F - Mech Eng,Light,Heat,Weapons – 42 – D
Patent
F - Mech Eng,Light,Heat,Weapons
42
D
F42D 1/055 (2006.01)
Patent
CA 2460966
A blasting system (10) comprises a wireless link (18) between a blast controller (12) and a plurality of electronic detonators (22.1 to 22.n). Each detonator comprises a respective electronic initiator (24) and an explosive charge (26). Charge storage devices of the initiators are chargeable by a carrier of a first signal having a first frequency (f1) in the order of 400 MHz - 500 MHz and which is broadcasted by the blast controller. Each initiator further comprises logic circuitry driven by a clock signal which is derived from the first signal and having a clock frequency of about 4 kHz, which is substantially less than the first frequency.
Un système (10) d'abattage aux explosifs comprend une liaison sans fil (18) entre un déclencheur d'explosions (12) et plusieurs détonateurs électriques (22.1 à 22.n). Chaque détonateur comprend un initiateur électronique correspondant (24) et une charge explosive (26). Les dispositifs de stockage de charge des initiateurs sont chargés par la porteuse d'un premier signal ayant une première fréquence (f¿1?) de l'ordre de 400 MHz à 500 MHz, émis par le déclencheur d'explosions. En outre, chaque initiateur comprend un circuit logique piloté par un signal d'horloge qui est dérivé du premier signal et possède une fréquence d'horloge d'environ 4 kHz, ce qui est sensiblement inférieur à la première fréquence.
Lownds Charles Michael
Meyer Erich Nicol
Goudreau Gage Dubuc
Orica Explosives Technology Pty Limited
Smi Technology (pty) Limited
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