WO2006070170A1 - Amorce pyro-electronique a circuit de shuntage de pont electrothermique - Google Patents
Amorce pyro-electronique a circuit de shuntage de pont electrothermique Download PDFInfo
- Publication number
- WO2006070170A1 WO2006070170A1 PCT/FR2005/051145 FR2005051145W WO2006070170A1 WO 2006070170 A1 WO2006070170 A1 WO 2006070170A1 FR 2005051145 W FR2005051145 W FR 2005051145W WO 2006070170 A1 WO2006070170 A1 WO 2006070170A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- shunt
- primer
- bridge
- state
- ignition
- Prior art date
Links
Classifications
-
- 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
- F42B3/18—Safety initiators resistant to premature firing by static electricity or stray currents
- F42B3/182—Safety initiators resistant to premature firing by static electricity or stray currents having shunting means
Definitions
- the present invention relates to a pyroelectronic primer with an electrothermal bridging circuit. It has applications in the field of pyrotechnics for at least the control of ignition of primers.
- the electric ignition of the primers is a known ancient technique. It consists in sending in an electrothermal bridge in contact with a primary composition, by a power line, a current sufficient to cause ignition of the primary composition. It has evolved recently thanks to the implementation of electronic primers that can receive orders via the power line, for example, specific boot and / or programming selection commands (delay, ignition, etc.), and / or which can transmit data through the same power line, for example primer identification data.
- the present invention proposes, for its part, the use of an active solution which is implemented in relation to the electrothermal bridge and which consists of putting in parallel with the bridge an electric shunt, preferably bidirectional, controllable, monostable or bistable.
- an electric shunt preferably bidirectional, controllable, monostable or bistable.
- the commands make it possible to put the shunt in a stable closed state (preventing the operation of the bridge and therefore the ignition, the shunt then has a low electrical resistance especially with respect to the resistance of the bridge) or in a stable open state (the shunt then has a high electrical resistance especially with respect to that of the bridge and therefore derives a negligible current).
- the commands make it possible to put the shunt in a state in which it can switch from the open state to the closed state, said state being said state of flip-flop, the tilting being a function of a tipping threshold electrical bridge signal, the switching to the closed state being obtained when the electrical signal applied to the bridge exceeds the threshold, or in a forced open state.
- the monostable shunt which has passed in the closed state returns to the open state when the electric signal returns below a threshold
- the monostable shunt remains in the closed state after the tipping, it is understood that then it is necessary to implement a specific command to make it switch back to the open flip-flop state (from where it can switch to the closed state if the threshold is once again crossed upwards) where to send an open state override command.
- the shunt which is in parallel with the bridge substantially bypasses the bridge which can not then operate and cause the ignition (can not warm enough enough for lack of sufficient current circulating within it).
- the monostable shunt is dimensioned so that its tipping threshold is lower than the Ramorce x Io primer pair, Ramorce being the resistance of the primer and Io initiates the maximum intensity of non-ignition of the primer, the shunt being conductive over of this threshold and non-driver below this threshold, which makes any inadvertent boot impossible.
- the monostable shunt behaves as a controllable clipper whose closed state causes the bridge to see only one voltage, depending on the type of shunt, between zero volts (perfect short circuit) and maximum Ramorce x Io primer volts ( true limiter).
- the shunt in the closed state is configured so that the bridge sees only one voltage, depending on the type of shunt, between zero volts (perfect short circuit) and maximum Ramorce x Io primer volts (true limiter).
- the invention thus relates to a pyroelectronic primer comprising an electronic circuit for at least ignition control of the primer by sending a current in an electrothermal bridge.
- the primer further comprises at least one electrical shunt means disposed in parallel with the bridge, the shunt means being controllable by commands enabling a selection of states, the states being a closed state with low electrical resistance. the shunt for preventing the ignition of the primer by bypassing through the shunt of the bridge current and an open state with high electrical resistance of the shunt (and thus allowing ignition that will be obtained when a current will be sent in the bridge following an ignition command coupled or not to a state command).
- the shunt is bistable, the commands making it possible to put the shunt in a stable closed state, or in a stable open state,
- the shunt is monostable, the commands enabling the shunt to be in a toggled state at least from the open state to the closed state, the tilting being a function of an electrical bridge signal tilting threshold, the tilting to the closed state being obtained when the electrical signal applied to the bridge exceeds the threshold, or in a forced open state,
- said shunt switches back to the open state when the electrical signal reverts below a threshold
- the monostable shunt which returns to the open state when the electrical signal goes back below the threshold, has a hysteresis, the threshold of switching from the open state to the closed state being greater than the switching threshold of the closed state to the open state,
- the monostable shunt which returns to the open state when the electrical signal goes back below the threshold is delayed, the reverting to the open state taking place after a determined delay once the signal has gone back below the threshold,
- the monostable shunt which returns to the open state when the electric signal goes back below the threshold is delayed, the reverting to the open state taking place after a determined delay once the signal is ironed and remains below the threshold, (the signal must remain below the threshold for a certain amount of time to be reinstated),
- the threshold is a voltage threshold chosen to be lower than the product Ramorce x Io primer, Ramorce being the resistance of the primer and Io initiates the maximum intensity of non-ignition of the primer, - the resistance in the closed state the shunt is less than the resistance of the bridge divided by 10,
- the bridge electrical signal is the voltage across the bridge
- the bridge electrical signal is the voltage across a capacitor intended to be discharged through the bridge during ignition
- the shunt is bidirectional, (in addition to a current of constant polarity -current current of any shape- the bidirectional shunt passes a possible alternating current) (the electrical conduction characteristics in the closed state may be different depending on the -polarity-direction of the shunted current as for example in the case of a shunt constituted by an NPN transistor and a diode in parallel, cathode on the collector and anode on the emitter: in a conduction threshold direction of the diode, in the other saturation voltage of the transistor turned on)
- the shunt is a component chosen from at least one (ie one or more or a combination of these components, for example a transistor and a thyristor or triac) or several of the following components: an electromagnetic relay,
- MEMS electric micromechanical switch
- the shunt is in a state which corresponds to an impossibility of ignition, (concerns both a primer not connected to a line of ignition, unpowered, a primer connected to a line d ignition traversed by a communication and / or supply current for a code-controlled primer, apart from a disinhibition or activation code, these terms being equivalent)
- the initiator further comprises means for measuring the current flowing in the shunt and the changeover or switchover to the open state is only possible if the current measurement is less than a predetermined current threshold,
- the states of the shunt are under the control of commands (codes) sent on an ignition line connected to the electronic circuit of the primer,
- control voltage of the opening of the shunt is greater than the minimum operating voltage of the logic of the electronic module
- the primer comprises means making it possible for the transition to a state corresponding to an ignition possibility to be dependent on a disinhibition command sent to the primer,
- the primer comprises means for the passage in a state that corresponds to an ignition failure is dependent on an inhibition command sent into the primer. Thanks to the implementation of a shunt, in addition to increased safety, it is possible to perform tests on the primer to cause an electric shock (simulation of a parasitic current or ignition control but with inhibition of stable shunt ignition or in a flip-flop state) in the final circuit of the bridge but without causing the actual ignition of the primer because the discharge is essentially derived through the shunt. We can therefore perform more extensive tests than previously possible.
- FIG. 1 which represents a block diagram of a primer according to the invention.
- the primer 1 comprises an electronic module 2 connected at 3 to an ignition line and in which, depending on the degree of complexity of the module 2, an ignition current or commands (various codes or instructions of which ignition) are received by the module and, optionally, data that can be sent from the module to the outside.
- the module comprises an electronic control circuit.
- a thermoelectric bridge 4 is connected to two power supply lines via an ignition control element, trtir, which is a transistor 5, preferably MOS as in FIG. 1.
- a storage capacitor Ctir is disposed between the two power supply lines and is intended to store energy, especially for ignition.
- a shunt 7 is arranged in parallel with the bridge 4. The open or closed states of the shunt can be controlled by the electronic circuit via line 8.
- the electronic circuit via a line 6, can control the ignition of the primer by making passing transistor 5 (and provided that shunt 7 is in a stable or forced open state).
- shunt 7 is in a stable or forced open state.
- the commands make it possible to move the shunt from a stable open state to a stable closed state and vice versa.
- the commands make it possible to pass the shunt of a state of rocking in which the shunt can pass from at least one open state to a closed state according to the value of a bridge electrical signal measured across the bridge or across the capacitance Ctir, with respect to a threshold, or to move it to a forced open state and vice versa.
- the shunt can switch back to the open state automatically or not depending on the electrical signal according to the variant implemented.
- the shunt being a simple switch or switch.
- an electronic shunt is implemented which is or comprises a bipolar transistor or field effect, including MOS for the latter.
- the shunt comprises means for signal measurement and own tilt control.
- thermoelectric bridge 7 which is in parallel with the thermoelectric bridge 4 and the switching from closed state (thus inhibited primer) to the open state (uninhibited primer, then allowing a possible ignition) if the current measurement is less than a threshold.
- the switching circuit may be in series with the bridge and the shunt which are in parallel. In both cases, the switching circuit is preferably separate from the ignition control element.
- this variant has the disadvantage of adding a switching circuit that may have some internal resistance even closed, this series of the bridge, which can reduce the energy supplied to the bridge.
- the primer is initially (in the absence command to the contrary) in a state of ignition inhibition, ie the shunt is in a stable closed state (case of the bistable shunt) or a flip-flop state (case of the monostable shunt) thus preventing any inadvertent ignition.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Air Bags (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
- Electronic Switches (AREA)
- Non-Adjustable Resistors (AREA)
- Details Of Resistors (AREA)
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
- Electrophonic Musical Instruments (AREA)
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT05848358T ATE447697T1 (de) | 2004-12-23 | 2005-12-23 | Mit einer schaltung zum nebenschlussschalten einer elektrothermischen brücke versehener pyroelektronischer zünder |
EP05848358A EP1831636B1 (fr) | 2004-12-23 | 2005-12-23 | Amorce pyro-electronique a circuit de shuntage de pont electrothermique |
PL05848358T PL1831636T3 (pl) | 2004-12-23 | 2005-12-23 | Spłonka piroelektroniczna z układem bocznikowania mostka elektrotermicznego |
AU2005321067A AU2005321067B2 (en) | 2004-12-23 | 2005-12-23 | Pyroelectronic detonator provided with a circuit for shunting an electrothermal bridge |
DE602005017516T DE602005017516D1 (de) | 2004-12-23 | 2005-12-23 | Elektrothermischen brücke versehener pyroelektronischer zünder |
BRPI0519203A BRPI0519203B1 (pt) | 2004-12-23 | 2005-12-23 | detonador piro-eletrônico |
US11/722,542 US8327764B2 (en) | 2004-12-23 | 2005-12-23 | Pyroelectronic detonator provided with a circuit for shunting an electrothermal bridge |
CA2592460A CA2592460C (fr) | 2004-12-23 | 2005-12-23 | Amorce pyro-electronique a circuit de shuntage de pont electrothermique |
NO20073779A NO339395B1 (no) | 2004-12-23 | 2007-07-19 | Pyroelektronisk detonator utstyrt med en krets for shunting av en elektrotermisk bro |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0453204A FR2880110B1 (fr) | 2004-12-23 | 2004-12-23 | Amorce pyro-electronique a circuit de shuntage de pont electrothermique |
FR0453204 | 2004-12-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006070170A1 true WO2006070170A1 (fr) | 2006-07-06 |
Family
ID=34954998
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2005/051145 WO2006070170A1 (fr) | 2004-12-23 | 2005-12-23 | Amorce pyro-electronique a circuit de shuntage de pont electrothermique |
Country Status (12)
Country | Link |
---|---|
US (1) | US8327764B2 (fr) |
EP (1) | EP1831636B1 (fr) |
AT (1) | ATE447697T1 (fr) |
AU (1) | AU2005321067B2 (fr) |
BR (1) | BRPI0519203B1 (fr) |
CA (1) | CA2592460C (fr) |
DE (1) | DE602005017516D1 (fr) |
ES (1) | ES2338246T3 (fr) |
FR (1) | FR2880110B1 (fr) |
NO (1) | NO339395B1 (fr) |
PL (1) | PL1831636T3 (fr) |
WO (1) | WO2006070170A1 (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8695505B2 (en) * | 2009-10-05 | 2014-04-15 | Detnet South Africa (Pty) Ltd. | Detonator |
EP2461342B1 (fr) * | 2010-12-06 | 2015-01-28 | Siemens Aktiengesellschaft | Module de commutation protégé contre les erreurs |
CN104266553B (zh) * | 2014-07-24 | 2016-01-13 | 娄文忠 | 一种电火工品组件 |
FR3033402B1 (fr) * | 2015-03-04 | 2017-04-07 | Davey Bickford | Systeme de commande d'au moins un detonateur electronique |
WO2018031244A1 (fr) | 2016-08-11 | 2018-02-15 | Austin Star Detonator Company | Détonateur électronique amélioré, module d'allumage électronique (eim) et circuit de mise à feu pour une meilleure sécurité de sautage |
US10277268B2 (en) * | 2017-06-02 | 2019-04-30 | Psemi Corporation | Method and apparatus for switching of shunt and through switches of a transceiver |
US11719518B2 (en) | 2020-06-02 | 2023-08-08 | Halliburton Energy Services, Inc. | Detonator having a mechanical shunt |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB313605A (en) * | 1928-06-15 | 1930-11-10 | Lignoza Spoka Akcyjna | Method of protecting electric blasting fuses against the action of stray currents |
US3683811A (en) * | 1970-06-22 | 1972-08-15 | Hercules Inc | Electric initiators for high energy firing currents |
US4103619A (en) * | 1976-11-08 | 1978-08-01 | Nasa | Electroexplosive device |
US5460093A (en) * | 1993-08-02 | 1995-10-24 | Thiokol Corporation | Programmable electronic time delay initiator |
US6220163B1 (en) * | 1998-10-06 | 2001-04-24 | Livbag Snc | Electro-pyrotechnic initiation system protected against electrostatic discharges |
WO2004010554A2 (fr) * | 2002-07-24 | 2004-01-29 | Ensign-Bickford Aerospace & Defense Company | Caleur commande par temporisateur pour elements initiateurs |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2918001A (en) * | 1957-09-30 | 1959-12-22 | William W Garber | Radio-proof electric firing device |
US3343491A (en) * | 1963-08-13 | 1967-09-26 | Jr Carl I Peters | Protective circuit for electrofiring devices |
US3640224A (en) * | 1969-09-12 | 1972-02-08 | Us Navy | Rf immune firing circuit employing high-impedance leads |
CA1046342A (fr) * | 1975-08-18 | 1979-01-16 | John M. Power | Dispositif explosif detone a l'electricite |
ZA771838B (en) * | 1976-03-30 | 1978-03-29 | Tri Electronics Ab | An electric detonator cap |
EP0013835B1 (fr) * | 1979-01-15 | 1983-05-25 | Imperial Chemical Industries Plc | Circuit de commande pour détonateur électrique à déclenchement sélectif et détonateurs comportant un tel circuit |
US4967665A (en) * | 1989-07-24 | 1990-11-06 | The United States Of America As Represented By The Secretary Of The Navy | RF and DC desensitized electroexplosive device |
US5036768A (en) * | 1990-02-13 | 1991-08-06 | Dow Robert L | Attenuator for dissipating electromagnetic and electrostatic energy |
US5099762A (en) * | 1990-12-05 | 1992-03-31 | Special Devices, Incorporated | Electrostatic discharge immune electric initiator |
USH1476H (en) * | 1991-09-26 | 1995-09-05 | The United States Of America As Represented By The Secretary Of The Army | Circuitry for igniting detonators |
FR2749073B1 (fr) * | 1996-05-24 | 1998-08-14 | Davey Bickford | Procede de commande de detonateurs du type a module d'allumage electronique, ensemble code de commande de tir et module d'allumage pour sa mise en oeuvre |
US6739264B1 (en) * | 2002-11-04 | 2004-05-25 | Key Safety Systems, Inc. | Low cost ignition device for gas generators |
-
2004
- 2004-12-23 FR FR0453204A patent/FR2880110B1/fr active Active
-
2005
- 2005-12-23 PL PL05848358T patent/PL1831636T3/pl unknown
- 2005-12-23 AT AT05848358T patent/ATE447697T1/de not_active IP Right Cessation
- 2005-12-23 BR BRPI0519203A patent/BRPI0519203B1/pt active IP Right Grant
- 2005-12-23 US US11/722,542 patent/US8327764B2/en active Active
- 2005-12-23 AU AU2005321067A patent/AU2005321067B2/en active Active
- 2005-12-23 CA CA2592460A patent/CA2592460C/fr active Active
- 2005-12-23 DE DE602005017516T patent/DE602005017516D1/de active Active
- 2005-12-23 ES ES05848358T patent/ES2338246T3/es active Active
- 2005-12-23 EP EP05848358A patent/EP1831636B1/fr active Active
- 2005-12-23 WO PCT/FR2005/051145 patent/WO2006070170A1/fr active Application Filing
-
2007
- 2007-07-19 NO NO20073779A patent/NO339395B1/no not_active IP Right Cessation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB313605A (en) * | 1928-06-15 | 1930-11-10 | Lignoza Spoka Akcyjna | Method of protecting electric blasting fuses against the action of stray currents |
US3683811A (en) * | 1970-06-22 | 1972-08-15 | Hercules Inc | Electric initiators for high energy firing currents |
US4103619A (en) * | 1976-11-08 | 1978-08-01 | Nasa | Electroexplosive device |
US5460093A (en) * | 1993-08-02 | 1995-10-24 | Thiokol Corporation | Programmable electronic time delay initiator |
US6220163B1 (en) * | 1998-10-06 | 2001-04-24 | Livbag Snc | Electro-pyrotechnic initiation system protected against electrostatic discharges |
WO2004010554A2 (fr) * | 2002-07-24 | 2004-01-29 | Ensign-Bickford Aerospace & Defense Company | Caleur commande par temporisateur pour elements initiateurs |
Also Published As
Publication number | Publication date |
---|---|
US8327764B2 (en) | 2012-12-11 |
US20100000435A1 (en) | 2010-01-07 |
BRPI0519203A2 (pt) | 2008-12-30 |
CA2592460C (fr) | 2012-11-27 |
NO339395B1 (no) | 2016-12-12 |
BRPI0519203B1 (pt) | 2019-01-08 |
EP1831636A1 (fr) | 2007-09-12 |
FR2880110A1 (fr) | 2006-06-30 |
EP1831636B1 (fr) | 2009-11-04 |
ES2338246T3 (es) | 2010-05-05 |
AU2005321067B2 (en) | 2011-09-22 |
CA2592460A1 (fr) | 2006-07-06 |
DE602005017516D1 (de) | 2009-12-17 |
FR2880110B1 (fr) | 2007-03-30 |
NO20073779L (no) | 2007-09-21 |
PL1831636T3 (pl) | 2010-08-31 |
ATE447697T1 (de) | 2009-11-15 |
AU2005321067A1 (en) | 2006-07-06 |
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