Fragrance diffusing apparatus and control method thereof

Abstract

The application relates to the technical field of fragrance equipment, and particularly discloses a fragrance diffusion device and a control method thereof, wherein the fragrance diffusion device comprises an atomization device and a control module; the control module stores historical preference data of a user and / or receives physiological data sent by a wearable device worn by the user, and sends the historical preference data and / or the physiological data to a server; the server generates a recommended fragrance type and / or a dynamic control instruction according to the received historical preference data and / or physiological data, and sends the generated recommended fragrance type and / or dynamic control instruction to a user terminal; then, the recommended fragrance type and / or dynamic control instruction confirmed by the user on the user terminal is sent to the control module; and the atomization device is used for executing adjustment instructions formed by the control module according to the recommended fragrance type and / or dynamic control instruction received by the control module, and atomizing and diffusing fragrance liquid. The fragrance diffusion device can recommend a spraying strategy to the user, and improves the experience of the user.

Description

Technical Field

[0001] This invention relates to the field of fragrance equipment technology, and in particular to a fragrance diffuser and its control method. Background Technology

[0002] With the rapid development of smart home and IoT technologies, fragrance devices are gradually evolving from traditional fixed modes towards intelligence and personalization. However, existing fragrance devices still have significant shortcomings in personalized recommendations, user behavior analysis, and environmental adaptation. Current fragrance devices typically rely on users manually selecting fragrances or preset modes, and cannot generate personalized recommendations based on users' fragrance preferences, historical usage data, and real-time environmental parameters, resulting in a poor user experience. Summary of the Invention

[0003] The present invention aims to solve the technical problems existing in the prior art and provide a fragrance diffuser and its control method, which can recommend spraying strategies to users and improve the user experience.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solutions:

[0005] The aroma diffuser of the present invention includes an atomizing device and a control module;

[0006] The control module stores the user's historical preference data and / or receives physiological data sent by the wearable device worn by the user, and sends the historical preference data and / or the physiological data to the server through the data transmission module. The server generates a recommended fragrance and / or dynamic adjustment instruction based on the received historical preference data and / or physiological data, and sends the generated recommended fragrance and / or dynamic adjustment instruction to the user terminal. Subsequently, the recommended fragrance and / or dynamic adjustment instruction confirmed by the user on the user terminal is sent to the control module through the data transmission module.

[0007] The atomizing device is used to execute adjustment instructions formed by the control module based on the recommended fragrance and / or dynamic control instructions it receives, and to atomize and diffuse the fragrance liquid.

[0008] Furthermore, the historical preference data includes one or more of the following: the frequency of the user's use of the diffuser, the fragrance type of the perfume liquid, and the time period of use;

[0009] Alternatively, the physiological data may include physiological state, exercise state, sleep data, or emotional state.

[0010] Furthermore, the aroma diffuser also includes a data acquisition module; the data acquisition module is used to collect environmental data, including temperature and humidity data, and send the environmental data to the server through a data transmission module. The server generates dynamic control instructions based on the received environmental data and sends the dynamic control instructions to the control module.

[0011] Furthermore, the server aggregates the historical preference data of all users in the region, combines it with environmental data to generate recommended fragrances and / or dynamic adjustment instructions, and sends the generated recommended fragrances and / or dynamic adjustment instructions to the user terminal.

[0012] Furthermore, the server uses a clustering algorithm to group the historical preference data of all users in the aggregated area according to their usage habits, extracts the recommended fragrance and / or dynamic control instructions corresponding to each group, and, in conjunction with the current environmental data, sends the most frequently used scheme in the same group to the user terminal.

[0013] Furthermore, the fragrance diffuser also includes a liquid level detection device, which is used to detect the actual liquid level data of the fragrance liquid in real time and send the actual liquid level data to the server through a data transmission module. The server compares the received actual liquid level data with a preset liquid level threshold. When the actual liquid level data is greater than the preset liquid level threshold, the server generates a dynamic control command based solely on environmental data. When the actual liquid level data is less than or equal to the preset liquid level threshold, the server generates a dynamic control command based solely on the actual liquid level data of the fragrance liquid, and simultaneously sends the remaining usage time of the fragrance liquid and the purchase link of the fragrance liquid to the user terminal.

[0014] Furthermore, the aroma diffuser also includes a liquid storage bottle connected to the atomizing device. The liquid storage bottle is made of insulating material. The liquid level detection device includes a liquid level detection electrode, a reference electrode, and a control module electrically connected to the liquid level detection electrode and the reference electrode. The liquid level detection electrode and the reference electrode are disposed on the outer wall of the liquid storage bottle or located outside the liquid storage bottle and spaced apart from the outer wall of the liquid storage bottle. The liquid level detection electrode extends along the liquid level height direction. At least one reference electrode is provided and is adjacent to the bottom of the liquid storage bottle. The control module calculates the liquid level height in the liquid storage bottle based on the detection signals of the liquid level detection electrode and the reference electrode.

[0015] Furthermore, the aroma diffuser also includes a housing, the atomizing device is connected to the housing, the housing has a receiving cavity, and the liquid storage bottle is located in the receiving cavity; the liquid level detection electrode and the reference electrode are installed on the inner wall of the receiving cavity, the control module is located in the housing and is spaced 0.1mm-20mm from the outer wall of the liquid storage bottle, preferably 1mm-5mm; or the liquid storage bottle is detachable from the receiving cavity, the liquid level detection electrode and the reference electrode are installed on the outer wall of the liquid storage bottle, the control module is located in the housing, the outer wall of the liquid storage bottle is also provided with contacts electrically connected to the liquid level detection electrode and the reference electrode, the inner wall of the receiving cavity is provided with contacts electrically connected to the control module, and when the liquid storage bottle is placed in the receiving cavity, the contacts on the liquid storage bottle contact the contacts on the inner wall of the receiving cavity;

[0016] Alternatively, the aroma diffuser may further include a housing, with the atomizing device connected to the housing. A main control circuit board is disposed inside the housing, and a receiving cavity is provided on the housing. The liquid storage bottle is located within the receiving cavity. The aroma diffuser may also include a liquid level detection circuit board, which is mounted on the outer wall of the liquid storage bottle. A liquid level detection electrode and a reference electrode are connected to the liquid level detection circuit board, and the liquid level detection electrode and the reference electrode are located on the inner side of the liquid level detection circuit board facing the liquid storage bottle. The control module is also mounted on the liquid level detection circuit board, and the liquid level detection circuit board is electrically connected to the main control circuit board.

[0017] The control method for a fragrance diffuser according to the present invention includes the following steps:

[0018] S1. The aroma diffuser stores the user's historical preference data and / or receives physiological data sent by the user's wearable device, and sends the historical preference data and / or the physiological data to the server;

[0019] S2. The server determines whether it has received only one of the historical preference data or the physiological data, or both. If it has received only one of the historical preference data or the physiological data, it generates a recommended fragrance and / or dynamic adjustment instruction based on the received historical preference data or the physiological data, and sends the recommended fragrance and / or dynamic adjustment instruction to the user terminal. If it has received both the historical preference data and the physiological data, it generates a recommended fragrance and / or dynamic adjustment instruction based on the physiological data, and sends the recommended fragrance and / or dynamic adjustment instruction to the user terminal. Alternatively, it generates a recommended fragrance and / or dynamic adjustment instruction based on the historical preference data and a recommended fragrance and / or dynamic adjustment instruction based on the physiological data, respectively, and sends them to the user terminal for selection.

[0020] S3. If the user confirms the recommended fragrance and / or dynamic adjustment command generated in step S2 on the user terminal, the server will send the user's confirmation to the diffuser and proceed to step S4; if the user does not confirm the recommended fragrance and / or dynamic adjustment command generated in step S2 on the user terminal, proceed to step S5.

[0021] S4. The fragrance diffuser atomizes and diffuses the fragrance liquid according to the received recommended fragrance type and / or dynamic control instructions;

[0022] S5. The fragrance diffuser continues to atomize and diffuse the fragrance liquid according to the current spraying plan; or the fragrance diffuser automatically adjusts the spraying plan according to the current environment and then atomizes and diffuses the fragrance liquid.

[0023] Furthermore, in step S1, the fragrance diffuser also collects environmental data of the surrounding environment and sends the environmental data to the server; in step S2, the server also generates a recommended fragrance type and / or dynamic control instruction based on the received environmental data, but does not need to send the recommended fragrance type and / or dynamic control instruction based on the environmental data to the user terminal; in step S3, the server determines whether the user has confirmed the recommended fragrance type and / or dynamic control instruction based on historical preference data or the recommended fragrance type and / or dynamic control instruction based on physiological data on the user terminal. If yes, proceed to step 4; if no, proceed to step S5; in step S5, the fragrance diffuser atomizes and diffuses the fragrance liquid according to the recommended fragrance type and / or dynamic control instruction based on the environmental data.

[0024] Alternatively, in step S1, the diffuser also detects the actual liquid level data of the fragrance liquid in real time and sends the actual liquid level data to the server; between step S1 and step S2, the server first compares the received actual liquid level data with a preset liquid level threshold; when the actual liquid level data is greater than the preset liquid level threshold, it proceeds to step S2; when the actual liquid level data is less than or equal to the preset liquid level threshold, the server generates a dynamic control command based solely on the actual liquid level data of the fragrance liquid and sends it to the diffuser. At the same time, the server sends the remaining usage time of the fragrance liquid and the purchase link of the fragrance liquid to the user terminal, and then proceeds to step S6; in step S6, the diffuser atomizes and diffuses the fragrance liquid according to the dynamic control command generated based on the actual liquid level data.

[0025] Furthermore, in step S2, the server also aggregates the historical preference data of all users in the region, generates common data, and combines it with environmental data to generate recommended fragrances and / or dynamic adjustment instructions, and sends the recommended fragrances and / or dynamic adjustment instructions generated based on the common data and environmental data to the user terminal for selection.

[0026] The aroma diffuser and its control method described in this invention can generate a suitable spraying strategy, i.e., fragrance type and / or dynamic adjustment instructions, based on the user's historical preference data or physiological data, and recommend it to the user. The user confirms whether to adopt the spraying strategy on the user terminal. After the user confirms the adoption of the spraying strategy, the atomizing device is controlled to execute the spraying strategy to improve the user experience. Attached Figure Description

[0027] The above and other objects, features, and advantages of the invention will become clearer through a more detailed description of the preferred embodiments illustrated in the accompanying drawings. The same reference numerals denote the same parts throughout the drawings, and the drawings are not intentionally drawn to scale with actual dimensions; the focus is on illustrating the gist of the invention.

[0028] Figure 1 This is a schematic diagram of the principle of the present invention.

[0029] Figure 2 This is a schematic diagram of one embodiment of the present invention.

[0030] Figure 3 This is a schematic diagram showing the alignment of the liquid level detection electrode and the reference electrode in this invention.

[0031] Figure 4 This is a schematic diagram showing the misalignment of the liquid level detection electrode and the reference electrode in this invention.

[0032] Figure 5 This is a schematic diagram of Embodiment 2 of the present invention.

[0033] Figure 6 This is a schematic diagram of Embodiment 3 of the present invention.

[0034] Figure 7 This is a schematic diagram of Embodiment 4 of the present invention.

[0035] Figure 8 This is a comparison chart of existing technologies that use only one set of test electrodes to detect liquid levels.

[0036] Figure 9 This is a comparison diagram of the liquid level detection using a reference electrode and a liquid level detection electrode in this invention.

[0037] Figure 10 This is a schematic diagram of Embodiment 5 of the present invention.

[0038] Figure 11 This is a cross-sectional schematic diagram of the installation relationship between the liquid storage bottle and the shell in Embodiment 5 of the present invention.

[0039] Figure 12 This is a schematic diagram of the shell structure in Embodiment 5 of the present invention.

[0040] Figure 13 This is a schematic diagram of Embodiment Six of the present invention.

[0041] Figure 14 This is a schematic diagram of Embodiment Seven of the present invention.

[0042] Figure 15 This is a schematic diagram of one of the structures in Embodiment Nine of the present invention. Detailed Implementation

[0043] To facilitate understanding of the present invention, a more comprehensive description will be given below with reference to the accompanying drawings.

[0044] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to and integrated with the other component, or there may be an intervening component present. The terms "mounted," "one end," "the other end," and similar expressions used in this document are for illustrative purposes only.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0046] This invention specifically provides an embodiment of a fragrance diffuser, see [link to embodiment]. Figure 1The diffuser includes a nebulizer and a control module. The control module stores the user's historical preference data and / or receives physiological data sent by the user's wearable device. This can be understood as the control module only storing the user's historical preference data, or only receiving the user's physiological data, or it can be understood as the control module storing both the user's historical preference data and receiving the user's physiological data, depending on the actual application of the diffuser. The diffuser sends the historical preference data and / or physiological data to the server through a data transmission module. The server generates recommended fragrance types and / or dynamic adjustment instructions based on the received historical preference data and / or physiological data. This can be understood as the server generating recommended fragrance types and / or dynamic adjustment instructions based only on one of the historical preference data or physiological data, or it can be understood as the server generating corresponding recommended fragrance types and / or dynamic adjustment instructions based on both historical preference data and physiological data. This involves recommending fragrance types and / or dynamic adjustment commands based on historical preference data, as well as recommending fragrance types and / or dynamic adjustment commands based on physiological data. The generated recommended fragrance types and / or dynamic adjustment commands are sent to the user terminal, where the user can select and confirm the corresponding recommended fragrance type and / or dynamic adjustment command. Subsequently, the server sends the recommended fragrance type and / or dynamic adjustment command confirmed by the user on the user terminal to the control module via the data transmission module. The recommended fragrance type and / or dynamic adjustment command can be understood as generating only one of the recommended fragrance type and dynamic adjustment command, or it can be understood as generating both simultaneously. Furthermore, the dynamic adjustment command includes adjusting one or more of the following: atomization volume, spraying frequency, atomization power, usage time of the diffuser, and usage frequency of the diffuser. The control module can be a microprocessor to ensure efficient and stable system operation. The atomizing device executes the adjustment commands generated by the control module based on the received recommended fragrance type and / or dynamic adjustment commands, and atomizes and diffuses the fragrance liquid. In addition, when it is necessary to generate recommended fragrances based on the user's physiological data, the server matches the fragrance with the user's physiological data to match the corresponding fragrance to the user's current physiological data, so as to improve the user experience. For example, when the user's heart rate is high or the user is nervous, there is a need for relaxation, so a soothing fragrance such as lavender or sandalwood can be recommended. When the user is tired after exercise, there is a need for refreshment, so a refreshing fragrance such as citrus or mint can be recommended. When the user has poor sleep quality, there is a need to improve sleep quality, so a sleep-aiding fragrance such as chamomile can be recommended. The server can first match various fragrances with the user's physiological data and store them in the server, that is, match the appropriate recommended fragrance using the formula Srecommed = Match(HR, E), where HR is the user's heart rate and E is the user's emotional state.

[0047] In a preferred embodiment, historical preference data includes one or more of the following: the user's frequency of using the diffuser, the fragrance type of the perfume liquid, and the usage time period. Specifically, the spraying time of the diffuser can be adjusted according to the user's usage frequency. For example, when the user has a high usage frequency, the spraying time is extended to increase the fragrance concentration; when the user has a low usage frequency, the spraying time is shortened to avoid fragrance waste. The diffuser can also recommend commonly used fragrance liquids based on the user's historical selections and simultaneously push purchase links so that customers can purchase consumables promptly. Furthermore, it can recommend modes such as a morning wake-up mode or an evening relaxation mode based on the user's past usage time periods. Of course, when the server generates recommended fragrance types and / or dynamic adjustment instructions based on the user's historical preference data, it can also combine the current season to generate recommended fragrance types and / or dynamic adjustment instructions that not only match the user's preferences but also the current season, and send them to the user's terminal for the user to choose from. The seasonal recommended fragrance types can be popular fragrances of the season, such as a refreshing summer fragrance or a warm winter fragrance. Personalized recommendations enhance the user experience.

[0048] In the preferred real-time example, physiological data includes physiological state, exercise state, sleep data, or emotional state. Specifically, the control module of the aroma diffuser can wirelessly connect with the user's wearable device via Bluetooth or other means to achieve data transmission. The physiological data can be the user's physiological state, such as heart rate, blood pressure, and body temperature; the user's exercise state, such as steps, activity level, and calorie consumption; the user's sleep data, such as deep sleep duration and sleep quality score; or the user's emotional state, such as inferring emotions (e.g., relaxation or tension) through heart rate variability (HRV). The dynamic control commands generated based on the user's physiological data mainly adjust the atomization volume and spraying frequency of the aroma diffuser. The actual atomization volume Q2 = Q1 * (1 + kA * A), where Q1 is the preset base atomization volume. The quantity, kA is the influence coefficient of the motion state. This influence coefficient of the motion state is an empirical value, which is preset content set by technicians and stored on the server. For example, kA = 0.1 / level, A is the motion state, and A is also preset content, obtained by technicians through experiments. The actual spraying frequency F2 = F1*(1+kE*E), F1 is the preset basic spraying frequency, and kE is the influence coefficient of the emotional state. This influence coefficient of the emotional state is an empirical value, which is preset content set by technicians and stored on the server. For example, kE = 0.05 / level, E is the emotional state, and E is also preset content, obtained by technicians through experiments.

[0049] In a preferred embodiment, the aroma diffuser further includes a data acquisition module. This module collects environmental data, including temperature and humidity data, and sends this data to a server via a data transmission module. The server generates dynamic control commands based on the received environmental data and sends these commands to the control module. Specifically, environmental data can be collected periodically at set intervals. The data acquisition module can be a temperature and humidity sensor, installed within the aroma diffuser. This sensor detects the temperature and humidity of the environment surrounding the diffuser. The server generates dynamic control commands based on the received environmental data and sends them to the control module of the aroma diffuser, enabling the diffuser to automatically adjust its spray frequency, atomization volume, or atomization power, making it more intelligent and further enhancing the user experience. In this embodiment, the dynamic control commands generated based on the environmental data include the actual atomization volume Q2 generated by the server, and the temperature and humidity data include the actual ambient temperature data T3. The server compares the received actual ambient temperature data T3 with a preset base temperature T1, and then uses the formula Q1*[1+K] to adjust the humidity. T *(T3-T1)】Generates the actual atomization amount Q2, where Q1 is the preset base atomization amount, K T The temperature influence coefficient is used; and the generated actual atomization amount Q2 is sent to the control module. Specifically, the preset base atomization amount Q1 and the preset base temperature T1 are preset contents stored on the server, while the temperature influence coefficient K... T These are experience-based values, also preset by technicians and stored on the server. Two examples illustrate this: Example 1: Q1 is preset to 1 mL / min, T1 to 25℃, K... T Given a current ambient temperature T3 of 30℃, the atomization rate at the current temperature T3, calculated using the above formula, should be Q2 = 1 * [1 + 0.02 * (30 - 25)] = 1.1 mL / min. Example 2: Pre-set Q1 to 1 mL / min, T1 to 25℃, K... T Given that the actual ambient temperature T3 is 20℃, the atomization rate at the current temperature T3 should be Q2 = 1 * [1 + 0.02 * (20 - 25)] = 0.9 mL / min, calculated using the above formula. Additionally, the dynamic control command includes the actual atomization power P2 generated by the server, and the temperature and humidity data includes the actual ambient temperature T3. The server compares the received actual ambient temperature T3 with the preset temperature threshold T2. When T3 > T2, the atomization rate is increased using the formula P1 * [1 - K... P*(T3-T2)】Generates the actual atomization power P2, where P1 is the preset base atomization power, K P This is the power reduction coefficient; and the generated actual atomization power P2 is sent to the control module. Specifically, the set base atomization power P1 and the preset temperature threshold T2 are preset values ​​stored on the server, while the power reduction coefficient K... P These are experience-based values, also preset by technicians and stored on the server. The following example illustrates this: P1 is preset to 10W, T2 to 28℃, and K... P Given a current ambient temperature T3 of 30℃, the atomization power at the current temperature T3, calculated using the above formula, should be P2 = 10 * [1 - 0.03 * (30 - 28)] = 9.4W. It should be noted that when T3 ≤ T2 and the actual liquid level of the fragrance liquid is above the preset liquid level threshold, no adjustment of the atomization power is required. Furthermore, the dynamic control command generated based on environmental data also includes the actual spraying frequency F2 generated by the server, and the temperature and humidity data, including the actual ambient humidity data H2. The server compares the received actual ambient humidity data H2 with the preset base humidity H1, and calculates the atomization power using the formula F1 * [1 - K]. H *(H2-H1)】Generates the actual spraying frequency F2, where F1 is the preset base spraying frequency, K H The humidity influence coefficient is calculated, and the generated actual spraying frequency F2 is sent to the control module. Specifically, the set base spraying frequency F1 and the preset base humidity H1 are preset values ​​stored on the server, while the humidity influence coefficient K... H These are experience-based values, also preset by technical personnel and stored on the server. Two examples illustrate this: Example 1: F1 is preset to 10 times / min, H1 to 50%, K... H Given a humidity level of 0.01%, and the current actual ambient humidity H2 is 75%, the actual spraying frequency under the current humidity H2, calculated using the above formula, should be F2 = 10 * [1 - 0.01 * (75 - 50)] = 7.5 times / min. Example 2: Pre-set F1 to 10 times / min, H1 to 50%, K... H Given that the actual humidity is 0.01%, and the current actual ambient humidity data H2 is 35%, the spraying frequency under the current humidity H2 should be F2 = 10 * [1 - 0.01 * (35 - 50)] = 8.5 times / min.

[0050] This diffuser can collect environmental data in real time and generate a spraying strategy suitable for the environment in which the diffuser is located, i.e., a dynamic control command, to realize the automatic adjustment of the diffuser and improve the user experience.

[0051] In a preferred embodiment, the server aggregates historical preference data of all users within the region and combines it with environmental data to generate recommended fragrances and / or dynamic control instructions, which are then sent to the user terminal. Specifically, the server uses a clustering algorithm (such as K-Means) to group the historical preference data of all users within the aggregated region according to usage habits, extracts the corresponding mainstream fragrances and / or dynamic control instructions for each group (where the region is a pre-defined area), and combines it with current environmental data to send the most frequently used schemes within the same group to the user terminal. It then generates recommended fragrances and / or dynamic control instructions based on the environmental data and sends these instructions to the user terminal. Through this method, by analyzing the usage preferences of users within the region, the most popular fragrances (i.e., mainstream fragrances, i.e., recommended fragrances) and spraying schemes (i.e., spraying frequency, atomization volume, atomization power, usage frequency, or atomization duration, etc.) can be determined and used as the basis for recommendations to users, enhancing the adaptability of the schemes and the user experience.

[0052] The aforementioned dynamic control commands based on environmental data (Command 1), user physiological data (Command 2), regional user commonality (Command 3), and user preferences (Command 4) all require user confirmation for Commands 2, 3, and 4. If the user confirms, the diffuser will execute Command 2, 3, or 4 first. If the user does not confirm, Command 1 will be executed. For Commands 2, 3, and 4, the server can send all three options to the user terminal simultaneously, allowing the user to choose the appropriate command based on their needs. Alternatively, if all three conditions exist simultaneously or only two exist, a priority order can be set: Command 2 will be sent first, followed by Command 4. Only if neither of the conditions for Commands 2 and 4 exists will Command 3 be sent. This allows for user interaction, personalized recommendations, and an improved user experience.

[0053] In addition, when recommending fragrances, it is mainly for multiple fragrance diffusers working together, with each diffuser having a different fragrance liquid. It can also be for the same diffuser, but it has at least two storage bottles for storing fragrance liquid, each storing a different fragrance liquid. Based on the user's selection, it automatically switches to the corresponding fragrance. This type of fragrance diffuser with multiple storage bottles and corresponding physical and chemical devices is existing technology.

[0054] In a preferred embodiment, the data transmission module sends the data (e.g., environmental data, physiological data, user historical preference data, etc.) to the server in a segmented transmission and breakpoint resume manner. The data transmission module includes a data encryption unit, a data compression unit, and a communication unit. The data encryption unit uses an encryption algorithm to encrypt the received environmental data; the data compression unit uses a compression algorithm to compress the environmental data; and the communication unit is used to enable communication between the control module and the server. Through data encryption, compression, and breakpoint resume functions, the security, efficiency, and reliability of data transmission can be ensured.

[0055] In a preferred embodiment, the control module can be a microprocessor. The microprocessor automatically switches the operating mode of the fragrance device based on environmental parameters, user preferences, etc. The operating modes include one or more of energy-saving mode, high-concentration mode, and timed spraying mode. The control module is located within the fragrance device. By switching between multiple modes, the applicability, reliability, and user experience of the fragrance device can be enhanced.

[0056] In this embodiment, the user terminal can be a mobile app. By recommending solutions on the user terminal, the user's interactive experience and ease of operation can be further improved. The server can be a local server or a cloud server; when the server is a cloud server, the data transmission module transmits data with the cloud server through an IoT link.

[0057] In a preferred embodiment, the fragrance diffuser further includes a liquid level detection device, which is used to detect the actual liquid level data of the fragrance liquid in real time and send the actual liquid level data to the server through a data transmission module. The server compares the received actual liquid level data with a preset liquid level threshold. When the actual liquid level data is greater than the preset liquid level threshold, the server generates a dynamic control command based solely on environmental data. In addition, if the user's physiological data and common user data within the area are also available, the server generates a corresponding dynamic control command according to the aforementioned priority level. When the actual liquid level data is less than or equal to the preset liquid level threshold, the server generates a dynamic control command based solely on the actual liquid level data of the fragrance liquid and simultaneously sends the remaining usage time of the fragrance liquid and the purchase link of the fragrance liquid to the user terminal. Specifically, when the actual liquid level is less than or equal to the preset liquid level threshold, the server adjusts the spraying frequency and atomization amount based solely on the actual liquid level of the fragrance liquid. Specifically, the server generates the atomization amount Q3 in low-liquid-level mode using the formula Q2*R, and the spraying frequency F3 in low-liquid-level mode using the formula F2*R, where R is the intensity reduction coefficient. The server then sends the generated atomization amount Q3 and spraying frequency F3 in low-liquid-level mode to the user terminal to remind the user to confirm the dynamic control command formed by the atomization amount Q3 and spraying frequency F3 in low-liquid-level mode. This reduces fragrance liquid consumption and ensures timely replenishment or replacement. Simultaneously, the server also sends the remaining usage time of the fragrance liquid and a purchase link to the user terminal, enabling the user to conveniently purchase consumables.The aforementioned intensity reduction coefficient R is an empirical value, also preset by technicians and stored on the server. Two examples illustrate this: Example 1: The preset R is 0.5, representing a 50% reduction. Based on the aforementioned data, the current actual atomization rate Q2 is calculated. It should be noted that the current actual atomization rate can be generated based on temperature and humidity data, user physiological data, or common user data within the area. The appropriate method should be chosen based on the actual situation. In this embodiment, it is assumed that the current actual atomization rate is generated based on temperature and humidity data. Therefore, according to one of the aforementioned embodiments, Q2 can be calculated as 1.1 mL / min. Then, using the above formula, the value of Q2 at the current low liquid concentration can be calculated. In low-level mode, the atomization rate should be Q3 = 1.1 * 0.5 = 0.55 mL / min. In example two, the preset R is 0.5, representing a 50% reduction. Based on the aforementioned data, the actual spraying frequency F3 is calculated. It should be noted that the actual spraying frequency can be generated based on temperature and humidity data, user physiological data, or common user data within the area. In this embodiment, assuming the actual spraying frequency is generated based on temperature and humidity data, F2 can be calculated as 7.5 times / min according to one of the aforementioned embodiments. Using the above formula, the spraying frequency in the current low-level mode should be F3 = 7.5 * 0.5 = 3.75 times / min. By monitoring the remaining amount of fragrance liquid in the diffuser and combining it with a specific server algorithm, rapid consumption of fragrance liquid without timely replenishment or replacement can be avoided, thus extending the lifespan of consumables.

[0058] In a preferred embodiment, the aroma diffuser further includes a storage bottle, and the liquid level detection device includes a liquid level detection electrode and a reference electrode. The liquid level detection electrode and the reference electrode are electrically connected to the control module. The liquid level detection electrode and the reference electrode are disposed on the outer wall of the storage bottle or located outside the storage bottle and in the gap between the storage bottle and the outer wall of the storage bottle. The liquid level detection electrode and the reference electrode are distributed along the liquid level height direction. The control module calculates the liquid level height in the storage bottle based on the detection signals of the liquid level detection electrode and the reference electrode.

[0059] In a preferred embodiment, the server further generates the remaining usage time M of the fragrance liquid based on the actual liquid level data L2, the atomization volume Q3 in the liquid level mode, and the spraying frequency F3 in the low liquid level mode, using the formula M = L2 / (P3*F3); and sends the remaining time M to the user terminal to remind the user to replace or add fragrance liquid. Specifically, based on the aforementioned spraying frequency F3 in the low liquid level mode, the atomization volume Q3 in the low liquid level mode, and the actual liquid level data L2, the remaining usage time of the fragrance liquid can be calculated using the above formula. By monitoring the remaining usage time of the fragrance liquid and promptly notifying the user on the user terminal to replenish or replace the fragrance liquid, an automatic ordering service can also be enabled, reducing the management burden.

[0060] In preferred embodiments, the liquid level detection device has multiple implementations. This invention provides nine specific implementations, as follows:

[0061] First implementation method: See Figure 2-3 The fragrance device also includes a liquid storage bottle 1 connected to an atomizing device. The liquid storage bottle 1 is made of insulating material. The atomizing device is used to atomize the liquid in the liquid storage bottle 1 and diffuse it outwards. The fragrance diffuser also includes a liquid level detection electrode 2, a reference electrode 3, and a control module electrically connected to the liquid level detection electrode 2 and the reference electrode 3. The liquid level detection electrode 2 and the reference electrode 3 are disposed on the outer wall of the liquid storage bottle 1. The liquid level detection electrode 2 extends along the liquid level height direction. At least one reference electrode 3 is disposed and is adjacent to the bottom of the liquid storage bottle 1. The control module 4 calculates the liquid level height in the liquid storage bottle based on the detection signals of the liquid level detection electrode 2 and the reference electrode 3.

[0062] The liquid level is detected by reference electrode 3 and liquid level detection electrode 2. Liquid level detection electrode 2 extends along the liquid level height direction, so that any liquid level height of the storage bottle 1 can be measured.

[0063] Both the reference electrode 3 and the liquid level detection electrode 2 are non-contact capacitive sensors, and are attached to the outer wall of the storage bottle 1. When the liquid level changes, the frequency of the electrodes changes. In a preferred embodiment, a groove is recessed inward from the outer wall of the storage bottle 1; the reference electrode 3 and the liquid level detection electrode 2 are attached to the groove.

[0064] In a preferred embodiment, one end of the reference electrode 3 is flush with the bottom of the storage bottle 1, and one end of the liquid level detection electrode 2 is flush with the top of the storage bottle 1; this enables accurate detection of the liquid level from the bottom to the top of the storage bottle 1.

[0065] The liquid level detection electrode 2 and the reference electrode 3 are distributed along the height direction of the liquid storage bottle 1, so that the electrodes on the liquid storage bottle 1 are set in a split manner. This can avoid the electrodes being too long and the electrode area being too large, which would lead to increased error. By setting the distributed electrodes, the area of ​​each electrode is reduced, thus reducing the error.

[0066] When detecting the liquid level height, the current liquid level height is determined by the frequency change of the liquid level detection electrode 2 and the frequency change of the reference electrode 3; the current frequency change ratio Cc is determined by the ratio of the frequency change Cey of the liquid level detection electrode 2 to the frequency change Cex of the reference electrode 3; and the corresponding liquid level height is determined by the current frequency change ratio Cc, where Cc = Cey / Cex.

[0067] Multiple liquid level detection electrodes 2 are provided, and in the direction of liquid level height, the liquid level detection electrodes 2 are located above the reference electrodes 3. In one preferred embodiment, two reference electrodes 3 are provided; the number of liquid level detection electrodes 2 is a positive integer multiple of the number of reference electrodes 3; the two reference electrodes 3 and every two liquid level detection electrodes 2 are distributed along the direction of liquid level height, and the reference electrodes 3 and liquid level detection electrodes 2 are located on opposite sides of the storage bottle.

[0068] In one preferred embodiment, the number of liquid level detection electrodes 2 is twice the number of reference electrodes 3. There are two reference electrodes 3, located on opposite sides of the liquid storage bottle 1. There are also two liquid level detection electrodes 2, also located on opposite sides of the liquid storage bottle 1.

[0069] In one preferred embodiment, two liquid level detection electrodes 2 are provided, located on opposite sides of the liquid storage bottle 1, and two reference electrodes 3 are also provided, also located on opposite sides of the liquid storage bottle 1. By providing two liquid level detection electrodes 2 and two reference electrodes 3, the accuracy of data acquisition is improved. The heights of the liquid level detection electrodes 2 and the reference electrodes 3 are positive integer multiples of each other, thus enabling accurate determination of the liquid level height based on the proportional relationship between the liquid level detection electrodes 2 and the reference electrodes 3.

[0070] In the circumferential direction of the liquid storage bottle 1, the two liquid level detection electrodes 2 correspond one-to-one with the two reference electrodes 3 and are aligned in position. The two liquid level detection electrodes 2 and the two reference electrodes 3 are all rectangles extending along the liquid level height direction.

[0071] Reference Figure 3 As shown, in another embodiment, in the circumferential direction of the liquid storage bottle 1, the two liquid level detection electrodes 2 are respectively misaligned with the two reference electrodes 3.

[0072] In the direction of liquid level height, the length of the liquid level detection electrode 2 is a positive integer multiple of the length of the reference electrode 3; in a preferred embodiment, the length of the liquid level detection electrode 2 is twice the length of the reference electrode 3.

[0073] In the circumferential direction of the liquid storage bottle, the width of the reference electrode 3 is a positive integer multiple of the width of the liquid level detection electrode 2; in a preferred embodiment, the width of the liquid level detection electrode 2 is 1 times the width of the reference electrode 3.

[0074] The width of one liquid level detection electrode 2 is a positive integer multiple of the width of the other liquid level detection electrode 2; the width of one reference electrode 3 is a positive integer multiple of the width of the other reference electrode 3. In a preferred embodiment, the width of one liquid level detection electrode 2 is 1 times the width of the other liquid level detection electrode 2, and the widths of the two liquid level detection electrodes 2 are equal; the width of one reference electrode 3 is 1 times the width of the other reference electrode 3, and the widths of the two reference electrodes 3 are equal.

[0075] The method for detecting liquid level includes the following steps:

[0076] S1, pre-installed reference electrode 3 and liquid level detection electrode 2.

[0077] S2. The linear relationship between the preset frequency change ratio and the liquid level height is Cc = H * K; Cc is the frequency change ratio; H is the liquid level height; K is the coefficient; in this embodiment, the coefficient K is a preset value.

[0078] S3. Collect the frequency change Cex of the current reference electrode 3.

[0079] S4. Collect the frequency change Cey of the current liquid level detection electrode 2.

[0080] S5. Determine the ratio of the current frequency change Cc using Cc = Cey / Cex, and then determine the corresponding liquid level height using the ratio of the current frequency change Cc.

[0081] The above method works as follows: when the liquid level in the storage bottle 1 changes, the frequency change of the reference electrode 3 and the frequency change of the liquid level detection electrode 2 also change, and consequently, the frequency change ratio between the reference electrode 3 and the liquid level detection electrode 2 also changes. The frequency change ratio is the largest when the storage bottle 1 is full, and gradually decreases as the liquid level decreases. The frequency change ratio reflects the change in liquid level. Furthermore, since the electrodes detect different liquids at different frequencies, the liquid level is determined by the frequency change. This method is suitable for detecting different liquid levels.

[0082] In the above method, S3 involves acquiring the frequency change Cex of the current reference electrode 3, specifically including the following steps:

[0083] S3.1. Preset the no-load frequency Cea of ​​the reference electrode. The no-load frequency Cea of ​​the reference electrode is the frequency corresponding to the liquid storage bottle 1 when it is unloaded.

[0084] S3.2 Obtain the current frequency Ceb of the reference electrode. Specifically, obtain the frequencies of the two reference electrodes respectively, then calculate the average frequency of the two reference electrodes, and set the average frequency of the reference electrodes as the current frequency Ceb of the reference electrodes.

[0085] In this embodiment, the frequency Ce1 of one reference electrode is first obtained; then the frequency Ce2 ​​of another reference electrode is obtained; the average frequency of the two reference electrodes is calculated by (Ce1+Ce2) / 2; then the average frequency of the two reference electrodes is set as the current frequency Ceb of the reference electrode; the frequency obtained in this way has good accuracy.

[0086] S3.3 Determine the frequency change Cex of the current reference electrode 3 by subtracting the no-load frequency Cea of ​​the reference electrode from the current frequency Ceb of the reference electrode; Ceb-Cea=Cex.

[0087] In the above method, the frequency change Cey of the current liquid level detection electrode 2 is collected in S4, specifically including the following steps:

[0088] S4.1. Preset the no-load frequency Cec of the liquid level detection electrode 2. The no-load frequency Cec of the liquid level detection electrode 2 is the frequency corresponding to the liquid storage bottle 1 when it is unloaded.

[0089] S4.2 Obtain the current frequency Ced of the liquid level detection electrode 2. Specifically, obtain the frequencies of the two liquid level detection electrodes 2 respectively, then calculate the average frequency of the two liquid level detection electrodes 2, and set the average frequency of the liquid level detection electrodes 2 as the current frequency Ced of the liquid level detection electrode 2.

[0090] In this embodiment, the frequency Ce3 of one liquid level detection electrode 2 is first obtained; then the frequency Ce4 of the other liquid level detection electrode 2 is obtained; the average frequency of the two liquid level detection electrodes 2 is calculated by (Ce3+Ce4) / 2; then the average frequency of the two liquid level detection electrodes 2 is set as the current frequency Ced of the liquid level detection electrode 2; the frequency obtained in this way has good accuracy.

[0091] S4.3. Determine the current frequency change Cey of the liquid level detection electrode 2 by subtracting the no-load frequency Cec of the liquid level detection electrode 2 from the current frequency Ced of the liquid level detection electrode 2; Ced-Cec=Cey.

[0092] The following data will be used to illustrate this.

[0093] Table 1 shows the data on the liquid level height corresponding to the frequency change ratio of liquid M1.

[0094]

[0095] Table 1

[0096] Taking Table 1 as an example, as the liquid level decreases, the ratio of frequency changes will gradually decrease.

[0097] Table 2 shows the data on the liquid level height corresponding to the frequency change ratio of liquid M2.

[0098]

[0099] Table 2

[0100] Taking Table 2 as an example, as the liquid level decreases, the ratio of frequency changes will gradually decrease.

[0101] Table 3 shows the data on the liquid level height corresponding to the frequency change ratio of liquid M3.

[0102]

[0103]

[0104] Table 3

[0105] Taking Table 3 as an example, as the liquid level decreases, the ratio of frequency changes will gradually decrease.

[0106] Refer to Tables 1, 2, and 3. Figure 8 and Figure 9 As shown, the frequency change ratios of the liquid level detection electrodes 2 are inconsistent for different types of liquids; this invention determines the liquid level height by the frequency change ratio, and is applicable to the detection of different liquid levels.

[0107] The second implementation method: as follows Figure 5 As shown, the device includes a housing 6, an atomizing device 5, and a liquid storage bottle 1 connected to the atomizing device 5. The atomizing device 5 is connected to the housing 6, and the housing 6 has a receiving cavity 61, in which the liquid storage bottle 1 is fixedly disposed. The control module 4 is disposed inside the housing 6 and is spaced 0.1mm-20mm from the outer wall of the liquid storage bottle 1, preferably 1mm-5mm apart. The liquid level detection electrode 2 and the reference electrode 3 are disposed on the inner wall of the receiving cavity 61 of the housing 6. In this embodiment, the liquid level detection electrode 2 and the reference electrode 3 are connected to the control module 4 through leads to achieve signal transmission. The remaining structure is the same as in Embodiment 1.

[0108] The third implementation method: such as Figure 6As shown, the device includes a housing 6, an atomizing device 5, and a storage bottle 1 connected to the atomizing device 5. The atomizing device 5 is connected to the housing 6, and the housing 6 has a receiving cavity 61. The storage bottle 1 is located inside the receiving cavity 61. The storage bottle 1 is detachably disposed in the receiving cavity 61. The control module 4 is disposed inside the housing 6. The reference electrode 3 and the liquid level detection electrode are disposed on the outer wall of the storage bottle 1. The outer wall of the storage bottle 1 is also provided with contacts 7 that are electrically connected to the liquid level detection electrode 2 and the reference electrode 3. The inner wall of the receiving cavity 61 is provided with contacts 7 that are electrically connected to the control module 4. When the storage bottle 1 is placed in the receiving cavity 61, the contacts 7 on the storage bottle 1 contact with the contacts 7 on the inner wall of the receiving cavity 61. Through the contact 7 on the storage bottle 1 and the contacts 7 on the inner wall of the receiving cavity 61, the liquid level detection electrode 2, the reference electrode 3, and the control module 4 are connected by signal. The remaining structure is the same as in Embodiment 1.

[0109] The fourth implementation method: such as Figure 7 As shown, it includes a housing 6, an atomizing device 5, and a liquid storage bottle 1 connected to the atomizing device 5. The atomizing device 5 is connected to the housing 6. The housing 6 is provided with a receiving cavity 61. The liquid storage bottle 1 is located in the receiving cavity 61 and is detachably disposed in the receiving cavity 61.

[0110] The housing 6 contains a main control circuit board 62 and a receiving cavity 61. The liquid storage bottle 1 is located in the receiving cavity 61. The aroma diffuser also includes a liquid level detection circuit board 8, which is mounted on the outer wall of the liquid storage bottle 1. The liquid level detection electrode 2 and the reference electrode 3 are connected to the liquid level detection circuit board 8 and are located on the inner side of the liquid level detection circuit board 8 facing the liquid storage bottle 1. The control module is also mounted on the liquid level detection circuit board 8 and is electrically connected to the main control circuit board 62.

[0111] The liquid level detection electrode 2 and the reference electrode 3 are formed on the inner side of the liquid level detection circuit board 8 by etching. A metal shielding layer is formed on the outer side of the liquid level detection circuit board 8 facing away from the liquid storage bottle 1; the rest of the structure is the same as in Embodiment 1.

[0112] Fifth implementation method: such as Figure 10-12As shown, the fragrance device also includes a housing 6, with an atomizing device 5 connected to the housing 6. A receiving cavity 61 is provided on the housing 6, and a liquid storage bottle is located within the receiving cavity 61. A liquid level detection electrode 2 and a reference electrode 3 are installed on the inner wall of the receiving cavity 61, with a distance of 0.1mm-20mm between the liquid level detection electrode 2, the reference electrode 3, and the outer wall of the liquid storage bottle. Two grooves 63 extending along the height direction are formed on the outer wall of the receiving cavity 61. A liquid level detection electrode 2 and a reference electrode 3 are installed in each of the two grooves 63. Both the liquid level detection electrode 2 and the reference electrode 3 are thin sheets, attached to the grooves 63 at intervals. The liquid level detection electrodes 2 and the reference electrodes 3 are arranged in at least two groups. Each group of electrodes includes a reference electrode 3 located at the bottom and 2-4 liquid level detection electrodes 2. The reference electrode 3 and the 2-4 liquid level detection electrodes 2 are arranged in a straight line along the height direction and are spaced apart. The number of liquid level detection electrodes 2 in each group of electrodes is the same and they are arranged at equal heights (or as shown in the figure). Figure 13-15 (To understand). In this embodiment, an outer shell can also be provided outside the housing 6 to enclose the liquid level detection electrode 2.

[0113] Sixth implementation method: such as Figure 13 As shown, the device includes an absorbent cotton core 12 and an atomizing device including a vibrating atomizing plate 51. One end of the absorbent cotton core 12 is inserted into the liquid storage bottle 1, and the other end abuts against the vibrating atomizing plate 51, transferring the liquid in the liquid storage bottle 1 to the vibrating atomizing plate 51. The vibration of the vibrating atomizing plate 51 atomizes the liquid delivered to it. The atomizing device in this embodiment uses ultrasonic atomization. The settings of the liquid level detection electrode 2 and the reference electrode 3 can be the same as in any other embodiment.

[0114] The seventh embodiment includes an air pump 9 and a siphon tube 11. The air pump 9 is connected to the atomizing device 5 via a pipeline, providing airflow to the atomizing device 5. The atomizing device 5 is connected to the liquid storage bottle 1 via the siphon tube 11, mixing and atomizing the liquid in the liquid storage bottle 1 with the airflow provided by the air pump 9. The aroma diffuser includes an outer shell 601 and an inner shell 602. The inner shell 602 is installed inside the outer shell 601. The atomizing device is installed inside either the outer shell 601 or the inner shell 602. A receiving cavity 61 is provided inside the inner shell 602. The liquid storage bottle 1 is located inside the receiving cavity 61. The liquid level detection electrode 2 and the reference electrode 3 are installed on the outer wall of the receiving cavity 61. The liquid level detection electrode 2 and the reference electrode 3 are arranged in at least two groups. Each group of electrodes includes a reference electrode 3 located at the bottom and 2-4 liquid level detection electrodes 2. The reference electrode 3 and the 2-4 liquid level detection electrodes 2 are arranged in a straight line along the height direction and are spaced apart. The number of liquid level detection electrodes 2 in each group of electrodes is the same and they are arranged at the same height in a one-to-one correspondence.

[0115] In this embodiment, two grooves 63 extending along the height direction are formed on the outer wall of the receiving cavity. A liquid level detection electrode 2 and a reference electrode 3 are installed in each of the two grooves 63. Both the liquid level detection electrode 2 and the reference electrode 3 are thin sheets, spaced apart and attached to the grooves 63 (reference). Figure 11-13 (To understand).

[0116] Eighth implementation method: Method for detecting the liquid level height of the diffuser in Examples 5 to 7. In the diffuser in Examples 5 to 7, the liquid level detection electrode and the reference electrode are arranged in at least one group. Each group of electrodes includes a reference electrode located at the bottom and 2-4 liquid level detection electrodes. The reference electrode and the 2-4 liquid level detection electrodes are arranged in a straight line along the height direction and are spaced apart to avoid mutual interference between the electrodes.

[0117] The method for detecting liquid level includes the following steps:

[0118] S1. Preset linear relationship data between the frequency change ratio and the liquid level height: Cc = H * K; Cc is the frequency change ratio; H is the liquid level height; K is the coefficient; in this embodiment, the coefficient K is a preset value.

[0119] S2. Collect the current frequency change Cex of the reference electrode 3, and the frequency change Cey of the current liquid level detection electrode. Determine the ratio Cc of the current frequency changes using Cc = Cey / Cex, and determine the corresponding liquid level height H using the ratio Cc. Calculate the liquid level height H using the formula H = 1 / K * Cey / Cex. In one embodiment, if the current liquid level detection electrode is the highest liquid level detection electrode, a full bottle signal is issued, and the liquid level height H does not need to be calculated.

[0120] An electrode for detecting the current liquid level that meets the following conditions is a liquid level detection electrode for detecting the current liquid level:

[0121] (1) When the frequency change Cey of the undetermined liquid level detection electrode is greater than the preset value and is the highest liquid level detection electrode, the liquid level detection electrode is regarded as the liquid level detection electrode of the current liquid level.

[0122] For reference Figure 11 The coefficient K is preset to 0. The liquid level detection electrodes 2 include a first liquid level detection electrode 2a and a second liquid level detection electrode 2b. The second liquid level detection electrode 2b is relatively closer to the bottle opening, so it is the highest liquid level detection electrode. When the frequency change of the second liquid level detection electrode 2b is greater than 0, the bottle is full, and the second liquid level detection electrode 2b is the liquid level detection electrode for the current liquid level.

[0123] (2) When the frequency change Cey of the undetermined liquid level detection electrode is greater than the preset value, and the frequency change Cey of the liquid level detection electrode at the next higher position is less than or equal to the preset value, the liquid level detection electrode 2 is regarded as the liquid level detection electrode of the current liquid level.

[0124] refer to Figure 13 When the coefficient K is preset to 0, a first liquid level detection electrode 2a, a second liquid level detection electrode 2b, and a third liquid level detection electrode 2c are sequentially arranged from the bottom of the bottle to the top. When the frequency change of the third liquid level detection electrode 2c is ≤0, it indicates that the bottle is not full. The frequency change of the second liquid level detection electrode 2b is then detected. When the frequency change of the second liquid level detection electrode 2b is >0, the second liquid level detection electrode 2b becomes the liquid level detection electrode for the current liquid level.

[0125] You can also refer to Figure 11 When the frequency change of the second liquid level detection electrode 2b is ≤0 and the frequency change of the first liquid level detection electrode 2a is >0, the first liquid level detection electrode 2a is the liquid level detection electrode for the current liquid level.

[0126] The frequency change Cey of the current liquid level detection electrode satisfies the following condition: Cey = Ced - Cec, where Ced is the current frequency of the current liquid level detection electrode and Cec is the no-load frequency of the current liquid level detection electrode.

[0127] For example when Figure 11 When the first liquid level detection electrode 2a is the liquid level detection electrode for the current liquid level, the frequency of the first liquid level detection electrode 2a is Ced.

[0128] If the liquid level detection electrodes and reference electrodes are arranged in at least two groups, there are at least two liquid level detection electrodes for the current liquid level, and Ced is the average of the current frequencies of multiple liquid level detection electrodes for the current liquid level. For example, when the first liquid level detection electrode 2a is the liquid level detection electrode for the current liquid level, the average of the current frequencies of multiple first liquid level detection electrodes 2a is taken as Ced.

[0129] The frequency change Cex of the current reference electrode 3 satisfies the following condition: Cex = Ceb - Cea, where Ceb is the current frequency of the reference electrode and Cea is the no-load frequency of the reference electrode.

[0130] If the level detection electrode and the reference electrode are arranged in at least two groups, and there are at least two reference electrodes, Ceb takes the average of the current frequencies of multiple reference electrodes.

[0131] In embodiments where the liquid level detection electrodes and reference electrodes are arranged in at least two groups, each group has the same number of liquid level detection electrodes, which are arranged at the same height in a one-to-one correspondence, and multiple reference electrodes are arranged at the same height. For example... Figure 13 Understanding: the left group has two liquid level detection electrodes, and the right group also has two liquid level detection electrodes. The two first liquid level detection electrodes 2a on the left and right are at the same height, and the two reference electrodes 3 on the left and right are at the same height. In this embodiment, left and right refer to... Figure 13 Let's take a look.

[0132] Ninth implementation method: such as Figure 10-14 As shown, in this embodiment, the number of liquid level detection electrodes is twice the number of reference electrodes 3. Two reference electrodes 3 are provided, located on opposite sides of the storage bottle 1; four liquid level detection electrodes are provided, also located on opposite sides of the storage bottle 1. The two reference electrodes and each pair of liquid level detection electrodes 3 are distributed along the liquid level height direction. The structure of this embodiment can be referred to... Figure 10-14 Any structure.

[0133] The liquid level detection electrodes are a first liquid level detection electrode 2a and a second liquid level detection electrode 2b; one end of each of the two reference electrodes 3 is flush with the bottom of the storage bottle 1, and the other end of each of the two second liquid level detection electrodes 2b is flush with the top of the liquid when the storage bottle 1 is full; the two first liquid level detection electrodes 2a are located between the reference electrodes and the second liquid level detection electrodes 2b. The rest of the structure is the same as in Embodiment 1.

[0134] In this embodiment, when detecting the liquid level height, the current liquid level height is determined by the frequency change of the first liquid level detection electrode 2a or the second liquid level detection electrode 2b and the frequency change of the reference electrode 3.

[0135] In this embodiment, at least two methods for detecting liquid level are included. The first method for detecting liquid level includes the following steps:

[0136] S1, pre-installed reference electrode 3, first liquid level detection electrode 2a, and second liquid level detection electrode 2b.

[0137] S2. The linear relationship between the preset frequency change ratio and the liquid level height is Cc = H * K; Cc is the frequency change ratio; H is the liquid level height; K is the coefficient; in this embodiment, the coefficient K is a preset value.

[0138] S3. Collect the frequency change Cex of the current reference electrode 3.

[0139] S4. Collect the frequency change Cey of the second liquid level detection electrode 2b; if the frequency change of the second liquid level detection electrode 2b is >0, then determine that the current liquid level has reached the full height of the bottle; if the frequency change of the second liquid level detection electrode 2b is ≤0, then proceed to S5.

[0140] S5. Collect the frequency change Cey of the first liquid level detection electrode 2a.

[0141] S6. Determine the current frequency change ratio Cc using Cc = Cey, / Cex, and then determine the corresponding liquid level height using the current frequency change ratio Cc.

[0142] The first method for detecting liquid level height uses the second liquid level detection electrode 2b to determine whether the liquid level height has reached the full bottle height; and determines the liquid level height below the full bottle height by the ratio between the frequency change of the first liquid level detection electrode 2a and the frequency change of the reference electrode 3.

[0143] In the above method, S3 involves acquiring the frequency change Cex of the current reference electrode 3, specifically including the following steps:

[0144] 1. Preset the no-load frequency Cea of ​​the reference electrode. The no-load frequency Cea of ​​the reference electrode is the frequency corresponding to the liquid storage bottle 1 when it is unloaded.

[0145] 2. Obtain the current frequency Ceb of the reference electrode. Specifically, obtain the frequencies of the two reference electrodes separately, then calculate the average frequency of the two reference electrodes, and set the average frequency of the reference electrodes as the current frequency Ceb of the reference electrodes.

[0146] In this embodiment, the frequency Ce1 of one reference electrode is first obtained; then the frequency Ce2 ​​of another reference electrode is obtained; the average frequency of the two reference electrodes is calculated by (Ce1+Ce2) / 2; then the average frequency of the two reference electrodes is set as the current frequency Ceb of the reference electrode; the frequency obtained in this way has good accuracy.

[0147] 3. Determine the frequency change Cex of the current reference electrode 3 by subtracting the no-load frequency Cea of ​​the reference electrode from the current frequency Ceb of the reference electrode; Ceb-Cea=Cex.

[0148] In the above method, the frequency change Cey of the second liquid level detection electrode 2b is collected in S4; specifically, it includes the following steps:

[0149] 1. The unloaded frequency Cec of the second liquid level detection electrode 2b is preset; the unloaded frequency Cec of the second liquid level detection electrode 2b is the frequency corresponding to the unloaded state of the storage bottle 1.

[0150] 2. Obtain the current frequency Ced of the second liquid level detection electrode 2b. Specifically, obtain the frequencies of the two second liquid level detection electrodes 2b respectively, then calculate the average frequency of the two second liquid level detection electrodes 2b, and set the average frequency of the second liquid level detection electrodes 2b as the current frequency Ced of the second liquid level detection electrode 2b.

[0151] In this embodiment, the frequency Ce3 of one second liquid level detection electrode 2b is first obtained; then the frequency Ce4 of another second liquid level detection electrode 2b is obtained; the average frequency of the two second liquid level detection electrodes 2b is calculated by (Ce3, + Ce4,) / 2; then the average frequency of the two second liquid level detection electrodes 2b is set as the current frequency Ced of the second liquid level detection electrode 2b; the frequency obtained in this way has good accuracy.

[0152] 3. By subtracting the no-load frequency Cec from the current frequency Ced of the second liquid level detection electrode 2b, determine the current frequency change Cey of the second liquid level detection electrode 2b; Ced - Cec = Cey.

[0153] 4. If the frequency change of the second liquid level detection electrode 2b is greater than 0, it indicates that the current liquid level is greater than the lower end height of the second liquid level detection electrode 2b, thus determining that the current liquid level has reached the full bottle height. If the frequency change of the second liquid level detection electrode 2b is less than or equal to 0, it indicates that the current liquid level is less than or equal to the lower end height of the second liquid level detection electrode 2b, thus determining that the current liquid level has not reached the full bottle height.

[0154] In the above method, S5 involves collecting the frequency change Cey of the first liquid level detection electrode 2a; specifically, it includes the following steps:

[0155] 1. The unloaded frequency Cec, of the first liquid level detection electrode 2a is preset; the unloaded frequency Cec, of the first liquid level detection electrode 2a is the frequency corresponding to the unloaded state of the storage bottle 1.

[0156] 2. Obtain the current frequency Ced of the first liquid level detection electrode 2a. Specifically, obtain the frequencies of the two first liquid level detection electrodes 2a respectively, then calculate the average frequency of the two first liquid level detection electrodes 2a, and set the average frequency of the first liquid level detection electrode 2a as the current frequency Ced of the first liquid level detection electrode 2a.

[0157] In this embodiment, the frequency Ce3 of one first liquid level detection electrode 2a is first obtained; then the frequency Ce4 of another first liquid level detection electrode 2a is obtained; the average frequency of the two first liquid level detection electrodes 2a is calculated by (Ce3, + Ce4,) / 2; then the average frequency of the two first liquid level detection electrodes 2a is set as the current frequency Ced of the first liquid level detection electrode 2a; the frequency obtained in this way has good accuracy.

[0158] 3. By subtracting the no-load frequency Cec from the current frequency Ced of the first liquid level detection electrode 2a, the frequency change Cey of the first liquid level detection electrode 2a is determined; Ced - Cec = Cey.

[0159] The second method for detecting liquid level includes the following steps:

[0160] S1, pre-installed reference electrode 3, first liquid level detection electrode 2a, and second liquid level detection electrode 2b.

[0161] S2. The linear relationship between the preset frequency change ratio and the liquid level height is Cc = H * K; Cc is the frequency change ratio; H is the liquid level height; K is the coefficient; in this embodiment, the coefficient K is a preset value.

[0162] S3. Collect the frequency change Cex of the current reference electrode 3.

[0163] S4. Collect the frequency change Cey of the second liquid level detection electrode 2b and the frequency change Cey of the first liquid level detection electrode 2a.

[0164] S5. Determine the frequency change of the liquid level detection electrode at different heights.

[0165] If the frequency change of the liquid level detection electrode with the lowest height position is >0, and the frequency change of the other liquid level detection electrodes is ≤0, then the ratio of the current frequency change Cc is calculated using the liquid level detection electrode with the lowest height position and the reference electrode 3; that is, if the frequency change of the first liquid level detection electrode 2a is >0, and the frequency change of the second liquid level detection electrode 2b is ≤0, then proceed to S6.

[0166] If the frequency change of the liquid level detection electrodes at different heights is >0, then the ratio of the current frequency change Cc is calculated using the liquid level detection electrode with a frequency change >0 and the highest height position and the reference electrode 3; that is, if the frequency change of the first liquid level detection electrode 2a and the second liquid level detection electrode 2b is both >0, then the frequency change of the second liquid level detection electrode 2b is used for calculation, and then S7 is performed.

[0167] S6. Determine the ratio of the current frequency change Cc using Cc = Cey, / Cex, and then determine the corresponding liquid level height using the ratio of the current frequency change Cc.

[0168] S7. Determine the ratio of the current frequency change Cc using Cc = Cey / Cex, and then determine the corresponding liquid level height using the ratio of the current frequency change Cc.

[0169] In the above method, in S5, if the frequency change of the liquid level detection electrode with the lowest height position is >0 and the frequency change of the other liquid level detection electrodes is ≤0, it means that the current liquid level corresponds to the height of the liquid level detection electrode with the lowest height position. The ratio of the current frequency change Cc is calculated using the liquid level detection electrode with the lowest height position and the reference electrode 3.

[0170] In S5, if the frequency change of liquid level detection electrodes at different heights is >0, it means that the liquid level has submerged multiple liquid level detection electrodes. The frequency change ratio Cc is calculated using the liquid level detection electrode with the highest height among the multiple liquid level detection electrodes with frequency change >0.

[0171] The second method for detecting liquid level height involves comparing the liquid level using multiple level detection electrodes at different heights, thus ensuring a more accurate determination of the liquid level height.

[0172] This invention also provides a specific implementation of a control method for a fragrance diffuser, comprising the following steps: S1, the fragrance diffuser stores the user's historical preference data and / or receives physiological data sent by the user's wearable device, and sends the historical preference data and / or the physiological data to a server; S2, the server determines whether it receives only one of the historical preference data or the physiological data, or both. If it receives only one of the historical preference data or the physiological data, it generates a recommended fragrance type and / or dynamic adjustment instruction based on the received historical preference data or the physiological data, and sends the recommended fragrance type and / or dynamic adjustment instruction to the user terminal. If it receives both the historical preference data and the physiological data, it generates a recommended fragrance type and / or dynamic adjustment instruction based on the physiological data, and sends the recommended fragrance type and / or dynamic adjustment instruction to the user terminal. This demonstrates that the fragrance diffuser prioritizes generating a control method based on the user's physiological data. The corresponding instructions can improve processing efficiency, or generate recommended fragrance types and / or dynamic control instructions based on historical preference data and physiological data respectively, and send them to the user terminal for selection. Here, both types of instructions are sent to the user for selection, further improving the user experience; S3, if the user confirms the recommended fragrance type and / or dynamic control instructions generated in step S2 on the user terminal, the server sends the user's confirmation to the diffuser, and proceeds to step S4; if the user does not confirm the recommended fragrance type and / or dynamic control instructions generated in step S2 on the user terminal, proceeds to step S5; S4, the diffuser atomizes and diffuses the fragrance liquid according to the received recommended fragrance type and / or dynamic control instructions; S5, the diffuser continues to atomize and diffuse the fragrance liquid according to the current spraying plan; or the diffuser automatically adjusts the spraying plan according to the current environment and then atomizes and diffuses the fragrance liquid.

[0173] In a preferred embodiment, in step S1, the diffuser further collects environmental data of the surrounding environment and sends the environmental data to the server; in step S2, the server generates a recommended fragrance and / or dynamic control instruction based on the received environmental data, but does not need to send the recommended fragrance and / or dynamic control instruction to the user terminal; in step S3, the server determines whether the user has confirmed the recommended fragrance and / or dynamic control instruction based on historical preference data or physiological data on the user terminal. If yes, proceed to step 4; otherwise, proceed to step S5; in step S5, the diffuser atomizes and diffuses the fragrance liquid according to the recommended fragrance and / or dynamic control instruction based on the environmental data. Personalized recommendations to users enhance the user experience.

[0174] In a preferred embodiment, in step S1, the fragrance diffuser also detects the actual liquid level data of the fragrance liquid in real time and sends the actual liquid level data to the server; between step S1 and step S2, the server first compares the received actual liquid level data with a preset liquid level threshold; when the actual liquid level data is greater than the preset liquid level threshold, it proceeds to step S2; when the actual liquid level data is less than or equal to the preset liquid level threshold, the server generates a dynamic control command based solely on the actual liquid level data of the fragrance liquid and sends it to the fragrance diffuser. At the same time, the server sends the remaining usage time of the fragrance liquid and the purchase link of the fragrance liquid to the user terminal, and then proceeds to step S6; in step S6, the fragrance diffuser atomizes and diffuses the fragrance liquid according to the dynamic control command generated based on the actual liquid level data.

[0175] In a preferred embodiment, in step S2, the server further aggregates historical preference data of all users within the region, generates common data, and combines it with environmental data to generate recommended fragrances and / or dynamic adjustment instructions. The server then sends the recommended fragrances and / or dynamic adjustment instructions generated based on the common data and environmental data to the user terminal for selection. Specifically, in this embodiment, environmental data is mainly used to provide temperature and humidity information to assist the server in obtaining suitable recommended fragrances and / or dynamic adjustment instructions from the common data, thereby improving the user experience.

[0176] The aroma diffuser and its control method described in this invention can generate a suitable spraying strategy, i.e., fragrance type and / or dynamic adjustment instructions, based on the user's historical preference data or physiological data, and recommend it to the user. The user confirms whether to adopt the spraying strategy on the user terminal. After the user confirms the adoption of the spraying strategy, the atomizing device is controlled to execute the spraying strategy to improve the user experience.

[0177] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0178] In the description of this specification, the references to terms such as "preferred embodiment," "another embodiment," "other embodiment," or "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0179] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A fragrance diffuser, characterized in that: Includes atomizing device and control module; The control module stores the user's historical preference data and / or receives physiological data sent by the wearable device worn by the user, and sends the historical preference data and / or the physiological data to the server through the data transmission module. The server generates a recommended fragrance and / or dynamic adjustment instruction based on the received historical preference data and / or physiological data, and sends the generated recommended fragrance and / or dynamic adjustment instruction to the user terminal. Subsequently, the recommended fragrance and / or dynamic adjustment instruction confirmed by the user on the user terminal is sent to the control module through the data transmission module. The atomizing device is used to execute adjustment instructions formed by the control module based on the recommended fragrance and / or dynamic control instructions it receives, and to atomize and diffuse the fragrance liquid.

2. The aroma diffuser according to claim 1, characterized in that: The historical preference data includes one or more of the following: the frequency of the user's use of the diffuser, the fragrance type of the perfume liquid, and the time period of use; Alternatively, the physiological data may include physiological state, exercise state, sleep data, or emotional state.

3. The aroma diffuser according to claim 1, characterized in that: The aroma diffuser also includes a data acquisition module; the data acquisition module is used to collect environmental data, including temperature and humidity data, and send the environmental data to the server through a data transmission module. The server generates dynamic control instructions based on the received environmental data and sends the dynamic control instructions to the control module.

4. The aroma diffuser according to claim 3, characterized in that: The server aggregates historical preference data of all users within the region, combines it with environmental data to generate recommended fragrances and / or dynamic adjustment instructions, and sends the generated recommended fragrances and / or dynamic adjustment instructions to the user terminal.

5. The aroma diffuser according to claim 4, characterized in that: The server uses a clustering algorithm to group the historical preference data of all users in the aggregated area according to their usage habits, extracts the recommended fragrance and / or dynamic control instructions corresponding to each group, and, combined with the current environmental data, sends the most frequently used scheme in the same group to the user terminal.

6. The aroma diffuser according to claim 1, characterized in that: The fragrance diffuser also includes a liquid level detection device, which is used to detect the actual liquid level data of the fragrance liquid in real time and send the actual liquid level data to the server through a data transmission module. The server compares the received actual liquid level data with a preset liquid level threshold. When the actual liquid level data is greater than the preset liquid level threshold, the server generates a dynamic control command based solely on environmental data. When the actual liquid level data is less than or equal to the preset liquid level threshold, the server generates a dynamic control command based solely on the actual liquid level data of the fragrance liquid and simultaneously sends the remaining usage time of the fragrance liquid and the purchase link of the fragrance liquid to the user terminal.

7. The aroma diffuser according to claim 6, characterized in that: The aroma diffuser also includes a liquid storage bottle connected to the atomizing device. The liquid storage bottle is made of insulating material. The liquid level detection device includes a liquid level detection electrode, a reference electrode, and a control module electrically connected to the liquid level detection electrode and the reference electrode. The liquid level detection electrode and the reference electrode are disposed on the outer wall of the liquid storage bottle or located outside the liquid storage bottle and spaced apart from the outer wall of the liquid storage bottle. The liquid level detection electrode extends along the liquid level height direction. At least one reference electrode is provided and is adjacent to the bottom of the liquid storage bottle. The control module calculates the liquid level height in the liquid storage bottle based on the detection signals of the liquid level detection electrode and the reference electrode.

8. The aroma diffuser according to claim 7, characterized in that: The aroma diffuser also includes a housing, with the atomizing device connected to the housing. The housing has a receiving cavity, and the liquid storage bottle is located within the receiving cavity. The liquid level detection electrode and reference electrode are mounted on the inner wall of the receiving cavity. The control module is located within the housing and spaced 0.1mm-20mm from the outer wall of the liquid storage bottle, preferably 1mm-5mm. Alternatively, the liquid storage bottle is detachable from the receiving cavity. The liquid level detection electrode and reference electrode are mounted on the outer wall of the liquid storage bottle, and the control module is located within the housing. The outer wall of the liquid storage bottle also has contacts electrically connected to the liquid level detection electrode and reference electrode. The inner wall of the receiving cavity has contacts electrically connected to the control module. When the liquid storage bottle is placed inside the receiving cavity, the contacts on the liquid storage bottle contact the contacts on the inner wall of the receiving cavity. Alternatively, the aroma diffuser may further include a housing, with the atomizing device connected to the housing. A main control circuit board is disposed inside the housing, and a receiving cavity is provided on the housing. The liquid storage bottle is located within the receiving cavity. The aroma diffuser may also include a liquid level detection circuit board, which is mounted on the outer wall of the liquid storage bottle. A liquid level detection electrode and a reference electrode are connected to the liquid level detection circuit board, and the liquid level detection electrode and the reference electrode are located on the inner side of the liquid level detection circuit board facing the liquid storage bottle. The control module is also mounted on the liquid level detection circuit board, and the liquid level detection circuit board is electrically connected to the main control circuit board.

9. A control method for a fragrance diffuser, characterized in that, Includes the following steps: S1. The aroma diffuser stores the user's historical preference data and / or receives physiological data sent by the user's wearable device, and sends the historical preference data and / or the physiological data to the server; S2. The server determines whether it has received only one of the historical preference data or the physiological data, or both. If it has received only one of the historical preference data or the physiological data, it generates a recommended fragrance and / or dynamic adjustment instruction based on the received historical preference data or the physiological data, and sends the recommended fragrance and / or dynamic adjustment instruction to the user terminal. If it has received both the historical preference data and the physiological data, it generates a recommended fragrance and / or dynamic adjustment instruction based on the physiological data, and sends the recommended fragrance and / or dynamic adjustment instruction to the user terminal. Alternatively, it generates a recommended fragrance and / or dynamic adjustment instruction based on the historical preference data and a recommended fragrance and / or dynamic adjustment instruction based on the physiological data, respectively, and sends them to the user terminal for selection. S3. If the user confirms the recommended fragrance and / or dynamic adjustment command generated in step S2 on the user terminal, the server will send the user's confirmation to the diffuser and proceed to step S4; if the user does not confirm the recommended fragrance and / or dynamic adjustment command generated in step S2 on the user terminal, proceed to step S5. S4. The fragrance diffuser atomizes and diffuses the fragrance liquid according to the received recommended fragrance type and / or dynamic control instructions; S5. The fragrance diffuser continues to atomize and diffuse the fragrance liquid according to the current spraying plan; or the fragrance diffuser automatically adjusts the spraying plan according to the current environment and then atomizes and diffuses the fragrance liquid.

10. The control method for the aroma diffuser according to claim 9, characterized in that, In step S1, the fragrance diffuser also collects environmental data of the surrounding environment and sends the environmental data to the server; in step S2, the server also generates a recommended fragrance type and / or dynamic control instruction based on the received environmental data, but does not need to send the recommended fragrance type and / or dynamic control instruction based on the environmental data to the user terminal; in step S3, the server determines whether the user has confirmed the recommended fragrance type and / or dynamic control instruction based on historical preference data or the recommended fragrance type and / or dynamic control instruction based on physiological data on the user terminal. If yes, proceed to step 4; if no, proceed to step S5; in step S5, the fragrance diffuser atomizes and diffuses the fragrance liquid according to the recommended fragrance type and / or dynamic control instruction based on the environmental data. Alternatively, in step S1, the diffuser also detects the actual liquid level data of the fragrance liquid in real time and sends the actual liquid level data to the server; between step S1 and step S2, the server first compares the received actual liquid level data with a preset liquid level threshold; when the actual liquid level data is greater than the preset liquid level threshold, it proceeds to step S2; when the actual liquid level data is less than or equal to the preset liquid level threshold, the server generates a dynamic control command based solely on the actual liquid level data of the fragrance liquid and sends it to the diffuser. At the same time, the server sends the remaining usage time of the fragrance liquid and the purchase link of the fragrance liquid to the user terminal, and then proceeds to step S6; in step S6, the diffuser atomizes and diffuses the fragrance liquid according to the dynamic control command generated based on the actual liquid level data.

11. The control method for the aroma diffuser according to claim 10, characterized in that, In step S2, the server also aggregates the historical preference data of all users in the region, generates common data, and combines it with environmental data to generate recommended fragrances and / or dynamic adjustment instructions. The server then sends the recommended fragrances and / or dynamic adjustment instructions generated based on the common data and environmental data to the user terminal for selection.

Images