METHOD FOR DETERMINING THE LOCATION OF A DETONATOR IN A WIRELESS NETWORK OF ELECTRONIC DETONATORS, METHOD FOR PROGRAMMING A FIRING PLANE AND CORRESPONDING FIRING SYSTEM
The invention relates to a method for determining the location of a detonator (101) in a wireless network of electronic detonators (10), the method comprising: a step of transmitting a signal by the detonator referred to as the transmitting detonator; a step of receiving the signal by at least one other detonator of the network referred to as the receiving detonator; and a step of calculating the distance between the transmitting detonator and the receiving detonator according to the power of the signal that has been received by the receiving detonator. The invention also relates to a method for programming a blast plan, the method comprising steps of a method for determining the location of a detonator. The invention also relates to a system (1) configured to implement a method for determining the location of a detonator. The invention also relates to the use of signal power loss to identify a location of a detonator (101).
The invention relates to a single-capacitor electronic detonator (10) comprising an explosive-initiating means (11), electronic control means (16) and a single energy storage capacitor (15) for supplying the electronic control means (16) and the explosive-initiating means (11) with power when firing the single-capacitor electronic detonator (10). It further comprises means (18) for clipping the voltage across the terminals of the single energy storage capacitor (14) to a value lower than a non-firing voltage value (Ua) of the explosive-initiating means (11), and voltage-regulating means (19) connected to means (13) for connecting to a power source (12), which means are suitable for limiting the output voltage to a value lower than a non-firing voltage value (Ua) of the explosive-initiating means (11). The invention also relates to the use thereof in a firing system to improve safety when using single-capacitor electronic detonators (10).
Detonator spool (10) comprising at least one body (11) configured to receive a cable wound around the body, the body (11) comprising at least one housing configured to receive a primer, an electronic control module housing (16a) configured to receive an electronic control module (50), and a bore (14) forming a hub configured to rotate the body of the spool (10); and detonator comprising such a spool (10).
A method for installing a set of electronic detonators into blast holes of a workface comprises the following steps: - connection (S41) of the detonators, loaded into the blast holes, to a mobile test device; - receipt (S42), by the mobile test device, of a message sent by each detonator; - determination (S43), using this message, of a set of values {V} representative of the total number of detonators connected to the mobile test device; - sending (S44), to one or more detonators of the set, a set of data {D} to be stored comprising the set of values {V} representative of the total number of detonators connected to the mobile test device; and - storage (S45) of the set of data {D} in recording means of one or more detonators of the set of electronic detonators. Use for later verifying the connection of the detonators before ignition.
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (France)
INSTITUT FRANCO-ALLEMAND DE RECHERCHES DE SAINT-LOUIS (ISL) (France)
UNIVERSITÉ DE STRASBOURG (France)
Inventor
Crowther, Nicolas
Gwizdala, Sylvain
Comet, Marc
Spitzer, Denis
Abstract
The present invention relates to a detonating kit intended for being placed inside a detonator. This detonating kit comprises two compositions comprising: a) a first composition comprising at least one thermite and at least one explosive, the at least one thermite comprising nanometric, submicrometric, micrometric or submillimetric particles, or mixtures thereof; the first composition further comprising solid micrometric or submillimetric microspheres, or mixtures thereof when the at least one thermite consists essentially of nanometric or submicrometric particles, or mixtures thereof; the at least one explosive comprising nanometric or submicrometric particles, or mixtures thereof; the first composition having a porosity of between 30% and 70%, preferably between 35% and 65%, and b) a second composition comprising at least one explosive comprising nanometric, submicrometric, micrometric or submillimetric particles, or mixtures thereof. The invention also relates to a relay comprising such a detonating kit, as well as to a detonator comprising such a relay.
C06B 33/00 - Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide
C06B 45/02 - Compositions or products which are defined by structure or arrangement of component or product comprising particles of diverse size or shape
WIRELESS ELECTRONIC DETONATOR COMPRISING A POWER SWITCH CONTROLLED BY AN OPTICAL SIGNAL, WIRELESS DETONATION SYSTEM AND METHOD FOR ACTIVATING SUCH A DETONATOR
COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES (France)
DAVEY BICKFORD (France)
Inventor
Biard, Lionel
Piaget, Bernard
Descharles, Mélanie
Berg, Vincent
Guyon, Franck
Abstract
Disclosed is a wireless electronic detonator (200) comprising a primary energy source (230) and at least one functional module (250), a power switch (240), arranged between the primary energy source and the functional module in order to connect or disconnect the functional module (250) and the primary energy source (230), and a control module (210) for the power switch comprising an optical receiver (220) for detecting and demodulating a light signal (LU) emitted by a control console (100) and generating a control signal depending on the demodulated light signal (LU) in order to at least control the power switch (240); a wireless detonation system (10) comprising such a wireless electronic detonator (200) and a control console (100) configured to emit a light signal (LU), and a method for activating such a wireless electronic detonator.
COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES (France)
DAVEY BICKFORD (France)
Inventor
Mannoni, Valérian
Abstract
A method for processing, in a receiver device, a signal representative of a stream of data coded from a series of information units through coding using a predefined group of symbols to code each information unit of the series, comprises: - a step of receiving (E0) said signal, said signal having been sent by a sender device via a transmission channel, said received signal containing a sequence of symbols of predefined length, and - a step of combined equalization and decoding (E3) applied to said received signal (Ireceived), using a mesh (100) representing the transmission channel (3) and the coding that is used, the mesh (100) containing a number of nodes (101) representing states of the transmission channel (104), said states of the transmission channel (104) taking into account said coding that is used.
An ignition system includes electronic detonators (2) and signalling devices (10). Each signalling device (10) is associated with one electronic detonator (2) and allows the presence of the electronic detonator (2) with which it is associated to be signalled. The ignition system further includes an image capture device (20) that is designed and positioned to capture images depicting the signalling devices (10). Use to verify the presence of electronic detonators on a worksite.
A method for configuring an ignition system comprising a plurality of sets of electronic detonators respectively connected to a plurality of local firing control units, comprising the following steps: - determining (E1) the communication quality between each local firing control unit and the electronic detonators of the plurality of sets of electronic detonators; and - selecting (E2) a master local firing control unit from among the plurality of local firing control units as a function of the determined communication qualities.
A fire control unit including a control module (13) and first terminals (11) that are designed to receive a firing line (21) to which a set of electronic detonators (20) is linked additionally includes second terminals (12) that are designed to receive a synchronization line (22) to which a second fire control unit (10) is linked, and switching means (14) that may be configured according to multiple configurations such that the control means (13) may be connected to or disconnected from the first terminals (11) or the second terminals (12), respectively, and that the first terminals (11) and the second terminals (12) may be connected to or disconnected from one another.
COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES (France)
DAVEY BICKFORD (France)
Inventor
Biard, Lionel
Despesse, Ghislain
Abstract
The invention relates to a peripheral power supply module (150) for an electronic detonator (110), which includes an on-board power source (157), wireless communication means (153) with a remote control console, processing means (156) and wired communication means (155) with at least one electronic detonator (110). Means forming a switch (K0) are mounted between, on the one hand, the on-board power source (157) and, on the other hand, the wireless communication means (153), the processing means (156) and the wired communication means (155). The peripheral power supply module (150) also includes means for detecting the coupling (158) of at least one electronic detonator (110), said means for coupling detection (158) being suitable for controlling said means forming a switch (K0) in order to supply said processing means (156) with power by means of said on-board power source (157) when at least one electronic detonator (110) is coupled to said peripheral power supply module (150), such that said peripheral power supply module (150) is in activated mode. The invention also relates to the use in particular in a pyrotechnical initiation system.
A method for firing an electronic detonator comprising a power storage means comprises receiving (E2), via the electronic detonator, a firing order. The following steps are implemented as long as the delay time associated with said electronic detonator has not elapsed since said reception (E2) of the firing order: measuring (E3) power stored in said power storage means, and firing (E7) said electronic detonator when the measured stored power is less than or equal to a predetermined power.
A system (10) for controlling at least one electronic detonator generates, as output (100), an output power supply signal (Vs) intended to power said at least one electronic detonator and generating commands to fire said at least one electronic detonator, said control system (10) comprising a control module (11) configured to generate firing commands and to generate a first power supply signal (Vm). The control system (10) further comprises a power supply module (12) generating a second power supply signal (Vc) intended to power said at least one electronic detonator, said output power supply signal (Vs) corresponding to said second power supply signal (Vc) once a command to fire said at least one electronic detonator has been generated, and corresponding to said first power supply signal (Vm) as long as no firing command has been generated.
The invention relates to a printed circuit (10) to be inserted into a metal case (31) of an electronic detonator (30), comprising a plate (11) consisting of a dielectric material and electronic components (12) arranged on at least one face (11') of the plate (11). The plate (11) comprises a metallised section (13a, 13b) on at least one edge (11a, 11b) of the plate (11), the metallised section (13a, 13b) being electrically connected to a component (12a) of the printed circuit (10) and coming into contact with an inner wall (31a) of the metal case (31).
An electronic detonator (1) designed to be connected by means of two conducting wires (a, b) to an associated control system (20), the conducting wires (a, b) comprising a charged plastic material and exhibiting a first resistance. The electronic detonator (1) comprises supervision means (11) and resistive means (12) disposed between the two conducting wires (a, b), the resistive means (12) exhibiting a second resistance, the second value of resistance being determined by the supervision means (11) in such a way that the sum of the values of the first resistance and of the second resistance is a predetermined value.
The invention relates to a system for triggering comprising a plurality of electronic detonator assemblies (11), where each electronic detonator assembly (11) is connected to a leading wire (12) linked to a local fire control unit (12). At least one of the local fire control units (13S) comprises an electronic synchronisation module (14) connected to a leading wire linked to a master local fire control unit (13M), which is one of the local fire control units (13). The invention is suitable for use in triggering a plurality of electronic detonator assemblies (11) according to a single blasting pattern.
The present invention relates to a system for programming and lighting electronic detonators (1) each having an identifier (IDdet) associated therewith, as well as to a corresponding method. The system includes: a programming unit (20) arranged to determine the identifiers of the detonators (1) and to associate said detonators individually, in memory, with a lighting time delay (Tdet) in order to form a blasting pattern (PT); a blasting unit (10) arranged to recover the blasting pattern (PT) from the memory (280) of the programming unit (20), and to control a blasting sequence of the detonators according to the recovered blasting pattern; and said programming unit (20) includes: a passive RFID tag (28) provided with a chip (280) acting as a memory for storing the blasting pattern (PT), and a radiofrequency reader (27) arranged such as to read/write passive tags.
A device for connecting at least two shockwave guide tubes (11, 12) comprises a casing (14) that comprises a substantially cylindrical housing able to house a detonator and which runs in a longitudinal direction of the housing, the casing (14) comprising, at one end, a mounting block (20) for the shockwave guide tubes (11, 12) in a direction parallel to the longitudinal direction of the housing. The mounting block (20) comprises two substantially semi-annular slots (21, 22) positioned symmetrically with respect to a longitudinal central axis (X) of the housing, and two through-openings (25, 26) for the shockwave guide tubes (11, 12) running parallel to the longitudinal direction and opening respectively into the substantially semi-annular slots (21, 22).
The invention relates to a fragmentation grenade including an ignition device (1) associated with a charge (2) and a set of projectiles (3) including projectiles (4) initially grouped around the charge (2) and to be separated upon explosion of the charge (2). According to the invention, at least one projectile (4) from the projectile set (3) is formed with an open cavity (5) for receiving a product tank (6).
F42B 12/22 - Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of high-explosive type with fragmentation-hull construction
F42B 12/24 - Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of high-explosive type with fragmentation-hull construction with grooves, recesses or other wall weakenings
F42B 12/28 - Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of high-explosive type with fragmentation-hull construction the projectile wall being built from annular elements
F42B 12/46 - Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materialsProjectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for producing chemical or physical reactionProjectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for signalling for dispensing gases, vapours, powders or chemically-reactive substances
F42B 12/48 - Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materialsProjectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for producing chemical or physical reactionProjectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for signalling for dispensing gases, vapours, powders or chemically-reactive substances smoke-producing
F42B 12/56 - Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materialsProjectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for producing chemical or physical reactionProjectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for signalling for dispensing discrete solid bodies
The invention relates to a system and a method for the non-destructive electrical testing of an electropyrotechnic initiator by a device, comprising an electrothermal bridge in parallel with a varistor, the system allowing, on the one hand, the charging, via a power supply of a capacitor for storing predetermined electrical energy below the energy needed to trigger the initiator and, on the other hand, the discharge of said capacitor into said initiator, the system comprising computer equipment for the acquisition and recording of the voltage across the terminals of the discharge circuit of the capacitor in the initiator. According to the invention, the charging and discharging of the capacitor are under dependence of the states, whether switched or not, of two relays, a first relay having a first switched circuit, which switches the power supply, and a second relay having a switched circuit, which switches the capacitor with the initiator, the second relay being controlled by the first relay, and a second switched circuit of the first relay allowing the state of the second relay to be controlled so that the switching of the first relay causes the second relay to switch.
G01R 31/28 - Testing of electronic circuits, e.g. by signal tracer
B60R 21/017 - Electrical circuits for triggering safety arrangements in case of vehicle accidents or impending vehicle accidents including arrangements for providing electric power to the safety arrangements
23.
FAST-OPERATING ELECTRICAL INITIATOR HAVING A PLASTIC STRUCTURE AND GAS GENERATOR COMPRISING ONE SUCH INITIATOR
The invention relates to an electrical initiator with PTMSꡞ-type compressed pyrotechnic sheets, comprising a cap containing at least one pyrotechnic charge, a base and a resistive element. The invention is characterised in that the base is made from a composite material comprising a matrix that is formed from at least one plastic material having fibres dispersed therein, said composite material having a melting point varying between 260 and 320 °C and an axial thermal expansion coefficient of less than 30.10-6 K-1 in accordance with test ASTM E831. Optionally, the aforementioned cap can be made from the same material. The invention also relates to a gas generator comprising one such initiator.
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