EP0845652A2 - Sprengkette - Google Patents
Sprengkette Download PDFInfo
- 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- Withdrawn
Links
Images
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.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Air Bags (AREA)
- Electronic Switches (AREA)
- Testing Of Individual Semiconductor Devices (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
Description
Claims (4)
dadurch gekennzeichnet,
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4415388 | 1994-05-02 | ||
DE4415388A DE4415388C1 (de) | 1994-05-02 | 1994-05-02 | Sprengkette |
EP95105373A EP0681158B1 (de) | 1994-05-02 | 1995-04-10 | Sprengkette |
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 (de) | 1998-06-03 |
EP0845652A3 EP0845652A3 (de) | 2002-01-30 |
Family
ID=6517051
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97120954A Withdrawn EP0845652A3 (de) | 1994-05-02 | 1995-04-10 | Sprengkette |
EP95105373A Expired - Lifetime EP0681158B1 (de) | 1994-05-02 | 1995-04-10 | Sprengkette |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95105373A Expired - Lifetime EP0681158B1 (de) | 1994-05-02 | 1995-04-10 | Sprengkette |
Country Status (10)
Country | Link |
---|---|
US (1) | US5571985A (de) |
EP (2) | EP0845652A3 (de) |
JP (1) | JP2820383B2 (de) |
KR (1) | KR950033411A (de) |
CN (1) | CN1062954C (de) |
AU (1) | AU684909B2 (de) |
CA (1) | CA2147676A1 (de) |
DE (2) | DE4415388C1 (de) |
ES (1) | ES2123173T3 (de) |
ZA (1) | ZA946072B (de) |
Families Citing this family (18)
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 |
US6490977B1 (en) | 1998-03-30 | 2002-12-10 | Magicfire, Inc. | Precision pyrotechnic display system and method having increased safety and timing accuracy |
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 |
WO2007124517A2 (en) * | 2006-04-20 | 2007-11-01 | Detnet South Africa (Pty) Ltd | Detonator system |
US8477049B2 (en) * | 2009-06-05 | 2013-07-02 | Apple Inc. | Efficiently embedding information onto a keyboard membrane |
WO2011032189A1 (en) * | 2009-09-09 | 2011-03-17 | 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 (en) * | 2020-05-09 | 2021-11-18 | Murtaza Maimoon | An electronic system for controlled sequential detonation and method thereof |
Citations (7)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1287495B (de) * | 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 (de) * | 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 (de) * | 1987-07-09 | 1988-01-18 | ||
WO1992008932A1 (en) * | 1990-11-13 | 1992-05-29 | Schultz Richard M | Electronic control system for explosives |
DE4212375C2 (de) * | 1991-05-02 | 1994-02-03 | Euro Matsushita Electric Works | Sprengkette |
-
1994
- 1994-05-02 DE DE4415388A patent/DE4415388C1/de not_active Expired - Fee Related
- 1994-08-12 ZA ZA946072A patent/ZA946072B/xx unknown
-
1995
- 1995-04-10 EP EP97120954A patent/EP0845652A3/de not_active Withdrawn
- 1995-04-10 EP EP95105373A patent/EP0681158B1/de not_active Expired - Lifetime
- 1995-04-10 ES ES95105373T patent/ES2123173T3/es not_active Expired - Lifetime
- 1995-04-10 DE DE59503754T patent/DE59503754D1/de not_active Expired - Fee Related
- 1995-04-24 CA CA002147676A patent/CA2147676A1/en not_active Abandoned
- 1995-04-25 US US08/428,300 patent/US5571985A/en not_active Expired - Fee Related
- 1995-04-28 JP JP7105745A patent/JP2820383B2/ja not_active Expired - Lifetime
- 1995-04-28 CN CN95105176A patent/CN1062954C/zh not_active Expired - Fee Related
- 1995-05-01 AU AU17799/95A patent/AU684909B2/en not_active Ceased
- 1995-05-02 KR KR1019950010718A patent/KR950033411A/ko not_active Application Discontinuation
Patent Citations (7)
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 |
---|---|
DE59503754D1 (de) | 1998-11-05 |
KR950033411A (ko) | 1995-12-26 |
EP0845652A3 (de) | 2002-01-30 |
ES2123173T3 (es) | 1999-01-01 |
US5571985A (en) | 1996-11-05 |
DE4415388C1 (de) | 1995-04-20 |
ZA946072B (en) | 1995-04-04 |
CN1062954C (zh) | 2001-03-07 |
CA2147676A1 (en) | 1995-11-03 |
EP0681158A1 (de) | 1995-11-08 |
AU684909B2 (en) | 1998-01-08 |
AU1779995A (en) | 1995-11-09 |
EP0681158B1 (de) | 1998-09-30 |
CN1119735A (zh) | 1996-04-03 |
JPH0875400A (ja) | 1996-03-19 |
JP2820383B2 (ja) | 1998-11-05 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 19971216 |
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AC | Divisional application: reference to earlier application |
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PUAL | Search report despatched |
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AK | Designated contracting states |
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RIC1 | Information provided on ipc code assigned before grant |
Free format text: 7F 42D 1/055 A, 7H 03K 5/15 B |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20011002 |