CN111677068B - Toilet flushing control system and method and water-saving toilet - Google Patents
Toilet flushing control system and method and water-saving toilet Download PDFInfo
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- CN111677068B CN111677068B CN202010531448.1A CN202010531448A CN111677068B CN 111677068 B CN111677068 B CN 111677068B CN 202010531448 A CN202010531448 A CN 202010531448A CN 111677068 B CN111677068 B CN 111677068B
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- flushing
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- 238000011010 flushing procedure Methods 0.000 title claims abstract description 91
- 238000000034 method Methods 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 135
- 239000007921 spray Substances 0.000 claims description 30
- 230000008859 change Effects 0.000 claims description 29
- 238000007789 sealing Methods 0.000 claims description 13
- 238000005507 spraying Methods 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 10
- 239000007788 liquid Substances 0.000 description 10
- 210000002700 urine Anatomy 0.000 description 10
- 230000006399 behavior Effects 0.000 description 7
- 239000005457 ice water Substances 0.000 description 6
- 239000002699 waste material Substances 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 241001122767 Theaceae Species 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 241000700605 Viruses Species 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000027939 micturition Effects 0.000 description 2
- 239000008267 milk Substances 0.000 description 2
- 210000004080 milk Anatomy 0.000 description 2
- 235000013336 milk Nutrition 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000003287 bathing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000034002 defecation rhythm Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03D5/00—Special constructions of flushing devices, e.g. closed flushing system
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03D11/00—Other component parts of water-closets, e.g. noise-reducing means in the flushing system, flushing pipes mounted in the bowl, seals for the bowl outlet, devices preventing overflow of the bowl contents; devices forming a water seal in the bowl after flushing, devices eliminating obstructions in the bowl outlet or preventing backflow of water and excrements from the waterpipe
- E03D11/02—Water-closet bowls ; Bowls with a double odour seal optionally with provisions for a good siphonic action; siphons as part of the bowl
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03D5/00—Special constructions of flushing devices, e.g. closed flushing system
- E03D5/10—Special constructions of flushing devices, e.g. closed flushing system operated electrically, e.g. by a photo-cell; also combined with devices for opening or closing shutters in the bowl outlet and/or with devices for raising/or lowering seat and cover and/or for swiveling the bowl
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03D5/00—Special constructions of flushing devices, e.g. closed flushing system
- E03D5/10—Special constructions of flushing devices, e.g. closed flushing system operated electrically, e.g. by a photo-cell; also combined with devices for opening or closing shutters in the bowl outlet and/or with devices for raising/or lowering seat and cover and/or for swiveling the bowl
- E03D5/105—Special constructions of flushing devices, e.g. closed flushing system operated electrically, e.g. by a photo-cell; also combined with devices for opening or closing shutters in the bowl outlet and/or with devices for raising/or lowering seat and cover and/or for swiveling the bowl touchless, e.g. using sensors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/40—Protecting water resources
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Aviation & Aerospace Engineering (AREA)
- Sanitary Device For Flush Toilet (AREA)
Abstract
The invention discloses a toilet flushing control system and a flushing control method thereof, wherein the system comprises a controller and a turbidity sensor for detecting the turbidity of a water seal of a toilet; the turbidity sensor includes a light emitting portion, a first light receiving portion, and a second light receiving portion; the first light receiving part and the second light receiving part are used for receiving the light emitted and reflected by the light emitting part, are symmetrically arranged, and take the central axis of the light emitting part as a symmetry axis; the first turbidity detected by the first light receiving part and the second turbidity detected by the second light receiving part are respectively transmitted to the controller, and when the current first turbidity and the second turbidity are larger than a set threshold value, the controller outputs a control signal for flushing a large amount of water or a control signal for flushing a small amount of water according to whether the current first turbidity and the second turbidity deviate or not. The invention can distinguish large water volume flushing and small water volume flushing, thereby achieving the purpose of water saving.
Description
Technical Field
The invention relates to the field of bathrooms, in particular to a toilet flushing control system and method and a water-saving toilet.
Background
Along with the popularization of intelligent toilets, the intelligent toilets have more and more functions, such as hip washing function, gynecological washing function, drying function, automatic flushing function and the like. One common implementation form of the automatic flushing function is to detect the turbidity of the water sealed by the toilet bowl by using a turbidity sensor, and control whether the toilet bowl is flushed or not according to the turbidity. The light emitting part and the light receiving part of the turbidity sensor in the prior art are arranged on the opposite surfaces, and the change of the turbidity of the liquid is judged by the change of the intensity of the light received by the light receiving part. Therefore, the turbidity sensor can only judge the turbidity of the liquid, and cannot judge whether the liquid contains particles (namely, cannot judge whether the liquid is urine or the turbidity change caused by other particles), so that the toilet cannot distinguish large-water-volume flushing from small-water-volume flushing according to the urine and the urine behaviors. In order to completely flush the stool or other solid matter discharged into the toilet, a large water volume flushing method is required, and the liquid (such as urine, tea water, milk and the like) discharged into the toilet is flushed by a large water volume flushing method, which obviously causes waste of water resources. Thus, the turbidity sensor employed in the prior art results in a toilet that does not conserve water.
Disclosure of Invention
Aiming at the technical problems existing in the prior art, the invention provides a toilet flushing control system and method and a water-saving toilet.
The technical scheme adopted for solving the technical problems is as follows: a toilet flushing control system comprises a controller and a turbidity sensor for detecting the turbidity of a water seal of a toilet; the turbidity sensor comprises a light-emitting part, a first light-receiving part and a second light-receiving part, wherein the light-emitting part is used for emitting light to a water sealing area of the closestool, the first light-receiving part and the second light-receiving part are used for receiving the light emitted and reflected by the light-emitting part, and the first light-receiving part and the second light-receiving part are symmetrically arranged and take the central axis of the light-emitting part as a symmetry axis; the first turbidity detected by the first light receiving part and the second turbidity detected by the second light receiving part are respectively transmitted to the controller, and when the current first turbidity and the second turbidity are larger than a set threshold value, the controller outputs a control signal for flushing a large amount of water or a control signal for flushing a small amount of water according to whether the current first turbidity and the second turbidity deviate or not.
Further, the turbidity sensor is positioned at the jet orifice at the bottom of the urinal of the toilet.
Further, the device also comprises a fixed body, wherein the turbidity sensor is arranged on the fixed body, and the fixed body is arranged on the jet orifice at the bottom of the toilet bowl;
the fixed body is a spray head, the spray head is provided with a containing part, a pipe joint, a water spraying hole and a light transmission area which can not be used for water, the water spraying hole is communicated with the pipe joint, and the water spraying hole and the light transmission area are positioned on the same side of the spray head; the turbidity sensor is arranged on the accommodating part, and the light-emitting part of the turbidity sensor faces the light-transmitting area; the spray nozzle is connected with the spray opening in a sealing way, and the water spray opening and the light-transmitting area of the spray nozzle face the water seal area of the closestool.
Further, the water-sealing device also comprises a temperature sensor for detecting the water-sealing temperature of the closestool, and the output of the temperature sensor is connected to the controller so that the controller can control whether to flush or not in combination with the water-sealing temperature.
Further, the temperature sensor is integrated with the turbidity sensor, or the temperature sensor is separated from the turbidity sensor and is installed at the same position.
Further, the device also comprises a sitting sensor for detecting whether a person is sitting, and the output of the sitting sensor is connected to the controller so that the controller can control the flushing time in combination with the sitting information.
Further, the water closet also comprises an alarm module, wherein the output of the controller is connected to the alarm module so as to send out an alarm signal when the first turbidity and the second turbidity still have deviation after the water closet flushes with large water quantity.
Further, the device also comprises a flushing actuating mechanism, and the output of the controller is connected to the flushing actuating mechanism.
Further, the first light receiving portion and the second light receiving portion are located on a side where the light emitting surface of the light emitting portion is located, and the light receiving surface of the first light receiving portion is opposite to the light receiving surface of the second light receiving portion.
Further, the luminous portion includes infrared transmitting tube, first light receiving portion includes first infrared receiving tube, second light receiving portion includes the infrared receiving tube of second, infrared transmitting tube, first infrared receiving tube and the parallel connection of second infrared receiving tube, is connected with divider resistor on the parallel branch that infrared transmitting tube is located, is connected with first electric capacity on the parallel branch that first infrared receiving tube is located, is connected with the second electric capacity on the parallel branch that second infrared receiving tube is located.
The invention further provides a toilet flushing control method, which adopts a turbidity sensor to detect the water sealing turbidity of the toilet, and obtains a first turbidity and a second turbidity, and the method comprises the following steps:
1) Acquiring current first turbidity and second turbidity;
2) Judging whether the current first turbidity and second turbidity are greater than a set threshold value, if so, executing the step 3), otherwise, returning to the step 1);
3) And controlling the closestool to flush with a large water volume or a small water volume according to whether the current first turbidity is deviated from the second turbidity or not, and returning to the step 1).
Further, in the step 2), when it is determined that the current first turbidity and the second turbidity are greater than the set threshold, comparing the obtained current temperature of the toilet water seal with a preset value to determine whether the temperature changes, if so, determining whether the difference between the current first turbidity and the set threshold and the difference between the second turbidity and the set threshold are within an allowable change error range caused by the temperature, otherwise, executing the step 3); returning to the step 2) when the difference between the first turbidity and the set threshold value and the difference between the second turbidity and the set threshold value are within the error range of the allowable variation caused by the temperature, otherwise, executing the step 3).
Further, the step 3) includes the steps of:
31 Judging whether the current toilet seats or not and the seating time exceeds the preset time, if so, executing the step 32), otherwise, executing the step 33);
32 Judging whether the person leaves the seat, if so, executing the step 33), otherwise, returning to the step 31);
33 Judging whether the current first turbidity and the second turbidity deviate or not, if so, controlling the closestool to flush with large water volume and returning to the step 1), otherwise, controlling the closestool to flush with small water volume and returning to the step 1).
Further, in the step 3), after the toilet flushes a large amount of water, if the first turbidity and the second turbidity still have deviation, an alarm signal is sent.
Further, the error range is 0 to DeltaU, deltaU= + -K is DeltaT, K is a set value, and DeltaT is a difference value between the current temperature and a preset value.
Further, the turbidity sensor comprises a light-emitting part, a first light-receiving part and a second light-receiving part, wherein the light-emitting part is used for emitting light to a water seal area of the closestool, the first light-receiving part and the second light-receiving part are used for receiving the light emitted and reflected by the light-emitting part, and the first light-receiving part and the second light-receiving part are symmetrically arranged and take the central axis of the light-emitting part as a symmetry axis; the first turbidity is obtained by the first light receiving section, and the second turbidity is obtained by the second light receiving section.
The invention further provides a water-saving toilet, comprising the toilet flushing control system.
Compared with the prior art, the invention has the following beneficial effects:
1. the turbidity sensor comprises the light emitting part, the first light receiving part and the second light receiving part, wherein the first turbidity detected by the first light receiving part and the second turbidity detected by the second light receiving part are respectively transmitted to the controller, when the current first turbidity and the second turbidity are larger than a set threshold value, the controller controls the flushing executing mechanism to execute large-water-quantity flushing or small-water-quantity flushing according to whether the current first turbidity and the current second turbidity deviate or not, and the invention can indirectly distinguish the large-water-quantity flushing and the small-water-quantity flushing according to the type (solid or liquid) of the substances in the water seal of the closestool because the current first turbidity and the second turbidity deviate or not are determined by the type of the substances in the water seal of the closestool.
2. The turbidity sensor is positioned at the jet orifice at the bottom of the urinal of the closestool, so that secondary opening of the closestool is avoided, the appearance structure of the closestool is prevented from being damaged, and the problems of inconvenient installation and damage to the appearance structure of the closestool caused by the fact that the existing turbidity sensor is required to be installed on the closestool through opening are solved.
3. The turbidity sensor fixing device also comprises a fixing body, and the fixing body is used as a carrier of the turbidity sensor, so that the problems of fixing and sealing of the turbidity sensor are solved. The fixed body is preferably provided with a spray head, so that the spray head is more convenient and easier to install and seal.
4. The invention can control the flushing or not by combining the water seal temperature, so that the data is more accurate and reliable, thereby avoiding the phenomenon of false flushing caused by the jump of turbidity detected by the turbidity sensor due to the abrupt change of the water seal temperature of the closestool (for example, the closestool enters hot water or ice water) (the turbidity sensor in the prior art also has the problem).
5. The temperature sensor is integrated with the turbidity sensor, or the temperature sensor and the turbidity sensor are installed at the same position, so that extra holes are avoided when the temperature sensor is installed, the appearance structure of the closestool is prevented from being damaged, and meanwhile, the temperature sensor is convenient to install.
6. The invention can further control the flushing time by combining seat information, avoid the problems of water resource waste and discomfort of users caused by the fact that users execute flushing actions twice when the users urinate and defecate firstly, and also avoid the problem of discomfort of users caused by starting flushing without leaving the seat when the users defecate.
7. According to the invention, after the toilet flushes a large amount of water, an alarm signal is sent when the first turbidity and the second turbidity still have deviation, so that each flushing is ensured to be clean and normal, the condition that a user leaves for flushing cleanly is prevented, and the virus transmission in the excrement is avoided.
8. The first light receiving part and the second light receiving part are positioned on one side of the light emitting surface of the light emitting part, and the light receiving surface of the first light receiving part is opposite to the light receiving surface of the second light receiving part, so that when the turbidity sensor is installed, only one light transmitting hole corresponding to the light emitting part is required to be arranged, and the light transmitting hole is easier to carry out water-passing treatment.
The invention is described in further detail below with reference to the drawings and examples; the toilet bowl flush control system and method and the water saving toilet of the present invention are not limited to the embodiments.
Drawings
FIG. 1 is a schematic block diagram of a toilet flush control system of the present invention;
FIG. 2 is a schematic diagram of the structure of the turbidity sensor (including the temperature sensor) of the present invention;
FIG. 3 is a schematic circuit configuration of the turbidity sensor of the present invention;
FIG. 4 is a schematic circuit diagram of a temperature sensor of the present invention;
FIG. 5 is a schematic view of the structure of the spray head of the present invention;
FIG. 6 is a schematic view of the turbidity sensor (including the temperature sensor) of the present invention after being mounted on the spray head;
FIG. 7 is a cross-sectional view of the spray head of the present invention with turbidity sensors and the like mounted on a toilet seat;
FIG. 8 is a graphical representation of the change in data from a turbidity test performed on urine in accordance with the present invention;
FIG. 9 is a graph showing the change of data of turbidity test of tea water according to the present invention;
fig. 10 is a flow chart of the toilet flushing control method of the present invention.
Detailed Description
Referring to fig. 1-9, a toilet flushing control system of the present invention includes a flushing actuator, a controller 3 and a turbidity sensor 1 for detecting turbidity of a water seal of the toilet, wherein an output of the turbidity sensor 1 is connected to the controller 3, and an output of the controller 3 is connected to the flushing actuator, and the flushing actuator is a flushing solenoid valve 4, and is preferably a normally open solenoid valve. The turbidity sensor 1 includes a light emitting portion 11 for emitting light to a water sealed region of the toilet bowl, a first light receiving portion 12 and a second light receiving portion 13, the first light receiving portion 12 and the second light receiving portion 13 for receiving the light emitted and reflected by the light emitting portion, the first light receiving portion 12 and the second light receiving portion 13 being symmetrically arranged with a central axis of the light emitting portion 11 as a symmetry axis; the first turbidity detected by the first light receiving unit 12 and the second turbidity detected by the second light receiving unit 13 are respectively transmitted to the controller 3, and when the current first turbidity and second turbidity are larger than a set threshold value (the first turbidity and the second turbidity are changed for short), the controller 3 controls the flushing executing mechanism (namely the flushing electromagnetic valve 4) to execute flushing with large water volume or flushing with small water volume according to whether the current first turbidity and the second turbidity deviate or not. The first turbidity is represented by the voltage signal of the first light receiving section 12, and the second turbidity is represented by the voltage signal of the second light receiving section 13. The first light receiving part 12 and the second light receiving part 13 collect the water seal turbidity of the toilet bowl in real time, namely, collect continuously, and collect once in about 0.5 seconds.
In this embodiment, as shown in fig. 2, the first light receiving portion 12 and the second light receiving portion 13 are located on the side where the light emitting surface of the light emitting portion 11 is located, and the light receiving surface of the first light receiving portion 12 is opposite to the light receiving surface of the second light receiving portion 13, but the layout of the first light receiving portion 12 and the second light receiving portion 13 is not limited thereto, and in other embodiments, the light receiving surfaces of the first light receiving portion and the second light receiving portion are both oriented in the light emitting direction of the light emitting portion. The central axis of the light emitting part 11, the central axis of the first light receiving part 12 and the central axis of the second light receiving part 13 are coplanar.
In this embodiment, the present invention further includes a temperature sensor 2 for detecting the water sealing temperature of the toilet bowl, and the output of the temperature sensor 2 is connected to the controller 3 to transmit the temperature signal acquired in real time to the controller 3. According to the invention, by arranging the temperature sensor 2, the controller 3 can control whether flushing is performed or not by combining the water seal temperature, so that the phenomenon of false flushing caused by jump of turbidity detected by the turbidity sensor 1 due to abrupt change of the water seal temperature of the closestool (for example, hot water or ice water is entered into the closestool) is avoided. The temperature sensor 2 is integrated with the turbidity sensor 1, specifically, the temperature sensor 2 is disposed on a circuit board 14 of the turbidity sensor 1, and the temperature sensor 2 is located on the backlight side of the light emitting portion 11, as shown in fig. 2. In other embodiments, the temperature sensor is separate from the turbidity sensor, but is mounted at the same location, for example, both in a housing of a spray head described below.
In this embodiment, as shown in fig. 3, the light emitting portion 11 includes an infrared emitting tube D1, the first light receiving portion 12 includes a first infrared receiving tube D2, the second light receiving portion 13 includes a second infrared receiving tube D3, the infrared emitting tube D1, the first infrared receiving tube D2 and the second infrared receiving tube D3 are connected in parallel, and a voltage dividing resistor R1 is connected to a parallel branch where the infrared emitting tube D1 is located so as to protect the infrared emitting tube D1; the parallel branch where the first infrared receiving tube D2 is located is connected with a first capacitor C1, the parallel branch where the second infrared receiving tube D3 is located is connected with a second capacitor C2, and the first capacitor C1 and the second capacitor C2 are both used for filtering. The cathodes of the first infrared receiving tube D2 and the second infrared receiving tube D3 are respectively connected with the 3 rd pin and the 4 th pin of a connecting seat CN1, and are connected with the controller 3 through the connecting seat CN 1. As shown in fig. 4, the component denoted by Q1 in the drawing is a temperature sensor 2, the model of which is ds18b20, a pull-up resistor R2 is connected between the 1 st pin and the second pin, and the 2 nd pin is connected with the controller 3 through another connection seat CN 2. The number of the first infrared receiving tubes D2 and the second infrared receiving tubes D3 is one, but the invention is not limited thereto, and the number of the first infrared receiving tubes D2 and the second infrared receiving tubes D3 can be two or more, and the number of the first infrared receiving tubes D2 and the second infrared receiving tubes D3 is ensured to be consistent and to be symmetrical.
In this embodiment, the turbidity sensor 1 is located at the jet port at the bottom of the bowl of the toilet. Specifically, the invention further comprises a fixed body, the turbidity sensor 1 is arranged on the fixed body, and the fixed body is arranged on the jet orifice. The fixing body is specifically a spray head 7, as shown in fig. 5 and 6, the spray head 7 is provided with a containing part, a pipe joint 73, a water spraying hole 72 and a light transmission area which cannot pass water, the water spraying hole 72 is communicated with the pipe joint 73, and the water spraying hole 72 and the light transmission area are positioned on the same side of the spray head 7. The accommodating portion is specifically an accommodating groove 71, the turbidity sensor 1 is disposed in the accommodating groove 71, and the light emitting portion 11 faces the light transmitting area. As shown in fig. 7, the jet head 7 is hermetically connected to the jet port 81 at the bottom of the bowl of the toilet seat 8 of the toilet, and its jet port 72 and light-transmitting area are opposite to the water-sealed area of the toilet seat 8. The light-transmitting area specifically includes a light-transmitting hole 74 that is communicated with the accommodating groove 71, the light-transmitting hole 74 is opposite to the light-emitting surface of the light-emitting portion 11, and the light-transmitting hole 74 is subjected to water sealing treatment, so that the light-transmitting hole 74 not only retains the light-transmitting function, but also can avoid water inflow. The pipe joint 73 is used for connecting water pipes.
In this embodiment, the present invention further comprises a seating sensor 5 for detecting whether a person is seated, and the output of the seating sensor 5 is connected to the controller 3 to transmit the real-time acquired emphasis information to the controller 3. The controller 3 is enabled to further control the flushing timing in combination with the seat information. The invention also comprises an alarm module 6, and the output of the controller 3 is connected to the alarm module 6 so as to send an alarm signal when the first turbidity and the second turbidity still deviate after the toilet flushes with large water. The alarm module 6 may be an audible alarm module, such as a buzzer, an optical alarm module, such as an LED indicator light, or an audible and visual alarm module.
In this embodiment, the controller 3 adopts a single chip microcomputer with the model of STM32f103, the turbidity value obtained within one minute of starting (the turbidity value is the turbidity value of the clean toilet water seal) defaults to be a threshold value, then, the first infrared receiving tube D2 and the second infrared receiving tube D3 collect the water seal turbidity of the toilet in real time (i.e. collect continuously, collect for about 0.5 seconds) and transmit the water seal turbidity to the controller 3 through AD conversion, the controller 3 determines in real time whether the first turbidity transmitted by the first infrared receiving tube D2 and the second turbidity transmitted by the second infrared receiving tube D3 have forward jump greater than the threshold value, and when the continuous forward jump occurs, the temperature information and the emphasis information are combined to determine whether solids enter the toilet water seal (collectively referred to as a toilet behavior) or whether liquid enters the toilet water seal (collectively referred to as a urine behavior), and accordingly, the toilet is controlled to flush with a large volume or a small volume. The two flushing modes of large water volume flushing and small water volume flushing can be switched by controlling the flushing opening degree and/or the flushing time length.
The invention relates to a toilet flushing control system, which has the following working principle: for small-particle turbidity matters, when infrared light emitted by the infrared emission tube D1 passes through the small particles, the infrared light is refracted and diffusely reflected, so that the receiving amounts of the first infrared receiving tube D2 and the second infrared receiving tube D3 are different, the resistance values of the first infrared receiving tube D2 and the second infrared receiving tube D3 have obvious change, and larger difference exists, so that the voltage signals of the first infrared receiving tube D2 and the second infrared receiving tube D3 have deviation, namely the first turbidity and the second turbidity have deviation, the stool behavior can be judged by combining seating information (the seating time exceeds the preset time which is about 30 seconds), and the large-water-volume flushing is performed when a person leaves. For the liquid (urine, tea, milk and the like) which is relatively uniform, infrared light emitted by the infrared emission tube D1 can be absorbed by molecules in the liquid, and obvious attenuation can be achieved when the infrared light is reflected back, so that the resistance values of the first infrared receiving tube D2 and the second infrared receiving tube D3 can be synchronously changed, urination behaviors are judged, and after the first turbidity and the second turbidity are stable, small water flushing is carried out. The present invention is further described below with respect to the change in turbidity collected by the first infrared receiving tube D2 and the second infrared receiving tube D3, by taking two examples.
As shown in fig. 8, the abscissa in the figure represents the data number, that is, the first collection, the second collection, the third collection, etc., and the ordinate represents the first turbidity and the second turbidity (collectively referred to as the turbidity, that is, the voltage value after AD conversion) respectively collected by the first infrared receiving tube D2 and the second infrared receiving tube D3, at the initial stage of collection, the turbidity is about 600, and at this time, the water is normally water-sealed in the toilet, when urine enters the toilet water seal, the turbidity rises to 700, and after flushing, the turbidity returns to 600.
As shown in fig. 9, the abscissa represents the data number, i.e., the first collection, the second collection, the third collection, etc., and the ordinate represents the turbidity (i.e., the voltage value after AD conversion) collected by the first infrared receiving tube D2 and the second infrared receiving tube D3, and at the initial stage of collection, the turbidity is about 600, and is normal toilet water seal water at this time, and when the water is poured into the water, the turbidity rises to 700, and after flushing, the turbidity returns to 600.
Therefore, after flushing, the resistance values of the first infrared receiving tube D2 and the second infrared receiving tube D3 can return to the initial values, if the deviation of the two resistance values is still larger (namely, the first turbidity and the second turbidity are still larger), the alarm is prompted (the toilet is blocked and not flushed cleanly or a certain infrared receiving tube is abnormal), the toilet flushing control system can be ensured to be always in an accurate state through abnormal judgment, each flushing is ensured to be clean and normal, the condition that a user leaves for flushing cleanly is prevented, and virus transmission in excrement is avoided.
If the current temperature detected by the temperature sensor is higher than a preset value (the preset value is the normal temperature of the toilet water seal, and when the device is started, the controller defaults the acquired normal temperature value of the toilet water seal to the preset value) to have obvious jump (short for temperature change), the invention can calculate by combining the turbidity of the first infrared receiving tube D2 and the second infrared receiving tube D3 to see whether the toilet enters hot water or ice water or not, and perform integrated calculation, thereby avoiding the phenomenon of false flushing caused by jump of the turbidity detected by the turbidity sensor 1 due to the abrupt change of the temperature of the toilet water seal (for example, the toilet enters the hot water or the ice water). Specifically, when the controller 3 determines that the first turbidity and the second turbidity change, the obtained current temperature of the toilet water seal is compared with a preset value, whether the temperature changes is determined, and if the temperature does not change, it is indicated that hot water or ice water does not enter the toilet. If the temperature changes, the controller 3 further determines whether the changes of the first turbidity and the second turbidity (i.e., the difference between the current first turbidity and the threshold value and the difference between the second turbidity and the threshold value) are within the allowable change error range caused by the temperature, if so, it indicates that the changes of the first turbidity and the second turbidity are simply caused by temperature jump, and not stool or urine behaviors, so that flushing is not started. If the changes of the first turbidity and the second turbidity are not within the allowable change error range caused by the temperature, the changes of the first turbidity and the second turbidity are caused by solid matters or liquid entering the closestool, belong to the defecation behavior or the urination behavior, and therefore, the large water volume flushing or the small water volume flushing is needed. The error range is 0 to DeltaU, deltaU= + -K is DeltaT, K is a set value, the set value is obtained through experiments, and the DeltaT is the difference value between the current temperature and a preset value.
The working process of the controller 3 for controlling the flushing time by combining seat information is as follows: when there is no change in temperature and there is a change in the first turbidity and the second turbidity, or when there is a change in the first turbidity, the second turbidity and the temperature and the change in the first turbidity and the second turbidity is not within an error range of the allowable change caused by the temperature, the controller 3 judges whether the current toilet is occupied for more than a preset time (the preset time takes 30 seconds, but is not limited to the preset time), if yes, further judges whether the person leaves the seat, and if yes, judges whether the current first turbidity and the current second turbidity deviate, if yes, the toilet is controlled to flush with a large water volume, and if not, the toilet is controlled to flush with a small water volume. Therefore, the problems of water resource waste and discomfort of the user caused by the fact that the user performs flushing action twice when the user urinates and urinates firstly and then can be avoided, and the problem of discomfort of the user caused by the fact that the user starts flushing without leaving the seat when the user urinates is also avoided.
Referring to fig. 1-9, the water saving toilet according to the present invention is a smart toilet, including a toilet seat, and further including a toilet flushing control system according to the present invention.
According to the water-saving closestool, by arranging the closestool flushing control system, the problem that the existing turbidity sensor cannot recognize urine and feces and cannot control water waste caused by flushing (namely flushing with large water volume and flushing with small water volume) when being used for an intelligent closestool is solved, and the problem that water waste is caused by flushing with hot water or ice water due to bathing or other reasons in the closestool is solved.
The invention relates to a toilet flushing control method, which adopts a turbidity sensor to detect the water sealing turbidity of a toilet, and obtains a first turbidity and a second turbidity, and comprises the following steps:
1) Acquiring current first turbidity and second turbidity;
2) Judging whether the current first turbidity and second turbidity are greater than a set threshold value, if so, executing the step 3), otherwise, returning to the step 1);
3) And controlling the closestool to flush with a large water volume or a small water volume according to whether the current first turbidity is deviated from the second turbidity or not, and returning to the step 1).
In this embodiment, in the step 2), when it is determined that the first turbidity and the second turbidity are greater than the set threshold, the obtained current temperature of the toilet water seal is compared with a preset value to determine whether the temperature is changed, if so, whether the change of the first turbidity and the second turbidity (i.e., the difference between the current first turbidity and the set threshold and the difference between the second turbidity and the set threshold) is within the allowable change error range caused by the temperature is determined, otherwise, step 3) is performed; returning to step 2) when the change in the first turbidity and the second turbidity is within the error range of the allowable change caused by the temperature, otherwise, performing step 3).
In this embodiment, the step 3) includes the following steps:
31 Judging whether the current toilet is sitting for more than a preset time (the preset time is 30 seconds but not limited to the preset time), if yes, executing the step 32), otherwise, executing the step 33);
32 Judging whether the person leaves the seat, if so, executing the step 33), otherwise, returning to the step 31);
33 Judging whether the current first turbidity and the second turbidity deviate or not, if so, controlling the closestool to flush with large water volume and returning to the step 1), otherwise, controlling the closestool to flush with small water volume and returning to the step 1).
In this embodiment, the error range is 0 to Δu, Δu= ±k Δt, K is a set value, the set value is obtained by experiments, the value is 0.0192, Δt is a difference value between the current temperature and a preset value, the preset value is a normal temperature of the toilet water seal, and when the toilet is started, the controller of the toilet defaults the obtained normal temperature value of the toilet water seal to the preset value.
In this embodiment, the turbidity sensor includes a light emitting portion for emitting light to a water sealed area of the toilet, a first light receiving portion and a second light receiving portion for receiving the light emitted and reflected by the light emitting portion, the first light receiving portion and the second light receiving portion being symmetrically disposed and taking a central axis of the light emitting portion as a symmetry axis; the first turbidity is obtained by the first light receiving section, and the second turbidity is obtained by the second light receiving section.
The invention relates to a toilet flushing control method, the whole working flow of which is shown in figure 10, comprising the following steps:
s1, starting;
s2, reading the temperature and the two turbidity (namely the first turbidity and the second turbidity) of the current toilet water seal;
s3, judging whether the current first turbidity and the second turbidity are larger than a set threshold value (simply judging whether the two turbidities are changed or not), if so, executing the step S4, otherwise, returning to the step S2;
s4, judging whether the temperature of the current toilet water seal is changed from a preset value (whether the temperature is changed for short), if so, executing the step S5, otherwise, executing the step S6;
s5, judging whether the change of the first turbidity and the second turbidity (namely, the difference value between the current first turbidity and the set threshold value and the difference value between the second turbidity and the set threshold value) is within the error range of the allowable change caused by the temperature, if so, returning to the step S3, otherwise, executing the step S6;
s6, judging whether a person sits on the current closestool and exceeds preset time (the preset time is 30 seconds, but is not limited to the preset time), if yes, executing the step S7, otherwise, executing the step S8;
s7, judging whether the person leaves the seat, if so, executing the step S8, otherwise, returning to the step 31);
s8, judging whether the current first turbidity and the second turbidity deviate or not, if so, executing a step S9, otherwise, executing a step S10;
s9, controlling the closestool to flush with large water volume, and returning to the step S2;
and S10, after the first turbidity and the second turbidity are stabilized, controlling the closestool to flush with a small water volume, and returning to the step S2.
The toilet flushing control method can be realized by adopting the toilet flushing control system or the water-saving toilet.
The above embodiments are only used for further illustrating a toilet flushing control system and method and a water saving toilet according to the present invention, but the present invention is not limited to the embodiments, and any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention falls within the scope of the technical solution of the present invention.
Claims (11)
1. A toilet flushing control system comprises a controller and a turbidity sensor for detecting the turbidity of a water seal of a toilet; the method is characterized in that: the turbidity sensor comprises a light-emitting part, a first light-receiving part and a second light-receiving part, wherein the light-emitting part is used for emitting light to a water sealing area of the closestool, the first light-receiving part and the second light-receiving part are used for receiving the light emitted and reflected by the light-emitting part, and the first light-receiving part and the second light-receiving part are symmetrically arranged and take the central axis of the light-emitting part as a symmetry axis; the first turbidity detected by the first light receiving part and the second turbidity detected by the second light receiving part are respectively transmitted to the controller, and when the current first turbidity and the second turbidity are larger than a set threshold value, the controller outputs a control signal of flushing a large amount of water or a control signal of flushing a small amount of water according to whether the current first turbidity and the second turbidity deviate or not; the water seal temperature of the closestool is detected, the output of the temperature sensor is connected to the controller, when the controller judges that the first turbidity and the second turbidity change, the acquired current temperature of the water seal of the closestool is compared with a preset value, if the temperature changes, the controller further judges whether the changes of the first turbidity and the second turbidity are in an error range of allowable changes caused by the temperature, if so, flushing is not started, otherwise, flushing with large water volume or flushing with small water volume is performed;
the turbidity sensor is positioned at the jet orifice at the bottom of the urinal of the closestool;
the device also comprises a fixed body, wherein the turbidity sensor is arranged on the fixed body, and the fixed body is arranged on the jet orifice at the bottom of the toilet bowl;
the fixed body is a spray head, the spray head is provided with a containing part, a pipe joint, a water spraying hole and a light transmission area which can not be used for water, the water spraying hole is communicated with the pipe joint, and the water spraying hole and the light transmission area are positioned on the same side of the spray head; the turbidity sensor is arranged on the accommodating part, and the light-emitting part of the turbidity sensor faces the light-transmitting area; the spray nozzle is connected with the spray opening in a sealing way, and the water spray opening and the light-transmitting area of the spray nozzle face the water seal area of the closestool.
2. The toilet flush control system of claim 1, wherein: the temperature sensor is integrated with the turbidity sensor or the temperature sensor is separated from the turbidity sensor and is arranged at the same position.
3. The toilet flush control system of any one of claims 1-2, wherein: the device also comprises a seating sensor for detecting whether a person is seated, and the output of the seating sensor is connected to the controller so that the controller can control the flushing time in combination with the seating information.
4. The toilet flush control system of claim 1, wherein: the output of the controller is connected to the alarm module so as to send an alarm signal when the first turbidity and the second turbidity still have deviation after the toilet flushes with large water volume; and/or, further comprising a flushing actuator, the output of the controller being connected to the flushing actuator.
5. The toilet flush control system of claim 1, wherein: the first light receiving part and the second light receiving part are positioned on one side of the light emitting surface of the light emitting part, and the light receiving surface of the first light receiving part is opposite to the light receiving surface of the second light receiving part.
6. The toilet flush control system of claim 1, wherein: the luminous portion includes infrared transmitting tube, first light receiving portion includes first infrared receiving tube, second light receiving portion includes the infrared receiving tube of second, infrared transmitting tube, first infrared receiving tube and the parallel connection of second infrared receiving tube, is connected with divider resistor on the parallel branch that infrared transmitting tube is located, is connected with first electric capacity on the parallel branch that first infrared receiving tube is located, is connected with the second electric capacity on the parallel branch that second infrared receiving tube is located.
7. The toilet flushing control method is characterized in that: detecting the water seal turbidity of the toilet bowl by adopting a turbidity sensor, and obtaining a first turbidity and a second turbidity, wherein the method comprises the following steps:
1) Acquiring current first turbidity and second turbidity;
2) Judging whether the current first turbidity and second turbidity are greater than a set threshold value, if so, executing the step 3), otherwise, returning to the step 1);
3) Controlling the closestool to flush with large water or small water according to whether the current first turbidity is deviated from the second turbidity or not, and returning to the step 1);
in the step 2), when the current first turbidity and the second turbidity are determined to be greater than the set threshold value, comparing the acquired current temperature of the toilet water seal with a preset value, and determining whether the temperature is changed, if so, determining whether the difference value between the current first turbidity and the set threshold value and the difference value between the second turbidity and the set threshold value are within an allowable change error range caused by the temperature, otherwise, executing the step 3); returning to said step 2) when the difference between the first turbidity and the set threshold and the difference between the second turbidity and the set threshold are within the error range of the allowable variation caused by the temperature, otherwise executing said step 3);
the turbidity sensor comprises a light-emitting part, a first light-receiving part and a second light-receiving part, wherein the light-emitting part is used for emitting light to a water seal area of the closestool, and the first light-receiving part and the second light-receiving part are symmetrically arranged and take the central axis of the light-emitting part as a symmetry axis; the first turbidity is obtained by the first light receiving part, and the second turbidity is obtained by the second light receiving part;
the turbidity sensor is positioned at the jet orifice at the bottom of the urinal of the closestool;
the device also comprises a fixed body, wherein the turbidity sensor is arranged on the fixed body, and the fixed body is arranged on the jet orifice at the bottom of the toilet bowl; the fixed body is a spray head, the spray head is provided with a containing part, a pipe joint, a water spraying hole and a light transmission area which can not be used for water, the water spraying hole is communicated with the pipe joint, and the water spraying hole and the light transmission area are positioned on the same side of the spray head; the turbidity sensor is arranged on the accommodating part, and the light-emitting part of the turbidity sensor faces the light-transmitting area; the spray nozzle is connected with the spray opening in a sealing way, and the water spray opening and the light-transmitting area of the spray nozzle face the water seal area of the closestool.
8. The toilet flush control method of claim 7, wherein: said step 3) comprises the steps of:
31 Judging whether the current toilet seats or not and the seating time exceeds the preset time, if so, executing the step 32), otherwise, executing the step 33);
32 Judging whether the person leaves the seat, if so, executing the step 33), otherwise, returning to the step 31);
33 Judging whether the current first turbidity and the second turbidity deviate or not, if so, controlling the closestool to flush with large water volume and returning to the step 1), otherwise, controlling the closestool to flush with small water volume and returning to the step 1).
9. The toilet flush control method of claim 7, wherein: in the step 3), after the toilet flushes with large water volume, if the first turbidity and the second turbidity still have deviation, an alarm signal is sent out.
10. The toilet flush control method of claim 7, wherein: the error range is 0 to DeltaU, deltaU= + -K is DeltaT, K is a set value, and DeltaT is the difference between the current temperature and a preset value.
11. A water saving toilet, characterized in that: comprising a toilet flush control system as claimed in any one of claims 1 to 6.
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| CN114033002A (en) * | 2021-12-02 | 2022-02-11 | 中山东菱威力洁净科技有限公司 | Automatic flushing system and automatic flushing method of induction closestool |
| CN114775749A (en) * | 2022-05-10 | 2022-07-22 | 深圳市恒致云科技有限公司 | Flushing control method and device of closestool, intelligent closestool and computer equipment |
| CN115198854B (en) * | 2022-07-14 | 2024-06-25 | 中国水利水电科学研究院 | Intelligent water-saving toilet capable of automatically identifying water level and control method thereof |
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| KR100815875B1 (en) * | 2007-10-22 | 2008-03-24 | 대지정공주식회사 | Sewage overflow interception apparatus for vacuum inhalation car |
| KR20090098453A (en) * | 2008-03-14 | 2009-09-17 | 삼성전자주식회사 | Turbidity sensor and home appliances having the same |
| CN102587476B (en) * | 2011-01-11 | 2015-06-24 | 松下电器产业株式会社 | Sanitary cleaning device |
| JP6153055B2 (en) * | 2013-03-06 | 2017-06-28 | Toto株式会社 | Urinal with hygiene maintenance device |
| CN203834615U (en) * | 2013-10-23 | 2014-09-17 | 赵正良 | Automatic flushing closestool |
| CN107313496B (en) * | 2017-08-24 | 2019-09-03 | 威海惠高生物科技有限公司 | A kind of intelligent closestool and its control method |
| CN107938803A (en) * | 2017-12-11 | 2018-04-20 | 吉林天亮人工环境科技有限公司 | A kind of water-saving taste removal urinal |
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