JP2009235734A - Kitchen faucet device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that the state of not having running water is brought about depending on an object to be washed, which is stretched out by a user of a kitchen faucet device. <P>SOLUTION: A radio wave sensor is arranged in a sink on a side where a counter is arranged; detection areas are arranged near the radio wave sensor inside the sink and near a spout of the kitchen faucet device, respectively; and a prohibited area for prohibiting water supply is provided between the detection areas. A hand stretching action and a hand washing action in the use of a kitchen faucet are separated from each other, and objects to be detected, corresponding to the respective actions, are detected in the two detection areas, so that the water can be supplied from the kitchen faucet device. In addition, since the prohibited area is positioned between the detection areas, the kitchen faucet device can rapidly stop the supply of the water in the implementation of an action which dispenses with the water. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a faucet device provided in, for example, a hand-washing place of a public toilet, a bathroom vanity, or a kitchen, and detects water to be washed or a cup held by the user's hand or the user. The present invention relates to a hand-washing device that controls water discharged from a stopper device.

  When you do not want to touch the faucet device with wet hands after hand washing, or when you have a cooking utensil, food, etc. and your hand is full, water discharge starts automatically without operating the faucet faucet There is an automatic faucet device that can be used.

  Patent Document 1 discloses a system in which two types of detection sensors are arranged on a kitchen sink to continuously detect not only washing but also other dishes at the time of dishwashing and prevent them from being left after washing. is doing.

Japanese Patent Laid-Open No. 4-83027

  The conventional technique described in Patent Document 1 described above is a system in which a valve is opened when an object such as a human body or tableware is detected in a kitchen sink, and tap water is supplied from a water outlet. In addition, since two sensors, the area near the spout and the wide area, are arranged for object detection, even if tableware or cooking utensils are detected by the sensor for wide area detection, the human body near the spout for a certain period of time. If it is not detected, it is an easy-to-use system that can stop the supply of tap water.

  However, since the light-receiving / detecting element is used as the detecting means, and the light-receiving element detects a part of the amount of infrared rays radiated from the light-projecting element reflected from the detected object, it is a detected object. Depending on the material and color of the tableware and cooking utensils, something that cannot be detected occurs. For example, a black object such as a frying pan or a transparent cup absorbs or transmits infrared light emitted from the light emitting element, so that the reflected light does not reach the light receiving element. The supply of tap water will not be performed if the detected object is simply put out near the water outlet.

  In recent years, wash bowls (or sink sinks) and faucet fittings have been proposed in various forms in consideration of harmony with the interior, and tap water has been supplied from the top to the bottom. In addition to the trajectory of the water flow, it has various parabolas such as discharging water obliquely upward and forward. On the other hand, the user puts his hand down the spout regardless of the shape of the faucet device, so the area where the detection means detects the object to be detected and the area where the user puts out the washing object or hand match. However, tap water may not be supplied, or water may be stopped during use even though water discharge is once started and water is used. Therefore, in order to find the detection point, the detected object is swung up and down, left and right, or moved closer to the very vicinity of the spout, which is not user-friendly and is hand-washed at a place other than the predetermined cleaning position. Therefore, there was a problem that the washing water splashes in addition to the wash bowl, and the surrounding area becomes wet and unsightly.

  Accordingly, an object of the present invention is to provide an easy-to-use hand-washing device in which water discharge starts immediately when a person using a water faucet device puts it out regardless of an object to be cleaned.

In order to achieve the above object, according to one aspect of the present invention, a transmitter that generates a transmission wave;
An antenna that radiates the transmission wave and receives at least one of a reflected wave and a transmitted wave by the object of the transmission wave as a reception wave;
A difference circuit that extracts a difference between frequency components of the transmission wave and the reception wave and outputs a difference signal;
A high-frequency sensor having a detection unit that amplifies the differential signal and identifies the presence or absence of an object;
A water discharge section for supplying tap water;
A valve for switching water discharge from the water discharge unit;
A control unit that controls opening and closing of the valve based on a detection signal output from the detection unit;
A sink for receiving tap water discharged from the water discharge unit;
A kitchen faucet device having a counter adjacent to the sink,
The control unit performs opening / closing control of the valve based on a detection signal output from the detection unit based on detection information obtained from two independent detection areas,
The antenna is installed on the sink side surface on which the counter is disposed so as to radiate radio waves toward the water discharger,
Between the two detection areas, there is a prohibition area that prohibits opening / closing control of the valve even if a detection object is detected.

  ADVANTAGE OF THE INVENTION According to this invention, when a user uses a water faucet device, the user-friendly hand washing apparatus which does not get lost in the position to put out a hand is provided.

Embodiments of a hand washing apparatus according to the present invention will be described below in detail with reference to the drawings.
(First embodiment)

  FIG. 1 (a) shows an overview of the first embodiment of the hand-washing apparatus, FIG. 1 (b) shows a top view of FIG. 1 (a), and FIG. 1 (c) shows FIG. 1 (b). A sectional view taken on line A is shown. FIG. 2 shows a control block diagram.

  A hand-washing device 10 shown in FIG. 1 includes a faucet device 1 for supplying tap water, a ceramic wash bowl 2 that receives water discharged from the faucet device 1, and a user's interior in the wash bowl 2. A radio wave sensor 3 for detecting that an object to be cleaned such as a hand, a cup or a rag has entered, a valve unit 4 for switching water discharged from the faucet device 1, and a signal from the radio wave sensor 3 And a control unit 5 that controls on and off of the valve unit 4. Here, the radio wave sensor 3 is disposed on the front side, which is the side facing when the user approaches the wash bowl 2.

The hand-washing apparatus 10 has two detection areas, the first detection area a is the front side of the inner surface of the wash bowl 2, is set in the vicinity of the radio wave sensor 3, and the second detection area b is It is set near the point where the trajectory of water discharged from the faucet device 1 and the overflow surface of the wash bowl intersect.
Since the radio wave sensor reflects against water or metal, it can be detected regardless of the material of the object to be detected. In the first detection area a, when an object to be cleaned such as a user's hand enters, The radio wave sensor 3 detects the object to be detected, and the result is transferred to the control unit 5. The control unit 5 opens the valve unit 4 and discharges tap water from the faucet device 1. Therefore, the 1st detection area a is an area which has a switch function, and it is better to provide the marker 6 in the edge part 2a before the wash bowl 2 using a glaze so that a user may put out a hand easily. Another easy way to use is to form the wash bowl 2 with a resin or glass transparent material and to illuminate a light emitting member such as an LED to induce the user's washing action Good. The second detection area b is an area having an automatic water stop function for identifying whether to continue water supply from the faucet device 1 or to switch to water stop. It is set to control the opening and closing of the valve based on the detection information in the second detection area b for the first time when the presence of the user is detected and water discharge from the faucet device 1 is started. Tap water is not supplied from the faucet device 1 for the act of putting the hand directly into this area before starting, or the act of placing an object in the wash bowl or picking up the object placed in the wash bowl. . Even when a detection signal for continuing the supply of tap water is obtained from the second detection area b, if a detection signal for prohibiting water supply is obtained from the first detection area a, the water supply is prohibited. It has become. In addition, the radio wave sensor 3 is programmed so as not to continue to detect an object placed in the first detection area a during water supply and keep water out. A detailed control flow will be described later.

Next, the radio wave sensor 3 which is a detection means will be described with reference to FIG.
The radio wave sensor 3 includes an oscillation circuit 11 that generates radio waves, a transmission / reception integrated antenna 12 that transmits radio waves generated by the oscillation circuit 11 to a detected object, and receives reflected radio waves from the detected object, and an antenna 12. And a detection unit 13 that determines the presence / absence of an object to be detected based on the received signal. The antenna 12 may be a separate transmission / reception unit. However, in the present invention, in order to install the antenna 12 inside the wash bowl 2, the miniaturization is prioritized and integrated. As described above, the radio wave radiated from the radio wave sensor 3 can be transmitted if the material of the wash bowl 2 is other than metal, and the amount of radio wave transmission depends on dirt such as water droplets and scales. For this reason, it can be disposed on the front side of the wash bowl 2 that may not be installed by other sensing methods such as an infrared sensor, an ultrasonic sensor, and a capacitance sensor, and which may become dirty.
The detection unit 13 includes a mixer unit 14 that mixes the local signal from the oscillation circuit 11 and the RF signal from the antenna 12, a low amplification unit 15 that amplifies the Doppler signal extracted by the mixer unit 14 at a low magnification, The frequency conversion unit 17 is configured to pass both the high amplification unit 16 that amplifies at a magnification and pass the signal after passing through each frequency analysis or only a predetermined frequency. The frequency conversion unit 17 may be configured by software processing or an electric circuit, but in the present invention, software processing is used. The frequency analysis performed by the frequency conversion unit 17 may use FFT analysis, but in the present invention, it has filters divided into a plurality of bands, and is performed depending on the presence or absence of waveforms after passing through each filter. is doing. Hereinafter, signal processing using this filter will be described.

  Next, the control flow of the discharge water from the faucet device 1 performed by the detection unit 13 will be described using the flowchart shown in FIG. 3 and the waveform of the Doppler signal shown in FIGS. 4 and 5.

  First, in S01, the detection unit 13 extracts the signal from the low amplification unit 15, and then in S02, the maximum value and the minimum value of the signal Vs when the frequency conversion unit 17 passes the low-pass filter of 10 Hz or less are obtained. It is determined whether Vs> V1 or Vs <V2. If a Doppler signal as shown in FIG. 4B is generated at this time, the detection unit 13 can determine that the user's hand has entered the first detection area a, and the valve unit is transferred from the detection unit 13 to the control unit 5 in S03. 4 is turned on, the valve unit 4 is opened, and tap water is supplied from the faucet device 1 toward the wash bowl 2. At this time, the low amplification factor is related to the transmission intensity of the radio wave sensor 3, the antenna gain of the antenna 12, and the attenuation amount of the radio wave in the wash bowl 2. The following are set. Accordingly, it is possible to identify and detect the movement of the hand that stops or holds the first detection area a by comparing with the threshold value V1 or V2, while picking up the object or picking up the object in the wash bowl 2. Since the detection signal Vs is small and does not exceed V1 or less than V2, the radio wave sensor 3 determines that the operation is not an operation for the user to use the faucet device 1, and the movement from the faucet device 1 There is no supply of tap water. Moreover, it is the operation | movement which passes the upper part of the wash bowl 2, and takes the cup of the back side of the faucet device 1, the operation | movement which cleans the faucet device 1, and also the speed of the water flow which drains the water of a cup is 10 Hz or more. Since the detection signal Vs has almost no amplitude in the low-pass filter of 10 Hz or less, the detection unit 13 can determine that the movement is not caused by the intrusion of the hand, and can ensure water stoppage. A hand washing apparatus without water discharge can be provided. In this way, tap water supply can be started in a timely manner by identifying from the Doppler signal the speed change that decelerates and the slow movement just before stopping toward the faucet device in order to use the faucet device. . In order to take the change in speed at which the hand decelerates toward the hand-washing device more reliably, for example, a band pass filter with a band of 15 to 50 Hz is provided in the frequency converter, and a predetermined threshold value is first set to this band pass filter. After detecting the hand that is the object to be detected because the obtained Doppler signal is more than that, if the signal of the low pass filter of 10 Hz or less is extracted by the frequency conversion unit as described above, It can be detected reliably.

  Next, the detection unit 13 always keeps discharging tap water regardless of whether or not water is used during the travel time until the user supplies water from the first water supply area a to tap water in S04. The timer 1 (T) is counted for 1 second. During this time, in places where the hand-washing device 10 is installed, for example, in welfare facilities and multipurpose toilets, a longer time is set according to the relatively slow movement of the user, and the traffic of users such as stations, service areas, and airports is intense. When the moving speed is fast, it may be adjusted using an external switch (not shown) so that it can be arbitrarily changed, for example, shortened. Next, in S05, the detection unit 13 extracts a signal from the high amplification unit 16 in order to identify the user's cleaning state in the second detection area b, and then in S06, the frequency conversion unit 17 performs 1 Hz or more. It is determined whether the Doppler signal Vs when passing through the high-pass filter satisfies Vs> V5 or Vs <V6. At this time, when a waveform having a large amplitude as shown in FIG. 5A is obtained, a Doppler signal based on the water flow of tap water scattered by the user's hand or fingertip is shown. Part 4 is continued in the “on” state. However, when the maximum value and the minimum value of Vs shown in FIG. 5B are V3 <Vs <V5 or V4 <Vs <V6, the user finishes the hand washing operation, and the faucet device 1 water In S07, the detection unit 13 instructs the control unit 5 to turn off the valve unit 4 and the valve unit 4 is closed. However, in the case of V4 <Vs <V3 shown in FIG. 5 (c), the fluctuation of the water surface in the state where water supplied from the faucet device 1 is drawn into a cup or the like is detected. The detection unit 13 continues the valve unit 4 in the “on” state. Thereafter, when water overflows from the cup, in order to obtain a Doppler signal accompanying the reflected radio wave from the water scattered around the cup, the amplitude intensity as shown in FIG. Set part 4 to “off”.

  Another method of water stop control of the valve unit 4 in S06 of the detection unit 13 will be described using the Doppler signals of FIGS. FIG. 6A shows the same waveform as FIG. 5B, and the water splashes on the surface of the hand when the user puts his hand against the water in the second detection area and is washing the hand. The Doppler signal waveform after the reflected signal of the radio wave from the signal passes through the high amplification unit 16 in the detection unit 13 and passes through the high pass filter of 1 Hz or more in the frequency conversion unit 17. On the other hand, FIG. 6B shows a frequency conversion unit after passing through the high amplification unit 16 when the user is performing a water draining action in the prohibition area c shown in FIG. 17 is a Doppler signal waveform that has passed through a high-pass filter of 1 Hz or higher. Therefore, when the thresholds V7 and V8 are newly provided and the waveform of the Doppler signal in FIG. 6B is obtained, if the maximum and minimum values of the Doppler signal Vs become Vs> V7 or Vs <V8, the detection unit 13 The control unit 5 may be instructed to close the valve unit 4. In this way, in order to identify an operation other than the cleaning operation while supplying tap water, by providing threshold values V7 and V8 for identifying the maximum signal waveform, water supply of the radio wave sensor 3 is continued in the second detection area b. Since it is set as a detection area and the area on the near side including the first detection area a can be set as a prohibition area for prohibiting water supply, the water stop control of the hand washing device can be performed promptly after using the faucet device. The handwashing operation has been explained, but the same can be said during cleaning of cooking utensils, toothbrushes, rags, etc. in addition to the hand. By doing so, it can be determined whether it is in use or the specification is finished, and the tap water can be supplied in a timely manner.

7A has the same waveform as FIG. 4A, and shows a state where the user puts his hand in the first detection area shown in FIG. 1 and his hand stops in the space above the radio wave sensor 3. 13 shows a Doppler signal waveform that has passed through a low-pass filter of 10 Hz or less in the frequency converter 17 after passing through the low amplifier 15 in FIG. On the other hand, FIG. 7B shows a Doppler signal waveform that has passed through the low-amplification unit 15 when the user is in the prohibited area c and then passed through a low-pass filter of 10 Hz or less in the frequency conversion unit 17. .
As shown in FIG. 1 (c), the radio wave sensor 3 emits a radio wave beam from the end 2a of the wash bowl 2 toward the faucet device 1, and therefore exists between the first and second detection areas. Even if a detected object is detected in the area to be detected, if the detected object exists in any of the prohibited areas where the control of the valve is prohibited, it can be detected. Thus, when the faucet device 1 is stopped, the valve 4 is turned on only when a detected object in the first detection area a is detected, and the water supply state is established. The water supply state is continued only when the detected object in the possible area b is detected, and a plurality of detection areas and a prohibited area for prohibiting water supply between them can be realized in the radio wave beam. Take what you dropped in the wash bowl 2 When you do not want water to be raised or when you want to drain water between the radio wave sensor 3 and the second detection area b on the front side of the wash bowl 2 as described above, or to discard the water in the cup Even if there is, water can be stopped immediately.

  In the present invention, a capacitive element is inserted in series with the output signal at the subsequent stage of the high amplification circuit 16 so as not to be affected by the fluctuation of the base potential due to the phase interference wave obtained by the radio wave sensor 3, so that the bias potential is A high-pass filter of 1 Hz or higher was configured to reliably identify the water flow change between the purpose of cutting the water, the splashing water, the water surface drawn into the cup, and the water flow alone. When the change in water flow during hand washing, during drinking cup water and at the end of washing is obtained as the amplitude intensity of the Doppler signal by increasing the antenna gain, the signal after passing through the high amplification unit 16 without using the signal conversion unit 17 On the other hand, a threshold value may be set, and it may be determined whether the water discharge is continued or stopped by comparison with the threshold value as in S06. In that case, since the time delay due to the capacitive element does not occur, it is possible to immediately switch the valve unit 4 on and off in response to the user's operation, and it is possible to provide a hand-washing device having high-speed response. Become. Further, the magnification of the high amplification unit 16 needs to be low when close to the radio wave sensor 3 due to the trajectory of the water flow, and high when far away from the radio wave sensor 3, and when arbitrarily selected from magnifications of 500 to 2000 times, FIG. As shown, the state of the user can be easily determined using the change in the water flow. By using the high-pass filter in this way, it is possible to easily recognize a relatively fast change in water flow that is different from the movement of the user's hand. In addition, the detection unit decides whether to detect or not detect using the optimum amplification factor to detect the movement of the hand and the change in the water flow, which are two detection objects that differ in the amount of reflection of the radio wave depending on the area where the radio wave is received. Therefore, it is possible to detect without missing the two actions of the user, or because the amplification factor is reduced to see the movement of the hand entering the wash bowl during still water, the reflection area is small in the water flow in the wash bowl The received signal cannot be obtained and the discarded water is not detected. In addition, during water discharge, the amplification factor is increased to detect the water flow, so an object is placed near the radio sensor for oversized reflected signals that are generated because the distance between the radio sensor and the object to be detected is small. It is possible to provide a hand-washing device that does not leave the water untouched because it can be distinguished from actions during washing, such as whether or not a person is leaning.

As described above, when the first detection area a is provided in the vicinity of the front side of the wash bowl 2 and is used as an operation switch, it is possible to concentrate on the act of “draining water from the faucet device 1”. As a result, tap water is supplied from the faucet device 1 and it becomes possible to put out a hand against the water from the faucet device in the second detection area b which is the next action. You can concentrate on just “sending out”. Therefore, since the user can separate and perform the two actions, the user can surely wash his / her hand without wondering the position to send out. On the other hand, each action of the hand washing device 10 can be reliably detected by the detection unit 13, and water does not come out during use start or use, or water supply is not stopped.
As described above, when the user's actions are divided into two detection areas, the first detection area is used regardless of the posture and height of the person when using water in the second detection area b. Since it is sent out to the same height as “a”, a foam cap is attached so as to supply a water-like water flow from the faucet device 1 in accordance with the washing position, or it corresponds to the position of the wash bowl 2. By making the area wide and preventing splashed water from jumping out of the wash bowl 2, the usability is further improved and the cleanliness can be maintained. In addition, the explanation has been made on the assumption that the hand-washing action has been performed so far, but the action of washing the toothbrush or drawing water into the cup is similar to whether each hand holding an object that wants to use water enters the first water supply area a. In the second detection area b, in order to identify the change in the water flow in the cup or the change in the water flow scattered on the toothbrush by the detection unit, it is necessary to determine whether the water discharge continues or stops according to the user's action. Can do. Furthermore, since the detection area is not only divided, but also after detection in the first detection area, only the second detection area is used as the detection area. With regard to the act of taking out the items placed in the wash bowl, the user's hand will enter the second detection area without detecting it in the first detection area, so there is no transition from the water stop state to the water supply state. An easy-to-use faucet device can be provided.

(Second embodiment)
FIG. 7A shows a schematic view of a second embodiment in which a hand-washing device is incorporated in a kitchen faucet device, and FIG. 7B shows a cross-sectional view taken along B in FIG.

  The kitchen faucet device 50 includes a hand-washing device 30, a cooking table 31, a stove (not shown), and a front panel 32. The hand-washing device 30 includes a faucet device 21 for supplying tap water, a sink 22 that receives water discharged from the faucet device 21, and a user's hand, a knife, a cutting board, and the like inside the sink 22. A signal from the radio wave sensor 23 that detects that a detection object that is an object to be cleaned, such as a cooking utensil or food, has entered, a valve unit 24 that switches water discharged from the faucet device 21, and a signal from the radio wave sensor 23 And a control unit 25 that controls the on / off of the valve unit 24. Here, the radio wave sensor 23 is a side surface of the sink 22 on the side where the counter is arranged, and is installed in a state of being concealed outside the sink (below the cooking table 31).

The hand-washing apparatus 30 has two detection areas, the first detection area d is set in the vicinity of the radio wave sensor 23 on the cooking work table 31 side on the inner surface of the sink 22, and the second detection area e is The trajectory of water discharged from the faucet device 21 is set in the vicinity of the point where the trajectory of the wash bowl intersects.
As in the first embodiment, in the first detection area d, when an object to be cleaned such as a user's hand enters, the detection unit (not shown) of the radio wave sensor 23 places the valve unit 24 in the control unit 25. The area has a switch function in order to issue a command for opening and to discharge tap water from the faucet device 21. Since the first detection area d is on the wall surface of the sink 22, it is convenient when the faucet device 21 is used across the sink 22 from the front of the work table, and the user stands in front of the sink. In this case, it is easy to use because the supply of tap water can be started without putting a hand all the way to the sink 22. In order to further improve usability, it is better to provide the markers 26 on the upper surface of the cooking work table 31 and the side surface 22a of the sink 22 so that the user can easily put out his / her hand. If the marker 26 is a seal type that can be removed until the user gets used to it, the kitchen faucet device 50 may be simply configured, and the cooking work table 31 may be made of resin or glass. When formed of a material that transmits visible light, a light-emitting member such as an LED may be turned on to induce the user's cleaning action. The second detection area e is an area having an automatic water stop function for identifying whether to continue water supply from the faucet device 21 or to switch to water stop.

  The configuration of the radio wave sensor 23 and the control flow of the detection unit of the radio wave sensor 23 are omitted as in the first embodiment. In addition, the radio wave beam is reflected not only by the user's hand and water but also by metal materials, so it can be detected regardless of the color, shape, or material of cooking utensils such as kitchen knives, pans and pans. Even if you do not hold your hand over the first detection area d, you can supply tap water from the faucet device 21 just by holding the object to be cleaned, It can be operated from a place away from the faucet device 21 across the sink 22 from the front of the table, which is convenient.

  Similarly to the first embodiment, the radio wave sensor 23 radiates a radio wave beam from the side surface 22a of the sink 22 on the side where the counter is arranged toward the faucet device 21, and therefore, the first and second detection areas. If the object to be detected is present in any of the prohibited areas for prohibiting water supply existing between them, it can be detected, but the object to be detected in the first detection area d when the faucet device 21 is stopped. Only when the valve unit 24 is turned on to supply water, and when the faucet device 21 supplies water, the water supply state is continued only when the detected object in the second detectable area e is detected. A plurality of detection areas in the beam and a prohibited area f can be realized between them, and when the user does not want to take out water, such as picking up something dropped on the sink 22 or placing a cooking utensil on the sink 22, The signal waveform from the frequency conversion unit or the signal after passing through the high amplification unit is the same as in the first embodiment even when the remaining water after washing utensils such as knives is washed from the front of the work table. By comparing the waveform with the threshold value, it is possible to stop water and provide an easy-to-use hand-washing device capable of controlling spout water at a timing according to a user's request for water.

It is a figure explaining a 1st Example. It is a block diagram of a radio wave sensor. It is a figure which shows the control flow of a detection part. It is a figure which shows the Doppler signal waveform obtained in a detection part. It is a figure which shows the Doppler signal waveform obtained in a detection part. It is a figure which shows the Doppler signal waveform obtained in a detection part. It is a figure which shows the Doppler signal waveform obtained in a detection part. It is a figure explaining a 2nd Example.

Explanation of symbols

1, 21, faucet device 2, wash bowl 3, 23, radio wave sensor 4, 24, valve unit 5, 25, control unit 10, 30, hand washing device oscillating circuit antenna detection unit mixer unit low amplification unit high amplification unit frequency conversion Part 22, sink kitchen faucet device

Claims (1)

A transmission unit for generating a transmission wave;
An antenna that radiates the transmission wave and receives at least one of a reflected wave and a transmitted wave by the object of the transmission wave as a reception wave;
A difference circuit that extracts a difference between frequency components of the transmission wave and the reception wave and outputs a difference signal;
A high-frequency sensor having a detection unit that amplifies the differential signal and identifies the presence or absence of an object;
A water discharge section for supplying tap water;
A valve for switching water discharge from the water discharge unit;
A control unit that controls opening and closing of the valve based on a detection signal output from the detection unit;
A sink for receiving tap water discharged from the water discharge unit;
A kitchen faucet device having a counter adjacent to the sink,
The control unit performs opening / closing control of the valve based on a detection signal output from the detection unit based on detection information obtained from two independent detection areas,
The antenna is installed on the sink side surface on which the counter is disposed so as to radiate radio waves toward the water discharger,
The kitchen faucet device according to claim 1, wherein there is a prohibition area for prohibiting the opening / closing control of the valve even if a detection object is detected between the two detection areas.

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