EP0177899A1 - Elektrifizierungsvorrichtung für Weidezäune und Aktivierungsverfahren solcher Vorrichtung - Google Patents

Elektrifizierungsvorrichtung für Weidezäune und Aktivierungsverfahren solcher Vorrichtung Download PDF

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Publication number
EP0177899A1
EP0177899A1 EP85112519A EP85112519A EP0177899A1 EP 0177899 A1 EP0177899 A1 EP 0177899A1 EP 85112519 A EP85112519 A EP 85112519A EP 85112519 A EP85112519 A EP 85112519A EP 0177899 A1 EP0177899 A1 EP 0177899A1
Authority
EP
European Patent Office
Prior art keywords
fencing
animal
circuit
comparator
input
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.)
Withdrawn
Application number
EP85112519A
Other languages
English (en)
French (fr)
Inventor
Lodovico Chiesa
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.)
TECNALL Srl
Original Assignee
TECNALL Srl
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 TECNALL Srl filed Critical TECNALL Srl
Publication of EP0177899A1 publication Critical patent/EP0177899A1/de
Withdrawn legal-status Critical Current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
    • H05C1/00—Circuits or apparatus for generating electric shock effects
    • H05C1/04—Circuits or apparatus for generating electric shock effects providing pulse voltages
    • H05C1/06—Circuits or apparatus for generating electric shock effects providing pulse voltages operating only when touched

Definitions

  • This invention relates to an electrifying device for pasture fencing which is only activated if an animal comes into contact with a part of the said fencing and to the activation process of said device.
  • Known electronic-type electrifying devices provide a circuit conveniently fed from either batteries or a suitably transformed alternate mains supply, said circuit being connected to at least one conductor running along the fencing wire and to the ground reference.
  • the circuit is always activated, that is to say, pulses are always emitted through the conductor running along the fencing, always referring to the ground reference, even when no animal comes into contact with the fencing. This results in a useless consumption of the power supply and, if it is fed from a battery, the latter will run down, even if no animal comes into contact with the fencing.
  • FR-A-1.119.402 describes a control circuit to be applied to fencing for animals, which only emits pulses when an animal comes into contact with the fencing.
  • the component used by this circuit for activating the pulse timing is a relay.
  • high currents are needed to activate a relay. Said activating currents depend on the fence resistance (which depends on length) and the resistance of the animal and the soil (which depend on the degree of humidity). Therefore, the activation of the relay is correlated with factors which can not be predicted at the design stage.
  • a preset time interval is always needed to activate the relay after an animal has come into contact with the fencing. If the animal moves away inside this time interval, the power discharge is conveyed to the relay only, causing serious damage to the device.
  • FR-A-1.583.813 describes an electrified fence activated by the animal itself.
  • This circuit provides two separate batteries: one powers the generation of pulses, the other activates the control circuit.
  • the control circuit comprises an internal resistance at a preselected value which, when an animal comes into contact with the fencing, is in parallel with the resistance of the fence plus that of the animal, producing an actuating signal.
  • the actuating signal depends on the resistance value of the fence and those of the animal and the soil, which depend on the degree of humidity and other unpredictable factors.
  • the actuating signal is tied to the specific values of the resistances introduced from outside and depends on aleatory (chance) factors, which is unacceptable.
  • the output device from the element generating high-voltage discharges to the fencing (secondary of the oscillator) consists of a condenser, which will be damaged by said discharges.
  • the object of this invention is to provide an electrifying device which operates only when an animal comes into contact with at least one conductor, and which. functions independently of the specific values of the fencing and animal resistances, whatever the humidity conditions of the line and the soil.
  • a further object is to provide a circuit which permits reduced energy consumption and is activated only when necessary.
  • a further object is to provide a process which permits activation of said circuit to occur only under certain conditions.
  • the main object is achieved by making provision, in a circuit for electrifying devices of the type which generate high-voltage pulses along the conductors fitted to the fencing - the circuit comprising an oscillator and a time switch according to the prior art - for the arranging of a comparator device with one of the inputs connected to the fencing line, suitable for coming into contact with an animal, such that the comparator only emits an output signal when the input (-) drops to a level below that of the other input, as a result of an animal coming into contact with the fencing.
  • a separator device between the oscillator and at least one of the conductors running along the fencing, said device being suitable for separating the continuous negative component, coming from the line (fence), from the high-voltage pulses.
  • the output of said comparator device is connected to an actuator device, for example a relay, which provides for closing a circuit when the comparator is triggered.
  • the process by which the device is activated when an animal comes into contact with one of the conductors connected to the oscillator device, provides for continually comparing a prefixed value with an input value, said input being connected to one of the conductors running along the fencing, so as to intervene and provide for connecting the power supply to the time switch and oscillator only if the animal touches at least one of the conductors and the impedance of its body thereby produces an alteration in the comparator input (-), which drops to a level below the level of the other input, said intervention depending on the fact that a variation in impedance has occured, but remaining independent of the value of said impedance.
  • the electrifying device provides for sending a series of high-voltage pulses through one of the conductors running along the fencing, always referring to the ground reference, only when an animal touches at least a part of the conductor fitted to the fencing.
  • one pulse of a millisecond maximum duration is emitted per second at an intensity of about 8000 V.
  • the device according to this invention therefore, emits this pulse train of known characteristics, but has the exclusive feature of generating said pulse train only when really necessary.
  • the animal functions for this circuit as a circuit switch which provides for activating the emitting of pulses from the oscillator, switched for a suitable time.
  • the circuit for realizing the above-described functions is made up of four functional sections, besides the power supply, the logical interconnections of which are represented in figure 3. Inside each section, provision is made for the circuit components which carry on the necessary functions, as is better illustrated in figure 1.
  • Unit 11 is the comparator section.
  • the impedance of its body causes a variation in input, that if, it supplies a negative to the comparator device which switches into operation the actuator or relay RL.
  • the comparator input (-) is connected to an impedance of suitable value (R4) which determines the intervention threshold.
  • R4 depends, for example, on the length of the fencing, the degree of humidity, soil resistance and so on.
  • Unit 12 or time switch provides for determining the pulse frequency with the components illustrated in Fig. 1.
  • Unit 13 or oscillator provides for sending high-voltage pulses of preset duration and frequency to terminals C and D. It should be noted that units 12 and 13 are entirely known and found in electrifying devices according to the prior art. They can be made in any other way.
  • Unit 14 or separator device comprises a 90 V discharger, the function of which is to keep the continuous negative component, coming from terminal C and to be sent to the comparator, separated from the high-voltage pulses during activation of the circuit. These pulses, coming from the oscillator, are sent to at least one conductor CC, always referring to the ground reference.
  • the circuit is fed with 12 V at terminals A and B and provision is made for an appropriate switch INT for actuating the circuit.
  • an appropriate switch INT for actuating the circuit.
  • the power supply transformer circuit is illustrated in figure 2.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Insects & Arthropods (AREA)
  • Housing For Livestock And Birds (AREA)
  • Catching Or Destruction (AREA)
  • Electrotherapy Devices (AREA)
EP85112519A 1984-10-08 1985-10-03 Elektrifizierungsvorrichtung für Weidezäune und Aktivierungsverfahren solcher Vorrichtung Withdrawn EP0177899A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT23045/84A IT1176890B (it) 1984-10-08 1984-10-08 Apparecchio elettrificatore di recinti per il pascolo che risulta attivato solo se un animale risulta a contatto con detto recinto, relativo procedimento di attivazione di detto apparecchio
IT2304584 1984-10-08

Publications (1)

Publication Number Publication Date
EP0177899A1 true EP0177899A1 (de) 1986-04-16

Family

ID=11203215

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85112519A Withdrawn EP0177899A1 (de) 1984-10-08 1985-10-03 Elektrifizierungsvorrichtung für Weidezäune und Aktivierungsverfahren solcher Vorrichtung

Country Status (3)

Country Link
EP (1) EP0177899A1 (de)
ES (1) ES289455Y (de)
IT (1) IT1176890B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2604324A1 (fr) * 1986-09-22 1988-03-25 Egea Remy Cloture electrique sensitive
US6398191B1 (en) 1998-08-07 2002-06-04 Fogim Hb Device for an electrical fence

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB680665A (en) * 1950-04-27 1952-10-08 Helin Wright Mallett Improvements in or relating to devices for electrifying wire fences
FR1119402A (fr) * 1954-02-26 1956-06-20 Cooper Stewart Engineering Com Perfectionnements aux circuits de commande des clôtures de fil métallique électrifiées
FR1583813A (de) * 1968-04-09 1969-12-05
US3772529A (en) * 1972-05-08 1973-11-13 P Boeing Programmable unijunction fence charger
FR2373209A1 (fr) * 1976-12-02 1978-06-30 Cadiou Joseph Dispositif a declenchement d'un electrificateur de cloture

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB680665A (en) * 1950-04-27 1952-10-08 Helin Wright Mallett Improvements in or relating to devices for electrifying wire fences
FR1119402A (fr) * 1954-02-26 1956-06-20 Cooper Stewart Engineering Com Perfectionnements aux circuits de commande des clôtures de fil métallique électrifiées
FR1583813A (de) * 1968-04-09 1969-12-05
US3772529A (en) * 1972-05-08 1973-11-13 P Boeing Programmable unijunction fence charger
FR2373209A1 (fr) * 1976-12-02 1978-06-30 Cadiou Joseph Dispositif a declenchement d'un electrificateur de cloture

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2604324A1 (fr) * 1986-09-22 1988-03-25 Egea Remy Cloture electrique sensitive
US6398191B1 (en) 1998-08-07 2002-06-04 Fogim Hb Device for an electrical fence

Also Published As

Publication number Publication date
ES289455Y (es) 1986-12-01
IT8423045A1 (it) 1986-04-08
ES289455U (es) 1986-04-01
IT1176890B (it) 1987-08-18
IT8423045A0 (it) 1984-10-08

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Inventor name: CHIESA, LODOVICO