Control method of three-in-one faucet

Abstract

The invention provides a three-in-one faucet control method which comprises the following steps that S1, when a three-in-one faucet is in a standby state, if a first probe obtains a user signal, a controller starts preset time countdown, and within the time range of the preset time countdown, a second probe obtains the user signal, and if the user signal is obtained, the controller starts the preset time countdown; the controller controls the soap feeding module to output liquid soap; s2, when the three-in-one faucet is in a standby state, if a second probe obtains a user signal, the controller controls a water outlet module to output hand washing water flow; and S3, if the air control inductive probe obtains the user gesture signal, the controller controls the air outlet module to start working. A user can independently choose according to actual requirements, and when the user only needs to wash with clean water, the user stretches the hand below the second probe to enable the water outlet module to output hand washing water flow; when soap needs to be fed on the hand due to heavy oil dirt, the soap liquid is controlled to be output through the first probe and the second probe in sequence, and through the operation, extra washing water consumption caused by forced soap feeding in the prior art is avoided.

Description

Technical Field

[0001] This invention relates to the field of faucet technology, specifically to a control method for a three-in-one faucet. Background Technology

[0002] With increased public health awareness and the development of smart home technology, three-in-one sensor faucets integrating soap dispensing, water dispensing, and drying functions are widely used in public places such as hotels, hospitals, and office buildings, as well as in homes, because they avoid physical contact and reduce the risk of cross-infection. These faucets use multiple sensor modules to control corresponding functions, achieving contactless operation. They also offer advantages such as small footprint, easy assembly, and controllable cost, gradually becoming the mainstream product in the sensor-operated sanitary ware industry.

[0003] For example, Chinese patent document CN114934564B discloses a multifunctional intelligent handwashing device and its control method, which integrates soap dispensing, water dispensing, and drying functions. However, during use, once the user's hands enter the sensing area, the system will strictly follow the preset program (usually the sequence of "soap dispensing-water dispensing-drying") to forcibly trigger the full-function process, without giving the user the autonomy to choose the soap usage. This design leads to many problems in actual use: when the user only needs to perform simple hand rinsing (such as removing surface dust), the system will still automatically dispense soap, which not only causes ineffective waste of soap but also requires the user to add an extra step of rinsing off the soap, prolonging the operation time and wasting water resources. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to propose a three-in-one faucet control method to solve the problems mentioned in the background section above.

[0005] This invention is achieved through the following technical solution: A control method for a three-in-one faucet, the three-in-one faucet including a faucet body, a soap dispensing module, a water outlet module, and an air outlet module, and a control module respectively connected to the soap dispensing module, the water outlet module, and the air outlet module; the control module includes a controller, a first probe, a second probe, and a wind control sensor probe; the faucet body includes an operating surface and a working surface, the working surface having a soap outlet for the soap dispensing module, a water outlet for the water outlet module, an air outlet for the air outlet module, the second probe, and the wind control sensor probe; the operating surface has the first probe. Its control method includes the following steps: S1. When the three-in-one faucet is in standby mode, if the first probe acquires a user signal, the controller starts a preset time countdown. Within the time range of the preset time countdown, if the second probe acquires a user signal, the controller controls the soap dispensing module to output soap liquid. S2. When the three-in-one faucet is in standby mode, if the second probe acquires a user signal, the controller controls the water outlet module to output handwashing water flow. S3. If the wind control sensor detects a user's gesture signal, the controller controls the air outlet module to start working.

[0006] Furthermore, in step S1, the countdown timer for starting the program is set to within 7 seconds.

[0007] Furthermore, the control module also includes a light strip, which emits different light colors and effects to provide visual feedback to the user on the water temperature and air temperature when the three-in-one faucet is in standby mode, soap dispensing mode, air dispensing mode, fault mode, and water dispensing mode.

[0008] Furthermore, the control module also includes a display screen that can switch between standby mode and soap dispensing mode; In step S1, if the first probe acquires a user signal, the display screen shows the soap mode. If the second probe fails to acquire a user signal within the countdown time of the preset start time, the controller controls the display screen to automatically switch back to the standby state.

[0009] Furthermore, the display screen is used to display the fault modes of the three-in-one faucet; The fault mode includes selecting one or more icons to light up, including a low battery icon, a soap shortage icon, and a fan fault icon for the air outlet module.

[0010] Furthermore, the control method also includes: In step S1, when the second probe acquires a user signal and the controller controls the soap dispensing module to start working, the specific process is as follows: S11. First, control the water outlet module to output a fixed amount of water flow to achieve pre-wetting of the hands; S12. After the hands are pre-wetted, control the soap dispensing module to output a quantitative amount of soap solution; S13. After the soap liquid is dispensed, the controller starts timing and controls the water outlet module to output handwashing water after a set interval. S14. When the second probe detects that the user's hand is away from the water, the water outlet module is controlled to stop water outlet operation.

[0011] Furthermore, the control module also includes a distance sensor, and during the water discharge process, the control method further includes: The controller collects the detection data from the distance sensor in real time and stores a mapping table of hand distance and water flow rate. When the water outlet module is started, the distance sensor obtains the real-time distance between the user's hand and the working surface, and the controller determines the target water outlet flow rate by querying the mapping relationship table between the hand distance and the water outlet flow rate based on the real-time distance.

[0012] Furthermore, the control module also includes a temperature sensor, and when the water outlet module is activated, the control method further includes: The controller collects the detection data from the temperature sensor in real time and stores a mapping table between ambient temperature and outlet water temperature. When the water outlet module is started, the controller determines the target water outlet temperature by querying the mapping table based on the current ambient temperature.

[0013] Furthermore, when the water outlet module is activated, the control method further includes: The first probe adjusts the water outlet temperature of the water outlet module by capturing the user's temperature control switching signal.

[0014] Furthermore, the user temperature control switching signal includes an upward waving gesture, a downward waving gesture, and a left and right horizontal waving gesture; If the first probe detects an upward waving gesture, the controller controls the water outlet module to raise the water temperature to a set temperature, and the display screen simultaneously displays the current water temperature value; If the first probe detects a downward waving gesture, the controller controls the water outlet module to lower the water outlet temperature to a set temperature; If the first probe detects a left or right waving gesture, the controller controls the water outlet module to lock the current water temperature and stop temperature adjustment.

[0015] The beneficial effects of this invention are as follows: A control method for a three-in-one faucet, comprising the following steps: S1, when the three-in-one faucet is in standby mode, if the first probe acquires a user signal, the controller starts a preset time countdown. Within the preset time countdown period, if the second probe acquires a user signal, the controller controls the soap dispensing module to output soap solution; S2, when the three-in-one faucet is in standby mode, if the second probe acquires a user signal, the controller controls the water outlet module to output handwashing water flow; S3, if the wind control sensor acquires a user gesture signal, the controller controls the air outlet module to start working. In this invention, the user can choose according to actual needs. When the user only needs to rinse with water, they can directly place their hand under the second probe to directly start the water outlet module to output water, avoiding ineffective soap dispensing; when the hands are heavily soiled and require soap, the output of soap solution is controlled sequentially through the first and second probes. Through the above operation, the extra water consumption caused by forced soap dispensing in the prior art is avoided. Attached Figure Description

[0016] Figure 1 This is a flowchart of a control method for a three-in-one faucet according to the present invention.

[0017] Figure 2 This is a perspective view of a three-in-one faucet according to the present invention.

[0018] Figure 3 This is a perspective view of a three-in-one faucet according to the present invention.

[0019] The above figures include the following reference numerals: 1. Faucet body; 11. Operating surface; 12. Working surface; 13. Soap outlet; 14. Water outlet; 15. Air outlet; 2. Display screen; 3. First probe; 4. Second probe; 5. Air control sensor probe; 6. LED strip. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It should be noted that the description of these embodiments is for the purpose of aiding understanding the present invention, but does not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0021] Reference Figures 1 to 3 As shown, a control method for a three-in-one faucet is disclosed. The three-in-one faucet includes a faucet body 1, a soap dispenser module, a water outlet module, an air outlet module, and a control module. The control module is connected to the soap dispenser module, the water outlet module, and the air outlet module. The control module includes a controller, a first probe 3, a second probe 4, and a wind control sensor probe 5. The faucet body 1 includes an operating surface 11 and a working surface 12. The working surface 12 is provided with a soap outlet 13 for the soap dispenser module, a water outlet 14 for the water outlet module, an air outlet 15 for the air outlet module, the second probe 4, and the wind control sensor probe 5. The operating surface 11 is provided with the first probe 3. Its control method includes the following steps: S1. When the three-in-one faucet is in standby mode, if the first probe 3 obtains a user signal, the controller starts a preset time countdown. Within the time range of the preset time countdown, if the second probe 4 obtains a user signal, the controller controls the soap dispensing module to output soap liquid. S2. When the three-in-one faucet is in standby mode, if the second probe 4 acquires a user signal, the controller controls the water outlet module to output handwashing water flow. S3. If the wind control sensor 5 obtains a user gesture signal, the controller controls the air outlet module to start working.

[0022] This invention addresses the different hand cleaning needs in various scenarios: when hands are heavily soiled, soap and water are needed for deep cleaning; when hands are only slightly soiled, water is sufficient for basic cleaning, and subsequent rinsing with water is necessary to remove any residue. Users can choose whether to dispense soap according to their needs. When hands are heavily soiled, soap can be dispensed in step S1, followed by deep cleaning with water. When only a simple rinse with water is required, the water dispensing module can be activated in step S2 to directly dispense water, avoiding ineffective soap dispensing and the additional water consumption associated with forced soap application in existing technologies.

[0023] It should be noted that there is no fixed execution order between steps S1 and S3, nor is there any sequential dependency. Users can choose to trigger the operation mode corresponding to any step according to their actual needs. The corresponding functional modules can be started without following a specific process. The operation logic is flexible and adaptable to diverse usage scenarios.

[0024] Furthermore, by using the first probe 3 to switch working modes and then starting work through the second probe 4, the present invention eliminates the need to avoid accidental activation by increasing the distance between the soap outlet 13 and the water outlet 14, and also eliminates the need to tolerate the risk of accidental triggering by reducing the distance between the soap outlet 13 and the water outlet 14 in pursuit of a compact layout, which is conducive to achieving a miniaturized faucet design.

[0025] The first probe 3, the second probe 4, and the wind control sensor 5 include, but are not limited to, infrared sensors or millimeter-wave radar sensors from existing technologies, thereby achieving non-contact gesture recognition. The user signal in steps S1 and S2 is that the user's hand remains in each probe area for more than 0.3 seconds.

[0026] In step S1, the preset countdown time is set to within 7 seconds. This preset countdown time is adapted to the user's operational inertia, and 7 seconds can fully cover the time it takes for the user to move their hand to below the second probe 4 on the working surface 12 after completing the mode switch from the first probe 33.

[0027] If the second probe 4 fails to acquire a user signal within the time range of the preset countdown time, the controller controls the three-in-one faucet to return to standby mode. If the user puts their hand under the second probe 4 at this time, the soap dispensing module will not work, and the controller will control the water outlet module to output handwashing water.

[0028] The control module also includes a light strip 6, which emits different colors and light effects to provide visual feedback to the user on the water temperature and air temperature when the 3-in-1 faucet is in standby, soap dispensing, air dispensing, fault, and water dispensing states. A specific embodiment of the invention is provided below:

[0029] As an extended embodiment, the control module further includes a display screen 2, which can be switched between standby mode and soap dispensing mode; In step S1, if the first probe 3 acquires a user signal, the display screen 2 displays the standby mode. If the second probe 4 fails to acquire a user signal within the time range of the preset start time countdown, the controller controls the display screen 2 to automatically switch back to the standby mode.

[0030] Display screen 2 displays "standby mode, air supply mode or fault mode" in real time, thereby intuitively conveying the current function mode to the user and avoiding accidental triggering due to ambiguity in the mode status.

[0031] The fault mode includes selecting one or more icons to light up, including a low battery icon, a soap shortage icon, and a fan fault icon for the air outlet module.

[0032] The controller is electrically connected to the battery voltage detection module, the soap level sensor of the soap dispensing module, and the fan operation status sensor of the air outlet module, respectively, to collect the operating status data of the three-in-one faucet in real time. When the battery voltage detection module detects that the supply voltage is lower than a preset threshold (e.g., 3.9V), a battery undervoltage fault is triggered, and the battery undervoltage icon lights up. When the soap level sensor detects that the remaining soap is lower than a minimum preset value (e.g., 10% of the total capacity), a soap shortage fault is triggered, and the soap shortage icon lights up. When the fan operation status sensor detection module does not receive a fan start feedback signal or detects an abnormal fan speed, a fan fault is triggered in the air outlet module. These fault modes facilitate troubleshooting for users.

[0033] Based on the aforementioned differentiated usage scenarios, the existing operating procedures have significant usage defects and hygiene hazards: After a user obtains soap through the soap dispensing mode, soap residue will adhere to their hands. If it is necessary to move around to the top of the first probe 3 to switch modes (e.g., switch to standby mode, and then move around to the bottom of the second probe 4 to rinse off the soap residue), soap residue may drip onto the operating surface 11 of the faucet body 1, the sensing area of ​​the first probe 3, or surrounding structures during hand movement. This not only contaminates the faucet body 1, increasing cleaning and maintenance costs, but may also cause decreased sensing sensitivity and false triggering due to soap residue obscuring the sensing surface of the first probe 3. Furthermore, residual soap residue easily breeds bacteria, affecting hygiene and violating the core requirement of contactless cleaning. To address the issues of insufficient adaptability to the above scenarios, operational contamination, and poor functional synergy, this invention further optimizes the control method based on the original control logic. For the soap dispensing mode, the specific control steps are as follows: The control method further includes: in step S1, when the second probe 4 acquires a user signal and the controller controls the soap dispensing module to start working, the specific process is as follows: S11. First, control the water outlet module to output a fixed amount of water flow to achieve pre-wetting of the hands; S12. After the hands are pre-wetted, control the soap dispensing module to output a quantitative amount of soap solution; S13. After the soap liquid is dispensed, the controller starts timing and controls the water outlet module to output handwashing water after a set interval. S14. When the second probe 4 detects that the user's hand is away from the water, the water outlet module is controlled to stop water outlet operation.

[0034] Through the above steps, targeting the core scenario of using soap when hands are dirty, step S11 first outputs a quantitative pre-wetting water flow to form a water film on the hands, solving the problems of difficulty in lathering and uneven soap adhesion when dry hands directly contact soap; at the same time, step S13 automatically starts the rinsing water flow at a set interval. This set interval can be preset to 4-8 seconds according to ergonomic tests, specifically reserved for users to evenly apply soap to various areas of the hands such as the palms, backs of hands, and between the fingers and fully rub to lather, and then output the hand washing water flow through the water outlet module to complete the hand washing work.

[0035] This avoids the problem of soap dripping onto the hands after obtaining soap solution, and prevents the soap solution from dripping and contaminating the operating surface 11 of the faucet body 1 when switching modes by walking around above the first probe 3.

[0036] Furthermore, there is no need to remove your hands after soap application, wait for the faucet to reset to standby mode, and then re-trigger the water flow process. This solution automatically starts the rinsing water flow after the application interval, eliminating the need for users to wait for the faucet to reset or repeat the triggering operation, further simplifying the operation process.

[0037] Furthermore, the control module also includes a distance sensor, and during the water discharge process, the control method further includes: The controller collects the detection data from the distance sensor in real time and stores a mapping table of hand distance and water flow rate. When the water outlet module is started, the distance sensor obtains the real-time distance between the user's hand and the working surface 12, and the controller determines the target water outlet flow rate by querying the mapping relationship table between the hand distance and the water outlet flow rate based on the real-time distance.

[0038] Specifically, the distance sensor is integrated into the working surface 12 of the faucet body 1, and its detection area covers the effective water outlet range of the water outlet 14, for real-time acquisition of vertical distance data between the user's hand and the working surface 12; the water outlet module includes an adjustable flow rate water flow control valve (such as an electromagnetic proportional valve) to adapt to precise control of different water flow rates.

[0039] The controller has a built-in table that stores the mapping relationship between hand distance and water flow rate. This mapping relationship table is set according to the core logic that "the closer the hand is, the lower the water flow rate; the farther the hand is, the higher the water flow rate." An example is shown below:

[0040] By using a distance sensor to detect the hand position in real time and dynamically adjusting the flow rate based on a preset mapping table, it perfectly adapts to the needs of different usage scenarios. This significantly reduces the splashing of soap and water caused by water impacting the countertop or hands, reducing pollution of the faucet body, sink, and surrounding environment. This not only reduces cleaning and maintenance costs but also prevents bacteria growth from splashed wastewater, meeting the hygiene needs of bathroom scenarios. The water flow adapts to user operation behavior, enhancing the personalization and precision of the user experience.

[0041] Furthermore, the control module also includes a temperature sensor, and during the water discharge process, the control method further includes: The controller collects the detection data from the temperature sensor in real time and stores a mapping table between ambient temperature and outlet water temperature. When the water outlet module is started, the controller determines the target water outlet temperature by querying the mapping table based on the current ambient temperature.

[0042] The controller has a built-in mapping table between ambient temperature and outlet water temperature. This mapping table is set according to the core logic that "the lower the ambient temperature, the higher the target outlet water temperature; the higher the ambient temperature, the lower the target outlet water temperature," as shown in the example below:

[0043] With the above settings, users can obtain a water temperature that meets their comfort needs regardless of changes in ambient temperature, without the need for manual adjustment. This is especially suitable for the elderly, children, and other people who are sensitive to water temperature, enhancing the user experience and accuracy.

[0044] As another embodiment, the present invention provides control logic for user-initiated adjustment of water temperature, allowing users to choose whether to manually adjust it according to their own comfort needs. Specifically, during the water dispensing process, the control method further includes: The first probe 3 adjusts the water outlet temperature of the water outlet module by capturing the user's temperature control switching signal.

[0045] To identify the user's intention to raise or lower the water temperature and avoid confusion between different temperature control commands, this embodiment defines the gesture types of the user's temperature control switching signals differently. Specifically, the user's temperature control switching signals include upward waving gestures, downward waving gestures, and left and right horizontal waving gestures. If the first probe 3 detects an upward waving gesture, the controller controls the water outlet module to raise the water temperature to the set temperature, and the display screen 2 simultaneously displays the current water temperature value; If the first probe 3 detects a downward waving gesture, the controller controls the water outlet module to lower the water outlet temperature to a set temperature; If the first probe 3 detects a left or right waving gesture, the controller controls the water outlet module to lock the current water temperature and stop temperature adjustment.

[0046] Based on the above gestures, specific examples of the present invention are as follows: Upward waving gesture: The hand is raised vertically upward within the sensing area of ​​the first probe 3, with a trajectory length of 3-5cm and a dwell time of ≤1s; Downward waving gesture: Press your hand vertically downward within the sensing area of ​​the first probe 3, with a trajectory length of 3-5cm and a dwell time of ≤1s; Left and right horizontal waving gesture: The hand slides horizontally left and right within the sensing area of ​​the first probe 3, with a trajectory length of 5-8cm and a dwell time of ≤1s.

[0047] Each upward or downward waving gesture corresponds to a temperature adjustment step of 2℃. The manually adjusted water temperature must be within a safe and comfortable range, meaning the minimum temperature should not be lower than the ambient temperature of tap water (default ≥15℃, adaptable to different regional water source temperatures), and the maximum temperature should not exceed 45℃ (to avoid scalding). When the water temperature has reached the upper limit, an upward waving gesture will not be detected, and the display screen 22 will simultaneously display "Upper Limit Reminder". When the water temperature has reached the lower limit, a downward waving gesture will not be detected, and the display screen 2 will simultaneously display "Lower Limit Reminder".

[0048] When the first probe 3 detects a left or right waving gesture, the controller immediately locks the current water temperature and stops responding to subsequent upward or downward waving gestures. The water temperature value on the display screen 2 switches from "dynamic flashing" to "static constant light" and displays the lock icon simultaneously.

[0049] If the user's hand gesture for switching the signal is also a left-right waving gesture, in order to avoid conflict with the gesture for locking the current water temperature, the present invention sets the first probe 3 to respond to the temperature control switching signal only when the water outlet module is in working state (i.e., water outlet working in steps S13 and S2 above).

[0050] The above settings effectively avoid misidentification issues caused by the same operating area and similar movement patterns between temperature control switching gestures and mode switching gestures in step S1. This ensures that the triggering logic of mode switching and temperature adjustment operations are independent and respond accurately, avoiding unintended mode switching or temperature deviations, and further improving operational reliability and ease of use.

[0051] The soap dispensing module includes at least a soap bottle for storing soap liquid, a soap pump for supplying power to the soap liquid, and a soap dispensing pipe connecting the soap bottle and the soap pump. The water dispensing module includes at least a water supply pipe, a solenoid valve for controlling the water flow and on / off, and a heating element for heating the water flow. The air dispensing module includes at least a fan for generating the airflow required for drying hands, and an air outlet duct connecting the fan and the air outlet 15. All of the above components are existing technology and will not be described in detail here.

[0052] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0053] In the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0054] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A control method for a three-in-one faucet, characterized in that: The three-in-one faucet includes a faucet body, a soap dispenser module, a water outlet module, and an air outlet module, as well as a control module connected to the soap dispenser module, the water outlet module, and the air outlet module respectively; the control module includes a controller, a first probe, a second probe, and a wind control sensor probe; the faucet body includes an operating surface and a working surface, the working surface being provided with the soap outlet of the soap dispenser module, the water outlet of the water outlet module, the air outlet of the air outlet module, the second probe, and the wind control sensor probe; the operating surface is provided with the first probe; Its control method includes the following steps: S1. When the three-in-one faucet is in standby mode, if the first probe acquires a user signal, the controller starts a preset time countdown. Within the time range of the preset time countdown, if the second probe acquires a user signal, the controller controls the soap dispensing module to output soap liquid. S2. When the three-in-one faucet is in standby mode, if the second probe acquires a user signal, the controller controls the water outlet module to output handwashing water flow. S3. If the wind control sensor detects a user's gesture signal, the controller controls the air outlet module to start working.

2. The control method for a three-in-one faucet according to claim 1, characterized in that, In step S1, the start-up preset time countdown is set to within 7 seconds.

3. The control method for a three-in-one faucet according to claim 1, characterized in that, The control module also includes a light strip, which emits different light colors and effects to provide visual feedback to the user on the water temperature and air temperature when the three-in-one faucet is in standby, soap dispensing, air dispensing, fault, and water dispensing states.

4. The control method for a three-in-one faucet according to claim 1, characterized in that, The control module also includes a display screen, which can be switched between standby mode and soap dispensing mode; In step S1, if the first probe acquires a user signal, the display screen shows the soap mode. If the second probe fails to acquire a user signal within the countdown time of the preset start time, the controller controls the display screen to automatically switch back to the standby state.

5. The control method for a three-in-one faucet according to claim 4, characterized in that, The display screen is used to display the fault modes of the three-in-one faucet; The fault mode includes selecting one or more icons to light up, including a low battery icon, a soap shortage icon, and a fan fault icon for the air outlet module.

6. The control method for a three-in-one faucet according to claim 1, characterized in that, The control method further includes: In step S1, when the second probe acquires a user signal and the controller controls the soap dispensing module to start working, the specific process is as follows: S11. First, control the water outlet module to output a fixed amount of water flow to achieve pre-wetting of the hands; S12. After the hands are pre-wetted, control the soap dispensing module to output a quantitative amount of soap solution; S13. After the soap liquid is dispensed, the controller starts timing and controls the water outlet module to output handwashing water after a set interval. S14. When the second probe detects that the user's hand is away from the water, the water outlet module is controlled to stop water outlet operation.

7. The control method for a three-in-one faucet according to claim 1, characterized in that, The control module also includes a distance sensor, and during the water discharge process, the control method further includes: The controller collects the detection data from the distance sensor in real time and stores a mapping table of hand distance and water flow rate. When the water outlet module is started, the distance sensor obtains the real-time distance between the user's hand and the working surface, and the controller determines the target water outlet flow rate by querying the mapping relationship table between the hand distance and the water outlet flow rate based on the real-time distance.

8. The control method for a three-in-one faucet according to claim 1, characterized in that, The control module also includes a temperature sensor, and when the water outlet module is activated, the control method further includes: The controller collects the detection data from the temperature sensor in real time and stores a mapping table between ambient temperature and outlet water temperature. When the water outlet module is started, the controller determines the target water outlet temperature by querying the mapping table based on the current ambient temperature.

9. The control method for a three-in-one faucet according to claim 1, characterized in that, When the water outlet module is started, the control method further includes: The first probe adjusts the water outlet temperature of the water outlet module by capturing the user's temperature control switching signal.

10. The control method for a three-in-one faucet according to claim 9, characterized in that, The user temperature control switching signals include upward waving gestures, downward waving gestures, and left and right horizontal waving gestures; If the first probe detects an upward waving gesture, the controller controls the water outlet module to raise the water temperature to a set temperature, and the display screen simultaneously displays the current water temperature value; If the first probe detects a downward waving gesture, the controller controls the water outlet module to lower the water outlet temperature to a set temperature; If the first probe detects a left or right waving gesture, the controller controls the water outlet module to lock the current water temperature and stop temperature adjustment.

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