Frequency diversity remote controlled initiation system
US7327550B2 · kind B2 · utility
8Cited by
4References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 1, 2002 |
| Grant date | Feb 5, 2008 |
| Priority date | — |
| Expiry date | Oct 19, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF42D1/055
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
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 (f1) 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.