T1 ATE29932 T1 AT E29932T1 AT 84106528 T AT84106528 T AT 84106528T AT 84106528 T AT84106528 T AT 84106528T AT E29932 T1 ATE29932 T1 AT E29932T1
Authority
AT
Austria
Prior art keywords
rln
central control
electrode wires
determining
measuring arrangement
Prior art date
Application number
AT84106528T
Other languages
German (de)
Inventor
Uwe Metzner
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Application granted granted Critical
Publication of ATE29932T1 publication Critical patent/ATE29932T1/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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)
  • Measurement Of Resistance Or Impedance (AREA)
  • Testing Or Measuring Of Semiconductors Or The Like (AREA)
  • Fencing (AREA)

Abstract

1. A measuring arrangement at a capacitive protective fence for determining the self-capacitive component or variation therein, as the case may be, provided with long connection lines formed by coaxial cables between a central control and the electrode wires, characterised in that an outward line (HL) is provided by means of which the respective electrode wires (E1 to En) are supplied, via the primary winding (PW1 to PWn) of a respective transformer (Ü1 to Ün), with transmitting energy of a transmitte, (SEN) arranged in the central control (Z), and that a number of return lines (RL1 to RLn) corresponding to the number (n) of electrode wires (E1 to En) are provided, which connect the respective secondary windings (SW1 to SWn) of the transformers (Ü1 to Ün) to respective oscillatory circuits (SK1 to SKn) in the central control (Z) on which the voltage (U1 to Un) proportional to the respective self-capacitive component (CE1 to CEn) is measured, where the screen of the outward and return lines (HL and RL1 to RLn) is connected 10 earth potential, and a capacitor (C) in the respective oscillatory circuit (SK) has a capacitance substantially greater than the cable capacitance (CKR) of the respective return lines (RL1 to RLn).
AT84106528T 1983-06-14 1984-06-07 MEASURING ARRANGEMENT FOR DETERMINING THE OWN CAPACITY OR ITS CHANGE ON A CAPACITIVE PROTECTIVE FENCE. ATE29932T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3321471A DE3321471A1 (en) 1983-06-14 1983-06-14 MEASURING ARRANGEMENT FOR DETERMINING OWN CAPACITY OR CHANGING IT TO A CAPACITIVE FENCE
EP84106528A EP0131738B1 (en) 1983-06-14 1984-06-07 Measuring device for detecting the self-capacitance or the variability of the same at a capacitive protective fence

Publications (1)

Publication Number Publication Date
ATE29932T1 true ATE29932T1 (en) 1987-10-15

Family

ID=6201465

Family Applications (1)

Application Number Title Priority Date Filing Date
AT84106528T ATE29932T1 (en) 1983-06-14 1984-06-07 MEASURING ARRANGEMENT FOR DETERMINING THE OWN CAPACITY OR ITS CHANGE ON A CAPACITIVE PROTECTIVE FENCE.

Country Status (3)

Country Link
EP (1) EP0131738B1 (en)
AT (1) ATE29932T1 (en)
DE (2) DE3321471A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3769348D1 (en) * 1986-03-04 1991-05-23 Siemens Ag CAPACITIVE INTRUSION PROTECTION SYSTEM.
AU1044197A (en) * 1995-12-07 1997-06-27 Telefonaktiebolaget Lm Ericsson (Publ) Emergency call handling in a cellular telecommunications system
NZ531133A (en) * 2004-02-25 2005-11-25 Gallagher Group Ltd A portable tester and remote control apparatus for an electric fence

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1275417B (en) * 1966-09-29 1968-08-14 Siemens Ag Room protection device for open-air systems with capacitive electrodes arranged in the branches of a bridge circuit
DE1762448A1 (en) * 1968-06-19 1970-03-19 Wilhelm Riechmann Capacitive proximity switch
GB2015165B (en) * 1978-02-09 1983-01-12 Koa Oil Co Ltd Detecting capacitively corrosion of pipes
US4293852A (en) * 1978-12-08 1981-10-06 Lawrence Security Services Ltd. Capacitive article removal alarm

Also Published As

Publication number Publication date
DE3321471A1 (en) 1984-12-20
EP0131738A1 (en) 1985-01-23
DE3466445D1 (en) 1987-10-29
EP0131738B1 (en) 1987-09-23

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