Garbage can with disinfection and sterilization functions and disinfection method thereof

Abstract

The invention discloses a garbage can with disinfection and sterilization functions and a disinfection method thereof, and relates to the technical field of garbage cans, the garbage can comprises a garbage can body, a can cover is hinged to the upper surface of the garbage can body, and an ultraviolet disinfection lamp is installed on the inner wall of the can cover. According to the garbage can, through an innovative garbage can design and disinfection method, accurate monitoring of bacteria and viruses in the garbage can is achieved, disinfection is conducted timely and effectively according to the monitoring result, the garbage can utilizes a novel composite sensor, the variety and content of various common bacteria and viruses can be accurately detected, and the garbage can is convenient to use. When the content of bacteria and viruses reaches a certain concentration, the ultraviolet disinfection lamp located on the can cover is automatically started for disinfection, energy waste can be avoided, the timeliness and effectiveness of disinfection can be improved, meanwhile, it is ensured that all areas in the garbage can can be fully disinfected through a reasonable disinfection method, the risk of breeding and spreading of the bacteria and viruses is reduced, and the environment is protected. And environmental sanitation and public health are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of trash cans, in particular to a trash can with disinfection and sterilization functions and a disinfection method thereof. Background Art

[0002] In daily life and many public health environments, trash cans are important facilities for garbage collection and temporary storage. As people's requirements for environmental hygiene continue to increase, the health risks caused by the growth of bacteria and viruses in trash cans have attracted increasing attention. Traditional trash cans only have a simple garbage storage function and lack an effective disinfection and sterilization mechanism. During the use of trash cans, various types of garbage, including but not limited to food residues, waste paper, and waste of daily necessities, will carry a large number of bacteria, viruses and other microorganisms. These microorganisms multiply rapidly in the warm, humid and relatively closed environment inside the trash can. For example, the trash cans in family kitchens often contain organic garbage such as leftovers. These garbage easily attract pests such as flies and cockroaches, and at the same time become a breeding ground for pathogenic microorganisms such as Escherichia coli and Staphylococcus aureus. The trash cans in hospitals may contain various infectious pathogens, such as influenza viruses and tuberculosis bacteria. If they cannot be disinfected in a timely and effective manner, cross-infection is very likely to occur, posing a serious threat to the health of medical staff, patients and their families.

[0003] In order to solve the problem of bacterial and viral contamination in trash cans, some trash cans with disinfection functions have appeared in the prior art. However, these prior arts still have many shortcomings. Some trash cans use a timed disinfection method, that is, the disinfection device is started at a fixed time interval. This method cannot disinfect according to the actual degree of contamination in the trash can. When the garbage has just been put in and the bacteria and virus content in the trash can is low, timed disinfection will cause energy waste. When the garbage is piled up and the pollution is serious, it may not be disinfected in time because the disinfection time has not yet arrived, resulting in a large number of bacteria and viruses. Therefore, it is necessary to propose a trash can with disinfection and sterilization function and a disinfection method thereof to solve the problems in the prior art. Summary of the invention

[0004] The purpose of the present invention is to make up for the shortcomings of the prior art and provide a trash can with disinfection and sterilization function and a disinfection method thereof, which can accurately detect the types and contents of a variety of common bacteria and viruses. When the bacteria and virus content reaches a certain concentration, the ultraviolet disinfection lamp located on the barrel cover is automatically started for disinfection.

[0005] In order to solve the above-mentioned technical problems, the present invention provides the following technical solutions: a trash can with disinfection and sterilization function, comprising a trash can body, a bucket cover hinged on the upper surface of the trash can body, an ultraviolet disinfection lamp is installed on the inner wall of the bucket cover, an intelligent control module and a bacteria and virus monitoring sensor are installed on the inner wall of the bucket cover, the ultraviolet disinfection lamp is electrically connected to the intelligent control module through a wire, the intelligent control module is electrically connected to the bacteria and virus monitoring sensor through a wire, a handle is installed on the upper surface of the bucket cover, a display module is installed on the upper surface of the bucket cover, and a power supply component is installed on the upper surface of the bucket cover.

[0006] Furthermore, the power supply assembly includes a protective box fixedly connected to the upper surface of the barrel cover, a rechargeable battery is installed inside the protective box, and a protective cover is installed on the top of the protective box.

[0007] Furthermore, the inner wall of the trash can body is coated with a nano self-cleaning coating. The main component of the nano self-cleaning coating is a composite of titanium dioxide nanoparticles and silicone polymers. The particle size of the nanoparticles is between -nanometers. This coating can decompose organic matter attached to the inner wall of the trash can under ultraviolet light, reducing garbage residue and odor.

[0008] A method for disinfecting a trash can with a disinfection and sterilization function, the method comprising the following steps:

[0009] First, the bacteria and viruses inside the trash can are monitored in real time through the bacteria and virus monitoring sensors located inside the trash can. The light scattering signal data obtained by the sensor is processed by the following algorithm: the light scattering signal intensity is defined as I, and at different time points t1, t2, …, t n The light scattering signal intensities obtained are Define the signal change rate R as:

[0010] At the same time, according to the signal strength of different microfluidic channels Where m is the number of channels, calculate the comprehensive bacterial virus index in is the initial light scattering signal intensity of channel j;

[0011] When R exceeds the preset rate of change threshold R th And the BVI exceeds the preset bacterial virus index threshold BVI th When the concentration of bacteria and viruses inside the trash can reaches the concentration that needs to be disinfected;

[0012] At this time, the intelligent control module sends a start signal to the ultraviolet disinfection lamp located on the barrel cover, and the ultraviolet disinfection lamp irradiates for a fixed time T at a fixed power P for disinfection. The method for determining the power P is as follows: Determine its rated power P according to the model specifications of the ultraviolet disinfection lamp rated , and determine the power coefficient k for effective disinfection in the internal environment of the trash can through experiments. Where 0 < k ≤ 1, then P = k × P rated , the method for determining the fixed time T is as follows: Determine the disinfection time t per unit volume according to the volume V of the trash can and the disinfection experiment data of common bacteria and viruses unit , then T = t unit ×V.

[0013] Furthermore, when determining the power coefficient k, consider the influence of the environmental temperature T env and humidity H env The specific calculation method is as follows: Define the temperature influence coefficient C T and the humidity influence coefficient C H , when T env is between 0 - 10 degrees Celsius, C T = 0.8, when T env is between 10 - 20 degrees Celsius, C T = 1; when T env is between 20 - 30 degrees Celsius, C T = 1.2; when T env is greater than 30 degrees Celsius, C T = 1.5, when H env is between 30% - 50%, C H = 0.9; when H env is between 50% - 70%, C H = 1, when H env is between 70% - 90%, C H = 1.1, when H env is greater than 90%, C H = 1.3, then the calculation formula for the power coefficient k is: k = C T ×C H ×k0, where k0 is the initial power coefficient. This calculation method considering environmental factors can make the power of the ultraviolet disinfection lamp more in line with the actual disinfection effect.

[0014] Even further, when calculating the disinfection time t per unit volume unit , consider the influence of the type of garbage in the trash can. Classify the garbage into easily disinfected garbage type G1, including paper and plastic, and difficult-to-disinfect garbage type G2, including food residues and medical waste. Define the proportion of easily disinfected garbage in the trash can as r1, and the proportion of difficult-to-disinfect garbage as r2, where r1 + r2 = 1. According to the experiment, determine the disinfection time per unit volume of easily disinfected garbage Disinfection time per unit volume of difficult-to-disinfect garbage but This calculation method that takes into account the type of garbage can determine the disinfection time more accurately.

[0015] Furthermore, after the disinfection process is completed, the inside of the trash can is tested again through the bacteria and virus monitoring sensors. If R still exceeds the change rate threshold R th 50% or BVI still exceeds the bacterial virus index threshold BVI th If the disinfection requirement is still not met, an alarm message will be displayed on the display module to prompt the user to check the trash can or perform manual cleaning. This feedback mechanism can ensure that the bacteria and viruses inside the trash can are effectively controlled.

[0016] Furthermore, according to the cumulative use time t of the ultraviolet disinfection lamp use It is calibrated regularly, and the calculation formula of the calibration period C is: Where T cal It is the preset total calibration time threshold. When the calibration cycle is reached, a disinfection experiment is carried out in the trash can using a standard bacterial sample. The power coefficient k is adjusted according to the disinfection effect. This regular calibration mechanism can ensure the stability of the disinfection effect of the ultraviolet disinfection lamp during long-term use.

[0017] Compared with the prior art, the trash can with disinfection and sterilization function and the disinfection method thereof have the following beneficial effects:

[0018] The present invention realizes accurate monitoring of bacteria and viruses inside the trash can through an innovative trash can design and disinfection method, and timely and effectively disinfects according to the monitoring results. The trash can of the present invention utilizes a new type of composite sensor, which can accurately detect the types and contents of multiple common bacteria and viruses. When the bacteria and virus content reaches a certain concentration, the ultraviolet disinfection lamp located on the barrel cover is automatically started for disinfection, which can avoid energy waste and improve the timeliness and effectiveness of disinfection. At the same time, through a reasonable disinfection method, it is ensured that all areas inside the trash can can be fully disinfected, reducing the risk of bacterial and viral breeding and transmission, and ensuring environmental hygiene and public health.

[0019] Other advantages, objectives and features of the present invention will be set forth in part in the following description and, in part, will be apparent to those skilled in the art based on an examination of the following or may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of a trash can with disinfection and sterilization functions;

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of a trash can with a disinfection and sterilization function after the lid is opened;

[0023] Figure 3 The figure is a schematic diagram of the internal structure of a protective box in a trash can with disinfection and sterilization functions.

[0024] In the figure: 1. Trash can body; 2. Can cover; 3. Ultraviolet disinfection lamp; 4. Intelligent control module; 5. Bacteria and virus monitoring sensor; 6. Handle; 7. Display module; 8. Power supply component; 801. Protection box; 802. Rechargeable battery; 803. Protection cover; 9. Nano self-cleaning coating. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Embodiment 1

[0027] In a hospital ward, a trash can with a disinfection and sterilization function of the present invention is placed, the trash can comprises a trash can body 1, a bucket cover 2 is hinged on the upper surface of the trash can body 1, an ultraviolet disinfection lamp 3 is installed on the inner wall of the bucket cover 2, an intelligent control module 4 and a bacteria and virus monitoring sensor 5 are installed on the inner wall of the bucket cover 2, the ultraviolet disinfection lamp 3 is electrically connected to the intelligent control module 4 through a wire, the intelligent control module 4 is electrically connected to the bacteria and virus monitoring sensor 5 through a wire, a handle 6 is installed on the upper surface of the bucket cover 2, a display module 7 is installed on the upper surface of the bucket cover 2, a power supply component 8 is installed on the upper surface of the bucket cover 2, the power supply component 8 comprises a protective box 801 fixedly connected to the upper surface of the bucket cover 2, and the protective box 801 is installed inside A rechargeable battery 802 is provided, and the rechargeable battery 802 is electrically connected to the ultraviolet disinfection lamp 3, the intelligent control module 4, the bacteria and virus monitoring sensor 5 and the display module 7 through wires. A protective cover 803 is installed on the top of the protective box 801, and a card slot is opened at the top of the protective box 801, which can facilitate the installation of the protective cover 803. The inner wall of the trash can body 1 is coated with a nano self-cleaning coating 9. The main component of the nano self-cleaning coating 9 is a composite of titanium dioxide nanoparticles and silicone polymers. The particle size of the nanoparticles is between 20-50 nanometers. This coating can decompose organic matter attached to the inner wall of the trash can under ultraviolet irradiation, reducing garbage residue and the generation of odor.

[0028] The bacteria and virus monitoring sensors installed inside the trash can work continuously. Assume that in the ward, after the trash can has been used for a period of time, the sensors are n The intensity of the light scattering signal obtained Data, assuming the light scattering signal intensity is I, by calculating the signal change rate At the same time, according to the signal intensity of different microfluidic channels (The sensor m of this trash can is 5, which can detect related information such as influenza virus, Streptococcus pneumoniae, Staphylococcus aureus, Escherichia coli, and Mycobacterium tuberculosis) Calculate the comprehensive bacterial virus index in is the initial light scattering signal intensity of channel j, which has been calibrated when the trash can is initially free of bacteria and viruses).

[0029] When R exceeds the preset rate of change threshold R th (In this scenario, R th According to the hospital infection prevention and control standards, the BVI exceeds the preset bacterial virus index threshold BVI th When the dustbin is judged to have reached the concentration that requires disinfection (also set according to hospital standards), the intelligent control module sends a start signal to the ultraviolet disinfection lamp on the cover.

[0030] The ultraviolet disinfection lamp here works on the sterilization principle of ultraviolet rays. Ultraviolet rays are a type of electromagnetic radiation with a wavelength of 10-400nm. The wavelength of the ultraviolet disinfection lamp used in this trash can is in a specific sterilization band range (200-280nm, especially around 253.7nm). Ultraviolet rays in this band can destroy the DNA or RNA structure of microorganisms (such as bacteria, viruses, fungi, etc.). When ultraviolet rays are irradiated on microorganisms, their photon energy is absorbed by the nucleic acid of the microorganism, causing covalent bonds to form between adjacent pyrimidine bases in the nucleic acid, forming pyrimidine dimers. The formation of these dimers will interfere with the DNA replication and transcription process of the microorganism, thereby preventing the reproduction of the microorganism and ultimately leading to the death of the microorganism. The radiation intensity and irradiation time of the ultraviolet disinfection lamp are key factors in determining the disinfection effect.

[0031] The power P and irradiation time T of the ultraviolet disinfection lamp are determined as follows: According to the model specifications of the ultraviolet disinfection lamp, its rated power P rated The power coefficient k is determined by multiple disinfection experiments in hospital wards (taking into account environmental factors such as ward temperature and humidity, assuming k = 0.9), then P = k × P rated , the volume V of the trash can is a certain value (assuming it is 50L), and the unit volume disinfection time t is determined based on the experimental data of bacteria and virus disinfection in common hospital garbage unit (determined as a certain value according to the hospital waste type and ward environment), then T = t unit ×V, the ultraviolet disinfection lamp disinfects with a power of P and a continuous irradiation time of T.

[0032] When calculating the comprehensive bacterial virus index BVI, the microfluidic channel signal intensity corresponding to different types of bacteria and viruses Weighted processing is performed. For example, the pathogenicity score of influenza virus is 8 and the transmission ability score is 7. The pathogenicity score of Streptococcus pneumoniae is 7 and the transmission ability score is 6. The pathogenicity score of Staphylococcus aureus is 7 and the transmission ability score is 7. The pathogenicity score of Escherichia coli is 6 and the transmission ability score is 5. The pathogenicity score of Mycobacterium tuberculosis is 9 and the transmission ability score is 8. According to the weighted coefficient The weighted coefficients corresponding to each bacteria and virus are calculated so that the BVI can more accurately reflect the impact of different bacteria and viruses on disinfection needs.

[0033] When determining the power factor k, consider the ambient temperature T inside the trash can. env and humidity H env The temperature in the ward is generally maintained at 22-25 degrees Celsius, and the humidity is 40%-60%. T (This temperature range C T =1) and humidity influence coefficient C H (This humidity range CH =1), combined with the initial power coefficient k0 to calculate k, and then calculate the unit volume disinfection time t unit At that time, the garbage in the hospital ward trash can was mainly medical waste (belonging to the difficult-to-disinfect garbage type G2), accounting for r2 close to 1. According to the experimental determination of the disinfection time per unit volume of difficult-to-disinfect garbage, Determine t unit .

[0034] After the disinfection process is completed, the sensor detects the inside of the trash can again. If R still exceeds the change rate threshold R th 50% or BVI still exceeds the bacterial virus index threshold BVI th If the disinfection requirement is still not met, an alarm message will be displayed on the display module of the trash can to prompt medical staff to check the trash can or perform manual cleaning. At the same time, according to the cumulative use time t of the ultraviolet disinfection lamp use , according to the calibration cycle (Assume T cal The UV lamp is calibrated regularly (determined as a certain value according to its life span and the frequency of disinfection in the hospital), and a disinfection experiment is carried out in a trash can using a standard bacterial sample. The power coefficient k is adjusted according to the disinfection effect.

[0035] Effects brought by this implementation: Through such an embodiment, in the special environment of a hospital ward, the trash can can be accurately disinfected according to the internal bacterial and viral contamination, avoiding energy waste and untimely disinfection caused by scheduled disinfection, and reducing the risk of cross-infection caused by the breeding of bacteria and viruses in the trash can. Medical staff do not need to frequently disinfect the trash can manually, reducing the workload, while also improving the overall sanitary quality of the ward, providing patients with a safer medical environment, and ensuring the effective implementation of hospital infection prevention and control work. In addition, understanding the working principle of ultraviolet disinfection lamps helps medical staff better understand the disinfection mechanism of trash cans and ensure their normal use and maintenance.

[0036] Embodiment 2

[0037] In the school classroom, trash cans with disinfection and sterilization functions as mentioned above are placed.

[0038] The bacteria and virus monitoring sensors inside the trash can continuously monitor the environment inside the trash can. During daily use, the sensors obtain data at different time points t1, t2, …, t n The light scattering signal intensity By calculating the rate of change of the signal At the same time, according to the signal intensity of different microfluidic channels (This trash can sensor m=3 can detect information such as influenza virus, E. coli and common respiratory pathogens) Calculate the comprehensive bacterial virus index (in is the initial light scattering signal intensity of channel j, calibrated when the trash can is initially free of bacteria and viruses).

[0039] When R exceeds the preset rate of change threshold R th (set according to school hygiene standards) and BVI exceeds the preset bacterial virus index threshold BVI th (also based on school hygiene standards), when it is determined that the bacteria and virus content inside the trash can has reached the concentration that requires disinfection, the intelligent control module sends a start signal to the ultraviolet disinfection lamp on the cover.

[0040] The power P and irradiation time T of the ultraviolet disinfection lamp are determined as follows: Determine the rated power P according to the model and specifications of the ultraviolet disinfection lamp. rated , the power coefficient k is determined by multiple experiments in the classroom environment (taking into account factors such as classroom temperature, humidity, and the frequency of student activities, assuming k = 0.85), then P = k × P rated , the volume V of the trash can is a certain value (assuming it is 30L), and the unit volume disinfection time t is determined based on the experimental data of bacteria and virus disinfection in common school garbage unit (determined according to the school garbage type and classroom environment), then T = t unit ×V, the ultraviolet disinfection lamp disinfects with a power of P and a continuous irradiation time of T.

[0041] When calculating the comprehensive bacterial virus index BVI, the microfluidic channel signal intensity corresponding to different types of bacteria and viruses Weighted processing is performed. For example, the pathogenicity score of influenza virus is 7, and the transmission ability score is 6. The pathogenicity score of Escherichia coli is 6, and the transmission ability score is 5. The pathogenicity score of common respiratory pathogens is 6, and the transmission ability score is 6. According to the weighting coefficient The weighted coefficient is calculated so that the BVI can accurately reflect the degree of disinfection requirements of different microorganisms.

[0042] When determining the power factor k, consider the ambient temperature T inside the trash can. env and humidity H env The classroom temperature is generally between 18 and 25 degrees Celsius, and the humidity is between 40% and 60%. T (This temperature range C T =1) and humidity influence coefficient C H (This humidity range C H =1), and k is calculated by combining the initial power coefficient k0.

[0043] In calculating the unit volume disinfection time t unit At that time, the garbage in the school classroom trash can was mainly paper, food packaging, etc. (a mixed type of easy and medium-difficulty disinfection, with easy disinfection accounting for r1=0.6 and difficult disinfection accounting for r2=0.4). According to the experiment, the disinfection time per unit volume of easy-to-disinfect garbage was determined. Disinfection time per unit volume of difficult-to-disinfect garbage but

[0044] After the disinfection process is completed, the sensor detects the inside of the trash can again. If R still exceeds the change rate threshold R th 50% or BVI still exceeds the bacterial virus index threshold BVI th If the disinfection requirement is still not met, an alarm message will be displayed on the display module of the trash can to prompt the cleaning staff to check the trash can or perform manual cleaning. At the same time, according to the cumulative use time t of the ultraviolet disinfection lamp use , according to the calibration cycle (Assume T cal The UV lamp is calibrated regularly (determined according to its life span and the school cleaning cycle), and disinfection experiments are carried out in the trash can using standard bacteria samples. The power coefficient k is adjusted according to the disinfection effect.

[0045] The effects brought about by this embodiment are as follows: in a crowded environment such as a school classroom, the trash can can be accurately disinfected according to the internal bacterial and viral contamination situation, avoiding the energy waste and insufficient disinfection caused by fixed-time disinfection, and effectively reducing the possibility of bacterial and viral breeding and transmission in the trash can, which helps to reduce the risk of students and teachers contracting diseases in the classroom and create a healthier learning environment for teachers and students. Cleaning staff can also find problematic trash cans in time through the automatic alarm function of the trash can, reducing the workload of daily maintenance, ensuring the hygiene of the classroom, and facilitating the school's hygiene management work.

[0046] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the same elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A trash can with disinfection and sterilization function, characterized in that: The invention comprises a trash can body (1), the upper surface of the trash can body (1) is hingedly connected with a bucket cover (2), the inner wall of the bucket cover (2) is installed with an ultraviolet disinfection lamp (3), the inner wall of the bucket cover (2) is installed with an intelligent control module (4) and a bacteria and virus monitoring sensor (5), the ultraviolet disinfection lamp (3) is electrically connected to the intelligent control module (4) through a wire, the intelligent control module (4) is electrically connected to the bacteria and virus monitoring sensor (5) through a wire, the upper surface of the bucket cover (2) is installed with a handle (6), the upper surface of the bucket cover (2) is installed with a display module (7), and the upper surface of the bucket cover (2) is installed with a power supply component (8).

2. A trash can with disinfection and sterilization function according to claim 1, characterized in that: The power supply assembly (8) comprises a protection box (801) fixedly connected to the upper surface of the barrel cover (2), a rechargeable battery (802) is installed inside the protection box (801), and a protection cover (803) is installed on the top of the protection box (801).

3. A trash can with disinfection and sterilization function according to claim 1, characterized in that: The inner wall of the trash can body (1) is coated with a nano self-cleaning coating (9), wherein the main component of the nano self-cleaning coating (9) is a composite of titanium dioxide nanoparticles and organic silicon polymers, and the particle size of the nanoparticles is between 20 and 50 nanometers.

4. A method for disinfecting a trash can with a disinfection and sterilization function, characterized in that: The method comprises the following steps: First, the bacteria and viruses inside the trash can are monitored in real time through the bacteria and virus monitoring sensors located inside the trash can. The light scattering signal data obtained by the sensor is processed by the following algorithm: the light scattering signal intensity is defined as I, and at different time points t1, t2, …, t n The light scattering signal intensities obtained are Define the signal change rate R as: At the same time, according to the signal strength of different microfluidic channels Where m is the number of channels, and the comprehensive bacterial virus index BVI is calculated: in is the initial light scattering signal intensity of channel j; When R exceeds the preset rate of change threshold R th And BVI exceeds the preset bacterial virus index threshold BVI th When the concentration of bacteria and viruses inside the trash can reaches the concentration that needs to be disinfected; At this time, the intelligent control module sends a start signal to the ultraviolet disinfection lamp located on the barrel cover, and the ultraviolet disinfection lamp irradiates continuously for a fixed time T at a fixed power P for disinfection. The method for determining the power P is as follows: Determine its rated power P according to the model specifications of the ultraviolet disinfection lamp rated , and determine the power coefficient k for effective disinfection in the internal environment of the trash can through experiments, where 0 < k ≤ 1, then P = k × P rated , the method for determining the fixed time T is as follows: Determine the disinfection time t per unit volume according to the volume V of the trash can and the disinfection experimental data of common bacteria and viruses unit , then T = t unit ×V.

5. A trash can with disinfection and sterilization function and a disinfection method thereof according to claim 4, characterized in that: When determining the power factor k, consider the ambient temperature T inside the trash can. env and humidity H env The specific calculation method is as follows: Define the temperature influence coefficient C T and humidity influence coefficient C H , when T env At 0-10 degrees Celsius, C T =0.8, when T env At 10-20 degrees Celsius, C T =1, when T env At 20-30 degrees Celsius, C T =1.2, when T env When the temperature is greater than 30 degrees Celsius, T =1.5, when H env At 30%-50%, C H =0.9, when H env At 50%-70%, C H =1; when H env At 70%-90%, C H =1.1, when H env When it is greater than 90%, C H =1.3, then the power coefficient k is calculated as: k = C T ×C H ×k0, where k0 is the initial power coefficient.

6. A trash can with disinfection and sterilization function and a disinfection method thereof according to claim 4, characterized in that: In calculating the unit volume disinfection time t unit Considering the influence of the type of garbage in the trash can, the garbage is divided into easy-to-disinfect type G1, including paper and plastic, and difficult-to-disinfect type G2, including food residues and medical waste. The proportion of easy-to-disinfect garbage in the trash can is defined as r1, and the proportion of difficult-to-disinfect garbage is defined as r2, where r1+r2=1. The disinfection time per unit volume of easy-to-disinfect garbage is determined experimentally. Disinfection time per unit volume of difficult-to-disinfect garbage but 7. A trash can with disinfection and sterilization function and a disinfection method thereof according to claim 4, characterized in that: After the disinfection process is completed, the inside of the trash can is tested again through the bacteria and virus monitoring sensors. If R still exceeds the change rate threshold R th 50% or BVI still exceeds the bacterial virus index threshold BVI th If the disinfection requirement is still not met, an alarm message will be displayed on the display module to prompt the user to check the trash can and perform manual cleaning.

8. A trash can with disinfection and sterilization function and a disinfection method thereof according to claim 4, characterized in that: According to the cumulative use time of the ultraviolet disinfection lamp t use It is calibrated regularly, and the calculation formula of the calibration period C is: Where T cal is the preset total calibration time threshold. When the calibration period is reached, a disinfection experiment is carried out in the trash can using a standard bacterial sample, and the power coefficient j is adjusted according to the disinfection effect.

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