EP0454543B1 - Elektrischer Weidezaun mit variabler Energie - Google Patents

Elektrischer Weidezaun mit variabler Energie Download PDF

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Publication number
EP0454543B1
EP0454543B1 EP91401013A EP91401013A EP0454543B1 EP 0454543 B1 EP0454543 B1 EP 0454543B1 EP 91401013 A EP91401013 A EP 91401013A EP 91401013 A EP91401013 A EP 91401013A EP 0454543 B1 EP0454543 B1 EP 0454543B1
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EP
European Patent Office
Prior art keywords
capacitor
pulses
discharge
discharges
energy
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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.)
Expired - Lifetime
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EP91401013A
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English (en)
French (fr)
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EP0454543A1 (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.)
RHOMER, BRIGITTE
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RHOMER Brigitte
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    • 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
    • H05C1/00—Circuits or apparatus for generating electric shock effects
    • H05C1/04—Circuits or apparatus for generating electric shock effects providing pulse voltages

Definitions

  • This invention relates generally to electric fences intended to prevent the passage of animals and more particularly to the energizers used to send electrical pulses between output terminals connected to the fence.
  • Electric fences are well known consisting of one or more conductive wires, fixed to posts in general by means of insulators. These fences prevent cattle from leaving an enclosure, or animals from entering a plot.
  • Document WO 88/10059 describes a method for generating pulses in an energizer by which pulses are regularly sent at time intervals of the order of one second.
  • a charge control device is used to detect the charge present on the secondary of the energizer, that is to say in the fence wire. This device generates the sending of a much larger impulse than the pulses regularly sent as soon as the load exceeds a value determined as representing the fact that an animal touches the fence. Such a larger pulse is sent as long as the load on the secondary exceeds the threshold value.
  • the present invention aims to provide an electric fence which is very efficient while consuming little energy from the primary source (battery or accumulator battery).
  • This fence must in particular not waste this energy when the electric fence is poorly insulated due to the vegetation which touches, more or less randomly (sparks), the wire or wires.
  • the present invention takes advantage of this observation to propose a method for generating pulses for an electric fence energizer preventing the passage of animals, of the type delivering high voltage pulses at regular intervals, characterized in that the electrical pulses are distributed according to a cycle comprising a predetermined number n of relatively low energy pulses followed by a much stronger energy pulse than that of the preceding pulses.
  • Such a method makes it possible to send regular pulses of fairly low energy, spaced from the usual intervals of for example between 1 to 2 seconds, as well as a much stronger pulse every n pulses, n being a predetermined number which can for example take the value 7 or 10.
  • the solution according to the invention proves to be much more effective: the animal approaches more and more close to the fence wire during the 7 pulses at reduced energy, while remaining attentive due to the discharges, even weak, that it continues to receive, discharges which can be bearable because of their weak intensity, in particular when the wire is badly enough insulated, then at the time of the eighth impulse which is much stronger, the animal is subjected to a much more intense pain which causes its sudden recoil and inspires a salutary fear of the thread.
  • a second capacitor C2 In the cases where a second capacitor C2 is used, its discharge can be done through the same output transformer as that used for the discharge of the first capacitor C1 or it can be done through a second transformer, the secondaries of the two transformers being connected in parallel.
  • the strong impulse, consuming energy occurs only when an animal touches one of the fence wires, or when these are poorly insulated, which makes it even less frequent.
  • an energizer device for electric fencing comprises a transformer Ta having a primary Na1 crossed by current pulses controlled by the transistor TR1, itself controlled by a circuit A1 which attacks the base of TR1 and causes conduction then blocking of transistor TR1 at a high frequency.
  • the secondary Na2 of the transformer Ta collects the overvoltages occurring at each interruption of the primary current; it allows the capacitor C1 to be charged through the diode D1.
  • the capacitor C1 discharges every 1 or 2 seconds through the primary Nb1 of the transformer Tb, at the moment when a thyristor Th1 is started by a pulse on its trigger delivered by a K1 timer.
  • the high voltage pulse is collected at the terminals of the secondary Nb2 of the transformer Tb, to be sent between the ground (earth or ground wire) and the fence wire, by connection to the terminals L1 and L2.
  • the device comprises complementary elements which will now be described.
  • C2 can be discharged at the same time as C1, through a thyristor Th2.
  • This simultaneous discharge of the two capacitors C1 and C2 in the primary Nb1 of the output transformer Tb causes a pulse N o times stronger than the simple discharge of C1, with N o equal to the ratio (C1 + C2) / C1.
  • Th2 The initiation of Th2 is caused, by an electronic circuit K2, only after a certain number of triggerings of Th1 has occurred.
  • K2 can for example comprise a binary counter connected to K1 which does not cause the formation of a trigger pulse in K2 until the eighth pulse of K1.
  • A2 is then a pulse generator for controlling transistor TR1, which is designed to block under the effect of a negative slope pulse, and to restart, by means of a circuit not shown in FIG. 3, after the discharge pulse of the capacitor C1.
  • a voltage regulator composed of the elements D3, R1, R2, R3 and Z1 delivers a negative pulse when it appears, between the terminals of Na2 a pulse exceeding a certain voltage (for example 200 volts).
  • N1 is a switching electronic circuit which remains closed for the duration corresponding to 7 C1 discharge pulses, but which is kept open between the eighth and ninth C1 discharge pulses.
  • the circuit as shown in FIG. 3 makes it possible to recharge the capacitor C1 only at a predetermined voltage (for example 200 volts) for the duration corresponding to the first 7 pulses, the charge of C1 stopping when the voltage reaches 200 volts, since a negative pulse then blocks the control pulses of A2; on the other hand during the time interval which separates the seventh and the eighth pulse, the capacitor C1 is no longer limited in its charge, since N1 is a switch in the open position, and the voltage of C1 can, for example and depending on the performance of the charging circuit, rise to a value of 500 or 600 volts. This makes it possible to deliver on the fence spaced pulses much more powerful than the most frequent pulses.
  • a predetermined voltage for example 200 volts
  • D1 and D2 represent diodes, or symbolize bridges of diodes whose connection principle is well known.
  • FIG 4 there is shown a new embodiment of the device according to the invention having an additional characteristic that the delivery of the strong but infrequent pulse only takes place when the load corresponding to the impedance connected to outputs L1 and L2 is important (Low impedance).
  • the differences consist in the link in series with the thyristor Th1 of a low impedance Rp, and the replacement of the circuit K2 by a circuit Dp, Rq, Cp, Rs, Di, P.
  • P is an electronic circuit which acts as a switch and only closes after a certain number of C1 discharge pulses, to allow the possible initiation of Th2 and therefore the discharge of C2.
  • Rp is a low impedance, which hardly disturbs the operation of the generator during the discharge of C1. It collects a voltage integrated across the terminals of Cp. This voltage is all the greater as the current passing through Nb1 is high, and therefore as the impedance connected to the secondary Nb2 is low.
  • D i is a circuit which delivers a pulse synchronized with that of K1 only when the voltage across Cp exceeds a certain value.

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  • Life Sciences & Earth Sciences (AREA)
  • Insects & Arthropods (AREA)
  • Catching Or Destruction (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Revetment (AREA)
  • Electrotherapy Devices (AREA)
  • Housing For Livestock And Birds (AREA)

Claims (8)

  1. Verfahren zur Erzeugung von Pulsen für ein Gerät zum Elektrifizieren elektrischer Zäune, die den Durchgang von Tieren verhindern sollen, bei dem in regelmäßigen Intervallen Hochspannungspulse abgegeben werden, dadurch gekennzeichnet, daß die elektrischen Pulse entsprechend einem Zyklus verteilt sind, der eine bestimmte, im voraus festgelegte Anzahl n von Pulsen relativ schwacher Energie umfaßt, denen ein Puls mit erheblich größerer Energie als die der Pulse, die ihm vorhergehen, folgt.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der n-te stärkere Puls nur dann erzeugt wird, wenn die Impedanz der Leitung des Zaunes, der an das Gerät zur Eletrifizierung angeschlossen ist, unter einen vorher festgelegten Wert abfällt.
  3. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, daß die Pulse schwacher Energie durch die Entladung eines ersten Kondensators (C₁) und die Pulse großer Energie durch die Entladung eines zweiten Kondensators (C₂) erhalten werden, der gleichzeitig mit dem ersten Kondensator (C₁) nach besagter, vorher festgelegter Anzahl n von Entladungen des letzteren entladen wird.
  4. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, daß die Pulse schwacher Energie durch die Entladung eines ersten Kondensators (C₁) und die Pulse großer Energie durch die Entladung eines zweiten Kondensators (C₂) erhalten werden, der mehr Energie als der erste Kondensator (C₁) enthält und der nach einer bestimmten, vorher festgelegten Anzahl n von Entladungen des ersten Kondensators (C₁) alternativ zu diesem entladen wird.
  5. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, daß die Pulse schwacher Energie durch Entladung eines Kondensators (C₁) und die Pulse großer Energie ebenfalls durch Entladung dieses Kondensators (C₁) erhalten werden, wobei dieser nach der vorher festgelegten Anzahl n von Entladungen schwacher Energie während des Zeitintervalls, das dem Puls hoher Energie vorausgeht, bei einer höheren Spannung aufgeladen wird.
  6. Vorrichtung nach einem der Ansprüche 3 oder 4, dadurch gekennzeichnet, daß der zweite Kondensator (C₂) sich über den gleichen Ausgangstransformator wie der erste Kondensator (C₁) entlädt.
  7. Vorrichtung nach einem der Ansprüche 3 oder 4, dadurch gekennzeichnet, daß der zweite Kondensator (C₂) sich über einen zweiten Transformator entlädt, der von dem Transformator, über den sich der erste Kondensator (C₁) entlädt, verschieden ist, dessen Sekundärwicklungen jedoch an den gleichen Hochspannungsausgängen angeschlossen sind, welche die Verbindung mit den Leitern der stromführenden Leitung erlauben.
  8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß die Hochspannungsausgänge der Transformatoren, über die sich der erste und der zweite Kondensator (C₁, C₂) entladen, durch Dioden oder Diodenbrücken miteinander verbunden sind, welche die Parallelschaltungen der Sekundärwicklungen der Transformatoren vermeiden.
EP91401013A 1990-04-25 1991-04-17 Elektrischer Weidezaun mit variabler Energie Expired - Lifetime EP0454543B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9005247A FR2661589B1 (fr) 1990-04-25 1990-04-25 Cloture electrique a energie variable.
FR9005247 1990-04-25

Publications (2)

Publication Number Publication Date
EP0454543A1 EP0454543A1 (de) 1991-10-30
EP0454543B1 true EP0454543B1 (de) 1994-09-28

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EP91401013A Expired - Lifetime EP0454543B1 (de) 1990-04-25 1991-04-17 Elektrischer Weidezaun mit variabler Energie

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EP (1) EP0454543B1 (de)
AT (1) ATE112439T1 (de)
DE (1) DE69104259T2 (de)
FR (1) FR2661589B1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4140628C2 (de) * 1991-12-10 1996-08-22 Ako Ismet Elektrogeraete Gmbh Weidezaungerät
NZ272112A (en) * 1995-05-12 1997-10-24 Stafix Electric Fencing Ltd Electric fence pulse generator: pulse height maintained while duration varied according to fence load
FR2781911B1 (fr) * 1998-07-30 2000-10-20 Lacme Electrificateur de cloture protege par antivol electronique
FR2787964B1 (fr) * 1998-12-23 2001-03-23 Lacme Electrificateur de cloture, a transformateur en faible masse
DE10210144B4 (de) * 2002-03-07 2004-07-01 Electra Gmbh Vorrichtung zur Einspeisung von elektrischen Impulsen in eine elektrische Schutzvorrichtung
DE10332267B4 (de) * 2003-07-10 2005-11-17 Horizont Gerätewerk GmbH Verfahren zum Betreiben eines Elektrozaungerätes und Elektrozaungerät
DE102007024026B4 (de) * 2007-04-02 2017-11-16 Ako-Agrartechnik Gmbh & Co. Kg Weidezaungerät und Verfahren zum Betreiben eines Weidezaungerätes

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1514726B1 (de) * 1965-06-24 1973-02-01 Schecker Geb Block Schaltung zur Erzeugung von Schreckspannungsimpulsen zur Dressur von Tieren
DE2149834A1 (de) * 1971-10-06 1973-04-12 Hans Grossheim Elektrofischgeraet
SE457497B (sv) * 1987-06-05 1988-12-27 Internationell Affaersutveckli Saett att mata ett elstaengsel samt impulsgivare foer saettets genomfoerande

Also Published As

Publication number Publication date
FR2661589B1 (fr) 1993-12-17
EP0454543A1 (de) 1991-10-30
ATE112439T1 (de) 1994-10-15
DE69104259T2 (de) 1995-05-24
FR2661589A1 (fr) 1991-10-31
DE69104259D1 (de) 1994-11-03

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