Weapon usage monitoring system having shot count monitoring and trigger pull sensor
A system for providing discharge monitoring of a firearm includes an event detection module, a signal processing module and a trigger pull sensor assembly. The event detection module has at least one sensor that senses an acceleration and generates an acceleration signal. The signal processing module receives the acceleration signal. The signal processing module is configured to determine whether the acceleration signal is a discharge event and generate an event detection signal based on the determination and is configured to maintain a shot count of the firearm based on the determination that the event detection signal is a discharge event. The trigger pull sensor assembly senses mechanical movement of a trigger of the firearm and communicates a trigger actuation signal to the signal processing module corresponding to a position of the trigger. The event detection signal is further based on the trigger actuation signal.
1. A system for providing discharge monitoring of a firearm, the system comprising:
an event detection module having at least one sensor that senses an acceleration and generates an acceleration signal;
a signal processing module that receives the acceleration signal, the signal processing module configured to determine whether the acceleration signal is a discharge event and generate an event detection signal based on the determination, the signal processing module further configured to maintain a shot count of the firearm based on the determination that the event detection signal is a discharge event; and
a trigger pull sensor assembly that senses mechanical movement of a trigger of the firearm, the trigger pull sensor communicating a trigger actuation signal to the signal processing module corresponding to a position of the trigger, wherein the event detection signal is further based on the trigger actuation signal.
2. The system of claim 1 , further comprising:
a grip housing selectively coupled to the firearm and including an outer contoured body configured for receiving a hand of a user of the firearm, wherein the event detection module is received by the grip housing, the event detection module and grip housing collectively defining a grip module.
3. The system of claim 2 wherein the trigger pull sensor assembly further comprises:
a contact sensor disposed on the grip housing configured to move between a depressed position and an extended position;
a grip screw that threadably mates to a body of the firearm, the grip screw defining a pocket that at least partially receives the contact sensor;
a plunger assembly disposed in the grip screw and that mechanically communicates motion of the trigger into motion of the contact sensor.
4. The system of claim 3 wherein movement of the contact sensor between the depressed position and the extended position causes a circuit in the event detection module to change status indicative of actuation of the trigger.
5. The system of claim 4 wherein the contact sensor is biased toward the extended position by a contact sensor biasing member.
6. The system of claim 5 wherein the plunger assembly further comprises:
a trigger side plunger that engages the trigger;
a sensor side plunger that engages the contact sensor; and
a plunger biasing member disposed intermediate the trigger side plunger and the sensor side plunger and that biases the trigger side plunger toward the plunger and biases the sensor side plunger toward the contact sensor.
7. The system of claim 6 wherein rotation of the trigger causes the plunger assembly to translate away from the contact sensor such that the bias of the contact sensor biasing member overcomes the bias of the plunger biasing member such that the contact sensor moves from the depressed position to the extended position.
8. The system of claim 2 wherein the event detection module further comprises an event detection module housing that includes a USB interface configured to selectively couple with a device that (i) charges a battery of the event detection module and (ii) one of sends and receives data between the event detection module and the device.
9. The system of claim 8 wherein the event detection module is configured to communicate wirelessly to a server device, the event detection module further comprising a user-operated switch that selectively disables the wireless communication to the server device.
10. The system of claim 9 wherein the event detection module housing further comprises an illumination member that selectively illuminates based on a position of the user-operated switch to convey a wireless communication status.
11. The system of claim 10 wherein the event detection module housing includes a cover configured to move between an open position wherein access to the USB interface and user-operated switch is permitted and a closed position wherein access to the USB interface and the user-operated switch is inhibited.
12. The system of claim 11 wherein the sensor is an audio sensor and wherein the event detection signal is generated based on an audible input received by the audio sensor.
13. The system of claim 1 wherein the sensor is one of an accelerometer, a gyroscope, a magnetometer, a geolocation sensor, a moisture sensor, a pressure sensor, shock sensor a piezoelectric sensor, a resistivity sensor and an audio sensor.
14. The system of claim 1 , wherein the event detection module further comprises:
a safety selector switch sensor that communicates with a safety switch configured on the firearm, the safety selector switch communicating a safety switch signal to the signal processing module corresponding to a position of the safety switch, wherein the event detection signal is further based on the safety switch signal.
15. The system of claim 1 wherein the event detection module is configured on a rail of the firearm.