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Disinfection shoe cabinet program
The disinfection shoe cabinet is upgraded from the traditional wooden shoe cabinet. At present, there are various names of this product on the market, some are called electronic shoe cabinets, some are called electronic disinfection shoe cabinets, some are called smart electronic shoe cabinets, some are called multi-functional smart shoe cabinets, etc. There is no standardized name, but the main functions Basically, it has functions such as deodorization, sterilization, disinfection, drying, heat preservation, and intelligent control. Therefore, it is referred to as a disinfection shoe cabinet for short, and all disinfection shoe cabinets in the market are classified into two types: wooden shoe cabinets and metal shoe cabinets.
1. Development background of intelligent disinfection shoe cabinet
Many families are accustomed to self-made shoe cabinets. Its inherent disadvantages are that the space is closed and airtight, and it is easy to parasitize bacteria. At the same time, harmful substances such as benzene and formaldehyde remain in wooden products, which are harmful to human health. Traditional wooden shoe cabinets have a lot of hygienic problems and will eventually be eliminated by people.
With the development of the economy and the continuous improvement of people's living standards, people are no longer satisfied with the single storage function of traditional shoe cabinets, but are developing in a more diversified and intelligent direction. Multifunctional disinfection shoe cabinets such as intelligent control will become people's first choice, and traditional wooden shoe cabinets will be eliminated by the market. But at present, it still needs a process for the product to be accepted by the market, and the product itself still has a process of gradual improvement.
2. Main technical principles of intelligent disinfection shoe cabinet
2.1 The principle of ozone deodorization
The main components that cause odor and putrefaction in nature are ammonia, hydrogen sulfide, methyl mercaptan, dimethyl sulfide, dimethyl disulfide, etc. Ozone can chemically react with them to oxidize and decompose them into non-toxic and odorless Substances, so as to achieve the effect of deodorization and deodorization. The deodorization principle of ozone is the principle of oxidative decomposition. It does not use the unique odor of ozone itself to cover up the stench, but combines with the peculiar smell to decompose the odor and release oxygen (0). Therefore, in addition to removing peculiar smell, ozone can also improve the purity of oxygen molecules (0:) in the air.
2.2 The principle of ozone sterilization
Ozone is a strong oxidant that can oxidize and decompose the enzymes needed to decompose the glucose inside the bacteria, inactivating and killing the bacteria. And it can directly interact with bacteria and viruses, destroying their organelles, DNA and RNA, destroying the metabolism of bacteria and leading to the death of bacteria. It can also penetrate the cell membrane tissue, invade the cell, and act on the lipoprotein of the outer membrane and the lipopolysaccharide inside, causing the bacteria to undergo permeabilization, deformation, and dissolution and death. Ozone sterilization is a bacteriolysis-level method, with thorough sterilization and no residue. It can kill bacterial propagules, spores, viruses, fungi, etc., and can destroy botulinum toxin, and has a strong killing effect on mold. Due to its poor stability, ozone will quickly decompose into oxygen or single oxygen atoms, and single oxygen atoms can combine into oxygen molecules without any toxic residues. Therefore, ozone is a non-polluting disinfectant. Ozone is a gas, which can quickly permeate the entire sterilization space. There is no dead angle for sterilization, and the sterilization effect is the most thorough and obvious.
2.3 Low temperature drying principle
Using the perfect combination of PTC corrugated heaters, blowers and air ducts, a thermal circulation air system is formed inside the machine, coupled with the temperature controller to adjust the temperature, so that the internal temperature of the machine can be relatively balanced, and controlled under a certain temperature, through The constant temperature circulating air dehumidifies and dries the shoes, keeping the shoes dry and preventing the shoes from getting moldy.
2.4 Integral foaming technology
The inner and outer boxes of the disinfection shoe cabinet adopt cyclopentane foaming technology as a whole to form an insulating layer between the inner and outer parts, and the door is equipped with a magnetic sealing strip, which is completely sealed when the door is closed, so that the heat insulation and heat preservation effects are better. This technology is suitable for large-scale production enterprises. The product has just started to be processed, and it is basically all manual operations. The box is divided into multiple pieces, stamped and bent, and then assembled and welded. The foaming is manually filled with granular materials between the inner tank and the outer shell of the box. By 2012, some manufacturers had reformed the process of disinfection shoe cabinets. The box body was made of double-layer special cold-rolled boards, which were stamped and formed at one time, so that the box structure was compact and there were no obvious interfaces. The appearance of the body is uniform in color, no color difference, and easy to clean. The cabinet door is made of stainless steel glass or high-grade acrylic material, one-time injection molding, using industrial lamination technology, without adding any paint.
At present, in addition to the above methods, there are also methods of using negative ion generators, LEDs, ultraviolet lamps (in fact, ultraviolet disinfection), and adding deodorizers, perfumers, and incense for deodorization. Negative ions act as air purifiers and can remove odors from the air. LED and ultraviolet lamps can’t sterilize thoroughly, and the places where the light can’t reach can’t sterilize, and it’s harmful to the human body. However, deodorizing methods such as deodorizers, perfumers, and incense can only treat the surface, not the root cause, and cannot solve the odor. The fundamental problem of taste.
It can be seen from the above that ozone should be the most effective and currently the best method of deodorization, sterilization and disinfection, and it is also a method commonly used in the market at present. , how to grasp, and make it achieve the best effect, is the subject that every production enterprise should study and overcome.
3. Design idea of intelligent disinfection shoe cabinet
Smart furniture is the application of intelligent control technology to traditional furniture, so that the furniture has the characteristics of automation, humanization, convenience, etc., and can meet more functional needs of users. In the future development of furniture, smart furniture represents a new development direction, and will also form a new economic growth point for the furniture industry. Although smart furniture is still in the stage of conceptual design and experimental development, it has shown a strong momentum of development.
The most important part of smart furniture is the signal acquisition and control processing part, which is to convert the analog signal output from the sensor into a digital signal, calculate and process the digital signal, and display the result. The performance of FPGA chips currently on the market is already very powerful, with strong logic control and digital signal processing capabilities. At present, most of the smart furniture on the market are controlled by single-chip microcomputers or embedded electronic computers. Compared with mainstream products, the control system design of smart furniture using FPGA has the advantages of high integration, small size, large number of pins, and easy modification. , and has the advantages of short design cycle, low development cost, low risk, low power consumption, high reliability and flexible design. Moreover, when the latest system appears, it is convenient for system upgrade and system expansion. At the same time, FPGA is good at processing parallel signals, and the real-time performance of signal acquisition and processing is strong. Therefore, it is very promising and market foresight to design intelligent furniture controlled by FPGA. The following mainly discusses the intelligent shoe cabinet control system with everyone.
4. Architecture design of intelligent shoe cabinet control system
In the design, FPGA is the control and processing core of the whole system, and the relevant functional modules of the control system complete the task of signal acquisition and processing. Integrating the various functions of the shoe cabinet, the designed smart shoe cabinet must have basic functions such as sterilization, moisture removal and mildew prevention, and it must not damage the shoes in the shoe cabinet while having these functions. The block diagram of the designed intelligent shoe cabinet control system is shown in Figure 1, which mainly includes the main control center, humidity signal acquisition and processing, door opening signal acquisition and processing, disinfection, deodorization, clock, peripheral circuits and various sensors.
4.1 Shoe cabinet dehumidification
Most of the shoes placed in the shoe cabinet are leather products, which are extremely vulnerable to mold damage and mildew in a warm and humid environment with a temperature of 25°C~35°C and a relative humidity of 75%~95%. Especially in southern my country, a large part of the humidity and temperature of the weather are within this range every year. Since the power required for temperature control is too high, it is only necessary to ensure that the humidity in the shoe cabinet is not higher than 75%. Moisture-proof purpose too. After the humidity sensor performs humidity detection, the humidity signal is processed after A/D conversion. Whenever the humidity exceeds 75%, the humidity signal wet is set from 0 to 1, and the signal processing is performed by the main control center, and the dehumidification signal dry is set to 0. 1. Turn on the peripheral dehumidification circuit to dehumidify the shoe cabinet. When the relative humidity is lower than 75%, the humidity signal is set from 1 to 0, and the shoe cabinet is turned off for dehumidification.
4.2 Door open alarm, lighting
Shoe cabinets are generally placed where you can see and use them when you enter the door. Many people have the bad habit of forgetting to close the shoe cabinet door after opening the shoe cabinet to change shoes, which not only affects the appearance, but also has an unpleasant smell. The pressure sensor is used to detect whether the door is open. When the door is opened, the door open signal door is set to 1, and after being sent to the main control center for processing, the door open alarm and lighting are turned on. The alarm time lasts for 30 seconds and reminds to close the shoe cabinet door. When the open signal is set to 0, the lighting is turned off when the cabinet door is closed.
4.3 Disinfection and deodorization
The shoes cannot be placed in a relatively high temperature environment for a long time. In order to protect the shoes from damage, a low-energy electromagnetic radiation-ultraviolet radiation is used to disinfect and deodorize the shoe cabinet. When the disinfection button is manually pressed, the signal s is set to 1, and the UV is turned on by the control center. After 30 minutes, the UV is turned off, and s and c are set to 0.
4.4 clock frequency division
The input high_clk of 20MHz is frequency-divided to obtain a clock of clk_1Hz with a frequency of 1Hz. This clock period is 1s. After passing through the timer counter30, a 30s timing pulse is obtained, which is an alarm timing clock. At the same time, the clock obtained by counter30 is sent to the timer counter10 for counting, and a 5min timing pulse is obtained, which is the clock for the door opening. At the same time, the 5-min timing pulse output by the counter10 is sent to the counter6 for counting, and the 30-min timing pulse obtained after counting is used to time the UV time and dehumidification time, as shown in Figure 2.
4.5 Main control part
The working state of the smart shoe cabinet is divided into four states: disinfection, dehumidification, lighting alarm, and standby, corresponding to state1, state2, state3, and state0 respectively. The state transition diagram is shown in Figure 3. When the disinfection signal s inputs a pulse set from 0 to 1, the working state of the shoe cabinet control system is transferred from standby to disinfection state, and after 30 minutes of timing, set s to 0 and return to standby state. When the humidity signal wet is 1, the working state of the shoe cabinet changes from standby to dehumidification state2, and when wet becomes 0, the working state of the shoe cabinet changes from dehumidification to standby state0. When the door open signal door is set from 0 to 1, enter the state state3 to turn on the lighting, and after 5 minutes of timing, the working state of the shoe cabinet changes from standby to door open alarm, and when door becomes 0, the shoe cabinet working state changes from door open alarm to back to the standby state0 state. In the state of disinfection state1 and dehumidification state2, when the door signal is set from 0 to 1, the original state is suspended, and the state is first entered into state3, and then returns to the original state to continue after the state is completed. Through the conversion of these three states, the conversion control of the working state of the shoe cabinet is achieved.
5. Application of smart shoe cabinet technology
A new technology must be recognized by the market. If it is not tolerated by the market, it will be eliminated by the society. The same is true for disinfection shoe cabinets. So, how to make the sterilized shoe cabinets accepted by the market, especially by ordinary people. In fact, it can be summed up in 8 words: practical, economical, safe and convenient.
(1) Practical: Practical means that the purchased product is useful to the buyer. Because of its own characteristics, it is impossible for consumers to have an impulse to buy, such as buying high-end watches, Apple mobile phones, etc., which can show their status, and it has not become a necessity for people like refrigerators and air conditioners, and every household must buy them. According to the principle of practicality, then, how to make consumers feel practical? At present, the functions of disinfecting shoe cabinets in the market are endless, and there are everything, so that consumers do not know why. In fact, it can be summed up nothing more than deodorization, Sterilization, disinfection, drying four main functions. If there is no drying function, how can it be possible to remove moisture, dehumidify, prevent mildew, and keep warm? If there is no sterilization and disinfection, how can we talk about eradicating athlete’s foot and protecting shoes? As for the air purification function, the author thinks that it should not be used as a shoe cabinet. The function of the shoe cabinet is for storage. In order to make the shoes better stored, we have added the functions of deodorization, sterilization, disinfection and drying, so that the storage quality of the shoes has been greatly improved, and the smell on the shoes is gone. All kinds of bacteria are gone, and the wet shoes are dry. In this way, the needs of consumers can be met.
(2) Economical: Economical means economical and affordable. In layman's terms, it means cheap, but it is not all cheap. It is based on practicality, and the price should be cheap. If you buy a useless product, no matter how cheap it is, it will not reflect its value. As a manufacturer, when producing products, on the basis of ensuring practicality, try to reduce costs as much as possible.
(3) Safety: Safety as an electrical product is a national mandatory requirement. If the product is unsafe and causes personal injury, who would dare to buy your product or use your product.
(4) Convenience: The use of the product should be simple and convenient, and should not be too complicated. It is best for fools, and anyone can operate it at a glance. Or help consumers design it well, and it can be used at home after purchase. As a manufacturer of disinfection shoe cabinets, it should closely focus on its eight-character policy and four major functions, and make sufficient articles in these aspects. At the same time, this technology can also be promoted and applied to wardrobes and filing cabinets.
Summarize
In the case of power on, the shoe cabinet works in the standby state, and the signal control processing is carried out according to different sensor signals, so that the shoe cabinet works in dehumidification, mildew prevention, door opening alarm and other working states, and the length of the working state is determined by clock frequency division. Control, so as to achieve the purpose of control, so that the designed intelligent shoe cabinet control system basically meets the various needs of the shoe cabinet.
The above are the details of the smart disinfection shoe cabinet solution introduced by Shenzhen Zuchuang Microelectronics Co., Ltd. for you. If you have electronic function development needs for smart shoe cabinets, 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 IC price as soon as possible, and can also calculate PCBA quotations. We are a number of chip agents at home and abroad: Songhan, Yingguang, Jieli, Ankai, Quanzhi, realtek, with MCU, voice IC, Bluetooth IC and module, wifi module. Our development capabilities cover PCB design, single-chip microcomputer development, Bluetooth technology development, software customization development, APP customization 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 equipment, the development of Internet of Things applications, the design of smart home solutions, the development of TWS earphones, the development of Bluetooth earphone speakers, the development of children's toys, and the development of electronic education products.
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