Induction adjustable gear faucet

Abstract

The application relates to the technical field of intelligent control, in particular to an inductive adjustable gear faucet, which comprises a faucet induction acquisition module, a data acquisition module connected with the faucet induction acquisition module, a data processing module connected with the data acquisition module, an adjusting module connected with the data processing module, and a faucet body connected with the adjusting module. The inductive adjustable gear faucet uses the faucet induction acquisition module to non-contact detect the user identity and the hand staying time in the induction area, completely avoids the cross infection risk of bacteria and viruses caused by manual contact of the traditional faucet, is especially suitable for a hospital operating room and other scenes with extremely high hygiene requirements, can effectively reduce the possibility of contacting the pollution source when a medical staff washes hands before and after operation, and guarantees the safety of the medical environment.

Description

Technical Field

[0001] This invention relates to the field of intelligent control technology, and in particular to a sensor-controlled adjustable faucet. Background Technology

[0002] Currently, most faucets adjust the water flow or temperature by rotating a switch. However, this requires human contact with the faucet, which poses a problem in certain situations, such as when doctors wash their hands before and after surgery. If doctors manually rotate the switch to adjust the water flow, the faucet, touched by multiple people, can easily carry bacteria and viruses, which can be brought into the operating room by medical staff and infect patients.

[0003] For example, Chinese Patent Publication No. CN220249067U discloses a water tap adjustment structure, including a housing, a water outlet chamber and a heating component disposed within the housing, and a hot / cold water adjustment component disposed on the housing. The hot / cold water adjustment component includes an inlet channel, a first input channel and a second input channel connecting to the water outlet chamber. The inlet channel can be selectively connected to either the first or the second input channel. The first input channel is connected to a differential pressure switch. The differential pressure switch receives the water flow and activates the heating component, and guides the water flow into the water outlet chamber. The second input channel is used to supply cold water to be output from the water outlet chamber, so that when the inlet channel is connected to the first input channel, the water tap is in the hot water position, and when the inlet channel is connected to the second input channel, the water tap is in the cold water position. The differential pressure switch is integrated into the first input channel, eliminating the need for a separate activation channel for the heating component.

[0004] For example, Chinese Patent Publication No. CN117823701A discloses a sensor faucet and its control method. The control method includes: controlling water flow output when an object is present within the sensing range; acquiring water flow status data; adjusting the sensing range to equal the opening range when there is no water flow output; adjusting the sensing range to equal the maintaining range when there is water flow output; and maintaining the range is larger than the opening range. When the water flow status data includes water flow output, it is determined that the sensor faucet is in an open water flow state, and the sensing range is adjusted to equal the maintaining range. That is, the sensing range is large, making it less likely for the moving hand or object to leave the sensing range during hand or object washing, thus facilitating the maintenance of the open water flow and making hand or object washing easier.

[0005] As can be seen, the existing manual control faucet adjusts the water temperature by manually rotating a differential pressure switch to control the ratio of hot and cold water flow. However, this requires human hands to touch the faucet, and the faucet is easily touched by multiple people, which can carry bacteria and viruses and cause cross-infection. As for the automatic control faucet, it cannot identify the individual user's gear requirements and adjust the gear accordingly. Summary of the Invention

[0006] To address this issue, the present invention provides a sensor-activated adjustable faucet to overcome the problem in the prior art where automatic adjustable faucets cannot identify the individual user's gear requirements, resulting in low gear adjustment efficiency.

[0007] To achieve the above objectives, the present invention provides a sensor-activated adjustable faucet, comprising:

[0008] The faucet sensor module is used to identify the user's identity and detect the first, second, and third dwell times of the user's hand in the sensing area. The first, second, and third dwell times are the dwell times of a single user in the sensing area acquired sequentially.

[0009] The data acquisition module is connected to the faucet sensor acquisition module and is used to acquire the user's identity information and acquire the user's historical data based on the user's identity information. The historical data includes the historical first dwell time data and the corresponding historical output flow data of the faucet.

[0010] The data processing module, connected to the data acquisition module, is used to determine the first water flow rate of the faucet based on the first dwell time of the user's hand in the sensing area, historical first dwell time data, and the corresponding historical output flow rate data of the faucet.

[0011] An adjustment module, connected to the data acquisition module and the data processing module respectively, is used to adjust the first water flow rate of the faucet according to the second residence time and / or the third residence time to determine the second water flow rate of the faucet;

[0012] The faucet body is connected to the adjustment module to obtain water flow control information from the data processing module or the adjustment module, and to control the water flow output based on the first water flow rate / second water flow rate of the obtained water flow control information.

[0013] Furthermore, the data processing module determines the first time-water flow correspondence based on the historical first dwell time data and the corresponding historical output flow data of the faucet, and determines the first water flow of the faucet based on the first dwell time of the user's hand in the sensing area detected by the faucet sensing acquisition module and the first time-water flow correspondence.

[0014] The first time-water flow correspondence includes several time intervals, and each time interval corresponds to an output water flow.

[0015] Furthermore, the data processing module determines the user's offset time range based on the first time-water flow correspondence, and determines the first water flow of the faucet based on the first dwell time of the user's hand in the sensing area detected by the faucet sensing acquisition module, the user's offset time range, and the first time-water flow correspondence.

[0016] Furthermore, the data processing module determines a target time interval based on the correspondence between the first dwell time of the user's hand in the sensing area detected by the faucet sensor acquisition module and the first time-water flow rate, and determines the first water flow rate of the faucet based on the target time interval:

[0017] If there is one target time interval, then the output water flow rate corresponding to the target time interval is determined as the first water flow rate of the faucet;

[0018] If there are two target time intervals, count the number of times the user's hand is in the sensing area detected by the faucet sensor module in the historical first dwell time data corresponding to the two target time intervals. Determine the output water flow rate corresponding to the target time interval with more times the user's hand is in the sensing area detected by the faucet sensor module.

[0019] If the number of historical first dwell time data corresponding to the two target time intervals is equal to the number of times the user's hand lingers in the sensing area as detected by the faucet sensor module, then...

[0020] The user offset time range is determined based on two target time intervals and the first dwell time of the user's hand in the sensing area detected by the faucet sensor acquisition module. The user perception offset coefficients for the two target time intervals are determined based on the user offset time ranges. The output water flow rate corresponding to the target time interval with the larger user perception offset coefficient is determined as the first water flow rate of the faucet.

[0021] Furthermore, the adjustment module determines the reduction of the first water flow rate based on the second residence time and the correspondence between the second time and the water flow rate, or determines the increase of the first water flow rate based on the third residence time and the correspondence between the third time and the water flow rate, and adjusts the first water flow rate according to the reduction or increase of the first water flow rate to determine the second water flow rate of the faucet.

[0022] Furthermore, the faucet sensor acquisition module is also used to detect the first temperature data when the user's hand is in the sensing area, and the data processing module determines the first water temperature data based on the first temperature data.

[0023] Furthermore, the faucet sensing module is also used to detect ambient temperature data, second water temperature data at the faucet, and the length of water flow from the user's hand to the faucet. The data processing module determines third water temperature data based on the ambient temperature data, first water temperature data, length of water flow from the user's hand to the faucet, and second water flow rate.

[0024] Furthermore, the adjustment module adjusts the second water temperature at the faucet so that the third water temperature data is equal to the first water temperature data.

[0025] Furthermore, the adjustment module adjusts the ratio of hot and cold water flow at the faucet, thereby adjusting the second water temperature data at the faucet, while keeping the first or second water flow rate constant.

[0026] Furthermore, if both the second and third dwell times are 0, the first dwell time of the user's hand in the sensing area detected by the faucet sensor acquisition module is added to the historical data, and the first water flow of the faucet is added to the historical output flow data.

[0027] If the second or third dwell time is not 0, the first dwell time of the user's hand in the sensing area detected by the faucet sensor module is added to the historical data, and the second water flow of the faucet is added to the historical output flow data.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0029] The sensor-activated adjustable faucet of the present invention uses a faucet sensing module to identify the user and detect the time the hand stays in the sensing area without contact. This completely avoids the risk of cross-infection of bacteria and viruses caused by manual contact with traditional faucets. It is especially suitable for scenarios with extremely high hygiene requirements, such as hospital operating rooms. It can effectively reduce the possibility of medical staff coming into contact with contaminants when washing their hands before and after surgery, and ensure the safety of the medical environment.

[0030] Furthermore, the adjustment module supports dynamic adjustment of the initial flow rate based on the dwell time of a single user within the sensing area, further meeting real-time needs in different scenarios. This retains the flexibility of user self-adjustment while maintaining the hygienic advantages of contactless operation throughout. Overall, this invention's faucet, by integrating identity recognition, behavior perception, and data-driven decision-making, achieves an upgrade from passive operation to proactive service. It not only reduces water waste (through intelligent flow matching) but also reduces equipment wear caused by frequent touches, possessing public health and safety value, energy-saving and environmental protection value, and user experience optimization value. It is particularly significant in high-risk infection environments.

[0031] Furthermore, the sensor-activated adjustable faucet provided by this invention effectively solves the problem of reliance on user time perception in contactless technology through non-contact interaction and intelligent adaptive adjustment mechanisms. By identifying the user through the faucet's sensing module and retrieving historical user data (hand dwell time and corresponding flow rate settings) through the data acquisition module, it can generate personalized time intervals and flow rates (first water flow rate) for different users, completely avoiding adjustment deviations caused by individual differences in time perception. For example, for users with weak time perception, the flow rate (i.e., the setting) can be automatically matched to a level closer to their actual needs based on their historical operating habits, without relying on the user's precise control over the duration of hand occlusion, significantly improving the accuracy and operational error tolerance of non-contact occlusion sensing.

[0032] Furthermore, this invention adjusts the water temperature based on the user's hand skin temperature, significantly improving the user experience and overall efficiency. It generates a comfortable water temperature by directly matching or overlaying a preset value based on the hand surface temperature, accurately adapting to individual differences and environmental changes, avoiding discomfort from excessively cold or hot water caused by traditional fixed water temperatures. The non-contact temperature measurement and control integrated design reduces the risk of cross-infection from hand contact with the faucet and eliminates the need for manual temperature adjustment, improving operational efficiency and making it suitable for high-frequency use in public places. Simultaneously, adjusting the water temperature as needed reduces resource waste during the mixing of hot and cold water. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of the sensor-activated adjustable faucet of the present invention;

[0034] Figure 2 This is a flowchart illustrating the process of determining the first water flow rate of a faucet according to an embodiment of the present invention.

[0035] Figure 3 This is a flowchart illustrating the process of determining the second water flow rate of a faucet according to an embodiment of the present invention.

[0036] Figure 4 This is a flowchart illustrating the process of updating historical data in an embodiment of the present invention. Detailed Implementation

[0037] To make the objectives and advantages of the present invention clearer, the present invention will be further described below with reference to embodiments; it should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention.

[0038] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0039] It should be noted that in the description of this invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc., which indicate directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and is not intended to indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.

[0040] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] Please see Figure 1 As shown, an embodiment of the present invention provides a sensor-activated adjustable faucet, comprising:

[0042] The faucet sensor module is used to identify the user's identity and to detect in real time the first, second, and third dwell times of the user's hand in the sensing area. The first, second, and third dwell times are the dwell times of a single user in the sensing area acquired sequentially.

[0043] The data acquisition module is connected to the faucet sensor acquisition module and is used to acquire the user's identity information and acquire the user's historical data based on the user's identity information. The historical data includes the historical first dwell time data and the corresponding historical output flow data of the faucet.

[0044] The data processing module, connected to the data acquisition module, is used to determine the first water flow rate of the faucet based on the first dwell time of the user's hand in the sensing area, historical first dwell time data, and the corresponding historical output flow rate data of the faucet.

[0045] An adjustment module, connected to the data acquisition module and the data processing module respectively, is used to adjust the first water flow rate of the faucet according to the second residence time and / or the third residence time to determine the second water flow rate of the faucet;

[0046] The faucet body is connected to the adjustment module to obtain water flow control information from the data processing module or the adjustment module, and to control the water flow output based on the first water flow rate / second water flow rate of the obtained water flow control information.

[0047] The sensor-activated adjustable faucet of the present invention uses a faucet sensing module to identify the user and detect the time the hand stays in the sensing area without contact. This completely avoids the risk of cross-infection of bacteria and viruses caused by manual contact with traditional faucets. It is especially suitable for scenarios with extremely high hygiene requirements, such as hospital operating rooms. It can effectively reduce the possibility of medical staff coming into contact with contaminants when washing their hands before and after surgery, and ensure the safety of the medical environment.

[0048] Furthermore, the adjustment module of this invention supports dynamic adjustment of the initial flow rate based on the dwell time of a single user within the sensing area, further meeting real-time needs in different scenarios. This retains the flexibility of user-controlled adjustment while maintaining the hygienic advantages of contactless operation throughout. Overall, this invention's faucet, by integrating identity recognition, behavior perception, and data-driven decision-making, achieves an upgrade from passive operation to proactive service. It not only reduces water waste (through intelligent flow matching) but also minimizes equipment wear caused by frequent touching, combining public health and safety value, energy conservation and environmental protection value, and user experience optimization value. It is particularly significant in high-risk infection environments.

[0049] It is understood that the present invention realizes the faucet opening by detecting obstruction. For example, in one embodiment, an infrared sensor detects whether a hand is blocking the infrared light, causing the signal strength received by the receiver to decrease or be interrupted. After the obstruction signal is identified, the sensor determines that "someone is using it".

[0050] It is understood that the faucet sensing acquisition module of the present invention includes several monitoring units or sensing components for sensing detection.

[0051] As one implementation, the faucet sensor acquisition module also includes a facial recognition unit. When the infrared sensor blocks the signal, it determines that "someone is using the device" and activates the facial recognition unit to identify the user.

[0052] Specifically, the data processing module determines the first time-water flow correspondence based on historical first dwell time data and corresponding historical output flow data of the faucet, and determines the first water flow of the faucet based on the first dwell time of the user's hand in the sensing area and the first time-water flow correspondence detected by the faucet sensing acquisition module.

[0053] The first time-water flow correspondence includes several time intervals, and each time interval corresponds to an output water flow.

[0054] Understandably, the time interval is determined based on all historical first dwell time data under the same faucet setting / water flow rate. Specifically, the left interval of the time interval is the minimum value among the historical first dwell time data under the same faucet setting / water flow rate, and the right interval of the time interval is the maximum value among the historical first dwell time data under the same faucet setting / water flow rate.

[0055] In one embodiment, it is assumed that the faucet has 5 speed settings, corresponding to: speed setting 1, flow rate S1; speed setting 2, flow rate S2; speed setting 3, flow rate S3; speed setting 4, flow rate S4; and speed setting 5, flow rate S5.

[0056] Based on a person's historical first dwell time data and the corresponding historical output flow rate data of the faucet, the correspondence between the first time and water flow rate is determined as follows:

[0057] In gear 1, the output water flow rate is S1, and the corresponding historical first residence time data range is [0.1~1.2s];

[0058] At setting 2, the output water flow rate is S2, and the corresponding historical first residence time data range is [0.8~2.2s];

[0059] At speed 3, the output water flow rate is S3, and the corresponding historical first residence time data range is [2.1~3.2s];

[0060] At speed 4, the output water flow rate is S4, and the corresponding historical first residence time data range is [2.9~4.3s];

[0061] At setting 5, the output water flow rate is S5, and the corresponding historical first residence time data range is [3.8~5.2s].

[0062] Specifically, the data processing module determines the user's offset time range based on the first time-water flow correspondence, and determines the first water flow of the faucet based on the first dwell time of the user's hand in the sensing area detected by the faucet sensor acquisition module, the user's offset time range, and the first time-water flow correspondence.

[0063] Please see Figure 2 The data processing module determines the target time interval based on the correspondence between the first dwell time of the user's hand in the sensing area detected by the faucet sensor acquisition module and the first time-water flow rate, and determines the first water flow rate of the faucet based on the target time interval:

[0064] If there is one target time interval, then the output water flow rate corresponding to the target time interval is determined as the first water flow rate of the faucet;

[0065] If there are two target time intervals, count the number of times the user's hand is in the sensing area detected by the faucet sensor module in the historical first dwell time data corresponding to the two target time intervals. Determine the output water flow rate corresponding to the target time interval with more times the user's hand is in the sensing area detected by the faucet sensor module.

[0066] If the number of historical first dwell time data corresponding to the two target time intervals is equal to the number of times the user's hand lingers in the sensing area as detected by the faucet sensor module, then...

[0067] The user offset time range is determined based on two target time intervals and the first dwell time of the user's hand in the sensing area detected by the faucet sensor acquisition module. The user perception offset coefficients for the two target time intervals are determined based on the user offset time ranges. The output water flow rate corresponding to the target time interval with the larger user perception offset coefficient is determined as the first water flow rate of the faucet.

[0068] In one embodiment, the number of time intervals is the same as the number of tap settings, with 5 time intervals: [0~1.2s], [0.8~2.2s], [2.1~3.2s], [2.9~4.3s], and [3.8~5.2s], with corresponding tap output water flow rates of S1~S5.

[0069] The data processing module determines the target time interval based on the correspondence between the first dwell time of the user's hand in the sensing area detected by the faucet sensor and the first time-water flow rate. Specifically, the time interval of the first dwell time of the user's hand in the sensing area detected by the faucet sensor is compared with the time interval of the first time-water flow rate correspondence, and the time interval in which the first dwell time of the user's hand in the sensing area is detected by the faucet sensor is defined as the target time interval.

[0070] In one embodiment, if the faucet sensor module detects that the user's hand stays in the sensing area for 0.5 seconds, then the target time interval is [0 to 1.2 seconds].

[0071] In one embodiment, if the faucet sensor module detects that the user's hand stays in the sensing area for 1.1 seconds, then the target time interval is [0-1.2 seconds] and [0.8-2.2 seconds].

[0072] In one embodiment, there is only one target time interval, which is [0~1.2s], then the output water flow rate S1 is the first water flow rate of the faucet.

[0073] In one embodiment, there are two target time intervals, namely [0~1.2s] and [0.8~2.2s]. Then, the number of historical first dwell time data corresponding to the two target time intervals that are the same as the first dwell time of the user's hand in the sensing area detected by the faucet sensor acquisition module is counted. That is, the number / number of historical first dwell time data with 1.1s in the target time interval [0~1.2s] is N1, and the number / number of historical first dwell time data with 1.1s in the target time interval [0.8~2.2s] is N2.

[0074] If the number of historical first dwell time data points of 1.1s in the target time interval [0~1.2s] is greater than the number of historical first dwell time data points of 1.1s in the target time interval [0.8~2.2s] is greater than the number of historical first dwell time data points of 1.1s in the target time interval [0~1.2s] is greater than the number of historical first dwell time data points of 1.1s in the target time interval [0~1.2s] is less than the number of historical first dwell time data points of 1.1s in the target time interval [0.8~2 ...

[0075] The user offset time range is determined based on two target time intervals and the first dwell time of the user's hand in the sensing area detected by the faucet sensor module. This includes: for the two target time intervals, determining the overlapping interval of the two target time intervals, and dividing the overlapping interval according to the first dwell time of the user's hand in the sensing area detected by the faucet sensor module to obtain the user offset time range.

[0076] In one embodiment, if the number / number of historical first dwell time data of 1.1s in the target time interval [0~1.2s] is equal to the number / number of historical first dwell time data of 1.1s in the target time interval [0.8~2.2s], the overlapping interval of the target time interval [0~1.2s] and the target time interval [0.8~2.2s] is [0.8~1.2s]. Based on the first dwell time of the user's hand in the sensing area of ​​1.1s detected by the faucet sensor acquisition module, the overlapping interval is divided to obtain the user offset time ranges of [0.8~1.1s] and [1.1s~1.2s].

[0077] The user perception offset coefficient for the two target time intervals is determined based on the user offset time range. This includes: counting the total number of all historical first dwell time data corresponding to the user offset time range in the two target time intervals, and the number / number of times the user's hand in the sensing area is the same as the first dwell time of the user's hand detected by the faucet sensor module in the historical first dwell time data corresponding to the target time interval. The user perception offset coefficient is the ratio of the number / number of times the user's hand in the sensing area is the same as the first dwell time of the user's hand detected by the faucet sensor module in the historical first dwell time data corresponding to the target time interval to the total number of all historical first dwell time data corresponding to the user offset time range in the target time interval.

[0078] In one embodiment, the number A1 of all historical first dwell time data corresponding to the user offset time range [0.8-1.1s] within the target time interval [0-1.2s] is counted, where N1 is the number / number of historical first dwell time data points of 1.1s, and the user-perceived offset coefficient P1 is the ratio of N1 (the number / number of historical first dwell time data points of 1.1s) to A1 (the total number of historical first dwell time data points of A1 within the user offset time range [0.8-1.1s]) within the target time interval [0-1.2s]. The number A2 of all historical first dwell time data corresponding to the user offset time range [1.1s~1.2s] within the target time interval [0.8~2.2s] is calculated, where N2 is the number / frequency of historical first dwell time data with a duration of 1.1s. The user-perceived offset coefficient P2 is the ratio of N1 (the number / frequency of historical first dwell time data with a duration of 1.1s) to A2 (the total number of historical first dwell time data corresponding to the user offset time range [1.1s~1.2s] within the target time interval [0.8~2.2s]. If the user-perceived offset coefficient P1 is greater than P2, then the output water flow rate S1 corresponding to the target time interval [0~1.2s] is taken as the first water flow rate of the faucet; if the user-perceived offset coefficient P1 is less than P2, then the output water flow rate S2 corresponding to the target time interval [0.8~2.2s] is taken as the first water flow rate of the faucet.

[0079] It is understandable that this invention adjusts the faucet speed / flow rate by detecting the duration of obstruction. If speed adjustment is achieved simply by setting a correspondence between obstruction time and water flow rate—for example, setting the faucet speed to 1 and flow rate to s1 for an obstruction time of 0-1 seconds, speed to 2 and flow rate to s2 for an obstruction time of 1-2 seconds, speed to 3 and flow rate to s3 for an obstruction time of 2-3 seconds, and so on—the following problems arise: different people have different perceptions of time. Some people are more sensitive to time and can accurately judge the obstruction time to adjust the faucet speed, while others have a poorer sense of time and are less precise in their timing, easily leading to a discrepancy between the desired faucet speed / flow rate and their actual needs.

[0080] The sensor-activated adjustable faucet provided by this invention effectively solves the problem of reliance on user time perception in contactless technology through non-contact interaction and intelligent adaptive adjustment mechanisms. By identifying the user through a faucet sensor module and retrieving historical user data (hand dwell time and corresponding flow rate settings) through a data acquisition module, it can generate personalized time intervals and flow rates (first water flow) for different users, completely avoiding adjustment deviations caused by individual differences in time perception. For example, for users with weak time perception, the faucet can automatically match a flow rate (i.e., level) closer to their actual needs based on their historical operating habits, without relying on the user's precise control over the duration of hand occlusion, significantly improving the accuracy and operational error tolerance of non-contact occlusion sensing.

[0081] Please see Figure 3 The adjustment module determines the reduction of the first water flow rate based on the second residence time and the correspondence between the second time and the water flow rate, or determines the increase of the first water flow rate based on the third residence time and the correspondence between the third time and the water flow rate. The first water flow rate is adjusted according to the reduction or increase of the first water flow rate to determine the second water flow rate of the faucet.

[0082] More specifically, the adjustment module determines the reduction amount of the first water flow based on the real-time second residence time and the second time-water flow correspondence, wherein the second time-water flow correspondence can be that the first water flow is reduced by a predetermined step size for every 1 second increase in time.

[0083] In one embodiment, assuming the faucet has 5 speed settings, the first water flow rate is determined as S4, corresponding to the 4th speed setting. The faucet sensing module detects the second dwell time of the user's hand in the sensing area in real time. For every 1 second increase in the second dwell time, the first water flow rate S4 is reduced by a predetermined step size to decrease the water flow, or the speed setting is reduced by one, and the water flow rate becomes S3. If the second dwell time is increased by another 1 second, the water flow rate becomes S2.

[0084] The adjustment module determines the increase in the first water flow rate based on the third residence time and the correspondence between the third time and the water flow rate, which is similar to the adjustment module determining the decrease in the first water flow rate based on the real-time second residence time and the correspondence between the second time and the water flow rate. Therefore, it will not be elaborated on here.

[0085] This invention's adjustment module dynamically adjusts the initial flow rate through second and third dwell times, allowing users to flexibly adjust the water flow non-contactly. This maintains adjustment freedom while reducing the complexity of single-time time control through phased operation. Furthermore, the fully contactless interactive design completely avoids direct hand contact with the faucet, fundamentally cutting off the transmission path of bacteria and viruses. This is particularly suitable for high-hygiene-standard scenarios such as hospital operating rooms, significantly reducing the risk of cross-infection among medical staff due to handwashing. This invention also optimizes water resource utilization through data-driven intelligent decision-making, such as reducing redundant flow supply based on user habits to achieve energy conservation and consumption reduction. Simultaneously, non-mechanical operation reduces wear on traditional knob structures, extending the equipment's lifespan. In summary, this invention's faucet integrates identity recognition, behavior perception, and adaptive algorithms to construct an intelligent water flow control system centered on the user, balancing hygiene and safety, ease of operation, and resource efficiency. It has significant application value in hygiene-sensitive fields such as healthcare and catering.

[0086] Specifically, the faucet sensor acquisition module is also used to detect the first temperature data when the user's hand is in the sensing area, and the data processing module determines the first water temperature data based on the first temperature data.

[0087] In one implementation method, the first water temperature data is equal to the first temperature data.

[0088] As one implementation method, the first water temperature data = the first temperature data + the preset temperature value.

[0089] Understandably, the first temperature data is the surface temperature of the user's hand skin, and the first water temperature data is determined based on the first temperature data, which is the comfortable water temperature for human hands.

[0090] Specifically, the faucet sensing module is also used to detect ambient temperature data, second water temperature data at the faucet, and the length of water flow from the user's hand to the faucet. The data processing module determines third water temperature data based on the ambient temperature data, first water temperature data, the length of water flow from the user's hand to the faucet, and first or second water flow rate.

[0091] Specifically, the adjustment module adjusts the second water temperature at the faucet so that the third water temperature data is equal to the first water temperature data.

[0092] Understandably, the third water temperature data is the water temperature when the water from the faucet reaches the user's hand.

[0093] When water is released from the faucet outlet, a forced convection heat transfer process occurs between the water and the surrounding air. In this heat transfer phenomenon, the velocity of the water flow can be equivalent to the relative velocity between the fluid and the air medium. At this time, the water and air directly exchange heat through convection. The amount of heat exchanged is related to the temperature difference between the medium (the difference between the second water temperature and the ambient temperature), the contact area, and the duration of the heat exchange. The temperature difference is the difference between the second water temperature and the current ambient temperature. The cross-section of the water flow from the faucet can be approximated as a circle. The contact area is the surface area of ​​this circle moving along the water flow path. The circumference of the water flow can be calculated based on the faucet outlet specifications (i.e., the first water flow rate or the second water flow rate), and multiplied by the real-time water flow length from the user's hand to the faucet outlet to obtain the contact area. The duration of the heat exchange follows the basic kinematic formula, that is, the trajectory length is proportional to the flow velocity. The ratio, specifically the real-time water flow length from the user's hand to the faucet divided by the flow velocity, is used. After pre-setting the heat transfer coefficient and specific heat capacity constant of the air / water two-phase medium, the cooling model can use the convective heat transfer calculation formula to calculate the heat transfer. Combined with the specific heat capacity of water, the temperature drop of the water flow in the air is obtained, and the third water temperature data is calculated. The data processing module determines the most comfortable contact water temperature for the user, i.e., the first water temperature data. Based on the real-time water flow length from the user's hand to the faucet (i.e., the distance between the faucet and the user's contact water position), the third water temperature that the user should adjust at the faucet can be calculated. Further calculation yields the second water temperature that can be adjusted at the faucet, which can ensure that the water temperature in contact with the user remains constant at the most suitable temperature when different users use the faucet or when the user changes the water flow path length.

[0094] This invention determines the first water temperature data (primary target temperature) based on the first temperature data, and dynamically calculates the second water temperature data (secondary control temperature) that needs to be pre-compensated at the water outlet based on the real-time monitored fluid movement trajectory length (the length of water flow from the user's hand to the faucet). This control mechanism ensures that regardless of user differences or changes in operating distance, the actual third water temperature in contact with the skin is stably maintained at the target temperature, i.e., the first water temperature data (tertiary control temperature).

[0095] It is understandable that the first temperature data, ambient temperature data, second water temperature data, water flow length, etc., can all be detected in real time by setting up sensors. Real-time detection of the above data by sensors is a mature existing technology, and will not be elaborated here.

[0096] Specifically, the adjustment module adjusts the ratio of hot and cold water flow at the faucet, thereby adjusting the second water temperature data at the faucet, while keeping the first or second water flow rate constant.

[0097] This invention adjusts the water temperature based on the user's hand skin temperature, significantly improving the user experience and overall efficiency. It generates a comfortable water temperature by directly matching or overlaying preset values ​​based on the hand surface temperature, accurately adapting to individual differences and environmental changes (such as automatically compensating for low hand temperatures in winter), avoiding discomfort from excessively cold or hot water caused by traditional fixed water temperatures. The non-contact temperature measurement and control integrated design reduces the risk of cross-infection from hand contact with the faucet and eliminates the need for manual temperature adjustment, improving operational efficiency and making it suitable for high-frequency use in public places. Furthermore, on-demand water temperature adjustment reduces resource waste during the mixing of hot and cold water (such as running water while waiting for temperature adjustment).

[0098] Please see Figure 4 If both the second and third dwell times are 0, the first dwell time of the user's hand in the sensing area detected by the faucet sensor module is added to the historical data, and the first water flow of the faucet is added to the historical output flow data.

[0099] If the second or third dwell time is not 0, the first dwell time of the user's hand in the sensing area detected by the faucet sensor module is added to the historical data, and the second water flow of the faucet is added to the historical output flow data.

[0100] This invention identifies user satisfaction with the initial water flow / level by determining whether the second and third dwell times are zero. If the user does not make secondary adjustments (the second and third dwell times are zero), the first dwell time and the corresponding initial flow (first water flow) are directly recorded as valid data, ensuring that historical data accurately reflects the user's uninterrupted needs and avoiding data contamination caused by misoperation or short dwell times. If the user actively adjusts the flow through the second or third dwell time (the dwell time is not zero), the adjusted final flow (second water flow) is associated with and stored with the initial dwell time, accurately capturing the user's actual needs and providing a more complete decision-making basis for subsequent flow decisions.

[0101] The historical data mechanism of this invention enables real-time closed-loop updates of user data. By continuously accumulating user adjustment behaviors in different scenarios, it can dynamically optimize the personalized traffic matching model and gradually reduce the frequency of manual adjustments by users. For example, when a user repeatedly fine-tunes the initial traffic to a certain fixed traffic level, the system will automatically learn this correlation pattern and directly generate an initial traffic level / tier that meets the target value, effectively reducing the adjustment burden on users caused by time perception bias.

[0102] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of the present invention.

[0103] 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 present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A sensor-activated adjustable faucet, characterized in that, include: The faucet sensor module is used to identify the user's identity and detect the first, second, and third dwell times of the user's hand in the sensing area. The first, second, and third dwell times are the dwell times of a single user in the sensing area acquired sequentially. The data acquisition module is connected to the faucet sensor acquisition module and is used to acquire the user's identity information and acquire the user's historical data based on the user's identity information. The historical data includes the historical first dwell time data and the corresponding historical output flow data of the faucet. The data processing module, connected to the data acquisition module, is used to determine the first water flow rate of the faucet based on the first dwell time of the user's hand in the sensing area, historical first dwell time data, and the corresponding historical output flow rate data of the faucet. An adjustment module, connected to the data acquisition module and the data processing module respectively, is used to adjust the first water flow rate of the faucet according to the second residence time and / or the third residence time to determine the second water flow rate of the faucet; The faucet body is connected to the adjustment module to obtain water flow control information from the data processing module or the adjustment module and to control the water flow output according to the first water flow rate / second water flow rate of the obtained water flow control information. The first time-water flow correspondence is determined based on the historical first dwell time data and the corresponding historical output flow data of the faucet. The first water flow of the faucet is determined based on the first dwell time of the user's hand in the sensing area and the first time-water flow correspondence detected by the faucet sensing module. In the first time-water flow correspondence, the first time includes several time intervals, and each time interval corresponds to an output water flow. The user's offset time range is determined based on the first time-water flow correspondence. The first water flow of the faucet is determined based on the first dwell time of the user's hand in the sensing area, the user's offset time range, and the first time-water flow correspondence detected by the faucet sensor acquisition module. The target time interval is determined by the correspondence between the user's hand dwell time in the sensing area detected by the faucet sensor module and the first time-water flow rate. The first water flow rate of the faucet is then determined based on the target time interval. If there is one target time interval, then the output water flow rate corresponding to the target time interval is determined as the first water flow rate of the faucet; If there are two target time intervals, count the number of times the user's hand is in the sensing area detected by the faucet sensor module in the historical first dwell time data corresponding to the two target time intervals. Determine the output water flow rate corresponding to the target time interval with more times the user's hand is in the sensing area detected by the faucet sensor module. If the number of historical first dwell time data corresponding to the two target time intervals is equal to the number of times the user's hand lingers in the sensing area as detected by the faucet sensor module, then... The user offset time range is determined based on two target time intervals and the first dwell time of the user's hand in the sensing area detected by the faucet sensor acquisition module. The user perception offset coefficients for the two target time intervals are determined based on the user offset time ranges. The output water flow rate corresponding to the target time interval with the larger user perception offset coefficient is determined as the first water flow rate of the faucet.

2. The sensor-activated adjustable faucet according to claim 1, characterized in that, The adjustment module determines the reduction of the first water flow rate based on the second residence time and the correspondence between the second time and the water flow rate, or determines the increase of the first water flow rate based on the third residence time and the correspondence between the third time and the water flow rate. The first water flow rate is then adjusted based on the reduction or increase of the first water flow rate to determine the second water flow rate of the faucet.

3. The sensor-operated adjustable faucet according to claim 1, characterized in that, The faucet sensor acquisition module is also used to detect the first temperature data when the user's hand is in the sensing area, and the data processing module determines the first water temperature data based on the first temperature data.

4. The sensor-activated adjustable faucet according to claim 3, characterized in that, The faucet sensing module is also used to detect ambient temperature data, second water temperature data at the faucet, and the length of water flow from the user's hand to the faucet. The data processing module determines third water temperature data based on the ambient temperature data, first water temperature data, length of water flow from the user's hand to the faucet, and second water flow rate.

5. The sensor-activated adjustable faucet according to claim 4, characterized in that, The adjustment module adjusts the second water temperature at the faucet so that the third water temperature data is equal to the first water temperature data.

6. The sensor-activated adjustable faucet according to claim 5, characterized in that, The adjustment module adjusts the ratio of hot and cold water flow at the faucet while keeping the first or second water flow rate constant, thereby adjusting the second water temperature data at the faucet.

7. The sensor-activated adjustable faucet according to claim 6, characterized in that, If both the second and third dwell times are 0, the first dwell time of the user's hand in the sensing area detected by the faucet sensor module is added to the historical data, and the first water flow of the faucet is added to the historical output flow data. If the second or third dwell time is not 0, the first dwell time of the user's hand in the sensing area detected by the faucet sensor module is added to the historical data, and the second water flow of the faucet is added to the historical output flow data.

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