EP0454542A1 - Kontrollvorrichtung, die zur Messung der Wirksamkeit eines elektrischen Zaunes dient - Google Patents

Kontrollvorrichtung, die zur Messung der Wirksamkeit eines elektrischen Zaunes dient Download PDF

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Publication number
EP0454542A1
EP0454542A1 EP91401012A EP91401012A EP0454542A1 EP 0454542 A1 EP0454542 A1 EP 0454542A1 EP 91401012 A EP91401012 A EP 91401012A EP 91401012 A EP91401012 A EP 91401012A EP 0454542 A1 EP0454542 A1 EP 0454542A1
Authority
EP
European Patent Office
Prior art keywords
voltage
values
capacitor
current
resistances
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.)
Granted
Application number
EP91401012A
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English (en)
French (fr)
Other versions
EP0454542B1 (de
Inventor
Jean Jacques Hamm
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.)
HAMM, VALERY
Original Assignee
Hamm Valery
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 Hamm Valery filed Critical Hamm Valery
Publication of EP0454542A1 publication Critical patent/EP0454542A1/de
Application granted granted Critical
Publication of EP0454542B1 publication Critical patent/EP0454542B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05C—ELECTRIC CIRCUITS OR APPARATUS SPECIALLY DESIGNED FOR USE IN EQUIPMENT FOR KILLING, STUNNING, OR GUIDING LIVING BEINGS
    • H05C3/00—Other circuits or apparatus

Definitions

  • the present invention relates generally to electric fences used to close fields where animals graze so that they can be left unattended.
  • the invention relates more particularly to a device for controlling the proper functioning of these fences.
  • controllers make it possible to detect or measure the peak voltage existing between the terminals of an energizer, between two conducting wires, or between a conducting wire and the ground. Other types of controllers make it possible to measure a more or less integrated value over time of the pulse voltage.
  • the magnitude representative of the pain felt by an animal or a man touching the conductors is mainly a function of the electrical energy which is dissipated in the body during the pulse.
  • the measurement of the peak voltage of the pulse is therefore not very representative of the efficiency of the energizer, or of the electric fence line at the place where the measurement is made.
  • the invention aims to propose a device whose "quadrature of V (t)" and “integration over time” parts are composed of passive elements (resistors, diodes, zener diodes, capacitors ... ) stable over time and in temperature, energy efficient, and with an extremely short response time.
  • the invention relates to a control device used to measure the efficiency of an electric fence, characterized in that it measures the energy of each pulse appearing at the output of the energizer or between two conductors of the closure, by integrating over time a current generated from the voltage applied between the input terminals, current which is proportional to a function approximating the square of the input voltage.
  • the pulse energy is read by connecting the capacitor to a display device, digital or needle, which indicates the peak value of the voltage of the capacitor CI reached at the end of the integration process or processes.
  • a load R e is connected between the two input terminals of the controller.
  • This load can be chosen close to 1000 ohms, a value which fairly well represents the impedance of the body and the contacts for an animal touching the wire.
  • R 2 and R 3 form a divider bridge, R 2 having sufficient values not to modify the load R e appreciably. In the case where R 3 has a value much smaller than R e , we can delete R 2 and link R 3 in series with R c .
  • R 2 and R 3 form a divider bridge in order to work under voltages, at the terminals of R 3 , much lower than the input voltage V (t) which can reach 10,000 volts.
  • a diode bridge D 1 , D 2 , D 3 , D 4 allows the oscillations of the input signal to be rectified.
  • an electrical system composed of the 4 blocks Q i , Q 2 , Q 3 , Q 4 . These 4 blocks allow signal analysis, display, and system reset.
  • Q 1 is a device which transforms the signal V (t) into an electric current I (t) proportional to the square of V (t).
  • Q 2 integrates the signal I (t) over time, and stores the information in the form of a charging voltage V 2 of a capacitor CI which is proportional to:
  • Q 3 is a device which indicates, for example on a digital display, the voltage V 2 reached at the terminals of C 1 after the end of each electrical pulse.
  • Q 4 is a device which makes it possible to completely discharge C 1 after the reading of its peak voltage has been made.
  • Q 4 can be designed, using the well-known means of electronics, to discharge the capacitor C 1 automatically a certain time after each pulse when the reading of V 2 has been made.
  • Q 4 can also be designed to automatically discharge CI only after a predetermined number of pulses so that the signal can be accumulated over several pulses.
  • Q 4 can be a manual device of the "push button" type on which the user presses in order to discharge C 1 , after a sufficient number of pulses to ensure a reliable reading of the display, in the case where the residual energy at the measurement location is small.
  • Z 1 , Z 2 ... Z n are clipping elements such as zener diodes or resistors variable with voltage.
  • the elements Z n are arranged in ascending order of the values V n of their threshold voltages, from left to right.
  • the first value V o of the element Z o is taken, in this example equal to zero, Z o , which is in fact a short circuit, is not shown.
  • the device as shown in FIG. 2 makes it possible, when choosing the values V k of the voltage thresholds of the zener diodes, and the associated resistances R k , to obtain a current I (t) which is an increasing function G (V) represented in FIG. 3, composed of segments of lines each of which is a secant ("chord") of a curve F (V) at the points sought.
  • FIG. 5 represents a well known integrator circuit, composed of a load resistor R 1 and a capacitor C 1 .
  • This circuit makes it possible to obtain the integration of the current I (t) with a very good approximation insofar as the time constant R 1 C 1 is much less than the duration of each pulse.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Insects & Arthropods (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Indicating And Signalling Devices For Elevators (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Housing For Livestock And Birds (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Alarm Systems (AREA)
EP91401012A 1990-04-25 1991-04-17 Kontrollvorrichtung, die zur Messung der Wirksamkeit eines elektrischen Zaunes dient Expired - Lifetime EP0454542B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9005245A FR2661505B1 (fr) 1990-04-25 1990-04-25 Dispositif de controle servant a mesurer l'efficacite d'une cloture electrique.
FR9005245 1990-04-25

Publications (2)

Publication Number Publication Date
EP0454542A1 true EP0454542A1 (de) 1991-10-30
EP0454542B1 EP0454542B1 (de) 1995-03-15

Family

ID=9396055

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91401012A Expired - Lifetime EP0454542B1 (de) 1990-04-25 1991-04-17 Kontrollvorrichtung, die zur Messung der Wirksamkeit eines elektrischen Zaunes dient

Country Status (4)

Country Link
EP (1) EP0454542B1 (de)
AT (1) ATE120068T1 (de)
DE (1) DE69108089T2 (de)
FR (1) FR2661505B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4115630A1 (de) * 1991-05-14 1992-11-19 Ako Werke Gmbh & Co Schaltungsanordnung zur ueberwachung eines weidezaunes

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2817443B1 (fr) * 2000-11-30 2003-02-21 Lacme Dispositif de controle de l'efficacite d'une cloture electrique
DE202009015870U1 (de) * 2009-11-20 2011-04-07 Patura Kg Vorrichtung zur Ermittlung eines Zustands einer Elektrozaunanlage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3873847A (en) * 1974-02-19 1975-03-25 John H Finch Control system for an electrified fence
WO1982000936A1 (en) * 1980-08-29 1982-03-18 Begg G Alarm system for electric fences
US4725825A (en) * 1986-03-17 1988-02-16 Amco Partnership Electric fence voltage indicator light

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3873847A (en) * 1974-02-19 1975-03-25 John H Finch Control system for an electrified fence
WO1982000936A1 (en) * 1980-08-29 1982-03-18 Begg G Alarm system for electric fences
US4725825A (en) * 1986-03-17 1988-02-16 Amco Partnership Electric fence voltage indicator light

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ETZ - ELEKTROTECHNISCHE ZEITSCHRIFT vol. 109, no. 18, septembre 1988, pages 840-843, Berlin, DE; W. WEINREICH: "Berechnung und Bewertung von Elektrozaunimpulsen" *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4115630A1 (de) * 1991-05-14 1992-11-19 Ako Werke Gmbh & Co Schaltungsanordnung zur ueberwachung eines weidezaunes

Also Published As

Publication number Publication date
ATE120068T1 (de) 1995-04-15
DE69108089D1 (de) 1995-04-20
DE69108089T2 (de) 1995-10-12
FR2661505A1 (fr) 1991-10-31
FR2661505B1 (fr) 1993-06-18
EP0454542B1 (de) 1995-03-15

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