New fire safety exit emergency light circuit

Abstract

The invention discloses a novel fire safety exit emergency light circuit, which utilizes the self-discharging characteristics of a battery to light the exit indication, and utilizes laser irradiation to check whether the emergency function of the system works normally. After the system detects that the battery is connected, the exit indicator and the emergency light head will not work when the mains power is not connected. When the mains power is connected, the exit indicator light will be on; When it is lower than 75% of the rated mains power, the exit indicator and emergency light head will be lit by the battery. When the product is working normally, use concentrated light to irradiate the photoreceptor of the product, and the product will switch from the normal working state to the emergency working state. The emergency light head is lit by the battery. This circuit structure can not only perfectly meet the various requirements of the fire emergency light standard, but also prevent the battery from reducing its power due to self-discharge, and keep the battery fully charged at all times, so as to achieve sufficient power and greatly reduce The cost of the circuit is reduced, and the original complex circuit is simplified.

Description

technical field [0001] The invention relates to the technical field of fire safety exit emergency circuit design, in particular to a novel fire safety exit emergency light circuit. Background technique [0002] In the field of electronic information, low cost, intelligence, energy saving and environmental protection have always been the goals pursued by the industry. For fire emergency lights used in public places, because they work for a long time, they need to charge the battery and light up the emergency exit instructions. It needs more electricity to maintain and consume more electricity, so it requires more energy saving, smaller charging current, smaller current to light up the emergency exit indicator, and ensures that the battery has a longer discharge time when the product is in an emergency. appears to be particularly important. And because fire emergency products are generally hung at high places, it is inconvenient to regularly detect emergency functions, so mor...

AI Technical Summary

Problems solved by technology

However, the fire emergency lights in the prior art need to charge the battery and light up the safety exit, so two currents are required. Such a working method is not only an increase in circuit cost but also a waste of energy, and cannot achieve more The purpose of low cost and less power consumption

And when regularly checking whether the emergency function is normal, since the emergency lights are usually installed on a high level, the staff need to climb up and operate manually, neither in terms of efficiency nor safety.

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