EP0845652A2 - Chaíne pyrotechnique - Google Patents

Chaíne pyrotechnique Download PDF

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Publication number
EP0845652A2
EP0845652A2 EP97120954A EP97120954A EP0845652A2 EP 0845652 A2 EP0845652 A2 EP 0845652A2 EP 97120954 A EP97120954 A EP 97120954A EP 97120954 A EP97120954 A EP 97120954A EP 0845652 A2 EP0845652 A2 EP 0845652A2
Authority
EP
European Patent Office
Prior art keywords
ignition
stage
explosive
thyristor
semiconductor switch
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Withdrawn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
EP97120954A
Other languages
German (de)
English (en)
Other versions
EP0845652A3 (fr
Inventor
Heinz Dipl.-Phys. Ritter
Wolf Dipl.-Ing. Steinbichler
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.)
Panasonic Electric Works Europe AG
Original Assignee
Euro Matsushita Electric Works AG
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 Euro Matsushita Electric Works AG filed Critical Euro Matsushita Electric Works AG
Publication of EP0845652A2 publication Critical patent/EP0845652A2/fr
Publication of EP0845652A3 publication Critical patent/EP0845652A3/fr
Withdrawn legal-status Critical Current

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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
    • F42D1/055—Electric circuits for blasting specially adapted for firing multiple charges with a time delay
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D3/00—Particular applications of blasting techniques
    • F42D3/04—Particular applications of blasting techniques for rock blasting

Definitions

  • the invention relates to an explosive chain with a variety from the ignition stages to be controlled, each of which Explosives are assigned.
  • Such explosive chains are used in particular in mining, with the mine for example a hundred or more holes drilled in each used an explosive device with an associated detonator and the drill holes are closed with plugs.
  • the interval between successive firings is typically between 30 and 50 ms.
  • each ignition level one detonator and one in series with it contains lying thyristor switch, its control electrode with the tap of the detonator of the previous one Stage containing voltage divider is connected.
  • the previous igniter activated its resistance changes from an initially low value to practically infinite, whereby the thyristor switch of the following stage turns on and the next current pulse with him in series trigger detonator.
  • each ignition level except the actual igniter has one Oscillator, a frequency divider and two driver stages contains.
  • the one coming from the previous ignition level Trigger pulse actuates the first driver stage, which in turn a switch for driving the oscillator, the Frequency divider and the second driver stage closes.
  • the first driver stage which in turn a switch for driving the oscillator, the Frequency divider and the second driver stage closes.
  • the second Driver stage operated another switch, via which the Igniter is activated.
  • Each ignition stage also contains one Capacitor for storing all the necessary for ignition Energy.
  • DE-B-1 287 495 is an explosive chain with each known in the first part of claim 1 features known in which the transmission of the control signal from an ignition stage to the next only by changing the switching state of the semiconductor switch provided in each stage becomes.
  • This explosive chain therefore remains functional even if individual detonators are missing or not working properly become high impedance. Since each semiconductor switch is only conductive and activate the ignition device assigned to it can if the semiconductor switch of the previous Has switched stage, the intended firing order is inevitable adhered to. Faulty assembly of the explosive chain cannot cause when turning on the power source the explosive chain at about two different places at the same time starts to ignite.
  • This circuit also needs its own, the first ignition stage upstream switching element for initiation the chain so that it is - at least on the side of the first Ignition level - do not lengthen or shorten as you like leaves.
  • An object of the invention is an explosive chain specify which has the advantage of the known circuit, that it works properly even when working on individuals Make an igniter not provided or faulty is, but does not need its own initial circuit element.
  • the individual ignition stages S1 , S2 ,... Lie parallel to one another and in each case between two supply lines A and 0 , which are connected at the right end in the drawing to a DC power source (not shown).
  • the DC power source produces an output voltage of 50 V on line A compared to the earthed line 0 .
  • Each of the identical ignition stages S1 , S2 , ... contains a series circuit between a supply line A , 0 , consisting of a thyristor T and an ignition device ZE , which has two detonators Z1 , Z2 connected in series. Each detonator Z1 , Z2 is used to trigger an explosive charge (not shown). In the circuits described here, detonators with a built-in delay of 0.5 to 1.5 s are used.
  • the control electrode of the thyristor T is connected via a Zener diode ZD (Zener voltage: 35 V) at the connection point P between a resistor R1 (2.2 K ⁇ ), which has its other end connected to the supply line A , and a capacitor belonging to the preceding ignition stage S1 C (22 ⁇ F), whose other electrode is connected to supply line 0 .
  • the connection point P is also connected via a diode D to the connection point between the thyristor T and the ignition device ZE of the previous ignition stage.
  • a resistor R2 (100 ⁇ ) is connected between the control electrode and the cathode of the thyristor T.
  • Another resistor R3 lies between the connection point of the cathodes of the thyristor T and the diode D on the one hand and the ignition device ZE .
  • a fourth resistor R4 (470 ⁇ ) bridges the ignition device ZE .
  • the resistors R1 and R4 are dimensioned such that when the voltage of 50 V is applied to line A, the potential at connection point P is not sufficient to switch through thyristor T of stage S2 . Only when the thyristor T of the preceding stage S1 conducts does the point P reach a potential (50 V minus the voltage drop across the thyristor T and across the diode D ) at which the capacitor C rises to such a high level via the resistor R1 Value can charge that the ignition voltage for the thyristor T of stage S2 is reached. Taking into account the Zener voltage (35 V) of the Zener diode ZD, this value is approximately 15 V, which is sufficient for switching the thyristor T.
  • the delay with which the thyristor T of stage S2 becomes conductive after the thyristor T of stage S1 has been switched on depends on the time constant of the RC element formed by resistor R1 and capacitor C.
  • the required delay of 30 to 50 ms can be achieved by appropriate dimensioning.
  • the transmission of the trigger pulse from stage to stage with the specified delay time is independent of the ignition device ZE . This means that the circuit works properly even if one or several ignition stages has been forgotten to insert an ignition device.
EP97120954A 1994-05-02 1995-04-10 Chaíne pyrotechnique Withdrawn EP0845652A3 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4415388A DE4415388C1 (de) 1994-05-02 1994-05-02 Sprengkette
DE4415388 1994-05-02
EP95105373A EP0681158B1 (fr) 1994-05-02 1995-04-10 Chaíne pyrotechnique

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP95105373.5 Division 1995-04-10

Publications (2)

Publication Number Publication Date
EP0845652A2 true EP0845652A2 (fr) 1998-06-03
EP0845652A3 EP0845652A3 (fr) 2002-01-30

Family

ID=6517051

Family Applications (2)

Application Number Title Priority Date Filing Date
EP95105373A Expired - Lifetime EP0681158B1 (fr) 1994-05-02 1995-04-10 Chaíne pyrotechnique
EP97120954A Withdrawn EP0845652A3 (fr) 1994-05-02 1995-04-10 Chaíne pyrotechnique

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP95105373A Expired - Lifetime EP0681158B1 (fr) 1994-05-02 1995-04-10 Chaíne pyrotechnique

Country Status (10)

Country Link
US (1) US5571985A (fr)
EP (2) EP0681158B1 (fr)
JP (1) JP2820383B2 (fr)
KR (1) KR950033411A (fr)
CN (1) CN1062954C (fr)
AU (1) AU684909B2 (fr)
CA (1) CA2147676A1 (fr)
DE (2) DE4415388C1 (fr)
ES (1) ES2123173T3 (fr)
ZA (1) ZA946072B (fr)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19546781C1 (de) * 1995-12-14 1997-07-24 Euro Matsushita Electric Works Gehäuse für eine Anschlußstelle in einer Flachbandleitung
DE19546782C1 (de) * 1995-12-14 1997-07-24 Euro Matsushita Electric Works Schaltungsanordnung mit mehreren Schaltungseinheiten und gemeinsamer Mehrdrahtleitung
WO1999054676A2 (fr) * 1998-03-30 1999-10-28 Magicfire, Inc. Systeme et procede de presentation pyrotechnique de precision a securite et precision de synchronisation accrues
US20060086277A1 (en) * 1998-03-30 2006-04-27 George Bossarte Precision pyrotechnic display system and method having increased safety and timing accuracy
US6079333A (en) * 1998-06-12 2000-06-27 Trimble Navigation Limited GPS controlled blaster
FR2832501B1 (fr) * 2001-11-19 2004-06-18 Delta Caps Internat Dci Installation de tirs pyrotechniques programmables
US6941870B2 (en) * 2003-11-04 2005-09-13 Advanced Initiation Systems, Inc. Positional blasting system
US7874250B2 (en) * 2005-02-09 2011-01-25 Schlumberger Technology Corporation Nano-based devices for use in a wellbore
US8079307B2 (en) * 2005-10-05 2011-12-20 Mckinley Paul Electric match assembly with isolated lift and burst function for a pyrotechnic device
US7946227B2 (en) * 2006-04-20 2011-05-24 Detnet South Africa (Pty) Limited Detonator system
US8477049B2 (en) * 2009-06-05 2013-07-02 Apple Inc. Efficiently embedding information onto a keyboard membrane
US8646387B2 (en) * 2009-09-09 2014-02-11 Detnet South Africa (Pty) Ltd Detonator connector and detonator system
CN101900517B (zh) * 2010-05-26 2016-04-06 大连理工大学 反恐微差控爆破除障碍物方法
CN103997031A (zh) * 2014-05-16 2014-08-20 上海微小卫星工程中心 一种火工品控制电路及使用该控制电路的控制器
DE102015207187B4 (de) * 2015-04-21 2016-11-17 Siemens Aktiengesellschaft Umrichter mit Kurzschlussunterbrechung in einer Halbbrücke
DE102018109305A1 (de) * 2018-04-19 2019-10-24 Fogtec Brandschutz Gmbh & Co. Kg Brandbekämpfungseinrichtung
CN109654959A (zh) * 2018-11-13 2019-04-19 重庆长安工业(集团)有限责任公司 用于人雨火箭弹的电子安全保险电路
WO2021229597A1 (fr) * 2020-05-09 2021-11-18 Murtaza Maimoon Système électronique pour une détonation séquentielle contrôlée et procédé associé

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3603844A (en) * 1969-07-31 1971-09-07 Hercules Inc Electronic delay multiperiod initiating system
DE2150126A1 (de) * 1970-10-07 1972-07-27 B B W Telekonstruktion Ab Steuervorrichtung zum Steuern eines beweglichen Bildes auf einer Lichtzeichen-Tafel
US3687075A (en) * 1970-12-11 1972-08-29 Hercules Inc Modified presplitting technique
US3697954A (en) * 1969-11-19 1972-10-10 Svenska Dataregister Ab Matrix with inductive elements
US4314507A (en) * 1978-04-26 1982-02-09 Aeci Limited Sequential initiation of explosives
US4487125A (en) * 1982-08-05 1984-12-11 Rca Corporation Timing circuit
US5347929A (en) * 1993-09-01 1994-09-20 Schlumberger Technology Corporation Firing system for a perforating gun including an exploding foil initiator and an outer housing for conducting wireline current and EFI current

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1287495B (fr) * 1969-01-16
US3099962A (en) * 1961-06-28 1963-08-06 Chester L Smith Electric timer and sequencing system for pyrotechnic flash items
US3468255A (en) * 1968-02-19 1969-09-23 Honeywell Inc Intervalometer
US3559582A (en) * 1968-12-27 1971-02-02 Energy Conversion Devices Inc Squib control circuit
NL7208320A (fr) * 1972-06-17 1973-12-19
US3895265A (en) * 1972-10-24 1975-07-15 Gen Electric Sequencing circuit for firing photoflash lamps in predetermined order
US3808459A (en) * 1972-12-04 1974-04-30 Alkan R & Cie Electronic distributor for the sequential supplying electric-current-receiving loads
US3892182A (en) * 1973-12-10 1975-07-01 Cbf Systems Inc Squib control circuit
AU6933074A (en) * 1974-05-23 1975-11-27 African Explosives & Chem Sequential actuation of initiators
ZA757981B (en) * 1975-12-23 1977-07-27 Plessey Sa Ltd The sequential initiation of explosions
AU6636981A (en) * 1980-02-08 1981-08-13 Aeci Limited Sequential initiation of explosions
US4489655A (en) * 1983-01-06 1984-12-25 Bakke Industries Limited Sequential blasting system
AU3328084A (en) * 1983-10-05 1985-04-18 Johannesburg Construction Corp. Pty. Ltd. Electrical sequential firing system
ZA875014B (fr) * 1987-07-09 1988-01-18
WO1992008932A1 (fr) * 1990-11-13 1992-05-29 Schultz Richard M Systeme de commande electronique pour explosifs
DE4212375C2 (de) * 1991-05-02 1994-02-03 Euro Matsushita Electric Works Sprengkette

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3603844A (en) * 1969-07-31 1971-09-07 Hercules Inc Electronic delay multiperiod initiating system
US3697954A (en) * 1969-11-19 1972-10-10 Svenska Dataregister Ab Matrix with inductive elements
DE2150126A1 (de) * 1970-10-07 1972-07-27 B B W Telekonstruktion Ab Steuervorrichtung zum Steuern eines beweglichen Bildes auf einer Lichtzeichen-Tafel
US3687075A (en) * 1970-12-11 1972-08-29 Hercules Inc Modified presplitting technique
US4314507A (en) * 1978-04-26 1982-02-09 Aeci Limited Sequential initiation of explosives
US4487125A (en) * 1982-08-05 1984-12-11 Rca Corporation Timing circuit
US5347929A (en) * 1993-09-01 1994-09-20 Schlumberger Technology Corporation Firing system for a perforating gun including an exploding foil initiator and an outer housing for conducting wireline current and EFI current

Also Published As

Publication number Publication date
KR950033411A (ko) 1995-12-26
CN1119735A (zh) 1996-04-03
ZA946072B (en) 1995-04-04
AU684909B2 (en) 1998-01-08
DE59503754D1 (de) 1998-11-05
US5571985A (en) 1996-11-05
EP0681158B1 (fr) 1998-09-30
EP0845652A3 (fr) 2002-01-30
CN1062954C (zh) 2001-03-07
DE4415388C1 (de) 1995-04-20
ES2123173T3 (es) 1999-01-01
CA2147676A1 (fr) 1995-11-03
JP2820383B2 (ja) 1998-11-05
EP0681158A1 (fr) 1995-11-08
JPH0875400A (ja) 1996-03-19
AU1779995A (en) 1995-11-09

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