Emergency lighting circuit and emergency lighting system

Abstract

An emergency lighting circuit comprises a light-emitting diode (LED) lamp panel module, a regulating management module, a control module, a power supply module and a dimming module. The power supply module is used for converting external alternating current to direct current required by the emergency lighting circuit, and a power supply output end is connected with the control module. The regulating management module is connected with the control module and used for supplying stable control voltage to the control module when the external alternating current normally supplies electricity. The control module is connected with the LED lamp panel module and used for supplying working voltage to the LED lamp panel module. The input end of the dimming module is connected with the output end of the LED lamp panel module, the output end of the dimming module is connected with input end of the LED lamp panel module, and the dimming module is used for regulating brightness of the LED lamp panel module. The invention further discloses an emergency lighting system. In power failure, an emergency lamp of an embodiment of the emergency lighting circuit and the emergency lighting system responds immediately to give play to usage of emergency lighting, brightness of the lamp can be regulated according to application occasions, and use time of the emergency lamp is prolonged.

Description

technical field [0001] The invention relates to the application field of electronic technology, in particular to an emergency lighting circuit and an emergency lighting system. Background technique [0002] There are several ways to dim the existing lighting lamps: [0003] Thyristor dimming: the circuit itself reduces the conduction angle of the current. No matter how the circuit behind the thyristor is designed, it is impossible to make the current waveform at the power inlet into a complete sine wave. The thyristor dimming LED light bulbs must add some capacitive buffer circuits to avoid flickering when the light bulb is dimmed. In addition, the thyristor dimmer is an energy-saving device on the surface, but it is not, because although the silicon controlled dimmer can reduce the power consumption of incandescent lamps, it does not mean that it can also be used to dim LED bulbs. power saving. This is because LED bulbs are a small load on traditional silicon-controlled ...

AI Technical Summary

Problems solved by technology

The disadvantage is that the cost is high, there is no uniform specification, and it can only be used for high-end residential buildings

[0005] EZ dimming: EZ dimming can realize four levels of dimming, 100%, 60%, 40%, 20%, can not achieve standby, if you want to achieve dimming and emergency, it is not very perfect

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