Indoor air purification device and control method thereof

Abstract

An indoor air purification device and a control method thereof, the device comprising an air purification module, a detection module, a control module, a recording and storage module, a random number generation module, a comparison module, and a power supply; the indoor air purification device and the control method thereof provided by the present invention are achieved by adding a recording and storage module, a random number generation module, and a comparison module to the air purification device, thereby controlling the air purification module to purify the indoor air according to the living habits of indoor occupants even when an error occurs in the detection equipment.

Description

Technical Field

[0001] The present invention belongs to the technical field of air purification devices, and in particular relates to an indoor air purification device and a control method thereof. Background Art

[0002] With the continuous development of the national economy and the continuous improvement of living standards, people have increasingly stringent requirements for air quality in their homes and offices. This is particularly true for modern indoor air pollution, which includes harmful gases such as formaldehyde and benzene released by decoration materials, inhalable particulate matter PM10, inhalable particulate matter PM2.5, and various bacteria. While people pay attention to the overall home environment, they are also paying attention to the control and management of home appliances. Traditional management methods no longer meet people's demands for intelligent, comfortable, and simple home environments. However, the accuracy of intelligent management systems is less than 100%, and there is a risk of errors. The sensors or detection systems in current air purification devices are mostly designed to detect various air pollutants such as alcohol, cigarette smoke, ammonia, and sulfides. Due to the wide variety of pollutants detected and the inherent error rate of the sensors, air detection systems have a high error rate during the detection process. When errors occur, people will inevitably breathe in harmful gases indoors, causing prolonged discomfort. Summary of the Invention

[0003] In order to address the above-mentioned issues and overcome the error rate of intelligent detection equipment such as air detection systems or sensors, the present invention provides an indoor air purification device and a control method thereof. By adding a recording storage module, a random number generation module, and a comparison module to the air purification device, the air purification module is controlled to purify the indoor air according to the living habits of indoor occupants even when errors occur in the detection equipment.

[0004] The present invention adopts the following technical solutions to achieve the above purpose:

[0005] An indoor air purification device comprises an air purification module (1), a detection module (2), a control module (3), a recording and storage module (4), a random number generation module (5), a comparison module (6), and a power supply (11); the power supply (11) is electrically connected to the air purification module (1), the detection module (2), the control module (3), the recording and storage module (4), the random number generation module (5), and the comparison module (6); the air purification module (1), the control module (3), the recording and storage module (4), the random number generation module (5), and the comparison module (6) are respectively provided with a signal input end and a signal output end, and the detection module (2) is provided with a signal input end. Output end; the signal output end of the air purification module (1) is connected to the signal input end of the recording and storage module (4); the signal output end of the detection module (2) is respectively connected to the signal input end of the control module (3) and the recording and storage module (4); the signal output end of the control module (3) is connected to the signal input end of the air purification module (1); the signal output end of the recording and storage module (4) is respectively connected to the signal input end of the random number generation module (5) and the comparison module (6); the signal output end of the random number generation module (5) is connected to the signal input end of the comparison module (6); and the signal output end of the comparison module (6) is connected to the signal input end of the control module (3).

[0006] A further technical solution is that the detection module (2) contains one or both of a VOC sensor and a particulate matter sensor.

[0007] A further technical solution is that the random number generating module (5) is a Monte Carlo random number generator.

[0008] A further technical solution is that the recording storage module (4) is capable of recording 7 days of operating data.

[0009] A method for controlling an indoor air purification device comprises the following steps:

[0010] Step a: Turn on the power and go to step b;

[0011] Step b, the detection module (2) detects the indoor air, and then goes to step c;

[0012] Step c: The detection module (2) determines whether the air needs to be purified:

[0013] If the detection module (2) determines that purification is required, the detection module (2) sends a signal to the control module (3), and the process goes to step e; if the detection module (2) determines that purification is not required, in this case, there is a possibility that the detection module (2) has made a mistake, the detection module (2) sends a signal to the recording and storage module (4), and the process goes to step d;

[0014] Step d: The comparison module (6) determines whether air purification is required based on the working records of the air purification module (1) over the previous N days:

[0015] The record storage module (4) sends a signal to the random number generation module (5) and the comparison module (6). The random number generation module (5) generates a number m (0≤m≤1). The comparison module (6) calculates the probability p of the air purification module (1) being in the operating state at that moment in the records of the previous N days. The random number generation module (5) sends a signal to the comparison module (6). The comparison module (6) calculates the size of m and p. If m≤p, the comparison module (6) sends a signal to the control module (3) and goes to step e. If m>p, the comparison module (6) sends a signal to the control module (3) and goes to step f.

[0016] in, n is the number of days in the previous N days during which the air purification module (1) was in operation at that moment;

[0017] Step e: Run the air purification module (1):

[0018] The control module (3) sends an operation signal to the air purification module (1), the air purification module (1) sends a recording signal to the recording storage module (4), the recording storage module (4) records the operation time of the air purification module (1), and then goes to step b;

[0019] Step f: Turn off the air purification module (1):

[0020] The control module (3) sends a shutdown signal to the air purification module (1), and the air purification module (1) stops running and goes to step b.

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

[0022] By adding a recording storage module, a random number generation module and a comparison module to the air purification device, the present invention ensures that even if an error occurs in the detection equipment, the air purification module can be controlled to purify the indoor air according to the living habits of indoor occupants, thereby reducing the risk of indoor occupants breathing harmful gases. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of the structure of the indoor air purification device of the present invention

[0024] In the figure: 1. Air purification module; 11. Power supply; 2. Detection module; 3. Control module; 4. Record storage module; 5. Random number generation module; 6. Comparison module. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1The present invention is described with comparative examples and embodiment 1.

[0026] Comparative Example:

[0027] The comparative example uses two currently popular air purification devices containing VOC sensors and particulate matter sensors. The device also includes a control unit and an air purification unit. The above sensors regularly detect pollution sources in the air. When a pollution source is detected, a signal is sent to the control unit, which controls the air purification unit to start; when no pollution source is detected, no signal is sent to the control unit. In this comparative example, the sensor detection interval is set to 2 hours. The two sensors are respectively installed on two opposite walls of the room, numbered 1 and 2. The operation record of the room after detection is shown in Table 1:

[0028] Table 1 Operation records of existing air purification devices after indoor testing

[0029]

[0030] Example 1:

[0031] An indoor air purification device adopted in Example 1 comprises an air purification module (1), a detection module (2), a control module (3), a recording and storage module (4), a random number generation module (5), a comparison module (6), and a power supply (11); the detection module (2) comprises a VOC sensor and a particulate matter sensor; the random number generation module (5) is a Monte Carlo random number generator; the recording and storage module (4) can record 7 days of operating data; the power supply (11) is electrically connected to the air purification module (1), the detection module (2), the control module (3), the recording and storage module (4), the random number generation module (5), and the comparison module (6); the air purification module (1), the control module (3), the recording and storage module (4), the random number generation module (5), and the comparison module (6) are respectively provided with a signal input end and a signal output end, and the detection module (2) is provided with a signal output end; the signal output end of the air purification module (1) is connected to the recording and storage module (6); The signal input end of the storage module (4) is connected, the signal output end of the detection module (2) is respectively connected to the signal input end of the control module (3) and the recording storage module (4), the signal output end of the control module (3) is connected to the signal input end of the air purification module (1), the signal output end of the recording storage module (4) is respectively connected to the signal input end of the random number generation module (5) and the comparison module (6), the signal output end of the random number generation module (5) is connected to the signal input end of the comparison module (6), and the signal output end of the comparison module (6) is connected to the signal input end of the control module (3). In this embodiment 1, the detection time interval of the sensor is set to 2 hours.

[0032] The control method comprises the following steps:

[0033] Step a: Turn on the power and go to step b;

[0034] Step b: When the detection period arrives, the detection module (2) detects the indoor air and then goes to step c;

[0035] Step c: The detection module (2) determines whether the air needs to be purified:

[0036] If the detection module (2) determines that purification is required, the detection module (2) sends a signal to the control module (3), and the process goes to step e; if the detection module (2) determines that purification is not required, in this case, there is a possibility that the detection module (2) has made a mistake, the detection module (2) sends a signal to the recording and storage module (4), and the process goes to step d;

[0037] Step d: The comparison module (6) determines whether air purification is required based on the working records of the air purification module (1) over the previous N days:

[0038] The record storage module (4) sends a signal to the random number generation module (5) and the comparison module (6). The random number generation module (5) generates a number m (0≤m≤1). The comparison module (6) calculates the probability p of the air purification module (1) being in the operating state at that moment in the records of the previous N days. The random number generation module (5) sends a signal to the comparison module (6). The comparison module (6) calculates the size of m and p. If m≤p, the comparison module (6) sends a signal to the control module (3) and goes to step e. If m>p, the comparison module (6) sends a signal to the control module (3) and goes to step f.

[0039] in, n is the number of days in the previous N days during which the air purification module (1) was in operation at that moment;

[0040] Step e: Run the air purification module (1):

[0041] The control module (3) sends an operation signal to the air purification module (1), the air purification module (1) sends a recording signal to the recording storage module (4), the recording storage module (4) records the operation time of the air purification module (1), and then goes to step b;

[0042] Step f: Turn off the air purification module (1):

[0043] The control module (3) sends a shutdown signal to the air purification module (1), and the air purification module (1) stops running and goes to step b.

[0044] The operation record of an indoor air purification device used in Example 1 after indoor detection is shown in Table 2:

[0045] Table 2 Operation record of the indoor air purification device used in Example 1 after indoor testing

[0046] Day 1 the next day Day 3 Day 4 Day 5 Day 6 Day 7 0 o'clock √ √ √ √ √ √ √ 2 o'clock 4 o'clock √ √ √ √ √ √ 6 o'clock √ √ √ √ √ √ √ 8 o'clock √ √ √ √ √ √ √ 10 o'clock √ 12 o'clock √ √ √ √ √ √ √ 2 p.m. √ √ √ √ √ √ √ 4 p.m. √ √ √ √ √ √ √ 6 p.m. √ √ √ √ √ √ √ 8 p.m. √ √ √ √ √ √ √ 10 p.m. √ √ √ √ √ √

[0047] The "√" in Table 1 and Table 2 indicates that the air purification module is working, and the blank indicates that the air purification module is not working. Compared with the comparative example, the technical solution of the present invention, by adding a record storage module, a random number generation module, and a comparison module to the air purification device, is realized. Even if the detection results of the two detection devices are inconsistent (i.e., when the detection devices have errors), the air purification module is controlled to purify the indoor air according to the living habits of the indoor occupants, thereby reducing the risk of indoor occupants breathing harmful gases.

Claims

1. An indoor air purification device, characterized in that: The invention comprises an air purification module (1), a detection module (2), a control module (3), a recording and storage module (4), a random number generation module (5), a comparison module (6), and a power supply (11); the power supply (11) is electrically connected to the air purification module (1), the detection module (2), the control module (3), the recording and storage module (4), the random number generation module (5), and the comparison module (6); the air purification module (1), the control module (3), the recording and storage module (4), the random number generation module (5), and the comparison module (6) are respectively provided with a signal input terminal and a signal output terminal, and the detection module (2) is provided with a signal output terminal; the air purification module (1), the control module (3), the recording and storage module (4), the random number generation module (5), and the comparison module (6) are respectively provided with a signal input terminal and a signal output terminal. The signal output end of the purification module (1) is connected to the signal input end of the recording and storage module (4); the signal output end of the detection module (2) is respectively connected to the signal input end of the control module (3) and the recording and storage module (4); the signal output end of the control module (3) is connected to the signal input end of the air purification module (1); the signal output end of the recording and storage module (4) is respectively connected to the signal input end of the random number generation module (5) and the signal input end of the comparison module (6); the signal output end of the random number generation module (5) is connected to the signal input end of the comparison module (6); and the signal output end of the comparison module (6) is connected to the signal input end of the control module (3); The detection module (2) is also used to determine whether air purification is required. If the detection module (2) determines that purification is required, the detection module (2) sends a signal to the control module (3), and the control module (3) sends an operation signal to the air purification module (1); if the detection module (2) determines that purification is not required, the detection module (2) sends a signal to the record storage module (4), and the comparison module (6) determines whether air purification is required based on the working records of the air purification module (1) in the previous N days; the comparison module is used to calculate the probability that the air purification module is in the operating state at that moment in the records of the previous N days. p , and is also used to compare the random number m generated by the random number generation module with p The size of m and p is then compared, and a signal is sent to the control module (3).

2. An indoor air purification device according to claim 1, characterized in that The detection module (2) contains one or both of a VOC sensor and a particulate matter sensor.

3. An indoor air purification device according to claim 1, characterized in that The random number generating module (5) is a Monte Carlo random number generator.

4. An indoor air purification device according to claim 1, characterized in that The recording storage module (4) is capable of recording 7 days of operating data.

5. A method for controlling an indoor air purification device according to any one of claims 1 to 4, characterized in that the steps include: Step a: Turn on the power and go to step b; Step b, the detection module (2) detects the indoor air, and then goes to step c; Step c: The detection module (2) determines whether the air needs to be purified: If the detection module (2) determines that purification is required, the detection module (2) sends a signal to the control module (3), and the process goes to step e; if the detection module (2) determines that purification is not required, the detection module (2) sends a signal to the recording and storage module (4), and the process goes to step d; Step d: The comparison module (6) determines whether the air needs to be purified: The record storage module (4) sends a signal to the random number generation module (5) and the comparison module (6). The random number generation module (5) generates a number m (0≤m≤1). The comparison module (6) calculates the probability p of the air purification module (1) being in the operating state at that moment in the records of the previous N days. The random number generation module (5) sends a signal to the comparison module (6). The comparison module (6) calculates the size of m and p. If m≤p, the comparison module (6) sends a signal to the control module (3) and goes to step e. If m>p, the comparison module (6) sends a signal to the control module (3) and goes to step f. in, n is the number of days in the previous N days during which the air purification module (1) was in operation at that moment; Step e: Run the air purification module (1): The control module (3) sends an operation signal to the air purification module (1), the air purification module (1) sends a recording signal to the recording storage module (4), the recording storage module (4) records the operation time of the air purification module (1), and then goes to step b; Step f: Turn off the air purification module (1): The control module (3) sends a shutdown signal to the air purification module (1), and the air purification module (1) stops running and goes to step b.

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