WO2009095879A2 - Robinet automatique et douche - Google Patents

Robinet automatique et douche Download PDF

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Publication number
WO2009095879A2
WO2009095879A2 PCT/IB2009/050369 IB2009050369W WO2009095879A2 WO 2009095879 A2 WO2009095879 A2 WO 2009095879A2 IB 2009050369 W IB2009050369 W IB 2009050369W WO 2009095879 A2 WO2009095879 A2 WO 2009095879A2
Authority
WO
WIPO (PCT)
Prior art keywords
valve
sensors
faucet
sensor
automatic faucet
Prior art date
Application number
PCT/IB2009/050369
Other languages
English (en)
Other versions
WO2009095879A3 (fr
Inventor
Moshe Katz
Arieh Litbak
Yaniv Petel
Shay Popper
Original Assignee
Kibuts Glil Yam
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kibuts Glil Yam filed Critical Kibuts Glil Yam
Publication of WO2009095879A2 publication Critical patent/WO2009095879A2/fr
Publication of WO2009095879A3 publication Critical patent/WO2009095879A3/fr

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Classifications

    • 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

Definitions

  • the present invention relates to an automatic faucet or shower device and method with improved activation reliability.
  • WOD(TM) and Water On Demand(TM) are claimed as trademarks by the present applicants.
  • An automatically operated faucet may save water, by automatically closing a faucet which was left open by a user. There is a hygienic benefit in users being spared the need to touch the faucet. Various other benefits may also be achieved.
  • Prior art faucets may use a capacitive sensor or an infrared sensor (IR), using active or passive IR.
  • the active IR may use an illuminated cone; there may be reflections used to detect a user hand's presence.
  • the automatic system may have a reliability problem.
  • a new faucet or shower uses a dual sensor technology to reduce the false alarm rate and increase reliability of true activation - probability of true recognition of activation.
  • the IR sensor or transmitter/receiver (T/R) sensor pair is located under the faucet outlet, to form a cone of detection.
  • the IR sensor is located in the center of the faucet. In another preferred embodiment, a sensors array is located around the openings for water.
  • the new technology may be used, for example, in regular, pull-out or pulldown faucets. Various applications of the technology are optional.
  • the faucet further includes a manual override mechanism, to activate or stop the water flow, in case the automatic detection means are in error.
  • the manual mechanism may further be used to adjust the water temperature to a desired value, and/or for manual operation when desired, irrespective of the sensor's activation.
  • This feature may be especially important in domestic use, where a user will not tolerate in his/her home a faucet not operating, or supplying water uncontrollably.
  • the faucet controller will use different criteria or thresholds for ON (opening the water) and for OFF (closing it), since the flowing water may change the environment for the sensors. Other factors may also affect the readings of sensors during the ON and/or OFF transitions.
  • the system may use an adaptive system and method, capable of learning a user's habits.
  • the novel technology may be used to activate the water in a toilet as well as other applications.
  • the learning capability will also include the manual override activations, which may be used to correct the presently used parameters.
  • Fig. 1 illustrates a faucet with dual sensor means including capacitive and IR cone sensors
  • Fig. 2 illustrates a faucet with dual sensor means including capacitive and IR hollow cone sensors
  • Fig. 3 details a pull-out faucet with a central IR sensor
  • Fig. 4 details a pull-out faucet with a peripheral IR sensors array
  • Fig. 5 details a regular faucet with a peripheral IR sensors array
  • Fig. 6 details a block diagram of a dual sensor automatic faucet
  • Fig. 7 details a block diagram of a dual sensor automatic faucet with manual override
  • Fig. 8 details a block diagram of another embodiment of a dual sensor automatic faucet with manual override
  • Fig. 9 details a flow chart of a dual sensor automatic faucet with separate ON/OFF criteria
  • Fig. 10 details a flow chart of an adaptive automatic faucet with manual override
  • Fig. 11 details a data flow diagram of an adaptive automatic faucet with manual override
  • Fig. 12 details a shower device with dual sensor means including capacitive and IR cone sensors
  • Fig. 13 illustrates a shower device with dual sensor means including capacitive and IR hollow cone sensors
  • Fig. 14 illustrates a shower system with multiple sensor means including capacitive and IR cone sensors
  • Fig. 15 details a flow chart of a dual/multiple sensor automatic faucet with separate ON/OFF criteria and manual override Modes for Carrying out the Invention
  • Fig. 1 which illustrates a faucet 1 with dual sensor means including capacitive and IR cone sensors
  • an IR sensor cone 21 is formed under the faucet 1.
  • a capacitive sensor field 31 is formed around the faucet 1.
  • the capacitive sensor may use any of the presently commercially available such sensors.
  • the readings from both sensors are correlated to enhance the reliability of the automatic activation of the faucet.
  • the IR sensor beam in this embodiment may be easier to implement, such as illustrated in Fig. 3. It may be effective in detecting a request to activate the faucet (turn water ON). However, flowing water may interfere with its operation, and the turn off may also relay on a time delay means.
  • Fig. 2 illustrates a faucet 1 with dual sensor means including a capacitive sensor field 31 around the faucet 1 and an IR sensor hollow cone 22 under the faucet 1.
  • the IR sensor beam in this embodiment may be somewhat more difficult to implement, such as illustrated in Figs. 4 and 5. It may be more effective in detecting a request to activate the faucet (turn water ON or OFF). Flowing water may interfere to a lesser extent with its operation.
  • Fig. 3 details a pull-out faucet 1 with a central IR sensor 23.
  • the faucet 1 may have water outlet holes 12 around the sensor 23, as illustrated.
  • Fig. 4 details a pull-out faucet 1 with a peripheral IR sensors array 24, surrounding the water outlet opening 13 in the faucet 1.
  • Fig. 5 details a regular faucet 1 with a peripheral IR sensors array.
  • the IR sensors array may be implemented with an IR sensor array ring 25 as illustrated.
  • the ring 25 may be mounted around the faucet 1 with the outlet opening 13 therein.
  • Fig. 6 details a block diagram of a dual sensor automatic faucet.
  • the system includes an IR sensor 23 and a capacitive sensor 33 for detecting a user nearby requesting to open the faucet (turn water ON) or closing it.
  • the controller 41 processes the sensors signals to decide whether to open the faucet or close it. If an activation decision is reached, the controller 41 will activate electro-mechanical means 42 to implement the decision.
  • the electro-mechanical means 42 may include an electrical motor or a solenoid (not shown), for example. Either a DC motor, an AC motor or a stepper motor may be used.
  • the electro-mechanical means 42 will open or close a valve 43 in the faucet 1, to open or close the faucet for water flow.
  • the valve 43 may either have two positions ON/OFF, or allow for a variable degree of opening, for a desired flow rate.
  • the controller 41 may store a programmable parameter indicating the desired flow rate.
  • the user may change the flow rate using programming means as known in the art, for example using an IR communication channel with non- volatile memory means in the controller 41.
  • separate sensor means may be used to turn the water ON or OFF, and for controlling the flow rate.
  • Fig. 7 details a block diagram of a dual sensor automatic faucet with manual override means.
  • the system is similar to that disclosed in Fig. 6 and the related description, with the addition of a manual override input means 441.
  • the manual override input means 441 may include (not shown) a pair of electrical pushbuttons ON and OFF, connected to the controller 41. Pushing one of the buttons will indicate a corresponding override command, and the controller 41 will act accordingly to cancel the previous automatic activation. That is, the valve 43 will be turned ON or OFF responsive to the manual pushbutton being pressed. Other embodiments of a manual override may be used.
  • the manual override feature may be used to cancel an automatic opening or closing of the water at the faucet, in any given situation.
  • the advantage of this embodiment is its simple and low cost implementation.
  • a possible disadvantage is that, in case of a failure of the controller 41 or the power supply 49, the manual override will not have effect.
  • a possible solution is to use manual override means, such as a manual valve, to close the water if necessary and/or for automatic adjustments.
  • a manual valve may be installed before the mixer.
  • Fig. 8 details a block diagram of another embodiment of a dual sensor automatic faucet 1 with manual override means.
  • Data from the IR sensor 23 and the capacitive sensor 33 are transferred to the controller 41. According to activation decisions, the controller 41 will activate electro-mechanical means 42 such as an electrical motor.
  • the system includes a dual activation valve 44, which may be opened or closed by the electro-mechanical means 42 or by the manual override input 442. In this case, the manual override input 442 will act directly on the valve 44 to open or close it.
  • the advantage of this embodiment is its enhanced reliability - it will operate as required, even in case of a failure of the controller 41 or the power supply 49.
  • a possible disadvantage is the more complex structure of the dual valve 44.
  • the system will also include a manual override indication 443 connected from the valve 44 to the controller 41, so the controller 41 will be notified of a manual override.
  • a manual override indication 443 connected from the valve 44 to the controller 41, so the controller 41 will be notified of a manual override.
  • This information may be advantageously used to update the decision parameters and the activation history, as detailed elsewhere in the present disclosure.
  • the signal 443 may be generated for example with a microswitch installed in the valve 44, which is activated by the manual override input 442.
  • Fig. 9 details a flow chart of a dual sensor automatic faucet with separate ON/OFF criteria, and as detailed below.
  • the method includes:
  • the signals from the two sensors are being read continuously.
  • the sensors readings will be evaluated according to a predefined algorithm, and using a first criterion A with related parameters.
  • open valve 54 commands to the electro-mechanical device 42 are issued, to open the water flow.
  • the signals from the two sensors are being read continuously.
  • close valve 58 commands to the electro-mechanical device 42 are issued, to close the water flow; goto 51.
  • the optional Timeout feature measures the time since the last activation of water flow (entering ON state) and will close the water after a predetermined time delay. For example, the user may set this parameter for 2 minutes or 5 minutes. The benefit of this feature is to save water - a failure to turn the faucet OFF will not cause water to flow indefinitely. ** End of method **
  • Fig. 10 details a flow chart of an adaptive automatic faucet with manual override, and as detailed below.
  • the method includes:
  • the signals from the two sensors are being read continuously.
  • the sensors readings will be evaluated according to a predefined algorithm, and using separate criteria A or B with different, related parameters.
  • manual override 65 if Yes, goto 66, else goto 61
  • the manual override may be activated asynchronously, anytime during the execution of this method.
  • Opening and closing the valve may use either symmetric or asymmetric criteria and parameters.
  • opening the valve may require the activation of both the infrared and capacitive sensors; closing the valve may be triggered by only one of the sensors.
  • a mathematical algorithm may operate on sensors readings for a plurality of occurrences/events. For each event, the correct result (activation to ON or OFF, or no activation) is also stored.
  • the Correct Result (CR) is the output after step 65 (Fig. 10) or the output of module 78 (Fig. 11), which also includes the user's override command.
  • a best fit algorithm is implemented, to change the activation parameters or thresholds, to best fit the decision for the whole set of events, to the Correct Results there.
  • step (b) The decision parameters are updated to include the best fit parameters found in step (b).
  • Steps a-c are repeated to improve the decision parameters of the automatic faucet, as the system gathers experience in that specific environment
  • Fig. 11 details a data flow diagram of an adaptive automatic faucet with manual override:
  • the decision module 73 also takes into account the sensors evaluation parameters table 72.
  • module 76 The output from module 76, together with the manual override 77 command, are processed in the parameters update 78 module.
  • the parameters update 78 activates, if required, updates in the parameters table 72 and the history table 74.
  • the decision threshold of one of the sensors should be increased or reduced. Or maybe more importance (an increased relative weight) should be accorded to one sensor vs. the other.
  • the history table 74 may also include data from a time/date module 79. This may be used to detect patterns of use of the faucet - the system learns the user's habits, and relies on these learned habits to improve the activation decision.
  • a user brushes her teeth every night at 22.00 .
  • This information is stored in the history table 74 as a reliable habit, which occurred several times.
  • the system will then activate the faucet at about that time every night, even if the sensors data is not so reliable, or below the usual decision threshold.
  • the above system and method may be used to also control the temperature of the water.
  • the user can then use the automatic control means to both open and close the valve, and to determine the temperature of the water supplied.
  • two outlets may be available, one for cold water and the other for warm water; the user may choose to activate either one of the outlets.
  • separate control means may be used to control the opening/closing of the water supply, and the temperature of the water.
  • Fig. 12 details a shower device 18 with dual sensor means including capacitive (with electric field 31) and IR cone (IR sensor cone 21) sensors.
  • the direction of the IR sensor and the capacitive sensors may be adjusted so as to best detect the presence of a person taking a shower there.
  • Fig. 13 illustrates a shower device 18 with dual sensor means including a capacitive sensor field 31 around the shower device 18 and an IR sensor hollow cone 22 under the shower 18.
  • the IR sensor beam in this embodiment may be somewhat more difficult to implement, such as illustrated in Figs. 4 and 5. It may be more effective in detecting a request to activate the faucet (turn water ON or OFF). Flowing water may interfere to a lesser extent with its operation.
  • Fig. 14 illustrates a shower system with multiple sensor means including capacitive sensors 331, 332 and IR cone sensors 231, 232. These sensors may be installed in various locations to detect the presence of adults and children reliably.
  • a manual override control 441 may be used to turn the water on and off while the person is taking a shower, as the need be.
  • Fig. 15 details a flow chart of a dual/multiple sensor automatic faucet with separate ON/OFF criteria and manual override. Automatic shower activation method
  • the method includes:
  • the signals from the two sensors are being read continuously.
  • the sensors readings will be evaluated according to a predefined algorithm, and using a first criterion A with related parameters.
  • open valve 54 commands to the electro-mechanical device 42 are issued, to open the water flow.
  • the signals from the two sensors are being read continuously.
  • close valve 58 commands to the electro-mechanical device 42 are issued, to close the water flow; goto 51.
  • the optional Timeout feature measures the time since activation of water flow (entering ON state) and will close the water after a predetermined time delay. For example, the user may set this parameter for 2 minutes or 5 minutes.
  • more sensors may be used and processed to further enhance a decision to turn the faucet ON or OFF.
  • the present invention relates to a device and method for saving water and improving the performance of an automated faucet or shower.
  • the device uses a dual sensor technology to reduce the false alarm rate and increase reliability of true activation - probability of true recognition of activation.
  • the IR sensor or transmitter/receiver (T/R) sensor pair is located under the faucet outlet, to form a cone of detection.
  • the IR sensor is located in the center of the faucet.
  • a sensors array is located around the openings for water.
  • the new technology may be used, for example, in regular, pull-out or pulldown faucets. Various applications of the technology are optional.
  • the faucet further includes a manual override mechanism, to activate or stop the water flow, in case the automatic detection means are in error.
  • the manual mechanism may further be used to adjust the water temperature to a desired value, and/or for manual operation when desired, irrespective of the sensor's activation.
  • This feature may be especially important in domestic use, where a user will not tolerate in his/her home a faucet not operating, or supplying water uncontrollably.
  • the faucet controller will use different criteria or thresholds for ON (opening the water) and for OFF (closing it), since the flowing water may change the environment for the sensors. Other factors may also affect the readings of sensors during the ON and/or OFF transitions.

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Domestic Plumbing Installations (AREA)

Abstract

La présente invention concerne un dispositif robinet automatique comprenant une soupape de régulation du débit d’eau et des moyens de commande de soupape. Dans les moyens de commande, la décision portant sur la fermeture ou l’ouverture de la soupape dépend des indications fournies par les moyens à double capteur. Les moyens à double capteur comportent des capteurs infrarouges et des capteurs capacitifs. Une décision portant sur la fermeture ou l’ouverture de la soupape dépend des indications fournies par les moyens à double capteur, un procédé d’activation du robinet automatique comprenant : la lecture des entrées du capteur, les signaux provenant des deux capteurs (infrarouges et capacitifs) étant lus en continu; le calcul de l’évaluation OUVERT avec le critère A : les lectures des capteurs seront évaluées; ouvrir la soupape ?, Si oui, les ordres adressés à un dispositif électromécanique sont émis, pour autoriser l’eau à s’écouler.
PCT/IB2009/050369 2008-02-01 2009-01-29 Robinet automatique et douche WO2009095879A2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB0801863.2 2008-02-01
GBGB0801863.2A GB0801863D0 (en) 2008-02-01 2008-02-01 Automatic faucet device and method
GB0814708A GB2457141A (en) 2008-02-01 2008-08-12 Automatic faucet
GB0814708.4 2008-08-12

Publications (2)

Publication Number Publication Date
WO2009095879A2 true WO2009095879A2 (fr) 2009-08-06
WO2009095879A3 WO2009095879A3 (fr) 2009-12-23

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PCT/IB2009/050369 WO2009095879A2 (fr) 2008-02-01 2009-01-29 Robinet automatique et douche

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GB (2) GB0801863D0 (fr)
WO (1) WO2009095879A2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011088533A1 (fr) * 2010-01-21 2011-07-28 Marcopolo S.A. Système capacitif d'actionnement de mécanisme de passage de liquide et son utilisation dans des véhicules de transport collectif
US8944105B2 (en) 2007-01-31 2015-02-03 Masco Corporation Of Indiana Capacitive sensing apparatus and method for faucets
US9010377B1 (en) 2011-06-17 2015-04-21 Moen Incorporated Electronic plumbing fixture fitting
US9194110B2 (en) 2012-03-07 2015-11-24 Moen Incorporated Electronic plumbing fixture fitting
US9657471B2 (en) 2012-11-02 2017-05-23 Kohler Co. Touchless flushing systems and methods

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9032565B2 (en) 2009-12-16 2015-05-19 Kohler Co. Touchless faucet assembly and method of operation

Citations (3)

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Publication number Priority date Publication date Assignee Title
US4886207A (en) * 1988-09-14 1989-12-12 Lee Chang H Automatic mixing faucet
US20070057215A1 (en) * 2001-11-20 2007-03-15 Parsons Natan E Passive sensors and control algorithms for faucets and bathroom flushers
US20070157978A1 (en) * 2004-01-12 2007-07-12 Jonte Patrick B Multi-mode hands free automatic faucet

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IL105133A0 (en) * 1993-03-22 1993-07-08 Madgal Glil Yam Electronically operated faucet including sensing means
DE59308847D1 (de) * 1993-05-07 1998-09-10 Schrott Harald Berührungslos betätigbare Sanitärarmatur
AU8404398A (en) * 1997-07-18 1999-02-10 Kohler Company Advanced touchless plumbing systems
US7174577B2 (en) * 2003-01-16 2007-02-13 Technical Concepts, Llc Automatic proximity faucet
WO2004065829A2 (fr) * 2003-01-16 2004-08-05 Technical Concepts Llc Systeme et procede de commande prioritaire de robinet automatique de proximite
US7516939B2 (en) * 2004-12-14 2009-04-14 Masco Corporation Of Indiana Dual detection sensor system for washroom device
US7614096B2 (en) * 2005-03-16 2009-11-10 Masco Corporation Of Indiana Control for an automatic plumbing device
WO2007059051A2 (fr) * 2005-11-11 2007-05-24 Masco Corporation Of Indiana Systeme electronique de salle de bain integree
WO2008057630A2 (fr) * 2006-10-27 2008-05-15 Kum Foong Boey Système de commande de robinet et procédé

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4886207A (en) * 1988-09-14 1989-12-12 Lee Chang H Automatic mixing faucet
US20070057215A1 (en) * 2001-11-20 2007-03-15 Parsons Natan E Passive sensors and control algorithms for faucets and bathroom flushers
US20070157978A1 (en) * 2004-01-12 2007-07-12 Jonte Patrick B Multi-mode hands free automatic faucet

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8944105B2 (en) 2007-01-31 2015-02-03 Masco Corporation Of Indiana Capacitive sensing apparatus and method for faucets
WO2011088533A1 (fr) * 2010-01-21 2011-07-28 Marcopolo S.A. Système capacitif d'actionnement de mécanisme de passage de liquide et son utilisation dans des véhicules de transport collectif
US9010377B1 (en) 2011-06-17 2015-04-21 Moen Incorporated Electronic plumbing fixture fitting
US9194110B2 (en) 2012-03-07 2015-11-24 Moen Incorporated Electronic plumbing fixture fitting
US9758951B2 (en) 2012-03-07 2017-09-12 Moen Incorporated Electronic plumbing fixture fitting
US9828751B2 (en) 2012-03-07 2017-11-28 Moen Incorporated Electronic plumbing fixture fitting
US9657471B2 (en) 2012-11-02 2017-05-23 Kohler Co. Touchless flushing systems and methods
US10851532B2 (en) 2012-11-02 2020-12-01 Kohler Co. Touchless flushing systems and methods
US11560702B2 (en) 2012-11-02 2023-01-24 Kohler Co. Touchless flushing systems and methods
US12098534B2 (en) 2012-11-02 2024-09-24 Kohler Co. Touchless flushing systems and methods

Also Published As

Publication number Publication date
GB2457141A8 (en) 2009-08-12
GB2457141A (en) 2009-08-12
GB0801863D0 (en) 2008-03-05
WO2009095879A3 (fr) 2009-12-23
GB0814708D0 (en) 2008-09-17

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