EMERGENCY LIGHTING DRIVER WITH PROGRAMMABLE OUTPUT POWER

摘要

An emergency lighting driver (100, 200, 400) includes: a power translation circuit (120, 220, 421/423/425) which receives input power from an emergency power source (10) and supplies output power to a load (20); and a programmable control device (140, 240) which controls the power translation circuit in response to a voltage feedback signal and a current feedback signal to cause the output power supplied to the load to have a programmed power output profile (302, 304), wherein the programmed power output profile is a function of time, temperature, the type of energy source employed for the emergency power source, the amount of remaining energy stored in the emergency power source, and/or the occupancy of an area in which the emergency lighting driver is located.

主权项

1. An emergency lighting driver, comprising:
a power translation circuit configured to receive input power from an emergency power source and to supply output power to a load comprising one or more lighting devices; a voltage monitor configured to monitor in real time a voltage across the load and in response thereto to produce a voltage feedback signal; a current monitor configured to monitor in real time a current through the load and in response thereto to produce a current feedback signal; and a programmable control device configured to be programmed to control the power translation circuit in response to the voltage feedback signal and the current feedback signal to cause the output power supplied to the load to have a programmed power output profile, wherein the programmed power output profile is a function of at least one of: time, a temperature, a type of energy source employed for the emergency power source, an amount of remaining energy stored in the emergency power source, and an occupancy of an area in which the emergency lighting driver is located.