Firearm Shot Counter Using Electromagnetic Induction and Dual Sensors

The device uses a first sensor to detect a priori phenomena (hammer movement, trigger press, safety lever movement) that occur before the shot is fired. This preliminary detection allows the electronic circuit to be activated in advance and enables accurate discrimination between different shot types by analyzing the specific movement patterns before recoil occurs, rather than relying solely on a posteriori recoil acceleration.

The device uses the weapon's own operational energy (kinetic energy from hammer movement, trigger press, or safety lever movement) to energize the electronic circuit through electromagnetic induction. A magnet coupled to a moving part moves within a coil to generate the required electrical energy, making the device self-powered and eliminating battery-related failures and lifespan limitations.

The device can be activated by multiple different a priori phenomena: hammer movement, trigger press, or safety lever movement. This multi-functionality ensures that the device can operate reliably under various firing conditions, including cases where recoil is insufficient, by providing multiple independent pathways to energize the electronic circuit.

The device detects dry-firing actuations by sensing the hammer movement or trigger press that occurs before the shot would be fired. Since these a priori phenomena occur regardless of whether ammunition is present, the device can accurately count dry-fires without requiring complex additional sensors, by simply detecting the absence of the expected a posteriori recoil signal while still registering the preliminary activation event.