Fire prevention in a network device with redundant power supplies

摘要

A device may include multiple power supplies that are cooled by a system fan. The power supplies may be cross-connected to supply power to one another and the device may monitor temperatures of the power supplies. Based on the temperatures of the power supplies, the device may determine whether any of the power supplies are likely to be on fire. The device may shut off the fan when a power supply is determined to be likely to be on fire.

主权项

1. A device comprising:
a first power supply to generate power for the device,
the first power supply including:
a first temperature sensor to measure a temperature of the first power supply, anda first communication component to transmit the measured temperature of the first power supply; a second power supply to generate power for the device,
the second power supply including:
a second temperature sensor to measure a temperature of the second power supply, anda second communication component to transmit the measured temperature of the second power supply,power signals from the first power supply and the second power supply being cross-connected with one another, in the device, to redundantly power the first temperature sensor, the first communication component, the second temperature sensor, and the second communication component; at least one fan, located within the device and external to the first power supply and the second power supply; and a fan control component to:
receive the measured temperature of the first power supply and the measured temperature of the second power supply as measured temperatures,determine, based on the measured temperatures, whether one of the measured temperatures includes a temperature value indicating that the first power supply or the second power supply is likely to be experiencing a fire, andshut off operation of the at least one fan when one of the measured temperatures includes the temperature value indicating that the first power supply or the second power supply is likely to be experiencing a fire.