Intelligent air purifying LED advertising lamp box and control method thereof

Abstract

The invention discloses an intelligent air purifying LED advertising lamp box. The intelligent air purifying LED advertising lamp box is characterized in that a photocatalyst nano-material is sprayed on the glass surface of the LED advertising lamp box. The photocatalyst nano-material absorbs luminous energy emitted by an LED light source having a wavelength of 380 nm, and the surface of the photocatalyst nano-material is excited to generate electrons (e-) and holes (h+). A tin oxide semiconductor gas sensor and a peripheral circuit thereof are employed to form a high-sensitivity air quality detector. A high-light-transmittance 380 nm filter, a light sensitive resistor and a peripheral circuit are employed to form an ultraviolet light leakage detector. On the intelligent control aspect, an embedded single-chip microcomputer, a wireless Bluetooth technology and a PWN dimming technology are mainly employed to connect various terminal devices. A working state indicating lamp can display the air quality degree visually and dynamically. When the ambient air pollution degree detected by an air quality sensor reaches preset upper and lower limiting values, the single-chip microcomputer emits a PWN signal, turns on and adjusts an ultraviolet light LED module, and adjusts the luminous intensity of the ultraviolet light LED module, and therefore the response time and intensity of the photocatalyst coating can be controlled, and air can be automatically purified.

Description

[0001] Technical field: [0002] The invention relates to the technical field of photocatalysts, in particular to an intelligent air-purifying LED advertising light box and a control method thereof. [0003] Background technique: [0004] Photocatalyst is a kind of nanoscale TiO 2 It is the general term for photo-semiconductor materials with photocatalytic function. It is the most ideal material for environmental pollution control in the world. Under the action of light, photocatalyst will produce a photocatalytic reaction similar to photosynthesis, and has a strong catalytic degradation function. It can oxidize and decompose various organic compounds and some inorganic substances into water and carbon dioxide; it can also destroy the cell membrane of bacteria and solidify the protein of viruses, decompose the toxins released by bacteria or fungi, and perform harmless treatment, so it has extremely strong sterilization , deodorization, antifouling and air purification function...

AI Technical Summary

Problems solved by technology

[0005] The current photocatalyst materials are excited by the ultraviolet spectrum in energy-saving lamps / fluorescent lamps. Since LEDs have gradually replaced traditional energy-saving lamps as energy-saving light sources, it has become a development trend to use LED lights to excite photocatalyst materials, but LED lamps do not have ultraviolet spectrum. Therefore, in the lighting occasions of ordinary LED lamps that do not produce ultraviolet light, traditional photocatalyst materials cannot be used to control the environment. To produce LED advertising light boxes that can use photocatalysts, it is necessary to modify traditional photocatalyst materials to broaden the scope of photocatalysts. The light response range enables it to adapt to more light sources and better exert its photocatalytic effect. There is currently no such technical disclosure

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