Method for rapidly testing bacteria filtering efficiency of mask

Abstract

The invention discloses a method for rapidly testing the bacteria filtering efficiency of a mask, and relates to the technical field of filtering efficiency testing. The liquid level sensor is used for counting and measuring liquid before injection, the liquid flow sensor is used for measuring the amount of the injected liquid, the air flow sensor is used for measuring the injected liquid, and the timer is used for monitoring the injection time and recording the injection time and the passing time. The data obtained by subtracting the injection amount from the throughput is divided by the recording time to obtain the filtering amount of the mask, namely, the filtering efficiency of the mask can be obtained, and the timer has the time control purpose, namely, the filtering efficiency of the mask in unit time can be calculated; the injection quantity statistical unit and the throughput statistical unit work synchronously, it can be guaranteed that external conditions during sampling are consistent, test accuracy deviation cannot be caused, multiple tests are not needed, the test process is simple, and the accuracy is good.

Description

Technical Field

[0001] The invention relates to the technical field of filtration efficiency measurement, and in particular to a method for quickly testing the bacterial filtration efficiency of a mask. Background Art

[0002] Medical surgical masks are widely used in high-demand environments such as medical clinics, laboratories, and operating rooms. They protect against the spread of blood, body fluids, and splashes during invasive procedures. They have a relatively high safety factor and strong barrier capabilities against bacteria and viruses. To ensure the safety and comfort of wearing masks, regulations have been made on the gas exchange performance, particle filtration performance, and bacterial filtration performance of masks.

[0003] The bacterial filtration efficiency of a mask refers to the ability of the mask to filter out bacterial particles under specified conditions, among which the Staphylococcus aureus method is the most widely used. However, the existing testing equipment uses a set of sampling gas circuits to first sample without a mask at the sampler end, then sample again after adding a mask to the sampler end, and then culture and count the samples of the two samples. The filtration efficiency of the mask is determined by comparing the number of colonies in the two samples; however, since the two samplings are not carried out at the same time, the conditions during the two samplings will not be completely consistent, resulting in deviations in the accuracy of the test data. Multiple tests at the same time also make the test process more cumbersome. For this reason, we propose a method for quickly testing the bacterial filtration efficiency of masks. Summary of the invention

[0004] The purpose of the present invention is to solve the problems mentioned in the above background technology, and provide a method for quickly testing the bacterial filtration efficiency of a mask.

[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0006] A method for quickly testing the bacterial filtration efficiency of a mask, comprising a testing system, wherein the testing system comprises:

[0007] An injection volume statistics unit is used to count the flow before injection;

[0008] A throughput statistics unit is used to count the traffic after it passes through;

[0009] The data storage unit is used to store data.

[0010] Furthermore, the injection volume statistics unit includes: a liquid level sensor, a liquid flow sensor, an air flow sensor and a timer, wherein the liquid level sensor is used to perform statistical measurements on the liquid before injection, the liquid flow sensor is used to measure the amount of injected liquid, the air flow sensor is used to measure the injected liquid, and the timer is used to monitor the injection time.

[0011] Furthermore, the throughput statistics unit includes: physical data parameters, a data comparison module, a data display module and a central processing unit, wherein the physical data parameters are used to collect the throughput, the data comparison module is used to compare the collected parameters with preset data, the data display module is used to display the data after the comparison, and the central processing unit is used to upload the compared data to the data storage unit.

[0012] Furthermore, the physical data parameters include gas flow parameters, liquid flow parameters and concentration parameters, wherein the gas flow parameters are used to measure the amount of gas passing through, the liquid flow parameters are used to measure the amount of liquid passing through, and the concentration parameters are used to measure the concentration of the passing gas and liquid.

[0013] Furthermore, the central processing unit and the data storage unit are both provided with communication network ports, and are physically connected via network cables.

[0014] Furthermore, the data display module is a display screen, and the data display module is connected to the central processor via a wireless network.

[0015] Furthermore, the measuring instruments for the concentration parameters are selected from toxic and harmful gas detectors and liquid concentration detectors, wherein the toxic and harmful gas detectors are used to detect the concentration of gases, and the liquid concentration detectors are used to detect the concentration of liquids.

[0016] Furthermore, the data storage unit includes: a mobile hard disk and a cloud database.

[0017] Further, the following steps are included:

[0018] S1. Counting the flow rate before injection through the injection amount counting unit: Counting and measuring the liquid before injection through the liquid level sensor, measuring the amount of injected liquid through the liquid flow sensor, measuring the injected liquid through the air flow sensor, and monitoring the injection time through the timer;

[0019] S2. Counting the traffic after passing through by the throughput statistics unit: collecting the throughput through physical data parameters, comparing the collected parameters with the preset data through the data comparison module, displaying the compared data through the data display module, and uploading the compared data to the data storage unit through the central processor;

[0020] S3. The data uploaded by the central processor is stored in the data storage unit.

[0021] The beneficial effects of the present invention are as follows:

[0022] 1. The liquid level sensor of the present invention is used to perform statistical measurement on the liquid before injection, the liquid flow sensor is used to measure the amount of liquid injected, the air flow sensor is used to measure the injected liquid, and the timer is used to monitor the injection time, and the injection time and the passing time are recorded. The data obtained by subtracting the injection amount from the passing amount is divided by the recording time to obtain the filtration amount of the mask, that is, the filtration efficiency of the mask can be obtained, and the timer has the purpose of time control, that is, the filtration efficiency of the mask per unit time can be calculated.

[0023] 2. The injection volume statistics unit and the throughput statistics unit of the present invention work synchronously, which can ensure that the external conditions during sampling are consistent, will not cause deviations in the accuracy of the test, and do not require multiple tests. The test process is simple and has good accuracy. All devices in the system are placed in a sterile chamber, which will not cause the growth of bacteria to affect the actual detection accuracy, and can achieve the purpose of protecting the detection personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a working block diagram of the present invention;

[0025] Figure 2 It is a working block diagram of the physical data parameters in the present invention;

[0026] Figure 3 It is a working block diagram of the data storage unit in the present invention;

[0027] Figure 4 It is a work flow chart of the present invention. DETAILED DESCRIPTION

[0028] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0029] See also Figure 1 - Figure 4 The present invention provides a method for quickly testing the bacterial filtration efficiency of a mask, including a testing system, the testing system comprising:

[0030] The injection volume statistics unit is used to count the flow rate before injection; the liquid volume and gas volume before injection are recorded and archived for subsequent comparison. The injection volume statistics unit includes: a liquid level sensor, a liquid flow sensor, an air flow sensor and a timer, wherein the liquid level sensor is used to perform statistical measurements on the liquid before injection, the liquid flow sensor is used to measure the amount of liquid injected, the air flow sensor is used to measure the injected liquid, and the timer is used to monitor the injection time, record the injection time and the passing time, and divide the data obtained by subtracting the injection volume from the passing volume by the recording time to obtain the filtration volume of the mask, that is, the filtration efficiency of the mask can be obtained, and the timer has the purpose of time control, that is, it can calculate the filtration efficiency of the mask per unit time.

[0031] The throughput statistics unit is used to count the flow after passing through; record the amount of liquid and gas passing through, and compare it with the recorded amount before injection. The throughput statistics unit includes: physical data parameters, data comparison module, data display module and central processing unit, wherein the physical data parameters are used to collect the throughput, and the physical data parameters include gas flow passing parameters, liquid flow passing parameters and concentration parameters, wherein the gas flow passing parameters are used to measure the gas throughput, the liquid flow passing parameters are used to measure the liquid throughput, and the concentration parameters are used to measure the concentration of the passing gas and liquid; the data comparison module is used to compare the collected parameters with the preset data, and the data display module is used to display the data after the comparison is completed. The data display module uses a display screen, and the data display module is connected to the central processing unit through a wireless network. connection; under the action of the wireless network, stable data transmission can be achieved; the central processing unit is used to upload the compared data to the data storage unit, and both the central processing unit and the data storage unit are provided with communication network ports, which form a physical connection through the network cable; under the action of the communication network port, the installation purpose of the network cable can be guaranteed, and under the action of the network cable, data connectivity between the central processing unit and the data storage unit can be achieved; the measuring instruments for concentration parameters include toxic and harmful gas detectors and liquid concentration detectors, among which the toxic and harmful gas detectors are used to detect the concentration of gases, and the liquid concentration detectors are used to detect the concentration of liquids. By comparing the concentration detection of gases and liquids, the filtration amount can be obtained, thereby the filtration efficiency can be calculated.

[0032] The injection quantity statistics unit and the flow quantity statistics unit work synchronously, which can ensure the consistency of external conditions during sampling, will not cause deviation in the accuracy of the test, and does not require multiple tests. The test process is simple and has good accuracy.

[0033] The data storage unit is used to store data and effectively store the data after comparison. The data storage unit includes: a mobile hard disk and a cloud database; the data is effectively recorded in the mobile hard disk and the cloud database for subsequent retrieval and use.

[0034] It should be noted that all devices in the system are placed in a sterile chamber, which will not cause the growth of bacteria to affect the actual detection accuracy, and can achieve the purpose of protecting the detection personnel.

[0035] The working principle and use process of the present invention include the following steps:

[0036] S1. Counting the flow rate before injection through the injection amount counting unit: Counting and measuring the liquid before injection through the liquid level sensor, measuring the amount of injected liquid through the liquid flow sensor, measuring the injected liquid through the air flow sensor, and monitoring the injection time through the timer;

[0037] S2. Counting the traffic after passing through by the throughput statistics unit: collecting the throughput through physical data parameters, comparing the collected parameters with the preset data through the data comparison module, displaying the compared data through the data display module, and uploading the compared data to the data storage unit through the central processor;

[0038] S3. The data uploaded by the central processor is stored in the data storage unit.

[0039] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for quickly testing the bacterial filtration efficiency of a mask, characterized in that: A test system is included, the test system comprising: An injection volume statistics unit is used to count the flow before injection; A throughput statistics unit is used to count the traffic after it passes through; The data storage unit is used to store data.

2. A method for rapidly testing the bacterial filtration efficiency of a mask according to claim 1, characterized in that: The injection volume statistics unit includes: a liquid level sensor, a liquid flow sensor, an air flow sensor and a timer, wherein the liquid level sensor is used to perform statistical measurements on the liquid before injection, the liquid flow sensor is used to measure the amount of injected liquid, the air flow sensor is used to measure the injected liquid, and the timer is used to monitor the injection time.

3. A method for rapidly testing the bacterial filtration efficiency of a mask according to claim 1, characterized in that: The throughput statistics unit includes: physical data parameters, a data comparison module, a data display module and a central processing unit, wherein the physical data parameters are used to collect the throughput, the data comparison module is used to compare the collected parameters with preset data, the data display module is used to display the data after the comparison, and the central processing unit is used to upload the compared data to the data storage unit.

4. A method for rapidly testing the bacterial filtration efficiency of a mask according to claim 3, characterized in that: The physical data parameters include gas flow parameters, liquid flow parameters and concentration parameters, wherein the gas flow parameters are used to measure the amount of gas passing through, the liquid flow parameters are used to measure the amount of liquid passing through, and the concentration parameters are used to measure the concentration of the passing gas and liquid.

5. A method for rapidly testing the bacterial filtration efficiency of a mask according to claim 3, characterized in that: The central processing unit and the data storage unit are both provided with communication network ports, and are physically connected via network cables.

6. A method for rapidly testing the bacterial filtration efficiency of a mask according to claim 3, characterized in that: The data display module is a display screen, and the data display module is connected to the central processor via a wireless network.

7. A method for rapidly testing the bacterial filtration efficiency of a mask according to claim 4, characterized in that: The measuring instruments for the concentration parameters are selected from toxic and harmful gas detectors and liquid concentration detectors, wherein the toxic and harmful gas detectors are used to detect the concentration of gases, and the liquid concentration detectors are used to detect the concentration of liquids.

8. A method for rapidly testing the bacterial filtration efficiency of a mask according to claim 1, characterized in that: The data storage unit includes: a mobile hard disk and a cloud database.

9. A method for rapidly testing the bacterial filtration efficiency of a mask according to claim 1, characterized in that: The steps include: S1. Counting the flow rate before injection through the injection amount counting unit: Counting and measuring the liquid before injection through the liquid level sensor, measuring the amount of injected liquid through the liquid flow sensor, measuring the injected liquid through the air flow sensor, and monitoring the injection time through the timer; S2. Counting the traffic after passing through by the throughput statistics unit: collecting the throughput through physical data parameters, comparing the collected parameters with the preset data through the data comparison module, displaying the compared data through the data display module, and uploading the compared data to the data storage unit through the central processor; S3. The data uploaded by the central processor is stored in the data storage unit.

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