WO2023015685A1

WO2023015685A1 - Method and system for controlling automatic flushing of toilet, and toilet

Info

Publication number: WO2023015685A1
Application number: PCT/CN2021/120672
Authority: WO
Inventors: 林孝发; 林孝山; 李艺明; 黄海防; 于海峰
Original assignee: 九牧厨卫股份有限公司
Priority date: 2021-08-13
Filing date: 2021-09-26
Publication date: 2023-02-16
Also published as: CN113653140A

Abstract

A method and system for controlling automatic flushing of a toilet, and a toilet. The method comprises: using a human body sensor (2) to detect whether a user enters a preset first range and/or a preset second range; if the user enters the first range and does not enter the second range, then determining that a male urinates, and acquiring the stay duration of the user, and if the stay duration of the user satisfies a first preset condition, then determining that the male urinates and then leaves, and executing small-drainage flushing; and if the user enters the second range, then determining that the user takes a seat on a toilet for using the toilet, and acquiring the stay duration of the user, and if the stay duration of the user satisfies a second preset condition, then determining that the user takes a seat, urinates and then leaves, and executing small-drainage flushing, otherwise determining that the user takes a seat, defecates and then leaves, and executing large-drainage flushing. By means of the system, male urination, female urination, or male/female defecation behavior can be effectively determined, thereby reducing the occurrence of erroneous flushing, and conserving water resources.

Description

Toilet automatic flushing control method and system, and toilet

technical field

The invention relates to the technical field of toilet flush control, in particular to a toilet automatic flush control method and system and a toilet.

Background technique

With traditional toilets, users have to manually flush the water after using the toilet, which is inconvenient to use, especially for some old people and children who are not familiar with the flushing function. Water and excrement left in the toilet will affect the sanitation of the toilet. For this reason, many toilet automatic flushing control methods have appeared in the prior art. Among them, the more convenient methods include the following two, one of which is to use infrared human body sensing devices to detect whether or not to go to the toilet, and judge according to the time of going to the toilet Whether it is a defecation behavior or a urination behavior, perform a large-displacement flush when judging that it is a defecation behavior, and perform a small-displacement flush when judging that it is a urination behavior. The other is to use a microwave sensor to detect the range of the user. If the user is in the range of toileting, then obtain the length of time the user stays in the range of toileting, and judge whether it is a behavior of defecating or urinating according to the length of the staying time. When it is defecation behavior, perform large-displacement flushing, and when it is judged to be urinating behavior, perform small-displacement flushing. The above two toilet automatic flushing control methods are similar in principle, but both have the following disadvantages: when the user enters the toilet range, it is impossible to distinguish whether it is male urination, female urination or male defecation only based on the user's stay time, so it is impossible Accurately distinguish between urination and urination, which may easily cause false flushing. For example, according to the above-mentioned two automatic flushing control methods, a man standing in front of the toilet is deemed to have entered the toilet range. defecation behavior, the toilet will perform a large-displacement flush, but it is obviously judged that the male stands in front of the toilet for a long time (satisfied with the residence time of the defecation behavior) and it is judged that the defecation behavior is inaccurate, resulting in false flushing, resulting in Waste of water resources.

Contents of the invention

Aiming at the technical problems existing in the prior art, the present invention provides a toilet automatic flushing control method and system and a toilet, which can improve the accuracy of judging urinating and urinating behaviors, reduce the phenomenon of false flushing, and thereby reduce the waste of water resources .

The technical solution adopted by the present invention to solve the technical problem is: a toilet automatic flushing control method, which uses a human body sensor to detect whether the user enters the preset first range and/or the preset second range;

If the user enters the first range and does not enter the second range, it is determined that the male is urinating, and the length of time the user stays is obtained, and if the user’s staying time satisfies the first preset condition, it is determined that the male is urinating Then leave, and perform a small displacement flush;

If the user enters the second range, it is determined that the user is sitting on the toilet to use the toilet, and the duration of the user’s stay is obtained. If the duration of the user’s stay satisfies the second preset condition, it is determined that the user is sitting to urinate and then leaves, and execute Flush with a small displacement, otherwise it is determined that the user has left after sitting down to defecate, and flushes with a large displacement.

Further, the human body sensor is located behind the seating position of the toilet, and detects the distance between the user and the human body sensor, if the distance between the user and the human body sensor is less than or equal to the first preset distance D1 and greater than the second preset distance D1 The distance D2 means that the user enters the first range; if the distance between the user and the human body sensor is less than or equal to the second preset distance D2, the user enters the second range; the first preset distance D1 is greater than The second preset distance D2.

Further, the first preset distance D1 is the maximum distance between the user and the human body sensor when the user stands on the front side of the toilet to urinate, and the second preset distance D2 is the maximum distance between the user and the human body sensor when the user sits on the toilet to go to the toilet. Maximum distance between sensors.

Further, the human body sensor detects the distance between the user and the human body sensor, and the method of judging whether it is a male urinating or the user sits on the toilet according to the distance includes the following steps:

Judging whether the human body sensor detects that the distance between the user and the human body sensor is less than or equal to the first preset distance D1; if so, it is determined that the user has entered the effective sensing area of the human body sensor, and continues to detect;

It is judged whether the human body sensor detects whether the distance between the user and the human body sensor is less than or equal to the first preset distance D1 and greater than the second preset distance D2. If so, it is determined that the male is urinating;

Further, the first preset condition is that the duration of the user's stay is greater than or equal to the first preset duration T1, or the first preset condition is that the duration of the user's stay is within the preset time range for men to urinate; The second preset condition is that the duration of the user's stay is less than or equal to the second preset duration T2, or the second preset condition is that the duration of the user's stay is within the preset time range for women to urinate.

Further, when it is determined that a male is urinating, obtaining the duration of the user's stay includes the following steps:

record the time t1 when the user enters the first range;

record the time t2 when the user leaves the second range;

Calculate t2-t1 to get the length of time the user stays △t1;

When it is determined that the user is sitting on the toilet to go to the toilet, obtaining the duration of the user's stay includes the following steps:

record the time t3 when the user enters the second range;

record the time t4 when the user leaves the second range;

Calculate t4-t3 to get the duration of the user's stay △t2.

The present invention also provides an automatic flushing control system for a toilet, which includes a human body sensor, a main control module and a flushing module. The human body sensor and the flushing module are respectively electrically connected to the main control module. When the user enters the preset first range and does not enter the preset second range, it is judged as a male urination, and according to whether the length of time the user stays in the first range satisfies the first preset condition to control the impulse Whether the water module performs small-displacement flushing; the main control module determines that the user is sitting on the toilet when the human body sensor detects that the user enters the second preset range, and according to the user staying in the second range Whether the duration of time satisfies the second preset condition to control the flushing module to perform flushing with small displacement or flushing with large displacement.

The present invention further provides a toilet, including the toilet automatic flushing control system as described in the present invention.

The present invention has the following beneficial effects:

1. Compared with the prior art, the present invention can effectively judge whether it is male urination, female urination or male/female defecation behavior, thereby improving the accuracy of judging urination and urination behaviors, reducing false flushing, and saving water resources.

2. The human body sensor is located behind the seat of the toilet and detects the distance between the user and the human body sensor. If the distance between the user and the human body sensor is less than or equal to the first preset distance D1 and greater than the second preset distance D2, the user enters the first range; if the distance between the user and the human body sensor is less than or equal to the second preset distance D2, the user enters the second range, so that the selection of the human body sensor is wider and more It is convenient, and the installation is simpler, and the number of the human body sensor can be only one, thereby reducing the cost.

3. The human body sensor is a millimeter wave sensor, which can improve the accurate detection of the user's distance, avoid the excessive detection blind zone and affect the experience, and the installation does not need to open windows and drill holes on the ceramic body of the toilet, reducing the difficulty of product design and development. And it can block the false interference signal caused by turning the toilet cover and turning the seat ring through the program algorithm.

The present invention will be described in further detail below with reference to the accompanying drawings and embodiments; however, a toilet automatic flushing control method and system and toilet of the present invention are not limited to the embodiments.

Description of drawings

Fig. 1 is the schematic diagram of the three-dimensional structure of the toilet when the human body sensor is installed in the toilet water tank (showing the sensing range);

Fig. 2 is a side view of the toilet when the human body sensor is installed in the toilet tank (showing the sensing range, the first preset distance, and the second preset distance);

Fig. 3 is a partial sectional view of the toilet when the human body sensor is installed in the toilet water tank;

Fig. 4 is a partially enlarged schematic diagram of Fig. 3;

Fig. 5 is a side view (partial section) of the toilet when the human body sensor is installed on the rear wall of the toilet;

Fig. 6 is a partially enlarged schematic diagram of Fig. 5;

Fig. 7 is a flow chart of the method of the present invention;

Fig. 8 is a functional block diagram of the system of the present invention;

Among them, 1. Main control core processor MCU, 2. Millimeter wave sensor, 3. Drain valve drive circuit, 4. Drain valve, 41. Water inlet pipe, 42. Water outlet pipe, 5. Power adapter, 6. Water tank, 61 , front side wall, 62, rear side wall, 7, sensing range, 8, screw, 9, wall.

Detailed ways

In the present invention, the terms "first" and "second" are only used to distinguish similar objects, not to describe a specific sequence or sequence, and cannot be understood as indicating or implying relative importance. In the description, the orientation or positional relationship indicated by "front" and "rear" is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention, not to indicate or imply that the referred device must Having a particular orientation, being constructed and operating in a particular orientation, and therefore not to be construed as limiting the scope of the invention. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.

For an embodiment, please refer to Fig. 1-Fig. 8, a method for controlling automatic flushing of a toilet according to the present invention,

Use a human body sensor to detect whether the user enters the preset first range and/or the preset second range;

If the user enters the first range, it is determined that the male is urinating, and the length of time the user stays is obtained. If the user’s staying time satisfies the first preset condition, it is determined that the male is leaving after urinating, and a small displacement flush is performed. ;

The first range and the second range refer to preset area ranges respectively, and the two may or may not overlap. In the present invention, when the user enters the first range and does not enter the second range, it is first judged that it is male urine, and then judges whether to perform small-displacement flushing according to the length of time the user stays, which enables the present invention to Accurately distinguish male urination behavior, and avoid the phenomenon of mistakenly performing large-displacement flushing under male urination behavior. In the present invention, when the user enters the second range, it is first determined that the user is sitting on the toilet to go to the toilet (including the situation that the user is sitting to defecate or a woman is sitting to urinate), and then according to the duration of the user's sitting and going to the toilet, choose to perform large-displacement flushing or toilet flushing. Small-displacement flushing, which enables the present invention to accurately distinguish the behavior of users (including men and women) sitting and defecating, and women sitting and urinating, and then perform large-displacement flushing or small-displacement flushing, thereby improving user experience , to avoid false flushing and save water resources.

In this embodiment, the human body sensor is located behind the seating position of the toilet and detects the distance between the user and the human body sensor. If the distance between the user and the human body sensor is less than or equal to the first preset distance D1 and greater than the second The preset distance D2 means that the user enters the first range; if the distance between the user and the human body sensor is less than or equal to the second preset distance D2, the user enters the second range; the first preset distance D1 is greater than the second preset distance D2. That is, the first range/second range is characterized by detecting the distance between the human body sensor and the user. In this way, the selection of the human body sensor is wider, more convenient, and the installation is easier, and the number of the human body sensor is one. Yes, reduce costs.

In this embodiment, the human body sensor is specifically an FMCW millimeter wave sensor. Because the millimeter-wave sensor can penetrate the ceramic body for detection, the water tank 6 of the toilet does not need to open windows and drill holes, which reduces the difficulty of product design and development, and can shield the error caused by turning the toilet cover and seat ring through the program algorithm. Jamming signal. In addition, compared with infrared sensing devices and microwave sensors, millimeter wave sensors have the following characteristics: 1. Millimeter wave sensors can detect the precise distance between the human body and the sensor, and the detection accuracy is high, and the detection accuracy can reach within 5cm, while infrared Induction devices and microwave sensors can only detect whether there is a human body within the sensing range, but cannot detect the distance between the human body and the sensor within the sensing range; 2. The millimeter wave sensor does not exist. Infrared sensing devices are easily affected by various heat sources, light sources, Radio frequency interference and other issues.

In this embodiment, the human body sensor (that is, the millimeter wave sensor) can be installed on the toilet or the wall behind the toilet, and its sensing probe faces the front of the toilet. For a toilet with a water tank, the human body sensor (that is, a millimeter wave sensor) can be installed in the water tank of the toilet. Specifically, as shown in Figures 1-4, the human body sensor (that is, a millimeter wave sensor) device 2) is fixed on the front side wall 61 of the water tank 6 of the toilet (or, also can be the rear side wall of the water tank): the human body sensor 2 includes a sensor chip 21, a rubber sleeve 22 and a shell 23, and the sensor chip 21 Set in the rubber sleeve 22, the rubber sleeve 22 is sleeved in the shell 23, the shell 23 is used to control the drain valve 4 for flushing in the water tank (the drain valve is specifically a solenoid valve, and its water inlet end is connected with a water inlet pipe 41, its The outlet end is connected with the outlet pipe 42 for providing flushing water to the urinal of the toilet, and adopts some screws 8 to be locked on the front side wall 61 of the water tank. In addition, the human body sensor can also be fixed on the wall at the rear side of the toilet. Since the toilet has a water tank 6, in order not to be blocked by the water tank 6, the human body sensor (that is, the millimeter wave sensor 2) can be arranged on the wall of the toilet. In the water tank 6, a number of screws 8 are used to pass through the shell 23 of the millimeter-wave sensor and the rear side wall 62 of the water tank to be locked on the wall 9, as shown in Figures 5 and 6. At this time, the The drain valve 4 is fixed together with the housing 23 of the millimeter wave sensor. For the smart toilet, since the smart toilet generally does not have a water tank, the human body sensor (that is, the millimeter wave sensor) can be directly installed on the wall behind the smart toilet.

In this embodiment, the sensing range 7 of the human body sensor (that is, the millimeter wave sensor) includes the first range and the second range, as shown in Fig. 1 and Fig. 2 . The length of the first range in the front-to-back direction of the toilet, and the distance B indicates the length of the second range in the front-to-back direction of the toilet. The first preset distance D1 is the maximum distance between the user and the human body sensor when the user stands in front of the toilet to urinate, and the second preset distance D2 is the distance between the user and the human body sensor when the user sits on the toilet to go to the toilet. The maximum distance between (that is, distance B). Specifically, D1=70cm, but not limited thereto, it can be set or adjusted according to the actual situation of the distance between the man and the human body sensor (ie the millimeter wave sensor) when the man stands in front of the toilet to urinate. D2=35cm, but not limited thereto, it can be set or adjusted according to the actual situation of the distance between the back of the human body and the human body sensor (ie millimeter wave sensor) when the human body sits on the toilet to go to the toilet. When the distance between the user and the human body sensor is less than or equal to the first preset distance D1 and greater than the second preset distance D2, it means that the user enters the first range A sensed by the millimeter wave sensor. When the user and the human body sensor The distance is less than or equal to the second preset distance D2, indicating that it is used to enter the second range B sensed by the millimeter wave sensor.

In this embodiment, the first preset condition is that the duration of the user’s stay is greater than or equal to the first preset duration T1, and the second preset condition is that the duration of the user’s stay is less than or equal to the second preset duration T2, so The first preset duration T1 is shorter than the second preset duration T2. The first preset duration T1 can be set to a number of seconds, for example, it can be set to a number of seconds below 10 seconds or below 5 seconds, specifically, it can be set to 2 seconds, etc. In this way, the user can only pass through the first range A The case of no stay is excluded. The second preset duration T2 can be set as the maximum duration required for the user to urinate while sitting, such as 30 seconds, etc., but it is not limited thereto, and can be set or adjusted according to the specific duration of urinating for women. In other embodiments, the first preset condition can be set as the user stays within the preset male urination time range, and the second preset condition is that the user stays within the preset female urination time range. Within the time range; for example, the time range for men to urinate can be set to 10-30 seconds, and the time range for women to urinate, for example, can be set to 15-30 seconds, but it is not limited to this, and can be based on the reasonable range of the specific duration of male/female urination Make settings or adjustments.

In this embodiment, the human body sensor detects the distance between the user and the human body sensor, and the method of judging whether it is a male urinating or the user sits on the toilet according to the distance includes the following steps:

In this embodiment, when it is determined that a male is urinating, obtaining the duration of the user's stay includes the following steps:

Record the time t1 when the user enters the sensing range of the human body sensor;

Record the time t2 when the user leaves the sensing range of the human body sensor;

Calculate t2-t1 to get the length of time the user stays △t1;

Record the time t3 when the user enters the sensing range of the human body sensor;

Record the time t4 when the user leaves the sensing range of the human body sensor;

Calculate t4-t3 to get the duration of the user's stay △t2.

A method for controlling automatic flushing of a toilet according to the present invention, its detailed method flow is shown in Figure 7, including the following steps:

S1, start;

S2. After power-on, the distance of the human body target is continuously detected to be S (that is, the distance between the user and the human body sensor);

S3, judging whether S is less than or equal to the first preset distance D1 (setting D1=70cm), if so, execute step S4, otherwise return to step S2;

S4. Judging that the human body has entered the effective sensing area, and continuing to detect;

S5. Judging that S is less than or equal to the first preset distance D1 and less than the second preset distance D2 (setting D2=35cm), if so, execute step S6, otherwise execute step S12;

S6. It is determined that the male is urinating in the toilet, record time t1, and continue to monitor the human target until the human target leaves, record time t2;

S7, judging whether t2-t1 is greater than or equal to the first preset duration T1 (setting T1=2s), if so, execute step S8, otherwise execute step S10;

S8, judging that the male leaves after urinating, and performs the function of flushing with small displacement;

S9, end;

S10, judging invalid induction;

S11, end;

S12. It is determined that it is male defecation, female defecation or urination (that is, the user sits on the toilet to go to the toilet), record time t3, and continue to monitor the human target until the human target leaves, record time t4;

S13. Determine whether t4-t3 is less than or equal to the second preset duration T2 (set T2=30s), if so, execute step S14, otherwise execute step S16;

S14. Determine that the woman leaves after urinating, and perform the function of flushing with a small displacement;

S15, end;

S16. It is determined that the male or female leaves after defecating, and performs the function of flushing with a large amount of water;

S17, end.

Please refer to Fig. 1-Fig. 8, a kind of toilet automatic flushing control system of the present invention, comprises human body sensor, main control module, flushing water module, human body sensor, flushing water module are respectively electrically connected with the main control module, When the human body sensor detects that the user enters the preset first range, the main control module determines that it is a male urination, and controls whether the flushing module performs small-displacement flushing according to whether the length of time the user stays meets the first preset condition ; When the main control module detects that the user enters the preset second range by the human body sensor, it determines that the user is sitting on the toilet to go to the toilet, and controls the flushing module to perform small Displacement flush or high displacement flush. When the user enters the first range, the present invention first judges that it is a male urination, and then judges whether to perform small-displacement flushing according to the length of time the user stays, which enables the present invention to accurately distinguish male urination behaviors and avoid occurrence The phenomenon of mistakenly performing large-volume flushing under male urination behavior. In the present invention, when the user enters the second range, it is first determined that the user is sitting on the toilet to go to the toilet (including the situation that the user is sitting to defecate or a woman is sitting to urinate), and then according to the duration of the user's sitting and going to the toilet, choose to perform large-displacement flushing or toilet flushing. Small-displacement flushing, which enables the present invention to accurately distinguish the behavior of users (including men and women) sitting and defecating, and women sitting and urinating, and then perform large-displacement flushing or small-displacement flushing, thereby improving user experience , to avoid false flushing and save water resources.

In this embodiment, the human body sensor is located behind the seating position of the toilet and detects the distance between the user and the human body sensor. If the distance between the user and the human body sensor is less than or equal to the first preset distance D1 and greater than the second The preset distance D2 means that the user enters the first range; if the distance between the user and the human body sensor is less than or equal to the second preset distance D2, the user enters the second range; the first preset distance D1 is greater than the second preset distance D2. The first preset distance D1 is the maximum distance between the user and the human body sensor when the user stands on the front side of the toilet to urinate; the second preset distance D2 is the distance between the user and the human body sensor when the user sits on the toilet to go to the toilet. the maximum distance between. Specifically, D1=70cm, but not limited thereto, it can be set or adjusted according to the actual situation of the distance between the male and the human body sensor when the male stands in front of the toilet to urinate. D2=35cm, but not limited thereto, it can be set or adjusted according to the actual situation of the distance between the back of the human body and the human body sensor when the human body sits on the toilet to go to the toilet. When the distance between the user and the human body sensor is less than or equal to the first preset distance D1 and greater than the second preset distance D2, it means that the user enters the first range A sensed by the millimeter wave sensor. When the user and the human body sensor The distance is less than or equal to the second preset distance D2, indicating that it is used to enter the second range B sensed by the millimeter wave sensor.

In this embodiment, the human body sensor is specifically an FMCW millimeter wave sensor 2, which can be installed on the toilet or the wall behind the toilet, and its sensing probe faces the front of the toilet. Specifically, for a toilet with a water tank, the human body sensor (ie, the millimeter wave sensor 2) can be installed in the water tank 6 of the toilet, and fixed to the front side wall 61 of the water tank of the toilet (as shown in Fig. 3 and Fig. 4), or, be fixed on the rear side wall of the toilet water tank, perhaps, be attached to the rear side wall of the toilet water tank, but use the wall 9 on the rear side of the toilet as a support carrier, as shown in Figures 5 and 6. For the smart toilet, the human body sensor (that is, the millimeter wave sensor) can be directly installed on the wall behind the smart toilet. Since the millimeter-wave sensor 2 can penetrate the ceramic body for detection, the water tank 6 of the toilet does not need to open windows and drill holes, which reduces the difficulty of product design and development, and can shield the toilet from flipping the top cover and seat ring through the program algorithm. false interference signal.

In this embodiment, the main control module is a main control core processor MCU1 with time recording function and/or timing function, which is connected with a power adapter 5; the flushing module includes a drain valve 4 and a drain valve drive circuit 3 , The drain valve driving circuit 4 is electrically connected to the drain valve 3 and the main control module (ie, the main control core processor MCU1). The drain valve 4 is specifically a solenoid valve.

In this embodiment, the first preset condition is that the duration of the user’s stay is greater than or equal to the first preset duration T1, and the second preset condition is that the duration of the user’s stay is less than or equal to the second preset duration T2, so The first preset duration T1 is shorter than the second preset duration T2. The first preset duration T1 can be set to a number of seconds, for example, it can be set to a number of seconds below 10 seconds or below 5 seconds, specifically, it can be set to 2 seconds, etc. In this way, the user can only pass through the first range A The case of no stay is excluded. The second preset duration T2 can be set as the maximum duration required for the user to urinate while sitting, such as 30 seconds, etc., but it is not limited thereto, and can be set or adjusted according to the specific duration of urinating for women. In other embodiments, the first preset condition can be set as the user stays within the preset male urination time range, and the second preset condition can be that the user stays within the preset female urination time range. within the time range; the time range for men to urinate can be set to 10-30 seconds, for example, and the time range for women to urinate can be set to 15-30 seconds, but it is not limited to this, and it can be reasonable according to the specific duration of male/female urination range to set or adjust.

For an automatic flushing control system of the present invention, its working process can be referred to the above-mentioned method process of the present invention, and will not be repeated here.

Referring to Fig. 1-Fig. 8, a toilet according to the present invention includes the automatic flushing control system of the present invention as described above.

A toilet automatic flushing control method and system and the toilet according to the present invention use a human body sensor to detect whether the user enters the preset first range or the preset second range, and when the user enters the first range When the user enters the second range, it is determined that the user focuses on the toilet to go to the toilet, and it is determined whether the male leaves after urinating according to the length of time the user stays in the first range or the second range Or the user leaves after sitting to urinate or the user leaves after sitting and defecating, and controls the execution of corresponding large-discharge flushing or small-displacement flushing according to the determined specific toilet behavior. Therefore, compared with the prior art, the present invention can The effective judgment is male urination, female urination, or male/female defecation behavior, thereby improving the accuracy of judging the behavior of urinating and urinating, reducing the phenomenon of false flushing, and saving water resources.

A toilet automatic flushing control method and system of the present invention, and the toilet, the unrelated parts are the same as the prior art or can be realized by using the prior art.

The above embodiments are only used to further illustrate a kind of toilet automatic flushing control method and system and toilet of the present invention, but the present invention is not limited to the embodiments, any simple modification made to the above embodiments according to the technical essence of the present invention , equivalent changes and modifications all fall within the protection scope of the technical solution of the present invention.

Industrial Applicability

The invention discloses a toilet automatic flushing control method and system and a toilet. The method uses a human body sensor to detect whether the user enters the preset first range and/or the preset second range; if the user enters the preset range If the user stays within the first range and does not enter the second range, it is determined that the male is urinating, and the user’s staying time is obtained. If the user’s staying time satisfies the first preset condition, it is determined that the male is leaving after urinating, and Perform small-displacement flushing; if the user enters the second range, it is determined that the user is sitting on the toilet to go to the toilet, and the length of time the user stays is obtained, and if the length of time the user stays meets the second preset condition, it is determined that the user is If the user sits to urinate and leaves, perform a small-displacement flush; otherwise, it is determined that the user leaves after sitting to defecate, and performs a large-displacement flush. The invention can effectively judge whether it is male urination, female urination or male/female defecation behavior, thereby reducing false flushing, saving water resources, and having industrial applicability.

Claims

A toilet automatic flushing control method, characterized in that:

Use a human body sensor to detect whether the user enters the preset first range and/or the preset second range;

If the user enters the first range and does not enter the second range, it is determined that the male is urinating, and the length of time the user stays is obtained. If the user’s staying time satisfies the first preset condition, it is determined that the male is urinating Then leave, and perform a small displacement flush;

If the user enters the second range, it is determined that the user is sitting on the toilet to go to the toilet, and the duration of the user’s stay is obtained. If the duration of the user’s stay satisfies the second preset condition, it is determined that the user is sitting to urinate and then leaves, and execute Flush with small displacement, otherwise it is judged that the user has left after sitting down to defecate, and flushes with large displacement.
The method for controlling automatic flushing of a toilet according to claim 1, wherein the human body sensor is located behind the seating position of the toilet, and detects the distance between the user and the human body sensor, and if the distance between the user and the human body sensor is less than Or equal to the first preset distance D1, and greater than the second preset distance D2, the user enters the first range; if the distance between the user and the human sensor is less than or equal to the second preset distance D2, the user enters the range. Within the second range; the first preset distance D1 is greater than the second preset distance D2.
The automatic flushing control method of a toilet according to claim 1 or 2, characterized in that: the human body sensor is a millimeter wave sensor; the human body sensor is installed on the toilet or the wall behind the toilet, and its sense The probe faces the front of the toilet.
The method for controlling automatic flushing of a toilet according to claim 2, wherein the first preset distance D1 is the maximum distance between the user and the human body sensor when the user stands on the front side of the toilet to urinate, and the second The preset distance D2 is the maximum distance between the user and the human body sensor when the user sits on the toilet to use the toilet.
The automatic flushing control method of a toilet according to claim 2, wherein the human body sensor detects the distance between the user and the human body sensor, and the method of judging whether it is a male urinating or the user sits on the toilet according to the distance includes: The following steps:

Judging whether the human body sensor detects that the distance between the user and the human body sensor is less than or equal to the first preset distance D1; if so, it is determined that the user has entered the effective sensing area of the human body sensor, and continues to detect;

It is judged whether the human body sensor detects whether the distance between the user and the human body sensor is less than or equal to the first preset distance D1 and greater than the second preset distance D2. If so, it is determined that the male is urinating;
The method for controlling automatic flushing of a toilet according to claim 1, characterized in that: the first preset condition is that the user stays longer than or equal to the first preset duration T1, or the first preset condition is The duration of the user's stay is within the preset time range for men to urinate; the second preset condition is that the duration of the user's stay is less than or equal to the second preset duration T2, or the second preset condition is that the user stays The duration is within the preset time range for women to urinate.
The method for controlling automatic flushing of a toilet according to claim 1, wherein when it is determined that the male is urinating, obtaining the duration of the user's stay includes the following steps:

record the time t1 when the user enters the first range;

record the time t2 when the user leaves the first range;

Calculate t2-t1 to get the length of time the user stays △t1;

When it is determined that the user is sitting on the toilet to go to the toilet, obtaining the duration of the user's stay includes the following steps:

record the time t3 when the user enters the second range;

record the time t4 when the user leaves the second range;

Calculate t4-t3 to get the duration of the user's stay △t2.
An automatic flushing control system for a toilet, characterized in that it includes a human body sensor, a main control module and a flushing module, the human body sensor and the flushing module are respectively electrically connected to the main control module, and the main control module detects When the user enters the preset first range and does not enter the preset second range, it is determined that the male is urinating, and the impulse is controlled according to whether the user stays in the first range to meet the first preset condition. Whether the water module performs small-displacement flushing; the main control module determines that the user is sitting on the toilet when the human body sensor detects that the user enters the second preset range, and according to the user staying in the second range Whether the duration of time satisfies the second preset condition is used to control the flushing module to perform small-displacement flushing or large-displacement flushing.
The toilet automatic flushing control system according to claim 8, characterized in that: the human body sensor is located behind the seating position of the toilet, and detects the distance between the user and the human body sensor, if the distance between the user and the human body sensor is less than Or equal to the first preset distance D1, and greater than the second preset distance D2, the user enters the first range; if the distance between the user and the human sensor is less than or equal to the second preset distance D2, the user enters the range. Within the second range; the first preset distance D1 is greater than the second preset distance D2.
The toilet automatic flushing control system according to claim 8 or 9, characterized in that: the human body sensor is a millimeter wave sensor;

The human body sensor is installed on the toilet or the wall behind the toilet, and its sensing probe faces the front of the toilet;

The main control module is a main control core processor MCU with time recording function and/or timing function; the flushing module includes a drain valve and a drain valve driving circuit, a drain valve driving circuit, a drain valve and the main control module electrical connection;
The toilet automatic flushing control system according to claim 8 or 9, characterized in that: the first preset condition is that the user stays longer than or equal to the first preset duration T1, or the first preset The condition is that the duration of the user's stay is within the preset time range for men to urinate; the second preset condition is that the duration of the user's stay is less than or equal to the second preset duration T2, or the second preset condition is that the user The duration of the stay is within the preset time range for women to urinate.
The toilet automatic flushing control system according to claim 9, characterized in that: the first preset distance D1 is the maximum distance between the user and the human body sensor when the user stands on the front side of the toilet to urinate; The preset distance D2 is the maximum distance between the user and the human body sensor when the user sits on the toilet to use the toilet.
A toilet, characterized by comprising the automatic flushing control system of the toilet according to any one of claims 8-12.