JPH0768715B2 - Urinal automatic cleaning method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for automatically cleaning a urinal upon use. More specifically, the present invention relates to an improvement of a urinal automatic cleaning method that performs pre-cleaning and main cleaning.

[Prior Art] A method of cleaning a urinal by automatically supplying cleaning water when the urinal is used is widely used. As this type of automatic cleaning method, a method of performing preliminary cleaning and main cleaning is known. In this method, when the human body stands in front of the urinal, first perform a preliminary cleaning to supply the cleaning water to the urinal for a short time to wet the bowl surface, and after the human body leaves the urinal, wash water for a long time. This is a method of supplying it to a urinal for thorough cleaning (main cleaning). By performing the preliminary cleaning to wet the pot surface, it is possible to avoid the urine component from directly contacting the pot surface, and it is possible to obtain an effect that dirt is unlikely to adhere to the pot surface.

[Problems to be Solved by the Invention] When the next user appears immediately after the previous user has left, it is sufficient to wash a small amount of water and wash the pot surface lightly. Even if the water is thoroughly washed with running water, urine will be applied to the bowl surface immediately after that, and thus the washing will be useless, and a large amount of washing water will be uselessly used.

[Means for Solving the Problems] The present invention is a urinal automatic cleaning method for detecting a human body in front of a urinal by a human body detection device and flowing cleaning water to the urinal, wherein the human body is detected in front of the urinal. Occasionally, pre-washing is performed by flushing water into the urinal for a short time. When this human body leaving is detected, urinal automatic flushing is performed in which flush water is flushed to the urinal according to the time until the next human body is detected. In the method, after detecting the human body leaving by the human body detection device, only the preliminary washing is performed when the human body is detected within the predetermined time T, and when the human body is not detected within the predetermined time T, a long time elapses after the time T elapses. This is characterized by performing main cleaning.

In the present invention, it is preferable to select the predetermined time T from a time of 5 to 30 seconds. Also, the preliminary cleaning time is 1 to
About 5 seconds is suitable, and the main cleaning time is preferably about 5 to 20 seconds.

[Operation] According to the present invention, when the next user appears immediately after the previous user's leaving, only the short-time cleaning is performed. Therefore, it is possible to prevent the wash water from flowing unnecessarily.

Embodiments Embodiments will be described below with reference to the drawings.

FIG. 1 is a schematic configuration diagram of a urinal to which an automatic cleaning method according to an embodiment of the present invention is applied, FIG. 2 is a flowchart explaining a control method, and FIG. 3 is a timing chart.

In FIG. 1, a urinal 42 is attached to a wall surface 40, and a water supply pipe 44, a water supply control device 46, and a water supply connection pipe are attached to the urinal 42.
Wash water can be supplied via 48. The water supply control device 46 is a human body detection sensor 50 for detecting a urinal user standing in front of the urinal 42, a control circuit 52 to which a signal of the human body detection sensor 50 is input, the water supply pipe 44 and a water supply connection. The pipes 48 are provided with valves (solenoid valves) 54 and the like connected to the pipes 48. The control circuit 52 includes a microcomputer, and the control program shown in FIG. 2 is stored in the microcomputer.

This control method will be described with reference to FIGS. 2 and 3. In addition, the following ~ corresponds to ~ in Fig. 3. Are not shown in FIG.

When the power switch is turned on, main cleaning (15 seconds cleaning) starts 2 seconds later.

The program starts when the power switch is turned on. First, in step 1, all flags are set to 0. Then, in step 2, all timers are reset, and in step 3, the detection flag is set to 1. Next, in step 4, it is determined whether or not a human body is detected. in this case,
Immediately after the start of the program, the human body is not yet standing in front of the toilet bowl, and since the human body has not been detected, the process moves from step 4 to step 5.

In step 5, it is determined whether the detection flag is 0 or 1. In this case, since the detection flag is set to 1 in step 3, the process proceeds to step 6 and the detection flag is set to 0, and then the leaving timer is started in step 7. In this embodiment, the leaving timer is a 2-second timer that times up in 2 seconds.

Next, at step 8, it is judged whether the flag A is 1 or 0. In this case, the flag A is set to 0 in step 1, and the process moves from step 8 to step 9 to determine whether or not the leaving timer has timed out.

At this stage, since the leaving timer has started in step 7 and only a very short time has elapsed yet, it is judged from step 9 to step 15 whether or not the main cleaning timer has timed out. . In this embodiment, the main cleaning timer is a 15 second timer.

In this case, since the main cleaning timer has not been started and the result of the determination is NO, the routine moves from step 15 to step 26. In this step 26, it is judged whether or not the preliminary cleaning timer is up. In this case, the pre-cleaning timer has not started and, naturally, the pre-cleaning timer has not started, so the routine moves from step 26 to step 29.

At step 29, it is judged if the timer A (6 second timer) has timed out. In this case, the timer A has not started and the result of the determination is NO.
The process moves from 29 to step 32, and it is determined whether or not the B timer (17-second timer) has timed up. In this case as well, the B timer has not been started yet, and the determination result is NO, so the routine moves from step 32 to step 4.

From step 4, the process returns to step 5 again, and steps 5 to 8 are skipped. That is, since the detection flag is returned to 0 in step 6, the process moves from step 5 to step 8. And further step 9
Then, it is judged whether or not the exit timer is up.

The process goes from step 9 to step 15 until the evacuation timer has timed out, then from step 26, 29, 32 to step 4, and again steps 5, 8, 9 are cycled.
After repeating this circulation a plurality of times, the leaving timer times out. Then, the process moves from step 9 to step 10, the valve is opened, and the main cleaning is started. Next, in steps 11, 12, 13, and 14, the leaving timer is sequentially reset, and further, the main cleaning timer is started, the B timer is started, and the flag B is set to 1. Then, the process proceeds to step 15.

In step 15, since the main cleaning timer has not yet expired, the process moves from step 15 to step 26, and then the processes of steps 29, 32, 4, 5, 8, and 9 are performed in this order. In step 9, since the leaving timer itself is not operated and the result of the determination in step 9 is NO, the process proceeds from step 9 to step 15. From step 15 to steps 26, 29, 32, 4, until the main cleaning timer is up.
The circulation of 5, 8, and 9 is performed.

When 15 seconds have elapsed from the start of cleaning, the main cleaning timer is incremented in step 15, so the process moves from step 15 to step 16 to close the valve and complete the main cleaning. Next, after moving to step 17 and resetting the main cleaning timer, the process proceeds to step 26 and then to step 29. From step 29, the process moves to step 32, and it is judged whether or not the B timer is up. Immediately after the main cleaning timer has expired, the B timer has not yet expired, and the program directly returns from step 32 to step 4, and the program proceeds in the order of steps 5, 8, 9, and 15. In step 15, since the main cleaning timer is reset in step 17, the process directly moves from step 15 to step 26 and further to step 29, and the circulation is performed in this order. Eventually, when 17 seconds have elapsed from the start of the cleaning and the B timer is up, the process moves from step 32 to step 33 to reset the B timer and set the flag B to 0. Then, the process returns to step 4.

Thus, the main cleaning is performed 2 seconds after the power is turned on. After the main cleaning is completed, steps 4, 5, 8
It shifts to the standby state of circulating 9, 15, 26, 29 and 32.

When the human body stands in front of the toilet bowl in this standby state, preliminary washing is performed.

That is, since the determination result is YES in step 4,
Move from step 4 to step 18. Then, it is determined whether the detection flag is 0 or 1. In this case, since the detection flag is set to 0 in step 6, the process proceeds from step 18 to step 19, and the leaving timer is reset. Then, after setting the detection flag to 1,
It is determined whether the flag B is 0 or 1 (step
20, 21). In this case, in step 34, the flag B
Is set to 0, so go to step 22, open the valve and start flushing the urinal. Then step
At 23, 24 and 25, the pre-cleaning timer is started and the A timer is started, and the flag A is set to 1. After that, jump from step 15 to step 26,
In step 26, it is determined whether the pre-cleaning timer has expired.

In this case, the pre-cleaning timer has just started and the pre-cleaning timer has not expired. Therefore, it is judged from step 26 to step 29 whether or not the timer A is up.

At this stage, the timer A has just started, and the result of the determination in step 29 is NO, and the process jumps from step 29 to step 32. In this case, since the B timer has not started, the determination result in step 32 is NO, and the process moves to step 4.

In step 4, the human body continues to exist in front of the urinal, and the process moves to step 18. In this case, since the detection flag is set to 1 in step 20, the process skips from step 18 to step 15 and then to step 26. Then, steps 26, 29, 32, 4, 18, and 15 are cycled until the preliminary cleaning timer is up.

During this circulation, when 5 seconds have elapsed from the start of the preliminary cleaning, the preliminary cleaning timer expires. Then,
The process moves from step 26 to step 27, and the valve is closed to complete the preliminary cleaning. Further, the preliminary cleaning timer is reset (step 28). After that, the program is circulated in the order of steps 29, 32, 4, 18, 15, 26 and 29 until the timer A expires.

Eventually, 6 seconds after the A timer starts (1 second after the preliminary cleaning is completed), the A timer will time up, so move from step 29 to steps 30 and 31,
The timer is reset and the flag A is reset to 0. Until the human body leaves from the front of the urinal, step 32,
The program circulates in the order of 4, 18, 26, 29, 32.

If the next user does not appear until the time T (two seconds in this embodiment) elapses after the human body has left, the main cleaning is performed.

When the human body leaves the front of the urinal, the process moves from step 4 to step 5. In this case, since the detection flag is set to 1 in step 20, the process moves from step 5 to step 6, the detection flag is returned to 0, and then the leaving timer is started (step 7). Next, in step 8, it is determined whether the flag A is 0 or 1. In this case, since the flag A is set to 0 in step 31, the process proceeds from step 8 to step 9 and it is determined whether or not the leaving timer has timed out. At this stage, the evacuation timer has just started, and the result of the determination is NO.
Skip to 15 to determine if the main cleaning timer has expired.

At this stage, the main cleaning timer has not started and the judgment result is NO.
Skip to 26 and then to step 29. The A-timer is not started in this case and jumps from step 29 to step 32. At this stage, the B timer has not been started, and the program moves from step 32 to step 4 and then jumps to step 5.

At this stage, the detection flag is set to 0 in step 6 above.
Since it is set to, the process moves from step 5 to step 8. Since the flag A is 0, the process proceeds to step 9. Steps 9, 15, 26, until the leaving timer times out,
It cycles in the order of 29, 32, 4, 5, 8, and 9.

Eventually, the evacuation timer will start 2 seconds after the evacuation timer starts, and the evacuation timer will time out, so the process moves from step 9 to step 10 where the valve is first opened and water is started to flow into the urinal. This is the start of main cleaning. Then step
At 11 and 12, after the leaving timer is reset, the main cleaning timer is started. Further, the flags B are set to 1 after the B timer is started in steps 13 and 14. Then, the process proceeds to step 15. From step 15 to steps 26, 29, 3 until the main cleaning timer expires.
The circulation of 2, 4, 5, 8, 9, and 15 is performed (in step 9, the exit timer is reset in step 11, so that step 9 is skipped directly in step 15).

Eventually, 15 seconds have elapsed from the start of the main cleaning, and the main cleaning timer times out, so the process moves from step 15 to step 16 to close the valve and complete the main cleaning. After resetting the main cleaning timer in step 17,
Go to 26. Step until the B timer times out
It is circulated in the order of 26, 29, 32, 4, 5, 8, 9, 15, 26.

When 17 seconds (2 seconds after the main cleaning is finished) has elapsed since the B timer started, the B timer times out, so the process moves from step 32 to steps 33 and 34, and the B timer is reset and the flag B is set. Set to 0. And
Go to step 4, steps 4, 5, 8, 9, 15, 26,
It shifts to the standby state of circulating 29 and 32.

The next time a user appears during the main cleaning, the main cleaning will be continued, but the preliminary cleaning will not be performed.

As mentioned above, steps 4, 5, 8, 9, 15, 26, 29, 32,
It is assumed that a human body appears in front of the urinal while the main washing is being performed in the order of 4. In this case, the process moves from step 4 to step 18. In this case, since the detection flag is set to 0 in step 6, the process proceeds from step 18 to steps 19 and 20. Then, the leaving timer is reset and the detection flag is set to 1. Next, at step 21, it is judged whether the flag B is 0 or 1. In this case, flag B in step 14
Is set to 1, so step 21 to step 15
Then, the process proceeds to step 29 through step 26. Then, the circulation is performed in the order of steps 29, 32, 4, 18, 15, 26, 29. (Because the detection flag is set to 1 in step 20, the process moves from step 18 to step 15.) Eventually, when the main cleaning timer is up, the process moves from step 15 to steps 16 and 17 to close the main cleaning. Ends.

Thus, even if the next time the user appears in front of the urinal during the main cleaning, the programs of steps 22 to 25, 27 and 28 are not executed and the preliminary cleaning is not performed.

If the human body leaves during the preliminary cleaning, the main cleaning will not be performed,
Only the preliminary cleaning is performed.

As described above, if the human body appears in front of the urinal to perform the preliminary cleaning, steps 4, 18, 26, 2
The circulation is performed in the order of 9, 32, and 4. The case where the human body leaves from the front of the urinal during the preliminary cleaning will be described below.

In this case, the process moves from step 4 to step 5 and then to step 6. That is, since the detection flag is set to 1 in step 20, the process moves from step 5 to step 6. Then, after the leaving timer is started in step 7, the process proceeds to step 8. In this case, since the flag A is set to 1 in step 25,
The process moves from step 8 to step 35, resets the leaving timer, and then moves to step 15. Then, steps 15, 26, 29, 32, until the pre-wash timer expires.
The program runs in the order of 4, 5, 8, 35, and 26, and after the pre-cleaning timer times out, step 26 to step 27
Then, the valve is closed, pre-cleaning is completed, and the pre-cleaning timer is reset. Then step 29,
It is circulated in the order of 32, 4, 5, 8, 35, 26, 29 and moves to the standby state.

When the user next appears before the lapse of time T (2 seconds) after the human body has left, preliminary cleaning is performed and main cleaning is omitted.

When the human body leaves, step 4, as in the case above,
It circulates in the order of 5, 6, 7, 8, 9, 15, 26, 29, 32, 4. When the human body is detected within 2 seconds after the leaving timer is started (step 7), the process proceeds from step 4 to step 18. After that, preliminary cleaning is performed in the same manner as described above.

In this way, when the next user appears within 2 seconds after the previous user left, only the preliminary cleaning is performed and the main cleaning is not performed.

[Effect] As is clear from the above embodiments, according to the automatic cleaning method of the present invention, when the urinal is frequently used, the main cleaning function is stopped and only preliminary cleaning is performed, so that water saving can be achieved. it can. Of course, after the last use of the user, when the predetermined time elapses without the user appearing the next time, the main cleaning function operates as usual, so that it is possible to prevent the adhesion of urine components and obtain a sufficient cleaning effect. Obtainable.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a urinal cleaning device to which the method of the present invention is applied, FIG. 2 is a flowchart explaining a control program, and FIG. 3 is a timing chart. 42: Urinal, 44: Water supply pipe, 46: Cleaning control device, 50
...... Human body detection sensor, 52 ...... Control circuit, 54 ...... Solenoid valve.

Claims (1)

[Claims] 1. An automatic urinal cleaning method for detecting a human body in front of a urinal by a human body detection device and supplying flush water to the urinal, wherein when the human body is detected in front of the urinal, water is supplied to the urinal for a short time. When the human body is detected to leave the body, the urinal automatic cleaning method in which flush water is supplied to the urinal according to the time until the next human body is detected is detected by the human body detection device. A predetermined time T after detection of leaving
When a human body is detected inside, only preliminary cleaning is performed,
An automatic urinal cleaning method, characterized in that when a human body is not detected within the predetermined time T, a long-time main cleaning is performed after the time T has elapsed.