EP2205930A2 - Système de détonation d'explosif à distance - Google Patents

Système de détonation d'explosif à distance

Info

Publication number
EP2205930A2
EP2205930A2 EP08871869A EP08871869A EP2205930A2 EP 2205930 A2 EP2205930 A2 EP 2205930A2 EP 08871869 A EP08871869 A EP 08871869A EP 08871869 A EP08871869 A EP 08871869A EP 2205930 A2 EP2205930 A2 EP 2205930A2
Authority
EP
European Patent Office
Prior art keywords
transmitter
receiver
identification code
detonator
electro
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Withdrawn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
EP08871869A
Other languages
German (de)
English (en)
Inventor
Brady A. Plummer
Delmer D. Fisher
Ian A. Knopf
Robert W. Plummer
Benjamin J. Galanti
Joe L. Lewis
Marion P. Hensley
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.)
Raytheon Co
Original Assignee
Raytheon Co
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 Raytheon Co filed Critical Raytheon Co
Publication of EP2205930A2 publication Critical patent/EP2205930A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F42D1/05—Electric circuits for blasting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C17/00—Fuze-setting apparatus
    • F42C17/04—Fuze-setting apparatus for electric fuzes
    • 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

Definitions

  • This disclosure generally relates to explosives, and more particularly, to a remote explosive detonation system for explosives and a method of operating the same.
  • Explosives used in military combat may be initiated by detonation devices. Due to the destructive nature of explosives, these detonation devices may incorporate various safety features to avoid premature detonation.
  • a shock tube is a type of detonation device that transmits a detonation signal to a remotely located explosive using a pressure signal.
  • the shock tube may be made of non-conductive materials, which are not generally susceptible to premature detonation caused by stray electro-magnetic radiation.
  • a remote explosive detonation system includes a transmitter and at least one receiver configured with a detonator.
  • the transmitter transmits an electro-magnetic signal with a transmitter identification code that may be received by the receiver.
  • the receiver initiates the detonator if the transmitter identification code matches an internal identification code stored in the receiver.
  • one embodiment of the remote explosive detonation system may provide a relatively reliable approach for remotely detonating explosives that reduces detection of the source of the detonation.
  • Known detonation systems use elongated shock tubes that convey a detonation signal using an impulse blast of pressurized air. These shock tubes, however, often leave a residual trail indicating the source of the explosive blast, which may compromise the security of personnel using the explosives.
  • the remote explosive detonation system of the present disclosure uses a wireless signal that may be substantially difficult to trace following detonation, thus alleviating security issues associated with enemy response following use of remotely configured explosives.
  • the remote explosive detonation system may be relatively quicker to implement than known detonation systems that require spooling shock tube from the explosive to its initiation point. Additionally, the location of the initiation point may be concealed more effectively then known explosive detonation systems using shock tubes that may leave a residual trail of shock tube material following detonation of the explosive.
  • FIGURES IA and IB are front perspective and rear perspective views, respectively, of one embodiment of a transmitter of the remote explosive detonation system according to the teachings of the present disclosure
  • FIGURES 2A and 2B are front perspective and rear perspective views, respectively, of one embodiment of a receiver that may be used with the transmitter of FIGURES IA and IB
  • FIGURE 3A is a perspective view of one embodiment of a claw accessory clip that may be configured on the receiver of FIGURES 2A and 2B;
  • FIGURE 3B is a perspective view of one embodiment of a shock tube accessory clip that may be configured on the receiver of FIGURES 2A and 2B;
  • FIGURE 4 is a diagram view of remote explosive detonation system showing several elements of the transmitter and the receiver;
  • FIGURE 5 is a perspective view showing the receiver of FIGURES 2A and 2B docked on the transmitter of FIGURES IA and IB;
  • FIGURE 6 is a flowchart showing a series of actions that may be performed by the remote explosive detonation system to remotely detonate an explosive.
  • a shock tube is a detonation device that may be used to detonate an explosive, such as cyclotrimethylene trinitramine (C4) .
  • C4 cyclotrimethylene trinitramine
  • shock tubes may have drawbacks. For example, following detonation of the explosive, a shock tube may leave a residual trail indicating the location of the triggering device.
  • FIGURES IA through 2B show one embodiment of a remote explosive detonation system 10.
  • Remote explosive detonation system 10 generally includes a transmitter 12 and at least one receiver 14.
  • the transmitter 12 transmits an electro-magnetic signal that may be received by receiver 14 to detonate an explosive (not shown) .
  • the transmitted electro-magnetic signal may include an identification code that may be used by the receiver 14 to ensure validity of the transmitted signal.
  • remote explosive detonation system 10 may provide relatively secure remote explosive detonation of explosives without creating a residual trail as typically produced by shock tubes .
  • Transmitter 12 comprises a handheld transmitter housing 16 that is configured with an antenna 18, transmitter docking connector 20, an operating mode dial 22, and one or more trigger buttons 24.
  • Transmitter housing 16 has a shape suitable for handling by the hand of a user.
  • Transmitter 12 may have multiple independently operated actuation mechanisms that are simultaneously actuated for detonating the explosive. In this manner, the possibility of inadvertent detonation of the explosive may be reduced.
  • two trigger buttons 24 are implemented.
  • Other embodiments may include any suitable type and quantity of actuation mechanisms, such as two or more levers, or one button and one lever.
  • Receiver 14 comprises a receiver housing 30 that is configured with a receiver docking connector 32, an arming button 34, an arming/safety pin 36, an indicator light 38, and a detonator 40.
  • Receiver docking connector 32 is engageable with transmitter docking connector 20.
  • receiver housing 30 has outer dimensions of approximately 2.0 inches by 2.0 inches by 1.0 inches. In other embodiments, receiver housing 30 may have any suitable size.
  • Arming/safety pin 36 is removable from receiver housing 30. Detonation is prevented when arming/safety pin 36 is engaged in receiver housing 30. Once arming/safety pin 36 is removed, receiver 14 may be armed and ready to initiate detonation upon a valid signal from the transmitter 12. Arming button 34 may be spring loaded such that removal of the arming/safety pin 36 allows the arming button 34 to project outwardly from the receiver housing 30.
  • the indicator light 38 may be any suitable source of light, such as a light emitting diode (LED) and may provide visual indication of the armed status of the receiver 14. In one embodiment, the indicator light 38 emits only infrared light. In this manner, indicator light 38 may be visible only through night vision goggles .
  • LED light emitting diode
  • Detonator 40 is configured to explode upon receipt of a valid signal from transmitter 12.
  • detonator 40 includes only secondary explosive materials. That is, detonator 40 may be relatively free of any primary explosive material that may be susceptible to premature detonation.
  • detonator 40 is an exploding foil initiator (EFI) , such as a low energy exploding foil initiator
  • LEEFI (LEEFI) , that may be initiated by an electrical pulse of energy.
  • FIGURES 3A and 3B show two differing types of accessory clips 44a and 44b that may be configured on receiver housing 30.
  • Accessory clip 44a is a claw accessory clip having multiple claw- like protrusions 46 that may be impaled in explosives having a clay-like consistency, such as C4 explosive material.
  • Accessory clip 44b is a shock tube accessory clip having an elongated cavity 48 for placement of a section of shock tube inside.
  • Another embodiment of an accessory clip (not shown) may include a detonation cord accessory clip that provides coupling of the receiver 14 to a detonation cord.
  • FIGURE 4 is a diagram view of remote explosive detonation system 10 showing several elements of transmitter 12 and receiver 14.
  • Transmitter 12 and receiver 14 each include a circuit board 50 and 52 that is powered by a battery 54 and 56.
  • Circuit board 50 of transmitter 12 is coupled to trigger buttons 24, operating mode dial 22, transmitter docking connector 20, and antenna 18.
  • Circuit board 52 of receiver 14 is coupled to an arming/safety pin switch 58, receiver docking connector 32, arming button 34, indicator light 38, and detonator 40, and an antenna 68.
  • circuit boards 50 and 52 each include a processor 60 and 62 that executes instructions stored in a memory 64 and 66.
  • circuit boards 50 and 52 may include any suitable form of logic for executing the various features of transmitter 12 and receiver 14, respectively.
  • Transmitter 12 may include any suitable electrical circuit for generating a signal that is transmitted through antenna 18.
  • transmitter 12 uses a spread spectrum signal transmission technique to transmit the signal, which may yield a low probability of intercept (LPI) , a low probability of jamming (LPJ) , and/or a low probability of spoofing (LPS) .
  • the spread spectrum signal transmission technique is a frequency hopping process in which the transmitted signal may be alternatively transmitted over differing frequencies. Because the transmitted electro-magnetic energy is spread over a relatively wide frequency range, the signal may be relatively difficult to jam, spoof, or intercept.
  • the frequency hopping process used to generate the spread spectrum signal may be proprietary to reduce unwanted reception of the transmitted signal from others.
  • the transmitter 12 and receiver 14 may use forward error correction (FEC) techniques to further reduce susceptibility to unwanted electro-magnetic radiation.
  • FEC forward error correction
  • information may be transferred from transmitter 12 to receiver 14 using data packets. These data packets may be deciphered by receiver according to a preamble and/or a post-amble of the received data packet to verify proper receipt of signals from transmitter 12.
  • receiver 14 may perform a hash function, such as a cyclic redundancy check (CRC) to verify proper receipt of signals from transmitter 12.
  • transmitter 12 may transmit commands to receiver 14 using specific command words, such as logical words having greater than 65,000 combinations to reduce the possibility of misinterpretation of commands by receiver 14.
  • the transmitter 12/receiver 14 combination may have any suitable range that provides a relatively safe distance of transmitter 12 from receiver 14 when explosive is detonated.
  • an effective transmission range of greater than approximately 50 meters may provide sufficient protection from shrapnel or other debris caused by the detonation of explosives commonly used with remote explosive detonation system 10.
  • Receiver 14 may include any suitable electrical circuit for receiving and processing the transmitted signal from transmitter 12.
  • Receiver 14 includes an antenna 68 that may be disposed within receiver housing 30 for receiving the transmitted signal.
  • antenna 68 is a patch antenna.
  • memory 66 of receiver 14 stores a receiver identification code 70 that may be compared with a transmitter identification code 72 that is modulated onto the signal transmitted by transmitter 12. Only when transmitter identification code 72 matches receiver identification code 70 is detonation of detonator 40 allowed.
  • FIGURE 5 shows the receiver 14 docked on the transmitter 12 by coupling the transmitter docking connector 20 with the receiver docking connector 32. When receiver docking connector is coupled to transmitter docking connector 20, receiver 14 may be programmed with the identification code from the transmitter 12.
  • multiple receivers 14 may be programmed to detonate simultaneously in response to a single signal from transmitter 12. To detonate multiple receivers 14 simultaneously, each of the multiple receivers 14 may be programmed to respond to transmitter 12 by sequentially docking each receiver 14 with transmitter 12.
  • remote explosive detonation system 10 may be integrated or separated.
  • the transmitter 12 may be implemented as a stand-alone device or may form a portion of another larger system.
  • the operations of remote explosive detonation system 10 may be performed by more, fewer, or other components.
  • the operations of transmitter 12 may generate an electro-magnetic signal that is relayed through a wireless repeater, such that receiver 14 receives the transmitted electro-magnetic signal from the wireless repeater.
  • operations of remote explosive detonation system 10 may be performed using any suitable logic comprising software, hardware, and/or other logic.
  • ach refers to each member of a set or each member of a subset of a set.
  • FIGURE 6 shows one embodiment of a series of actions that may be performed to program and use remote explosive detonation system 10.
  • act 100 the process is initiated.
  • operating mode dial 22 is set to the programming mode.
  • actuation of any receivers 14 may be inhibited. In this manner, premature detonation may be reduced.
  • Receiver 14 is docked to transmitter 12 by coupling receiver docking connector 32 to transmitter docking connector 20.
  • receiver 14 includes an indicator light 38 that indicates its operating condition. For example, indicator light 38 may become illuminated when receiver 14 is docked on transmitter 12 to indicate that its circuit 52 is in an operational state and the battery is supplying ample electrical power for its operation.
  • identification code 72 stored in memory 64 of transmitter 12 is transferred to the memory 66 of receiver 14.
  • commencement of identification code transferal is provided by actuation of trigger buttons 24.
  • transferal of transmitter identification code 72 commences when receiver docking connector 32 is coupled to transmitter docking connector 20.
  • indicator light 38 may generate a blinking pattern indicating proper receipt and storage of identification code 70 in its internal memory 66.
  • the blinking pattern may be indicative of the status of the receiver's battery 56. For example, indicator light 38 may blink twice to indicate a fully charged battery while a three blink sequence may indicate a partially charged battery
  • receiver 14 is removed from transmitter 12 and coupled to a suitable explosive device. Receiver 14 may be coupled to various types of explosive devices using one of several accessory clips 44 that may be mounted on receiver 14. In one embodiment, receiver 14 may incorporate a delay activation mechanism that inhibits detonation for a period of time following removal from transmitter 12. In one embodiment, this delay time may be approximately 4 seconds.
  • acts 102 through 108 may be repeated with another receiver 14. If only one receiver 14 is to be detonated, however, processing continues at act 112. in act 112, operating mode dial 22 may be moved from the programming mode to a test mode.
  • operating mode dial 22 may be moved to the disarm mode. While in the disarm mode of operation, actuation of trigger buttons 24 causes one or all of the one or more receivers 14 to be disarmed. In one embodiment, disarming of receivers 14 may be accomplished by erasing its stored internal identification code 70. In this manner, receipt of an ensuing transmission signal including an identification code will not cause the receiver 14 to detonate the detonator 40.
  • the one or more receivers 14 go to a storage mode.
  • the one or more receivers 14 may not detonate from detonation signals transmitted by transmitter 12, but may be programmed by transmitter 12 in the future according to acts 102, through 108.
  • operating mode dial 22 is moved from the programming mode to the operation mode.
  • the trigger buttons 24 are no longer inhibited from generating a signal that may be used to detonate each of the receivers 14 programmed in acts 102 through 108.
  • act 118 the one or more receiver 14 is detonated by transmitter 12 by actuating trigger buttons 24.
  • remote explosive detonation system 10 has remotely detonated an explosive and the process ends in act 120.
  • Remote explosive detonation system 10 may have multiple safety mechanisms that reduce premature detonation.
  • the signal transmitted by transmitter 12 may include a spread spectrum transmission, forward error correction, layered coding, and/or error detection techniques to reduce interception or jamming by others.
  • detonator 40 may be void of any primary explosive material that is generally prone to premature detonation.
  • remote explosive detonation system 10 may provide a relatively secure method for detonating one or more explosive devices from a distance using radio frequency transmission techniques in relatively reliable manner.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Selective Calling Equipment (AREA)

Abstract

Selon un mode de réalisation de l'invention, un système de détonation d'explosif à distance comprend un émetteur et au moins un récepteur munis d’un détonateur. L'émetteur émet un signal électromagnétique pourvu d’un code d'identification d'émetteur qui peut être reçu par le récepteur. Si le code d’identification d’émetteur correspond à un code d’identification interne stocké dans le récepteur, le récepteur amorce le détonateur.
EP08871869A 2007-11-09 2008-11-07 Système de détonation d'explosif à distance Withdrawn EP2205930A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US247607P 2007-11-09 2007-11-09
PCT/US2008/082837 WO2009097036A2 (fr) 2007-11-09 2008-11-07 Système de détonation d'explosif à distance

Publications (1)

Publication Number Publication Date
EP2205930A2 true EP2205930A2 (fr) 2010-07-14

Family

ID=40913457

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08871869A Withdrawn EP2205930A2 (fr) 2007-11-09 2008-11-07 Système de détonation d'explosif à distance

Country Status (5)

Country Link
US (1) US20110174181A1 (fr)
EP (1) EP2205930A2 (fr)
AU (1) AU2008349426A1 (fr)
CA (1) CA2704480A1 (fr)
WO (1) WO2009097036A2 (fr)

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Also Published As

Publication number Publication date
WO2009097036A3 (fr) 2009-10-29
CA2704480A1 (fr) 2009-08-06
WO2009097036A2 (fr) 2009-08-06
AU2008349426A1 (en) 2009-08-06
US20110174181A1 (en) 2011-07-21

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