Fire alarm system powering a wireless building network

1. A wireless infrastructure component for integration with a building fire system, the wireless infrastructure component comprising:

a first mounting interface configured to physically couple to a mounting surface and comprising a first power connector configured to receive power from the building fire system;

a second mounting interface configured to physically couple to a fire system component and comprising a second power connector configured to provide power to the fire system component and

a wireless communications interface electrically coupled between the first power connector and the second power connector and configured to use the power from the building fire system to conduct wireless communications with one or more wireless devices.

2. The wireless infrastructure component of claim 1 , wherein the fire system component is a fire notification device or a fire detection device of the building fire system.

3. The wireless infrastructure component of claim 1 , wherein:

the fire system component comprises a third mounting interface configured to physically couple to the mounting surface; and

the first mounting interface of the wireless infrastructure component is configured to emulate the third mounting interface to enable the wireless infrastructure component to be physically coupled to the mounting surface.

4. The wireless infrastructure component of claim 3 , wherein

the mounting surface comprises a fourth mounting interface configured to physically couple to the third mounting interface of the fire system component; and

the second mounting interface of the wireless infrastructure component is configured to emulate the fourth mounting interface to enable the wireless infrastructure component to be physically coupled to the third mounting interface of the fire system component.

5. The wireless infrastructure component of claim 1 , wherein the mounting surface is part of the fire system component.

6. The wireless infrastructure component of claim 1 , wherein the wireless infrastructure component comprises a control board configured to:

electrically couple the wireless communications interface to the first power connector;

determine a state of the building fire system; and

selectively provide the power from the building fire system to the wireless communications interface based on the state of the building fire system.

7. The wireless infrastructure component of claim 6 , wherein the state of the building fire system is a battery backup state and wherein the control board is configured to:

determine that the power from the building fire system is being received and that the power is not from a backup battery of the building fire system; and

operate the wireless infrastructure component and the fire system component on the power from the building fire system in response to determining that the power from the building fire system is not from the backup battery.

8. The wireless infrastructure component of claim 1 , wherein the wireless infrastructure component comprises at least one of a wireless mesh node, a wireless repeater, a wireless occupancy sensor, or a wireless HVAC sensor that receives and sends signals via wireless network.

9. The wireless infrastructure component of claim 1 , wherein the power from the building fire system is a wired input from a fire panel Initiating Device Notification Appliance Circuit (IDNAC) bus.

10. A building fire system comprising:

a fire system component configured to operate on power from the building fire system;

a wireless infrastructure component configured to:

physically couple to a mounting surface via a first mounting interface, the first mounting interface comprising a first power connector configured to receive power from the building fire system;

physically couple to the fire system component via a second mounting interface, the second mounting interface comprising a second power connector configured to provide power to the fire system component; and

conduct wireless communications with one or more wireless devices using the power from the building fire system via a wireless communications interface electrically coupled between the first power connector and the second power connector.

11. The building fire system of claim 10 , the wireless infrastructure component further configured to:

detect a loss of power from the building fire system;

determine whether an amount of energy in a backup battery of the fire system component is sufficient to power both the fire system component and the wireless infrastructure component; and

shut down the wireless infrastructure component in response to determining that the amount of energy in the backup battery is insufficient to power both the fire system component and the wireless infrastructure component.

12. The building fire system of claim 10 , wherein the wireless infrastructure component comprises:

the first mounting interface configured to physically couple to the mounting surface and comprising the first power connector configured to receive the power from the building fire system; and

the second mounting interface configured to physically couple to the fire system component and comprising the second power connector configured to provide the power to the fire system component.

13. The building fire system of claim 12 , wherein:

the fire system component comprises a third mounting interface configured to physically couple to the mounting surface; and

the first mounting interface of the wireless infrastructure component is configured to emulate the third mounting interface to enable the wireless infrastructure component to be physically coupled to the mounting surface.

14. The building fire system of claim 10 , wherein the fire system component comprises: a rear face configured to receive the power from the building fire system; and a front face configured to physically couple to the wireless infrastructure component and provide the power from the building fire system to the wireless infrastructure component.

15. A method for powering a wireless infrastructure component using power from a building fire system, the method comprising:

operating a fire system component on the power from the building fire system;

physically coupling the wireless infrastructure component to a mounting surface via a first mounting interface comprising a first power connector configured to receive power from the building fire system;

physically coupling the wireless infrastructure component to the fire system component via a second mounting interface comprising a second power connector configured to provide power to the fire system component; and

conducting wireless communications with one or more wireless devices using the power from the building fire system via a wireless communications interface electrically coupled between the first power connector and the second power connector.

16. The method of claim 15 , the method further comprising:

detecting a loss of the power from the building fire system;

determining whether an amount of energy in a backup battery is sufficient to power both the fire system component and the wireless infrastructure component; and

shutting down the wireless infrastructure component in response to determining that the amount of energy in the backup battery is insufficient to power both the fire system component and the wireless infrastructure component.

17. The method of claim 15 , wherein the wireless infrastructure component comprises at least one of a wireless mesh node, a wireless repeater, a wireless occupancy sensor, or a wireless HVAC sensor that receive and send signals via wireless network.

18. The method of claim 15 , wherein the fire system component is a fire suppression device, a fire notification device in a fire notification loop, or a fire detection device in a fire detection loop of the building fire system.

19. The method of claim 18 , wherein a wired connection of the wireless infrastructure component to the fire notification loop or the fire detection loop is an auxiliary connection.