Patent ID: 7509766

Claim:
On a weapon having a structure including components that engage in dynamic activity upon said weapon being operated and being of the type adapted to carry a load of ammunition, and following an automatic activity cycle of a duration typical to said weapon, discharge a round, and successively reload a next round of ammunition from said load or remain in a hold open position when the discharged round was the last one from said load, a microprocessor based assembly, including a power source and provisions to store and run programs, and being enabled at least, to track weapon activity occurring within the typical duration of said weapon automatic cycles of operation, in combination with a piezoelectric detector, adequately adapted to said weapon as to generate electrical impulse sequences induced on said detector by dynamic events including structural shock, vibration, and abrupt changes in acceleration, substantially resulting from discharging a round and from chambering another, in which provisions are made such that, upon said piezoelectric detector detecting activity on said weapon, said microprocessor executes activities conducive to determine at least if said weapon was only discharged, or if it discharged and successively reloaded, by ascertaining if within the lapse of time substantially corresponding to the typical duration of an automatic cycle of operation on said weapon, and within the sequence of detected electrical impulses thusly generated, impulses reporting only a discharge, or impulses reporting a discharge, followed timely by others reporting the reloading of a new round were present, and in which, further provisions are made such that, said microprocessor based assembly executes thereon activities for tracking count of the discharge of ammunition on said weapon, including further provisions for tracking load discharge counts and for resetting a load discharge count to default for restarting tracking a new load count upon identifying the discharge of a round with no following reload.