CN114360235A - Toilet seat control method and system based on FMCW microwave inductor - Google Patents
Toilet seat control method and system based on FMCW microwave inductor Download PDFInfo
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- 230000036541 health Effects 0.000 claims description 7
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
- A47K13/00—Seats or covers for all kinds of closets
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
- A47K13/00—Seats or covers for all kinds of closets
- A47K13/10—Devices for raising and lowering, e.g. tilting or lifting mechanisms; Collapsible or rotating seats or covers
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/011—Arrangements for interaction with the human body, e.g. for user immersion in virtual reality
Abstract
The invention belongs to the technical field of closestool control, and particularly relates to a closestool seat control method and system based on an FMCW microwave sensor, wherein the method is applied to an intelligent closestool, the FMCW microwave sensor is installed on a wall at the rear side of the intelligent closestool, and the method specifically comprises the following steps: acquiring an environment frequency spectrum signal in real time; acquiring actual user distance information in a preset detection area, and judging whether the distance between a user and a preset reference point is less than or equal to a preset first standard use distance or not; and generating a toilet seat opening instruction, judging whether the current body posture signal is matched with the standard used toilet seat posture signal, and generating a toilet seat driving instruction when the judgment is yes. The invention carries out comprehensive judgment by combining the distance and the gesture, thereby realizing the reduction of the production cost, avoiding the false triggering of the light source, realizing the accurate control and further meeting the use requirements of users.
Description
Technical Field
The invention belongs to the technical field of toilet control, and particularly relates to a toilet seat control method and system based on an FMCW microwave sensor.
Background
The closestool is an indispensable article in daily life, and then in order to satisfy people's increasingly health and consumption demand, intelligent closestool comes to life. The intelligent toilet originated in the united states first and developed and improved in japanese korea, and its main function is designed to be different according to the needs of different regions.
At present, intelligent closestool when carrying out intelligent control, mostly adopt traditional sensing signal detection mode to control, if the sensor of type is received to one sending, this kind of sensor has the problem of control imprecisely, or adopt precision type sensor again, if TOF sensor, but this kind of type sensor has at least three problem when carrying out intelligent closestool and controlling, one leads to the problem that manufacturing cost is high for with high costs, two leads to the imprecise problem of control for the spurious triggering of easy because of the light source, three for there is the problem that influences user privacy and leads to the user to have the use to worry when carrying out gesture detection, and then influence the use.
Therefore, it can be seen that the intelligent closestool in the market has the problem that the control is not accurate due to the irrational design of the control part, so that the use of a user is influenced, and the use requirement of the user cannot be met.
Disclosure of Invention
The invention aims to provide a toilet seat control method and system based on an FMCW microwave inductor, and aims to solve the technical problems that in the prior art, an intelligent toilet is inaccurate in control due to irrational design of a control part, so that use of a user is influenced, and use requirements of the user cannot be met.
In order to achieve the above object, an embodiment of the present invention provides a toilet seat control method based on an FMCW microwave sensor, where the method is applied to an intelligent toilet, and the FMCW microwave sensor is installed on a wall at the rear side of the intelligent toilet, and the method specifically includes the following steps:
step S100: acquiring an environment frequency spectrum signal generated after the FMCW microwave inductor detects a preset detection area in real time;
step S200: acquiring user actual distance information in a preset detection area according to the environment frequency spectrum signal, wherein the user actual distance information is distance information between a preset reference point and a user, the preset reference point is preset, and the preset reference point is the position of the FMCW microwave inductor;
step S300: judging whether the distance between the user and a preset reference point is less than or equal to a preset first standard use distance or not according to the actual user distance information;
step S400: when the distance between the user and the preset reference point is judged to be smaller than or equal to the preset first standard use distance, a closestool cover opening instruction is generated and sent to the intelligent closestool, and meanwhile, the current body posture signal of the user is obtained according to the environment frequency spectrum signal, wherein the closestool cover opening instruction is used for controlling the intelligent closestool to open the upper cover;
step S500: and comparing the current body posture signal with a pre-stored standard using a toilet bowl posture signal, judging whether the current body posture signal is matched with the standard using the toilet bowl posture signal or not, and generating a toilet seat driving instruction when the judgment is yes, and sending the toilet seat driving instruction to the intelligent toilet bowl, wherein the toilet seat driving instruction is used for controlling the intelligent toilet bowl to fall down or lift up a seat.
Optionally, the standard use toilet position signal comprises a use ready seat position signal and a use free seat ready position signal;
the toilet seat driving command comprises a seat falling command and a seat lifting command;
step S500: will current health posture signal and the standard of prestoring use closestool posture signal to compare to judge current health posture signal with whether the standard uses closestool posture signal to match, when judging for yes, generate toilet seat drive instruction, and will toilet seat drive instruction sends intelligent closestool, toilet seat drive instruction is used for controlling intelligent closestool and falls or lifts the seat, specifically includes:
step S510: comparing the current body posture signal with the seat ring preparation posture signal needing to be used and the seat ring preparation posture signal not needing to be used, and judging whether the current body posture signal is matched with the seat ring preparation posture signal needing to be used or not or is matched with the seat ring preparation posture signal not needing to be used;
step S520: if the current body posture signal is judged to be the ready posture signal of the toilet seat needing to be used, generating a toilet seat falling instruction, and sending the toilet seat falling instruction to the intelligent toilet, wherein the toilet seat falling instruction is used for controlling the intelligent toilet to fall into the toilet seat, and the intelligent toilet seat falling instruction is used for controlling the toilet seat to be converted into a horizontal state;
step S530: and judging that the current body posture signal is matched with the prepared posture signal without using a seat ring, generating a seat ring lifting instruction, and sending the seat ring lifting instruction to the intelligent closestool, wherein the seat ring lifting instruction is used for controlling the intelligent closestool to lift the seat ring, and the intelligent closestool lifts the seat ring to be in a non-horizontal state for controlling the seat ring to be converted.
Optionally, the signals of the ready-to-use seat ring posture include a turning motion signal, a bending motion signal and a squat motion signal;
step S100: the method comprises the following steps of acquiring an environmental frequency spectrum signal generated after detection in a preset detection area based on the FMCW microwave inductor in real time, wherein the method comprises the following steps:
step S001: when a user needs to use the seat ring, calibrating a signal corresponding to the turning motion of the user when the user uses the seat ring in advance based on the FMCW microwave inductor to serve as a turning motion signal;
step S002: when a user needs to use the seat ring, calibrating a signal corresponding to the stooping action of the user when the user uses the seat ring in advance based on the FMCW microwave inductor to serve as a stooping action signal;
step S003: when the user needs to use the seat ring, calibrating a signal corresponding to the action of squatting when the user uses the seat ring in advance based on the FMCW microwave sensor to serve as a squatting action signal.
Optionally, the FMCW microwave sensor includes an antenna group, and the antenna group includes at least one transmitting antenna and at least three receiving antennas, where a first receiving antenna is disposed in parallel with a second receiving antenna, the transmitting antenna is disposed directly above the first receiving antenna, and a third receiving antenna is disposed in parallel with the transmitting antenna and is located directly above the second receiving antenna;
the environment spectrum signal comprises a first antenna spectrum signal, a second antenna spectrum signal and a third antenna spectrum signal, wherein the first antenna spectrum signal is acquired after passing through the first receiving antenna, the second antenna spectrum signal is acquired after passing through the second receiving antenna, and the third antenna spectrum signal is acquired after passing through the third receiving antenna;
the first antenna frequency spectrum signal, the second antenna frequency spectrum signal and the third antenna frequency spectrum signal comprise N frequency points, and each frequency point corresponds to frequency point amplitude information and frequency point distance information respectively;
step S200: acquiring actual user distance information in a preset detection area according to the environment spectrum signal, specifically comprising:
step S210: frequency point amplitude information of frequency points with the same sequence number in the first antenna frequency spectrum signal, the second antenna frequency spectrum signal and the third antenna frequency spectrum signal is respectively extracted;
step S220: judging whether frequency point amplitude information of frequency points with the same sequence number in the frequency spectrum information changes or not;
step S230: if the judgment result is yes, extracting the frequency point distance information corresponding to the changed frequency point amplitude information, and recording the frequency point distance information as the actual user distance information in the preset detection area.
Optionally, in step S400, the step of obtaining the current body posture signal of the user according to the environment spectrum signal specifically includes:
step S410: acquiring a horizontal plane angle between a user and the FMCW microwave inductor according to the first antenna spectrum signal and the second antenna spectrum signal;
step S420: acquiring a vertical plane angle between a user and the FMCW microwave inductor according to the second antenna spectrum signal and the third antenna spectrum signal;
step S430: and generating a current body posture signal according to the actual distance information of the user, the horizontal plane angle and the vertical plane angle.
Alternatively, step S100: the method includes the steps of acquiring an environmental frequency spectrum signal generated after detection in a preset detection area based on the FMCW microwave sensor in real time, and specifically including:
step S110: acquiring a current environment detection signal detected in a preset detection area by the FMCW microwave sensor;
step S120: and generating an environment frequency spectrum signal according to the current environment detection signal.
Optionally, step S120: generating an environment spectrum signal according to the current environment detection signal, specifically comprising:
step S121: converting the current environment detection signal into an environment detection digital signal;
step S122: converting the environment detection digital signal into a frequency domain environment signal through Fourier transform;
step S123: and generating the environment frequency spectrum signal according to the frequency domain environment signal.
Alternatively, step S121: converting the current environment detection signal into an environment detection digital signal, specifically comprising:
step S1211: filtering and amplifying the current environment detection signal to obtain an amplified environment signal with an amplified amplitude;
step S1212: and performing analog-to-digital conversion on the amplified environment signal to obtain the environment detection digital signal.
Optionally, a toilet seat control system based on an FMCW microwave sensor, the system comprising a smart toilet and an FMCW microwave sensor, the FMCW microwave sensor being in communication with the smart toilet, the FMCW microwave sensor being mounted on a wall on the rear side of the smart toilet; wherein the content of the first and second substances,
the FMCW microwave sensor is used for detecting a preset detection area in real time and generating an environment frequency spectrum signal after detection;
the FMCW microwave sensor is used for acquiring user actual distance information in a preset detection area according to the environment spectrum signal, wherein the user actual distance information is distance information between a preset reference point and a user, the preset reference point is preset, and the preset reference point is the position of the FMCW microwave sensor;
the FMCW microwave sensor is used for judging whether the distance between the user and a preset reference point is less than or equal to a preset first standard use distance or not according to the actual distance information of the user;
the FMCW microwave sensor is used for generating a closestool cover opening instruction when the fact that the distance between a user and a preset reference point is smaller than or equal to a preset first standard using distance is judged, sending the closestool cover opening instruction to the intelligent closestool, and meanwhile obtaining a current body posture signal of the user according to the environment frequency spectrum signal, wherein the closestool cover opening instruction is used for controlling the intelligent closestool to open an upper cover;
the FMCW microwave sensor is used for comparing the current body posture signal with a pre-stored standard toilet bowl posture signal, judging whether the current body posture signal is matched with the standard toilet bowl posture signal or not, generating a toilet seat driving instruction when the current body posture signal is matched with the standard toilet bowl posture signal, and sending the toilet seat driving instruction to the intelligent toilet bowl, wherein the toilet seat driving instruction is used for controlling the intelligent toilet bowl to fall down or lift up a seat.
Optionally, the intelligent toilet comprises a toilet main control board, a seat driving mechanism and an upper cover driving mechanism, the toilet main control board is in communication connection with the FMCW microwave sensor, and the seat driving mechanism and the upper cover driving mechanism are both connected with the toilet main control board.
One or more technical schemes in the toilet seat control method and system based on the FMCW microwave sensor provided by the embodiment of the invention at least have one of the following technical effects:
the invention firstly installs the FMCW microwave sensor on the wall at the rear side of the intelligent closestool, namely, the situation of inaccurate detection caused by the attenuation or interference of ceramic parts or plastic parts of a closestool body to the FMCW microwave sensor is eliminated through the limitation of the installation position, the detection accuracy is improved, a matching structure between the microwave sensor and the closestool is not required to be arranged, the debugging and matching difficulty between the sensor and the closestool is greatly reduced, the installation efficiency is improved, in addition, the actual distance information of a user in a preset detection area is obtained through obtaining an environment frequency spectrum signal, when the distance between the user and a preset reference point is judged to be less than or equal to the preset first standard use distance, the closestool needing to be used is judged at the moment, so a closestool uncovering instruction is generated, and then, when the current body posture signal is judged to be matched with the standard use closestool posture signal, when the judgment result is yes, a toilet seat driving instruction is generated to drive the toilet seat to fall or lift, comprehensive judgment is carried out by combining the distance and the posture, the production cost is reduced, the false triggering of a light source is avoided, accurate control is realized, and the use requirements of users are further met.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a schematic flow chart of a toilet seat control method based on an FMCW microwave sensor according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a determination process for generating a toilet seat driving command according to an embodiment of the present invention;
FIG. 3 is a schematic flow chart of calibration of signals requiring the use of a race prepared attitude according to an embodiment of the present invention;
fig. 4 is a schematic flowchart of acquiring a generated environmental spectrum signal according to an embodiment of the present invention;
fig. 5 is a schematic view of a projection combination of the structure of the antenna group and the FMCW microwave sensor after detecting the object to be detected according to the embodiment of the present invention;
fig. 6 is a schematic flowchart of a process of acquiring actual distance information of a user in a preset detection area according to an embodiment of the present invention;
fig. 7 is a schematic flowchart of acquiring a current body posture signal of a user according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a reflection electromagnetic wave reflected to a receiving antenna according to an embodiment of the present invention;
fig. 9 is a schematic flowchart of generating an environmental spectrum signal according to an embodiment of the present invention;
fig. 10 is a flowchart illustrating a process of converting an environment detection digital signal according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the embodiments of the present invention, and should not be construed as limiting the invention.
In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.
In one embodiment of the present invention, as shown in fig. 1-2, a toilet seat control method based on an FMCW microwave sensor is provided, which is applied to an intelligent toilet.
The FMCW microwave sensor is installed on a wall on the rear side of the intelligent closestool.
Compared with the prior art that the sensor for detection is arranged on the closestool body, the FMCW microwave sensor is arranged on the wall on the rear side of the intelligent closestool, the FMCW microwave sensor is arranged on the closestool body, the situation that the detection is not accurate due to attenuation or interference of ceramic parts or plastic parts of the closestool body on the FMCW microwave sensor is eliminated through the change of the installation position, the detection accuracy is improved, a matching structure between the microwave sensor and the closestool is not needed, the debugging and matching difficulty between the sensor and the closestool is greatly reduced, and the installation efficiency is improved.
Specifically, as shown in fig. 1, the method specifically includes the following steps:
step S100: acquiring an environment frequency spectrum signal generated after the FMCW microwave inductor detects a preset detection area in real time;
in this step, the preset detection region is an intrinsic detection region of the FMCW microwave sensor, and the preset detection region is preset, and when the preset detection region is set, the preset detection region is set according to actual requirements, so that the FMCW microwave sensor has intrinsic detection regions with different detection ranges, for example, a range formed by using a wall surface where the FMCW microwave sensor is located as a revealing plane and radiating forward by 2 meters.
Step S200: acquiring user actual distance information in a preset detection area according to the environment frequency spectrum signal, wherein the user actual distance information is distance information between a preset reference point and a user, the preset reference point is preset, and the preset reference point is the position of the FMCW microwave inductor;
in this step, the setting of the preset reference point facilitates providing a calculation reference point in the calculation process. In this embodiment, the preset reference point is a position of the FMCW microwave sensor.
In another embodiment of the present invention, before the step S200, the method further includes:
presetting a preset reference point, for example, setting the position of the FMCW microwave inductor as the position of the preset reference point, specifically, the position of the FMCW microwave inductor.
Or setting the preset reference point as the position of the intelligent closestool. Considering that the position of the intelligent closestool is constant, when the FMCW microwave sensor is installed insecurely to cause deviation, the FMCW microwave sensor is taken as a preset reference point to cause the problem of inaccurate control, and the intelligent closestool is taken as the preset reference point to accurately acquire the actual distance information of the user, so that the problem of inaccurate control is avoided.
Step S300: judging whether the distance between the user and a preset reference point is less than or equal to a preset first standard use distance or not according to the actual user distance information;
in this step, the first criterion used distance is preset. Further, the first criterion usage distance is within the preset detection area. It should be understood that the preset detection area is a large detection range within which the FMCW microwave sensor can detect, and the first standard uses a distance that is a small detection range, when the user comes within the large detection range, there is a possibility of using all the articles in the preset detection area, such as washing, bathing, etc. And the intelligent closestool can be judged to be needed if the intelligent closestool is in a small detection range.
Step S400: when the distance between the user and the preset reference point is judged to be smaller than or equal to the preset first standard use distance, a closestool cover opening instruction is generated and sent to the intelligent closestool, and meanwhile, the current body posture signal of the user is obtained according to the environment frequency spectrum signal, wherein the closestool cover opening instruction is used for controlling the intelligent closestool to open the upper cover;
in this step, when judging that the distance between the user and the preset reference point is less than or equal to the preset first standard use distance, the user can be judged to need to use the intelligent closestool, namely, through the setting of the first standard use distance, the situation that the user may use other articles in the preset detection area or perform other operations is filtered, the user is further accurately judged to need to use the intelligent closestool, compared with the mode that the signal is detected in the prior art, the more accurate judgment is realized in this step.
Step S500: and comparing the current body posture signal with a pre-stored standard using a toilet bowl posture signal, judging whether the current body posture signal is matched with the standard using the toilet bowl posture signal or not, and generating a toilet seat driving instruction when the judgment is yes, and sending the toilet seat driving instruction to the intelligent toilet bowl, wherein the toilet seat driving instruction is used for controlling the intelligent toilet bowl to fall down or lift up a seat.
In this step, the standard toilet posture signal is a posture signal corresponding to some actions that may be generated when the toilet is further needed, and the posture signal is calibrated in advance based on the FMCW microwave sensor.
When the current body posture signal is matched with the standard toilet bowl posture signal, the intelligent toilet bowl can be further judged to be needed, a toilet seat driving instruction is generated according to whether a seat needs to be used or not, the toilet seat driving instruction is sent to the intelligent toilet bowl, and the toilet seat driving instruction is used for controlling the intelligent toilet bowl to fall down or lift up the seat.
According to the invention, firstly, an environment frequency spectrum signal is obtained, then the actual distance information of a user in a preset detection area is obtained, when the distance between the user and a preset reference point is judged to be less than or equal to a preset first standard use distance, a closestool uncovering instruction is generated because that someone needs to use the closestool at the moment, then, when the current body posture signal is judged to be matched with the standard use closestool posture signal, when the judgment is yes, a closestool seat driving instruction is generated to drive the seat to fall or lift, and comprehensive judgment is carried out by combining the distance and the posture, so that the production cost is reduced, the false triggering of a light source is avoided, accurate control is realized, and the use requirements of the user are further met.
In another embodiment of the present invention, as shown in fig. 2, the standard use toilet position signal includes a use ready position signal and a non-use ready position signal; wherein, the ready posture signal needing to use the seat ring is a posture signal corresponding to the action which the female can do when using the intelligent closestool and the male defecate. The non-use seat ready posture signal is a posture signal corresponding to the action that the male will do when urinating.
The toilet seat driving command comprises a seat falling command and a seat lifting command;
step S500: will current health posture signal and the standard of prestoring use closestool posture signal to compare to judge current health posture signal with whether the standard uses closestool posture signal to match, when judging for yes, generate toilet seat drive instruction, and will toilet seat drive instruction sends intelligent closestool, toilet seat drive instruction is used for controlling intelligent closestool and falls or lifts the seat, specifically includes:
step S510: comparing the current body posture signal with the seat ring preparation posture signal needing to be used and the seat ring preparation posture signal not needing to be used, and judging whether the current body posture signal is matched with the seat ring preparation posture signal needing to be used or not or is matched with the seat ring preparation posture signal not needing to be used;
this step is to determine whether the current body posture signal matches the usage-free seat preparation posture signal or the usage-free seat preparation posture signal.
Step S520: if the current body posture signal is judged to be the ready posture signal of the toilet seat needing to be used, generating a toilet seat falling instruction, and sending the toilet seat falling instruction to the intelligent toilet, wherein the toilet seat falling instruction is used for controlling the intelligent toilet to fall into the toilet seat, and the intelligent toilet seat falling instruction is used for controlling the toilet seat to be converted into a horizontal state;
specifically, when it is determined that the current body posture signal matches the ready-to-use seat ring posture signal, a seat ring is required to be used, and a seat ring drop command is generated.
Step S530: and judging that the current body posture signal is matched with the prepared posture signal without using a seat ring, generating a seat ring lifting instruction, and sending the seat ring lifting instruction to the intelligent closestool, wherein the seat ring lifting instruction is used for controlling the intelligent closestool to lift the seat ring, and the intelligent closestool lifts the seat ring to be in a non-horizontal state for controlling the seat ring to be converted.
Further, when the current body posture signal is judged to be matched with the non-use seat ring preparation posture signal, a seat ring lifting instruction is generated.
In another embodiment of the present invention, the intelligent toilet further comprises a detection device for detecting the pressure applied to the seat by the user, wherein the pressure applied to the seat by the user is specifically the pressure applied to the seat by the user when the user lifts or presses the seat by hand.
Further, the FMCW microwave inductor-based toilet seat control method further comprises:
and acquiring pressure applied to the seat when a user lifts up or presses down the seat by hands based on the detection device, recording the pressure as current pressure, judging whether the current pressure is greater than equal to or equal to preset standard pressure, and generating a seat acceleration starting instruction, wherein the seat acceleration starting instruction is used for controlling the intelligent closestool to quickly fall or lift the intelligent seat at a first speed.
Further, in order to consider the situation that the intelligent closestool needs to be used urgently, if the intelligent closestool needs to be put down urgently, the seat ring needs to be put down, a user can apply external force to press down or lift up the seat ring by hands, then the current pressure is generated at the moment, and the current pressure is larger than the preset standard pressure, so that a seat ring acceleration instruction is generated at the moment, the intelligent closestool is quickly started at a first speed higher than the normal falling and lifting speed, the requirement is further met, and the problem that the flexibility is insufficient due to inherent setting of the intelligent closestool in the prior art, and the use is further influenced is solved.
In another embodiment of the present invention, as shown in fig. 3, the ready-to-use-seat posture signal includes a turning motion signal, a stooping motion signal, and a squat motion signal;
step S100: the method comprises the following steps of acquiring an environmental frequency spectrum signal generated after detection in a preset detection area based on the FMCW microwave inductor in real time, wherein the method comprises the following steps:
step S001: when a user needs to use the seat ring, calibrating a signal corresponding to the turning motion of the user when the user uses the seat ring in advance based on the FMCW microwave inductor to serve as a turning motion signal;
step S002: when a user needs to use the seat ring, calibrating a signal corresponding to the stooping action of the user when the user uses the seat ring in advance based on the FMCW microwave inductor to serve as a stooping action signal;
step S003: when the user needs to use the seat ring, calibrating a signal corresponding to the action of squatting when the user uses the seat ring in advance based on the FMCW microwave sensor to serve as a squatting action signal.
Furthermore, through the steps S001-S003, the pre-calibration of the turning motion signal, the bending motion signal and the squatting motion signal is realized, and a stable data basis is provided for the subsequent data comparison.
In another embodiment of the present invention, as shown in fig. 4, step S100: the method includes the steps of acquiring an environmental frequency spectrum signal generated after detection in a preset detection area based on the FMCW microwave sensor in real time, and specifically including:
step S110: acquiring a current environment detection signal detected in a preset detection area by the FMCW microwave sensor;
further, the current environment monitoring signal is obtained as follows:
firstly, in the embodiment, the period and the bandwidth of a preset frequency modulation continuous wave transmitted based on an FMCW principle are obtained; the frequency modulation continuous wave is a modulation waveform with periodic variation generated by frequency modulation according to a fixed frequency range.
Then, the reflected electromagnetic wave reflected to the receiving antenna after the transmitted electromagnetic wave transmitted by the transmitting antenna meets the measured object in the preset detection area and the frequency-modulated continuous wave when the receiving antenna receives the reflected electromagnetic wave are continuously obtained and recorded as the frequency-mixed frequency-modulated wave, wherein the measured object is the user in this embodiment.
And then, mixing the frequency-mixing frequency modulation waves with the corresponding reflected electromagnetic waves to obtain intermediate frequency signals, wherein the intermediate frequency signals are the current environment detection signals.
In this step, after the period and bandwidth of the frequency modulated continuous wave are preset, the frequency of the transmitted wave is modulated in a fixed frequency range, so that the electromagnetic wave is transmitted to the preset detection area in a frequency sweeping manner.
Specifically, if the transmitted wave is F1 at time t1, the transmitted wave is frequency-modulated in a predetermined fixed frequency range at the next time, so that the transmitted wave is F2 at time t 2. The frequencies of the transmitted wave F1 and the transmitted wave F2 are different.
Further, the frequency modulated continuous wave may be a triangular wave, a sawtooth wave, or other continuous waves with a preset period and bandwidth. The frequency modulated continuous wave may be generated by generating a fixed frequency from an oscillator and continuously frequency modulating the frequency by a frequency modulator through the fixed frequency to generate the frequency modulated continuous wave.
At time t1, a transmitting electromagnetic wave with frequency f1 is continuously emitted into the preset detection area through a transmitting antenna, and the transmitting wave is the transmitting electromagnetic wave. After the emission electromagnetic wave is sent out, the emission electromagnetic wave can be reflected after encountering a measured object in the detection area of the intelligent closestool, and at the time t2, the reflected electromagnetic wave is received by a receiving antenna. The frequency of the reflected electromagnetic wave is also f 1. At this time, since the frequency of the transmitted wave is continuously modulated, the frequency of the transmitted wave is modulated to f2 after the time t1 to t2 is swept.
Specifically, when a transmission electromagnetic wave is emitted to a reflected electromagnetic wave and received by a receiving antenna, a mixing frequency modulation wave when the reflected electromagnetic wave is received is obtained at the same time, and the cycle is one cycle. There are a number of such cycles over time when the FMCW microwave inductor is in operation. In each cycle, a transmitted electromagnetic wave, a reflected electromagnetic wave, and a mixed frequency modulated wave are acquired. If the transmitted electromagnetic wave, the reflected electromagnetic wave and the mixed frequency modulation wave in one cycle period form a group of data, a plurality of groups of data are continuously acquired in the continuous work of the FMCW microwave sensor. Namely: the transmitted electromagnetic waves, the reflected electromagnetic waves and the mixed frequency modulated waves are continuously acquired.
When the frequency of the mixed frequency modulation wave is f2 and the frequency of the reflected electromagnetic wave is f1, after mixing, the frequency Δ f of the intermediate frequency signal is the difference between the frequency of the current mixed frequency modulation wave and the frequency of the reflected electromagnetic wave, that is, Δ f ═ f1-f2|。
That is, the current environment detection signal is a set of all analog signals detected by the FMCW microwave sensor within a preset detection range.
Step S120: and generating an environment frequency spectrum signal according to the current environment detection signal.
In another embodiment of the present invention, as shown in fig. 5-6, the FMCW microwave sensor includes an antenna group, and the antenna group includes at least one transmitting antenna and at least three receiving antennas, wherein a first receiving antenna is disposed in parallel with a second receiving antenna, the transmitting antenna is disposed directly above the first receiving antenna, and a third receiving antenna is disposed in parallel with the transmitting antenna and is located directly above the second receiving antenna;
the relative positions of the receiving antenna and the transmitting antenna are set as shown on the left side in fig. 5, and the right side in fig. 5 is the projection information of the measured object detected by the FMCW microwave sensor on the projection plane. In the present embodiment, the transmitting antenna is illustrated as a transmitting antenna 1, the first receiving antenna is illustrated as a receiving antenna 1, the second receiving antenna is illustrated as a receiving antenna 2, and the third receiving antenna is illustrated as a receiving antenna 3.
The environment spectrum signal comprises a first antenna spectrum signal, a second antenna spectrum signal and a third antenna spectrum signal, wherein the first antenna spectrum signal is acquired after passing through the first receiving antenna, the second antenna spectrum signal is acquired after passing through the second receiving antenna, and the third antenna spectrum signal is acquired after passing through the third receiving antenna;
the first antenna frequency spectrum signal, the second antenna frequency spectrum signal and the third antenna frequency spectrum signal comprise N frequency points, and each frequency point corresponds to frequency point amplitude information and frequency point distance information respectively;
step S200: acquiring actual user distance information in a preset detection area according to the environment spectrum signal, specifically comprising:
step S210: frequency point amplitude information of frequency points with the same sequence number in the first antenna frequency spectrum signal, the second antenna frequency spectrum signal and the third antenna frequency spectrum signal is respectively extracted;
in this step, frequency point amplitude information and frequency point distance information corresponding to each frequency point are obtained by obtaining a frequency spectrum signal, so that a one-to-one correspondence relationship between amplitudes and distances of the same frequency points is established. That is, one amplitude information corresponding to one frequency point in the frequency spectrum corresponds to one distance information. Compared with the situation that one amplitude corresponds to a plurality of distances in the prior art, the intelligent closestool disclosed by the invention realizes that one amplitude corresponds to one distance on the basis of the acquired frequency spectrum information, solves the technical problems in the prior art, improves the controllable precision of the intelligent closestool, greatly improves the user experience, and has extremely high practicability and commercial value.
Step S220: judging whether frequency point amplitude information of frequency points with the same sequence number in the frequency spectrum information changes or not;
in this step, it is determined whether the frequency point amplitude information of the frequency points with the same sequence number in each of the spectrum information changes, that is, it is determined whether there is a dynamic object to be measured at the same distance point at different time points.
Step S230: if the judgment result is yes, extracting the frequency point distance information corresponding to the changed frequency point amplitude information, and recording the frequency point distance information as the actual user distance information in the preset detection area.
In this step, when the judgment result is yes, the frequency point amplitude information of the frequency points with the same sequence number in each frequency spectrum information is judged to be changed.
Specifically, at time t3, the frequency bin with sequence number 1 has amplitude X. At the time t4, the amplitude of the frequency point with the sequence number of 1 is Y, and the amplitude information corresponding to the frequency point with the sequence number of 1 changes, which means that a dynamic measured object appears at the distance point corresponding to the amplitude information at this time.
And then, extracting the frequency point distance information corresponding to the changed frequency point amplitude information, namely obtaining the distance information of the dynamic measured object.
In another embodiment of the present invention, as shown in fig. 7 to 8, in step S400, the step of obtaining the current body posture signal of the user according to the environment spectrum signal specifically includes:
step S410: acquiring a horizontal plane angle between a user and the FMCW microwave inductor according to the first antenna spectrum signal and the second antenna spectrum signal;
as shown in fig. 8, the horizontal plane angle acquisition process is as follows:
first, the distance between the two receiving antennas is R, and the angle of the object to be measured is θ.
Further, in the first antenna spectrum signal, the frequency point is panHaving a phase of alphaan＝arctan(yan/xan) (ii) a The following can be obtained after the formula is changed:
similarly, in the second antenna frequency spectrum signal, the frequency point pbnOf phase a thereofbn＝arctan(ybn/xbn) (ii) a The following can be obtained after the formula is changed:
therefore, for the frequency point with the sequence number n, the calculation formula of the phase difference between the first antenna spectrum signal and the second antenna spectrum signal is as follows: delta alphan＝αan-αbn；
According to the trigonometric formula
Therefore, it can be seen that:
therefore, it can be obtained: delta alphan＝arctan((yanxbn-xanybn)/(xanxbn+yanybn))；
In this way, the spectral phase difference between the first antenna spectral signal and the second antenna spectral signal can be obtained through the first antenna spectral signal and the second antenna spectral signal.
Then, acquiring an antenna linear distance between the two receiving antennas;
specifically, the distance between the two receiving antennas is set by a person skilled in the art when setting hardware, that is, R is marked in fig. 8, that is, the antenna linear distance R between the two receiving antennas is a known quantity.
Specifically, the plane angle information of the object to be measured and the FMCW microwave sensor is obtained through the following formula according to the frequency spectrum phase difference and the antenna linear distance:
wherein theta is the plane angle information of the object to be measured and the FMCW microwave sensor, F0Frequency of center frequency of transmission of FMCW microwave inductor, c speed of light, Delta alphanR is the linear distance of the antenna.
Specifically, as shown in fig. 8 and 8, the calculation formula of the angle of the projection of the object to be measured on the XZ plane detected by the FMCW microwave sensor is: θ is arcsin (l/R), where l is the difference between the distances between the two receiving antennas and the measured object.
Specifically, l is calculated as follows:
setting the center frequency of the FMCW microwave inductor transmission to F0Then its wavelength is:
wherein c is the speed of light; within a complete period of 2 pi, there is a complete wavelength of λ, and the phase difference between the reflected electromagnetic wave 1 and the reflected electromagnetic wave 2 is Δ αnTherefore, the distance difference thereof
Then, will
Substituting θ ═ arcsin (l/R), we can obtain:
namely:
therefore, the plane angle information of the measured object and the FMCW microwave sensor can be obtained.
In another embodiment of the present invention, there is also provided a method for calculating the plane angle information of the object to be measured and the FMCW microwave sensor, as shown in fig. 8, the distance d between the receiving antenna 1 and the object to be measured can be calculated according to the reflected electromagnetic wave 1 received by the receiving antenna 1 and the reflected electromagnetic wave 2 received by the receiving antenna 2aAnd dbWherein d isaThe distance between the receiving antenna 1 and the measured object; dbThe distance between the receiving antenna 2 and the measured object;
according to fig. 5 and 8, since the distance R between the receiving antenna 1 and the receiving antenna 2 is very small, the reflected electromagnetic wave 1 of the object to be measured reflected to the receiving antenna 1 and the reflected electromagnetic wave 2 of the object to be measured reflected to the receiving antenna 2 can be regarded as parallel electromagnetic waves, so that: l ═ da-db(ii) a Thus, the value of l can be obtained.
Since the value of R is known, the angle of the projection of the object to be measured on the XZ plane detected by the FMCW microwave sensor can be obtained by substituting the values of l and R into the formula θ arcsin (l/R).
Step S420: acquiring a vertical plane angle between a user and the FMCW microwave inductor according to the second antenna spectrum signal and the third antenna spectrum signal;
similarly, the vertical plane angle can be obtained by the receiving antenna 2 and the receiving antenna 3, and the specific obtaining method is the same as the above method for obtaining the horizontal plane angle, and is not further described in this application.
Step S430: and generating a current body posture signal according to the actual distance information of the user, the horizontal plane angle and the vertical plane angle.
In this embodiment, a squat movement of the user is taken as an example, and in the squat process, the generated movement change corresponds to each distance data, and then, the three-dimensional coordinates in the coordinate axis shown on the right side in fig. 5 can be obtained by integrating the horizontal plane angle and the vertical plane angle, so as to further achieve the obtaining of the current body posture signal.
Therefore, the FMCW microwave inductor realizes the acquisition of the three-dimensional coordinate of the posture action before the toilet seat is used in the three-dimensional coordinate system established based on the FMCW microwave inductor, so that the comparison between the follow-up action and the pre-stored standard action is convenient, and the function of accurately controlling the toilet seat is achieved.
In another embodiment of the present invention, as shown in fig. 9, step S120: generating an environment spectrum signal according to the current environment detection signal, specifically comprising:
step S121: converting the current environment detection signal into an environment detection digital signal;
step S122: converting the environment detection digital signal into a frequency domain environment signal through Fourier transform;
step S123: and generating the environment frequency spectrum signal according to the frequency domain environment signal.
Specifically, in this step, the current environment detection signal is an analog signal, and is converted into the environment detection digital signal, so that subsequent data processing is facilitated, and further, conversion of the environment spectrum signal is realized through sequential conversion.
In another embodiment of the present invention, as shown in fig. 10, step S121: converting the current environment detection signal into an environment detection digital signal, specifically comprising:
step S1211: filtering and amplifying the current environment detection signal to obtain an amplified environment signal with an amplified amplitude;
in particular, in the step, the subsequent signal processing is facilitated by performing filtering and amplification processing.
Step S1212: and performing analog-to-digital conversion on the amplified environment signal to obtain the environment detection digital signal.
In another embodiment of the invention, there is also provided a toilet seat control system based on an FMCW microwave sensor, the system comprising a smart toilet and an FMCW microwave sensor, the FMCW microwave sensor being in communication with the smart toilet, the FMCW microwave sensor being mounted on a wall on the rear side of the smart toilet; wherein the content of the first and second substances,
the FMCW microwave sensor is used for detecting a preset detection area in real time and generating an environment frequency spectrum signal after detection;
the FMCW microwave sensor is used for acquiring user actual distance information in a preset detection area according to the environment spectrum signal, wherein the user actual distance information is distance information between a preset reference point and a user, the preset reference point is preset, and the preset reference point is the position of the FMCW microwave sensor;
the FMCW microwave sensor is used for judging whether the distance between the user and a preset reference point is less than or equal to a preset first standard use distance or not according to the actual distance information of the user;
the FMCW microwave sensor is used for generating a closestool cover opening instruction when the fact that the distance between a user and a preset reference point is smaller than or equal to a preset first standard using distance is judged, sending the closestool cover opening instruction to the intelligent closestool, and meanwhile obtaining a current body posture signal of the user according to the environment frequency spectrum signal, wherein the closestool cover opening instruction is used for controlling the intelligent closestool to open an upper cover;
the FMCW microwave sensor is used for comparing the current body posture signal with a pre-stored standard toilet bowl posture signal, judging whether the current body posture signal is matched with the standard toilet bowl posture signal or not, generating a toilet seat driving instruction when the current body posture signal is matched with the standard toilet bowl posture signal, and sending the toilet seat driving instruction to the intelligent toilet bowl, wherein the toilet seat driving instruction is used for controlling the intelligent toilet bowl to fall down or lift up a seat.
In another embodiment of the invention, the intelligent closestool comprises a closestool main control board, a seat ring driving mechanism and an upper cover driving mechanism, wherein the closestool main control board is in communication connection with the FMCW microwave sensor, and the seat ring driving mechanism and the upper cover driving mechanism are both connected with the closestool main control board.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A toilet seat control method based on an FMCW microwave sensor is characterized in that the method is applied to an intelligent toilet, the FMCW microwave sensor is installed on a wall on the rear side of the intelligent toilet, and the method specifically comprises the following steps:
step S100: acquiring an environment frequency spectrum signal generated after the FMCW microwave inductor detects a preset detection area in real time;
step S200: acquiring user actual distance information in a preset detection area according to the environment frequency spectrum signal, wherein the user actual distance information is distance information between a preset reference point and a user, the preset reference point is preset, and the preset reference point is the position of the FMCW microwave inductor;
step S300: judging whether the distance between the user and a preset reference point is less than or equal to a preset first standard use distance or not according to the actual user distance information;
step S400: when the distance between the user and the preset reference point is judged to be smaller than or equal to the preset first standard use distance, a closestool cover opening instruction is generated and sent to the intelligent closestool, and meanwhile, the current body posture signal of the user is obtained according to the environment frequency spectrum signal, wherein the closestool cover opening instruction is used for controlling the intelligent closestool to open the upper cover;
step S500: and comparing the current body posture signal with a pre-stored standard using a toilet bowl posture signal, judging whether the current body posture signal is matched with the standard using the toilet bowl posture signal or not, and generating a toilet seat driving instruction when the judgment is yes, and sending the toilet seat driving instruction to the intelligent toilet bowl, wherein the toilet seat driving instruction is used for controlling the intelligent toilet bowl to fall down or lift up a seat.
2. The FMCW microwave sensor-based toilet seat control method of claim 1, wherein the standard use toilet position signals include a use seat ready position signal and a no use seat ready position signal;
the toilet seat driving command comprises a seat falling command and a seat lifting command;
step S500: will current health posture signal and the standard of prestoring use closestool posture signal to compare to judge current health posture signal with whether the standard uses closestool posture signal to match, when judging for yes, generate toilet seat drive instruction, and will toilet seat drive instruction sends intelligent closestool, toilet seat drive instruction is used for controlling intelligent closestool and falls or lifts the seat, specifically includes:
step S510: comparing the current body posture signal with the seat ring preparation posture signal needing to be used and the seat ring preparation posture signal not needing to be used, and judging whether the current body posture signal is matched with the seat ring preparation posture signal needing to be used or not or is matched with the seat ring preparation posture signal not needing to be used;
step S520: if the current body posture signal is judged to be the ready posture signal of the toilet seat needing to be used, generating a toilet seat falling instruction, and sending the toilet seat falling instruction to the intelligent toilet, wherein the toilet seat falling instruction is used for controlling the intelligent toilet to fall into the toilet seat, and the intelligent toilet seat falling instruction is used for controlling the toilet seat to be converted into a horizontal state;
step S530: and judging that the current body posture signal is matched with the prepared posture signal without using a seat ring, generating a seat ring lifting instruction, and sending the seat ring lifting instruction to the intelligent closestool, wherein the seat ring lifting instruction is used for controlling the intelligent closestool to lift the seat ring, and the intelligent closestool lifts the seat ring to be in a non-horizontal state for controlling the seat ring to be converted.
3. A FMCW microwave sensor-based toilet seat control method as claimed in claim 1, wherein the ready-to-use seat posture signal includes a turn-around action signal, a stoop action signal, and a squat action signal;
step S100: the method comprises the following steps of acquiring an environmental frequency spectrum signal generated after detection in a preset detection area based on the FMCW microwave inductor in real time, wherein the method comprises the following steps:
step S001: when a user needs to use the seat ring, calibrating a signal corresponding to the turning motion of the user when the user uses the seat ring in advance based on the FMCW microwave inductor to serve as a turning motion signal;
step S002: when a user needs to use the seat ring, calibrating a signal corresponding to the stooping action of the user when the user uses the seat ring in advance based on the FMCW microwave inductor to serve as a stooping action signal;
step S003: when the user needs to use the seat ring, calibrating a signal corresponding to the action of squatting when the user uses the seat ring in advance based on the FMCW microwave sensor to serve as a squatting action signal.
4. A toilet seat control method based on FMCW microwave sensors as claimed in any one of claims 1-3,
the FMCW microwave inductor comprises an antenna group, wherein the antenna group comprises at least one transmitting antenna and at least three receiving antennas, a first receiving antenna and a second receiving antenna are arranged in parallel, the transmitting antenna is arranged right above the first receiving antenna, and a third receiving antenna is arranged parallel to the transmitting antenna and is positioned right above the second receiving antenna;
the environment spectrum signal comprises a first antenna spectrum signal, a second antenna spectrum signal and a third antenna spectrum signal, wherein the first antenna spectrum signal is acquired after passing through the first receiving antenna, the second antenna spectrum signal is acquired after passing through the second receiving antenna, and the third antenna spectrum signal is acquired after passing through the third receiving antenna;
the first antenna frequency spectrum signal, the second antenna frequency spectrum signal and the third antenna frequency spectrum signal comprise N frequency points, and each frequency point corresponds to frequency point amplitude information and frequency point distance information respectively;
step S200: acquiring actual user distance information in a preset detection area according to the environment spectrum signal, specifically comprising:
step S210: frequency point amplitude information of frequency points with the same sequence number in the first antenna frequency spectrum signal, the second antenna frequency spectrum signal and the third antenna frequency spectrum signal is respectively extracted;
step S220: judging whether frequency point amplitude information of frequency points with the same sequence number in the frequency spectrum information changes or not;
step S230: if the judgment result is yes, extracting the frequency point distance information corresponding to the changed frequency point amplitude information, and recording the frequency point distance information as the actual user distance information in the preset detection area.
5. The FMCW microwave sensor-based toilet seat control method as claimed in claim 4, wherein the step of obtaining the current body posture signal of the user from the environmental spectrum signal in step S400 includes:
step S410: acquiring a horizontal plane angle between a user and the FMCW microwave inductor according to the first antenna spectrum signal and the second antenna spectrum signal;
step S420: acquiring a vertical plane angle between a user and the FMCW microwave inductor according to the second antenna spectrum signal and the third antenna spectrum signal;
step S430: and generating a current body posture signal according to the actual distance information of the user, the horizontal plane angle and the vertical plane angle.
6. The FMCW microwave inductor-based toilet seat control method as claimed in claim 4, wherein the step S100: the method includes the steps of acquiring an environmental frequency spectrum signal generated after detection in a preset detection area based on the FMCW microwave sensor in real time, and specifically including:
step S110: acquiring a current environment detection signal detected in a preset detection area by the FMCW microwave sensor;
step S120: and generating an environment frequency spectrum signal according to the current environment detection signal.
7. The FMCW microwave inductor-based toilet seat control method as set forth in claim 6, wherein the step S120: generating an environment spectrum signal according to the current environment detection signal, specifically comprising:
step S121: converting the current environment detection signal into an environment detection digital signal;
step S122: converting the environment detection digital signal into a frequency domain environment signal through Fourier transform;
step S123: and generating the environment frequency spectrum signal according to the frequency domain environment signal.
8. The FMCW microwave sensor-based toilet seat control method as set forth in claim 1, wherein the step S121: converting the current environment detection signal into an environment detection digital signal, specifically comprising:
step S1211: filtering and amplifying the current environment detection signal to obtain an amplified environment signal with an amplified amplitude;
step S1212: and performing analog-to-digital conversion on the amplified environment signal to obtain the environment detection digital signal.
9. A toilet seat control system based on an FMCW microwave sensor, characterized in that the system comprises a smart toilet and the FMCW microwave sensor, wherein the FMCW microwave sensor is connected with the smart toilet in a communication way, and the FMCW microwave sensor is installed on a wall at the rear side of the smart toilet; wherein the content of the first and second substances,
the FMCW microwave sensor is used for detecting a preset detection area in real time and generating an environment frequency spectrum signal after detection;
the FMCW microwave sensor is used for acquiring user actual distance information in a preset detection area according to the environment spectrum signal, wherein the user actual distance information is distance information between a preset reference point and a user, the preset reference point is preset, and the preset reference point is the position of the FMCW microwave sensor;
the FMCW microwave sensor is used for judging whether the distance between the user and a preset reference point is less than or equal to a preset first standard use distance or not according to the actual distance information of the user;
the FMCW microwave sensor is used for generating a closestool cover opening instruction when the fact that the distance between a user and a preset reference point is smaller than or equal to a preset first standard using distance is judged, sending the closestool cover opening instruction to the intelligent closestool, and meanwhile obtaining a current body posture signal of the user according to the environment frequency spectrum signal, wherein the closestool cover opening instruction is used for controlling the intelligent closestool to open an upper cover;
the FMCW microwave sensor is used for comparing the current body posture signal with a pre-stored standard toilet bowl posture signal, judging whether the current body posture signal is matched with the standard toilet bowl posture signal or not, generating a toilet seat driving instruction when the current body posture signal is matched with the standard toilet bowl posture signal, and sending the toilet seat driving instruction to the intelligent toilet bowl, wherein the toilet seat driving instruction is used for controlling the intelligent toilet bowl to fall down or lift up.
10. The FMCW microwave sensor-based toilet seat control system of claim 9, wherein the smart toilet includes a toilet main control board, a seat driving mechanism, and an upper cover driving mechanism, the toilet main control board is communicatively connected to the FMCW microwave sensor, and the seat driving mechanism and the upper cover driving mechanism are both connected to the toilet main control board.
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Application publication date: 20220415 |