Intelligent closestool based on infrared detection

Abstract

The utility model discloses an intelligent closestool based on infrared detection. Comprising a closestool body, a closestool base arranged on the closestool body and an intelligent module for controlling the intelligent closestool. The closestool further comprises at least one infrared sensor which is in communication connection with the intelligent module and is arranged on the upper side of a closestool water seal. The infrared sensor is used for emitting at least one beam of infrared rays to a closestool water seal plane, receiving at least one infrared signal through the infrared receiver corresponding to the infrared sensor, and communicating the at least one infrared signal to the intelligent module. According to the utility model, the closestool identification area is arranged inside the closestool and above the water seal, so that frequent mistaken touch in a small space is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to intelligent closestool technical field especially, it relates to a kind of intelligent closestool based on infrared detection. BACKGROUND

[0002] The automatic flushing function of intelligent closestool mainly relies on infrared induction or microwave sensor technology. When the human body approaches or leaves the closestool, these sensors can acutely detect the presence or action of the human body, and then trigger the automatic flushing mechanism. Taking the infrared sensor as an example, its working principle is to process the received signals through the microcomputer inside the integrated circuit, and then send instructions to the pulse electromagnetic valve to control the flushing process. When the user sits on the closestool, the infrared sensing device can sense the body temperature and movement of the human body, and activate the flushing system. After the user leaves, the sensing device detects this action and automatically executes flushing after a set delay. The electromagnetic valve will automatically reset by the action of the internal spring when no signal is received, thereby closing the water flow. In addition, the system can also control the electromagnetic valve to open when the person leaves the toilet to flush the toilet, which avoids the traditional thermal release infrared sensor triggering flushing when the person enters and leaves the toilet, achieving water-saving effect.

[0003] However, this design needs to set an infrared induction area or induction range in the three-dimensional space of the closestool to ensure that the flushing function will only be triggered when the human hand or body is in the induction range. For small toilets, this may increase the risk of misoperation. If the induction range is set too large, the user may frequently trigger flushing due to space limitations when performing daily activities (such as bathing, brushing teeth) in the toilet; if the induction range is too small, the user may need to actively trigger the induction, which will weaken the convenience of the intelligent closestool. SUMMARY

[0004] Therefore, the purpose of the utility model is to provide an intelligent closestool based on infrared detection, which sets the recognized area of the closestool inside the closestool and above the water seal, increasing the risk of misoperation.

[0005] According to one aspect of the utility model, an intelligent closestool based on infrared detection is provided, which includes a closestool body, a closestool base set on the closestool body, and an intelligent module for controlling the intelligent closestool; characterized in that it further comprises:

[0006] At least one infrared sensor in communication with the intelligent module, the at least one infrared sensor is set on the upper side of the closestool water seal; the infrared sensor is used to emit at least one beam of infrared light to the closestool water seal plane, receive at least one infrared signal through the infrared receiver corresponding to the infrared sensor, and communicate the at least one infrared signal to the intelligent module.

[0007] In the above technical solution, the toilet water seal plane, i.e. the static water film formed at the bottom of the toilet, plays an important role in isolating odors, bacteria and insects in the sewer from invading the indoor environment. This water seal layer is naturally formed by gravity and is sustained by the S-shaped or U-shaped pipe structure inside the toilet. During the flushing process, the water flow quickly carries the sewage through the pipe and is then discharged, and the system automatically replenishes clean water to the water seal line to form a new water seal layer. This study monitors the slight fluctuations in the water seal plane to perceive changes in infrared emission. Experimental results show that when the water seal plane fluctuates, the integrated infrared sensor can sensitively capture subtle changes in infrared emission, and the characteristic values generated by these fluctuations can be used as a trigger signal for flushing. Compared with traditional external solutions, this case places the recognition area inside the toilet, switching from monitoring the human body to monitoring the water seal plane, reducing the probability of false triggering. Specifically, when a user uses the toilet, the water seal plane fluctuates, causing the infrared sensor to emit infrared signals to be affected, resulting in differences in the signals received by the infrared receiver when the water seal plane is calm. The receiver sends the captured infrared signals to the intelligent module, which determines whether a person is using the toilet based on the signals and controls the corresponding functions of the toilet, such as automatic flushing, automatic lid opening, etc.

[0008] In some embodiments, at least one of the infrared sensors is a transceiver integrated sensor, and is arranged on the toilet seat, or above the water seal.

[0009] In the above technical solution, the transceiver integrated sensor has the functions of emitting and receiving infrared light, i.e. it can both emit infrared light and receive reflected infrared signals. This design simplifies the system, as it does not require separate emitters and receivers, and one sensor can perform both functions. In addition, arranging the sensor on the toilet seat has significant advantages, as the toilet usually has a ceramic base, and compared to ceramic materials, the seat provides more convenient installation and position adjustment conditions. At the same time, this layout can better adapt to the specific location and height of the toilet water seal plane, thereby optimizing the performance and application effect of the sensor. Compared with the toilet seat, the structure of the toilet body side wall is usually more solid, which can provide a stable installation foundation for the sensor and reduce the risk of damage caused by vibration or impact during use.

[0010] In some embodiments, at least one of the infrared sensors is arranged on the toilet seat, and the infrared receiver corresponding to the at least one infrared sensor is arranged above the water seal.

[0011] In the above technical solution, the sensor and the receiver are respectively arranged on the toilet base and the side wall of the bowl, which can reduce the false triggering caused by changes in ambient light or non-human activities. Specifically, when the toilet base is sat on or turned over, the whole is prone to shaking or vibrating. If the receiver is placed on the toilet base, these vibrations and shaking may be captured by the sensor, thereby introducing unnecessary noise and affecting the stability and accuracy of the sensor. The side wall of the bowl is relatively stable and is not easily affected by vibrations and temperature changes during use, which is conducive to obtaining stable data.

[0012] In some embodiments, at least one of the infrared sensors is arranged above the water seal; and an infrared receiver corresponding to the at least one infrared sensor is arranged on the toilet base.

[0013] In the above technical solution, compared with the previous solution, this solution considers the accuracy requirement of the sensor more. As mentioned above, vibrations and shaking may be captured by the sensor, thereby introducing unnecessary noise and affecting the stability and accuracy of the sensor. Therefore, for some infrared sensors with low accuracy, it is more inclined to be arranged at the bowl to improve the stability of the emitted light.

[0014] In some embodiments, the infrared sensor emits infrared rays to any position in the central region of the water seal plane of the toilet.

[0015] In the above technical solution, first, men usually adopt a standing posture when urinating, and urine mainly falls into the central region of the water seal plane; while women or children sit when urinating, urine flows from the toilet wall surface away from the water tank to the water seal plane, and the fluctuation amplitudes generated by the two urination methods are significantly different. Second, if the sensor is arranged too close to the toilet wall surface, the fluctuation amplitudes generated by different genders when using the toilet will be relatively close, making it difficult to effectively distinguish. In addition, if the sensor is arranged close to the toilet wall surface near the water tank, the water seal plane fluctuation caused by slight urine when sitting on the toilet may not be obvious enough, leading to difficulty in identification. Therefore, positioning the infrared sensor in the central region of the water seal plane can not only improve the detection accuracy of urine fluctuation, but also distinguish the fluctuation difference generated by different genders when using the toilet, thereby optimizing the automatic sensing and flushing functions of the intelligent toilet. This layout design fully considers user experience and device performance, ensuring that the sensor can maintain efficient and accurate working state in various use scenarios. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced as follows. Obviously, the drawings in the following description only constitute some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0017] Figure 1 is a structure schematic view of an embodiment of the intelligent closestool based on infrared detection of the present application;

[0018] Figure 2 is a split structure schematic view of an embodiment of the intelligent closestool based on infrared detection of the present application;

[0019] Figure 3 is a cutaway schematic view of an embodiment of the intelligent closestool based on infrared detection of the present application;

[0020] Figure 4 is a schematic view of an optional embodiment of an embodiment of the intelligent closestool based on infrared detection of the present application;

[0021] Figure 5 is a schematic view of another optional embodiment of an embodiment of the intelligent closestool based on infrared detection of the present application;

[0022] Figure 6 is a schematic view of still another optional embodiment of an embodiment of the intelligent closestool based on infrared detection of the present application;

[0023] Figure 7 is a schematic view of a center area Q of an embodiment of the intelligent closestool based on infrared detection of the present application;

[0024] Figure 8 is a top view schematic view of a center area Q of an embodiment of the intelligent closestool based on infrared detection of the present application;

[0025] Figure 9 is a flow schematic view of an embodiment of the intelligent closestool based on infrared detection of the present application;

[0026] Figure 10 is a schematic view of a water seal plane in a calm state of an embodiment of the intelligent closestool based on infrared detection of the present application;

[0027] Figure 11 is a schematic view of a water seal plane in a user standing to urinate state of an embodiment of the intelligent closestool based on infrared detection of the present application;

[0028] Figure 12is a schematic view of a user sitting down to urinate according to the water seal plane of an embodiment of the intelligent closestool based on infrared detection;

[0029] Figure 13 is a schematic view of a user sitting down to defecate according to the water seal plane of an embodiment of the intelligent closestool based on infrared detection;

[0030] Figure 14 is one of the four-quadrant classification schematic views of an embodiment of the intelligent closestool based on infrared detection;

[0031] Figure 15 is the second of the four-quadrant classification schematic views of an embodiment of the intelligent closestool based on infrared detection. DETAILED DESCRIPTION

[0032] The utility model will be described in further detail below in combination with the drawings and embodiments. It is particularly pointed out that the following embodiments are only used to illustrate the utility model, but do not limit the scope of the utility model. Similarly, the following embodiments are only part of the embodiments of the utility model rather than all the embodiments, and all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of the utility model protection.

[0033] The utility model provides a kind of intelligent closestool based on infrared detection, the region identified by closestool is set in closestool interior, above water seal, increase the risk of misoperation.

[0034] One of the embodiments

[0035] Please refer to Figure 1 A kind of intelligent closestool based on infrared detection, including barrel body 2, and, closestool pedestal 1 of barrel body is set, and the intelligent module (not drawn in the figure, but prior art is set with intelligent processing module to provide different intelligent programs according to different feedback for better realization of intelligent effect, so specific module can refer to the setting mode of prior art, the intelligent module can be set on closestool pedestal, can also be set on closestool barrel body, here no longer tedious,).

[0036] The closestool further includes:

[0037] Please refer to Figure 2 At least one infrared sensor 11 in communication connection with intelligent module;Infrared sensor 11 shown in the figure is a transceiving integrated sensor, B + represents emitting infrared, B -Indicates receiving infrared rays. In this embodiment, the infrared sensor 11 is arranged on the toilet base (the specific arrangement position and angle and manner can be set according to actual needs, which are not limited here, as long as it can emit infrared rays to the water seal plane). The transceiver sensor has the functions of emitting and receiving infrared rays, that is, it can both emit infrared rays and receive reflected infrared signals. This design simplifies the system, because there is no need for separate transmitters and receivers, and one sensor can complete two functions. In addition, arranging the sensor on the toilet seat has significant advantages, considering that the toilet usually adopts a ceramic base, compared with ceramic materials, the seat provides more convenient installation and position adjustment conditions. At the same time, this layout can better adapt to the specific position and height of the toilet water seal plane, thereby optimizing the performance and application effect of the sensor.

[0038] Please refer to Figure 3 , at least one of the infrared sensors 11 is arranged on the upper side of the toilet water seal M; the infrared sensor 11 is used to emit at least one infrared ray to the toilet water seal plane M, receive at least one infrared signal through the infrared receiver corresponding to the infrared sensor (in this embodiment, the transceiver sensor, so the corresponding receiver is arranged inside the infrared sensor 11, and the transceiver infrared sensor is a prior art, the specific selection can refer to the prior art, which will not be repeated here) and communicate the at least one infrared signal to the intelligent module. The toilet water seal plane, that is, the static water film formed at the bottom of the toilet, plays an important role in isolating the odor, bacteria and insects in the sewer from invading the indoor. This water seal layer is naturally formed by gravity and relies on the S-shaped or U-shaped pipe structure inside the toilet to exist continuously. During the flushing process, the water flow rapidly carries the dirt through the pipe and is discharged, and then the system automatically replenishes clean water to the water seal line to form a new water seal layer. This study monitors the slight fluctuations of the water seal plane to perceive the changes of infrared emission. The experimental results show that when the water seal plane fluctuates, the integrated infrared sensor can sensitively capture the subtle changes of infrared emission, and the characteristic values generated by these fluctuation changes can be used as the trigger signal of flushing. Compared with the traditional external scheme, the recognition area in this case is built-in the toilet, which changes from monitoring the human body to monitoring the water seal plane, reducing the probability of false touch. Specifically, when the user uses the toilet, the water seal plane fluctuates, causing the infrared sensor to emit infrared signal to be affected, so that the signal received by the infrared receiver is different from that when the water seal plane is calm. The receiver sends the captured infrared signal to the intelligent module, and the intelligent module judges whether someone uses the toilet according to the signal, and controls the corresponding functions of the toilet, such as automatic flushing, automatic cover opening, etc.

[0039] As an optional embodiment, the transceiver sensor 11 is arranged on the side wall of the barrel, such as Figure 4As shown, compared with the toilet base, the structure of the barrel side wall is generally more solid, which can provide a stable installation basis for the sensor and reduce the risk of damage caused by vibration or impact during use. It should be noted that, Figure 4 This is only a display installation example and is not intended to limit the specific installation position.

[0040] As an optional embodiment, please refer to Figure 5 The at least one infrared sensor 11 is arranged on the toilet base 1, and the infrared receiver 12 corresponding to the at least one infrared sensor 11 is arranged on the barrel side wall 2. Arranging the sensor and the receiver on the toilet base and the barrel side wall respectively can reduce false triggering caused by changes in ambient light or non-human activities. Specifically, the toilet base is prone to shaking or vibrating after sitting or turning. If the receiver is placed on the toilet base, these vibrations and shaking may be captured by the sensor, thereby introducing unnecessary noise and affecting the stability and accuracy of the sensor. The barrel side wall is relatively stable and is not easily affected by vibrations and temperature changes during use, which is conducive to obtaining stable data. It should be noted that, Figure 5 This is only a display installation example and is not intended to limit the specific installation position.

[0041] As an optional embodiment, please refer to Figure 6 The at least one infrared sensor 11 is arranged on the barrel side wall 1, and the infrared receiver 12 corresponding to the at least one infrared sensor 11 is arranged on the toilet base 2. Compared with the previous scheme, this scheme takes into account the accuracy requirements of the sensor more. As mentioned above, vibrations and shaking may be captured by the sensor, thereby introducing unnecessary noise and affecting the stability and accuracy of the sensor. Therefore, for some infrared sensors with low accuracy, it is more inclined to be arranged at the barrel to improve the stability of the emitted light. It should be noted that, Figure 6 This is only a display installation example and is not intended to limit the specific installation position.

[0042] In this embodiment, please refer to Figure 7, the infrared sensor 11 emits infrared rays to any position in the center area Q of the toilet water seal plane M. First, men usually stand when urinating, and urine mainly falls into the center area of the water seal plane; while women or children sit when urinating, urine flows to the water seal plane from the toilet wall away from the water tank, and the fluctuation amplitude of the two urination methods is significantly different. Second, if the sensor is arranged too close to the toilet wall, the fluctuation amplitude generated by different genders when using the toilet will be closer, making it difficult to effectively distinguish. In addition, if the sensor is set near the toilet wall on the side of the water tank, the slight urine-induced water seal plane fluctuation may not be obvious when sitting, making identification difficult. Therefore, positioning the infrared sensor in the center area of the water seal plane not only improves the detection accuracy of urine fluctuation, but also distinguishes the fluctuation difference between different genders when using the toilet, thereby optimizing the automatic sensing and flushing functions of the intelligent toilet. This layout design fully considers user experience and device performance, ensuring that the sensor can maintain efficient and accurate working state in various use scenarios.

[0043] As a further limitation of the present embodiment, please refer to Figure 8 , the infrared sensor 11 emits infrared rays to any position in the center area of the toilet water seal plane M; the center area is the center of the toilet water seal plane, and the area surrounded by one-third of the length along the longitudinal axis Y and the transverse axis X. Based on the previous solution, the specific area further limits the recognition accuracy.

[0044] Embodiment two

[0045] In order to better explain the use principle of the above device, an intelligent toilet automatic flushing method based on infrared detection is proposed, which is as follows:

[0046] Please refer to Figure 9 An intelligent toilet based on infrared detection, the method comprises:

[0047] S1, monitor the infrared emission fluctuation caused by the fluctuation of the toilet water seal plane M, and obtain the fluctuation characteristic value; the fluctuation characteristic value is the intensity signal of light or the change of distance.

[0048] Please refer to Figure 10In the diagram, K represents an integrated infrared sensor, i.e., an active infrared sensor, which illuminates the water surface with infrared light, which is then reflected back to the receiving tube. A separate sensor can also be used, as long as it can emit infrared light and receive reflected light; details will not be elaborated upon here. It's important to note that the emission angle can be set according to the toilet's internal structure, aiming to ensure the emitted light is on the water seal plane. The specific angle setting can be determined based on actual needs. The diagram illustrates emission and reflection at different angles for reference only. M0 represents the toilet's water seal plane, the static water film formed at the bottom of the toilet. This film plays a crucial role in isolating odors, bacteria, and insects from the sewer, preventing them from entering the room. This water seal layer forms naturally by gravity and is sustained by the S-shaped or U-shaped pipe structure inside the toilet. During flushing, the water flow quickly carries waste through the pipes, and the system automatically replenishes clean water to the water seal line, thus forming a new water seal layer.

[0049] Please see Figure 11 , Figure 11 A schematic diagram of male urination is presented. In the diagram, P1 represents the direction and trajectory of urine emission. When a man urinates, the water seal plane M0 of the toilet ripples, forming water waves M1. As urine enters the water seal plane, changes in infrared emission are detected by monitoring the ripples in the water seal plane. Experimental results show that when the water seal plane ripples, the integrated infrared sensor can sensitively capture subtle changes in infrared emission. The characteristic values ​​generated by these ripple changes can serve as a trigger signal for flushing. Compared to traditional external solutions, this design places the recognition area inside the toilet bowl, reducing the probability of accidental activation. It should be noted that different infrared sensors have different sensitivity and other parameters, and the construction of different toilet products also varies. Those skilled in the art can adapt the appropriate infrared sensor according to their toilet configuration; this will not be elaborated upon here.

[0050] Please see Figure 12 , Figure 12 A schematic diagram of female urination was drawn. In the diagram, P1 represents the direction and trajectory of urine emission. When a man urinates, the water seal plane M0 of the toilet bowl ripples, forming water waves M2. Because men often urinate standing up, and due to differences in body size and muscle mass, the ripples are more intense when urine enters the water seal plane, while those in women are gentler. The monitoring principle is the same as above and will not be repeated here. The numerical feedback from the infrared sensor can distinguish between male and female, which is used for subsequent analysis.

[0051] S2. Based on the characterization value, monitor the start and end times of toilet use, and trigger the smart toilet to flush automatically according to the time points.

[0052] In this embodiment, with Figure 10 For example, the method is specifically as follows:

[0053] A1, emit infrared light signals at a preset distance above the water seal plane to the water seal plane M0;

[0054] A2, record the reflected infrared emission signals when the water seal plane M0 is calm as the first characterization value;

[0055] A3, when the water seal plane generates fluctuations to form water waves M1, continuously collect the fluctuation parameter values of the infrared reflection or refraction, take the parameter values as the second characterization value, and form a characterization sequence after deducting the first characterization value;

[0056] A4, based on the start and end points of the characterization sequence as the time points for triggering the flushing of the intelligent toilet.

[0057] In this embodiment, the urination of the human body causes fluctuations in the water seal plane, and the fluctuation values captured by the infrared sensor serve as the starting signal for flushing; when the fluctuation values gradually stabilize, they serve as the termination signal for flushing. Once the termination point is reached, the system automatically triggers the flushing mechanism to ensure the cleanliness and hygiene of the toilet. Specifically, the infrared sensor emits infrared light signals at a preset position above the water seal plane and monitors the reflection of these signals. When the water seal plane is not fluctuating, the reflected infrared emission signals remain stable, and this state is recorded as the reference signal or the first characterization value. When the water seal plane fluctuates due to human action or other factors, the reflected infrared emission signals change accordingly, and these changes are continuously collected and recorded as the second characterization value. By subtracting the first characterization value (the reflection value in calm state) from the second characterization value (the reflection value in fluctuation), a characterization sequence is obtained, which truly reflects the fluctuation of the water seal plane and eliminates the influence of environmental factors on the infrared emission, thereby enhancing the accuracy and reliability of the system. By analyzing the start and end points of this characterization sequence, the beginning and end of the toilet behavior can be accurately determined. For example, when the user starts using the toilet, the water seal plane fluctuates intensively, and the characterization sequence changes accordingly; after the user leaves, the fluctuation decreases, and the characterization sequence returns to calm. The intelligent toilet automatically triggers the flushing function accordingly, achieving automation and intelligent control of the flushing. This scheme not only has the advantage of water saving - as it only triggers flushing after detecting actual use, avoiding unnecessary waste of water resources - but also provides a more accurate and reliable user experience compared to traditional sensing methods (such as microwave sensing), as it is less likely to trigger false alarms.

[0058] In this embodiment, please refer to Figure 13 , where P3 is the resolution. When the water seal plane M0 fluctuates, it also includes:

[0059] A31, the second characteristic value collected at the time of water wave formation when the first water seal plane M0 fluctuates, is deducted from the first characteristic, and if the result is less than the first threshold value, it is determined to be urine; otherwise, it is determined to be stool. Since the volume and weight of stool are much larger than urine, the intensity of the fluctuation of the water seal plane when entering water is much higher than that in the urine state, and the threshold value can be set to judge the initial state to distinguish the two defecation methods, thereby avoiding false triggering. It should be noted that due to different heights of the toilet, sizes of the water seal plane, and different uses of the sensor, the first threshold value can be set according to the product of the person skilled in the art, which is not limited here.

[0060] In this embodiment, by emitting an infrared light signal at a predetermined position above the water seal plane and recording the reflected infrared emission signal of the water seal plane in a static state, these signals are taken as the first characteristic value as a reference. When the water seal plane fluctuates due to the defecation behavior, the infrared emission parameter values of these fluctuations are continuously collected and taken as the second characteristic value. By comparing the difference between the second characteristic value (parameter value in fluctuation) and the first characteristic value (reflection value in calm), the intelligent toilet can distinguish between stool and urine events. If the difference is less than the first preset threshold value, the system will determine it as urine; if the difference reaches or exceeds the threshold value, it will be determined as stool. This judgment mechanism sets the threshold value according to the fluctuation characteristics of the water seal plane caused by different defecation behaviors. Experimental results show that there is a significant difference in the change of infrared emission under the conditions of urine and stool, which is mainly because the fluctuation caused by urine entering the water is usually smaller than that of feces entering the water, resulting in different infrared emission fluctuations and intensities collected under the two conditions. Based on this finding, the threshold value can be preset according to different use scenarios to achieve accurate judgment and response of the intelligent toilet. This method not only improves the intelligence level of the intelligent toilet, but also provides users with a more sanitary and convenient use experience.

[0061] In this embodiment, if it is determined to be urine, the start and end points of the characteristic sequence are used as the time points to trigger the flushing of the intelligent toilet, and then the following steps are included:

[0062] A51, based on the characteristic sequence, a mapping relationship between the characteristic value and the defecation time t is constructed, and the average value of the characteristic values in the interval of 15% t ~ 85% t is extracted and taken as the first index of the defecation;

[0063] A61, the above steps are repeated for a preset number of times, and the median value of the defecation time and the median value of the characteristic value are extracted, denoted as (t0, Q0), where t0 is the median value of the defecation time and Q0 is the median value of the characteristic value;

[0064] A71, taking (t0, Q0) as the coordinate value, a four-quadrant classification interval is constructed using the four-quadrant classification method, and the four-quadrant classification interval is constructed using the four-quadrant classification method. Figure 14For example, the first quadrant: long toilet time, high representation value, may indicate a long and intense toilet behavior. The second quadrant: short toilet time, high representation value, may indicate a fast and intense toilet behavior. The third quadrant: short toilet time, low representation value, may indicate a mild toilet behavior. The fourth quadrant: long toilet time, low representation value, may indicate a slow toilet behavior. Specific settings can be made according to different needs, and only an example is given here. When the intelligent toilet recognizes a urination event, the triggering of its flushing mechanism is based on the start and end points of the representation sequence. Specifically, the system starts timing when it detects the start of the urination behavior, and performs the flushing operation at an appropriate time point after the behavior ends. By constructing the mapping relationship between the representation value and the toilet time t, the dynamic changes of the representation value over time during the toilet process can be understood in depth. Further, the representation values in the interval of 15% to 85% of the toilet time are extracted, and the average value of the representation values in this interval is calculated. This average value is defined as the first index of this toilet event, as a key parameter to evaluate the characteristics of the toilet behavior. By repeating the above steps a predetermined number of times, the average value of the representation value is extracted each time, and after the iteration is completed, the median values are sorted and extracted, denoted as (t0, Q0), where t0 is the median value of the toilet time, and Q0 is the median value of the representation value. The median value is a robust statistical quantity that can reduce the influence of outliers and provide more reliable data. Using (t0, Q0) as coordinate values, a four-quadrant classification interval is constructed using the four-quadrant classification method. This method can map different toilet behavior characteristics into four quadrants, each representing a specific behavior pattern or health condition. This classification method allows the intelligent toilet not only to automatically perform flushing functions, but also to monitor the health status of users and provide health feedback or warnings. For example, if the user's toilet behavior frequently appears in a specific quadrant, the system can prompt the user to pay attention to dietary habits or seek medical advice. This scheme analyzes and classifies toilet behavior, not only improving the automation level of the intelligent toilet, but also providing potential value for health monitoring for users. This system can be used for personal health management and assist medical institutions in remote monitoring of patient health status.

[0065] In this embodiment, A71, using (t0, Q0) as coordinate values, adopts a four-quadrant classification method to construct a four-quadrant classification interval, and then further includes,

[0066] A81, each time urinating, record the representation value - the toilet time t of this time, based on the representation value - the toilet time t of this time and the four-quadrant classification interval, distinguish: young men, young women, middle-aged and old people, and children.

[0067] Please refer to Figure 15According to the age segmentation standard of the World Health Organization (WHO), the population can be divided into the following age groups: children (0-14 years old), young people (15-44 years old), middle-aged people (45-59 years old), and the elderly (60 years old and above). The intelligent toilet can identify users of different ages by analyzing the distribution characteristics in the four-quadrant classification interval and combining the above age segmentation. Specifically,

[0068] Children may have shorter toilet time due to their small body size, and the corresponding characteristic value is also relatively low. They can be classified into the third quadrant.

[0069] In contrast, young men and women have significant differences in the characteristic values generated by their toilet behavior due to differences in body size and muscle mass. Studies have shown that the average male bladder urine storage capacity is generally higher than that of women, with an average of 50-100 ml more than women. Therefore, young men are classified in the first quadrant, and women are classified in the second quadrant. The elderly may have longer toilet time due to physiological changes, and the characteristic value is also relatively flat, so they are classified in the fourth quadrant. It should be noted that the four-quadrant example here only roughly distinguishes four different groups, and those skilled in the art can further cluster based on big data to make more classifications, such as young male, adult male, young female, adult female, etc., which will not be described here. At the same time, when distinguishing between young men and women, in addition to considering toilet time and characteristic values, other physiological parameters such as body weight and body size can also be considered, which may affect the distribution of characteristic values. The intelligent toilet can provide customized feedback and suggestions based on the age and gender of the user. For example, for children, the intelligent toilet can provide more gentle flushing settings; for the elderly, it can provide more comfortable seat heating and appropriate flushing intensity. By comprehensively analyzing the characteristic values and time data of toilet behavior and combining the four-quadrant classification method, the intelligent toilet can effectively distinguish users of different ages and genders, and thus provide more personalized services and health monitoring. This meticulous approach not only improves user experience, but also helps to achieve precise health assessment and intervention, bringing intelligent health solutions that better meet the physiological and health needs of different user groups.

[0070] In this embodiment, A81, record the characteristic value - this toilet time t each time, based on the characteristic value - this toilet time t of this time and the four-quadrant classification interval to distinguish: young men, young women, the elderly, and children, and then include:

[0071] A91, based on the second characteristic value, obtain the output voltage value of the collected second characteristic value at the corresponding time point, and calculate based on the following formula:

[0072]

[0073] In the formula, C is the theoretical temperature value; V is the output voltage value; K is the sensor constant, which is the product of the sensitivity R of the detector, the standard urine emissivity ∈, and the Stefan-Boltzmann constant σ;

[0074] A101, based on the mapping relationship between the characteristic sequence and the theoretical temperature value of the time t, and extracting the average value of the theoretical temperature value in the interval of 15% t~85% t, and taking the average value as the second index of the time t;

[0075] A111, comparing the second index with the second threshold value to determine whether it is abnormal.

[0076] Each time the intelligent toilet records the relationship between the characteristic value and the time t of the toilet. Based on the characteristic value of the toilet, the system will capture the output voltage value V of the second characteristic value at the corresponding time point. This voltage value reflects the sensitive response of the sensor to the change of urine or other physical quantities (such as temperature), providing basic data for subsequent calculation. Using the formula to calculate the theoretical temperature value C, which is based on physical laws to extract temperature information from the voltage output of the sensor. Further, based on the characterization sequence, a mapping relationship between the theoretical temperature value and the time t of this toilet visit is constructed. This mapping relationship helps to understand the dynamic changes of temperature over time during the toilet visit. The theoretical temperature values in the interval of 15% to 85% of the toilet visit time are extracted, and the average value of the temperature values in this interval is calculated as the second index of this toilet visit. This average value serves as a key parameter for evaluating the characteristics of the toilet behavior. The second index calculated this time is compared with the preset second threshold value to determine whether there is an anomaly. If the difference between the current index and the second threshold value is large, it may indicate an abnormal situation, such as a health problem or a system failure. The second threshold value can be set through a calibration process or determined based on the average value of historical second indexes. By comparing the current second index with the second threshold value, the intelligent toilet can identify potential health problems or system abnormalities. For example, if the temperature value is consistently abnormally high or low, it may indicate that the user has a fever or other health problems; if the fluctuation range of the temperature value is abnormal, it may indicate a sensor failure or the need for recalibration. The intelligent toilet can effectively distinguish users of different age groups by analyzing the characterization values and time data of the toilet behavior, calculating the theoretical temperature value based on physical formulas, and comparing with historical data, and can provide health monitoring function. This method not only improves the automation level of the intelligent toilet, but also provides the possibility of health monitoring for users, opening up new ways for personal health management and remote patient monitoring for medical institutions. It needs to be declared that the temperature measured by this scheme is not accurate, but can be used as a relative quantity to measure the relative changes in different urination situations, so in this case, the calculated result is more inclined to be used as a dimensionless index record. However, a temperature sensor can be set to obtain the corresponding temperature data, or a more sensitive infrared sensor with higher accuracy can be used to obtain more accurate data, which will not be described here

[0077] In this embodiment, if it is determined to be defecation, the start and end points of the characterization sequence are used as the time points to trigger the flushing of the intelligent toilet, and then the following steps are included:

[0078] A62, if it is determined to be defecation, when the fluctuation characterization value is unchanged, the intelligent toilet is triggered to flush. The intelligent toilet continuously monitors the infrared emission fluctuations above the water seal plane and converts these fluctuations into characterization values. These characterization values reflect the fluctuations of the water seal plane, and thus the user's toilet behavior can be inferred. When the fluctuation characterization value remains unchanged for a period of time, the intelligent toilet determines that the user's defecation behavior has ended. This is because during defecation, the fluctuations of the water seal plane will change with the user's actions, and when the fluctuations stop, it can be considered that defecation has been completed.

[0079] The intelligent toilet can also judge the amount of stool according to the fluctuation of the fluctuation representation value to adjust the strength and duration of flushing. For example, if the amount of stool is large, the corresponding fluctuation of the representation value is also more obvious, and by setting a threshold value or a scale, the approximate amount of stool can be preliminarily judged each time the fluctuation occurs. The amount of stool is large, and the toilet can use stronger flushing force and longer flushing time to ensure cleaning. It should be noted that different infrared sensor sensitivity parameters are different, and the structures of different toilet products are also different. Those skilled in the art can adapt the corresponding infrared sensor according to their own toilet configuration, and then set the threshold value or the scale. Here, no further description is given.

[0080] The above only describes some embodiments of the present application, and does not limit the protection scope of the present application. Any equivalent device or equivalent process conversion, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the present application.

Claims

1. A smart toilet based on infrared detection, comprising a toilet bowl, a toilet base disposed on the toilet bowl, and a smart module for controlling the smart toilet; characterized in that, Also includes: At least one infrared sensor is communicatively connected to the smart module, and the infrared sensor is disposed on the upper side of the toilet water seal; the infrared sensor is used to emit at least one beam of infrared light to the toilet water seal plane, receive at least one infrared signal through an infrared receiver corresponding to the infrared sensor, and communicate the at least one infrared signal to the smart module.

2. The smart toilet based on infrared detection as described in claim 1, characterized in that, At least one of the infrared sensors is a transceiver sensor and is disposed on the toilet base or above the water seal.

3. The smart toilet based on infrared detection as described in claim 1, characterized in that, At least one of the infrared sensors is disposed on the toilet base; an infrared receiver corresponding to the at least one infrared sensor is disposed above the water seal.

4. The smart toilet based on infrared detection as described in claim 1, characterized in that, At least one of the infrared sensors is disposed above the water seal; an infrared receiver corresponding to the at least one infrared sensor is disposed on the toilet base.

5. A smart toilet based on infrared detection as described in claim 1, characterized in that, The infrared sensor emits infrared light to any position in the center area of ​​the toilet water seal plane.

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