Air disinfection system and method of use

Abstract

The present invention relates to the technical field of air disinfection. The present invention discloses an air disinfection system and a method for using the air disinfection system. The air disinfection system comprises an air disinfection module arranged on a wall above a bedside in a ward, wherein a power adjustment unit is arranged at the air disinfection module, and each of the air disinfection modules is arranged with an audio collection module. The air disinfection modules also comprise a daytime control component and a nighttime control component. The daytime control component is composed of a master control terminal, a time delay estimation module, and the power adjustment unit, wherein the air disinfection modules in each ward are divided into a group. An audio collection module is added to the air disinfection module, and the air disinfection module adopts a variable frequency fan. The power of the fan is controlled by the power adjustment unit through the coordinated cooperation of the audio collection module and the master control terminal, so that the power of the fan is dynamically matched with the environment, characteristics, and personnel distribution, so that the filtration and removal of air viruses are more targeted, thereby saving electric energy and increasing the life of the filtering mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of air disinfection, and in particular to an air disinfection system and a use method thereof. Background Art

[0002] Due to the patient's condition in the respiratory ward, there are many air-transmitted bacteria in the ward, so an air disinfection device is needed. Since the hospital ward is small, in order to avoid occupying the passage space, most of them will use wall-mounted air disinfectors. The wall-mounted air disinfector is installed above the wall near the head of the bed. At this time, the air disinfector is close to the patient's head, making it easier to inhale and filter the patient's breathing gas, thereby avoiding the increase of air bacteria in the ward and causing a slow recovery cycle.

[0003] However, the above situation only occurs under ideal conditions. The ideal situation is that the patient is always in bed. During this stage, the fan of the air sterilizer runs at low power, which can draw air in the patient's head area for filtration. However, in the actual ward during the day, patients will exercise, check, etc. If the fan runs at a low frequency, the air absorbed by the fan is small, and the area where bacteria are produced is at the patient's position, so the air disinfection effect is not good. If the fan is always running at a high frequency, the patient is not always in the ward. At this time, the amount of bacteria in the air is small, and the high-flow filtration causes the filter element life to be reduced and the effect is not great, and it also wastes electricity. Therefore, the dynamically controlled wall-mounted air sterilizer is more suitable for the use of the ward environment. Summary of the invention

[0004] The purpose of the present invention is to provide an air disinfection system and a method of use, which can link wall-mounted air disinfectors, increase the air intake range and filtration power in a large flow manner at the peak period when viruses enter the air according to the characteristics of time, characteristics, and personnel distribution, thereby solving the problem that the wall-mounted air disinfector has low power and cannot match the characteristic variables of the ward environment, while saving electricity, increasing the life of the filter element and ensuring the cleanliness of the air, which is suitable for hospital use.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An air disinfection system, comprising air disinfection modules arranged on the wall above the bedside of a ward, the number of the air disinfection modules corresponding to the number of beds, a power adjustment unit arranged at the air disinfection module, an audio collection module arranged on each of the air disinfection modules, and also comprising a day control component and a night control component;

[0007] The daytime control component is composed of a master control terminal, a time delay estimation module, and the power adjustment unit, wherein the air disinfection modules in each ward are divided into a group, and the sound collected by the audio collection module is located in a single group through the time delay estimation module, and the air disinfection module at the closest distance collected by the time delay estimation module is regulated through the power start control module, and the fan power of the air disinfection module is adjusted according to the distance;

[0008] Night control component: It is composed of an audio filtering unit, the time delay estimation module, and the power adjustment unit. The time delay estimation module locates and measures the sound, obtains the sound of interest through the audio filtering unit, and controls the power adjustment unit to adjust the fan power according to the sound of interest.

[0009] As a further solution of the present invention: the night control component also includes a high-power duration superposition unit, which controls the high-power working duration of the power adjustment unit. The high-power duration superposition unit adds a fixed startup duration and superimposes it every time the audio filtering unit obtains a key interest sound.

[0010] As a further solution of the present invention: a power recording module is also provided in the master control terminal, and the power recording module records the power information and working time information of the power adjustment unit in the air disinfection module, and updates the filter element life in real time.

[0011] As a further solution of the present invention: the sounds of interest include coughing, snoring, and sneezing. The audio filtering unit converts the noisy signal into a noisy spectrum through FFT, performs windowing processing on the spectrum, and converts the processed spectrum into a time-frequency signal through IFFT for output.

[0012] As a further solution of the present invention: the night control component is also provided with a pressure sensor, and the pressure sensor is arranged on the bed. During the day, the night control component is controlled to open by sensing the pressure applied by a person through the pressure sensor.

[0013] As a further solution of the present invention: under normal conditions, the air disinfection modules are all in a low-power working state.

[0014] As a further solution of the present invention, a method for using an air disinfection system comprises:

[0015] A: During the day, due to the influence of patient examination and treatment, the distribution of people in the ward is not fixed. At this time, the daytime control component is started. During the start-up process of the daytime control component, the time delay distance estimation module always collects sound, and obtains the distance between the occurrence point and itself through the time delay distance estimation module. The air disinfection module closest to the sound source is started through the master control end, and the fan power of the air disinfection module closest to the sound source is adjusted according to the distance, where the fan power is proportional to the sound distance;

[0016] B: At night or when the bed is under pressure, start the night control component, determine the air disinfection module closest to the sound source through the time delay estimation module, filter the information collected by the audio acquisition module through the audio filtering unit, obtain the sound of interest according to the sound frequency, and after the sound of interest appears, control the fan power through the power adjustment unit, and increase the high-power working time of the fan of the air disinfection module through the high-power duration superposition unit. When the fan is working at high power, the audio filtering unit obtains the sound of interest again, and then superimposes the working time through the high-power duration superposition unit.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] An audio acquisition module is added to the air disinfection module. The air disinfection module adopts a variable frequency fan. The fan power is controlled by the power adjustment unit through the coordinated cooperation of the audio acquisition module and the main control end, so that the fan power is dynamically matched with the environment, characteristics, and personnel distribution, making the air virus filtration and removal more targeted, thereby saving electricity and increasing the life of the filtration mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 It is a schematic diagram of the application of an air disinfection system;

[0021] Figure 2 The present invention is a diagram of an air disinfection system;

[0022] Figure 3 A schematic diagram of a daytime control component in an air disinfection system;

[0023] Figure 4 A schematic diagram of a filter element in an air disinfection system;

[0024] In the figure: 1. Air disinfection module; 11. Power adjustment unit; 12. High-power duration superposition unit; 2. Audio acquisition module; 21. Time delay estimation module; 22. Audio filtering unit; 3. Master control terminal; 31. Power start-up control module; 32. Power recording module. DETAILED DESCRIPTION

[0025] See also Figure 1-Figure 4 : In this embodiment: it includes an air disinfection module 1 arranged on the wall above the bedside of the ward, the number of the air disinfection modules 1 corresponds to the number of beds, a power adjustment unit 11 is provided at the air disinfection module 1, an audio collection module 2 is provided on each air disinfection module 1, and also includes a day control component and a night control component.

[0026] In the present embodiment: the air disinfection module 1 is a wall-mounted air disinfector, which has structures such as a fan, a filter element and a disinfector. It is currently mainly installed on the wall near the head of the bed in the ward, and its main purpose is to filter the gas exhaled from the mouth of the bedridden patient. Therefore, when the patient is not in bed, the air treatment efficiency of the air disinfection module 1 is low. If the fan works at high power, although air can be drawn in a larger range, the virus concentration in the air is low at this time, so the high power is always turned on, which not only wastes electricity but also accelerates the problem of filter element clogging. Therefore, the present technical solution adds an audio acquisition module 2 at the air disinfection module 1. The air disinfection module 1 adopts a variable frequency fan. The power of the fan is controlled by the power adjustment unit 11 through the coordination of the audio acquisition module 2 and the master control terminal 3, so that the fan power is dynamically matched with the environment, characteristics, and personnel distribution, so that the air virus filtration and removal are more targeted, thereby saving electric energy and increasing the life of the filtering mechanism.

[0027] In this embodiment: the daytime control component is composed of a main control terminal 3, a time delay estimation module 21, and a power adjustment unit 11, wherein the air disinfection module 1 of each ward is divided into a group, and the sound collected by the audio collection module 2 is located within the single group through the time delay estimation module 21, and the air disinfection module 1 at the nearest distance collected by the time delay estimation module 21 is controlled by the power start control module 31, and the fan power of the air disinfection module 1 is adjusted according to the distance.

[0028] In this embodiment: During the daytime, most patients are undergoing examinations and treatments, and the bed stay rate is low. Caregivers are often in areas far away from the bedside. Therefore, under normal circumstances, the air disinfection module 1 is in a low-power state. However, after the audio acquisition module 2 acquires the sound information, the time delay distance estimation module 21 can be used to estimate the distance between the sound source and itself. The estimation method is as follows: the audio acquisition module 2 has multiple annularly distributed acquisition microphones. When the same sound source is transmitted to microphones at different positions, a time difference will be generated. This time difference is called time delay. The time delay is multiplied by the speed of sound to obtain the time difference. During the working stage of the daytime control component, the audio filter unit 22 can also intervene in the control component. Since the frequency of human voice generally does not exceed 500Hz, the sound frequency obtained after window filtering by the audio filter unit 22 can filter other noises. Because when people speak, the air viruses in the mouth will be mixed to the outside, and the air pollution is in the aggravation stage at this time.

[0029] In this embodiment: when the daytime control component is started, the power start-up control module 31 is used to control the air disinfection module 1 closest to the sound source obtained by the delay estimation module 21. Whenever the power adjustment unit 11 controls one of the air disinfection modules 1 to turn on, a start time will be set. The start time is set according to demand, such as 1min or 5min, etc. After the air disinfection module 1 is adjusted to high-power on, the audio collection module 2 still acquires sound. If the latest sound acquired is still the air disinfection module 1 that has been regulated, the duration of the air disinfection module 1 is increased through the high-power duration superposition unit 12.

[0030] In this embodiment: when the daytime control component is started, the distance between the sound source and the air disinfection module 1 can also be obtained through the time delay distance estimation module 21, so the fan power of the air disinfection module 1 can be dynamically controlled according to this distance value.

[0031] In this embodiment: Night control component: consists of an audio filtering unit 22, a time delay estimation module 21, and a power adjustment unit 11. The time delay estimation module 21 locates and measures the sound, and obtains the sound of interest through the audio filtering unit 22, and controls the power adjustment unit 11 to adjust the fan power according to the sound of interest. The sounds of interest include: coughing, snoring, and sneezing. The audio filtering unit 22 converts the noisy signal into a noisy spectrum through FFT, performs windowing processing in the spectrum, and converts the processed spectrum into a time-frequency signal through IFFT for output.

[0032] In the present embodiment: Since the patient may snore, cough and sneeze in the ward at night, the patient is at the position closest to the air disinfection module 1 at this time. In order to prevent the sound from being captured by multiple audio collection modules 2 and controlling the air disinfection module 1 to turn on, the time delay estimation module 21 is also used to obtain the closest air disinfection module 1. When the patient is snoring, coughing or sneezing, and the air is quickly contaminated with viruses, the power adjustment unit 11 is used to control the air disinfection module 1 to be in a high-power operation state, so that a large amount of air can be quickly inhaled for filtration, thereby preventing the spread of viruses.

[0033] In this embodiment: when the day control component is activated, when an interesting sound appears, the night control component can also be controlled to turn on, and the high-power duration is increased by the high-power duration superposition unit 12. After the increase, if no abnormal sound occurs, there is no need to increase the duration.

[0034] In this embodiment: the night control component also includes a high-power duration superposition unit 12, which controls the high-power working duration of the power adjustment unit 11. The high-power duration superposition unit 12 adds a fixed startup duration and superimposes it every time the audio filtering unit 22 obtains a key interest sound.

[0035] In this embodiment: Since the sound will appear continuously, and when the sound appears, the virus has entered the air, and there is a time delay for the virus in the air to reach the air disinfection module 1, a high-power time superposition unit 12 is set. Whenever an abnormality occurs and power adjustment is required, the high-power start-up time is increased by one unit through the high-power time superposition unit 12, thereby performing continuous superposition. Only in this way can high power and high virus contamination be matched.

[0036] In this embodiment: a power recording module 32 is also provided in the master control terminal 3, and the power recording module 32 records the power information and working time information of the power adjustment unit 11 in the air disinfection module 1, and updates the filter element life in real time.

[0037] In this embodiment: due to the large gas flux and limited filter element load in the high power stage, and the dynamic nature of the entire process, the life of the filter element is not fixed. Therefore, it is necessary to record the power information and working time information of the power adjustment unit 11 in the air disinfection module 1 through the power recording module 32, and redefine the filter element replacement date based on this information.

[0038] In this embodiment: the night control component is also provided with a pressure sensor, and the pressure sensor is arranged on the bed body. During the day, the night control component senses the pressure applied by a person through the pressure sensor and controls to open.

[0039] In this embodiment: since patients or caregivers may sit on the bed during the day, the necessity of starting the daytime control component is not high, and the personnel are close to the air disinfection module 1, the low-power collection of the air disinfection module 1 can meet the use requirements. Therefore, at this stage, the air disinfection module 1 only needs to add high-power start time through the high-power duration superposition unit 12 based on the occurrence of coughing and sneezing.

[0040] In this embodiment: under normal conditions, the air disinfection module 1 is in a low-power working state. Since there are still a small amount of germs even when there is no one in the room, the air disinfection module 1 is normally turned on at a low power to help maintain the cleanliness of the air.

[0041] A: During the day, due to the influence of patient examination and treatment, the distribution of personnel in the ward is not fixed. At this time, the daytime control component is started. During the start-up process of the daytime control component, the time delay distance estimation module 21 always collects sound, and obtains the distance between the occurrence point and itself through the time delay distance estimation module 21, and starts the air disinfection module 1 closest to the sound source through the master control terminal 3, and adjusts the fan power of the air disinfection module 1 closest to the sound source according to the distance, wherein the fan power is proportional to the sound distance;

[0042] B: At night or when the bed is under pressure, start the night control component, determine the air disinfection module 1 closest to the sound source through the time delay estimation module 21, filter the information collected by the audio acquisition module 2 through the audio filtering unit 22, obtain the sound of interest according to the sound frequency, and after the sound of interest appears, control the fan power through the power adjustment unit 11, and increase the high-power working time of the fan of the air disinfection module 1 through the high-power duration superposition unit 12. When the fan is working at high power, the audio filtering unit 22 obtains the sound of interest again, and then superimposes the working time through the high-power duration superposition unit 12.

[0043] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An air disinfection system, comprising an air disinfection module (1) arranged on a wall above a bed in a ward, the number of the air disinfection modules (1) corresponding to the number of beds, the air disinfection module (1) being provided with a power adjustment unit (11), characterized in that: Each of the air disinfection modules (1) is provided with an audio collection module (2), and also includes a day control component and a night control component; The daytime control component is composed of a master control terminal (3), a time delay estimation module (21), and the power adjustment unit (11), wherein the air disinfection modules (1) of each ward are divided into a group, and the sound collected by the audio collection module (2) is located in the single group through the time delay estimation module (21), and the air disinfection module (1) at the closest distance collected by the time delay estimation module (21) is regulated through the power start control module (31), and the fan power of the air disinfection module (1) is adjusted according to the distance; A night control component: It is composed of an audio filtering unit (22), the time delay estimation module (21), and the power adjustment unit (11). The time delay estimation module (21) locates and measures the sound, obtains the sound of interest through the audio filtering unit (22), and controls the power adjustment unit (11) to adjust the fan power according to the sound of interest.

2. An air disinfection system according to claim 1, characterized in that: The night control component also includes a high-power duration superposition unit (12), which controls the high-power working duration of the power adjustment unit (11). Each time the audio filtering unit (22) obtains a key interest sound, the high-power duration superposition unit (12) adds a fixed start-up duration and performs superposition.

3. An air disinfection system according to claim 1, characterized in that: The master control terminal (3) is also provided with a power recording module (32), and the power recording module (32) records the power information and working time information of the power adjustment unit (11) in the air disinfection module (1), and updates the filter element life in real time.

4. An air disinfection system according to claim 1, characterized in that: The sounds of interest include coughing, snoring and sneezing. The audio filtering unit (22) converts the noisy signal into a noisy spectrum through FFT, performs windowing processing on the spectrum, and converts the processed spectrum into a time-frequency signal through IFFT for output.

5. An air disinfection system according to claim 1, characterized in that: The night control component is also provided with a pressure sensor, and the pressure sensor is arranged on the bed body. During the day, the night control component is controlled to open by sensing the pressure applied by a person through the pressure sensor.

6. An air disinfection system according to claim 1, characterized in that: In a normal state, the air disinfection module (1) is in a low-power working state.

7. The method for using the air disinfection system according to claim 2, characterized in that: include: A: During the day, due to the influence of patient examination and treatment, the distribution of people in the ward is not fixed. At this time, the daytime control component is started. During the process of starting the daytime control component, the time delay distance estimation module (21) always collects sound, and obtains the distance between the occurrence point and itself through the time delay distance estimation module (21). The air disinfection module (1) closest to the sound source is started through the main control terminal (3), and the fan power of the air disinfection module (1) closest to the sound source is adjusted according to the distance, wherein the fan power is proportional to the sound distance; B: At night or when the bed is under pressure, the night control component is activated, and the air disinfection module (1) closest to the sound source is determined through the time delay estimation module (21). The information collected by the audio collection module (2) is filtered through the audio filtering unit (22), and the sound of interest is obtained according to the sound frequency. After the sound of interest appears, the fan power is controlled through the power adjustment unit (11), and the high-power duration superposition unit (12) increases the high-power working time of the fan of the air disinfection module (1). When the fan is working at high power, the audio filtering unit (22) obtains the sound of interest again, and then superimposes the working time through the high-power duration superposition unit (12).

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