EP3265746B1 - System for controlling at least one electronic detonator - Google Patents

System for controlling at least one electronic detonator Download PDF

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Publication number
EP3265746B1
EP3265746B1 EP16712958.4A EP16712958A EP3265746B1 EP 3265746 B1 EP3265746 B1 EP 3265746B1 EP 16712958 A EP16712958 A EP 16712958A EP 3265746 B1 EP3265746 B1 EP 3265746B1
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EP
European Patent Office
Prior art keywords
control system
switching means
output
firing
supply signal
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EP16712958.4A
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German (de)
French (fr)
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EP3265746A1 (en
Inventor
Franck Guyon
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Davey Bickford SAS
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Davey Bickford SAS
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    • 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
    • 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

Definitions

  • the present invention relates to a control system of at least one electronic detonator.
  • a set of electronic detonators is connected to the same control system, the control system being configured to manage the operation of the detonators, as well as to power the detonators.
  • Each electronic detonator is connected to the control system by means of electric conductors or firing line, and comprises in particular an explosive or detonator charge, a primer or ignition module with electronic control, and means for storing a time of ignition. firing delay, the delay time corresponding to the time elapsed between the receipt by the electronic detonator of a firing command and the firing itself.
  • the control system generates as output a supply signal for supplying the electronic detonators, as well as control signals such as test signals or firing signals intended respectively to check the correct operation of the detonators and to initiate the firing of detonators.
  • These supply and control signals generated at the output of the control system are sent to the electronic detonators by means of the electric conductors.
  • protection means such as galvanic isolation means arranged between the electrical conductors son and the control system, are implemented.
  • the electronic detonators may include on-board power supply means are powered by their own power supply means.
  • the object of the present invention is to propose a control system for at least one electronic detonator in which the protection against overvoltages in the electrical conductor wires connecting the control system to the at least one electronic detonator is improved.
  • the present invention aims in a first aspect a control system of at least one electronic detonator outputting an output power signal for supplying said at least one electronic detonator and generating setting commands. firing said at least one electronic detonator, the control system comprising a control module configured to generate firing commands and to generate a first power signal.
  • control system further comprises a power supply module generating a second power supply signal for supplying the at least one electronic detonator, first output switching means arranged between the control module and the output of the control system and the second output switching means arranged between the power supply module and the output of the control system, the output power signal corresponding to the second power supply signal once a control of firing of said at least one electronic detonator is generated, and the first power signal as long as no firing command is generated.
  • the power module supports the power supply of the electronic detonator instead of the control module.
  • the control module in charge of the generation of operating commands of the electronic detonator, such as the firing control, is thus preserved from the risk of damage by the potential difference generated in the electrical conductor wires connecting the control system.
  • at least one electronic detonator while maintaining the supply of said at least one electronic detonator, and thus avoiding the risk of not firing the detonator.
  • the output signal of the control system corresponds to the first supply signal, ie to the signal power supply from the control module.
  • the control signal corresponds to the second power supply signal, that is to say to the power supply signal from the power supply module.
  • the first switching means make it possible to connect or disconnect the control module to the output of the control system.
  • the control module is connected to the output of the control system, the first power signal is output to the output of the control system.
  • the control module is disconnected from the output of the control system, the first power signal is not delivered to the output of the control system.
  • the second switching means are used to connect or disconnect the power module to the output of the control system.
  • the second power signal is output to the output of the control system when the power supply module is connected to the output of the control system.
  • the second signal The power supply is not delivered to the output of the control system when the power supply module is disconnected from the output of the control system.
  • the output switching means enabling the replacement of said first power signal by said second power supply signal at the output of the control system once a firing command of said at least one electronic detonator is generated.
  • the output control means allow a simple implementation to connect either the control module or the power module at the output of the control system.
  • the first switching means and the second switching means have an open state or a closed state and once a firing command is generated, the second switching means are put in the closed state and the first switching means are set to open once the second switching means are in the closed state.
  • the first switching means are in the closed state, and the second switching means are in the open state.
  • the second switching means is turned off and then the first switching means is set to open.
  • the power supply module is connected to the output of the control system in place of the control module.
  • the first power signal is replaced by the second power signal.
  • control system further comprises input switching means arranged upstream of the power supply module.
  • the input switching means make it possible to connect or disconnect the power supply module to the electronic circuits situated upstream.
  • the input switching means have an open state or a closed state, once a firing command is generated, the second switching means are put into a closed state once the switching means of entry are in open state.
  • the input control means is set to open state, the supply module thus being disconnected from the upstream electronic circuits.
  • control system comprises a power supply source connected to the power supply module through the input switching means.
  • the first power supply signal is thus generated from the electrical energy delivered by the power supply source.
  • the input switching means allow the connection or disconnection of the power supply module to the power supply source.
  • the input control means are in the closed state.
  • the input control means are in the open state, thereby disconnecting the power module from the power source.
  • control module comprises modulation means generating the first supply signal, the modulation means being configured to generate the first supply signal in phase with the second supply signal once a firing command is generated.
  • the power supply module comprises energy storage means, the second power supply signal being generated by the energy storage means.
  • the energy storage means comprise a capacitor, the second supply signal being taken across the capacitor.
  • the characteristics of the capacitor are determined so as to store the energy necessary to supply the at least one electronic detonator for at least a predetermined period of time.
  • the predetermined period of time substantially corresponds to at least one firing delay time.
  • said at least one electronic detonator is powered for at least the time elapsed between the generation of the firing command of the at least one electronic detonator and the firing of the at least one electronic detonator itself.
  • the power supply module comprises means for protecting the energy storage means against the overvoltages present at the output of the control system.
  • the means for protecting the storage means against overvoltages make it possible to protect the power supply module, in particular the energy storage means, against the overvoltages present on the firing line.
  • control module is disconnected from the output of the control system. Due to the disconnection of the control module from the output of the control system, the control module is protected against overvoltages present on the firing line.
  • control module as well as the power supply module are protected.
  • the present invention provides a system for firing a set of electronic detonators comprising a control system according to the invention, in which the control system is connected to all the electronic detonators by means of electrical conductors.
  • the firing system of a set of electronic detonators has advantages similar to those described above with reference to the control system of at least one detonator according to the invention.
  • the figure 1 represents the context of the invention, that is to say a system for firing several electronic detonators, comprising a control system 10 and a set of electronic detonators 20 connected to the control system 10 through conductive wires 30 electric, commonly called firing line.
  • the control system 10 is responsible in particular for supplying the electronic detonators 20, to verify that they function properly and to manage their operation, for example to control their firing.
  • control system 10 comprises electronic circuits necessary for generating supply signals as well as control signals, for example test signals or firing signals. These signals are generated at the output 100 of the control system 10 and are sent via the electrical conductor wires or firing line 30 to the electronic detonators 20.
  • control system 10 comprises an output 100 having two input / output terminals 100a, 100b.
  • the electrical conductor wires 30 are connected on the one hand to the input / output terminals 100a, 100b and on the other hand to the electronic detonators 20.
  • the figure 2 represents a control system 10 having an output 100, to which the electronic detonators 20 are connected through electrical conductors son 30.
  • the control system 10 generates at the output 100 an output power signal Vs intended to supply the electronic detonators 20.
  • the control system 10 comprises a control module 11 comprising electronic circuits necessary to manage the operation of the set of electronic detonators and to communicate with them.
  • the control module 11 is configured to generate commands for the electronic detonators 20, such as test commands or firing commands, as well as a first supply signal Vm for the supply of the detonators. electronic 20.
  • control module 11 comprises modulation means 13 configured to modulate an input voltage so as to generate controls for the electronic detonators 20.
  • the input voltage of the modulation means 13 comes from a power supply source Ve connected to the input of the control module 11.
  • the control system 10 further comprises a power supply module 12 generating a second power supply signal Vc for supplying the electronic detonators 20.
  • the first supply signal Vm at the output of the control module 11 is generated from the electrical energy delivered by the power supply source Ve.
  • the control system 10 comprises first switching means K1 arranged between the control module 11 and the output 100 of the control system 10 and the second switching means K2 arranged between the supply module 12 and the output 100 of the control system. order 10.
  • the output switching means K1, K2 make it possible to connect the output of the control module 11 or the output of the supply module 12 to the output 100 of the switching system 10, and thus to generate at the output 100 either the first supply signal Vm from the control module 11, the second supply signal Vc from the supply module 12.
  • the first switching means K1 and the second switching means K2 may have an open state or a closed state.
  • the control module 11 When the first switching means K1 are in the closed state, the control module 11 is connected to the output 100 of the control system 10. When they are in the open state, the control module 11 is not connected to the output 100 of the control system 10.
  • the power supply module 12 is connected to the output 100 of the control system 10.
  • the power supply module 12 is not connected to the output 100 of the control system 10.
  • the first supply signal Vm is delivered to the output 100 of the control system 10.
  • the second supply signal Vc is delivered to the output 100 of the control system 10.
  • the first output switching means K1 and the second output switching means K2 respectively comprise at least one relay for connecting or disconnecting the control module 11 and the power supply module 12 to the output 100 of the control system 10.
  • the relays are of the electromechanical type. This type of relay has the advantage of guaranteeing isolation for high value voltages.
  • relays could be used such as electronic relays.
  • the output switching means K1, K2 comprise a relay mounted in each conductor wire connected to the output 100 of the control system 10.
  • the output supply signal Vs corresponds to the first supply signal Vm, coming from the control module 11, except after the issuance of a firing command by the control module 11, in which case, the first supply signal Vm is replaced by the second supply signal Vc, coming from the supply module 12.
  • the first switching means K1 are in the closed state, and the second switching means K2 are in state open so that the first supply signal Vm is delivered to the output 100 of the control system 10.
  • the second switching means K2 are put in the closed state, and then the first switching means K1 are set to open state so that the second supply signal Vc is delivered to the output 100 of the control system 10.
  • the control module 11 including the electronic cards necessary to manage the operation of the set of electronic detonators 20 and to communicate with them, is disconnected electrical conductors son 30 connecting the control system 10 to all electronic detonators 20.
  • the control module 11 is thus preserved from the risks presented by the overvoltages that can appear on the son electrical conductors 30.
  • the power supply module 12 is connected to the electrical conductor wires 30 in order to deliver the second power supply signal Vc intended to power the electronic detonators 20 during their ignition. fire.
  • the second switching means K2 are put in the closed state and then the first switching means K1 are put in the open state.
  • Input switching means K3 are arranged between the power supply source Ve and the power supply module 12, the power supply source Ve being able to be connected to the power supply module 12 through switching means of K3 input according to their state.
  • the input switching means K3 may have an open state or a closed state.
  • the power supply source Ve When the switching means K3 are in a closed state, the power supply source Ve is connected to the power supply module 12, and when the input switching means K3 are in the open state, the power supply source Ve is disconnected from the power supply module 12.
  • the input switching means K3 comprise at least one relay.
  • the relay is an electromechanical relay.
  • the input switching means K3 may comprise an electronic relay.
  • a relay is mounted in each conductive wire connecting the power supply source Ve and the power supply module 12.
  • the power supply module 12 comprises energy storage means.
  • the energy storage means comprise a capacitor C.
  • the input switching means K3 are connected across the terminals of the capacitor C.
  • the second supply signal Vc is taken across the capacitor C.
  • the capacitor C is charged by the energy delivered by the power source Ve when the input switching means K3 are in the closed state.
  • the input switching means K3 are in the closed state when no firing command has been generated.
  • the power supply source Ve delivers electrical energy to the control module 11, as well as to the power supply module 12.
  • the capacitor C stores energy delivered by the power supply source Ve.
  • the input switching means K3 are controlled in the open state, the supply module 12 thus being disconnected from the power supply source Ve.
  • the power supply module 12 further comprises a first resistor R1 mounted between the input switching means K3 and the capacitor C.
  • This first resistor R1 makes it possible to limit the charging current of capacitor C.
  • the power supply module 12 furthermore comprises means 14 for protecting the capacitor C against the overvoltages present at the output 100 of the control system 10, coming for example from the electrical conductors 30.
  • the protection means 14 comprise a second resistor R2, a diode D and an inductance L.
  • the diode D is connected in parallel with the capacitor C, the second resistor R2 is connected between the diode D and the inductance L, the inductance L being connected to the second output switching means K2.
  • the characteristics of the capacitor C are determined so as to store the energy required to power a set of electronic detonators 20 for a predetermined period of time.
  • the predetermined period of time substantially corresponds to a firing delay time.
  • each electronic detonator 20 is programmed with a delay time.
  • the predetermined period of time substantially corresponds to the maximum firing delay time.
  • the set of electronic detonators 20 is powered by the energy delivered by the capacitor C during the firing phase.
  • the capacitor C must be so dimensioned as to maintain the second supply signal Vc over the predetermined period of time corresponding to the maximum firing delay time.
  • the dimensioning of the capacitor C also takes into account the number of electronic detonators 20 connected through the electrical conductors 30 to the control system 10.
  • a capacitor of 0, 36 F capacity could be used.
  • the input switching means K3 and output K1, K2 are controlled in the open or closed state so that the electronic detonators 20 are always powered.
  • the second output switching means K2 are closed before the first output switching means K1 are controlled in opening.
  • the second output switching means K2 are closed when the input switching means K3 are opened.
  • the power supply module 12 takes over from the control module 11 in the supply of the detonators 20, that is to say at the moment when the second output switching means K2 are controlled in closing (the first output switching means K1 being subsequently controlled in opening), the first supply signal Vm (or the output supply signal Vs) and the second supply signal Vc must be in phase.
  • the replacement of the first supply signal Vm with the second supply signal Vc is carried out after the generation of the firing command but before a first detonation itself of a detonator of the set of detonators 20.
  • the minimum delay time allocated to an electronic detonator 20 is determined by taking into account the switching time of the output switching means K1, K2 and switching means. K3 input.
  • the minimum delay time has a sufficiently high value that the output switching means K1, K2 and the input switching means K3 have changed state.
  • the input switching means K3 are controlled in opening in order to disconnect the power supply source Ve from the supply module 12
  • the second output switching means K2 are closedly controlled so as to connect the power supply module 12 to the output 100 of the control system 10
  • the first output switching means K1 are then controlled in opening so that the module 11 (and in particular the modulation means 13) is disconnected from the output 100 of the control system 10.

Description

La présente invention concerne un système de commande d'au moins un détonateur électronique.The present invention relates to a control system of at least one electronic detonator.

De manière générale et comme divulgue par AU 2012 272 289 A1 , un ensemble de détonateurs électroniques est relié à un même système de commande, le système de commande étant configuré pour gérer le fonctionnement des détonateurs, ainsi que pour alimenter les détonateurs.Generally and as disclosed by AU 2012 272 289 A1 , a set of electronic detonators is connected to the same control system, the control system being configured to manage the operation of the detonators, as well as to power the detonators.

Chaque détonateur électronique est relié au système de commande au moyen de fils conducteurs électriques ou ligne de tir, et comporte notamment un explosif ou charge détonatrice, une amorce ou module d'allumage à commande électronique, et des moyens de mémorisation d'un temps de retard de mise à feu, ce temps de retard correspondant au temps écoulé entre la réception par le détonateur électronique d'une commande de mise à feu et la mise à feu proprement dit.Each electronic detonator is connected to the control system by means of electric conductors or firing line, and comprises in particular an explosive or detonator charge, a primer or ignition module with electronic control, and means for storing a time of ignition. firing delay, the delay time corresponding to the time elapsed between the receipt by the electronic detonator of a firing command and the firing itself.

Le système de commande génère en sortie, un signal d'alimentation destiné à alimenter les détonateurs électroniques, ainsi que des signaux de commande tels que des signaux de test ou des signaux de mise à feu destinés respectivement à vérifier le bon fonctionnement des détonateurs et à initier la mise à feu des détonateurs. Ces signaux d'alimentation et de commande générés en sortie du système de commande sont adressés aux détonateurs électroniques au moyen des fils conducteurs électriques.The control system generates as output a supply signal for supplying the electronic detonators, as well as control signals such as test signals or firing signals intended respectively to check the correct operation of the detonators and to initiate the firing of detonators. These supply and control signals generated at the output of the control system are sent to the electronic detonators by means of the electric conductors.

Lorsque les détonateurs électroniques sont mis à feu, une différence de potentiel importante est générée entre les fils conducteurs électriques et un potentiel de référence, tel que celui représenté par la terre électrique.When the electronic detonators are fired, a significant potential difference is generated between the electrical conductors and a reference potential, such as that represented by the electrical ground.

Afin d'éviter l'endommagement du système de commande par cette différence de potentiel importante, des moyens de protection tels que des moyens d'isolation galvanique disposés entre les fils conducteurs électriques et le système de commande, sont mis en oeuvre.In order to avoid damage to the control system by this large potential difference, protection means such as galvanic isolation means arranged between the electrical conductors son and the control system, are implemented.

Malgré la présence des moyens de protection, un certain nombre de systèmes de commande est endommagé par cette importante différence de potentiel.Despite the presence of protection means, a number of control systems is damaged by this significant difference in potential.

Une solution pour éviter l'endommagement du système de commande est de séparer électriquement les détonateurs électroniques du système de commande une fois que la commande de mise à feu est adressée aux détonateurs. Dans un tel cas, les détonateurs électroniques pouvant comporter des moyens d'alimentation embarqués, sont alimentés par leurs propres moyens d'alimentation.One solution to avoid damage to the control system is to electrically separate the electronic detonators from the control system once the firing control is sent to the detonators. In such a case, the electronic detonators may include on-board power supply means are powered by their own power supply means.

Néanmoins, il existe des risques de non mise à feu d'un détonateur électronique en cas de défaut de ses moyens d'alimentation embarqués.Nevertheless, there are risks of not firing an electronic detonator in case of failure of its onboard power supply means.

La présente invention a pour but de proposer un système de commande d'au moins un détonateur électronique dans lequel la protection contre des surtensions dans les fils conducteurs électriques reliant le système de commande audit au moins un détonateur électronique est améliorée.The object of the present invention is to propose a control system for at least one electronic detonator in which the protection against overvoltages in the electrical conductor wires connecting the control system to the at least one electronic detonator is improved.

A cet égard, la présente invention vise selon un premier aspect un système de commande d'au moins un détonateur électronique générant en sortie un signal d'alimentation de sortie destiné à l'alimentation dudit au moins un détonateur électronique et générant des commandes de mise à feu dudit au moins un détonateur électronique, le système de commande comportant un module de commande configuré pour générer des commandes de mise à feu et pour générer un premier signal d'alimentation.In this regard, the present invention aims in a first aspect a control system of at least one electronic detonator outputting an output power signal for supplying said at least one electronic detonator and generating setting commands. firing said at least one electronic detonator, the control system comprising a control module configured to generate firing commands and to generate a first power signal.

Selon l'invention, le système de commande comprend en outre un module d'alimentation générant un second signal d'alimentation destiné à l'alimentation dudit au moins un détonateur électronique, des premiers moyens de commutation de sortie disposés entre le module de commande et la sortie du système de commande et des seconds moyens de commutation de sortie disposés entre le module d'alimentation et la sortie du système de commande, le signal d'alimentation de sortie correspondant au second signal d'alimentation une fois qu'une commande de mise à feu dudit au moins un détonateur électronique est générée, et au premier signal d'alimentation tant qu'aucune commande de mise à feu n'est générée.According to the invention, the control system further comprises a power supply module generating a second power supply signal for supplying the at least one electronic detonator, first output switching means arranged between the control module and the output of the control system and the second output switching means arranged between the power supply module and the output of the control system, the output power signal corresponding to the second power supply signal once a control of firing of said at least one electronic detonator is generated, and the first power signal as long as no firing command is generated.

Ainsi, une fois que la mise à feu du détonateur électronique est initiée, le module d'alimentation prend en charge l'alimentation du détonateur électronique en remplacement du module de commande.Thus, once the ignition of the electronic detonator is initiated, the power module supports the power supply of the electronic detonator instead of the control module.

Le module de commande en charge de la génération de commandes de fonctionnement du détonateur électronique, telle que la commande de mise à feu, est ainsi préservé des risques d'endommagement par la différence de potentiel généré dans les fils conducteurs électriques reliant le système de commande audit au moins un détonateur électronique, tout en conservant l'alimentation dudit au moins un détonateur électronique, et en évitant ainsi le risque de non mise à feu du détonateur.The control module in charge of the generation of operating commands of the electronic detonator, such as the firing control, is thus preserved from the risk of damage by the potential difference generated in the electrical conductor wires connecting the control system. at least one electronic detonator, while maintaining the supply of said at least one electronic detonator, and thus avoiding the risk of not firing the detonator.

Ainsi, tant qu'une commande de mise à feu n'est pas générée par le système de commande, le signal d'alimentation de sortie du système de commande correspond au premier signal d'alimentation, c'est-à-dire au signal d'alimentation provenant du module de commande.Thus, as long as a firing command is not generated by the control system, the output signal of the control system corresponds to the first supply signal, ie to the signal power supply from the control module.

C'est seulement après qu'une commande de mise à feu est générée par le module de commande, c'est-à-dire une fois que la commande de mise à feu est générée, que le signal d'alimentation de sortie du système de commande correspond au second signal d'alimentation, c'est-à-dire au signal d'alimentation provenant du module d'alimentation.It is only after a firing command is generated by the control module, i.e. once the firing command is generated, that the system output power signal The control signal corresponds to the second power supply signal, that is to say to the power supply signal from the power supply module.

En pratique, les premiers moyens de commutation permettent de connecter ou de déconnecter le module de commande à la sortie du système de commande. Lorsque le module de commande est connecté à la sortie du système de commande, le premier signal d'alimentation est délivré à la sortie du système de commande. Au contraire, lorsque le module de commande est déconnecté de la sortie du système de commande, le premier signal d'alimentation n'est pas délivré à la sortie du système de commande.In practice, the first switching means make it possible to connect or disconnect the control module to the output of the control system. When the control module is connected to the output of the control system, the first power signal is output to the output of the control system. On the contrary, when the control module is disconnected from the output of the control system, the first power signal is not delivered to the output of the control system.

De manière similaire, les seconds moyens de commutation permettent de connecter ou de déconnecter le module d'alimentation à la sortie du système de commande. Ainsi, le second signal d'alimentation est délivré à la sortie du système de commande lorsque le module d'alimentation est connecté à la sortie du système de commande. Au contraire, le second signal d'alimentation n'est pas délivré à la sortie du système de commande lorsque le module d'alimentation est déconnecté de la sortie du système de commande.Similarly, the second switching means are used to connect or disconnect the power module to the output of the control system. Thus, the second power signal is output to the output of the control system when the power supply module is connected to the output of the control system. On the contrary, the second signal The power supply is not delivered to the output of the control system when the power supply module is disconnected from the output of the control system.

Selon une caractéristique, les moyens de commutation de sortie permettant le remplacement dudit premier signal d'alimentation par ledit second signal d'alimentation en sortie du système de commande une fois qu'une commande de mise à feu dudit au moins un détonateur électronique est générée.According to one characteristic, the output switching means enabling the replacement of said first power signal by said second power supply signal at the output of the control system once a firing command of said at least one electronic detonator is generated. .

Les moyens de commande de sortie permettent une mise en oeuvre simple pour relier, soit le module de commande, soit le module d'alimentation, à la sortie du système de commande.The output control means allow a simple implementation to connect either the control module or the power module at the output of the control system.

Selon une caractéristique, les premiers moyens de commutation et les seconds moyens de commutation présentent un état ouvert ou un état fermé et une fois qu'une commande de mise à feu est générée, les seconds moyens de commutation sont mis en état fermé et les premiers moyens de commutation sont mis en état ouvert une fois que les seconds moyens de commutation sont en état fermé.According to one characteristic, the first switching means and the second switching means have an open state or a closed state and once a firing command is generated, the second switching means are put in the closed state and the first switching means are set to open once the second switching means are in the closed state.

Ainsi, tant qu'une commande de mise à feu n'est pas complétement générée, les premiers moyens de commutation sont en état fermé, et les seconds moyens de commutation sont en état ouvert. Une fois qu'une commande de mise à feu est générée, les seconds moyens de commutation sont mis en état fermé et ensuite les premiers moyens de commutation sont mis en état ouvert.Thus, as long as a firing command is not completely generated, the first switching means are in the closed state, and the second switching means are in the open state. Once a firing command is generated, the second switching means is turned off and then the first switching means is set to open.

Grâce aux changements d'état précités des moyens de commutation, une fois qu'une commande de mise à feu a été générée, le module d'alimentation est relié à la sortie du système de commande à la place du module de commande.With the aforementioned state changes of the switching means, once a firing command has been generated, the power supply module is connected to the output of the control system in place of the control module.

Par conséquent, une fois qu'une commande de mise à feu est générée, le premier signal d'alimentation est remplacé par le second signal d'alimentation.Therefore, once a firing command is generated, the first power signal is replaced by the second power signal.

Selon une caractéristique, le système de commande comporte en outre des moyens de commutation d'entrée disposés en amont du module d'alimentation.According to one characteristic, the control system further comprises input switching means arranged upstream of the power supply module.

Les moyens de commutation d'entrée permettent de connecter ou de déconnecter le module d'alimentation aux circuits électroniques situés en amont.The input switching means make it possible to connect or disconnect the power supply module to the electronic circuits situated upstream.

Avantageusement, les moyens de commutation d'entrée présentent un état ouvert ou un état fermé, une fois qu'une commande de mise à feu est générée, les seconds moyens de commutation sont mis en état fermé une fois que les moyens de commutation d'entrée sont en état ouvert.Advantageously, the input switching means have an open state or a closed state, once a firing command is generated, the second switching means are put into a closed state once the switching means of entry are in open state.

Une fois qu'une commande de mise à feu est générée, les moyens de commande d'entrée sont mis en état ouvert, le module d'alimentation étant ainsi déconnecté des circuits électroniques situé en amont.Once a firing command is generated, the input control means is set to open state, the supply module thus being disconnected from the upstream electronic circuits.

Ainsi, une possible surtension présente sur la ligne de tir n'endommagerait pas des circuits électroniques situés en amont du module d'alimentation.Thus, a possible overvoltage present on the firing line would not damage electronic circuits located upstream of the power supply module.

Selon une caractéristique, le système de commande comporte une source d'alimentation électrique reliée au module d'alimentation à travers les moyens de commutation d'entrée.According to one characteristic, the control system comprises a power supply source connected to the power supply module through the input switching means.

Le premier signal d'alimentation est ainsi généré à partir de l'énergie électrique délivrée par la source d'alimentation électrique.The first power supply signal is thus generated from the electrical energy delivered by the power supply source.

Par ailleurs, les moyens de commutation d'entrée permettent la connexion ou la déconnexion du module d'alimentation à la source d'alimentation électrique.Furthermore, the input switching means allow the connection or disconnection of the power supply module to the power supply source.

Ainsi, tant qu'aucune commande de mise à feu n'est générée, les moyens de commande d'entrée sont en état fermé.Thus, as long as no firing command is generated, the input control means are in the closed state.

Lorsque, les moyens de commutation d'entrée sont en état fermé, ils permettent la connexion de la source d'alimentation électrique au module d'alimentation.When the input switching means are in the closed state, they allow the connection of the power supply source to the power supply module.

Une fois qu'une commande de mise à feu est générée, les moyens de commande d'entrée sont en état ouvert, le module d'alimentation étant ainsi déconnecté de la source d'alimentation.Once a firing command is generated, the input control means are in the open state, thereby disconnecting the power module from the power source.

Selon une caractéristique avantageuse, le module de commande comporte des moyens de modulation générant le premier signal d'alimentation, les moyens de modulation étant configurés pour générer le premier signal d'alimentation en phase avec le second signal d'alimentation une fois qu'une commande de mise à feu est générée.According to an advantageous characteristic, the control module comprises modulation means generating the first supply signal, the modulation means being configured to generate the first supply signal in phase with the second supply signal once a firing command is generated.

Ainsi, il y a une continuité dans l'alimentation du détonateur lors du remplacement du premier signal d'alimentation par le second signal d'alimentation.Thus, there is continuity in the power supply of the detonator when replacing the first power signal with the second power signal.

Selon une caractéristique, le module d'alimentation comporte des moyens de stockage d'énergie, le second signal d'alimentation étant généré par les moyens de stockage d'énergie.According to one characteristic, the power supply module comprises energy storage means, the second power supply signal being generated by the energy storage means.

Par exemple, les moyens de stockage d'énergie comportent un condensateur, le second signal d'alimentation étant pris aux bornes du condensateur.For example, the energy storage means comprise a capacitor, the second supply signal being taken across the capacitor.

Selon une caractéristique, les caractéristiques du condensateur sont déterminées de façon à stocker l'énergie nécessaire pour alimenter ledit au moins un détonateur électronique pendant au moins une période de temps prédéterminée.According to one characteristic, the characteristics of the capacitor are determined so as to store the energy necessary to supply the at least one electronic detonator for at least a predetermined period of time.

Par exemple, la période de temps prédéterminée correspond sensiblement à au moins un temps de retard de mise à feu.For example, the predetermined period of time substantially corresponds to at least one firing delay time.

Ainsi, ledit au moins un détonateur électronique est alimenté pendant au moins le temps écoulé entre la génération de la commande de mise à feu dudit au moins un détonateur électronique et la mise à feu dudit au moins un détonateur électronique proprement dite.Thus, said at least one electronic detonator is powered for at least the time elapsed between the generation of the firing command of the at least one electronic detonator and the firing of the at least one electronic detonator itself.

Selon encore une caractéristique, le module d'alimentation comporte des moyens de protection des moyens de stockage d'énergie contre les surtensions présentes en sortie du système de commande.According to another characteristic, the power supply module comprises means for protecting the energy storage means against the overvoltages present at the output of the control system.

Les moyens de protection des moyens de stockage contre les surtensions permettent de protéger le module d'alimentation, en particulier les moyens de stockage d'énergie, contre les surtensions présentes sur la ligne de tir.The means for protecting the storage means against overvoltages make it possible to protect the power supply module, in particular the energy storage means, against the overvoltages present on the firing line.

Comme indiqué ci-dessus, une fois qu'une commande de mise à feu est émise, le module de commande est déconnecté de la sortie du système de commande. Du fait de la déconnexion du module de commande de la sortie du système de commande, le module de commande est protégé contre des surtensions présentes sur la ligne de tir.As indicated above, once a firing command is issued, the control module is disconnected from the output of the control system. Due to the disconnection of the control module from the output of the control system, the control module is protected against overvoltages present on the firing line.

Par conséquent, le module de commande, ainsi que le module d'alimentation sont protégés.Therefore, the control module as well as the power supply module are protected.

La présente invention vise selon un second aspect un système de mise à feu d'un ensemble de détonateurs électroniques comportant un système de commande conforme à l'invention, dans lequel le système de commande est relié à l'ensemble des détonateurs électroniques au moyen de fils conducteurs électriques.According to a second aspect, the present invention provides a system for firing a set of electronic detonators comprising a control system according to the invention, in which the control system is connected to all the electronic detonators by means of electrical conductors.

Le système de mise à feu d'un ensemble de détonateurs électroniques présente des avantages analogues à ceux décrits précédemment en référence au système de commande d'au moins un détonateur selon l'invention.The firing system of a set of electronic detonators has advantages similar to those described above with reference to the control system of at least one detonator according to the invention.

D'autres particularités et avantages de l'invention apparaîtront encore dans la description ci-après.Other features and advantages of the invention will become apparent in the description below.

Aux dessins annexés, donnés à titre d'exemples non limitatifs :

  • la figure 1 représente schématiquement un système de mise à feu de plusieurs détonateurs électroniques comportant un système de commande conforme à un mode de réalisation de l'invention, et
  • la figure 2 représente un système de commande selon un mode de réalisation de l'invention.
In the accompanying drawings, given as non-limiting examples:
  • the figure 1 schematically represents a firing system of several electronic detonators comprising a control system according to an embodiment of the invention, and
  • the figure 2 represents a control system according to an embodiment of the invention.

La figure 1 représente le contexte de l'invention, c'est-à-dire un système de mise à feu de plusieurs détonateurs électroniques, comportant un système de commande 10 et un ensemble de détonateurs électroniques 20 reliés au système de commande 10 à travers des fils conducteurs électriques 30, nommé couramment ligne de tir.The figure 1 represents the context of the invention, that is to say a system for firing several electronic detonators, comprising a control system 10 and a set of electronic detonators 20 connected to the control system 10 through conductive wires 30 electric, commonly called firing line.

Le système de commande 10 est chargé notamment d'alimenter les détonateurs électroniques 20, de vérifier qu'ils fonctionnent correctement et de gérer leur fonctionnement, par exemple de commander leur mise à feu.The control system 10 is responsible in particular for supplying the electronic detonators 20, to verify that they function properly and to manage their operation, for example to control their firing.

Pour ce faire, le système de commande 10 comporte des circuits électroniques nécessaires pour générer des signaux d'alimentation ainsi que des signaux de commande, par exemple des signaux de test ou des signaux de mise à feu. Ces signaux sont générés en sortie 100 du système de commande 10 et sont adressés via les fils conducteurs électriques ou ligne de tir 30 aux détonateurs électroniques 20.To do this, the control system 10 comprises electronic circuits necessary for generating supply signals as well as control signals, for example test signals or firing signals. These signals are generated at the output 100 of the control system 10 and are sent via the electrical conductor wires or firing line 30 to the electronic detonators 20.

Selon un mode de réalisation, le système de commande 10 comporte une sortie 100 comportant deux bornes d'entrée/sortie 100a, 100b. Les fils conducteurs électriques 30 sont reliés d'une part, aux bornes d'entrée/sortie 100a, 100b et d'autre part, aux détonateurs électroniques 20.According to one embodiment, the control system 10 comprises an output 100 having two input / output terminals 100a, 100b. The electrical conductor wires 30 are connected on the one hand to the input / output terminals 100a, 100b and on the other hand to the electronic detonators 20.

La figure 2 représente un système de commande 10 comportant une sortie 100, à laquelle les détonateurs électroniques 20 sont connectés à travers des fils conducteurs électriques 30.The figure 2 represents a control system 10 having an output 100, to which the electronic detonators 20 are connected through electrical conductors son 30.

Le système de commande 10 génère à la sortie 100 un signal d'alimentation de sortie Vs destiné à l'alimentation des détonateurs électroniques 20.The control system 10 generates at the output 100 an output power signal Vs intended to supply the electronic detonators 20.

Le système de commande 10 comporte un module de commande 11 comportant des circuits électroniques nécessaires pour gérer le fonctionnement de l'ensemble de détonateurs électroniques et pour communiquer avec eux. Ainsi, le module de commande 11 est configuré pour générer des commandes pour les détonateurs électroniques 20, telles que des commandes de test ou des commandes de mise à feu, ainsi qu'un premier signal d'alimentation Vm destiné à l'alimentation des détonateurs électroniques 20.The control system 10 comprises a control module 11 comprising electronic circuits necessary to manage the operation of the set of electronic detonators and to communicate with them. Thus, the control module 11 is configured to generate commands for the electronic detonators 20, such as test commands or firing commands, as well as a first supply signal Vm for the supply of the detonators. electronic 20.

En particulier, le module de commande 11 comporte des moyens de modulation 13 configurés pour moduler une tension d'entrée de façon à générer des commandes destinées aux détonateurs électroniques 20.In particular, the control module 11 comprises modulation means 13 configured to modulate an input voltage so as to generate controls for the electronic detonators 20.

La tension d'entrée des moyens de modulation13 provient d'une source d'alimentation électrique Ve reliée en entrée du module de commande 11.The input voltage of the modulation means 13 comes from a power supply source Ve connected to the input of the control module 11.

Le système de commande 10 comporte en outre un module d'alimentation 12 générant un second signal d'alimentation Vc destiné à l'alimentation des détonateurs électroniques 20.The control system 10 further comprises a power supply module 12 generating a second power supply signal Vc for supplying the electronic detonators 20.

Ainsi, le premier signal d'alimentation Vm en sortie du module de commande 11 est généré à partir de l'énergie électrique délivrée par la source d'alimentation électrique Ve.Thus, the first supply signal Vm at the output of the control module 11 is generated from the electrical energy delivered by the power supply source Ve.

Le système de commande 10 comporte des premiers moyens de commutation K1 disposés entre le module de commande 11 et la sortie 100 du système de commande 10 et des seconds moyens de commutation K2 disposés entre le module d'alimentation 12 et la sortie 100 du système de commande 10.The control system 10 comprises first switching means K1 arranged between the control module 11 and the output 100 of the control system 10 and the second switching means K2 arranged between the supply module 12 and the output 100 of the control system. order 10.

Les moyens de commutation de sortie K1, K2 permettent de relier à la sortie 100 du système de commutation 10, soit la sortie du module de commande 11 soit la sortie du module d'alimentation 12, et d'ainsi générer à la sortie 100 soit le premier signal d'alimentation Vm provenant du module de commande 11, soit le second signal d'alimentation Vc provenant du module d'alimentation 12.The output switching means K1, K2 make it possible to connect the output of the control module 11 or the output of the supply module 12 to the output 100 of the switching system 10, and thus to generate at the output 100 either the first supply signal Vm from the control module 11, the second supply signal Vc from the supply module 12.

Les premiers moyens de commutation K1 et les seconds moyens de commutation K2 peuvent présenter un état ouvert ou un état fermé.The first switching means K1 and the second switching means K2 may have an open state or a closed state.

Lorsque les premiers moyens de commutation K1 sont en état fermé, le module de commande 11 est relié à la sortie 100 du système de commande 10. Lorsqu'ils sont en état ouvert, le module de commande 11 n'est pas relié à la sortie 100 du système de commande 10.When the first switching means K1 are in the closed state, the control module 11 is connected to the output 100 of the control system 10. When they are in the open state, the control module 11 is not connected to the output 100 of the control system 10.

De manière similaire, lorsque les seconds moyens de commutation K2 sont en état fermé le module d'alimentation 12 est relié à la sortie 100 du système de commande 10. Lorsqu'ils sont en état ouvert, le module d'alimentation 12 n'est pas relié à la sortie 100 du système de commande 10.Similarly, when the second switching means K2 are in the closed state, the power supply module 12 is connected to the output 100 of the control system 10. When they are in the open state, the power supply module 12 is not connected to the output 100 of the control system 10.

Ainsi, lorsque les premiers moyens de commutation K1 sont en état fermé et que les seconds moyens de commutation sont en état ouvert, le premier signal d'alimentation Vm est délivré à la sortie 100 du système de commande 10. Lorsque les premiers moyens de commutation K1 sont en état ouvert et que les seconds moyens de commutation K2 sont en état fermé, le second signal d'alimentation Vc est délivré à la sortie 100 du système de commande 10.Thus, when the first switching means K1 are in the closed state and the second switching means are in the open state, the first supply signal Vm is delivered to the output 100 of the control system 10. When the first switching means K1 are in the open state and the second switching means K2 are in the closed state, the second supply signal Vc is delivered to the output 100 of the control system 10.

Les premiers moyens de commutation de sortie K1 et les seconds moyens de commutation de sortie K2 comportent respectivement au moins un relais permettant de connecter ou déconnecter le module de commande 11 et le module d'alimentation 12 à la sortie 100 du système de commande 10.The first output switching means K1 and the second output switching means K2 respectively comprise at least one relay for connecting or disconnecting the control module 11 and the power supply module 12 to the output 100 of the control system 10.

Par exemple, les relais sont de type électromécanique. Ce type de relais présente l'avantage de garantir l'isolement pour des tensions de valeur élevée.For example, the relays are of the electromechanical type. This type of relay has the advantage of guaranteeing isolation for high value voltages.

Bien entendu, d'autres types de relais pourraient être utilisés comme par exemple des relais électroniques.Of course, other types of relays could be used such as electronic relays.

Dans un mode de réalisation, les moyens de commutation de sortie K1, K2 comportent un relais monté dans chaque fils conducteur relié à la sortie 100 du système de commande 10.In one embodiment, the output switching means K1, K2 comprise a relay mounted in each conductor wire connected to the output 100 of the control system 10.

En pratique, lors du fonctionnement du système de commande 10, le signal d'alimentation de sortie Vs correspond au premier signal d'alimentation Vm, provenant du module de commande 11, sauf après l'émission d'une commande de mise à feu par le module de commande 11, auquel cas, le premier signal d'alimentation Vm est remplacé par le second signal d'alimentation Vc, provenant du module d'alimentation 12.In practice, during the operation of the control system 10, the output supply signal Vs corresponds to the first supply signal Vm, coming from the control module 11, except after the issuance of a firing command by the control module 11, in which case, the first supply signal Vm is replaced by the second supply signal Vc, coming from the supply module 12.

Ainsi, une fois qu'une commande de mise à feu est générée par le module de commande 11, le remplacement du premier signal d'alimentation Vm par le second signal d'alimentation Vc est mise en oeuvre.Thus, once a firing command is generated by the control module 11, the replacement of the first supply signal Vm with the second supply signal Vc is implemented.

Pour ce faire, lors du fonctionnement du système de commande 10, dans le cas où aucune commande de mise à feu n'a été générée, les premiers moyens de commutation K1 sont en état fermé, et les seconds moyens de commutation K2 sont en état ouvert de façon à ce que le premier signal d'alimentation Vm soit délivré à la sortie 100 du système de commande 10.To do this, during the operation of the control system 10, in the case where no firing command has been generated, the first switching means K1 are in the closed state, and the second switching means K2 are in state open so that the first supply signal Vm is delivered to the output 100 of the control system 10.

Une fois qu'une commande de mise à feu est générée par le module de commande 11, les seconds moyens de commutation K2 sont mis en état fermé, et ensuite les premiers moyens de commutation K1 sont mis en état ouvert de façon à ce que le second signal d'alimentation Vc soit délivré à la sortie 100 du système de commande 10.Once a firing command is generated by the control module 11, the second switching means K2 are put in the closed state, and then the first switching means K1 are set to open state so that the second supply signal Vc is delivered to the output 100 of the control system 10.

De cette façon, une fois qu'une commande de mise à feu est générée par le système de commande 10 vers les détonateurs électroniques 20, le module de commande 11, comportant les cartes électroniques nécessaires pour gérer le fonctionnement de l'ensemble de détonateurs électroniques 20 et pour communiquer avec eux, est déconnecté des fils conducteurs électriques 30 reliant le système de commande 10 à l'ensemble des détonateurs électroniques 20. Le module de commande 11 est ainsi préservé des risques présentés par les surtensions pouvant apparaitre sur les fils conducteurs électriques 30.In this way, once a firing command is generated by the control system 10 to the electronic detonators 20, the control module 11, including the electronic cards necessary to manage the operation of the set of electronic detonators 20 and to communicate with them, is disconnected electrical conductors son 30 connecting the control system 10 to all electronic detonators 20. The control module 11 is thus preserved from the risks presented by the overvoltages that can appear on the son electrical conductors 30.

Afin d'assurer l'alimentation des détonateurs électroniques 20 pendant leur mise à feu, le module d'alimentation 12 est relié aux fils conducteurs électriques 30 afin de délivrer le second signal d'alimentation Vc destiné à alimenter les détonateurs électroniques 20 pendant leur mise à feu.In order to supply power to the electronic detonators 20 during their firing, the power supply module 12 is connected to the electrical conductor wires 30 in order to deliver the second power supply signal Vc intended to power the electronic detonators 20 during their ignition. fire.

On notera que dans le mode de réalisation décrit, les seconds moyens de commutation K2 sont mis en état fermé et qu'ensuite les premiers moyens de commutation K1 sont mis en état ouvert.It will be noted that in the embodiment described, the second switching means K2 are put in the closed state and then the first switching means K1 are put in the open state.

Grâce au changement d'état des moyens de commutation K1, K2 dans l'ordre précité, il est garanti que les détonateurs électroniques 20 sont alimentés sans arrêt.Thanks to the change of state of the switching means K1, K2 in the aforementioned order, it is ensured that the electronic detonators 20 are powered continuously.

Des moyens de commutation d'entrée K3 sont disposés entre la source d'alimentation électrique Ve et le module d'alimentation 12, la source d'alimentation électrique Ve pouvant être reliée au module d'alimentation 12 à travers des moyens de commutation d'entrée K3 en fonction de leur état.Input switching means K3 are arranged between the power supply source Ve and the power supply module 12, the power supply source Ve being able to be connected to the power supply module 12 through switching means of K3 input according to their state.

Les moyens de commutation d'entrée K3 peuvent présenter un état ouvert ou un état fermé.The input switching means K3 may have an open state or a closed state.

Lorsque les moyens de commutation K3 se trouvent dans un état fermé, la source d'alimentation électrique Ve est reliée au module d'alimentation 12, et lorsque les moyens de commutation d'entrée K3 sont en état ouvert, la source d'alimentation électrique Ve est déconnectée au module d'alimentation 12.When the switching means K3 are in a closed state, the power supply source Ve is connected to the power supply module 12, and when the input switching means K3 are in the open state, the power supply source Ve is disconnected from the power supply module 12.

Selon un mode de réalisation, comme les moyens de commutation de sortie K1, K2, les moyens de commutation d'entrée K3 comportent au moins un relais.According to one embodiment, as the output switching means K1, K2, the input switching means K3 comprise at least one relay.

Dans le mode de réalisation décrit, le relais est un relais électromécanique.In the embodiment described, the relay is an electromechanical relay.

Dans d'autres modes de réalisation, les moyens de commutation d'entrée K3 peuvent comporter un relais électronique.In other embodiments, the input switching means K3 may comprise an electronic relay.

Dans le mode de réalisation décrit, un relais est monté dans chaque fil conducteur reliant la source d'alimentation électrique Ve et le module d'alimentation 12.In the embodiment described, a relay is mounted in each conductive wire connecting the power supply source Ve and the power supply module 12.

Pour générer le second signal d'alimentation Vc, le module d'alimentation 12 comporte des moyens de stockage d'énergie.To generate the second power supply signal Vc, the power supply module 12 comprises energy storage means.

Dans un mode de réalisation, les moyens de stockage d'énergie comportent un condensateur C.In one embodiment, the energy storage means comprise a capacitor C.

Dans ce mode de réalisation, les moyens de commutation d'entrée K3 sont reliés aux bornes du condensateur C.In this embodiment, the input switching means K3 are connected across the terminals of the capacitor C.

Le second signal d'alimentation Vc est pris aux bornes du condensateur C.The second supply signal Vc is taken across the capacitor C.

Le condensateur C est chargé par l'énergie délivrée par la source d'alimentation Ve lorsque les moyens de commutation d'entrée K3 sont en état fermé. Les moyens de commutation d'entrée K3 sont en état fermé lorsqu'aucune commande de mise à feu n'a été générée.The capacitor C is charged by the energy delivered by the power source Ve when the input switching means K3 are in the closed state. The input switching means K3 are in the closed state when no firing command has been generated.

Ainsi, tant qu'aucune commande de mise à feu n'a été générée, la source d'alimentation d'énergie Ve délivre de l'énergie électrique au module de commande 11, ainsi qu'au module d'alimentation 12.Thus, as long as no firing command has been generated, the power supply source Ve delivers electrical energy to the control module 11, as well as to the power supply module 12.

Pendant que le premier signal d'alimentation Vm est généré à la sortie 100 du système de commande 10, le condensateur C stocke de l'énergie délivrée par la source d'alimentation électrique Ve.While the first power supply signal Vm is generated at the output 100 of the control system 10, the capacitor C stores energy delivered by the power supply source Ve.

Une fois qu'une commande de mise à feu est générée, les moyens de commutation d'entrée K3 sont commandés en état ouvert, le module d'alimentation 12 étant ainsi déconnecté de la source d'alimentation électrique Ve.Once a firing command is generated, the input switching means K3 are controlled in the open state, the supply module 12 thus being disconnected from the power supply source Ve.

Le module d'alimentation 12 comporte en outre une première résistance R1 montée entre les moyens de commutation d'entrée K3 et le condensateur C.The power supply module 12 further comprises a first resistor R1 mounted between the input switching means K3 and the capacitor C.

Cette première résistance R1 permet de limiter le courant de charge du condensateur C.This first resistor R1 makes it possible to limit the charging current of capacitor C.

Le module d'alimentation 12 comporte en outre des moyens de protection 14 du condensateur C contre les surtensions présentes en sortie 100 du système de commande 10, provenant par exemple des fils conducteurs électriques 30.The power supply module 12 furthermore comprises means 14 for protecting the capacitor C against the overvoltages present at the output 100 of the control system 10, coming for example from the electrical conductors 30.

Dans un mode de réalisation, les moyens de protection 14 comportent une seconde résistance R2, une diode D et une inductance L.In one embodiment, the protection means 14 comprise a second resistor R2, a diode D and an inductance L.

La diode D est montée en parallèle du condensateur C, la seconde résistance R2 est montée entre la diode D et l'inductance L, l'inductance L étant reliée aux seconds moyens de commutation de sortie K2.The diode D is connected in parallel with the capacitor C, the second resistor R2 is connected between the diode D and the inductance L, the inductance L being connected to the second output switching means K2.

Les caractéristiques du condensateur C sont déterminées de façon à stocker l'énergie nécessaire pour alimenter un ensemble de détonateurs électroniques 20 pendant une période de temps prédéterminée.The characteristics of the capacitor C are determined so as to store the energy required to power a set of electronic detonators 20 for a predetermined period of time.

Dans un mode de réalisation, la période de temps prédéterminée correspond sensiblement à un temps de retard de mise à feu.In one embodiment, the predetermined period of time substantially corresponds to a firing delay time.

Dans un système de détonation comportant un ensemble de détonateurs électroniques 20, chaque détonateur électronique 20 est programmé avec un temps de retard.In a detonation system comprising a set of electronic detonators 20, each electronic detonator 20 is programmed with a delay time.

Dans un mode de réalisation, la période de temps prédéterminée correspond sensiblement au temps de retard de mise à feu maximal.In one embodiment, the predetermined period of time substantially corresponds to the maximum firing delay time.

Ainsi, l'ensemble des détonateurs électroniques 20 est alimenté par l'énergie délivrée par le condensateur C pendant la phase de mise à feu.Thus, the set of electronic detonators 20 is powered by the energy delivered by the capacitor C during the firing phase.

Le condensateur C doit être ainsi dimensionné de façon à maintenir le second signal d'alimentation Vc sur la période de temps prédéterminée correspondant au temps de retard de mise à feu maximale.The capacitor C must be so dimensioned as to maintain the second supply signal Vc over the predetermined period of time corresponding to the maximum firing delay time.

Le dimensionnement du condensateur C tient compte également du nombre de détonateurs électroniques 20 reliés à travers les fils conducteurs électriques 30 au système de commande 10.The dimensioning of the capacitor C also takes into account the number of electronic detonators 20 connected through the electrical conductors 30 to the control system 10.

A titre d'exemple nullement limitatif, dans un système de mise à feu comportant 1500 détonateurs électroniques reliés au système de commande 10 à travers les fils conducteurs électriques 30, dans lequel le temps de retard maximal est de 16 secondes, un condensateur de 0,36 F de capacité pourrait être utilisé.By way of non-limiting example, in a firing system comprising 1500 electronic detonators connected to the control system 10 through the electrical conductors son 30, in which the maximum delay time is 16 seconds, a capacitor of 0, 36 F capacity could be used.

Dans le mode de réalisation décrit, les moyens de commutation d'entrée K3 et de sortie K1, K2 sont commandés en état d'ouverture ou de fermeture de sorte que les détonateurs électroniques 20 soient toujours alimentés.In the embodiment described, the input switching means K3 and output K1, K2 are controlled in the open or closed state so that the electronic detonators 20 are always powered.

Ainsi, les seconds moyens de commutation de sortie K2 sont commandés en fermeture avant que les premiers moyens de commutation de sortie K1 soient commandés en ouverture.Thus, the second output switching means K2 are closed before the first output switching means K1 are controlled in opening.

En outre, les seconds moyens de commutation de sortie K2 sont commandés en fermeture une fois que les moyens de commutation d'entrée K3 soient commandés en ouverture.In addition, the second output switching means K2 are closed when the input switching means K3 are opened.

Par ailleurs, lorsque le module d'alimentation 12 prend la relève du module de commande 11 dans l'alimentation des détonateurs 20, c'est-à-dire au moment où les seconds moyens de commutation de sortie K2 sont commandés en fermeture (les premiers moyens de commutation de sortie K1 étant commandés ensuite en ouverture), le premier signal d'alimentation Vm (ou le signal d'alimentation de sortie Vs) et le second signal d'alimentation Vc doivent être en phase.On the other hand, when the power supply module 12 takes over from the control module 11 in the supply of the detonators 20, that is to say at the moment when the second output switching means K2 are controlled in closing (the first output switching means K1 being subsequently controlled in opening), the first supply signal Vm (or the output supply signal Vs) and the second supply signal Vc must be in phase.

La mise en phase d'un signal par rapport à un autre n'est pas détaillée ici, dès lors que la mise en oeuvre d'une telle opération est connue par un homme du métier.The phasing of a signal with respect to another is not detailed here, since the implementation of such an operation is known to a person skilled in the art.

On notera que le remplacement du premier signal d'alimentation Vm par le second signal d'alimentation Vc est mis en oeuvre après la génération de la commande de mise à feu mais avant une première détonation proprement dite d'un détonateur de l'ensemble de détonateurs 20.It will be noted that the replacement of the first supply signal Vm with the second supply signal Vc is carried out after the generation of the firing command but before a first detonation itself of a detonator of the set of detonators 20.

Pour cela, le temps de retard minimal attribué à un détonateur électronique 20 est déterminé en prenant en compte le temps de commutation des moyens de commutation de sortie K1, K2 et des moyens de commutation d'entrée K3. Ainsi, le temps de retard minimal présente une valeur suffisamment élevée pour que les moyens de commutation de sortie K1, K2 et les moyens de commutation d'entrée K3 aient changé d'état.For this, the minimum delay time allocated to an electronic detonator 20 is determined by taking into account the switching time of the output switching means K1, K2 and switching means. K3 input. Thus, the minimum delay time has a sufficiently high value that the output switching means K1, K2 and the input switching means K3 have changed state.

En résumé, selon le mode de réalisation décrit, une fois qu'une commande de mise en feu est générée par le système de commande 10, en particulier par le module de commande 11, le premier signal d'alimentation Vm est généré par les moyens de modulation 13 de sorte qu'ils soient en phase avec les second signaux d'alimentation Vc, les moyens de commutation d'entrée K3 sont commandés en ouverture afin de déconnecter la source d'alimentation électrique Ve du module d'alimentation 12, les seconds moyens de commutation en sortie K2 sont commandés en fermeture de façon à relier le module d'alimentation 12 à la sortie 100 du système de commande 10, et les premiers moyens de commutation en sortie K1 sont ensuite commandés en ouverture de sorte que le module de commande 11 (et en particulier les moyens de modulation 13) est déconnecté de la sortie 100 du système de commande 10.In summary, according to the embodiment described, once a firing command is generated by the control system 10, in particular by the control module 11, the first supply signal Vm is generated by the means 13 so that they are in phase with the second power supply signals Vc, the input switching means K3 are controlled in opening in order to disconnect the power supply source Ve from the supply module 12, the second output switching means K2 are closedly controlled so as to connect the power supply module 12 to the output 100 of the control system 10, and the first output switching means K1 are then controlled in opening so that the module 11 (and in particular the modulation means 13) is disconnected from the output 100 of the control system 10.

Ainsi, lorsque ces opérations se succèdent dans l'ordre précité, l'alimentation de l'ensemble des détonateurs électroniques 20 n'est pas interrompue lors du remplacement du premier signal d'alimentation Vm par le second signal d'alimentation Vc.Thus, when these operations follow one another in the aforementioned order, the supply of all the electronic detonators 20 is not interrupted when the first supply signal Vm is replaced by the second supply signal Vc.

Claims (13)

  1. A control system (10) for controlling at least one electronic detonator (20) generating as output (100) an output supply signal (Vs) adapted for the supply of said at least one electronic detonator (20) and generating firing commands for firing said at least one electronic detonator (20), said control system (10) comprising a control module (11) configured for generating firing commands and for generating a first supply signal (Vm),said control system (10) being characterized in that it further comprises a supply module (12) generating a second supply signal (Vc) adapted to supply said at least one electronic detonator (20), first switching means (K1) being disposed between said control module (11) and the output (100) of said control system (10), and second switching means (K2) being disposed between said supply module (12) and said output (100) of said control system (10), said switching means making it possible that said output supply signal (Vs) corresponds to said second supply signal (Vc) once a firing command for firing said at least one electronic detonator (20) has been generated, and to said first supply signal (Vm) so long as no firing command has been generated.
  2. A control system according to claim 1, characterized in that said output switching means (K1, K2) enable the replacement of said first supply signal (Vm) by said second supply signal (Vc) as output from the control system (10), once a firing command for firing said at least one electronic detonator (20) has been generated.
  3. A control system according to any one of claim 1 or 2, characterized in that the first switching means (K1) and the second switching means (K2) have an open state or a closed state, and in that once a firing command has been generated, said second switching means (K2) are put into closed state and said first switching means (K1) are put into open state once the second switching means (K2) are in closed state.
  4. A control system according to any one of claims 1 to 3, characterized in that it further comprises input switching means (K3) disposed upstream of said supply module (12).
  5. A control system according to claim 4, characterized in that the input switching means (K3) have an open state or a closed state, and in that once a firing command has been generated, said second switching means (K2) are put into closed state once said input switching means (K3) are in open state.
  6. A control system according to any one of claims 4 or 5, characterized in that it comprises an electrical supply source (Ve) connected to said supply module (12) via said input switching means (K3).
  7. A control system according to any one of claims 1 to 6, characterized in that said control module (11) comprises modulation means (13) generating said first supply signal (Vm), said modulation means (13) being configured to generate said first supply signal (Vm) in phase with the second supply signal (Vc) once a firing command has been generated.
  8. A control system according to any one of claims 1 to 7, characterized in that said supply module (12) comprises energy storage means (C), said second supply signal (Vc) being generated by said energy storage means (C).
  9. A control system according to claim 8, characterized in that said energy storage means (C) comprise a capacitor, said second supply signal (Vc) being taken at the terminals of said capacitor (C).
  10. A control system according to claim 9, characterized in that the characteristics of said capacitor (C) are determined so as to store the energy necessary to supply said at least one electronic detonator (20) for a predetermined period of time.
  11. A control system according to claim 10, characterized in that said predetermined period of time substantially corresponds to at least one firing delay time.
  12. A control system according to any one of claims 8 to 11, characterized in that said supply module (12) comprises means (14) for protection of said energy storage means (C) against the overvoltages present at the output (100) of said control system (10).
  13. A system for firing a set of electronic detonators comprising a control system in accordance with any one of claims 1 to 12, the control system (10) being connected to the set of electronic detonators (20) by means of electrically conducting wires (30).
EP16712958.4A 2015-03-04 2016-02-29 System for controlling at least one electronic detonator Active EP3265746B1 (en)

Applications Claiming Priority (2)

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FR1551823A FR3033402B1 (en) 2015-03-04 2015-03-04 SYSTEM FOR CONTROLLING AT LEAST ONE ELECTRONIC DETONATOR
PCT/FR2016/050451 WO2016139410A1 (en) 2015-03-04 2016-02-29 System for controlling at least one electronic detonator

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BR (1) BR112017018523A2 (en)
CA (1) CA2975354A1 (en)
CL (1) CL2017002190A1 (en)
CO (1) CO2017008771A2 (en)
EA (1) EA201791962A1 (en)
FR (1) FR3033402B1 (en)
MX (1) MX2017011075A (en)
PE (1) PE20171384A1 (en)
WO (1) WO2016139410A1 (en)
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CA2975354A1 (en) 2016-09-09
ZA201706360B (en) 2019-02-27
WO2016139410A9 (en) 2017-09-14
CO2017008771A2 (en) 2017-09-11
US20180347959A1 (en) 2018-12-06
AU2016227591A1 (en) 2017-10-12
BR112017018523A2 (en) 2018-04-24
EA201791962A1 (en) 2018-01-31
FR3033402B1 (en) 2017-04-07
EP3265746A1 (en) 2018-01-10
MX2017011075A (en) 2018-06-07
WO2016139410A1 (en) 2016-09-09
US10260851B2 (en) 2019-04-16
CL2017002190A1 (en) 2018-01-12
PE20171384A1 (en) 2017-09-15
FR3033402A1 (en) 2016-09-09

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