| 摘要 |
<p>An extended delay detonator assembly (1) provides a pre-selected, electronically controlled delay between an incoming non-electric impulse input signal from, e.g., a shock tube (10) or other input transmission line, and detonation of the output charge (44) the energy from which may be used to set off a blasting charge or to transfer the signal to another signal transmission line such as output shock tube (216). In another embodiment, the delay detonator is disposed in a housing (12) closed at one end and opened at the other end for coupling to the input transmission line (10), the signal from which may be amplified by a booster charge (20) mounted within the housing (12). A piezoelectric generator (30) converts the optionally amplified impulse input signal to electrical output energy. A battery-powered programmable electric delay circuit such as that contained in digital delay module (232) is activated by the electrical output from piezoelectric generator (30), counts the pre-selected delay period, at the end thereof ignites an electrically operable output charge (44).</p> |
