EP0880669B1 - Zündvorrichtung mit programmierbarer zündzeit - Google Patents

Zündvorrichtung mit programmierbarer zündzeit Download PDF

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Publication number
EP0880669B1
EP0880669B1 EP96943151A EP96943151A EP0880669B1 EP 0880669 B1 EP0880669 B1 EP 0880669B1 EP 96943151 A EP96943151 A EP 96943151A EP 96943151 A EP96943151 A EP 96943151A EP 0880669 B1 EP0880669 B1 EP 0880669B1
Authority
EP
European Patent Office
Prior art keywords
time
programming
micro
controller
constituted
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.)
Expired - Lifetime
Application number
EP96943151A
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English (en)
French (fr)
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EP0880669A1 (de
Inventor
Jean-Louis Boyer
André Joseph Nestor GILSON
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.)
JASON ENGINEERING SA
Direction General de lArmement DGA
Gouvernement de la Republique Francaise
Original Assignee
JASON ENGINEERING SA
Delegation Generale pour lArmement
Gouvernement de la Republique Francaise
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Publication date
Application filed by JASON ENGINEERING SA, Delegation Generale pour lArmement, Gouvernement de la Republique Francaise filed Critical JASON ENGINEERING SA
Publication of EP0880669A1 publication Critical patent/EP0880669A1/de
Application granted granted Critical
Publication of EP0880669B1 publication Critical patent/EP0880669B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F42C11/00—Electric fuzes
    • F42C11/06—Electric fuzes with time delay by electric circuitry
    • F42C11/065—Programmable electronic delay initiators in projectiles

Definitions

  • the present invention relates to the field of firing mechanisms electric and, more particularly, that of the initiating devices of a detonator for projectiles, missiles, mines and miniature bombs comprising a power supply and means for delaying the action of an element of igniting a primer.
  • priming devices comprising means for delay of the action of a firing element of the primer.
  • timing means are generally electronic, such as those used in patent EP0093804. Their failure can lead to action element premature on the primer and therefore the explosion of the device to which they are associated. It goes without saying that this explosion can have serious consequences on the or the users.
  • patent FR2670576 describes a device for neutralization or combat equipment comprising a box, a pyrotechnic chain deactivated by mechanical safety means, in this case a clock, and a timer which can be set by transmission means.
  • One of the aims of the invention is to overcome these drawbacks by proposing a safe electronic or electromechanical ignition device whose programming delay can be performed simultaneously on several devices priming in order to obtain a perfect synergy.
  • a device for initiating a detonator comprises a power supply providing a first intensity, to a circuit comprising means for delaying the action of a firing element of a primer and at means capable of generating, at the end of the delay time, a second intensity sufficient to activate said element, the first outcome of food, not being.
  • these means consist of a capacitor, switching means, and control means for these switching means enabling this capacitor to be charged for a time of charge (Tp2), then to unload it, this unloading causing the action of the element on the primer.
  • Tp2 time of charge
  • a device for initiating a detonator includes a electrical supply of the means for delaying the action of an element of ignition of a primer, and means capable of generating, at the expiration of the duration time delay, sufficient intensity to activate said element, the latter means comprising a capacitor, switching means, and means for controlling these switching means enabling this capacitor during a charging time and then discharging it, this discharging causing the element to act on the primer, the control means being constituted by a microcontroller.
  • the switching means which may be constituted, for example example, by transistors.
  • the time delay means include means for programming the duration of time delay, these means can be wholly or partly integrated into the device priming. These means can, for example, consist of coding wheels or in a microcomputer.
  • these means consist of external means comprising an electrical supply, a microcontroller, a display, two programming switches and transfer means formed by phototransistors.
  • a priming device comprises trapping means which may consist of a circuit comprising switching means and of which opening causes the primer to ignite.
  • the invention also relates to a method for securing a device for initiating a detonator of the type comprising a power supply electric and means for delaying the action of a firing element of the primer, characterized in that it consists, at the expiration of the delay time, to charge a condenser then to discharge it to cause the ignition.
  • Figure 1 shows a diagram of the main means constituting a device for igniting a detonator primer according to the invention.
  • These means are of the type comprising a housing inside which means are arranged power supply 10 of a circuit mainly comprising a resistor 12 for igniting the primer 13, means 20 for closing the circuit as well as means 30 for delaying firing after closing of the circuit.
  • the supply means 10 consist of two lithium batteries delivering a voltage of 6V.
  • the means 20 for closing the circuit consist of a mechanical lock 21 with two positions A and C which is connected to a key 22 in the shape of a U, placed in a constriction on the outside of the case and the rotation allows the lock to be placed in the desired position.
  • the means 30 for delaying the setting to fire comprise means 32 for programming a time delay, means 34 for switching the supply circuit of the starting resistor 12 as well as a capacitor 36 providing an intensity 12 during its discharge, the intensity I1 of the charging current of this capacitor being insufficient for cause the primer to ignite.
  • the programming means 32 are constituted by coding wheels 38 and by a microcontroller 40. These coding wheels are luminescent so as to allow programming also both at night and during the day.
  • the microcontroller 40 controls the opening and / or closing of the means switching 34.
  • these switching means 34 comprise first means 41 constituted by an electromechanical safety device 41 comprising a mechanical clock, associated with a mechanical inverter which is normally in the open position and which closes the circuit at the end of a period predetermined operation of this clock.
  • They comprise second means constituted by a transistor 50 whose source is connected to the power supply 10, the grid to the microcontroller 40 and the drain to the input of the inverter of the electromechanical assembly 41, and a transistor 55 whose source is connected to the starting resistor 12, the grid to the microcontroller 40 and the drain at the outlet of the inverter.
  • Third means consist of a switch 65, closing timed, disposed between the power supply 10 and the microcontroller 40.
  • drain 53 of transistor 50 is connected to a short transistor 60 circuit itself connected to the microcontroller 40 and to ground.
  • resistors 70,71,72 limiting the intensity of the current are arranged on the circuit upstream of the electromechanical means and between the microcontroller and transistor 55 so that in the event of failure of the transistors and electromechanical means, the starting resistance 12 is crossed by a current of insufficient intensity to cause ignition of the detonator.
  • signaling means 81 and 80 are arranged respectively downstream of the time-delayed closing switch 65 and in parallel with ignition resistance 12.
  • the means 35 constituted by the elements 10 and 36, are capable of generate, at the end of the delay time, an intensity 12 sufficient to activate the ignition resistor 12, the power supply 10 providing an intensity Il suitable for charging the capacitor and the latter providing an intensity 12 during its dump.
  • the programming means are constituted by an external programming device 100 and by means information transfer, by direct contact such as an RS232 socket or of the type emission / reception, for example with photo-transistors.
  • the circuit closing means are preferably constituted by a latch mechanical 21 at three positions A, B and C, position A in which all means electronics are grounded, position B in which capacitor 36 is at the earth and the other electronic means are supplied, position C which follows the position B and in which the capacitor 36 is connected to the circuit after a safety delay generated by the electromechanical safety device 41.
  • the external device 100 can be constituted by a microcomputer of the portable type in which software is introduced, this software allowing the user to indicate in particular the time of ignition either in the form of a date, then requiring the introduction of the programming date if it does not already exist in the microcomputer, either in the form of a delay time. After confirmation of the programming by the user, the data is transmitted, via an RS 232 type socket to one or more ignition devices simultaneously.
  • This external device 100 can also be constituted by an assembly comprising a power supply 110, a microcontroller 140, a display 145, two programming switches 146,147, and an on / off switch 112, and the transfer means comprise phototransistors, 148,149 associated to phototransistors arranged in the housing.
  • the selection of parameters is, in this case, carried out via a menu preprogrammed drop-down.
  • the data is displayed in blocks and all parameters linked to a block appear next to each other so that a overview of the evolution of each of them is maintained during block programming.
  • a trapping module 200 of the contact opening type is added to the means described in the first embodiment previously cited.
  • This module consists of a closed circuit, powered by the means previously described and comprising a number of contactors whose opening mode depends on the type of trapping, and connected to the micro-controller 40.
  • these contactors can be opening remotely controlled, or inertial, or more simply a trip wire resting on the ground in the vicinity of the igniter.
  • the batteries are placed in the case before use and the lock mechanical 21 is in position A, means 20 and 30 therefore not electrically powered.
  • the circuit of reception comprises two phototransistors 48,49 placed as close as possible to part of the housing which is transparent to radiation emitted by phototransistors 148,149 of the device 100.
  • the housing has a notch allowing a precise positioning of the phototransistors, respectively of the means of programming 100 and firing means, one opposite the other.
  • the micro-controller of the set 100 controls the progress of a menu which is registered by block on display 145, switching to the next parameter of the same block or to the next block by acting on one of the programming switches 146,147, the other used for the validation of the parameters and their transmission to the Firing.
  • the menu can, for example, include two blocks, one concerning the duration D1 desired time delay in day / hour / minute / second format, i.e. four parameters, and the other relating to the validation of these parameters and the transmission of these parameters via phototransistors 148,149, 48,49.
  • the validation of the block TRANSMISSION causes these parameters to be transferred from device 100 to priming device.
  • the microcontroller 40 sends back a copy of the parameters received by the device 100 which verifies their conformity with those emitted previously and issues an acknowledgment releasing the transmission.
  • microcomputer makes this synchronization operation even easier. Indeed, it suffices to connect the microcomputer to each of the RS232 type sockets of the various priming devices to be synchronized and then transfer settings to all of these devices simultaneously.
  • the firing means are then positioned on an explosive device adequate. In the case of a mine, it can be positioned on the objective to be destroyed, by the user who then proceeds to rotate the key 22 to position C then when it is removed from the case in order to prevent any access, by a person not enabled, at lock 21.
  • the microcontroller 40 deactivates the transistor 60 of short circuit, and activates transistor 50 which then becomes conducting.
  • the capacitor 36 then charges and at the end of a preprogrammed time Tp2, called charging time of the capacitor, the microcontroller 40 activates the transistor 55 which becomes conductive then allowing the discharge of the capacitor 36 through this transistor 55 and the starting resistor 12, the intensity 12 flowing in this the latter being sufficient to trigger the detonator.
  • Charging the capacitor only after a period of time delay increases the reliability of the device since no capacitor leakage does not occur during this period.
  • the charge time Tp2 of the capacitor is long compared to its discharge time.
  • the charging process of the capacitor alone can reach a non-degradable safety requirement.
  • the safety time is then that which is just less than the time that causes a significant charge of the capacitor, that is to say capable of causing the ignition of the primer during its discharge. It is adjustable by the charging current.
  • an electromechanical safety device 41 it is not necessary, and that the charge of the capacitor is carried out with the setting under voltage or before firing. However, in applications where the time to safety is very long, and / or when the trapping module is used, the use of the electromechanical safety device 41 is required.
  • the closing switch 65 can be inserted into the circuit to generate a delay of additional Tp3 safety before firing when the user turns the key from position A to position C.
  • This delay is, in this alternative embodiment, a operational security delay; during this period, which is an integral part of the duration D1, all switching functions of transistors 50, 60, 55, of the microcontroller 40 are inhibited.
  • the mechanical means timer clock electromechanical safety device 41 is triggered. At the end of a time Tp1 preprogrammed operation of this clock, it produces the switching of the mechanical inverter associated with it and therefore the closing of the part of the circuit located between transistor 50 and capacitor 36.
  • the switch 65 and the clock therefore constitute two security elements triggered simultaneously and of a different nature, one electric acts on the microcontroller 40 and the other, mechanical, acts on the capacitor 36, the priming of the detonator which cannot be carried out before the highest value of the times Tp1 and Tp3.
  • Another mode of operation of the device previously described consists in authorizing the firing of the primer 13 via the trapping module 200 at the expiration of the longest of the delays Tp1 and Tp3, and this, throughout the duration of programmed delay, and, if necessary, to inhibit transistors 50 and 55 to the expiration of this time delay, thus making the device inert and recoverable.
  • the reaction time between actuating the trapping and igniting the primer is, in this case, equal to Tp2.
  • the means of timing can be simplified as shown in Figure 5.
  • the device priming then comprises a power supply 310, in this case batteries, a time-delayed relay 330, a time-closed relay 335, a capacitor 336 and a starting resistor 12 of the primer 13.
  • the two relays are energized.
  • the relay 330 being first closed, the capacitor charges.
  • This relay 330 opens after a time Tp4, then relay 335 closes and capacitor 336 then discharges into the resistance 12, causing ignition of the primer 13.
  • the discharge of the capacitor feeds a solenoid whose activation causes the release of the electromechanical part which initiates the detonator.
  • trapping means With regard to trapping means, the accidental breaking of the wire tripping or opening of an inertial contactor when the ignition device is moved, cause the detonator to fire.
  • the priming cannot take place before the expiration of the Tp1 safety times intrinsic and Tp3 of operational security generated by the means electromechanical and / or time switch 65.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Electrotherapy Devices (AREA)
  • Programmable Controllers (AREA)

Claims (13)

  1. Zündvorrichtung einer Sprengkapsel, bestehend aus einer elektrischen Stromversorgung, welche eine erste Stromstärke (I1) an einen Schaltkreis mit Mitteln (30) zur Verzögerung der Betätigung eines Elementes (12) zum Abschuß eines Zünders (13) und an Mittel (35), die fähig sind, nach Ablauf der Verzögerungsdauer eine zweite Stromstärke (I2) zu erzeugen, die ausreicht, um das besagte Element (12) zu betätigen, liefert, dadurch gekennzeichnet, daß die erste Stromstärke (I1) der Versorgung nicht ausreicht, um das besagte Element (12) zu betätigen.
  2. Vorrichtung gemäß Patentanspruch 1, dadurch gekennzeichnet, daß die Mittel (35) aus einem Kondensator (36), Schaltvorrichtungen (41, 50, 55) und Steuermitteln dieser Schaltvorrichtungen bestehen, wobei diese Vorrichtung es ermöglicht, diesen Kondensator (36) während einer Ladezeit (Tp2) zu laden und ihn anschließend zu entladen, wobei das Entladen die Betätigung des Zünders (13) durch das Element (12) auslöst.
  3. Vorrichtung gemäß Patentanspruch 2, dadurch gekennzeichnet, daß die Steuermittel aus einer Mikrosteuereinheit (40) bestehen.
  4. Vorrichtung gemäß irgendeiner der Patentansprüche 2 und 3, dadurch gekennzeichnet, daß die Schaltvorrichtungen aus Transistoren (50, 55) bestehen.
  5. Vorrichtung gemäß irgendeiner der Patentansprüche 1 bis 4, dadurch gekennzeichnet, daß die Verzögerungsmittel Mittel (32) zum Programmieren der Verzögerungsdauer enthalten.
  6. Vorrichtung gemäß Patentanspruch 5, dadurch gekennzeichnet, daß diese Programmiermittel (32) mindestens ein elektrisch mit der Mikrosteuereinheit (40) verbundenes Codierrad (38) enthält.
  7. Vorrichtung gemäß Patentanspruch 6, dadurch gekennzeichnet, daß das Codierrad (38) lumineszierend ist.
  8. Vorrichtung gemäß Patentanspruch 5, dadurch gekennzeichnet, daß diese Programmiermittel externe Programmiermittel (100) sowie Mittel (101) zum Übertragen der programmierten Daten von diesen externen Mitteln auf die Mikrosteuereinheit (40) enthalten.
  9. Vorrichtung gemäß Patentanspruch 8, dadurch gekennzeichnet, daß die extemen Mittel eine elektrische Stromversorgung (110), eine Mikrosteuereinheit (140), ein Display (145), zwei Programmierschalter (146, 147) umfassen, und daß die Übertragungsmittel aus Phototransistoren (48, 49, 148, 149) bestehen.
  10. Vorrichtung gemäß Patentanspruch 8, dadurch gekennzeichnet, daß die externen Programmiermittel (100) aus einem Mikrocomputer bestehen, und daß die Datenübertragungsmittel (101) eine mit der Mikrosteuereinheit (40) verbundene elektrische Anschlußbuchse umfassen.
  11. Vorrichtung gemäß irgendeinem der vorstehenden Patentansprüche, dadurch gekennzeichnet, daß sie mechanische Verzögerungsmittel (41) enthält.
  12. Vorrichtung gemäß irgendeinem der Patentansprüche 4 bis 11, dadurch gekennzeichnet, daß sie Mittel (200) zum Drosseln oder zum absichtlichen Vorziehen des Abschusses des Zünders (13) umfaßt.
  13. Vorrichtung gemäß dem vorhergehenden Patentanspruch, dadurch gekennzeichnet, daß die Drosselmittel eine mit der Mikrosteuereinheit (40) verbundene lose Drahtleitung umfassen.
EP96943151A 1995-12-21 1996-12-20 Zündvorrichtung mit programmierbarer zündzeit Expired - Lifetime EP0880669B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9515229 1994-12-19
FR9515229A FR2742859B1 (fr) 1995-12-21 1995-12-21 Dispositif d'amorcage a temps programmable
PCT/FR1996/002035 WO1997023761A1 (fr) 1995-12-21 1996-12-20 Dispositif d'amorçage a temps programmable

Publications (2)

Publication Number Publication Date
EP0880669A1 EP0880669A1 (de) 1998-12-02
EP0880669B1 true EP0880669B1 (de) 1999-11-03

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ID=9485775

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96943151A Expired - Lifetime EP0880669B1 (de) 1995-12-21 1996-12-20 Zündvorrichtung mit programmierbarer zündzeit

Country Status (8)

Country Link
EP (1) EP0880669B1 (de)
AT (1) ATE186392T1 (de)
CA (1) CA2241810A1 (de)
DE (1) DE69605060T2 (de)
ES (1) ES2140917T3 (de)
FR (1) FR2742859B1 (de)
NO (1) NO983732L (de)
WO (1) WO1997023761A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6748869B1 (en) * 1998-12-16 2004-06-15 Delegation Generale Pour L'armement Batiment La Rotonde Device for firing a primer

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10139810B4 (de) * 2000-11-09 2014-10-16 Orica Explosives Technology Pty. Ltd. Spannungssensor zur Überwachung elektronischer Zündkreise
FR2934288B1 (fr) 2008-07-24 2014-02-14 Weber & Broutin Sa Dispositif d'amelioration acoustique pour sous-couche de revetement.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2673464B1 (fr) * 1980-06-20 1994-02-04 Etat Francais Delegue Armement Fusee a retard programmable et procede d'application.
ATE22173T1 (de) * 1982-05-12 1986-09-15 Prb Sa Elektrische schaltung fuer die zuendung eines detonators.
US4712477A (en) * 1985-06-10 1987-12-15 Asahi Kasei Kogyo Kabushiki Kaisha Electronic delay detonator
WO1987000265A1 (en) * 1985-06-28 1987-01-15 Moorhouse, D., J. Detonator actuator
DE4240263C1 (de) * 1992-12-01 1993-12-23 Honeywell Ag Zünder für ein Geschoß

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6748869B1 (en) * 1998-12-16 2004-06-15 Delegation Generale Pour L'armement Batiment La Rotonde Device for firing a primer

Also Published As

Publication number Publication date
DE69605060D1 (de) 1999-12-09
NO983732L (no) 1998-08-18
EP0880669A1 (de) 1998-12-02
ATE186392T1 (de) 1999-11-15
FR2742859A1 (fr) 1997-06-27
WO1997023761A1 (fr) 1997-07-03
ES2140917T3 (es) 2000-03-01
CA2241810A1 (fr) 1997-07-03
NO983732D0 (no) 1998-08-14
DE69605060T2 (de) 2000-02-24
FR2742859B1 (fr) 1998-02-20

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