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Sterilization package solution
1. The power supply mode of the sterilization and disinfection package
USB interface: external adapter, Micro USB.
Power supply lithium battery: 2000mAh, 3.7v;
2. Scheme description of ultraviolet sterilization package
1. One-key sterilization setting
After plugging in the external link mobile power supply and detecting that the magnetic switch is closed, click the disinfection button to start the countdown (3 minutes) for quick disinfection, and the button light will have a marquee effect. After disinfection, the light is always on, and the buzzer reminds. For the specific number of lights and sound prompts, refer to the prototype.
2. Magnetic switch
After the disinfection bag detects that the magnetic switch is turned on, it must turn off the disinfection light. After it is closed again, the opening time will recalculate the disinfection time.
Only when the magnetic switch is turned off, can the disinfection lamp be activated to start disinfection.
3. Light indication
The green light is always on when it is powered on, and the green marquee lights are displayed when it is working. For the specific number of lights, refer to the 4 LED lights of the prototype.
4. LED UV light board
There are six in total, one on each side of the bag and three light panels on the bottom. (The main board of the switch button refers to the prototype)
The light boards on both sides, each light board has 3 LED lights, the distance between the lights is 4cm, and it is an equilateral triangle (PCB with rounded corners).
The bottom is a rectangular row, each light board has three LED lights (PCB with rounded corners), and the light distance is 6.5CM.
5. PCBA needs to pass static electricity 8000
3. Extended reading: Principle of UV disinfection technology
Ultraviolet rays are between the visible light band and X-rays. According to the wavelength, ultraviolet rays can be subdivided into near ultraviolet (UVA: 320~400nm), medium ultraviolet (UVB: 280~320nm), deep ultraviolet (UVC: 200~280nm) and vacuum Ultraviolet (VUV: 10~200nm), of which the ultraviolet energy in the UVC band is the highest, but because of its shortest wavelength, it is absorbed in the atmosphere, resulting in serious attenuation, and there is almost no ultraviolet light in this band in the near-Earth solar spectrum. Known as the "sun-blind" UV band.
The mechanism of inactivation of microorganisms by ultraviolet rays is not complicated. It mainly uses the absorption of ultraviolet rays by the nucleic acid of microorganisms to destroy their nucleic acid functions and stop the reproduction of microorganisms, thereby achieving disinfection and purification. It should be pointed out that not the entire ultraviolet band has an inactivation function against microorganisms, and only the ultraviolet rays located in the 240-260mn interval in the UVC band are easily absorbed by bacteria and effectively act on the DNA of bacteria, interfering with their normal replication, resulting in Bacteria die, while UVA and UVB are outside the range of microbial absorption peaks, so the sterilization efficiency is very low, and they belong to the ultraviolet part that is not effective for disinfection.
There are no chemicals involved in the reaction during the UV disinfection process, and no disinfection by-products are produced. The data show that under the UVC irradiation intensity condition of 30mW/cm2, it is possible to achieve close to 100% inactivation of most bacteria in the time of 1s. Therefore, ultraviolet disinfection technology is a physical disinfection method, which has the advantages of broad-spectrum efficiency, fast and convenient, environmentally friendly and harmless, simple and practical, and easy to operate.
The application of ultraviolet light in the field of disinfection has a long history. As early as the 19th century, the research of Downes and BluntE mentioned that ultraviolet light has the effect of disinfection and sterilization. The Danish scientist Finsen then applied ultraviolet light to the field of medical health. In 1903, he was awarded the Nobel Prize in Physiology or Medicine. The above shows that ultraviolet disinfection and sterilization technology has long been recognized and applied by human beings. The "New Coronavirus Pneumonia Prevention and Control Plan" mentioned that the new coronavirus is sensitive to ultraviolet rays and heat. Therefore, in the prevention and control of the epidemic, in addition to chemical disinfection technologies such as medical alcohol and chlorine-containing disinfectants, ultraviolet disinfection technology, one of the physical disinfection methods, is also recognized by relevant agencies.
At present, the application scenarios of ultraviolet disinfection technology are mainly in specific places such as factories and hospitals, and it is not popular in families. In addition to the impact of objective factors such as the volume of ultraviolet disinfection equipment, concerns about photobiological safety are also an important reason that affects and limits the application of such products. This concern is primarily due to the potential damage to human eyes and skin from UV radiation. It should be pointed out that under the premise of ensuring a safe dose, ultraviolet rays are difficult to cause damage to human skin, and are also beneficial to human health under certain conditions. For example, ultraviolet radiation in sunlight can promote the production of vitamin D in the human body, so Encourage infants and young children to get some exposure to the sun, but excessive exposure to the sun can lead to darkening of the skin and even burns. To sum up, we believe that in actual use, it is necessary to combine the characteristics of the ultraviolet light source and the product description, and use the ultraviolet disinfection technology scientifically and standardizedly. Under the premise of meeting the safe dosage, ultraviolet disinfection method is feasible and beneficial. In addition, with the help of solid-state light sources such as small size, easy integration, and fast switching, combined with mature sensing technology and control technology, it can effectively avoid safety hazards caused by improper use of ultraviolet rays. Therefore, under the premise of ensuring safety and reliability, UV disinfection technology can be fully utilized to serve human beings.
In the process of inactivating microorganisms, it is mainly the ultraviolet rays of the 240-260nm band that work. Common UV disinfection products are mainly based on the ultraviolet light output by low-pressure mercury lamps. With the continuous development of nitride material technology, UV LEDs based on nitrides with high A1 composition have attracted attention. By comparing the characteristics of the two light sources, it is helpful to understand the performance difference between the solid-state light source and the ultraviolet mercury lamp in the field of disinfection.
The above are the details of the sterilization package solution introduced by Shenzhen Zuchuang Microelectronics Co., Ltd. for you. If you have electronic function development needs for sterilizers and UV sterilizers, you can rest assured to entrust them to us. We have rich experience in customized development of electronic products, and can evaluate the development cycle and material prices as soon as possible. We are a number of chip agents at home and abroad, including MCU, voice IC, Bluetooth IC and modules, wifi modules. Our development capabilities cover PCB design, single-chip microcomputer development, software custom development, APP custom development, WeChat official account development and other hardware and software design. It can also undertake the research and development of smart electronic products, the design of household appliances, the development of beauty and hairdressing equipment, the development of Internet of Things applications, the design of smart home solutions, the development of TWS solutions, the development of Bluetooth audio, the development of children's toys, and the development of electronic education products.
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