Abstract

Detonator spool including at least one body configured to receive a cable wound around the body, the body including at least one housing configured to receive a primer, an electronic control module housing configured to receive an electronic control module, and a bore forming a hub configured to rotate the body of the spool; and detonator including such a spool.

IPC Classes  ?

• F42D 1/045 - Arrangements for electric ignition

Abstract

A method for installing a set of electronic detonators in blast holes of a mining face includes the following steps: connecting detonators, charged into the blast holes, to a movable test device; receiving, by the movable test device, a message sent by each detonator; determining, from that message, a set of values, representing the total number of detonators connected to the movable test device; sending, to one or more detonators of the set, a data set to store including the set of values representing the total number of detonators connected to the movable test device; and storing the data set in the memory of one or more detonators of the set of electronic detonators. Use for later verification of the connection of the detonators before firing.

IPC Classes  ?

• F42D 1/055 - Electric circuits for blasting specially adapted for firing multiple charges with a time delay
• F42D 3/04 - Particular applications of blasting techniques for rock blasting

Abstract

A wireless electronic detonator includes an energy source and functional modules. A first switching switch is provided between the energy source and the functional modules, making it possible to connect or not connect the energy source to the functional modules. A control module for controlling the first switching means includes a module for recovering radio energy configured to receive a radio signal from a control console, to recover the electric energy in the radio signal received, to generate an energy recovery signal (VRF) representative of the level of electric energy recovered, and to generate as output a control signal (VOUT) as a function of the recovered energy, the control signal controlling the first switch.

IPC Classes  ?

• F42D 1/055 - Electric circuits for blasting specially adapted for firing multiple charges with a time delay
• F42D 5/00 - Safety arrangements
• F42B 3/12 - Bridge initiators
• F42C 13/04 - Proximity fuzesFuzes for remote detonation operated by radio waves
• F42C 15/42 - Arming-means in fuzesSafety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected electrically from a remote location, e.g. for controlled mines or mine fields
• F42C 11/00 - Electric fuzes
• F42B 3/10 - Initiators therefor

Abstract

A fire control unit includes a control module and first terminals that are designed to receive a firing line to which a set of electronic detonators is linked additionally includes second terminals that are designed to receive a synchronization line to which a second fire control unit is linked, and a switch that may be configured according to multiple configurations such that the controller may be connected to or disconnected from the first terminals or the second terminals, respectively, and that the first terminals and the second terminals may be connected to or disconnected from one another.

IPC Classes  ?

• F42D 1/055 - Electric circuits for blasting specially adapted for firing multiple charges with a time delay

Abstract

Disclosed is a method for firing an electronic detonator including a power storage unit including receiving, via the electronic detonator, a firing order. The following steps are implemented as long as the delay time associated with the electronic detonator has not elapsed since the reception of the firing order: measuring power stored in the power storage unit, and firing the electronic detonator when the measured stored power is less than or equal to a predetermined power.

IPC Classes  ?

• F42D 1/05 - Electric circuits for blasting
• F42B 3/12 - Bridge initiators
• F42C 11/06 - Electric fuzes with time delay by electric circuitry
• F42D 1/055 - Electric circuits for blasting specially adapted for firing multiple charges with a time delay

Abstract

A system for triggering includes 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) includes an electronic synchronization 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 system is suitable for use in triggering a plurality of electronic detonator assemblies (11) according to a single blasting pattern.

IPC Classes  ?

• F42D 1/05 - Electric circuits for blasting
• F42D 1/06 - Relative timing of multiple charges
• F42D 1/055 - Electric circuits for blasting specially adapted for firing multiple charges with a time delay

Abstract

det) 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 the 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 corresponding method is also described.

IPC Classes  ?

• H04Q 5/22 - Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange with indirect connection, i.e. through subordinate switching centre the subordinate centre not permitting interconnection of subscribers connected thereto
• F42D 1/05 - Electric circuits for blasting
• F42D 1/055 - Electric circuits for blasting specially adapted for firing multiple charges with a time delay
• F23Q 7/02 - Incandescent ignitionIgnition using electrically-produced heat, e.g. lighters for cigarettesElectrically-heated glowing plugs for igniting solid fuel
• F42B 3/00 - Blasting cartridges, i.e. case and explosive

Abstract

A pyroelectronic detonator (1) includes an electronic circuit for at least controlling the detonator ignition by supplying igniting current to an electrothermal bridge (4) and at least one electronic shunting element (7) directly connected to the bridge (4), wherein the shunting element (7) is controllable between the closed low-electric resistance state of the shunt and the open high electric resistance state thereof and the electronic circuit (2) controls the states. The shunt is constructed in such a way that it can be monostable and bistable.

IPC Classes  ?

• F42B 3/182 - Safety initiators resistant to premature firing by static electricity or stray currents having shunting means