Toilet flushing control method and system

Abstract

The flushing control method comprises the following steps that after a user sits, if urine is detected firstly, the action that excrement and the user leave the seat is monitored within a first time duration, if excrement is not detected and the user does not leave the seat, a defecation assisting and washing mode is entered, and after excrement is detected, the defecation assisting and washing mode is stopped and a first abnormal defecation behavior is judged; and if the user leaves the seat, judging that the urinating behavior is normal. If the excrement is detected firstly, whether the user leaves the seat or not is judged within a second time period; if the user leaves the seat, the normal excrement behavior is judged; and judging that a second abnormal defecation behavior is determined if the user does not leave the seat and does not have excrement in the later period. And after the user leaves the seat, executing a corresponding flushing mode according to the behavior type: opening a small flushing mode during urination, opening a large flushing mode during normal or second abnormal defecation, and opening a first large flushing mode during first abnormal defecation. Through excrement detection, time judgment and multi-mode flushing logic, the problems of dirt residue and wall hanging caused by too long defecation time or abnormal defecation of a user are solved, and the cleaning efficiency and the use experience are improved.

Description

Technical Field

[0001] This invention relates to the field of sanitary ware, and in particular to a flushing control method and system for a toilet. Background Technology

[0002] Current smart toilets generally use a fixed flushing pattern triggered by leaving the seat, a technology with significant limitations in adaptability. On one hand, modern lifestyles, influenced by changes in diet and pace of life, lead to gastrointestinal issues (such as constipation and diarrhea), resulting in significant variations in the form and adhesion of feces. Existing systems can only provide a uniform flushing intensity, failing to effectively address the residue of hard, dry stools or the sticky residue of loose stools. On the other hand, users frequently use electronic devices during toilet use, extending the time spent on the toilet, causing feces to dry and harden on the ceramic surface, further complicating flushing.

[0003] Besides shortcomings in flushing logic, existing smart toilet systems generally lack measures to assist with bowel movements for specific needs such as constipation. They cannot provide effective pre-treatment before flushing during the user's toilet use. This technological deficiency not only leads to reduced flushing effectiveness but also directly impacts the user experience, making it difficult to fully realize the automation advantages of smart toilets in special scenarios. Summary of the Invention

[0004] The main objective of this invention is to overcome the shortcomings of existing toilet flushing modes, which are limited and lack assisted defecation measures. This invention proposes a toilet flushing control method and system that, through the identification and dynamic response of user toilet behavior, combined with excrement detection, time judgment, and multi-mode flushing logic, effectively solves problems such as residue and wall sticking caused by excessively long toilet time or abnormal defecation, thereby improving cleaning efficiency and user experience.

[0005] The present invention adopts the following technical solution:

[0006] A method for controlling the flushing of a toilet, comprising the following:

[0007] After the user sits down, the toilet performs the following judgment:

[0008] If urine is detected first, it is determined whether no feces are detected and whether the user has not left the seat within the first time period. If so, the toilet is controlled to enter the defecation assistance washing mode, and the defecation assistance washing mode is stopped after feces are detected, and the user is determined to have performed the first abnormal defecation behavior; if no feces are detected and the user has left the seat, the user is determined to have performed normal urination behavior.

[0009] If feces are detected first, it is determined whether the user leaves the seat during the set second time period. If yes, the user is determined to have performed normal defecation behavior. If no, it is determined again during the later part of the second time period whether feces are detected. If no, the user is determined to have performed a second abnormal defecation behavior. If yes, the user is determined to have performed normal defecation behavior.

[0010] When the user gets up, the toilet performs the following actions:

[0011] If the user urinates, a small flush is activated; if the user defecates normally or performs a second abnormal defecation, a large flush is activated; if the user performs a first abnormal defecation, the corresponding first large flush mode is activated.

[0012] The specific features of the assisted bowel movement washing mode are as follows:

[0013] Initiate a posterior wash and check if feces are detected within the set third time period. If not, initiate the posterior wash again and check if feces are detected within the set third time period. If no feces are detected after initiating the posterior wash a set number of times, stop the assisted bowel movement wash mode.

[0014] After a user performs the first abnormal bowel movement, when the posterior wash is initiated, it is set to perform a number of posterior washes at a set first interval, with each posterior wash lasting less than the normal posterior wash time.

[0015] The first flushing mode corresponding to the first abnormal defecation behavior means: first start a small flush for pre-flushing, and then start a large flush after the set second interval.

[0016] After determining that the user has performed a second abnormal defecation behavior, the posterior wash is initiated and set to perform a number of posterior washes at a set third interval, with each posterior wash lasting less than the normal posterior wash time.

[0017] The first abnormal defecation behavior refers to the following: after the user sits down, urine is detected first, but no feces are detected within a set first time period and the user does not leave the seat, and then feces are detected after entering the defecation assistance washing mode; the second abnormal defecation behavior refers to the following: after the user sits down, feces are detected, but the user does not leave the seat within a set second time period and no feces are detected again in the later part of the second time period.

[0018] If the toilet detects residue on the bowl after the user performs the first or second abnormal defecation behavior and the toilet bowl is flushed, the corresponding flushing mode will be executed again, and the toilet bowl will be checked again after flushing to see if there is any residue. This process will be repeated. If there is still residue after the set number of flushing cycles, a warning will be issued.

[0019] Infrared thermal imaging data of the inner wall of the toilet bowl is collected by an infrared thermal imaging unit and compared with the original infrared thermal imaging data of the inner wall of the toilet bowl. If they are inconsistent, there is dirt residue.

[0020] A toilet flushing control system, comprising:

[0021] The detection module includes a liquid detection unit and a moving object detection unit, which are used to detect urine and feces after the user sits down;

[0022] The user behavior judgment module is used to determine whether the user is performing urination, normal defecation, the first abnormal defecation behavior, or the second abnormal defecation behavior based on the information detected by the detection module.

[0023] The control module is used to control the detection module to start detecting urine and feces after the user sits down; if urine is detected first and the user does not leave the seat within a set first time period, the assisted washing mode is activated; and after the user leaves the seat, the corresponding control command is sent to the flushing execution module to control the operation based on the judgment result of the user behavior judgment module.

[0024] The flushing execution module is used to execute the corresponding flushing mode according to the control instructions of the control module: if the user performs the urination behavior, the small flush is activated; if the user performs the normal defecation behavior or the second abnormal defecation behavior, the large flush is activated; if the user performs the first abnormal defecation behavior, the corresponding large flush mode is activated.

[0025] The liquid detection unit uses a capacitive sensor, which is located on the top of the toilet bowl with its sensing end tilted downwards. The sensing area of ​​the capacitive sensor is located above the water surface of the toilet bowl. The moving object detection unit uses a proximity sensor, which is also installed on the top of the toilet bowl with its sensing end tilted downwards. The sensing area of ​​the capacitive sensor is located above the water surface of the toilet bowl.

[0026] When the capacitive sensor detects liquid flow but the proximity sensor does not detect object movement, the detection module determines that urine has been detected; when the proximity sensor detects object movement but the capacitive sensor does not detect liquid flow, the detection module determines that feces have been detected.

[0027] The proximity sensor is an infrared sensor.

[0028] As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. In this invention, the excrement detection function is activated after the user sits down, and the toilet behavior is dynamically analyzed in conjunction with a preset time length to identify urination, normal defecation, and abnormal defecation. For abnormal defecation behavior with difficulty in defecation, this invention further introduces a defecation assistance washing mode, which assists the excretion process through pre-rinsing, optimizes the user experience, and improves the pre-treatment effect before flushing.

[0030] 2. In this invention, when a user performs abnormal defecation behavior, a differentiated cleaning mode is activated for targeted treatment, and the frequency and duration of posterior washing are adjusted to adapt to the cleaning needs of abnormal defecation behavior.

[0031] 3. In this invention, the residual dirt on the toilet bowl wall can also be detected by the infrared thermal imaging unit, and a warning can be triggered if there is still residue after multiple flushes, thereby improving the reliability of cleaning.

[0032] 4. In this invention, the accuracy of excrement type identification can be improved by the coordinated detection of capacitive sensor and proximity sensor, avoiding judgment deviation caused by misjudgment by a single sensor.

[0033] 5. In this invention, the sensing areas of both the capacitive sensor and the proximity sensor are located above the water surface of the toilet bowl, which can reduce interference from liquids or solids on the water surface and improve detection reliability. Attached Figure Description

[0034] Figure 1 This is the main flowchart of the present invention;

[0035] Figure 2 This is a schematic diagram of the proximity sensor installation location according to the present invention;

[0036] Figure 3 This is a schematic diagram showing the installation position of the capacitive sensor of the present invention;

[0037] Figure 4 This is a schematic diagram showing the installation location of the detection module on the toilet.

[0038] Figure 5 System composition diagram of the present invention.

[0039] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Detailed Implementation

[0040] The present invention will be further described below through specific embodiments.

[0041] The toilet in this invention is a smart toilet, whose core functions include flushing, rinsing, and waste detection. The flushing function includes strong and gentle flushes, and the rinsing function includes posterior wash, feminine wash, and bowel movement assist wash modes. The bowel movement assist wash uses a water outlet adjacent to the posterior wash outlet to clean the buttocks. The bowel movement assist wash mode differs from a conventional posterior wash in water pressure. For example, it uses higher water pressure than a conventional posterior wash to promote defecation, and the duration of the bowel movement assist wash differs from that of a conventional posterior wash. Waste detection includes detecting urine and feces, which can be differentiated based on differences in the natural fall point of waste (urine falls forward, feces fall vertically) or through multi-sensor fusion technology.

[0042] See Figure 1 This invention proposes a toilet flushing control method, applied to toilets. By identifying normal and abnormal toilet use behaviors, the flushing or washing is intelligently controlled. Abnormal toilet use behaviors include a first abnormal defecation behavior and a second abnormal defecation behavior. The first abnormal defecation behavior refers to the behavior where, after the user sits down, urine is detected first, no feces are detected within a set first time period and the user does not leave the seat, and feces are detected after entering the assisted washing mode. The second abnormal defecation behavior refers to the behavior where, after the user sits down, feces are detected, the user does not leave the seat within a set second time period, and no feces are detected again in the later part of the second time period.

[0043] The method of the present invention includes the following steps:

[0044] After the S1 user sits down, the toilet activates its waste detection function and performs the following checks:

[0045] If urine is detected first, it is determined whether no feces are detected and whether the user has not left the seat within the first time period. If so, the toilet is controlled to enter the defecation assistance washing mode, and the defecation assistance washing mode is stopped after feces are detected, and the user is determined to have performed the first abnormal defecation behavior. If no feces are detected and the user leaves the seat, the user is determined to have performed the normal urination behavior.

[0046] In this step, the assisted bowel movement washing mode specifically works as follows: The assisted bowel movement washing is initiated once, and the system checks whether feces are detected within a set third time period. If not, the assisted bowel movement washing is initiated again, and the system checks whether feces are detected within the set third time period. If no feces are detected after initiating the set number of assisted bowel movement washing cycles, the assisted bowel movement washing mode is stopped. In practical applications, the assisted bowel movement washing mode can either check for feces after the current assisted bowel movement washing cycle has ended, or it can check for feces during the assisted bowel movement washing process, depending on the actual situation.

[0047] If feces are detected first, it is determined whether the user left their seat during the set second time period. If so, the user is considered to have performed normal defecation behavior. If not, it is determined again later in the second time period whether feces are detected. If not, it means that the user remained seated for a long time after using the toilet, and the user is considered to have performed a second abnormal defecation behavior. If feces are detected again later in the second time period, it means that the user has performed normal defecation behavior.

[0048] After determining that the user has performed a second abnormal bowel movement, considering that the user may not have washed their buttocks promptly in this situation, potentially leading to constipation, a posterior sitz bath is activated. This sitz bath is set to be performed a certain number of times at a predetermined third interval. The third interval is set according to needs, and "a certain number of times" means two or more posterior sitz baths, with each sitz bath lasting less than the regular posterior sitz bath time. For example, each posterior sitz bath can be set to last 60%-80% of the regular posterior sitz bath time. A regular posterior sitz bath refers to the posterior sitz bath function activated under normal bowel movement conditions.

[0049] This step also includes a scenario: if urine is detected first and then feces are detected within the first time period and the user has not left the seat, then proceed to the step of determining whether the user has left the seat within the set second time period to further determine whether the user's defecation behavior is normal or abnormal.

[0050] In this step, the first and second time durations are calculated from the moment the user sits down, while the third time duration is calculated each time the assisted bowel movement is initiated in the assisted bowel movement mode. The first, second, and third time durations can be adjusted according to actual needs to adapt to different user behavior characteristics. For example, the first time duration can be selected from 5 to 10 minutes, the second time duration from 15 to 20 minutes, and the third time duration from 2 to 4 minutes. In the assisted bowel movement mode, the time interval between two consecutive assisted bowel movements can be 3 to 4 minutes. The later part of the second time duration refers to the latter half of the set second time duration. For example, if the second time duration is 15 minutes, the later part of the second time duration is the last 8 minutes or the last 7 minutes, etc.

[0051] This invention identifies urination, normal defecation, and abnormal defecation by activating an excrement detection function after the user sits down and dynamically analyzing toilet behavior over a preset time period. For abnormal defecation due to difficulty in defecation, this invention further introduces a pre-rinse mode to assist the excretion process, optimizing the user experience and improving the pre-treatment effect before flushing.

[0052] This step also includes activating different cleaning modes for different abnormal bowel movements. Specifically, after the user performs the first abnormal bowel movement, when the user initiates a posterior wash, it is set to perform a certain number of posterior washes at a predetermined first interval. These "several" washes are two or more times, and each wash lasts less than a regular posterior wash. For example, the first interval is 2-4 seconds, and each wash is set to last 60%-80% of the regular wash time. A regular posterior wash refers to the posterior wash function activated under normal bowel movement conditions. The frequency and duration of posterior washes after the first abnormal bowel movement are set to be the same or different from the frequency and duration of posterior washes after the second abnormal bowel movement.

[0053] When a user engages in abnormal defecation behavior, this invention activates a differentiated cleaning mode for targeted treatment, adjusting the frequency and duration of posterior washing to meet the cleaning needs of abnormal defecation behavior.

[0054] When the user gets up, the toilet performs the following actions:

[0055] If the user urinates, a small flush is activated. If the user defecates normally or experiences a second abnormal bowel movement, a large flush is activated, which is a regular large flush (one flush). If the user experiences a first abnormal bowel movement, due to difficulty in defecation and potentially hardened, sticky stool, a regular large flush may not be effective. In this case, a corresponding first large flush mode is activated, which is designed for a stronger flushing effect. Specifically, the first large flush mode for the first abnormal bowel movement involves a small flush for pre-rinsing, followed by a large flush at a set second interval (4-6 seconds). This combination of pre-rinsing and the second large flush, along with the previous stool-assisting wash, effectively addresses the issue of hardened stool residue and reduces stool sticking to the sides of the container. In practical applications, the flushing frequency and the second interval can be adjusted as needed.

[0056] In this invention, after determining that the user has performed either the first or second abnormal defecation behavior and the toilet has finished flushing, the toilet also checks whether there is any residue on the toilet bowl wall. If so, it performs another flush. That is, the first abnormal defecation behavior executes the first strong flush mode, and the second abnormal defecation behavior executes the strong flush mode. After flushing, the toilet bowl wall is checked again for any residue. This process is repeated. If there is still residue after a set number of flushes, a warning is issued to prompt the user to intervene manually or check.

[0057] Furthermore, an infrared thermal imaging unit can be used to collect infrared thermal imaging data of the inner wall of the toilet bowl and compare it with the original infrared thermal imaging data of the inner wall. If they are inconsistent, there is residue. The original infrared thermal imaging data refers to the infrared thermal imaging data collected when the toilet bowl wall is clean and free of residue, serving as a standard reference value. At this time, the data reflects the thermal conductivity characteristics of the ceramic material. After use, if there is residue (especially hardened feces), due to the significant difference in thermal conductivity between ceramic and the material, it will cause abnormal local thermal radiation. The infrared sensor can identify these abnormal areas through temperature difference. For example, by comparing two imaging data, if the difference exceeds a preset threshold, it is determined that there is residue. The residue identified by this solution is mainly fecal residue, and to ensure more accurate identification, the area for residue detection is mainly the wall area above the water cover of the toilet bowl.

[0058] Based on this, see Figure 5 The present invention also proposes a toilet flushing control system for executing the above-mentioned toilet flushing control method, which includes the following modules:

[0059] The detection module, including a liquid detection unit and a moving object detection unit, is activated after the user sits down to detect urine and feces. The detection module may also include a seating sensor to detect whether the user is seated.

[0060] The user behavior judgment module is used to determine whether the user is performing urination, normal defecation, the first abnormal defecation behavior, or the second abnormal defecation behavior based on the information detected by the detection module.

[0061] The control module is used to control the detection module to start detecting urine and feces after the user sits down. If urine is detected first and the user does not leave the seat within a set first time period, the assisted washing mode is activated. After the user leaves the seat, the control module sends corresponding control commands to the flushing execution module based on the judgment result of the user behavior judgment module.

[0062] The flushing execution module is used to execute the corresponding flushing mode according to the control instructions of the control module: if the user performs urination, the small flush is activated; if the user performs normal defecation or the second abnormal defecation, the large flush is activated; if the user performs the first abnormal defecation, the corresponding first large flush mode is activated.

[0063] The liquid detection unit uses a capacitive sensor, which is located at the top of the toilet bowl with its sensing end tilted downwards. The sensing area of ​​the capacitive sensor is located above the water surface of the toilet bowl. (See [link]). Figure 2 and Figure 4At point C. The capacitive sensing sensor has an initial capacitance Cp between the sensing electrode and the ground. When liquid flows through the sensing area, a sensing capacitance Cf is generated. At this time, the capacitance on the sensing electrode is C = Cp + Cf. When the value of capacitance C exceeds a preset threshold (e.g., 5pF), it is determined that liquid has flowed. The specific threshold can be determined based on the length, width, and installation position of the sensing electrode. When a person urinates or defecates, it causes a change in the sensing capacitance on the sensing electrode. Liquids have good conductivity, resulting in a larger change, while solids have poor conductivity, resulting in a smaller change. Therefore, the magnitude of the change in sensing capacitance can distinguish between liquids and feces.

[0064] The moving object detection unit uses a proximity sensor, which is installed on top of the toilet bowl with its sensing end tilted downwards. The sensing area of ​​the proximity sensor is located above the water surface of the toilet bowl. (See [link]). Figure 3 and Figure 4 Point A. The proximity sensor can be an infrared proximity sensor, with a built-in infrared transmitter and receiver. When the infrared proximity sensor is working, the infrared transmitter emits infrared light. When an object passes through the sensing area, the infrared receiver receives the reflected infrared light, thus determining that an object has passed. When a user urinates, the infrared light can penetrate the liquid, so the infrared receiver receives no data or very weak data. When a user defecates, the infrared light is emitted in large quantities upon contact with the solid, so the infrared receiver can receive more data. Based on this principle, the presence of feces is determined.

[0065] Specifically, this invention combines data from a capacitive sensor and an infrared proximity sensor to comprehensively determine whether there is urine or feces in the sensing area. This includes: when the capacitive sensor detects liquid flow but the proximity sensor does not detect object movement, the detection module determines that urine has been detected; when the proximity sensor detects object movement but the capacitive sensor does not detect liquid flow, the detection module determines that feces have been detected. When both the capacitive sensor and the proximity sensor detect liquid flow, it is determined that both urine and feces have been detected.

[0066] The detection unit also includes an infrared thermal imaging unit, which is installed at a suitable position on top of the toilet, for example... Figure 4 Point B in the diagram is used to collect infrared thermal imaging data of the toilet bowl's inner wall and compare it with the original infrared thermal imaging data of the toilet bowl's inner wall. If they do not match, there is residual waste. In practical applications, the residual waste detection function of the infrared thermal imaging unit is set to activate after the user performs the first or second abnormal defecation behavior and the corresponding flushing mode is completed.

[0067] The working principle of the system of the present invention is as follows:

[0068] S1. After the user sits down, the detection module starts to detect the type of excrement. The liquid detection unit and the moving object detection unit work simultaneously. Urine is detected by a capacitive sensor and feces are detected by a proximity sensor. The user behavior judgment module makes the following judgments:

[0069] If the liquid detection unit detects urine first, it determines whether no feces are detected and whether the user has not left the seat within the first time period. If so, the user behavior judgment module determines that the user has performed the first abnormal defecation behavior, which may indicate abnormal defecation. The control module then activates the assisted defecation washing mode, performing several assisted defecation washings at set intervals (two or more times). Each assisted defecation washing session is shorter than the regular posterior washing time, and the assisted defecation washing mode stops after feces are detected. If no feces are detected and the user leaves the seat, it is determined that the user has performed normal urination behavior.

[0070] In the assisted bowel movement washing mode, the detection module continuously monitors whether feces are detected:

[0071] If feces are detected, the execution module stops the assisted defecation washing mode, the user behavior judgment module determines that the user has performed the first abnormal defecation behavior, and the control module triggers the corresponding first flushing mode according to the behavior type; if no feces are detected, the control module continues to start the assisted defecation washing mode according to the preset number of times until the set number of times is reached and then stops.

[0072] If, within the first time period, the liquid detection unit detects urine first, then feces, and the user has not left the seat, then the process proceeds to the step of determining whether the user has left the seat within the set second time period, further determining whether the user's defecation behavior is normal or abnormal.

[0073] After determining that the user has performed the second abnormal defecation behavior, considering that the user did not wash their buttocks in time to wipe their buttocks, which may cause the stool to become hard, the control module controls the start of the buttock washing and sets it to perform a number of buttock washings at a set third interval. The number of buttock washings is two or more times, and the time of each buttock washing is less than the normal buttock washing time.

[0074] After a user performs the first abnormal defecation behavior, when the user initiates a posterior wash, it is set to perform a certain number of posterior washes at a set first interval. These "several" posterior washes are two or more times, and each posterior wash lasts for less than the normal posterior wash time.

[0075] S2. After the user leaves their seat, the control module executes a flushing action based on the user's behavior and the module's output:

[0076] If the user behavior judgment module determines that the user is urinating, the execution module will initiate a urination process.

[0077] If the system determines that the user is performing normal defecation behavior or a second abnormal defecation behavior, the execution module will initiate a flush.

[0078] If the user is determined to have performed the first abnormal defecation behavior, the execution module will activate the corresponding first flush mode, which includes: first performing a small flush for pre-rinsing; and then performing a large flush after a set second interval.

[0079] For the first or second abnormal defecation behavior, the execution module continuously detects whether there is residual dirt on the toilet bowl wall through the infrared thermal imaging unit after initiating the flush. If dirt residue is detected, the execution module repeats the flush and checks again. If dirt remains after repeating the set number of times, the control module triggers the warning function to prompt the user to intervene manually or check.

[0080] This invention effectively solves problems such as residue and wall cling caused by prolonged toilet time or abnormal bowel movements by recognizing and dynamically responding to user toilet behavior, combined with excrement detection, time judgment, and multi-mode flushing logic. This improves cleaning efficiency and user experience. Differential processing for abnormal bowel behaviors (such as a assisted washing mode and an enhanced first flush mode) adapts to the needs of users in different physiological states, reducing resource waste while ensuring effective flushing. Infrared thermal imaging and multi-sensor collaborative detection of residue form a closed-loop control mechanism, further improving the system's accuracy in judging the cleaning status and avoiding insufficient or excessive flushing due to misjudgment, thus enhancing the toilet's intelligence level.

[0081] In this invention, the terms "first," "second," and "third," etc., are used only to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. The use of terms such as "upper," "lower," "left," "right," "front," and "rear" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings and is only for the convenience of describing the invention, not to indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the scope of protection of this invention. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0082] Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0083] The above are merely specific embodiments of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial modifications made to the present invention using this concept shall be considered as infringing upon the protection scope of the present invention.

Claims

1. A method for controlling the flushing of a toilet, characterized in that, Including the following: After the user sits down, the toilet performs the following judgment: If urine is detected first, it is determined whether no feces are detected and whether the user has not left the seat within the first time period. If so, the toilet is controlled to enter the defecation assistance washing mode, and the defecation assistance washing mode is stopped after feces are detected, and the user is determined to have performed the first abnormal defecation behavior; if no feces are detected and the user has left the seat, the user is determined to have performed normal urination behavior. If feces are detected first, it is determined whether the user leaves the seat during the set second time period. If yes, the user is determined to have performed normal defecation behavior. If no, it is determined again during the later part of the second time period whether feces are detected. If no, the user is determined to have performed a second abnormal defecation behavior. If yes, the user is determined to have performed normal defecation behavior. When the user gets up, the toilet performs the following actions: If the user urinates, a small flush is activated; if the user defecates normally or performs a second abnormal defecation, a large flush is activated; if the user performs a first abnormal defecation, the corresponding first large flush mode is activated.

2. The toilet flushing control method as described in claim 1, characterized in that, The specific method for assisting bowel movements is as follows: The program initiates a bowel movement assist wash and checks if feces are detected within the set third time period. If not, it initiates the wash again and checks if feces are detected within the set third time period. If no feces are detected after initiating the set number of bowel movement assist washes, the bowel movement assist wash mode is stopped.

3. The toilet flushing control method as described in claim 2, characterized in that, After the user performs the first abnormal defecation behavior, when the user starts the posterior wash, it is set to perform a number of posterior washes at a set first interval, with each posterior wash lasting less than the normal posterior wash time.

4. The toilet flushing control method as described in claim 1, characterized in that, The first flushing mode corresponding to the first abnormal defecation behavior refers to: first, starting a small flush for pre-rinsing, and then starting a large flush after a set second interval.

5. The toilet flushing control method as described in claim 1, characterized in that, After determining that the user has performed the second abnormal defecation behavior, the posterior wash is initiated and set to be performed several times at a set third interval, with each posterior wash lasting less than the normal posterior wash time.

6. The toilet flushing control method as described in claim 1, characterized in that, The first abnormal defecation behavior refers to the behavior where, after the user sits down, urine is detected first, no feces are detected within a set first time period and the user does not leave the seat, and feces are detected after entering the defecation assistance washing mode; the second abnormal defecation behavior refers to the behavior where, after the user sits down, feces are detected, the user does not leave the seat within a set second time period and no feces are detected again in the later part of the second time period.

7. The toilet flushing control method as described in claim 1, characterized in that, If, after the user performs either the first or second abnormal defecation behavior and the toilet has finished flushing, the toilet still detects residue on the toilet bowl wall, then the corresponding flushing mode is executed again, and the toilet bowl wall is checked again for residue after flushing. This process is repeated. If residue is still detected after the set number of flushing cycles, a warning is issued.

8. The toilet flushing control method as described in claim 7, characterized in that, Infrared thermal imaging data of the inner wall of the toilet bowl is collected using an infrared thermal imaging unit and compared with the original infrared thermal imaging data of the inner wall of the toilet bowl. If they are inconsistent, there is dirt residue.

9. A toilet flushing control system, characterized in that, include: The detection module includes a liquid detection unit and a moving object detection unit, which are used to detect urine and feces after the user sits down; The user behavior judgment module is used to determine whether the user is performing urination, normal defecation, the first abnormal defecation behavior, or the second abnormal defecation behavior based on the information detected by the detection module. The control module is used to control the detection module to start detecting urine and feces after the user sits down; if urine is detected first and the user does not leave the seat within a set first time period, the assisted washing mode is activated; and after the user leaves the seat, the corresponding control command is sent to the flushing execution module to control the operation based on the judgment result of the user behavior judgment module. The flushing execution module is used to execute the corresponding flushing mode according to the control command of the control module: if the user performs the act of urinating, then the small flush is activated; If the user performs normal defecation behavior or a second abnormal defecation behavior, then a large flush will be activated; If the user performs the first abnormal defecation behavior, the corresponding flushing mode will be activated.

10. A toilet flushing control system as described in claim 9, characterized in that, The liquid detection unit uses a capacitive sensor, which is located on the top of the toilet bowl with its sensing end tilted downwards. The sensing area of ​​the capacitive sensor is located above the water surface of the toilet bowl. The moving object detection unit uses a proximity sensor, which is also installed on the top of the toilet bowl with its sensing end tilted downwards. The sensing area of ​​the capacitive sensor is located above the water surface of the toilet bowl.

11. A toilet flushing control system as described in claim 10, characterized in that, When the capacitive sensor detects liquid flow but the proximity sensor does not detect object movement, the detection module determines that urine has been detected; when the proximity sensor detects object movement but the capacitive sensor does not detect liquid flow, the detection module determines that feces have been detected.

12. The toilet flushing control system as described in claim 10, characterized in that, The proximity sensor is an infrared sensor.

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