JP6689490B2 - Water discharge device and toilet device - Google Patents

Description

  The present invention relates to a water discharge device and a toilet device that emit and receive radio waves to detect an object to be detected and control water discharge.

  A public toilet or the like may be provided with a plurality of water discharge devices such as a urinal and an automatic faucet, each of which has a detection unit that emits and receives radio waves to and from a water discharge device to detect an object to be detected. In such a case, if the water discharger is provided with a detection unit for detecting a human body or the like, the detection units of the water dischargers may interfere with each other to cause erroneous detection.

  Therefore, in order to suppress radio wave interference, Patent Document 1 discloses a random number generating unit that generates a random number in a microwave sensor including a detection operation control unit that intermittently performs an object detection operation in a detection cycle. And a time setting changing unit that randomly changes the time setting of the detection cycle based on the random number.

JP, 2005-265615, A

  However, in the configuration described in Patent Document 1, when the number of times of radio wave projection, which is an object detection operation, is counted by dividing the time into certain constant intervals, a dense projection interval and a sparse projection interval are formed. As a result, the detection accuracy of the detection unit may become unstable over time.

  Therefore, the present invention has been made to solve the above-described problems, and in suppressing radio wave interference, a water discharge device and a toilet that can prevent the detection accuracy of the detection unit from destabilizing with time. One of the purposes is to provide a device.

A water discharger according to a first aspect of the present invention includes a water discharger that discharges water, a detector that emits and receives radio waves to detect an object to be detected, and a detector that discharges water based on the detection result of the detector. A water discharge processing unit that controls the water discharge, a random number generation unit that generates a random number, and for each predetermined cycle, a variable period that is shorter than the predetermined cycle is determined based on the random number to determine the variable period. And a start processing unit for performing a process of causing the detection unit to start projecting light for a certain period of time after waiting , the start processing unit is configured to detect when the detection target of the detection target is started by the detection unit. Performs light projection and reception by the detection unit a plurality of times, the water discharge processing unit performs the control process after confirming the detection of the detection target when the detection of the detection target continues a plurality of times, The start processing unit further includes the predetermined A first start processing unit that performs a process of immediately starting light emission to the detection unit for each cycle, and for the detection unit after waiting for the variable period at each of the predetermined cycles. A second start processing unit for performing processing for starting light emission, and when detection of the detection target by the detection unit starts, until the detection determination of the detection target based on the detection is confirmed. A selection processing unit that selects execution of the second start processing unit and, in other cases, selects and executes at least once the execution of the first start processing unit is further included . The "radio wave" and the "projected light" include light other than visible light, and also include microwaves and infrared rays.

According to this configuration, the start processing unit determines the variable period based on the random number generated by the random number generating unit, waits for the variable period, and then starts light emission to the detection unit. Even if another water spouting device having the same configuration as the water spouting device is provided near the water spouting device according to the first aspect, the water spouting device waits until the light is projected, compared to a case where the water spouting device waits for a certain period until the start of light projection. The variable period to be performed can be made different depending on the random number, and thus the timing of starting light emission can be made different. As a result, radio wave interference between the water discharge devices can be suppressed.
Further, according to the configuration of the first aspect, the process of the start processing unit is performed in each predetermined cycle, and the variable period is set to be shorter than the predetermined cycle. Therefore, the variable processing is performed at least once in each cycle. Light will come into play. Therefore, it is possible to prevent a sparse cycle in which no detection is performed in a certain cycle and a dense interval in which detection is performed once or more. As a result, in the configuration of the first aspect, in suppressing radio wave interference, it is possible to prevent the detection accuracy of the detection unit from becoming unstable with respect to time.
Further, when the detection unit starts detecting the detection target, it is highly likely that it is an erroneous detection due to radio interference. As a result, it is possible to prevent the control process from being determined and determined by erroneous detection.
In addition, since the water discharge processing unit determines the detection of the detection target when the detection of the detection target continues, the probability of affecting the determination result increases after the detection starts, so the detection is not started. Compared with, the need to suppress radio wave interference increases. Therefore, in order to suppress radio wave interference, the selection processing unit selects execution of the second start processing unit that waits for a variable period before light emission when detection of the detection target by the detection unit starts. . However, this standby process consumes power as compared with the case where no standby is performed. Therefore, in other cases other than the start of the detection with less need to suppress the radio wave interference, the selection processing unit performs the selection process of the execution of the first start processing unit at least once, thereby increasing the power consumption. Suppress doing.

  In the water discharge device according to the second aspect of the present invention, in the first aspect, the detection unit communicates with the sensor that emits and receives radio waves, obtains a light reception result of the sensor by communicating with the sensor, and receives the light. A detection processing unit that detects the detection target based on a result, and the predetermined cycle is the communication cycle.

  According to this configuration, since light emission and reception are performed at least once every communication cycle, it is possible to suppress the occurrence of useless communication processing.

In the water spouting apparatus according to the third aspect of the present invention, in the first or second aspect, the water spouting processing unit, when the detection of the detection target by the detection unit is started, according to the setting condition, In the case where at least one of the first cleaning process and the second cleaning process in which the detection confirmation time is longer than that of the first cleaning process is executed, and the water discharge processing unit executes the first cleaning process . The predetermined cycle until the detection of the detection target by the detection unit starts and is determined is made shorter than that in the case where the second cleaning process is performed.

  In this configuration, if the time until the detection confirmation of the second cleaning process is longer than that of the first cleaning process, the number of detections performed before the determination of the detection, which is the starting point for the first cleaning process to perform the control process of the water discharge part, is increased. , The second cleaning process is less than the number of detections performed until the detection that is the starting point for performing the control process of the water discharge part is performed, and the first cleaning process is performed more when the second cleaning process is performed. In comparison, the probability of false detection due to radio wave interference may be high. Therefore, when the first cleaning process is executed, for example, by shortening the cycle as the time becomes shorter, it is possible to increase the number of times of detection until confirmation and prevent the probability of false detection from increasing.

In the water discharge device according to the fourth aspect of the present invention, in any one of the first or third aspects, the random number generation unit generates the random number based on a unique value of the water discharge device.

  According to this configuration, even if a plurality of water discharge devices generate random numbers with the same algorithm, it is possible to suppress the generation of the same random numbers, and thus suppress false detection due to radio wave interference.

A toilet device according to a fifth aspect of the present invention is a toilet device including a toilet bowl and the water discharge device according to the third aspect, wherein the first cleaning process is pre-cleaning of the toilet bowl, and The second cleaning process is a main cleaning of the toilet bowl having a larger cleaning amount than the pre-cleaning process, and when the water discharge processing unit performs the second cleaning process subsequently after performing the first cleaning process, The determined cycle was set longer than when the first cleaning process was performed.

  According to this configuration, when the second cleaning process is executed, the predetermined cycle is made longer than when the first cleaning process is executed, so that power consumption can be suppressed.

  According to the water discharge device and the toilet device of the present invention, in suppressing radio wave interference, it is possible to prevent the detection accuracy of the detection unit from destabilizing with time.

It is sectional drawing which shows the urinal apparatus provided with the water discharge apparatus which concerns on 1st embodiment of this invention. It is a schematic functional block diagram of the water supply unit shown in FIG. It is a flow chart of random floodlight processing by each functional part of a water supply unit. It is a figure which shows the time chart of the process of each functional part of a water supply unit. It is a flow chart of detection / water discharge processing by each functional part of a water supply unit as a water discharge device concerning a second embodiment of the present invention. It is a schematic functional block diagram of the water supply unit as a water discharge apparatus which concerns on 3rd embodiment of this invention. It is a flow chart of detection / water discharge processing by each functional part of a water supply unit as a water discharge device concerning a third embodiment of the present invention, and is a flow chart which described processing of a selection processing part especially. It is a figure which shows the time chart of a process of each functional part of the water supply unit which concerns on 3rd embodiment of this invention. It is a figure which shows the flowchart which changes a communication period in the water discharge apparatus which concerns on 4th embodiment. It is a figure which shows the time chart of a process of each functional part of the water discharge apparatus which concerns on 4th embodiment.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. In order to facilitate understanding, the same components in the drawings will be denoted by the same reference symbols as much as possible, without redundant description.

<First embodiment>
A toilet device including a water discharge device according to the first embodiment of the present invention, in particular, a urinal device will be described with reference to FIG. FIG. 1 is a cross-sectional view showing a urinal device US including a water discharge device according to the first embodiment of the present invention.

  As shown in FIG. 1, the urinal device US includes a water supply unit 10 as a water discharge device, a urinal body 20, water supply pipes 30 and 31 (water supply means), a spreader 35, and a trap portion TP. ing. The water supply unit 10 and the urinal body 20 are attached to the wall surface WL of the building frame.

  The water supply unit 10 includes a control device 12, a solenoid valve 14, and a sensor 16.

  The control device 12 includes a central processing unit, a memory, a control program, and the like. Based on the detection result of the sensor 16, the control device 12 outputs a control signal for opening or closing the solenoid valve 14 to a predetermined opening degree at a predetermined timing so as to wash the urine of the user.

The solenoid valve 14 is provided between the water supply pipe 40 on the building side and the water supply pipe 30. When the electromagnetic valve 14 is closed, the water supplied from the water supply pipe 40 on the building side is stopped so as not to flow into the water supply pipe 30. When the solenoid valve 14 is opened, the water supplied from the water supply pipe 40 on the building side has an instantaneous flow rate according to the opening degree of the solenoid valve 14 (instantaneous flow rate (m ³ when passing through a pipeline near the solenoid valve 14 / S)) to the water supply pipe 30.

  The sensor 16 is a sensor that emits and receives a radio wave under the control of the control device 12 and outputs the light reception result to the control device 12. The sensor 16 is, for example, a human body detection sensor for detecting that a user who uses the urinal device US stands in front of the urinal body 20. As the sensor 16, a sensor such as an infrared sensor or a microwave sensor is appropriately used. The sensor 16 outputs the detection result of the user to the control device 12. Further, the light emitting / receiving surface of the sensor 16 faces the front of the urinal device US in order to detect the human body.

  The urinal body 20 includes a bowl portion 201. The bowl portion 201 is a portion that receives the urine flow from the user of the urinal body 20. A bowl wall surface 202 is formed on the inner surface of the bowl portion 201, and the bowl wall surface 202 includes a bowl back wall surface 202a and a bowl bottom surface 202b. The urine flow discharged from the user mainly hits the bowl back wall surface 202a and flows downward. The urine flow that has flowed downward flows from the drain port 203 that is open on the bowl back wall surface 202a side of the bowl bottom surface 202b to the trap portion TP. The drainage plate 203 is arranged at the drain port 203.

  The spreader 35 is attached to the upper part of the bowl back wall surface 202a. A water supply pipe 31 is connected to the spreader 35, and is configured to discharge the cleaning water supplied from the water supply pipe 31. The cleaning water discharged by the spreader 35 spreads in the width direction (direction penetrating the paper surface of FIG. 1) along the bowl back wall surface 202a to clean the bowl wall surface 202. The washing water that has washed the bowl wall surface 202 flows from the drain port 203 opened on the bowl bottom surface 202b to the trap portion TP.

  The water supply pipe 31 is a water supply pipe arranged in the urinal body 20. The water supply pipe 30 is connected to the upstream side of the water supply pipe 31. The water supply pipe 30 is a water supply pipe that connects the urinal body 20 and the water supply unit 10. The water supply unit 10 is connected to the water supply pipe 40 on the building side. The building side water supply pipe 40 is arranged on the back surface side of the wall surface WL, and supplies water from a water supply source and sends it out to the water supply unit 10. The configuration of the water supply unit 10 will be described later.

  The trap portion TP communicates with the drain port 203 of the urinal body 20. The trap portion TP forms sealing water and sends out urine and washing water flowing from the drain port 203 to the instrument drain pipe 50 side as drainage. The equipment drainage pipe 50 is arranged on the back surface side of the wall surface WL, and transports wastewater containing urine and wash water further downstream.

  FIG. 2 is a schematic functional block diagram of the water supply unit 10 shown in FIG.

  As shown in FIG. 2, the water supply unit 10 as a water spouting device includes a water spouting unit 300 and a detection unit 302, and further performs a random light projecting process described later. And a start processing unit 308.

  The water discharger 300 discharges water. The water discharger 300 includes, for example, the solenoid valve 14 and the like.

  The detection unit 302 emits and receives radio waves to detect a detection target. The detection unit 302 includes, for example, the sensor 16 and the detection processing unit 310. The detection processing unit 310 communicates with the sensor 16 for each communication cycle to acquire the light reception result of the sensor 16 and detects the detection target (human body) based on the light reception result. The detection processing unit 310 is configured by the control device 12, for example.

  The water discharge processing unit 304 controls the water discharge from the water discharge unit 300 based on the detection result of the detection unit 302. The water discharge processing unit 304 is configured by the control device 12, for example.

  The random number generator 306 generates a random number. The random number generator 306 is configured by the control device 12, for example.

  The start processing unit 308 determines, for each predetermined period, a variable period shorter than the predetermined period based on a random number, waits for the variable period, and then projects light for a certain period on the detection unit 302. Perform processing to start.

  FIG. 3 is a flowchart of a random light projecting process by each functional unit of the water supply unit 10. This random light projection process is started after the power is turned on and is continued until the power is turned off.

(Step SP10)
The start processing unit 308 determines whether or not the latest communication process performed between the detection processing unit 310 and the sensor 16 is completed for each communication cycle C1 that is a predetermined cycle. Then, the start processing unit 308 proceeds to the process of step SP12 when the determination is affirmative, and returns to the process of step SP10 when the determination is negative. When the detection processing unit 310 obtains the light reception result of the sensor 16 through the communication process, the detection processing unit 310 detects the presence or absence of the human body based on this. As a result, the water discharge processing unit 304 determines the detection once when there is a human body, controls the water discharge unit 300, starts water discharge from the water discharge unit 300, and adjusts the water discharge amount.

(Step SP12)
The start processing unit 308 transfers the processing to the random number generation unit 306. The random number generator 306 generates a random number. Then, the random number generation unit 306 returns the processing to the start processing unit 308, and the start processing unit 308 proceeds to the processing of step SP14.

(Step SP14)
The start processing unit 308 determines a variable period T1 shorter than the communication cycle C1 based on the random number generated by the random number generation unit 306. The variable period T1 may be different from the variable period T1 in the next step SP14 depending on the value of the random number. Then, the start processing unit 308 proceeds to the processing of step SP16.

(Step SP16)
The start processing unit 308 performs a standby process of waiting for the determined variable period T1. Then, the start processing unit 308 proceeds to the processing of step SP18.

(Step SP18)
The start processing unit 308 performs a light projecting process for causing the sensor 16 of the detection unit 302 to start light projecting. Then, the start processing unit 308 returns to the processing of step SP10.

  FIG. 4 is a diagram showing a time chart of processing of each functional unit of the water supply unit 10.

  As shown in FIG. 4, as a result of the execution of the flowchart of FIG. 3, the light emitting process is performed after performing the standby process for a variable period with the communication period C1 as a starting point for each communication period C1 that is a constant period. Like

  As described above, according to the configuration of the water supply unit 10 according to the first embodiment of the present invention, the start processing unit 308 determines the variable period T1 based on the random number generated by the random number generation unit 306 and waits for the variable period T1. After that, since light emission is started to the detection unit 302, even if another water supply unit having the same structure as the water supply unit 10 is provided nearby, compared to a case where a certain period of time is waited until the start of light emission, the water supply unit. The variable period of waiting for light emission can be made to differ from each other by random numbers, and thus the light emission start timing can also be made different. That is, the light projecting period C2 of the sensor 16 can be made random. As a result, radio wave interference between the water supply units can be suppressed.

  Further, according to the configuration of the water supply unit 10, since the process of the start processing unit 308 is performed every communication cycle C1 of a predetermined cycle, and the variable period T1 is set shorter than the communication cycle C1, every communication cycle C1. In addition, the light will be emitted at least once. Therefore, in a certain communication cycle C1, it is possible to prevent a sparse cycle that is not detected at all and a dense interval that is detected once or more. As a result, in the configuration of the water supply unit 10, in suppressing the radio wave interference, it is possible to prevent the detection accuracy of the detection unit 302 from destabilizing with time.

Further, according to the configuration of the water supply unit 10, since light emission and reception are performed at least once every communication cycle C1, it is possible to suppress unnecessary communication processing from occurring.
Further, if the power sources of the plurality of water supply units 10 are batteries, light emission is performed every communication cycle C1, so that the battery life can be made uniform as compared with the case of simply performing random light emission.

<Second embodiment>
Next, a water discharge device according to the second embodiment of the present invention will be described.

  The water discharger according to the second embodiment is different from the first embodiment in that the detection is not fixed even if the human body is detected once. The water discharge device according to the second embodiment has the same hardware configuration as the water supply unit 10 according to the first embodiment.

  FIG. 5 is a flowchart of detection / water discharge processing by each functional unit of the water supply unit 10. This detection / water discharge processing is started after the power is turned on and is continued until the power is turned off.

(Step SP20)
The start processing unit 308 determines whether the detection unit 302 has detected the human body once. Then, the start processing unit 308 proceeds to step SP24 if a positive determination is made, and proceeds to processing of step SP22 if a negative determination is made.

(Step SP22)
The start processing unit 308 performs the random light projecting process of steps SP10 to SP18 shown in FIG. 3 only once. This is referred to as "single-shot random light emission processing". Then, the start processing unit 308 returns to the processing of step SP20.

(Step SP24)
The start processing unit 308 performs the random light projecting processing of step SP10 to step SP18 shown in FIG. 3 multiple times. This is referred to as "a plurality of times of random light projection processing". Then, the start processing unit 308 proceeds to the processing of step SP26. In steps SP22 and SP24, a random light projecting process different from that of the first embodiment may be adopted. For example, a random light projecting process not based on a predetermined cycle such as the communication cycle C1 may be adopted.

(Step SP26)
The start processing unit 308 transfers the process to the water discharge processing unit 304. The water discharge processing unit 304 determines whether or not the detection of the detection target continues for a plurality of times, for example, if there is a human body, a plurality of times, specifically, whether or not it is the total number of times of light projection in step SP24. Then, the water discharge processing unit 304 proceeds to the processing of step SP28 when a positive determination is made, and proceeds to the processing of step SP32 when a negative determination is made.

(Step SP28)
The water discharge processing unit 304 confirms the detection and shifts to the processing in step SP30.

(Step SP30)
The water discharge processing unit 304 performs a water discharge process (control process of the water discharge unit 300).

(Step SP32)
The water discharge processing unit 304 temporarily waits and returns to the processing of step SP20.

  As described above, according to the water discharger of the second embodiment of the present invention, when detection of the human body by the detection unit 302 starts, there is a high possibility of false detection due to radio wave interference. Then, by confirming the detection when the detection continues, it is possible to prevent the control processing from being performed due to the false detection.

<Third embodiment>
Next, a water discharge device according to the third embodiment of the present invention will be described.

  A water discharge device according to the third embodiment of the present invention will be described.

  The water discharger according to the third embodiment of the present invention is different from the first embodiment in that it may or may not be subjected to random light projection processing. The water discharge device according to the third embodiment has the same hardware configuration as the water supply unit 10 according to the first embodiment.

  FIG. 6 is a schematic functional block diagram of a water supply unit 400 as a water discharge device according to the third embodiment of the present invention.

  As shown in FIG. 6, the water supply unit 400 includes the detection unit 302, the water discharge processing unit 304, the water discharge unit 300, the random number generation unit 306, the start processing unit 402, and the selection processing, which are the same as those in the first embodiment. And a section 404.

  The start processing unit 402 is a processing unit that performs a process of causing the sensor 16 to start light emission. The start processing unit 402 includes a first start processing unit 402A that performs a process of immediately starting light emission to the sensor 16 without waiting in each predetermined cycle, and a variable period in each predetermined cycle. And a second start processing unit 402B that performs a process of causing the detection unit 302 to start projecting light after waiting for T1.

  The selection processing unit 404 selects execution of the second start processing unit 402B when the detection unit 302 starts detecting a human body, and selects execution of the first start processing unit 402A at least once in other cases. To process. In the present embodiment, specifically, the selection processing unit 404 selects the execution of the second start processing unit 402B in which the detection of the human body by the detection unit 302 starts and the detection confirmation ends, and when the detection starts and the detection is other than the detection confirmation. First, the execution process of the first start processing unit 402A is selected.

  FIG. 7 is a flowchart of the detection / water discharge processing by each functional unit of the water supply unit 400, and particularly the flowchart in which the processing of the selection processing unit 404 is described. This detection / water discharge processing is started after the power is turned on and is continued until the power is turned off.

(Step SP40)
The selection processing unit 404 determines whether the detection unit 302 has started detecting a human body. Then, the start processing unit 308 proceeds to step SP44 when an affirmative determination is made, and proceeds to the processing of step SP42 when a negative determination is made.

(Step SP42)
The selection processing unit 404 performs a selection process on the execution of the first start processing unit 402A. In response to this, the first start processing unit 402A performs a non-random light projection process for immediately starting light projection on the sensor 16 without waiting at each predetermined cycle. Then, the selection processing unit 404 ends the processing.

(Step SP44)
The selection processing unit 404 determines whether or not the on-delay time (time until the detection is determined) has elapsed. Then, the selection processing unit 404 proceeds to the processing of step SP42 when a positive determination is made, and proceeds to the processing of step SP46 when a negative determination is made.

(Step SP46)
The selection processing unit 404 performs a selection process on the execution of the second start processing unit 402B. In response to this, the second start processing unit 402B performs a plurality of random light emission processes for starting light emission to the detection unit 302 after waiting for the variable period T1 in each predetermined cycle (FIG. 3). Then, the selection processing unit 404 ends the processing.

  FIG. 8 is a diagram showing a time chart of processing of each functional unit of the water supply unit 400.

  As shown in FIG. 8, as a result of the execution of the flowchart of FIG. 7, the random light projecting process is turned on / off according to the detection state.

  As described above, according to the water supply unit 400 according to the third embodiment of the present invention, the detection of the human body is confirmed when the detection of the human body continues. Since the probability of influencing is high, the need for suppressing radio wave interference is higher than that before detection is started. Therefore, in order to suppress radio wave interference, the selection processing unit 404 executes the second start processing unit 402B that waits for a variable period T1 before light projection until the detection of the human body by the detection unit 302 starts and ends. select. However, this standby process consumes power as compared with the case where no standby is performed. Therefore, in the case other than the case where the detection with less need to suppress the radio wave interference starts and the detection is not confirmed, the selection processing unit 404 performs the selection processing of the execution of the first start processing unit 402A at least once, It suppresses an increase in power consumption.

<Fourth Embodiment>
Next, a water discharge device according to the fourth embodiment of the present invention will be described.

  The water discharger according to the fourth embodiment of the present invention differs from the first embodiment in that the communication cycle C1 is changed according to the type of cleaning process. The water discharge device according to the third embodiment has the same hardware configuration as the water supply unit 10 according to the first embodiment.

  The water discharger according to the present embodiment executes the process shown in FIG. 5, but at that time, the communication cycle is changed according to the type of cleaning process. In addition, when the detection unit 302 starts detecting the human body, the water discharge processing unit 304 has a first cleaning process and a longer time until the detection confirmation than the first cleaning process depending on the setting condition. At least one of the two cleaning processes is executed. In the present embodiment, for example, the first cleaning process is a pre-cleaning of the urinal body 20, and the second cleaning process is a main cleaning of the urinal body 20 having a larger cleaning amount than the pre-cleaning. If there is pre-cleaning, the water discharge processing unit 304 performs the first cleaning process after the detection is determined, and if the pre-cleaning is not set and no pre-cleaning is performed, the water discharge processing unit 304 performs only the second cleaning process after the detection is determined. To do.

  FIG. 9: is a figure which shows the flowchart which changes the communication period C1 in the water discharge apparatus which concerns on 4th embodiment.

(Step SP50)
The start processing unit 402 determines whether or not the detection unit 302 has detected the human body once. Then, the start processing unit 308 proceeds to the processing of step SP52 when the determination is affirmative, and returns to the processing of step SP50 when the determination is negative.

(Step SP52)
The start processing unit 402 determines whether the pre-washing presence / absence setting is the pre-washing presence setting or the pre-washing non-setting. Then, the start processing unit 308 proceeds to the processing of step SP54 when it is determined that the pre-cleaning is set, and proceeds to the processing of step SP58 when it is determined that the pre-cleaning is not set.

(Step SP54)
The start processing unit 402 determines whether or not the pre-cleaning fixed time (the time for detection confirmation for the pre-cleaning) has elapsed. Then, the start processing unit 402 proceeds to the processing of step SP58 when the affirmative determination is made, and proceeds to the processing of step SP56 when the negative determination is made.

(Step SP56)
The start processing unit 402 sets the communication cycle C1 of the communication performed between the detection processing unit 310 and the sensor 16 to be shorter than the communication cycle C1 set in step SP58. Then, the start processing unit 402 ends the processing.

(Step SP58)
The start processing unit 402 sets the communication cycle C1 of the communication performed between the detection processing unit 310 and the sensor 16 longer than the communication cycle C1 set in step SP56. Then, the start processing unit 402 ends the processing.

  FIG. 10: is a figure which shows the time chart of a process of each functional part of the water discharge apparatus which concerns on 4th embodiment.

  As shown in FIG. 10, as a result of the execution of the flowchart of FIG. 9, the communication cycle C1 is changed according to the type of cleaning process to be executed.

  As described above, according to the water discharger of the fourth embodiment of the present invention, when the time until the detection confirmation of the main cleaning is longer than that in the previous cleaning, the first cleaning process is the starting point for performing the control process of the water discharger 300. The number of detections performed until the determination of is smaller than the number of detections performed until the determination of the detection that is the starting point for performing the control processing of the water discharger 300 in the second cleaning processing is performed, and the method of performing the first cleaning processing However, the probability of false detection due to radio wave interference may be higher than that in the case where the second cleaning process is executed. Therefore, when the first cleaning process is executed, for example, by shortening the communication cycle C1 as the time is shortened, it is possible to increase the number of times of detection until confirmation and suppress an increase in the probability of false detection. it can.

<Modification>
Although the embodiments of the technology disclosed in the present application have been described above, the technology disclosed in the present application is not limited to the above.

  For example, although the case where the detection target detected by the detection unit 302 is the human body has been described, the detection target may be urine or a toilet door.

  Further, in the first embodiment, the case where the processing of the start processing unit 308 is performed every communication cycle C1 of a predetermined cycle has been described, but it may be performed every other predetermined cycle different from the communication cycle C1. . However, from the viewpoint of eliminating wasteful communication processing, it is preferable that the processing of the start processing unit 308 be performed every communication cycle C1.

  Further, although the urinal device US has been described as an example of the device provided with the water discharge device, it may be a faucet device provided in a urinal device or a kitchen.

  Further, each element included in each of the above-described embodiments can be combined as long as technically possible, and a combination of these is also included in the scope of the present invention as long as it includes the features of the present invention.

US: Urinal device (toilet device)
10 ... Water supply unit (water discharge device)
16 ... Sensor 300 ... Water discharge part 302 ... Detection part 304 ... Water discharge processing part 306 ... Random number generation part 308 ... Start processing part 310 ... Detection processing part 400 ... Water supply unit (water discharge device)
402 ... Start processing unit 402A ... First start processing unit 402B ... Second start processing unit 404 ... Selection processing unit C1 ... Communication cycle T1 ... Variable period

Claims (5)

A water spout that spouts water,
A detection unit that emits and receives radio waves to detect the detection target,
A water discharge processing unit that controls the water discharge from the water discharge unit based on the detection result of the detection unit;
A random number generator that generates random numbers,
A process of determining a variable period shorter than the predetermined period based on the random number for each predetermined period and waiting for the variable period, and then causing the detection unit to start light emission for a certain period. And a start processing section for performing
The start processing unit, when the detection of the detection target by the detection unit starts, performs a plurality of light emitting and receiving by the detection unit,
The water discharge processing unit performs the control processing after confirming the detection of the detection target when the detection of the detection target continues a plurality of times.
The start processing unit further includes a first start processing unit that immediately starts light emission to the detection unit in each of the predetermined cycles, and the variable variable in each of the predetermined cycles. A second start processing unit that performs a process of starting light emission to the detection unit after waiting for a period,
When the detection of the detection target by the detection unit has started, execution of the second start processing unit is selected until the detection determination of the detection target based on the detection is determined, and at least 1 in other cases. The time further includes a selection processing unit that performs selection processing of execution of the first start processing unit,
Water discharge device. The detection unit includes a sensor that emits and receives radio waves, and a detection processing unit that communicates with the sensor in each communication cycle to obtain a light reception result of the sensor and detects the detection target based on the light reception result. Have,
The predetermined cycle is the communication cycle,
The water discharger according to claim 1. When the detection unit starts detecting the detection target, the water discharge processing unit takes a longer time to perform detection than the first cleaning process and the first cleaning process, depending on the setting conditions. Performing at least one of the second cleaning process,
In the case where the water discharge processing unit executes the first cleaning process , when the second cleaning process is executed in the predetermined cycle until the detection of the detection target by the detection unit starts and is determined. Shorter than
The water discharger according to claim 1. The random number generator generates the random number based on a unique value of the water discharge device,
The water discharger according to any one of claims 1 to 3. A toilet device comprising a toilet bowl and the water discharge device according to claim 3,
The first cleaning process is a pre-cleaning of the toilet bowl, the second cleaning process is a main cleaning of the toilet bowl having a larger cleaning amount than the pre-cleaning,
When the water discharge processing unit executes the first cleaning process and subsequently executes the second cleaning process, the predetermined cycle is made longer than when the first cleaning process is executed,
Toilet equipment.