EP3371544A1 - Electronic detonator firing method, and electronic detonator - Google Patents
Electronic detonator firing method, and electronic detonatorInfo
- Publication number
- EP3371544A1 EP3371544A1 EP16809956.2A EP16809956A EP3371544A1 EP 3371544 A1 EP3371544 A1 EP 3371544A1 EP 16809956 A EP16809956 A EP 16809956A EP 3371544 A1 EP3371544 A1 EP 3371544A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- energy
- firing
- electronic detonator
- predetermined
- voltage
- 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.)
- Granted
Links
- 238000010304 firing Methods 0.000 title claims abstract description 149
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000004146 energy storage Methods 0.000 claims description 60
- 239000003990 capacitor Substances 0.000 claims description 54
- 238000005474 detonation Methods 0.000 claims description 7
- 238000005259 measurement Methods 0.000 description 16
- 239000004020 conductor Substances 0.000 description 6
- 230000007423 decrease Effects 0.000 description 5
- 238000012795 verification Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
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
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B3/00—Blasting cartridges, i.e. case and explosive
- F42B3/10—Initiators therefor
- F42B3/12—Bridge initiators
- F42B3/121—Initiators with incorporated integrated circuit
-
- 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 present invention relates to a method of firing an electronic detonator, and an electronic detonator implementing the firing method.
- a set of electronic detonators is connected to the same control system, the control system being configured to manage the operation of the electronic detonators, as well as to power them.
- Each electronic detonator is connected to the control system by means of electrical conductors (corresponding to the son of the detonator, the bus line and the firing line), and includes in particular an explosive or detonator charge, a primer or ignition module to electronic control, and means for memorizing a firing delay time, this delay time corresponding to the time to be counted between the reception by the electronic detonator of a command or firing order and the firing well said.
- an electronic detonator further comprises electronic circuits configured to reproduce the firing delay time, for example by performing a count corresponding to the delay time from the receipt of the command or the order of setting. traffic light.
- the electronic detonators are no longer powered by the control system. supply of each electronic detonator being ensured by onboard energy storage means in each detonator.
- the energy storage means embedded in an electronic detonator make it possible, in addition to feeding the various electronic circuits in the detonator such as circuits reproducing the delay time, storing the energy necessary for firing the electronic detonator.
- the ignition delay time is not reproduced, the firing of the electronic detonator does not occur. not being implemented.
- the electronic detonator is not fired if the energy stored in the energy storage means decreases so that the energy required for firing is not sufficient in the storage means of energy, especially once the delay time has elapsed.
- the present invention aims to provide a method of firing an electronic detonator, and an electronic detonator in which the security is improved.
- the present invention aims in a first aspect a method of firing an electronic detonator comprising energy storage means, the method comprising receiving by the electronic detonator a firing order.
- the method comprises the following steps implemented as long as a delay time associated with the electronic detonator has not elapsed from said reception of the firing order:
- the energy stored in the energy storage means is monitored so as to firing the electronic detonator if the measured stored energy is less than or equal to a predetermined energy. Therefore, the method allows an electronic detonator to be fired although the delay time associated with it has not elapsed since the receipt of the firing command.
- the predetermined energy corresponds to a minimum energy required to power and to ignite the electronic detonator.
- the firing of the electronic detonator is implemented without waiting the lapse of the delay time.
- the energy storage means contain the energy necessary to power the electronic detonator and for the actual firing.
- the electronic detonator is fired as soon as the energy stored in the energy storage means reaches the predetermined energy in order to prevent the electronic detonator from ever being fired.
- the firing process further comprises a step of comparing the measured stored energy with the predetermined energy.
- the step of measuring the stored energy comprises a step of measuring a voltage across the energy storage means
- the comparing step comprises a step of comparing the measured voltage with a predetermined voltage representative of the predetermined energy.
- the firing step of the electronic detonator is implemented before the delay time has elapsed.
- the electronic detonator is fired before the energy stored by the energy storage means is no longer sufficient. for the electronic detonator to be fired.
- the electronic detonator is fired while there is enough energy to power it and to initiate the detonator charge of the electronic detonator.
- the method when the measured stored energy is less than or equal to said predetermined energy, the method further comprises a step of determining the time difference existing between a period of time elapsed from the reception of the firing order and the delay time associated with the electronic detonator, said firing step being implemented when said time difference is less than a predetermined time value.
- the measured stored energy is less than or equal to the predetermined energy
- the step of measuring the stored energy comprises a first step of measuring the energy stored in first energy storage means and a second step of measuring the energy stored in seconds.
- energy storage means, the firing of the electronic detonator being implemented if the stored energy measured at the first measurement step is less than or equal to a first predetermined energy or if the stored energy measured at the second step of measurement is less than or equal to a second predetermined energy.
- the first predetermined energy corresponds to a minimum energy required to power the electronic detonator and the second predetermined energy corresponds to a minimum energy required to ignite the electronic detonator.
- the comparison step comprises a first step of comparing the stored energy measured at the first measurement step with the first predetermined energy and a second step of comparing the stored energy measured at the second measurement step with the second predetermined energy.
- the energy storage means of the electronic detonator thus comprise two different energy storage means, the firing of the electronic detonator being implemented when the stored energy measured in the first measurement step is less than or equal to the first predetermined energy and / or the stored energy measured at the second measurement step is less than or equal to the second predetermined energy.
- the electronic detonator is fired by anticipation.
- the present invention aims according to a second aspect an electronic detonator comprising energy storage means and means for receiving a firing order.
- the electronic detonator further comprises:
- - Firing means configured to implement the firing of the electronic detonator before a delay time associated with the electronic detonator does not flow, when the stored energy measured by the measuring means is lower or equal to a predetermined energy.
- the electronic detonator comprises means for comparing the stored energy measured by the measuring means with said predetermined energy.
- the means for measuring the energy stored in the energy storage means comprise means for measuring the voltage at the terminals of said energy storage means, and the comparison means comprise means for comparing the energy a voltage measured by the measuring means at a predetermined voltage representative of the predetermined energy.
- the energy storage means comprise first energy storage means configured to store the energy required for the supply of the electronic detonator and second energy storage means configured to store the energy. energy required for firing the electronic detonator. Thanks to the different energy storage means for storing the energy necessary for supplying the electronic detonator and for storing the energy necessary for firing the electronic detonator, it is possible to measure the voltage at the same time. terminals of each of said energy storage means and firing the detonator when one of the voltages is less than or equal to a predetermined voltage.
- the energy storage means comprise a capacitor.
- the present invention aims according to a third aspect, a detonation system comprising a set of electronic detonators according to the invention and implementing the firing method according to the invention.
- the electronic detonator and the detonation system have advantages similar to those described above with reference to the firing method according to the invention.
- FIG. 1 shows schematically a detonation system according to an embodiment comprising a plurality of electronic detonators
- FIG. 2 represents an electronic detonator according to one embodiment of the invention
- FIG. 3 illustrates a flowchart representing the method of firing an electronic detonator according to one embodiment of the invention.
- FIGS. 4a, 4b and 4c show examples of changes over time in the voltage at the terminals of the energy storage means.
- FIG. 1 represents a detonation system comprising several electronic detonators 1, 2, N.
- the electronic detonators 1, 2, N are connected to a firing unit or control system 20 through electrical leads 30.
- the electrical conductors 30 comprise detonator wires, a bus line, and a firing line.
- the control system 20 is responsible in particular for supplying the electronic detonators 1, 2, N, to verify that they function properly and to manage their operation, for example to control their firing.
- control system 20 comprises electronic circuits necessary to manage the operation of all the electronic detonators and to communicate with them.
- the firing unit or control system 20 generates supply signals as well as control signals, for example test signals or firing signals. These signals are sent via the electrical conductor wires 30 to the electronic detonators 1, 2, N.
- Each electronic detonator 1, 2, N has a delay time associated with it, for example by reception through the electrical conductor wires 30, the delay time originating from the firing unit 20, or by reception by others.
- wired or non-wired means from another unit, such as a console or programming unit (not shown in the figure).
- FIG. 2 represents an electronic detonator 1 according to one embodiment of the invention.
- FIG. 2 The essential means for the implementation of the invention are shown in FIG. 2.
- the electronic detonator 1 comprises a heating resistor R intended to ignite a detonator charge (not shown in the figure) during the firing of the electronic detonator 1.
- the electronic detonator 1 further comprises energy storage means 100 necessary in particular for the supply of the electronic detonator 1 in the case where it is not powered by the firing unit 20, as well as for the firing proper of the electronic detonator 1.
- the electronic fuse 1 is fed through the conducting wires.
- a supply signal from the firing unit 20 is rectified by a rectifier bridge 300 connected to the input of the electronic fuse 1, the power supply signal charging the energy storage means 100 .
- the energy storage means 100 comprise first energy storage means 101 configured to store the energy required to power the electronic detonator 1, and second energy storage means energy storage 102 configured to store the energy required for firing the electronic detonator 1.
- the first and second energy storage means 101, 102 may be replaced by single energy storage means storing the energy required for feeding the electronic detonator 1 and for its Firing.
- the first and second energy storage means 101, 102 respectively comprise a capacitor.
- the capacitor of the first storage means 101 is called the supply capacitor 101 and the capacitor of the second storage means 102 is called the firing capacitor 102.
- the supply capacitor 101 has the energy necessary to maintain the supply voltage of the electronic detonator 1 and, in particular, the electronic circuits necessary for the operation of the electronic detonator 1, for a period of time.
- the firing capacitor 102 stores the energy required to maintain a voltage necessary for firing the electronic detonator 1.
- the electronic detonator 1 further comprises a control module 200 comprising electronic circuits necessary for managing the operation of the electronic detonator 1.
- control module 200 controls the opening and closing of the switches T1, T2 respectively for charging the firing capacitor 102 and connecting the firing capacitor 102 to the heating resistor R when the electronic fuse 1 is fired.
- control module 200 comprises a microcontroller
- the microcontroller 201 comprises means for receiving a firing order. This firing order is received from the firing unit 20. It further comprises means for counting the delay time associated with the electronic detonator 1, that is to say the time elapsed since the electronic detonator 1 receives the firing order of the firing unit or control system 20 and to initiate the firing once the time count reaches the delay time associated with the electronic detonator 1.
- the electronic detonator 1, and in particular the control module 200, further comprises means for measuring the stored energy
- the means for measuring the energy stored in the energy storage means 100 include means for measuring the voltage at the terminals of the energy storage means 100 and the means for comparing the energy stored energy measured at a predetermined energy comprises means for comparing a voltage to a predetermined voltage.
- the measuring means comprise means for measuring the voltage at the terminals of the supply capacitor 101 and at the terminals of the firing capacitor 102.
- the measurement of the voltage at the terminals of the supply capacitor 101 makes it possible to know if it contains the energy necessary for the supply of the electronic detonator 1, in particular for the supply of the electronic circuits managing its operation 200.
- the stored energy measurement means 202 comprise an analog digital converter 202 (CAN or ADC in English nomenclature for "Analog Digital Converter”).
- analog-digital converter 202 CAN or ADC in English nomenclature for "Analog Digital Converter”
- the electronic detonator 1 comprises a single digital analog converter 202 for sampling the voltages at the terminals of the supply capacitor 101 and the firing capacitor 102.
- the control module 200 comprises a multiplexer 203 having two inputs 203a, 203b and an output 203c.
- the electronic detonator could include two digital analog converters instead of a multiplexer.
- the energy measuring and comparison means may comprise other means, for example analog voltage measurement and comparison means.
- the first input 203a of the multiplexer 203 is connected to the supply capacitor 101 and the second input 203b is connected to the firing capacitor 202.
- the output 203c of the multiplexer 203 is connected to the input 202a of the converter digital analog 202.
- the voltage across the supply capacitor 101 and the voltage across the firing capacitor 102 is sampled by the analog digital converter 202, each in turn.
- the microcontroller 201 provides for measuring the voltage across the supply capacitor 101 and the firing capacitor 102 periodically and of course only one at a time.
- the voltages at the inputs 203a, 203b are transmitted at its output 203c each in turn.
- the microcontroller 201 controls the measurement of the voltage across the supply capacitor 101, the first input 203a of the multiplexer 203 is selected and the voltage at this first input 203a is transmitted to the output 203c of the multiplexer 203, that is to say the input 202a of the analog digital converter 202.
- the voltage measured across the power supply 101 and firing capacitors 102 can be compared with a predetermined voltage representative of a predetermined energy, respectively.
- the predetermined voltages for the supply capacitor 101 and the firing capacitor 102 may have different values.
- the output of the digital analog converter 202b is sent to the microcontroller 201 where the comparison means will compare the voltage received from the analog digital converter 202 to a predetermined voltage representative of a predetermined energy.
- the predetermined energy corresponds to the minimum energy required to power the electronic detonator 1 and to ignite it.
- the predetermined energy takes into account a margin corresponding to the time elapsed between the moment when it is found that the electronic detonator 1 must be fired in advance and the moment of the actual firing.
- the energy storage means comprise a single capacitor in which the energy required makes it possible to maintain an adequate voltage for supplying the electronic detonator and for firing it.
- the digital analog converter directly samples the voltage across said capacitor, without the need for a multiplexer.
- FIG. 3 represents a flowchart representing the method of firing an electronic detonator according to one embodiment of the invention.
- the electronic detonator is as shown in FIG.
- the firing method according to the invention can be implemented in electronic detonators according to other embodiments.
- the electronic detonators 1, 2, N are powered or energized E0 by the firing unit 20 by means of the electrical conductors 30.
- the electronic detonators 1, 2, N are thus placed in this listening step E1 of a firing order.
- the electronic detonators 1, 2, N can implement other tasks while listening to a firing order.
- the detection of the reception of a firing order is implemented during a verification step E2 of the reception of a firing order.
- the firing process includes a step of measuring an energy stored in the energy storage means 100.
- the step of measuring the stored energy comprises a step of measuring the voltage E3 across the energy storage means 100.
- This step of measuring the voltage E3 across the energy storage means 100 is implemented as long as a delay time associated with the electronic detonator 1 does not flow from the reception of the order of placing fire (or detection of receipt of the firing order at the verification step E2).
- the measurement of the voltage E3 at the terminals of the energy storage means 100 comprises a first measuring at the terminals of the supply capacitor 101 and a second measurement at the terminals of the firing capacitor 102.
- the firing method according to the invention comprises a step of comparing the measured stored energy with the predetermined energy.
- the firing method comprises a comparison step E4 of the voltage measured at a predetermined voltage which is representative of a predetermined energy.
- the predetermined energy corresponds to a minimum energy necessary to power and to ignite the electronic detonator 1, 2, N.
- the comparison step E4 comprises a first step of comparing the voltage measured across the supply capacitor 101 to a first predetermined voltage V A (FIGS. 4a, 4b and 4c) and a second step of comparing the voltage measured at the terminals of the firing capacitor 102 at a second predetermined voltage V T (FIGS. 4a, 4b and 4c).
- the values of the first predetermined voltage V A and the second predetermined voltage V T may be different or equal to each other.
- the first predetermined voltage V A corresponds to the minimum energy required for the supply of the electronic detonator.
- the second predetermined voltage V T corresponds to a second minimum energy necessary for firing the electronic detonator.
- a single voltage is measured at the terminals of the energy storage means, this voltage being compared to a single predetermined voltage corresponding to a minimum energy necessary to power and ignite the electronic detonator 1, 2, N. If at the comparison step E4 of the stored energy measured at the predetermined energy, the measured energy is less than or equal to the predetermined energy, a firing step E7 is implemented (early firing ).
- the firing step E7 is implemented.
- the firing step E7 of the electronic detonator 1 is executed without waiting for the delay time associated with the electronic detonator to have elapsed.
- the firing process comprises in addition a determination step E8 of the time difference between a period of time elapsed from the reception of the firing order, and the delay time associated with the electronic detonator 1, 2, N.
- the firing process continues with the step of counting the delay time E5.
- the firing step E7 is implemented even though the delay time associated with the electronic detonator 1 has not elapsed since the reception of the order of firing.
- a verification step E6 it is checked whether the delay time associated with the electronic detonator 1 2,... N has elapsed from the reception of the firing order. In the positive case, the electronic detonator 1, 2, N is fired during the firing step El.
- the measurement step E3 the voltage at the terminals of the energy storage means 100 (supply capacitor 110 and firing capacitor 102 in the embodiment described) and the comparison step E4 of the measured voltage with the predetermined voltage (first predetermined voltage V A , and second predetermined voltage V T ) respectively is implemented.
- FIGS. 4a, 4b, 4c illustrate curves representative of the voltage values measured across the terminals of the supply capacitor 110 and across the terminals of the firing capacitor 102 as a function of time.
- FIGS. 4a, 4b and 4c represent a level of a first predetermined voltage V A representing the minimum energy required for the supply of the electronic detonator 1, 2, N, and a level of a second predetermined voltage V T representing minimum energy required for the actual firing of the electronic detonator 1, 2, N.
- V A representing the minimum energy required for the supply of the electronic detonator 1, 2, N
- V T representing minimum energy required for the actual firing of the electronic detonator 1, 2, N.
- the curve V 0 i represents the voltage at the terminals of the supply capacitor 101
- the curve referenced V102 represents the voltage at the terminals of the firing capacitor 102.
- the instant of time ti represents a moment at which a firing order is received by the electronic detonator 1, 2, N (detection of the reception of a firing order during the step of checking the reception E2).
- the second instant of time t 2 shown in the figures represents the moment at which the electronic detonator 1, 2, N is no longer powered or is partially powered by the firing unit 20.
- the third instant of time t 3 represents the instant at which the countdown of the delay time associated with the electronic detonator 1, 2, N has elapsed, at which point the electronic detonator 1, 2, N must be fired.
- the voltage at the terminals of the supply capacitor V 0 i and that at the terminals of the firing capacitor V 0 2 decrease from the second time instant t 2 and remain always higher than the predetermined voltages V T , V A for the supply capacitor 101 and the firing capacitor 102 until the delay time has elapsed.
- the electronic detonator 1, 2, N is fired at the firing step E7, once the delay time associated with it has elapsed.
- the voltage at the terminals of the firing capacitor 102 decreases very rapidly so that, at a time t 3 A, this voltage reaches the second predetermined voltage V T corresponding to the firing capacitor 102.
- the voltage at a terminal of the supply capacitor 101 decreases very rapidly so that it reaches the first predetermined voltage V A before the delay time associated with the electronic detonator has elapsed (time t 3 ).
- the electronic detonator 1, 2, N is thus fired at this time t 3 A in advance, that is to say before the associated delay time has elapsed (time t 3 ).
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Air Bags (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
- Stand-By Power Supply Arrangements (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1560578A FR3043192B1 (en) | 2015-11-04 | 2015-11-04 | METHOD FOR FIREDING AN ELECTRONIC DETONATOR AND ELECTRONIC DETONATOR |
PCT/FR2016/052829 WO2017077228A1 (en) | 2015-11-04 | 2016-11-02 | Electronic detonator firing method, and electronic detonator |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3371544A1 true EP3371544A1 (en) | 2018-09-12 |
EP3371544B1 EP3371544B1 (en) | 2020-03-25 |
Family
ID=55806429
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16809956.2A Active EP3371544B1 (en) | 2015-11-04 | 2016-11-02 | Method of firing an electronic detonator and electronic detonator |
Country Status (14)
Country | Link |
---|---|
US (1) | US10852117B2 (en) |
EP (1) | EP3371544B1 (en) |
CN (1) | CN108474637A (en) |
AU (1) | AU2016347800B2 (en) |
BR (1) | BR112018008849B1 (en) |
CA (1) | CA3002265A1 (en) |
CL (1) | CL2018001166A1 (en) |
CO (1) | CO2018004646A2 (en) |
EA (1) | EA037020B1 (en) |
FR (1) | FR3043192B1 (en) |
MX (1) | MX2018005502A (en) |
PE (1) | PE20181234A1 (en) |
WO (1) | WO2017077228A1 (en) |
ZA (1) | ZA201803647B (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3090087B1 (en) * | 2018-12-17 | 2022-06-24 | Commissariat Energie Atomique | Method of firing a set of electronic detonators |
CN110186338A (en) * | 2019-05-31 | 2019-08-30 | 贵州全安密灵科技有限公司 | A kind of igniter head inductance degree detection device and detection method |
WO2021033067A1 (en) * | 2019-08-16 | 2021-02-25 | Omnia Group (Proprietary) Limited | Identifying potential misfires in an electronic blasting system |
CN110940238B (en) * | 2019-11-08 | 2022-06-17 | 重庆云铭科技股份有限公司 | Low-power-consumption long-delay method and device for electronic detonator, storage medium and electronic terminal |
US11558056B2 (en) * | 2020-05-29 | 2023-01-17 | Bae Systems Information And Electronic Systems Integration Inc. | Apparatus and control of a single or multiple sources to fire countermeasure expendables on an aircraft |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2411339A (en) * | 1941-09-25 | 1946-11-19 | Rolfes Hans Jay | Firing means |
US4712477A (en) * | 1985-06-10 | 1987-12-15 | Asahi Kasei Kogyo Kabushiki Kaisha | Electronic delay detonator |
US4825765A (en) | 1986-09-25 | 1989-05-02 | Nippon Oil And Fats Co., Ltd. | Delay circuit for electric blasting, detonating primer having delay circuit and system for electrically blasting detonating primers |
US5460093A (en) * | 1993-08-02 | 1995-10-24 | Thiokol Corporation | Programmable electronic time delay initiator |
JP3585526B2 (en) * | 1994-05-31 | 2004-11-04 | 旭化成ケミカルズ株式会社 | Electronic delay detonator |
JP3623508B2 (en) * | 1994-07-28 | 2005-02-23 | 旭化成ケミカルズ株式会社 | Electronic delay ignition device and electric detonator |
JPH0942897A (en) * | 1995-07-26 | 1997-02-14 | Asahi Chem Ind Co Ltd | Electronic type delay detonator |
EP1405011A4 (en) * | 2001-06-06 | 2010-03-24 | Senex Explosives Inc | System for the initiation of rounds of individually delayed detonators |
CN2493908Y (en) * | 2001-07-24 | 2002-05-29 | 李孝杰 | Multi-function locking type explosion ignitor |
JP2004350476A (en) | 2003-05-26 | 2004-12-09 | Vizrotech Co Ltd | Power supply system to expansion cartridge for rock crushing |
CN101338995B (en) * | 2008-06-04 | 2013-05-29 | 北京铱钵隆芯科技有限责任公司 | Electronic detonator control chip and its connection reliability checking method |
CN104345214A (en) * | 2013-08-06 | 2015-02-11 | 北京全安密灵科技股份公司 | Method for indirectly judging whether impedance of electronic detonator ignition circuit is qualified or not |
-
2015
- 2015-11-04 FR FR1560578A patent/FR3043192B1/en active Active
-
2016
- 2016-11-02 US US15/773,424 patent/US10852117B2/en active Active
- 2016-11-02 AU AU2016347800A patent/AU2016347800B2/en active Active
- 2016-11-02 CN CN201680064383.6A patent/CN108474637A/en active Pending
- 2016-11-02 MX MX2018005502A patent/MX2018005502A/en unknown
- 2016-11-02 CA CA3002265A patent/CA3002265A1/en active Pending
- 2016-11-02 EP EP16809956.2A patent/EP3371544B1/en active Active
- 2016-11-02 BR BR112018008849-8A patent/BR112018008849B1/en active IP Right Grant
- 2016-11-02 PE PE2018000709A patent/PE20181234A1/en unknown
- 2016-11-02 WO PCT/FR2016/052829 patent/WO2017077228A1/en active Application Filing
- 2016-11-02 EA EA201891089A patent/EA037020B1/en unknown
-
2018
- 2018-04-30 CO CONC2018/0004646A patent/CO2018004646A2/en unknown
- 2018-05-02 CL CL2018001166A patent/CL2018001166A1/en unknown
- 2018-05-31 ZA ZA2018/03647A patent/ZA201803647B/en unknown
Also Published As
Publication number | Publication date |
---|---|
CL2018001166A1 (en) | 2018-06-22 |
BR112018008849A8 (en) | 2019-02-26 |
EA037020B1 (en) | 2021-01-27 |
EP3371544B1 (en) | 2020-03-25 |
US10852117B2 (en) | 2020-12-01 |
ZA201803647B (en) | 2019-09-25 |
AU2016347800A1 (en) | 2018-05-31 |
AU2016347800B2 (en) | 2021-10-07 |
CA3002265A1 (en) | 2017-05-11 |
US20180321024A1 (en) | 2018-11-08 |
WO2017077228A1 (en) | 2017-05-11 |
FR3043192B1 (en) | 2018-07-13 |
BR112018008849A2 (en) | 2018-11-06 |
PE20181234A1 (en) | 2018-08-01 |
EA201891089A1 (en) | 2018-10-31 |
MX2018005502A (en) | 2018-08-15 |
CO2018004646A2 (en) | 2018-05-10 |
FR3043192A1 (en) | 2017-05-05 |
BR112018008849B1 (en) | 2021-09-28 |
WO2017077228A9 (en) | 2017-07-20 |
CN108474637A (en) | 2018-08-31 |
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