EP0008835A1 - Circuit électrique pour l'allumage d'un détonateur - Google Patents

Circuit électrique pour l'allumage d'un détonateur Download PDF

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Publication number
EP0008835A1
EP0008835A1 EP79200482A EP79200482A EP0008835A1 EP 0008835 A1 EP0008835 A1 EP 0008835A1 EP 79200482 A EP79200482 A EP 79200482A EP 79200482 A EP79200482 A EP 79200482A EP 0008835 A1 EP0008835 A1 EP 0008835A1
Authority
EP
European Patent Office
Prior art keywords
capacitor
capacitors
voltage
electrical circuit
contactor
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Withdrawn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
EP79200482A
Other languages
German (de)
English (en)
French (fr)
Inventor
Robert Geo Orlandi
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.)
SA PRB SA
Original Assignee
SA PRB SA
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 SA PRB SA filed Critical SA PRB SA
Publication of EP0008835A1 publication Critical patent/EP0008835A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C11/00—Electric fuzes
    • F42C11/06—Electric fuzes with time delay by electric circuitry

Definitions

  • the invention relates to an electrical circuit for igniting a projectile detonator, comprising a generator for charging first and second capacitors connected in series, said first capacitor being connected in series with a contactor, a primer and a semi element. -conductor with controlled conductivity, and means for stabilizing the voltage of one of said capacitors and for preventing ignition of the primer for a predetermined time.
  • Such an electrical circuit is of the type disclosed in DOS No. 1,948,382.
  • said means stabilize the voltage on the first capacitor using a Zener diode and prevent ignition of the primer for a predetermined time after the contactor closes.
  • the purpose of the present application is to provide an electrical circuit of the aforementioned type but in which said means do not use a Zener diode and prevent the ignition of the primer for a predetermined time after charging the capacitors.
  • said means comprise a first voltage divider connected in parallel with the series connection of said first and second capacitors and of said contactor, the control electrode of said semi-element conductor being connected to the intermediate point of said first voltage booster comprising a transistor whose base is connected to the intermediate point of a second voltage divider connected in parallel with said second capacitor which has a value several times greater than that of the first capacitor.
  • said means not only stabilize the voltage of the second capacitor without using a Zener diode and prevent ignition of the primer for a predetermined time after charging the capacitors.
  • the circuit comprises a generator formed by a winding L arranged around a magnetic core, part 1 of which is made of soft iron and part 2 is constituted by a permanent magnet.
  • the latter is intended to be separated from part 1 at the start of the stroke. This displacement is generally obtained simply by inertia effect and the remoteness of the permanent magnet 2 causes an abrupt variation of the magnetic flux in the winding L, which induces an electric voltage used to charge two capacitors C 1 and C 2 connected in series.
  • a diode D prevents after having been charged, the capacitors do not redischarge in the winding L.
  • a switch 3 short-circuits, before the start of the blow, the two capacitors to avoid any potential difference due for example to fields electrical interference.
  • the capacitor C 1 supplies in series a contactor 4 for controlling the ignition, a primer 5 and an electronic switch 6.
  • the capacitor C 2 is connected to a device 7 for stabilizing its voltage and to a timing device 8.
  • the latter acts on a circuit 9 working in a similar fashion to an AND gate and supplying the command to close the switch. electronic 6.
  • the capacitor C 1 When the shot starts, the two capacitors C 1 and C 2 are charged, the capacitor C 1 being intended to supply the energy necessary for the ignition of the primer 5.
  • the capacitor C 2 supplies the timer device 8 which prevents , via the circuit 9, that a signal can close the switch 6 for a certain period after charging the capacitors. This duration can be of the order of 100 ms for example and makes it possible to obtain security of mouth.
  • the time delay obtained by the circuit 8 is constant, thanks to the voltage stabilizer 7 which makes it possible to obtain a charging voltage of the capacitor C 2 independent of the voltage supplied by the generator. Indeed, the latter can vary significantly depending on the initial acceleration of the projectile and, therefore, the speed of movement of the permanent magnet 2. If the ignition switch 4 was accidentally closed before the end from the safety of the mouth, the capacitor CI would be connected to a resistor R 1 and would therefore be discharged, which would prevent any subsequent ignition.
  • Figure 2 illustrates a particularly advantageous embodiment of the circuit according to Figure 1.
  • the electronic switch consists of a thyristor T 1 , the control electrode of which is connected by a resistor R 3 to a voltage divider formed by a resistor R 2 and a transistor T 2 .
  • This voltage divider is connected across the two capacitors C 1 and C 2 in series.
  • the base of transistor T 2 is controlled by a signal obtained by a second voltage divider, consisting of two resistors R 4 and R 5 connected to the terminals of capacitor C 2 .
  • Mouth safety is given by the discharge of the capacitor C 2 in the resistor R 4 and the transistor T 2 until the base voltage of the latter becomes too low to maintain it in the conductive state. From this moment, the thyristor control electrode T 1 can receive the positive potential of the capacitor C l which is transmitted by the resistor R 2 .
  • the circuit described makes it possible to obtain stabilization of the voltage of the capacitor C 2 inexpensively, by virtue of the Zener effect which is observed between the cathode and the control electrode of a thyristor.
  • a flow of current is observed, which gives a discharge current of the capacitor C 2 through the circuit formed by the cathode of T 1 , its control electrode, the resistor R 3 and the transistor T 2 .
  • the maximum voltage of C 2 is limited, so that its discharge time until T 2 becomes non-conductive is constant.
  • control voltage of the transistor T 2 is much lower than that necessary for the operation of the primer 5, so that one can advantageously give to the capacitor C 2 a capacity several times greater than that of the capacitor C 1 .

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Air Bags (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Organic Insulating Materials (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Generation Of Surge Voltage And Current (AREA)
  • Control Of Eletrric Generators (AREA)
EP79200482A 1978-09-05 1979-09-03 Circuit électrique pour l'allumage d'un détonateur Withdrawn EP0008835A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH932978A CH628423A5 (fr) 1978-09-05 1978-09-05 Circuit electrique pour l'allumage d'un detonateur.
CH9329/78 1978-09-05

Publications (1)

Publication Number Publication Date
EP0008835A1 true EP0008835A1 (fr) 1980-03-19

Family

ID=4350816

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79200482A Withdrawn EP0008835A1 (fr) 1978-09-05 1979-09-03 Circuit électrique pour l'allumage d'un détonateur

Country Status (21)

Country Link
US (1) US4296688A (fi)
EP (1) EP0008835A1 (fi)
AT (1) AT367544B (fi)
BE (1) BE83T1 (fi)
BR (1) BR7905707A (fi)
CA (1) CA1118833A (fi)
CH (1) CH628423A5 (fi)
DE (1) DE2953090C2 (fi)
EG (1) EG13713A (fi)
ES (1) ES483864A1 (fi)
FI (1) FI67954C (fi)
FR (1) FR2458045A1 (fi)
GB (1) GB2049892B (fi)
IL (1) IL58161A (fi)
IT (1) IT1148236B (fi)
NL (1) NL172592C (fi)
NO (1) NO151065C (fi)
PT (1) PT70144A (fi)
SE (1) SE443653B (fi)
YU (1) YU211379A (fi)
ZA (1) ZA794686B (fi)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0075968A1 (de) * 1981-09-24 1983-04-06 Werkzeugmaschinenfabrik Oerlikon-Bührle AG Steuerschaltung zum Zünden einer niederohmigen Zündpille
EP0093804A1 (fr) * 1982-05-12 1983-11-16 "s.a. PRB", Société anonyme Circuit électronique perfectionné pour l'allumage d'un détonateur
DE3336534A1 (de) * 1983-10-07 1985-04-25 Diehl GmbH & Co, 8500 Nürnberg Elektronische zuendsteuerschaltung
US4882993A (en) * 1988-08-05 1989-11-28 The United States Of America As Represented By The Secretary Of The Army Electronic back-up safety mechanism for hand-emplaced land mines
US5031537A (en) * 1988-11-18 1991-07-16 Kidde-Graviner Limited Electrical timing arrangements and methods
WO2009132573A1 (zh) * 2008-04-28 2009-11-05 北京铱钵隆芯科技有限责任公司 电子雷管控制芯片
CN101464674B (zh) * 2008-09-24 2011-06-15 北京铱钵隆芯科技有限责任公司 可编程电子雷管控制芯片及其控制流程
CN101338996B (zh) * 2008-06-04 2013-01-23 北京铱钵隆芯科技有限责任公司 电子雷管控制芯片及其连接可靠性检测方法
CN110645850A (zh) * 2019-11-05 2020-01-03 湖北三江航天红林探控有限公司 基于rc延时的起爆控制系统及控制方法

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4395950A (en) * 1980-05-05 1983-08-02 Atlas Powder Company Electronic delay blasting circuit
GB8622806D0 (en) * 1986-09-23 1987-02-04 Royal Ordnance Plc Detonation fuzes
US4934268A (en) * 1989-01-26 1990-06-19 The United States Of America As Represented By The Secretary Of The Army Warhead initiation circuit
US5167308A (en) * 1991-01-17 1992-12-01 Grand Haven Stamped Products, Div. Of Jsj Corporation Combination brake/park lockout and steering mechanism and system
US5173569A (en) * 1991-07-09 1992-12-22 The Ensign-Bickford Company Digital delay detonator
US5440991A (en) * 1993-12-29 1995-08-15 Universal Propulsion Company, Inc. Miniature self contained firing system
US6389975B1 (en) 2000-04-24 2002-05-21 The United States Of America As Represented By The Secretary Of The Navy Transistorized high-voltage circuit suitable for initiating a detonator
US8582275B2 (en) * 2008-04-28 2013-11-12 Beijing Ebtech Technology Co., Ltd. Electronic detonator control chip
CN101338995B (zh) * 2008-06-04 2013-05-29 北京铱钵隆芯科技有限责任公司 电子雷管控制芯片及其连接可靠性检测方法
AP2014007641A0 (en) * 2012-02-29 2014-05-31 Detnet South Africa Pty Ltd Electronic detonator

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3088409A (en) * 1960-11-28 1963-05-07 Irvin S Yavelberg Electronic timer
DE1948382A1 (de) * 1969-09-25 1971-04-01 Licentia Gmbh Anordnung zum Erzeugen eines elektrischen Impulses
DE1948381A1 (de) * 1969-09-25 1971-04-08 Licentia Gmbh Zuender mit elektrisch zuendbarer Zuendpille
US3604356A (en) * 1969-03-06 1971-09-14 Us Navy Variable time ordnance fuze circuit
DE2314273A1 (de) * 1973-03-22 1974-10-03 Diehl Fa Zuendschaltung fuer ein geschoss

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3045148A (en) * 1962-07-17 Ignition system with transistor control
BE633460A (fi) * 1962-06-15
DE2151245A1 (de) * 1971-10-14 1976-01-02 Junghans Gmbh Geb Elektrischer zuender fuer geschosse
DE2152427A1 (de) * 1971-10-21 1977-02-03 Licentia Gmbh Aufschlagzuender mit flugzeitabhaengiger verzoegerung
FR2274018A1 (fr) * 1974-06-05 1976-01-02 France Etat Dispositif electronique de temporisation reglable pour engins
DE2653452C3 (de) * 1976-11-25 1983-11-17 Diehl GmbH & Co, 8500 Nürnberg Elektronische Zündschaltung
DE2738768C2 (de) * 1977-08-27 1982-08-19 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Aufschlagzünder

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3088409A (en) * 1960-11-28 1963-05-07 Irvin S Yavelberg Electronic timer
US3604356A (en) * 1969-03-06 1971-09-14 Us Navy Variable time ordnance fuze circuit
DE1948382A1 (de) * 1969-09-25 1971-04-01 Licentia Gmbh Anordnung zum Erzeugen eines elektrischen Impulses
DE1948381A1 (de) * 1969-09-25 1971-04-08 Licentia Gmbh Zuender mit elektrisch zuendbarer Zuendpille
DE2314273A1 (de) * 1973-03-22 1974-10-03 Diehl Fa Zuendschaltung fuer ein geschoss

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0075968A1 (de) * 1981-09-24 1983-04-06 Werkzeugmaschinenfabrik Oerlikon-Bührle AG Steuerschaltung zum Zünden einer niederohmigen Zündpille
US4493259A (en) * 1981-09-24 1985-01-15 Werkzeugmaschinenfabrik Oerlikon-Buhrle Ag Control circuit for igniting a low-ohm ignition capsule
EP0093804A1 (fr) * 1982-05-12 1983-11-16 "s.a. PRB", Société anonyme Circuit électronique perfectionné pour l'allumage d'un détonateur
DE3336534A1 (de) * 1983-10-07 1985-04-25 Diehl GmbH & Co, 8500 Nürnberg Elektronische zuendsteuerschaltung
US4632032A (en) * 1983-10-07 1986-12-30 Diehl Gmbh & Co Electronic ignition control circuit
US4882993A (en) * 1988-08-05 1989-11-28 The United States Of America As Represented By The Secretary Of The Army Electronic back-up safety mechanism for hand-emplaced land mines
US5031537A (en) * 1988-11-18 1991-07-16 Kidde-Graviner Limited Electrical timing arrangements and methods
WO2009132573A1 (zh) * 2008-04-28 2009-11-05 北京铱钵隆芯科技有限责任公司 电子雷管控制芯片
CN101338996B (zh) * 2008-06-04 2013-01-23 北京铱钵隆芯科技有限责任公司 电子雷管控制芯片及其连接可靠性检测方法
CN101464674B (zh) * 2008-09-24 2011-06-15 北京铱钵隆芯科技有限责任公司 可编程电子雷管控制芯片及其控制流程
CN110645850A (zh) * 2019-11-05 2020-01-03 湖北三江航天红林探控有限公司 基于rc延时的起爆控制系统及控制方法
CN110645850B (zh) * 2019-11-05 2021-01-26 湖北三江航天红林探控有限公司 基于rc延时的起爆控制系统及控制方法

Also Published As

Publication number Publication date
ATA990879A (de) 1981-11-15
IT1148236B (it) 1986-11-26
NO151065B (no) 1984-10-22
GB2049892A (en) 1980-12-31
EG13713A (en) 1982-03-31
FR2458045B1 (fi) 1982-11-12
NL7915052A (nl) 1980-11-28
CA1118833A (fr) 1982-02-23
IT8086285A0 (it) 1980-10-31
NL172592B (nl) 1983-04-18
SE8008441L (sv) 1980-12-02
FR2458045A1 (fr) 1980-12-26
GB2049892B (en) 1983-05-18
ES483864A1 (es) 1980-04-01
FI67954B (fi) 1985-02-28
DE2953090C2 (de) 1984-06-28
NL172592C (nl) 1983-09-16
FI792726A (fi) 1980-03-06
YU211379A (en) 1983-02-28
DE2953090A1 (de) 1981-02-19
AT367544B (de) 1982-07-12
CH628423A5 (fr) 1982-02-26
US4296688A (en) 1981-10-27
BR7905707A (pt) 1980-05-27
PT70144A (fr) 1979-10-01
SE443653B (sv) 1986-03-03
IL58161A (en) 1982-02-28
FI67954C (fi) 1985-06-10
BE83T1 (fr) 1980-09-12
NO792856L (no) 1980-03-06
ZA794686B (en) 1980-08-27
NO151065C (no) 1985-01-30

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Legal Events

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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

AK Designated contracting states

Designated state(s): AT BE DE FR GB IT NL SE

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

110E Request filed for conversion into a national patent application [according to art. 135 epc]
18D Application deemed to be withdrawn
RIN1 Information on inventor provided before grant (corrected)

Inventor name: ORLANDI, ROBERT GEO