JP5212909B2 - Faucet device - Google Patents

Description

  The present invention relates to a faucet device capable of supplying cleaning water at an optimal timing with respect to insertion of a detected object while improving detection accuracy of the detected object.

  Conventionally, in a faucet device, there has been a faucet device that starts water discharge with the insertion of an object to be detected. This faucet device discharges water by detecting that a predetermined distance has been reached from the sensor unit mounted on the faucet device, and generally inserts a detected object near the water outlet. By this, water discharge was started.

Further, the sensor unit detects the presence or absence of an object by, for example, light projection and reception, and a faucet device that determines whether or not the detected object exists at a predetermined distance from the sensor unit (Patent Document 1). In order to improve the detection accuracy, it is confirmed that the detected object has been inserted into the detection range, and when the predetermined threshold is exceeded, the target is detected in a time-series manner such that the presence of the detected object is recognized. There has been a faucet device that determines the presence or absence of a detector.
JP 2007-315041 A

  However, as in Patent Document 1, in a faucet device in which water discharge is started by inserting an object to be cleaned in the vicinity of the spout, the valve enters the detection range at the same time that the hand enters the detection range in the washing operation in the vicinity of the spout. In order to perform the control for opening the water, for example, even when a hand is inserted in the detection range in an operation not intended to discharge water near the faucet device, there is a possibility that water discharge may be started.

  In addition, in the case of a configuration in which the detection object is confirmed in time series for improving detection accuracy, in order to confirm again after confirming the detection object, collection of detection signals for reconfirmation, In order to separately provide control such as analysis of collected signals, there is a possibility that an operation such as waiting for the user to start water discharge may occur unlike the timing when the user wants to discharge water. there were.

  Therefore, in the present invention, there is provided a faucet device capable of reliably detecting only the act of using the faucet device by the user and supplying water discharged from the faucet device at a timing when the user desires. .

In order to achieve the object, a water outlet, a sensor unit that acquires information on the movement of the detected object by the reflected wave of the radiated radio wave, and whether or not water is supplied to the water outlet based on a detection signal from the sensor unit A faucet device comprising: a control unit that performs open / close control of a valve that switches between, wherein the control unit includes a memory unit that stores the detection signal, and the detection signal obtained from the sensor unit is a predetermined value. When a first determination is made to determine that the first state has been reached, it is determined that a detection signal that is a predetermined time before the first determination stored in the memory unit has reached a predetermined second state The second determination is further performed, and when the second determination is performed , valve opening / closing control is performed based on the state of the detection signal after a predetermined time from the first determination stored in the memory unit. A faucet device can be provided.

  According to the present invention, the detection accuracy is improved by determining the state of the detected object from the previous signal that the detection signal satisfies the predetermined value and determining whether the operation is for using the water faucet device. It improves and it becomes possible to supply the water discharge according to a user's intention. In addition, since the detection signal is a previously acquired detection signal by using a previous signal that satisfies a predetermined value, it can be used to reduce the time it takes to finish collecting necessary signals from the detection signal. It becomes possible to supply water discharge at the optimal timing desired by the person.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a schematic configuration diagram relating to the faucet device of the present invention. FIG. 1 shows a spout 1, a sensor unit 5 that acquires information related to the movement of an object to be detected by a reflected wave of a radiated radio wave, and water supply to the spout 1 based on a detection signal from the sensor unit 5. And a control unit 4 that performs opening / closing control of the valve 3 that switches between presence and absence. FIG. 2 shows a schematic configuration diagram of an example of the control unit 4 mounted in the faucet device of the present invention. The control unit 4 includes a memory unit 9 that stores a detection signal from the sensor unit 5 and a determination unit 8 that determines a state of the detection signal and transmits an opening / closing signal to the valve 3. Yes. In the present invention, FIG. 2A shows a configuration of the control unit 4 in which the memory unit 9 is mounted inside the determination unit 8. The determination unit 8 is configured to use a memory mounted therein as the memory unit 9 when the signal processing unit such as a microcomputer and a member that can transmit a signal to an external device are used. With this configuration, it is possible to implement the configuration of the control unit of the present invention without separately mounting a memory unit in the control unit 4, and it is possible to reduce the size. FIG. 2B shows the configuration of the control unit 4 in which the memory unit 9 is connected to the outside of the determination unit 8. The detection signal from the sensor unit 5 is once input to the determination unit 8 and the detection signal is transmitted to the memory unit 9 inside the determination unit. With this configuration, for example, when a long-time detection signal is stored in the memory unit 9, a large-capacity detection signal that cannot be stored with the memory mounted in the determination unit 8 can be easily stored. Thus, the state of the detected object can be identified with higher accuracy. In FIG. 2C, the signal processing unit 10 that processes the detection signal from the sensor unit 5 is provided, and the determination unit 8 including the memory unit 9 is provided in the subsequent stage of the signal processing unit. Yes. With such a configuration, for example, when control is performed such that the detection signals are classified in various frequency bands and the characteristics of the detection signals in each frequency band are observed, the load of signal processing in the determination unit 8 can be reduced. Therefore, the determination speed of whether or not to send an open / close signal to be transmitted from the determination unit to the valve 3 is also improved, so that the valve 3 can be quickly opened and closed with respect to the detected timing. In FIG. 2D, a configuration is described in which a determination unit having a memory unit 9 mounted separately after the signal processing unit 10 is connected. With this configuration, in the signal processing unit 10, the amount of signals that cannot be processed by the memory unit 9 inside the determination unit 8, such as a large-capacity detection signal generated by operations such as classifying the detection signal into various signals Therefore, it is possible to store various information indicating the state of the detected object and use it to determine whether the valve 3 is opened or closed, so that the detection accuracy can be further improved. The detection signal accumulation method in the memory unit 9 of the present invention includes, for example, a method of updating the detection signal as needed in time series, but the detection signal before and after the first and second determinations is reliably stored in the memory unit 9. If it is a method that can be accumulated, the same effect can be obtained.

  Next, in the faucet device of the present invention, when the detection range of the sensor unit 5 is different, opening / closing control of the valve 3 in the control unit 4 will be described with reference to the drawings. FIG. 3 shows the configuration of the faucet device provided with a detection range in which the detection target is detected near the water discharge port 1 to determine the opening operation of the valve 3. In the faucet device of the present embodiment, the valve 3 is opened by the presence of the detected object in the vicinity of the water outlet 1. However, if only the object to be detected is detected in the vicinity of the spout 1, a hand is accidentally inserted into the detection range when work is performed in the vicinity of the faucet device. There was a possibility to do. Therefore, in the faucet device in the present embodiment, when the detected object is inserted into the detection range for performing the determination to open the valve 3, how the detected object is based on the previous detection signal. It is set as the structure which determines whether it was inserted in the detection range and discharges water. In addition, in the water faucet device of the present invention, it is configured to radiate radio waves from the direction facing the spout 1 and transmit the radio waves in the vicinity of the spout 1, but the sensor unit 5 is installed in another place, A similar effect can be obtained as long as radio waves can be emitted to the vicinity of the spout 1. Further, for example, when the first determination is made to determine that the detected object has entered the vicinity of the spout 1, the detected object that moves to the vicinity of the spout 1, which is the state of the detected object before the first determination. When collecting information, a configuration that radiates radio waves approximately parallel to the insertion trajectory of the hand not only facilitates the collection of information for the first determination, but also detects the detection signal before the first determination. It becomes possible to detect with higher accuracy.

A flow relating to identification of the detection signal in the control unit 4 and the opening / closing control of the valve 3 in the configuration of FIG. 3 will be described using the detection signal when detecting the detection target shown in FIG. FIG. 4 shows a detection signal when the detected body approaches the direction of the spout 1 and the detected body becomes substantially stationary in the vicinity of the spout. Here, FIG. 4 shows time on the horizontal axis and voltage values on the vertical axis.
In the present embodiment, the first determination in the control unit 4 is based on the determination criterion that the detected object has approached the vicinity of the water outlet 1, and the voltage value is used to determine whether or not the vicinity of the water outlet has been approached. Judgment is performed. Since the sensor unit 5 uses a radio wave, when the detected signal is detected based on a certain reference value, a detection signal whose frequency varies depending on the speed of movement of the detected object and the direction of entry is output. is there. Therefore, in order to determine that the vicinity of the spout 1 has been approached, voltage thresholds are provided on the high side and the low side with respect to the reference value, and this threshold is exceeded in the direction in which the detection signal is away from the reference value. In this case, it is determined that the detected object has approached the vicinity of the spout 1. As a method of not having the threshold value on both sides with respect to the reference value, it is possible to provide the threshold value only on the side higher than the reference value by full-wave rectifying the detection signal. Furthermore, when determining that the detection signal exceeds the threshold, there is a method in which it is not determined that the detection target has approached the spout 1 if the detection signal does not exceed the threshold for at least a predetermined time. By this method, it is possible to suppress the first determination from being instantaneously generated in the detection signal even though the detection target is not approaching.

  Here, since the detection object has approached the vicinity of the spout 1, the detection signal has exceeded the threshold and further has exceeded the threshold for a predetermined time. It is determined that the vicinity has been approached, and the first determination is performed. When the control unit 4 performs the first determination, the control unit 4 extracts the detection signal before the first determination from the memory unit 9. In the present embodiment, the setting is made so that the detection signal is extracted for a certain period from the time when the detection signal exceeds the threshold before the first determination. The control unit 4 analyzes the previous detection signal pulled out, determines whether to open the valve 3 based on the result, and transmits an open / close signal to the valve 3. In FIG. 4, it can be confirmed that the amplitude value gradually increases at a certain frequency. This is presumed that the detected object is approaching substantially parallel to the traveling direction of the radio wave radiated from the sensor unit 5. Thereby, it can be determined that the detected object has approached the vicinity of the spout 1 in order to use the faucet device. By using the detection signal before the first determination, it is possible to grasp the process until the vicinity of the spout 1 is approached if the first determination is a determination for the presence of the detected object in the vicinity of the spout, Since it is possible to determine whether or not to use the faucet device, it is possible to prevent erroneous detection of an object or operation that does not use the faucet device. Furthermore, by using already collected detection signals that are signals before the first determination, there is no need to separately collect detection signals after the first determination, so the time from detection to water discharge is shortened. Thus, it becomes possible to discharge water at a timing when the detected object wants to use the faucet device.

  In addition, in the present Example, although the detection signal before 1st determination described about the movement approaching the spout 1 vicinity, the movement other than that also changed the frequency value of a detection signal, or the change of the amplitude value of a detection signal. It is possible to guess from. As in the present embodiment, there is a case where the tendency can be grasped without performing any signal processing on the detection signal, but as other methods, for example, a predetermined signal processing unit 10 provided in the control unit 4 can be used. There is also a method of accumulating detection signals in the frequency band in the memory unit 9 and identifying the motion of the non-detection body before the first determination using the accumulated detection signals. Specifically, for example, by providing a filter of a very low frequency band (0 to 10 Hz) in the signal processing unit 10, the detected object approaches the vicinity of the water outlet 1 and decelerates in the vicinity of the water outlet, It is possible to determine that the object to be detected is being stopped because the object to be detected is presented in the vicinity of the spout 1, and it is possible to identify the movement as passing through the vicinity of the spout 1. In this way, it is possible to reliably identify the detected object using the faucet device by collecting the signals before the first determination and using the collected detection signals. It becomes.

  Next, unlike FIG. 3, a flow until the opening and closing of the valve 3 in the faucet device in the case where the detection range of the sensor unit 5 is provided in the vicinity of the wall surface of the water receiving unit 11 that receives water discharged from the water outlet 1 is shown. FIG. 5 shows a schematic configuration diagram of a faucet device having a detection range for starting water discharge near the wall surface of the water receiving section 11. In the faucet device of the present embodiment, water discharge is started by causing the detected body to enter a detection range provided in the vicinity of the wall surface of the water receiving portion 11. Such a faucet device can reduce false detection when various operations and detection objects are mixed in the vicinity of the spout 1, for example, like a faucet device provided in a kitchen. In addition, there are various operations inside the sink, and there is an environment where cooking utensils and the like are present in the vicinity of the spout 1. Although the sensor unit 5 is installed on the side wall surface of the water receiving unit 11 in FIG. 5, the same effect can be obtained as long as it can be determined that the user has intentionally operated. Become. For example, when work is performed in the vicinity of the faucet device or inside the water receiving unit 11 such as the wall surface of the sink wall facing the water discharge port 1 or the upper surface of the water receiving unit 11 connected to the side surface of the water receiving unit 11. It is desirable to install it in a place where it is unlikely to be operated accidentally.

  This will be described in detail with reference to FIG. 6, which is a detection signal diagram obtained for the opening / closing control of the valve 3 in FIG. FIG. 6 is a detection signal diagram when the object to be detected is brought close to the water discharge detection range formed by the sensor unit 5 and then moved with respect to the trajectory of water discharged from the water discharge port 1 and the water discharge port 1. is there. In the present embodiment, the first determination is performed based on the amplitude value of the detection signal due to the approach to the vicinity of the sensor unit 5. Similar to the detection signal of FIG. 4, in the first determination, in order to prevent erroneous detection due to noise, the first determination is established by determining a state in which the threshold is exceeded for a predetermined time. Here, since the first determination is to determine that the sensor unit 5 has been approached, the detection signal before the first determination indicates the approach of the detected object to the vicinity of the sensor unit 5, and in FIG. Since the amplitude value of the detection signal increases in time series, it can be confirmed that the detected object is surely approached to the sensor unit 5. Therefore, the control unit 4 can instruct the valve 3 to open and start water discharge. In the water faucet device of FIG. 3, the water discharge is controlled based on the presence or absence of the detected object near the water discharge port 1 and the approaching detection signal. In this embodiment, the water receiving unit in which the sensor unit 5 is installed. 11 Water discharge is controlled based on the presence or absence of a detection object in the vicinity of the wall surface and a detection signal approaching, and even if the installation location of the sensor unit 5 or the location where the presence or absence of the detection object is determined is changed Since it is possible to determine whether or not the operation is for discharging water, it is possible to reduce erroneous detection for various movements that do not use the faucet device. Further, in the case of the configuration in which the presence or absence or the state of the detected body is identified at a location away from the water outlet 1 as in this embodiment, the detected body is on the trajectory of water discharged from the water outlet 1 or the water outlet. Since it becomes possible to start water discharge before reaching the vicinity, it becomes possible for the user to clarify the target for inserting the object to be detected. Can be used.

  In the configuration of FIG. 5, other means for opening / closing control of the valve 3 will be described. In FIG. 6, the first determination for determining the presence or absence of the detection object in the vicinity of the sensor unit 5 is performed, and the state of the detection object with respect to the sensor unit 5 before the first determination is determined. The determination for determining that the body has approached the sensor unit 5 is the second determination. When the second determination for determining the approach to the sensor unit 5 is performed, in the faucet device of the present invention, when the second determination is performed, the valve 3 is opened and closed using a detection signal after a predetermined time from the first determination. The operation is determined. The determination of the opening / closing operation of the valve 3 using the detection signal after the first determination after the second determination is performed, for example, in the faucet device of FIG. This is because the body is left inside the water receiving unit 11 or is used when the body to be detected is moved outside the water receiving unit 11. Specifically, for example, in a kitchen, when a pan is placed inside the sink that is the water receiving unit 11 and the pan is shifted to the vicinity of the side wall where the sensor is installed, the detected object approaches the sensor, Furthermore, since it exists in the vicinity of the sensor, there is a high possibility of causing erroneous water discharge in operations such as shifting the pan in the opening / closing control only for the first determination. Therefore, as in the present embodiment, the detection accuracy is further improved by using a method for further identifying what operation the detected object has performed from the detection signal after the first determination after the second determination. It is a configuration.

  The opening / closing control of the valve 3 using the second determination will be described with reference to FIG. As described above, after the first determination that determines that the detected object exists in the vicinity of the sensor, the detected object approaches the sensor unit 5 using the detection signal before the first determination. Judging that If the approach to the sensor unit 5 can be determined, the second determination is performed. After the second determination, the state after the water discharge operation is determined based on the detection signal after the first determination. Analysis is performed using the movement of the detected object. For example, as shown in FIG. 6, when it is confirmed that a large detection signal can be detected in a very low frequency band and the amplitude value of the detection signal tends to decrease in a certain frequency band thereafter, A location where a large detection signal amplitude value can be obtained at a low frequency can be determined that the detected object is substantially stationary in the vicinity of the sensor unit 5, which is detected in the vicinity of the sensor unit 5. Can be determined to be in a state of being held over the sensor unit. Further, the movement of the detection signal is reduced at a certain frequency, but this is a movement away from the sensor unit 5 and is moving toward the water outlet 1 and the vicinity of the water discharge locus. I can judge. As a result, it is possible to distinguish from the operation of leaving the pan after shifting the pan shown earlier, and it is possible to determine whether the faucet device is going to be used after performing the water discharge operation. The detection accuracy in the water discharge operation can be further improved. However, since there is a time for further identifying the detection signal after the second determination, water having a detection range in a place away from the water outlet or the water discharge trajectory is not provided near the water outlet 1 as in this embodiment. Most suitable for stopper device.

  After the second determination, a method using the detection signal after the first determination is performed. However, it is desirable that the detection signal is accumulated in the memory unit 9 for the detection signal after the first determination. After the first determination is completed, the second determination is performed using the detection signal before the first determination. However, since the detection signal is output from the sensor unit 5 in time series, the second determination ends. In order to detect the detection signals up to the above without omission, it is desirable to use the memory unit 9. Note that the detection signals after the first determination used after the second determination can be used as they are, as with the detection signals before the first determination. In order to confirm, the detection signal is accumulated in the memory unit 9 via the signal processing unit 10, thereby reducing the load of signal processing in the determination unit 8, and determining the state of the detected object based on a more strict detection signal. It becomes possible.

  In addition, since the sensor part 5 in FIG. 5 can detect by radiating | emitting an electromagnetic wave with respect to the water receiving part 11 wall surface, it can be concealed. Thereby, since the sensor unit 5 can be installed without being exposed to the water receiving unit 11 where the water discharge is scattered, the sensor unit 5 can be installed without taking a waterproof structure. However, since it is impossible for the user to visually check, it is necessary for the user to perform a water discharge operation on the sensor unit 5 as a mark. Therefore, it is desirable to install a marker indicating that the sensor unit is installed in the vicinity of the wall surface of the water receiving unit 11 where the sensor unit 5 is installed. Examples of the marker include a method of printing with a color tone different from that of the water receiving unit 11 and a method of notifying the user using an illumination device such as an LED. Further, since the detected object is inserted into the marker, a large detection signal can be obtained by guiding a large area portion of the detected object on the locus of the radio wave radiated from the sensor unit 5. Therefore, by considering the arrangement of the marker and the sensor unit 5, a larger detection signal can be acquired, and the detection accuracy can be improved. For example, when the object to be detected is a palm, the user can easily hold the palm by placing a marker equivalent to the palm. Therefore, the palm that occupies a large area of the hand is easily guided to the vicinity of the sensor unit 5. It is also possible to do. In this case, it is desirable to install the marker in the vicinity of the wall surface on which the sensor unit 5 is installed.

  Furthermore, as another method, as shown in FIG. 7, there is a configuration in which a sensor unit 5 is provided so as to face the water outlet 1. In the case of this configuration, the operation of performing the first determination by the sensor unit 5 is detected in the vicinity of the wall of the water receiving unit 11 where the detected object exists near the water outlet 1 or the sensor unit 5 is installed. It is possible to determine both of whether a body exists. In that case, how the faucet device of the present invention is used, such as a faucet device installed in a wash basin of a public facility, etc. In this case, it is possible to discharge water more quickly by using the presence / absence of the detected object in the vicinity of the water discharge port 1 for the first determination, and various movements in the water receiving unit 11 can be performed as in the kitchen. In the faucet device to be performed, the presence or absence of the detected object near the wall surface of the water receiving unit 11 is set as the first determination, so that erroneous detection due to various operations in the water receiving unit 11 can be reduced and water can be discharged. It becomes possible.

  Here, the detection signals before and after the first determination used for determining the opening / closing control of the valve 3 will be described in detail. In the case of a radio wave sensor, the operation of the detected object with respect to the sensor unit 5 is not only the presence / absence and distance of a light sensor, but also the movement of the detected object can be identified. Various movements can be analyzed and can be distinguished into several patterns. First, an “approach operation” approaching substantially parallel to the radiation direction of the radio wave from the sensor unit 5, a “separation operation” approaching substantially parallel to the radiation direction of the radio wave, and a radiation direction of the sensor radio wave The above four operations are roughly divided into a “crossing operation” that moves in a direction substantially orthogonal to the above, and a “stationary operation” that is substantially stationary in the vicinity of the sensor unit. As for the “approaching operation” and the “separating operation”, as can be seen from the detection signal diagrams of FIGS. 4 and 6, the detection signal in which the amplitude value of the detection signal increases in time series at a certain frequency in the “approaching operation”. It will be. Although the frequency changes due to the moving speed of the detection target, the most characteristic movement is that the amplitude value of the detection signal increases in time series. This makes it possible to determine the speed at which the detection target is approaching the sensor unit 5 and the approximate distance. The “separate operation” is a movement in which the amplitude value of the detection signal decreases in time series, contrary to the detection signal. The frequency variation changes due to the speed of the object to be detected, as in the “approaching operation”, but the speed and approximate distance of the object to be detected are grasped by the time-series decrease in the amplitude value. It becomes possible.

  Next, the “crossing operation” that is a feature of the sensor unit 5 using radio waves will be described. When the radio wave sensor moves in a direction substantially perpendicular to the transmission direction of the radio wave, it can detect a Doppler signal whose frequency of the detection signal varies depending on the speed. In the substantially orthogonal direction, the detection signal corresponding to the speed of the detection object cannot be identified because the movement moves across the radio wave, and the detection is in the direction substantially orthogonal to the transmission direction of the radio wave radiated from the sensor unit 5. The movement of the body can be detected without speed, and a detection signal capable of detecting a certain speed component can be output in a place where there is a radio wave having the same vector as the movement of the detected object due to the spread of the radio wave. Therefore, when the detected object moves in a direction substantially orthogonal to the transmission direction of the radio wave radiated from the sensor unit 5, it has a certain speed component in a place far from the sensor unit 5, and the amplitude value of the detection signal When a small signal is output and moves in the direction facing the radio wave sensor, it does not have a speed component and can output a large detection signal, and then passes through the sensor unit 5 and moves to a place far from the sensor unit. It is possible to output a detection signal having a small amplitude value. Due to the characteristics of the detection signal, when the sensor unit 5 is installed on the wall surface of the water receiving unit 11, for example, when the sensor unit 5 is installed on the wall surface of the water receiving unit 11, the position immediately before the sensor unit 5 is set. It is possible to detect passing.

  Furthermore, “static operation” will be described. In the sensor unit 5 that transmits and receives radio waves, it is difficult to detect a stationary object. However, if the user operates the sensor unit 5 while holding the detection target, a detection signal can be derived at a very low frequency like fluctuation even if the user intends to stand still. At this time, since it is possible to derive the amplitude value of the detection signal according to the distance from the sensor unit 5 at a very low frequency (about 0 to 10 Hz) as the detection signal, it is possible to detect a substantially stationary state, It is possible to identify at what distance the detected object exists.

  With the above operation pattern, the detection signals in FIGS. 4 and 6 can be patterned. For example, as shown in FIG. 4, the detection signal before the first determination can be identified as “approaching operation”, and the operation after the first determination is very low in frequency and the detection signal is large. It can be determined that the “stationary operation” is performed in the vicinity of the unit 5. Further, as shown in FIG. 6, the movement before the first determination can be determined as an “approaching operation” due to the time-series increase in the amplitude value, and a large detection signal is output in a very low frequency band after the first determination. As for the portion, the detected object is in a substantially stationary state in the vicinity of the sensor unit 5, and the amplitude value of the detection signal is reduced in time series in the subsequent detection signals. Regarding the operation, it is possible to determine that the operation is a “separate operation”. In this way, by patterning the movement according to the characteristics of the detection signal, it is possible to identify the operation from the detection signal in the control unit 4 without performing complicated signal processing, etc., so the signal processing time in the control unit 4 is shortened. It is possible to perform the water discharge supply timing earlier.

  As described above, in the faucet device of the present invention, when performing the opening / closing control of the valve 3 in the control unit 4, the state of the detected object is detected from the detection signal before or after the first determination, By determining whether or not to use the faucet device from the information on the detected object, it is possible to further improve the detection accuracy for sensing the detected object. Moreover, when using the detection signal before 1st determination, since the time which collects the detection signal after 1st determination can be shortened, in addition to the improvement in detection accuracy, it is possible to perform the timing of water discharge earlier. It becomes possible, and it becomes possible to supply water discharge at the timing which a user desires. Furthermore, even when the water discharge detection range is set not at the vicinity of the water discharge port 1 but at a location away from the water discharge port, the water discharge timing can be maintained quickly and the detection accuracy can be improved. In order to improve the detection, it is also possible to confirm whether or not to move the detection object with respect to the water outlet 1 and the water discharge trajectory from the sensor unit 5 by providing the second determination. The accuracy can be further increased.

Schematic configuration diagram of a faucet device in the present invention Configuration diagram of control unit In the water faucet device of the present invention, a configuration diagram in the case where the first determination is made on the state of the detected object near the water outlet. Detecting signal diagram from the sensor unit in the faucet device in FIG. In the faucet device of the present invention, a configuration diagram in the case where the first determination is made on the state of the body to be detected near the wall surface of the water receiving section FIG. 5 shows a detection signal from the sensor unit in the faucet device in FIG. Schematic configuration diagram when the sensor unit in the faucet device of the present invention is installed in another place

Explanation of symbols

1: water outlet, 2: spout, 3: valve, 4: control unit, 5: sensor unit, 6: water supply pipe, 7: signal line, 8: determination unit, 9: memory unit, 10: signal processing unit, 11 : Receiving part, 12: First judgment

Claims (1)

The spout,
A sensor unit that obtains information on the movement of the detected object by the reflected wave of the radiated radio wave;
A faucet device comprising: a control unit that performs open / close control of a valve that switches presence / absence of water supply to a water discharge port based on a detection signal from the sensor unit,
The controller is
A memory unit that stores the detection signal, and stored in the memory unit when a first determination is made to determine that the detection signal obtained from the sensor unit is in a predetermined first state; The second determination for determining that the detection signal a predetermined time before the first determination is in the predetermined second state is further performed, and when the second determination is performed, the memory stored in the memory unit is stored. A faucet device that performs valve opening / closing control based on a state of a detection signal after a predetermined time from the first determination .

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