WO2003107542A2 - Dispositif de transfert de signaux - Google Patents

Dispositif de transfert de signaux Download PDF

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Publication number
WO2003107542A2
WO2003107542A2 PCT/US2003/018611 US0318611W WO03107542A2 WO 2003107542 A2 WO2003107542 A2 WO 2003107542A2 US 0318611 W US0318611 W US 0318611W WO 03107542 A2 WO03107542 A2 WO 03107542A2
Authority
WO
WIPO (PCT)
Prior art keywords
signal
output
input
electrical
electric
Prior art date
Application number
PCT/US2003/018611
Other languages
English (en)
Other versions
WO2003107542A3 (fr
WO2003107542B1 (fr
Inventor
David B. Novotney
John A. Graham
Original Assignee
Ensign-Bickford Aerospace & Defense Company
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 Ensign-Bickford Aerospace & Defense Company filed Critical Ensign-Bickford Aerospace & Defense Company
Priority to AU2003243539A priority Critical patent/AU2003243539A1/en
Publication of WO2003107542A2 publication Critical patent/WO2003107542A2/fr
Publication of WO2003107542A3 publication Critical patent/WO2003107542A3/fr
Publication of WO2003107542B1 publication Critical patent/WO2003107542B1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C11/00—Electric fuzes
    • F42C11/02—Electric fuzes with piezo-crystal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/10—Initiators therefor
    • F42B3/113—Initiators therefor activated by optical means, e.g. laser, flashlight
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
    • F42D1/04—Arrangements for ignition
    • F42D1/043—Connectors for detonating cords and ignition tubes, e.g. Nonel tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
    • F42D1/04—Arrangements for ignition
    • F42D1/045—Arrangements for electric ignition

Definitions

  • This invention relates to signal transfer devices and, in particular, to devices for converting non-electrical signals to electrical signals that can be conveyed electrically to a remote location.
  • U.S. Patent 5,435,248 to Rode et al, dated July 25, 1995 and entitled "Extended Range Digital Delay Detonator” discloses an electronic delay detonator for use on the end of a shock tube signal line 10.
  • the detonator contains a lead azide booster charge 20 positioned to receive a non-electric initiation signal from the shock tube 10.
  • the booster charge 20 is positioned in proximity to a piezoelectric generator 30.
  • the booster charge 20 Upon receipt of a non-electric initiation signal from shock tube 10, the booster charge 20 detonates, causing the piezoelectric generator 30 to produce an electrical pulse that powers the digital delay circuitry and provides energy for the electrical initiation of the output charge in the detonator.
  • U.S. Patent 5,377,592 to Rode et al, dated January 3, 1995 and entitled “Impulse Signal Delay Unit”, discloses an in-line signal delay unit attached to the end of the length of shock tube 14.
  • the unit comprises a booster charge and a piezoelectric generator for converting a non-electric initiation signal in the shock tube into an electrical signal.
  • the electrical signal is conveyed via electrical leads, 30a, 30b to the delay module 32.
  • Delay module 32 is connected via output.leads, 44a, 44b to an output detonator 48, which contains a bridgewire 45, and an igniter element 46 and an output charge 54.
  • a non-electric initiation signal is transmitted by shock tube 14 and is converted via piezoelectric generator 28 to an electrical pulse that powers the delay module 32.
  • an electrical signal is emitted to output leads 44a, 44b to generate an non-electric output signal from output detonator 48.
  • Detonator 48 can then initiate a signal in one or more other lengths of shock tube 16.
  • This invention relates to a communication device for receiving and emitting nonelectrical signals, comprising a signal-receiving transducer in an input housing for receiving a non-electrical input signal and converting the non-electric input signal into an electrical signal, a signal conduit comprising an electrical conductor having an input end and at least one output end, with the input end of the electrical conductor connected to the signal-receiving transducer to receive and conduct the electrical signal, and an output initiation element in an output housing on at least one output end of the electrical conductor for emitting a non-electric output signal from the electrical signal.
  • the signal-receiving transducer may comprise a piezoelectric element configured to generate an electrical signal in response to a percussive input signal.
  • there may be an input charge in the input housing in signal transfer relation to the signal-receiving transducer.
  • the electrical conductor may comprise a plurality of output ends and an output initiation element in an output housing on each output end; and the signal conduit may optionally comprise a metal shield within which the conductor is disposed.
  • At least one output initiation element may comprise one of a solid state bridge element and a piezoelectric element.
  • an output initiation element may comprise a voltage-protected SCB.
  • an output initiation element may comprise one of a bridgewire and an exploding foil.
  • the output housing may contain an output charge of reactive material in signal transfer relation to the output initiation element.
  • This invention also relates to a method for initiating at least one non-electric effector in response to a non-electric input signal. The method comprises delivering a non-electric input signal to a signal-receiving transducer in an input housing whereby to convert the non-electrical input signal into an electrical signal, conveying the electrical signal along a conduit from the first housing to at least one output initiation element in an output housing, and emitting an initiation signal from the output initiation element in the output housing to initiate the effector.
  • the non-electric input signal may comprise a percussive signal and the signal-receiving transducer may comprise a piezoelectric element.
  • delivering the non-electric input signal comprises striking the piezoelectric element with a firing pin.
  • delivering the non-electric input signal may comprise initiating a charge of reactive material that is disposed in signal transfer relation to the piezoelectric element.
  • Figure 1 is a schematic view of a signal transfer device according to one embodiment of this invention.
  • Figure 2 is a schematic view of a signal transfer device according to a second embodiment of this invention.
  • Figure 3 is a schematic cross-sectional view of an assault weapon that utilizes a signal transfer device according to one embodiment of this invention.
  • Figure 4 is a close-up schematic view of the input terminus of the signal transfer device in Figure 3.
  • Non-electric signal transmission lines to carry a non-electric signal from one terminus to another that may be connected to a device that requires a non-electric initiation signal for its operation (an "effector").
  • Common non-electric signal transmission lines include shock tube, thin line explosive (TLX), flexible confined detonating cord (FCDC), and detonating cord. These types of lines can carry and emit only one signal.
  • TLX thin line explosive
  • FCDC flexible confined detonating cord
  • This invention provides cost savings in the replacement of non-electric signal transfer lines with wire, cost savings in the elimination of manifolds and the connectors associated with them, increased reliability (since many of the components can be tested in the manufacturing process), and system utility in environments where non-electric explosive components could not be used.
  • the present invention is a signal transmission system that can receive a non-electric input signal such as a mechanical shock, detonation, or pyrotechnic signal at an input terminus, convert that signal to an electrical signal, and convey the electrical signal to at least one output terminus at a remote location where the signal is converted to a non-electric output.
  • the input terminus comprises a signal-receiving transducer e.g., a piezoelectric, electrochemical, or photovoltaic element in an input housing.
  • the input terminus is connected by a signal conduit that comprises an electrical conductor (e.g., an electrical wire harness or a flex cable) having at least one output end at a remote location (i.e., outside the input housing), where the signal is received and there converted to a non-electric signal that is used for a desired function of an output initiation element.
  • the length of the conductor, and therefore the distance from the input terminus to the remote location can be from less than one inch to greater than 100 feet.
  • the signal conduit can connect the input terminus to a plurality of output termini, i.e., the electrical conductor may branch off from the input terminus to a plurality of output termini.
  • An output terminus may comprise an output housing for an initiation element such as a bridgewire, exploding foil, or a solid state bridge element (e.g., SCB) which can be initiated by the electrical signal. There may be a brisant output charge (explosive or pyrotechnic) in the output housing that is initiated by the initiation element.
  • the output terminus may comprise an output transducer, e.g., a piezoelectric transducer, to convert the electrical signal into a physical pulse.
  • the system 10 comprises a non-electric input terminus 12 which is connected by a signal conduit that comprises an electrical conductor, i.e., transfer wiring 14 (which may comprise a flex circuit) to output termini 16a and 16b.
  • an electrical conductor i.e., transfer wiring 14 (which may comprise a flex circuit)
  • Input terminus 12 comprises a metal casing or housing 18 within which a detonation or pyrotechnic input charge 20 is closely coupled to an optional buffering element 22.
  • a buffering element which is well-known in the art, is to attenuate or shape the shock wave that is generated from the input charge for a better conversion by the signal-receiving transducer 24.
  • the housing 18 contains transducer 24 (e.g., a piezoelectric element) which receives the buffered shock input from input charge 20 and converts its mechanical energy into an electrical charge.
  • the electrical charge generates a voltage potential that causes current to flow through the transfer wiring which branches to connect to the output termini 16a, 16b.
  • the output termini 16a, 16b may comprise electrical output initiation elements 26a, 26b, such as a bridgewire, exploding foil, semiconductor bridge (SCB) or other solid state bridge element, etc., encased in metal shells or output housings 28a, 28b.
  • electrical output initiation elements 26a, 26b such as a bridgewire, exploding foil, semiconductor bridge (SCB) or other solid state bridge element, etc.
  • SCB semiconductor bridge
  • Low energy SCBs typically function with less than 3 milli Joules of energy.
  • the output initiation element converts the electrical signal to a non-electrical signal (physical impulse, detonation, deflagration, plasma, heat, etc.) that can initiate an associated effector.
  • the output initiation element may comprise a voltage-protected SCB, which has an anti-fuse layer built into the device that acts as a switch. There must be a voltage of greater than 140V (between 150V and 250V) across the leads, i.e., across the bridge, to turn the switch on, i.e., to allow current flow through thebridge.
  • Output housings 28a, 28b also contain optional output charges 30a, 30b that are sensitive to initiation by the output initiation elements 26a, 26b.
  • the output termini could thus perform a number of different functions, such as motor ignition or stage separation on a launch vehicle or tactical missile, skin severance on a weapon system, initiation for an automotive ai bag or pre- tensioner event, munitions dispensing for an aircraft application, or signal transfer in any other type of system that requires explosive initiation.
  • the transfer wiring 14 is optionally encased in a metallic shield 32.
  • the effect of the metal housings 18, 28a, 28b and metal shield 32 together create a Faraday cage around the signal-receiving transducer, the transfer wiring and the output transducer, thus mitigating interference from external electrical fields, stray voltage, or electrostatic discharge (ESD).
  • ESD electrostatic discharge
  • the input terminus 12 may be equipped for securing a signal-fransn ⁇ ting device, e.g., a squib, detonator or a length of non-electric signal transmission line (e.g., detonating cord), in signal transfer relation to the input charge or, if there is no input charge, in impulse transfer relation to the transducer.
  • a signal-fransn ⁇ ting device e.g., a squib, detonator or a length of non-electric signal transmission line (e.g., detonating cord)
  • the input terminus may be fitted with a connector block of the kind shown in, e.g., U.S. Patent 5,398,611 to Michna et al, dated March 21, 1995, or U.S.
  • Patent 5,703,320 to Lucca et al, dated December 30, 1997 both of which are hereby incorporated herein by reference
  • the input charge 20 and buffering element 22 can be eliminated if sufficient mechanical/shock energy is transferred directly to the transducer 24 from an external source, such as a spring-driven firing pin or a detonation charge, to generate the desired output signal from the transducer.
  • the system 10' comprises an input terminus 12 and transfer wiring 14 like those of Figure 1.
  • the output termini 34a, 34b instead of comprising bridge elements, contain piezoelectric elements 32a, 32b as the output transducers.
  • the high current energy from the input terminus 12 is received by piezoelectric elements 32a, 32b, via transfer wiring 14, and causes them to produce mechanical responses, e.g., physical pulses.
  • the piezoelectric elements 32a, 32b can be pressed against a charge of explosive material so that the movement of the piezoelectric element initiates the explosive material.
  • One or more output termini could also be used to affect the surface of another device, e.g., the piezoelectric elements 32a, 32b could be placed against the skin of an airplane to assist in de-icing the plane by imposing momentary deflections on the sldn material.
  • FIG. 3 A block diagram illustrating an exemplary system for weapon 40 .
  • weapon 40 comprises a barrel or tube 42 within which is disposed a projectile 44.
  • the projectile 44 may be, e.g., an armor-piercing shell that may comprise a warhead 46 and a rocket motor 48.
  • the warhead 46 contains a fusing apparatus 50, which may include a piston actuator or other initiating device known in the art.
  • the firing system for weapon 40 includes a signal transfer device in accordance with this invention.
  • the device comprise an input terminus 52, an output terminus 54 situated within the rocket motor 48 so that it can ignite the motor, and transfer wiring 56 connected between the input terminus 52 and the output terminus 54, for conveying electrical signal from one terminus to the other.
  • the warhead 46 contains an electrically triggered fusing apparatus 50 that is connected to transfer wiring 56 and that constitutes a second output terminus.
  • Input terminus 52 is positioned adjacent to a spring-driven firing pin mechanism 58 which comprises part of a conventional triggering mechanism.
  • input terminus 52 comprises a mounting sleeve or housing 66 that contains a percussion-sensitive primer 60 held in housing 66 by a primer seat 60a, a small booster charge 62 that may comprise lead azide and a piezoelectric signal- receiving transducer 64.
  • Primer seat 60a provides a short off-set shoulder or touch hole 68 between the primer 60 and the booster charge 62, which imposes a distance between them but nevertheless positions the primer so that it can initiate the booster charge.
  • the booster charge 62 is configured and positioned so that, upon initiation, it can cause the piezoelectric transducer 64 to generate an adequate pulse of electricity into transfer wiring 56.
  • Input terminus 52 is mounted in a positioning bracket or body 70 which holds input terminus 52 in position to receive the non-electric input from the firing pin mechanism 58.
  • the user aims the weapon and employs the triggering mechanism to cause firing mechanism 58 ( Figure 3) to drive firing pin 58a to strike the percussion- sensitive primer 60 of input terminus 52.
  • the primer 60 initiates the booster charge 62, which generates a detonation output that causes the piezoelectric transducer 64 to generate an electrical pulse that is delivered to wiring 56.
  • the electrical pulse is conveyed via wiring 56 to the output terminus 54, which comprises a conventional electrical initiating squib which contains a bridge element and a charge of reactive (explosive or pyrotechnical) material.
  • the bridge element converts the electrical signal to heat or other non-electric output sufficient to initiate the reactive material in the squib so that the squib can generate its brisant output.
  • the squib in turn, initiates the rocket motor 48.
  • Part of the electrical pulse from the piezoelectric transducer 64 is branched off to another output terminus which is coupled to fusing apparatus 50 and which has an output initiation element suited to initiate the fusing apparatus 50 of the warhead in conjunction with the firing of the rocket projectile.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Air Bags (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

La présente invention concerne un système de transmission de signaux (10) qui peut recevoir un signal d'entrée non électrique tel qu'un choc mécanique, une détonation, ou un signal pyrotechnique sur un terminal d'entrée (12), convertir ledit signal en un signal électrique et acheminer ledit signal électrique vers au moins un terminal de sortie (16a, 16b) situé à un emplacement distant où le signal est converti en une sortie non électrique. Afin de convertir le signal d'entrée non électrique en un signal électrique, le terminal d'entrée (12) comprend un transducteur de réception, par exemple, un élément piézo-électrique, électrochimique, ou photovoltaïque. Le terminal d'entrée (12) est connecté par câblage de transfert (14) (par exemple, à l'aide d'un faisceau électrique ou d'un câble flexible) à l'emplacement distant, où il est reçu par le ou les terminaux de sortie (16a, 16b) au niveau duquel/desquels il est converti en un signal non électrique qui est utilisé pour une fonction souhaitée. La longueur du câblage de transfert (14), et par conséquent la distance entre le terminal d'entrée (12) et l'emplacement distant, peut être comprise entre moins d'un pouce et supérieure à 100 pieds. Eventuellement, le câblage de transfert (14) peut relier le terminal d'entrée (12) à une pluralité de terminaux de sortie (16a, 16b). Un terminal de sortie peut en outre éventuellement comprendre un élément de pontage explosif (pont semi-conducteur, inflammateur, feuille explosive) qui peut être amorcé par le signal électrique et l'élément de pontage peut amorcer une charge de sortie brisante (explosive ou pyrotechnique). Dans une variante, le terminal de sortie peut comprendre un transducteur de sortie, par exemple, un transducteur piézo-électrique, destiné à convertir le signal électrique en une impulsion physique.
PCT/US2003/018611 2002-06-12 2003-06-11 Dispositif de transfert de signaux WO2003107542A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003243539A AU2003243539A1 (en) 2002-06-12 2003-06-11 Signal transfer device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US38857402P 2002-06-12 2002-06-12
US60/388,574 2002-06-12

Publications (3)

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WO2003107542A2 true WO2003107542A2 (fr) 2003-12-24
WO2003107542A3 WO2003107542A3 (fr) 2004-10-21
WO2003107542B1 WO2003107542B1 (fr) 2004-12-16

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US (1) US20040031411A1 (fr)
AU (1) AU2003243539A1 (fr)
WO (1) WO2003107542A2 (fr)

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PE20060926A1 (es) * 2004-11-02 2006-09-04 Orica Explosives Tech Pty Ltd Montajes de detonadores inalambricos, aparatos de voladura correspondientes y metodos de voladura
AU2006212875B2 (en) * 2005-02-08 2011-06-02 Dyno Nobel Inc. Delay units and methods of making the same
CA2645206C (fr) * 2006-04-28 2014-09-16 Orica Explosives Technology Pty Ltd Relais d'amorcage sans fil et procedes d'abattage a l'explosif
US8794152B2 (en) 2010-03-09 2014-08-05 Dyno Nobel Inc. Sealer elements, detonators containing the same, and methods of making
US8522682B1 (en) * 2010-09-23 2013-09-03 The United States Of America As Represented By The Secretary Of The Navy Advanced grenade concept with novel placement of MEMS fuzing technology
EP3374729B1 (fr) * 2015-11-09 2019-10-02 Detnet South Africa (PTY) Ltd Détonateur sans fil
CN113804060B (zh) * 2021-08-30 2023-06-06 四川航天川南火工技术有限公司 一种多进多出传爆路线自定义的组合式非电网络传爆结构

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US3538750A (en) * 1968-04-26 1970-11-10 Panametrics High temperature ultrasonic measuring system
US4674047A (en) * 1984-01-31 1987-06-16 The Curators Of The University Of Missouri Integrated detonator delay circuits and firing console
US5377592A (en) * 1991-07-09 1995-01-03 The Ensign-Bickford Company Impulse signal delay unit
US5435248A (en) * 1991-07-09 1995-07-25 The Ensign-Bickford Company Extended range digital delay detonator
US5595497A (en) * 1995-03-01 1997-01-21 Tescorp Seismic Products, Inc. Underwater electrical connector
US5747722A (en) * 1996-01-11 1998-05-05 The Ensign-Bickford Company Detonators having multiple-line input leads
US6082264A (en) * 1996-12-19 2000-07-04 Sasol Mining Initiators (Proprietary) Limited Connectors for wired networks for detonators

Also Published As

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AU2003243539A1 (en) 2003-12-31
US20040031411A1 (en) 2004-02-19
WO2003107542A3 (fr) 2004-10-21
WO2003107542B1 (fr) 2004-12-16
AU2003243539A8 (en) 2003-12-31

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