Automatic environment purification method, device and system

Abstract

The invention discloses an automatic environment purification method, device and system.The automatic environment purification method comprises the steps that the concentration of dust particles in a target environment is detected multiple times, and the rotating speed of an FFU module is controlled according to the detected concentration of the dust particles after each time of detection; if the concentration of the dust particles in the target environment is detected to be at a first preset gear for continuous preset times, controlling an alarm module to give an alarm prompt; wherein the dust particle concentration corresponding to the first preset gear is larger than the maximum set value of the dust particle concentration of the target environment. According to the technical scheme provided by the embodiment of the invention, the high efficiency and reliability of controlling the concentration of dust particles in the environment are improved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of environmental purification technology, and in particular to an automated environmental purification method, device and system. Background Art

[0002] The fan filter unit (FFU) is a high-efficiency filtering device with its own fan. It uses the internal fan to inhale air. The absorbed air passes through the high-efficiency air filter or ULPA (ultra-high efficiency filter) filter under the FFU to filter out large dust particles in the air. Finally, the new air is evenly delivered to the room. It is widely used in various environments with high requirements for air cleanliness levels, such as internal working environments of equipment, clean rooms, etc.

[0003] At present, various industries have higher and higher requirements for product processes, and the control of dust particle concentration in the environment is becoming more and more stringent, even reaching the dust-free requirements of 10,000, 1,000, and 100 levels. The traditional manual handheld measuring instruments require a lot of time and manpower for fixed-point detection, recording, data collation, and uploading. If the detection value is found to be out of specification, it cannot be cleaned in time, and manual cleaning is labor-intensive and easily causes secondary environmental pollution. Therefore, how to improve the efficiency and reliability of the control of dust particle concentration in the environment has become a technical problem that needs to be solved urgently. Summary of the invention

[0004] The embodiments of the present invention provide an automated environmental purification method, device and system to improve the efficiency and reliability of controlling the concentration of dust particles in the environment.

[0005] According to one aspect of the present invention, there is provided an automated environmental purification method, comprising:

[0006] The concentration of dust particles in the target environment is detected multiple times, and the rotation speed of the FFU module is controlled according to the concentration of the detected dust particles after each detection. If the concentration of dust particles in the target environment is detected to be in a first preset gear for a preset number of consecutive times, the alarm module is controlled to give an alarm prompt; wherein, the dust particle concentration corresponding to the first preset gear is greater than the maximum set value of the dust particle concentration in the target environment.

[0007] Optionally, the concentration of dust particles in the target environment is detected multiple times, and the rotation speed of the FFU module is controlled according to the concentration of the detected dust particles after each detection; if the concentration of dust particles in the target environment is detected to be at a first preset gear for a consecutive preset number of times, the alarm module is controlled to give an alarm prompt, including:

[0008] Control the particle collector to detect the dust particle concentration in the target environment;

[0009] Determining the dust particle concentration gear of the target environment according to the dust particle concentration of the target environment and the dust particle concentration range of each preset gear;

[0010] If the dust particle concentration gear is a first preset gear, determining the cumulative number of times that the dust particle concentration currently continuously detected satisfies the first preset gear;

[0011] Determine whether the accumulated number exceeds the preset number; if exceeded, control the alarm module to issue an alarm prompt; if not exceeded, control the fan in the FFU module to rotate at a speed corresponding to the first preset gear for a first preset time, and then return to execute the control of the particle collector to detect the dust particle concentration of the target environment.

[0012] Optionally, the target environment includes multiple air cleanliness levels; the maximum limit of dust particle concentration corresponding to different air cleanliness levels decreases as the number of the air cleanliness levels decreases; before determining the gear of the dust particle concentration according to the dust particle concentration of the target environment and the dust particle concentration range of each preset gear, it also includes:

[0013] Determining a maximum air cleanliness level for the target environment;

[0014] The dust particle concentration range of each preset gear is determined according to the maximum limit of the dust particle concentration corresponding to the maximum air cleanliness level and the concentration of the preset gear.

[0015] Optionally, the preset gears include the first preset gear, the second preset gear and the third preset gear; wherein the minimum value in the dust particle concentration range corresponding to the first preset gear is greater than the maximum value in the dust particle concentration range of the second preset gear; the minimum value in the dust particle concentration range corresponding to the second preset gear is greater than the maximum value in the dust particle concentration range of the third preset gear;

[0016] When it is determined that the gear position of the dust particle concentration is the second preset gear position, the automatic environment purification method further includes:

[0017] After controlling the fan in the FFU module to rotate at a speed corresponding to the second preset gear for a second preset time, returning to execute controlling the particle collector to detect the dust particle concentration of the target environment;

[0018] When it is determined that the gear of the dust particle concentration is the third preset gear, the automatic environment purification method further includes:

[0019] After controlling the fan in the FFU module to rotate at a speed corresponding to the third preset gear for a third preset time, the control returns to executing the particle collector to detect the dust particle concentration of the target environment.

[0020] Optionally, the dust particle concentration range corresponding to each preset gear position has an overlapping interval with the dust particle concentration range corresponding to at least one air cleanliness level; when the air cleanliness level of the target environment is switched in the same preset gear position or in different preset gear positions, the automatic environment purification method further includes:

[0021] Determine the target air cleanliness level for the next stage under the target environment;

[0022] According to the target air cleanliness level, the speed and / or running time of the fan in the FFU module are adjusted.

[0023] Optionally, the target environment includes dust particles of various diameters; and controlling the particle collector to detect the concentration of dust particles in the target environment includes:

[0024] Controlling the particle collector to detect the concentration of dust particles of various diameters in the target environment;

[0025] The step of determining the dust particle concentration level of the target environment according to the dust particle concentration of the target environment and the dust particle concentration range of each preset level includes:

[0026] Determine the gear of the concentration of dust particles of each diameter in the target environment according to the concentration of dust particles of each diameter in the target environment and the concentration range of dust particles of different diameters at each preset gear;

[0027] The highest gear among the gears of the concentration of dust particles of various diameters in the target environment is determined as the gear of the dust particle concentration of the target environment.

[0028] Optionally, after detecting that the FFU module is disconnected from the communication connection and / or after the control alarm module issues an alarm prompt, the method further includes:

[0029] Controlling the fan in the FFU module to run at a preset maximum speed;

[0030] The automated environmental purification method further comprises:

[0031] The operating status information of the FFU module, the concentration and diameter of the detected dust particles, and the purification result information of the target environment are sent to the display module for display.

[0032] According to another aspect of the present invention, there is provided an environment purification device, comprising:

[0033] An acquisition module is used to acquire the concentration of dust particles in the detected target environment;

[0034] A control module, used for controlling the rotation speed of the FFU module according to the concentration of the detected dust particles in the target environment each time after the concentration of the detected dust particles is obtained;

[0035] A judgment module, used to judge whether the number of times that the concentration of dust particles in the target environment is continuously detected to be at a first preset level reaches a preset number;

[0036] The control module is also used to control the alarm module to issue an alarm prompt after determining that the number of times the concentration of dust particles in the target environment is continuously detected to be at a first preset level reaches a preset number; wherein the dust particle concentration corresponding to the first preset level is greater than the maximum set value of the dust particle concentration in the target environment.

[0037] According to another aspect of the present invention, an environmental purification system is provided, comprising: a particle collector, an FFU module, an alarm module, a host computer and the environmental purification device described in any embodiment of the present invention; wherein the environmental purification device is integrated in the particle collector or the host computer.

[0038] Optionally, the environmental purification system further includes a server and a display module;

[0039] The host computer is used to send the operating status information of the FFU module, the concentration and diameter of the detected dust particles, and the purification result information of the target environment to the database of the server;

[0040] The display module is used to obtain and display the information in the database.

[0041] The technical solution provided by the embodiment of the present invention controls the ion collector to detect the concentration of dust particles in the target environment, and sends the detected concentration of dust particles to the environmental purification device after each detection. The environmental purification device, as a control center, can control the rotation speed of the FFU module according to the detected concentration of dust particles. If it is determined that the detected concentration of dust particles is at the first preset gear, the FFU module is controlled to run at a specified speed. After the FFU module runs stably for a preset time, the ion collector is continued to be controlled to detect the concentration of dust particles in the target environment for judgment and regulation. After several cycles, if the concentration of dust particles in the target environment still exceeds the upper limit, the alarm module is controlled to issue an alarm prompt to notify human processing, instead of manual cleaning and detection, thereby improving the efficiency and reliability of dust particle concentration control in the environment.

[0042] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. 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 creative work.

[0044] Figure 1 is a structural block diagram of an environment purification system provided by an embodiment of the present invention;

[0045] Figure 2 is a structural block diagram of another environmental purification system provided by an embodiment of the present invention;

[0046] Figure 3 is a flow chart of an automated environmental purification method provided by an embodiment of the present invention;

[0047] Figure 4 is a flow chart of another automated environmental purification method provided by an embodiment of the present invention;

[0048] Figure 5 is a schematic diagram of a closed-loop control process provided by an embodiment of the present invention;

[0049] Figure 6 is a flow chart of another automated environmental purification method provided by an embodiment of the present invention;

[0050] Figure 7 is a flow chart of another automated environmental purification method provided by an embodiment of the present invention;

[0051] Figure 8 It is a structural block diagram of an environmental purification device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0052] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0053] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0054] An embodiment of the present invention provides an automated environment purification method, which is performed by an environment purification device. Figure 1 is a structural block diagram of an environmental purification system provided by an embodiment of the present invention, refer to Figure 1 , the environmental purification device 1 can be integrated into the particle collector 200 in the environmental purification system; Figure 2 is a structural block diagram of another environmental purification system provided by an embodiment of the present invention, referring to Figure 2 The environmental purification device 1 can also be integrated into the host computer 300 in the environmental purification system.

[0055] Among them, the environmental purification system includes a particle collector 200, an FFU module 100, a host computer 300 and an environmental purification device 1. The particle collector 200 is used to detect the information of dust particles in the target environment; the information of dust particles includes the diameter of the dust particles and the concentration of dust particles of each diameter (the number of dust particles per unit volume). The FFU module 100 includes a fan and a filter. The fan is used to inhale the air in the target environment from the top of the FFU module 100, and the filter is used to filter out large particles of dust particles in the inhaled air, and finally the new air is evenly delivered to the target environment. The target environment can be understood as an environment that needs to be purified, which can be a dust-free environment inside the equipment, a dust-free room or other environment with high requirements for the air cleanliness level.

[0056] Figure 3 is a flow chart of an automated environmental purification method provided by an embodiment of the present invention, with reference to Figure 3 , automated environmental purification method, including:

[0057] S10. Detect the concentration of dust particles in the target environment multiple times, and control the rotation speed of the FFU module according to the concentration of the detected dust particles after each detection. If the concentration of dust particles in the target environment is detected to be in a first preset gear for a preset number of consecutive times, the alarm module is controlled to issue an alarm prompt; wherein the dust particle concentration corresponding to the first preset gear is greater than the maximum set value of the dust particle concentration in the target environment.

[0058] Specifically, the particle collector 200 is controlled to detect the concentration of dust particles in the target environment for multiple times, and the detected concentration of dust particles is sent to the environmental purification device 1 after each detection; the environmental purification device 1, as a control center, can control the rotation speed of the FFU module 100 according to the detected concentration of dust particles. If the concentration of dust particles is detected to be at the first preset gear, the concentration of dust particles in the target environment exceeds the maximum setting value of the dust particle concentration in the target environment. Among them, the maximum setting value can be set according to actual needs.

[0059] After the environmental purification device 1 determines that the concentration of dust particles in the target environment is at the first preset gear, the control instruction information can be sent to the communication unit in the FFU module 100 via RS485. The communication module in the FFU module 100 compiles and sends the control instruction information to the control unit in the FFU module 100, so that the fan in the FFU module 100 can be controlled by the control unit in the FFU module 100 to run at a specified high speed, thereby increasing the purification speed of the target environment. The purification speed can be understood as the number of dust particles filtered out per unit time. After the FFU module 100 runs for a period of time, the environmental purification device 1 continues to control the particle collector 200 to detect the concentration of dust particles in the target environment, and determines whether the gear position of the current concentration of dust particles in the target environment is lower than the first preset gear position. If it is still in the first preset gear position, the fan in the FFU module 100 is controlled to continue to run at the set high speed, and the above steps are repeated.

[0060] If the concentration of dust particles in the target environment is detected to be at the first preset gear for a preset number of consecutive times, the alarm module is controlled to give an alarm prompt to notify personnel to conduct inspection and processing. Since the purification effect of dust particles in the target environment is related to the rotation speed and running time of the fan in the FFU module 100. Under normal circumstances, the faster the rotation speed of the fan in the FFU module 100, the faster the purification speed, and the more dust particles are filtered out; the longer the running time of the fan in the FFU module 100, the more dust particles are filtered out. The speed corresponding to the first preset gear is set higher. Therefore, after the fan in the FFU module 100 is controlled to run at the speed corresponding to the first preset gear for many times, the concentration of dust particles in the target environment is still at the first preset gear, exceeding the maximum setting value of the dust particle concentration in the target environment. It is necessary to perform manual detection and processing, and check whether the structure in the environmental purification system is faulty or other reasons. Among them, the alarm module can give an alarm prompt in at least one way such as sound, light, and text.

[0061] The automated environmental purification method provided by the embodiment of the present invention controls the ion collector to detect the concentration of dust particles in the target environment, and sends the detected concentration of dust particles to the environmental purification device 1 after each detection. The environmental purification device 1, as a control center, can control the rotation speed of the FFU module 100 according to the detected concentration of dust particles, and combine dust detection and FFU module 100 control into one, so as to realize closed-loop control, replace manual testing, and improve the efficiency of dust particle concentration control in the environment; and after determining that the detected concentration of dust particles is at the first preset gear, the FFU module 100 is controlled to run at a specified speed for a preset time, and the ion collector is continued to be controlled to detect the concentration of dust particles in the target environment for judgment and control. After several cycles, if the concentration of dust particles in the target environment still exceeds the upper limit value, the alarm module is controlled to give an alarm prompt, and manual processing can be notified in time, thereby improving the reliability of dust particle concentration control in the environment.

[0062] On the basis of the above embodiments, optionally, step S10 detects the concentration of dust particles in the target environment multiple times, and controls the rotation speed of the FFU module according to the detected concentration of dust particles after each detection. If the concentration of dust particles in the target environment is detected to be in the first preset gear for a consecutive preset number of times, the alarm module is controlled to issue an alarm prompt, which specifically includes: controlling the particle collector to detect the dust particle concentration in the target environment specifically includes: determining the gear of the dust particle concentration in the target environment according to the dust particle concentration in the target environment and the dust particle concentration range of each preset gear; if the gear of the dust particle concentration is the first preset gear, determining the cumulative number of times the dust particle concentration is continuously detected to meet the first preset gear; judging whether the cumulative number exceeds the preset number; if it exceeds, controlling the alarm module to issue an alarm prompt; if it does not exceed, controlling the fan in the FFU module to rotate at a speed corresponding to the first preset gear for a first preset time, and then returning to execute controlling the particle collector to detect the dust particle concentration in the target environment.

[0063] Figure 4 is a flowchart of another automated environmental purification method provided by an embodiment of the present invention, referring to Figure 4 , automated environmental purification method, including:

[0064] S110, controlling the particle collector to detect the dust particle concentration in the target environment.

[0065] S120: Determine a gear of the dust particle concentration in the target environment according to the dust particle concentration in the target environment and the dust particle concentration ranges of each preset gear.

[0066] S130, determining whether the gear of the dust particle concentration is the first preset gear; if not, executing step S140; if so, executing step S150.

[0067] S140, controlling the fan in the FFU module to operate normally according to the speed of the determined gear, and returning to step S110.

[0068] S150, determining the cumulative number of times that the dust particle concentration currently detected continuously meets the first preset level.

[0069] S160, determine whether the accumulated number exceeds the preset number; if not, execute step S170; if yes, execute step S180.

[0070] S170, controlling the fan in the FFU module to rotate at a speed corresponding to the first preset gear for a first preset time, and returning to step S110.

[0071] S180 controls the alarm module to issue an alarm prompt.

[0072] Specifically, there are multiple preset gears for dust particle concentration, and different preset gears correspond to different dust particle concentration ranges, and different preset gears correspond to different rotation speeds of the fan in the FFU module 100. Among them, the first preset gear is the highest gear, and the first preset gear corresponds to the highest rotation speed of the fan in the FFU module 100. In other embodiments of the present invention, different preset gears can also correspond to different rotation speed ranges of the fan in the FFU module 100.

[0073] Exemplarily, there are three preset gears, namely, the first preset gear, the second preset gear and the third preset gear. The minimum value in the dust particle concentration range corresponding to the first preset gear is greater than the maximum value in the dust particle concentration range of the second preset gear; the minimum value in the dust particle concentration range corresponding to the second preset gear is greater than the maximum value in the dust particle concentration range of the third preset gear. The first preset gear, the second preset gear and the third preset gear can be understood as high gear, medium gear and low gear respectively.

[0074] When it is determined that the gear position of the dust particle concentration is the second preset gear position, the automated environmental purification method also includes: controlling the fan in the FFU module 100 to rotate at a speed corresponding to the second preset gear position for a second preset time, and then returning to execute the control particle collector 200 to detect the dust particle concentration of the target environment. When it is determined that the gear position of the dust particle concentration is the third preset gear position, the automated environmental purification method also includes: controlling the fan in the FFU module 100 to rotate at a speed corresponding to the third preset gear position for a third preset time, and then returning to execute the control particle collector 200 to detect the dust particle concentration of the target environment. Among them, the first preset time, the second preset time, and the third preset time can be the same, partially the same, or completely different. The above-mentioned first preset time, second preset time, and third preset time can be obtained by verification based on actual test data. The first preset time can be 0.5 hours, 1 hour, 1.5 hours, 2 hours, etc.; the second preset time can be 0.1 hour, 0.5 hours, 0.7 hours, 1 hour, 1.5 hours, 2 hours, etc.; the third preset time can be 0.1 hour, 0.5 hours, 0.7 hours, 1 hour, 1.5 hours, 2 hours, etc., and the preset time can be 3 times, 4 times, 5 times, etc., which are all set according to actual needs.

[0075] That is to say, the FFU module 100 can have various forms of speed adjustment, which can be adjusted from high speed to medium speed, from high speed to low speed, from high speed to medium speed and then to low speed, from low speed to high speed, from low speed to medium speed, from low speed to medium speed and then to high speed, from medium speed to low speed and from medium speed to high speed. High speed, medium speed and low speed can be specific speed values ​​or speed ranges.

[0076] The cleaning process of the target environment can be formed by a combination of FFU module 100 high-speed purification and cleaning, FFU module 100 medium-speed purification and cleaning, FFU low-speed purification and cleaning, and particle collection and detection. For example, FFU module 100 high-speed purification and cleaning-particle collection and detection-FFU module 100 medium-speed purification and cleaning-particle collection and detection; or, FFU module 100 high-speed purification and cleaning-particle collection and detection-FFU module 100 low-speed purification and cleaning-particle collection and detection; or, FFU module 100 low-speed purification and cleaning-particle collection and detection-FFU module 100 medium-speed purification and cleaning-particle collection and detection, etc.

[0077] For example, Figure 5 is a test data coordinate diagram of a closed-loop control process provided by an embodiment of the present invention, taking the control process of the concentration of dust particles with a diameter of 0.5 μm as an example, referring to Figure 5 , line segment AB indicates that an increase in dust particle concentration is detected, line segment BC indicates that the fan in the FFU module is controlled to increase its speed to a high-end speed of around 3000 rpm, line segments CD, DE, and EF indicate that a decrease in dust particle concentration is detected; line segment FG indicates that the fan speed in the FFU module is controlled to return to a mid-range speed of around 3000 rpm.

[0078] The automated environmental purification method provided by the embodiment of the present invention determines the gear position of the dust particle concentration of the target environment. If the dust particle concentration of the target environment is in the middle or low gear, the fan in the FFU module 100 is controlled to operate normally according to the speed and operation time of the middle or low gear, and the particle collector 200 is controlled to detect the dust particle concentration of the target environment at regular intervals; if the dust particle concentration of the target environment is in the high gear, a high-grade record is added, and it is determined whether the number of consecutive high-grade times exceeds the preset number. If not, the fan in the FFU module 100 is controlled to rotate at a speed corresponding to the first preset gear position for the first preset time, and then returns to execute the control of the particle collector 200 to detect the dust particle concentration of the target environment. If it exceeds, the alarm module is controlled to alarm. The technical solution provided by the embodiment of the present invention can ensure that the dust-free environment can meet the requirements of industrial production, and can also adjust the speed of the fan in the FFU module 100 according to the dust particle concentration range to meet the requirements of energy saving and environmental protection.

[0079] On the basis of the above embodiments, the target environment may optionally include multiple air cleanliness levels; the maximum limit of dust particle concentration corresponding to different air cleanliness levels decreases as the number of air cleanliness levels decreases. Before determining the gear of dust particle concentration according to the dust particle concentration of the target environment and the dust particle concentration range of each preset gear, it also includes: determining the maximum air cleanliness level of the target environment; determining the dust particle concentration range of each preset gear according to the maximum limit of dust particle concentration corresponding to the maximum air cleanliness level and the concentration of the preset gear.

[0080] Figure 6 is a flowchart of another automated environmental purification method provided by an embodiment of the present invention, referring to Figure 6 , automated environmental purification method, including:

[0081] S210: Determine the maximum air cleanliness level of the target environment, and determine the dust particle concentration range of each preset gear according to the maximum limit of the dust particle concentration corresponding to the maximum air cleanliness level and the concentration of the preset gear.

[0082] S220, controlling the particle collector to detect the dust particle concentration in the target environment.

[0083] S230: Determine a gear of the dust particle concentration in the target environment according to the dust particle concentration in the target environment and the dust particle concentration ranges of each preset gear.

[0084] S240, determining whether the gear of the dust particle concentration is the first preset gear; if not, executing step S250; if so, executing step S260.

[0085] S250, controlling the fan in the FFU module to operate normally according to the speed of the determined gear, and returning to step S220.

[0086] S260: Determine the cumulative number of times that the dust particle concentration currently detected continuously meets the first preset level.

[0087] S270, determine whether the accumulated number of times exceeds the preset number of times; if not, execute step S280; if so, execute step S290.

[0088] S280, controlling the fan in the FFU module to rotate at a speed corresponding to the first preset gear for a first preset time, and returning to execute step S220.

[0089] S290, controlling the alarm module to give an alarm prompt.

[0090] Specifically, the air cleanliness level is usually divided according to the ISO14644-1 standard, which specifies the number of dust particles and microorganisms allowed per cubic meter of air in clean rooms of different levels. For example, Table 1 is an air cleanliness level classification table provided in an embodiment of the present invention. Referring to Table 1, the air cleanliness levels include level 10, white level, thousand level, ten thousand level, hundred thousand level, million level, etc.

[0091] Table 1 Classification of air cleanliness levels

[0092]

[0093] Among them, the air cleanliness level of the target environment includes multiple levels, which may include all levels in Table 1, or may include some levels in Table 1. For example, the air cleanliness level allowed by the target environment includes Class 10,000 and Class 1,000, Class 10, and Class 10 below Class 10, then the maximum air cleanliness level allowed by the target environment is Class 10,000. After determining that the maximum air cleanliness level of the target environment is Class 10,000, the dust particle concentration range of each preset gear is determined according to the maximum limit of the dust particle concentration corresponding to Class 10,000 and the concentration of the preset gear. The dust particle concentration range of each preset gear can be determined according to a preset proportional relationship. For example, the number of preset gears is three, including a first preset gear, a second preset gear, and a third preset gear, corresponding to high, medium, and low gears, respectively. The dust particle concentration range corresponding to the first preset gear is 1 / 2 to 1 of the maximum limit of the dust particle concentration corresponding to the ten thousand level; the dust particle concentration range corresponding to the second preset gear is 1 / 4 to 1 / 2 of the maximum limit of the dust particle concentration corresponding to the ten thousand level; the dust particle concentration range corresponding to the third preset gear is 0 to 1 / 4 of the maximum limit of the dust particle concentration corresponding to the ten thousand level.

[0094] The diameter of the dust particles in the target environment may include one or more types. The diameter types of dust particles that the FFU module 100 can filter can be determined according to the aperture parameters of the filter mesh in the filter. Therefore, the FFU module 100 can filter dust particles of all diameters in the target environment, and can also filter some dust particles with larger diameters.

[0095] For example, Table 2 is a table showing the relationship between the dust particle concentration and the fan speed at each gear when the maximum air cleanliness level of the target environment is 10,000, provided in an embodiment of the present invention. Figure 2 The concentration ranges of dust particles with a diameter of 0.5μm and dust particles with a diameter of 5μm at high, medium and low gears were calibrated respectively, and the fan speeds corresponding to high, medium and low gears were calibrated respectively.

[0096] Table 2 Dust particle concentration and fan speed at each gear when the maximum air cleanliness level is 10,000

[0097]

[0098] The automated environmental purification method provided by the embodiment of the present invention determines the dust particle concentration range of each preset gear according to the maximum limit of the dust particle concentration corresponding to the maximum air cleanliness level and the concentration of the preset gear. The dust particle concentration level in the target environment can be determined by comparing the monitoring feedback data with the dust particle concentration range of each preset gear, and then active adjustments are made according to the level, thereby achieving precise control based on the actual situation of the cleanliness level of the target environment.

[0099] Based on the above embodiments, optionally, the dust particle concentration range corresponding to each preset gear position has an overlapping interval with the dust particle concentration range corresponding to at least one air cleanliness level; when the air cleanliness level of the target environment is switched in the same preset gear position or in different preset gear positions, the automatic environment purification method further includes:

[0100] Determine the target air cleanliness level for the next stage under the target environment;

[0101] According to the target air cleanliness level, the speed and / or running time of the fan in the FFU module 100 is adjusted.

[0102] Specifically, the faster the speed of the fan in the FFU module 100, the faster the purification speed; the longer the running time of the fan in the FFU module 100, the greater the concentration of dust particles filtered out. Therefore, by adjusting at least one of the speed and running time of the fan in the FFU module 100, the air cleanliness level of the target environment can be changed.

[0103] Exemplarily, Table 3 is a rotation speed and / or operating time required for switching the air cleanliness from Class 100,000 to Class 10,000 or to Class 1,000 provided in an embodiment of the present invention. Referring to Table 3, when the air cleanliness is switched from Class 100,000 to Class 10,000, if the operating time (stationary time) of the fan in the FFU module 100 is kept unchanged each time, the rotation speed of the fan in the FFU module 100 needs to be adjusted to 2500 rpm, or even higher. When the air cleanliness is switched from Class 100,000 to Class 1,000, the rotation speed of the fan in the FFU module 100 needs to be adjusted to 3500 rpm, and the operating time needs to meet 1.5 hours, or even higher.

[0104] Table 3 Relationship between FFU speed, standing time and cleanliness level when air cleanliness is 100,000 level

[0105]

[0106] Optionally, in the case where the diameters of the dust particles in the target environment include a plurality of Figure 7 is a flowchart of another automated environmental purification method provided by an embodiment of the present invention, referring to Figure 7 , automated environmental purification method, including:

[0107] S310, determining the maximum air cleanliness level of the target environment, and determining the dust particle concentration range of the dust particles of each diameter at each preset level according to the maximum limit of the dust particle concentration of each diameter corresponding to the maximum air cleanliness level and the concentration of the preset level.

[0108] S320, control particle collection and detect the concentration of dust particles of various diameters in the target environment.

[0109] S330: Determine the concentration level of dust particles of different diameters in the target environment according to the concentration of dust particles of different diameters in the target environment and the concentration range of dust particles of different diameters at each preset level.

[0110] S340: Determine the highest gear among the gears of dust particle concentration of each diameter in the target environment as the gear of dust particle concentration in the target environment.

[0111] S350, determining whether the gear of the dust particle concentration is the first preset gear; if not, executing step S360; if yes, executing step S370.

[0112] S360, controlling the fan in the FFU module to rotate at a speed corresponding to the first preset gear for a first preset time, and returning to execute step S320.

[0113] S370: Determine the cumulative number of times that the dust particle concentration currently detected continuously meets the first preset level.

[0114] S380, determine whether the cumulative number exceeds the preset number; if not, execute step S390; if so, execute step S3100.

[0115] S390, controlling the fan in the FFU module to rotate at a speed corresponding to the first preset gear for a first preset time, and returning to step S110.

[0116] S3100, control the alarm module to issue an alarm prompt.

[0117] Specifically, in the case where the diameters of the dust particles in the target environment include multiple types, controlling the particle collector 200 to detect the concentration of the dust particles in the target environment includes: controlling the particle collector 200 to detect the concentrations of the dust particles of multiple diameters in the target environment. Determining the gear of the dust particle concentration in the target environment according to the dust particle concentration in the target environment and the dust particle concentration range of each preset gear, including: determining the gear of the concentration of dust particles of each diameter in the target environment according to the concentration of dust particles of each diameter in the target environment and the concentration range of dust particles of different diameters at each preset gear; determining the highest gear among the gears of the concentration of dust particles of each diameter in the target environment as the gear of the dust particle concentration in the target environment.

[0118] The automated environmental purification method provided by the embodiment of the present invention, by determining the highest gear among the gears of dust particle concentration of each diameter in the target environment as the gear of dust particle concentration in the target environment, can control the fan in the FFU module 100 according to the speed corresponding to the determined highest gear when the concentrations of dust particles of different diameters appear in different gears, thereby ensuring the filtering effect of the FFU module 100 on dust particles of each diameter in the target environment.

[0119] On the basis of the above embodiments, optionally, after detecting that the FFU module 100 is disconnected from the communication connection and / or after the control alarm module issues an alarm prompt, it also includes: controlling the fan in the FFU module 100 to run at a preset maximum speed. This further ensures the filtering effect of the FFU module 100 on dust particles of each diameter in the target environment, and ensures the stability of the cleanliness level of the internal environment of the equipment.

[0120] Based on the above embodiments, the automated environmental purification method may also include: sending the operating status information of the FFU module 100, the concentration and diameter of the detected dust particles, and the purification result information of the target environment to the display module for display. Specifically, the collected data information may be sent to the host computer 300, which then transmits the information to the database of the server 400 through the network, and the user may retrieve the database information through the terminal for visual display. The terminal may be an electronic device such as a computer, a mobile phone, or a tablet.

[0121] An embodiment of the present invention further provides an environment purification device for executing the automated environment purification method described in any of the above embodiments. Figure 8 is a structural block diagram of an environmental purification device provided by an embodiment of the present invention, refer to Figure 8 , the environmental purification device includes:

[0122] An acquisition module 10 is used to acquire the concentration of dust particles in the detected target environment;

[0123] The control module 30 is used to control the rotation speed of the FFU module 100 according to the detected concentration of dust particles in the target environment each time after the concentration of dust particles detected is obtained;

[0124] The judging module 20 is used to judge whether the number of times that the concentration of dust particles in the target environment is continuously detected to be at the first preset level reaches a preset number;

[0125] The control module 30 is also used to control the alarm module to issue an alarm prompt after determining that the concentration of dust particles in the target environment is continuously detected to be at a first preset level for a preset number of times, wherein the dust particle concentration corresponding to the first preset level is greater than the maximum set value of the dust particle concentration in the target environment.

[0126] The environmental purification device provided by the embodiment of the present invention controls the particle collector 200 to detect the concentration of dust particles in the target environment, and then obtains the detected concentration of dust particles in the target environment through the acquisition module 10. The control module 30 is used to control the rotation speed of the FFU module 100 according to the detected concentration of dust particles in the target environment each time the detected concentration of dust particles in the target environment is obtained; the dust particle detection and the FFU module 100 regulation are combined into one to realize closed-loop control, replace manual testing, and improve the efficiency of dust particle concentration control in the environment; and when it is determined that the detected dust particle concentration is at the first preset gear, the control module 30 is also used to control the FFU module 100 to run at a high speed for a preset time at a specified speed, and continue to control the particle collector 200 to detect the concentration of dust particles in the target environment for judgment and regulation. After several cycles, if the concentration of dust particles in the target environment still exceeds the upper limit value, the alarm module is controlled to issue an alarm prompt, and manual processing can be notified in time, thereby improving the reliability of dust particle concentration control in the environment.

[0127] refer to Figure 1 and Figure 2 An embodiment of the present invention further provides an environmental purification system, comprising: a particle collector 200, an FFU module 100, an alarm module, a host computer 300 and the environmental purification device 1 described in any embodiment of the present invention; wherein the environmental purification device 1 is integrated in the particle collector 200 or the host computer 300.

[0128] Furthermore, the environmental purification system also includes a server 400 and a terminal 500, and the terminal 500 includes a display module. The host computer 300 is used to send the operating status information of the FFU module 100, the concentration and diameter of the detected dust particles, and the purification result information of the target environment to the database of the server 400; the display module is used to obtain the information in the database and display it. The terminal 500 can be an electronic device such as a computer, a mobile phone or a tablet.

[0129] Specifically, the particle collector 200 detects the internal environment of the device and sends the concentration information of each particle diameter to the environmental purification device 1. The environmental purification device 1 serves as a control center to analyze and determine the range and gear position of these particles. If the gear position is high, the control instruction information will be sent to the communication unit of the FFU module 100 through RS485. The communication unit of the FFU module 100 will compile and transmit the control instruction information to the control unit of the FFU module 100. The control unit of the FFU module 100 will adjust the speed of the fan in the FFU module 100 according to the speed in the control instruction information. After the FFU module 100 runs smoothly for a period of time, the FFU module 100 will feed back the speed to the environmental purification device 1. The environmental purification device After receiving the feedback information, the particle collector 200 will be triggered to collect the particles. The process will repeat over and over again. The particle collector 200 will feed back the collected particle information to the environmental purification device 1. The environmental purification device 1 will analyze and determine the particle range and gear to which the particles belong again, whether it is low or medium. If it has been adjusted to low or medium, the FFU will run at a low or medium speed and regularly trigger the particle collector 200 to collect the concentration of particles of each diameter. If it is still in the high-speed range, the FFU module 100 will continue to run at the set high speed until the alarm module is triggered to alarm after the preset high-speed purification and control process, and notify people to check and handle it.

[0130] The environmental purification system provided by the embodiment of the present invention has good stability, high reliability, high working efficiency, is more energy-saving and environmentally friendly, can replace manual testing and achieve the internal environment cleaning effect of the equipment by increasing the ventilation flow and frequency. Among them, the motor in the FFU module 100 can be a DC motor, which has the characteristics of low power, high speed, large air volume and long life; after the particle collector 200 finds that the collected data is abnormal, the control alarm module will alarm, and the on-site personnel can find the problem in time and deal with it in time. Clean closed-loop control can be achieved to prevent the dust particles in the environment from exceeding the standard and causing harm to the production products in the target environment; the monitoring data information and FFU speed information can be displayed in the central control background and can be viewed and downloaded in real time.

[0131] In addition, the environmental purification system also has the function of preventing network disconnection. In order to prevent the fan speed in the FFU module 100 from being too low and the air flow after purification from being too small after the network disconnection, resulting in abnormal cleanliness level of the internal environment of the equipment, even if the network is disconnected, the fan speed in the FFU module 100 will be adjusted to the set maximum speed to ensure the stability of the cleanliness level of the internal environment of the equipment; if repeated test data appears for a preset number of consecutive times, the personnel will be reminded of data duplication. At this time, in order to prevent the particle collector 200 from being abnormal, the fan speed in the FFU module 100 will also be adjusted to the set maximum speed to ensure the stability of the cleanliness level of the internal environment of the equipment.

[0132] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. An automated environmental purification method, characterized in that: include: The concentration of dust particles in the target environment is detected multiple times, and the rotation speed of the FFU module is controlled according to the concentration of the detected dust particles after each detection. If the concentration of dust particles in the target environment is detected to be in a first preset gear for a preset number of consecutive times, the alarm module is controlled to give an alarm prompt; wherein, the dust particle concentration corresponding to the first preset gear is greater than the maximum set value of the dust particle concentration in the target environment.

2. The automated environmental purification method according to claim 1, characterized in that: The concentration of dust particles in the target environment is detected multiple times, and the rotation speed of the FFU module is controlled according to the concentration of the detected dust particles after each detection; If the concentration of dust particles in the target environment is detected to be at a first preset level for a preset number of consecutive times, the alarm module is controlled to issue an alarm prompt, including: Control the particle collector to detect the dust particle concentration in the target environment; Determining the dust particle concentration gear of the target environment according to the dust particle concentration of the target environment and the dust particle concentration range of each preset gear; If the dust particle concentration gear is a first preset gear, determining the cumulative number of times that the dust particle concentration currently continuously detected satisfies the first preset gear; Determine whether the accumulated number exceeds the preset number; if exceeded, control the alarm module to issue an alarm prompt; if not exceeded, control the fan in the FFU module to rotate at a speed corresponding to the first preset gear for a first preset time, and then return to execute the control of the particle collector to detect the dust particle concentration of the target environment.

3. The automated environmental purification method according to claim 2, characterized in that: The target environment includes multiple air cleanliness levels; the maximum limit of dust particle concentration corresponding to different air cleanliness levels decreases as the number of the air cleanliness levels decreases; Before determining the gear of the dust particle concentration according to the dust particle concentration of the target environment and the dust particle concentration range of each preset gear, the method further includes: Determining a maximum air cleanliness level for the target environment; The dust particle concentration range of each preset gear is determined according to the maximum limit of the dust particle concentration corresponding to the maximum air cleanliness level and the concentration of the preset gear.

4. The automated environmental purification method according to claim 2 or 3, characterized in that: The preset gears include the first preset gear, the second preset gear and the third preset gear; wherein the minimum value in the dust particle concentration range corresponding to the first preset gear is greater than the maximum value in the dust particle concentration range of the second preset gear; the minimum value in the dust particle concentration range corresponding to the second preset gear is greater than the maximum value in the dust particle concentration range of the third preset gear; When it is determined that the gear position of the dust particle concentration is the second preset gear position, the automatic environment purification method further includes: After controlling the fan in the FFU module to rotate at a speed corresponding to the second preset gear for a second preset time, returning to execute controlling the particle collector to detect the dust particle concentration of the target environment; When it is determined that the gear of the dust particle concentration is the third preset gear, the automatic environment purification method further includes: After controlling the fan in the FFU module to rotate at a speed corresponding to the third preset gear for a third preset time, the fan returns to execute the control of the particle collector to detect the dust particle concentration of the target environment.

5. The automated environmental purification method according to claim 4, characterized in that: The dust particle concentration range corresponding to each preset gear position has an overlapping interval with the dust particle concentration range corresponding to at least one air cleanliness level; when the air cleanliness level of the target environment is switched in the same preset gear position or in different preset gear positions, the automatic environment purification method further includes: Determine the target air cleanliness level for the next stage under the target environment; According to the target air cleanliness level, the speed and / or running time of the fan in the FFU module are adjusted.

6. The automated environmental purification method according to claim 2, characterized in that: The target environment includes dust particles of various diameters; the control particle collector detects the dust particle concentration of the target environment, including: Controlling the particle collector to detect the concentration of dust particles of various diameters in the target environment; The step of determining the dust particle concentration level of the target environment according to the dust particle concentration of the target environment and the dust particle concentration range of each preset level includes: Determine the gear of the concentration of dust particles of each diameter in the target environment according to the concentration of dust particles of each diameter in the target environment and the concentration range of dust particles of different diameters at each preset gear; The highest gear among the gears of the concentration of dust particles of various diameters in the target environment is determined as the gear of the dust particle concentration of the target environment.

7. The automated environmental purification method according to claim 1, characterized in that: After detecting that the FFU module is disconnected from the communication connection and / or after the control alarm module issues an alarm prompt, it also includes: Controlling the fan in the FFU module to run at a preset maximum speed; The automated environmental purification method further comprises: The operating status information of the FFU module, the concentration and diameter of the detected dust particles, and the purification result information of the target environment are sent to the display module for display.

8. An environmental purification device, characterized in that: include: An acquisition module is used to acquire the concentration of dust particles in the detected target environment; A control module, used for controlling the rotation speed of the FFU module according to the concentration of the detected dust particles in the target environment each time after the concentration of the detected dust particles is obtained; A judgment module, used to judge whether the number of times that the concentration of dust particles in the target environment is continuously detected to be at a first preset level reaches a preset number; The control module is also used to control the alarm module to issue an alarm prompt after determining that the number of times the concentration of dust particles in the target environment is continuously detected to be at a first preset level reaches a preset number; wherein the dust particle concentration corresponding to the first preset level is greater than the maximum set value of the dust particle concentration in the target environment.

9. An environmental purification system, characterized in that: include: A particle collector, an FFU module, an alarm module, a host computer and the environmental purification device according to claim 8; wherein the environmental purification device is integrated in the particle collector or the host computer.

10. The environmental purification system according to claim 9, characterized in that: Also includes a server and a display module; The host computer is used to send the operating status information of the FFU module, the concentration and diameter of the detected dust particles, and the purification result information of the target environment to the database of the server; The display module is used to obtain and display the information in the database.

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