A light-emitting system of LED long afterglow device and its control method

Abstract

A lighting system for LED long afterglow devices, including a direct power supply (1), an energy storage power supply (2), a switching power supply controller (3), a drive control circuit (4), a control module (5), and an LED long afterglow light emitting device (6) The charge and discharge control circuit (7) is connected through lines as required; it has both the light-emitting function of a conventional LED and the light-emitting function of a long afterglow material. The purpose of energy saving is achieved by intermittently supplying power to the LED long afterglow light emitting device (6); by classifying and detecting the capacity of the energy storage power supply (2) and adopting the corresponding cycle and duty ratio or power to the LED long afterglow light emitting device (6) ) power supply, which maximizes the luminous delay of the luminous system and the afterglow brightness of the long afterglow material, thereby improving the luminous security, especially in military applications.

Description

Technical field: [0001] The invention relates to the technical field of special lighting, in particular to a light-emitting system of an LED long afterglow device and a control method thereof. technical background: [0002] With the needs of China's economic growth and social development, the country pays more and more attention to and continuously strengthens the investment and construction of public and national defense undertakings, including high-speed rail, aircraft, surface ships, submarines and other equipment. The number of public facilities such as tunnels and culverts, high-speed rail stations, airports, military bases, emergency shelters, and underground civil air defense projects is increasing, and their volume is also increasing. In these equipment or places, in consideration of safety and security, in addition to conventional means, the lighting in between must meet the rigid requirements of uninterrupted lighting and the rigid requirements of emergency lightin...

AI Technical Summary

Problems solved by technology

[0004] 1) Due to the aging or damage of the energy storage power supply, or sometimes the energy storage power supply is not enough, it is often impossible to ensure the normal operation of the emergency lighting system

[0005] 2) Partial damage to the above-mentioned equipment or places, such as fire, flood, war damage, etc. will easily lead to paralysis of the lighting system

[0006] 3) As the lighting fixtures are turned on all night and accumulated over time, not only a huge amount of energy is consumed, but also due to the high working temperature caused by long-term operation, the actual service life of the lighting fixtures is much less than the expected life

Traditional military lighting equipment simply relies on electricity to emit light, but it is still fully exposed in front of the enemy's infrared thermal imager, and can only be reduced to the enemy's target

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