Control method applied to air disinfection device, medium and air disinfection device

Abstract

The application discloses a control method capable of being applied to an air sterilization device. The method comprises the following steps: acquiring a first signal, wherein the first signal is a signal of a first channel collected by a first sampling circuit, and the first channel is a channel formed by electrically connecting a metal strip, a large resistor and a ground terminal of the air sterilization device; and outputting a first control signal according to the first signal to control a visual component of the air sterilization device to display a case that the carbon brush releases electrons in a directional manner in a case that a user contacts the metal strip. By adopting the implementation manner, the user can visually and intuitively understand the case that the air sterilization device releases negative ions in a directional manner.

Description

Technical Field

[0001] This application relates to the field of air disinfection technology, specifically to a control method, a medium, and an air disinfection device. Background Technology

[0002] People have recognized the seriousness of airborne viral infections, especially respiratory infections. To address this need, air purifiers and air disinfection equipment have become widely used.

[0003] Negative ion disinfection devices are a type of air disinfection equipment. Currently, most negative ion disinfection devices are large and typically placed indoors (homes, offices, etc.), making them unsuitable for personal use and failing to meet people's needs for purification, disinfection, and virus blocking anytime, anywhere. Therefore, the applicant has developed a portable negative ion disinfection device and continues research and development to iterate on the product and improve its product portfolio. Summary of the Invention

[0004] The applicant previously developed an air disinfection device capable of both open and closed operation. In closed operation, the device generates a directional cold spray ion wind directed directly at the user, increasing the local concentration of negative oxygen ions and improving the local disinfection effect and the user's ability to inhale negative oxygen ions. This air disinfection device does not include fans or similar components; the directional cold spray ion wind is primarily generated by the electric field between the human body and the carbon brushes during closed operation. Therefore, it is weaker than wind generated by fans and requires careful observation from the user. Building upon this, the applicant has introduced a visualization component into the air disinfection device. The purpose of this application is to provide a control method for an air disinfection device and an air disinfection device employing this control method, allowing users to visually and intuitively understand the device's directional release of negative ions.

[0005] A first aspect of this application provides a control method for an air disinfection device, the method comprising:

[0006] Acquire a first signal, which is a signal from a first path collected by a first sampling circuit. The first path is a path formed by the metal strip, large resistor and ground terminal of the air disinfection device being electrically connected.

[0007] When a user touches the metal strip, a first control signal is output based on the first signal to control the visualization component of the air sterilization device to display the directional release of electrons by the carbon brush.

[0008] In one possible implementation of the first aspect, the method further includes:

[0009] A second signal is acquired, which is a signal collected by the touch sensing circuit, and the second signal is used to characterize whether the metal strip has been touched by a biological entity;

[0010] Based on the second signal, determine whether the user has touched the metal strip; or, based on the first signal and the second signal, determine whether the user has touched the metal strip.

[0011] In one possible implementation of the first aspect, the first signal is used to characterize the current magnitude of the first pathway; the step of determining whether a user has touched the metal strip based on the first signal and the second signal includes: determining that the user has touched the metal strip if the current magnitude characterized by the first signal is within a preset threshold range and the second signal indicates that the metal strip has been biologically touched.

[0012] In one possible implementation of the first aspect, the visualization component includes a light source, and the first control signal is capable of controlling one or more parameters of the light source, including brightness, color, color temperature, and flicker frequency.

[0013] A second aspect of this application provides an air disinfection device, including a housing, a main control unit, an ion generating component, a visualization component, and a first sampling circuit, wherein...

[0014] The housing is used to form a receiving space. A metal strip is provided on the outer surface of the housing. At least a portion of the metal strip is exposed to the environment and can be touched by the user. A large resistor is provided in the receiving space. One end of the large resistor is electrically connected to the metal strip, and the other end of the large resistor is grounded to form a first circuit.

[0015] The ion generating component is disposed in the containment space and is electrically connected to the main control unit, and is used to generate and release electrons into the environment;

[0016] The first sampling circuit is used to acquire the first signal on the first path;

[0017] The main control unit is disposed in the accommodating space and is used to output a first control signal according to the first signal when the user touches the metal strip;

[0018] The visualization component is electrically connected to the main control unit and is used to display the directional release of electrons by the carbon brush according to the first control signal.

[0019] In one possible implementation of the second aspect, the first sampling circuit includes a sampling resistor, a signal amplification unit, and a filtering unit; wherein one end of the sampling resistor is electrically connected to a metal strip, and the other end is grounded; the signal amplification unit is connected to one end of the sampling resistor; and the filtering unit is electrically connected to both the signal amplification unit and the main control unit.

[0020] In one possible implementation of the second aspect, the device further includes: a touch sensing circuit for acquiring a second signal, the second signal being used to characterize whether the metal strip has been contacted by a biological entity; the main control unit is further configured to determine whether a user has contacted the metal strip based on the second signal; or, to determine whether a user has contacted the metal strip based on the first signal and the second signal.

[0021] In one possible implementation of the second aspect, the touch sensing circuit includes: a second copper-clad layer and a second sampling circuit located in the accommodating space, the second copper-clad layer being disposed corresponding to the metal strip and electrically connected to the second sampling circuit, the second sampling circuit being electrically connected to the main control unit; a second partition is provided between the correspondingly disposed metal strip and the second copper-clad layer, such that the electrical gap formed between the metal strip and the second copper-clad layer exceeds a preset safety value.

[0022] In one possible implementation of the second aspect, the device further includes a first partition, the first partition and the second partition causing the electrical clearance between the first segment formed by the metal strip to the large resistor in the first passage and other electronic components in the accommodating space to exceed a preset safety value.

[0023] In one possible implementation of the second aspect, the device further includes a button assembly disposed on the housing, the button assembly including a button and a waterproof plug; one end of the button passes through a third mounting groove on the housing, extends into the receiving space, and abuts against a mechanical control switch on the main control board, and at least a portion of the other end of the button can be contacted by the user; the waterproof plug is disposed on the outer periphery of the button and is tightly fitted with the button and the third mounting groove respectively.

[0024] In one possible implementation of the second aspect, the key includes a keycap and a keypost, a portion of the keycap being accessible to a user, the keypost passing through the third mounting groove and abutting against the mechanical control switch; the waterproof plug has a first tight-fitting portion and a second tight-fitting portion, the first tight-fitting portion being disposed around the outer periphery of the keypost and being tight-fitting at least with the keypost, and the second tight-fitting portion being tight-fitting at least with the third mounting groove.

[0025] In one possible implementation of the second aspect, the first tight-fitting portion and the second tight-fitting portion further abut against the keycap, and a first cavity is formed between the first tight-fitting portion, the second tight-fitting portion and the keycap.

[0026] A third aspect of this application provides a computer-readable storage medium storing a computer program that, when executed by a processor, causes the processor to perform all or part of the steps of any possible method of the first aspect. Attached Figure Description

[0027] Figure 1 This is an exemplary flowchart of a control method for air disinfection equipment provided in this application.

[0028] Figure 2 This is a schematic diagram of the external structure of an exemplary air disinfection device provided in this application.

[0029] Figure 3 This is an exploded view of an exemplary air disinfection device provided in this application.

[0030] Figure 4 This is a partial structural diagram of an exemplary air disinfection device provided in this application.

[0031] Figure 5 This is a side cross-sectional view of an exemplary air disinfection device provided in this application.

[0032] Figure 6 This is a schematic diagram of the internal partial structure of an exemplary air disinfection device provided in this application.

[0033] Figure 7 This is a schematic diagram of the main control board and some related components in the exemplary air disinfection device provided in this application.

[0034] Figure 8 This is another schematic diagram of the internal partial structure of the exemplary air disinfection device provided in this application.

[0035] Figure 9 This is a schematic diagram of the upper shell of an exemplary air disinfection device provided in this application.

[0036] Figure 10 This is another exemplary flowchart of the control method for air disinfection equipment provided in this application.

[0037] Figure 11 This is a schematic diagram of the main control unit and related components in the exemplary air disinfection device provided in this application.

[0038] Figure 12This is an exemplary circuit diagram of the first sampling circuit provided in this application.

[0039] Explanation of reference numerals in the attached figures:

[0040] Housing 100; Receiving space 101; Upper shell 110; First surface 111; Lower shell 120; Decorative panel 130; First mounting groove 104; Second mounting groove 105; Third mounting groove 106; Step 1061; First opening 107; Bend 141; First partition 142; Second partition 143;

[0041] Main control board 200; First area 210; Through hole 211; Second area 220; Second copper cladding layer 221; Separator groove 230; Bending groove 240; Other electronic components 250; Mechanical control switch 260;

[0042] Ion generating component 300; carbon brush 301; carbon brush plate 302; first protective cover 303;

[0043] Metal strip 401; Ear part 4011; High resistance 402;

[0044] Visualization component 500; light guide strip 501; light source inlet 5011; light source 502;

[0045] Key assembly 600; key 610; keycap 611; keypost 612; waterproof plug 620; first tight-fitting part 621; second tight-fitting part 622; first cavity 623;

[0046] Battery 701; Second protective cover 702;

[0047] Conductive fastener 801. Detailed Implementation

[0048] To clearly and completely describe the technical solution of this application, further explanation will be provided below in conjunction with embodiments and accompanying drawings.

[0049] For ease of understanding, the main structure of an exemplary air disinfection device capable of applying the control method proposed in this application will be described first, followed by a description of the control method.

[0050] See Figures 2 to 9 as well as Figure 11 This application provides an air disinfection device, including a housing 100, a main control unit, an ion generating component 300, a visualization component 500, and a first sampling circuit.

[0051] The housing, as the main supporting structure of the air sterilization device, primarily serves to create a containment space. The housing can be any possible shape, such as cylindrical, cuboid, or a specific object shape; this application does not limit its shape. For example, such as... Figure 2 and Figure 3 As shown, the housing is shaped like a cuboid, including an upper shell 110 and a lower shell 120, with their sides connected together, forming a receiving space 101 between the upper shell 110 and the lower shell 120. The specific shape and size of the receiving space can vary depending on the housing configuration. Various components can be housed within the receiving space, such as an ion generating component, a large resistor, a main control unit, a battery, and sensors.

[0052] The casing is made of non-metallic materials, such as plastic, ceramic, rubber, and glass. It is understood that when the casing comprises multiple different components, these components can be made of the same or different materials, and this application does not limit this. For example, when the casing includes components such as side walls, a top cover, and a bottom cover, the side walls can be made of plastic or ceramic, and the top and bottom covers can be made of plastic or glass. As another example, when the casing includes components such as... Figure 3 When the upper shell 110 and lower shell 120 are shown, both the upper shell 110 and the lower shell 120 can be made of plastic or other materials, or they can each be made of different materials. It is also understood that in some cases, metal parts may be partially installed, mounted or embedded on the shell. This application does not limit this, as long as it does not affect the normal operation of the air disinfection equipment or the generation of cold spray ion wind.

[0053] Metal strips are provided on the outer surface of the housing, such as the side surface, and at least partially of the metal strips are exposed to the environment and can be touched by a user. This application does not limit the specific shape and number of the metal strips; they can be elliptical, square, oblong, irregularly shaped, etc., and are not required to be strip-shaped, as long as they provide a certain contact surface for the user to access. For example, such as... Figure 2 , Figure 3 and Figure 6 As shown, a metal strip 401 can be provided on each side of the housing 100, and mounting grooves (referred to as second mounting grooves 105 in this embodiment for easy distinction) are respectively opened on both sides of the housing. The metal strips 401 are adapted to be embedded in the second mounting grooves 105, with their outer surfaces exposed to the environment and flush or substantially flush with the outer surface of the housing. When the user holds the air sterilization device, they can naturally come into contact with these metal strips. Alternatively, the metal strips can also be provided on the first surface 111 of the upper shell, the second surface of the lower shell, or other locations that are convenient for the user to access.

[0054] See Figure 3 , Figures 6 to 8A large resistor 402 is provided in the accommodating space 101. Large resistors are also commonly referred to as high-resistance resistors or high-value resistors. In this embodiment, the large resistor mainly refers to a resistor with a resistance value at the kiloohm level or higher. Exemplarily, the resistance value of the large resistor can reach the megaohm level or higher, so that the current passing through the large resistor during operation of the air sterilization device does not exceed the microamp level, thereby meeting higher product standards, such as medical electrical equipment standards. It is understood that the large resistor in this embodiment can refer to a single resistor or a component composed of multiple resistors and other possible electronic components; this application does not limit this, as long as its resistance value reaches at least the kiloohm level.

[0055] One end of the large resistor 402 is electrically connected to the metal strip 401, and the other end is grounded. This forms a path from the metal strip, the large resistor, to the ground terminal; for ease of distinction, this path is referred to as the first path in this embodiment. In some implementations, a digital ground can be provided on the circuit board (e.g., the main control board) of the air sterilization device, and the other end of the large resistor can be directly or indirectly connected to this digital ground. Of course, in other implementations, the other end of the large resistor can also be directly or indirectly connected to analog ground or signal ground, etc.

[0056] The main control unit can be housed in the accommodating space 101. A control unit generally refers to a unit capable of issuing various control commands to control the operation of connected components to achieve certain specific functions. In the scheme of this application, the control unit is used as the main controller of the air disinfection device, and is therefore referred to as the main control unit. For example, a microcontroller unit (MCU) or similar device can be used as the main control unit of the air disinfection device.

[0057] Optionally, the main control unit, large resistor, etc., can be mounted on the main control board. The connection lines between the large resistor and the metal strip, and between the large resistor and the main control unit, can also be mounted on the main control board. In one implementation, see [link to implementation details]. Figure 3 , Figures 6 to 8The metal strip 401 may have an ear 4011. A through hole 211 corresponding to the ear 4011 is provided on the first area 210 of the main control board. A copper-clad layer (referred to as the first copper-clad layer in this embodiment for easy distinction, not shown in the figure) is provided in the through hole 211. The conductive fastener 801 passes through the ear 4011 and the through hole 211 in sequence and is connected to the housing 100, thereby fixing the metal strip 401 and the main control board 200 to the housing 100, for example, to the upper housing 110. In this way, while assembling these components, the metal strip is electrically connected to the main control board through the conductive fastener and the first copper-clad layer, thereby forming the aforementioned first passage. Compared with the previous design that uses elastic elements, connectors, etc. to form the first passage, the structure of this method is simpler, the assembly complexity is relatively low, and there are fewer connection nodes in the entire first passage, thus making the electrical characteristics of the device relatively reliable and the cost relatively low.

[0058] The ion generating component is primarily used to generate and release electrons. Electrons have extremely short lifetimes (nanoseconds) and cannot persist in air for long periods. Furthermore, their affinity for oxygen is far greater than that for other gases in the air, such as N2. Since the CO2 content in the air is much lower than that of O2, most of the electrons generated by ionization are captured by oxygen to form negative oxygen ions, which are then transported into the ambient space. The ion generating component in this embodiment can be an existing ion generator or other possible structures. It is understood that the ion generating component is typically grounded, either directly or indirectly.

[0059] The ion generating component can be electrically connected to the main control unit, which can output control signals to control its generation and release of electrons.

[0060] See also some possible implementations. Figure 3 and Figure 5 An opening is provided on the first surface 111 of the housing 100, forming a mounting groove (hereinafter referred to as the first mounting groove 104 for easy distinction). The ion generating component 300 may include a carbon brush 301, which is mounted in the first mounting groove 104 via a carbon brush plate 302. Its bottom is connected to the carbon brush plate 302, and its top faces the external environment of the housing. The ion generating component 300 can raise the low voltage to obtain the required DC negative high voltage. Under the action of the DC negative high voltage, a negative corona discharge occurs, and the air is continuously ionized, thereby forming a large number of positive and negative ion pairs. The positive ions move towards the bottom of the carbon brush due to the negative high voltage and eventually neutralize it, while a large number of electrons are rapidly released into the air through the top of the carbon brush.

[0061] This air disinfection device can operate in both open and closed modes. These modes correspond to whether the conductive medium in the user's environment is in contact with the metal strip or not. In open mode, a large number of electrons are released into the air through the carbon brush tip and captured by oxygen to form negative oxygen ions. These negative oxygen ions are then repelled by the negative high-voltage electric field, creating a negative ion wind. This open structure uses the carbon brush as the negative electrode and the entire space where the air disinfection device is located (e.g., the ground, a tabletop) as the positive electrode. This creates a high-voltage electrostatic field between the positive and negative electrodes, filling the entire space with this field. This significantly enhances the diffusion of negative oxygen ions into the surrounding space, resulting in good diffusion and a high ion concentration, making it suitable for providing effective disinfection in indoor spaces. When the user's body is in contact with the metal strip, such as when the user holds the air disinfection device, the device operates in closed mode. Under the influence of the negative high voltage, the carbon brush tip also rapidly releases electrons into the air, forming negative oxygen ions. Unlike other methods, this method involves the user's body contacting a metal strip, which is grounded through a high resistance. The user's body is at a high potential relative to the carbon brush (negative high voltage), creating a closed electrode between the carbon brush and the body. This generates a strong electric field, causing more negative oxygen ions near the carbon brush to be transported towards the user's area (e.g., the head and face), forming a directional cold-spray negative ion airflow. This locally increases the concentration of negative oxygen ions in the area, improving local disinfection. Simultaneously, because the cold-spray negative ion airflow is directed towards the body, it also enhances the body's ability to inhale negative oxygen ions through the respiratory tract, thereby strengthening cardiovascular function and improving overall bodily functions. Furthermore, the high resistance prevents the electric field strength between the carbon brush and the body from becoming excessively high, thus minimizing ozone production in the closed-loop operation and effectively preventing ozone exceedances.

[0062] Optionally, see Figure 3 The ion generating unit 300 may also include a first protective cover 303, which is semi-enclosed around the outer periphery of the carbon brush plate 302 to isolate the carbon brush plate 302 from some components (such as high voltage generating circuits) in the housing space.

[0063] Visualization components primarily refer to parts that can be visually observed by users. They can display the directed release of electrons by an ion-generating component through different visual effects, such as whether the ion-generating component is currently releasing electrons into a specific conductive medium in the user's environment, i.e., whether it is operating in a closed-loop mode. Besides displaying whether it is, in some possible implementations, visualization components can also show the quantity, order of magnitude, and strength of the negative ion wind generated by the directed release of electrons.

[0064] The visualization component can be electrically connected to the main control unit, and the main control unit can output control signals to it to control its display.

[0065] In some implementations, the visualization component may include a light source, which may be positioned above or below the outer surface of the housing, as long as light is available for the user to observe from outside the housing when the light source is turned on.

[0066] In other implementations, see Figures 2 to 5 The visualization component 500 may include a light source 502 and a light guide strip 501. The light source 502 is disposed in the receiving space 101 and electrically connected to the main control unit. Exemplarily, the light source 502 may be in the form of an LED bead or similar material, and may be integrated onto the main control board 200. The light guide strip 501 is disposed on the outer surface of the housing 100 to guide the light emitted by the light source 502 onto the outer surface of the housing 100, thereby obtaining a softer and more uniform visual effect for the user to observe. The light source inlet end 5011 of the light guide strip 501 may be in close contact with the light source 502, thereby guiding as much light as possible onto the outer surface of the housing.

[0067] Optionally, see Figure 4 The light guide strip 501 can be set on the first surface 111 of the housing 100, that is, the side with the first mounting groove 104. In this way, when the user picks up the air sterilizer and puts it into closed operation, the tops of the light guide strip 501 and the carbon brush 301 face the user, so that the user can simultaneously feel the cold spray ion wind and visually observe the light effect.

[0068] Optionally, the light guide strip can be in various possible shapes, such as linear, arc-shaped, or ring-shaped, and this application does not limit this. For example, see [link to example]. Figure 3 and Figure 4 The main body of the light guide strip 501 is ring-shaped and surrounds the outer periphery of the carbon brush. Alternatively, the light guide strip can also be linear and positioned on the housing surface between the carbon brush 301 and the button 600.

[0069] Optionally, see Figure 4 and Figure 5 A receiving groove 103 is formed on the housing 100, and the light guide strip 501 is embedded in the receiving groove 103, so that the light guide strip 501 is slightly lower than or basically flush with the surface of the housing.

[0070] Optionally, a decorative panel can be provided on the surface of the housing to cover the light guide strip and is at least partially made of a light-transmitting material. The decorative panel can be partially or entirely made of materials such as glass, acrylic, or plastic, and can be manufactured using existing processes such as in-mold injection molding. This application does not limit the specific materials and manufacturing processes. For example, the decorative panel 130 may have a partially light-transmitting area, through which light emitted or transmitted by a light source and / or light guide strip located below the decorative panel 130 can pass and be observed by the user. The decorative panel can be connected to the housing by snap-fit, adhesive, or other means; this application does not limit the specific connection method. This approach has minimal or no impact on the display effect of the visualization components and also protects the components it covers, including the light guide strip. For example, see [link to relevant documentation]. Figures 3 to 5 A decorative panel 130 is provided on the first surface 111 of the housing 100. The decorative panel 130 has a first opening 107 corresponding to the first mounting groove 104 on the first surface 111, which facilitates the release of negative oxygen ions.

[0071] It is understood that the visualization component may also include other possible parts, which are not limited in this application.

[0072] The control method provided in this application embodiment can be applied to any of the air disinfection devices or other possible air disinfection devices in this application embodiment. This method can be executed by a control unit, etc. The following uses the main control unit as the execution subject as an example to describe the control method. See also... Figure 1 , Figure 1 This is an exemplary flowchart of a control method according to an embodiment of this application. The method includes steps S901 to S902.

[0073] S901: Acquire the first signal, which is the signal of the first path acquired by the first sampling circuit.

[0074] In some implementations, the air disinfection device may include a first sampling circuit for collecting signals, such as current signals, from the first path. The collected signal can be directly used as the first signal, or processed and then used as the first signal, and input to the main control unit.

[0075] As mentioned earlier, the air sterilization equipment operates in an open mode when the conductive medium in the user's environment does not contact the metal strip, and in a closed mode when the user touches the metal strip. In the closed mode, the operation of the first path is a necessary condition for forming the directional cold spray ion wind. Therefore, the signals collected from the first path differ between the two different operating modes, allowing the main control unit to make a judgment. For example, when the user touches the metal strip, the first sampling circuit can output a high level as the first signal to the main control unit; when the user does not touch the metal strip, the first sampling circuit can output a low level as the first signal to the main control unit.

[0076] In some implementations, see Figure 12 The first sampling circuit may include a sampling resistor R8, a signal amplification unit, and a filtering unit. One end of the sampling resistor R8 is connected to the signal acquisition unit TP1, and the other end is connected to the acquisition ground GNDS. The signal amplification unit is connected to the sampling resistor R8. The filtering unit is connected to the signal amplification unit and the signal output terminal TP2, respectively. The signal output terminal TP2 can be connected to the main control unit.

[0077] The signal collector TP1 can collect free electrons in the air. The collected electrons flow through the sampling resistor R8, which generates a small potential difference across the sampling resistor R8. This potential difference is amplified by the signal amplification unit, filtered by the filter, and then outputs a relatively stable and reliable signal, namely the first signal mentioned above, through the signal output terminal TP2.

[0078] When the air purifier operates in an open environment, the metal strip acts as a signal collector TP1. When conductive media in the external environment (such as the human body, other metal objects, etc.) come into contact with the metal strip, these conductive media, together with the metal strip, act as the signal collector TP1, changing the area of ​​the signal collector and / or the distance between the signal collector and the carbon brush, thereby altering the number of electrons collected. For example, when a user touches the metal strip, the user's entire body can be considered part of the signal collector, thus increasing the area of ​​the signal collector and collecting more electrons from the environment. When the user touches the metal strip and moves, the distance between the signal collector and the carbon brush changes accordingly. For instance, when the user is closer to the carbon brush, the higher concentration of negative oxygen ions near the carbon brush also allows for the collection of more electrons from the environment. The electrons collected by the signal collector flow through the sampling resistor R8. Changes in the current flowing through R8 create a small change in the potential difference across R8, and correspondingly, the first signal also changes.

[0079] The analog ground GND in the signal amplification unit and the filtering unit are connected to the acquisition ground GNDS through resistor R9 to form a common reference ground.

[0080] Optionally, the first sampling circuit may also include a limiting protection unit to protect the signal amplification unit from damage due to excessive voltage.

[0081] Optionally, the first sampling circuit may also include a resistor R1, with one end of R1 connected to the metal strip and the other end connected to the sampling ground. This branch circuit is in the off state when the first sampling circuit is working normally, and in the conducting state when the input voltage is too high, dissipating the excessive electrical energy through R1, thereby playing a protective role.

[0082] S902: When the user touches the metal strip, a first control signal is output according to the first signal to control the visualization component of the air disinfection device to display the directional release of electrons by the carbon brush.

[0083] The direction of electron release by the carbon brush can be measured by factors such as whether the carbon brush is currently releasing electrons to the user, the quantity and magnitude of the released electrons, and the strength of the resulting negative ion wind.

[0084] When the air sterilizer operates in a closed system due to the contact of a conductive medium with the metal strip in the environment, the current in the first path will vary. The closer the distance between the metal strip and the carbon brush, the greater the current in the first path, and the corresponding first signal collected will also differ. Therefore, the correlation between the distance and the first signal can be pre-measured, and the correspondence between different first signals and different first control signals can be configured. In this way, the main control unit can determine the first control signal to be output based on the first signal and this correspondence.

[0085] The visualization component may include a light source. A first control signal can control one or more parameters of the light source, such as brightness, color, color temperature, and flicker frequency, thereby associating different directional release situations by displaying different visual effects. For example, the closer the user is to the carbon brush, the brighter or dimmer the light source can be, or the higher or lower the flicker frequency can be. Similarly, the closer the user is to the carbon brush, the more the first control signal can control the color or color temperature of the light source to change according to a preset pattern. When the user is very close to the carbon brush, excessively increasing the brightness or flicker frequency of the light source may cause the user to experience dizziness or lightheadedness. Therefore, using the aforementioned light guide strip and appropriate flicker frequency can effectively avoid such problems.

[0086] Optionally, the main control unit can output a second control signal when the user does not touch the metal strip, and the second control signal can control the light source to turn off.

[0087] There are several ways to determine whether a user has touched the metal strip.

[0088] For example, in some implementations, the main control unit can directly determine the first signal based on the acquired signal. The human body, as a specific conductive medium, may produce different currents in the first path when it comes into contact with a metal strip compared to other common conductive media in daily life. In some implementations, the correlation between different conductive media and the first signal can be pre-measured, allowing the main control unit to make a judgment based on different first signal conditions (e.g., whether the current magnitude represented by the first signal is within a preset threshold range).

[0089] In some implementations, the air sterilization device may also include a touch-sensing circuit electrically connected to the main control unit. This circuit senses whether a living organism has touched the metal strip and inputs the sensed signal (hereinafter referred to as the second signal for clarity) to the main control unit. For example, when a living organism touches the metal strip, the touch-sensing circuit outputs a high-level signal to the main control unit; when the living organism does not touch the metal strip, the touch-sensing circuit outputs a low-level signal to the main control unit. The main control unit receives the second signal and can directly determine whether the user has touched the metal strip based on it.

[0090] In some implementations, see Figure 10 The main control unit can also determine whether a user has touched the metal strip based on both the first and second signals. For example, the main control unit only confirms contact if both the first and second signals indicate that someone is touching the metal strip. Optionally, the step of determining whether a user has touched the metal strip based on the first and second signals may include: determining that the user has touched the metal strip if the current magnitude represented by the first signal is within a preset threshold range and the second signal indicates that the metal strip has been biologically touched. This approach can, to some extent, eliminate some false positives, thereby improving the accuracy of the visualization device in displaying the directed release of ions.

[0091] The touch sensing circuit can use existing circuitry or other possible implementations. For example, see... Figure 6 , Figure 7 and Figure 11The touch sensing circuit may include a second copper layer 221 and a second sampling circuit located in the receiving space. The second copper layer 221 is correspondingly disposed with respect to the metal strip 401, and the two are equivalent to forming a capacitor. The second copper layer is electrically connected to the second sampling circuit, and the second sampling circuit is electrically connected to the main control unit to transmit the sampled signal. When a user touches the metal strip, the user's body is at a high potential, changing the capacitance value, causing the signal sampled by the second sampling circuit to change. This allows the main control unit to determine that a living organism has touched the metal strip based on the second signal, and then output some control signals to other possible components, such as ion generating components, visualization components, etc. It is understood that the second sampling circuit can use an existing sampling circuit.

[0092] Using the aforementioned control method, when a user picks up the air sterilizer and faces it towards themselves, and their hand touches the metal strip on the device's casing, the user can not only feel the directional cold spray ion wind on their skin, but also directly observe the display effect of the visualization component, thereby obtaining more intuitive feedback and improving the user experience.

[0093] Optionally, see Figure 6 In the aforementioned touch sensing circuit, a second partition 143 is provided between the corresponding metal strip 401 and the second copper clad layer 221, so that the electrical gap formed between the metal strip 401 and the second copper clad layer 221 exceeds a preset safety value.

[0094] Electrical clearance generally refers to the shortest spatial distance measured between two conductive components or between a conductive component and the protective interface of equipment. The preset safety value can be the shortest distance that allows insulation to be achieved through air while ensuring stable and safe electrical performance, or any value greater than this shortest distance. An example value could be 2 cm.

[0095] During the closed-loop operation of the air sterilization equipment, the voltage is relatively high in the section from the metal strip to the large resistor in the first path, exceeding that in the section from the large resistor to the ground terminal. For ease of description, in this embodiment, the section from the metal strip to the large resistor in the first path is referred to as the first segment, and the section from the large resistor to the ground terminal is referred to as the second segment. It should be noted that the aforementioned first segment includes both the metal strip and the large resistor, while the second segment does not include the large resistor.

[0096] Optionally, the air disinfection device in this application embodiment may further include a first partition. The first partition and the second partition together can isolate the first section from other electronic components in the accommodating space, thereby increasing the electrical clearance between these electronic components on the first section and other electronic components, exceeding the preset safety value.

[0097] Other electronic components in the embodiments of this application mainly refer to components other than those mentioned in the first paragraph, such as capacitors, resistors, chips, etc. on the main control board, or Figure 7 Other electronic components 250 on the main control board shown, or batteries in the storage space, etc.

[0098] The air disinfection device in this application embodiment can be designed as a portable device, such as a handheld or wearable device. A handheld device mainly refers to a device that can be held by a user and easily carried between usage locations. In some cases, the device can be held by the user; in others, it can be placed or temporarily fixed, etc., and this application does not limit this. A wearable device mainly refers to a portable device that can be worn by a user, such as one that can be hung around the neck via a lanyard, or worn on the wrist or arm. Such usage scenarios typically require a small overall device size, and consequently, a smaller internal space. This places higher demands on product design, requiring both a more compact design of the internal components and ensuring that electrical clearances meet safety requirements.

[0099] In this embodiment, if the electrical gap between the metal strip and the second copper-clad layer is small, during the enclosed operation of the device, when the user touches the metal strip, the user's body is at a high potential, causing the metal strip to also be at a high potential, while the corresponding second copper-clad layer is at a low potential. When the potential difference between the two is large, the capacitor formed by them is easily broken down. High-voltage discharge can also easily damage other related electronic components (such as components in the second sampling circuit on the main control board, other capacitors, resistors, chips, etc.). Similarly, since the device carries a high-voltage charge, if the metal strip on the first section is not well isolated from other electronic components inside the device, high-voltage discharge can easily occur between the metal strip and other electronic components, especially those with small electrical gaps, which can easily damage these components. Furthermore, the device is also prone to generating ozone during high-voltage discharge. Adding a first barrier and a second barrier can effectively avoid the aforementioned high-voltage discharge situation. On the one hand, it can effectively prevent the breakdown of other electronic components, thereby improving the electrical reliability of the device. On the other hand, it can also further avoid the generation of excessive ozone, which could affect the user's health. Furthermore, the second barrier also prevents the charge from affecting the second copper layer in the touch-sensing circuit when the user touches the metal strip, thus preventing false sensing by the touch-sensing circuit, misjudgment by the main control unit, and subsequent false triggering of related actions, such as falsely triggering the light source to light up. The design of the first and second barriers provides a basis for the compact design of various components inside the device.

[0100] The first and second barriers can have various different settings and specific structures, as long as they can ensure that the electrical clearance requirements are met.

[0101] See Figure 7 In some implementations, if the main control unit, the large resistor 402, and the main connection lines between the large resistor and the metal strip are located on the main control board, a partition slot 230 can be opened on the main control board 200, allowing part or all of the second partition and the first partition to pass through the partition slot 230, making them higher than the main control board 200 by a certain height. This increases the electrical clearance between the electronic components on both sides of the partition 230. The partition slot 230 divides the main control board 200 into at least two regions. The electronic components on the first section, excluding the metal strip, can be located in one region (referred to as the first region 210 in this embodiment for easy distinction), and the other electronic components mentioned above can be located in the other region (referred to as the second region 220 in this embodiment for easy distinction).

[0102] The height difference ΔH between the top height of the second and first partitions and the height of the main control board 200 can be determined based on a preset safety value, which is greater than half of the preset safety value. For example, if the preset safety value is ≥2cm, then ΔH>1cm. The heights of the second and first partitions can be the same or different, and this application does not limit this.

[0103] Understandably, in some implementations, the air sterilization device has multiple metal strips positioned in different locations. To facilitate wiring, a first path can be constructed for each strip, which may require multiple first and second barriers. See also Figure 8 The air sterilizer has metal strips 401 on both sides. The two areas of the main control board 200 near the metal strips 401 are respectively configured with first passages, and are also respectively equipped with two first partitions and two second partitions for electrical isolation. The structures of the partitions on both sides can be the same or different, and this application does not limit them.

[0104] Optionally, one end of the first partition and one end of the second partition are connected to form a complete partition, which isolates the first segment from other electronic components.

[0105] Optionally, the first and second partitions can be independent components that can be installed within the housing, or they can be an integral part of the housing. See also Figure 9 and Figure 5 When the housing includes an upper shell 110 and a lower shell 120, the first partition and the second partition can be integrally formed with the upper shell 110, thereby simplifying the assembly process and improving production efficiency.

[0106] Optionally, the side of the second partition closest to the second copper-clad layer extends away from the metal strip, forming a bend. This bend further isolates a portion of the edge of the second copper-clad layer from the metal strip, preventing high-voltage discharge and false induction in the edge area of ​​the second copper-clad layer due to the small electrical clearance between it and the metal strip. See also Figures 6 to 8 Taking the second partition 143 on the left as an example, the upper side of the second partition 143 on the left, that is, the side closer to the second copper layer 221, can extend into the device, that is, away from the metal strip 401, forming a right-angle bend 141. This bend 141 wraps around part of the edge of the second copper layer 221 on the main control board 200, thereby better isolating it from the metal strip 401. In some implementations, the main control board 200 may also have a bending groove 240 adapted to the cross-section of the bend 141, for allowing the bend 141 to partially pass through the main control board 200. It is understood that when the shape or position of the second copper layer changes, the shape of the bend can also change accordingly, and this application does not limit this. The length of the bend can be set to more than 1 / 2 of a preset safety value, for example, more than 1 cm.

[0107] In some implementations, see Figure 3 and Figure 6 The air sterilization device may also include a battery 701, such as a lithium battery, to provide power to the entire device. A second protective cover 702 may be provided around the battery 701 to isolate a portion of the battery 701 from components (such as chips and resistors on the main control board) within the housing space. Optionally, the second protective cover 702 abuts against one end of the aforementioned bent portion 141 for positioning. In this manner, the bent portion can also serve as a positioning component when installing the battery and / or the protective cover, reducing assembly difficulty and improving assembly efficiency.

[0108] Optionally, see Figure 7 In addition to the main control unit and the large resistor 401, the second copper layer 221, the second sampling circuit, and the connecting lines between them can also be integrated on the main control board 200. This sampling implementation method can reduce the number of components, further improve the electrical reliability of the equipment, simplify the assembly process, and reduce production costs.

[0109] The air disinfection device in this application adopts a stacked design, which ensures reliable electrical performance while having a simple and compact structure and small size. Furthermore, the reduced number of components reduces assembly complexity and product cost.

[0110] Optionally, the air sterilization device also includes a button assembly 600, which can be exemplarily mounted on the housing, for example, in the third mounting slot 106 of the upper housing, such as... Figure 2 and Figure 3 As shown. Users can control the air sterilization equipment by operating the button component 600, such as controlling its on / off state.

[0111] In some implementations, especially for wearable devices, users may wear them around their neck or wrist. During prolonged wear, the device is likely to come into contact with water, such as water accidentally spilled while drinking or water from washing hands. To prevent this water from entering the casing from the outside, various implementation methods can be used.

[0112] In some implementations, see Figure 3 The button assembly 600 may include a button 610 and a waterproof plug 620. The waterproof plug 620 is used to prevent water from entering the device from the third mounting slot 106, which could cause the device to malfunction.

[0113] Optionally, one end of the button passes through the third mounting groove on the housing and extends into the receiving space, abutting against the mechanical control switch on the main control board. At least a portion of the other end of the button can be contacted by the user for convenient operation. A waterproof plug is disposed on the outer periphery of the button, tightly fitting with both the button and the third mounting groove. This serves both to provide waterproofing and to limit the button's movement, preventing it from becoming loose.

[0114] For example, see Figure 3 and Figure 5 The key 610 may include a keycap 611 and a keypost 612. The keycap 611 is located in the third mounting groove 106, and its partial surface is flush with, approximately flush with, or slightly higher than the surface of the housing 100, allowing it to be touched by the user for convenient operation. The keypost 612 passes through the third mounting groove 106 and abuts against the mechanical control switch 260. The waterproof plug 620 has a first tight-fitting part 621 and a second tight-fitting part 622. The first tight-fitting part 621 is wrapped around the outer periphery of the keypost 612 and is at least tightly fitted to the keypost 612. The second tight-fitting part 622 is wrapped around the outer periphery of the first tight-fitting part 621 and is at least tightly fitted to the third mounting groove 106, thereby achieving a better waterproof effect.

[0115] Optionally, see Figure 5The first tight-fitting part 621 and the second tight-fitting part 622 can also abut against the keycap 611 to increase the contact area between the waterproof plug 620 and the key 610 and the third mounting groove 106, respectively, thereby further improving the waterproof effect. A first cavity 623 is formed between the first tight-fitting part 621, the second tight-fitting part 622 and the keycap 611. In this way, even if a small amount of water seeps in from between the second tight-fitting part and the keycap, it will be retained in the first cavity and will be difficult to seep into the device through the area between the first tight-fitting part and the key post, thereby further improving the waterproof effect.

[0116] Optionally, see Figure 5 The third mounting groove 106 is provided with at least one step 1061, and the second tight fit part 622 is properly matched with at least one step 1061, thereby increasing the contact area between the second tight fit part 622 and the third mounting groove 106 and improving the waterproof effect.

[0117] In other implementations, when the housing is an upper shell or a lower shell, ultrasonic welding or other processes can be used to weld the side edges of the upper shell and the lower shell together, effectively preventing water from entering the equipment from the joint.

[0118] It should be understood that the air disinfection device in the embodiments of this application may also include other possible components, parts, and devices, such as mechanical or electronic switches / operators, sensors, etc.

[0119] Those skilled in the art will understand that, in addition to providing a control method for air disinfection equipment, the embodiments of this application can also be provided as a computer-readable storage medium or a computer program product. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware.

[0120] This application may also take the form of a computer program product implemented on one or more computer-readable storage media containing computer-usable program code. That is, embodiments of this application also provide a computer-readable storage medium storing a computer program, which, when executed by a processor, causes the processor to perform some or all of the steps in any implementation of the aforementioned control method. The processor in embodiments of this application may, exemplarily, be a microcontroller unit (MCU), a central processing unit (CPU), a network processor (NP), a digital signal processor (DSP), a programmable logic device (PLD), etc., and this application does not limit it to these categories.

[0121] When implemented in software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium.

[0122] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0123] It should be understood that in various embodiments of the control method of this application, the execution order of each step should be determined by its function and internal logic, and the size of each step number does not mean the order of execution, and does not constitute any limitation on the implementation process of the embodiment.

[0124] It should also be understood that in the description of this application, the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These directions and positional relationships are for ease of description and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0125] It should also be understood that, unless otherwise explicitly specified, the terms "installation," "connection," "assembly," "fixing," etc., in the description of this application should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0126] It should also be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Unless otherwise explicitly specified, "multiple" means two or more.

[0127] The same or similar parts among the various embodiments in this specification can be referred to interchangeably. Different implementations in the above embodiments can be combined with each other as long as they do not contradict each other. The above embodiments do not constitute a limitation on the scope of protection of this invention.

Claims

1. A control method for use in air disinfection equipment, characterized in that, The method includes: A first signal is acquired, which is a signal of a first path collected by a first sampling circuit. The first path is a path formed by the metal strip of the air disinfection device, a large resistor and a ground terminal electrically connected. The first signal is used to characterize the current magnitude of the first path. A second signal is acquired, which is a signal collected by the touch sensing circuit. The second signal is used to characterize whether the metal strip is touched by the user. When the user touches the metal strip, the capacitance value of the capacitor is changed. Determining whether a user has touched the metal strip based on the first signal and the second signal includes: determining that the user has touched the metal strip when the current magnitude represented by the first signal is within a preset threshold range and the second signal indicates that the metal strip has been touched by the user. Upon determining that a user has touched the metal strip, a first control signal is output based on the first signal to control the visualization component of the air sterilization device to display the directional release of electrons by the carbon brushes in the air sterilization device.

2. The method according to claim 1, characterized in that, The visualization component includes a light source, and the first control signal can control one or more parameters of the light source, including brightness, color, color temperature, and flicker frequency.

3. An air disinfection device, characterized in that, It includes a housing, a main control unit, an ion generating component, a visualization component, a first sampling circuit, and a touch sensing circuit, among which, The housing is used to form a receiving space. A metal strip is provided on the outer surface of the housing. At least a portion of the metal strip is exposed to the environment and can be touched by the user. A large resistor is provided in the receiving space. One end of the large resistor is electrically connected to the metal strip, and the other end of the large resistor is grounded to form a first circuit. The ion generating component is disposed in the containment space and is electrically connected to the main control unit, and is used to generate and release electrons into the environment; The first sampling circuit is used to acquire a first signal on the first path, and the first signal is used to characterize the current magnitude of the first path; The touch sensing circuit is used to collect a second signal, which is used to characterize whether the metal strip is touched by the user. When the user touches the metal strip, the capacitance value of the capacitor is changed. The main control unit is disposed in the accommodating space and is used to determine whether a user has touched the metal strip based on the first signal and the second signal, including: determining that the user has touched the metal strip when the current magnitude represented by the first signal is within a preset threshold range and the second signal represents that the metal strip has been touched by the user; and further used to output a first control signal based on the first signal when it is determined that the user has touched the metal strip. The visualization component is electrically connected to the main control unit and is used to display the directional release of electrons by the carbon brush in the air disinfection device according to the first control signal.

4. The device according to claim 3, characterized in that, The first sampling circuit includes a sampling resistor, a signal amplification unit, and a filtering unit; wherein, one end of the sampling resistor is electrically connected to a metal strip, and the other end is grounded; the signal amplification unit is connected to one end of the sampling resistor; and the filtering unit is electrically connected to both the signal amplification unit and the main control unit.

5. The device according to any one of claims 3 to 4, characterized in that, The touch sensing circuit includes a second copper-clad layer and a second sampling circuit located in the accommodating space. The second copper-clad layer is disposed corresponding to the metal strip and is electrically connected to the second sampling circuit. The second sampling circuit is electrically connected to the main control unit. A second partition is disposed between the correspondingly disposed metal strip and the second copper-clad layer, so that the electrical gap formed between the metal strip and the second copper-clad layer exceeds a preset safety value.

6. The device according to claim 5, characterized in that, It also includes a first partition, and the first partition and the second partition cause the electrical clearance between the first segment formed by the metal strip to the large resistor in the first passage and other electronic components in the accommodating space to exceed a preset safety value.

7. The device according to any one of claims 3 to 4, characterized in that, It also includes a button assembly disposed on the housing, the button assembly including a button and a waterproof plug; One end of the button passes through the third mounting groove on the housing and extends into the receiving space, abutting against the mechanical control switch on the main control board; at least a portion of the other end of the button can be contacted by the user. The waterproof plug is disposed on the outer periphery of the button and is tightly fitted with the button and the third mounting groove, respectively.

8. The device according to claim 7, characterized in that, The key includes a keycap and a keypost. A portion of the surface of the keycap can be touched by the user. The keypost passes through the third mounting groove and abuts against the mechanical control switch. The waterproof plug has a first tight-fitting part and a second tight-fitting part. The first tight-fitting part is arranged around the outer periphery of the key post and is tight-fitting with the key post at least. The second tight-fitting part is tight-fitting with the third mounting groove at least.

9. The device according to claim 8, characterized in that, The first tight-fitting part and the second tight-fitting part also abut against the keycap, and a first cavity is formed between the first tight-fitting part, the second tight-fitting part and the keycap.

10. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it causes the processor to perform the method as described in any one of claims 1 to 2.

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