EP0178268A1 - Combined influence magnetic passive-microwave active triggering device for the activation of anti-tank mines and the like - Google Patents

Combined influence magnetic passive-microwave active triggering device for the activation of anti-tank mines and the like Download PDF

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Publication number
EP0178268A1
EP0178268A1 EP85830249A EP85830249A EP0178268A1 EP 0178268 A1 EP0178268 A1 EP 0178268A1 EP 85830249 A EP85830249 A EP 85830249A EP 85830249 A EP85830249 A EP 85830249A EP 0178268 A1 EP0178268 A1 EP 0178268A1
Authority
EP
European Patent Office
Prior art keywords
signal
microwave
target
circuit
transducer
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Withdrawn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
EP85830249A
Other languages
German (de)
English (en)
French (fr)
Inventor
Bruno Latini
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.)
Centro Progettazioni Elettroniche Di Ing Bruno Latini & C Sas
Snia Bpd SpA
Original Assignee
Centro Progettazioni Elettroniche Di Ing Bruno Latini & C Sas
Snia Bpd SpA
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 Centro Progettazioni Elettroniche Di Ing Bruno Latini & C Sas, Snia Bpd SpA filed Critical Centro Progettazioni Elettroniche Di Ing Bruno Latini & C Sas
Publication of EP0178268A1 publication Critical patent/EP0178268A1/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C13/00—Proximity fuzes; Fuzes for remote detonation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C13/00—Proximity fuzes; Fuzes for remote detonation
    • F42C13/04—Proximity fuzes; Fuzes for remote detonation operated by radio waves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C13/00—Proximity fuzes; Fuzes for remote detonation
    • F42C13/08—Proximity fuzes; Fuzes for remote detonation operated by variations in magnetic field

Definitions

  • the present invention concerns an electronic sensing device or triggering mechanism for the activation of anti-tank land mines and the like, capable of discriminat ing the effective presence of a target consisting of a heavy, tracked or wheeled, vehicle within a well determin ed zone of impairment centered on the vertical of the device, or otherwise centered on the longitudinal axis of the device, as well as of discriminating, within limits which will be indicated later, the various possible types of target and of determining consequently the activation against the type or class of target which it is desired to intercept.
  • Influence type triggering devices for land mines capable of sensing the proximity of a target of the armored tank type or similar are known, and they are capable, to a cer tain extent, of causing the activation of the mine within a maximum distance relative to the ensured impairment radius of the mine.
  • an active microwave type (receiving/transmitting) sensor having a directivity lobe of the same shape as the impairment cone of the mine, capable of discriminating the effective presence of a target within the cone of impairment and consequently of sending an activation signal to the firing circuits.
  • said device may operate only if the transmission lobe of the microwave transmitter-receiver is directly interested by the outline of the tank, and thus, only in the presence of an effective target, it is possible to have the operation (the detonation of the mine).
  • the device resumes automatically the original status.
  • M the anti-tank mine with its axis of directional detonation coiciding with the axis of B, with S the alerting magnetic sensor, with R the relative radius of alertment; with T the microwave transceiver and with B the zone irradiated by the directional transmission beam having a width of 2d.
  • the sensor S through the associated electronics, provides an activation signal to the supply circuits of the microwave transducer T, causing its operation.
  • the target proceeding in its way, directly enters the area B, it causes a reflection of electromagnetic power which is received by the receiving section of T and thence, properly treated, gives rise to the detonation of the mine.
  • a suitable reset circuit provides to reset the initial condition after the fall below a threshold value of the signal of magnetic alert.
  • the magnetic transducer 1 is made of a toroidal coil designed such as to be responsive to the variations of magnetic field produced by the movement of a target, having ferromagnetic characteristics, within a radius R the value of which is dependant upon the selection of an internal threshold, chosen as to be congruent with the kinematic and dimensional characteristics of the typical target.
  • the signal, so detected, is conveniently amplified by amplifier 4, the output of which is brought to the input of the alerting threshold circuit 7.
  • the magnetic actuation signal taken from amplifier 4 and processed by the processing circuit 9 reaches the same circuit 11.
  • Such a circuit provides to filter suitably the magnetic signal and to evaluate its zero crossing, making available at the output an activation signal for combination, after a suitably chosen number of zero crossings, such as to cause the detonation of the mine in correspondence of a well defined point of the target.
  • the output signal from circuit 9 is sent to the combination circuit 11 and, if at the input of said circuit a signal coming from the active section is already present, with characteristics congruent with those of the signal generated by a real target, an activation signal from the output of 11 is sent to the final circuit 12, which gives rise to the detonation of the mine.
  • the device can function only with the physical presence of a target of suitable dimensional and reflecting characteristics and that the accidental activation by occasional magnetic disturbances or by irradiation from microwave sources in the same frequency band cannot take place.
  • transmitter 3 through the supply 6 and to the electronics 5 of the microwave receiver 2 which therefore begin their active phase.
  • the transmitter 3 emits an e.m. power at very high frequency, such as to determine the required directivity of transmission.
  • a portion of such a radiation directly hits the receiver 2 in such a way that a Doppler beat takes place in the receiver upon the reception of the echo signal reflected by the target.
  • the echo power received by the recei ver 2 is sufficient to provide a Doppler signal of sufficient amplitude for successive processing.
  • the Doppler signal, detected by sensor 2, filtered for the removal of the high frequency carrier, is sent to the reception amplifier 5 where it is conveniently anplified and filtered in such a band which accounts for the kinematic characteristics of the target, thence it is sent to the processing circuits 8 which provide a properly calibrated integration and comparison with a threshold resulting by the reflectivi ty characteristics of the target.
  • an activation signal outputs from the processing circuit 8, which signal is sent to the combination and retention circuit 11.
  • Such a circuit provides for the retention of the activation signal coming from circuit 8 for a minimum period of time corresponding to the time of passage of a typical target at its minimum speed, and for evaluating a minimum permanence time of the signal before allowing

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Radar Systems Or Details Thereof (AREA)
EP85830249A 1984-10-03 1985-10-02 Combined influence magnetic passive-microwave active triggering device for the activation of anti-tank mines and the like Withdrawn EP0178268A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2297584 1984-10-03
IT22975/84A IT1178555B (it) 1984-10-03 1984-10-03 Dispositivo di scatto ad influenza combinata magnetica passiva - microonde attiva, per l'attivazione di mine anticarro o simili

Publications (1)

Publication Number Publication Date
EP0178268A1 true EP0178268A1 (en) 1986-04-16

Family

ID=11202491

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85830249A Withdrawn EP0178268A1 (en) 1984-10-03 1985-10-02 Combined influence magnetic passive-microwave active triggering device for the activation of anti-tank mines and the like

Country Status (2)

Country Link
EP (1) EP0178268A1 (it)
IT (1) IT1178555B (it)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0174500U (it) * 1987-10-27 1989-05-19
DE3723879A1 (de) * 1987-07-18 1992-04-02 Dynamit Nobel Ag Auf raeummassnahmen und natuerliche ereignisse unempfindlich reagierende mine
EP0942257A1 (fr) * 1998-03-13 1999-09-15 Giat Industries Mine, notamment antichar ou antivehicule, comportant des moyens de confirmation de la presence d'une cible

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2199863A5 (it) * 1970-06-25 1974-04-12 France Etat
FR2342626A7 (fr) * 1976-02-28 1977-09-23 Diehl Montage d'amorcage pour munition a disseminer
DE2318869A1 (de) * 1973-04-14 1977-10-27 Philips Patentverwaltung Sensorsystem fuer flussminen
DE3200918A1 (de) * 1982-01-14 1983-07-21 Bundesrepublik Deutschland, vertreten durch den Bundesminister der Verteidigung, dieser vertreten durch den Präsidenten des Bundesamtes für Wehrtechnik und Beschaffung, 5400 Koblenz Zuendeinrichtung fuer minen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2199863A5 (it) * 1970-06-25 1974-04-12 France Etat
DE2318869A1 (de) * 1973-04-14 1977-10-27 Philips Patentverwaltung Sensorsystem fuer flussminen
FR2342626A7 (fr) * 1976-02-28 1977-09-23 Diehl Montage d'amorcage pour munition a disseminer
DE3200918A1 (de) * 1982-01-14 1983-07-21 Bundesrepublik Deutschland, vertreten durch den Bundesminister der Verteidigung, dieser vertreten durch den Präsidenten des Bundesamtes für Wehrtechnik und Beschaffung, 5400 Koblenz Zuendeinrichtung fuer minen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3723879A1 (de) * 1987-07-18 1992-04-02 Dynamit Nobel Ag Auf raeummassnahmen und natuerliche ereignisse unempfindlich reagierende mine
JPH0174500U (it) * 1987-10-27 1989-05-19
EP0942257A1 (fr) * 1998-03-13 1999-09-15 Giat Industries Mine, notamment antichar ou antivehicule, comportant des moyens de confirmation de la presence d'une cible
FR2776060A1 (fr) * 1998-03-13 1999-09-17 Giat Ind Sa Mine, notamment antichar ou antivehicule, comportant des moyens de confirmation de la presence d'une cible

Also Published As

Publication number Publication date
IT8422975A0 (it) 1984-10-03
IT1178555B (it) 1987-09-09
IT8422975A1 (it) 1986-04-03

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