Firearm monitoring and energy harvesting from a local electromagnetic signal

1. A firearm for firearm usage monitoring, the firearm comprising:

a battery configured to power components of the firearm;

a communication interface configured to transmit data wirelessly to a connected device; and

a controller operatively coupled to a communication interface, the controller running application software configured to:

power, via the battery, the components of the firearm in a first sensing mode;

monitor, via the communication interface, density of electromagnetic radiation proximate the firearm;

harvest, in response to the electromagnetic radiation density exceeding a predetermined threshold, power from the electromagnetic radiation via a wireless-energy harvesting mechanism having a receiving antenna configured to receive a local electromagnetic signal, a rectifier configured to convert the received signal to direct current, and a DC-DC converter configured to alter voltage of the direct current to a desired voltage; and

operate, via the harvested power, the components of the firearm in a second sensing mode, the second sensing mode expending more energy than the first sensing mode.

2. The system of claim 1 , wherein the application software is further configured to increase, in response to harvesting power from the local electromagnetic signal, a data collection rate for at least one sensor coupled to the firearm.

3. The system of claim 2 , wherein the data collection rate is adjusted based on the amount of energy being harvested.

4. The system of claim 1 , wherein the power harvested from the local electromagnetic signal is combined with energy harvested from a motion of the firearm.

5. The system of claim 4 , wherein the energy harvested from the motion of the firearm derives at least in part from a recoil of the firearm.

6. The system of claim 1 , wherein the power harvested from the local electromagnetic signal is combined with energy harvested from a wearable device in proximity to the firearm.

7. The system of claim 1 , wherein the power harvested from the local electromagnetic signal is used to charge a battery in proximity to a user of the firearm.

8. The system of claim 1 , wherein the power harvested from the local electromagnetic signal is combined with energy harvested from local energy in a second radio frequency in proximity to the firearm.

9. The system of claim 8 , wherein the power harvested from the local electromagnetic signal is combined with locally stored energy.

10. The system of claim 1 , wherein the power harvested from the local electromagnetic signal is combined with energy from electromagnetic frequencies transmitted by other devices in proximity to the firearm.

11. The system of claim 1 , wherein the wireless-energy harvesting mechanism includes a circuit for harvesting electromagnetic radiation.

12. A method for operating a firearm, the method comprising: powering, via a battery, components of the firearm in a first sensing mode; monitoring, via a communication interface of the firearm, density of electromagnetic radiation proximate the firearm; harvesting, in response to the electromagnetic radiation density exceeding a predetermined threshold, power from the electromagnetic radiation via a wireless-energy harvesting mechanism having a receiving antenna configured to receive a local electromagnetic signal, a rectifier configured to convert the received signal to direct current, and a DC-DC converter configured to alter voltage of the direct current to a desired voltage; and operating, via the battery and the harvested power, the components of the firearm in a second sensing mode, the second sensing mode expending more energy than the first sensing mode.

13. The firearm of claim 12 , wherein the firearm includes a controller running application software configured to increase, in response to harvesting power from the local electromagnetic signal, a data collection rate for at least one sensor coupled to the firearm.

14. The system of claim 12 , wherein the power harvested from the local electromagnetic signal is combined with energy harvested from a motion of the firearm.

15. The system of claim 12 , wherein the power harvested from the local electromagnetic signal is combined with energy harvested from a wearable device in proximity to the firearm.

16. The system of claim 12 , wherein the power harvested from the local electromagnetic signal is used to charge a battery in proximity to a user of the firearm.

17. The system of claim 12 , wherein the power harvested from the local electromagnetic signal is combined with energy harvested from local energy in a second radio frequency in proximity to the firearm.

18. The system of claim 12 , wherein the power harvested from the local electromagnetic signal is combined with locally stored energy.

19. The system of claim 12 , wherein the power harvested from the local electromagnetic signal is combined with energy from electromagnetic frequencies transmitted by other devices in proximity to the firearm.

20. The system of claim 12 , wherein the wireless-energy harvesting mechanism includes a circuit for harvesting electromagnetic radiation.