A triggering sequence, also called an explosive train, is a sequence of events that culminates in the detonation of explosives. This is a method many terrorist organisations use to detonate the main explosive charge, due to the fact they don't usually have a strong enough detonator for the type of explosive they are using.
For example, a match will not cause plastic explosive to explode, but it will light a fuse which will ignite a charge of gunpowder which will in turn ignite a larger type of high explosive.
Softwarebased triggering differs from the modes described above because the readings, analogue, digital, or counter, are interrogated by the PC to detect the trigger event, not in the hardware as described above.
The advantage of this mode is to permit triggering based on more complex situations, such as on a specific temperature, which was derived from the acquisition of at least two analogue measurements, plus the calculation of the measured temperature using linearization algorithms.
Specifically, when software-based triggering is employed, and the PC detects that a trigger condition has occurred, (which may be thousands of readings later than the actual occurrence of the signal), the DataShuttle/2000 driver automatically looks back to the location in memory where the actual trigger-causing measurement occurred.
A computer (10) is programmed to determine the reference data used for the triggering, preferable according to the signals from the sensors (Ci) acquired during the previous emission cycles and validated in order to check whether their form and/or arrival times are within fixed limits.
The triggering times are selected with precision in view of the particular layout chosen for the emission array in order to obtain a powerful and directional source.
It is a matter of obtaining, by selecting the triggering times of the different sources, the phasing of their main respective peaks in a certain direction.
Feeds |
Contact