Calibration of detonators

F - Mech Eng,Light,Heat,Weapons – 42 – D

Patent

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Details

F42D 1/045 (2006.01) F42D 1/055 (2006.01)

Patent

CA 2723970

A plurality of detonator assemblies in signal communication with a blasting machine, each detonator assembly consisting of a detonator, a storage compartment for storing programmed delay time and/or oscillation count and a countdown oscillator. A transmitter for transmitting a blast rehearsal stop start and stop signal, said signals being separated by said programmed delay time individually selected for each detonator signal. The oscillator counting the total oscillation count corresponding to said delay time. When a detonator assembly receives a FIRE command, the individual countdown oscillators countdowns the total oscillation count associated with its detonator assembly.

L'invention porte sur une pluralité d'ensembles détonateurs en communication de signal avec un exploseur, chaque ensemble détonateur consistant en un détonateur, un compartiment de stockage pour stocker un temps de retard programmé et/ou un comptage d'oscillations et un oscillateur de comptage à rebours. Un émetteur émet un signal de départ et un signal d'arrêt de répétition d'explosion, lesdits signaux étant séparés par ledit temps de retard programmé individuellement sélectionné pour chaque signal de détonateur. L'oscillateur compte le comptage d'oscillations total correspondant audit temps de retard. Lorsqu'un ensemble détonateur reçoit une instruction FEU, les oscillateurs de comptage à rebours individuels décomptent le comptage d'oscillations total associé à leur ensemble détonateur.

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