Weapon usage monitoring system having discharge event monitoring based on movement speed

A method for determining an operational status of a firearm based on a discharge event, the method comprising:

• receiving, by an event detection module, a signal indicative of a plurality of accelerations sensed by at least one inertial measurement unit (IMU);
• determining a sample shot profile based on the signal;
• comparing the sample shot profile to a baseline shot profile representative of a properly functioning firearm, the baseline shot profile comprising:
• a first peak at a first time representing initial discharge of the firearm wherein a bolt of the firearm moves from an initial forward position;
• a second peak at a second time, subsequent to the first time, representing the bolt engaging a rear buffer of the firearm;
• a third peak at a third time, subsequent to the second time, representing the bolt returning to the forward position;
• determining whether the sample shot profile includes all of the first peak, the second peak and the third peak;
• and
• determining a failed operational status of the weapon based on a determination that at least one of the first, second and third peaks are missing.

A method for determining an operational status of a firearm based on a discharge event, the method comprising:

• measuring a first acceleration on the firearm at a first time representing initial discharge of a first discharge event of the firearm;
• measuring a second acceleration on the firearm at a second time representing initial discharge of a second discharge event of the firearm;
• calculating a measured shot separation of first and second accelerations between the first and second times;
• comparing the measured shot separation to at least one shot separation threshold;
• assigning a speed of a movement member in the firearm based on the comparing;
• and
• determining the operational status of the firearm based on the assigned speed.