Orica Explosives Technology Pty Limited

Erich Nicol Meyer

Charles Michael Lownds

Dirk Hummel

Michael John McCann

An electronic blasting system () comprising a plurality of hardware components (to.n), wherein at least two of components of the plurality of hardware components () are adapted to communicate with each other over short range radio link ()

Data communication in electronic blasting systems

A blasting system includes a wireless link between a blast controller and a plurality of electronic detonators. Each detonator includes a respective electronic initiator and an explosive charge. Charge storage devices of the initiators are chargeable by a carrier of a first signal having a first frequency (f) in the order of 400 MHz-500 MHz and which is broadcasted by the blast controller. Each initiator further includes 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.

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Schoemansville, South Africa

Erich Nicol Meyer