CN105189878A - Apparatus and method for reducing cross-talk between capacitive sensors - Google Patents
Apparatus and method for reducing cross-talk between capacitive sensors Download PDFInfo
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- CN105189878A CN105189878A CN201480014110.1A CN201480014110A CN105189878A CN 105189878 A CN105189878 A CN 105189878A CN 201480014110 A CN201480014110 A CN 201480014110A CN 105189878 A CN105189878 A CN 105189878A
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- capacitance sensor
- controller
- ladle body
- toilet
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Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/96—Touch switches
- H03K17/962—Capacitive touch switches
- H03K17/9622—Capacitive touch switches using a plurality of detectors, e.g. keyboard
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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
- A47K5/00—Holders or dispensers for soap, toothpaste, or the like
- A47K5/06—Dispensers for soap
- A47K5/12—Dispensers for soap for liquid or pasty soap
- A47K5/1217—Electrical control means for the dispensing mechanism
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/02—Plumbing installations for fresh water
- E03C1/05—Arrangements of devices on wash-basins, baths, sinks, or the like for remote control of taps
- E03C1/055—Electrical control devices, e.g. with push buttons, control panels or the like
- E03C1/057—Electrical control devices, e.g. with push buttons, control panels or the like touchless, i.e. using sensors
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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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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
- H03K2217/96—Touch switches
- H03K2217/9607—Capacitive touch switches
- H03K2217/960705—Safety of capacitive touch and proximity switches, e.g. increasing reliability, fail-safe
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- Domestic Plumbing Installations (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Abstract
An apparatus and method is provided to reduce cross-talk between multiple capacitive sensors used in an electronic toilet and between multiple capacitive sensors used in an electronic faucet and an electronic soap dispenser. The present disclosure relates generally to an apparatus and method for reducing cross-talk between capacitive sensors. More particularly, the present disclosure relates to reducing cross-talk between capacitive sensors used in plumbing applications such as electronic faucets, electronic toilets and related electronic accessories such as electronic soap dispensers, for example.
Description
background technology and summary of the invention
The disclosure relates generally to the apparatus and method for reducing crosstalk between capacitance sensor.More specifically, the disclosure relates to the crosstalk reduced between the capacitance sensor that uses in pipe applications, such as such as electronic faucet, electronic toilet and associated electrical accessory such as electronic soap dispenser.
Electronic faucet is usually for controlling fluid stream.Electronic faucet can comprise proximity transducer such as active infrared (" IR ") proximity test device or electrical capacitance proximity sensor.This type of proximity transducer is used for the hand of the user of detection and location near this tap, and opens and closes water in response to the detection of the hand of this user.Other electronic faucets can use touch sensor to control tap.This type of touch sensor comprises capacitive touch screen or is positioned at the touch sensor of the other types on the spout of tap or on the handle controlling tap.Capacitance sensor on this tap also can be used for the degree of approach of the hand detecting the touch of faucet assembly and the user of contiguous tap.
Capacitance sensor is also used as to rinse actuation sensor, water tank filling sensor and ladle body overflow sensor in electronic toilet application.In addition, capacitance sensor is used in pipeline related accessory, such as such as liquid soap dispenser device.
In capacitance sensing application, other assemblies be positioned near electronic faucet can have undesired effects to the output signal from capacitance sensor.Such as, the user touching metal sink can bring out the capacitance signal of mistake at capacitance sensor place.The change occurred below sink deck also can cause false readings at capacitance sensor place.
In the application of other capacitance sensings, the multiple capacitance sensors being coupled to identical control can produce crosstalk and therefore also have undesired effects to the output signal from this capacitance sensor between this capacitance sensor.Such as, the large change of the capacitance of the first capacitance sensor can cause the capacitance variation of the second capacitance sensor enough large with trigger erroneous sensed event in the second capacitance sensor.Conventional sense application uses complicated software algorithm to attempt the impact of the crosstalk reduced between adjacent capacitance sensor.
In an illustrative embodiment of the present disclosure, sensing apparatus comprises the first capacitance sensor being coupled to the first assembly and the second capacitance sensor being coupled to the second assembly.The second sense wire that this second capacitance sensor comprises sensing electrode, is coupled to the first sense wire of this electrode and opens with this electrode gap.Sensing apparatus also comprises and is coupled to the first capacitance sensor and is coupled to the first sense wire of the second capacitance sensor and the controller of the second sense wire.This controller is through programming to determine the difference signal between the first output signal of receiving from the first sense wire of the second capacitance sensor and the second sense wire respectively with the second output signal, thus the crosstalk reduced from the first capacitance sensor is on the impact of the second capacitance sensor.This controller also through programming to analyze difference signal, thus detects the change of the second capacitance value caused by event.
In another illustrative embodiment of the present disclosure, electronic toilet comprises water-closet tank, and this water-closet tank is configured from water system reception water and remains on wherein by water; Be positioned at least one capacitance sensor of this water-closet tank; The toilet ladle body be communicated with this water-closet tank fluid; And ladle body overflow capacitance sensor, this ladle body overflow capacitance sensor is coupled to toilet ladle body in the position of the normal filling water level higher than toilet ladle body.The second sense wire that ladle body overflow capacitance sensor comprises sensing electrode, is coupled to the first sense wire of this electrode and opens with this electrode gap.Electronic toilet also comprises controller, and this controller is coupled at least one capacitance sensor in water-closet tank and is coupled to the first sense wire and second sense wire of ladle body overflow capacitance sensor.This controller is through programming to determine from the difference signal between first sense wire and the output signal of the second sense wire reception of ladle body overflow capacitance sensor, thus crosstalk reduction is on the impact of ladle body overflow capacitance sensor.This controller also through programming to analyze difference signal, thus determines when the normal filling water level of the water level in toilet ladle body higher than toilet ladle body.
In another illustrative embodiment of the present disclosure, electronic soap dispenser comprises dispensing head, and this dispensing head comprises outlet; Pump, this pump is operationally coupled to soap storage reservoir, the liquid soap from this soap storage reservoir to be pumped into the outlet of this dispensing head; And be operationally coupled to the capacitance sensor of this dispensing head.The second sense wire that this capacitance sensor comprises electrode, is coupled to the first sense wire of this electrode and opens with this electrode gap.Electronic soap dispenser also comprises and is coupled to the first sense wire of capacitance sensor and the controller of the second sense wire.This controller through programming receiving the first output signal and the second output signal respectively from the first sense wire and the second sense wire, determine difference signal according to the difference between the first output signal and the second output signal, analyze this difference signal to detect by the actuating of the capacitance sensor of user and the actuating in response to the capacitance sensor by user detected optionally activates this pump, distribute soap with the outlet from this dispensing head.
By considering the following detailed description to the exemplary embodiment that current recognized enforcement optimal mode of the present invention is illustrated, supplementary features of the present invention and advantage will become apparent to those skilled in the art.
Accompanying drawing explanation
Graphic detailed description refers in particular to accompanying drawing, wherein:
Fig. 1 is the block diagram of the electronic faucet of example embodiment;
Fig. 2 is the block diagram of the further details of the electronic faucet that example embodiment of the present disclosure is shown, this electronic faucet comprises at least one elementary capacitance sensor of being coupled to faucet assembly such as spout or handle and multiple secondary capacitance sensor to measure the unintended capacitances signal near this tap;
Fig. 3 illustrates from elementary capacitance sensor and the exemplary output signal of secondary capacitance sensor and the difference signal between this elementary electric capacity sensor output signal and this secondary capacitance sensor output signal; And
Fig. 4 is the block diagram of the details of the capacitance sensor of the electronic toilet illustrated in another example embodiment of the present disclosure.
Detailed description of the invention
For the object promoted the understanding of disclosure principle, with reference now to the embodiment shown in accompanying drawing, this embodiment describes hereinafter.Hereinafter the disclosed embodiments are not intended to be detailed, or are not intended the present invention to be limited to exact form disclosed in following detailed description.On the contrary, this embodiment is selected and is described, and makes others skilled in the art can utilize their instruction.Therefore, be not intended to limit the present invention's scope required for protection thus.The present invention includes and any change of illustrated device and described method is revised with further, and the technician in field involved in the present invention can expect the further application for principle of the present invention usually.
Fig. 1 is the block diagram of the exemplary embodiment that electronic faucet 10 of the present disclosure is shown.Tap 10 exemplarily comprises for carrying the spout 12 of fluid such as water and at least one manual valve handle 14 for controlling the fluid stream by spout 12 in a manual mode.Thermal water source 16 and cold water source 18 are coupled to manual valve body composite member 20 respectively by fluid supply tube line 17 and 19.Valve handle 14 is operationally coupled to manual valve body composite member 20 to control by current wherein.
In an example embodiment, independent manual valve handle 14 is provided for thermal water source 16 and cold water source 18.In other embodiments, such as Kitchen tap embodiment, single manual valve handle 14 is for the conveying of hot water and cold water.In this type of Kitchen tap embodiment, manual valve handle 14 and spout 12 are usually installed by single hole and are coupled to tank.Actuator driver's valve 22 is coupled in the output of valve body composite member 20, and this actuator driver's valve 22 is by the input signal Electronic Control received from controller 24.In exemplary embodiments, actuator driver's valve 22 is electric operating valve, such as electromagnetic valve.The output of actuator driver's valve 22 supplies fluid to spout 12 by supply line 23.
In alternative embodiment, thermal water source 16 and cold water source 18 are directly connected to actuator driver's valve 22, to provide the tap completely automatically without the need to any Non-follow control.But in another embodiment, controller 24 controls electronic proportioning valve (not shown), so that fluid is fed to spout 12 from thermal water source 16 and cold water source 18.
Because controller 24 controls actuator driver's valve 22 electricly, so can use the output of sensor such as capacitance sensor 26,28 to control current.As shown in Figure 1, when actuator driver's valve 22 is opened, tap 10 can operate in a usual manner, namely operates this tap by the manual valve member of operating grip 14 and valve body composite member 20 with MANUAL CONTROL mode.On the contrary, when the valve body composite member 20 of Non-follow control is configured to select water temperature and flow velocity, actuator driver's valve 22 can be touched control, or can be activated by proximity transducer when object (hand of such as user) is in detection zone, so that current are switched to opening and closing.
In an example embodiment, spout 12 has the capacitance sensor 26 being connected to controller 24.In addition, manual valve handle 14 also has capacitance sensor 28 mounted thereto, and this capacitance sensor 28 is electrically coupled to controller 24.From the output signal of capacitance sensor 26,28 for controlling actuator driver's valve 22, itself thus control from thermal water source 16 and cold water source 18 to the current of spout 12.By changing by capacitance sensor 26,28 sense capacitance value, controller 24 can make logic decision, to control the different operation modes of tap 10, such as at manual operation mode and exempt to change between manual operation mode, this is at U.S. Application Publication No 2010/0170570; With U.S. Patent number 7,690,395 and 7,150,293 and 7,997, further describe in 301, this application disclosure that is open and patent is all clearly incorporated to herein with way of reference.At U.S. Patent number 7,232, describe another example arrangement of the logic control being used for proximity test device and be used for tap in response to this proximity test device in 111 in more detail, it is incorporated in full by reference.
The amount of the fluid from thermal water source 16 and cold water source 18 is determined, the input of the rate of flow of fluid of all fluid temperature (F.T.)s as desired, expectation, the fluid volume of expectation, various task based access control, various generally acknowledged expression and/or their combination based on one or more user input.As mentioned above, tap 10 also can comprise Electronic Control proportioning valve or mixing valve, and this Electronic Control proportioning valve or mixing valve are communicated with both cold water sources 18 fluid with thermal water source 16.At U.S. Patent number 7,458,520 and PCT International Publication WO2007/082301 in describe the mixing valve that exemplary electronic controls, its disclosure is clearly incorporated to herein by reference.
The additional detail of the exemplary embodiment of electronic faucet shown in Figure 2.Fig. 2 illustrates the tap 10 comprising at least one elementary capacitance sensor 26,28, and this elementary capacitance sensor 26,28 is positioned on faucet assembly such as spout 12 as above or handle 14.Elementary capacitance sensor 26,28 detects the touch of faucet assembly or detects in the degree of approach being positioned at the surveyed area user near this faucet assembly.Elementary capacitance sensor 26 and 28 is exemplarily coupled to processor or controller 24, this processor or controller are used in response to detecting the touch of this tap 10 or detecting and depend on very near with tap 10 users' (such as hand, arm etc.) and activate valve 22, for as above leading 10 exempt from manual actuation.
In capacitance sensing in tap application, other assemblies be positioned near tap 10 can have undesired effects to the output signal from elementary capacitance sensor 26,28.Such as, the user touching metal sink 30 can bring out the capacitance signal of mistake at elementary capacitance sensor 26,28 place.The change occurred below sink deck 32 also can cause false readings at elementary capacitance sensor 26,28 place.Such as, the change below these sink deck can comprise water and to flow away along gutter 34 or someone moves object below sink deck 32.Waste disposal unit 36 or other electrostatic power sources also can have impact to the reading of elementary capacitance sensor 26,28.In addition, the 60Hz buzz being positioned at the AC power system below sink deck 32 also can affect the output signal of elementary capacitance sensor 26,28.
In order to tackle above-mentioned undesired effects, native system uses at least one secondary capacitance sensor 40 to detect unintended capacitances signal.Fig. 2 illustrates multiple secondary capacitance sensor 40A to 40G.Sensor 40A to 40G is for reducing the different capacitive effect in tap 10.Such as, secondary capacitance sensor 40A is exemplarily metal sheet or electrode, and this metal sheet or electrode are positioned near metal sink 30 or are coupled to metal sink 30 to reduce to touch the impact of metal sink 30.This type of touch of this tank 30 may be obscured exempting from manually or close activation for primary sensor 26,28 by controller 24.
Secondary capacitance sensor 40B is wound on around the sense wire 42 from elementary capacitance sensor 26,28 or is otherwise coupled to this sense wire 42, with when moving or touch the sense wire 42 below sink deck, reduces the possibility activating tap 10.Secondary capacitance sensor 40 can also be used as antenna, to reduce electromagnetic interference (EMT) or static discharge (ESD) erroneous activation.
In the exemplary embodiment, secondary transducers 40C is for sensing the water flowed away from gutter 34.When water is flowed from tank 30 by gutter 34, sensor 40C may be used for Detection capacitance change.Secondary capacitance sensor 40 can also be used on other gutters below tank, such as dishwasher drain pipe etc.Secondary capacitance sensor 40 can be used on any water storage device of being positioned at below sink deck 32 or below tank 30, and can be used in be connected to water or be positioned at below sink deck 32 any hardware or other equipment on.
Fig. 2 also illustrates the secondary capacitance sensor 40D being coupled to waste disposal unit 36.In addition, illustrate that sensor 40E, 40F and 40G are coupled to fluid supply tube line 23,17 and 19 respectively, to change from sense capacitance when wherein flowing when water.
As shown in Figure 3, from the output signal of elementary capacitance sensor 26,28, deduct the output signal from least one secondary capacitance sensor 40, thus controller 24 is measured more accurately from the touch of elementary capacitance sensor 26,28 or close to reading.As shown in Figure 3, signal A is the output signal from elementary capacitance sensor 26,28, and signal B is the output signal from secondary capacitance sensor 40.When deducting B from A, easilier to detect from the touch of elementary capacitance sensor 26,28 or close to event in the difference signal (A-B).Controller 24 processes this difference signal, to measure more accurately by the touch of elementary capacitance sensor 26,28 detection or close to event.In other words, when controller 24 determines whether to take action (such as, controlling actuator driver's valve 22), the input from secondary capacitance sensor 40 considered by controller 24.
Fig. 2 also illustrates the electronic soap dispenser 50 be positioned at electronic faucet 10 adjacent.Electronic soap dispenser 50 comprises dispensing head 51, and this dispensing head 51 has the soap outlet be positioned at above sink deck 32.Liquid soap storage reservoir 53 is exemplarily positioned at below sink deck 32.Pump 55 is operationally coupled to reservoir 53.Pump 55 is also positioned at below sink deck 32.In response to the signal carrying out self-controller 24, the liquid soap from reservoir 53 is pumped into the outlet of dispensing head 51 by pump 55.
Electronic soap dispenser 50 comprises the capacitance sensor 52 being coupled to dispensing head 51 or other correct positions.Capacitance sensor 52 provides output signal, and it is electrically coupled to controller 24.Capacitance sensor 52 exemplarily provides touch sensor and exempts from manual proximity transducer.Exempting from manual operation mode, capacitance sensor 52 and controller 24 detect hand or other objects of the user of the detection zone be positioned near dispensing head 51.The details of the exemplary electronic soap dispenser U.S. Shen of submitting on February 15th, 2013 number 61/765, open in 501, the disclosure of this application is incorporated herein by reference.
Controller 24 can also distinguish the touch input and grasping input that are detected by capacitance sensor 52.Exemplarily, based on amplitude or the intensity of the output signal from capacitance sensor 52, contact (touch or grasp) input can be different from close to input.Duration based on the contact output signal received from capacitance sensor 52 distinguishes contact input between touch and grasping.The length of the Duration Ratio " touch " of " grasping ".
Exemplarily, when the close output signal from capacitance sensor 52 being detected, controller 24 causes the pump 55 of electronic soap dispenser 50 to distribute soap with predetermined amount from reservoir 53.When the touch output signal from capacitance sensor 52 being detected, controller 24 causes pump 55 to distribute soap continuously.Exemplarily, if sensor failure or misuse, such as, the timer in controller 24 can limit the time for distributing soap.When the grasping of user being detected, controller 24 exemplarily causes this pump to keep inactive, would not distribute soap like this.So, when not distributing soap, user can grasp and the spout of rotating electron soap dispenser 50.
Due to the crosstalk from capacitance sensor 26 and 28, the capacitance sensor 26 and 28 respectively on spout 12 and handle 14 can cause the output signal generation inaccuracy of the capacitance sensor 52 from electronic soap dispenser 50.Particularly, the capacitance variation of in capacitance sensor 26 or 28 can cause the change of the capacitance detected by capacitance sensor 52.When common controller 24 shared by sensor 26,28 and 54, this type of crosstalk increases.Such as, this type of capacitance variation of the capacitance sensor 52 caused by capacitance sensor 26,28 can be interpreted as proximity test or to touch detecting by controller 24, even if the hand of user is not in detection zone or do not touch electronic soap dispenser 50.Therefore, this type of crosstalk between capacitance sensor 26,28 and 52 can cause the signal-obtaining of controller 24 to the capacitance sensor 52 from electronic soap dispenser 50 to be made mistakes.
In order to reduce the impact of this type of crosstalk, capacitance sensor 52 comprises sensing electrode 54, and this sensing electrode is coupled to controller 24 by the first sense wire 56.Second sense wire 58 with the basic equal length with the first sense wire 56 is positioned at capacitance sensor 52, the contiguous but not contact sensing electrode 54 of this capacitance sensor 52.By the first sense wire 56 and the second sense wire 58 sense from capacitance sensor 26 and 28 crosstalk or as above other interference.Difference measurement is performed, to determine the actual capacitance value because the hand of user is positioned at detection zone or touches capacitance sensor 52 and detected by the electrode 54 of capacitance sensor 52 between the capacitance that the capacitance that controller 24 detects on the first sense wire 56 and the second sense wire 58 detect.This is not when using complicated software algorithm to reduce cross talk effects, improves and uses capacitance sensor 52 proximity test and touch the accuracy detected.
Another embodiment of the present disclosure shown in Figure 4.In the fig. 4 embodiment, electronic toilet 59 comprises the water-closet tank 60 with the first capacitance sensor 62 and the second capacitance sensor 63.Capacitance sensor 62 and 63 is coupled to controller 24 respectively by sense wire 64 and 65.Exemplarily, capacitance sensor 62 is the water tank filling sensors being positioned at this water tank 60 inside.Controller 24 is coupled to valve assembly 66, and this valve assembly 66 controls the current from water system 67 to water tank 60.Along with water fills water-closet tank 60, the water from water system 67 changes the capacitance sensed by electric capacity filling sensor 62.Water tank filling sensor 62 detects that water tank 60 is filled completely again when the water level in water tank 60 rises to the level of water tank filling sensor 62.Controller 24, in response to the output signal detecting water-closet tank 60 middle water level based on capacitance sensor 62, controls filling-valve 66.So, water tank filling sensor 62, controller 24 operate that together with filling-valve 66 water tank 60 is filled into predetermined level.
Capacitance sensor 63 is exemplarily for being coupled to the flushing activated sensors of water tank 60.Controller 24 is coupled to flushing valve 69, and as mentioned below, this flushing valve 69 controls the flushing of this toilet in response to the output signal of the instruction user activated sensors 63 from capacitance sensor 63.
Toilet ladle body 68 is coupled to water-closet tank 60 in a usual manner.As shown in dotted line 70, toilet ladle body 68 has normally fills water level.3rd capacitance sensor 72 is coupled to this toilet ladle body in the position higher than normal interstitial wire 70.Along with water fills toilet ladle body 60, capacitance measured by capacitance sensor 72, to be raised to the flooded conditions higher than detecting toilet ladle body 68 during normal filling water level 70 on the water.The Application U.S. Serial No 61/610 that the details with the exemplary electronic toilet of electric capacity water tank filling sensor 62, electric capacity flushing sensor 63 and electric capacity ladle body overflow sensor 72 was submitted on March 13rd, 2012, the Application U.S. Serial No 61/722 that on November 2nd, 205 and 2012 submits to, open in 074, the disclosure of this application is clearly incorporated to herein with way of reference.
In use, electronic toilet 59 is operated by starting flush cycle.When user wishes flush toilet, user activates and rinses sensor 63.Such as, the hand of user can be placed on the indicator place be positioned at close to (before being such as placed on) on water tank 60 that electric capacity rinses near sensor 63, thus triggers flush cycle.Rinse sensor 63 receive user's input and output signal is sent to controller 24, this operation starting flushing valve 69 and filling-valve 66 is to rinse and to fill this toilet ladle body again.Before startup flush cycle, controller 24 receives the output signal from ladle body overflow capacitance sensor 72, to determine that whether water level in toilet ladle body 68 is lower than predetermined normal filling water level 70.If the water level in toilet ladle body 68 is at level 70 place or lower than level 70, then controller 24 starts flush cycle.On the contrary, if ladle body overflow capacitance sensor 72 signals to controller 24 notify that the water level in toilet ladle body 68 is in higher than level 70, then controller 24 will not start flush cycle.
The capacitance sensor 62 and 63 being positioned at water-closet tank 60 inside has usually the negligible impact from crosstalk.But as the arrow 71 in Fig. 4 diagrammatically illustrates, the overflow capacitance sensor 72 on toilet ladle body 68 is more subject to the impact of the crosstalk from the first capacitance sensor 62 and the second capacitance sensor 63.Such as, when water hand capacity water tank filling sensor 62 in water tank 60, there is the increase of large capacitance at electric capacity water tank filling sensor 62 place.This can cause less in the capacitance of ladle body overflow capacitance sensor 72 but still the increase that can detect.Therefore, when not having the crosstalk compensating self-capacitance water tank filling sensor 62, the increase of crosstalk capacitance value can cause ladle body overflow capacitance sensor 72 to detect overflow condition event mistakenly.
In order to compensate potential crosstalk 71, capacitance sensor 72 comprises the inner sense electrode 74 being coupled to controller by the first sense wire 76.Second sense wire 78 with the basic equal length with the first sense wire 76 is positioned at capacitance sensor 72 but is not coupled to sensing electrode 74.As mentioned above, cause the variable quantity of the capacitance of the first sense wire 76 identical with the capacitance variation amount of the second sense wire 78 from capacitance sensor 62 with the crosstalk of 63 or other large capacitance variation of originating.Controller 24, by obtaining the difference signal between the output signal from the electrode 74 on the first sense wire 76 and the output signal from the second sense wire 78, measures the actual capacitance value change of the capacitance sensor 72 caused by the SEA LEVEL VARIATION in toilet ladle body 68.Therefore, controller 24 by the difference between the capacitance that obtained sensing on sense wire 76 and 78 before the difference signal of process from capacitance sensor 72, make from the impact of the crosstalk of other capacitance sensors 62 and 63 or the impact of other interference sources invalid.Should be appreciated that, due to crosstalk or other interference, if necessary, water tank is filled capacitance sensor 62 and is rinsed and activates differential capacitance (differentialcapacitance) configuration that capacitance sensor 63 also can have ladle body overflow capacitance sensor 72.
In example embodiment of the present disclosure, battery is used for providing electric power for assembly as herein described.But the feature of system and method as herein described is not limited to battery power supply system.
Although the disclosure has been described to have exemplary design and embodiment, the present invention can revise further in spirit and scope of the present disclosure.Therefore, the application is intended to contain and uses of the present disclosure any change, the purposes of General Principle of the present disclosure or adjust.Further, the application is intended to be encompassed in the deviation of the present disclosure within the scope of the known or practice in field belonging to the disclosure.Therefore, although describe the present invention in detail with reference to the embodiment of certain illustrated, such as still there is change and amendment described in following claims and in the spirit and scope of the present invention limited.
Claims (20)
1. an electronic toilet, comprising:
Water-closet tank, described water-closet tank is configured to receive water from water system and remain on wherein by water;
At least one capacitance sensor, at least one capacitance sensor described is positioned at described water-closet tank;
Toilet ladle body, described toilet ladle body is communicated with described water-closet tank fluid;
Ladle body overflow capacitance sensor, described ladle body overflow capacitance sensor is coupled to described toilet ladle body in the position of the normal filling water level higher than described toilet ladle body, the second sense wire that described ladle body overflow capacitance sensor comprises sensing electrode, is coupled to the first sense wire of described electrode and opens with described electrode gap; And
Controller, described controller is coupled at least one capacitance sensor described in described water-closet tank and is coupled to described first sense wire and second sense wire of described ladle body overflow capacitance sensor, described controller is through programming to determine from the difference signal between described first sense wire and the output signal of the second sense wire reception of described ladle body overflow capacitance sensor, with the impact of crosstalk reduction on described ladle body overflow capacitance sensor, and described controller is also through programming to analyze described difference signal, thus determine when the described normal filling water level of the water level in described toilet ladle body higher than described toilet ladle body.
2. toilet according to claim 1, wherein, described controller through programming to detect that when described ladle body overflow capacitance sensor water level in described toilet ladle body is higher than described normal filling water level time, be cut to the described water system of described water-closet tank.
3. toilet according to claim 1, wherein, described electrode coupling is to described first sense wire of described ladle body overflow capacitance sensor, and the end of described second pickup wire is positioned at shell, and described shell is being coupled to described toilet ladle body higher than described normal filling water level place.
4. toilet according to claim 1, wherein, at least one capacitance sensor described being positioned at described water-closet tank is that capacitance sensor filled by water tank.
5. toilet according to claim 1, wherein, at least one capacitance sensor described being positioned at described water-closet tank rinses to activate capacitance sensor, described controller opens flushing valve through programming to activate described flushing activation capacitance sensor in response to user, thus rinses described toilet.
6. toilet according to claim 5, wherein, described controller keeps described flushing valve closed in response to user activates described flushing activation capacitance sensor and does not rinse described toilet to indicate the described water level in described flush toilet in the described difference signal from described ladle body overflow capacitance sensor higher than when described normal filling water level through programming.
7. toilet according to claim 1, wherein, water tank is filled capacitance sensor and is rinsed activation capacitance sensor and is arranged in described water-closet tank and is coupled to described controller.
8. an electronic soap dispenser, comprising:
Dispensing head, described dispensing head comprises outlet;
Pump, described pump is operationally coupled to soap storage reservoir, the liquid soap from described soap storage reservoir to be pumped into the described outlet of described dispensing head;
Capacitance sensor, described capacitance sensor is operationally coupled to described dispensing head, the second sense wire that described capacitance sensor comprises electrode, is coupled to the first sense wire of described electrode and opens with described electrode gap; And
Controller, described controller is coupled to described first sense wire and second sense wire of described capacitance sensor, described controller outputs signal to receive the first output signal and second from described first sense wire and the second sense wire respectively through programming, difference signal is determined according to the difference between described first output signal and the second output signal, analyze described difference signal to detect the actuating by the described capacitance sensor of user, and the actuating in response to the described capacitance sensor by described user detected optionally activates described pump distributes soap with the described outlet from described dispensing head.
9. electronic soap dispenser according to claim 8, wherein, described controller is through programming to analyze described difference signal, thus the hand distinguishing user is sensed, and the detection zone being in closely described dispensing head is interior contacts described capacitance sensor with the hand of user.
10. electronic soap dispenser according to claim 9, wherein, described controller is through programming with the amplitude based on described difference signal, and the hand distinguishing described user is positioned at described detection zone and contacts described capacitance sensor with the hand of described user.
11. electronic soap dispensers according to claim 9, wherein, described controller through programming with based on as by as described in the determined described user of difference signal hand with as described in duration of contacting of capacitance sensor, capacitance sensor described in the grasped that the hand of differentiation user touches described capacitance sensor and user.
12. electronic soap dispensers according to claim 11, wherein, described controller is through programming with when detecting that the hand of user activates described pump and carrys out dispense liquid soap when touching described capacitance sensor, and described controller is through programming to carry out dispense liquid soap when not activating described pump described in the grasped detecting user during capacitance sensor.
13. electronic soap dispensers according to claim 9, wherein, detect that the hand of described user is in close to the described detection zone of described capacitance sensor or detect that the hand of described user touches described capacitance sensor based on described controller, described pump operates with different allocation models.
14. electronic soap dispensers according to claim 13, wherein said allocation model comprises close to pattern and touch mode, and wherein described close to pattern in distribute predetermined liquid soap amount, and in described touch mode continuous dispensing liquid soap.
15. electronic soap dispensers according to claim 14, described controller makes described pump be deactivated wherein, in described touch mode after a predetermined amount of time.
16. electronic soap dispensers according to claim 8, wherein, described electrode comprises conductive sense plate.
17. electronic soap dispensers according to claim 8, wherein, described electrode comprises conduction spout main body.
18. 1 kinds of sensing apparatus, comprising:
Be coupled to the first capacitance sensor of the first assembly;
Be coupled to the second capacitance sensor of the second assembly, the second sense wire that described second capacitance sensor comprises sensing electrode, is coupled to the first sense wire of described electrode and opens with described electrode gap; And
Controller, described controller is coupled to described first capacitance sensor and is coupled to described first sense wire and second sense wire of described second capacitance sensor, described controller through programming to determine the difference signal between the first output signal of receiving from described first sense wire of described second capacitance sensor and the second sense wire respectively with the second output signal, to reduce from the crosstalk of described first capacitance sensor the impact of described second capacitance sensor, described controller is also through programming to analyze described difference signal, to detect the capacitance variations of described second capacitance sensor caused by event.
19. devices according to claim 18, wherein, described first capacitance sensor is positioned at water-closet tank, described second capacitance sensor is coupled to toilet ladle body in the position of the normal filling water level higher than described toilet ladle body, and described controller to analyze described difference signal, thus determines water level in described toilet ladle body when higher than the described normal filling water level of described toilet ladle body through programming.
20. devices according to claim 18, wherein, described first capacitance sensor is coupled to electronic faucet, described second capacitance sensor is operationally coupled to the dispensing head of electronic soap dispenser, and described controller is through programming to analyze described difference signal, thus detects the actuating by described second capacitance sensor of user.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/798,406 US9163972B2 (en) | 2011-06-16 | 2013-03-13 | Apparatus and method for reducing cross-talk between capacitive sensors |
| US13/798,406 | 2013-03-13 | ||
| PCT/US2014/018976 WO2014163930A1 (en) | 2013-03-13 | 2014-02-27 | Apparatus and method for reducing cross-talk between capacitive sensors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105189878A true CN105189878A (en) | 2015-12-23 |
| CN105189878B CN105189878B (en) | 2018-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480014110.1A Active CN105189878B (en) | 2013-03-13 | 2014-02-27 | Apparatus and method for reducing the crosstalk between capacitance sensor |
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| Country | Link |
|---|---|
| CN (1) | CN105189878B (en) |
| BR (1) | BR112015022533A2 (en) |
| CA (1) | CA2902465C (en) |
| WO (1) | WO2014163930A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107300934A (en) * | 2017-06-30 | 2017-10-27 | 佛山市云米电器科技有限公司 | A kind of water detection method detected based on capacitance in insulating pot kettle |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2912207C (en) | 2014-11-24 | 2020-02-25 | Delta Faucet Company | Toilet usage sensing system |
| US20160154507A1 (en) * | 2014-12-01 | 2016-06-02 | Cypress Semiconductor Corporation | Systems, methods, and devices for touch event and hover event detection |
| FR3076198B1 (en) * | 2018-01-02 | 2020-01-03 | Sebastien Fauconnier | DEVICE FOR THE EXPERIENTIAL DISTRIBUTION OF A COSMETIC PRODUCT |
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| US5940899A (en) * | 1997-12-31 | 1999-08-24 | Envision This, Inc. | System for preventing toilet overflows |
| EP1785532A1 (en) * | 2005-11-15 | 2007-05-16 | Geberit Technik Ag | Device for automatic flushing of a flushing device |
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| US20080109956A1 (en) * | 2006-10-24 | 2008-05-15 | Bradley Fixtures Corporation | Capacitive sensing for washroom fixture |
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| CN1155794C (en) * | 1999-12-02 | 2004-06-30 | 株式会社三丰 | Static capacity type deflexion detecting apparatus |
| US7549436B2 (en) * | 2001-07-27 | 2009-06-23 | Arichell Technologies | System and method for converting manually operated flush valves |
| US6877170B1 (en) * | 2003-07-21 | 2005-04-12 | Niccole Family Trust | Toilet control system |
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- 2014-02-27 CN CN201480014110.1A patent/CN105189878B/en active Active
- 2014-02-27 BR BR112015022533A patent/BR112015022533A2/en not_active IP Right Cessation
- 2014-02-27 WO PCT/US2014/018976 patent/WO2014163930A1/en active Application Filing
- 2014-02-27 CA CA2902465A patent/CA2902465C/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1302821A (en) * | 1970-06-08 | 1973-01-10 | ||
| US5940899A (en) * | 1997-12-31 | 1999-08-24 | Envision This, Inc. | System for preventing toilet overflows |
| EP1785532A1 (en) * | 2005-11-15 | 2007-05-16 | Geberit Technik Ag | Device for automatic flushing of a flushing device |
| CN2922285Y (en) * | 2006-06-08 | 2007-07-11 | 孙滕谌 | Planar condenser sensor |
| US20080109956A1 (en) * | 2006-10-24 | 2008-05-15 | Bradley Fixtures Corporation | Capacitive sensing for washroom fixture |
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| CN107300934A (en) * | 2017-06-30 | 2017-10-27 | 佛山市云米电器科技有限公司 | A kind of water detection method detected based on capacitance in insulating pot kettle |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014163930A1 (en) | 2014-10-09 |
| BR112015022533A2 (en) | 2017-12-19 |
| CA2902465C (en) | 2017-10-24 |
| CA2902465A1 (en) | 2014-10-09 |
| CN105189878B (en) | 2018-01-05 |
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