CN105189878B - Apparatus and method for reducing the crosstalk between capacitance sensor - Google Patents
Apparatus and method for reducing the crosstalk between capacitance sensor Download PDFInfo
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- CN105189878B CN105189878B CN201480014110.1A CN201480014110A CN105189878B CN 105189878 B CN105189878 B CN 105189878B CN 201480014110 A CN201480014110 A CN 201480014110A CN 105189878 B CN105189878 B CN 105189878B
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- capacitance sensor
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Classifications
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
Abstract
The present invention provides a kind of apparatus and method, the crosstalk being used in reduction between multiple capacitance sensors between multiple capacitance sensors in electronic toilet and in electronic faucet and electronic soap dispenser.The disclosure relates generally to the apparatus and method for reducing the crosstalk between capacitance sensor, more specifically, this disclosure relates to the crosstalk between the capacitance sensor used in pipe applications is reduced, such as such as electronic faucet, electronic toilet and associated electrical accessory such as electronic soap dispenser.
Description
Background technology and the content of the invention
The disclosure relates generally to the apparatus and method for reducing crosstalk between capacitance sensor.More specifically, the disclosure
The crosstalk being related between the capacitance sensor for reducing and being used in pipe applications, such as such as electronic faucet, electronic toilet and phase
Powered-down subassembly such as electronic soap dispenser.
Electronic faucet is frequently utilized for controlling fluid stream.Electronic faucet may include proximity transducer such as active infrared (" IR ")
Proximity detector or electrical capacitance proximity sensor.Such proximity transducer is used for the user's that detection is positioned near the tap
Hand, and open and close water in response to the detection of the hand of the user.Other electronic faucets can use touch sensor control
System tap.Such touch sensor includes capacitive touch screen or the handle on the spout of tap or for controlling tap
On other kinds of touch sensor.Capacitance sensor on the tap can also be used to detecting the touch of faucet assembly and neighbouring
The degree of approach of the hand of the user of tap.
Capacitance sensor is also used as flushing actuation sensor device, water tank filling sensor and ladle body in electronic toilet application and overflow
Flow sensor.In addition, capacitance sensor is with pipeline related accessory, such as such as liquid soap dispenser device.
In capacitance sensing application, the other assemblies near electronic faucet can be believed the output for carrying out self capacitance sensor
Number there are undesired effects.For example, the user for touching metal sink can induce the capacitance signal of mistake at capacitance sensor.Water
The change occurred below groove platform can also cause false readings at capacitance sensor.
In the application of other capacitance sensings, the multiple capacitance sensors for being coupled to identical control can be in the capacitance sensor
Between produce and crosstalk and therefore also have undesired effects to the output signal from the capacitance sensor.For example, the first electric capacity
The big change of the capacitance of sensor can cause the capacitance variation of the second capacitance sensor sufficiently large with the second capacitance sensing
Wrong sensed event is triggered in device.Conventional sense is using the software algorithm of complexity to attempt to reduce adjacent capacitance sensor
Between crosstalk influence.
In an embodiment illustrated of the disclosure, sensing device further includes being coupled to the first capacitance sensing of first assembly
Device and the second capacitance sensor for being coupled to the second component.Second capacitance sensor includes sensing electrode, is coupled to the electrode
The first sense wire and the second sense wire for being opened with the electrode gap.Sensing device further also include be coupled to the first capacitance sensor and
It is coupled to the first sense wire of the second capacitance sensor and the controller of the second sense wire.The controller is programmed to determine difference
Between the first output signal and the second output signal that are received from the first sense wire of the second capacitance sensor and the second sense wire
Difference signal, so as to reduce influence of the crosstalk from the first capacitance sensor to the second capacitance sensor.The controller is also
It is programmed to analyze difference signal, so as to detect the change of the second capacitance value as caused by event.
In another embodiment illustrated of the disclosure, electronic toilet includes cistern, and the cistern is configured
Water is received from water system and is held water within wherein；At least one capacitance sensor in the cistern；With this
The closestool ladle body that cistern is in fluid communication；And ladle body overflow capacitance sensor, the ladle body overflow capacitance sensor higher than
The opening position of the normal filling water level of closestool ladle body is coupled to closestool ladle body.Ladle body overflow capacitance sensor include sensing electrode,
The second sense wire for being coupled to the first sense wire of the electrode and being opened with the electrode gap.Electronic toilet also includes controller, should
Controller is coupled at least one capacitance sensor in cistern and is coupled to the first sense of ladle body overflow capacitance sensor
Survey line and the second sense wire.The controller is programmed to determine to feel from the first sense wire of ladle body overflow capacitance sensor and second
Difference signal between the output signal that survey line receives, so as to reduce influence of the crosstalk to ladle body overflow capacitance sensor.The control
Device processed is also programmed to analyze difference signal, thus determines when that the water level in closestool ladle body is higher than the normal filling of closestool ladle body
Water level.
In another embodiment illustrated of the disclosure, electronic soap dispenser includes dispensing head, and the dispensing head includes
Outlet；Pump, the pump are operatively coupled to soap storage reservoir, by the Liquid Fertilizer soap pump from the soap storage reservoir
It is sent to the outlet of the dispensing head；And it is operatively coupled to the capacitance sensor of the dispensing head.The capacitance sensor includes electricity
Pole, the first sense wire for being coupled to the electrode and the second sense wire opened with the electrode gap.Electronic soap dispenser also includes
It is coupled to the first sense wire of capacitance sensor and the controller of the second sense wire.The controller is programmed to respectively from the first sense
Survey line and the second sense wire receive the first output signal and the second output signal, according to the first output signal and the second output signal
Between difference determine difference signal, analyze the difference signal to detect by the actuating of the capacitance sensor of user and ring
The actuating of the capacitance sensor by user that Ying Yu is detected optionally activates the pump, with from the outlet of the dispensing head
Distribute soap.
The best mode embodiment of the present invention recognized at present is illustrated below by consideration exemplary
The detailed description of embodiment, supplementary features of the invention and advantage will become obvious to those skilled in the art.
Brief description of the drawings
The detailed description of schema 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 detail below of the electronic faucet for the example embodiment for showing the disclosure, the electronic faucet
Including at least one primary capacitance sensor for being coupled to faucet assembly such as spout or handle and multiple secondary capacitance sensors
To measure close to the leading unintended capacitances signal；
Fig. 3 shows exemplary output signal and the primary electric capacity from primary capacitance sensor and secondary capacitance sensor
Difference signal between sensor output signal and the secondary capacitance sensor output signal；And
Fig. 4 is the square frame of the details for the capacitance sensor for showing the electronic toilet in another example embodiment of the disclosure
Figure.
Embodiment
For the purpose for promoting the understanding to disclosure principle, with reference now to the embodiment shown in accompanying drawing, the embodiment
It is described below.Embodiment as disclosed hereinafter is not intended in detail, or is not intended to limit the invention to
Exact form disclosed in described in detail below.On the contrary, the embodiment is chosen and description so that the other technologies people of this area
Member can utilize their teaching.Therefore, it is not intended that thus limit scope of the present invention.The present invention is included to institute
Any change of the device of explanation and described method and further modification, and the technology people in field involved in the present invention
Member generally will recognize that further applying for principle of the invention.
Fig. 1 is the block diagram of an exemplary embodiment of the electronic faucet 10 for showing the disclosure.Tap 10 is exemplarily
At least one including the spout 12 for trandfer fluid such as water and for controlling the fluid stream by spout 12 in a manual mode
Individual manual valve handle 14.Thermal water source 16 and cold water source 18 are coupled to manual valve body by fluid supply tube line 17 and 19 respectively and combined
Part 20.Valve handle 14 is operatively coupled to manual valve body sub-assembly 20 and passes through current therein to control.
In an example embodiment, single manual valve handle 14 is provided for thermal water source 16 and cold water source 18.At it
In his embodiment, such as Kitchen tap embodiment, single manual valve handle 14 is used for the conveying of hot water and cold water.In such kitchen
In leading embodiment, manual valve handle 14 and spout 12 generally install coupling screw clamp by single hole.Valve body sub-assembly 20 it is defeated
Go out to be coupled to actuator driving valve 22, the actuator drives valve 22 by the input signal Electronic Control that is received from controller 24.
In exemplary embodiments, actuator driving valve 22 is electrically operated valve, such as magnetic valve.The output of actuator driving valve 22 passes through confession
Pipeline 23 is answered to supply fluid to spout 12.
In alternative embodiment, thermal water source 16 and cold water source 18 are directly connected to actuator driving valve 22, to provide
Without any completely automatic tap controlled manually.But in another embodiment, controller 24 controls electronic proportioning valve
(not shown), fluid is fed to spout 12 from thermal water source 16 and cold water source 18.
Because controller 24 controls actuator to drive valve 22 electricly, it is possible to uses and comes from sensor such as capacitance sensing
The output control current of device 26,28.As shown in figure 1, when actuator driving valve 22 is opened, tap 10 can be grasped in a usual manner
Make, i.e., the tap is operated with MANUAL CONTROL mode by operation handle 14 and the manual valve member of valve body sub-assembly 20.On the contrary,
When the valve body sub-assembly 20 controlled manually is set to select water temperature and flow velocity, actuator driving valve 22 can by touch control,
Or can be activated when object (hand of such as user) is in detection zone by proximity transducer, current are switched to and beat on and off
Close.
In an example embodiment, spout 12 has the capacitance sensor 26 for being connected to controller 24.In addition, hand-operated valve
Handle 14 also has capacitance sensor 28 mounted thereto, and the capacitance sensor 28 is electrically coupled to controller 24.Carry out self-capacitance
The output signal of sensor 26,28 is used to control actuator to drive valve 22, its so as to control from thermal water source 16 and cold water source 18 to
The current of spout 12.By using capacitance sensor 26,28 sense capacitance value changes, controller 24 can make logic decision, with
The different operation modes of control tap 10, such as in manual operation mode and exempt to change between manual operation mode, this is in the U.S.
Application publication number 2010/0170570；With in U.S. Patent number 7,690,395 and 7,150,293 and 7,997,301 further
Description, this application discloses clearly to be incorporated herein by reference with disclosure.In U.S. Patent number 7,232,111
In be more fully described for proximity detector and be used in response to the proximity detector tap logic control another example
Show configuration, its full text is incorporated to by reference.
The amount for determining the fluid from thermal water source 16 and cold water source 18 is inputted based on one or more users, such as it is expected
Fluid temperature (F.T.), desired rate of flow of fluid, desired fluid volume, the inputting of various task based access controls, various generally acknowledged expression and/
Or combinations thereof.As described above, tap 10 may also include Electronic Control proportioning valve or mixing valve, the Electronic Control proportioning valve or
Both mixing valve and thermal water source 16 and cold water source 18 are in fluid communication.In U.S. Patent number 7,458,520 and PCT International Publication number
The mixing valve of exemplary electronic control is described in WO2007/082301, the disclosure of which is clearly incorporated herein by quoting.
Figure 2 illustrates the additional detail of the exemplary embodiment of electronic faucet.Fig. 2 shows to include at least one primary electrical
Hold sensor 26,28 tap 10, the primary capacitance sensor 26,28 be located at faucet assembly spout 12 such as described above or
On handle 14.Primary capacitance sensor 26,28 detects the touch of faucet assembly or detected in the inspection near the faucet assembly
Survey the degree of approach of user in region.Primary capacitance sensor 26 and 28 is exemplarily coupled to processor or controller 24, should
Processor or controller be used for touch in response to detecting the tap 10 or the detection user in close proximity with tap 10 (such as
Hand, arm etc.) and activation valve 22, exempt from manual actuation for tap 10 as described above.
In the capacitance sensing during tap is applied, the other assemblies near tap 10 can be to from primary capacitance sensing
The output signal of device 26,28 has undesired effects.For example, the user for touching metal sink 30 can be in primary capacitance sensor
26th, the capacitance signal of mistake is induced at 28.The change occurred below sink deck 32 also can be in primary capacitance sensor 26,28
Place causes false readings.For example, the change below these sink decks can be flowed away including water along drainpipe 34 or someone moves
The object of the lower section of sink deck 32.Waste treatment equipment 36 or other electrostatic power sources also can be to the readings of primary capacitance sensor 26,28
Number has an impact.In addition, the 60Hz buzzs positioned at the AC power systems of the lower section of sink deck 32 can also influence primary capacitance sensing
The output signal of device 26,28.
In order to tackle above-mentioned undesired effects, the system is detected unexpected using at least one secondary capacitance sensor 40
Capacitance signal.Fig. 2 shows multiple secondary capacitance sensor 40A to 40G.Sensor 40A to 40G is used to reduce in tap 10 not
Same capacitive effect.For example, secondary capacitance sensor 40A is illustratively metallic plate or electrode, the metallic plate or electrode are positioned at gold
Near category tank 30 or it is coupled to metal sink 30 to reduce the influence of touch metal sink 30.Such touch of the tank 30 can
It can be obscured by controller 24 and exempt from manual or close activation for primary sensor 26,28.
Secondary capacitance sensor 40B is around the sense wire 42 from primary capacitance sensor 26,28 or with other
Mode is coupled to the sense wire 42, when mobile or when touching the sense wire 42 below sink deck, to reduce activation tap 10
Possibility.Secondary capacitance sensor 40 is also used as antenna, to reduce electromagnetic interference (EMT) or static discharge (ESD) mistake
Activation.
In the exemplary embodiment, secondary transducers 40C is used to sense the water to flow away from drainpipe 34.When water is logical from tank 30
When crossing the flowing of drainpipe 34, sensor 40C can be used for detecting capacitance variations.Secondary capacitance sensor 40 may be also used in tank
On other following drainpipes, such as dishwasher drain pipe etc..Secondary capacitance sensor 40, which can be used in, is located at sink deck
On any water storage device below 32 lower sections or tank 30, and it can be used in and be connected to water or below sink deck 32
On any hardware or other equipment.
Fig. 2 also illustrates the secondary capacitance sensor 40D for being coupled to waste treatment equipment 36.In addition, show sensor 40E,
40F and 40G is respectively coupled to fluid supply tube line 23,17 and sense capacitance change when 19, Yi Dangshui flow therefrom.
Passed as shown in figure 3, being subtracted from the output signal of primary capacitance sensor 26,28 from least one secondary capacitance
The output signal of sensor 40 so that controller 24 more accurately measure touch from primary capacitance sensor 26,28 or
Close to reading.As shown in figure 3, signal A is the output signal from primary capacitance sensor 26,28, and signal B is from secondary
The output signal of level capacitance sensor 40.When subtracting B from A, it is easier to which detection comes from primary electrical in difference signal (A-B)
Hold the touch of sensor 26,28 or close to event.Controller 24 handles the difference signal, more accurately to measure by primary electric capacity
Touch that sensor 26,28 detects or close to event.In other words, when controller 24 decides whether to take action (for example, control
Actuator drives valve 22) when, controller 24 considers the input from secondary capacitance sensor 40.
Fig. 2 is also illustrated positioned at the electronic soap dispenser 50 with the adjacent of electronic faucet 10.Electronic soap dispenser 50 wraps
Dispensing head 51 is included, the dispensing head 51 has positioned at the soap outlet of the top of sink deck 32.Liquid soap storage reservoir 53 is shown
It is located at the lower section of sink deck 32 to example property.Pump 55 is operatively coupled to reservoir 53.Pump 55 also is located at the lower section of sink deck 32.
In response to the signal from controller 24, the liquid soap from reservoir 53 is pumped into the outlet of dispensing head 51 by pump 55.
Electronic soap dispenser 50 includes being coupled to dispensing head 51 or the capacitance sensor 52 of other correct positions.Electric capacity passes
Sensor 52 provides output signal, and it is electrically coupled to controller 24.Capacitance sensor 52 exemplarily provides touch sensor and exempted from
Both manual proximity transducers.In manual operation mode is exempted from, capacitance sensor 52 and the detection of controller 24 are located at dispensing head 51
The hand of user in neighbouring detection zone or other objects.The details of exemplary electronic soap dispenser was at 2 months 2013 15
The U.S. Shen number 61/765 that day submits, disclosed in 501, the disclosure of which is herein incorporated by reference.
Controller 24 can also distinguish between the touch input detected by capacitance sensor 52 and grasp and inputs.Exemplarily,
Amplitude or intensity based on the output signal for carrying out self capacitance sensor 52, it is defeated contact (touch or grasp) can be different from close to input
Enter.It is defeated that duration based on the contact output signal received from capacitance sensor 52 distinguishes contact between touch and grasping
Enter.The length of the Duration Ratio " touch " of " grasping ".
Exemplarily, when detect come self capacitance sensor 52 close to output signal when, controller 24 causes electronics fertile
The pump 55 of soap distributor 50 distributes soap from reservoir 53 with predetermined amount.When detecting the touch that carrys out self capacitance sensor 52
During output signal, controller 24 causes pump 55 continuously to distribute soap.Exemplarily, if sensor failure or misuse,
For example, the timer in controller 24 can limit the time for distributing soap.When detecting the grasping of user, controller
24 exemplarily cause the pump to keep inactive, will not thus distribute soap.In this way, in the case where not distributing soap, make
User can grasp and the spout of rotating electron soap dispenser 50.
Due to carrying out the crosstalk of self capacitance sensor 26 and 28, the He of capacitance sensor 26 on spout 12 and handle 14 respectively
28 can cause the output signal of the capacitance sensor 52 from electronic soap dispenser 50 that inaccuracy occurs.Specifically, electric capacity
The capacitance variation of one in sensor 26 or 28 can cause the change of the capacitance detected by capacitance sensor 52.When
When sensor 26,28 and 54 shares common controller 24, such crosstalk increase.For example, the meeting of controller 24 will be by capacitance sensing
Such capacitance variation of capacitance sensor 52 is construed to proximity test or touch detection caused by device 26,28, even if user
Hand not in detection zone or without touch electronic soap dispenser 50.Therefore, it is such between capacitance sensor 26,28 and 52
Crosstalk can cause controller 24 to malfunction the signal-obtaining of the capacitance sensor 52 from electronic soap dispenser 50.
In order to reduce the influence of such crosstalk, capacitance sensor 52 includes sensing electrode 54, and the sensing electrode passes through first
Sense wire 56 is coupled to controller 24.It is located at electric capacity with the second sense wire 58 with 56 essentially identical length of the first sense wire to pass
In sensor 52, the capacitance sensor 52 is neighbouring but does not contact sensing electrode 54.Pass through the first sense wire 56 and the second sense wire 58
Sensing comes the crosstalk of self capacitance sensor 26 and 28 or other interference as described above.Controller 24 is examined on the first sense wire 56
Difference measurement is performed between the capacitance measured and the capacitance detected on the second sense wire 58, to determine due to user's
Hand is located at the actual capacitance value in detection zone or touching capacitance sensor 52 and being detected by the electrode 54 of capacitance sensor 52.This
Without using complexity software algorithm to reduce cross talk effects in the case of, raising use the proximity test of capacitance sensor 52 and touch
The accuracy of detection.
Figure 4 illustrates another embodiment of the disclosure.In the fig. 4 embodiment, electronic toilet 59 includes having the
The cistern 60 of one capacitance sensor 62 and the second capacitance sensor 63.Capacitance sensor 62 and 63 passes through sense wire 64 respectively
It is coupled to controller 24 with 65.Exemplarily, capacitance sensor 62 is the water tank filling sensor inside the water tank 60.Control
Device 24 processed is coupled to valve assembly 66, and the valve assembly 66 controls the current from water system 67 to water tank 60.Filled with dampening
Cistern 60, the water from water system 67 change the capacitance sensed by electric capacity filling sensor 62.Water tank is filled
Sensor 62 detected when the water level in water tank 60 rises to the level of water tank filling sensor 62, the quilt completely of water tank 60
Refill.Controller 24 is filled out in response to the output signal based on water level in the detection cistern 60 of capacitance sensor 62 to control
Fill valve 66.In this way, water tank filling sensor 62, controller 24 and filling-valve 66 operate together it is predetermined so that water tank 60 to be filled into
It is horizontal.
Capacitance sensor 63 is illustratively the flushing activation sensor for being coupled to water tank 60.Controller 24 is coupled to flushing
Valve 69, as described below, the flushing valve 69 activate the defeated of sensor 63 in response to carrying out the instruction user of self capacitance sensor 63
Go out the flushing that signal controls the closestool.
Closestool ladle body 68 is coupled to cistern 60 in a usual manner.As shown in dotted line 70, closestool ladle body 68 has normal
Fill water level.3rd capacitance sensor 72 is coupled to the closestool ladle body in the opening position higher than normal filling line 70.Filled out with dampening
Closestool ladle body 60 is filled, capacitance sensor 72 measures capacitance, and closestool is detected during normal filling water level 70 to rise above on the water
The flooded conditions of ladle body 68.Sensor 63 and electric capacity ladle body overflow sensing are rinsed with electric capacity water tank filling sensor 62, electric capacity
The Application U.S. Serial No 61/610,205 and 2012 that the details of the exemplary electronic closestool of device 72 was submitted on March 13rd, 2012
The Application U.S. Serial No 61/722 that on November 2, in submits, disclosed in 074, the disclosure of which is clear and definite by reference
It is incorporated herein.
In use, electronic toilet 59 is operated by starting flush cycle.When user wishes to rinse closestool, make
User, which activates, rinses sensor 63.For example, the hand of user, which can be positioned towards (such as before being placed on), is located at electric capacity punching
Wash at the indicator on the water tank 60 near sensor 63, so as to trigger flush cycle.It is defeated to rinse the reception user of sensor 63
Enter and output signal is sent to controller 24, this starts flushing valve 69 and the operation of filling-valve 66 to rinse and refill this
Closestool ladle body.Before flush cycle is started, controller 24 receives the output signal from ladle body overflow capacitance sensor 72, with true
Determine whether the water level in closestool ladle body 68 is less than predetermined normal filling water level 70.If the water level in closestool ladle body 68 is in level
At 70 or less than level 70, then controller 24 starts flush cycle.On the contrary, if ladle body overflow capacitance sensor 72 is to control
Device 24 signals is higher than level 70 to notify the water level in closestool ladle body 68 to be in, then controller 24 will not start flush cycle.
Capacitance sensor 62 and 63 inside cistern 60 has generally negligible from crosstalk
Influence.However, the arrow 71 in such as Fig. 4 is shown diagramatically, the overflow capacitance sensor 72 on closestool ladle body 68 is more susceptible to come from
The influence of the crosstalk of first capacitance sensor 62 and the second capacitance sensor 63.For example, when the water hand capacity water in water tank 60
During case filling sensor 62, occurs the increase of big capacitance at electric capacity water tank filling sensor 62.This can cause ladle body to overflow
Flow the less but still detectable increase in the capacitance of capacitance sensor 72.Therefore, self-capacitance water is carried out in no compensation
In the case of the crosstalk of case filling sensor 62, the increase of crosstalk capacitance value can cause ladle body overflow capacitance sensor 72 mistakenly to examine
Survey overflow condition event.
In order to compensate potential crosstalk 71, capacitance sensor 72 includes being coupled to the interior of controller by the first sense wire 76
Portion's sensing electrode 74.Be located at the second sense wire 78 with 76 essentially identical length of the first sense wire in capacitance sensor 72 but
It is not coupled to sensing electrode 74.As described above, come self capacitance sensor 62 and 63 or the big capacitance variation in other sources
Crosstalk causes the variable quantity of the capacitance of the first sense wire 76 identical with the capacitance variation amount of the second sense wire 78.Controller 24
By obtaining the output signal of electrode 74 on the first sense wire 76 and between the output signal from the second sense wire 78
Difference signal, come measure as the capacitance sensor 72 caused by the SEA LEVEL VARIATION in closestool ladle body 68 actual capacitance value change
Change.Therefore, controller 24 before processing is come the difference signal of self capacitance sensor 72 by obtaining on sense wire 76 and 78
Difference between the capacitance of sensing, make the influence of crosstalk from other capacitance sensors 62 and 63 or the shadow of other interference sources
Sound is invalid.It should be understood that due to crosstalk or other interference, if necessary, water tank filling capacitance sensor 62 and flushing swash
Capacitance sensor 63 living can also have the differential capacitance (differential of ladle body overflow capacitance sensor 72
Capacitance) configure.
In the example embodiment of the disclosure, battery is used to provide electric power for component as described herein.It is however, described herein
The features of system and method be not limited to battery power supply system.
Although the disclosure has been described as having exemplary design and embodiment, the present invention can be in the spirit of the disclosure
With further changed in scope.Therefore, the application be intended to using the disclosure General Principle the disclosure any change,
Purposes or adjustment.Further, the application is intended to the sheet known in disclosure art or in the range of practice
Disclosed deviation.Therefore, although the present invention is described in detail by reference to the embodiment of certain illustrated, such as enclosing, right will
Ask described in book and still suffered from the spirit and scope of the present invention limited and changed and modifications.
Claims (13)
1. a kind of electronic soap dispenser, including：
Dispensing head, the dispensing head include outlet；
Pump, the pump are operatively coupled to soap storage reservoir, by the Liquid Fertilizer from the soap storage reservoir
Soap pump is sent to the outlet of the dispensing head；
Capacitance sensor, the capacitance sensor are operatively coupled to the dispensing head, the capacitance sensor include electrode,
The second sense wire for being coupled to the first sense wire of the electrode and being opened with the electrode gap；And
Controller, the controller are coupled to first sense wire and the second sense wire of the capacitance sensor, the control
Device processed is programmed to receive the first output signal and the second output signal, root from first sense wire and the second sense wire respectively
Determine that difference signal, the analysis difference signal are logical to detect according to the difference between first output signal and the second output signal
Cross the actuating of the capacitance sensor of user and the capacitance sensing by the user in response to detecting
Device is activated optionally to activate the pump to distribute soap from the outlet of the dispensing head.
2. electronic soap dispenser according to claim 1, wherein, the controller is programmed to analyze the difference letter
Number, it is sensed in the detection zone in the very close dispensing head so as to distinguishing the hand of user and is contacted with the hand of user
The capacitance sensor.
3. electronic soap dispenser according to claim 2, wherein, the controller is programmed to believe based on the difference
Number amplitude, the hand for distinguishing the user is located in the detection zone and the hand of the user contacts the capacitance sensing
Device.
4. electronic soap dispenser according to claim 2, wherein, the controller is programmed to be based on such as by the difference
The duration that the hand of the user determined by xor signal contacts with the capacitance sensor, the hand for distinguishing user touch
The capacitance sensor and the hand of user grasp the capacitance sensor.
5. electronic soap dispenser according to claim 4, wherein, the controller, which is programmed to work as, detects user
Hand activate the pump to distribute liquid soap when touching the capacitance sensor, and the controller is programmed to when detection
The pump is not activated to distribute liquid soap during the hand grasping capacitance sensor for going out user.
6. electronic soap dispenser according to claim 2, wherein, it is to detect the user based on the controller
Hand still detect that the hand of the user touches the electric capacity and passed in the detection zone close to the capacitance sensor
Sensor, the pump are operated with different allocation models.
7. electronic soap dispenser according to claim 6, wherein the allocation model includes close to pattern and touches mould
Formula, and predetermined liquid soap amount, and the continuous dispensing in the touch mode are wherein distributed close in pattern described
Liquid soap.
8. electronic soap dispenser according to claim 7, wherein, in the touch mode predetermined time quantum it
Afterwards, the controller deactivates the pump.
9. electronic soap dispenser according to claim 1, wherein, the electrode includes conductive sense plate.
10. electronic soap dispenser according to claim 1, wherein, the electrode includes conductive spout main body.
11. a kind of sensing device further, including：
It is coupled to the first capacitance sensor of first assembly；
Be coupled to the second capacitance sensor of the second component, second capacitance sensor include sensing electrode, be coupled to it is described
First sense wire of electrode and the second sense wire opened with the electrode gap；And
Controller, the controller are coupled to first capacitance sensor and are coupled to the described of second capacitance sensor
First sense wire and the second sense wire, the controller are programmed to determine respectively from described the of second capacitance sensor
Difference signal between the first output signal and the second output signal that one sense wire and the second sense wire receive, is come from reducing
Influence of the crosstalk of first capacitance sensor to second capacitance sensor, the controller are also programmed to analyze institute
Difference signal is stated, to detect the capacitance variations of second capacitance sensor as caused by event.
12. device according to claim 11, wherein, first capacitance sensor is located in cistern, and described
Two capacitance sensors are coupled to closestool ladle body, and the control in the opening position of the normal filling water level higher than the closestool ladle body
Device processed is programmed to analyze the difference signal, so that it is determined that when the water level in the closestool ladle body is higher than the closestool ladle body
The normal filling water level.
13. device according to claim 11, wherein, first capacitance sensor is coupled to electronic faucet, and described
Two capacitance sensors are operatively coupled to the dispensing head of electronic soap dispenser, and the controller is programmed to analyze institute
Difference signal is stated, so as to detect the actuating of second capacitance sensor by user.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/798,406 | 2013-03-13 | ||
| US13/798,406 US9163972B2 (en) | 2011-06-16 | 2013-03-13 | Apparatus and method for reducing cross-talk between capacitive sensors |
| 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 CN105189878A (en) | 2015-12-23 |
| CN105189878B true CN105189878B (en) | 2018-01-05 |
Family
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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 |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN105189878B (en) |
| BR (1) | BR112015022533A2 (en) |
| CA (1) | CA2902465C (en) |
| WO (1) | WO2014163930A1 (en) |
Families Citing this family (4)
| 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 |
| 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 |
| FR3076198B1 (en) * | 2018-01-02 | 2020-01-03 | Sebastien Fauconnier | DEVICE FOR THE EXPERIENTIAL DISTRIBUTION OF A COSMETIC PRODUCT |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3639920A (en) * | 1970-06-08 | 1972-02-08 | American Standard Inc | Programmed plumbing service |
| US5940899A (en) * | 1997-12-31 | 1999-08-24 | Envision This, Inc. | System for preventing toilet overflows |
| 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 |
| ATE421004T1 (en) * | 2005-11-15 | 2009-01-15 | Geberit Technik Ag | DEVICE FOR AUTOMATICALLY RINSING A FLUSHING DEVICE |
| CN2922285Y (en) * | 2006-06-08 | 2007-07-11 | 孙滕谌 | Planar condenser sensor |
| GB2456937B (en) * | 2006-10-24 | 2011-07-13 | Bradley Fixtures Corp | Capacitive sensing for washroom fixture |
-
2014
- 2014-02-27 CN CN201480014110.1A patent/CN105189878B/en active Active
- 2014-02-27 CA CA2902465A patent/CA2902465C/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
Also Published As
| Publication number | Publication date |
|---|---|
| CN105189878A (en) | 2015-12-23 |
| BR112015022533A2 (en) | 2017-12-19 |
| CA2902465A1 (en) | 2014-10-09 |
| CA2902465C (en) | 2017-10-24 |
| WO2014163930A1 (en) | 2014-10-09 |
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