Hazardous area lighting with emergency power back up and wireless communications

A luminaire node included in a plurality of nodes which utilize mains power to transmit and receive process control messages via a wireless network to thereby control an industrial process, the luminaire node comprising:

• an illumination source energized by mains power;
• and
• an energy storage device configured to, during a loss of mains power, provide power to energize the illumination source, and to transmit and receive the process control messages via the wireless network to thereby control the industrial process,
• the luminaire node configured to:
• monitor the energy storage device to determine an indication of a health status associated with the energy storage device;
• and
• send, via the wireless network, messages including the indication of the health status associated with the energy storage device.

A method of testing an emergency power source for a luminaire node that is a node of a wireless network utilized by a process control system, the method comprising:

• utilizing, by a luminaire node that is a node of a wireless network utilized by a process control system, mains power to (i) route process control messages utilized by the process control system via the wireless network to thereby control an industrial process, and (ii) at least one of energize an illumination source of the luminaire node or maintain communications with another luminaire;
• storing, by the luminaire node, energy in an energy storage device configured to, during a loss of mains power, provide power to (i) route process control messages utilized by the process control system via the wireless network to thereby control the industrial process, and (ii) at least one of energize the illumination source of the luminaire node or maintain communications with another luminaire;
• initiating, by the luminaire node, a self-testing routine to test the energy storage device of the luminaire node;
• and
• transmitting, from the luminaire node to an end-user device, a set of results from the self-testing routine.