CN116407658B - Test system for evaluating disinfection effect of container - Google Patents
Test system for evaluating disinfection effect of container Download PDFInfo
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- CN116407658B CN116407658B CN202211625897.8A CN202211625897A CN116407658B CN 116407658 B CN116407658 B CN 116407658B CN 202211625897 A CN202211625897 A CN 202211625897A CN 116407658 B CN116407658 B CN 116407658B
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- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 178
- 230000000694 effects Effects 0.000 title claims abstract description 28
- 238000012360 testing method Methods 0.000 title claims abstract description 19
- 230000001954 sterilising effect Effects 0.000 claims abstract description 141
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 121
- 238000004088 simulation Methods 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 28
- 238000005259 measurement Methods 0.000 claims abstract description 19
- 230000008569 process Effects 0.000 claims abstract description 17
- 238000012545 processing Methods 0.000 claims description 17
- 238000012937 correction Methods 0.000 claims description 16
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- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 description 2
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- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/26—Accessories or devices or components used for biocidal treatment
- A61L2/28—Devices for testing the effectiveness or completeness of sterilisation, e.g. indicators which change colour
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/16—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
- A61L2/20—Gaseous substances, e.g. vapours
- A61L2/202—Ozone
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
Abstract
The application provides a test system for evaluating the disinfection effect of a container, which comprises: the container simulation module is responsible for simulating the internal environment of the container and realizing the measurement of the sterilization rate under different conditions; the vibration control module is responsible for simulating the vibration in the container transportation process; the parameter measurement module is responsible for measuring the vacuum negative pressure value, the ozone concentration value, the vibration intensity value and the vibration time value in the container; the central control module is responsible for receiving parameters of a vacuum negative pressure value, an ozone concentration value, a vibration intensity value and a vibration time value, and obtains optimized sterilization parameters of the container by combining the sterilization rate, so as to realize the determination of the sterilization rate under different conditions. According to the application, the test of the sterilization in the container is realized by setting different conditions, the influence of the vacuum negative pressure value, the ozone concentration, the vibration intensity and the vibration time on the sterilization rate in the container can be comprehensively measured, and the optimal sterilization parameters in the container transportation process can be obtained.
Description
Technical Field
The application relates to the technical field of disinfection effect evaluation data processing, in particular to a test system for evaluating the disinfection effect of a container.
Background
The challenge of virus mutation is more serious due to global vandalism of new coronal epidemic situation. The container is used as a transport turnover carrier of import and export cargoes, and is very easy to be a transmission carrier of various viruses due to the special properties such as the circulation and uncertainty of contact personnel. The new crown positive cases of container goods are also frequently reported in society. In order to further strengthen epidemic prevention and control, the construction of centralized supervision bins is comprehensively promoted according to the principles of accurate prevention and control, forward detection, source blocking and risk control, a container centralized supervision and disinfection mechanism is established, full-flow closed loop control traceability is realized, and input risks caused by the transportation of new coronaviruses through containers are reduced to the greatest extent.
The traditional container sterilizing means includes: the disinfection spray is carried out on the outer vertical surface, tires, a cockpit, a box body and a box door handle of the transport truck by the disinfection spray carried by disinfection personnel. After receiving the goods, firstly opening the box door, sterilizing and sterilizing the goods at the door of the box for the second time by sterilizing personnel, and then closing the box door for 10-15 minutes and then unloading the goods. And (5) manually spraying again by taking the tray as a unit, and finally carrying out hexahedral disinfection and sterilization on each article. The traditional disinfection relies on manual operation in a large amount, and missing or uncovered places are unavoidable. In order to meet the requirements of high efficiency, safety, wide range, informatization and automation, ozone is injected into a container in a vacuum environment to realize sterilization in the transportation process, and the ozone can penetrate into bacteria to destroy lipoproteins and lipopolysaccharides and cells aiming at various bacteria: meanwhile, the enzyme required by glucose can be degraded, so that TCA (ternary content addressable memory) circulation for maintaining the vital activity of the enzyme can not be performed, and the required ATP can not be supplied, so that bacteria die; when acting on viruses, the protein reacts with four polypeptide chains of capsid protein, and the protein is damaged; disruption of its DNA or RNA results in metabolic arrest and viral death. Ozone has the characteristics of broad spectrum, safety, high efficiency and no residue, belongs to gas, can be freely diffused to all space corners in a container, and realizes complete coverage and no dead angle disinfection.
In the first prior art, a method for evaluating the disinfection quality of CN114937236A, and a related device, equipment and storage medium, wherein the method comprises the following steps: acquiring an image frame obtained by shooting a target space; detecting whether a target object exists in the image frame; in response to detecting that a target object exists in an image frame, acquiring killing process information of a target object for killing operation in a target space; based on the killing process information, a completion of the killing operation of the target object is determined. According to the scheme, although the automatic evaluation of the killing operation of the target object is realized, the scheme aims at the comprehensive monitoring of the killing process, does not relate to the effect detection after the killing, and is not suitable for the in-container killing effect evaluation.
The automatic disinfection and inspection system of the CN102274533A container and the disinfection and inspection method thereof in the prior art comprise a computer control unit, an automatic dispensing unit, a detection unit, a remote computer inspection unit, a spraying portal and a manipulator, wherein the spraying portal comprises a portal body consisting of upright posts on two sides and a top beam, spray heads are arranged at intervals along the inner side surfaces of the upright posts and the top beam of the portal body, and the manipulator is fixed on a top beam pulley; the device is characterized in that a pulley and a sliding rail are arranged at the bottom of the upright post, and the pulley is connected with a computer control unit through a pulley servo motor; the manipulator spray head is a two-fluid universal spray head; two rows of spray heads with included angles of 30-60 degrees are arranged on the portal frame body; a bottom spraying belt is arranged; the disinfection checking method comprises the following steps: starting the system, setting parameters, automatically dispensing medicines and outputting liquid medicine; selecting a disinfection working mode: a manual disinfection mode, a channel disinfection mode, a scanning disinfection mode and a manipulator box disinfection checking mode. Although the container is automatically tracked, positioned, sterilized and inspected to achieve efficient and thorough sterilization, the sterilization method is time-consuming and labor-consuming, and the sterilization effect cannot be detected, so that potential safety hazards exist in sterilization.
In the third prior art, CN112717176a is a disinfection facility and method for a refrigerated container transportation system, comprising a waiting area to be treated, a disinfection system, a waiting area to be treated and a central control system; a first prompter is arranged in the waiting area to be processed; the disinfection system comprises a disinfection bin, a vacuumizing device and an ozone providing device; the left side and the right side of the disinfection bin are respectively provided with a disinfection bin inlet and a disinfection bin outlet; the top of the disinfection bin is provided with a unhooking device for unhooking or hanging the refrigerated container and the transport vehicle; a second prompter is arranged in the processing waiting area; the central control system is connected with the first prompter, the sterilizing bin inlet, the sterilizing bin outlet, the unhooking device and the second prompter through data transmission lines. Although the way of spreading the new coronavirus of the cold chain food in the refrigerated container can be effectively realized, in particular, the adverse effect of the disinfection facilities on parts such as an engine and tires of a transport vehicle in the process of vacuumizing and injecting ozone can be avoided, the test on the disinfection effect of ozone is lacking, and the concentration is not clear in the process of transporting, so that the disinfection effect is poor.
The first, second and third existing technologies lack the evaluation test of the container disinfection effect, so that whether the disinfection parameters are reasonable or not cannot be judged, and the aim of high-efficiency disinfection cannot be achieved; and testing the disinfection effect of different ozone concentrations under the same vacuum negative pressure value. And under the condition of the same negative pressure value and ozone concentration, the influence of vibration intensity and vibration time on the effect is tested, and under the condition of fixed conditions, the influence of different durations on the effect is tested.
Disclosure of Invention
In order to solve the technical problems, the application provides a test system for evaluating the disinfection effect of a container, which comprises:
the container simulation module is responsible for simulating the internal environment of the container and realizing the measurement of the sterilization rate under different conditions;
the vibration control module is responsible for simulating the vibration in the container transportation process;
the parameter measurement module is connected with the container simulation module and is responsible for measuring the vacuum negative pressure value, the ozone concentration value, the vibration intensity value and the vibration time value in the container;
the central control module is connected with the parameter measurement module and is responsible for receiving parameters of the vacuum negative pressure value, the ozone concentration value, the vibration intensity value and the vibration time value, and the optimal sterilization parameters of the container are obtained by combining the sterilization rate.
Optionally, the different conditions comprise: the amount of the supplementary ozone under different vacuum negative pressure values, the concentration of the ozone under the same vacuum negative pressure value, the vibration intensity and the vibration time under the same negative pressure value and the concentration of the ozone, and the time under the certain conditions of the vacuum negative pressure value, the concentration of the ozone, the vibration intensity and the vibration time.
Optionally, the container simulation module includes:
an ozone concentration sensor for measuring the concentration of ozone in the container;
the vacuum negative pressure sensor is responsible for measuring the vacuum negative pressure value in the container;
the vibration intensity sensor is responsible for measuring the vibration intensity value of the container;
the timer is connected with the ozone concentration sensor, the vacuum negative pressure sensor and the vibration intensity sensor, receives the control of the central control module, and calculates and adjusts the ozone concentration, the vacuum negative pressure value and the vibration time.
Optionally, the timer comprises a time error correction module responsible for calibrating the time of the timer; a time error correction module comprising:
a correction time setting sub-module, which is responsible for setting the interval of the time counter calibration time, wherein the interval is set to 15min, 30min or 60min from a certain integral point as a starting point;
the time reading sub-module is used for reading the current time of the timer reaching the setting time of the correction time setting sub-module and reading the standard time through a network;
the first error calculation module is in charge of comparing the standard time with the current time to obtain an error value, and when the first error value is in a threshold range, starting time calibration to synchronize the time of the timer with the standard time;
and the second error calculation module is responsible for gradually decrementing the current time when the first error value exceeds the threshold range until the first error value is within the threshold range, restarting time calibration, and synchronizing the time of the timer with the standard time.
Optionally, the vibration control module includes:
the transportation environment simulation sub-module is responsible for setting the vibration frequency corresponding to the transportation environment; the transportation environment comprises: highway, railway, aeronautical and maritime traffic;
the vibration time setting submodule is responsible for setting the execution time of the current vibration frequency;
and the vibration table frame module is responsible for fixing the container and executing the set vibration frequency.
Optionally, the vibrating table frame submodule includes: a motor slip frequency control unit responsible for executing a vibration frequency of a transportation environment simulation sub-module, the motor slip frequency control unit comprising:
the current acquisition subunit is responsible for obtaining torque current and exciting current in a rotating coordinate by coordinate transformation of the three-phase current detected to be input into the motor;
the model conversion subunit is responsible for sending the torque current and the exciting current into the current loop together for adjustment, and the output is subjected to current-voltage model conversion;
and the motor control subunit is responsible for controlling the inverter to output three-phase voltage through space vector pulse width modulation so as to control the motor.
Optionally, the parameter determination module includes:
the first type of parameter acquisition submodule is responsible for acquiring the ozone quantity with the same concentration under different vacuum negative pressure values and calculating the container sterilization rate under different vacuum negative pressure values;
the second type of parameter acquisition submodule is responsible for acquiring container sterilization rates of different ozone concentration values under the same vacuum negative pressure value condition;
the third type of parameter acquisition submodule is responsible for calculating container sterilization rates of different vibration intensity values and vibration time values under the condition of the same negative pressure value and ozone concentration value;
a fourth type of parameter acquisition submodule is responsible for calculating the container sterilization rate under different time under the condition that the vacuum negative pressure value, the ozone concentration value, the vibration intensity value and the vibration time value are fixed values;
the parameter processing sub-module is in charge of receiving all parameters of the first type parameter acquisition sub-module, the second type parameter acquisition sub-module, the third type parameter acquisition sub-module and the fourth type parameter acquisition sub-module, obtaining digital signals of all parameters by analog signals of all parameters through the analog-to-digital conversion module, and identifying and distinguishing the digital signals to form table data for display.
Optionally, the parameter processing sub-module includes:
the analog signal decomposition unit is responsible for performing three-layer wavelet decomposition on analog signals of the first type parameter acquisition sub-module, the second type parameter acquisition sub-module, the third type parameter acquisition sub-module and the fourth type parameter acquisition sub-module;
the threshold denoising unit is responsible for performing threshold denoising processing on the wavelet coefficients in the wavelet transform domain;
and the analog signal reconstruction unit is responsible for carrying out wavelet inverse transformation on the denoised wavelet coefficient to reconstruct an analog signal.
Optionally, the central control module includes:
the target parameter determining submodule is responsible for determining sterilization target parameters to be optimized;
the target parameter sequencing sub-module is responsible for sequencing the sterilization target parameters to be optimized of the first type of parameters, the second type of parameters, the third type of parameters and the fourth type of parameters from large to small according to the sterilization rate;
the target parameter set submodule is responsible for extracting sterilization target parameters, the sterilization rate of which reaches a sterilization rate threshold value, from sterilization target parameters to be optimized, and forming an optimized sterilization target parameter set;
and the sterilization parameter optimization sub-module is responsible for selecting a vacuum negative pressure value, an ozone concentration value, a vibration intensity value and a vibration time value which reach a sterilization rate threshold value from an optimized sterilization target parameter set through an objective function, wherein the vacuum negative pressure value, the ozone concentration value, the vibration intensity value and the vibration time value are the container optimized sterilization parameters.
Optionally, the central control module is connected with an ozone generating array sub-module and a flowmeter, the flowmeter is connected with a negative pressure meter and a vacuum pump, the ozone generating array sub-module and the negative pressure meter are connected with a container simulation module, the container simulation module is arranged on the vibration control module, and the ozone treatment module is connected with the vacuum pump;
an ozone generation array submodule which is responsible for generating ozone with different concentrations which is transmitted to the interior of the container for sterilization;
the flowmeter is responsible for measuring the rate of air extraction and ozone when the container is vacuumized;
the negative pressure meter is responsible for measuring the vacuum degree in the container;
a vacuum pump responsible for performing air and ozone extraction equipment for the container;
and the ozone treatment module is responsible for treating the ozone pumped by the vacuum pump.
The container simulation module simulates the internal environment of the container, and realizes the measurement of the sterilization rate under different conditions; the vibration control module simulates vibration in the container transportation process; the parameter measurement module is used for measuring a vacuum negative pressure value, an ozone concentration value, a vibration intensity value and a vibration time value in the container; the central control module receives parameters of a vacuum negative pressure value, an ozone concentration value, a vibration intensity value and a vibration time value, and obtains optimized sterilization parameters of the container by combining the sterilization rate; the present embodiment enables testing of sterilization inside a container by setting different conditions including: the method has the advantages that the effects of the vacuum negative pressure value, the ozone concentration, the vibration intensity and the vibration time on the sterilization rate in the container can be comprehensively measured by adopting different settings, namely the effects of the vacuum negative pressure value, the ozone concentration, the vibration intensity and the vibration time on the sterilization rate in the container can be comprehensively measured, the optimal sterilization parameters in the container transportation process can be obtained through the embodiment of the sterilization rate of the reaction under the conditions, the sterilization effect is truly achieved, the transmission of germs is reduced, and the transportation safety is improved.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application. The objectives and other advantages of the application will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings.
The technical scheme of the application is further described in detail through the drawings and the embodiments.
Drawings
The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate the application and together with the embodiments of the application, serve to explain the application. In the drawings:
FIG. 1 is a block diagram of a test system for evaluating the disinfection effect of a container in embodiment 1 of the present application;
FIG. 2 is a block diagram of a container simulation module in embodiment 2 of the present application;
FIG. 3 is a block diagram of a timer in embodiment 3 of the present application;
FIG. 4 is a block diagram of a vibration control module according to embodiment 4 of the present application;
FIG. 5 is a block diagram of a vibration table sub-module in accordance with embodiment 5 of the present application;
FIG. 6 is a block diagram of a parameter measurement module in embodiment 6 of the present application;
FIG. 7 is a block diagram of a parameter processing sub-module in embodiment 7 of the present application;
FIG. 8 is a block diagram of a central control module according to embodiment 8 of the present application;
fig. 9 is a schematic diagram of a central control module according to embodiment 9 of the present application.
Detailed Description
The preferred embodiments of the present application will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present application only, and are not intended to limit the present application.
The terminology used in the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of embodiments of the application. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.
When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the application as detailed in the accompanying claims. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
Example 1
As shown in fig. 1, an embodiment of the present application provides a test system for evaluating a container disinfection effect, including:
the container simulation module is responsible for simulating the internal environment of the container and realizing the measurement of the sterilization rate under different conditions;
the vibration control module is responsible for simulating the vibration in the container transportation process;
the parameter measurement module is connected with the container simulation module and is responsible for measuring the vacuum negative pressure value, the ozone concentration value, the vibration intensity value and the vibration time value in the container;
the central control module is connected with the parameter measurement module and is responsible for receiving parameters of the vacuum negative pressure value, the ozone concentration value, the vibration intensity value and the vibration time value, and the optimal sterilization parameters of the container are obtained by combining the sterilization rate.
The working principle and beneficial effects of the technical scheme are as follows: the container simulation module simulates the internal environment of the container to realize the measurement of the sterilization rate under different conditions; the vibration control module simulates vibration in the container transportation process; the parameter measurement module is used for measuring a vacuum negative pressure value, an ozone concentration value, a vibration intensity value and a vibration time value in the container; the central control module receives parameters of a vacuum negative pressure value, an ozone concentration value, a vibration intensity value and a vibration time value, and obtains optimized sterilization parameters of the container by combining the sterilization rate; the present embodiment enables testing of sterilization inside a container by setting different conditions including: the method has the advantages that the effects of the vacuum negative pressure value, the ozone concentration, the vibration intensity and the vibration time on the sterilization rate in the container can be comprehensively measured by adopting different settings, namely the effects of the vacuum negative pressure value, the ozone concentration, the vibration intensity and the vibration time on the sterilization rate in the container can be comprehensively measured, the optimal sterilization parameters in the container transportation process can be obtained through the embodiment of the sterilization rate of the reaction under the conditions, the sterilization effect is truly achieved, the transmission of germs is reduced, and the transportation safety is improved.
Example 2
As shown in fig. 2, on the basis of embodiment 1, the container simulation module provided in the embodiment of the present application includes:
an ozone concentration sensor for measuring the concentration of ozone in the container;
the vacuum negative pressure sensor is responsible for measuring the vacuum negative pressure value in the container;
the vibration intensity sensor is responsible for measuring the vibration intensity value of the container;
the timer is connected with the ozone concentration sensor, the vacuum negative pressure sensor and the vibration intensity sensor, receives the control of the central control module, and calculates and adjusts the ozone concentration, the vacuum negative pressure value and the vibration time.
The working principle and beneficial effects of the technical scheme are as follows: the ozone concentration sensor is responsible for measuring the concentration of ozone in the container; the vacuum negative pressure sensor is responsible for measuring the vacuum negative pressure value in the container; the vibration intensity sensor is used for measuring the vibration intensity value of the container; the timer receives the control of the central control module, and calculates and adjusts the ozone concentration, the vacuum negative pressure value and the vibration time; according to the embodiment, by measuring the ozone concentration, the vacuum negative pressure value and the vibration intensity of the container, accurate and comprehensive data are provided for the central control module to calculate the sterilization rate under different conditions, and the accuracy of the sterilization effect evaluation result under control is improved; the ozone concentration, the vacuum negative pressure value and the vibration time can be accurately obtained under the action of the timer, so that the efficient operation of the test system is facilitated, and the optimal operation time of the sterilization rate is obtained.
Example 3
As shown in fig. 3, on the basis of embodiment 2, the timer provided in the embodiment of the present application includes a time error correction module responsible for calibrating the time of the timer; a time error correction module comprising:
the correction time setting sub-module is in charge of setting the interval of the time counter calibration time, the interval is set to be 15min, 30min or 60min from a certain integral point, and the specific interval is set according to actual conditions;
the time reading sub-module is used for reading the current time of the timer reaching the setting time of the correction time setting sub-module and reading the standard time through a network;
the first error calculation module is in charge of comparing the standard time with the current time to obtain an error value, and when the first error value is in a threshold range, starting time calibration to synchronize the time of the timer with the standard time;
and the second error calculation module is responsible for gradually decrementing the current time when the first error value exceeds the threshold range until the first error value is within the threshold range, restarting time calibration, and synchronizing the time of the timer with the standard time.
The working principle and beneficial effects of the technical scheme are as follows: the timer comprises a time error correction module responsible for calibrating time of the timer; a time error correction module comprising: the correction time setting sub-module is responsible for setting the interval of the time counter calibration time, the interval is set to be 15min, 30min or 60min from a certain integral point, and the specific interval is set according to actual conditions; the time reading sub-module is used for reading the current time of the timer reaching the setting time of the correction time setting sub-module and reading the standard time through a network; the first error calculation module is responsible for comparing the standard time with the current time to obtain an error value, and when the first error value is within a threshold range, starting time calibration to synchronize the time of the timer with the standard time; the second error calculation module is responsible for gradually decrementing the current time when the first error value exceeds the threshold range until the first error value is within the threshold range, restarting time calibration, and synchronizing the time of the timer with the standard time; the time calibration is carried out on the timer, and the time of the timer is consistent with the standard time, so that the time of the timer is more accurate, the time for adjusting the ozone concentration, the vacuum negative pressure value and the vibration can be obtained, and the accuracy of the sterilization rate is effectively improved.
Example 4
As shown in fig. 4, on the basis of embodiment 1, the vibration control module provided in the embodiment of the present application includes:
the transportation environment simulation sub-module is responsible for setting the vibration frequency corresponding to the transportation environment; the transportation environment comprises: highway, railway, aeronautical and maritime traffic;
the vibration time setting submodule is responsible for setting the execution time of the current vibration frequency;
and the vibration table frame module is responsible for fixing the container and executing the set vibration frequency.
The working principle and beneficial effects of the technical scheme are as follows: the transportation environment simulation sub-module is responsible for setting the vibration frequency corresponding to the transportation environment; the transportation environment comprises: highway, railway, aeronautical and maritime traffic; the vibration time setting sub-module is responsible for setting the execution time of the current vibration frequency; the vibration table frame module is responsible for fixing the container and executing the set vibration frequency; according to the embodiment, the vibration frequency attached to the transportation environment is set, so that the vibration bench submodule simulates the real road condition in transportation more truly, the evaluation of the container disinfection effect is closer to reality, the time and energy of real operation are saved, and the accuracy of the test result is guaranteed to a certain extent.
Example 5
As shown in fig. 5, on the basis of embodiment 4, the vibration table sub-module provided in the embodiment of the present application includes: a motor slip frequency control unit responsible for executing a vibration frequency of a transportation environment simulation sub-module, the motor slip frequency control unit comprising:
the current acquisition subunit is responsible for obtaining torque current and exciting current in a rotating coordinate by coordinate transformation of the three-phase current detected to be input into the motor;
the model conversion subunit is responsible for sending the torque current and the exciting current into the current loop together for adjustment, and the output is subjected to current-voltage model conversion;
and the motor control subunit is responsible for controlling the inverter to output three-phase voltage through space vector pulse width modulation so as to control the motor.
The working principle and beneficial effects of the technical scheme are as follows: the scheme current obtaining subunit converts the detected three-phase current of the motor into torque current and exciting current in a rotating coordinate through coordinate transformation; the model conversion subunit sends the torque current and the exciting current into a current loop together for adjustment, and the output is subjected to current-voltage model conversion; the motor control subunit controls the inverter to output three-phase voltage through space vector pulse width modulation, so as to control the motor; the input of the current loop is output after PID adjustment of the speed loop, which is called current loop setting, the difference value after comparison of feedback values of the current loop and the current loop is output to the motor after PID adjustment in the current loop, the output of the current loop is the phase current of each phase of the motor, and the feedback of the current loop is not the feedback of the encoder but the feedback of the Hall element arranged in each phase in the driver to the current loop; according to the embodiment, the space vector pulse width modulation is adopted to control the inverter to output three-phase voltage, so that the slip frequency of the motor is controlled, the control mode is simple, the stability of torque and magnetic linkage is realized by adopting the control current inner ring and the rotating speed outer ring, the motor of the vibrating table frame module rotates more stably, the vibration frequency of the transportation environment simulation sub-module can be accurately output, the real transportation environment is simulated, and the precision of the container disinfection evaluation result is ensured.
Example 6
As shown in fig. 6, on the basis of embodiment 1, a parameter measurement module provided in an embodiment of the present application includes:
the first type of parameter acquisition submodule is responsible for acquiring the ozone quantity with the same concentration under different vacuum negative pressure values and calculating the container sterilization rate under different vacuum negative pressure values;
the second type of parameter acquisition submodule is responsible for acquiring container sterilization rates of different ozone concentration values under the same vacuum negative pressure value condition;
the third type of parameter acquisition submodule is responsible for calculating container sterilization rates of different vibration intensity values and vibration time values under the condition of the same negative pressure value and ozone concentration value;
a fourth type of parameter acquisition submodule is responsible for calculating the container sterilization rate under different time under the condition that the vacuum negative pressure value, the ozone concentration value, the vibration intensity value and the vibration time value are fixed values;
the parameter processing sub-module is in charge of receiving all parameters of the first type parameter acquisition sub-module, the second type parameter acquisition sub-module, the third type parameter acquisition sub-module and the fourth type parameter acquisition sub-module, obtaining digital signals of all parameters by analog signals of all parameters through the analog-to-digital conversion module, and identifying and distinguishing the digital signals to form table data for display.
The working principle and beneficial effects of the technical scheme are as follows: the first type parameter acquisition submodule of the scheme acquires the ozone quantity with the same concentration under different vacuum negative pressure values, and calculates the container sterilization rate under different vacuum negative pressure values; the second type parameter acquisition submodule acquires container sterilization rates of different ozone concentration values under the same vacuum negative pressure value condition; the third type of parameter obtaining submodule calculates the container sterilization rate of different vibration intensity values and vibration time values under the condition of the same negative pressure value and ozone concentration value; the fourth type of parameter obtaining submodule calculates the container sterilization rate at different times under the condition that the vacuum negative pressure value, the ozone concentration value, the vibration intensity value and the vibration time value are fixed values; the parameter processing sub-module receives all parameters of the first type parameter acquisition sub-module, the second type parameter acquisition sub-module, the third type parameter acquisition sub-module and the fourth type parameter acquisition sub-module, obtains digital signals of all parameters through the analog-to-digital conversion module, and identifies and distinguishes the digital signals to form table data for display; according to the embodiment, the measurement and calculation of the container sterilization rate under different conditions are realized by collecting four types of parameters, the influence degree of the vacuum negative pressure value, the ozone amount and concentration value, the vibration intensity and the vibration time on the sterilization rate is obtained, the parameters can be effectively specified, the measurement precision of the sterilization effect is effectively improved through the setting of the fixed value and the variable value, and reliable reference data is provided for realizing efficient sterilization of container transportation.
Example 7
As shown in fig. 7, on the basis of embodiment 6, a parameter processing sub-module provided in an embodiment of the present application includes:
the analog signal decomposition unit is responsible for performing three-layer wavelet decomposition on analog signals of the first type parameter acquisition sub-module, the second type parameter acquisition sub-module, the third type parameter acquisition sub-module and the fourth type parameter acquisition sub-module;
the threshold denoising unit is responsible for performing threshold denoising processing on the wavelet coefficients in the wavelet transform domain;
the threshold denoising process is performed by three threshold functions, including:
the first threshold function is:
the second threshold function is:
the third threshold function is:
wherein,,wavelet estimation coefficients representing a denoising parametric analog signal of a first threshold function, +.>Wavelet estimation system for representing denoising parameter analog signal of second threshold functionCount (n)/(l)>The wavelet estimation coefficient of the parameter analog signal is denoised by a third threshold function, ω represents the wavelet coefficient of the original parameter analog signal, λ represents the wavelength of the parameter analog signal, sgn (ω) represents the sign function of the wavelet coefficient of the original parameter analog signal, and the first threshold function is responsible for preserving local characteristics such as the edge of the parameter analog signal; the second threshold function is continuous at the threshold of the first threshold function, and the obtained parameter analog signals are relatively smooth; the first threshold function and the second threshold function remove relatively smaller wavelet coefficients, the third threshold function removes relatively larger wavelet coefficients, local characteristics such as parameter analog signal edges and the like are reserved, and the obtained parameter analog signal is relatively smooth;
and the analog signal reconstruction unit is responsible for carrying out wavelet inverse transformation on the denoised wavelet coefficient to reconstruct an analog signal.
The working principle and beneficial effects of the technical scheme are as follows: the analog signal decomposition unit of the scheme carries out three-layer wavelet decomposition on the analog signals of the first-class parameter acquisition sub-module, the second-class parameter acquisition sub-module, the third-class parameter acquisition sub-module and the fourth-class parameter acquisition sub-module; the threshold denoising unit performs threshold denoising processing on the wavelet coefficient in the wavelet transform domain; the analog signal reconstruction unit carries out wavelet inverse transformation on the denoised wavelet coefficient to reconstruct an analog signal; according to the embodiment, the wavelet is adopted to reconstruct the analog signals of all parameters, so that the real-time performance of the analog signals is improved, reliable data with high real-time performance are provided for the calculation of the sterilization rate, and meanwhile, the accuracy of parameter acquisition is improved; the threshold denoising processing is carried out by adopting three threshold functions, and the first threshold function is responsible for retaining local characteristics such as parameter analog signal edges; the second threshold function is continuous at the threshold of the first threshold function, and the obtained parameter analog signals are relatively smooth; the first threshold function and the second threshold function remove relatively smaller wavelet coefficients, the third threshold function removes relatively larger wavelet coefficients, local characteristics such as parameter analog signal edges and the like are reserved, and the obtained parameter analog signal is relatively smooth; the wavelet coefficient is divided into two cases for processing, so that the partial characteristics of the edges of the parameter analog signals and the like are complete, the parameter analog signals are relatively smooth, the defect of adopting a threshold function is avoided, the denoising reproduction of the analog signals is realized, and the integrity of the analog signals is ensured.
Example 8
As shown in fig. 8, on the basis of embodiment 1, the central control module provided in the embodiment of the present application includes:
the target parameter determining submodule is responsible for determining sterilization target parameters to be optimized, and the sterilization parameters comprise: the first type of parameters are that the same concentration ozone is needed under different vacuum negative pressure values, and the container sterilization rate under different vacuum negative pressure values is calculated; the second type of parameters are container sterilization rates with different ozone concentration values under the same vacuum negative pressure value condition; the third type of parameters are used for calculating container sterilization rates of different vibration intensity values and different vibration time values under the condition of the same negative pressure value and ozone concentration value; a fourth type of parameters, namely calculating the container sterilization rate at different times under the condition that the vacuum negative pressure value, the ozone concentration value, the vibration intensity value and the vibration time value are fixed values;
the target parameter sequencing sub-module is responsible for sequencing the sterilization target parameters to be optimized of the first type of parameters, the second type of parameters, the third type of parameters and the fourth type of parameters from large to small according to the sterilization rate;
the target parameter set submodule is responsible for extracting sterilization target parameters, the sterilization rate of which reaches a sterilization rate threshold value, from sterilization target parameters to be optimized, and forming an optimized sterilization target parameter set;
and the sterilization parameter optimization sub-module is responsible for selecting a vacuum negative pressure value, an ozone concentration value, a vibration intensity value and a vibration time value which reach a sterilization rate threshold value from an optimized sterilization target parameter set through an objective function, wherein the vacuum negative pressure value, the ozone concentration value, the vibration intensity value and the vibration time value are the container optimized sterilization parameters.
The working principle and beneficial effects of the technical scheme are as follows: the target parameter determining submodule of the scheme determines target parameters to be optimized, wherein the target parameters include: the first type of parameters are that the same concentration ozone is needed under different vacuum negative pressure values, and the container sterilization rate under different vacuum negative pressure values is calculated; the second type of parameters are container sterilization rates with different ozone concentration values under the same vacuum negative pressure value condition; the third type of parameters are used for calculating container sterilization rates of different vibration intensity values and different vibration time values under the condition of the same negative pressure value and ozone concentration value; a fourth type of parameters, namely calculating the container sterilization rate at different times under the condition that the vacuum negative pressure value, the ozone concentration value, the vibration intensity value and the vibration time value are fixed values; the target parameter sequencing submodule sequences the sterilization target parameters to be optimized of the first type of parameters, the second type of parameters, the third type of parameters and the fourth type of parameters from large to small according to the sterilization rate; the target parameter set submodule extracts sterilization target parameters, the sterilization rate of which reaches a sterilization rate threshold value, from sterilization target parameters to be optimized, and an optimized sterilization target parameter set is formed; the sterilization parameter optimization submodule selects a vacuum negative pressure value, an ozone concentration value, a vibration intensity value and a vibration time value which reach a sterilization rate threshold value from an optimized sterilization target parameter set through an objective function, and the vacuum negative pressure value, the ozone concentration value, the vibration intensity value and the vibration time value are sterilization parameters of container optimization. According to the method, the sterilization target parameters to be optimized of the first type parameters, the second type parameters, the third type parameters and the fourth type parameters are respectively sequenced according to the sterilization rate from large to small, the sterilization rate is used as a sequencing standard, the container is used as a target for achieving the highest sterilization rate, on one hand, the method is combined with the sterilization requirement of actual container transportation, on the other hand, the parameter selection efficiency is improved through sequencing, and the parameter processing time is shortened; and selecting a vacuum negative pressure value, an ozone concentration value, a vibration intensity value and a vibration time value which reach a sterilization rate threshold value from the optimized sterilization target parameter set through an objective function, obtaining target parameters suitable for a transportation environment from the optimized sterilization target parameter set through an objective function preset by a central control module, realizing the highest sterilization rate under the transportation environment, protecting the safety of goods and personnel, and reducing the transmission of germs.
Example 9
As shown in fig. 9, on the basis of embodiment 1, the central control module provided by the embodiment of the application is connected with an ozone generating array sub-module and a flow meter, the flow meter is connected with a negative pressure meter and a vacuum pump, the ozone generating array sub-module and the negative pressure meter are connected with a container simulation module, the container simulation module is arranged on a vibration control module, and the ozone treatment module is connected with the vacuum pump.
An ozone generation array submodule which is responsible for generating ozone with different concentrations which is transmitted to the interior of the container for sterilization;
the flowmeter is responsible for measuring the rate of air extraction and ozone when the container is vacuumized;
the negative pressure meter is responsible for measuring the vacuum degree in the container;
a vacuum pump responsible for performing air and ozone extraction equipment for the container;
and the ozone treatment module is responsible for treating ozone pumped by the vacuum pump and avoiding leakage.
The working principle and beneficial effects of the technical scheme are as follows: the central control module is connected with the ozone generating array sub-module and the flowmeter, the flowmeter is connected with the negative pressure meter and the vacuum pump, the ozone generating array sub-module and the negative pressure meter are connected with the container simulation module, the container simulation module is arranged on the vibration control module, and the ozone treatment module is connected with the vacuum pump; the ozone generating array submodule is arranged for providing ozone with different concentrations for the container, so that the ozone concentration with the optimal sterilization rate can be obtained conveniently; setting a flowmeter, a negative pressure meter and a vacuum pump to realize the vacuumizing treatment of the container and realize the test of the influence of different negative pressure values on the sterilization rate; the ozone treatment module realizes the treatment of ozone in the test process, and avoids polluted air and leakage.
The application is not limited to the above illustrated embodiments, and not only ozone, but also other fumigation gas mediums can be used, including but not limited to peracetic acid, ethylene oxide, phosphane, etc.; other fumigation gas mediums can be exchanged using the same system of the present application such as: peracetic acid, ethylene oxide, phosphane, etc. should be included within the scope of the present system.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (2)
1. A test system for evaluating the disinfection effect of a container, comprising:
the container simulation module is responsible for simulating the internal environment of the container and realizing the measurement of the sterilization rate under different conditions;
the vibration control module is responsible for simulating the vibration in the container transportation process;
the parameter measurement module is connected with the container simulation module and is responsible for measuring the vacuum negative pressure value, the ozone concentration value, the vibration intensity value and the vibration time value in the container;
the central control module is connected with the parameter measurement module and is responsible for receiving parameters of a vacuum negative pressure value, an ozone concentration value, a vibration intensity value and a vibration time value, and obtaining optimized sterilization parameters of the container by combining the sterilization rate;
the different conditions include: the amount of the supplementary ozone under different vacuum negative pressure values, the concentration of the ozone under the same vacuum negative pressure value, the vibration intensity and the vibration time under the same negative pressure value and the concentration of the ozone, and the time under the certain conditions of the vacuum negative pressure value, the concentration of the ozone, the vibration intensity and the vibration time;
a container simulation module comprising:
an ozone concentration sensor for measuring the concentration of ozone in the container;
the vacuum negative pressure sensor is responsible for measuring the vacuum negative pressure value in the container;
the vibration intensity sensor is responsible for measuring the vibration intensity value of the container;
the timer is connected with the ozone concentration sensor, the vacuum negative pressure sensor and the vibration intensity sensor, receives the control of the central control module, and calculates and adjusts the ozone concentration, the vacuum negative pressure value and the vibration time;
a vibration control module, comprising:
the transportation environment simulation sub-module is responsible for setting the vibration frequency corresponding to the transportation environment; the transportation environment comprises: highway, railway, aeronautical and maritime traffic;
the vibration time setting submodule is responsible for setting the execution time of the current vibration frequency;
the vibration table frame module is responsible for fixing the container and executing the set vibration frequency;
the vibration table frame submodule includes: a motor slip frequency control unit responsible for executing a vibration frequency of a transportation environment simulation sub-module, the motor slip frequency control unit comprising:
the current acquisition subunit is responsible for obtaining torque current and exciting current in a rotating coordinate by coordinate transformation of the three-phase current detected to be input into the motor;
the model conversion subunit is responsible for sending the torque current and the exciting current into the current loop together for adjustment, and the output is subjected to current-voltage model conversion;
the motor control subunit is responsible for controlling the inverter to output three-phase voltage through space vector pulse width modulation so as to control the motor;
a parameter determination module comprising:
the first type of parameter acquisition submodule is responsible for acquiring the ozone quantity with the same concentration under different vacuum negative pressure values and calculating the container sterilization rate under different vacuum negative pressure values;
the second type of parameter acquisition submodule is responsible for acquiring container sterilization rates of different ozone concentration values under the same vacuum negative pressure value condition;
the third type of parameter acquisition submodule is responsible for calculating container sterilization rates of different vibration intensity values and vibration time values under the condition of the same negative pressure value and ozone concentration value;
a fourth type of parameter acquisition submodule is responsible for calculating the container sterilization rate under different time under the condition that the vacuum negative pressure value, the ozone concentration value, the vibration intensity value and the vibration time value are fixed values;
the parameter processing sub-module is in charge of receiving all parameters of the first type parameter acquisition sub-module, the second type parameter acquisition sub-module, the third type parameter acquisition sub-module and the fourth type parameter acquisition sub-module, obtaining digital signals of all parameters by analog-to-digital conversion modules of analog signals of all parameters, identifying and distinguishing the digital signals, and forming form table data for display;
a parameter processing sub-module comprising:
the analog signal decomposition unit is responsible for performing three-layer wavelet decomposition on analog signals of the first type parameter acquisition sub-module, the second type parameter acquisition sub-module, the third type parameter acquisition sub-module and the fourth type parameter acquisition sub-module;
the threshold denoising unit is responsible for performing threshold denoising processing on the wavelet coefficients in the wavelet transform domain;
the analog signal reconstruction unit is responsible for carrying out wavelet inverse transformation on the denoised wavelet coefficient to reconstruct an analog signal;
a central control module, comprising:
the target parameter determining submodule is responsible for determining sterilization target parameters to be optimized;
the target parameter sequencing sub-module is responsible for sequencing the sterilization target parameters to be optimized of the first type of parameters, the second type of parameters, the third type of parameters and the fourth type of parameters from large to small according to the sterilization rate;
the target parameter set submodule is responsible for extracting sterilization target parameters, the sterilization rate of which reaches a sterilization rate threshold value, from sterilization target parameters to be optimized, and forming an optimized sterilization target parameter set;
the sterilization parameter optimization sub-module is responsible for selecting a vacuum negative pressure value, an ozone concentration value, a vibration intensity value and a vibration time value which reach a sterilization rate threshold value from an optimized sterilization target parameter set through an objective function, wherein the vacuum negative pressure value, the ozone concentration value, the vibration intensity value and the vibration time value are optimized sterilization parameters of the container;
the central control module is connected with an ozone generation array sub-module and a flow meter, the flow meter is connected with a negative pressure meter and a vacuum pump, the ozone generation array sub-module and the negative pressure meter are connected with a container simulation module, the container simulation module is arranged on the vibration control module, and the ozone treatment module is connected with the vacuum pump;
an ozone generation array submodule which is responsible for generating ozone with different concentrations which is transmitted to the interior of the container for sterilization;
the flowmeter is responsible for measuring the rate of air extraction and ozone when the container is vacuumized;
the negative pressure meter is responsible for measuring the vacuum degree in the container;
a vacuum pump responsible for performing air and ozone extraction equipment for the container;
and the ozone treatment module is responsible for treating the ozone pumped by the vacuum pump.
2. The test system for evaluating the disinfection effectiveness of a container of claim 1, wherein the timer includes a time error correction module responsible for calibrating the time of the timer; a time error correction module comprising:
a correction time setting sub-module, which is responsible for setting the interval of the time counter calibration time, wherein the interval is set to 15min, 30min or 60min from a certain integral point as a starting point;
the time reading sub-module is used for reading the current time of the timer reaching the setting time of the correction time setting sub-module and reading the standard time through a network;
the first error calculation module is in charge of comparing the standard time with the current time to obtain an error value, and when the first error value is in a threshold range, starting time calibration to synchronize the time of the timer with the standard time;
and the second error calculation module is responsible for gradually decrementing the current time when the first error value exceeds the threshold range until the first error value is within the threshold range, restarting time calibration, and synchronizing the time of the timer with the standard time.
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