CN108252378A - A kind of FMCW tellurometer surveys induced intelligent closestool and detection method - Google Patents
A kind of FMCW tellurometer surveys induced intelligent closestool and detection method Download PDFInfo
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- CN108252378A CN108252378A CN201810119041.0A CN201810119041A CN108252378A CN 108252378 A CN108252378 A CN 108252378A CN 201810119041 A CN201810119041 A CN 201810119041A CN 108252378 A CN108252378 A CN 108252378A
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- 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
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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
- A47K13/24—Parts or details not covered in, or of interest apart from, groups A47K13/02 - A47K13/22, e.g. devices imparting a swinging or vibrating motion to the seats
- A47K13/30—Seats having provisions for heating, deodorising or the like, e.g. ventilating, noise-damping or cleaning devices
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03D9/00—Sanitary or other accessories for lavatories ; Devices for cleaning or disinfecting the toilet room or the toilet bowl; Devices for eliminating smells
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/06—Systems determining position data of a target
- G01S13/08—Systems for measuring distance only
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- Engineering & Computer Science (AREA)
- Public Health (AREA)
- Health & Medical Sciences (AREA)
- Remote Sensing (AREA)
- Radar, Positioning & Navigation (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Aviation & Aerospace Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Epidemiology (AREA)
- Radar Systems Or Details Thereof (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a kind of FMCW tellurometer surveys induced intelligent closestool and detection method, intelligent closestool includes toilet lid, renovates driving mechanism, flashing valve, seat ring heating system and closestool main controller, further includes FMCW microwave remote sensors.The spectrum information that FMCW microwave remote sensors rely primarily on signal judges the distance of testee, so as to efficiently avoid because of the influence of sensor outer housing, closestool body ceramics to ranging precision caused by the attenuation of microwave signal, FMCW microwave remote sensors also eliminate influence of the people of different building shape for microwave remote sensor Distance Judgment precision, so switch cover or heating seat ring can be decided whether more accurately.Since FMCW microwave remote sensors can detect the faint actions such as small shaking, breathing and the heartbeat of human body itself, so as to judge the end time of Male urine, and then the function of auto-flushing can be realized.FMCW tellurometer survey induced intelligent closestools can provide better user experience.
Description
Technical field
This application involves FMCW tellurometer survey technologies fields, and in particular to a kind of FMCW tellurometer surveys induced intelligent closestool and
Detection method, can by FMCW microwave remote sensors detect human body distance, with realize the automatic cover-turning of intelligent closestool, Guan Gai,
Bath or seat ring heating function.
Background technology
With the increasingly promotion of people's quality of life, requirement of the most people to sanitary ware is also higher and higher.And horse
One of bucket sanitary ware higher as frequency of use, people for the demand of intelligent closestool it is increasing while, it is also right
Its performance requirement is higher and higher.For example, user more needs, a kind of malfuncton probability is small, performance is stable, reliability is high
The intelligent closestool of energy precision ranging.This high performance intelligent closestool only detects that user is reached in the range of certain distance,
Ability automatic lid closing/opening or preheating seat ring.
Traditional human body induced intelligent closestool, most of infrared sensors used or Doppler's microwave remote sensor.
It is well known that infrared sensor due to the reflecting rate of the color to reverberation and reflecting surface sensitivity, so distance not
Stablize；And it needs to open a window, and has certain influence to structure, the appearance of closestool.So intelligent closestool does not have nearly all at present
Human testing is carried out by the way of infrared.
The high-frequency electromagnetic wave energy of microwave remote sensor transmitting penetrates the media such as plastics, ceramics, applies to energy in intelligent closestool
Ensure the complete and beautiful of toilet structure.What Doppler's microwave remote sensor detected is the velocity information of dynamic object, often
With the intensity of signal come roughly estimated distance.But its signal strength can be influenced by multi-party factor, such as：Measured object body
Space size of size, movement range size and use environment etc..So Doppler's microwave remote sensor can not be examined accurately
Measure the specific distance of human body.And Doppler's microwave remote sensor is used to carry out the intelligent closestool of human testing, also have larger
Apart from unstability.
Patent CN102445696 mentions a kind of human body detection device of intelligent closestool, which is a kind of Doppler's microwave
Inductor.It makes use of sensor output Doppler signal intensity variation regularity, such as：Object close to when Doppler letter
Number amplitude general trend be it is increasing, and object far from when signal amplitude general trend be less and less.By the rule,
The invention combines the limitation to signal strength and frequency, has reached a better detection result.Which is changing to a certain degree
Be apt to detection result, but general detection device is mounted on inside closestool, different closestools due to its plastics, ceramics material or
The difference of thickness is also different for the attenuation of microwave signal intensity；And the people of different building shape, the microwave signal intensity of reflection
Also it is different.And signal strength is also one in the condition uncapped of invention triggering, the consistency of distance of reaction so it is uncapped
It is unsatisfactory with reliability.It is installed in two kinds of different ceramics of thickness for example, being invented, then decay for signal larger
Ceramics, distance of reaction will become near.Since Doppler's microwave sensor is only able to detect the larger human body of movement range, and
When there is male's urine in front of closestool, since human action amplitude very little, Doppler's microwave sensor can not detect at this time
To whether someone stands in front of closestool, so as to cannot judge whether urine male has been moved off and whether should wash by water.
Invention content
Problem to be solved by this invention is：1st, the components pair such as inductor shell, closestool body ceramics, toilet lid are eliminated
The influence of the precision of tellurometer survey；2nd, it eliminates due to influence of the human somatotype difference to the precision of tellurometer survey；3rd, it is accurate
Human body range information is detected, it is to leave also to be proximate to more precisely to judge human body；4th, it can detect standing in front of closestool only
There is the human body of fine motion, it can be determined that whether the male of urine, which has completed, is left, so as to decide whether to wash by water.
In a first aspect, the present invention proposes a kind of FMCW tellurometer surveys induced intelligent closestool in order to solve the above problem, lead to
It crosses FMCW microwave remote sensors and accurately detects human body distance, uncap so as to fulfill closestool automation, close lid, bath or seat ring heating
Etc. functions.It includes toilet lid, renovates driving mechanism, flashing valve, seat ring heating system and closestool main controller, renovates driving mechanism
It is connect respectively with toilet lid and closestool main controller, flashing valve is electromagnetic flushing valve, is installed on jet water spout, further includes FMCW
Microwave remote sensor, FMCW microwave remote sensors include transmitting antenna, reception antenna, fmcw radar transceiver, FM circuit, signal filter
Wave device, signal amplifier and microcontroller；Transmitting antenna and reception antenna are received and dispatched as the sending and receiving end measured with fmcw radar respectively
Device is electrically connected, and pass sequentially through traffic filter and the signal amplifier of fmcw radar transceiver are electrically connected with microcontroller, and
And it is electrically connected by FM circuit and microcontroller；Microcontroller is electrically connected with closestool main controller.
Further, renovate driving mechanism include driving motor and overturning component, overturning component be gear set, gear set and
Toilet lid connects, for toilet lid to be driven to overturn folding.
Further, flashing valve is electrical connected with closestool main controller, for carrying out auto-flushing.
Further, seat ring heating system is installed on inside seat ring, and is electrical connected with closestool main controller, for counter race
It is heated.
Further, FMCW microwave remote sensors are mounted in closestool.
Further, microcontroller include DA output units and be sequentially connected the AD conversion unit connect, digital filtering unit,
Digital signal processing unit and output unit, DA output units are electrically connected with FM circuit, and AD conversion unit amplifies with signal
Device connects, and output unit is electrically connected with closestool main controller.
Second aspect, the present invention provides a kind of detection method based on above-mentioned FMCW tellurometer surveys induced intelligent closestool,
Include the following steps：
S001：Control FM circuit continuously generates modulated signal, and modulated signal control fmcw radar transceiver passes through micro-
Wave transmitting antenna emits the linear frequency sweep electromagnetic wave with certain bandwidth outward；
S002：Intermediate-freuqncy signal after treatment is obtained, the intermediate-freuqncy signal is by fmcw radar transceiver by receiving day
Line receives echo and generates；
S003：Calculate the frequency spectrum and phase spectrum of intermediate-freuqncy signal, by frequency spectrum and phase spectrum judge personnel movement speed,
Moving direction and positional distance；
S004：Renovated according to the judgement movement speed of personnel, moving direction and positional distance control closestool, seat ring heating or
Bath.
Further, after obtaining intermediate-freuqncy signal, the frequency spectrum and phase spectrum of useful signal is obtained by fft algorithm, calculated
Frequency spectrum and each frequency point of phase spectrum correspond to the information of the testee in different distance, the lower frequency point institute of frequency
Corresponding distance is nearer, and the distance corresponding to the higher frequency point of frequency is more remote.
FMCW tellurometer surveys induced intelligent closestool provided by the invention and detection method, it is micro- due to being equipped with FMCW in closestool
Wave sensor, the spectrum information that FMCW microwave remote sensors rely primarily on signal judges the distance of testee, so as to effectively keep away
Exempt from because of the influence of sensor outer housing, closestool body ceramics to ranging precision caused by the attenuation of microwave signal.If for example,
If there are two types of different closestool body A and B, due to its ceramic thickness difference, so closestool A is less than attenuation caused by microwave
In closestool B.When have personnel go to similarly apart from when, the FMCW microwave remote sensors in closestool A have detected in signal spectrum have
The value that the amplitude of one frequency point f is close to 0 from one becomes higher value a, and the FMCW microwave remote sensors in closestool B can then detect identical
The value that the amplitude of frequency point f is close to 0 from one becomes higher value b, while b is less than a.But it is not just affected because b is smaller than a
Judgement of the FMCW microwave remote sensors to the distance of measured object, because the increase of their amplitudes appears at same frequency point f,
Corresponding distance is also identical.Similarly, FMCW microwave remote sensors also eliminate the people of different building shape for microwave remote sensor away from
From the influence for judging precision.It can be seen that the ranging foundation of FMCW microwave remote sensors is signal frequency, with Doppler institute foundation
Signal strength be entirely different.Signal strength is easy to by measured object physical size, movement range size and using ring
The space size in border influences, and signal frequency is not influenced by above-mentioned factor.At the same time, due to FMCW microwave remote sensors
The faint actions such as small shaking, breathing and the heartbeat of human body itself can be detected, so as to judge the end of Male urine
Time, and then can realize the function of auto-flushing.And Doppler's microwave remote sensor cannot detect above-mentioned faint action.It is comprehensive
Upper described, the FMCW tellurometer survey induced intelligent closestools for having FMCW microwave remote sensors can provide better user experience, and
Has higher reliability.
Description of the drawings
Fig. 1 is a kind of functional block diagram of intelligent closestool in embodiment；
Fig. 2 is the signal waveforms that people stands a long way off in a kind of embodiment；
Fig. 3 is the signal waveforms that people stands on hand in a kind of embodiment；
Fig. 4 is a kind of flow chart of detection method in embodiment.
Specific embodiment
The present invention is described in further detail below by specific embodiment combination attached drawing：
Embodiment one：
A kind of FMCW tellurometer surveys induced intelligent closestool is provided in the present embodiment, and which employs FMCW microwave remote sensors
Ranging is carried out, to realize auto-open-close lid, bath and the pre-warmed intelligent closestool of seat ring.FMCW microwave remote sensors are mounted on
On the inside of closestool rear cover.Certainly, in other embodiments, FMCW microwave remote sensors can also be mounted on closestool other positions.
As shown in Figure 1, the present embodiment includes：FMCW microwave remote sensors 1, renovate driving mechanism, closestool at closestool main controller 2
Lid 5, flashing valve 6 and seat ring heating system 7, wherein, it renovates driving mechanism and includes driving motor 3 and overturning component 4.Renovate drive
Motivation structure is connect respectively with toilet lid 5 and closestool main controller 2, and flashing valve is electromagnetic flushing valve, is installed on jet water spout.Specifically
, the driving motor 3 and closestool main controller 2 for renovating driving mechanism are electrically connected, and the overturning component 4 for renovating driving mechanism is gear
Group is mechanically connected with toilet lid 5, for toilet lid to be driven to overturn folding.
Wherein, FMCW microwave remote sensors 1 include：Microcontroller 11, transmitting antenna 12, reception antenna 13, fmcw radar transmitting-receiving
Device 14, FM circuit 15, traffic filter 16, signal amplifier 17.Transmitting antenna 12 and reception antenna 13 are as the receipts measured
Originator is electrically connected respectively with fmcw radar transceiver 14, and fmcw radar transceiver 14 passes sequentially through traffic filter 16 and letter
Number amplifier 17 is electrically connected, and be electrically connected by FM circuit 15 and microcontroller 11 with microcontroller 11.
Wherein, microcontroller 11 includes：DA output units 111, AD conversion unit 112, digital filtering unit 113, number letter
Number processing unit 114 and output unit 115.AD conversion unit 112, digital filtering unit 113, digital signal processing unit 114
It is sequentially connected and connects with output unit 115, DA output units 111 are electrically connected with leveling circuit 15, AD conversion unit 112 and signal
Amplifier 17 is electrically connected, and output unit 115 is electrically connected with closestool main controller 2.
FMCW tellurometer surveys induced intelligent closestool provided in this embodiment can accurately sense people by FMCW tellurometer surveys
Moving direction, movement speed and the positional distance of body, so as to accurately realize intelligent closestool switch cover, seat ring preheating
And flushing function.Sensitivity of the FMCW microwaves detection with height does not influence detection by closestool material thickness, human somatotype,
Therefore this intelligent closestool can accurately check the action of human body even if FMCW microwave remote sensors 1 are mounted in closestool, detection
As a result it is reliable.
Embodiment two：
A kind of detection method based on one MCW tellurometer survey induced intelligent closestools of above-described embodiment is present embodiments provided,
This detection method is used for detection of the intelligent closestool to human motion, and corresponding actions reaction is made with intelligent control closestool.
Specifically, as shown in figure 4, this detection method controls realization by microcontroller 11, include the following steps：
S001：Emit linear purpose sweep frequency electromagnetic wave；
DA output units 111 in microcontroller 11 control FM circuit 15, and continuously output modulated signal, the modulated signal are defeated
Enter the frequency modulation interface to fmcw radar transceiver 14.
Fmcw radar transceiver 14 can outward be emitted from the certain bandwidth of tool according to above-mentioned modulated signal by transmitting antenna 12
The frequency electromagnetic waves for having continuous frequency sweep.Its sweep velocity determines that frequency modulating signal is higher by the frequency of modulated signal, frequency sweep
Speed is faster.
S002：Obtain intermediate-freuqncy signal after treatment；
Emit electromagnetic wave after testee is encountered, echo can be generated.Fmcw radar transceiver 14 passes through reception antenna 13
Echo is received, since transmitting electromagnetic wave is linear frequency sweep electromagnetic wave, so fmcw radar transceiver 14 receives above-mentioned echo
When, the electromagnetic wave and the above-mentioned echo that are just emitting at this time have produced a difference on the frequency, by that will emit electromagnetic wave and above-mentioned time
Wave mixing can export an intermediate-freuqncy signal.
The intermediate-freuqncy signal contains the low frequency signal of modulating wave, adjusts the distance the influence of judgement to remove the low frequency signal,
So it needs to filter above-mentioned low frequency signal and other interference signals using traffic filter 16 so as to obtain useful signal.
S003：Processing calculates the frequency spectrum and phase spectrum of intermediate-freuqncy signal, and the movement of personnel is judged by frequency spectrum and phase spectrum
Speed, moving direction and positional distance；
Useful signal is carried out exchange amplification by signal amplifier 17 so that and wherein useful high frequency signal amplitude becomes strong, from
And it is more advantageous to the acquisition and analysis of microcontroller 11.
Amplified signal is AD converted by the AD conversion unit 112 in microcontroller 11, then passes through digital filtering unit
Shake in 113 sampling by filtration etc. makes an uproar and obtains final digital signal after wave, is carried out finally by digital signal processing unit 114
Series of algorithms is analyzed.
In digital signal processing unit 114, the frequency spectrum and phase spectrum of digital signal are obtained by fft algorithm first.Its
Each of frequency spectrum and phase spectrum frequency point correspond to the information of the testee in different distance, and the lower frequency point institute of frequency is right
The distance answered is nearer, and the distance corresponding to the higher frequency point of frequency is more remote.As shown in Fig. 2, when personnel stand a long way off, letter
Number frequency it is higher；As shown in figure 3, when personnel stand on hand, the frequency of signal is relatively low.Static object in order to prevent
The interference of (such as the static bucket being placed in front of closestool side) to detection, the meeting of FMCW microwave remote sensors 1 will be totally stationary
Object regards environmental background, does not consider its range information.
It is analyzed and determined by the above method, final human body range information, directional information and speed can be obtained
Information.
S004：Control closestool response.
If having detected personnel in detection range, and with certain speed close to closestool, when close to a certain pre-
If during distance value, then judge to need to open toilet lid 5 and counter race is preheated.If detect personnel in detection range
It is interior, and when far to a certain pre-determined distance value, then judge to need to close toilet lid 5 far from closestool with certain speed.
At the same time, microcontroller 11 will generate a control instruction and be sent to closestool main controller 2 by output unit 115.
For totally stationary object, the frequency spectrum and phase spectrum of signal be also be always maintained at it is constant, it is and micro- for having
The human body of little trick, phase spectrum can have apparent variation.If any just the male of urine stand in front of closestool, even if its
There is no initiatively acting, FMCW microwave remote sensors 1 can also detect its own shaking, breathing and heartbeat etc. according to phase spectrum
Faint action, so as to judge there are personnel still to stand in front of closestool；When the Male urine is complete to be left, FMCW microwave remote sensors
1 can judge that the micro-tremor signal in front of closestool has disappeared at once, and microcontroller 11 generates a control instruction and passes through output unit
115, which are sent to closestool main controller 2, carries out auto-flushing.
Control instruction is sent to closestool master controller by FMCW microwave remote sensors 1 by the output unit 115 of microcontroller 11
2, after closestool master controller 2 receives above-mentioned control information, different action responses can be generated according to different control instructions,
Such as：Switch toilet lid 5, control flashing valve 6 carry out auto-flushing or control seat ring heating system 7 carries out preheating seat ring.From
And realize can with auto-open-close lid, wash by water and the pre-warmed intelligent closestool of seat ring.
A kind of detection method based on one MCW tellurometer survey induced intelligent closestools of above-described embodiment provided in this embodiment,
Measured using FMCW microwave remote sensors 1, FMCW microwave remote sensors 1 rely primarily on signal spectrum information judge testee away from
From so as to efficiently avoid because sensor outer housing, closestool body ceramics are accurate to ranging caused by the attenuation of microwave signal
The influence of degree, FMCW microwave remote sensors 1 also eliminate shadow of the people for microwave remote sensor Distance Judgment precision of different building shape
It rings, so switch cover or heating seat ring can be decided whether more accurately.Since FMCW microwave remote sensors 1 can detect people
The faint action such as small shaking, breathing and the heartbeat of body itself, so as to judge the end time of Male urine, Jin Erke
To realize the function of auto-flushing.FMCW tellurometer survey induced intelligent closestools can provide better user experience.
Use above specific case is illustrated the present invention, is merely used to help understand the present invention, not limiting
The system present invention.For those skilled in the art, thought according to the present invention can also be made several simple
It deduces, deform or replaces.
Claims (8)
1. a kind of FMCW tellurometer surveys induced intelligent closestool including toilet lid, renovates driving mechanism, flashing valve, seat ring heating system
System and closestool main controller, the driving mechanism of renovating are connect respectively with toilet lid and closestool main controller, and flashing valve is washed by water for electromagnetism
Valve is installed on jet water spout, which is characterized in that further includes FMCW microwave remote sensors, the FMCW microwave remote sensors include hair
Penetrate antenna, reception antenna, fmcw radar transceiver, FM circuit, traffic filter, signal amplifier and microcontroller；The hair
It penetrates antenna and reception antenna to be electrically connected with fmcw radar transceiver respectively as the sending and receiving end measured, the fmcw radar transmitting-receiving
The pass sequentially through traffic filter and the signal amplifier of device are electrically connected, and pass through FM circuit and monolithic with microcontroller
Machine is electrically connected；The microcontroller is electrically connected with closestool main controller.
2. FMCW tellurometer surveys induced intelligent closestool as described in claim 1, which is characterized in that described to renovate driving mechanism packet
Driving motor and overturning component are included, the overturning component is gear set, and the gear set is connect with toilet lid, for driving closestool
Lid overturning folding.
3. FMCW tellurometer surveys induced intelligent closestool as described in claim 1, which is characterized in that the flashing valve and closestool master
Control device is electrical connected, for carrying out auto-flushing.
4. FMCW tellurometer surveys induced intelligent closestool as described in claim 1, which is characterized in that the seat ring heating system peace
It is electrical connected inside seat ring, and with closestool main controller, is heated for counter race.
5. FMCW tellurometer surveys induced intelligent closestool as described in claim 1, which is characterized in that the FMCW microwave remote sensors
In closestool.
6. FMCW tellurometer surveys induced intelligent closestool as described in claim 1, which is characterized in that it is defeated that the microcontroller includes DA
Go out unit and be sequentially connected the AD conversion unit connect, digital filtering unit, digital signal processing unit and output unit, it is described
DA output units are electrically connected with FM circuit, and the AD conversion unit is connect with signal amplifier, the output unit and horse
Bucket main controller is electrically connected.
7. a kind of detection method based on claim 1-6 any one of them FMCW tellurometer survey induced intelligent closestools, special
Sign is, includes the following steps：
S001：Control FM circuit continuously generates modulated signal, and modulated signal control fmcw radar transceiver is sent out by microwave
Penetrate antenna linear frequency sweep electromagnetic wave of the transmitting with certain bandwidth outward；
S002：Intermediate-freuqncy signal after treatment is obtained, the intermediate-freuqncy signal is connect by fmcw radar transceiver by reception antenna
Wave is withdrawn to generate；
S003：Processing calculates the frequency spectrum and phase spectrum of intermediate-freuqncy signal, by frequency spectrum and phase spectrum judge personnel movement speed,
Moving direction and positional distance；
S004：According to the movement speed of judgement personnel, moving direction and positional distance control closestool is renovated, seat ring heats or punching
Water.
8. FMCW tellurometer surveys induced intelligent closestool as claimed in claim 7, which is characterized in that after obtaining intermediate-freuqncy signal, lead to
It crosses fft algorithm and obtains the frequency spectrum and phase spectrum of useful signal, each frequency point of the frequency spectrum calculated and phase spectrum corresponds to
The information of testee in different distance, the distance corresponding to the lower frequency point of frequency is nearer, and the frequency point institute that frequency is higher
Corresponding distance is more remote.
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| CN112462357A (en) * | 2020-12-17 | 2021-03-09 | 广东蓝水花智能电子有限公司 | Automatic door control method and automatic door control system based on FMCW principle |
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| WO2021073432A1 (en) * | 2019-10-16 | 2021-04-22 | 美的集团电子商务有限公司 | Toilet and control method thereof, and computer-readable storage medium |
| CN112709300A (en) * | 2020-12-23 | 2021-04-27 | 刘晓丰 | Intelligent closestool flushing system based on UWB positioning technology |
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| CN112505674A (en) * | 2020-12-17 | 2021-03-16 | 广东蓝水花智能电子有限公司 | Automatic door control method and system based on FMCW microwave inductor |
| CN112462357B (en) * | 2020-12-17 | 2024-04-30 | 广东蓝水花智能电子有限公司 | Automatic door control method and automatic door control system based on FMCW principle |
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| CN112796394A (en) * | 2020-12-30 | 2021-05-14 | 上海科勒电子科技有限公司 | Microwave inductor and intelligent closestool |
| CN112796394B (en) * | 2020-12-30 | 2022-08-16 | 上海科勒电子科技有限公司 | Microwave inductor and intelligent closestool |
| CN113653140A (en) * | 2021-08-13 | 2021-11-16 | 九牧厨卫股份有限公司 | Automatic flushing control method and system for closestool and closestool |
| CN114351807A (en) * | 2022-01-12 | 2022-04-15 | 广东蓝水花智能电子有限公司 | Intelligent closestool flushing method based on FMCW and intelligent closestool system |
| CN114360235A (en) * | 2022-01-12 | 2022-04-15 | 广东蓝水花智能电子有限公司 | Toilet seat control method and system based on FMCW microwave inductor |
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| CN114575427A (en) * | 2022-03-14 | 2022-06-03 | 泉州科牧智能厨卫有限公司 | Man urine flushing control method and device based on microwave induction |
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