JP2009155912A - Faucet device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a faucet device causing less erroneous detection by forming a water discharge detecting and defining area in an area where an object is not placed near the side wall of a water receiving area where the movement of human bodies is less. <P>SOLUTION: This faucet device comprises a water receiving part 5 having a spout 2 with a discharge port 1 for discharging water, a water receiving surface 3 for receiving the water discharged from the discharging port 1, and side walls 4 vertically formed around the water receiving surface; a valve 6 for controlling the discharge and stop of the water from the discharge port 1, a radio sensor 7 for detecting the movement of a body to be detected and outputting a detection signal 9; and a control part 8 for controlling the drive of the valve 6 according to the detection signal. The control part 8 opens the valve 6 according to the detection signal 9 obtained from the movement of the body to be detected near the side walls of the water receiving part 5. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention relates to a faucet device, and more specifically, to a faucet device that is provided in a hand-washing place, a toilet, a kitchen, and the like and that controls water discharge using a radio wave sensor such as a microwave.

As a water discharge device that automatically controls water discharge by detecting the human body, the human body or human hand is detected and the presence or absence of the detected body is detected based on the intensity of the reflected radio wave from the detected body. There was a faucet device that stopped water when the detected object was not detected.

Further, a water faucet device is disclosed in which a photoelectric sensor is provided on a water receiving surface that receives water discharge, the presence or absence of a cleaning object is determined according to reflected light of light projected and received from the photoelectric sensor, and water discharge is controlled (for example, Patent Document 1).
Tokusho Sho 61-075570

  However, if it is the water discharge control method which determines the presence or absence of the object inside a water receiving part like patent document 1, a sensor will make a water discharge determination by putting an object inside a water receiving part, and a user intends There was a possibility of discharging water at the timing when it was not.

  In addition, when controlling water discharge using a sensor that detects the movement of an object, such as a radio wave sensor, the operation of placing an object on the inside of the water receiving unit or a spout provided near the water receiving unit Therefore, there is a possibility that water will be discharged even when the user does not intend to discharge water.

  Therefore, in the present invention, a faucet device with less false detection is provided by providing a water discharge detection range in an area where no object is placed in the faucet device and in the vicinity of the side wall of the water receiving portion where movement of the human body is small. The purpose is that.

  In order to achieve the object, the water receiving device includes a spout having a water discharge port for discharging water, a water receiving surface when water discharged from the water discharging port is received, and a side wall erected around the water receiving surface. , A valve that controls water discharge from the water outlet, a radio wave sensor that detects the movement of the detected object and outputs a detection signal, and controls the driving of the valve based on the detection signal A faucet device having a control unit, wherein the control unit opens the valve based on a detection signal obtained from the movement of the detected object in the vicinity of the side wall of the water receiving unit. A water faucet device can be provided.

  Moreover, according to one aspect of the present invention, the control unit opens the valve based on a detection signal obtained from the movement of the detection target in the water receiving unit and in the vicinity of the side wall. A faucet device can be provided.

  Moreover, according to one aspect of the present invention, the control unit is based on a detection signal obtained from the movement of the detected object in the vicinity of the side wall different from the side wall on the side where the spout is installed. A faucet device that opens the valve can be provided.

  Moreover, according to one aspect of the present invention, the control unit includes an overflow hole and a water receiving unit provided in the water receiving unit of the side wall for discharging water when the water receiving unit reaches a certain water level. It is possible to provide a faucet device that opens the valve on the basis of a detection signal obtained from the movement of the detection object in the vicinity of the side wall between the opening surface of the portion.

  Moreover, according to one aspect of the present invention, the faucet is characterized in that a notification means is provided for notifying which side wall of the side walls is in close proximity to detect the opening operation of the valve. Equipment can be provided.

  According to the present invention, by providing a water discharge detection confirmation area for confirming that water discharge is performed in the vicinity of the side wall, the user can perform work or place or move an object even inside the water receiving unit. Since the detection is confirmed at a place other than the place where it is to be detected, it is possible to improve the detection accuracy and prevent water discharge at unexpected timing by the user by using the faucet device or operation near the faucet device. I can do it.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 shows a schematic configuration diagram of the faucet device of the present invention. The water faucet device of the present invention includes a spout 2 having a water outlet 1 for discharging water, a water receiving surface 3 for receiving water discharged from the water outlet 1, and a side wall 4 erected around the water receiving surface. , A valve 6 that controls water discharge from the water outlet 1, a radio wave sensor 7 that detects and outputs a detection signal 9 according to the movement of the detected object, and the detection signal And a control unit 8 for controlling the driving of the valve 6 based on the control unit 8, wherein the control unit 8 is obtained from the movement of the detected object in the vicinity of the side wall of the water receiving unit 5. The valve 6 is configured to open based on the detection signal 9. In addition, based on the detection signal 9 obtained from the movement of the detected object, a range in the vicinity of the side wall in which the valve 6 can be opened is set as a water discharge detection determination region 12.

  Normally, in the case of a faucet device, it is possible to discharge water by inserting a detected object on the trajectory of water discharge, but in the case of the present invention, the detected object is provided in the vicinity of the side wall 4. The water discharge can be performed by entering the water discharge detection determination area 12. Here, in the vicinity of the side wall 4 where the water discharge detection determination area 12 is provided, the normal detection of the washing object collides with the side wall for use in the faucet device, and the water receiving part does not want to be touched because it is dirty. It is a dead zone that is rarely used because the water discharge trajectory from the water mouth is not near the side wall. Therefore, as in the present invention, performing the water discharge control by causing the body to be detected to enter the water discharge detection fixed region 12 in the vicinity of the side wall 4 is an intrusion into an area that is not normally used, and this is to start water discharge. The operation is based on the intention of the user. Therefore, as in a conventional faucet device, work near the water discharge trajectory (for example, passing through the upper part of the water receiving part and taking a face-to-face object, washing with soap or other detergent without using water) In this case, it is possible to prevent the faucet device from being driven against the user's intention, such as erroneous water discharge when the user does not want to discharge water, thus improving the usability of the faucet device. It becomes possible.

  Furthermore, by sensing the water discharge detection determination region 12 in the vicinity of the side wall 4 with the radio wave sensor 7, the outside of the water receiver 5 (water discharge) without exposing the sensor to the inside of the water receiver 5 (side receiving water discharge). Since the object to be detected can be detected from the side that does not receive the water, it is possible to conceal the sensor without damaging the appearance of the water receiving part, and to prevent the sensor from being destroyed due to mischief from the outside. Is also possible.

  In the case of the radio wave sensor 7, the user can detect the water discharge operation without coming into contact with the vicinity of the side wall 4 provided with the water discharge detection fixed region 12, and thus, for example, a large number of unspecified people such as public facilities. Even under the environment used by the user, it is possible to control water discharge without coming into contact with the vicinity of the side wall 4 which is highly likely to be dirty, so that the faucet device can be used in a sanitary manner.

  Moreover, in the method of inserting a body to be detected with respect to a water discharge trajectory estimated by a user and discharging water by the insertion as in the case of a conventional water faucet, the position to be detected on the space of the water receiving unit 5 is detected. Since it does not know whether the body can be inserted and water is discharged after insertion, it takes time from hand insertion to water discharge, so the user judges that it is a false detection and further inserts the body to be detected Since the location is changed, there is a possibility that it is out of the original detection range and may lead to erroneous detection. In the present invention, since the detected object is moved with respect to the water discharge trajectory after the detected object is inserted into the water discharge detection fixed region 12 in the vicinity of the side wall 4, the time from the detection of the sensor to the discharge of water is Since the body can be assigned to the movement time from the water discharge detection determination area 12 to the water discharge trajectory, the user can also visually check the water discharge trajectory during the movement of the detected body, and the user can detect The faucet device can be used without wondering where to insert the body. Here, since the distance from the water discharge detection confirmation region 12 to the water discharge locus varies depending on the faucet device, the control unit 8 performs adjustment until the valve 6 is opened after detection in the water discharge detection confirmation region 12. Thus, it is also possible to create a water discharge state in which the user can recognize the water discharge locus and insert the detected object with respect to various faucet devices. A configuration for the user to recognize the water discharge detection confirmation area 12 will be described later.

  Next, details regarding the water discharge detection determination region 12 will be described. The water discharge detection determination region 12 derives a detection signal 9 based on a reflected wave obtained by reflecting a transmission wave radiated from the radio wave sensor 7 to the detection target, and a predetermined parameter ( For example, the voltage value is set depending on whether or not a value set arbitrarily is satisfied. For example, a range in which the amplitude value of a detection signal in a predetermined frequency band extracted from the detection signal 9 by a filter circuit or the like exceeds a set threshold value is set as the water discharge detection determination region. Further, the propagation distance of the radio wave varies depending on the size and material of the water receiving portion 5, but the propagation distance of these radio waves can be adjusted by the arbitrarily set value to set the optimum range of the water discharge detection determination area 12. Is. For example, in a bathroom vanity installed in a toilet such as a station building, there are many acts of washing hands, so the value set arbitrarily for the necessary water discharge detection confirmation area 12 is adjusted using the body to be detected as a human hand. This makes it possible to ensure an optimal detection range. In the kitchen, cooking utensils (especially metal) and hands are washed. Since metal utensils reflect a large amount of radio waves compared to hands, the water discharge detection confirmation region 12 is determined using the hand as a detected zone. Since it is possible to detect even a metal cooking utensil, it is possible to secure the optimal water discharge detection determination area 12 even in the kitchen. In addition, the water discharge detection confirmation area 12 is a distance that can be operated in a non-contact manner while maintaining a feeling of operation when the user can use it without contact, for example, about 50 to 100 mm. .

  Here, FIG. 2 shows a schematic configuration diagram in which the water discharge detection confirmation region 12 is provided in the vicinity of the side wall 4. FIG. 2A shows the radio wave sensor 7 and the water discharge detection confirmation region 12 in the left-right direction with respect to the spout 2. Unlike the optical sensor, the radio wave sensor 7 determines the detection of an object by transmitting and receiving radio waves by wave propagation, and thus has a wide detection range. Therefore, the water discharge detection confirmation region 12 is also a region having a spread from the radio wave sensor 7 in the same manner. By having this water discharge detection confirmation area 12 in the vicinity of the side wall 4 as in the present invention, it is possible to provide the water discharge detection confirmation area 12 in an area different from the place where the water receiving unit 5 moves especially near the spout 2. Therefore, since it is no longer possible to detect the movement in the vicinity of the spout 2 where the user's movements are frequent, it is possible to prevent erroneous detection for movements other than the detection operation. Further, as described above, the movement toward the vicinity of the side wall 4 and the movement of the object are less than the movement amount in the vicinity of the spout 2. Therefore, it is possible to further reduce false detection. In particular, when water is discharged in a short time from the cooking space adjacent to the sink that is the water receiving unit 5 in the kitchen, conventionally, the hand is moved to the vicinity of the spout in order to react the single lever or sensor to perform water discharge. Although an operation of stretching was necessary, by providing a water discharge detection confirmation region near the side wall of the sink adjacent to the cooking space as in the present invention, a water discharge operation is performed in the middle of a series of operations for discharging water Therefore, it is possible to discharge water while reducing operations such as a user reaching out and changing a standing position.

  In addition, FIG. 2B illustrates a configuration in which the water discharge detection determination region is provided on the surface facing the spout. As the effect of the water discharge detection determination area 12, it is possible to show the same effect as in FIG. 2A described above, but particularly when the human body such as a vanity is used from the direction facing the spout. Since the detected object can be inserted into the water discharge detection determination area without greatly extending the hand, the amount of movement of the user for performing the operation can be reduced. In addition, since it is also possible to insert the body to be detected in the water discharge detection confirmation area while the user is approaching, when the user reaches the vanity, the state in which water discharge can be started on the body to be detected. Therefore, it is possible to reduce the operation of the user wondering where to insert the object to be detected.

Here, it is desirable to provide the water discharge detection determination region 12 in the vicinity of the side wall 4 and in the side wall 4 different from the vicinity of the side wall 4 on the side where the spout 2 is installed. In the vicinity of the side wall 4 where the spout 2 is provided, water is discharged to a portion (for example, an arm on the upper body side from a cuff or a wrist) which is operated immediately after the operation is performed because water is discharged. There is a possibility that it will take. Therefore, by providing the water discharge detection confirmation region 12 in the vicinity of the side wall 4 different from the vicinity of the side wall 4 where the spout 2 is installed, it becomes possible to prevent erroneous water discharge for the user as described above.
Further, when the spout 2 is provided in the vicinity of the side 13 formed by the two adjacent side walls 4, the use as described above is performed when the water discharge detection confirmation region 12 is provided on the two surfaces constituting the side 13. There is a possibility that water will be accidentally discharged to the elderly. When the spout 2 is installed in the vicinity of the side 13, when the water discharge detection confirmation region 12 is provided in addition to the two surfaces constituting the side 13, or when the water discharge detection confirmation region 12 is mounted on the two surfaces constituting the side 13. Therefore, it is possible to reduce erroneous water discharge to the user by providing it in the vicinity of the side 13 facing the side of the side wall 4 constituting the side 13 (see FIG. 3).

In this embodiment, the water receiving portion 5 is described as a multi-face type (rectangular in FIG. 2), and it is easy to recognize the vicinity of the side wall 4 on the side where the spout 2 is installed. About the case where the water-receiving part 5 like description is circular, it shows about the setting of the water discharge detection determination area | region 12. FIG.
In FIG. 4, since the water receiving part 5 is a curved surface, the side wall 4 vicinity which installs the spout 2 is hard to become clear. Therefore, in the present invention, when it is difficult to set the water discharge detection confirmed area 12 due to the shape of the water receiving section 5, the water discharge detection confirmed area 12 is set with the following settings. First, although the spout 2 is installed with respect to the curved water receiving part 5, the generation | occurrence | production condition of the erroneous spout water with respect to the part which a user does not want to receive water discharge by the water discharge operation mentioned above by the form discharged from the spout 2 changes. (If the water discharge form is wide, the possibility of erroneous water discharge occurs in a wide range, and if the water discharge form is narrow, the possibility of erroneous water discharge occurs in a narrow range). Therefore, when the vicinity of the side wall 4 where the spout 2 is installed is unknown due to the shape of the water receiving portion 5, the range of the water discharge trajectory discharged from the spout 2 is set near the side wall 4 where the spout 2 is installed. It is. When the water discharge trajectory is narrower than the width of the spout 2 (the length in the left-right direction in FIG. 4), the range equivalent to the width of the spout 2 is set near the side wall 4 where the spout 2 is installed. Thereby, even when the shape of the water receiving part 5 changes, it becomes possible to set the water discharge detection determination area | region 12. FIG. However, it goes without saying that the water discharge detection confirmation region 12 is less susceptible to the above-described erroneous water discharge by moving away from the water discharge locus.

  In addition, as shown in FIG. 2, the water discharge detection confirmation region 12 is set in the vicinity of the side wall 4 but further in the vicinity of the opening surface of the water receiving portion 5. Thereby, when a user makes a to-be-detected body approach the water discharge detection fixed area | region 12, there exists a merit that it is easy to make a to-be-detected body approach from a user's standing position. Therefore, since it becomes possible to reduce the amount of insertion into the water receiving part 5 of the hand holding the body to be detected and the amount of bending of the wrist, the user can use the faucet device without a physical load. Become. Moreover, since the water discharge detection confirmation area | region 12 is set in the opening surface vicinity of the water receiving part 5, a user performs water discharge by passing an object over the water discharge detection confirmation area | region 12 above an opening surface, or letting it pass. Therefore, it is possible to easily operate in a series of operations for pushing the detected object to the water discharge trajectory, and it is possible to reduce the operation amount for performing the operation.

FIG. 5 shows a schematic configuration diagram in the case where the water discharge detection confirmation region 12 is in the vicinity of the side wall 4 and inside the water receiving unit 5. FIG. 5 is different from FIG. 2 in that the water discharge detection confirmation region 12 is set only inside the water receiver 5. By setting the water discharge detection determination area 12 inside the water receiving part 5, for example, water splashes occur on the counter part provided adjacent to the water receiving part 5, and operations such as wiping off water droplets during cleaning are performed. When performed, it is possible to reduce the entry of the hand into the water discharge detection confirmed region 12 during the wiping operation by setting the water discharge detection confirmed region 12 only inside the water receiving unit 5. In addition, it is possible to reduce false detections for operations other than using the faucet device and for operations above the opening of the water receiving unit 5. As means for providing the water discharge detection confirmed region 12 only inside the water receiving unit 5, a method of providing the water discharge detection confirmed region 12 below the water receiving unit 5 or a radio wave does not propagate above the opening of the water receiving unit 5. There is a method for suppressing propagation of radio waves upward by selecting an antenna of the radio wave sensor 7 or inserting a conductive substance such as metal above the radio wave sensor 7 (on the side of the water receiving portion opening).
Needless to say, the same effect as described above can be obtained for a side wall (a side wall excluding the vicinity of the side wall where the spout is installed) where the water discharge detection determination region 12 is different from the above.

Moreover, the schematic block diagram which shows the relationship between the overflow hole provided in the water-receiving part and the water discharge detection fixed area | region in FIG. 6 is shown.
The overflow hole 18 is a drain outlet for preventing the water from overflowing from the opening of the water receiving unit 5 when the water reaches a certain water level when water is accumulated in the water receiving unit 5. For this reason, when the water discharge detection confirmation area 12 is provided below the overflow hole 18, radio waves are reflected on the accumulated water, and it is erroneously detected that the detected object is detected in the water discharge detection confirmation area 12. There is a possibility that the water will continue to flow. In addition, even when water collected in the water discharge detection confirmation area 12 is not detected, if the water discharge detection confirmation area 12 is below the overflow hole 18, it is necessary to insert the detection target while water has accumulated. For this reason, there is a possibility that the object to be detected and the operating hand may get wet or dirty. Therefore, by providing the water discharge detection determination region 12 above the overflow hole 18, the above-described problems can be solved, and the user's ease of use in the water discharge operation can be improved.

  Here, it demonstrates about the setting with respect to the height direction of the water receiving part in the discharged water detection confirmation area | region 12. FIG. In the water discharge detection confirmation area 12, the water discharge detection is confirmed based on the state of entry, stillness, etc. in the water discharge detection confirmation area 12, but when the water discharge detection confirmation area 12 is set below the water receiving portion, Since the water discharged from the water collides inside the water receiving part 5 and the water droplets and the like accompanying the collision scatter, there is a possibility that the water discharged scatters in the water discharge detection determination area 12 and is erroneously detected. Further, by inserting the detected body into the discharged water, the water splash on the detected body and the water flow scattered from the detected body collide with the inside of the water receiving section, and the water splash accompanying the collision occurs. Also for this water splash, when the water discharge detection confirmation area 12 is set downward, both water splashes enter the water discharge detection confirmation area 12, so the possibility of erroneous detection increases. Therefore, it is desirable to set the water discharge detection determination area 12 to the maximum height that can be set for the configuration of the water receiving unit 5.

Next, a method for notifying the location of the water discharge detection determination area 12 will be described with reference to FIG. Regarding the water discharge detection determination area 12, it is necessary to clarify which place the hand is approached. In view of this, in the water discharge detection confirmation region 12, a notification means 19 for illuminating light using an LED or a light bulb within a predetermined range is provided, and the light is urged to approach the target. However, if the notification means 19 illuminates the entire water discharge detection determination area 12, there is a high possibility that it will be difficult for a place where there is no commercial power source, for example. Therefore, by illuminating at least a part of the water discharge detection confirmed area 12, for example, only the center of the water discharge detection confirmed area 12, and guiding the detected object with the light, the object to be detected is actually within a wide detection range. Therefore, it is possible to supply water without causing erroneous detection. In addition, as to how close it is to the light, it is set to detect at a distance that the user wants to operate in a non-contact manner (for example, about 50 to 70 mm from the inner wall of the water receiving portion) Since it is possible to determine whether or not the water discharge detection determination area 12 has been reached without contacting the inner wall of the water receiving portion 5 by notifying the user by a light lighting method or sound notification. This makes it possible to make the user's approach to the operation unit easier to use.
Note that the notification means 19 of the present embodiment performs lighting control by the control unit 8 and can perform the lighting operation in conjunction with the open / close state of the valve 6. It is also possible to grasp what state is. Further, since the notification means 19 is controlled by the control unit 8, it is possible to notify the maintenance of the faucet device itself, so that not only the display of the water discharge detection confirmation area 12 but also various displays are possible. Is possible.

  Next, what kind of signal is used to perform water discharge control in the water discharge detection determination area 12 will be described. Items detected by the radio wave sensor 7 in the water discharge detection confirmed area 12 include deceleration when the detected object enters from the outside of the water discharge detection confirmed area 12 and notification by the detected object in the water discharge detection confirmed area 12. Standing state on the means 19 (hand holding or the like), contact of the detected object in the water discharge detection confirmation area 12 with the side wall 4, passage by the detected object to the water discharge detection confirmation area 12, wrist in the water discharge detection confirmation area 12 Detects acceleration and the like generated by the snap action.

  First, the deceleration, passing, and snapping operations are detected based on the speed of the detected object detected by the radio wave sensor 7. For the deceleration, for example, the control unit 8 shown in FIG. 8 includes a filter 20 that divides the detection signal 9 into a plurality of frequency bands, and passes a high frequency band from a low frequency band in the divided frequency band. When the detection signal sequentially exceeds a predetermined threshold set in the determination unit 21 provided in the subsequent stage of each filter 20 in time series, the valve drive determination unit 22 determines that the water discharge is detected by determining that the vehicle is decelerating. To do.

  Moreover, it shows about the determination of the passage in the discharged water detection confirmation area | region 12. FIG. Regarding the crossing operation that passes immediately before the radio wave sensor 7, the movement speed is slower (lower frequency) than the actual crossing speed because it moves in a direction substantially perpendicular to the radiation direction of the radio wave of the radio wave sensor 7. Detected. Due to this phenomenon, the detected object is in a substantially stationary state (about 0 Hz) at the moment when the detected object is directly facing the maximum directional direction of the radio wave sensor 7 (see FIG. 9). At this time, since the reflected wave with respect to the radio wave sensor 7 becomes large at the moment when the detected object faces the maximum directivity direction of the radio wave sensor 7, it has a large fluctuation range with respect to the reference value of the detection signal 9. . By using this phenomenon, for example, in the control unit of FIG. 8, after exceeding a predetermined threshold set by the determination unit 21 in a certain predetermined frequency band, a large fluctuation with respect to the reference value in a frequency band near 0 Hz When it has a width (exceeds a predetermined value in a frequency band near 0 Hz), the valve drive determination unit 22 determines that the water discharge detection determination region 12 has passed, and performs the open control on the valve 6.

  Moreover, it shows about the determination of the snap in the water discharge detection determination area | region 12. FIG. The snapping operation on the human body is an operation of snapping only the wrist after the arm is brought close to the vicinity of the water discharge detection determination region 12. A feature of this operation is that the wrist moves in a short time at a speed faster than the movement speed of the arm. When this situation is determined using the control unit 8 shown in FIG. 8, for example, the approach of the arm is detected in a certain predetermined frequency band. Since the amplitude value of the detection signal increases as the arm approaches, the valve drive determination unit 22 determines whether the arm value of the arm exceeds the threshold value set by the determination unit 21 associated with a predetermined frequency band. Judge that there is an approach. Thereafter, when the detection signal classified by the filter 20 in a frequency band higher than the predetermined frequency band exceeds a threshold value set higher than the threshold value set in the predetermined frequency band, the valve drive determination unit 22 It is determined that the snap operation has been performed, and the valve 6 is controlled to be opened.

  Here, after detecting the approach of the arm, when the detection signal of the high frequency band cannot be detected and the detection signal from the filter 20 of the low frequency band is detected, it can be determined that the deceleration operation is being performed. . In the case of snapping, since the wrist is moved, the distance to the radio wave sensor 7 is shortened, so that the reflected wave to the radio wave sensor 7 is increased. Therefore, the determination unit 21 associated with the filter 20 having a frequency body higher than the predetermined frequency band can set a high threshold, and by setting the high threshold, it is possible to prevent erroneous detection of noise. It becomes.

  Next, regarding a stationary state generated by hand-holding or the like, and contact with the side wall 4 having the water discharge detection fixed region, in both cases, it is common that the stationary state is brought about after a certain operation. If it is possible to detect the operation before and after, it is possible to determine the water discharge detection by detecting the deceleration immediately before the stop, but for example, suddenly from outside the water discharge detection determination area 12 one of the water discharge detection determination area 12 When it is pushed out to the section (when it is crossed and a part of the detected body enters the water discharge detection fixed region 12 and stops), it is necessary to detect only the stationary state. Therefore, the detection method in the stationary state is performed using the method used in the above-described crossing detection method. When the filter 20 in the frequency band including 0 Hz has a large variation with respect to the reference value, and the detection signal does not have a large variation with respect to the reference value in the filter 20 of other frequencies, It is determined that the object is stationary in the detection confirmation area 12. As a result, even in a sensor that detects movement using the radio wave sensor 7, it is possible to detect a stationary state by checking the amplitude value of the detection signal in a very low frequency band.

  In the water faucet device of the present invention, since detection is performed using the radio wave sensor 7, it is desirable to use a material having a low relative dielectric constant, such as pottery or resin, for the water receiving part 5. Further, when the water receiving part 5 using a material having a high relative dielectric constant such as metal and difficult to pass radio waves is used, the water receiving part 5 between the water discharge detection fixed region 12 to be set and the radio wave sensor. It is needless to say that a part of the above is made of the material having a low relative dielectric constant by changing to the above-mentioned material having a low relative dielectric constant and has the same detection performance as the water receiving portion.

  In addition, the radio wave sensor 7 of the present invention makes it easy to perform detection via the water receiving unit 5 by using waves with very short wavelengths such as ultrasonic waves, microwaves, and millimeter waves, and maintains detection accuracy. However, it is possible to install the sensor without impairing the appearance.

  As described above, according to the present embodiment, the water discharge detection determination region 12 is installed in the vicinity of the side wall 4, so that the user can detect one of the body to be detected or the human body with respect to the vicinity of the side wall 4 with a small operation amount even in the water receiving unit 5. By intruding the part, it is possible to prevent erroneous water discharge at a timing unexpected by the user by detecting the movement and the object inside the water receiving part 5 which has occurred in the past. Further, since it is possible to spend the time from the water discharge operation until the water discharge is supplied by the movement from the water discharge detection determination area 12 to the water discharge trajectory, water discharge is started before the detected object reaches the water discharge trajectory. Thus, it is possible to easily confirm the insertion location of the detected object. Furthermore, by using the radio wave sensor 7, it is possible to install the sensor and to provide the water discharge detection determination area 12 without impairing the appearance inside the water receiving unit such as providing a black window like an infrared sensor.

Schematic configuration diagram of the faucet device of the present invention (A) Schematic configuration diagram in which the water discharge detection confirmation region is provided in the vicinity of the side wall (in the left and right direction of the spout) (B) Schematic configuration diagram in which the water discharge detection determination region is provided in the vicinity of the side wall (in the direction facing the spout) Schematic configuration diagram of a faucet device installed near the side where the spout is composed of two side walls. Schematic configuration diagram of a faucet device with a curved surface inside Schematic configuration diagram when the water discharge detection confirmation area is in the vicinity of the side wall and inside the water receiving section Schematic configuration diagram showing an overflow hole provided in the water receiving section and a water discharge detection confirmation region Schematic configuration diagram of a faucet device provided with notification means Detailed configuration diagram of control unit Detection signal diagram for crossing the radio wave sensor

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Water outlet, 2 ... Spout, 3 ... Water receiving surface, 4 ... Side wall, 5 ... Water receiving part, 6 ... Valve, 7 ... Radio wave sensor, 8 ... Control part, 9 ... Detection signal, 10 ... Control signal, 11 ... Washing water, 12 ... water discharge detection definitive area, 13 ... side, 14 ... water discharge detection definable area, 15 ... water discharge detection definitive area, 16 ... water discharge locus, 17 ... near the side wall where the spout is installed, 18 ... overflow hole, DESCRIPTION OF SYMBOLS 19 ... Notification means, 20 ... Filter, 21 ... Determination part, 22 ... Valve drive determination part

Claims (5)

A spout having a spout for discharging water;
A water receiving portion having a water receiving surface when receiving water discharged from the water outlet, and a side wall provided around the water receiving surface;
A valve for controlling the water stopping water from the water outlet;
A radio wave sensor that detects the movement of the detected object and outputs a detection signal;
A control unit that controls driving of the valve based on the detection signal;
A faucet device comprising:
The controller is
Based on the detection signal obtained from the movement of the body to be detected in the vicinity of the side wall of the water receiving unit,
A faucet device that opens the valve. The faucet device according to claim 1, wherein the control unit opens the valve based on a detection signal obtained from the movement of the detection object inside the water receiving unit and in the vicinity of the side wall. The said control part opens said valve | bulb based on the detection signal obtained from the motion of the to-be-detected body in the vicinity of a side wall different from the side wall in which the said spout is installed among the said side walls. Item 3. The faucet device according to any one of items 1 and 2. The controller is
Among the side walls, the object to be detected in the vicinity of the side wall between the overflow hole and the opening surface of the water receiving unit provided in the water receiving unit for discharging water when the water receiving unit reaches a certain water level. The faucet device according to any one of claims 1 to 3, wherein the valve is opened based on a detection signal obtained from movement. 5. The notification means according to claim 1, further comprising: a notification unit configured to notify a side wall of the side wall which is to be opened based on a detection signal. 6. Faucet device.

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